diff options
| author | r3zch <r3zch@yandex-team.com> | 2024-11-29 12:27:52 +0300 |
|---|---|---|
| committer | r3zch <r3zch@yandex-team.com> | 2024-11-29 12:41:56 +0300 |
| commit | 9a7a8a5fbc8b03deab5bf8811b4b9243a693bb1e (patch) | |
| tree | 09ad0223de1eae02c0ae99eddb0166c4f6ad2f67 | |
| parent | 0dd435081e96fb2c7d63a01971a01b4b446a7f21 (diff) | |
| download | ydb-9a7a8a5fbc8b03deab5bf8811b4b9243a693bb1e.tar.gz | |
curl build with http3 support
commit_hash:9033848a94b58ad32fb6c296eca4f77af9cda070
200 files changed, 77163 insertions, 28 deletions
diff --git a/contrib/libs/curl/.yandex_meta/__init__.py b/contrib/libs/curl/.yandex_meta/__init__.py index f0181761de..219d30179f 100644 --- a/contrib/libs/curl/.yandex_meta/__init__.py +++ b/contrib/libs/curl/.yandex_meta/__init__.py @@ -83,6 +83,9 @@ def post_install(self): # add ifaddrs implementation if needed m.PEERDIR.add("contrib/libs/libc_compat") + m.PEERDIR.add("contrib/libs/openssl") + m.PEERDIR.add("contrib/libs/ngtcp2") + m.PEERDIR.add("contrib/libs/nghttp3") # make c-ares dependency conditional, # but leave ADDINCL in place to make CONFIGURE work @@ -178,9 +181,9 @@ curl = GNUMakeNixProject( "nspr.h", "netinet/in6.h", "nettle/", - "nghttp3/", - "ngtcp2.h", - "ngtcp2/", + "ngtcp2/ngtcp2_crypto_boringssl.h", + "ngtcp2/ngtcp2_crypto_gnutls.h", + "ngtcp2/ngtcp2_crypto_wolfssl.h", "nwconio.h", # NB: openssl/core_names.h appeared in OpenSSL 3.0, while we have only 1.1.1l at the time "openssl/core_names.h", diff --git a/contrib/libs/curl/.yandex_meta/override.nix b/contrib/libs/curl/.yandex_meta/override.nix index c836e6b03f..3fdf2c31e5 100644 --- a/contrib/libs/curl/.yandex_meta/override.nix +++ b/contrib/libs/curl/.yandex_meta/override.nix @@ -1,4 +1,14 @@ -pkgs: attrs: with pkgs; rec { +pkgs: attrs: with pkgs; + +let + ngtcp2 = pkgs.ngtcp2.overrideAttrs (finalAttrs: previousAttrs: rec { + version = "1.8.1"; + src = fetchurl { + url = "https://github.com/ngtcp2/ngtcp2/releases/download/v${version}/ngtcp2-${version}.tar.xz"; + hash = "sha256-rIRKees/FT5Mzc/szt9CxXqzUruKuS7IrF00F6ec+xE="; + }; + }); +in rec { version = "8.5.0"; versionWithUnderscores = "${lib.replaceStrings ["."] ["_"] version}"; @@ -13,6 +23,9 @@ pkgs: attrs: with pkgs; rec { c-ares zlib zstd + quictls + nghttp3 + ngtcp2 ]; configureFlags = [ @@ -20,15 +33,15 @@ pkgs: attrs: with pkgs; rec { "--disable-ldap" "--disable-ldaps" "--enable-ares" - "--with-openssl=${openssl.dev}" + "--with-openssl" "--with-ca-fallback" "--with-zstd=${zstd.dev}" "--with-brotli=${brotli.dev}" + "--with-nghttp3" + "--with-ngtcp2" "--without-gnutls" "--without-libidn2" "--without-librtmp" - "--without-nghttp3" - "--without-ngtcp2" "--without-wolfssl" ]; diff --git a/contrib/libs/curl/lib/curl_config-linux.h b/contrib/libs/curl/lib/curl_config-linux.h index 22debd1fcd..e10307c771 100644 --- a/contrib/libs/curl/lib/curl_config-linux.h +++ b/contrib/libs/curl/lib/curl_config-linux.h @@ -470,13 +470,13 @@ #define HAVE_NGHTTP2_NGHTTP2_H 1 /* Define to 1 if you have the <nghttp3/nghttp3.h> header file. */ -/* #undef HAVE_NGHTTP3_NGHTTP3_H */ +#define HAVE_NGHTTP3_NGHTTP3_H 1 /* Define to 1 if you have the <ngtcp2/ngtcp2_crypto.h> header file. */ -/* #undef HAVE_NGTCP2_NGTCP2_CRYPTO_H */ +#define HAVE_NGTCP2_NGTCP2_CRYPTO_H 1 /* Define to 1 if you have the <ngtcp2/ngtcp2.h> header file. */ -/* #undef HAVE_NGTCP2_NGTCP2_H */ +#define HAVE_NGTCP2_NGTCP2_H 1 /* if you have an old MIT Kerberos version, lacking GSS_C_NT_HOSTBASED_SERVICE */ @@ -886,16 +886,16 @@ #define USE_NGHTTP2 1 /* if nghttp3 is in use */ -/* #undef USE_NGHTTP3 */ +#define USE_NGHTTP3 1 /* if ngtcp2 is in use */ -/* #undef USE_NGTCP2 */ +#define USE_NGTCP2 1 /* if ngtcp2_crypto_gnutls is in use */ /* #undef USE_NGTCP2_CRYPTO_GNUTLS */ /* if ngtcp2_crypto_quictls is in use */ -/* #undef USE_NGTCP2_CRYPTO_QUICTLS */ +#define USE_NGTCP2_CRYPTO_QUICTLS 1 /* if ngtcp2_crypto_wolfssl is in use */ /* #undef USE_NGTCP2_CRYPTO_WOLFSSL */ diff --git a/contrib/libs/curl/lib/curl_config-osx.h b/contrib/libs/curl/lib/curl_config-osx.h index f6b6041caf..599c2a4003 100644 --- a/contrib/libs/curl/lib/curl_config-osx.h +++ b/contrib/libs/curl/lib/curl_config-osx.h @@ -488,13 +488,13 @@ #define HAVE_NGHTTP2_NGHTTP2_H 1 /* Define to 1 if you have the <nghttp3/nghttp3.h> header file. */ -/* #undef HAVE_NGHTTP3_NGHTTP3_H */ +#define HAVE_NGHTTP3_NGHTTP3_H 1 /* Define to 1 if you have the <ngtcp2/ngtcp2_crypto.h> header file. */ -/* #undef HAVE_NGTCP2_NGTCP2_CRYPTO_H */ +#define HAVE_NGTCP2_NGTCP2_CRYPTO_H 1 /* Define to 1 if you have the <ngtcp2/ngtcp2.h> header file. */ -/* #undef HAVE_NGTCP2_NGTCP2_H */ +#define HAVE_NGTCP2_NGTCP2_H 1 /* if you have an old MIT Kerberos version, lacking GSS_C_NT_HOSTBASED_SERVICE */ @@ -990,14 +990,17 @@ #define USE_NGHTTP2 1 /* if nghttp3 is in use */ -/* #undef USE_NGHTTP3 */ +#define USE_NGHTTP3 1 /* if ngtcp2 is in use */ -/* #undef USE_NGTCP2 */ +#define USE_NGTCP2 1 /* if ngtcp2_crypto_openssl is in use */ /* #undef USE_NGTCP2_CRYPTO_OPENSSL */ +/* if ngtcp2_crypto_quictls is in use */ +#define USE_NGTCP2_CRYPTO_QUICTLS 1 + /* if NSS is enabled */ /* #undef USE_NSS */ diff --git a/contrib/libs/curl/lib/curl_config-win.h b/contrib/libs/curl/lib/curl_config-win.h index 89b070743b..c680859da9 100644 --- a/contrib/libs/curl/lib/curl_config-win.h +++ b/contrib/libs/curl/lib/curl_config-win.h @@ -474,13 +474,13 @@ #define HAVE_NGHTTP2_NGHTTP2_H 1 /* Define to 1 if you have the <nghttp3/nghttp3.h> header file. */ -/* #undef HAVE_NGHTTP3_NGHTTP3_H */ +#define HAVE_NGHTTP3_NGHTTP3_H 1 /* Define to 1 if you have the <ngtcp2/ngtcp2_crypto.h> header file. */ -/* #undef HAVE_NGTCP2_NGTCP2_CRYPTO_H */ +#define HAVE_NGTCP2_NGTCP2_CRYPTO_H 1 /* Define to 1 if you have the <ngtcp2/ngtcp2.h> header file. */ -/* #undef HAVE_NGTCP2_NGTCP2_H */ +#define HAVE_NGTCP2_NGTCP2_H 1 /* if you have an old MIT gssapi library, lacking GSS_C_NT_HOSTBASED_SERVICE */ /* #undef HAVE_OLD_GSSMIT */ @@ -1003,14 +1003,17 @@ /* #undef USE_NGHTTP2 */ /* if nghttp3 is in use */ -/* #undef USE_NGHTTP3 */ +#define USE_NGHTTP3 1 /* if ngtcp2 is in use */ -/* #undef USE_NGTCP2 */ +#define USE_NGTCP2 1 /* if ngtcp2_crypto_openssl is in use */ /* #undef USE_NGTCP2_CRYPTO_OPENSSL */ +/* if ngtcp2_crypto_quictls is in use */ +#define USE_NGTCP2_CRYPTO_QUICTLS 1 + /* if NSS is enabled */ /* #undef USE_NSS */ diff --git a/contrib/libs/curl/lib/vquic/curl_ngtcp2.c b/contrib/libs/curl/lib/vquic/curl_ngtcp2.c index 416c8fb3ec..2aefc7fa60 100644 --- a/contrib/libs/curl/lib/vquic/curl_ngtcp2.c +++ b/contrib/libs/curl/lib/vquic/curl_ngtcp2.c @@ -25,15 +25,15 @@ #include "curl_setup.h" #if defined(USE_NGTCP2) && defined(USE_NGHTTP3) -#error #include <ngtcp2/ngtcp2.h> -#error #include <nghttp3/nghttp3.h> +#include <ngtcp2/ngtcp2.h> +#include <nghttp3/nghttp3.h> #ifdef USE_OPENSSL #include <openssl/err.h> #if defined(OPENSSL_IS_BORINGSSL) || defined(OPENSSL_IS_AWSLC) #error #include <ngtcp2/ngtcp2_crypto_boringssl.h> #else -#error #include <ngtcp2/ngtcp2_crypto_quictls.h> +#include <ngtcp2/ngtcp2_crypto_quictls.h> #endif #include "vtls/openssl.h" #elif defined(USE_GNUTLS) diff --git a/contrib/libs/curl/lib/vquic/curl_ngtcp2.h b/contrib/libs/curl/lib/vquic/curl_ngtcp2.h index baa4d41527..e65c51919d 100644 --- a/contrib/libs/curl/lib/vquic/curl_ngtcp2.h +++ b/contrib/libs/curl/lib/vquic/curl_ngtcp2.h @@ -32,8 +32,8 @@ #include <netinet/udp.h> #endif -#error #include <ngtcp2/ngtcp2_crypto.h> -#error #include <nghttp3/nghttp3.h> +#include <ngtcp2/ngtcp2_crypto.h> +#include <nghttp3/nghttp3.h> #ifdef USE_OPENSSL #include <openssl/ssl.h> #elif defined(USE_WOLFSSL) diff --git a/contrib/libs/curl/ya.make b/contrib/libs/curl/ya.make index ea28122a8a..1b7ede7dc1 100644 --- a/contrib/libs/curl/ya.make +++ b/contrib/libs/curl/ya.make @@ -20,6 +20,8 @@ PEERDIR( contrib/libs/brotli/enc contrib/libs/libc_compat contrib/libs/nghttp2 + contrib/libs/nghttp3 + contrib/libs/ngtcp2 contrib/libs/openssl contrib/libs/zlib contrib/libs/zstd diff --git a/contrib/libs/nghttp3/.yandex_meta/__init__.py b/contrib/libs/nghttp3/.yandex_meta/__init__.py new file mode 100644 index 0000000000..f75bcde11e --- /dev/null +++ b/contrib/libs/nghttp3/.yandex_meta/__init__.py @@ -0,0 +1,34 @@ +import os +from devtools.yamaker.project import CMakeNinjaNixProject + + +def post_install(self): + includeFilePath = os.path.join(self.dstdir, "lib/includes/nghttp3/nghttp3.h") + + with open(includeFilePath, "r") as file: + filedata = file.read() + + filedata = filedata.replace("<nghttp3/version.h>", "\"version.h\"") + + with open(includeFilePath, "w") as file: + file.write(filedata) + + # Add PEERDIR to contrib/libs/nghttp2 and remove sfparse.c from SRCS + # because nghttp2 already has sfparse.c. + # Using sfparse.c from nghttp3 may cause a linker error in projects + # that use nghttp2 and nghttp3 when building with the flag -all_load + with self.yamakes["."] as m: + m.PEERDIR.add("contrib/libs/nghttp2") + m.SRCS.remove("lib/sfparse/sfparse.c") + + +nghttp3 = CMakeNinjaNixProject( + license="MIT", + flags=["-DENABLE_LIB_ONLY=1"], + owners=["g:devtools-contrib", "g:yandex-io"], + nixattr="nghttp3", + arcdir="contrib/libs/nghttp3", + post_install=post_install, + platform_dispatchers=["config.h"], + addincl_global={".": {"./lib/includes"}}, +) diff --git a/contrib/libs/nghttp3/.yandex_meta/devtools.copyrights.report b/contrib/libs/nghttp3/.yandex_meta/devtools.copyrights.report new file mode 100644 index 0000000000..fb16c9775b --- /dev/null +++ b/contrib/libs/nghttp3/.yandex_meta/devtools.copyrights.report @@ -0,0 +1,348 @@ +# File format ($ symbol means the beginning of a line): +# +# $ # this message +# $ # ======================= +# $ # comments (all commentaries should starts with some number of spaces and # symbol) +# $ IGNORE_FILES {file1.ext1} {file2.ext2} - (optional) ignore listed files when generating license macro and credits +# $ RENAME {original license id} TO {new license id} # user comments - (optional) use {new license id} instead {original license id} in ya.make files +# $ # user comments +# $ +# ${action} {license id} {license text hash} +# $BELONGS ./ya/make/file/relative/path/1/ya.make ./ya/make/2/ya.make +# ${all_file_action} filename +# $ # user commentaries (many lines) +# $ generated description - files with this license, license text... (some number of lines that starts with some number of spaces, do not modify) +# ${action} {license spdx} {license text hash} +# $BELONGS ./ya/make/file/relative/path/3/ya.make +# ${all_file_action} filename +# $ # user commentaries +# $ generated description +# $ ... +# +# You can modify action, all_file_action and add commentaries +# Available actions: +# keep - keep license in contrib and use in credits +# skip - skip license +# remove - remove all files with this license +# rename - save license text/links into licenses texts file, but not store SPDX into LINCENSE macro. You should store correct license id into devtools.license.spdx.txt file +# +# {all file action} records will be generated when license text contains filename that exists on filesystem (in contrib directory) +# We suppose that that files can contain some license info +# Available all file actions: +# FILE_IGNORE - ignore file (do nothing) +# FILE_INCLUDE - include all file data into licenses text file +# ======================= + +KEEP COPYRIGHT_SERVICE_LABEL 0badd8dd1e0fa79a05753bbdaf7b9220 +BELONGS ya.make + License text: + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2018 ngtcp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/nghttp3_ksl.c [4:5] + lib/nghttp3_ksl.h [4:5] + lib/nghttp3_vec.c [4:5] + lib/nghttp3_vec.h [4:5] + +KEEP COPYRIGHT_SERVICE_LABEL 1050d39974838d9e4a3ebfa807befa85 +BELONGS ya.make + License text: + * Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de> + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/sfparse/sfparse.c [792:792] + +KEEP COPYRIGHT_SERVICE_LABEL 1c2050c8044ca0184cd622399091074c +BELONGS ya.make + License text: + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2015 nghttp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/nghttp3_http.c [4:5] + lib/nghttp3_http.h [4:5] + lib/sfparse/sfparse.c [4:6] + lib/sfparse/sfparse.h [4:6] + +KEEP COPYRIGHT_SERVICE_LABEL 21d419b06e057fd073eece04d054aff1 +BELONGS ya.make + License text: + /* Copyright (c) 2008-2010 Bjoern Hoehrmann <bjoern@hoehrmann.de> + * See http://bjoern.hoehrmann.de/utf-8/decoder/dfa/ for details. + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/sfparse/sfparse.c [789:790] + +KEEP COPYRIGHT_SERVICE_LABEL 3782c9399af9718cb85783105b7784ae +BELONGS ya.make + License text: + Copyright (C) 1994-1996, 1999-2002, 2004-2017, 2020-2021 Free + Software Foundation, Inc. + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + INSTALL [4:5] + +KEEP COPYRIGHT_SERVICE_LABEL 45c763ee42f330d97a4b988bd6ff227d +BELONGS ya.make + License text: + * Copyright (c) 2022 nghttp3 contributors + * Copyright (c) 2022 ngtcp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/nghttp3_balloc.c [4:5] + lib/nghttp3_balloc.h [4:5] + lib/nghttp3_objalloc.c [4:5] + lib/nghttp3_objalloc.h [4:5] + lib/nghttp3_opl.c [4:5] + lib/nghttp3_opl.h [4:5] + lib/nghttp3_unreachable.c [4:5] + lib/nghttp3_unreachable.h [4:5] + +KEEP COPYRIGHT_SERVICE_LABEL 58664e40c9f8424ff9aaf888f8b2814d +BELONGS ya.make + License text: + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2016 ngtcp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/includes/nghttp3/version.h [4:5] + +KEEP COPYRIGHT_SERVICE_LABEL ac6c2cf84aa4a7b445ce3d5b1ef80906 +BELONGS ya.make + License text: + * Copyright (c) 2018 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2017 nghttp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/includes/nghttp3/nghttp3.h [4:6] + +KEEP COPYRIGHT_SERVICE_LABEL af63e11b9643762985255709a4a9bb2b +BELONGS ya.make + License text: + Copyright (c) 2023 sfparse contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/sfparse/COPYING [3:3] + lib/sfparse/sfparse.c [4:6] + lib/sfparse/sfparse.h [4:6] + +KEEP COPYRIGHT_SERVICE_LABEL b9bce4a8047145ca716cda7c1ba12739 +BELONGS ya.make + License text: + * Copyright (c) 2018 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2017 nghttp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/includes/nghttp3/nghttp3.h [4:6] + +KEEP COPYRIGHT_SERVICE_LABEL bc545ae6368aee638646db325e41a41c +BELONGS ya.make + License text: + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/includes/nghttp3/nghttp3.h [4:6] + lib/nghttp3_buf.c [4:5] + lib/nghttp3_buf.h [4:5] + lib/nghttp3_conv.c [4:5] + lib/nghttp3_conv.h [4:5] + lib/nghttp3_gaptr.c [4:5] + lib/nghttp3_gaptr.h [4:5] + lib/nghttp3_idtr.c [4:5] + lib/nghttp3_idtr.h [4:5] + lib/nghttp3_macro.h [4:5] + lib/nghttp3_map.c [4:6] + lib/nghttp3_map.h [4:6] + lib/nghttp3_mem.c [4:6] + lib/nghttp3_mem.h [4:6] + lib/nghttp3_pq.c [4:6] + lib/nghttp3_pq.h [4:6] + lib/nghttp3_range.c [4:5] + lib/nghttp3_range.h [4:5] + lib/nghttp3_ringbuf.c [4:5] + lib/nghttp3_ringbuf.h [4:5] + lib/nghttp3_str.c [4:6] + lib/nghttp3_str.h [4:6] + +KEEP COPYRIGHT_SERVICE_LABEL c063623f476671a53060cbaa3eda1e6b +BELONGS ya.make + License text: + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2013 nghttp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/nghttp3_frame.c [4:5] + lib/nghttp3_frame.h [4:5] + lib/nghttp3_qpack.c [4:5] + lib/nghttp3_qpack.h [4:5] + lib/nghttp3_qpack_huffman.c [4:5] + lib/nghttp3_qpack_huffman.h [4:5] + lib/nghttp3_qpack_huffman_data.c [4:5] + +KEEP COPYRIGHT_SERVICE_LABEL c6a4928114aae275ca6bc55aac9b378e +BELONGS ya.make + License text: + Copyright (c) 2019 nghttp3 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + COPYING [3:3] + README.rst [73:73] + lib/includes/nghttp3/version.h [4:5] + lib/nghttp3_buf.c [4:5] + lib/nghttp3_buf.h [4:5] + lib/nghttp3_conn.c [4:4] + lib/nghttp3_conn.h [4:4] + lib/nghttp3_conv.c [4:5] + lib/nghttp3_conv.h [4:5] + lib/nghttp3_debug.c [4:5] + lib/nghttp3_debug.h [4:5] + lib/nghttp3_err.c [4:4] + lib/nghttp3_err.h [4:4] + lib/nghttp3_frame.c [4:5] + lib/nghttp3_frame.h [4:5] + lib/nghttp3_gaptr.c [4:5] + lib/nghttp3_gaptr.h [4:5] + lib/nghttp3_http.c [4:5] + lib/nghttp3_http.h [4:5] + lib/nghttp3_idtr.c [4:5] + lib/nghttp3_idtr.h [4:5] + lib/nghttp3_ksl.c [4:5] + lib/nghttp3_ksl.h [4:5] + lib/nghttp3_macro.h [4:5] + lib/nghttp3_map.c [4:6] + lib/nghttp3_map.h [4:6] + lib/nghttp3_mem.c [4:6] + lib/nghttp3_mem.h [4:6] + lib/nghttp3_pq.c [4:6] + lib/nghttp3_pq.h [4:6] + lib/nghttp3_qpack.c [4:5] + lib/nghttp3_qpack.h [4:5] + lib/nghttp3_qpack_huffman.c [4:5] + lib/nghttp3_qpack_huffman.h [4:5] + lib/nghttp3_qpack_huffman_data.c [4:5] + lib/nghttp3_range.c [4:5] + lib/nghttp3_range.h [4:5] + lib/nghttp3_rcbuf.c [4:5] + lib/nghttp3_rcbuf.h [4:5] + lib/nghttp3_ringbuf.c [4:5] + lib/nghttp3_ringbuf.h [4:5] + lib/nghttp3_str.c [4:6] + lib/nghttp3_str.h [4:6] + lib/nghttp3_stream.c [4:4] + lib/nghttp3_stream.h [4:4] + lib/nghttp3_tnode.c [4:4] + lib/nghttp3_tnode.h [4:4] + lib/nghttp3_vec.c [4:5] + lib/nghttp3_vec.h [4:5] + lib/nghttp3_version.c [4:4] + lib/sfparse/sfparse.c [4:6] + lib/sfparse/sfparse.h [4:6] + +KEEP COPYRIGHT_SERVICE_LABEL c812bfe524d8bc74ad8cf40a45902020 +BELONGS ya.make + License text: + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/nghttp3_map.c [4:6] + lib/nghttp3_map.h [4:6] + lib/nghttp3_pq.c [4:6] + lib/nghttp3_pq.h [4:6] + lib/nghttp3_str.c [4:6] + lib/nghttp3_str.h [4:6] + +KEEP COPYRIGHT_SERVICE_LABEL cb27ea2f3cf1cca44a3fdc2d80ec9197 +BELONGS ya.make + License text: + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2016 nghttp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/nghttp3_debug.c [4:5] + lib/nghttp3_debug.h [4:5] + lib/nghttp3_rcbuf.c [4:5] + lib/nghttp3_rcbuf.h [4:5] + +KEEP COPYRIGHT_SERVICE_LABEL d89f9db9c9889910b44184610d7947e1 +BELONGS ya.make + License text: + * Copyright (c) 2022 nghttp3 contributors + * Copyright (c) 2022 ngtcp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/nghttp3_balloc.c [4:5] + lib/nghttp3_balloc.h [4:5] + lib/nghttp3_objalloc.c [4:5] + lib/nghttp3_objalloc.h [4:5] + lib/nghttp3_opl.c [4:5] + lib/nghttp3_opl.h [4:5] + lib/nghttp3_unreachable.c [4:5] + lib/nghttp3_unreachable.h [4:5] + +KEEP COPYRIGHT_SERVICE_LABEL d8ca50c11a8cd311a31e6462c4b42555 +BELONGS ya.make + License text: + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2014 nghttp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/nghttp3_mem.c [4:6] + lib/nghttp3_mem.h [4:6] diff --git a/contrib/libs/nghttp3/.yandex_meta/devtools.licenses.report b/contrib/libs/nghttp3/.yandex_meta/devtools.licenses.report new file mode 100644 index 0000000000..ac35088168 --- /dev/null +++ b/contrib/libs/nghttp3/.yandex_meta/devtools.licenses.report @@ -0,0 +1,167 @@ +# File format ($ symbol means the beginning of a line): +# +# $ # this message +# $ # ======================= +# $ # comments (all commentaries should starts with some number of spaces and # symbol) +# $ IGNORE_FILES {file1.ext1} {file2.ext2} - (optional) ignore listed files when generating license macro and credits +# $ RENAME {original license id} TO {new license id} # user comments - (optional) use {new license id} instead {original license id} in ya.make files +# $ # user comments +# $ +# ${action} {license id} {license text hash} +# $BELONGS ./ya/make/file/relative/path/1/ya.make ./ya/make/2/ya.make +# ${all_file_action} filename +# $ # user commentaries (many lines) +# $ generated description - files with this license, license text... (some number of lines that starts with some number of spaces, do not modify) +# ${action} {license spdx} {license text hash} +# $BELONGS ./ya/make/file/relative/path/3/ya.make +# ${all_file_action} filename +# $ # user commentaries +# $ generated description +# $ ... +# +# You can modify action, all_file_action and add commentaries +# Available actions: +# keep - keep license in contrib and use in credits +# skip - skip license +# remove - remove all files with this license +# rename - save license text/links into licenses texts file, but not store SPDX into LINCENSE macro. You should store correct license id into devtools.license.spdx.txt file +# +# {all file action} records will be generated when license text contains filename that exists on filesystem (in contrib directory) +# We suppose that that files can contain some license info +# Available all file actions: +# FILE_IGNORE - ignore file (do nothing) +# FILE_INCLUDE - include all file data into licenses text file +# ======================= + +KEEP MIT 14395d49cccf7dd9c262788c7c3eb609 +BELONGS ya.make +FILE_INCLUDE AUTHORS found in files: COPYING at line 19, lib/sfparse/COPYING at line 19 + Note: matched license text is too long. Read it in the source files. + Scancode info: + Original SPDX id: MIT + Score : 100.00 + Match type : TEXT + Links : http://opensource.org/licenses/mit-license.php, https://spdx.org/licenses/MIT + Files with this license: + COPYING [5:22] + lib/sfparse/COPYING [5:22] + +KEEP MIT 8c6b397cbef46628bea401075e15b1d5 +BELONGS ya.make + License text: + The MIT License + Scancode info: + Original SPDX id: MIT + Score : 100.00 + Match type : REFERENCE + Links : http://opensource.org/licenses/mit-license.php, https://spdx.org/licenses/MIT + Files with this license: + COPYING [1:1] + lib/sfparse/COPYING [1:1] + +KEEP MIT a00cb0c2918046e6e350bbe37dc87fff +BELONGS ya.make + License text: + License + ------- + The MIT License + Scancode info: + Original SPDX id: MIT + Score : 100.00 + Match type : NOTICE + Links : http://opensource.org/licenses/mit-license.php, https://spdx.org/licenses/MIT + Files with this license: + README.rst [68:71] + +KEEP MIT a3a8f7feced3937b87cd090ba748e24b +BELONGS ya.make +FILE_INCLUDE AUTHORS found in files: lib/includes/nghttp3/nghttp3.h at line 22, lib/includes/nghttp3/version.h at line 21, lib/nghttp3_balloc.c at line 21, lib/nghttp3_balloc.h at line 21, lib/nghttp3_buf.c at line 21, lib/nghttp3_buf.h at line 21, lib/nghttp3_conn.c at line 20, lib/nghttp3_conn.h at line 20, lib/nghttp3_conv.c at line 21, lib/nghttp3_conv.h at line 21, lib/nghttp3_debug.c at line 21, lib/nghttp3_debug.h at line 21, lib/nghttp3_err.c at line 20, lib/nghttp3_err.h at line 20, lib/nghttp3_frame.c at line 21, lib/nghttp3_frame.h at line 21, lib/nghttp3_gaptr.c at line 21, lib/nghttp3_gaptr.h at line 21, lib/nghttp3_http.c at line 21, lib/nghttp3_http.h at line 21, lib/nghttp3_idtr.c at line 21, lib/nghttp3_idtr.h at line 21, lib/nghttp3_ksl.c at line 21, lib/nghttp3_ksl.h at line 21, lib/nghttp3_macro.h at line 21, lib/nghttp3_map.c at line 22, lib/nghttp3_map.h at line 22, lib/nghttp3_mem.c at line 22, lib/nghttp3_mem.h at line 22, lib/nghttp3_objalloc.c at line 21, lib/nghttp3_objalloc.h at line 21, lib/nghttp3_opl.c at line 21, lib/nghttp3_opl.h at line 21, lib/nghttp3_pq.c at line 22, lib/nghttp3_pq.h at line 22, lib/nghttp3_qpack.c at line 21, lib/nghttp3_qpack.h at line 21, lib/nghttp3_qpack_huffman.c at line 21, lib/nghttp3_qpack_huffman.h at line 21, lib/nghttp3_qpack_huffman_data.c at line 21, lib/nghttp3_range.c at line 21, lib/nghttp3_range.h at line 21, lib/nghttp3_rcbuf.c at line 21, lib/nghttp3_rcbuf.h at line 21, lib/nghttp3_ringbuf.c at line 21, lib/nghttp3_ringbuf.h at line 21, lib/nghttp3_str.c at line 22, lib/nghttp3_str.h at line 22, lib/nghttp3_stream.c at line 20, lib/nghttp3_stream.h at line 20, lib/nghttp3_tnode.c at line 20, lib/nghttp3_tnode.h at line 20, lib/nghttp3_unreachable.c at line 21, lib/nghttp3_unreachable.h at line 21, lib/nghttp3_vec.c at line 21, lib/nghttp3_vec.h at line 21, lib/nghttp3_version.c at line 20, lib/sfparse/sfparse.c at line 22, lib/sfparse/sfparse.h at line 22 + Note: matched license text is too long. Read it in the source files. + Scancode info: + Original SPDX id: MIT + Score : 100.00 + Match type : TEXT + Links : http://opensource.org/licenses/mit-license.php, https://spdx.org/licenses/MIT + Files with this license: + lib/includes/nghttp3/nghttp3.h [8:25] + lib/includes/nghttp3/version.h [7:24] + lib/nghttp3_balloc.c [7:24] + lib/nghttp3_balloc.h [7:24] + lib/nghttp3_buf.c [7:24] + lib/nghttp3_buf.h [7:24] + lib/nghttp3_conn.c [6:23] + lib/nghttp3_conn.h [6:23] + lib/nghttp3_conv.c [7:24] + lib/nghttp3_conv.h [7:24] + lib/nghttp3_debug.c [7:24] + lib/nghttp3_debug.h [7:24] + lib/nghttp3_err.c [6:23] + lib/nghttp3_err.h [6:23] + lib/nghttp3_frame.c [7:24] + lib/nghttp3_frame.h [7:24] + lib/nghttp3_gaptr.c [7:24] + lib/nghttp3_gaptr.h [7:24] + lib/nghttp3_http.c [7:24] + lib/nghttp3_http.h [7:24] + lib/nghttp3_idtr.c [7:24] + lib/nghttp3_idtr.h [7:24] + lib/nghttp3_ksl.c [7:24] + lib/nghttp3_ksl.h [7:24] + lib/nghttp3_macro.h [7:24] + lib/nghttp3_map.c [8:25] + lib/nghttp3_map.h [8:25] + lib/nghttp3_mem.c [8:25] + lib/nghttp3_mem.h [8:25] + lib/nghttp3_objalloc.c [7:24] + lib/nghttp3_objalloc.h [7:24] + lib/nghttp3_opl.c [7:24] + lib/nghttp3_opl.h [7:24] + lib/nghttp3_pq.c [8:25] + lib/nghttp3_pq.h [8:25] + lib/nghttp3_qpack.c [7:24] + lib/nghttp3_qpack.h [7:24] + lib/nghttp3_qpack_huffman.c [7:24] + lib/nghttp3_qpack_huffman.h [7:24] + lib/nghttp3_qpack_huffman_data.c [7:24] + lib/nghttp3_range.c [7:24] + lib/nghttp3_range.h [7:24] + lib/nghttp3_rcbuf.c [7:24] + lib/nghttp3_rcbuf.h [7:24] + lib/nghttp3_ringbuf.c [7:24] + lib/nghttp3_ringbuf.h [7:24] + lib/nghttp3_str.c [8:25] + lib/nghttp3_str.h [8:25] + lib/nghttp3_stream.c [6:23] + lib/nghttp3_stream.h [6:23] + lib/nghttp3_tnode.c [6:23] + lib/nghttp3_tnode.h [6:23] + lib/nghttp3_unreachable.c [7:24] + lib/nghttp3_unreachable.h [7:24] + lib/nghttp3_vec.c [7:24] + lib/nghttp3_vec.h [7:24] + lib/nghttp3_version.c [6:23] + lib/sfparse/sfparse.c [8:25] + lib/sfparse/sfparse.h [8:25] + +KEEP FSFAP d02cc4799cbd521d2aa8c3ff19e655f6 +BELONGS ya.make + Note: matched license text is too long. Read it in the source files. + Scancode info: + Original SPDX id: FSFAP + Score : 100.00 + Match type : TEXT + Links : http://www.gnu.org/prep/maintain/html_node/License-Notices-for-Other-Files.html, https://spdx.org/licenses/FSFAP + Files with this license: + INSTALL [7:10] + +KEEP MIT f759889bc387afe17a80ab852d7af858 +BELONGS ya.make +FILE_INCLUDE AUTHORS found in files: lib/sfparse/sfparse.c at line 808 + Note: matched license text is too long. Read it in the source files. + Scancode info: + Original SPDX id: MIT + Score : 100.00 + Match type : TEXT + Links : http://opensource.org/licenses/mit-license.php, https://spdx.org/licenses/MIT + Files with this license: + lib/sfparse/sfparse.c [794:812] diff --git a/contrib/libs/nghttp3/.yandex_meta/licenses.list.txt b/contrib/libs/nghttp3/.yandex_meta/licenses.list.txt new file mode 100644 index 0000000000..8f0e93ab06 --- /dev/null +++ b/contrib/libs/nghttp3/.yandex_meta/licenses.list.txt @@ -0,0 +1,184 @@ +====================COPYRIGHT==================== + Copyright (C) 1994-1996, 1999-2002, 2004-2017, 2020-2021 Free +Software Foundation, Inc. + + +====================COPYRIGHT==================== + * Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de> + + +====================COPYRIGHT==================== + * Copyright (c) 2018 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2017 nghttp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2013 nghttp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2015 nghttp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2016 nghttp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2016 ngtcp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2014 nghttp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2018 ngtcp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2022 nghttp3 contributors + * Copyright (c) 2022 ngtcp2 contributors + + +====================COPYRIGHT==================== +/* Copyright (c) 2008-2010 Bjoern Hoehrmann <bjoern@hoehrmann.de> + * See http://bjoern.hoehrmann.de/utf-8/decoder/dfa/ for details. + + +====================COPYRIGHT==================== +Copyright (c) 2019 nghttp3 contributors + + +====================COPYRIGHT==================== +Copyright (c) 2023 sfparse contributors + + +====================FSFAP==================== + Copying and distribution of this file, with or without modification, +are permitted in any medium without royalty provided the copyright +notice and this notice are preserved. This file is offered as-is, +without warranty of any kind. + + +====================File: AUTHORS==================== +Alexis La Goutte +Amir Livneh +Bruno S Marques +Bryan Call +Cheng Zhao +Daniel Bevenius +Daniel Stenberg +Deel +Dimitris Apostolou +Don +Don Olmstead +Force Charlie +James M Snell +Javier Blazquez +Li Xinwei +Marek Ludha +Nishant Nori +Ondřej Koláček +Peter Wu +Tal Regev +Tatsuhiro Tsujikawa +Tim Gates +Toni Uhlig +Valère Plantevin +Viktor Szakats +Your Name +lhuang04 + + +====================MIT==================== + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + + +====================MIT==================== + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + +====================MIT==================== +License +------- + +The MIT License + + +====================MIT==================== +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +====================MIT==================== +The MIT License diff --git a/contrib/libs/nghttp3/.yandex_meta/override.nix b/contrib/libs/nghttp3/.yandex_meta/override.nix new file mode 100644 index 0000000000..5bec6bee15 --- /dev/null +++ b/contrib/libs/nghttp3/.yandex_meta/override.nix @@ -0,0 +1,15 @@ +pkgs: attrs: with pkgs; with attrs; rec { + pname = "nghttp3"; + version = "1.6.0"; + + nativeBuildInputs = [ + cmake pkg-config autoconf libtool automake + ]; + + buildInputs = [ ]; + + src = fetchurl { + url = "https://github.com/ngtcp2/nghttp3/releases/download/v${version}/nghttp3-${version}.tar.xz"; + hash = "sha256-6qkBlUvElANNNzjvGRMN5pOH1qPaApBExg2drpF5Ko0="; + }; +} diff --git a/contrib/libs/nghttp3/AUTHORS b/contrib/libs/nghttp3/AUTHORS new file mode 100644 index 0000000000..9bdc2113a9 --- /dev/null +++ b/contrib/libs/nghttp3/AUTHORS @@ -0,0 +1,27 @@ +Alexis La Goutte +Amir Livneh +Bruno S Marques +Bryan Call +Cheng Zhao +Daniel Bevenius +Daniel Stenberg +Deel +Dimitris Apostolou +Don +Don Olmstead +Force Charlie +James M Snell +Javier Blazquez +Li Xinwei +Marek Ludha +Nishant Nori +Ondřej Koláček +Peter Wu +Tal Regev +Tatsuhiro Tsujikawa +Tim Gates +Toni Uhlig +Valère Plantevin +Viktor Szakats +Your Name +lhuang04 diff --git a/contrib/libs/nghttp3/COPYING b/contrib/libs/nghttp3/COPYING new file mode 100644 index 0000000000..37562ea58c --- /dev/null +++ b/contrib/libs/nghttp3/COPYING @@ -0,0 +1,22 @@ +The MIT License + +Copyright (c) 2019 nghttp3 contributors + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/contrib/libs/nghttp3/ChangeLog b/contrib/libs/nghttp3/ChangeLog new file mode 100644 index 0000000000..84280d2a91 --- /dev/null +++ b/contrib/libs/nghttp3/ChangeLog @@ -0,0 +1,416 @@ +commit e79890583f1ba8bb4d58d7456043a7e65205b34d +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-10-05 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-10-05 + + Bump package and library versions + +commit 54cfefe9c32387f1085766f60520bc458f7f374d +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-10-05 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-10-05 + + Update AUTHORS + +commit 107aef87ce82eacab564b10eb1eead752bde1507 +Merge: 6e1a15d 0758422 +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-10-03 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-10-03 + + Merge pull request #267 from ngtcp2/check-header-value-avx2 + + Optimize nghttp3_check_header_value + +commit 6e1a15d42d8484425bf29744aaeef6631c8873f5 +Merge: ade24b7 94fce2e +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-10-02 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-10-02 + + Merge pull request #268 from ngtcp2/cmake-remove-trailing-ws + + cmake: Remove trailing spaces + +commit 94fce2ec75fa9eb27144590ece9006da5541db9c +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-10-02 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-10-02 + + cmake: Remove trailing spaces + +commit 07584226aa11a92f78072a4925d3eac81e4bd19c +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-10-01 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-10-01 + + Optimize nghttp3_check_header_value + + Optimize nghttp3_check_header_value with AVX2 instructions if + available. + +commit ade24b7f2da755485149ebca0340264b99abae8d +Merge: bdfd99f f808f05 +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-10-01 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-10-01 + + Merge pull request #266 from ngtcp2/revert-265 + + Revert "Optimize nghttp3_check_header_value" + +commit f808f05439ad903034e30d05ee7f0023ad12fb48 +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-10-01 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-10-01 + + Revert "Optimize nghttp3_check_header_value" + + This reverts commit 21c3e2ffaeda7d2f69f9718945c79b846e6443d2. + +commit bdfd99f2f41805c4a9513e523019c9e3c9b1d17d +Merge: d602bd1 21c3e2f +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-09-30 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-09-30 + + Merge pull request #265 from ngtcp2/check-header-value-sse42 + + Optimize nghttp3_check_header_value + +commit d602bd1ab20b49066614779dc272996c184abce7 +Merge: 68bc239 8fd4bd8 +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-09-30 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-09-30 + + Merge pull request #264 from ngtcp2/limit-huffman-decode + + Do huffman encoding only when the reduction is more than 25% + +commit 21c3e2ffaeda7d2f69f9718945c79b846e6443d2 +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-09-29 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-09-30 + + Optimize nghttp3_check_header_value + + Optimize nghttp3_check_header_value with SSE4.2 instructions if + available. + +commit 8fd4bd833e764f5b0d46f7b8ed2ae2708cafbfd1 +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-09-29 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-09-29 + + Do huffman encoding only when the reduction is more than 25% + + Do huffman encoding only when the reduction is more than 25% because + huffman decoding is quite costly for relatively large field values. + +commit 68bc239d34c1ee43647993c722e3db8bdbc1238f +Merge: 0889971 76c42e2 +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-09-29 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-09-29 + + Merge pull request #263 from ngtcp2/qpack-opcode-switch + + qpack: Switch on opcode + +commit 76c42e277f6ff2062a9311e2fd11653c28f0e97b +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-09-27 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-09-27 + + qpack: Switch on opcode + +commit 0889971045eb3f2199c3763599227a0a256a018e +Merge: 02ea26c 4ff70b1 +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-09-25 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-09-25 + + Merge pull request #262 from ngtcp2/simplify-http-on-req-resp-header + + Simplify http_request_on_header and http_response_on_header + +commit 4ff70b1254296800dc8387862e49b51091ce23b9 +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-09-25 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-09-25 + + Simplify http_request_on_header and http_response_on_header + +commit 02ea26c95bcd40b06734ad01e77033f9be4e30c5 +Merge: ccbc5dd 1199810 +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-09-25 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-09-25 + + Merge pull request #261 from ngtcp2/refactor-http-on-header + + Refactor http on header + +commit 1199810f2bf48279759e86edabfd99b2cc3b165f +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-09-24 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-09-25 + + Add gennmchartbl.py + +commit 3e53cbbd1b1785187d896085480582906d69a00e +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-09-24 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-09-25 + + Refactor nghttp3_http_on_header + + Rearrange switch statements so that token switch is done just once. + Apply some optimisations by removing unneeded lines of code and + conditionals. + +commit ccbc5ddd25a2bca46e120131f84aa6f59c4ba93d +Merge: 3e14e6f 8ff5d34 +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-09-19 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-09-19 + + Merge pull request #260 from ngtcp2/ispow2 + + ispow2: Better fallback implementation + +commit 8ff5d342097a164780e9b0388e82a7c6e78773ae +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-09-19 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-09-19 + + ispow2: Better fallback implementation + +commit 3e14e6f020c4105d8358189e767a8c570f9612b0 +Merge: a872b6c c6669de +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-09-14 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-09-14 + + Merge pull request #259 from ngtcp2/clang-format-fuzz + + clang-format files under fuzz + +commit c6669deacd8bbe39e842f8d415bf2caf9d460e22 +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-09-14 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-09-14 + + clang-format files under fuzz + +commit a872b6ca8a1fef513e8f4b2d50ebc0dd4906879e +Merge: b970523 8511829 +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-09-14 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-09-14 + + Merge pull request #258 from ngtcp2/macro-comments + + Consistent macro comments + +commit 85118298ee2051508809f48bba06a997b62c63e5 +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-09-14 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-09-14 + + Consistent macro comments + + Make macro comments consistent throughout the codebase. Fixup + HAVE_BE64TOH and HAVE_BSWAP_64 cmakedefine to match the semantics of + autotools. Fix nghttp3_ntohl64 and nghttp3_htonl64 for bigendian in + examples. + +commit b9705237a948c2ee7ea239b2392b13db7c85ceca +Merge: 31a1543 c75f960 +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-09-11 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-09-11 + + Merge pull request #256 from ngtcp2/optimize-read-varint + + Optimize nghttp3_read_varint + +commit c75f960a12d4c9914987f328b3cf98661202164a +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-09-11 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-09-11 + + Optimize nghttp3_read_varint + +commit 31a1543276ecb7fcab2b16b8ba2655e478e5d2b4 +Merge: 7473d2f a0e5fb0 +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-09-10 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-09-10 + + Merge pull request #255 from ngtcp2/map-update + + nghttp3_map: Port ngtcp2 changes + +commit a0e5fb0bc3f11faf493ce0e50294e38b43b37aa4 +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-09-10 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-09-10 + + nghttp3_map: Port ngtcp2 changes + +commit 7473d2f0aa6a2edd15be3e06fcecdac576a9fab0 +Merge: 99ba689 8a8d45c +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-09-04 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-09-04 + + Merge pull request #254 from ngtcp2/amend-253 + + Fix potential overflow + +commit 8a8d45cb734eb8087773988cafee3a15906e7f52 +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-09-04 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-09-04 + + Fix potential overflow + +commit 99ba6896a219cdd85c29e20068c7a3b946d4c57f +Merge: 2c4a381 b8c6cca +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-09-04 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-09-04 + + Merge pull request #253 from ngtcp2/qpack-buf-reserve + + Refactor qpack reserve_buf + +commit b8c6cca46afac0ca60e927377cc6831de76e76f1 +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-09-04 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-09-04 + + Refactor qpack reserve_buf + + Previously, reserve_buf_small and reserve_buf were doing the same + thing. Remove them and call reserve_buf_internal directly. Optimize + the code to round up to the next highest power of 2. + +commit 2c4a3816bbeab45e7c9092aecc915b54a3c88ccb +Merge: e9f34d9 f4d323a +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-08-31 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-08-31 + + Merge pull request #252 from fcharlie/arm-intrinsics + + Fix ARM64 __popcnt intrinsics + +commit f4d323ad0a2d5ac8a6445cb7b06e3efa95d19f39 +Author: Force Charlie <charlieio@outlook.com> +AuthorDate: 2024-08-30 +Commit: Force Charlie <charlieio@outlook.com> +CommitDate: 2024-08-30 + + Fix ARM64 __popcnt intrinsics + +commit e9f34d95a81b2792605f7d8c78dd30c9112d3d04 +Merge: 32a66a3 a9e8cd5 +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-08-30 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-08-30 + + Merge pull request #250 from talregev/TalR/fix_include_export + + Fix include export + +commit a9e8cd5d9ac82b9e4385cdfdec0d0e231b22f662 +Author: Tal Regev <tal.regev@gmail.com> +AuthorDate: 2024-08-30 +Commit: Tal Regev <tal.regev@gmail.com> +CommitDate: 2024-08-30 + + Fix include export + +commit 32a66a3fe442835568072a0f0d78ad1a54bb882a +Merge: 8067396 c7bd7f3 +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-08-28 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-08-28 + + Merge pull request #248 from talregev/TalR/cmake_export + + Fix cmake export + +commit c7bd7f3666babf7ed4cd411120031d78c53810e8 +Author: Tal Regev <tal.regev@gmail.com> +AuthorDate: 2024-08-28 +Commit: Tal Regev <tal.regev@gmail.com> +CommitDate: 2024-08-28 + + Fix cmake export + +commit 806739676fcf0ba61f94c23e4b35567f697ee013 +Merge: 3c7c7f2 96737c0 +Author: Tatsuhiro Tsujikawa <404610+tatsuhiro-t@users.noreply.github.com> +AuthorDate: 2024-08-28 +Commit: GitHub <noreply@github.com> +CommitDate: 2024-08-28 + + Merge pull request #249 from ngtcp2/change-clang-format-options + + Change clang-format options + +commit 96737c00a942d0911f59fa7265954b08f0e09114 +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-08-28 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-08-28 + + Change clang-format options + +commit 3c7c7f29b1eba52363fe01907d796b96b38a0ee8 +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-08-24 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-08-24 + + Bump package version diff --git a/contrib/libs/nghttp3/INSTALL b/contrib/libs/nghttp3/INSTALL new file mode 100755 index 0000000000..e82fd21de2 --- /dev/null +++ b/contrib/libs/nghttp3/INSTALL @@ -0,0 +1,368 @@ +Installation Instructions +************************* + + Copyright (C) 1994-1996, 1999-2002, 2004-2017, 2020-2021 Free +Software Foundation, Inc. + + Copying and distribution of this file, with or without modification, +are permitted in any medium without royalty provided the copyright +notice and this notice are preserved. 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If +'config.sub' isn't included in this package, then this package doesn't +need to know the machine type. + + If you are _building_ compiler tools for cross-compiling, you should +use the option '--target=TYPE' to select the type of system they will +produce code for. + + If you want to _use_ a cross compiler, that generates code for a +platform different from the build platform, you should specify the +"host" platform (i.e., that on which the generated programs will +eventually be run) with '--host=TYPE'. + +Sharing Defaults +================ + + If you want to set default values for 'configure' scripts to share, +you can create a site shell script called 'config.site' that gives +default values for variables like 'CC', 'cache_file', and 'prefix'. +'configure' looks for 'PREFIX/share/config.site' if it exists, then +'PREFIX/etc/config.site' if it exists. Or, you can set the +'CONFIG_SITE' environment variable to the location of the site script. +A warning: not all 'configure' scripts look for a site script. + +Defining Variables +================== + + Variables not defined in a site shell script can be set in the +environment passed to 'configure'. However, some packages may run +configure again during the build, and the customized values of these +variables may be lost. In order to avoid this problem, you should set +them in the 'configure' command line, using 'VAR=value'. For example: + + ./configure CC=/usr/local2/bin/gcc + +causes the specified 'gcc' to be used as the C compiler (unless it is +overridden in the site shell script). + +Unfortunately, this technique does not work for 'CONFIG_SHELL' due to an +Autoconf limitation. Until the limitation is lifted, you can use this +workaround: + + CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash + +'configure' Invocation +====================== + + 'configure' recognizes the following options to control how it +operates. + +'--help' +'-h' + Print a summary of all of the options to 'configure', and exit. + +'--help=short' +'--help=recursive' + Print a summary of the options unique to this package's + 'configure', and exit. The 'short' variant lists options used only + in the top level, while the 'recursive' variant lists options also + present in any nested packages. + +'--version' +'-V' + Print the version of Autoconf used to generate the 'configure' + script, and exit. + +'--cache-file=FILE' + Enable the cache: use and save the results of the tests in FILE, + traditionally 'config.cache'. FILE defaults to '/dev/null' to + disable caching. + +'--config-cache' +'-C' + Alias for '--cache-file=config.cache'. + +'--quiet' +'--silent' +'-q' + Do not print messages saying which checks are being made. To + suppress all normal output, redirect it to '/dev/null' (any error + messages will still be shown). + +'--srcdir=DIR' + Look for the package's source code in directory DIR. Usually + 'configure' can determine that directory automatically. + +'--prefix=DIR' + Use DIR as the installation prefix. *note Installation Names:: for + more details, including other options available for fine-tuning the + installation locations. + +'--no-create' +'-n' + Run the configure checks, but stop before creating any output + files. + +'configure' also accepts some other, not widely useful, options. Run +'configure --help' for more details. diff --git a/contrib/libs/nghttp3/README b/contrib/libs/nghttp3/README new file mode 100644 index 0000000000..5ccc0ea36b --- /dev/null +++ b/contrib/libs/nghttp3/README @@ -0,0 +1 @@ +See README.rst diff --git a/contrib/libs/nghttp3/README.rst b/contrib/libs/nghttp3/README.rst new file mode 100644 index 0000000000..950c7c59f7 --- /dev/null +++ b/contrib/libs/nghttp3/README.rst @@ -0,0 +1,73 @@ +nghttp3 +======= + +nghttp3 is an implementation of `RFC 9114 +<https://datatracker.ietf.org/doc/html/rfc9114>`_ HTTP/3 mapping over +QUIC and `RFC 9204 <https://datatracker.ietf.org/doc/html/rfc9204>`_ +QPACK in C. + +It does not depend on any particular QUIC transport implementation. + +Documentation +------------- + +`Online documentation <https://nghttp2.org/nghttp3/>`_ is available. + +Build from git +--------------- + +.. code-block:: shell + + $ git clone https://github.com/ngtcp2/nghttp3 + $ cd nghttp3 + $ git submodule update --init + $ autoreconf -i + $ ./configure + $ make -j$(nproc) check + +HTTP/3 +------ + +This library implements `RFC 9114 +<https://datatracker.ietf.org/doc/html/rfc9114>`_ HTTP/3. It does not +support server push. + +The following extensions have been implemented: + +- `Extensible Prioritization Scheme for HTTP + <https://datatracker.ietf.org/doc/html/rfc9218>`_ +- `Bootstrapping WebSockets with HTTP/3 + <https://datatracker.ietf.org/doc/html/rfc9220>`_ + +It can also send and receive `SETTINGS_H3_DATAGRAM` from `HTTP +Datagrams and the Capsule Protocol +<https://datatracker.ietf.org/doc/html/rfc9297>`_. + +QPACK +----- + +This library implements `RFC 9204 +<https://datatracker.ietf.org/doc/html/rfc9204>`_ QPACK. It supports +dynamic table. + +Optimizations +------------- + +This library optionally uses AVX2, if available, to optimize its +performance. To compile with AVX2, add ``-mavx2`` to CFLAGS. Note +that by default, CFLAGS is set to ``-g -O2``. When specifying CFLAGS, +include them as well (e.g., ``-g -O2 -mavx2``). + +Examples +-------- + +- client: https://github.com/ngtcp2/ngtcp2/blob/main/examples/client.cc +- server: https://github.com/ngtcp2/ngtcp2/blob/main/examples/server.cc +- curl: https://github.com/curl/curl/blob/master/lib/vquic/curl_ngtcp2.c + +License +------- + +The MIT License + +Copyright (c) 2019 nghttp3 contributors diff --git a/contrib/libs/nghttp3/config-ios.h b/contrib/libs/nghttp3/config-ios.h new file mode 100644 index 0000000000..6cbc4ce682 --- /dev/null +++ b/contrib/libs/nghttp3/config-ios.h @@ -0,0 +1,2 @@ +#include "config-linux.h" +#include "config-osx.h" diff --git a/contrib/libs/nghttp3/config-linux.h b/contrib/libs/nghttp3/config-linux.h new file mode 100644 index 0000000000..8f80508526 --- /dev/null +++ b/contrib/libs/nghttp3/config-linux.h @@ -0,0 +1,31 @@ + +/* Define to `int' if <sys/types.h> does not define. */ +/* #undef ssize_t */ + +/* Define to 1 to enable debug output. */ +/* #undef DEBUGBUILD */ + +/* Define to 1 if you have the <arpa/inet.h> header file. */ +#define HAVE_ARPA_INET_H 1 + +/* Define to 1 if you have the <unistd.h> header file. */ +#define HAVE_UNISTD_H 1 + +/* Define to 1 if you have the <sys/endian.h> header file. */ +/* #undef HAVE_SYS_ENDIAN_H */ + +/* Define to 1 if you have the <endian.h> header file. */ +#define HAVE_ENDIAN_H 1 + +/* Define to 1 if you have the <byteswap.h> header file. */ +#define HAVE_BYTESWAP_H 1 + +/* Define to 1 if you have the `be64toh' function, otherwise 0. */ +#define HAVE_DECL_BE64TOH 1 + +/* Define to 1 if you have the `bswap_64' function, otherwise 0. */ +#define HAVE_DECL_BSWAP_64 1 + +/* Define WORDS_BIGENDIAN to 1 if target architecture is big + endian. */ +/* #undef WORDS_BIGENDIAN */ diff --git a/contrib/libs/nghttp3/config-osx.h b/contrib/libs/nghttp3/config-osx.h new file mode 100644 index 0000000000..8dd585cd9d --- /dev/null +++ b/contrib/libs/nghttp3/config-osx.h @@ -0,0 +1,9 @@ +#include "config-linux.h" + +#undef HAVE_ENDIAN_H + +#undef HAVE_BYTESWAP_H + +#undef HAVE_DECL_BE64TOH + +#undef HAVE_DECL_BSWAP_64 diff --git a/contrib/libs/nghttp3/config-win.h b/contrib/libs/nghttp3/config-win.h new file mode 100644 index 0000000000..1f524ea23b --- /dev/null +++ b/contrib/libs/nghttp3/config-win.h @@ -0,0 +1,13 @@ +#include "config-linux.h" + +#undef HAVE_ARPA_INET_H + +#undef HAVE_UNISTD_H + +#undef HAVE_ENDIAN_H + +#undef HAVE_BYTESWAP_H + +#undef HAVE_DECL_BE64TOH + +#undef HAVE_DECL_BSWAP_64 diff --git a/contrib/libs/nghttp3/config.h b/contrib/libs/nghttp3/config.h new file mode 100644 index 0000000000..0f06551d66 --- /dev/null +++ b/contrib/libs/nghttp3/config.h @@ -0,0 +1,11 @@ +#pragma once + +#if defined(__IOS__) +# include "config-ios.h" +#elif defined(__APPLE__) +# include "config-osx.h" +#elif defined(_MSC_VER) +# include "config-win.h" +#else +# include "config-linux.h" +#endif diff --git a/contrib/libs/nghttp3/lib/includes/nghttp3/nghttp3.h b/contrib/libs/nghttp3/lib/includes/nghttp3/nghttp3.h new file mode 100644 index 0000000000..89d57a515b --- /dev/null +++ b/contrib/libs/nghttp3/lib/includes/nghttp3/nghttp3.h @@ -0,0 +1,2941 @@ +/* + * nghttp3 + * + * Copyright (c) 2018 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2017 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_H +#define NGHTTP3_H + +/* Define WIN32 when build target is Win32 API (borrowed from + libcurl) */ +#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) +# define WIN32 +#endif /* (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) */ + +#ifdef __cplusplus +extern "C" { +#endif /* defined(__cplusplus) */ + +#include <stdlib.h> +#if defined(_MSC_VER) && (_MSC_VER < 1800) +/* MSVC < 2013 does not have inttypes.h because it is not C99 + compliant. See compiler macros and version number in + https://sourceforge.net/p/predef/wiki/Compilers/ */ +# include <stdint.h> +#else /* !(defined(_MSC_VER) && (_MSC_VER < 1800)) */ +# include <inttypes.h> +#endif /* !(defined(_MSC_VER) && (_MSC_VER < 1800)) */ +#include <sys/types.h> +#include <stdarg.h> +#include <stddef.h> + +#include "version.h" + +#if 1 +# define NGHTTP3_EXTERN +#elif defined(WIN32) +# ifdef BUILDING_NGHTTP3 +# define NGHTTP3_EXTERN __declspec(dllexport) +# else /* !defined(BUILDING_NGHTTP3) */ +# define NGHTTP3_EXTERN __declspec(dllimport) +# endif /* !defined(BUILDING_NGHTTP3) */ +#else /* !(defined(NGHTTP3_STATICLIB) || defined(WIN32)) */ +# ifdef BUILDING_NGHTTP3 +# define NGHTTP3_EXTERN __attribute__((visibility("default"))) +# else /* !defined(BUILDING_NGHTTP3) */ +# define NGHTTP3_EXTERN +# endif /* !defined(BUILDING_NGHTTP3) */ +#endif /* !(defined(NGHTTP3_STATICLIB) || defined(WIN32)) */ + +#ifdef _MSC_VER +# define NGHTTP3_ALIGN(N) __declspec(align(N)) +#else /* !defined(_MSC_VER) */ +# define NGHTTP3_ALIGN(N) __attribute__((aligned(N))) +#endif /* !defined(_MSC_VER) */ + +/** + * @typedef + * + * :type:`nghttp3_ssize` is signed counterpart of size_t. + */ +typedef ptrdiff_t nghttp3_ssize; + +/** + * @macro + * + * :macro:`NGHTTP3_ALPN_H3` is a serialized form of HTTP/3 ALPN + * protocol identifier this library supports. Notice that the first + * byte is the length of the following protocol identifier. + */ +#define NGHTTP3_ALPN_H3 "\x2h3" + +/** + * @macrosection + * + * nghttp3 library error codes + */ + +/** + * @macro + * + * :macro:`NGHTTP3_ERR_INVALID_ARGUMENT` indicates that a passed + * argument is invalid. + */ +#define NGHTTP3_ERR_INVALID_ARGUMENT -101 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_INVALID_STATE` indicates that a requested + * operation is not allowed at the current connection state. + */ +#define NGHTTP3_ERR_INVALID_STATE -102 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_WOULDBLOCK` indicates that an operation might + * block. + */ +#define NGHTTP3_ERR_WOULDBLOCK -103 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_STREAM_IN_USE` indicates that a stream ID is + * already in use. + */ +#define NGHTTP3_ERR_STREAM_IN_USE -104 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_MALFORMED_HTTP_HEADER` indicates that an HTTP + * header field is malformed. + */ +#define NGHTTP3_ERR_MALFORMED_HTTP_HEADER -105 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_REMOVE_HTTP_HEADER` indicates that an HTTP + * header field is discarded. + */ +#define NGHTTP3_ERR_REMOVE_HTTP_HEADER -106 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING` indicates that HTTP + * messaging is malformed. + */ +#define NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING -107 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_QPACK_FATAL` indicates that a fatal error is + * occurred during QPACK processing, and it cannot be recoverable. + */ +#define NGHTTP3_ERR_QPACK_FATAL -108 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_QPACK_HEADER_TOO_LARGE` indicates that a header + * field is too large to process. + */ +#define NGHTTP3_ERR_QPACK_HEADER_TOO_LARGE -109 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_STREAM_NOT_FOUND` indicates that a stream is + * not found. + */ +#define NGHTTP3_ERR_STREAM_NOT_FOUND -110 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_CONN_CLOSING` indicates that a connection is + * closing state. + */ +#define NGHTTP3_ERR_CONN_CLOSING -111 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_STREAM_DATA_OVERFLOW` indicates that the length + * of stream data is too long, and causes overflow. + */ +#define NGHTTP3_ERR_STREAM_DATA_OVERFLOW -112 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED` indicates that a + * QPACK decompression failed. + */ +#define NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED -401 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR` indicates that an + * error occurred while reading QPACK encoder stream. + */ +#define NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR -402 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_QPACK_DECODER_STREAM_ERROR` indicates that an + * error occurred while reading QPACK decoder stream. + */ +#define NGHTTP3_ERR_QPACK_DECODER_STREAM_ERROR -403 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_H3_FRAME_UNEXPECTED` indicates that an + * unexpected HTTP/3 frame is received. + */ +#define NGHTTP3_ERR_H3_FRAME_UNEXPECTED -601 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_H3_FRAME_ERROR` indicates that an HTTP/3 frame + * is malformed. + */ +#define NGHTTP3_ERR_H3_FRAME_ERROR -602 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_H3_MISSING_SETTINGS` indicates that an HTTP/3 + * SETTINGS frame is missing. + */ +#define NGHTTP3_ERR_H3_MISSING_SETTINGS -603 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_H3_INTERNAL_ERROR` indicates an internal error. + */ +#define NGHTTP3_ERR_H3_INTERNAL_ERROR -604 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_H3_CLOSED_CRITICAL_STREAM` indicates that a + * critical stream is closed. + */ +#define NGHTTP3_ERR_H3_CLOSED_CRITICAL_STREAM -605 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_H3_GENERAL_PROTOCOL_ERROR` indicates a general + * protocol error. This is typically a catch-all error. + */ +#define NGHTTP3_ERR_H3_GENERAL_PROTOCOL_ERROR -606 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_H3_ID_ERROR` indicates that an ID related error + * occurred. + */ +#define NGHTTP3_ERR_H3_ID_ERROR -607 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_H3_SETTINGS_ERROR` indicates that an HTTP/3 + * SETTINGS frame is malformed. + */ +#define NGHTTP3_ERR_H3_SETTINGS_ERROR -608 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_H3_STREAM_CREATION_ERROR` indicates that a + * remote endpoint attempts to create a new stream which is not + * allowed. + */ +#define NGHTTP3_ERR_H3_STREAM_CREATION_ERROR -609 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_FATAL` indicates that error codes less than + * this value is fatal error. When this error is returned, an + * endpoint should drop connection immediately. + */ +#define NGHTTP3_ERR_FATAL -900 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_NOMEM` indicates out of memory. + */ +#define NGHTTP3_ERR_NOMEM -901 +/** + * @macro + * + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` indicates that user defined + * callback function failed. + */ +#define NGHTTP3_ERR_CALLBACK_FAILURE -902 + +/** + * @macrosection + * + * HTTP/3 application error code + */ + +/** + * @macro + * + * :macro:`NGHTTP3_H3_NO_ERROR` is HTTP/3 application error code + * ``H3_NO_ERROR``. + */ +#define NGHTTP3_H3_NO_ERROR 0x0100 +/** + * @macro + * + * :macro:`NGHTTP3_H3_GENERAL_PROTOCOL_ERROR` is HTTP/3 application + * error code ``H3_GENERAL_PROTOCOL_ERROR``. + */ +#define NGHTTP3_H3_GENERAL_PROTOCOL_ERROR 0x0101 +/** + * @macro + * + * :macro:`NGHTTP3_H3_INTERNAL_ERROR` is HTTP/3 application error code + * ``H3_INTERNAL_ERROR``. + */ +#define NGHTTP3_H3_INTERNAL_ERROR 0x0102 +/** + * @macro + * + * :macro:`NGHTTP3_H3_STREAM_CREATION_ERROR` is HTTP/3 application + * error code ``H3_STREAM_CREATION_ERROR``. + */ +#define NGHTTP3_H3_STREAM_CREATION_ERROR 0x0103 +/** + * @macro + * + * :macro:`NGHTTP3_H3_CLOSED_CRITICAL_STREAM` is HTTP/3 application + * error code ``H3_CLOSED_CRITICAL_STREAM``. + */ +#define NGHTTP3_H3_CLOSED_CRITICAL_STREAM 0x0104 +/** + * @macro + * + * :macro:`NGHTTP3_H3_FRAME_UNEXPECTED` is HTTP/3 application error + * code ``H3_FRAME_UNEXPECTED``. + */ +#define NGHTTP3_H3_FRAME_UNEXPECTED 0x0105 +/** + * @macro + * + * :macro:`NGHTTP3_H3_FRAME_ERROR` is HTTP/3 application error code + * ``H3_FRAME_ERROR``. + */ +#define NGHTTP3_H3_FRAME_ERROR 0x0106 +/** + * @macro + * + * :macro:`NGHTTP3_H3_EXCESSIVE_LOAD` is HTTP/3 application error code + * ``H3_EXCESSIVE_LOAD``. + */ +#define NGHTTP3_H3_EXCESSIVE_LOAD 0x0107 +/** + * @macro + * + * :macro:`NGHTTP3_H3_ID_ERROR` is HTTP/3 application error code + * ``H3_ID_ERROR``. + */ +#define NGHTTP3_H3_ID_ERROR 0x0108 +/** + * @macro + * + * :macro:`NGHTTP3_H3_SETTINGS_ERROR` is HTTP/3 application error code + * ``H3_SETTINGS_ERROR``. + */ +#define NGHTTP3_H3_SETTINGS_ERROR 0x0109 +/** + * @macro + * + * :macro:`NGHTTP3_H3_MISSING_SETTINGS` is HTTP/3 application error + * code ``H3_MISSING_SETTINGS``. + */ +#define NGHTTP3_H3_MISSING_SETTINGS 0x010a +/** + * @macro + * + * :macro:`NGHTTP3_H3_REQUEST_REJECTED` is HTTP/3 application error + * code ``H3_REQUEST_REJECTED``. + */ +#define NGHTTP3_H3_REQUEST_REJECTED 0x010b +/** + * @macro + * + * :macro:`NGHTTP3_H3_REQUEST_CANCELLED` is HTTP/3 application error + * code ``H3_REQUEST_CANCELLED``. + */ +#define NGHTTP3_H3_REQUEST_CANCELLED 0x010c +/** + * @macro + * + * :macro:`NGHTTP3_H3_REQUEST_INCOMPLETE` is HTTP/3 application error + * code ``H3_REQUEST_INCOMPLETE``. + */ +#define NGHTTP3_H3_REQUEST_INCOMPLETE 0x010d +/** + * @macro + * + * :macro:`NGHTTP3_H3_MESSAGE_ERROR` is HTTP/3 application error code + * ``H3_MESSAGE_ERROR``. + */ +#define NGHTTP3_H3_MESSAGE_ERROR 0x010e +/** + * @macro + * + * :macro:`NGHTTP3_H3_CONNECT_ERROR` is HTTP/3 application error code + * ``H3_CONNECT_ERROR``. + */ +#define NGHTTP3_H3_CONNECT_ERROR 0x010f +/** + * @macro + * + * :macro:`NGHTTP3_H3_VERSION_FALLBACK` is HTTP/3 application error + * code ``H3_VERSION_FALLBACK``. + */ +#define NGHTTP3_H3_VERSION_FALLBACK 0x0110 +/** + * @macro + * + * :macro:`NGHTTP3_QPACK_DECOMPRESSION_FAILED` is HTTP/3 application + * error code ``QPACK_DECOMPRESSION_FAILED``. + */ +#define NGHTTP3_QPACK_DECOMPRESSION_FAILED 0x0200 +/** + * @macro + * + * :macro:`NGHTTP3_QPACK_ENCODER_STREAM_ERROR` is HTTP/3 application + * error code ``QPACK_ENCODER_STREAM_ERROR``. + */ +#define NGHTTP3_QPACK_ENCODER_STREAM_ERROR 0x0201 +/** + * @macro + * + * :macro:`NGHTTP3_QPACK_DECODER_STREAM_ERROR` is HTTP/3 application + * error code ``QPACK_DECODER_STREAM_ERROR``. + */ +#define NGHTTP3_QPACK_DECODER_STREAM_ERROR 0x0202 + +/** + * @functypedef + * + * :type:`nghttp3_malloc` is a custom memory allocator to replace + * :manpage:`malloc(3)`. The |user_data| is the + * :member:`nghttp3_mem.user_data`. + */ +typedef void *(*nghttp3_malloc)(size_t size, void *user_data); + +/** + * @functypedef + * + * :type:`nghttp3_free` is a custom memory allocator to replace + * :manpage:`free(3)`. The |user_data| is the + * :member:`nghttp3_mem.user_data`. + */ +typedef void (*nghttp3_free)(void *ptr, void *user_data); + +/** + * @functypedef + * + * :type:`nghttp3_calloc` is a custom memory allocator to replace + * :manpage:`calloc(3)`. The |user_data| is the + * :member:`nghttp3_mem.user_data`. + */ +typedef void *(*nghttp3_calloc)(size_t nmemb, size_t size, void *user_data); + +/** + * @functypedef + * + * :type:`nghttp3_realloc` is a custom memory allocator to replace + * :manpage:`realloc(3)`. The |user_data| is the + * :member:`nghttp3_mem.user_data`. + */ +typedef void *(*nghttp3_realloc)(void *ptr, size_t size, void *user_data); + +/** + * @struct + * + * :type:`nghttp3_mem` is a custom memory allocator functions and user + * defined pointer. The :member:`user_data` field is passed to each + * allocator function. This can be used, for example, to achieve + * per-session memory pool. + * + * In the following example code, ``my_malloc``, ``my_free``, + * ``my_calloc``, and ``my_realloc`` are the replacement of the + * standard allocators :manpage:`malloc(3)`, :manpage:`free(3)`, + * :manpage:`calloc(3)` and :manpage:`realloc(3)` respectively:: + * + * void *my_malloc_cb(size_t size, void *user_data) { + * (void)user_data; + * return my_malloc(size); + * } + * + * void my_free_cb(void *ptr, void *user_data) { + * (void)user_data; + * my_free(ptr); + * } + * + * void *my_calloc_cb(size_t nmemb, size_t size, void *user_data) { + * (void)user_data; + * return my_calloc(nmemb, size); + * } + * + * void *my_realloc_cb(void *ptr, size_t size, void *user_data) { + * (void)user_data; + * return my_realloc(ptr, size); + * } + * + * void conn_new() { + * nghttp3_mem mem = {NULL, my_malloc_cb, my_free_cb, my_calloc_cb, + * my_realloc_cb}; + * + * ... + * } + */ +typedef struct nghttp3_mem { + /** + * :member:`user_data` is an arbitrary user supplied data. This is + * passed to each allocator function. + */ + void *user_data; + /** + * :member:`malloc` is a custom allocator function to replace + * :manpage:`malloc(3)`. + */ + nghttp3_malloc malloc; + /** + * :member:`free` is a custom allocator function to replace + * :manpage:`free(3)`. + */ + nghttp3_free free; + /** + * :member:`calloc` is a custom allocator function to replace + * :manpage:`calloc(3)`. + */ + nghttp3_calloc calloc; + /** + * :member:`realloc` is a custom allocator function to replace + * :manpage:`realloc(3)`. + */ + nghttp3_realloc realloc; +} nghttp3_mem; + +/** + * @function + * + * `nghttp3_mem_default` returns the default memory allocator which + * uses malloc/calloc/realloc/free. + */ +NGHTTP3_EXTERN const nghttp3_mem *nghttp3_mem_default(void); + +/** + * @struct + * + * :type:`nghttp3_vec` is ``struct iovec`` compatible structure to + * reference arbitrary array of bytes. + */ +typedef struct nghttp3_vec { + /** + * :member:`base` points to the data. + */ + uint8_t *base; + /** + * :member:`len` is the number of bytes which the buffer pointed by + * :member:`base` contains. + */ + size_t len; +} nghttp3_vec; + +/** + * @struct + * + * :type:`nghttp3_rcbuf` is the object representing reference counted + * buffer. The details of this structure are intentionally hidden + * from the public API. + */ +typedef struct nghttp3_rcbuf nghttp3_rcbuf; + +/** + * @function + * + * `nghttp3_rcbuf_incref` increments the reference count of |rcbuf| by + * 1. + */ +NGHTTP3_EXTERN void nghttp3_rcbuf_incref(nghttp3_rcbuf *rcbuf); + +/** + * @function + * + * `nghttp3_rcbuf_decref` decrements the reference count of |rcbuf| by + * 1. If the reference count becomes zero, the object pointed by + * |rcbuf| will be freed. In this case, application must not use + * |rcbuf| again. + */ +NGHTTP3_EXTERN void nghttp3_rcbuf_decref(nghttp3_rcbuf *rcbuf); + +/** + * @function + * + * `nghttp3_rcbuf_get_buf` returns the underlying buffer managed by + * |rcbuf|. + */ +NGHTTP3_EXTERN nghttp3_vec nghttp3_rcbuf_get_buf(const nghttp3_rcbuf *rcbuf); + +/** + * @function + * + * `nghttp3_rcbuf_is_static` returns nonzero if the underlying buffer + * is statically allocated, and 0 otherwise. This can be useful for + * language bindings that wish to avoid creating duplicate strings for + * these buffers. + */ +NGHTTP3_EXTERN int nghttp3_rcbuf_is_static(const nghttp3_rcbuf *rcbuf); + +/** + * @struct + * + * :type:`nghttp3_buf` is the variable size buffer. + */ +typedef struct nghttp3_buf { + /** + * :member:`begin` points to the beginning of the buffer. + */ + uint8_t *begin; + /** + * :member:`end` points to the one beyond of the last byte of the + * buffer + */ + uint8_t *end; + /** + * :member:`pos` points to the start of data. Typically, this + * points to the address that next data should be read. Initially, + * it points to :member:`begin`. + */ + uint8_t *pos; + /** + * :member:`last` points to the one beyond of the last data of the + * buffer. Typically, new data is written at this point. + * Initially, it points to :member:`begin`. + */ + uint8_t *last; +} nghttp3_buf; + +/** + * @function + * + * `nghttp3_buf_init` initializes empty |buf|. + */ +NGHTTP3_EXTERN void nghttp3_buf_init(nghttp3_buf *buf); + +/** + * @function + * + * `nghttp3_buf_free` frees resources allocated for |buf| using |mem| + * as memory allocator. :member:`buf->begin <nghttp3_buf.begin>` must + * be a heap buffer allocated by |mem|. + */ +NGHTTP3_EXTERN void nghttp3_buf_free(nghttp3_buf *buf, const nghttp3_mem *mem); + +/** + * @function + * + * `nghttp3_buf_left` returns the number of additional bytes which can + * be written to the underlying buffer. In other words, it returns + * :member:`buf->end <nghttp3_buf.end>` - :member:`buf->last + * <nghttp3_buf.last>`. + */ +NGHTTP3_EXTERN size_t nghttp3_buf_left(const nghttp3_buf *buf); + +/** + * @function + * + * `nghttp3_buf_len` returns the number of bytes left to read. In + * other words, it returns :member:`buf->last <nghttp3_buf.last>` - + * :member:`buf->pos <nghttp3_buf.pos>`. + */ +NGHTTP3_EXTERN size_t nghttp3_buf_len(const nghttp3_buf *buf); + +/** + * @function + * + * `nghttp3_buf_reset` sets :member:`buf->pos <nghttp3_buf.pos>` and + * :member:`buf->last <nghttp3_buf.last>` to :member:`buf->begin + * <nghttp3_buf.begin>`. + */ +NGHTTP3_EXTERN void nghttp3_buf_reset(nghttp3_buf *buf); + +/** + * @macrosection + * + * Flags for HTTP field name/value pair + */ + +/** + * @macro + * + * :macro:`NGHTTP3_NV_FLAG_NONE` indicates no flag set. + */ +#define NGHTTP3_NV_FLAG_NONE 0x00u + +/** + * @macro + * + * :macro:`NGHTTP3_NV_FLAG_NEVER_INDEX` indicates that this name/value + * pair must not be indexed. Other implementation calls this bit as + * "sensitive". + */ +#define NGHTTP3_NV_FLAG_NEVER_INDEX 0x01u + +/** + * @macro + * + * :macro:`NGHTTP3_NV_FLAG_NO_COPY_NAME` is set solely by application. + * If this flag is set, the library does not make a copy of field + * name. This could improve performance. + */ +#define NGHTTP3_NV_FLAG_NO_COPY_NAME 0x02u + +/** + * @macro + * + * :macro:`NGHTTP3_NV_FLAG_NO_COPY_VALUE` is set solely by + * application. If this flag is set, the library does not make a copy + * of field value. This could improve performance. + */ +#define NGHTTP3_NV_FLAG_NO_COPY_VALUE 0x04u + +/** + * @macro + * + * :macro:`NGHTTP3_NV_FLAG_TRY_INDEX` gives a hint to QPACK encoder to + * index an HTTP field which is not indexed by default. This is just + * a hint, and QPACK encoder might not encode the field in various + * reasons. + */ +#define NGHTTP3_NV_FLAG_TRY_INDEX 0x08u + +/** + * @struct + * + * :type:`nghttp3_nv` is the name/value pair, which mainly used to + * represent HTTP fields. + */ +typedef struct nghttp3_nv { + /** + * :member:`name` is the HTTP field name. + */ + const uint8_t *name; + /** + * :member:`value` is the HTTP field value. + */ + const uint8_t *value; + /** + * :member:`namelen` is the length of the |name|, excluding + * terminating NULL. + */ + size_t namelen; + /** + * :member:`valuelen` is the length of the |value|, excluding + * terminating NULL. + */ + size_t valuelen; + /** + * :member:`flags` is bitwise OR of one or more of + * :macro:`NGHTTP3_NV_FLAG_* <NGHTTP3_NV_FLAG_NONE>`. + */ + uint8_t flags; +} nghttp3_nv; + +/* Generated by mkstatichdtbl.py */ +/** + * @enum + * + * :type:`nghttp3_qpack_token` defines HTTP field name tokens to + * identify field name quickly. It appears in + * :member:`nghttp3_qpack_nv.token`. + */ +typedef enum nghttp3_qpack_token { + /** + * :enum:`NGHTTP3_QPACK_TOKEN__AUTHORITY` is a token for + * ``:authority``. + */ + NGHTTP3_QPACK_TOKEN__AUTHORITY = 0, + /** + * :enum:`NGHTTP3_QPACK_TOKEN__PATH` is a token for ``:path``. + */ + NGHTTP3_QPACK_TOKEN__PATH = 8, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_AGE` is a token for ``age``. + */ + NGHTTP3_QPACK_TOKEN_AGE = 43, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_CONTENT_DISPOSITION` is a token for + * ``content-disposition``. + */ + NGHTTP3_QPACK_TOKEN_CONTENT_DISPOSITION = 52, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_CONTENT_LENGTH` is a token for + * ``content-length``. + */ + NGHTTP3_QPACK_TOKEN_CONTENT_LENGTH = 55, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_COOKIE` is a token for ``cookie``. + */ + NGHTTP3_QPACK_TOKEN_COOKIE = 68, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_DATE` is a token for ``date``. + */ + NGHTTP3_QPACK_TOKEN_DATE = 69, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ETAG` is a token for ``etag``. + */ + NGHTTP3_QPACK_TOKEN_ETAG = 71, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_IF_MODIFIED_SINCE` is a token for + * ``if-modified-since``. + */ + NGHTTP3_QPACK_TOKEN_IF_MODIFIED_SINCE = 74, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_IF_NONE_MATCH` is a token for + * ``if-none-match``. + */ + NGHTTP3_QPACK_TOKEN_IF_NONE_MATCH = 75, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_LAST_MODIFIED` is a token for + * ``last-modified``. + */ + NGHTTP3_QPACK_TOKEN_LAST_MODIFIED = 77, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_LINK` is a token for ``link``. + */ + NGHTTP3_QPACK_TOKEN_LINK = 78, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_LOCATION` is a token for ``location``. + */ + NGHTTP3_QPACK_TOKEN_LOCATION = 79, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_REFERER` is a token for ``referer``. + */ + NGHTTP3_QPACK_TOKEN_REFERER = 83, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_SET_COOKIE` is a token for + * ``set-cookie``. + */ + NGHTTP3_QPACK_TOKEN_SET_COOKIE = 85, + /** + * :enum:`NGHTTP3_QPACK_TOKEN__METHOD` is a token for ``:method``. + */ + NGHTTP3_QPACK_TOKEN__METHOD = 1, + /** + * :enum:`NGHTTP3_QPACK_TOKEN__SCHEME` is a token for ``:scheme``. + */ + NGHTTP3_QPACK_TOKEN__SCHEME = 9, + /** + * :enum:`NGHTTP3_QPACK_TOKEN__STATUS` is a token for ``:status``. + */ + NGHTTP3_QPACK_TOKEN__STATUS = 11, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ACCEPT` is a token for ``accept``. + */ + NGHTTP3_QPACK_TOKEN_ACCEPT = 25, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ACCEPT_ENCODING` is a token for + * ``accept-encoding``. + */ + NGHTTP3_QPACK_TOKEN_ACCEPT_ENCODING = 27, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ACCEPT_RANGES` is a token for + * ``accept-ranges``. + */ + NGHTTP3_QPACK_TOKEN_ACCEPT_RANGES = 29, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_HEADERS` is a + * token for ``access-control-allow-headers``. + */ + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_HEADERS = 32, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_ORIGIN` is a + * token for ``access-control-allow-origin``. + */ + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_ORIGIN = 38, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_CACHE_CONTROL` is a token for + * ``cache-control``. + */ + NGHTTP3_QPACK_TOKEN_CACHE_CONTROL = 46, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_CONTENT_ENCODING` is a token for + * ``content-encoding``. + */ + NGHTTP3_QPACK_TOKEN_CONTENT_ENCODING = 53, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_CONTENT_TYPE` is a token for + * ``content-type``. + */ + NGHTTP3_QPACK_TOKEN_CONTENT_TYPE = 57, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_RANGE` is a token for ``range``. + */ + NGHTTP3_QPACK_TOKEN_RANGE = 82, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_STRICT_TRANSPORT_SECURITY` is a token + * for ``strict-transport-security``. + */ + NGHTTP3_QPACK_TOKEN_STRICT_TRANSPORT_SECURITY = 86, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_VARY` is a token for ``vary``. + */ + NGHTTP3_QPACK_TOKEN_VARY = 92, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_X_CONTENT_TYPE_OPTIONS` is a token for + * ``x-content-type-options``. + */ + NGHTTP3_QPACK_TOKEN_X_CONTENT_TYPE_OPTIONS = 94, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_X_XSS_PROTECTION` is a token for + * ``x-xss-protection``. + */ + NGHTTP3_QPACK_TOKEN_X_XSS_PROTECTION = 98, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ACCEPT_LANGUAGE` is a token for + * ``accept-language``. + */ + NGHTTP3_QPACK_TOKEN_ACCEPT_LANGUAGE = 28, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_CREDENTIALS` is a + * token for ``access-control-allow-credentials``. + */ + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_CREDENTIALS = 30, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_METHODS` is a + * token for ``access-control-allow-methods``. + */ + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_METHODS = 35, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_EXPOSE_HEADERS` is a + * token for ``access-control-expose-headers``. + */ + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_EXPOSE_HEADERS = 39, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_REQUEST_HEADERS` is a + * token for ``access-control-request-headers``. + */ + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_REQUEST_HEADERS = 40, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_REQUEST_METHOD` is a + * token for ``access-control-request-method``. + */ + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_REQUEST_METHOD = 41, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ALT_SVC` is a token for ``alt-svc``. + */ + NGHTTP3_QPACK_TOKEN_ALT_SVC = 44, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_AUTHORIZATION` is a token for + * ``authorization``. + */ + NGHTTP3_QPACK_TOKEN_AUTHORIZATION = 45, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_CONTENT_SECURITY_POLICY` is a token + * for ``content-security-policy``. + */ + NGHTTP3_QPACK_TOKEN_CONTENT_SECURITY_POLICY = 56, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_EARLY_DATA` is a token for + * ``early-data``. + */ + NGHTTP3_QPACK_TOKEN_EARLY_DATA = 70, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_EXPECT_CT` is a token for + * ``expect-ct``. + */ + NGHTTP3_QPACK_TOKEN_EXPECT_CT = 72, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_FORWARDED` is a token for + * ``forwarded``. + */ + NGHTTP3_QPACK_TOKEN_FORWARDED = 73, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_IF_RANGE` is a token for ``if-range``. + */ + NGHTTP3_QPACK_TOKEN_IF_RANGE = 76, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_ORIGIN` is a token for ``origin``. + */ + NGHTTP3_QPACK_TOKEN_ORIGIN = 80, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_PURPOSE` is a token for ``purpose``. + */ + NGHTTP3_QPACK_TOKEN_PURPOSE = 81, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_SERVER` is a token for ``server``. + */ + NGHTTP3_QPACK_TOKEN_SERVER = 84, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_TIMING_ALLOW_ORIGIN` is a token for + * ``timing-allow-origin``. + */ + NGHTTP3_QPACK_TOKEN_TIMING_ALLOW_ORIGIN = 89, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_UPGRADE_INSECURE_REQUESTS` is a token + * for ``upgrade-insecure-requests``. + */ + NGHTTP3_QPACK_TOKEN_UPGRADE_INSECURE_REQUESTS = 90, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_USER_AGENT` is a token for + * ``user-agent``. + */ + NGHTTP3_QPACK_TOKEN_USER_AGENT = 91, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_X_FORWARDED_FOR` is a token for + * ``x-forwarded-for``. + */ + NGHTTP3_QPACK_TOKEN_X_FORWARDED_FOR = 95, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_X_FRAME_OPTIONS` is a token for + * ``x-frame-options``. + */ + NGHTTP3_QPACK_TOKEN_X_FRAME_OPTIONS = 96, + + /* Additional HTTP fields for HTTP messaging validation */ + + /** + * :enum:`NGHTTP3_QPACK_TOKEN_HOST` is a token for ``host``. + */ + NGHTTP3_QPACK_TOKEN_HOST = 1000, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_CONNECTION` is a token for + * ``connection``. + */ + NGHTTP3_QPACK_TOKEN_CONNECTION, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_KEEP_ALIVE` is a token for + * ``keep-alive``. + */ + NGHTTP3_QPACK_TOKEN_KEEP_ALIVE, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_PROXY_CONNECTION` is a token for + * ``proxy-connection``. + */ + NGHTTP3_QPACK_TOKEN_PROXY_CONNECTION, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_TRANSFER_ENCODING` is a token for + * ``transfer-encoding``. + */ + NGHTTP3_QPACK_TOKEN_TRANSFER_ENCODING, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_UPGRADE` is a token for ``upgrade``. + */ + NGHTTP3_QPACK_TOKEN_UPGRADE, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_TE` is a token for ``te``. + */ + NGHTTP3_QPACK_TOKEN_TE, + /** + * :enum:`NGHTTP3_QPACK_TOKEN__PROTOCOL` is a token for + * ``:protocol``. + */ + NGHTTP3_QPACK_TOKEN__PROTOCOL, + /** + * :enum:`NGHTTP3_QPACK_TOKEN_PRIORITY` is a token for ``priority``. + */ + NGHTTP3_QPACK_TOKEN_PRIORITY +} nghttp3_qpack_token; + +/** + * @struct + * + * :type:`nghttp3_qpack_nv` represents HTTP field name/value pair just + * like :type:`nghttp3_nv`. It is an extended version of + * :type:`nghttp3_nv`, and has reference counted buffers and tokens. + */ +typedef struct nghttp3_qpack_nv { + /** + * :member:`name` is the buffer containing HTTP field name. + * NULL-termination is guaranteed. + */ + nghttp3_rcbuf *name; + /** + * :member:`value` is the buffer containing HTTP field value. + * NULL-termination is guaranteed. + */ + nghttp3_rcbuf *value; + /** + * :member:`token` is :type:`nghttp3_qpack_token` value of + * :member:`name`. It could be -1 if we have no token for that HTTP + * field name. + */ + int32_t token; + /** + * :member:`flags` is a bitwise OR of one or more of + * :macro:`NGHTTP3_NV_FLAG_* <NGHTTP3_NV_FLAG_NONE>`. + */ + uint8_t flags; +} nghttp3_qpack_nv; + +/** + * @struct + * + * :type:`nghttp3_qpack_encoder` is QPACK encoder. The details of + * this structure are intentionally hidden from the public API. + */ +typedef struct nghttp3_qpack_encoder nghttp3_qpack_encoder; + +/** + * @function + * + * `nghttp3_qpack_encoder_new` initializes QPACK encoder. |pencoder| + * must be non-NULL pointer. |hard_max_dtable_capacity| is the upper + * bound of the dynamic table capacity. |mem| is a memory allocator. + * This function allocates memory for :type:`nghttp3_qpack_encoder` + * itself, and assigns its pointer to |*pencoder| if it succeeds. + * + * The maximum dynamic table capacity is still 0. In order to change + * the maximum dynamic table capacity, call + * `nghttp3_qpack_encoder_set_max_dtable_capacity`. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_qpack_encoder_new(nghttp3_qpack_encoder **pencoder, + size_t hard_max_dtable_capacity, + const nghttp3_mem *mem); + +/** + * @function + * + * `nghttp3_qpack_encoder_del` frees memory allocated for |encoder|. + * This function also frees memory pointed by |encoder| itself. This + * function does nothing if |encoder| is NULL. + */ +NGHTTP3_EXTERN void nghttp3_qpack_encoder_del(nghttp3_qpack_encoder *encoder); + +/** + * @function + * + * `nghttp3_qpack_encoder_encode` encodes the list of HTTP fields + * |nva|. |nvlen| is the length of |nva|. |stream_id| is the + * identifier of the stream which these HTTP fields belong to. This + * function writes field section prefix, encoded HTTP field section, + * and encoder stream to |pbuf|, |rbuf|, and |ebuf| respectively. + * Each :member:`nghttp3_buf.last` will be adjusted when data is + * written. An application should write |pbuf| and |rbuf| to the + * request stream in this order. + * + * The buffer pointed by |pbuf|, |rbuf|, and |ebuf| can be empty + * buffer. It is fine to pass a buffer initialized by + * `nghttp3_buf_init(buf) <nghttp3_buf_init>`. This function + * allocates memory for these buffers as necessary. In particular, it + * frees and expands buffer if the current capacity of buffer is not + * enough. If :member:`nghttp3_buf.begin` of any buffer is not NULL, + * it must be allocated by the same memory allocator passed to + * `nghttp3_qpack_encoder_new`. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory + * :macro:`NGHTTP3_ERR_QPACK_FATAL` + * |encoder| is in unrecoverable error state, and cannot be used + * anymore. + */ +NGHTTP3_EXTERN int nghttp3_qpack_encoder_encode( + nghttp3_qpack_encoder *encoder, nghttp3_buf *pbuf, nghttp3_buf *rbuf, + nghttp3_buf *ebuf, int64_t stream_id, const nghttp3_nv *nva, size_t nvlen); + +/** + * @function + * + * `nghttp3_qpack_encoder_read_decoder` reads decoder stream. The + * buffer pointed by |src| of length |srclen| contains decoder stream. + * + * This function returns the number of bytes read, or one of the + * following negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory + * :macro:`NGHTTP3_ERR_QPACK_FATAL` + * |encoder| is in unrecoverable error state, and cannot be used + * anymore. + * :macro:`NGHTTP3_ERR_QPACK_DECODER_STREAM` + * |encoder| is unable to process input because it is malformed. + */ +NGHTTP3_EXTERN nghttp3_ssize nghttp3_qpack_encoder_read_decoder( + nghttp3_qpack_encoder *encoder, const uint8_t *src, size_t srclen); + +/** + * @function + * + * `nghttp3_qpack_encoder_set_max_dtable_capacity` sets max dynamic + * table capacity to |max_dtable_capacity|. If |max_dtable_capacity| + * is larger than ``hard_max_dtable_capacity`` parameter of + * `nghttp3_qpack_encoder_new`, it is truncated to the latter. + */ +NGHTTP3_EXTERN void +nghttp3_qpack_encoder_set_max_dtable_capacity(nghttp3_qpack_encoder *encoder, + size_t max_dtable_capacity); + +/** + * @function + * + * `nghttp3_qpack_encoder_set_max_blocked_streams` sets the number of + * streams which can be blocked to |max_blocked_streams|. + */ +NGHTTP3_EXTERN void +nghttp3_qpack_encoder_set_max_blocked_streams(nghttp3_qpack_encoder *encoder, + size_t max_blocked_streams); + +/** + * @function + * + * `nghttp3_qpack_encoder_ack_everything` tells |encoder| that all + * encoded HTTP field sections are acknowledged. This function is + * provided for debugging purpose only. In HTTP/3, |encoder| knows + * this by reading decoder stream with + * `nghttp3_qpack_encoder_read_decoder`. + */ +NGHTTP3_EXTERN void +nghttp3_qpack_encoder_ack_everything(nghttp3_qpack_encoder *encoder); + +/** + * @function + * + * `nghttp3_qpack_encoder_get_num_blocked_streams` returns the number + * of streams which are potentially blocked at decoder side. + */ +NGHTTP3_EXTERN size_t +nghttp3_qpack_encoder_get_num_blocked_streams(nghttp3_qpack_encoder *encoder); + +/** + * @struct + * + * :type:`nghttp3_qpack_stream_context` is a decoder context for an + * individual stream. Its state is per HTTP field section. In order + * to reuse this object for another HTTP field section, call + * `nghttp3_qpack_stream_context_reset`. The details of this + * structure are intentionally hidden from the public API. + */ +typedef struct nghttp3_qpack_stream_context nghttp3_qpack_stream_context; + +/** + * @function + * + * `nghttp3_qpack_stream_context_new` initializes stream context. + * |psctx| must be non-NULL pointer. |stream_id| is stream ID. |mem| + * is a memory allocator. This function allocates memory for + * :type:`nghttp3_qpack_stream_context` itself, and assigns its + * pointer to |*psctx| if it succeeds. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int +nghttp3_qpack_stream_context_new(nghttp3_qpack_stream_context **psctx, + int64_t stream_id, const nghttp3_mem *mem); + +/** + * @function + * + * `nghttp3_qpack_stream_context_del` frees memory allocated for + * |sctx|. This function frees memory pointed by |sctx| itself. This + * function does nothing if |sctx| is NULL. + */ +NGHTTP3_EXTERN void +nghttp3_qpack_stream_context_del(nghttp3_qpack_stream_context *sctx); + +/** + * @function + * + * `nghttp3_qpack_stream_context_get_ricnt` returns required insert + * count. + */ +NGHTTP3_EXTERN uint64_t +nghttp3_qpack_stream_context_get_ricnt(nghttp3_qpack_stream_context *sctx); + +/** + * @function + * + * `nghttp3_qpack_stream_context_reset` resets the state of |sctx|. + * Then it can be reused for decoding an another HTTP field section in + * the same stream. + */ +NGHTTP3_EXTERN +void nghttp3_qpack_stream_context_reset(nghttp3_qpack_stream_context *sctx); + +/** + * @struct + * + * :type:`nghttp3_qpack_decoder` is QPACK decoder. The details of + * this structure are intentionally hidden from the public API. + */ +typedef struct nghttp3_qpack_decoder nghttp3_qpack_decoder; + +/** + * @function + * + * `nghttp3_qpack_decoder_new` initializes QPACK decoder. |pdecoder| + * must be non-NULL pointer. |hard_max_dtable_capacity| is the upper + * bound of the dynamic table capacity. |max_blocked_streams| is the + * maximum number of streams which can be blocked. |mem| is a memory + * allocator. This function allocates memory for + * :type:`nghttp3_qpack_decoder` itself, and assigns its pointer to + * |*pdecoder| if it succeeds. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_qpack_decoder_new(nghttp3_qpack_decoder **pdecoder, + size_t hard_max_dtable_capacity, + size_t max_blocked_streams, + const nghttp3_mem *mem); + +/** + * @function + * + * `nghttp3_qpack_decoder_del` frees memory allocated for |decoder|. + * This function frees memory pointed by |decoder| itself. This + * function does nothing if |decoder| is NULL. + */ +NGHTTP3_EXTERN void nghttp3_qpack_decoder_del(nghttp3_qpack_decoder *decoder); + +/** + * @function + * + * `nghttp3_qpack_decoder_read_encoder` reads encoder stream. The + * buffer pointed by |src| of length |srclen| contains encoder stream. + * + * This function returns the number of bytes read, or one of the + * following negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + * :macro:`NGHTTP3_ERR_QPACK_FATAL` + * |decoder| is in unrecoverable error state, and cannot be used + * anymore. + * :macro:`NGHTTP3_ERR_QPACK_ENCODER_STREAM` + * Could not interpret encoder stream instruction. + */ +NGHTTP3_EXTERN nghttp3_ssize nghttp3_qpack_decoder_read_encoder( + nghttp3_qpack_decoder *decoder, const uint8_t *src, size_t srclen); + +/** + * @function + * + * `nghttp3_qpack_decoder_get_icnt` returns insert count. + */ +NGHTTP3_EXTERN uint64_t +nghttp3_qpack_decoder_get_icnt(const nghttp3_qpack_decoder *decoder); + +/** + * @macrosection + * + * Flags for QPACK decoder + */ + +/** + * @macro + * + * :macro:`NGHTTP3_QPACK_DECODE_FLAG_NONE` indicates that no flag set. + */ +#define NGHTTP3_QPACK_DECODE_FLAG_NONE 0x00u + +/** + * @macro + * + * :macro:`NGHTTP3_QPACK_DECODE_FLAG_EMIT` indicates that an HTTP + * field is successfully decoded. + */ +#define NGHTTP3_QPACK_DECODE_FLAG_EMIT 0x01u + +/** + * @macro + * + * :macro:`NGHTTP3_QPACK_DECODE_FLAG_FINAL` indicates that an entire + * HTTP field section has been decoded. + */ +#define NGHTTP3_QPACK_DECODE_FLAG_FINAL 0x02u + +/** + * @macro + * + * :macro:`NGHTTP3_QPACK_DECODE_FLAG_BLOCKED` indicates that decoding + * has been blocked. + */ +#define NGHTTP3_QPACK_DECODE_FLAG_BLOCKED 0x04u + +/** + * @function + * + * `nghttp3_qpack_decoder_read_request` reads request stream. The + * request stream is given as the buffer pointed by |src| of length + * |srclen|. |sctx| is the stream context, and it must be created by + * `nghttp3_qpack_stream_context_new`. |*pflags| must be non-NULL + * pointer. |nv| must be non-NULL pointer. + * + * If this function succeeds, it assigns flags to |*pflags|. If + * |*pflags| has :macro:`NGHTTP3_QPACK_DECODE_FLAG_EMIT` set, a + * decoded HTTP field is assigned to |nv|. If |*pflags| has + * :macro:`NGHTTP3_QPACK_DECODE_FLAG_FINAL` set, an entire HTTP field + * section has been successfully decoded. If |*pflags| has + * :macro:`NGHTTP3_QPACK_DECODE_FLAG_BLOCKED` set, decoding is blocked + * due to required insert count. + * + * When an HTTP field is decoded, an application receives it in |nv|. + * :member:`nv->name <nghttp3_qpack_nv.name>` and :member:`nv->value + * <nghttp3_qpack_nv.value>` are reference counted buffer, and their + * reference counts are already incremented for application use. + * Therefore, when application finishes processing |nv|, it must call + * `nghttp3_rcbuf_decref(nv->name) <nghttp3_rcbuf_decref>` and + * `nghttp3_rcbuf_decref(nv->value) <nghttp3_rcbuf_decref>`, or memory + * leak might occur. These :type:`nghttp3_rcbuf` objects hold the + * pointer to :type:`nghttp3_mem` that is passed to + * `nghttp3_qpack_decoder_new` (or either `nghttp3_conn_client_new` or + * `nghttp3_conn_server_new` if it is used indirectly). As long as + * these objects are alive, the pointed :type:`nghttp3_mem` object + * must be available. Otherwise, `nghttp3_rcbuf_decref` will cause + * undefined behavior. + * + * This function returns the number of bytes read, or one of the + * following negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + * :macro:`NGHTTP3_ERR_QPACK_FATAL` + * |decoder| is in unrecoverable error state, and cannot be used + * anymore. + * :macro:`NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED` + * Could not interpret field line representations. + * :macro:`NGHTTP3_ERR_QPACK_HEADER_TOO_LARGE` + * HTTP field is too large. + */ +NGHTTP3_EXTERN nghttp3_ssize nghttp3_qpack_decoder_read_request( + nghttp3_qpack_decoder *decoder, nghttp3_qpack_stream_context *sctx, + nghttp3_qpack_nv *nv, uint8_t *pflags, const uint8_t *src, size_t srclen, + int fin); + +/** + * @function + * + * `nghttp3_qpack_decoder_write_decoder` writes decoder stream into + * |dbuf|. + * + * The caller must ensure that `nghttp3_buf_left(dbuf) + * <nghttp3_buf_left>` >= + * `nghttp3_qpack_decoder_get_decoder_streamlen(decoder) + * <nghttp3_qpack_decoder_get_decoder_streamlen>`. + */ +NGHTTP3_EXTERN void +nghttp3_qpack_decoder_write_decoder(nghttp3_qpack_decoder *decoder, + nghttp3_buf *dbuf); + +/** + * @function + * + * `nghttp3_qpack_decoder_get_decoder_streamlen` returns the length of + * decoder stream that is currently pending. + */ +NGHTTP3_EXTERN size_t +nghttp3_qpack_decoder_get_decoder_streamlen(nghttp3_qpack_decoder *decoder); + +/** + * @function + * + * `nghttp3_qpack_decoder_cancel_stream` cancels HTTP field section + * decoding for stream denoted by |stream_id|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + * :macro:`NGHTTP3_ERR_QPACK_FATAL` + * Decoder stream overflow. + */ +NGHTTP3_EXTERN int +nghttp3_qpack_decoder_cancel_stream(nghttp3_qpack_decoder *decoder, + int64_t stream_id); + +/** + * @function + * + * `nghttp3_qpack_decoder_set_max_dtable_capacity` sets + * |max_dtable_capacity| as maximum dynamic table size. + * |max_dtable_capacity| must be equal to, or smaller than + * ``hard_max_dtable_capacity`` parameter of + * `nghttp3_qpack_decoder_new`. Normally, the maximum capacity is + * communicated in encoder stream. This function is provided for + * debugging and testing purpose. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_INVALID_ARGUMENT` + * |max_dtable_capacity| exceeds the upper bound of the dynamic + * table capacity. + */ +NGHTTP3_EXTERN int +nghttp3_qpack_decoder_set_max_dtable_capacity(nghttp3_qpack_decoder *decoder, + size_t max_dtable_capacity); + +/** + * @function + * + * `nghttp3_qpack_decoder_set_max_concurrent_streams` tells |decoder| + * the maximum number of concurrent streams that a remote endpoint can + * open, including both bidirectional and unidirectional streams which + * potentially receive QPACK encoded HEADERS frame. This value is + * used as a hint to limit the length of decoder stream. + */ +NGHTTP3_EXTERN void +nghttp3_qpack_decoder_set_max_concurrent_streams(nghttp3_qpack_decoder *decoder, + size_t max_concurrent_streams); + +/** + * @function + * + * `nghttp3_strerror` returns textual representation of |liberr|. + */ +NGHTTP3_EXTERN const char *nghttp3_strerror(int liberr); + +/** + * @function + * + * `nghttp3_err_infer_quic_app_error_code` returns a QUIC application + * error code which corresponds to |liberr|. + */ +NGHTTP3_EXTERN uint64_t nghttp3_err_infer_quic_app_error_code(int liberr); + +/** + * @functypedef + * + * :type:`nghttp3_debug_vprintf_callback` is a callback function + * invoked when the library outputs debug logging. The function is + * called with arguments suitable for :manpage:`vfprintf(3)`. + * + * The debug output is only enabled if the library is built with + * :macro:`DEBUGBUILD` macro defined. + */ +typedef void (*nghttp3_debug_vprintf_callback)(const char *format, + va_list args); + +/** + * @function + * + * `nghttp3_set_debug_vprintf_callback` sets a debug output callback + * called by the library when built with :macro:`DEBUGBUILD` macro + * defined. If a callback function is not set by this function, debug + * log is written into standard error output. + * + * For builds without :macro:`DEBUGBUILD` macro defined, this function + * is noop. + * + * Note that building with :macro:`DEBUGBUILD` may cause significant + * performance penalty to libnghttp3 because of extra processing. It + * should be used for debugging purpose only. + * + * .. Warning:: + * + * Building with :macro:`DEBUGBUILD` may cause significant + * performance penalty to libnghttp3 because of extra processing. + * It should be used for debugging purpose only. We write this two + * times because this is important. + */ +NGHTTP3_EXTERN void nghttp3_set_debug_vprintf_callback( + nghttp3_debug_vprintf_callback debug_vprintf_callback); + +/** + * @macrosection + * + * Shutdown related constants + */ + +/** + * @macro + * + * :macro:`NGHTTP3_SHUTDOWN_NOTICE_STREAM_ID` specifies stream ID sent + * by a server when it initiates graceful shutdown of the connection + * via `nghttp3_conn_submit_shutdown_notice`. + */ +#define NGHTTP3_SHUTDOWN_NOTICE_STREAM_ID ((1ull << 62) - 4) + +/** + * @macro + * + * :macro:`NGHTTP3_SHUTDOWN_NOTICE_PUSH_ID` specifies push ID sent by + * a client when it initiates graceful shutdown of the connection via + * `nghttp3_conn_submit_shutdown_notice`. Note that libnghttp3 does + * not implement HTTP/3 Server Push. + */ +#define NGHTTP3_SHUTDOWN_NOTICE_PUSH_ID ((1ull << 62) - 1) + +/** + * @struct + * + * :type:`nghttp3_conn` represents a single HTTP/3 connection. The + * details of this structure are intentionally hidden from the public + * API. + */ +typedef struct nghttp3_conn nghttp3_conn; + +#define NGHTTP3_SETTINGS_V1 1 +#define NGHTTP3_SETTINGS_VERSION NGHTTP3_SETTINGS_V1 + +/** + * @struct + * + * :type:`nghttp3_settings` defines HTTP/3 settings. + */ +typedef struct nghttp3_settings { + /** + * :member:`max_field_section_size` specifies the maximum header + * section (block) size. + */ + uint64_t max_field_section_size; + /** + * :member:`qpack_max_dtable_capacity` is the maximum size of QPACK + * dynamic table. + */ + size_t qpack_max_dtable_capacity; + /** + * :member:`qpack_encoder_max_dtable_capacity` is the upper bound of + * QPACK dynamic table capacity that the QPACK encoder is willing to + * use. The effective maximum dynamic table capacity is the minimum + * of this field and the value of the received + * SETTINGS_QPACK_MAX_TABLE_CAPACITY. If this field is set to 0, + * the encoder does not use the dynamic table. + * + * When :type:`nghttp3_settings` is passed to + * :member:`nghttp3_callbacks.recv_settings` callback, this field + * should be ignored. + */ + size_t qpack_encoder_max_dtable_capacity; + /** + * :member:`qpack_blocked_streams` is the maximum number of streams + * which can be blocked while they are being decoded. + */ + size_t qpack_blocked_streams; + /** + * :member:`enable_connect_protocol`, if set to nonzero, enables + * Extended CONNECT Method (see :rfc:`9220`). Client ignores this + * field. + */ + uint8_t enable_connect_protocol; + /** + * :member:`h3_datagram`, if set to nonzero, enables HTTP/3 + * Datagrams (see :rfc:`9297`). + */ + uint8_t h3_datagram; +} nghttp3_settings; + +/** + * @functypedef + * + * :type:`nghttp3_acked_stream_data` is a callback function which is + * invoked when data sent on stream denoted by |stream_id| supplied + * from application is acknowledged by remote endpoint. The number of + * bytes acknowledged is given in |datalen|. + * + * The implementation of this callback must return 0 if it succeeds. + * Returning :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` will return to the + * caller immediately. Any values other than 0 is treated as + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE`. + */ +typedef int (*nghttp3_acked_stream_data)(nghttp3_conn *conn, int64_t stream_id, + uint64_t datalen, void *conn_user_data, + void *stream_user_data); + +/** + * @functypedef + * + * :type:`nghttp3_conn_stream_close` is a callback function which is + * invoked when a stream identified by |stream_id| is closed. QUIC + * application error code |app_error_code| indicates the reason of + * this closure. + * + * The implementation of this callback must return 0 if it succeeds. + * Returning :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` will return to the + * caller immediately. Any values other than 0 is treated as + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE`. + */ +typedef int (*nghttp3_stream_close)(nghttp3_conn *conn, int64_t stream_id, + uint64_t app_error_code, + void *conn_user_data, + void *stream_user_data); + +/** + * @functypedef + * + * :type:`nghttp3_recv_data` is a callback function which is invoked + * when a part of request or response body on stream identified by + * |stream_id| is received. |data| points to the received data, and + * its length is |datalen|. + * + * The application is responsible for increasing flow control credit + * (say, increasing by |datalen| bytes). + * + * The implementation of this callback must return 0 if it succeeds. + * Returning :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` will return to the + * caller immediately. Any values other than 0 is treated as + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE`. + */ +typedef int (*nghttp3_recv_data)(nghttp3_conn *conn, int64_t stream_id, + const uint8_t *data, size_t datalen, + void *conn_user_data, void *stream_user_data); + +/** + * @functypedef + * + * :type:`nghttp3_deferred_consume` is a callback function which is + * invoked when the library consumed |consumed| bytes for a stream + * identified by |stream_id|. This callback is used to notify the + * consumed bytes for stream blocked due to synchronization between + * streams. The application is responsible for increasing flow + * control credit by |consumed| bytes. + * + * The implementation of this callback must return 0 if it succeeds. + * Returning :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` will return to the + * caller immediately. Any values other than 0 is treated as + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE`. + */ +typedef int (*nghttp3_deferred_consume)(nghttp3_conn *conn, int64_t stream_id, + size_t consumed, void *conn_user_data, + void *stream_user_data); + +/** + * @functypedef + * + * :type:`nghttp3_begin_headers` is a callback function which is + * invoked when an incoming HTTP field section is started on a stream + * denoted by |stream_id|. Each HTTP field is passed to application + * by :type:`nghttp3_recv_header` callback. And then + * :type:`nghttp3_end_headers` is called when a whole HTTP field + * section is processed. + * + * The implementation of this callback must return 0 if it succeeds. + * Returning :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` will return to the + * caller immediately. Any values other than 0 is treated as + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE`. + */ +typedef int (*nghttp3_begin_headers)(nghttp3_conn *conn, int64_t stream_id, + void *conn_user_data, + void *stream_user_data); + +/** + * @functypedef + * + * :type:`nghttp3_recv_header` is a callback function which is invoked + * when an HTTP field is received on a stream denoted by |stream_id|. + * |name| contains a field name, and |value| contains a field value. + * |token| is one of token defined in :type:`nghttp3_qpack_token` or + * -1 if no token is defined for |name|. |flags| is bitwise OR of + * zero or more of :macro:`NGHTTP3_NV_FLAG_* <NGHTTP3_NV_FLAG_NONE>`. + * + * The buffers for |name| and |value| are reference counted. If + * application needs to keep them, increment the reference count with + * `nghttp3_rcbuf_incref`. When they are no longer used, call + * `nghttp3_rcbuf_decref`. + * + * The implementation of this callback must return 0 if it succeeds. + * Returning :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` will return to the + * caller immediately. Any values other than 0 is treated as + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE`. + */ +typedef int (*nghttp3_recv_header)(nghttp3_conn *conn, int64_t stream_id, + int32_t token, nghttp3_rcbuf *name, + nghttp3_rcbuf *value, uint8_t flags, + void *conn_user_data, + void *stream_user_data); + +/** + * @functypedef + * + * :type:`nghttp3_end_headers` is a callback function which is invoked + * when an incoming HTTP field section has ended. + * + * If the stream ends with this HTTP field section, |fin| is set to + * nonzero. + * + * The implementation of this callback must return 0 if it succeeds. + * Returning :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` will return to the + * caller immediately. Any values other than 0 is treated as + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE`. + */ +typedef int (*nghttp3_end_headers)(nghttp3_conn *conn, int64_t stream_id, + int fin, void *conn_user_data, + void *stream_user_data); + +/** + * @functypedef + * + * :type:`nghttp3_end_stream` is a callback function which is invoked + * when the receiving side of stream is closed. For server, this + * callback function is invoked when HTTP request is received + * completely. For client, this callback function is invoked when + * HTTP response is received completely. + * + * The implementation of this callback must return 0 if it succeeds. + * Returning :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` will return to the + * caller immediately. Any values other than 0 is treated as + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE`. + */ +typedef int (*nghttp3_end_stream)(nghttp3_conn *conn, int64_t stream_id, + void *conn_user_data, void *stream_user_data); + +/** + * @functypedef + * + * :type:`nghttp3_stop_sending` is a callback function which is + * invoked when the library asks application to send STOP_SENDING to + * the stream identified by |stream_id|. QUIC application error code + * |app_error_code| indicates the reason for this action. + * + * The implementation of this callback must return 0 if it succeeds. + * Returning :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` will return to the + * caller immediately. Any values other than 0 is treated as + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE`. + */ +typedef int (*nghttp3_stop_sending)(nghttp3_conn *conn, int64_t stream_id, + uint64_t app_error_code, + void *conn_user_data, + void *stream_user_data); + +/** + * @functypedef + * + * :type:`nghttp3_reset_stream` is a callback function which is + * invoked when the library asks application to reset stream + * identified by |stream_id|. QUIC application error code + * |app_error_code| indicates the reason for this action. + * + * The implementation of this callback must return 0 if it succeeds. + * Returning :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` will return to the + * caller immediately. Any values other than 0 is treated as + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE`. + */ +typedef int (*nghttp3_reset_stream)(nghttp3_conn *conn, int64_t stream_id, + uint64_t app_error_code, + void *conn_user_data, + void *stream_user_data); + +/** + * @functypedef + * + * :type:`nghttp3_shutdown` is a callback function which is invoked + * when a shutdown is initiated by the remote endpoint. For client, + * |id| contains a stream ID of a client initiated stream, for server, + * it contains a push ID. All client streams with stream ID, or pushes + * with push ID equal to, or larger than |ID| are guaranteed to not be + * processed by the remote endpoint. Note that libnghttp3 does not + * implement Server Push. + * + * Parameter |id| for client can contain a special value + * :macro:`NGHTTP3_SHUTDOWN_NOTICE_STREAM_ID`, and for server it can + * contain special value + * :macro:`NGHTTP3_SHUTDOWN_NOTICE_PUSH_ID`. These values signal + * request for graceful shutdown of the connection, triggered by + * remote endpoint's invocation of + * `nghttp3_conn_submit_shutdown_notice`. + * + * It is possible that this callback is invoked multiple times on a + * single connection, however the |id| can only stay the same or + * decrease, never increase. + * + * The implementation of this callback must return 0 if it succeeds. + * Returning :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` will return to the + * caller immediately. Any values other than 0 is treated as + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE`. + */ +typedef int (*nghttp3_shutdown)(nghttp3_conn *conn, int64_t id, + void *conn_user_data); + +/** + * @functypedef + * + * :type:`nghttp3_recv_settings` is a callback function which is + * invoked when SETTINGS frame is received. |settings| is a received + * remote HTTP/3 settings. + * + * The implementation of this callback must return 0 if it succeeds. + * Returning :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` will return to the + * caller immediately. Any values other than 0 is treated as + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE`. + */ +typedef int (*nghttp3_recv_settings)(nghttp3_conn *conn, + const nghttp3_settings *settings, + void *conn_user_data); + +#define NGHTTP3_CALLBACKS_V1 1 +#define NGHTTP3_CALLBACKS_VERSION NGHTTP3_CALLBACKS_V1 + +/** + * @struct + * + * :type:`nghttp3_callbacks` holds a set of callback functions. + */ +typedef struct nghttp3_callbacks { + /** + * :member:`acked_stream_data` is a callback function which is + * invoked when data sent on a particular stream have been + * acknowledged by a remote endpoint. + */ + nghttp3_acked_stream_data acked_stream_data; + /** + * :member:`stream_close` is a callback function which is invoked + * when a particular stream has closed. + */ + nghttp3_stream_close stream_close; + /** + * :member:`recv_data` is a callback function which is invoked when + * stream data is received. + */ + nghttp3_recv_data recv_data; + /** + * :member:`deferred_consume` is a callback function which is + * invoked when the library consumed data for a particular stream + * which had been blocked for synchronization between streams. + */ + nghttp3_deferred_consume deferred_consume; + /** + * :member:`begin_headers` is a callback function which is invoked + * when an HTTP header field section has started on a particular + * stream. + */ + nghttp3_begin_headers begin_headers; + /** + * :member:`recv_header` is a callback function which is invoked + * when a single HTTP header field is received on a particular + * stream. + */ + nghttp3_recv_header recv_header; + /** + * :member:`end_headers` is a callback function which is invoked + * when an HTTP header field section has ended on a particular + * stream. + */ + nghttp3_end_headers end_headers; + /** + * :member:`begin_trailers` is a callback function which is invoked + * when an HTTP trailer field section has started on a particular + * stream. + */ + nghttp3_begin_headers begin_trailers; + /** + * :member:`recv_trailer` is a callback function which is invoked + * when a single HTTP trailer field is received on a particular + * stream. + */ + nghttp3_recv_header recv_trailer; + /** + * :member:`end_trailers` is a callback function which is invoked + * when an HTTP trailer field section has ended on a particular + * stream. + */ + nghttp3_end_headers end_trailers; + /** + * :member:`stop_sending` is a callback function which is invoked + * when the library asks application to send STOP_SENDING to a + * particular stream. + */ + nghttp3_stop_sending stop_sending; + /** + * :member:`end_stream` is a callback function which is invoked when + * a receiving side of stream has been closed. + */ + nghttp3_end_stream end_stream; + /** + * :member:`reset_stream` is a callback function which is invoked + * when the library asks application to reset stream (by sending + * RESET_STREAM). + */ + nghttp3_reset_stream reset_stream; + /** + * :member:`shutdown` is a callback function which is invoked when + * the remote endpoint has signalled initiation of connection + * shutdown. + */ + nghttp3_shutdown shutdown; + /** + * :member:`recv_settings` is a callback function which is invoked + * when SETTINGS frame is received. + */ + nghttp3_recv_settings recv_settings; +} nghttp3_callbacks; + +/** + * @function + * + * `nghttp3_settings_default` fills |settings| with the default + * values. + * + * - :member:`max_field_section_size + * <nghttp3_settings.max_field_section_size>` = :expr:`((1ull << 62) - 1)` + * - :member:`qpack_max_dtable_capacity + * <nghttp3_settings.qpack_max_dtable_capacity>` = 0 + * - :member:`qpack_encoder_max_dtable_capacity + * <nghttp3_settings.qpack_encoder_max_dtable_capacity>` = 4096 + * - :member:`qpack_blocked_streams + * <nghttp3_settings.qpack_blocked_streams>` = 0 + * - :member:`enable_connect_protocol + * <nghttp3_settings.enable_connect_protocol>` = 0 + */ +NGHTTP3_EXTERN void +nghttp3_settings_default_versioned(int settings_version, + nghttp3_settings *settings); + +/** + * @function + * + * `nghttp3_conn_client_new` creates :type:`nghttp3_conn`, and + * initializes it for client use. The pointer to the object is stored + * in |*pconn|. If |mem| is ``NULL``, the memory allocator returned + * by `nghttp3_mem_default` is used. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int +nghttp3_conn_client_new_versioned(nghttp3_conn **pconn, int callbacks_version, + const nghttp3_callbacks *callbacks, + int settings_version, + const nghttp3_settings *settings, + const nghttp3_mem *mem, void *conn_user_data); + +/** + * @function + * + * `nghttp3_conn_server_new` creates :type:`nghttp3_conn`, and + * initializes it for server use. The pointer to the object is stored + * in |*pconn|. If |mem| is ``NULL``, the memory allocator returned + * by `nghttp3_mem_default` is used. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int +nghttp3_conn_server_new_versioned(nghttp3_conn **pconn, int callbacks_version, + const nghttp3_callbacks *callbacks, + int settings_version, + const nghttp3_settings *settings, + const nghttp3_mem *mem, void *conn_user_data); + +/** + * @function + * + * `nghttp3_conn_del` frees resources allocated for |conn|. This + * function also frees memory pointed by |conn| itself. This function + * does nothing if |conn| is NULL. + */ +NGHTTP3_EXTERN void nghttp3_conn_del(nghttp3_conn *conn); + +/** + * @function + * + * `nghttp3_conn_bind_control_stream` binds stream denoted by + * |stream_id| to outgoing unidirectional control stream. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_INVALID_STATE` + * Control stream has already corresponding stream ID. + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_conn_bind_control_stream(nghttp3_conn *conn, + int64_t stream_id); + +/** + * @function + * + * `nghttp3_conn_bind_qpack_streams` binds stream denoted by + * |qenc_stream_id| to outgoing QPACK encoder stream, and stream + * denoted by |qdec_stream_id| to outgoing QPACK encoder stream. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_INVALID_STATE` + * QPACK encoder/decoder stream have already corresponding stream + * IDs. + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_conn_bind_qpack_streams(nghttp3_conn *conn, + int64_t qenc_stream_id, + int64_t qdec_stream_id); + +/** + * @function + * + * `nghttp3_conn_read_stream` reads data |src| of length |srclen| on + * stream identified by |stream_id|. It returns the number of bytes + * consumed. The "consumed" means that application can increase flow + * control credit (both stream and connection) of underlying QUIC + * connection by that amount. It does not include the amount of data + * carried by DATA frame which contains application data (excluding + * any control or QPACK unidirectional streams) . See + * :type:`nghttp3_recv_data` to handle those bytes. If |fin| is + * nonzero, this is the last data from remote endpoint in this stream. + * + * This function returns the number of bytes consumed, or one of the + * following negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` + * User callback failed. + * + * It may return the other error codes. The negative error code means + * that |conn| encountered a connection error, and the connection must + * be closed. Calling nghttp3 API other than `nghttp3_conn_del` + * causes undefined behavior. + */ +NGHTTP3_EXTERN nghttp3_ssize nghttp3_conn_read_stream(nghttp3_conn *conn, + int64_t stream_id, + const uint8_t *src, + size_t srclen, int fin); + +/** + * @function + * + * `nghttp3_conn_writev_stream` stores stream data to send to |vec| of + * length |veccnt|, and returns the number of nghttp3_vec object in + * which it stored data. It stores stream ID to |*pstream_id|. An + * application has to call `nghttp3_conn_add_write_offset` to inform + * |conn| of the actual number of bytes that underlying QUIC stack + * accepted. |*pfin| will be nonzero if this is the last data to + * send. If there is no stream to write data or send fin, this + * function returns 0, and -1 is assigned to |*pstream_id|. This + * function may return 0, and |*pstream_id| is not -1, and |*pfin| is + * nonzero. It means 0 length data to |*pstream_id|, and it is the + * last data to the stream. They must be passed to QUIC stack, and + * they are accepted, the application has to call + * `nghttp3_conn_add_write_offset` with 0 byte. + * + * This function returns the number of bytes consumed, or one of the + * following negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` + * User callback failed. + * + * It may return the other error codes. The negative error code means + * that |conn| encountered a connection error, and the connection must + * be closed. Calling nghttp3 API other than `nghttp3_conn_del` + * causes undefined behavior. + */ +NGHTTP3_EXTERN nghttp3_ssize nghttp3_conn_writev_stream(nghttp3_conn *conn, + int64_t *pstream_id, + int *pfin, + nghttp3_vec *vec, + size_t veccnt); + +/** + * @function + * + * `nghttp3_conn_add_write_offset` tells |conn| the number of bytes + * |n| for stream denoted by |stream_id| QUIC stack accepted. + * + * If stream has no data to send but just sends fin (closing the write + * side of a stream), the number of bytes sent is 0. It is important + * to call this function even if |n| is 0 in this case. It is safe to + * call this function if |n| is 0. + * + * `nghttp3_conn_writev_stream` must be called before calling this + * function to get data to send, and those data must be fed into QUIC + * stack. + * + * If a stream denoted by |stream_id| is not found, this function + * returns 0. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_conn_add_write_offset(nghttp3_conn *conn, + int64_t stream_id, size_t n); + +/** + * @function + * + * `nghttp3_conn_add_ack_offset` tells |conn| the number of bytes |n| + * for stream denoted by |stream_id| QUIC stack has acknowledged. + * + * If a stream denoted by |stream_id| is not found, this function + * returns 0. + * + * Alternatively, `nghttp3_conn_update_ack_offset` can be used to + * accomplish the same thing. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` + * User callback failed. + */ +NGHTTP3_EXTERN int nghttp3_conn_add_ack_offset(nghttp3_conn *conn, + int64_t stream_id, uint64_t n); + +/** + * @function + * + * `nghttp3_conn_update_ack_offset` tells |conn| that QUIC stack has + * acknowledged the stream data up to |offset| for a stream denoted by + * |stream_id|. + * + * If a stream denoted by |stream_id| is not found, this function + * returns 0. + * + * Alternatively, `nghttp3_conn_add_ack_offset` can be used to + * accomplish the same thing. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_INVALID_ARGUMENT` + * |offset| is less than the number of bytes acknowledged so far. + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` + * User callback failed. + */ +NGHTTP3_EXTERN int nghttp3_conn_update_ack_offset(nghttp3_conn *conn, + int64_t stream_id, + uint64_t offset); + +/** + * @function + * + * `nghttp3_conn_block_stream` tells the library that stream + * identified by |stream_id| is blocked due to QUIC flow control. + */ +NGHTTP3_EXTERN void nghttp3_conn_block_stream(nghttp3_conn *conn, + int64_t stream_id); + +/** + * @function + * + * `nghttp3_conn_unblock_stream` tells the library that stream + * identified by |stream_id| which was blocked by QUIC flow control + * (see `nghttp3_conn_block_stream`) is unblocked. + * + * If a stream denoted by |stream_id| is not found, this function + * returns 0. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_conn_unblock_stream(nghttp3_conn *conn, + int64_t stream_id); + +/** + * @function + * + * `nghttp3_conn_is_stream_writable` returns nonzero if a stream + * identified by |stream_id| is writable. It is not writable if: + * + * - the stream does not exist; or, + * - the stream is closed (e.g., `nghttp3_conn_close_stream` is + * called); or, + * - the stream is QUIC flow control blocked (e.g., + * `nghttp3_conn_block_stream` is called); or, + * - the stream is input data blocked (e.g., + * :macro:`NGHTTP3_ERR_WOULDBLOCK` is returned from + * :type:`nghttp3_read_data_callback`); or, + * - the stream is half-closed local (e.g., + * `nghttp3_conn_shutdown_stream_write` is called). + */ +NGHTTP3_EXTERN int nghttp3_conn_is_stream_writable(nghttp3_conn *conn, + int64_t stream_id); + +/** + * @function + * + * `nghttp3_conn_shutdown_stream_write` tells the library that any + * further write operation to stream identified by |stream_id| is + * prohibited. This works like `nghttp3_conn_block_stream`, but it + * cannot be unblocked by `nghttp3_conn_unblock_stream`. + */ +NGHTTP3_EXTERN void nghttp3_conn_shutdown_stream_write(nghttp3_conn *conn, + int64_t stream_id); + +/** + * @function + * + * `nghttp3_conn_shutdown_stream_read` tells the library that + * read-side of stream denoted by |stream_id| is abruptly closed, and + * any further incoming data and pending stream data should be + * discarded. + * + * If a stream denoted by |stream_id| is not client bidirectional + * stream, this function returns 0. If the stream has already + * shutdown read-side stream, this function returns 0. + * + * This function does not fail if a stream denoted by |stream_id| is + * not found, although it may fail with the other reasons. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + * :macro:`NGHTTP3_ERR_QPACK_FATAL` + * QPACK decoder stream overflow. + */ +NGHTTP3_EXTERN int nghttp3_conn_shutdown_stream_read(nghttp3_conn *conn, + int64_t stream_id); + +/** + * @function + * + * `nghttp3_conn_resume_stream` resumes stream identified by + * |stream_id| which was previously unable to provide data. See + * :type:`nghttp3_read_data_callback`. + * + * If a stream denoted by |stream_id| is not found, this function + * returns 0. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_conn_resume_stream(nghttp3_conn *conn, + int64_t stream_id); + +/** + * @function + * + * `nghttp3_conn_close_stream` tells the library that a stream + * identified by |stream_id| has been closed. QUIC application error + * code |app_error_code| is the reason of the closure. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_STREAM_NOT_FOUND` + * Stream not found. + * :macro:`NGHTTP3_ERR_H3_CLOSED_CRITICAL_STREAM` + * A critical stream is closed. + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE` + * User callback failed + */ +NGHTTP3_EXTERN int nghttp3_conn_close_stream(nghttp3_conn *conn, + int64_t stream_id, + uint64_t app_error_code); + +/** + * @macrosection + * + * Data flags + */ + +/** + * @macro + * + * :macro:`NGHTTP3_DATA_FLAG_NONE` indicates no flag set. + */ +#define NGHTTP3_DATA_FLAG_NONE 0x00u + +/** + * @macro + * + * :macro:`NGHTTP3_DATA_FLAG_EOF` indicates that all request or + * response body has been provided to the library. It also indicates + * that sending side of stream is closed unless + * :macro:`NGHTTP3_DATA_FLAG_NO_END_STREAM` is given at the same time. + */ +#define NGHTTP3_DATA_FLAG_EOF 0x01u + +/** + * @macro + * + * :macro:`NGHTTP3_DATA_FLAG_NO_END_STREAM` indicates that sending + * side of stream is not closed even if :macro:`NGHTTP3_DATA_FLAG_EOF` + * is set. Usually this flag is used to send trailer fields with + * `nghttp3_conn_submit_trailers`. If `nghttp3_conn_submit_trailers` + * has been called, regardless of this flag, the submitted trailer + * fields are sent. + */ +#define NGHTTP3_DATA_FLAG_NO_END_STREAM 0x02u + +/** + * @function + * + * `nghttp3_conn_set_max_client_streams_bidi` tells |conn| the + * cumulative number of bidirectional streams that client can open. + */ +NGHTTP3_EXTERN void +nghttp3_conn_set_max_client_streams_bidi(nghttp3_conn *conn, + uint64_t max_streams); + +/** + * @function + * + * `nghttp3_conn_set_max_concurrent_streams` tells |conn| the maximum + * number of concurrent streams that a remote endpoint can open, + * including both bidirectional and unidirectional streams which + * potentially receive QPACK encoded HEADERS frame. This value is + * used as a hint to limit the internal resource consumption. + */ +NGHTTP3_EXTERN void +nghttp3_conn_set_max_concurrent_streams(nghttp3_conn *conn, + size_t max_concurrent_streams); + +/** + * @functypedef + * + * :type:`nghttp3_read_data_callback` is a callback function invoked + * when the library asks an application to provide stream data for a + * stream denoted by |stream_id|. + * + * The library provides |vec| of length |veccnt| to the application. + * The application should fill data and its length to |vec|. It has + * to return the number of the filled objects. The application must + * retain data until they are safe to free. It is notified by + * :type:`nghttp3_acked_stream_data` callback. + * + * If this is the last data to send (or there is no data to send + * because all data have been sent already), set + * :macro:`NGHTTP3_DATA_FLAG_EOF` to |*pflags|. + * + * If the application is unable to provide data temporarily, return + * :macro:`NGHTTP3_ERR_WOULDBLOCK`. When it is ready to provide data, + * call `nghttp3_conn_resume_stream`. + * + * The callback should return the number of objects in |vec| that the + * application filled if it succeeds, or + * :macro:`NGHTTP3_ERR_CALLBACK_FAILURE`. + * + * TODO Add NGHTTP3_ERR_TEMPORAL_CALLBACK_FAILURE to reset just this + * stream. + */ +typedef nghttp3_ssize (*nghttp3_read_data_callback)( + nghttp3_conn *conn, int64_t stream_id, nghttp3_vec *vec, size_t veccnt, + uint32_t *pflags, void *conn_user_data, void *stream_user_data); + +/** + * @struct + * + * :type:`nghttp3_data_reader` specifies the way how to generate + * request or response body. + */ +typedef struct nghttp3_data_reader { + /** + * :member:`read_data` is a callback function to generate body. + */ + nghttp3_read_data_callback read_data; +} nghttp3_data_reader; + +/** + * @function + * + * `nghttp3_conn_submit_request` submits HTTP request header fields + * and body on the stream identified by |stream_id|. |stream_id| must + * be a client initiated bidirectional stream. Only client can submit + * HTTP request. |nva| of length |nvlen| specifies HTTP request + * header fields. |dr| specifies a request body. If there is no + * request body, specify NULL. If |dr| is NULL, it implies the end of + * stream. |stream_user_data| is an opaque pointer attached to the + * stream. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_INVALID_ARGUMENT` + * |stream_id| identifies unidirectional stream. + * :macro:`NGHTTP3_ERR_CONN_CLOSING` + * Connection is shutting down, and no new stream is allowed. + * :macro:`NGHTTP3_ERR_STREAM_IN_USE` + * Stream has already been opened. + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_conn_submit_request( + nghttp3_conn *conn, int64_t stream_id, const nghttp3_nv *nva, size_t nvlen, + const nghttp3_data_reader *dr, void *stream_user_data); + +/** + * @function + * + * `nghttp3_conn_submit_info` submits HTTP non-final response header + * fields on the stream identified by |stream_id|. |nva| of length + * |nvlen| specifies HTTP response header fields. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_STREAM_NOT_FOUND` + * Stream not found + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_conn_submit_info(nghttp3_conn *conn, + int64_t stream_id, + const nghttp3_nv *nva, + size_t nvlen); + +/** + * @function + * + * `nghttp3_conn_submit_response` submits HTTP response header fields + * and body on the stream identified by |stream_id|. |nva| of length + * |nvlen| specifies HTTP response header fields. |dr| specifies a + * response body. If there is no response body, specify NULL. If + * |dr| is NULL, it implies the end of stream. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_STREAM_NOT_FOUND` + * Stream not found + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_conn_submit_response(nghttp3_conn *conn, + int64_t stream_id, + const nghttp3_nv *nva, + size_t nvlen, + const nghttp3_data_reader *dr); + +/** + * @function + * + * `nghttp3_conn_submit_trailers` submits HTTP trailer fields on the + * stream identified by |stream_id|. |nva| of length |nvlen| + * specifies HTTP trailer fields. Calling this function implies the + * end of stream. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_STREAM_NOT_FOUND` + * Stream not found + * :macro:`NGHTTP3_ERR_INVALID_STATE` + * Application has already submitted fin to stream. + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_conn_submit_trailers(nghttp3_conn *conn, + int64_t stream_id, + const nghttp3_nv *nva, + size_t nvlen); + +/** + * @function + * + * `nghttp3_conn_submit_shutdown_notice` notifies the other endpoint + * to stop creating new stream. After a couple of RTTs later, call + * `nghttp3_conn_shutdown` to start graceful shutdown. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_conn_submit_shutdown_notice(nghttp3_conn *conn); + +/** + * @function + * + * `nghttp3_conn_shutdown` starts graceful shutdown. It should be + * called after `nghttp3_conn_submit_shutdown_notice` and a couple of + * RTTs. After calling this function, the local endpoint starts + * rejecting new incoming streams. The existing streams are processed + * normally. See also `nghttp3_conn_is_drained`. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_conn_shutdown(nghttp3_conn *conn); + +/** + * @function + * + * `nghttp3_conn_set_stream_user_data` sets |stream_user_data| to the + * stream identified by |stream_id|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_STREAM_NOT_FOUND` + * Stream not found. + */ +NGHTTP3_EXTERN int nghttp3_conn_set_stream_user_data(nghttp3_conn *conn, + int64_t stream_id, + void *stream_user_data); + +/** + * @function + * + * `nghttp3_conn_get_frame_payload_left` returns the number of bytes + * left to read current frame payload for a stream denoted by + * |stream_id|. If no such stream is found, or |stream_id| identifies + * neither client bidirectional stream nor remote control stream, it + * returns 0. + */ +NGHTTP3_EXTERN uint64_t nghttp3_conn_get_frame_payload_left(nghttp3_conn *conn, + int64_t stream_id); + +/** + * @macrosection + * + * HTTP stream priority flags + */ + +/** + * @macro + * + * :macro:`NGHTTP3_DEFAULT_URGENCY` is the default urgency level. + */ +#define NGHTTP3_DEFAULT_URGENCY 3 + +/** + * @macro + * + * :macro:`NGHTTP3_URGENCY_HIGH` is the highest urgency level. + */ +#define NGHTTP3_URGENCY_HIGH 0 + +/** + * @macro + * + * :macro:`NGHTTP3_URGENCY_LOW` is the lowest urgency level. + */ +#define NGHTTP3_URGENCY_LOW 7 + +/** + * @macro + * + * :macro:`NGHTTP3_URGENCY_LEVELS` is the number of urgency levels. + */ +#define NGHTTP3_URGENCY_LEVELS (NGHTTP3_URGENCY_LOW + 1) + +#define NGHTTP3_PRI_V1 1 +#define NGHTTP3_PRI_VERSION NGHTTP3_PRI_V1 + +/** + * @struct + * + * :type:`nghttp3_pri` represents HTTP priority. + */ +typedef struct NGHTTP3_ALIGN(8) nghttp3_pri { + /** + * :member:`urgency` is the urgency of a stream, it must be in + * [:macro:`NGHTTP3_URGENCY_HIGH`, :macro:`NGHTTP3_URGENCY_LOW`], + * inclusive, and 0 is the highest urgency. + */ + uint32_t urgency; + /** + * :member:`inc` indicates that a content can be processed + * incrementally or not. If it is 0, it cannot be processed + * incrementally. If it is 1, it can be processed incrementally. + * Other value is not permitted. + */ + uint8_t inc; +} nghttp3_pri; + +/** + * @function + * + * `nghttp3_conn_get_stream_priority` stores stream priority of a + * stream denoted by |stream_id| into |*dest|. |stream_id| must + * identify client initiated bidirectional stream. Only server can + * use this function. + * + * This function must not be called if |conn| is initialized as + * client. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_INVALID_ARGUMENT` + * |stream_id| is not a client initiated bidirectional stream ID. + * :macro:`NGHTTP3_ERR_STREAM_NOT_FOUND` + * Stream not found. + */ +NGHTTP3_EXTERN int nghttp3_conn_get_stream_priority_versioned( + nghttp3_conn *conn, int pri_version, nghttp3_pri *dest, int64_t stream_id); + +/** + * @function + * + * `nghttp3_conn_set_client_stream_priority` updates priority of a + * stream denoted by |stream_id| with the value pointed by |data| of + * length |datalen|, which should be a serialized :rfc:`9218` priority + * field value. |stream_id| must identify client initiated + * bidirectional stream. + * + * This function must not be called if |conn| is initialized as + * server. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_INVALID_ARGUMENT` + * |stream_id| is not a client initiated bidirectional stream ID. + * :macro:`NGHTTP3_ERR_STREAM_NOT_FOUND` + * Stream not found. + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_conn_set_client_stream_priority(nghttp3_conn *conn, + int64_t stream_id, + const uint8_t *data, + size_t datalen); + +/** + * @function + * + * `nghttp3_conn_set_server_stream_priority` updates priority of a + * stream denoted by |stream_id| with the value pointed by |pri|. + * |stream_id| must identify client initiated bidirectional stream. + * + * This function must not be called if |conn| is initialized as + * client. + * + * This function completely overrides stream priority set by client, + * and any attempts to update priority by client are ignored. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_INVALID_ARGUMENT` + * |stream_id| is not a client initiated bidirectional stream ID. + * :macro:`NGHTTP3_ERR_STREAM_NOT_FOUND` + * Stream not found. + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + */ +NGHTTP3_EXTERN int nghttp3_conn_set_server_stream_priority_versioned( + nghttp3_conn *conn, int64_t stream_id, int pri_version, + const nghttp3_pri *pri); + +/** + * @function + * + * `nghttp3_vec_len` returns the sum of length in |vec| of |cnt| + * elements. + */ +NGHTTP3_EXTERN uint64_t nghttp3_vec_len(const nghttp3_vec *vec, size_t cnt); + +/** + * @function + * + * `nghttp3_check_header_name` returns nonzero if HTTP field name + * |name| of length |len| is valid according to + * :rfc:`7230#section-3.2`. + * + * Because this is an HTTP field name in HTTP/3, the upper cased + * alphabet is treated as error. + */ +NGHTTP3_EXTERN int nghttp3_check_header_name(const uint8_t *name, size_t len); + +/** + * @function + * + * `nghttp3_check_header_value` returns nonzero if HTTP field value + * |value| of length |len| is valid according to + * :rfc:`7230#section-3.2`. + */ +NGHTTP3_EXTERN int nghttp3_check_header_value(const uint8_t *value, size_t len); + +/** + * @function + * + * `nghttp3_conn_is_drained` returns nonzero if + * `nghttp3_conn_shutdown` has been called, and there is no active + * remote streams. This function is for server use only. + */ +NGHTTP3_EXTERN int nghttp3_conn_is_drained(nghttp3_conn *conn); + +/** + * @function + * + * `nghttp3_pri_parse_priority` parses Priority header field value + * pointed by |value| of length |len|, and stores the result in the + * object pointed by |dest|. Priority header field is defined in + * :rfc:`9218`. + * + * This function does not initialize the object pointed by |dest| + * before storing the result. It only assigns the values that the + * parser correctly extracted to fields. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_INVALID_ARGUMENT` + * Failed to parse the header field value. + */ +NGHTTP3_EXTERN int nghttp3_pri_parse_priority_versioned(int pri_version, + nghttp3_pri *dest, + const uint8_t *value, + size_t len); + +/** + * @macrosection + * + * nghttp3_info flags + */ + +/** + * @macro + * + * :macro:`NGHTTP3_VERSION_AGE` is the age of :type:`nghttp3_info`. + */ +#define NGHTTP3_VERSION_AGE 1 + +/** + * @struct + * + * :type:`nghttp3_info` is what `nghttp3_version` returns. It holds + * information about the particular nghttp3 version. + */ +typedef struct nghttp3_info { + /** + * :member:`age` is the age of this struct. This instance of + * nghttp3 sets it to :macro:`NGHTTP3_VERSION_AGE` but a future + * version may bump it and add more struct fields at the bottom + */ + int age; + /** + * :member:`version_num` is the :macro:`NGHTTP3_VERSION_NUM` number + * (since age == 1) + */ + int version_num; + /** + * :member:`version_str` points to the :macro:`NGHTTP3_VERSION` + * string (since age ==1) + */ + const char *version_str; + /* -------- the above fields all exist when age == 1 */ +} nghttp3_info; + +/** + * @function + * + * `nghttp3_version` returns a pointer to a :type:`nghttp3_info` + * struct with version information about the run-time library in use. + * The |least_version| argument can be set to a 24 bit numerical value + * for the least accepted version number, and if the condition is not + * met, this function will return a ``NULL``. Pass in 0 to skip the + * version checking. + */ +NGHTTP3_EXTERN const nghttp3_info *nghttp3_version(int least_version); + +/** + * @function + * + * `nghttp3_err_is_fatal` returns nonzero if |liberr| is a fatal + * error. |liberr| must be one of nghttp3 library error codes (which + * is defined as NGHTTP3_ERR_* macro, such as + * :macro:`NGHTTP3_ERR_NOMEM`). + */ +NGHTTP3_EXTERN int nghttp3_err_is_fatal(int liberr); + +/* + * Versioned function wrappers + */ + +/* + * `nghttp3_settings_default` is a wrapper around + * `nghttp3_settings_default_versioned` to set the correct struct + * version. + */ +#define nghttp3_settings_default(SETTINGS) \ + nghttp3_settings_default_versioned(NGHTTP3_SETTINGS_VERSION, (SETTINGS)) + +/* + * `nghttp3_conn_client_new` is a wrapper around + * `nghttp3_conn_client_new_versioned` to set the correct struct + * version. + */ +#define nghttp3_conn_client_new(PCONN, CALLBACKS, SETTINGS, MEM, USER_DATA) \ + nghttp3_conn_client_new_versioned((PCONN), NGHTTP3_CALLBACKS_VERSION, \ + (CALLBACKS), NGHTTP3_SETTINGS_VERSION, \ + (SETTINGS), (MEM), (USER_DATA)) + +/* + * `nghttp3_conn_server_new` is a wrapper around + * `nghttp3_conn_server_new_versioned` to set the correct struct + * version. + */ +#define nghttp3_conn_server_new(PCONN, CALLBACKS, SETTINGS, MEM, USER_DATA) \ + nghttp3_conn_server_new_versioned((PCONN), NGHTTP3_CALLBACKS_VERSION, \ + (CALLBACKS), NGHTTP3_SETTINGS_VERSION, \ + (SETTINGS), (MEM), (USER_DATA)) + +/* + * `nghttp3_conn_set_server_stream_priority` is a wrapper around + * `nghttp3_conn_set_server_stream_priority_versioned` to set the + * correct struct version. + */ +#define nghttp3_conn_set_server_stream_priority(CONN, STREAM_ID, PRI) \ + nghttp3_conn_set_server_stream_priority_versioned( \ + (CONN), (STREAM_ID), NGHTTP3_PRI_VERSION, (PRI)) + +/* + * `nghttp3_conn_get_stream_priority` is a wrapper around + * `nghttp3_conn_get_stream_priority_versioned` to set the correct + * struct version. + */ +#define nghttp3_conn_get_stream_priority(CONN, DEST, STREAM_ID) \ + nghttp3_conn_get_stream_priority_versioned((CONN), NGHTTP3_PRI_VERSION, \ + (DEST), (STREAM_ID)) + +/* + * `nghttp3_pri_parse_priority` is a wrapper around + * `nghttp3_pri_parse_priority_versioned` to set the correct struct + * version. + */ +#define nghttp3_pri_parse_priority(DEST, VALUE, LEN) \ + nghttp3_pri_parse_priority_versioned(NGHTTP3_PRI_VERSION, (DEST), (VALUE), \ + (LEN)) + +#ifdef __cplusplus +} +#endif /* defined(__cplusplus) */ + +#endif /* !defined(NGHTTP3_H) */ diff --git a/contrib/libs/nghttp3/lib/includes/nghttp3/version.h b/contrib/libs/nghttp3/lib/includes/nghttp3/version.h new file mode 100644 index 0000000000..7f6cb8acff --- /dev/null +++ b/contrib/libs/nghttp3/lib/includes/nghttp3/version.h @@ -0,0 +1,46 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2016 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_VERSION_H +#define NGHTTP3_VERSION_H + +/** + * @macro + * + * Version number of the nghttp3 library release. + */ +#define NGHTTP3_VERSION "1.6.0" + +/** + * @macro + * + * Numerical representation of the version number of the nghttp3 + * library release. This is a 24 bit number with 8 bits for major + * number, 8 bits for minor and 8 bits for patch. Version 1.2.3 + * becomes 0x010203. + */ +#define NGHTTP3_VERSION_NUM 0x010600 + +#endif /* !defined(NGHTTP3_VERSION_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_balloc.c b/contrib/libs/nghttp3/lib/nghttp3_balloc.c new file mode 100644 index 0000000000..544e4fb130 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_balloc.c @@ -0,0 +1,91 @@ +/* + * nghttp3 + * + * Copyright (c) 2022 nghttp3 contributors + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_balloc.h" + +#include <assert.h> + +#include "nghttp3_mem.h" + +void nghttp3_balloc_init(nghttp3_balloc *balloc, size_t blklen, + const nghttp3_mem *mem) { + assert((blklen & 0xfu) == 0); + + balloc->mem = mem; + balloc->blklen = blklen; + balloc->head = NULL; + nghttp3_buf_wrap_init(&balloc->buf, (void *)"", 0); +} + +void nghttp3_balloc_free(nghttp3_balloc *balloc) { + if (balloc == NULL) { + return; + } + + nghttp3_balloc_clear(balloc); +} + +void nghttp3_balloc_clear(nghttp3_balloc *balloc) { + nghttp3_memblock_hd *p, *next; + + for (p = balloc->head; p; p = next) { + next = p->next; + nghttp3_mem_free(balloc->mem, p); + } + + balloc->head = NULL; + nghttp3_buf_wrap_init(&balloc->buf, (void *)"", 0); +} + +int nghttp3_balloc_get(nghttp3_balloc *balloc, void **pbuf, size_t n) { + uint8_t *p; + nghttp3_memblock_hd *hd; + + assert(n <= balloc->blklen); + + if (nghttp3_buf_left(&balloc->buf) < n) { + p = nghttp3_mem_malloc(balloc->mem, + sizeof(nghttp3_memblock_hd) + 0x8u + balloc->blklen); + if (p == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + hd = (nghttp3_memblock_hd *)(void *)p; + hd->next = balloc->head; + balloc->head = hd; + nghttp3_buf_wrap_init( + &balloc->buf, + (uint8_t *)(((uintptr_t)p + sizeof(nghttp3_memblock_hd) + 0xfu) & + ~(uintptr_t)0xfu), + balloc->blklen); + } + + assert(((uintptr_t)balloc->buf.last & 0xfu) == 0); + + *pbuf = balloc->buf.last; + balloc->buf.last += (n + 0xfu) & ~(uintptr_t)0xfu; + + return 0; +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_balloc.h b/contrib/libs/nghttp3/lib/nghttp3_balloc.h new file mode 100644 index 0000000000..c95f0426a9 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_balloc.h @@ -0,0 +1,95 @@ +/* + * nghttp3 + * + * Copyright (c) 2022 nghttp3 contributors + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_BALLOC_H +#define NGHTTP3_BALLOC_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_buf.h" + +typedef struct nghttp3_memblock_hd nghttp3_memblock_hd; + +/* + * nghttp3_memblock_hd is the header of memory block. + */ +struct nghttp3_memblock_hd { + union { + nghttp3_memblock_hd *next; + uint64_t pad; + }; +}; + +/* + * nghttp3_balloc is a custom memory allocator. It allocates |blklen| + * bytes of memory at once on demand, and returns its slice when the + * allocation is requested. + */ +typedef struct nghttp3_balloc { + /* mem is the underlying memory allocator. */ + const nghttp3_mem *mem; + /* blklen is the size of memory block. */ + size_t blklen; + /* head points to the list of memory block allocated so far. */ + nghttp3_memblock_hd *head; + /* buf wraps the current memory block for allocation requests. */ + nghttp3_buf buf; +} nghttp3_balloc; + +/* + * nghttp3_balloc_init initializes |balloc| with |blklen| which is the + * size of memory block. + */ +void nghttp3_balloc_init(nghttp3_balloc *balloc, size_t blklen, + const nghttp3_mem *mem); + +/* + * nghttp3_balloc_free releases all allocated memory blocks. + */ +void nghttp3_balloc_free(nghttp3_balloc *balloc); + +/* + * nghttp3_balloc_get allocates |n| bytes of memory and assigns its + * pointer to |*pbuf|. + * + * It returns 0 if it succeeds, or one of the following negative error + * codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_balloc_get(nghttp3_balloc *balloc, void **pbuf, size_t n); + +/* + * nghttp3_balloc_clear releases all allocated memory blocks and + * initializes its state. + */ +void nghttp3_balloc_clear(nghttp3_balloc *balloc); + +#endif /* !defined(NGHTTP3_BALLOC_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_buf.c b/contrib/libs/nghttp3/lib/nghttp3_buf.c new file mode 100644 index 0000000000..aae075a73c --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_buf.c @@ -0,0 +1,90 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_buf.h" + +void nghttp3_buf_init(nghttp3_buf *buf) { + buf->begin = buf->end = buf->pos = buf->last = NULL; +} + +void nghttp3_buf_wrap_init(nghttp3_buf *buf, uint8_t *src, size_t len) { + buf->begin = buf->pos = buf->last = src; + buf->end = buf->begin + len; +} + +void nghttp3_buf_free(nghttp3_buf *buf, const nghttp3_mem *mem) { + nghttp3_mem_free(mem, buf->begin); +} + +size_t nghttp3_buf_left(const nghttp3_buf *buf) { + return (size_t)(buf->end - buf->last); +} + +size_t nghttp3_buf_len(const nghttp3_buf *buf) { + return (size_t)(buf->last - buf->pos); +} + +size_t nghttp3_buf_cap(const nghttp3_buf *buf) { + return (size_t)(buf->end - buf->begin); +} + +void nghttp3_buf_reset(nghttp3_buf *buf) { buf->pos = buf->last = buf->begin; } + +int nghttp3_buf_reserve(nghttp3_buf *buf, size_t size, const nghttp3_mem *mem) { + uint8_t *p; + nghttp3_ssize pos_offset, last_offset; + + if ((size_t)(buf->end - buf->begin) >= size) { + return 0; + } + + pos_offset = buf->pos - buf->begin; + last_offset = buf->last - buf->begin; + + p = nghttp3_mem_realloc(mem, buf->begin, size); + if (p == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + buf->begin = p; + buf->end = p + size; + buf->pos = p + pos_offset; + buf->last = p + last_offset; + + return 0; +} + +void nghttp3_buf_swap(nghttp3_buf *a, nghttp3_buf *b) { + nghttp3_buf c = *a; + + *a = *b; + *b = c; +} + +void nghttp3_typed_buf_init(nghttp3_typed_buf *tbuf, const nghttp3_buf *buf, + nghttp3_buf_type type) { + tbuf->buf = *buf; + tbuf->type = type; +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_buf.h b/contrib/libs/nghttp3/lib/nghttp3_buf.h new file mode 100644 index 0000000000..9fa067de91 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_buf.h @@ -0,0 +1,74 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_BUF_H +#define NGHTTP3_BUF_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_mem.h" + +void nghttp3_buf_wrap_init(nghttp3_buf *buf, uint8_t *src, size_t len); + +/* + * nghttp3_buf_cap returns the capacity of the buffer. In other + * words, it returns buf->end - buf->begin. + */ +size_t nghttp3_buf_cap(const nghttp3_buf *buf); + +int nghttp3_buf_reserve(nghttp3_buf *buf, size_t size, const nghttp3_mem *mem); + +/* + * nghttp3_buf_swap swaps |a| and |b|. + */ +void nghttp3_buf_swap(nghttp3_buf *a, nghttp3_buf *b); + +typedef enum nghttp3_buf_type { + /* NGHTTP3_BUF_TYPE_PRIVATE indicates that memory is allocated for + this buffer only and should be freed after its use. */ + NGHTTP3_BUF_TYPE_PRIVATE, + /* NGHTTP3_BUF_TYPE_SHARED indicates that buffer points to shared + memory. */ + NGHTTP3_BUF_TYPE_SHARED, + /* NGHTTP3_BUF_TYPE_ALIEN indicates that the buffer points to a + memory which comes from outside of the library. */ + NGHTTP3_BUF_TYPE_ALIEN, +} nghttp3_buf_type; + +typedef struct nghttp3_typed_buf { + nghttp3_buf buf; + nghttp3_buf_type type; +} nghttp3_typed_buf; + +void nghttp3_typed_buf_init(nghttp3_typed_buf *tbuf, const nghttp3_buf *buf, + nghttp3_buf_type type); + +void nghttp3_typed_buf_free(nghttp3_typed_buf *tbuf); + +#endif /* !defined(NGHTTP3_BUF_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_conn.c b/contrib/libs/nghttp3/lib/nghttp3_conn.c new file mode 100644 index 0000000000..f70b4f5472 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_conn.c @@ -0,0 +1,2638 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_conn.h" + +#include <assert.h> +#include <string.h> +#include <stdio.h> + +#include "nghttp3_mem.h" +#include "nghttp3_macro.h" +#include "nghttp3_err.h" +#include "nghttp3_conv.h" +#include "nghttp3_http.h" +#include "nghttp3_unreachable.h" + +/* NGHTTP3_QPACK_ENCODER_MAX_DTABLE_CAPACITY is the upper bound of the + dynamic table capacity that QPACK encoder is willing to use. */ +#define NGHTTP3_QPACK_ENCODER_MAX_DTABLE_CAPACITY 4096 + +nghttp3_objalloc_def(chunk, nghttp3_chunk, oplent); + +/* + * conn_remote_stream_uni returns nonzero if |stream_id| is remote + * unidirectional stream ID. + */ +static int conn_remote_stream_uni(nghttp3_conn *conn, int64_t stream_id) { + if (conn->server) { + return (stream_id & 0x03) == 0x02; + } + return (stream_id & 0x03) == 0x03; +} + +static int conn_call_begin_headers(nghttp3_conn *conn, nghttp3_stream *stream) { + int rv; + + if (!conn->callbacks.begin_headers) { + return 0; + } + + rv = conn->callbacks.begin_headers(conn, stream->node.id, conn->user_data, + stream->user_data); + if (rv != 0) { + /* TODO Allow ignore headers */ + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_end_headers(nghttp3_conn *conn, nghttp3_stream *stream, + int fin) { + int rv; + + if (!conn->callbacks.end_headers) { + return 0; + } + + rv = conn->callbacks.end_headers(conn, stream->node.id, fin, conn->user_data, + stream->user_data); + if (rv != 0) { + /* TODO Allow ignore headers */ + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_begin_trailers(nghttp3_conn *conn, + nghttp3_stream *stream) { + int rv; + + if (!conn->callbacks.begin_trailers) { + return 0; + } + + rv = conn->callbacks.begin_trailers(conn, stream->node.id, conn->user_data, + stream->user_data); + if (rv != 0) { + /* TODO Allow ignore headers */ + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_end_trailers(nghttp3_conn *conn, nghttp3_stream *stream, + int fin) { + int rv; + + if (!conn->callbacks.end_trailers) { + return 0; + } + + rv = conn->callbacks.end_trailers(conn, stream->node.id, fin, conn->user_data, + stream->user_data); + if (rv != 0) { + /* TODO Allow ignore headers */ + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_end_stream(nghttp3_conn *conn, nghttp3_stream *stream) { + int rv; + + if (!conn->callbacks.end_stream) { + return 0; + } + + rv = conn->callbacks.end_stream(conn, stream->node.id, conn->user_data, + stream->user_data); + if (rv != 0) { + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_stop_sending(nghttp3_conn *conn, nghttp3_stream *stream, + uint64_t app_error_code) { + int rv; + + if (!conn->callbacks.stop_sending) { + return 0; + } + + rv = conn->callbacks.stop_sending(conn, stream->node.id, app_error_code, + conn->user_data, stream->user_data); + if (rv != 0) { + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_reset_stream(nghttp3_conn *conn, nghttp3_stream *stream, + uint64_t app_error_code) { + int rv; + + if (!conn->callbacks.reset_stream) { + return 0; + } + + rv = conn->callbacks.reset_stream(conn, stream->node.id, app_error_code, + conn->user_data, stream->user_data); + if (rv != 0) { + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_deferred_consume(nghttp3_conn *conn, + nghttp3_stream *stream, + size_t nconsumed) { + int rv; + + if (nconsumed == 0 || !conn->callbacks.deferred_consume) { + return 0; + } + + rv = conn->callbacks.deferred_consume(conn, stream->node.id, nconsumed, + conn->user_data, stream->user_data); + if (rv != 0) { + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_recv_settings(nghttp3_conn *conn) { + int rv; + + if (!conn->callbacks.recv_settings) { + return 0; + } + + rv = conn->callbacks.recv_settings(conn, &conn->remote.settings, + conn->user_data); + if (rv != 0) { + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int ricnt_less(const nghttp3_pq_entry *lhsx, + const nghttp3_pq_entry *rhsx) { + nghttp3_stream *lhs = + nghttp3_struct_of(lhsx, nghttp3_stream, qpack_blocked_pe); + nghttp3_stream *rhs = + nghttp3_struct_of(rhsx, nghttp3_stream, qpack_blocked_pe); + + return lhs->qpack_sctx.ricnt < rhs->qpack_sctx.ricnt; +} + +static int cycle_less(const nghttp3_pq_entry *lhsx, + const nghttp3_pq_entry *rhsx) { + const nghttp3_tnode *lhs = nghttp3_struct_of(lhsx, nghttp3_tnode, pe); + const nghttp3_tnode *rhs = nghttp3_struct_of(rhsx, nghttp3_tnode, pe); + + if (lhs->cycle == rhs->cycle) { + return lhs->id < rhs->id; + } + + return rhs->cycle - lhs->cycle <= NGHTTP3_TNODE_MAX_CYCLE_GAP; +} + +static int conn_new(nghttp3_conn **pconn, int server, int callbacks_version, + const nghttp3_callbacks *callbacks, int settings_version, + const nghttp3_settings *settings, const nghttp3_mem *mem, + void *user_data) { + int rv; + nghttp3_conn *conn; + size_t i; + (void)callbacks_version; + (void)settings_version; + + if (mem == NULL) { + mem = nghttp3_mem_default(); + } + + conn = nghttp3_mem_calloc(mem, 1, sizeof(nghttp3_conn)); + if (conn == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + nghttp3_objalloc_init(&conn->out_chunk_objalloc, + NGHTTP3_STREAM_MIN_CHUNK_SIZE * 16, mem); + nghttp3_objalloc_stream_init(&conn->stream_objalloc, 8, mem); + + nghttp3_map_init(&conn->streams, mem); + + rv = + nghttp3_qpack_decoder_init(&conn->qdec, settings->qpack_max_dtable_capacity, + settings->qpack_blocked_streams, mem); + if (rv != 0) { + goto qdec_init_fail; + } + + rv = nghttp3_qpack_encoder_init( + &conn->qenc, settings->qpack_encoder_max_dtable_capacity, mem); + if (rv != 0) { + goto qenc_init_fail; + } + + nghttp3_pq_init(&conn->qpack_blocked_streams, ricnt_less, mem); + + for (i = 0; i < NGHTTP3_URGENCY_LEVELS; ++i) { + nghttp3_pq_init(&conn->sched[i].spq, cycle_less, mem); + } + + nghttp3_idtr_init(&conn->remote.bidi.idtr, mem); + + conn->callbacks = *callbacks; + conn->local.settings = *settings; + if (!server) { + conn->local.settings.enable_connect_protocol = 0; + } + nghttp3_settings_default(&conn->remote.settings); + conn->mem = mem; + conn->user_data = user_data; + conn->server = server; + conn->rx.goaway_id = NGHTTP3_VARINT_MAX + 1; + conn->tx.goaway_id = NGHTTP3_VARINT_MAX + 1; + conn->rx.max_stream_id_bidi = -4; + + *pconn = conn; + + return 0; + +qenc_init_fail: + nghttp3_qpack_decoder_free(&conn->qdec); +qdec_init_fail: + nghttp3_map_free(&conn->streams); + nghttp3_objalloc_free(&conn->stream_objalloc); + nghttp3_objalloc_free(&conn->out_chunk_objalloc); + nghttp3_mem_free(mem, conn); + + return rv; +} + +int nghttp3_conn_client_new_versioned(nghttp3_conn **pconn, + int callbacks_version, + const nghttp3_callbacks *callbacks, + int settings_version, + const nghttp3_settings *settings, + const nghttp3_mem *mem, void *user_data) { + int rv; + + rv = conn_new(pconn, /* server = */ 0, callbacks_version, callbacks, + settings_version, settings, mem, user_data); + if (rv != 0) { + return rv; + } + + return 0; +} + +int nghttp3_conn_server_new_versioned(nghttp3_conn **pconn, + int callbacks_version, + const nghttp3_callbacks *callbacks, + int settings_version, + const nghttp3_settings *settings, + const nghttp3_mem *mem, void *user_data) { + int rv; + + rv = conn_new(pconn, /* server = */ 1, callbacks_version, callbacks, + settings_version, settings, mem, user_data); + if (rv != 0) { + return rv; + } + + return 0; +} + +static int free_stream(void *data, void *ptr) { + nghttp3_stream *stream = data; + + (void)ptr; + + nghttp3_stream_del(stream); + + return 0; +} + +void nghttp3_conn_del(nghttp3_conn *conn) { + size_t i; + + if (conn == NULL) { + return; + } + + nghttp3_buf_free(&conn->tx.qpack.ebuf, conn->mem); + nghttp3_buf_free(&conn->tx.qpack.rbuf, conn->mem); + + nghttp3_idtr_free(&conn->remote.bidi.idtr); + + for (i = 0; i < NGHTTP3_URGENCY_LEVELS; ++i) { + nghttp3_pq_free(&conn->sched[i].spq); + } + + nghttp3_pq_free(&conn->qpack_blocked_streams); + + nghttp3_qpack_encoder_free(&conn->qenc); + nghttp3_qpack_decoder_free(&conn->qdec); + + nghttp3_map_each(&conn->streams, free_stream, NULL); + nghttp3_map_free(&conn->streams); + + nghttp3_objalloc_free(&conn->stream_objalloc); + nghttp3_objalloc_free(&conn->out_chunk_objalloc); + + nghttp3_mem_free(conn->mem, conn); +} + +static int conn_bidi_idtr_open(nghttp3_conn *conn, int64_t stream_id) { + int rv; + + rv = nghttp3_idtr_open(&conn->remote.bidi.idtr, stream_id); + if (rv != 0) { + return rv; + } + + if (nghttp3_ksl_len(&conn->remote.bidi.idtr.gap.gap) > 32) { + nghttp3_gaptr_drop_first_gap(&conn->remote.bidi.idtr.gap); + } + + return 0; +} + +nghttp3_ssize nghttp3_conn_read_stream(nghttp3_conn *conn, int64_t stream_id, + const uint8_t *src, size_t srclen, + int fin) { + nghttp3_stream *stream; + size_t bidi_nproc; + int rv; + + stream = nghttp3_conn_find_stream(conn, stream_id); + if (stream == NULL) { + /* TODO Assert idtr */ + /* QUIC transport ensures that this is new stream. */ + if (conn->server) { + if (nghttp3_client_stream_bidi(stream_id)) { + rv = conn_bidi_idtr_open(conn, stream_id); + if (rv != 0) { + if (nghttp3_err_is_fatal(rv)) { + return rv; + } + + /* Ignore return value. We might drop the first gap if there + are many gaps if QUIC stack allows too many holes in stream + ID space. idtr is used to decide whether PRIORITY_UPDATE + frame should be ignored or not and the frame is optional. + Ignoring them causes no harm. */ + } + + conn->rx.max_stream_id_bidi = + nghttp3_max_int64(conn->rx.max_stream_id_bidi, stream_id); + rv = nghttp3_conn_create_stream(conn, &stream, stream_id); + if (rv != 0) { + return rv; + } + + if ((conn->flags & NGHTTP3_CONN_FLAG_GOAWAY_QUEUED) && + conn->tx.goaway_id <= stream_id) { + stream->rstate.state = NGHTTP3_REQ_STREAM_STATE_IGN_REST; + + rv = nghttp3_conn_reject_stream(conn, stream); + if (rv != 0) { + return rv; + } + } + } else { + /* unidirectional stream */ + if (srclen == 0 && fin) { + return 0; + } + + rv = nghttp3_conn_create_stream(conn, &stream, stream_id); + if (rv != 0) { + return rv; + } + } + + stream->rx.hstate = NGHTTP3_HTTP_STATE_REQ_INITIAL; + stream->tx.hstate = NGHTTP3_HTTP_STATE_REQ_INITIAL; + } else if (nghttp3_stream_uni(stream_id)) { + if (srclen == 0 && fin) { + return 0; + } + + rv = nghttp3_conn_create_stream(conn, &stream, stream_id); + if (rv != 0) { + return rv; + } + + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_INITIAL; + stream->tx.hstate = NGHTTP3_HTTP_STATE_RESP_INITIAL; + } else { + /* client doesn't expect to receive new bidirectional stream + from server. */ + return NGHTTP3_ERR_H3_STREAM_CREATION_ERROR; + } + } else if (conn->server) { + if (nghttp3_client_stream_bidi(stream_id)) { + if (stream->rx.hstate == NGHTTP3_HTTP_STATE_NONE) { + stream->rx.hstate = NGHTTP3_HTTP_STATE_REQ_INITIAL; + stream->tx.hstate = NGHTTP3_HTTP_STATE_REQ_INITIAL; + } + } + } + + if (srclen == 0 && !fin) { + return 0; + } + + if (nghttp3_stream_uni(stream_id)) { + return nghttp3_conn_read_uni(conn, stream, src, srclen, fin); + } + + if (fin) { + stream->flags |= NGHTTP3_STREAM_FLAG_READ_EOF; + } + return nghttp3_conn_read_bidi(conn, &bidi_nproc, stream, src, srclen, fin); +} + +static nghttp3_ssize conn_read_type(nghttp3_conn *conn, nghttp3_stream *stream, + const uint8_t *src, size_t srclen, + int fin) { + nghttp3_stream_read_state *rstate = &stream->rstate; + nghttp3_varint_read_state *rvint = &rstate->rvint; + nghttp3_ssize nread; + int64_t stream_type; + + assert(srclen); + + nread = nghttp3_read_varint(rvint, src, src + srclen, fin); + if (nread < 0) { + return NGHTTP3_ERR_H3_GENERAL_PROTOCOL_ERROR; + } + + if (rvint->left) { + return nread; + } + + stream_type = rvint->acc; + nghttp3_varint_read_state_reset(rvint); + + switch (stream_type) { + case NGHTTP3_STREAM_TYPE_CONTROL: + if (conn->flags & NGHTTP3_CONN_FLAG_CONTROL_OPENED) { + return NGHTTP3_ERR_H3_STREAM_CREATION_ERROR; + } + conn->flags |= NGHTTP3_CONN_FLAG_CONTROL_OPENED; + stream->type = NGHTTP3_STREAM_TYPE_CONTROL; + rstate->state = NGHTTP3_CTRL_STREAM_STATE_FRAME_TYPE; + break; + case NGHTTP3_STREAM_TYPE_PUSH: + return NGHTTP3_ERR_H3_STREAM_CREATION_ERROR; + case NGHTTP3_STREAM_TYPE_QPACK_ENCODER: + if (conn->flags & NGHTTP3_CONN_FLAG_QPACK_ENCODER_OPENED) { + return NGHTTP3_ERR_H3_STREAM_CREATION_ERROR; + } + conn->flags |= NGHTTP3_CONN_FLAG_QPACK_ENCODER_OPENED; + stream->type = NGHTTP3_STREAM_TYPE_QPACK_ENCODER; + break; + case NGHTTP3_STREAM_TYPE_QPACK_DECODER: + if (conn->flags & NGHTTP3_CONN_FLAG_QPACK_DECODER_OPENED) { + return NGHTTP3_ERR_H3_STREAM_CREATION_ERROR; + } + conn->flags |= NGHTTP3_CONN_FLAG_QPACK_DECODER_OPENED; + stream->type = NGHTTP3_STREAM_TYPE_QPACK_DECODER; + break; + default: + stream->type = NGHTTP3_STREAM_TYPE_UNKNOWN; + break; + } + + stream->flags |= NGHTTP3_STREAM_FLAG_TYPE_IDENTIFIED; + + return nread; +} + +static int conn_delete_stream(nghttp3_conn *conn, nghttp3_stream *stream); + +nghttp3_ssize nghttp3_conn_read_uni(nghttp3_conn *conn, nghttp3_stream *stream, + const uint8_t *src, size_t srclen, + int fin) { + nghttp3_ssize nread = 0; + nghttp3_ssize nconsumed = 0; + int rv; + + assert(srclen || fin); + + if (!(stream->flags & NGHTTP3_STREAM_FLAG_TYPE_IDENTIFIED)) { + if (srclen == 0 && fin) { + /* Ignore stream if it is closed before reading stream header. + If it is closed while reading it, return error, making it + consistent in our code base. */ + if (stream->rstate.rvint.left) { + return NGHTTP3_ERR_H3_GENERAL_PROTOCOL_ERROR; + } + + rv = conn_delete_stream(conn, stream); + assert(0 == rv); + + return 0; + } + nread = conn_read_type(conn, stream, src, srclen, fin); + if (nread < 0) { + return (int)nread; + } + if (!(stream->flags & NGHTTP3_STREAM_FLAG_TYPE_IDENTIFIED)) { + assert((size_t)nread == srclen); + return (nghttp3_ssize)srclen; + } + + src += nread; + srclen -= (size_t)nread; + + if (srclen == 0) { + return nread; + } + } + + switch (stream->type) { + case NGHTTP3_STREAM_TYPE_CONTROL: + if (fin) { + return NGHTTP3_ERR_H3_CLOSED_CRITICAL_STREAM; + } + nconsumed = nghttp3_conn_read_control(conn, stream, src, srclen); + break; + case NGHTTP3_STREAM_TYPE_QPACK_ENCODER: + if (fin) { + return NGHTTP3_ERR_H3_CLOSED_CRITICAL_STREAM; + } + nconsumed = nghttp3_conn_read_qpack_encoder(conn, src, srclen); + break; + case NGHTTP3_STREAM_TYPE_QPACK_DECODER: + if (fin) { + return NGHTTP3_ERR_H3_CLOSED_CRITICAL_STREAM; + } + nconsumed = nghttp3_conn_read_qpack_decoder(conn, src, srclen); + break; + case NGHTTP3_STREAM_TYPE_UNKNOWN: + nconsumed = (nghttp3_ssize)srclen; + + rv = conn_call_stop_sending(conn, stream, NGHTTP3_H3_STREAM_CREATION_ERROR); + if (rv != 0) { + return rv; + } + break; + default: + nghttp3_unreachable(); + } + + if (nconsumed < 0) { + return nconsumed; + } + + return nread + nconsumed; +} + +static int frame_fin(nghttp3_stream_read_state *rstate, size_t len) { + return (int64_t)len >= rstate->left; +} + +nghttp3_ssize nghttp3_conn_read_control(nghttp3_conn *conn, + nghttp3_stream *stream, + const uint8_t *src, size_t srclen) { + const uint8_t *p = src, *end = src + srclen; + int rv; + nghttp3_stream_read_state *rstate = &stream->rstate; + nghttp3_varint_read_state *rvint = &rstate->rvint; + nghttp3_ssize nread; + size_t nconsumed = 0; + int busy = 0; + size_t len; + const uint8_t *pri_field_value = NULL; + size_t pri_field_valuelen = 0; + + assert(srclen); + + for (; p != end || busy;) { + busy = 0; + switch (rstate->state) { + case NGHTTP3_CTRL_STREAM_STATE_FRAME_TYPE: + assert(end - p > 0); + nread = nghttp3_read_varint(rvint, p, end, /* fin = */ 0); + if (nread < 0) { + return NGHTTP3_ERR_H3_GENERAL_PROTOCOL_ERROR; + } + + p += nread; + nconsumed += (size_t)nread; + if (rvint->left) { + return (nghttp3_ssize)nconsumed; + } + + rstate->fr.hd.type = rvint->acc; + nghttp3_varint_read_state_reset(rvint); + rstate->state = NGHTTP3_CTRL_STREAM_STATE_FRAME_LENGTH; + if (p == end) { + break; + } + /* Fall through */ + case NGHTTP3_CTRL_STREAM_STATE_FRAME_LENGTH: + assert(end - p > 0); + nread = nghttp3_read_varint(rvint, p, end, /* fin = */ 0); + if (nread < 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + + p += nread; + nconsumed += (size_t)nread; + if (rvint->left) { + return (nghttp3_ssize)nconsumed; + } + + rstate->left = rstate->fr.hd.length = rvint->acc; + nghttp3_varint_read_state_reset(rvint); + + if (!(conn->flags & NGHTTP3_CONN_FLAG_SETTINGS_RECVED)) { + if (rstate->fr.hd.type != NGHTTP3_FRAME_SETTINGS) { + return NGHTTP3_ERR_H3_MISSING_SETTINGS; + } + conn->flags |= NGHTTP3_CONN_FLAG_SETTINGS_RECVED; + } else if (rstate->fr.hd.type == NGHTTP3_FRAME_SETTINGS) { + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + + switch (rstate->fr.hd.type) { + case NGHTTP3_FRAME_SETTINGS: + /* SETTINGS frame might be empty. */ + if (rstate->left == 0) { + rv = conn_call_recv_settings(conn); + if (rv != 0) { + return rv; + } + + nghttp3_stream_read_state_reset(rstate); + break; + } + rstate->state = NGHTTP3_CTRL_STREAM_STATE_SETTINGS; + break; + case NGHTTP3_FRAME_GOAWAY: + if (rstate->left == 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + rstate->state = NGHTTP3_CTRL_STREAM_STATE_GOAWAY; + break; + case NGHTTP3_FRAME_MAX_PUSH_ID: + if (!conn->server) { + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + if (rstate->left == 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + rstate->state = NGHTTP3_CTRL_STREAM_STATE_MAX_PUSH_ID; + break; + case NGHTTP3_FRAME_PRIORITY_UPDATE: + if (!conn->server) { + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + if (rstate->left == 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + rstate->state = NGHTTP3_CTRL_STREAM_STATE_PRIORITY_UPDATE_PRI_ELEM_ID; + break; + case NGHTTP3_FRAME_PRIORITY_UPDATE_PUSH_ID: + /* We do not support push */ + return NGHTTP3_ERR_H3_ID_ERROR; + case NGHTTP3_FRAME_CANCEL_PUSH: /* We do not support push */ + case NGHTTP3_FRAME_DATA: + case NGHTTP3_FRAME_HEADERS: + case NGHTTP3_FRAME_PUSH_PROMISE: + case NGHTTP3_H2_FRAME_PRIORITY: + case NGHTTP3_H2_FRAME_PING: + case NGHTTP3_H2_FRAME_WINDOW_UPDATE: + case NGHTTP3_H2_FRAME_CONTINUATION: + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + default: + /* TODO Handle reserved frame type */ + busy = 1; + rstate->state = NGHTTP3_CTRL_STREAM_STATE_IGN_FRAME; + break; + } + break; + case NGHTTP3_CTRL_STREAM_STATE_SETTINGS: + for (;;) { + if (rstate->left == 0) { + rv = conn_call_recv_settings(conn); + if (rv != 0) { + return rv; + } + + nghttp3_stream_read_state_reset(rstate); + break; + } + + if (p == end) { + return (nghttp3_ssize)nconsumed; + } + + /* Read Identifier */ + len = (size_t)nghttp3_min_int64(rstate->left, (int64_t)(end - p)); + assert(len > 0); + nread = nghttp3_read_varint(rvint, p, p + len, frame_fin(rstate, len)); + if (nread < 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + + p += nread; + nconsumed += (size_t)nread; + rstate->left -= nread; + if (rvint->left) { + rstate->state = NGHTTP3_CTRL_STREAM_STATE_SETTINGS_ID; + return (nghttp3_ssize)nconsumed; + } + rstate->fr.settings.iv[0].id = (uint64_t)rvint->acc; + nghttp3_varint_read_state_reset(rvint); + + /* Read Value */ + if (rstate->left == 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + + len -= (size_t)nread; + if (len == 0) { + rstate->state = NGHTTP3_CTRL_STREAM_STATE_SETTINGS_VALUE; + break; + } + + nread = nghttp3_read_varint(rvint, p, p + len, frame_fin(rstate, len)); + if (nread < 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + + p += nread; + nconsumed += (size_t)nread; + rstate->left -= nread; + if (rvint->left) { + rstate->state = NGHTTP3_CTRL_STREAM_STATE_SETTINGS_VALUE; + return (nghttp3_ssize)nconsumed; + } + rstate->fr.settings.iv[0].value = (uint64_t)rvint->acc; + nghttp3_varint_read_state_reset(rvint); + + rv = + nghttp3_conn_on_settings_entry_received(conn, &rstate->fr.settings); + if (rv != 0) { + return rv; + } + } + break; + case NGHTTP3_CTRL_STREAM_STATE_SETTINGS_ID: + len = (size_t)nghttp3_min_int64(rstate->left, (int64_t)(end - p)); + assert(len > 0); + nread = nghttp3_read_varint(rvint, p, p + len, frame_fin(rstate, len)); + if (nread < 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + + p += nread; + nconsumed += (size_t)nread; + rstate->left -= nread; + if (rvint->left) { + return (nghttp3_ssize)nconsumed; + } + rstate->fr.settings.iv[0].id = (uint64_t)rvint->acc; + nghttp3_varint_read_state_reset(rvint); + + if (rstate->left == 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + + rstate->state = NGHTTP3_CTRL_STREAM_STATE_SETTINGS_VALUE; + + if (p == end) { + return (nghttp3_ssize)nconsumed; + } + /* Fall through */ + case NGHTTP3_CTRL_STREAM_STATE_SETTINGS_VALUE: + len = (size_t)nghttp3_min_int64(rstate->left, (int64_t)(end - p)); + assert(len > 0); + nread = nghttp3_read_varint(rvint, p, p + len, frame_fin(rstate, len)); + if (nread < 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + + p += nread; + nconsumed += (size_t)nread; + rstate->left -= nread; + if (rvint->left) { + return (nghttp3_ssize)nconsumed; + } + rstate->fr.settings.iv[0].value = (uint64_t)rvint->acc; + nghttp3_varint_read_state_reset(rvint); + + rv = nghttp3_conn_on_settings_entry_received(conn, &rstate->fr.settings); + if (rv != 0) { + return rv; + } + + if (rstate->left) { + rstate->state = NGHTTP3_CTRL_STREAM_STATE_SETTINGS; + break; + } + + rv = conn_call_recv_settings(conn); + if (rv != 0) { + return rv; + } + + nghttp3_stream_read_state_reset(rstate); + break; + case NGHTTP3_CTRL_STREAM_STATE_GOAWAY: + len = (size_t)nghttp3_min_int64(rstate->left, (int64_t)(end - p)); + assert(len > 0); + nread = nghttp3_read_varint(rvint, p, p + len, frame_fin(rstate, len)); + if (nread < 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + + p += nread; + nconsumed += (size_t)nread; + rstate->left -= nread; + if (rvint->left) { + return (nghttp3_ssize)nconsumed; + } + + if (!conn->server && !nghttp3_client_stream_bidi(rvint->acc)) { + return NGHTTP3_ERR_H3_ID_ERROR; + } + if (conn->rx.goaway_id < rvint->acc) { + return NGHTTP3_ERR_H3_ID_ERROR; + } + + conn->flags |= NGHTTP3_CONN_FLAG_GOAWAY_RECVED; + conn->rx.goaway_id = rvint->acc; + nghttp3_varint_read_state_reset(rvint); + + if (conn->callbacks.shutdown) { + rv = + conn->callbacks.shutdown(conn, conn->rx.goaway_id, conn->user_data); + if (rv != 0) { + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + } + + nghttp3_stream_read_state_reset(rstate); + break; + case NGHTTP3_CTRL_STREAM_STATE_MAX_PUSH_ID: + /* server side only */ + len = (size_t)nghttp3_min_int64(rstate->left, (int64_t)(end - p)); + assert(len > 0); + nread = nghttp3_read_varint(rvint, p, p + len, frame_fin(rstate, len)); + if (nread < 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + + p += nread; + nconsumed += (size_t)nread; + rstate->left -= nread; + if (rvint->left) { + return (nghttp3_ssize)nconsumed; + } + + if (conn->local.uni.max_pushes > (uint64_t)rvint->acc + 1) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + + conn->local.uni.max_pushes = (uint64_t)rvint->acc + 1; + nghttp3_varint_read_state_reset(rvint); + + nghttp3_stream_read_state_reset(rstate); + break; + case NGHTTP3_CTRL_STREAM_STATE_PRIORITY_UPDATE_PRI_ELEM_ID: + /* server side only */ + len = (size_t)nghttp3_min_int64(rstate->left, (int64_t)(end - p)); + assert(len > 0); + nread = nghttp3_read_varint(rvint, p, p + len, frame_fin(rstate, len)); + if (nread < 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + + p += nread; + nconsumed += (size_t)nread; + rstate->left -= nread; + if (rvint->left) { + return (nghttp3_ssize)nconsumed; + } + + rstate->fr.priority_update.pri_elem_id = rvint->acc; + nghttp3_varint_read_state_reset(rvint); + + if (rstate->left == 0) { + rstate->fr.priority_update.pri.urgency = NGHTTP3_DEFAULT_URGENCY; + rstate->fr.priority_update.pri.inc = 0; + + rv = nghttp3_conn_on_priority_update(conn, &rstate->fr.priority_update); + if (rv != 0) { + return rv; + } + + nghttp3_stream_read_state_reset(rstate); + break; + } + + rstate->state = NGHTTP3_CTRL_STREAM_STATE_PRIORITY_UPDATE; + + /* Fall through */ + case NGHTTP3_CTRL_STREAM_STATE_PRIORITY_UPDATE: + /* We need to buffer Priority Field Value because it might be + fragmented. */ + len = (size_t)nghttp3_min_int64(rstate->left, (int64_t)(end - p)); + assert(len > 0); + if (conn->rx.pri_fieldbuflen == 0 && rstate->left == (int64_t)len) { + /* Everything is in the input buffer. Apply same length + limit we impose when buffering the field. */ + if (len > sizeof(conn->rx.pri_fieldbuf)) { + busy = 1; + rstate->state = NGHTTP3_CTRL_STREAM_STATE_IGN_FRAME; + break; + } + + pri_field_value = p; + pri_field_valuelen = len; + } else if (len + conn->rx.pri_fieldbuflen > + sizeof(conn->rx.pri_fieldbuf)) { + busy = 1; + rstate->state = NGHTTP3_CTRL_STREAM_STATE_IGN_FRAME; + break; + } else { + memcpy(conn->rx.pri_fieldbuf + conn->rx.pri_fieldbuflen, p, len); + conn->rx.pri_fieldbuflen += len; + + if (rstate->left == (int64_t)len) { + pri_field_value = conn->rx.pri_fieldbuf; + pri_field_valuelen = conn->rx.pri_fieldbuflen; + } + } + + p += len; + nconsumed += len; + rstate->left -= (int64_t)len; + + if (rstate->left) { + return (nghttp3_ssize)nconsumed; + } + + rstate->fr.priority_update.pri.urgency = NGHTTP3_DEFAULT_URGENCY; + rstate->fr.priority_update.pri.inc = 0; + + if (nghttp3_http_parse_priority(&rstate->fr.priority_update.pri, + pri_field_value, + pri_field_valuelen) != 0) { + return NGHTTP3_ERR_H3_GENERAL_PROTOCOL_ERROR; + } + + rv = nghttp3_conn_on_priority_update(conn, &rstate->fr.priority_update); + if (rv != 0) { + return rv; + } + + conn->rx.pri_fieldbuflen = 0; + + nghttp3_stream_read_state_reset(rstate); + break; + case NGHTTP3_CTRL_STREAM_STATE_IGN_FRAME: + len = (size_t)nghttp3_min_int64(rstate->left, (int64_t)(end - p)); + p += len; + nconsumed += len; + rstate->left -= (int64_t)len; + + if (rstate->left) { + return (nghttp3_ssize)nconsumed; + } + + nghttp3_stream_read_state_reset(rstate); + break; + default: + nghttp3_unreachable(); + } + } + + return (nghttp3_ssize)nconsumed; +} + +static int conn_delete_stream(nghttp3_conn *conn, nghttp3_stream *stream) { + int bidi = nghttp3_client_stream_bidi(stream->node.id); + int rv; + + rv = conn_call_deferred_consume(conn, stream, + nghttp3_stream_get_buffered_datalen(stream)); + if (rv != 0) { + return rv; + } + + if (bidi && conn->callbacks.stream_close) { + rv = conn->callbacks.stream_close(conn, stream->node.id, stream->error_code, + conn->user_data, stream->user_data); + if (rv != 0) { + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + } + + if (conn->server && nghttp3_client_stream_bidi(stream->node.id)) { + assert(conn->remote.bidi.num_streams > 0); + + --conn->remote.bidi.num_streams; + } + + rv = + nghttp3_map_remove(&conn->streams, (nghttp3_map_key_type)stream->node.id); + + assert(0 == rv); + + nghttp3_stream_del(stream); + + return 0; +} + +static int conn_process_blocked_stream_data(nghttp3_conn *conn, + nghttp3_stream *stream) { + nghttp3_buf *buf; + size_t nproc; + nghttp3_ssize nconsumed; + int rv; + size_t len; + + assert(nghttp3_client_stream_bidi(stream->node.id)); + + for (;;) { + len = nghttp3_ringbuf_len(&stream->inq); + if (len == 0) { + break; + } + + buf = nghttp3_ringbuf_get(&stream->inq, 0); + + nconsumed = nghttp3_conn_read_bidi( + conn, &nproc, stream, buf->pos, nghttp3_buf_len(buf), + len == 1 && (stream->flags & NGHTTP3_STREAM_FLAG_READ_EOF)); + if (nconsumed < 0) { + return (int)nconsumed; + } + + buf->pos += nproc; + + rv = conn_call_deferred_consume(conn, stream, (size_t)nconsumed); + if (rv != 0) { + return 0; + } + + if (nghttp3_buf_len(buf) == 0) { + nghttp3_buf_free(buf, stream->mem); + nghttp3_ringbuf_pop_front(&stream->inq); + } + + if (stream->flags & NGHTTP3_STREAM_FLAG_QPACK_DECODE_BLOCKED) { + break; + } + } + + if (!(stream->flags & NGHTTP3_STREAM_FLAG_QPACK_DECODE_BLOCKED) && + (stream->flags & NGHTTP3_STREAM_FLAG_CLOSED)) { + assert(stream->qpack_blocked_pe.index == NGHTTP3_PQ_BAD_INDEX); + + rv = conn_delete_stream(conn, stream); + if (rv != 0) { + return rv; + } + } + + return 0; +} + +nghttp3_ssize nghttp3_conn_read_qpack_encoder(nghttp3_conn *conn, + const uint8_t *src, + size_t srclen) { + nghttp3_ssize nconsumed = + nghttp3_qpack_decoder_read_encoder(&conn->qdec, src, srclen); + nghttp3_stream *stream; + int rv; + + if (nconsumed < 0) { + return nconsumed; + } + + for (; !nghttp3_pq_empty(&conn->qpack_blocked_streams);) { + stream = nghttp3_struct_of(nghttp3_pq_top(&conn->qpack_blocked_streams), + nghttp3_stream, qpack_blocked_pe); + if (nghttp3_qpack_stream_context_get_ricnt(&stream->qpack_sctx) > + nghttp3_qpack_decoder_get_icnt(&conn->qdec)) { + break; + } + + nghttp3_conn_qpack_blocked_streams_pop(conn); + stream->qpack_blocked_pe.index = NGHTTP3_PQ_BAD_INDEX; + stream->flags &= (uint16_t)~NGHTTP3_STREAM_FLAG_QPACK_DECODE_BLOCKED; + + rv = conn_process_blocked_stream_data(conn, stream); + if (rv != 0) { + return rv; + } + } + + return nconsumed; +} + +nghttp3_ssize nghttp3_conn_read_qpack_decoder(nghttp3_conn *conn, + const uint8_t *src, + size_t srclen) { + return nghttp3_qpack_encoder_read_decoder(&conn->qenc, src, srclen); +} + +static nghttp3_tnode *stream_get_sched_node(nghttp3_stream *stream) { + return &stream->node; +} + +static int conn_update_stream_priority(nghttp3_conn *conn, + nghttp3_stream *stream, + const nghttp3_pri *pri) { + assert(nghttp3_client_stream_bidi(stream->node.id)); + + if (nghttp3_pri_eq(&stream->node.pri, pri)) { + return 0; + } + + nghttp3_conn_unschedule_stream(conn, stream); + + stream->node.pri = *pri; + + if (nghttp3_stream_require_schedule(stream)) { + return nghttp3_conn_schedule_stream(conn, stream); + } + + return 0; +} + +nghttp3_ssize nghttp3_conn_read_bidi(nghttp3_conn *conn, size_t *pnproc, + nghttp3_stream *stream, const uint8_t *src, + size_t srclen, int fin) { + const uint8_t *p = src, *end = src ? src + srclen : src; + int rv; + nghttp3_stream_read_state *rstate = &stream->rstate; + nghttp3_varint_read_state *rvint = &rstate->rvint; + nghttp3_ssize nread; + size_t nconsumed = 0; + int busy = 0; + size_t len; + + if (stream->flags & NGHTTP3_STREAM_FLAG_SHUT_RD) { + *pnproc = srclen; + + return (nghttp3_ssize)srclen; + } + + if (stream->flags & NGHTTP3_STREAM_FLAG_QPACK_DECODE_BLOCKED) { + *pnproc = 0; + + if (srclen == 0) { + return 0; + } + + rv = nghttp3_stream_buffer_data(stream, p, (size_t)(end - p)); + if (rv != 0) { + return rv; + } + return 0; + } + + for (; p != end || busy;) { + busy = 0; + switch (rstate->state) { + case NGHTTP3_REQ_STREAM_STATE_FRAME_TYPE: + assert(end - p > 0); + nread = nghttp3_read_varint(rvint, p, end, fin); + if (nread < 0) { + return NGHTTP3_ERR_H3_GENERAL_PROTOCOL_ERROR; + } + + p += nread; + nconsumed += (size_t)nread; + if (rvint->left) { + goto almost_done; + } + + rstate->fr.hd.type = rvint->acc; + nghttp3_varint_read_state_reset(rvint); + rstate->state = NGHTTP3_REQ_STREAM_STATE_FRAME_LENGTH; + if (p == end) { + goto almost_done; + } + /* Fall through */ + case NGHTTP3_REQ_STREAM_STATE_FRAME_LENGTH: + assert(end - p > 0); + nread = nghttp3_read_varint(rvint, p, end, fin); + if (nread < 0) { + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + + p += nread; + nconsumed += (size_t)nread; + if (rvint->left) { + goto almost_done; + } + + rstate->left = rstate->fr.hd.length = rvint->acc; + nghttp3_varint_read_state_reset(rvint); + + switch (rstate->fr.hd.type) { + case NGHTTP3_FRAME_DATA: + rv = nghttp3_stream_transit_rx_http_state( + stream, NGHTTP3_HTTP_EVENT_DATA_BEGIN); + if (rv != 0) { + return rv; + } + /* DATA frame might be empty. */ + if (rstate->left == 0) { + rv = nghttp3_stream_transit_rx_http_state( + stream, NGHTTP3_HTTP_EVENT_DATA_END); + assert(0 == rv); + + nghttp3_stream_read_state_reset(rstate); + break; + } + rstate->state = NGHTTP3_REQ_STREAM_STATE_DATA; + break; + case NGHTTP3_FRAME_HEADERS: + rv = nghttp3_stream_transit_rx_http_state( + stream, NGHTTP3_HTTP_EVENT_HEADERS_BEGIN); + if (rv != 0) { + return rv; + } + if (rstate->left == 0) { + rv = nghttp3_stream_empty_headers_allowed(stream); + if (rv != 0) { + return rv; + } + + rv = nghttp3_stream_transit_rx_http_state( + stream, NGHTTP3_HTTP_EVENT_HEADERS_END); + assert(0 == rv); + + nghttp3_stream_read_state_reset(rstate); + break; + } + + switch (stream->rx.hstate) { + case NGHTTP3_HTTP_STATE_REQ_HEADERS_BEGIN: + case NGHTTP3_HTTP_STATE_RESP_HEADERS_BEGIN: + rv = conn_call_begin_headers(conn, stream); + break; + case NGHTTP3_HTTP_STATE_REQ_TRAILERS_BEGIN: + case NGHTTP3_HTTP_STATE_RESP_TRAILERS_BEGIN: + rv = conn_call_begin_trailers(conn, stream); + break; + default: + nghttp3_unreachable(); + } + + if (rv != 0) { + return rv; + } + + rstate->state = NGHTTP3_REQ_STREAM_STATE_HEADERS; + break; + case NGHTTP3_FRAME_PUSH_PROMISE: /* We do not support push */ + case NGHTTP3_FRAME_CANCEL_PUSH: + case NGHTTP3_FRAME_SETTINGS: + case NGHTTP3_FRAME_GOAWAY: + case NGHTTP3_FRAME_MAX_PUSH_ID: + case NGHTTP3_FRAME_PRIORITY_UPDATE: + case NGHTTP3_FRAME_PRIORITY_UPDATE_PUSH_ID: + case NGHTTP3_H2_FRAME_PRIORITY: + case NGHTTP3_H2_FRAME_PING: + case NGHTTP3_H2_FRAME_WINDOW_UPDATE: + case NGHTTP3_H2_FRAME_CONTINUATION: + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + default: + /* TODO Handle reserved frame type */ + busy = 1; + rstate->state = NGHTTP3_REQ_STREAM_STATE_IGN_FRAME; + break; + } + break; + case NGHTTP3_REQ_STREAM_STATE_DATA: + len = (size_t)nghttp3_min_int64(rstate->left, (int64_t)(end - p)); + rv = nghttp3_conn_on_data(conn, stream, p, len); + if (rv != 0) { + return rv; + } + p += len; + rstate->left -= (int64_t)len; + + if (rstate->left) { + goto almost_done; + } + + rv = nghttp3_stream_transit_rx_http_state(stream, + NGHTTP3_HTTP_EVENT_DATA_END); + assert(0 == rv); + + nghttp3_stream_read_state_reset(rstate); + break; + case NGHTTP3_REQ_STREAM_STATE_HEADERS: + len = (size_t)nghttp3_min_int64(rstate->left, (int64_t)(end - p)); + nread = nghttp3_conn_on_headers(conn, stream, p, len, + (int64_t)len == rstate->left); + if (nread < 0) { + if (nread == NGHTTP3_ERR_MALFORMED_HTTP_HEADER) { + goto http_header_error; + } + + return nread; + } + + p += nread; + nconsumed += (size_t)nread; + rstate->left -= nread; + + if (stream->flags & NGHTTP3_STREAM_FLAG_QPACK_DECODE_BLOCKED) { + if (p != end && nghttp3_stream_get_buffered_datalen(stream) == 0) { + rv = nghttp3_stream_buffer_data(stream, p, (size_t)(end - p)); + if (rv != 0) { + return rv; + } + } + *pnproc = (size_t)(p - src); + return (nghttp3_ssize)nconsumed; + } + + if (rstate->left) { + goto almost_done; + } + + switch (stream->rx.hstate) { + case NGHTTP3_HTTP_STATE_REQ_HEADERS_BEGIN: + rv = nghttp3_http_on_request_headers(&stream->rx.http); + break; + case NGHTTP3_HTTP_STATE_RESP_HEADERS_BEGIN: + rv = nghttp3_http_on_response_headers(&stream->rx.http); + break; + case NGHTTP3_HTTP_STATE_REQ_TRAILERS_BEGIN: + case NGHTTP3_HTTP_STATE_RESP_TRAILERS_BEGIN: + rv = 0; + break; + default: + nghttp3_unreachable(); + } + + if (rv != 0) { + if (rv == NGHTTP3_ERR_MALFORMED_HTTP_HEADER) { + goto http_header_error; + } + + return rv; + } + + switch (stream->rx.hstate) { + case NGHTTP3_HTTP_STATE_REQ_HEADERS_BEGIN: + /* Only server utilizes priority information to schedule + streams. */ + if (conn->server && + (stream->rx.http.flags & NGHTTP3_HTTP_FLAG_PRIORITY) && + !(stream->flags & NGHTTP3_STREAM_FLAG_PRIORITY_UPDATE_RECVED) && + !(stream->flags & NGHTTP3_STREAM_FLAG_SERVER_PRIORITY_SET)) { + rv = conn_update_stream_priority(conn, stream, &stream->rx.http.pri); + if (rv != 0) { + return rv; + } + } + /* fall through */ + case NGHTTP3_HTTP_STATE_RESP_HEADERS_BEGIN: + rv = conn_call_end_headers(conn, stream, p == end && fin); + break; + case NGHTTP3_HTTP_STATE_REQ_TRAILERS_BEGIN: + case NGHTTP3_HTTP_STATE_RESP_TRAILERS_BEGIN: + rv = conn_call_end_trailers(conn, stream, p == end && fin); + break; + default: + nghttp3_unreachable(); + } + + if (rv != 0) { + return rv; + } + + rv = nghttp3_stream_transit_rx_http_state(stream, + NGHTTP3_HTTP_EVENT_HEADERS_END); + assert(0 == rv); + + nghttp3_stream_read_state_reset(rstate); + + break; + + http_header_error: + stream->flags |= NGHTTP3_STREAM_FLAG_HTTP_ERROR; + + busy = 1; + rstate->state = NGHTTP3_REQ_STREAM_STATE_IGN_REST; + + rv = conn_call_stop_sending(conn, stream, NGHTTP3_H3_MESSAGE_ERROR); + if (rv != 0) { + return rv; + } + + rv = conn_call_reset_stream(conn, stream, NGHTTP3_H3_MESSAGE_ERROR); + if (rv != 0) { + return rv; + } + + break; + case NGHTTP3_REQ_STREAM_STATE_IGN_FRAME: + len = (size_t)nghttp3_min_int64(rstate->left, (int64_t)(end - p)); + p += len; + nconsumed += len; + rstate->left -= (int64_t)len; + + if (rstate->left) { + goto almost_done; + } + + nghttp3_stream_read_state_reset(rstate); + break; + case NGHTTP3_REQ_STREAM_STATE_IGN_REST: + nconsumed += (size_t)(end - p); + *pnproc = (size_t)(end - src); + return (nghttp3_ssize)nconsumed; + } + } + +almost_done: + if (fin) { + switch (rstate->state) { + case NGHTTP3_REQ_STREAM_STATE_FRAME_TYPE: + if (rvint->left) { + return NGHTTP3_ERR_H3_GENERAL_PROTOCOL_ERROR; + } + rv = nghttp3_stream_transit_rx_http_state(stream, + NGHTTP3_HTTP_EVENT_MSG_END); + if (rv != 0) { + return rv; + } + rv = conn_call_end_stream(conn, stream); + if (rv != 0) { + return rv; + } + break; + case NGHTTP3_REQ_STREAM_STATE_IGN_REST: + break; + default: + return NGHTTP3_ERR_H3_FRAME_ERROR; + } + } + + *pnproc = (size_t)(p - src); + return (nghttp3_ssize)nconsumed; +} + +int nghttp3_conn_on_data(nghttp3_conn *conn, nghttp3_stream *stream, + const uint8_t *data, size_t datalen) { + int rv; + + rv = nghttp3_http_on_data_chunk(stream, datalen); + if (rv != 0) { + return rv; + } + + if (!conn->callbacks.recv_data) { + return 0; + } + + rv = conn->callbacks.recv_data(conn, stream->node.id, data, datalen, + conn->user_data, stream->user_data); + if (rv != 0) { + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static nghttp3_pq *conn_get_sched_pq(nghttp3_conn *conn, nghttp3_tnode *tnode) { + assert(tnode->pri.urgency < NGHTTP3_URGENCY_LEVELS); + + return &conn->sched[tnode->pri.urgency].spq; +} + +static nghttp3_ssize conn_decode_headers(nghttp3_conn *conn, + nghttp3_stream *stream, + const uint8_t *src, size_t srclen, + int fin) { + nghttp3_ssize nread; + int rv; + nghttp3_qpack_decoder *qdec = &conn->qdec; + nghttp3_qpack_nv nv; + uint8_t flags; + nghttp3_buf buf; + nghttp3_recv_header recv_header = NULL; + nghttp3_http_state *http; + int request = 0; + int trailers = 0; + + switch (stream->rx.hstate) { + case NGHTTP3_HTTP_STATE_REQ_HEADERS_BEGIN: + request = 1; + /* Fall through */ + case NGHTTP3_HTTP_STATE_RESP_HEADERS_BEGIN: + recv_header = conn->callbacks.recv_header; + break; + case NGHTTP3_HTTP_STATE_REQ_TRAILERS_BEGIN: + request = 1; + /* Fall through */ + case NGHTTP3_HTTP_STATE_RESP_TRAILERS_BEGIN: + trailers = 1; + recv_header = conn->callbacks.recv_trailer; + break; + default: + nghttp3_unreachable(); + } + http = &stream->rx.http; + + nghttp3_buf_wrap_init(&buf, (uint8_t *)src, srclen); + buf.last = buf.end; + + for (;;) { + nread = + nghttp3_qpack_decoder_read_request(qdec, &stream->qpack_sctx, &nv, &flags, + buf.pos, nghttp3_buf_len(&buf), fin); + + if (nread < 0) { + return (int)nread; + } + + buf.pos += nread; + + if (flags & NGHTTP3_QPACK_DECODE_FLAG_BLOCKED) { + if (conn->local.settings.qpack_blocked_streams <= + nghttp3_pq_size(&conn->qpack_blocked_streams)) { + return NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + } + + stream->flags |= NGHTTP3_STREAM_FLAG_QPACK_DECODE_BLOCKED; + rv = nghttp3_conn_qpack_blocked_streams_push(conn, stream); + if (rv != 0) { + return rv; + } + break; + } + + if (flags & NGHTTP3_QPACK_DECODE_FLAG_FINAL) { + nghttp3_qpack_stream_context_reset(&stream->qpack_sctx); + break; + } + + if (nread == 0) { + break; + } + + if (flags & NGHTTP3_QPACK_DECODE_FLAG_EMIT) { + rv = nghttp3_http_on_header( + http, &nv, request, trailers, + conn->server && conn->local.settings.enable_connect_protocol); + switch (rv) { + case NGHTTP3_ERR_MALFORMED_HTTP_HEADER: + break; + case NGHTTP3_ERR_REMOVE_HTTP_HEADER: + rv = 0; + break; + case 0: + if (recv_header) { + rv = recv_header(conn, stream->node.id, nv.token, nv.name, nv.value, + nv.flags, conn->user_data, stream->user_data); + if (rv != 0) { + rv = NGHTTP3_ERR_CALLBACK_FAILURE; + } + } + break; + default: + nghttp3_unreachable(); + } + + nghttp3_rcbuf_decref(nv.name); + nghttp3_rcbuf_decref(nv.value); + + if (rv != 0) { + return rv; + } + } + } + + return buf.pos - src; +} + +nghttp3_ssize nghttp3_conn_on_headers(nghttp3_conn *conn, + nghttp3_stream *stream, + const uint8_t *src, size_t srclen, + int fin) { + if (srclen == 0 && !fin) { + return 0; + } + + return conn_decode_headers(conn, stream, src, srclen, fin); +} + +int nghttp3_conn_on_settings_entry_received(nghttp3_conn *conn, + const nghttp3_frame_settings *fr) { + const nghttp3_settings_entry *ent = &fr->iv[0]; + nghttp3_settings *dest = &conn->remote.settings; + + /* TODO Check for duplicates */ + switch (ent->id) { + case NGHTTP3_SETTINGS_ID_MAX_FIELD_SECTION_SIZE: + dest->max_field_section_size = ent->value; + break; + case NGHTTP3_SETTINGS_ID_QPACK_MAX_TABLE_CAPACITY: + if (dest->qpack_max_dtable_capacity != 0) { + return NGHTTP3_ERR_H3_SETTINGS_ERROR; + } + + if (ent->value == 0) { + break; + } + + dest->qpack_max_dtable_capacity = (size_t)ent->value; + + nghttp3_qpack_encoder_set_max_dtable_capacity(&conn->qenc, + (size_t)ent->value); + break; + case NGHTTP3_SETTINGS_ID_QPACK_BLOCKED_STREAMS: + if (dest->qpack_blocked_streams != 0) { + return NGHTTP3_ERR_H3_SETTINGS_ERROR; + } + + if (ent->value == 0) { + break; + } + + dest->qpack_blocked_streams = (size_t)ent->value; + + nghttp3_qpack_encoder_set_max_blocked_streams( + &conn->qenc, (size_t)nghttp3_min_uint64(100, ent->value)); + break; + case NGHTTP3_SETTINGS_ID_ENABLE_CONNECT_PROTOCOL: + if (!conn->server) { + break; + } + + switch (ent->value) { + case 0: + if (dest->enable_connect_protocol) { + return NGHTTP3_ERR_H3_SETTINGS_ERROR; + } + + break; + case 1: + break; + default: + return NGHTTP3_ERR_H3_SETTINGS_ERROR; + } + + dest->enable_connect_protocol = (uint8_t)ent->value; + break; + case NGHTTP3_SETTINGS_ID_H3_DATAGRAM: + switch (ent->value) { + case 0: + case 1: + break; + default: + return NGHTTP3_ERR_H3_SETTINGS_ERROR; + } + + dest->h3_datagram = (uint8_t)ent->value; + break; + case NGHTTP3_H2_SETTINGS_ID_ENABLE_PUSH: + case NGHTTP3_H2_SETTINGS_ID_MAX_CONCURRENT_STREAMS: + case NGHTTP3_H2_SETTINGS_ID_INITIAL_WINDOW_SIZE: + case NGHTTP3_H2_SETTINGS_ID_MAX_FRAME_SIZE: + return NGHTTP3_ERR_H3_SETTINGS_ERROR; + default: + /* Ignore unknown settings ID */ + break; + } + + return 0; +} + +static int +conn_on_priority_update_stream(nghttp3_conn *conn, + const nghttp3_frame_priority_update *fr) { + int64_t stream_id = fr->pri_elem_id; + nghttp3_stream *stream; + int rv; + + if (!nghttp3_client_stream_bidi(stream_id) || + nghttp3_ord_stream_id(stream_id) > conn->remote.bidi.max_client_streams) { + return NGHTTP3_ERR_H3_ID_ERROR; + } + + stream = nghttp3_conn_find_stream(conn, stream_id); + if (stream == NULL) { + if ((conn->flags & NGHTTP3_CONN_FLAG_GOAWAY_QUEUED) && + conn->tx.goaway_id <= stream_id) { + /* Connection is going down. Ignore priority signal. */ + return 0; + } + + rv = conn_bidi_idtr_open(conn, stream_id); + if (rv != 0) { + if (nghttp3_err_is_fatal(rv)) { + return rv; + } + + assert(rv == NGHTTP3_ERR_STREAM_IN_USE); + + /* The stream is gone. Just ignore. */ + return 0; + } + + conn->rx.max_stream_id_bidi = + nghttp3_max_int64(conn->rx.max_stream_id_bidi, stream_id); + rv = nghttp3_conn_create_stream(conn, &stream, stream_id); + if (rv != 0) { + return rv; + } + + stream->node.pri = fr->pri; + stream->flags |= NGHTTP3_STREAM_FLAG_PRIORITY_UPDATE_RECVED; + + return 0; + } + + if (stream->flags & NGHTTP3_STREAM_FLAG_SERVER_PRIORITY_SET) { + return 0; + } + + stream->flags |= NGHTTP3_STREAM_FLAG_PRIORITY_UPDATE_RECVED; + + return conn_update_stream_priority(conn, stream, &fr->pri); +} + +int nghttp3_conn_on_priority_update(nghttp3_conn *conn, + const nghttp3_frame_priority_update *fr) { + assert(conn->server); + assert(fr->hd.type == NGHTTP3_FRAME_PRIORITY_UPDATE); + + return conn_on_priority_update_stream(conn, fr); +} + +static int conn_stream_acked_data(nghttp3_stream *stream, int64_t stream_id, + uint64_t datalen, void *user_data) { + nghttp3_conn *conn = stream->conn; + int rv; + + if (!conn->callbacks.acked_stream_data) { + return 0; + } + + rv = conn->callbacks.acked_stream_data(conn, stream_id, datalen, + conn->user_data, user_data); + if (rv != 0) { + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +int nghttp3_conn_create_stream(nghttp3_conn *conn, nghttp3_stream **pstream, + int64_t stream_id) { + nghttp3_stream *stream; + int rv; + nghttp3_stream_callbacks callbacks = { + conn_stream_acked_data, + }; + + rv = nghttp3_stream_new(&stream, stream_id, &callbacks, + &conn->out_chunk_objalloc, &conn->stream_objalloc, + conn->mem); + if (rv != 0) { + return rv; + } + + stream->conn = conn; + + rv = nghttp3_map_insert(&conn->streams, (nghttp3_map_key_type)stream->node.id, + stream); + if (rv != 0) { + nghttp3_stream_del(stream); + return rv; + } + + if (conn->server && nghttp3_client_stream_bidi(stream_id)) { + ++conn->remote.bidi.num_streams; + } + + *pstream = stream; + + return 0; +} + +nghttp3_stream *nghttp3_conn_find_stream(nghttp3_conn *conn, + int64_t stream_id) { + return nghttp3_map_find(&conn->streams, (nghttp3_map_key_type)stream_id); +} + +int nghttp3_conn_bind_control_stream(nghttp3_conn *conn, int64_t stream_id) { + nghttp3_stream *stream; + nghttp3_frame_entry frent; + int rv; + + assert(!conn->server || nghttp3_server_stream_uni(stream_id)); + assert(conn->server || nghttp3_client_stream_uni(stream_id)); + + if (conn->tx.ctrl) { + return NGHTTP3_ERR_INVALID_STATE; + } + + rv = nghttp3_conn_create_stream(conn, &stream, stream_id); + if (rv != 0) { + return rv; + } + + stream->type = NGHTTP3_STREAM_TYPE_CONTROL; + + conn->tx.ctrl = stream; + + rv = nghttp3_stream_write_stream_type(stream); + if (rv != 0) { + return rv; + } + + frent.fr.hd.type = NGHTTP3_FRAME_SETTINGS; + frent.aux.settings.local_settings = &conn->local.settings; + + return nghttp3_stream_frq_add(stream, &frent); +} + +int nghttp3_conn_bind_qpack_streams(nghttp3_conn *conn, int64_t qenc_stream_id, + int64_t qdec_stream_id) { + nghttp3_stream *stream; + int rv; + + assert(!conn->server || nghttp3_server_stream_uni(qenc_stream_id)); + assert(!conn->server || nghttp3_server_stream_uni(qdec_stream_id)); + assert(conn->server || nghttp3_client_stream_uni(qenc_stream_id)); + assert(conn->server || nghttp3_client_stream_uni(qdec_stream_id)); + + if (conn->tx.qenc || conn->tx.qdec) { + return NGHTTP3_ERR_INVALID_STATE; + } + + rv = nghttp3_conn_create_stream(conn, &stream, qenc_stream_id); + if (rv != 0) { + return rv; + } + + stream->type = NGHTTP3_STREAM_TYPE_QPACK_ENCODER; + + conn->tx.qenc = stream; + + rv = nghttp3_stream_write_stream_type(stream); + if (rv != 0) { + return rv; + } + + rv = nghttp3_conn_create_stream(conn, &stream, qdec_stream_id); + if (rv != 0) { + return rv; + } + + stream->type = NGHTTP3_STREAM_TYPE_QPACK_DECODER; + + conn->tx.qdec = stream; + + return nghttp3_stream_write_stream_type(stream); +} + +static nghttp3_ssize conn_writev_stream(nghttp3_conn *conn, int64_t *pstream_id, + int *pfin, nghttp3_vec *vec, + size_t veccnt, nghttp3_stream *stream) { + int rv; + size_t n; + + assert(veccnt > 0); + + /* If stream is blocked by read callback, don't attempt to fill + more. */ + if (!(stream->flags & NGHTTP3_STREAM_FLAG_READ_DATA_BLOCKED)) { + rv = nghttp3_stream_fill_outq(stream); + if (rv != 0) { + return rv; + } + } + + if (!nghttp3_stream_uni(stream->node.id) && conn->tx.qenc && + !nghttp3_stream_is_blocked(conn->tx.qenc)) { + n = nghttp3_stream_writev(conn->tx.qenc, pfin, vec, veccnt); + if (n) { + *pstream_id = conn->tx.qenc->node.id; + return (nghttp3_ssize)n; + } + } + + n = nghttp3_stream_writev(stream, pfin, vec, veccnt); + /* We might just want to write stream fin without sending any stream + data. */ + if (n == 0 && *pfin == 0) { + return 0; + } + + *pstream_id = stream->node.id; + + return (nghttp3_ssize)n; +} + +nghttp3_ssize nghttp3_conn_writev_stream(nghttp3_conn *conn, + int64_t *pstream_id, int *pfin, + nghttp3_vec *vec, size_t veccnt) { + nghttp3_ssize ncnt; + nghttp3_stream *stream; + int rv; + + *pstream_id = -1; + *pfin = 0; + + if (veccnt == 0) { + return 0; + } + + if (conn->tx.ctrl && !nghttp3_stream_is_blocked(conn->tx.ctrl)) { + ncnt = + conn_writev_stream(conn, pstream_id, pfin, vec, veccnt, conn->tx.ctrl); + if (ncnt) { + return ncnt; + } + } + + if (conn->tx.qdec && !nghttp3_stream_is_blocked(conn->tx.qdec)) { + rv = nghttp3_stream_write_qpack_decoder_stream(conn->tx.qdec); + if (rv != 0) { + return rv; + } + + ncnt = + conn_writev_stream(conn, pstream_id, pfin, vec, veccnt, conn->tx.qdec); + if (ncnt) { + return ncnt; + } + } + + if (conn->tx.qenc && !nghttp3_stream_is_blocked(conn->tx.qenc)) { + ncnt = + conn_writev_stream(conn, pstream_id, pfin, vec, veccnt, conn->tx.qenc); + if (ncnt) { + return ncnt; + } + } + + stream = nghttp3_conn_get_next_tx_stream(conn); + if (stream == NULL) { + return 0; + } + + ncnt = conn_writev_stream(conn, pstream_id, pfin, vec, veccnt, stream); + if (ncnt < 0) { + return ncnt; + } + + if (nghttp3_client_stream_bidi(stream->node.id) && + !nghttp3_stream_require_schedule(stream)) { + nghttp3_conn_unschedule_stream(conn, stream); + } + + return ncnt; +} + +nghttp3_stream *nghttp3_conn_get_next_tx_stream(nghttp3_conn *conn) { + size_t i; + nghttp3_tnode *tnode; + nghttp3_pq *pq; + + for (i = 0; i < NGHTTP3_URGENCY_LEVELS; ++i) { + pq = &conn->sched[i].spq; + if (nghttp3_pq_empty(pq)) { + continue; + } + + tnode = nghttp3_struct_of(nghttp3_pq_top(pq), nghttp3_tnode, pe); + + return nghttp3_struct_of(tnode, nghttp3_stream, node); + } + + return NULL; +} + +int nghttp3_conn_add_write_offset(nghttp3_conn *conn, int64_t stream_id, + size_t n) { + nghttp3_stream *stream = nghttp3_conn_find_stream(conn, stream_id); + + if (stream == NULL) { + return 0; + } + + nghttp3_stream_add_outq_offset(stream, n); + + stream->unscheduled_nwrite += n; + + if (!nghttp3_client_stream_bidi(stream->node.id)) { + return 0; + } + + if (!nghttp3_stream_require_schedule(stream)) { + nghttp3_conn_unschedule_stream(conn, stream); + return 0; + } + + if (stream->unscheduled_nwrite < NGHTTP3_STREAM_MIN_WRITELEN) { + return 0; + } + + return nghttp3_conn_schedule_stream(conn, stream); +} + +int nghttp3_conn_add_ack_offset(nghttp3_conn *conn, int64_t stream_id, + uint64_t n) { + nghttp3_stream *stream = nghttp3_conn_find_stream(conn, stream_id); + + if (stream == NULL) { + return 0; + } + + return nghttp3_stream_update_ack_offset(stream, stream->ack_offset + n); +} + +int nghttp3_conn_update_ack_offset(nghttp3_conn *conn, int64_t stream_id, + uint64_t offset) { + nghttp3_stream *stream = nghttp3_conn_find_stream(conn, stream_id); + + if (stream == NULL) { + return 0; + } + + if (stream->ack_offset > offset) { + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + return nghttp3_stream_update_ack_offset(stream, offset); +} + +static int conn_submit_headers_data(nghttp3_conn *conn, nghttp3_stream *stream, + const nghttp3_nv *nva, size_t nvlen, + const nghttp3_data_reader *dr) { + int rv; + nghttp3_nv *nnva; + nghttp3_frame_entry frent = {0}; + + rv = nghttp3_nva_copy(&nnva, nva, nvlen, conn->mem); + if (rv != 0) { + return rv; + } + + frent.fr.hd.type = NGHTTP3_FRAME_HEADERS; + frent.fr.headers.nva = nnva; + frent.fr.headers.nvlen = nvlen; + + rv = nghttp3_stream_frq_add(stream, &frent); + if (rv != 0) { + nghttp3_nva_del(nnva, conn->mem); + return rv; + } + + if (dr) { + frent.fr.hd.type = NGHTTP3_FRAME_DATA; + frent.aux.data.dr = *dr; + + rv = nghttp3_stream_frq_add(stream, &frent); + if (rv != 0) { + return rv; + } + } + + if (nghttp3_stream_require_schedule(stream)) { + return nghttp3_conn_schedule_stream(conn, stream); + } + + return 0; +} + +int nghttp3_conn_schedule_stream(nghttp3_conn *conn, nghttp3_stream *stream) { + /* Assume that stream stays on the same urgency level */ + nghttp3_tnode *node = stream_get_sched_node(stream); + int rv; + + rv = nghttp3_tnode_schedule(node, conn_get_sched_pq(conn, node), + stream->unscheduled_nwrite); + if (rv != 0) { + return rv; + } + + stream->unscheduled_nwrite = 0; + + return 0; +} + +int nghttp3_conn_ensure_stream_scheduled(nghttp3_conn *conn, + nghttp3_stream *stream) { + if (nghttp3_tnode_is_scheduled(stream_get_sched_node(stream))) { + return 0; + } + + return nghttp3_conn_schedule_stream(conn, stream); +} + +void nghttp3_conn_unschedule_stream(nghttp3_conn *conn, + nghttp3_stream *stream) { + nghttp3_tnode *node = stream_get_sched_node(stream); + + nghttp3_tnode_unschedule(node, conn_get_sched_pq(conn, node)); +} + +int nghttp3_conn_submit_request(nghttp3_conn *conn, int64_t stream_id, + const nghttp3_nv *nva, size_t nvlen, + const nghttp3_data_reader *dr, + void *stream_user_data) { + nghttp3_stream *stream; + int rv; + + assert(!conn->server); + assert(conn->tx.qenc); + + assert(nghttp3_client_stream_bidi(stream_id)); + + /* TODO Should we check that stream_id is client stream_id? */ + /* TODO Check GOAWAY last stream ID */ + if (nghttp3_stream_uni(stream_id)) { + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + if (conn->flags & NGHTTP3_CONN_FLAG_GOAWAY_RECVED) { + return NGHTTP3_ERR_CONN_CLOSING; + } + + stream = nghttp3_conn_find_stream(conn, stream_id); + if (stream != NULL) { + return NGHTTP3_ERR_STREAM_IN_USE; + } + + rv = nghttp3_conn_create_stream(conn, &stream, stream_id); + if (rv != 0) { + return rv; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_INITIAL; + stream->tx.hstate = NGHTTP3_HTTP_STATE_REQ_END; + stream->user_data = stream_user_data; + + nghttp3_http_record_request_method(stream, nva, nvlen); + + if (dr == NULL) { + stream->flags |= NGHTTP3_STREAM_FLAG_WRITE_END_STREAM; + } + + return conn_submit_headers_data(conn, stream, nva, nvlen, dr); +} + +int nghttp3_conn_submit_info(nghttp3_conn *conn, int64_t stream_id, + const nghttp3_nv *nva, size_t nvlen) { + nghttp3_stream *stream; + + /* TODO Verify that it is allowed to send info (non-final response) + now. */ + assert(conn->server); + assert(conn->tx.qenc); + + stream = nghttp3_conn_find_stream(conn, stream_id); + if (stream == NULL) { + return NGHTTP3_ERR_STREAM_NOT_FOUND; + } + + return conn_submit_headers_data(conn, stream, nva, nvlen, NULL); +} + +int nghttp3_conn_submit_response(nghttp3_conn *conn, int64_t stream_id, + const nghttp3_nv *nva, size_t nvlen, + const nghttp3_data_reader *dr) { + nghttp3_stream *stream; + + /* TODO Verify that it is allowed to send response now. */ + assert(conn->server); + assert(conn->tx.qenc); + + stream = nghttp3_conn_find_stream(conn, stream_id); + if (stream == NULL) { + return NGHTTP3_ERR_STREAM_NOT_FOUND; + } + + if (dr == NULL) { + stream->flags |= NGHTTP3_STREAM_FLAG_WRITE_END_STREAM; + } + + return conn_submit_headers_data(conn, stream, nva, nvlen, dr); +} + +int nghttp3_conn_submit_trailers(nghttp3_conn *conn, int64_t stream_id, + const nghttp3_nv *nva, size_t nvlen) { + nghttp3_stream *stream; + + /* TODO Verify that it is allowed to send trailer now. */ + assert(conn->tx.qenc); + + stream = nghttp3_conn_find_stream(conn, stream_id); + if (stream == NULL) { + return NGHTTP3_ERR_STREAM_NOT_FOUND; + } + + if (stream->flags & NGHTTP3_STREAM_FLAG_WRITE_END_STREAM) { + return NGHTTP3_ERR_INVALID_STATE; + } + + stream->flags |= NGHTTP3_STREAM_FLAG_WRITE_END_STREAM; + + return conn_submit_headers_data(conn, stream, nva, nvlen, NULL); +} + +int nghttp3_conn_submit_shutdown_notice(nghttp3_conn *conn) { + nghttp3_frame_entry frent = {0}; + int rv; + + assert(conn->tx.ctrl); + + frent.fr.hd.type = NGHTTP3_FRAME_GOAWAY; + frent.fr.goaway.id = conn->server ? NGHTTP3_SHUTDOWN_NOTICE_STREAM_ID + : NGHTTP3_SHUTDOWN_NOTICE_PUSH_ID; + + assert(frent.fr.goaway.id <= conn->tx.goaway_id); + + rv = nghttp3_stream_frq_add(conn->tx.ctrl, &frent); + if (rv != 0) { + return rv; + } + + conn->tx.goaway_id = frent.fr.goaway.id; + conn->flags |= NGHTTP3_CONN_FLAG_GOAWAY_QUEUED; + + return 0; +} + +int nghttp3_conn_shutdown(nghttp3_conn *conn) { + nghttp3_frame_entry frent = {0}; + int rv; + + assert(conn->tx.ctrl); + + frent.fr.hd.type = NGHTTP3_FRAME_GOAWAY; + if (conn->server) { + frent.fr.goaway.id = + nghttp3_min_int64((1ll << 62) - 4, conn->rx.max_stream_id_bidi + 4); + } else { + frent.fr.goaway.id = 0; + } + + assert(frent.fr.goaway.id <= conn->tx.goaway_id); + + rv = nghttp3_stream_frq_add(conn->tx.ctrl, &frent); + if (rv != 0) { + return rv; + } + + conn->tx.goaway_id = frent.fr.goaway.id; + conn->flags |= + NGHTTP3_CONN_FLAG_GOAWAY_QUEUED | NGHTTP3_CONN_FLAG_SHUTDOWN_COMMENCED; + + return 0; +} + +int nghttp3_conn_reject_stream(nghttp3_conn *conn, nghttp3_stream *stream) { + int rv; + + rv = conn_call_stop_sending(conn, stream, NGHTTP3_H3_REQUEST_REJECTED); + if (rv != 0) { + return rv; + } + + return conn_call_reset_stream(conn, stream, NGHTTP3_H3_REQUEST_REJECTED); +} + +void nghttp3_conn_block_stream(nghttp3_conn *conn, int64_t stream_id) { + nghttp3_stream *stream = nghttp3_conn_find_stream(conn, stream_id); + + if (stream == NULL) { + return; + } + + stream->flags |= NGHTTP3_STREAM_FLAG_FC_BLOCKED; + stream->unscheduled_nwrite = 0; + + if (nghttp3_client_stream_bidi(stream->node.id)) { + nghttp3_conn_unschedule_stream(conn, stream); + } +} + +void nghttp3_conn_shutdown_stream_write(nghttp3_conn *conn, int64_t stream_id) { + nghttp3_stream *stream = nghttp3_conn_find_stream(conn, stream_id); + + if (stream == NULL) { + return; + } + + stream->flags |= NGHTTP3_STREAM_FLAG_SHUT_WR; + stream->unscheduled_nwrite = 0; + + if (nghttp3_client_stream_bidi(stream->node.id)) { + nghttp3_conn_unschedule_stream(conn, stream); + } +} + +int nghttp3_conn_unblock_stream(nghttp3_conn *conn, int64_t stream_id) { + nghttp3_stream *stream = nghttp3_conn_find_stream(conn, stream_id); + + if (stream == NULL) { + return 0; + } + + stream->flags &= (uint16_t)~NGHTTP3_STREAM_FLAG_FC_BLOCKED; + + if (nghttp3_client_stream_bidi(stream->node.id) && + nghttp3_stream_require_schedule(stream)) { + return nghttp3_conn_ensure_stream_scheduled(conn, stream); + } + + return 0; +} + +int nghttp3_conn_is_stream_writable(nghttp3_conn *conn, int64_t stream_id) { + nghttp3_stream *stream = nghttp3_conn_find_stream(conn, stream_id); + + if (stream == NULL) { + return 0; + } + + return (stream->flags & + (NGHTTP3_STREAM_FLAG_FC_BLOCKED | + NGHTTP3_STREAM_FLAG_READ_DATA_BLOCKED | NGHTTP3_STREAM_FLAG_SHUT_WR | + NGHTTP3_STREAM_FLAG_CLOSED)) == 0; +} + +int nghttp3_conn_resume_stream(nghttp3_conn *conn, int64_t stream_id) { + nghttp3_stream *stream = nghttp3_conn_find_stream(conn, stream_id); + + if (stream == NULL) { + return 0; + } + + stream->flags &= (uint16_t)~NGHTTP3_STREAM_FLAG_READ_DATA_BLOCKED; + + if (nghttp3_client_stream_bidi(stream->node.id) && + nghttp3_stream_require_schedule(stream)) { + return nghttp3_conn_ensure_stream_scheduled(conn, stream); + } + + return 0; +} + +int nghttp3_conn_close_stream(nghttp3_conn *conn, int64_t stream_id, + uint64_t app_error_code) { + nghttp3_stream *stream = nghttp3_conn_find_stream(conn, stream_id); + + if (stream == NULL) { + return NGHTTP3_ERR_STREAM_NOT_FOUND; + } + + if (nghttp3_stream_uni(stream_id) && + stream->type != NGHTTP3_STREAM_TYPE_UNKNOWN) { + return NGHTTP3_ERR_H3_CLOSED_CRITICAL_STREAM; + } + + stream->error_code = app_error_code; + + nghttp3_conn_unschedule_stream(conn, stream); + + if (stream->qpack_blocked_pe.index == NGHTTP3_PQ_BAD_INDEX) { + return conn_delete_stream(conn, stream); + } + + stream->flags |= NGHTTP3_STREAM_FLAG_CLOSED; + return 0; +} + +int nghttp3_conn_shutdown_stream_read(nghttp3_conn *conn, int64_t stream_id) { + nghttp3_stream *stream; + + if (!nghttp3_client_stream_bidi(stream_id)) { + return 0; + } + + stream = nghttp3_conn_find_stream(conn, stream_id); + if (stream) { + if (stream->flags & NGHTTP3_STREAM_FLAG_SHUT_RD) { + return 0; + } + + stream->flags |= NGHTTP3_STREAM_FLAG_SHUT_RD; + } + + return nghttp3_qpack_decoder_cancel_stream(&conn->qdec, stream_id); +} + +int nghttp3_conn_qpack_blocked_streams_push(nghttp3_conn *conn, + nghttp3_stream *stream) { + assert(stream->qpack_blocked_pe.index == NGHTTP3_PQ_BAD_INDEX); + + return nghttp3_pq_push(&conn->qpack_blocked_streams, + &stream->qpack_blocked_pe); +} + +void nghttp3_conn_qpack_blocked_streams_pop(nghttp3_conn *conn) { + assert(!nghttp3_pq_empty(&conn->qpack_blocked_streams)); + nghttp3_pq_pop(&conn->qpack_blocked_streams); +} + +void nghttp3_conn_set_max_client_streams_bidi(nghttp3_conn *conn, + uint64_t max_streams) { + assert(conn->server); + assert(conn->remote.bidi.max_client_streams <= max_streams); + + conn->remote.bidi.max_client_streams = max_streams; +} + +void nghttp3_conn_set_max_concurrent_streams(nghttp3_conn *conn, + size_t max_concurrent_streams) { + nghttp3_qpack_decoder_set_max_concurrent_streams(&conn->qdec, + max_concurrent_streams); +} + +int nghttp3_conn_set_stream_user_data(nghttp3_conn *conn, int64_t stream_id, + void *stream_user_data) { + nghttp3_stream *stream = nghttp3_conn_find_stream(conn, stream_id); + + if (stream == NULL) { + return NGHTTP3_ERR_STREAM_NOT_FOUND; + } + + stream->user_data = stream_user_data; + + return 0; +} + +uint64_t nghttp3_conn_get_frame_payload_left(nghttp3_conn *conn, + int64_t stream_id) { + nghttp3_stream *stream; + int uni = 0; + + if (!nghttp3_client_stream_bidi(stream_id)) { + uni = conn_remote_stream_uni(conn, stream_id); + if (!uni) { + return 0; + } + } + + stream = nghttp3_conn_find_stream(conn, stream_id); + if (stream == NULL) { + return 0; + } + + if (uni && stream->type != NGHTTP3_STREAM_TYPE_CONTROL) { + return 0; + } + + return (uint64_t)stream->rstate.left; +} + +int nghttp3_conn_get_stream_priority_versioned(nghttp3_conn *conn, + int pri_version, + nghttp3_pri *dest, + int64_t stream_id) { + nghttp3_stream *stream; + (void)pri_version; + + assert(conn->server); + + if (!nghttp3_client_stream_bidi(stream_id)) { + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + stream = nghttp3_conn_find_stream(conn, stream_id); + if (stream == NULL) { + return NGHTTP3_ERR_STREAM_NOT_FOUND; + } + + *dest = stream->node.pri; + + return 0; +} + +int nghttp3_conn_set_client_stream_priority(nghttp3_conn *conn, + int64_t stream_id, + const uint8_t *data, + size_t datalen) { + nghttp3_stream *stream; + nghttp3_frame_entry frent = {0}; + uint8_t *buf = NULL; + + assert(!conn->server); + + if (!nghttp3_client_stream_bidi(stream_id)) { + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + stream = nghttp3_conn_find_stream(conn, stream_id); + if (stream == NULL) { + return NGHTTP3_ERR_STREAM_NOT_FOUND; + } + + if (datalen) { + buf = nghttp3_mem_malloc(conn->mem, datalen); + if (buf == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + memcpy(buf, data, datalen); + } + + frent.fr.hd.type = NGHTTP3_FRAME_PRIORITY_UPDATE; + frent.fr.priority_update.pri_elem_id = stream_id; + frent.fr.priority_update.data = buf; + frent.fr.priority_update.datalen = datalen; + + return nghttp3_stream_frq_add(conn->tx.ctrl, &frent); +} + +int nghttp3_conn_set_server_stream_priority_versioned(nghttp3_conn *conn, + int64_t stream_id, + int pri_version, + const nghttp3_pri *pri) { + nghttp3_stream *stream; + (void)pri_version; + + assert(conn->server); + assert(pri->urgency < NGHTTP3_URGENCY_LEVELS); + assert(pri->inc == 0 || pri->inc == 1); + + if (!nghttp3_client_stream_bidi(stream_id)) { + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + stream = nghttp3_conn_find_stream(conn, stream_id); + if (stream == NULL) { + return NGHTTP3_ERR_STREAM_NOT_FOUND; + } + + stream->flags |= NGHTTP3_STREAM_FLAG_SERVER_PRIORITY_SET; + + return conn_update_stream_priority(conn, stream, pri); +} + +int nghttp3_conn_is_drained(nghttp3_conn *conn) { + assert(conn->server); + + return (conn->flags & NGHTTP3_CONN_FLAG_SHUTDOWN_COMMENCED) && + conn->remote.bidi.num_streams == 0 && + nghttp3_stream_outq_write_done(conn->tx.ctrl) && + nghttp3_ringbuf_len(&conn->tx.ctrl->frq) == 0; +} + +void nghttp3_settings_default_versioned(int settings_version, + nghttp3_settings *settings) { + (void)settings_version; + + memset(settings, 0, sizeof(nghttp3_settings)); + settings->max_field_section_size = NGHTTP3_VARINT_MAX; + settings->qpack_encoder_max_dtable_capacity = + NGHTTP3_QPACK_ENCODER_MAX_DTABLE_CAPACITY; +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_conn.h b/contrib/libs/nghttp3/lib/nghttp3_conn.h new file mode 100644 index 0000000000..1218ba508b --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_conn.h @@ -0,0 +1,207 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_CONN_H +#define NGHTTP3_CONN_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_stream.h" +#include "nghttp3_map.h" +#include "nghttp3_qpack.h" +#include "nghttp3_tnode.h" +#include "nghttp3_idtr.h" +#include "nghttp3_gaptr.h" + +#define NGHTTP3_VARINT_MAX ((1ull << 62) - 1) + +/* NGHTTP3_QPACK_ENCODER_MAX_TABLE_CAPACITY is the maximum dynamic + table size for QPACK encoder. */ +#define NGHTTP3_QPACK_ENCODER_MAX_TABLE_CAPACITY 16384 + +/* NGHTTP3_QPACK_ENCODER_MAX_BLOCK_STREAMS is the maximum number of + blocked streams for QPACK encoder. */ +#define NGHTTP3_QPACK_ENCODER_MAX_BLOCK_STREAMS 100 + +/* NGHTTP3_CONN_FLAG_NONE indicates that no flag is set. */ +#define NGHTTP3_CONN_FLAG_NONE 0x0000u +/* NGHTTP3_CONN_FLAG_SETTINGS_RECVED is set when SETTINGS frame has + been received. */ +#define NGHTTP3_CONN_FLAG_SETTINGS_RECVED 0x0001u +/* NGHTTP3_CONN_FLAG_CONTROL_OPENED is set when a control stream has + opened. */ +#define NGHTTP3_CONN_FLAG_CONTROL_OPENED 0x0002u +/* NGHTTP3_CONN_FLAG_QPACK_ENCODER_OPENED is set when a QPACK encoder + stream has opened. */ +#define NGHTTP3_CONN_FLAG_QPACK_ENCODER_OPENED 0x0004u +/* NGHTTP3_CONN_FLAG_QPACK_DECODER_OPENED is set when a QPACK decoder + stream has opened. */ +#define NGHTTP3_CONN_FLAG_QPACK_DECODER_OPENED 0x0008u +/* NGHTTP3_CONN_FLAG_SHUTDOWN_COMMENCED is set when graceful shutdown + has started. */ +#define NGHTTP3_CONN_FLAG_SHUTDOWN_COMMENCED 0x0010u +/* NGHTTP3_CONN_FLAG_GOAWAY_RECVED indicates that GOAWAY frame has + received. */ +#define NGHTTP3_CONN_FLAG_GOAWAY_RECVED 0x0020u +/* NGHTTP3_CONN_FLAG_GOAWAY_QUEUED indicates that GOAWAY frame has + been submitted for transmission. */ +#define NGHTTP3_CONN_FLAG_GOAWAY_QUEUED 0x0040u + +typedef struct nghttp3_chunk { + nghttp3_opl_entry oplent; +} nghttp3_chunk; + +nghttp3_objalloc_decl(chunk, nghttp3_chunk, oplent); + +struct nghttp3_conn { + nghttp3_objalloc out_chunk_objalloc; + nghttp3_objalloc stream_objalloc; + nghttp3_callbacks callbacks; + nghttp3_map streams; + nghttp3_qpack_decoder qdec; + nghttp3_qpack_encoder qenc; + nghttp3_pq qpack_blocked_streams; + struct { + nghttp3_pq spq; + } sched[NGHTTP3_URGENCY_LEVELS]; + const nghttp3_mem *mem; + void *user_data; + int server; + uint16_t flags; + + struct { + nghttp3_settings settings; + struct { + /* max_pushes is the number of push IDs that local endpoint can + issue. This field is used by server only and used just for + validation */ + uint64_t max_pushes; + } uni; + } local; + + struct { + struct { + nghttp3_idtr idtr; + /* max_client_streams is the cumulative number of client + initiated bidirectional stream ID the remote endpoint can + issue. This field is used on server side only. */ + uint64_t max_client_streams; + /* num_streams is the number of client initiated bidirectional + streams that are currently open. This field is for server + use only. */ + size_t num_streams; + } bidi; + nghttp3_settings settings; + } remote; + + struct { + /* goaway_id is the latest ID received in GOAWAY frame. */ + int64_t goaway_id; + + int64_t max_stream_id_bidi; + + /* pri_fieldbuf is a buffer to store incoming Priority Field Value + in PRIORITY_UPDATE frame. */ + uint8_t pri_fieldbuf[8]; + /* pri_fieldlen is the number of bytes written into + pri_fieldbuf. */ + size_t pri_fieldbuflen; + } rx; + + struct { + struct { + nghttp3_buf rbuf; + nghttp3_buf ebuf; + } qpack; + nghttp3_stream *ctrl; + nghttp3_stream *qenc; + nghttp3_stream *qdec; + /* goaway_id is the latest ID sent in GOAWAY frame. */ + int64_t goaway_id; + } tx; +}; + +nghttp3_stream *nghttp3_conn_find_stream(nghttp3_conn *conn, int64_t stream_id); + +int nghttp3_conn_create_stream(nghttp3_conn *conn, nghttp3_stream **pstream, + int64_t stream_id); + +nghttp3_ssize nghttp3_conn_read_bidi(nghttp3_conn *conn, size_t *pnproc, + nghttp3_stream *stream, const uint8_t *src, + size_t srclen, int fin); + +nghttp3_ssize nghttp3_conn_read_uni(nghttp3_conn *conn, nghttp3_stream *stream, + const uint8_t *src, size_t srclen, int fin); + +nghttp3_ssize nghttp3_conn_read_control(nghttp3_conn *conn, + nghttp3_stream *stream, + const uint8_t *src, size_t srclen); + +nghttp3_ssize nghttp3_conn_read_qpack_encoder(nghttp3_conn *conn, + const uint8_t *src, + size_t srclen); + +nghttp3_ssize nghttp3_conn_read_qpack_decoder(nghttp3_conn *conn, + const uint8_t *src, + size_t srclen); + +int nghttp3_conn_on_data(nghttp3_conn *conn, nghttp3_stream *stream, + const uint8_t *data, size_t datalen); + +int nghttp3_conn_on_priority_update(nghttp3_conn *conn, + const nghttp3_frame_priority_update *fr); + +nghttp3_ssize nghttp3_conn_on_headers(nghttp3_conn *conn, + nghttp3_stream *stream, + const uint8_t *data, size_t datalen, + int fin); + +int nghttp3_conn_on_settings_entry_received(nghttp3_conn *conn, + const nghttp3_frame_settings *fr); + +int nghttp3_conn_qpack_blocked_streams_push(nghttp3_conn *conn, + nghttp3_stream *stream); + +void nghttp3_conn_qpack_blocked_streams_pop(nghttp3_conn *conn); + +int nghttp3_conn_schedule_stream(nghttp3_conn *conn, nghttp3_stream *stream); + +int nghttp3_conn_ensure_stream_scheduled(nghttp3_conn *conn, + nghttp3_stream *stream); + +void nghttp3_conn_unschedule_stream(nghttp3_conn *conn, nghttp3_stream *stream); + +int nghttp3_conn_reject_stream(nghttp3_conn *conn, nghttp3_stream *stream); + +/* + * nghttp3_conn_get_next_tx_stream returns next stream to send. It + * returns NULL if there is no such stream. + */ +nghttp3_stream *nghttp3_conn_get_next_tx_stream(nghttp3_conn *conn); + +#endif /* !defined(NGHTTP3_CONN_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_conv.c b/contrib/libs/nghttp3/lib/nghttp3_conv.c new file mode 100644 index 0000000000..6439a6d782 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_conv.c @@ -0,0 +1,128 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_conv.h" + +#include <string.h> +#include <assert.h> + +#include "nghttp3_str.h" +#include "nghttp3_unreachable.h" + +const uint8_t *nghttp3_get_varint(int64_t *dest, const uint8_t *p) { + union { + uint8_t n8; + uint16_t n16; + uint32_t n32; + uint64_t n64; + } n; + + switch (*p >> 6) { + case 0: + *dest = *p++; + return p; + case 1: + memcpy(&n, p, 2); + n.n8 &= 0x3f; + *dest = ntohs(n.n16); + + return p + 2; + case 2: + memcpy(&n, p, 4); + n.n8 &= 0x3f; + *dest = ntohl(n.n32); + + return p + 4; + case 3: + memcpy(&n, p, 8); + n.n8 &= 0x3f; + *dest = (int64_t)nghttp3_ntohl64(n.n64); + + return p + 8; + default: + nghttp3_unreachable(); + } +} + +int64_t nghttp3_get_varint_fb(const uint8_t *p) { return *p & 0x3f; } + +size_t nghttp3_get_varintlen(const uint8_t *p) { + return (size_t)(1u << (*p >> 6)); +} + +uint8_t *nghttp3_put_uint64be(uint8_t *p, uint64_t n) { + n = nghttp3_htonl64(n); + return nghttp3_cpymem(p, (const uint8_t *)&n, sizeof(n)); +} + +uint8_t *nghttp3_put_uint32be(uint8_t *p, uint32_t n) { + n = htonl(n); + return nghttp3_cpymem(p, (const uint8_t *)&n, sizeof(n)); +} + +uint8_t *nghttp3_put_uint16be(uint8_t *p, uint16_t n) { + n = htons(n); + return nghttp3_cpymem(p, (const uint8_t *)&n, sizeof(n)); +} + +uint8_t *nghttp3_put_varint(uint8_t *p, int64_t n) { + uint8_t *rv; + if (n < 64) { + *p++ = (uint8_t)n; + return p; + } + if (n < 16384) { + rv = nghttp3_put_uint16be(p, (uint16_t)n); + *p |= 0x40; + return rv; + } + if (n < 1073741824) { + rv = nghttp3_put_uint32be(p, (uint32_t)n); + *p |= 0x80; + return rv; + } + assert(n < 4611686018427387904LL); + rv = nghttp3_put_uint64be(p, (uint64_t)n); + *p |= 0xc0; + return rv; +} + +size_t nghttp3_put_varintlen(int64_t n) { + if (n < 64) { + return 1; + } + if (n < 16384) { + return 2; + } + if (n < 1073741824) { + return 4; + } + assert(n < 4611686018427387904LL); + return 8; +} + +uint64_t nghttp3_ord_stream_id(int64_t stream_id) { + return (uint64_t)(stream_id >> 2) + 1; +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_conv.h b/contrib/libs/nghttp3/lib/nghttp3_conv.h new file mode 100644 index 0000000000..40f5d4de78 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_conv.h @@ -0,0 +1,194 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_CONV_H +#define NGHTTP3_CONV_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif /* defined(HAVE_ARPA_INET_H) */ + +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif /* defined(HAVE_NETINET_IN_H) */ + +#ifdef HAVE_BYTESWAP_H +# include <byteswap.h> +#endif /* defined(HAVE_BYTESWAP_H) */ + +#ifdef HAVE_ENDIAN_H +# include <endian.h> +#endif /* defined(HAVE_ENDIAN_H) */ + +#ifdef HAVE_SYS_ENDIAN_H +# include <sys/endian.h> +#endif /* defined(HAVE_SYS_ENDIAN_H) */ + +#ifdef __APPLE__ +# include <libkern/OSByteOrder.h> +#endif /* defined(__APPLE__) */ + +#include <nghttp3/nghttp3.h> + +#if HAVE_DECL_BE64TOH +# define nghttp3_ntohl64(N) be64toh(N) +# define nghttp3_htonl64(N) htobe64(N) +#else /* !HAVE_DECL_BE64TOH */ +# ifdef WORDS_BIGENDIAN +# define nghttp3_ntohl64(N) (N) +# define nghttp3_htonl64(N) (N) +# else /* !defined(WORDS_BIGENDIAN) */ +# if HAVE_DECL_BSWAP_64 +# define nghttp3_bswap64 bswap_64 +# elif defined(WIN32) +# define nghttp3_bswap64 _byteswap_uint64 +# elif defined(__APPLE__) +# define nghttp3_bswap64 OSSwapInt64 +# else /* !(HAVE_DECL_BSWAP_64 || defined(WIN32) || defined(__APPLE__)) */ +# define nghttp3_bswap64(N) \ + ((uint64_t)(ntohl((uint32_t)(N))) << 32 | ntohl((uint32_t)((N) >> 32))) +# endif /* !(HAVE_DECL_BSWAP_64 || defined(WIN32) || defined(__APPLE__)) */ +# define nghttp3_ntohl64(N) nghttp3_bswap64(N) +# define nghttp3_htonl64(N) nghttp3_bswap64(N) +# endif /* !defined(WORDS_BIGENDIAN) */ +#endif /* !HAVE_DECL_BE64TOH */ + +#ifdef WIN32 +/* Windows requires ws2_32 library for ntonl family of functions. We + define inline functions for those functions so that we don't have + dependency on that lib. */ + +# ifdef _MSC_VER +# define STIN static __inline +# else /* !defined(_MSC_VER) */ +# define STIN static inline +# endif /* !defined(_MSC_VER) */ + +STIN uint32_t htonl(uint32_t hostlong) { + uint32_t res; + unsigned char *p = (unsigned char *)&res; + *p++ = (unsigned char)(hostlong >> 24); + *p++ = (hostlong >> 16) & 0xffu; + *p++ = (hostlong >> 8) & 0xffu; + *p = hostlong & 0xffu; + return res; +} + +STIN uint16_t htons(uint16_t hostshort) { + uint16_t res; + unsigned char *p = (unsigned char *)&res; + *p++ = (unsigned char)(hostshort >> 8); + *p = hostshort & 0xffu; + return res; +} + +STIN uint32_t ntohl(uint32_t netlong) { + uint32_t res; + unsigned char *p = (unsigned char *)&netlong; + res = (uint32_t)(*p++ << 24); + res += (uint32_t)(*p++ << 16); + res += (uint32_t)(*p++ << 8); + res += *p; + return res; +} + +STIN uint16_t ntohs(uint16_t netshort) { + uint16_t res; + unsigned char *p = (unsigned char *)&netshort; + res = (uint16_t)(*p++ << 8); + res += *p; + return res; +} + +#endif /* defined(WIN32) */ + +/* + * nghttp3_get_varint reads variable-length unsigned integer from |p|, + * and stores it in the buffer pointed by |dest| in host byte order. + * It returns |p| plus the number of bytes read from |p|. + */ +const uint8_t *nghttp3_get_varint(int64_t *dest, const uint8_t *p); + +/* + * nghttp3_get_varint_fb reads first byte of encoded variable-length + * integer from |p|. + */ +int64_t nghttp3_get_varint_fb(const uint8_t *p); + +/* + * nghttp3_get_varintlen returns the required number of bytes to read + * variable-length integer starting at |p|. + */ +size_t nghttp3_get_varintlen(const uint8_t *p); + +/* + * nghttp3_put_uint64be writes |n| in host byte order in |p| in + * network byte order. It returns the one beyond of the last written + * position. + */ +uint8_t *nghttp3_put_uint64be(uint8_t *p, uint64_t n); + +/* + * nghttp3_put_uint32be writes |n| in host byte order in |p| in + * network byte order. It returns the one beyond of the last written + * position. + */ +uint8_t *nghttp3_put_uint32be(uint8_t *p, uint32_t n); + +/* + * nghttp3_put_uint16be writes |n| in host byte order in |p| in + * network byte order. It returns the one beyond of the last written + * position. + */ +uint8_t *nghttp3_put_uint16be(uint8_t *p, uint16_t n); + +/* + * nghttp3_put_varint writes |n| in |p| using variable-length integer + * encoding. It returns the one beyond of the last written position. + */ +uint8_t *nghttp3_put_varint(uint8_t *p, int64_t n); + +/* + * nghttp3_put_varintlen returns the required number of bytes to + * encode |n|. + */ +size_t nghttp3_put_varintlen(int64_t n); + +/* + * nghttp3_ord_stream_id returns the ordinal number of |stream_id|. + */ +uint64_t nghttp3_ord_stream_id(int64_t stream_id); + +/* + * NGHTTP3_PRI_INC_MASK is a bit mask to retrieve incremental bit from + * a value produced by nghttp3_pri_to_uint8. + */ +#define NGHTTP3_PRI_INC_MASK (1 << 7) + +#endif /* !defined(NGHTTP3_CONV_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_debug.c b/contrib/libs/nghttp3/lib/nghttp3_debug.c new file mode 100644 index 0000000000..0235217e96 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_debug.c @@ -0,0 +1,61 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2016 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_debug.h" + +#include <stdio.h> + +#ifdef DEBUGBUILD + +static void nghttp3_default_debug_vfprintf_callback(const char *fmt, + va_list args) { + vfprintf(stderr, fmt, args); +} + +static nghttp3_debug_vprintf_callback static_debug_vprintf_callback = + nghttp3_default_debug_vfprintf_callback; + +void nghttp3_debug_vprintf(const char *format, ...) { + if (static_debug_vprintf_callback) { + va_list args; + va_start(args, format); + static_debug_vprintf_callback(format, args); + va_end(args); + } +} + +void nghttp3_set_debug_vprintf_callback( + nghttp3_debug_vprintf_callback debug_vprintf_callback) { + static_debug_vprintf_callback = debug_vprintf_callback; +} + +#else /* !defined(DEBUGBUILD) */ + +void nghttp3_set_debug_vprintf_callback( + nghttp3_debug_vprintf_callback debug_vprintf_callback) { + (void)debug_vprintf_callback; +} + +#endif /* !defined(DEBUGBUILD) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_debug.h b/contrib/libs/nghttp3/lib/nghttp3_debug.h new file mode 100644 index 0000000000..d73bf8ecf3 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_debug.h @@ -0,0 +1,44 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2016 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_DEBUG_H +#define NGHTTP3_DEBUG_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#ifdef DEBUGBUILD +# define DEBUGF(...) nghttp3_debug_vprintf(__VA_ARGS__) +void nghttp3_debug_vprintf(const char *format, ...); +#else /* !defined(DEBUGBUILD) */ +# define DEBUGF(...) \ + do { \ + } while (0) +#endif /* !defined(DEBUGBUILD) */ + +#endif /* !defined(NGHTTP3_DEBUG_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_err.c b/contrib/libs/nghttp3/lib/nghttp3_err.c new file mode 100644 index 0000000000..0d596bfab6 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_err.c @@ -0,0 +1,127 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_err.h" + +const char *nghttp3_strerror(int liberr) { + switch (liberr) { + case NGHTTP3_ERR_INVALID_ARGUMENT: + return "ERR_INVALID_ARGUMENT"; + case NGHTTP3_ERR_INVALID_STATE: + return "ERR_INVALID_STATE"; + case NGHTTP3_ERR_WOULDBLOCK: + return "ERR_WOULDBLOCK"; + case NGHTTP3_ERR_STREAM_IN_USE: + return "ERR_STREAM_IN_USE"; + case NGHTTP3_ERR_MALFORMED_HTTP_HEADER: + return "ERR_MALFORMED_HTTP_HEADER"; + case NGHTTP3_ERR_REMOVE_HTTP_HEADER: + return "ERR_REMOVE_HTTP_HEADER"; + case NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING: + return "ERR_MALFORMED_HTTP_MESSAGING"; + case NGHTTP3_ERR_QPACK_FATAL: + return "ERR_QPACK_FATAL"; + case NGHTTP3_ERR_QPACK_HEADER_TOO_LARGE: + return "ERR_QPACK_HEADER_TOO_LARGE"; + case NGHTTP3_ERR_STREAM_NOT_FOUND: + return "ERR_STREAM_NOT_FOUND"; + case NGHTTP3_ERR_CONN_CLOSING: + return "ERR_CONN_CLOSING"; + case NGHTTP3_ERR_STREAM_DATA_OVERFLOW: + return "ERR_STREAM_DATA_OVERFLOW"; + case NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED: + return "ERR_QPACK_DECOMPRESSION_FAILED"; + case NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR: + return "ERR_QPACK_ENCODER_STREAM_ERROR"; + case NGHTTP3_ERR_QPACK_DECODER_STREAM_ERROR: + return "ERR_QPACK_DECODER_STREAM_ERROR"; + case NGHTTP3_ERR_H3_FRAME_UNEXPECTED: + return "ERR_H3_FRAME_UNEXPECTED"; + case NGHTTP3_ERR_H3_FRAME_ERROR: + return "ERR_H3_FRAME_ERROR"; + case NGHTTP3_ERR_H3_MISSING_SETTINGS: + return "ERR_H3_MISSING_SETTINGS"; + case NGHTTP3_ERR_H3_INTERNAL_ERROR: + return "ERR_H3_INTERNAL_ERROR"; + case NGHTTP3_ERR_H3_CLOSED_CRITICAL_STREAM: + return "ERR_CLOSED_CRITICAL_STREAM"; + case NGHTTP3_ERR_H3_GENERAL_PROTOCOL_ERROR: + return "ERR_H3_GENERAL_PROTOCOL_ERROR"; + case NGHTTP3_ERR_H3_ID_ERROR: + return "ERR_H3_ID_ERROR"; + case NGHTTP3_ERR_H3_SETTINGS_ERROR: + return "ERR_H3_SETTINGS_ERROR"; + case NGHTTP3_ERR_H3_STREAM_CREATION_ERROR: + return "ERR_H3_STREAM_CREATION_ERROR"; + case NGHTTP3_ERR_NOMEM: + return "ERR_NOMEM"; + case NGHTTP3_ERR_CALLBACK_FAILURE: + return "ERR_CALLBACK_FAILURE"; + default: + return "(unknown)"; + } +} + +uint64_t nghttp3_err_infer_quic_app_error_code(int liberr) { + switch (liberr) { + case 0: + return NGHTTP3_H3_NO_ERROR; + case NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED: + return NGHTTP3_QPACK_DECOMPRESSION_FAILED; + case NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR: + return NGHTTP3_QPACK_ENCODER_STREAM_ERROR; + case NGHTTP3_ERR_QPACK_DECODER_STREAM_ERROR: + return NGHTTP3_QPACK_DECODER_STREAM_ERROR; + case NGHTTP3_ERR_H3_FRAME_UNEXPECTED: + return NGHTTP3_H3_FRAME_UNEXPECTED; + case NGHTTP3_ERR_H3_FRAME_ERROR: + return NGHTTP3_H3_FRAME_ERROR; + case NGHTTP3_ERR_H3_MISSING_SETTINGS: + return NGHTTP3_H3_MISSING_SETTINGS; + case NGHTTP3_ERR_H3_INTERNAL_ERROR: + case NGHTTP3_ERR_NOMEM: + case NGHTTP3_ERR_CALLBACK_FAILURE: + case NGHTTP3_ERR_QPACK_FATAL: + case NGHTTP3_ERR_QPACK_HEADER_TOO_LARGE: + case NGHTTP3_ERR_STREAM_DATA_OVERFLOW: + return NGHTTP3_H3_INTERNAL_ERROR; + case NGHTTP3_ERR_H3_CLOSED_CRITICAL_STREAM: + return NGHTTP3_H3_CLOSED_CRITICAL_STREAM; + case NGHTTP3_ERR_H3_GENERAL_PROTOCOL_ERROR: + return NGHTTP3_H3_GENERAL_PROTOCOL_ERROR; + case NGHTTP3_ERR_H3_ID_ERROR: + return NGHTTP3_H3_ID_ERROR; + case NGHTTP3_ERR_H3_SETTINGS_ERROR: + return NGHTTP3_H3_SETTINGS_ERROR; + case NGHTTP3_ERR_H3_STREAM_CREATION_ERROR: + return NGHTTP3_H3_STREAM_CREATION_ERROR; + case NGHTTP3_ERR_MALFORMED_HTTP_HEADER: + case NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING: + return NGHTTP3_H3_MESSAGE_ERROR; + default: + return NGHTTP3_H3_GENERAL_PROTOCOL_ERROR; + } +} + +int nghttp3_err_is_fatal(int liberr) { return liberr < NGHTTP3_ERR_FATAL; } diff --git a/contrib/libs/nghttp3/lib/nghttp3_err.h b/contrib/libs/nghttp3/lib/nghttp3_err.h new file mode 100644 index 0000000000..6f8205cc17 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_err.h @@ -0,0 +1,34 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_ERR_H +#define NGHTTP3_ERR_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#endif /* !defined(NGHTTP3_ERR_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_frame.c b/contrib/libs/nghttp3/lib/nghttp3_frame.c new file mode 100644 index 0000000000..1d87e448d8 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_frame.c @@ -0,0 +1,203 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2013 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_frame.h" + +#include <string.h> +#include <assert.h> + +#include "nghttp3_conv.h" +#include "nghttp3_str.h" + +uint8_t *nghttp3_frame_write_hd(uint8_t *p, const nghttp3_frame_hd *hd) { + p = nghttp3_put_varint(p, hd->type); + p = nghttp3_put_varint(p, hd->length); + return p; +} + +size_t nghttp3_frame_write_hd_len(const nghttp3_frame_hd *hd) { + return nghttp3_put_varintlen(hd->type) + nghttp3_put_varintlen(hd->length); +} + +uint8_t *nghttp3_frame_write_settings(uint8_t *p, + const nghttp3_frame_settings *fr) { + size_t i; + + p = nghttp3_frame_write_hd(p, &fr->hd); + + for (i = 0; i < fr->niv; ++i) { + p = nghttp3_put_varint(p, (int64_t)fr->iv[i].id); + p = nghttp3_put_varint(p, (int64_t)fr->iv[i].value); + } + + return p; +} + +size_t nghttp3_frame_write_settings_len(int64_t *ppayloadlen, + const nghttp3_frame_settings *fr) { + size_t payloadlen = 0; + size_t i; + + for (i = 0; i < fr->niv; ++i) { + payloadlen += nghttp3_put_varintlen((int64_t)fr->iv[i].id) + + nghttp3_put_varintlen((int64_t)fr->iv[i].value); + } + + *ppayloadlen = (int64_t)payloadlen; + + return nghttp3_put_varintlen(NGHTTP3_FRAME_SETTINGS) + + nghttp3_put_varintlen((int64_t)payloadlen) + payloadlen; +} + +uint8_t *nghttp3_frame_write_goaway(uint8_t *p, + const nghttp3_frame_goaway *fr) { + p = nghttp3_frame_write_hd(p, &fr->hd); + p = nghttp3_put_varint(p, fr->id); + + return p; +} + +size_t nghttp3_frame_write_goaway_len(int64_t *ppayloadlen, + const nghttp3_frame_goaway *fr) { + size_t payloadlen = nghttp3_put_varintlen(fr->id); + + *ppayloadlen = (int64_t)payloadlen; + + return nghttp3_put_varintlen(NGHTTP3_FRAME_GOAWAY) + + nghttp3_put_varintlen((int64_t)payloadlen) + payloadlen; +} + +uint8_t * +nghttp3_frame_write_priority_update(uint8_t *p, + const nghttp3_frame_priority_update *fr) { + p = nghttp3_frame_write_hd(p, &fr->hd); + p = nghttp3_put_varint(p, fr->pri_elem_id); + if (fr->datalen) { + p = nghttp3_cpymem(p, fr->data, fr->datalen); + } + + return p; +} + +size_t nghttp3_frame_write_priority_update_len( + int64_t *ppayloadlen, const nghttp3_frame_priority_update *fr) { + size_t payloadlen = nghttp3_put_varintlen(fr->pri_elem_id) + fr->datalen; + + *ppayloadlen = (int64_t)payloadlen; + + return nghttp3_put_varintlen(fr->hd.type) + + nghttp3_put_varintlen((int64_t)payloadlen) + payloadlen; +} + +int nghttp3_nva_copy(nghttp3_nv **pnva, const nghttp3_nv *nva, size_t nvlen, + const nghttp3_mem *mem) { + size_t i; + uint8_t *data = NULL; + size_t buflen = 0; + nghttp3_nv *p; + + if (nvlen == 0) { + *pnva = NULL; + + return 0; + } + + for (i = 0; i < nvlen; ++i) { + /* + 1 for null-termination */ + if ((nva[i].flags & NGHTTP3_NV_FLAG_NO_COPY_NAME) == 0) { + buflen += nva[i].namelen + 1; + } + if ((nva[i].flags & NGHTTP3_NV_FLAG_NO_COPY_VALUE) == 0) { + buflen += nva[i].valuelen + 1; + } + } + + buflen += sizeof(nghttp3_nv) * nvlen; + + *pnva = nghttp3_mem_malloc(mem, buflen); + + if (*pnva == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + p = *pnva; + data = (uint8_t *)(*pnva) + sizeof(nghttp3_nv) * nvlen; + + for (i = 0; i < nvlen; ++i) { + p->flags = nva[i].flags; + + if (nva[i].flags & NGHTTP3_NV_FLAG_NO_COPY_NAME) { + p->name = nva[i].name; + p->namelen = nva[i].namelen; + } else { + if (nva[i].namelen) { + memcpy(data, nva[i].name, nva[i].namelen); + nghttp3_downcase(data, nva[i].namelen); + } + p->name = data; + p->namelen = nva[i].namelen; + data[p->namelen] = '\0'; + data += nva[i].namelen + 1; + } + + if (nva[i].flags & NGHTTP3_NV_FLAG_NO_COPY_VALUE) { + p->value = nva[i].value; + p->valuelen = nva[i].valuelen; + } else { + if (nva[i].valuelen) { + memcpy(data, nva[i].value, nva[i].valuelen); + } + p->value = data; + p->valuelen = nva[i].valuelen; + data[p->valuelen] = '\0'; + data += nva[i].valuelen + 1; + } + + ++p; + } + return 0; +} + +void nghttp3_nva_del(nghttp3_nv *nva, const nghttp3_mem *mem) { + nghttp3_mem_free(mem, nva); +} + +void nghttp3_frame_headers_free(nghttp3_frame_headers *fr, + const nghttp3_mem *mem) { + if (fr == NULL) { + return; + } + + nghttp3_nva_del(fr->nva, mem); +} + +void nghttp3_frame_priority_update_free(nghttp3_frame_priority_update *fr, + const nghttp3_mem *mem) { + if (fr == NULL) { + return; + } + + nghttp3_mem_free(mem, fr->data); +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_frame.h b/contrib/libs/nghttp3/lib/nghttp3_frame.h new file mode 100644 index 0000000000..e216967d74 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_frame.h @@ -0,0 +1,230 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2013 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_FRAME_H +#define NGHTTP3_FRAME_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_buf.h" + +#define NGHTTP3_FRAME_DATA 0x00 +#define NGHTTP3_FRAME_HEADERS 0x01 +#define NGHTTP3_FRAME_CANCEL_PUSH 0x03 +#define NGHTTP3_FRAME_SETTINGS 0x04 +#define NGHTTP3_FRAME_PUSH_PROMISE 0x05 +#define NGHTTP3_FRAME_GOAWAY 0x07 +#define NGHTTP3_FRAME_MAX_PUSH_ID 0x0d +/* PRIORITY_UPDATE: https://datatracker.ietf.org/doc/html/rfc9218 */ +#define NGHTTP3_FRAME_PRIORITY_UPDATE 0x0f0700 +#define NGHTTP3_FRAME_PRIORITY_UPDATE_PUSH_ID 0x0f0701 + +/* Frame types that are reserved for HTTP/2, and must not be used in + HTTP/3. */ +#define NGHTTP3_H2_FRAME_PRIORITY 0x02 +#define NGHTTP3_H2_FRAME_PING 0x06 +#define NGHTTP3_H2_FRAME_WINDOW_UPDATE 0x08 +#define NGHTTP3_H2_FRAME_CONTINUATION 0x9 + +typedef struct nghttp3_frame_hd { + int64_t type; + int64_t length; +} nghttp3_frame_hd; + +typedef struct nghttp3_frame_data { + nghttp3_frame_hd hd; +} nghttp3_frame_data; + +typedef struct nghttp3_frame_headers { + nghttp3_frame_hd hd; + nghttp3_nv *nva; + size_t nvlen; +} nghttp3_frame_headers; + +#define NGHTTP3_SETTINGS_ID_MAX_FIELD_SECTION_SIZE 0x06 +#define NGHTTP3_SETTINGS_ID_QPACK_MAX_TABLE_CAPACITY 0x01 +#define NGHTTP3_SETTINGS_ID_QPACK_BLOCKED_STREAMS 0x07 +#define NGHTTP3_SETTINGS_ID_ENABLE_CONNECT_PROTOCOL 0x08 +#define NGHTTP3_SETTINGS_ID_H3_DATAGRAM 0x33 + +#define NGHTTP3_H2_SETTINGS_ID_ENABLE_PUSH 0x2 +#define NGHTTP3_H2_SETTINGS_ID_MAX_CONCURRENT_STREAMS 0x3 +#define NGHTTP3_H2_SETTINGS_ID_INITIAL_WINDOW_SIZE 0x4 +#define NGHTTP3_H2_SETTINGS_ID_MAX_FRAME_SIZE 0x5 + +typedef struct nghttp3_settings_entry { + uint64_t id; + uint64_t value; +} nghttp3_settings_entry; + +typedef struct nghttp3_frame_settings { + nghttp3_frame_hd hd; + size_t niv; + nghttp3_settings_entry iv[1]; +} nghttp3_frame_settings; + +typedef struct nghttp3_frame_goaway { + nghttp3_frame_hd hd; + int64_t id; +} nghttp3_frame_goaway; + +typedef struct nghttp3_frame_priority_update { + nghttp3_frame_hd hd; + /* pri_elem_id is stream ID if hd.type == + NGHTTP3_FRAME_PRIORITY_UPDATE. It is push ID if hd.type == + NGHTTP3_FRAME_PRIORITY_UPDATE_PUSH_ID. It is undefined + otherwise. */ + int64_t pri_elem_id; + /* When sending this frame, data should point to the buffer + containing a serialized priority field value and its length is + set to datalen. On reception, pri contains the decoded priority + header value. */ + union { + nghttp3_pri pri; + struct { + uint8_t *data; + size_t datalen; + }; + }; +} nghttp3_frame_priority_update; + +typedef union nghttp3_frame { + nghttp3_frame_hd hd; + nghttp3_frame_data data; + nghttp3_frame_headers headers; + nghttp3_frame_settings settings; + nghttp3_frame_goaway goaway; + nghttp3_frame_priority_update priority_update; +} nghttp3_frame; + +/* + * nghttp3_frame_write_hd writes frame header |hd| to |dest|. This + * function assumes that |dest| has enough space to write |hd|. + * + * This function returns |dest| plus the number of bytes written. + */ +uint8_t *nghttp3_frame_write_hd(uint8_t *dest, const nghttp3_frame_hd *hd); + +/* + * nghttp3_frame_write_hd_len returns the number of bytes required to + * write |hd|. hd->length must be set. + */ +size_t nghttp3_frame_write_hd_len(const nghttp3_frame_hd *hd); + +/* + * nghttp3_frame_write_settings writes SETTINGS frame |fr| to |dest|. + * This function assumes that |dest| has enough space to write |fr|. + * + * This function returns |dest| plus the number of bytes written. + */ +uint8_t *nghttp3_frame_write_settings(uint8_t *dest, + const nghttp3_frame_settings *fr); + +/* + * nghttp3_frame_write_settings_len returns the number of bytes + * required to write |fr|. fr->hd.length is ignored. This function + * stores payload length in |*ppayloadlen|. + */ +size_t nghttp3_frame_write_settings_len(int64_t *pppayloadlen, + const nghttp3_frame_settings *fr); + +/* + * nghttp3_frame_write_goaway writes GOAWAY frame |fr| to |dest|. + * This function assumes that |dest| has enough space to write |fr|. + * + * This function returns |dest| plus the number of bytes written. + */ +uint8_t *nghttp3_frame_write_goaway(uint8_t *dest, + const nghttp3_frame_goaway *fr); + +/* + * nghttp3_frame_write_goaway_len returns the number of bytes required + * to write |fr|. fr->hd.length is ignored. This function stores + * payload length in |*ppayloadlen|. + */ +size_t nghttp3_frame_write_goaway_len(int64_t *ppayloadlen, + const nghttp3_frame_goaway *fr); + +/* + * nghttp3_frame_write_priority_update writes PRIORITY_UPDATE frame + * |fr| to |dest|. This function assumes that |dest| has enough space + * to write |fr|. + * + * This function returns |dest| plus the number of bytes written; + */ +uint8_t * +nghttp3_frame_write_priority_update(uint8_t *dest, + const nghttp3_frame_priority_update *fr); + +/* + * nghttp3_frame_write_priority_update_len returns the number of bytes + * required to write |fr|. fr->hd.length is ignored. This function + * stores payload length in |*ppayloadlen|. + */ +size_t nghttp3_frame_write_priority_update_len( + int64_t *ppayloadlen, const nghttp3_frame_priority_update *fr); + +/* + * nghttp3_nva_copy copies name/value pairs from |nva|, which contains + * |nvlen| pairs, to |*nva_ptr|, which is dynamically allocated so + * that all items can be stored. The resultant name and value in + * nghttp2_nv are guaranteed to be NULL-terminated even if the input + * is not null-terminated. + * + * The |*pnva| must be freed using nghttp3_nva_del(). + * + * This function returns 0 if it succeeds or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_nva_copy(nghttp3_nv **pnva, const nghttp3_nv *nva, size_t nvlen, + const nghttp3_mem *mem); + +/* + * nghttp3_nva_del frees |nva|. + */ +void nghttp3_nva_del(nghttp3_nv *nva, const nghttp3_mem *mem); + +/* + * nghttp3_frame_headers_free frees memory allocated for |fr|. It + * assumes that fr->nva is created by nghttp3_nva_copy() or NULL. + */ +void nghttp3_frame_headers_free(nghttp3_frame_headers *fr, + const nghttp3_mem *mem); + +/* + * nghttp3_frame_priority_update_free frees memory allocated for |fr|. + * This function should only be called for an outgoing frame. + */ +void nghttp3_frame_priority_update_free(nghttp3_frame_priority_update *fr, + const nghttp3_mem *mem); + +#endif /* !defined(NGHTTP3_FRAME_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_gaptr.c b/contrib/libs/nghttp3/lib/nghttp3_gaptr.c new file mode 100644 index 0000000000..20eed5faa2 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_gaptr.c @@ -0,0 +1,163 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_gaptr.h" + +#include <string.h> +#include <assert.h> + +void nghttp3_gaptr_init(nghttp3_gaptr *gaptr, const nghttp3_mem *mem) { + nghttp3_ksl_init(&gaptr->gap, nghttp3_ksl_range_compar, sizeof(nghttp3_range), + mem); + + gaptr->mem = mem; +} + +static int gaptr_gap_init(nghttp3_gaptr *gaptr) { + nghttp3_range range = {0, UINT64_MAX}; + + return nghttp3_ksl_insert(&gaptr->gap, NULL, &range, NULL); +} + +void nghttp3_gaptr_free(nghttp3_gaptr *gaptr) { + if (gaptr == NULL) { + return; + } + + nghttp3_ksl_free(&gaptr->gap); +} + +int nghttp3_gaptr_push(nghttp3_gaptr *gaptr, uint64_t offset, + uint64_t datalen) { + int rv; + nghttp3_range k, m, l, r, q = {offset, offset + datalen}; + nghttp3_ksl_it it; + + if (nghttp3_ksl_len(&gaptr->gap) == 0) { + rv = gaptr_gap_init(gaptr); + if (rv != 0) { + return rv; + } + } + + it = nghttp3_ksl_lower_bound_compar(&gaptr->gap, &q, + nghttp3_ksl_range_exclusive_compar); + + for (; !nghttp3_ksl_it_end(&it);) { + k = *(nghttp3_range *)nghttp3_ksl_it_key(&it); + m = nghttp3_range_intersect(&q, &k); + if (!nghttp3_range_len(&m)) { + break; + } + + if (nghttp3_range_eq(&k, &m)) { + nghttp3_ksl_remove_hint(&gaptr->gap, &it, &it, &k); + continue; + } + + nghttp3_range_cut(&l, &r, &k, &m); + + if (nghttp3_range_len(&l)) { + nghttp3_ksl_update_key(&gaptr->gap, &k, &l); + + if (nghttp3_range_len(&r)) { + rv = nghttp3_ksl_insert(&gaptr->gap, &it, &r, NULL); + if (rv != 0) { + return rv; + } + } + } else if (nghttp3_range_len(&r)) { + nghttp3_ksl_update_key(&gaptr->gap, &k, &r); + } + + nghttp3_ksl_it_next(&it); + } + + return 0; +} + +uint64_t nghttp3_gaptr_first_gap_offset(nghttp3_gaptr *gaptr) { + nghttp3_ksl_it it; + + if (nghttp3_ksl_len(&gaptr->gap) == 0) { + return 0; + } + + it = nghttp3_ksl_begin(&gaptr->gap); + + return ((nghttp3_range *)nghttp3_ksl_it_key(&it))->begin; +} + +nghttp3_range nghttp3_gaptr_get_first_gap_after(nghttp3_gaptr *gaptr, + uint64_t offset) { + nghttp3_range q = {offset, offset + 1}; + nghttp3_ksl_it it; + + if (nghttp3_ksl_len(&gaptr->gap) == 0) { + nghttp3_range r = {0, UINT64_MAX}; + return r; + } + + it = nghttp3_ksl_lower_bound_compar(&gaptr->gap, &q, + nghttp3_ksl_range_exclusive_compar); + + assert(!nghttp3_ksl_it_end(&it)); + + return *(nghttp3_range *)nghttp3_ksl_it_key(&it); +} + +int nghttp3_gaptr_is_pushed(nghttp3_gaptr *gaptr, uint64_t offset, + uint64_t datalen) { + nghttp3_range q = {offset, offset + datalen}; + nghttp3_ksl_it it; + nghttp3_range m; + + if (nghttp3_ksl_len(&gaptr->gap) == 0) { + return 0; + } + + it = nghttp3_ksl_lower_bound_compar(&gaptr->gap, &q, + nghttp3_ksl_range_exclusive_compar); + m = nghttp3_range_intersect(&q, (nghttp3_range *)nghttp3_ksl_it_key(&it)); + + return nghttp3_range_len(&m) == 0; +} + +void nghttp3_gaptr_drop_first_gap(nghttp3_gaptr *gaptr) { + nghttp3_ksl_it it; + nghttp3_range r; + + if (nghttp3_ksl_len(&gaptr->gap) == 0) { + return; + } + + it = nghttp3_ksl_begin(&gaptr->gap); + + assert(!nghttp3_ksl_it_end(&it)); + + r = *(nghttp3_range *)nghttp3_ksl_it_key(&it); + + nghttp3_ksl_remove_hint(&gaptr->gap, NULL, &it, &r); +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_gaptr.h b/contrib/libs/nghttp3/lib/nghttp3_gaptr.h new file mode 100644 index 0000000000..7578fdc14f --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_gaptr.h @@ -0,0 +1,99 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_GAPTR_H +#define NGHTTP3_GAPTR_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_mem.h" +#include "nghttp3_ksl.h" +#include "nghttp3_range.h" + +/* + * nghttp3_gaptr maintains the gap in the range [0, UINT64_MAX). + */ +typedef struct nghttp3_gaptr { + /* gap maintains the range of offset which is not pushed + yet. Initially, its range is [0, UINT64_MAX). "gap" is the range + that is not pushed yet. */ + nghttp3_ksl gap; + /* mem is custom memory allocator */ + const nghttp3_mem *mem; +} nghttp3_gaptr; + +/* + * nghttp3_gaptr_init initializes |gaptr|. + */ +void nghttp3_gaptr_init(nghttp3_gaptr *gaptr, const nghttp3_mem *mem); + +/* + * nghttp3_gaptr_free frees resources allocated for |gaptr|. + */ +void nghttp3_gaptr_free(nghttp3_gaptr *gaptr); + +/* + * nghttp3_gaptr_push pushes the range [offset, offset + datalen). + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory + */ +int nghttp3_gaptr_push(nghttp3_gaptr *gaptr, uint64_t offset, uint64_t datalen); + +/* + * nghttp3_gaptr_first_gap_offset returns the offset to the first gap. + * If there is no gap, it returns UINT64_MAX. + */ +uint64_t nghttp3_gaptr_first_gap_offset(nghttp3_gaptr *gaptr); + +/* + * nghttp3_gaptr_get_first_gap_after returns the first gap which + * includes or comes after |offset|. + */ +nghttp3_range nghttp3_gaptr_get_first_gap_after(nghttp3_gaptr *gaptr, + uint64_t offset); + +/* + * nghttp3_gaptr_is_pushed returns nonzero if range [offset, offset + + * datalen) is completely pushed into this object. + */ +int nghttp3_gaptr_is_pushed(nghttp3_gaptr *gaptr, uint64_t offset, + uint64_t datalen); + +/* + * nghttp3_gaptr_drop_first_gap deletes the first gap entirely as if + * the range is pushed. This function assumes that at least one gap + * exists. + */ +void nghttp3_gaptr_drop_first_gap(nghttp3_gaptr *gaptr); + +#endif /* !defined(NGHTTP3_GAPTR_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_http.c b/contrib/libs/nghttp3/lib/nghttp3_http.c new file mode 100644 index 0000000000..38092cfb7c --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_http.c @@ -0,0 +1,1024 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2015 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_http.h" + +#include <string.h> +#include <assert.h> + +#ifdef __AVX2__ +# include <immintrin.h> +#endif /* __AVX2__ */ + +#include "nghttp3_stream.h" +#include "nghttp3_macro.h" +#include "nghttp3_conv.h" +#include "nghttp3_unreachable.h" +#include "sfparse/sfparse.h" + +static uint8_t downcase(uint8_t c) { + return 'A' <= c && c <= 'Z' ? (uint8_t)(c - 'A' + 'a') : c; +} + +/* + * memieq returns 1 if the data pointed by |a| of length |n| equals to + * |b| of the same length in case-insensitive manner. The data + * pointed by |a| must not include upper cased letters (A-Z). + */ +static int memieq(const void *a, const void *b, size_t n) { + size_t i; + const uint8_t *aa = a, *bb = b; + + for (i = 0; i < n; ++i) { + if (aa[i] != downcase(bb[i])) { + return 0; + } + } + return 1; +} + +#define lstrieq(A, B, N) ((sizeof((A)) - 1) == (N) && memieq((A), (B), (N))) + +static int64_t parse_uint(const uint8_t *s, size_t len) { + int64_t n = 0; + size_t i; + if (len == 0) { + return -1; + } + for (i = 0; i < len; ++i) { + if ('0' <= s[i] && s[i] <= '9') { + if (n > INT64_MAX / 10) { + return -1; + } + n *= 10; + if (n > INT64_MAX - (s[i] - '0')) { + return -1; + } + n += s[i] - '0'; + continue; + } + return -1; + } + return n; +} + +static int check_pseudo_header(nghttp3_http_state *http, + const nghttp3_qpack_nv *nv, uint32_t flag) { + if ((http->flags & flag) || nv->value->len == 0) { + return 0; + } + http->flags |= flag; + return 1; +} + +static int expect_response_body(nghttp3_http_state *http) { + return (http->flags & NGHTTP3_HTTP_FLAG_METH_HEAD) == 0 && + http->status_code / 100 != 1 && http->status_code != 304 && + http->status_code != 204; +} + +/* For "http" or "https" URIs, OPTIONS request may have "*" in :path + header field to represent system-wide OPTIONS request. Otherwise, + :path header field value must start with "/". This function must + be called after ":method" header field was received. This function + returns nonzero if path is valid.*/ +static int check_path_flags(nghttp3_http_state *http) { + return (http->flags & NGHTTP3_HTTP_FLAG_SCHEME_HTTP) == 0 || + ((http->flags & NGHTTP3_HTTP_FLAG_PATH_REGULAR) || + ((http->flags & NGHTTP3_HTTP_FLAG_METH_OPTIONS) && + (http->flags & NGHTTP3_HTTP_FLAG_PATH_ASTERISK))); +} + +static int is_ws(uint8_t c) { + switch (c) { + case ' ': + case '\t': + return 1; + default: + return 0; + } +} + +int nghttp3_http_parse_priority(nghttp3_pri *dest, const uint8_t *value, + size_t valuelen) { + nghttp3_pri pri = *dest; + sf_parser sfp; + sf_vec key; + sf_value val; + int rv; + + sf_parser_init(&sfp, value, valuelen); + + for (;;) { + rv = sf_parser_dict(&sfp, &key, &val); + if (rv != 0) { + if (rv == SF_ERR_EOF) { + break; + } + + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + if (key.len != 1) { + continue; + } + + switch (key.base[0]) { + case 'i': + if (val.type != SF_TYPE_BOOLEAN) { + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + pri.inc = (uint8_t)val.boolean; + + break; + case 'u': + if (val.type != SF_TYPE_INTEGER || val.integer < NGHTTP3_URGENCY_HIGH || + NGHTTP3_URGENCY_LOW < val.integer) { + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + pri.urgency = (uint32_t)val.integer; + + break; + } + } + + *dest = pri; + + return 0; +} + +int nghttp3_pri_parse_priority_versioned(int pri_version, nghttp3_pri *dest, + const uint8_t *value, + size_t valuelen) { + (void)pri_version; + + return nghttp3_http_parse_priority(dest, value, valuelen); +} + +/* Generated by genauthroitychartbl.py */ +static char VALID_AUTHORITY_CHARS[] = { + 0 /* NUL */, 0 /* SOH */, 0 /* STX */, 0 /* ETX */, + 0 /* EOT */, 0 /* ENQ */, 0 /* ACK */, 0 /* BEL */, + 0 /* BS */, 0 /* HT */, 0 /* LF */, 0 /* VT */, + 0 /* FF */, 0 /* CR */, 0 /* SO */, 0 /* SI */, + 0 /* DLE */, 0 /* DC1 */, 0 /* DC2 */, 0 /* DC3 */, + 0 /* DC4 */, 0 /* NAK */, 0 /* SYN */, 0 /* ETB */, + 0 /* CAN */, 0 /* EM */, 0 /* SUB */, 0 /* ESC */, + 0 /* FS */, 0 /* GS */, 0 /* RS */, 0 /* US */, + 0 /* SPC */, 1 /* ! */, 0 /* " */, 0 /* # */, + 1 /* $ */, 1 /* % */, 1 /* & */, 1 /* ' */, + 1 /* ( */, 1 /* ) */, 1 /* * */, 1 /* + */, + 1 /* , */, 1 /* - */, 1 /* . */, 0 /* / */, + 1 /* 0 */, 1 /* 1 */, 1 /* 2 */, 1 /* 3 */, + 1 /* 4 */, 1 /* 5 */, 1 /* 6 */, 1 /* 7 */, + 1 /* 8 */, 1 /* 9 */, 1 /* : */, 1 /* ; */, + 0 /* < */, 1 /* = */, 0 /* > */, 0 /* ? */, + 1 /* @ */, 1 /* A */, 1 /* B */, 1 /* C */, + 1 /* D */, 1 /* E */, 1 /* F */, 1 /* G */, + 1 /* H */, 1 /* I */, 1 /* J */, 1 /* K */, + 1 /* L */, 1 /* M */, 1 /* N */, 1 /* O */, + 1 /* P */, 1 /* Q */, 1 /* R */, 1 /* S */, + 1 /* T */, 1 /* U */, 1 /* V */, 1 /* W */, + 1 /* X */, 1 /* Y */, 1 /* Z */, 1 /* [ */, + 0 /* \ */, 1 /* ] */, 0 /* ^ */, 1 /* _ */, + 0 /* ` */, 1 /* a */, 1 /* b */, 1 /* c */, + 1 /* d */, 1 /* e */, 1 /* f */, 1 /* g */, + 1 /* h */, 1 /* i */, 1 /* j */, 1 /* k */, + 1 /* l */, 1 /* m */, 1 /* n */, 1 /* o */, + 1 /* p */, 1 /* q */, 1 /* r */, 1 /* s */, + 1 /* t */, 1 /* u */, 1 /* v */, 1 /* w */, + 1 /* x */, 1 /* y */, 1 /* z */, 0 /* { */, + 0 /* | */, 0 /* } */, 1 /* ~ */, 0 /* DEL */, + 0 /* 0x80 */, 0 /* 0x81 */, 0 /* 0x82 */, 0 /* 0x83 */, + 0 /* 0x84 */, 0 /* 0x85 */, 0 /* 0x86 */, 0 /* 0x87 */, + 0 /* 0x88 */, 0 /* 0x89 */, 0 /* 0x8a */, 0 /* 0x8b */, + 0 /* 0x8c */, 0 /* 0x8d */, 0 /* 0x8e */, 0 /* 0x8f */, + 0 /* 0x90 */, 0 /* 0x91 */, 0 /* 0x92 */, 0 /* 0x93 */, + 0 /* 0x94 */, 0 /* 0x95 */, 0 /* 0x96 */, 0 /* 0x97 */, + 0 /* 0x98 */, 0 /* 0x99 */, 0 /* 0x9a */, 0 /* 0x9b */, + 0 /* 0x9c */, 0 /* 0x9d */, 0 /* 0x9e */, 0 /* 0x9f */, + 0 /* 0xa0 */, 0 /* 0xa1 */, 0 /* 0xa2 */, 0 /* 0xa3 */, + 0 /* 0xa4 */, 0 /* 0xa5 */, 0 /* 0xa6 */, 0 /* 0xa7 */, + 0 /* 0xa8 */, 0 /* 0xa9 */, 0 /* 0xaa */, 0 /* 0xab */, + 0 /* 0xac */, 0 /* 0xad */, 0 /* 0xae */, 0 /* 0xaf */, + 0 /* 0xb0 */, 0 /* 0xb1 */, 0 /* 0xb2 */, 0 /* 0xb3 */, + 0 /* 0xb4 */, 0 /* 0xb5 */, 0 /* 0xb6 */, 0 /* 0xb7 */, + 0 /* 0xb8 */, 0 /* 0xb9 */, 0 /* 0xba */, 0 /* 0xbb */, + 0 /* 0xbc */, 0 /* 0xbd */, 0 /* 0xbe */, 0 /* 0xbf */, + 0 /* 0xc0 */, 0 /* 0xc1 */, 0 /* 0xc2 */, 0 /* 0xc3 */, + 0 /* 0xc4 */, 0 /* 0xc5 */, 0 /* 0xc6 */, 0 /* 0xc7 */, + 0 /* 0xc8 */, 0 /* 0xc9 */, 0 /* 0xca */, 0 /* 0xcb */, + 0 /* 0xcc */, 0 /* 0xcd */, 0 /* 0xce */, 0 /* 0xcf */, + 0 /* 0xd0 */, 0 /* 0xd1 */, 0 /* 0xd2 */, 0 /* 0xd3 */, + 0 /* 0xd4 */, 0 /* 0xd5 */, 0 /* 0xd6 */, 0 /* 0xd7 */, + 0 /* 0xd8 */, 0 /* 0xd9 */, 0 /* 0xda */, 0 /* 0xdb */, + 0 /* 0xdc */, 0 /* 0xdd */, 0 /* 0xde */, 0 /* 0xdf */, + 0 /* 0xe0 */, 0 /* 0xe1 */, 0 /* 0xe2 */, 0 /* 0xe3 */, + 0 /* 0xe4 */, 0 /* 0xe5 */, 0 /* 0xe6 */, 0 /* 0xe7 */, + 0 /* 0xe8 */, 0 /* 0xe9 */, 0 /* 0xea */, 0 /* 0xeb */, + 0 /* 0xec */, 0 /* 0xed */, 0 /* 0xee */, 0 /* 0xef */, + 0 /* 0xf0 */, 0 /* 0xf1 */, 0 /* 0xf2 */, 0 /* 0xf3 */, + 0 /* 0xf4 */, 0 /* 0xf5 */, 0 /* 0xf6 */, 0 /* 0xf7 */, + 0 /* 0xf8 */, 0 /* 0xf9 */, 0 /* 0xfa */, 0 /* 0xfb */, + 0 /* 0xfc */, 0 /* 0xfd */, 0 /* 0xfe */, 0 /* 0xff */ +}; + +static int check_authority(const uint8_t *value, size_t len) { + const uint8_t *last; + for (last = value + len; value != last; ++value) { + if (!VALID_AUTHORITY_CHARS[*value]) { + return 0; + } + } + return 1; +} + +static int check_scheme(const uint8_t *value, size_t len) { + const uint8_t *last; + if (len == 0) { + return 0; + } + + if (!(('A' <= *value && *value <= 'Z') || ('a' <= *value && *value <= 'z'))) { + return 0; + } + + last = value + len; + ++value; + + for (; value != last; ++value) { + if (!(('A' <= *value && *value <= 'Z') || + ('a' <= *value && *value <= 'z') || + ('0' <= *value && *value <= '9') || *value == '+' || *value == '-' || + *value == '.')) { + return 0; + } + } + return 1; +} + +/* Generated by genmethodchartbl.py */ +static char VALID_METHOD_CHARS[] = { + 0 /* NUL */, 0 /* SOH */, 0 /* STX */, 0 /* ETX */, + 0 /* EOT */, 0 /* ENQ */, 0 /* ACK */, 0 /* BEL */, + 0 /* BS */, 0 /* HT */, 0 /* LF */, 0 /* VT */, + 0 /* FF */, 0 /* CR */, 0 /* SO */, 0 /* SI */, + 0 /* DLE */, 0 /* DC1 */, 0 /* DC2 */, 0 /* DC3 */, + 0 /* DC4 */, 0 /* NAK */, 0 /* SYN */, 0 /* ETB */, + 0 /* CAN */, 0 /* EM */, 0 /* SUB */, 0 /* ESC */, + 0 /* FS */, 0 /* GS */, 0 /* RS */, 0 /* US */, + 0 /* SPC */, 1 /* ! */, 0 /* " */, 1 /* # */, + 1 /* $ */, 1 /* % */, 1 /* & */, 1 /* ' */, + 0 /* ( */, 0 /* ) */, 1 /* * */, 1 /* + */, + 0 /* , */, 1 /* - */, 1 /* . */, 0 /* / */, + 1 /* 0 */, 1 /* 1 */, 1 /* 2 */, 1 /* 3 */, + 1 /* 4 */, 1 /* 5 */, 1 /* 6 */, 1 /* 7 */, + 1 /* 8 */, 1 /* 9 */, 0 /* : */, 0 /* ; */, + 0 /* < */, 0 /* = */, 0 /* > */, 0 /* ? */, + 0 /* @ */, 1 /* A */, 1 /* B */, 1 /* C */, + 1 /* D */, 1 /* E */, 1 /* F */, 1 /* G */, + 1 /* H */, 1 /* I */, 1 /* J */, 1 /* K */, + 1 /* L */, 1 /* M */, 1 /* N */, 1 /* O */, + 1 /* P */, 1 /* Q */, 1 /* R */, 1 /* S */, + 1 /* T */, 1 /* U */, 1 /* V */, 1 /* W */, + 1 /* X */, 1 /* Y */, 1 /* Z */, 0 /* [ */, + 0 /* \ */, 0 /* ] */, 1 /* ^ */, 1 /* _ */, + 1 /* ` */, 1 /* a */, 1 /* b */, 1 /* c */, + 1 /* d */, 1 /* e */, 1 /* f */, 1 /* g */, + 1 /* h */, 1 /* i */, 1 /* j */, 1 /* k */, + 1 /* l */, 1 /* m */, 1 /* n */, 1 /* o */, + 1 /* p */, 1 /* q */, 1 /* r */, 1 /* s */, + 1 /* t */, 1 /* u */, 1 /* v */, 1 /* w */, + 1 /* x */, 1 /* y */, 1 /* z */, 0 /* { */, + 1 /* | */, 0 /* } */, 1 /* ~ */, 0 /* DEL */, + 0 /* 0x80 */, 0 /* 0x81 */, 0 /* 0x82 */, 0 /* 0x83 */, + 0 /* 0x84 */, 0 /* 0x85 */, 0 /* 0x86 */, 0 /* 0x87 */, + 0 /* 0x88 */, 0 /* 0x89 */, 0 /* 0x8a */, 0 /* 0x8b */, + 0 /* 0x8c */, 0 /* 0x8d */, 0 /* 0x8e */, 0 /* 0x8f */, + 0 /* 0x90 */, 0 /* 0x91 */, 0 /* 0x92 */, 0 /* 0x93 */, + 0 /* 0x94 */, 0 /* 0x95 */, 0 /* 0x96 */, 0 /* 0x97 */, + 0 /* 0x98 */, 0 /* 0x99 */, 0 /* 0x9a */, 0 /* 0x9b */, + 0 /* 0x9c */, 0 /* 0x9d */, 0 /* 0x9e */, 0 /* 0x9f */, + 0 /* 0xa0 */, 0 /* 0xa1 */, 0 /* 0xa2 */, 0 /* 0xa3 */, + 0 /* 0xa4 */, 0 /* 0xa5 */, 0 /* 0xa6 */, 0 /* 0xa7 */, + 0 /* 0xa8 */, 0 /* 0xa9 */, 0 /* 0xaa */, 0 /* 0xab */, + 0 /* 0xac */, 0 /* 0xad */, 0 /* 0xae */, 0 /* 0xaf */, + 0 /* 0xb0 */, 0 /* 0xb1 */, 0 /* 0xb2 */, 0 /* 0xb3 */, + 0 /* 0xb4 */, 0 /* 0xb5 */, 0 /* 0xb6 */, 0 /* 0xb7 */, + 0 /* 0xb8 */, 0 /* 0xb9 */, 0 /* 0xba */, 0 /* 0xbb */, + 0 /* 0xbc */, 0 /* 0xbd */, 0 /* 0xbe */, 0 /* 0xbf */, + 0 /* 0xc0 */, 0 /* 0xc1 */, 0 /* 0xc2 */, 0 /* 0xc3 */, + 0 /* 0xc4 */, 0 /* 0xc5 */, 0 /* 0xc6 */, 0 /* 0xc7 */, + 0 /* 0xc8 */, 0 /* 0xc9 */, 0 /* 0xca */, 0 /* 0xcb */, + 0 /* 0xcc */, 0 /* 0xcd */, 0 /* 0xce */, 0 /* 0xcf */, + 0 /* 0xd0 */, 0 /* 0xd1 */, 0 /* 0xd2 */, 0 /* 0xd3 */, + 0 /* 0xd4 */, 0 /* 0xd5 */, 0 /* 0xd6 */, 0 /* 0xd7 */, + 0 /* 0xd8 */, 0 /* 0xd9 */, 0 /* 0xda */, 0 /* 0xdb */, + 0 /* 0xdc */, 0 /* 0xdd */, 0 /* 0xde */, 0 /* 0xdf */, + 0 /* 0xe0 */, 0 /* 0xe1 */, 0 /* 0xe2 */, 0 /* 0xe3 */, + 0 /* 0xe4 */, 0 /* 0xe5 */, 0 /* 0xe6 */, 0 /* 0xe7 */, + 0 /* 0xe8 */, 0 /* 0xe9 */, 0 /* 0xea */, 0 /* 0xeb */, + 0 /* 0xec */, 0 /* 0xed */, 0 /* 0xee */, 0 /* 0xef */, + 0 /* 0xf0 */, 0 /* 0xf1 */, 0 /* 0xf2 */, 0 /* 0xf3 */, + 0 /* 0xf4 */, 0 /* 0xf5 */, 0 /* 0xf6 */, 0 /* 0xf7 */, + 0 /* 0xf8 */, 0 /* 0xf9 */, 0 /* 0xfa */, 0 /* 0xfb */, + 0 /* 0xfc */, 0 /* 0xfd */, 0 /* 0xfe */, 0 /* 0xff */ +}; + +static int check_method(const uint8_t *value, size_t len) { + const uint8_t *last; + if (len == 0) { + return 0; + } + for (last = value + len; value != last; ++value) { + if (!VALID_METHOD_CHARS[*value]) { + return 0; + } + } + return 1; +} + +/* Generated by genpathchartbl.py */ +static char VALID_PATH_CHARS[] = { + 0 /* NUL */, 0 /* SOH */, 0 /* STX */, 0 /* ETX */, + 0 /* EOT */, 0 /* ENQ */, 0 /* ACK */, 0 /* BEL */, + 0 /* BS */, 0 /* HT */, 0 /* LF */, 0 /* VT */, + 0 /* FF */, 0 /* CR */, 0 /* SO */, 0 /* SI */, + 0 /* DLE */, 0 /* DC1 */, 0 /* DC2 */, 0 /* DC3 */, + 0 /* DC4 */, 0 /* NAK */, 0 /* SYN */, 0 /* ETB */, + 0 /* CAN */, 0 /* EM */, 0 /* SUB */, 0 /* ESC */, + 0 /* FS */, 0 /* GS */, 0 /* RS */, 0 /* US */, + 0 /* SPC */, 1 /* ! */, 1 /* " */, 1 /* # */, + 1 /* $ */, 1 /* % */, 1 /* & */, 1 /* ' */, + 1 /* ( */, 1 /* ) */, 1 /* * */, 1 /* + */, + 1 /* , */, 1 /* - */, 1 /* . */, 1 /* / */, + 1 /* 0 */, 1 /* 1 */, 1 /* 2 */, 1 /* 3 */, + 1 /* 4 */, 1 /* 5 */, 1 /* 6 */, 1 /* 7 */, + 1 /* 8 */, 1 /* 9 */, 1 /* : */, 1 /* ; */, + 1 /* < */, 1 /* = */, 1 /* > */, 1 /* ? */, + 1 /* @ */, 1 /* A */, 1 /* B */, 1 /* C */, + 1 /* D */, 1 /* E */, 1 /* F */, 1 /* G */, + 1 /* H */, 1 /* I */, 1 /* J */, 1 /* K */, + 1 /* L */, 1 /* M */, 1 /* N */, 1 /* O */, + 1 /* P */, 1 /* Q */, 1 /* R */, 1 /* S */, + 1 /* T */, 1 /* U */, 1 /* V */, 1 /* W */, + 1 /* X */, 1 /* Y */, 1 /* Z */, 1 /* [ */, + 1 /* \ */, 1 /* ] */, 1 /* ^ */, 1 /* _ */, + 1 /* ` */, 1 /* a */, 1 /* b */, 1 /* c */, + 1 /* d */, 1 /* e */, 1 /* f */, 1 /* g */, + 1 /* h */, 1 /* i */, 1 /* j */, 1 /* k */, + 1 /* l */, 1 /* m */, 1 /* n */, 1 /* o */, + 1 /* p */, 1 /* q */, 1 /* r */, 1 /* s */, + 1 /* t */, 1 /* u */, 1 /* v */, 1 /* w */, + 1 /* x */, 1 /* y */, 1 /* z */, 1 /* { */, + 1 /* | */, 1 /* } */, 1 /* ~ */, 0 /* DEL */, + 1 /* 0x80 */, 1 /* 0x81 */, 1 /* 0x82 */, 1 /* 0x83 */, + 1 /* 0x84 */, 1 /* 0x85 */, 1 /* 0x86 */, 1 /* 0x87 */, + 1 /* 0x88 */, 1 /* 0x89 */, 1 /* 0x8a */, 1 /* 0x8b */, + 1 /* 0x8c */, 1 /* 0x8d */, 1 /* 0x8e */, 1 /* 0x8f */, + 1 /* 0x90 */, 1 /* 0x91 */, 1 /* 0x92 */, 1 /* 0x93 */, + 1 /* 0x94 */, 1 /* 0x95 */, 1 /* 0x96 */, 1 /* 0x97 */, + 1 /* 0x98 */, 1 /* 0x99 */, 1 /* 0x9a */, 1 /* 0x9b */, + 1 /* 0x9c */, 1 /* 0x9d */, 1 /* 0x9e */, 1 /* 0x9f */, + 1 /* 0xa0 */, 1 /* 0xa1 */, 1 /* 0xa2 */, 1 /* 0xa3 */, + 1 /* 0xa4 */, 1 /* 0xa5 */, 1 /* 0xa6 */, 1 /* 0xa7 */, + 1 /* 0xa8 */, 1 /* 0xa9 */, 1 /* 0xaa */, 1 /* 0xab */, + 1 /* 0xac */, 1 /* 0xad */, 1 /* 0xae */, 1 /* 0xaf */, + 1 /* 0xb0 */, 1 /* 0xb1 */, 1 /* 0xb2 */, 1 /* 0xb3 */, + 1 /* 0xb4 */, 1 /* 0xb5 */, 1 /* 0xb6 */, 1 /* 0xb7 */, + 1 /* 0xb8 */, 1 /* 0xb9 */, 1 /* 0xba */, 1 /* 0xbb */, + 1 /* 0xbc */, 1 /* 0xbd */, 1 /* 0xbe */, 1 /* 0xbf */, + 1 /* 0xc0 */, 1 /* 0xc1 */, 1 /* 0xc2 */, 1 /* 0xc3 */, + 1 /* 0xc4 */, 1 /* 0xc5 */, 1 /* 0xc6 */, 1 /* 0xc7 */, + 1 /* 0xc8 */, 1 /* 0xc9 */, 1 /* 0xca */, 1 /* 0xcb */, + 1 /* 0xcc */, 1 /* 0xcd */, 1 /* 0xce */, 1 /* 0xcf */, + 1 /* 0xd0 */, 1 /* 0xd1 */, 1 /* 0xd2 */, 1 /* 0xd3 */, + 1 /* 0xd4 */, 1 /* 0xd5 */, 1 /* 0xd6 */, 1 /* 0xd7 */, + 1 /* 0xd8 */, 1 /* 0xd9 */, 1 /* 0xda */, 1 /* 0xdb */, + 1 /* 0xdc */, 1 /* 0xdd */, 1 /* 0xde */, 1 /* 0xdf */, + 1 /* 0xe0 */, 1 /* 0xe1 */, 1 /* 0xe2 */, 1 /* 0xe3 */, + 1 /* 0xe4 */, 1 /* 0xe5 */, 1 /* 0xe6 */, 1 /* 0xe7 */, + 1 /* 0xe8 */, 1 /* 0xe9 */, 1 /* 0xea */, 1 /* 0xeb */, + 1 /* 0xec */, 1 /* 0xed */, 1 /* 0xee */, 1 /* 0xef */, + 1 /* 0xf0 */, 1 /* 0xf1 */, 1 /* 0xf2 */, 1 /* 0xf3 */, + 1 /* 0xf4 */, 1 /* 0xf5 */, 1 /* 0xf6 */, 1 /* 0xf7 */, + 1 /* 0xf8 */, 1 /* 0xf9 */, 1 /* 0xfa */, 1 /* 0xfb */, + 1 /* 0xfc */, 1 /* 0xfd */, 1 /* 0xfe */, 1 /* 0xff */ +}; + +static int check_path(const uint8_t *value, size_t len) { + const uint8_t *last; + for (last = value + len; value != last; ++value) { + if (!VALID_PATH_CHARS[*value]) { + return 0; + } + } + return 1; +} + +static int http_request_on_header(nghttp3_http_state *http, + nghttp3_qpack_nv *nv, int trailers, + int connect_protocol) { + nghttp3_pri pri; + + switch (nv->token) { + case NGHTTP3_QPACK_TOKEN__AUTHORITY: + if (!check_authority(nv->value->base, nv->value->len) || + !check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG__AUTHORITY)) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + break; + case NGHTTP3_QPACK_TOKEN__METHOD: + if (!check_method(nv->value->base, nv->value->len) || + !check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG__METHOD)) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + switch (nv->value->len) { + case 4: + if (lstreq("HEAD", nv->value->base, nv->value->len)) { + http->flags |= NGHTTP3_HTTP_FLAG_METH_HEAD; + } + break; + case 7: + switch (nv->value->base[6]) { + case 'T': + if (lstreq("CONNECT", nv->value->base, nv->value->len)) { + http->flags |= NGHTTP3_HTTP_FLAG_METH_CONNECT; + } + break; + case 'S': + if (lstreq("OPTIONS", nv->value->base, nv->value->len)) { + http->flags |= NGHTTP3_HTTP_FLAG_METH_OPTIONS; + } + break; + } + break; + } + break; + case NGHTTP3_QPACK_TOKEN__PATH: + if (!check_path(nv->value->base, nv->value->len) || + !check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG__PATH)) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + if (nv->value->base[0] == '/') { + http->flags |= NGHTTP3_HTTP_FLAG_PATH_REGULAR; + } else if (nv->value->len == 1 && nv->value->base[0] == '*') { + http->flags |= NGHTTP3_HTTP_FLAG_PATH_ASTERISK; + } + break; + case NGHTTP3_QPACK_TOKEN__SCHEME: + if (!check_scheme(nv->value->base, nv->value->len) || + !check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG__SCHEME)) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + /* scheme is case-insensitive: + https://datatracker.ietf.org/doc/html/rfc3986#section-3.1 */ + if (lstrieq("http", nv->value->base, nv->value->len) || + lstrieq("https", nv->value->base, nv->value->len)) { + http->flags |= NGHTTP3_HTTP_FLAG_SCHEME_HTTP; + } + break; + case NGHTTP3_QPACK_TOKEN__PROTOCOL: + if (!connect_protocol || + !nghttp3_check_header_value(nv->value->base, nv->value->len) || + !check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG__PROTOCOL)) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + break; + case NGHTTP3_QPACK_TOKEN_HOST: + if (!check_authority(nv->value->base, nv->value->len)) { + return NGHTTP3_ERR_REMOVE_HTTP_HEADER; + } + if (!check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG_HOST)) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + break; + case NGHTTP3_QPACK_TOKEN_CONTENT_LENGTH: { + /* https://tools.ietf.org/html/rfc7230#section-4.1.2: A sender + MUST NOT generate a trailer that contains a field necessary for + message framing (e.g., Transfer-Encoding and Content-Length), + ... */ + if (trailers) { + return NGHTTP3_ERR_REMOVE_HTTP_HEADER; + } + if (http->content_length != -1) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + http->content_length = parse_uint(nv->value->base, nv->value->len); + if (http->content_length == -1) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + break; + } + /* disallowed header fields */ + case NGHTTP3_QPACK_TOKEN_CONNECTION: + case NGHTTP3_QPACK_TOKEN_KEEP_ALIVE: + case NGHTTP3_QPACK_TOKEN_PROXY_CONNECTION: + case NGHTTP3_QPACK_TOKEN_TRANSFER_ENCODING: + case NGHTTP3_QPACK_TOKEN_UPGRADE: + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + case NGHTTP3_QPACK_TOKEN_TE: + if (!lstrieq("trailers", nv->value->base, nv->value->len)) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + break; + case NGHTTP3_QPACK_TOKEN_PRIORITY: + if (!nghttp3_check_header_value(nv->value->base, nv->value->len)) { + return NGHTTP3_ERR_REMOVE_HTTP_HEADER; + } + + if (trailers || (http->flags & NGHTTP3_HTTP_FLAG_BAD_PRIORITY)) { + break; + } + + pri = http->pri; + + if (nghttp3_http_parse_priority(&pri, nv->value->base, nv->value->len) == + 0) { + http->pri = pri; + http->flags |= NGHTTP3_HTTP_FLAG_PRIORITY; + break; + } + + http->flags &= ~NGHTTP3_HTTP_FLAG_PRIORITY; + http->flags |= NGHTTP3_HTTP_FLAG_BAD_PRIORITY; + + break; + default: + if (nv->name->base[0] == ':') { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + + if (!nghttp3_check_header_value(nv->value->base, nv->value->len)) { + return NGHTTP3_ERR_REMOVE_HTTP_HEADER; + } + } + + return 0; +} + +static int http_response_on_header(nghttp3_http_state *http, + nghttp3_qpack_nv *nv, int trailers) { + switch (nv->token) { + case NGHTTP3_QPACK_TOKEN__STATUS: { + if (!check_pseudo_header(http, nv, NGHTTP3_HTTP_FLAG__STATUS) || + nv->value->len != 3) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + http->status_code = (int16_t)parse_uint(nv->value->base, nv->value->len); + if (http->status_code < 100 || http->status_code == 101) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + break; + } + case NGHTTP3_QPACK_TOKEN_CONTENT_LENGTH: { + /* https://tools.ietf.org/html/rfc7230#section-4.1.2: A sender + MUST NOT generate a trailer that contains a field necessary for + message framing (e.g., Transfer-Encoding and Content-Length), + ... */ + if (trailers) { + return NGHTTP3_ERR_REMOVE_HTTP_HEADER; + } + if (http->status_code == 204) { + /* content-length header field in 204 response is prohibited by + RFC 7230. But some widely used servers send content-length: + 0. Until they get fixed, we ignore it. */ + if (/* Found multiple content-length field */ + http->content_length != -1 || + !lstrieq("0", nv->value->base, nv->value->len)) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + http->content_length = 0; + return NGHTTP3_ERR_REMOVE_HTTP_HEADER; + } + if (http->status_code / 100 == 1 || + /* https://tools.ietf.org/html/rfc7230#section-3.3.3 */ + (http->status_code / 100 == 2 && + (http->flags & NGHTTP3_HTTP_FLAG_METH_CONNECT))) { + return NGHTTP3_ERR_REMOVE_HTTP_HEADER; + } + if (http->content_length != -1) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + http->content_length = parse_uint(nv->value->base, nv->value->len); + if (http->content_length == -1) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + break; + } + /* disallowed header fields */ + case NGHTTP3_QPACK_TOKEN_CONNECTION: + case NGHTTP3_QPACK_TOKEN_KEEP_ALIVE: + case NGHTTP3_QPACK_TOKEN_PROXY_CONNECTION: + case NGHTTP3_QPACK_TOKEN_TRANSFER_ENCODING: + case NGHTTP3_QPACK_TOKEN_UPGRADE: + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + case NGHTTP3_QPACK_TOKEN_TE: + if (!lstrieq("trailers", nv->value->base, nv->value->len)) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + break; + default: + if (nv->name->base[0] == ':') { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + + if (!nghttp3_check_header_value(nv->value->base, nv->value->len)) { + return NGHTTP3_ERR_REMOVE_HTTP_HEADER; + } + } + + return 0; +} + +static int http_check_nonempty_header_name(const uint8_t *name, size_t len); + +int nghttp3_http_on_header(nghttp3_http_state *http, nghttp3_qpack_nv *nv, + int request, int trailers, int connect_protocol) { + if (nv->name->len == 0) { + http->flags |= NGHTTP3_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED; + + return NGHTTP3_ERR_REMOVE_HTTP_HEADER; + } + + if (nv->name->base[0] == ':') { + /* pseudo header must have a valid token. */ + if (nv->token == -1 || trailers || + (http->flags & NGHTTP3_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED)) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + } else { + http->flags |= NGHTTP3_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED; + + switch (http_check_nonempty_header_name(nv->name->base, nv->name->len)) { + case 0: + return NGHTTP3_ERR_REMOVE_HTTP_HEADER; + case -1: + /* header field name must be lower-cased without exception */ + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + } + + assert(nv->name->len > 0); + + if (request) { + return http_request_on_header(http, nv, trailers, connect_protocol); + } + + return http_response_on_header(http, nv, trailers); +} + +int nghttp3_http_on_request_headers(nghttp3_http_state *http) { + if (!(http->flags & NGHTTP3_HTTP_FLAG__PROTOCOL) && + (http->flags & NGHTTP3_HTTP_FLAG_METH_CONNECT)) { + if ((http->flags & (NGHTTP3_HTTP_FLAG__SCHEME | NGHTTP3_HTTP_FLAG__PATH)) || + (http->flags & NGHTTP3_HTTP_FLAG__AUTHORITY) == 0) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + http->content_length = -1; + } else { + if ((http->flags & NGHTTP3_HTTP_FLAG_REQ_HEADERS) != + NGHTTP3_HTTP_FLAG_REQ_HEADERS || + (http->flags & + (NGHTTP3_HTTP_FLAG__AUTHORITY | NGHTTP3_HTTP_FLAG_HOST)) == 0) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + if ((http->flags & NGHTTP3_HTTP_FLAG__PROTOCOL) && + ((http->flags & NGHTTP3_HTTP_FLAG_METH_CONNECT) == 0 || + (http->flags & NGHTTP3_HTTP_FLAG__AUTHORITY) == 0)) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + if (!check_path_flags(http)) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + } + + return 0; +} + +int nghttp3_http_on_response_headers(nghttp3_http_state *http) { + if ((http->flags & NGHTTP3_HTTP_FLAG__STATUS) == 0) { + return NGHTTP3_ERR_MALFORMED_HTTP_HEADER; + } + + if (http->status_code / 100 == 1) { + /* non-final response */ + http->flags = (http->flags & NGHTTP3_HTTP_FLAG_METH_ALL) | + NGHTTP3_HTTP_FLAG_EXPECT_FINAL_RESPONSE; + http->content_length = -1; + http->status_code = -1; + return 0; + } + + http->flags &= ~NGHTTP3_HTTP_FLAG_EXPECT_FINAL_RESPONSE; + + if (!expect_response_body(http)) { + http->content_length = 0; + } else if (http->flags & NGHTTP3_HTTP_FLAG_METH_CONNECT) { + http->content_length = -1; + } + + return 0; +} + +int nghttp3_http_on_remote_end_stream(nghttp3_stream *stream) { + if ((stream->rx.http.flags & NGHTTP3_HTTP_FLAG_EXPECT_FINAL_RESPONSE) || + (stream->rx.http.content_length != -1 && + stream->rx.http.content_length != stream->rx.http.recv_content_length)) { + return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING; + } + + return 0; +} + +int nghttp3_http_on_data_chunk(nghttp3_stream *stream, size_t n) { + stream->rx.http.recv_content_length += (int64_t)n; + + if ((stream->rx.http.flags & NGHTTP3_HTTP_FLAG_EXPECT_FINAL_RESPONSE) || + (stream->rx.http.content_length != -1 && + stream->rx.http.recv_content_length > stream->rx.http.content_length)) { + return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING; + } + + return 0; +} + +void nghttp3_http_record_request_method(nghttp3_stream *stream, + const nghttp3_nv *nva, size_t nvlen) { + size_t i; + const nghttp3_nv *nv; + + /* TODO we should do this strictly. */ + for (i = 0; i < nvlen; ++i) { + nv = &nva[i]; + if (!(nv->namelen == 7 && nv->name[6] == 'd' && + memcmp(":metho", nv->name, nv->namelen - 1) == 0)) { + continue; + } + if (lstreq("CONNECT", nv->value, nv->valuelen)) { + stream->rx.http.flags |= NGHTTP3_HTTP_FLAG_METH_CONNECT; + return; + } + if (lstreq("HEAD", nv->value, nv->valuelen)) { + stream->rx.http.flags |= NGHTTP3_HTTP_FLAG_METH_HEAD; + return; + } + return; + } +} + +/* Generated by gennmchartbl.py */ +static const int VALID_HD_NAME_CHARS[] = { + 0 /* NUL */, 0 /* SOH */, 0 /* STX */, 0 /* ETX */, 0 /* EOT */, + 0 /* ENQ */, 0 /* ACK */, 0 /* BEL */, 0 /* BS */, 0 /* HT */, + 0 /* LF */, 0 /* VT */, 0 /* FF */, 0 /* CR */, 0 /* SO */, + 0 /* SI */, 0 /* DLE */, 0 /* DC1 */, 0 /* DC2 */, 0 /* DC3 */, + 0 /* DC4 */, 0 /* NAK */, 0 /* SYN */, 0 /* ETB */, 0 /* CAN */, + 0 /* EM */, 0 /* SUB */, 0 /* ESC */, 0 /* FS */, 0 /* GS */, + 0 /* RS */, 0 /* US */, 0 /* SPC */, 1 /* ! */, 0 /* " */, + 1 /* # */, 1 /* $ */, 1 /* % */, 1 /* & */, 1 /* ' */, + 0 /* ( */, 0 /* ) */, 1 /* * */, 1 /* + */, 0 /* , */, + 1 /* - */, 1 /* . */, 0 /* / */, 1 /* 0 */, 1 /* 1 */, + 1 /* 2 */, 1 /* 3 */, 1 /* 4 */, 1 /* 5 */, 1 /* 6 */, + 1 /* 7 */, 1 /* 8 */, 1 /* 9 */, 0 /* : */, 0 /* ; */, + 0 /* < */, 0 /* = */, 0 /* > */, 0 /* ? */, 0 /* @ */, + -1 /* A */, -1 /* B */, -1 /* C */, -1 /* D */, -1 /* E */, + -1 /* F */, -1 /* G */, -1 /* H */, -1 /* I */, -1 /* J */, + -1 /* K */, -1 /* L */, -1 /* M */, -1 /* N */, -1 /* O */, + -1 /* P */, -1 /* Q */, -1 /* R */, -1 /* S */, -1 /* T */, + -1 /* U */, -1 /* V */, -1 /* W */, -1 /* X */, -1 /* Y */, + -1 /* Z */, 0 /* [ */, 0 /* \ */, 0 /* ] */, 1 /* ^ */, + 1 /* _ */, 1 /* ` */, 1 /* a */, 1 /* b */, 1 /* c */, + 1 /* d */, 1 /* e */, 1 /* f */, 1 /* g */, 1 /* h */, + 1 /* i */, 1 /* j */, 1 /* k */, 1 /* l */, 1 /* m */, + 1 /* n */, 1 /* o */, 1 /* p */, 1 /* q */, 1 /* r */, + 1 /* s */, 1 /* t */, 1 /* u */, 1 /* v */, 1 /* w */, + 1 /* x */, 1 /* y */, 1 /* z */, 0 /* { */, 1 /* | */, + 0 /* } */, 1 /* ~ */, 0 /* DEL */, 0 /* 0x80 */, 0 /* 0x81 */, + 0 /* 0x82 */, 0 /* 0x83 */, 0 /* 0x84 */, 0 /* 0x85 */, 0 /* 0x86 */, + 0 /* 0x87 */, 0 /* 0x88 */, 0 /* 0x89 */, 0 /* 0x8a */, 0 /* 0x8b */, + 0 /* 0x8c */, 0 /* 0x8d */, 0 /* 0x8e */, 0 /* 0x8f */, 0 /* 0x90 */, + 0 /* 0x91 */, 0 /* 0x92 */, 0 /* 0x93 */, 0 /* 0x94 */, 0 /* 0x95 */, + 0 /* 0x96 */, 0 /* 0x97 */, 0 /* 0x98 */, 0 /* 0x99 */, 0 /* 0x9a */, + 0 /* 0x9b */, 0 /* 0x9c */, 0 /* 0x9d */, 0 /* 0x9e */, 0 /* 0x9f */, + 0 /* 0xa0 */, 0 /* 0xa1 */, 0 /* 0xa2 */, 0 /* 0xa3 */, 0 /* 0xa4 */, + 0 /* 0xa5 */, 0 /* 0xa6 */, 0 /* 0xa7 */, 0 /* 0xa8 */, 0 /* 0xa9 */, + 0 /* 0xaa */, 0 /* 0xab */, 0 /* 0xac */, 0 /* 0xad */, 0 /* 0xae */, + 0 /* 0xaf */, 0 /* 0xb0 */, 0 /* 0xb1 */, 0 /* 0xb2 */, 0 /* 0xb3 */, + 0 /* 0xb4 */, 0 /* 0xb5 */, 0 /* 0xb6 */, 0 /* 0xb7 */, 0 /* 0xb8 */, + 0 /* 0xb9 */, 0 /* 0xba */, 0 /* 0xbb */, 0 /* 0xbc */, 0 /* 0xbd */, + 0 /* 0xbe */, 0 /* 0xbf */, 0 /* 0xc0 */, 0 /* 0xc1 */, 0 /* 0xc2 */, + 0 /* 0xc3 */, 0 /* 0xc4 */, 0 /* 0xc5 */, 0 /* 0xc6 */, 0 /* 0xc7 */, + 0 /* 0xc8 */, 0 /* 0xc9 */, 0 /* 0xca */, 0 /* 0xcb */, 0 /* 0xcc */, + 0 /* 0xcd */, 0 /* 0xce */, 0 /* 0xcf */, 0 /* 0xd0 */, 0 /* 0xd1 */, + 0 /* 0xd2 */, 0 /* 0xd3 */, 0 /* 0xd4 */, 0 /* 0xd5 */, 0 /* 0xd6 */, + 0 /* 0xd7 */, 0 /* 0xd8 */, 0 /* 0xd9 */, 0 /* 0xda */, 0 /* 0xdb */, + 0 /* 0xdc */, 0 /* 0xdd */, 0 /* 0xde */, 0 /* 0xdf */, 0 /* 0xe0 */, + 0 /* 0xe1 */, 0 /* 0xe2 */, 0 /* 0xe3 */, 0 /* 0xe4 */, 0 /* 0xe5 */, + 0 /* 0xe6 */, 0 /* 0xe7 */, 0 /* 0xe8 */, 0 /* 0xe9 */, 0 /* 0xea */, + 0 /* 0xeb */, 0 /* 0xec */, 0 /* 0xed */, 0 /* 0xee */, 0 /* 0xef */, + 0 /* 0xf0 */, 0 /* 0xf1 */, 0 /* 0xf2 */, 0 /* 0xf3 */, 0 /* 0xf4 */, + 0 /* 0xf5 */, 0 /* 0xf6 */, 0 /* 0xf7 */, 0 /* 0xf8 */, 0 /* 0xf9 */, + 0 /* 0xfa */, 0 /* 0xfb */, 0 /* 0xfc */, 0 /* 0xfd */, 0 /* 0xfe */, + 0 /* 0xff */, +}; + +int nghttp3_check_header_name(const uint8_t *name, size_t len) { + const uint8_t *last; + if (len == 0) { + return 0; + } + if (*name == ':') { + if (len == 1) { + return 0; + } + ++name; + --len; + } + for (last = name + len; name != last; ++name) { + if (!VALID_HD_NAME_CHARS[*name]) { + return 0; + } + } + return 1; +} + +/* http_check_nonempty_header_name validates regular header name + pointed by |name| of length |len|. |len| must be greater than + zero. This function returns 1 if it succeeds, or -1 if the name + contains a character in [A-Z], otherwise 0. */ +static int http_check_nonempty_header_name(const uint8_t *name, size_t len) { + const uint8_t *last; + int rv; + + for (last = name + len; name != last; ++name) { + rv = VALID_HD_NAME_CHARS[*name]; + if (rv != 1) { + return rv; + } + } + + return 1; +} + +/* Generated by genvchartbl.py */ +static const int VALID_HD_VALUE_CHARS[] = { + 0 /* NUL */, 0 /* SOH */, 0 /* STX */, 0 /* ETX */, + 0 /* EOT */, 0 /* ENQ */, 0 /* ACK */, 0 /* BEL */, + 0 /* BS */, 1 /* HT */, 0 /* LF */, 0 /* VT */, + 0 /* FF */, 0 /* CR */, 0 /* SO */, 0 /* SI */, + 0 /* DLE */, 0 /* DC1 */, 0 /* DC2 */, 0 /* DC3 */, + 0 /* DC4 */, 0 /* NAK */, 0 /* SYN */, 0 /* ETB */, + 0 /* CAN */, 0 /* EM */, 0 /* SUB */, 0 /* ESC */, + 0 /* FS */, 0 /* GS */, 0 /* RS */, 0 /* US */, + 1 /* SPC */, 1 /* ! */, 1 /* " */, 1 /* # */, + 1 /* $ */, 1 /* % */, 1 /* & */, 1 /* ' */, + 1 /* ( */, 1 /* ) */, 1 /* * */, 1 /* + */, + 1 /* , */, 1 /* - */, 1 /* . */, 1 /* / */, + 1 /* 0 */, 1 /* 1 */, 1 /* 2 */, 1 /* 3 */, + 1 /* 4 */, 1 /* 5 */, 1 /* 6 */, 1 /* 7 */, + 1 /* 8 */, 1 /* 9 */, 1 /* : */, 1 /* ; */, + 1 /* < */, 1 /* = */, 1 /* > */, 1 /* ? */, + 1 /* @ */, 1 /* A */, 1 /* B */, 1 /* C */, + 1 /* D */, 1 /* E */, 1 /* F */, 1 /* G */, + 1 /* H */, 1 /* I */, 1 /* J */, 1 /* K */, + 1 /* L */, 1 /* M */, 1 /* N */, 1 /* O */, + 1 /* P */, 1 /* Q */, 1 /* R */, 1 /* S */, + 1 /* T */, 1 /* U */, 1 /* V */, 1 /* W */, + 1 /* X */, 1 /* Y */, 1 /* Z */, 1 /* [ */, + 1 /* \ */, 1 /* ] */, 1 /* ^ */, 1 /* _ */, + 1 /* ` */, 1 /* a */, 1 /* b */, 1 /* c */, + 1 /* d */, 1 /* e */, 1 /* f */, 1 /* g */, + 1 /* h */, 1 /* i */, 1 /* j */, 1 /* k */, + 1 /* l */, 1 /* m */, 1 /* n */, 1 /* o */, + 1 /* p */, 1 /* q */, 1 /* r */, 1 /* s */, + 1 /* t */, 1 /* u */, 1 /* v */, 1 /* w */, + 1 /* x */, 1 /* y */, 1 /* z */, 1 /* { */, + 1 /* | */, 1 /* } */, 1 /* ~ */, 0 /* DEL */, + 1 /* 0x80 */, 1 /* 0x81 */, 1 /* 0x82 */, 1 /* 0x83 */, + 1 /* 0x84 */, 1 /* 0x85 */, 1 /* 0x86 */, 1 /* 0x87 */, + 1 /* 0x88 */, 1 /* 0x89 */, 1 /* 0x8a */, 1 /* 0x8b */, + 1 /* 0x8c */, 1 /* 0x8d */, 1 /* 0x8e */, 1 /* 0x8f */, + 1 /* 0x90 */, 1 /* 0x91 */, 1 /* 0x92 */, 1 /* 0x93 */, + 1 /* 0x94 */, 1 /* 0x95 */, 1 /* 0x96 */, 1 /* 0x97 */, + 1 /* 0x98 */, 1 /* 0x99 */, 1 /* 0x9a */, 1 /* 0x9b */, + 1 /* 0x9c */, 1 /* 0x9d */, 1 /* 0x9e */, 1 /* 0x9f */, + 1 /* 0xa0 */, 1 /* 0xa1 */, 1 /* 0xa2 */, 1 /* 0xa3 */, + 1 /* 0xa4 */, 1 /* 0xa5 */, 1 /* 0xa6 */, 1 /* 0xa7 */, + 1 /* 0xa8 */, 1 /* 0xa9 */, 1 /* 0xaa */, 1 /* 0xab */, + 1 /* 0xac */, 1 /* 0xad */, 1 /* 0xae */, 1 /* 0xaf */, + 1 /* 0xb0 */, 1 /* 0xb1 */, 1 /* 0xb2 */, 1 /* 0xb3 */, + 1 /* 0xb4 */, 1 /* 0xb5 */, 1 /* 0xb6 */, 1 /* 0xb7 */, + 1 /* 0xb8 */, 1 /* 0xb9 */, 1 /* 0xba */, 1 /* 0xbb */, + 1 /* 0xbc */, 1 /* 0xbd */, 1 /* 0xbe */, 1 /* 0xbf */, + 1 /* 0xc0 */, 1 /* 0xc1 */, 1 /* 0xc2 */, 1 /* 0xc3 */, + 1 /* 0xc4 */, 1 /* 0xc5 */, 1 /* 0xc6 */, 1 /* 0xc7 */, + 1 /* 0xc8 */, 1 /* 0xc9 */, 1 /* 0xca */, 1 /* 0xcb */, + 1 /* 0xcc */, 1 /* 0xcd */, 1 /* 0xce */, 1 /* 0xcf */, + 1 /* 0xd0 */, 1 /* 0xd1 */, 1 /* 0xd2 */, 1 /* 0xd3 */, + 1 /* 0xd4 */, 1 /* 0xd5 */, 1 /* 0xd6 */, 1 /* 0xd7 */, + 1 /* 0xd8 */, 1 /* 0xd9 */, 1 /* 0xda */, 1 /* 0xdb */, + 1 /* 0xdc */, 1 /* 0xdd */, 1 /* 0xde */, 1 /* 0xdf */, + 1 /* 0xe0 */, 1 /* 0xe1 */, 1 /* 0xe2 */, 1 /* 0xe3 */, + 1 /* 0xe4 */, 1 /* 0xe5 */, 1 /* 0xe6 */, 1 /* 0xe7 */, + 1 /* 0xe8 */, 1 /* 0xe9 */, 1 /* 0xea */, 1 /* 0xeb */, + 1 /* 0xec */, 1 /* 0xed */, 1 /* 0xee */, 1 /* 0xef */, + 1 /* 0xf0 */, 1 /* 0xf1 */, 1 /* 0xf2 */, 1 /* 0xf3 */, + 1 /* 0xf4 */, 1 /* 0xf5 */, 1 /* 0xf6 */, 1 /* 0xf7 */, + 1 /* 0xf8 */, 1 /* 0xf9 */, 1 /* 0xfa */, 1 /* 0xfb */, + 1 /* 0xfc */, 1 /* 0xfd */, 1 /* 0xfe */, 1 /* 0xff */ +}; + +#ifdef __AVX2__ +static int contains_bad_header_value_char_avx2(const uint8_t *first, + const uint8_t *last) { + const __m256i ctll = _mm256_set1_epi8(0x00 - 1); + const __m256i ctlr = _mm256_set1_epi8(0x1f + 1); + const __m256i ht = _mm256_set1_epi8('\t'); + const __m256i del = _mm256_set1_epi8(0x7f); + __m256i s, x; + uint32_t m; + + for (; first != last; first += 32) { + s = _mm256_loadu_si256((void *)first); + + x = _mm256_andnot_si256( + _mm256_cmpeq_epi8(s, ht), + _mm256_and_si256(_mm256_cmpgt_epi8(s, ctll), _mm256_cmpgt_epi8(ctlr, s))); + x = _mm256_or_si256(_mm256_cmpeq_epi8(s, del), x); + + m = (uint32_t)_mm256_movemask_epi8(x); + if (m) { + return 1; + } + } + + return 0; +} +#endif /* __AVX2__ */ + +int nghttp3_check_header_value(const uint8_t *value, size_t len) { + const uint8_t *last; +#ifdef __AVX2__ + const uint8_t *last32; +#endif /* __AVX2__ */ + + switch (len) { + case 0: + return 1; + case 1: + return !is_ws(*value); + default: + if (is_ws(*value) || is_ws(*(value + len - 1))) { + return 0; + } + } + + last = value + len; + +#ifdef __AVX2__ + if (len >= 32) { + last32 = value + (len & ~0x1fu); + if (contains_bad_header_value_char_avx2(value, last32)) { + return 0; + } + + value = last32; + } +#endif /* __AVX2__ */ + + for (; value != last; ++value) { + if (!VALID_HD_VALUE_CHARS[*value]) { + return 0; + } + } + return 1; +} + +int nghttp3_pri_eq(const nghttp3_pri *a, const nghttp3_pri *b) { + return a->urgency == b->urgency && a->inc == b->inc; +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_http.h b/contrib/libs/nghttp3/lib/nghttp3_http.h new file mode 100644 index 0000000000..f0bfc69fba --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_http.h @@ -0,0 +1,173 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2015 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_HTTP_H +#define NGHTTP3_HTTP_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +typedef struct nghttp3_stream nghttp3_stream; + +typedef struct nghttp3_http_state nghttp3_http_state; + +/* HTTP related flags to enforce HTTP semantics */ + +/* NGHTTP3_HTTP_FLAG_NONE indicates that no flag is set. */ +#define NGHTTP3_HTTP_FLAG_NONE 0x00u +/* header field seen so far */ +#define NGHTTP3_HTTP_FLAG__AUTHORITY 0x01u +#define NGHTTP3_HTTP_FLAG__PATH 0x02u +#define NGHTTP3_HTTP_FLAG__METHOD 0x04u +#define NGHTTP3_HTTP_FLAG__SCHEME 0x08u +/* host is not pseudo header, but we require either host or + :authority */ +#define NGHTTP3_HTTP_FLAG_HOST 0x10u +#define NGHTTP3_HTTP_FLAG__STATUS 0x20u +/* required header fields for HTTP request except for CONNECT + method. */ +#define NGHTTP3_HTTP_FLAG_REQ_HEADERS \ + (NGHTTP3_HTTP_FLAG__METHOD | NGHTTP3_HTTP_FLAG__PATH | \ + NGHTTP3_HTTP_FLAG__SCHEME) +#define NGHTTP3_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED 0x40u +/* HTTP method flags */ +#define NGHTTP3_HTTP_FLAG_METH_CONNECT 0x80u +#define NGHTTP3_HTTP_FLAG_METH_HEAD 0x0100u +#define NGHTTP3_HTTP_FLAG_METH_OPTIONS 0x0200u +#define NGHTTP3_HTTP_FLAG_METH_ALL \ + (NGHTTP3_HTTP_FLAG_METH_CONNECT | NGHTTP3_HTTP_FLAG_METH_HEAD | \ + NGHTTP3_HTTP_FLAG_METH_OPTIONS) +/* :path category */ +/* path starts with "/" */ +#define NGHTTP3_HTTP_FLAG_PATH_REGULAR 0x0400u +/* path "*" */ +#define NGHTTP3_HTTP_FLAG_PATH_ASTERISK 0x0800u +/* scheme */ +/* "http" or "https" scheme */ +#define NGHTTP3_HTTP_FLAG_SCHEME_HTTP 0x1000u +/* set if final response is expected */ +#define NGHTTP3_HTTP_FLAG_EXPECT_FINAL_RESPONSE 0x2000u +/* NGHTTP3_HTTP_FLAG__PROTOCOL is set when :protocol pseudo header + field is seen. */ +#define NGHTTP3_HTTP_FLAG__PROTOCOL 0x4000u +/* NGHTTP3_HTTP_FLAG_PRIORITY is set when priority header field is + processed. */ +#define NGHTTP3_HTTP_FLAG_PRIORITY 0x8000u +/* NGHTTP3_HTTP_FLAG_BAD_PRIORITY is set when an error is encountered + while parsing priority header field. */ +#define NGHTTP3_HTTP_FLAG_BAD_PRIORITY 0x010000u + +/* + * This function is called when HTTP header field |nv| received for + * |http|. This function will validate |nv| against the current state + * of stream. Pass nonzero if this is request headers. Pass nonzero + * to |trailers| if |nv| is included in trailers. |connect_protocol| + * is nonzero if Extended CONNECT Method is enabled. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_MALFORMED_HTTP_HEADER + * Invalid HTTP header field was received. + * NGHTTP3_ERR_REMOVE_HTTP_HEADER + * Invalid HTTP header field was received but it can be treated as + * if it was not received because of compatibility reasons. + */ +int nghttp3_http_on_header(nghttp3_http_state *http, nghttp3_qpack_nv *nv, + int request, int trailers, int connect_protocol); + +/* + * This function is called when request header is received. This + * function performs validation and returns 0 if it succeeds, or one + * of the following negative error codes: + * + * NGHTTP3_ERR_MALFORMED_HTTP_HEADER + * Required HTTP header field was not received; or an invalid + * header field was received. + */ +int nghttp3_http_on_request_headers(nghttp3_http_state *http); + +/* + * This function is called when response header is received. This + * function performs validation and returns 0 if it succeeds, or one + * of the following negative error codes: + * + * NGHTTP3_ERR_MALFORMED_HTTP_HEADER + * Required HTTP header field was not received; or an invalid + * header field was received. + */ +int nghttp3_http_on_response_headers(nghttp3_http_state *http); + +/* + * This function is called when read side stream is closed. This + * function performs validation and returns 0 if it succeeds, or one + * of the following negative error codes: + * + * NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING + * HTTP messaging is violated. + */ +int nghttp3_http_on_remote_end_stream(nghttp3_stream *stream); + +/* + * This function is called when chunk of data is received. This + * function performs validation and returns 0 if it succeeds, or one + * of the following negative error codes: + * + * NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING + * HTTP messaging is violated. + */ +int nghttp3_http_on_data_chunk(nghttp3_stream *stream, size_t n); + +/* + * This function inspects header fields in |nva| of length |nvlen| and + * records its method in stream->http_flags. + */ +void nghttp3_http_record_request_method(nghttp3_stream *stream, + const nghttp3_nv *nva, size_t nvlen); + +/** + * @function + * + * `nghttp3_http_parse_priority` parses priority HTTP header field + * stored in the buffer pointed by |value| of length |len|. If it + * successfully processed header field value, it stores the result + * into |*dest|. This function just overwrites what it sees in the + * header field value and does not initialize any field in |*dest|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_INVALID_ARGUMENT` + * The function could not parse the provided value. + */ +int nghttp3_http_parse_priority(nghttp3_pri *dest, const uint8_t *value, + size_t len); + +int nghttp3_pri_eq(const nghttp3_pri *a, const nghttp3_pri *b); + +#endif /* !defined(NGHTTP3_HTTP_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_idtr.c b/contrib/libs/nghttp3/lib/nghttp3_idtr.c new file mode 100644 index 0000000000..ffed3064d2 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_idtr.c @@ -0,0 +1,67 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_idtr.h" + +#include <assert.h> + +void nghttp3_idtr_init(nghttp3_idtr *idtr, const nghttp3_mem *mem) { + nghttp3_gaptr_init(&idtr->gap, mem); +} + +void nghttp3_idtr_free(nghttp3_idtr *idtr) { + if (idtr == NULL) { + return; + } + + nghttp3_gaptr_free(&idtr->gap); +} + +/* + * id_from_stream_id translates |stream_id| to an internal ID. + */ +static uint64_t id_from_stream_id(int64_t stream_id) { + return (uint64_t)(stream_id >> 2); +} + +int nghttp3_idtr_open(nghttp3_idtr *idtr, int64_t stream_id) { + uint64_t q; + + q = id_from_stream_id(stream_id); + + if (nghttp3_gaptr_is_pushed(&idtr->gap, q, 1)) { + return NGHTTP3_ERR_STREAM_IN_USE; + } + + return nghttp3_gaptr_push(&idtr->gap, q, 1); +} + +int nghttp3_idtr_is_open(nghttp3_idtr *idtr, int64_t stream_id) { + uint64_t q; + + q = id_from_stream_id(stream_id); + + return nghttp3_gaptr_is_pushed(&idtr->gap, q, 1); +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_idtr.h b/contrib/libs/nghttp3/lib/nghttp3_idtr.h new file mode 100644 index 0000000000..8ba15fc810 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_idtr.h @@ -0,0 +1,77 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_IDTR_H +#define NGHTTP3_IDTR_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_mem.h" +#include "nghttp3_gaptr.h" + +/* + * nghttp3_idtr tracks the usage of stream ID. + */ +typedef struct nghttp3_idtr { + /* gap maintains the range of an internal ID which is not used yet. + Initially, its range is [0, UINT64_MAX). The internal ID and + stream ID are in the different number spaces. See + id_from_stream_id to convert a stream ID to an internal ID. */ + nghttp3_gaptr gap; +} nghttp3_idtr; + +/* + * nghttp3_idtr_init initializes |idtr|. + */ +void nghttp3_idtr_init(nghttp3_idtr *idtr, const nghttp3_mem *mem); + +/* + * nghttp3_idtr_free frees resources allocated for |idtr|. + */ +void nghttp3_idtr_free(nghttp3_idtr *idtr); + +/* + * nghttp3_idtr_open claims that |stream_id| is in use. + * + * It returns 0 if it succeeds, or one of the following negative error + * codes: + * + * NGHTTP3_ERR_STREAM_IN_USE + * |stream_id| has already been used. + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_idtr_open(nghttp3_idtr *idtr, int64_t stream_id); + +/* + * nghttp3_idtr_open returns nonzero if |stream_id| is in use. + */ +int nghttp3_idtr_is_open(nghttp3_idtr *idtr, int64_t stream_id); + +#endif /* !defined(NGHTTP3_IDTR_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_ksl.c b/contrib/libs/nghttp3/lib/nghttp3_ksl.c new file mode 100644 index 0000000000..a3b5fbcb05 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_ksl.c @@ -0,0 +1,833 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_ksl.h" + +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <stdio.h> + +#include "nghttp3_macro.h" +#include "nghttp3_mem.h" +#include "nghttp3_range.h" + +static nghttp3_ksl_blk null_blk = {{{NULL, NULL, 0, 0, {0}}}}; + +nghttp3_objalloc_def(ksl_blk, nghttp3_ksl_blk, oplent); + +static size_t ksl_nodelen(size_t keylen) { + assert(keylen >= sizeof(uint64_t)); + + return (sizeof(nghttp3_ksl_node) + keylen - sizeof(uint64_t) + 0x7u) & + ~(uintptr_t)0x7u; +} + +static size_t ksl_blklen(size_t nodelen) { + return sizeof(nghttp3_ksl_blk) + nodelen * NGHTTP3_KSL_MAX_NBLK - + sizeof(uint64_t); +} + +/* + * ksl_node_set_key sets |key| to |node|. + */ +static void ksl_node_set_key(nghttp3_ksl *ksl, nghttp3_ksl_node *node, + const void *key) { + memcpy(node->key, key, ksl->keylen); +} + +void nghttp3_ksl_init(nghttp3_ksl *ksl, nghttp3_ksl_compar compar, + size_t keylen, const nghttp3_mem *mem) { + size_t nodelen = ksl_nodelen(keylen); + + nghttp3_objalloc_init(&ksl->blkalloc, + (ksl_blklen(nodelen) + 0xfu) & ~(uintptr_t)0xfu, mem); + + ksl->head = NULL; + ksl->front = ksl->back = NULL; + ksl->compar = compar; + ksl->n = 0; + ksl->keylen = keylen; + ksl->nodelen = nodelen; +} + +static nghttp3_ksl_blk *ksl_blk_objalloc_new(nghttp3_ksl *ksl) { + return nghttp3_objalloc_ksl_blk_len_get(&ksl->blkalloc, + ksl_blklen(ksl->nodelen)); +} + +static void ksl_blk_objalloc_del(nghttp3_ksl *ksl, nghttp3_ksl_blk *blk) { + nghttp3_objalloc_ksl_blk_release(&ksl->blkalloc, blk); +} + +static int ksl_head_init(nghttp3_ksl *ksl) { + nghttp3_ksl_blk *head = ksl_blk_objalloc_new(ksl); + + if (!head) { + return NGHTTP3_ERR_NOMEM; + } + + head->next = head->prev = NULL; + head->n = 0; + head->leaf = 1; + + ksl->head = head; + ksl->front = ksl->back = head; + + return 0; +} + +#ifdef NOMEMPOOL +/* + * ksl_free_blk frees |blk| recursively. + */ +static void ksl_free_blk(nghttp3_ksl *ksl, nghttp3_ksl_blk *blk) { + size_t i; + + if (!blk->leaf) { + for (i = 0; i < blk->n; ++i) { + ksl_free_blk(ksl, nghttp3_ksl_nth_node(ksl, blk, i)->blk); + } + } + + ksl_blk_objalloc_del(ksl, blk); +} +#endif /* defined(NOMEMPOOL) */ + +void nghttp3_ksl_free(nghttp3_ksl *ksl) { + if (!ksl || !ksl->head) { + return; + } + +#ifdef NOMEMPOOL + ksl_free_blk(ksl, ksl->head); +#endif /* defined(NOMEMPOOL) */ + + nghttp3_objalloc_free(&ksl->blkalloc); +} + +/* + * ksl_split_blk splits |blk| into 2 nghttp3_ksl_blk objects. The new + * nghttp3_ksl_blk is always the "right" block. + * + * It returns the pointer to the nghttp3_ksl_blk created which is the + * located at the right of |blk|, or NULL which indicates out of + * memory error. + */ +static nghttp3_ksl_blk *ksl_split_blk(nghttp3_ksl *ksl, nghttp3_ksl_blk *blk) { + nghttp3_ksl_blk *rblk; + + rblk = ksl_blk_objalloc_new(ksl); + if (rblk == NULL) { + return NULL; + } + + rblk->next = blk->next; + blk->next = rblk; + + if (rblk->next) { + rblk->next->prev = rblk; + } else if (ksl->back == blk) { + ksl->back = rblk; + } + + rblk->prev = blk; + rblk->leaf = blk->leaf; + + rblk->n = blk->n / 2; + blk->n -= rblk->n; + + memcpy(rblk->nodes, blk->nodes + ksl->nodelen * blk->n, + ksl->nodelen * rblk->n); + + assert(blk->n >= NGHTTP3_KSL_MIN_NBLK); + assert(rblk->n >= NGHTTP3_KSL_MIN_NBLK); + + return rblk; +} + +/* + * ksl_split_node splits a node included in |blk| at the position |i| + * into 2 adjacent nodes. The new node is always inserted at the + * position |i+1|. + * + * It returns 0 if it succeeds, or one of the following negative error + * codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +static int ksl_split_node(nghttp3_ksl *ksl, nghttp3_ksl_blk *blk, size_t i) { + nghttp3_ksl_node *node; + nghttp3_ksl_blk *lblk = nghttp3_ksl_nth_node(ksl, blk, i)->blk, *rblk; + + rblk = ksl_split_blk(ksl, lblk); + if (rblk == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + memmove(blk->nodes + (i + 2) * ksl->nodelen, + blk->nodes + (i + 1) * ksl->nodelen, + ksl->nodelen * (blk->n - (i + 1))); + + node = nghttp3_ksl_nth_node(ksl, blk, i + 1); + node->blk = rblk; + ++blk->n; + ksl_node_set_key(ksl, node, + nghttp3_ksl_nth_node(ksl, rblk, rblk->n - 1)->key); + + node = nghttp3_ksl_nth_node(ksl, blk, i); + ksl_node_set_key(ksl, node, + nghttp3_ksl_nth_node(ksl, lblk, lblk->n - 1)->key); + + return 0; +} + +/* + * ksl_split_head splits a head (root) block. It increases the height + * of skip list by 1. + * + * It returns 0 if it succeeds, or one of the following negative error + * codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +static int ksl_split_head(nghttp3_ksl *ksl) { + nghttp3_ksl_blk *rblk = NULL, *lblk, *nhead = NULL; + nghttp3_ksl_node *node; + + rblk = ksl_split_blk(ksl, ksl->head); + if (rblk == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + lblk = ksl->head; + + nhead = ksl_blk_objalloc_new(ksl); + + if (nhead == NULL) { + ksl_blk_objalloc_del(ksl, rblk); + return NGHTTP3_ERR_NOMEM; + } + + nhead->next = nhead->prev = NULL; + nhead->n = 2; + nhead->leaf = 0; + + node = nghttp3_ksl_nth_node(ksl, nhead, 0); + ksl_node_set_key(ksl, node, + nghttp3_ksl_nth_node(ksl, lblk, lblk->n - 1)->key); + node->blk = lblk; + + node = nghttp3_ksl_nth_node(ksl, nhead, 1); + ksl_node_set_key(ksl, node, + nghttp3_ksl_nth_node(ksl, rblk, rblk->n - 1)->key); + node->blk = rblk; + + ksl->head = nhead; + + return 0; +} + +/* + * ksl_insert_node inserts a node whose key is |key| with the + * associated |data| at the index of |i|. This function assumes that + * the number of nodes contained by |blk| is strictly less than + * NGHTTP3_KSL_MAX_NBLK. + */ +static void ksl_insert_node(nghttp3_ksl *ksl, nghttp3_ksl_blk *blk, size_t i, + const nghttp3_ksl_key *key, void *data) { + nghttp3_ksl_node *node; + + assert(blk->n < NGHTTP3_KSL_MAX_NBLK); + + memmove(blk->nodes + (i + 1) * ksl->nodelen, blk->nodes + i * ksl->nodelen, + ksl->nodelen * (blk->n - i)); + + node = nghttp3_ksl_nth_node(ksl, blk, i); + ksl_node_set_key(ksl, node, key); + node->data = data; + + ++blk->n; +} + +static size_t ksl_search(const nghttp3_ksl *ksl, nghttp3_ksl_blk *blk, + const nghttp3_ksl_key *key, + nghttp3_ksl_compar compar) { + size_t i; + nghttp3_ksl_node *node; + + for (i = 0, node = (nghttp3_ksl_node *)(void *)blk->nodes; + i < blk->n && compar((nghttp3_ksl_key *)node->key, key); + ++i, node = (nghttp3_ksl_node *)(void *)((uint8_t *)node + ksl->nodelen)) + ; + + return i; +} + +int nghttp3_ksl_insert(nghttp3_ksl *ksl, nghttp3_ksl_it *it, + const nghttp3_ksl_key *key, void *data) { + nghttp3_ksl_blk *blk; + nghttp3_ksl_node *node; + size_t i; + int rv; + + if (!ksl->head) { + rv = ksl_head_init(ksl); + if (rv != 0) { + return rv; + } + } + + if (ksl->head->n == NGHTTP3_KSL_MAX_NBLK) { + rv = ksl_split_head(ksl); + if (rv != 0) { + return rv; + } + } + + blk = ksl->head; + + for (;;) { + i = ksl_search(ksl, blk, key, ksl->compar); + + if (blk->leaf) { + if (i < blk->n && + !ksl->compar(key, nghttp3_ksl_nth_node(ksl, blk, i)->key)) { + if (it) { + *it = nghttp3_ksl_end(ksl); + } + + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + ksl_insert_node(ksl, blk, i, key, data); + ++ksl->n; + + if (it) { + nghttp3_ksl_it_init(it, ksl, blk, i); + } + + return 0; + } + + if (i == blk->n) { + /* This insertion extends the largest key in this subtree. */ + for (; !blk->leaf;) { + node = nghttp3_ksl_nth_node(ksl, blk, blk->n - 1); + if (node->blk->n == NGHTTP3_KSL_MAX_NBLK) { + rv = ksl_split_node(ksl, blk, blk->n - 1); + if (rv != 0) { + return rv; + } + + node = nghttp3_ksl_nth_node(ksl, blk, blk->n - 1); + } + + ksl_node_set_key(ksl, node, key); + blk = node->blk; + } + + ksl_insert_node(ksl, blk, blk->n, key, data); + ++ksl->n; + + if (it) { + nghttp3_ksl_it_init(it, ksl, blk, blk->n - 1); + } + + return 0; + } + + node = nghttp3_ksl_nth_node(ksl, blk, i); + + if (node->blk->n == NGHTTP3_KSL_MAX_NBLK) { + rv = ksl_split_node(ksl, blk, i); + if (rv != 0) { + return rv; + } + + if (ksl->compar((nghttp3_ksl_key *)node->key, key)) { + node = nghttp3_ksl_nth_node(ksl, blk, i + 1); + + if (ksl->compar((nghttp3_ksl_key *)node->key, key)) { + ksl_node_set_key(ksl, node, key); + } + } + } + + blk = node->blk; + } +} + +/* + * ksl_remove_node removes the node included in |blk| at the index of + * |i|. + */ +static void ksl_remove_node(nghttp3_ksl *ksl, nghttp3_ksl_blk *blk, size_t i) { + memmove(blk->nodes + i * ksl->nodelen, blk->nodes + (i + 1) * ksl->nodelen, + ksl->nodelen * (blk->n - (i + 1))); + + --blk->n; +} + +/* + * ksl_merge_node merges 2 nodes which are the nodes at the index of + * |i| and |i + 1|. + * + * If |blk| is the head (root) block and it contains just 2 nodes + * before merging nodes, the merged block becomes head block, which + * decreases the height of |ksl| by 1. + * + * This function returns the pointer to the merged block. + */ +static nghttp3_ksl_blk *ksl_merge_node(nghttp3_ksl *ksl, nghttp3_ksl_blk *blk, + size_t i) { + nghttp3_ksl_node *lnode; + nghttp3_ksl_blk *lblk, *rblk; + + assert(i + 1 < blk->n); + + lnode = nghttp3_ksl_nth_node(ksl, blk, i); + + lblk = lnode->blk; + rblk = nghttp3_ksl_nth_node(ksl, blk, i + 1)->blk; + + assert(lblk->n + rblk->n < NGHTTP3_KSL_MAX_NBLK); + + memcpy(lblk->nodes + ksl->nodelen * lblk->n, rblk->nodes, + ksl->nodelen * rblk->n); + + lblk->n += rblk->n; + lblk->next = rblk->next; + + if (lblk->next) { + lblk->next->prev = lblk; + } else if (ksl->back == rblk) { + ksl->back = lblk; + } + + ksl_blk_objalloc_del(ksl, rblk); + + if (ksl->head == blk && blk->n == 2) { + ksl_blk_objalloc_del(ksl, ksl->head); + ksl->head = lblk; + } else { + ksl_remove_node(ksl, blk, i + 1); + ksl_node_set_key(ksl, lnode, + nghttp3_ksl_nth_node(ksl, lblk, lblk->n - 1)->key); + } + + return lblk; +} + +/* + * ksl_shift_left moves the first nodes in blk->nodes[i]->blk->nodes + * to blk->nodes[i - 1]->blk->nodes in a manner that they have the + * same amount of nodes as much as possible. + */ +static void ksl_shift_left(nghttp3_ksl *ksl, nghttp3_ksl_blk *blk, size_t i) { + nghttp3_ksl_node *lnode, *rnode; + nghttp3_ksl_blk *lblk, *rblk; + size_t n; + + assert(i > 0); + + lnode = nghttp3_ksl_nth_node(ksl, blk, i - 1); + rnode = nghttp3_ksl_nth_node(ksl, blk, i); + + lblk = lnode->blk; + rblk = rnode->blk; + + assert(lblk->n < NGHTTP3_KSL_MAX_NBLK); + assert(rblk->n > NGHTTP3_KSL_MIN_NBLK); + + n = (lblk->n + rblk->n + 1) / 2 - lblk->n; + + assert(n > 0); + assert(lblk->n <= NGHTTP3_KSL_MAX_NBLK - n); + assert(rblk->n >= NGHTTP3_KSL_MIN_NBLK + n); + + memcpy(lblk->nodes + ksl->nodelen * lblk->n, rblk->nodes, ksl->nodelen * n); + + lblk->n += (uint32_t)n; + rblk->n -= (uint32_t)n; + + ksl_node_set_key(ksl, lnode, + nghttp3_ksl_nth_node(ksl, lblk, lblk->n - 1)->key); + + memmove(rblk->nodes, rblk->nodes + ksl->nodelen * n, ksl->nodelen * rblk->n); +} + +/* + * ksl_shift_right moves the last nodes in blk->nodes[i]->blk->nodes + * to blk->nodes[i + 1]->blk->nodes in a manner that they have the + * same amount of nodes as much as possible. + */ +static void ksl_shift_right(nghttp3_ksl *ksl, nghttp3_ksl_blk *blk, size_t i) { + nghttp3_ksl_node *lnode, *rnode; + nghttp3_ksl_blk *lblk, *rblk; + size_t n; + + assert(i < blk->n - 1); + + lnode = nghttp3_ksl_nth_node(ksl, blk, i); + rnode = nghttp3_ksl_nth_node(ksl, blk, i + 1); + + lblk = lnode->blk; + rblk = rnode->blk; + + assert(lblk->n > NGHTTP3_KSL_MIN_NBLK); + assert(rblk->n < NGHTTP3_KSL_MAX_NBLK); + + n = (lblk->n + rblk->n + 1) / 2 - rblk->n; + + assert(n > 0); + assert(lblk->n >= NGHTTP3_KSL_MIN_NBLK + n); + assert(rblk->n <= NGHTTP3_KSL_MAX_NBLK - n); + + memmove(rblk->nodes + ksl->nodelen * n, rblk->nodes, ksl->nodelen * rblk->n); + + rblk->n += (uint32_t)n; + lblk->n -= (uint32_t)n; + + memcpy(rblk->nodes, lblk->nodes + ksl->nodelen * lblk->n, ksl->nodelen * n); + + ksl_node_set_key(ksl, lnode, + nghttp3_ksl_nth_node(ksl, lblk, lblk->n - 1)->key); +} + +/* + * key_equal returns nonzero if |lhs| and |rhs| are equal using the + * function |compar|. + */ +static int key_equal(nghttp3_ksl_compar compar, const nghttp3_ksl_key *lhs, + const nghttp3_ksl_key *rhs) { + return !compar(lhs, rhs) && !compar(rhs, lhs); +} + +int nghttp3_ksl_remove_hint(nghttp3_ksl *ksl, nghttp3_ksl_it *it, + const nghttp3_ksl_it *hint, + const nghttp3_ksl_key *key) { + nghttp3_ksl_blk *blk = hint->blk; + + assert(ksl->head); + + if (blk->n <= NGHTTP3_KSL_MIN_NBLK) { + return nghttp3_ksl_remove(ksl, it, key); + } + + ksl_remove_node(ksl, blk, hint->i); + + --ksl->n; + + if (it) { + if (hint->i == blk->n && blk->next) { + nghttp3_ksl_it_init(it, ksl, blk->next, 0); + } else { + nghttp3_ksl_it_init(it, ksl, blk, hint->i); + } + } + + return 0; +} + +int nghttp3_ksl_remove(nghttp3_ksl *ksl, nghttp3_ksl_it *it, + const nghttp3_ksl_key *key) { + nghttp3_ksl_blk *blk = ksl->head; + nghttp3_ksl_node *node; + size_t i; + + if (!blk) { + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + if (!blk->leaf && blk->n == 2 && + nghttp3_ksl_nth_node(ksl, blk, 0)->blk->n == NGHTTP3_KSL_MIN_NBLK && + nghttp3_ksl_nth_node(ksl, blk, 1)->blk->n == NGHTTP3_KSL_MIN_NBLK) { + blk = ksl_merge_node(ksl, blk, 0); + } + + for (;;) { + i = ksl_search(ksl, blk, key, ksl->compar); + + if (i == blk->n) { + if (it) { + *it = nghttp3_ksl_end(ksl); + } + + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + if (blk->leaf) { + if (ksl->compar(key, nghttp3_ksl_nth_node(ksl, blk, i)->key)) { + if (it) { + *it = nghttp3_ksl_end(ksl); + } + + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + ksl_remove_node(ksl, blk, i); + --ksl->n; + + if (it) { + if (blk->n == i && blk->next) { + nghttp3_ksl_it_init(it, ksl, blk->next, 0); + } else { + nghttp3_ksl_it_init(it, ksl, blk, i); + } + } + + return 0; + } + + node = nghttp3_ksl_nth_node(ksl, blk, i); + + if (node->blk->n > NGHTTP3_KSL_MIN_NBLK) { + blk = node->blk; + continue; + } + + assert(node->blk->n == NGHTTP3_KSL_MIN_NBLK); + + if (i + 1 < blk->n && + nghttp3_ksl_nth_node(ksl, blk, i + 1)->blk->n > NGHTTP3_KSL_MIN_NBLK) { + ksl_shift_left(ksl, blk, i + 1); + blk = node->blk; + + continue; + } + + if (i > 0 && + nghttp3_ksl_nth_node(ksl, blk, i - 1)->blk->n > NGHTTP3_KSL_MIN_NBLK) { + ksl_shift_right(ksl, blk, i - 1); + blk = node->blk; + + continue; + } + + if (i + 1 < blk->n) { + blk = ksl_merge_node(ksl, blk, i); + continue; + } + + assert(i > 0); + + blk = ksl_merge_node(ksl, blk, i - 1); + } +} + +nghttp3_ksl_it nghttp3_ksl_lower_bound(const nghttp3_ksl *ksl, + const nghttp3_ksl_key *key) { + return nghttp3_ksl_lower_bound_compar(ksl, key, ksl->compar); +} + +nghttp3_ksl_it nghttp3_ksl_lower_bound_compar(const nghttp3_ksl *ksl, + const nghttp3_ksl_key *key, + nghttp3_ksl_compar compar) { + nghttp3_ksl_blk *blk = ksl->head; + nghttp3_ksl_it it; + size_t i; + + if (!blk) { + nghttp3_ksl_it_init(&it, ksl, &null_blk, 0); + return it; + } + + for (;;) { + i = ksl_search(ksl, blk, key, compar); + + if (blk->leaf) { + if (i == blk->n && blk->next) { + blk = blk->next; + i = 0; + } + + nghttp3_ksl_it_init(&it, ksl, blk, i); + + return it; + } + + if (i == blk->n) { + /* This happens if descendant has smaller key. Fast forward to + find last node in this subtree. */ + for (; !blk->leaf; blk = nghttp3_ksl_nth_node(ksl, blk, blk->n - 1)->blk) + ; + + if (blk->next) { + blk = blk->next; + i = 0; + } else { + i = blk->n; + } + + nghttp3_ksl_it_init(&it, ksl, blk, i); + + return it; + } + + blk = nghttp3_ksl_nth_node(ksl, blk, i)->blk; + } +} + +void nghttp3_ksl_update_key(nghttp3_ksl *ksl, const nghttp3_ksl_key *old_key, + const nghttp3_ksl_key *new_key) { + nghttp3_ksl_blk *blk = ksl->head; + nghttp3_ksl_node *node; + size_t i; + + assert(ksl->head); + + for (;;) { + i = ksl_search(ksl, blk, old_key, ksl->compar); + + assert(i < blk->n); + node = nghttp3_ksl_nth_node(ksl, blk, i); + + if (blk->leaf) { + assert(key_equal(ksl->compar, (nghttp3_ksl_key *)node->key, old_key)); + ksl_node_set_key(ksl, node, new_key); + + return; + } + + if (key_equal(ksl->compar, (nghttp3_ksl_key *)node->key, old_key) || + ksl->compar((nghttp3_ksl_key *)node->key, new_key)) { + ksl_node_set_key(ksl, node, new_key); + } + + blk = node->blk; + } +} + +size_t nghttp3_ksl_len(const nghttp3_ksl *ksl) { return ksl->n; } + +void nghttp3_ksl_clear(nghttp3_ksl *ksl) { + if (!ksl->head) { + return; + } + +#ifdef NOMEMPOOL + ksl_free_blk(ksl, ksl->head); +#endif /* defined(NOMEMPOOL) */ + + ksl->front = ksl->back = ksl->head = NULL; + ksl->n = 0; + + nghttp3_objalloc_clear(&ksl->blkalloc); +} + +#ifndef WIN32 +static void ksl_print(const nghttp3_ksl *ksl, nghttp3_ksl_blk *blk, + size_t level) { + size_t i; + nghttp3_ksl_node *node; + + fprintf(stderr, "LV=%zu n=%u\n", level, blk->n); + + if (blk->leaf) { + for (i = 0; i < blk->n; ++i) { + node = nghttp3_ksl_nth_node(ksl, blk, i); + fprintf(stderr, " %" PRId64, *(int64_t *)(void *)node->key); + } + + fprintf(stderr, "\n"); + + return; + } + + for (i = 0; i < blk->n; ++i) { + ksl_print(ksl, nghttp3_ksl_nth_node(ksl, blk, i)->blk, level + 1); + } +} + +void nghttp3_ksl_print(const nghttp3_ksl *ksl) { + if (!ksl->head) { + return; + } + + ksl_print(ksl, ksl->head, 0); +} +#endif /* !defined(WIN32) */ + +nghttp3_ksl_it nghttp3_ksl_begin(const nghttp3_ksl *ksl) { + nghttp3_ksl_it it; + + if (ksl->head) { + nghttp3_ksl_it_init(&it, ksl, ksl->front, 0); + } else { + nghttp3_ksl_it_init(&it, ksl, &null_blk, 0); + } + + return it; +} + +nghttp3_ksl_it nghttp3_ksl_end(const nghttp3_ksl *ksl) { + nghttp3_ksl_it it; + + if (ksl->head) { + nghttp3_ksl_it_init(&it, ksl, ksl->back, ksl->back->n); + } else { + nghttp3_ksl_it_init(&it, ksl, &null_blk, 0); + } + + return it; +} + +void nghttp3_ksl_it_init(nghttp3_ksl_it *it, const nghttp3_ksl *ksl, + nghttp3_ksl_blk *blk, size_t i) { + it->ksl = ksl; + it->blk = blk; + it->i = i; +} + +void nghttp3_ksl_it_prev(nghttp3_ksl_it *it) { + assert(!nghttp3_ksl_it_begin(it)); + + if (it->i == 0) { + it->blk = it->blk->prev; + it->i = it->blk->n - 1; + } else { + --it->i; + } +} + +int nghttp3_ksl_it_begin(const nghttp3_ksl_it *it) { + return it->i == 0 && it->blk->prev == NULL; +} + +int nghttp3_ksl_range_compar(const nghttp3_ksl_key *lhs, + const nghttp3_ksl_key *rhs) { + const nghttp3_range *a = lhs, *b = rhs; + return a->begin < b->begin; +} + +int nghttp3_ksl_range_exclusive_compar(const nghttp3_ksl_key *lhs, + const nghttp3_ksl_key *rhs) { + const nghttp3_range *a = lhs, *b = rhs; + return a->begin < b->begin && !(nghttp3_max_uint64(a->begin, b->begin) < + nghttp3_min_uint64(a->end, b->end)); +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_ksl.h b/contrib/libs/nghttp3/lib/nghttp3_ksl.h new file mode 100644 index 0000000000..e15e227ce5 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_ksl.h @@ -0,0 +1,351 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_KSL_H +#define NGHTTP3_KSL_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <stdlib.h> + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_objalloc.h" + +#define NGHTTP3_KSL_DEGR 16 +/* NGHTTP3_KSL_MAX_NBLK is the maximum number of nodes which a single + block can contain. */ +#define NGHTTP3_KSL_MAX_NBLK (2 * NGHTTP3_KSL_DEGR - 1) +/* NGHTTP3_KSL_MIN_NBLK is the minimum number of nodes which a single + block other than root must contain. */ +#define NGHTTP3_KSL_MIN_NBLK (NGHTTP3_KSL_DEGR - 1) + +/* + * nghttp3_ksl_key represents key in nghttp3_ksl. + */ +typedef void nghttp3_ksl_key; + +typedef struct nghttp3_ksl_node nghttp3_ksl_node; + +typedef struct nghttp3_ksl_blk nghttp3_ksl_blk; + +/* + * nghttp3_ksl_node is a node which contains either nghttp3_ksl_blk or + * opaque data. If a node is an internal node, it contains + * nghttp3_ksl_blk. Otherwise, it has data. The key is stored at the + * location starting at key. + */ +struct nghttp3_ksl_node { + union { + nghttp3_ksl_blk *blk; + void *data; + }; + union { + uint64_t align; + /* key is a buffer to include key associated to this node. + Because the length of key is unknown until nghttp3_ksl_init is + called, the actual buffer will be allocated after this + field. */ + uint8_t key[1]; + }; +}; + +/* + * nghttp3_ksl_blk contains nghttp3_ksl_node objects. + */ +struct nghttp3_ksl_blk { + union { + struct { + /* next points to the next block if leaf field is nonzero. */ + nghttp3_ksl_blk *next; + /* prev points to the previous block if leaf field is + nonzero. */ + nghttp3_ksl_blk *prev; + /* n is the number of nodes this object contains in nodes. */ + uint32_t n; + /* leaf is nonzero if this block contains leaf nodes. */ + uint32_t leaf; + union { + uint64_t align; + /* nodes is a buffer to contain NGHTTP3_KSL_MAX_NBLK + nghttp3_ksl_node objects. Because nghttp3_ksl_node object + is allocated along with the additional variable length key + storage, the size of buffer is unknown until + nghttp3_ksl_init is called. */ + uint8_t nodes[1]; + }; + }; + + nghttp3_opl_entry oplent; + }; +}; + +nghttp3_objalloc_decl(ksl_blk, nghttp3_ksl_blk, oplent); + +/* + * nghttp3_ksl_compar is a function type which returns nonzero if key + * |lhs| should be placed before |rhs|. It returns 0 otherwise. + */ +typedef int (*nghttp3_ksl_compar)(const nghttp3_ksl_key *lhs, + const nghttp3_ksl_key *rhs); + +typedef struct nghttp3_ksl nghttp3_ksl; + +typedef struct nghttp3_ksl_it nghttp3_ksl_it; + +/* + * nghttp3_ksl_it is a bidirectional iterator to iterate nodes. + */ +struct nghttp3_ksl_it { + const nghttp3_ksl *ksl; + nghttp3_ksl_blk *blk; + size_t i; +}; + +/* + * nghttp3_ksl is a deterministic paged skip list. + */ +struct nghttp3_ksl { + nghttp3_objalloc blkalloc; + /* head points to the root block. */ + nghttp3_ksl_blk *head; + /* front points to the first leaf block. */ + nghttp3_ksl_blk *front; + /* back points to the last leaf block. */ + nghttp3_ksl_blk *back; + nghttp3_ksl_compar compar; + /* n is the number of elements stored. */ + size_t n; + /* keylen is the size of key */ + size_t keylen; + /* nodelen is the actual size of nghttp3_ksl_node including key + storage. */ + size_t nodelen; +}; + +/* + * nghttp3_ksl_init initializes |ksl|. |compar| specifies compare + * function. |keylen| is the length of key and must be at least + * sizeof(uint64_t). + */ +void nghttp3_ksl_init(nghttp3_ksl *ksl, nghttp3_ksl_compar compar, + size_t keylen, const nghttp3_mem *mem); + +/* + * nghttp3_ksl_free frees resources allocated for |ksl|. If |ksl| is + * NULL, this function does nothing. It does not free the memory + * region pointed by |ksl| itself. + */ +void nghttp3_ksl_free(nghttp3_ksl *ksl); + +/* + * nghttp3_ksl_insert inserts |key| with its associated |data|. On + * successful insertion, the iterator points to the inserted node is + * stored in |*it| if |it| is not NULL. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + * NGHTTP3_ERR_INVALID_ARGUMENT + * |key| already exists. + */ +int nghttp3_ksl_insert(nghttp3_ksl *ksl, nghttp3_ksl_it *it, + const nghttp3_ksl_key *key, void *data); + +/* + * nghttp3_ksl_remove removes the |key| from |ksl|. + * + * This function assigns the iterator to |*it|, which points to the + * node which is located at the right next of the removed node if |it| + * is not NULL. If |key| is not found, no deletion takes place and + * the return value of nghttp3_ksl_end(ksl) is assigned to |*it| if + * |it| is not NULL. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_INVALID_ARGUMENT + * |key| does not exist. + */ +int nghttp3_ksl_remove(nghttp3_ksl *ksl, nghttp3_ksl_it *it, + const nghttp3_ksl_key *key); + +/* + * nghttp3_ksl_remove_hint removes the |key| from |ksl|. |hint| must + * point to the same node denoted by |key|. |hint| is used to remove + * a node efficiently in some cases. Other than that, it behaves + * exactly like nghttp3_ksl_remove. |it| and |hint| can point to the + * same object. + */ +int nghttp3_ksl_remove_hint(nghttp3_ksl *ksl, nghttp3_ksl_it *it, + const nghttp3_ksl_it *hint, + const nghttp3_ksl_key *key); + +/* + * nghttp3_ksl_lower_bound returns the iterator which points to the + * first node which has the key which is equal to |key| or the last + * node which satisfies !compar(&node->key, key). If there is no such + * node, it returns the iterator which satisfies + * nghttp3_ksl_it_end(it) != 0. + */ +nghttp3_ksl_it nghttp3_ksl_lower_bound(const nghttp3_ksl *ksl, + const nghttp3_ksl_key *key); + +/* + * nghttp3_ksl_lower_bound_compar works like nghttp3_ksl_lower_bound, + * but it takes custom function |compar| to do lower bound search. + */ +nghttp3_ksl_it nghttp3_ksl_lower_bound_compar(const nghttp3_ksl *ksl, + const nghttp3_ksl_key *key, + nghttp3_ksl_compar compar); + +/* + * nghttp3_ksl_update_key replaces the key of nodes which has + * |old_key| with |new_key|. |new_key| must be strictly greater than + * the previous node and strictly smaller than the next node. + */ +void nghttp3_ksl_update_key(nghttp3_ksl *ksl, const nghttp3_ksl_key *old_key, + const nghttp3_ksl_key *new_key); + +/* + * nghttp3_ksl_begin returns the iterator which points to the first + * node. If there is no node in |ksl|, it returns the iterator which + * satisfies both nghttp3_ksl_it_begin(it) != 0 and + * nghttp3_ksl_it_end(it) != 0. + */ +nghttp3_ksl_it nghttp3_ksl_begin(const nghttp3_ksl *ksl); + +/* + * nghttp3_ksl_end returns the iterator which points to the node + * following the last node. The returned object satisfies + * nghttp3_ksl_it_end(). If there is no node in |ksl|, it returns the + * iterator which satisfies nghttp3_ksl_it_begin(it) != 0 and + * nghttp3_ksl_it_end(it) != 0. + */ +nghttp3_ksl_it nghttp3_ksl_end(const nghttp3_ksl *ksl); + +/* + * nghttp3_ksl_len returns the number of elements stored in |ksl|. + */ +size_t nghttp3_ksl_len(const nghttp3_ksl *ksl); + +/* + * nghttp3_ksl_clear removes all elements stored in |ksl|. + */ +void nghttp3_ksl_clear(nghttp3_ksl *ksl); + +/* + * nghttp3_ksl_nth_node returns the |n|th node under |blk|. + */ +#define nghttp3_ksl_nth_node(KSL, BLK, N) \ + ((nghttp3_ksl_node *)(void *)((BLK)->nodes + (KSL)->nodelen * (N))) + +#ifndef WIN32 +/* + * nghttp3_ksl_print prints its internal state in stderr. It assumes + * that the key is of type int64_t. This function should be used for + * the debugging purpose only. + */ +void nghttp3_ksl_print(const nghttp3_ksl *ksl); +#endif /* !defined(WIN32) */ + +/* + * nghttp3_ksl_it_init initializes |it|. + */ +void nghttp3_ksl_it_init(nghttp3_ksl_it *it, const nghttp3_ksl *ksl, + nghttp3_ksl_blk *blk, size_t i); + +/* + * nghttp3_ksl_it_get returns the data associated to the node which + * |it| points to. It is undefined to call this function when + * nghttp3_ksl_it_end(it) returns nonzero. + */ +#define nghttp3_ksl_it_get(IT) \ + nghttp3_ksl_nth_node((IT)->ksl, (IT)->blk, (IT)->i)->data + +/* + * nghttp3_ksl_it_next advances the iterator by one. It is undefined + * if this function is called when nghttp3_ksl_it_end(it) returns + * nonzero. + */ +#define nghttp3_ksl_it_next(IT) \ + (++(IT)->i == (IT)->blk->n && (IT)->blk->next \ + ? ((IT)->blk = (IT)->blk->next, (IT)->i = 0) \ + : 0) + +/* + * nghttp3_ksl_it_prev moves backward the iterator by one. It is + * undefined if this function is called when nghttp3_ksl_it_begin(it) + * returns nonzero. + */ +void nghttp3_ksl_it_prev(nghttp3_ksl_it *it); + +/* + * nghttp3_ksl_it_end returns nonzero if |it| points to the one beyond + * the last node. + */ +#define nghttp3_ksl_it_end(IT) \ + ((IT)->blk->n == (IT)->i && (IT)->blk->next == NULL) + +/* + * nghttp3_ksl_it_begin returns nonzero if |it| points to the first + * node. |it| might satisfy both nghttp3_ksl_it_begin(it) != 0 and + * nghttp3_ksl_it_end(it) != 0 if the skip list has no node. + */ +int nghttp3_ksl_it_begin(const nghttp3_ksl_it *it); + +/* + * nghttp3_ksl_key returns the key of the node which |it| points to. + * It is undefined to call this function when nghttp3_ksl_it_end(it) + * returns nonzero. + */ +#define nghttp3_ksl_it_key(IT) \ + ((nghttp3_ksl_key *)nghttp3_ksl_nth_node((IT)->ksl, (IT)->blk, (IT)->i)->key) + +/* + * nghttp3_ksl_range_compar is an implementation of + * nghttp3_ksl_compar. lhs->ptr and rhs->ptr must point to + * nghttp3_range object and the function returns nonzero if (const + * nghttp3_range *)(lhs->ptr)->begin < (const nghttp3_range + * *)(rhs->ptr)->begin. + */ +int nghttp3_ksl_range_compar(const nghttp3_ksl_key *lhs, + const nghttp3_ksl_key *rhs); + +/* + * nghttp3_ksl_range_exclusive_compar is an implementation of + * nghttp3_ksl_compar. lhs->ptr and rhs->ptr must point to + * nghttp3_range object and the function returns nonzero if (const + * nghttp3_range *)(lhs->ptr)->begin < (const nghttp3_range + * *)(rhs->ptr)->begin and the 2 ranges do not intersect. + */ +int nghttp3_ksl_range_exclusive_compar(const nghttp3_ksl_key *lhs, + const nghttp3_ksl_key *rhs); + +#endif /* !defined(NGHTTP3_KSL_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_macro.h b/contrib/libs/nghttp3/lib/nghttp3_macro.h new file mode 100644 index 0000000000..a4e1dfea3c --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_macro.h @@ -0,0 +1,74 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_MACRO_H +#define NGHTTP3_MACRO_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <stddef.h> + +#include <nghttp3/nghttp3.h> + +#define nghttp3_struct_of(ptr, type, member) \ + ((type *)(void *)((char *)(ptr) - offsetof(type, member))) + +#define nghttp3_arraylen(A) (sizeof(A) / sizeof(*(A))) + +#define lstreq(A, B, N) ((sizeof((A)) - 1) == (N) && memcmp((A), (B), (N)) == 0) + +/* NGHTTP3_MAX_VARINT` is the maximum value which can be encoded in + variable-length integer encoding. */ +#define NGHTTP3_MAX_VARINT ((1ULL << 62) - 1) + +#define nghttp3_max_def(SUFFIX, T) \ + static inline T nghttp3_max_##SUFFIX(T a, T b) { return a < b ? b : a; } + +nghttp3_max_def(int8, int8_t); +nghttp3_max_def(int16, int16_t); +nghttp3_max_def(int32, int32_t); +nghttp3_max_def(int64, int64_t); +nghttp3_max_def(uint8, uint8_t); +nghttp3_max_def(uint16, uint16_t); +nghttp3_max_def(uint32, uint32_t); +nghttp3_max_def(uint64, uint64_t); +nghttp3_max_def(size, size_t); + +#define nghttp3_min_def(SUFFIX, T) \ + static inline T nghttp3_min_##SUFFIX(T a, T b) { return a < b ? a : b; } + +nghttp3_min_def(int8, int8_t); +nghttp3_min_def(int16, int16_t); +nghttp3_min_def(int32, int32_t); +nghttp3_min_def(int64, int64_t); +nghttp3_min_def(uint8, uint8_t); +nghttp3_min_def(uint16, uint16_t); +nghttp3_min_def(uint32, uint32_t); +nghttp3_min_def(uint64, uint64_t); +nghttp3_min_def(size, size_t); + +#endif /* !defined(NGHTTP3_MACRO_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_map.c b/contrib/libs/nghttp3/lib/nghttp3_map.c new file mode 100644 index 0000000000..cc5e42a2ca --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_map.c @@ -0,0 +1,303 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_map.h" + +#include <string.h> +#include <assert.h> +#include <stdio.h> + +#include "nghttp3_conv.h" + +#define NGHTTP3_INITIAL_TABLE_LENBITS 4 + +void nghttp3_map_init(nghttp3_map *map, const nghttp3_mem *mem) { + map->mem = mem; + map->hashbits = 0; + map->table = NULL; + map->size = 0; +} + +void nghttp3_map_free(nghttp3_map *map) { + if (!map) { + return; + } + + nghttp3_mem_free(map->mem, map->table); +} + +int nghttp3_map_each(const nghttp3_map *map, int (*func)(void *data, void *ptr), + void *ptr) { + int rv; + size_t i; + nghttp3_map_bucket *bkt; + size_t tablelen; + + if (map->size == 0) { + return 0; + } + + tablelen = 1u << map->hashbits; + + for (i = 0; i < tablelen; ++i) { + bkt = &map->table[i]; + + if (bkt->data == NULL) { + continue; + } + + rv = func(bkt->data, ptr); + if (rv != 0) { + return rv; + } + } + + return 0; +} + +static size_t hash(nghttp3_map_key_type key, size_t bits) { + return (size_t)((key * 11400714819323198485llu) >> (64 - bits)); +} + +static void map_bucket_swap(nghttp3_map_bucket *a, nghttp3_map_bucket *b) { + nghttp3_map_bucket c = *a; + + *a = *b; + *b = c; +} + +#ifndef WIN32 +void nghttp3_map_print_distance(const nghttp3_map *map) { + size_t i; + size_t idx; + nghttp3_map_bucket *bkt; + size_t tablelen; + + if (map->size == 0) { + return; + } + + tablelen = 1u << map->hashbits; + + for (i = 0; i < tablelen; ++i) { + bkt = &map->table[i]; + + if (bkt->data == NULL) { + fprintf(stderr, "@%zu <EMPTY>\n", i); + continue; + } + + idx = hash(bkt->key, map->hashbits); + fprintf(stderr, "@%zu hash=%zu key=%" PRIu64 " base=%zu distance=%u\n", i, + hash(bkt->key, map->hashbits), bkt->key, idx, bkt->psl); + } +} +#endif /* !defined(WIN32) */ + +static int insert(nghttp3_map_bucket *table, size_t hashbits, + nghttp3_map_key_type key, void *data) { + size_t idx = hash(key, hashbits); + nghttp3_map_bucket b = {0, key, data}, *bkt; + size_t mask = (1u << hashbits) - 1; + + for (;;) { + bkt = &table[idx]; + + if (bkt->data == NULL) { + *bkt = b; + return 0; + } + + if (b.psl > bkt->psl) { + map_bucket_swap(bkt, &b); + } else if (bkt->key == key) { + /* TODO This check is just a waste after first swap or if this + function is called from map_resize. That said, there is no + difference with or without this conditional in performance + wise. */ + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + ++b.psl; + idx = (idx + 1) & mask; + } +} + +static int map_resize(nghttp3_map *map, size_t new_hashbits) { + size_t i; + nghttp3_map_bucket *new_table; + nghttp3_map_bucket *bkt; + size_t tablelen; + int rv; + (void)rv; + + new_table = nghttp3_mem_calloc(map->mem, 1u << new_hashbits, + sizeof(nghttp3_map_bucket)); + if (new_table == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + if (map->size) { + tablelen = 1u << map->hashbits; + + for (i = 0; i < tablelen; ++i) { + bkt = &map->table[i]; + if (bkt->data == NULL) { + continue; + } + + rv = insert(new_table, new_hashbits, bkt->key, bkt->data); + + assert(0 == rv); + } + } + + nghttp3_mem_free(map->mem, map->table); + map->hashbits = new_hashbits; + map->table = new_table; + + return 0; +} + +int nghttp3_map_insert(nghttp3_map *map, nghttp3_map_key_type key, void *data) { + int rv; + + assert(data); + + /* Load factor is 0.75 */ + /* Under the very initial condition, that is map->size == 0 and + map->hashbits == 0, 4 > 3 still holds nicely. */ + if ((map->size + 1) * 4 > (1u << map->hashbits) * 3) { + if (map->hashbits) { + rv = map_resize(map, map->hashbits + 1); + if (rv != 0) { + return rv; + } + } else { + rv = map_resize(map, NGHTTP3_INITIAL_TABLE_LENBITS); + if (rv != 0) { + return rv; + } + } + } + + rv = insert(map->table, map->hashbits, key, data); + if (rv != 0) { + return rv; + } + + ++map->size; + + return 0; +} + +void *nghttp3_map_find(const nghttp3_map *map, nghttp3_map_key_type key) { + size_t idx; + nghttp3_map_bucket *bkt; + size_t psl = 0; + size_t mask; + + if (map->size == 0) { + return NULL; + } + + idx = hash(key, map->hashbits); + mask = (1u << map->hashbits) - 1; + + for (;;) { + bkt = &map->table[idx]; + + if (bkt->data == NULL || psl > bkt->psl) { + return NULL; + } + + if (bkt->key == key) { + return bkt->data; + } + + ++psl; + idx = (idx + 1) & mask; + } +} + +int nghttp3_map_remove(nghttp3_map *map, nghttp3_map_key_type key) { + size_t idx; + nghttp3_map_bucket *b, *bkt; + size_t psl = 0; + size_t mask; + + if (map->size == 0) { + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + idx = hash(key, map->hashbits); + mask = (1u << map->hashbits) - 1; + + for (;;) { + bkt = &map->table[idx]; + + if (bkt->data == NULL || psl > bkt->psl) { + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + if (bkt->key == key) { + b = bkt; + idx = (idx + 1) & mask; + + for (;;) { + bkt = &map->table[idx]; + if (bkt->data == NULL || bkt->psl == 0) { + b->data = NULL; + break; + } + + --bkt->psl; + *b = *bkt; + b = bkt; + + idx = (idx + 1) & mask; + } + + --map->size; + + return 0; + } + + ++psl; + idx = (idx + 1) & mask; + } +} + +void nghttp3_map_clear(nghttp3_map *map) { + if (map->size == 0) { + return; + } + + memset(map->table, 0, sizeof(*map->table) * (1u << map->hashbits)); + map->size = 0; +} + +size_t nghttp3_map_size(const nghttp3_map *map) { return map->size; } diff --git a/contrib/libs/nghttp3/lib/nghttp3_map.h b/contrib/libs/nghttp3/lib/nghttp3_map.h new file mode 100644 index 0000000000..2b1a6ecab5 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_map.h @@ -0,0 +1,129 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_MAP_H +#define NGHTTP3_MAP_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_mem.h" + +/* Implementation of unordered map */ + +typedef uint64_t nghttp3_map_key_type; + +typedef struct nghttp3_map_bucket { + uint32_t psl; + nghttp3_map_key_type key; + void *data; +} nghttp3_map_bucket; + +typedef struct nghttp3_map { + nghttp3_map_bucket *table; + const nghttp3_mem *mem; + size_t size; + size_t hashbits; +} nghttp3_map; + +/* + * nghttp3_map_init initializes the map |map|. + */ +void nghttp3_map_init(nghttp3_map *map, const nghttp3_mem *mem); + +/* + * nghttp3_map_free deallocates any resources allocated for |map|. + * The stored entries are not freed by this function. Use + * nghttp3_map_each() to free each entry. + */ +void nghttp3_map_free(nghttp3_map *map); + +/* + * nghttp3_map_insert inserts the new |data| with the |key| to the map + * |map|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_INVALID_ARGUMENT + * The item associated by |key| already exists. + * NGHTTP3_ERR_NOMEM + * Out of memory + */ +int nghttp3_map_insert(nghttp3_map *map, nghttp3_map_key_type key, void *data); + +/* + * nghttp3_map_find returns the entry associated by the key |key|. If + * there is no such entry, this function returns NULL. + */ +void *nghttp3_map_find(const nghttp3_map *map, nghttp3_map_key_type key); + +/* + * nghttp3_map_remove removes the entry associated by the key |key| + * from the |map|. The removed entry is not freed by this function. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_INVALID_ARGUMENT + * The entry associated by |key| does not exist. + */ +int nghttp3_map_remove(nghttp3_map *map, nghttp3_map_key_type key); + +/* + * nghttp3_map_clear removes all entries from |map|. The removed + * entry is not freed by this function. + */ +void nghttp3_map_clear(nghttp3_map *map); + +/* + * nghttp3_map_size returns the number of items stored in the map + * |map|. + */ +size_t nghttp3_map_size(const nghttp3_map *map); + +/* + * nghttp3_map_each applies the function |func| to each entry in the + * |map| with the optional user supplied pointer |ptr|. + * + * If the |func| returns 0, this function calls the |func| with the + * next entry. If the |func| returns nonzero, it will not call the + * |func| for further entries and return the return value of the + * |func| immediately. Thus, this function returns 0 if all the + * invocations of the |func| return 0, or nonzero value which the last + * invocation of |func| returns. + */ +int nghttp3_map_each(const nghttp3_map *map, int (*func)(void *data, void *ptr), + void *ptr); + +#ifndef WIN32 +void nghttp3_map_print_distance(const nghttp3_map *map); +#endif /* !defined(WIN32) */ + +#endif /* !defined(NGHTTP3_MAP_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_mem.c b/contrib/libs/nghttp3/lib/nghttp3_mem.c new file mode 100644 index 0000000000..687872f902 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_mem.c @@ -0,0 +1,124 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2014 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_mem.h" + +#include <stdio.h> + +static void *default_malloc(size_t size, void *user_data) { + (void)user_data; + + return malloc(size); +} + +static void default_free(void *ptr, void *user_data) { + (void)user_data; + + free(ptr); +} + +static void *default_calloc(size_t nmemb, size_t size, void *user_data) { + (void)user_data; + + return calloc(nmemb, size); +} + +static void *default_realloc(void *ptr, size_t size, void *user_data) { + (void)user_data; + + return realloc(ptr, size); +} + +static nghttp3_mem mem_default = {NULL, default_malloc, default_free, + default_calloc, default_realloc}; + +const nghttp3_mem *nghttp3_mem_default(void) { return &mem_default; } + +#ifndef MEMDEBUG +void *nghttp3_mem_malloc(const nghttp3_mem *mem, size_t size) { + return mem->malloc(size, mem->user_data); +} + +void nghttp3_mem_free(const nghttp3_mem *mem, void *ptr) { + mem->free(ptr, mem->user_data); +} + +void *nghttp3_mem_calloc(const nghttp3_mem *mem, size_t nmemb, size_t size) { + return mem->calloc(nmemb, size, mem->user_data); +} + +void *nghttp3_mem_realloc(const nghttp3_mem *mem, void *ptr, size_t size) { + return mem->realloc(ptr, size, mem->user_data); +} +#else /* defined(MEMDEBUG) */ +void *nghttp3_mem_malloc_debug(const nghttp3_mem *mem, size_t size, + const char *func, const char *file, + size_t line) { + void *nptr = mem->malloc(size, mem->user_data); + + fprintf(stderr, "malloc %p size=%zu in %s at %s:%zu\n", nptr, size, func, + file, line); + + return nptr; +} + +void nghttp3_mem_free_debug(const nghttp3_mem *mem, void *ptr, const char *func, + const char *file, size_t line) { + fprintf(stderr, "free ptr=%p in %s at %s:%zu\n", ptr, func, file, line); + + mem->free(ptr, mem->user_data); +} + +void nghttp3_mem_free2_debug(const nghttp3_free free_func, void *ptr, + void *user_data, const char *func, + const char *file, size_t line) { + fprintf(stderr, "free ptr=%p in %s at %s:%zu\n", ptr, func, file, line); + + free_func(ptr, user_data); +} + +void *nghttp3_mem_calloc_debug(const nghttp3_mem *mem, size_t nmemb, + size_t size, const char *func, const char *file, + size_t line) { + void *nptr = mem->calloc(nmemb, size, mem->user_data); + + fprintf(stderr, "calloc %p nmemb=%zu size=%zu in %s at %s:%zu\n", nptr, nmemb, + size, func, file, line); + + return nptr; +} + +void *nghttp3_mem_realloc_debug(const nghttp3_mem *mem, void *ptr, size_t size, + const char *func, const char *file, + size_t line) { + void *nptr = mem->realloc(ptr, size, mem->user_data); + + fprintf(stderr, "realloc %p ptr=%p size=%zu in %s at %s:%zu\n", nptr, ptr, + size, func, file, line); + + return nptr; +} +#endif /* defined(MEMDEBUG) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_mem.h b/contrib/libs/nghttp3/lib/nghttp3_mem.h new file mode 100644 index 0000000000..1ae53c9157 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_mem.h @@ -0,0 +1,80 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2014 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_MEM_H +#define NGHTTP3_MEM_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +/* Convenient wrapper functions to call allocator function in + |mem|. */ +#ifndef MEMDEBUG +void *nghttp3_mem_malloc(const nghttp3_mem *mem, size_t size); +void nghttp3_mem_free(const nghttp3_mem *mem, void *ptr); +void *nghttp3_mem_calloc(const nghttp3_mem *mem, size_t nmemb, size_t size); +void *nghttp3_mem_realloc(const nghttp3_mem *mem, void *ptr, size_t size); +#else /* defined(MEMDEBUG) */ +void *nghttp3_mem_malloc_debug(const nghttp3_mem *mem, size_t size, + const char *func, const char *file, size_t line); + +# define nghttp3_mem_malloc(MEM, SIZE) \ + nghttp3_mem_malloc_debug((MEM), (SIZE), __func__, __FILE__, __LINE__) + +void nghttp3_mem_free_debug(const nghttp3_mem *mem, void *ptr, const char *func, + const char *file, size_t line); + +# define nghttp3_mem_free(MEM, PTR) \ + nghttp3_mem_free_debug((MEM), (PTR), __func__, __FILE__, __LINE__) + +void nghttp3_mem_free2_debug(nghttp3_free free_func, void *ptr, void *user_data, + const char *func, const char *file, size_t line); + +# define nghttp3_mem_free2(FREE_FUNC, PTR, USER_DATA) \ + nghttp3_mem_free2_debug((FREE_FUNC), (PTR), (USER_DATA), __func__, \ + __FILE__, __LINE__) + +void *nghttp3_mem_calloc_debug(const nghttp3_mem *mem, size_t nmemb, + size_t size, const char *func, const char *file, + size_t line); + +# define nghttp3_mem_calloc(MEM, NMEMB, SIZE) \ + nghttp3_mem_calloc_debug((MEM), (NMEMB), (SIZE), __func__, __FILE__, \ + __LINE__) + +void *nghttp3_mem_realloc_debug(const nghttp3_mem *mem, void *ptr, size_t size, + const char *func, const char *file, + size_t line); + +# define nghttp3_mem_realloc(MEM, PTR, SIZE) \ + nghttp3_mem_realloc_debug((MEM), (PTR), (SIZE), __func__, __FILE__, \ + __LINE__) +#endif /* defined(MEMDEBUG) */ + +#endif /* !defined(NGHTTP3_MEM_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_objalloc.c b/contrib/libs/nghttp3/lib/nghttp3_objalloc.c new file mode 100644 index 0000000000..0c97860136 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_objalloc.c @@ -0,0 +1,41 @@ +/* + * nghttp3 + * + * Copyright (c) 2022 nghttp3 contributors + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_objalloc.h" + +void nghttp3_objalloc_init(nghttp3_objalloc *objalloc, size_t blklen, + const nghttp3_mem *mem) { + nghttp3_balloc_init(&objalloc->balloc, blklen, mem); + nghttp3_opl_init(&objalloc->opl); +} + +void nghttp3_objalloc_free(nghttp3_objalloc *objalloc) { + nghttp3_balloc_free(&objalloc->balloc); +} + +void nghttp3_objalloc_clear(nghttp3_objalloc *objalloc) { + nghttp3_opl_clear(&objalloc->opl); + nghttp3_balloc_clear(&objalloc->balloc); +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_objalloc.h b/contrib/libs/nghttp3/lib/nghttp3_objalloc.h new file mode 100644 index 0000000000..4f8ffa0937 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_objalloc.h @@ -0,0 +1,148 @@ +/* + * nghttp3 + * + * Copyright (c) 2022 nghttp3 contributors + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_OBJALLOC_H +#define NGHTTP3_OBJALLOC_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_balloc.h" +#include "nghttp3_opl.h" +#include "nghttp3_macro.h" +#include "nghttp3_mem.h" + +/* + * nghttp3_objalloc combines nghttp3_balloc and nghttp3_opl, and + * provides an object pool with the custom allocator to reduce the + * allocation and deallocation overheads for small objects. + */ +typedef struct nghttp3_objalloc { + nghttp3_balloc balloc; + nghttp3_opl opl; +} nghttp3_objalloc; + +/* + * nghttp3_objalloc_init initializes |objalloc|. |blklen| is directly + * passed to nghttp3_balloc_init. + */ +void nghttp3_objalloc_init(nghttp3_objalloc *objalloc, size_t blklen, + const nghttp3_mem *mem); + +/* + * nghttp3_objalloc_free releases all allocated resources. + */ +void nghttp3_objalloc_free(nghttp3_objalloc *objalloc); + +/* + * nghttp3_objalloc_clear releases all allocated resources and + * initializes its state. + */ +void nghttp3_objalloc_clear(nghttp3_objalloc *objalloc); + +#ifndef NOMEMPOOL +# define nghttp3_objalloc_decl(NAME, TYPE, OPLENTFIELD) \ + inline static void nghttp3_objalloc_##NAME##_init( \ + nghttp3_objalloc *objalloc, size_t nmemb, const nghttp3_mem *mem) { \ + nghttp3_objalloc_init( \ + objalloc, ((sizeof(TYPE) + 0xfu) & ~(uintptr_t)0xfu) * nmemb, mem); \ + } \ + \ + TYPE *nghttp3_objalloc_##NAME##_get(nghttp3_objalloc *objalloc); \ + \ + TYPE *nghttp3_objalloc_##NAME##_len_get(nghttp3_objalloc *objalloc, \ + size_t len); \ + \ + inline static void nghttp3_objalloc_##NAME##_release( \ + nghttp3_objalloc *objalloc, TYPE *obj) { \ + nghttp3_opl_push(&objalloc->opl, &obj->OPLENTFIELD); \ + } + +# define nghttp3_objalloc_def(NAME, TYPE, OPLENTFIELD) \ + TYPE *nghttp3_objalloc_##NAME##_get(nghttp3_objalloc *objalloc) { \ + nghttp3_opl_entry *oplent = nghttp3_opl_pop(&objalloc->opl); \ + TYPE *obj; \ + int rv; \ + \ + if (!oplent) { \ + rv = \ + nghttp3_balloc_get(&objalloc->balloc, (void **)&obj, sizeof(TYPE)); \ + if (rv != 0) { \ + return NULL; \ + } \ + \ + return obj; \ + } \ + \ + return nghttp3_struct_of(oplent, TYPE, OPLENTFIELD); \ + } \ + \ + TYPE *nghttp3_objalloc_##NAME##_len_get(nghttp3_objalloc *objalloc, \ + size_t len) { \ + nghttp3_opl_entry *oplent = nghttp3_opl_pop(&objalloc->opl); \ + TYPE *obj; \ + int rv; \ + \ + if (!oplent) { \ + rv = nghttp3_balloc_get(&objalloc->balloc, (void **)&obj, len); \ + if (rv != 0) { \ + return NULL; \ + } \ + \ + return obj; \ + } \ + \ + return nghttp3_struct_of(oplent, TYPE, OPLENTFIELD); \ + } +#else /* defined(NOMEMPOOL) */ +# define nghttp3_objalloc_decl(NAME, TYPE, OPLENTFIELD) \ + inline static void nghttp3_objalloc_##NAME##_init( \ + nghttp3_objalloc *objalloc, size_t nmemb, const nghttp3_mem *mem) { \ + nghttp3_objalloc_init( \ + objalloc, ((sizeof(TYPE) + 0xfu) & ~(uintptr_t)0xfu) * nmemb, mem); \ + } \ + \ + inline static TYPE *nghttp3_objalloc_##NAME##_get( \ + nghttp3_objalloc *objalloc) { \ + return nghttp3_mem_malloc(objalloc->balloc.mem, sizeof(TYPE)); \ + } \ + \ + inline static TYPE *nghttp3_objalloc_##NAME##_len_get( \ + nghttp3_objalloc *objalloc, size_t len) { \ + return nghttp3_mem_malloc(objalloc->balloc.mem, len); \ + } \ + \ + inline static void nghttp3_objalloc_##NAME##_release( \ + nghttp3_objalloc *objalloc, TYPE *obj) { \ + nghttp3_mem_free(objalloc->balloc.mem, obj); \ + } + +# define nghttp3_objalloc_def(NAME, TYPE, OPLENTFIELD) +#endif /* defined(NOMEMPOOL) */ + +#endif /* !defined(NGHTTP3_OBJALLOC_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_opl.c b/contrib/libs/nghttp3/lib/nghttp3_opl.c new file mode 100644 index 0000000000..eb8ebdd185 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_opl.c @@ -0,0 +1,47 @@ +/* + * nghttp3 + * + * Copyright (c) 2022 nghttp3 contributors + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_opl.h" + +void nghttp3_opl_init(nghttp3_opl *opl) { opl->head = NULL; } + +void nghttp3_opl_push(nghttp3_opl *opl, nghttp3_opl_entry *ent) { + ent->next = opl->head; + opl->head = ent; +} + +nghttp3_opl_entry *nghttp3_opl_pop(nghttp3_opl *opl) { + nghttp3_opl_entry *ent = opl->head; + + if (!ent) { + return NULL; + } + + opl->head = ent->next; + + return ent; +} + +void nghttp3_opl_clear(nghttp3_opl *opl) { opl->head = NULL; } diff --git a/contrib/libs/nghttp3/lib/nghttp3_opl.h b/contrib/libs/nghttp3/lib/nghttp3_opl.h new file mode 100644 index 0000000000..6609371dbf --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_opl.h @@ -0,0 +1,66 @@ +/* + * nghttp3 + * + * Copyright (c) 2022 nghttp3 contributors + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_OPL_H +#define NGHTTP3_OPL_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +typedef struct nghttp3_opl_entry nghttp3_opl_entry; + +struct nghttp3_opl_entry { + nghttp3_opl_entry *next; +}; + +/* + * nghttp3_opl is an object memory pool. + */ +typedef struct nghttp3_opl { + nghttp3_opl_entry *head; +} nghttp3_opl; + +/* + * nghttp3_opl_init initializes |opl|. + */ +void nghttp3_opl_init(nghttp3_opl *opl); + +/* + * nghttp3_opl_push inserts |ent| to |opl| head. + */ +void nghttp3_opl_push(nghttp3_opl *opl, nghttp3_opl_entry *ent); + +/* + * nghttp3_opl_pop removes the first nghttp3_opl_entry from |opl| and + * returns it. If |opl| does not have any entry, it returns NULL. + */ +nghttp3_opl_entry *nghttp3_opl_pop(nghttp3_opl *opl); + +void nghttp3_opl_clear(nghttp3_opl *opl); + +#endif /* !defined(NGHTTP3_OPL_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_pq.c b/contrib/libs/nghttp3/lib/nghttp3_pq.c new file mode 100644 index 0000000000..feefcd6fc7 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_pq.c @@ -0,0 +1,183 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_pq.h" + +#include <assert.h> + +#include "nghttp3_macro.h" + +void nghttp3_pq_init(nghttp3_pq *pq, nghttp3_pq_less less, + const nghttp3_mem *mem) { + pq->q = NULL; + pq->mem = mem; + pq->length = 0; + pq->capacity = 0; + pq->less = less; +} + +void nghttp3_pq_free(nghttp3_pq *pq) { + if (!pq) { + return; + } + + nghttp3_mem_free(pq->mem, pq->q); +} + +static void swap(nghttp3_pq *pq, size_t i, size_t j) { + nghttp3_pq_entry *a = pq->q[i]; + nghttp3_pq_entry *b = pq->q[j]; + + pq->q[i] = b; + b->index = i; + pq->q[j] = a; + a->index = j; +} + +static void bubble_up(nghttp3_pq *pq, size_t index) { + size_t parent; + + while (index) { + parent = (index - 1) / 2; + if (!pq->less(pq->q[index], pq->q[parent])) { + return; + } + + swap(pq, parent, index); + index = parent; + } +} + +int nghttp3_pq_push(nghttp3_pq *pq, nghttp3_pq_entry *item) { + if (pq->capacity <= pq->length) { + void *nq; + size_t ncapacity; + + ncapacity = nghttp3_max_size(4, pq->capacity * 2); + + nq = nghttp3_mem_realloc(pq->mem, pq->q, + ncapacity * sizeof(nghttp3_pq_entry *)); + if (nq == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + pq->capacity = ncapacity; + pq->q = nq; + } + + pq->q[pq->length] = item; + item->index = pq->length; + ++pq->length; + bubble_up(pq, item->index); + + return 0; +} + +nghttp3_pq_entry *nghttp3_pq_top(const nghttp3_pq *pq) { + assert(pq->length); + return pq->q[0]; +} + +static void bubble_down(nghttp3_pq *pq, size_t index) { + size_t i, j, minindex; + + for (;;) { + j = index * 2 + 1; + minindex = index; + + for (i = 0; i < 2; ++i, ++j) { + if (j >= pq->length) { + break; + } + + if (pq->less(pq->q[j], pq->q[minindex])) { + minindex = j; + } + } + + if (minindex == index) { + return; + } + + swap(pq, index, minindex); + index = minindex; + } +} + +void nghttp3_pq_pop(nghttp3_pq *pq) { + assert(pq->length); + + pq->q[0] = pq->q[pq->length - 1]; + pq->q[0]->index = 0; + --pq->length; + bubble_down(pq, 0); +} + +void nghttp3_pq_remove(nghttp3_pq *pq, nghttp3_pq_entry *item) { + assert(pq->q[item->index] == item); + + if (item->index == 0) { + nghttp3_pq_pop(pq); + return; + } + + if (item->index == pq->length - 1) { + --pq->length; + return; + } + + pq->q[item->index] = pq->q[pq->length - 1]; + pq->q[item->index]->index = item->index; + --pq->length; + + if (pq->less(item, pq->q[item->index])) { + bubble_down(pq, item->index); + } else { + bubble_up(pq, item->index); + } +} + +int nghttp3_pq_empty(const nghttp3_pq *pq) { return pq->length == 0; } + +size_t nghttp3_pq_size(const nghttp3_pq *pq) { return pq->length; } + +int nghttp3_pq_each(const nghttp3_pq *pq, nghttp3_pq_item_cb fun, void *arg) { + size_t i; + + if (pq->length == 0) { + return 0; + } + + for (i = 0; i < pq->length; ++i) { + if ((*fun)(pq->q[i], arg)) { + return 1; + } + } + + return 0; +} + +void nghttp3_pq_clear(nghttp3_pq *pq) { pq->length = 0; } diff --git a/contrib/libs/nghttp3/lib/nghttp3_pq.h b/contrib/libs/nghttp3/lib/nghttp3_pq.h new file mode 100644 index 0000000000..3813b52947 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_pq.h @@ -0,0 +1,137 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_PQ_H +#define NGHTTP3_PQ_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_mem.h" + +/* Implementation of priority queue */ + +/* NGHTTP3_PQ_BAD_INDEX is the priority queue index which indicates + that an entry is not queued. Assigning this value to + nghttp3_pq_entry.index can check that the entry is queued or + not. */ +#define NGHTTP3_PQ_BAD_INDEX SIZE_MAX + +typedef struct nghttp3_pq_entry { + size_t index; +} nghttp3_pq_entry; + +/* nghttp3_pq_less is a "less" function, that returns nonzero if |lhs| + is considered to be less than |rhs|. */ +typedef int (*nghttp3_pq_less)(const nghttp3_pq_entry *lhs, + const nghttp3_pq_entry *rhs); + +typedef struct nghttp3_pq { + /* q is a pointer to an array that stores the items. */ + nghttp3_pq_entry **q; + /* mem is a memory allocator. */ + const nghttp3_mem *mem; + /* length is the number of items stored. */ + size_t length; + /* capacity is the maximum number of items this queue can store. + This is automatically extended when length is reached to this + limit. */ + size_t capacity; + /* less is the less function to compare items. */ + nghttp3_pq_less less; +} nghttp3_pq; + +/* + * nghttp3_pq_init initializes |pq| with compare function |cmp|. + */ +void nghttp3_pq_init(nghttp3_pq *pq, nghttp3_pq_less less, + const nghttp3_mem *mem); + +/* + * nghttp3_pq_free deallocates any resources allocated for |pq|. The + * stored items are not freed by this function. + */ +void nghttp3_pq_free(nghttp3_pq *pq); + +/* + * nghttp3_pq_push adds |item| to |pq|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_pq_push(nghttp3_pq *pq, nghttp3_pq_entry *item); + +/* + * nghttp3_pq_top returns item at the top of |pq|. It is undefined if + * |pq| is empty. + */ +nghttp3_pq_entry *nghttp3_pq_top(const nghttp3_pq *pq); + +/* + * nghttp3_pq_pop pops item at the top of |pq|. The popped item is + * not freed by this function. It is undefined if |pq| is empty. + */ +void nghttp3_pq_pop(nghttp3_pq *pq); + +/* + * nghttp3_pq_empty returns nonzero if |pq| is empty. + */ +int nghttp3_pq_empty(const nghttp3_pq *pq); + +/* + * nghttp3_pq_size returns the number of items |pq| contains. + */ +size_t nghttp3_pq_size(const nghttp3_pq *pq); + +typedef int (*nghttp3_pq_item_cb)(nghttp3_pq_entry *item, void *arg); + +/* + * nghttp3_pq_each applies |fun| to each item in |pq|. The |arg| is + * passed as arg parameter to callback function. This function must + * not change the ordering key. If the return value from callback is + * nonzero, this function returns 1 immediately without iterating + * remaining items. Otherwise this function returns 0. + */ +int nghttp3_pq_each(const nghttp3_pq *pq, nghttp3_pq_item_cb fun, void *arg); + +/* + * nghttp3_pq_remove removes |item| from |pq|. |pq| must contain + * |item| otherwise the behavior is undefined. + */ +void nghttp3_pq_remove(nghttp3_pq *pq, nghttp3_pq_entry *item); + +/* + * nghttp3_pq_clear removes all items from |pq|. + */ +void nghttp3_pq_clear(nghttp3_pq *pq); + +#endif /* !defined(NGHTTP3_PQ_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_qpack.c b/contrib/libs/nghttp3/lib/nghttp3_qpack.c new file mode 100644 index 0000000000..a1c7e7487c --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_qpack.c @@ -0,0 +1,4164 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2013 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_qpack.h" + +#include <string.h> +#include <assert.h> +#include <stdio.h> + +#include "nghttp3_str.h" +#include "nghttp3_macro.h" +#include "nghttp3_debug.h" +#include "nghttp3_unreachable.h" + +/* NGHTTP3_QPACK_MAX_QPACK_STREAMS is the maximum number of concurrent + nghttp3_qpack_stream object to handle a client which never cancel + or acknowledge header block. After this limit, encoder stops using + dynamic table. */ +#define NGHTTP3_QPACK_MAX_QPACK_STREAMS 2000 + +/* Make scalar initialization form of nghttp3_qpack_static_entry */ +#define MAKE_STATIC_ENT(I, T, H) {I, T, H} + +/* Generated by mkstatichdtbl.py */ +static nghttp3_qpack_static_entry token_stable[] = { + MAKE_STATIC_ENT(0, NGHTTP3_QPACK_TOKEN__AUTHORITY, 3153725150u), + MAKE_STATIC_ENT(15, NGHTTP3_QPACK_TOKEN__METHOD, 695666056u), + MAKE_STATIC_ENT(16, NGHTTP3_QPACK_TOKEN__METHOD, 695666056u), + MAKE_STATIC_ENT(17, NGHTTP3_QPACK_TOKEN__METHOD, 695666056u), + MAKE_STATIC_ENT(18, NGHTTP3_QPACK_TOKEN__METHOD, 695666056u), + MAKE_STATIC_ENT(19, NGHTTP3_QPACK_TOKEN__METHOD, 695666056u), + MAKE_STATIC_ENT(20, NGHTTP3_QPACK_TOKEN__METHOD, 695666056u), + MAKE_STATIC_ENT(21, NGHTTP3_QPACK_TOKEN__METHOD, 695666056u), + MAKE_STATIC_ENT(1, NGHTTP3_QPACK_TOKEN__PATH, 3292848686u), + MAKE_STATIC_ENT(22, NGHTTP3_QPACK_TOKEN__SCHEME, 2510477674u), + MAKE_STATIC_ENT(23, NGHTTP3_QPACK_TOKEN__SCHEME, 2510477674u), + MAKE_STATIC_ENT(24, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(25, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(26, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(27, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(28, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(63, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(64, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(65, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(66, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(67, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(68, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(69, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(70, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(71, NGHTTP3_QPACK_TOKEN__STATUS, 4000288983u), + MAKE_STATIC_ENT(29, NGHTTP3_QPACK_TOKEN_ACCEPT, 136609321u), + MAKE_STATIC_ENT(30, NGHTTP3_QPACK_TOKEN_ACCEPT, 136609321u), + MAKE_STATIC_ENT(31, NGHTTP3_QPACK_TOKEN_ACCEPT_ENCODING, 3379649177u), + MAKE_STATIC_ENT(72, NGHTTP3_QPACK_TOKEN_ACCEPT_LANGUAGE, 1979086614u), + MAKE_STATIC_ENT(32, NGHTTP3_QPACK_TOKEN_ACCEPT_RANGES, 1713753958u), + MAKE_STATIC_ENT(73, NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_CREDENTIALS, + 901040780u), + MAKE_STATIC_ENT(74, NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_CREDENTIALS, + 901040780u), + MAKE_STATIC_ENT(33, NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_HEADERS, + 1524311232u), + MAKE_STATIC_ENT(34, NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_HEADERS, + 1524311232u), + MAKE_STATIC_ENT(75, NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_HEADERS, + 1524311232u), + MAKE_STATIC_ENT(76, NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_METHODS, + 2175229868u), + MAKE_STATIC_ENT(77, NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_METHODS, + 2175229868u), + MAKE_STATIC_ENT(78, NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_METHODS, + 2175229868u), + MAKE_STATIC_ENT(35, NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_ORIGIN, + 2710797292u), + MAKE_STATIC_ENT(79, NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_EXPOSE_HEADERS, + 2449824425u), + MAKE_STATIC_ENT(80, NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_REQUEST_HEADERS, + 3599549072u), + MAKE_STATIC_ENT(81, NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_REQUEST_METHOD, + 2417078055u), + MAKE_STATIC_ENT(82, NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_REQUEST_METHOD, + 2417078055u), + MAKE_STATIC_ENT(2, NGHTTP3_QPACK_TOKEN_AGE, 742476188u), + MAKE_STATIC_ENT(83, NGHTTP3_QPACK_TOKEN_ALT_SVC, 2148877059u), + MAKE_STATIC_ENT(84, NGHTTP3_QPACK_TOKEN_AUTHORIZATION, 2436257726u), + MAKE_STATIC_ENT(36, NGHTTP3_QPACK_TOKEN_CACHE_CONTROL, 1355326669u), + MAKE_STATIC_ENT(37, NGHTTP3_QPACK_TOKEN_CACHE_CONTROL, 1355326669u), + MAKE_STATIC_ENT(38, NGHTTP3_QPACK_TOKEN_CACHE_CONTROL, 1355326669u), + MAKE_STATIC_ENT(39, NGHTTP3_QPACK_TOKEN_CACHE_CONTROL, 1355326669u), + MAKE_STATIC_ENT(40, NGHTTP3_QPACK_TOKEN_CACHE_CONTROL, 1355326669u), + MAKE_STATIC_ENT(41, NGHTTP3_QPACK_TOKEN_CACHE_CONTROL, 1355326669u), + MAKE_STATIC_ENT(3, NGHTTP3_QPACK_TOKEN_CONTENT_DISPOSITION, 3889184348u), + MAKE_STATIC_ENT(42, NGHTTP3_QPACK_TOKEN_CONTENT_ENCODING, 65203592u), + MAKE_STATIC_ENT(43, NGHTTP3_QPACK_TOKEN_CONTENT_ENCODING, 65203592u), + MAKE_STATIC_ENT(4, NGHTTP3_QPACK_TOKEN_CONTENT_LENGTH, 1308181789u), + MAKE_STATIC_ENT(85, NGHTTP3_QPACK_TOKEN_CONTENT_SECURITY_POLICY, 1569039836u), + MAKE_STATIC_ENT(44, NGHTTP3_QPACK_TOKEN_CONTENT_TYPE, 4244048277u), + MAKE_STATIC_ENT(45, NGHTTP3_QPACK_TOKEN_CONTENT_TYPE, 4244048277u), + MAKE_STATIC_ENT(46, NGHTTP3_QPACK_TOKEN_CONTENT_TYPE, 4244048277u), + MAKE_STATIC_ENT(47, NGHTTP3_QPACK_TOKEN_CONTENT_TYPE, 4244048277u), + MAKE_STATIC_ENT(48, NGHTTP3_QPACK_TOKEN_CONTENT_TYPE, 4244048277u), + MAKE_STATIC_ENT(49, NGHTTP3_QPACK_TOKEN_CONTENT_TYPE, 4244048277u), + MAKE_STATIC_ENT(50, NGHTTP3_QPACK_TOKEN_CONTENT_TYPE, 4244048277u), + MAKE_STATIC_ENT(51, NGHTTP3_QPACK_TOKEN_CONTENT_TYPE, 4244048277u), + MAKE_STATIC_ENT(52, NGHTTP3_QPACK_TOKEN_CONTENT_TYPE, 4244048277u), + MAKE_STATIC_ENT(53, NGHTTP3_QPACK_TOKEN_CONTENT_TYPE, 4244048277u), + MAKE_STATIC_ENT(54, NGHTTP3_QPACK_TOKEN_CONTENT_TYPE, 4244048277u), + MAKE_STATIC_ENT(5, NGHTTP3_QPACK_TOKEN_COOKIE, 2007449791u), + MAKE_STATIC_ENT(6, NGHTTP3_QPACK_TOKEN_DATE, 3564297305u), + MAKE_STATIC_ENT(86, NGHTTP3_QPACK_TOKEN_EARLY_DATA, 4080895051u), + MAKE_STATIC_ENT(7, NGHTTP3_QPACK_TOKEN_ETAG, 113792960u), + MAKE_STATIC_ENT(87, NGHTTP3_QPACK_TOKEN_EXPECT_CT, 1183214960u), + MAKE_STATIC_ENT(88, NGHTTP3_QPACK_TOKEN_FORWARDED, 1485178027u), + MAKE_STATIC_ENT(8, NGHTTP3_QPACK_TOKEN_IF_MODIFIED_SINCE, 2213050793u), + MAKE_STATIC_ENT(9, NGHTTP3_QPACK_TOKEN_IF_NONE_MATCH, 2536202615u), + MAKE_STATIC_ENT(89, NGHTTP3_QPACK_TOKEN_IF_RANGE, 2340978238u), + MAKE_STATIC_ENT(10, NGHTTP3_QPACK_TOKEN_LAST_MODIFIED, 3226950251u), + MAKE_STATIC_ENT(11, NGHTTP3_QPACK_TOKEN_LINK, 232457833u), + MAKE_STATIC_ENT(12, NGHTTP3_QPACK_TOKEN_LOCATION, 200649126u), + MAKE_STATIC_ENT(90, NGHTTP3_QPACK_TOKEN_ORIGIN, 3649018447u), + MAKE_STATIC_ENT(91, NGHTTP3_QPACK_TOKEN_PURPOSE, 4212263681u), + MAKE_STATIC_ENT(55, NGHTTP3_QPACK_TOKEN_RANGE, 4208725202u), + MAKE_STATIC_ENT(13, NGHTTP3_QPACK_TOKEN_REFERER, 3969579366u), + MAKE_STATIC_ENT(92, NGHTTP3_QPACK_TOKEN_SERVER, 1085029842u), + MAKE_STATIC_ENT(14, NGHTTP3_QPACK_TOKEN_SET_COOKIE, 1848371000u), + MAKE_STATIC_ENT(56, NGHTTP3_QPACK_TOKEN_STRICT_TRANSPORT_SECURITY, + 4138147361u), + MAKE_STATIC_ENT(57, NGHTTP3_QPACK_TOKEN_STRICT_TRANSPORT_SECURITY, + 4138147361u), + MAKE_STATIC_ENT(58, NGHTTP3_QPACK_TOKEN_STRICT_TRANSPORT_SECURITY, + 4138147361u), + MAKE_STATIC_ENT(93, NGHTTP3_QPACK_TOKEN_TIMING_ALLOW_ORIGIN, 2432297564u), + MAKE_STATIC_ENT(94, NGHTTP3_QPACK_TOKEN_UPGRADE_INSECURE_REQUESTS, + 2479169413u), + MAKE_STATIC_ENT(95, NGHTTP3_QPACK_TOKEN_USER_AGENT, 606444526u), + MAKE_STATIC_ENT(59, NGHTTP3_QPACK_TOKEN_VARY, 1085005381u), + MAKE_STATIC_ENT(60, NGHTTP3_QPACK_TOKEN_VARY, 1085005381u), + MAKE_STATIC_ENT(61, NGHTTP3_QPACK_TOKEN_X_CONTENT_TYPE_OPTIONS, 3644557769u), + MAKE_STATIC_ENT(96, NGHTTP3_QPACK_TOKEN_X_FORWARDED_FOR, 2914187656u), + MAKE_STATIC_ENT(97, NGHTTP3_QPACK_TOKEN_X_FRAME_OPTIONS, 3993834824u), + MAKE_STATIC_ENT(98, NGHTTP3_QPACK_TOKEN_X_FRAME_OPTIONS, 3993834824u), + MAKE_STATIC_ENT(62, NGHTTP3_QPACK_TOKEN_X_XSS_PROTECTION, 2501058888u), +}; + +/* Make scalar initialization form of nghttp3_qpack_static_entry */ +#define MAKE_STATIC_HD(N, V, T) \ + { \ + {NULL, (uint8_t *)(N), sizeof((N)) - 1, -1}, \ + {NULL, (uint8_t *)(V), sizeof((V)) - 1, -1}, \ + T, \ + } + +static nghttp3_qpack_static_header stable[] = { + MAKE_STATIC_HD(":authority", "", NGHTTP3_QPACK_TOKEN__AUTHORITY), + MAKE_STATIC_HD(":path", "/", NGHTTP3_QPACK_TOKEN__PATH), + MAKE_STATIC_HD("age", "0", NGHTTP3_QPACK_TOKEN_AGE), + MAKE_STATIC_HD("content-disposition", "", + NGHTTP3_QPACK_TOKEN_CONTENT_DISPOSITION), + MAKE_STATIC_HD("content-length", "0", NGHTTP3_QPACK_TOKEN_CONTENT_LENGTH), + MAKE_STATIC_HD("cookie", "", NGHTTP3_QPACK_TOKEN_COOKIE), + MAKE_STATIC_HD("date", "", NGHTTP3_QPACK_TOKEN_DATE), + MAKE_STATIC_HD("etag", "", NGHTTP3_QPACK_TOKEN_ETAG), + MAKE_STATIC_HD("if-modified-since", "", + NGHTTP3_QPACK_TOKEN_IF_MODIFIED_SINCE), + MAKE_STATIC_HD("if-none-match", "", NGHTTP3_QPACK_TOKEN_IF_NONE_MATCH), + MAKE_STATIC_HD("last-modified", "", NGHTTP3_QPACK_TOKEN_LAST_MODIFIED), + MAKE_STATIC_HD("link", "", NGHTTP3_QPACK_TOKEN_LINK), + MAKE_STATIC_HD("location", "", NGHTTP3_QPACK_TOKEN_LOCATION), + MAKE_STATIC_HD("referer", "", NGHTTP3_QPACK_TOKEN_REFERER), + MAKE_STATIC_HD("set-cookie", "", NGHTTP3_QPACK_TOKEN_SET_COOKIE), + MAKE_STATIC_HD(":method", "CONNECT", NGHTTP3_QPACK_TOKEN__METHOD), + MAKE_STATIC_HD(":method", "DELETE", NGHTTP3_QPACK_TOKEN__METHOD), + MAKE_STATIC_HD(":method", "GET", NGHTTP3_QPACK_TOKEN__METHOD), + MAKE_STATIC_HD(":method", "HEAD", NGHTTP3_QPACK_TOKEN__METHOD), + MAKE_STATIC_HD(":method", "OPTIONS", NGHTTP3_QPACK_TOKEN__METHOD), + MAKE_STATIC_HD(":method", "POST", NGHTTP3_QPACK_TOKEN__METHOD), + MAKE_STATIC_HD(":method", "PUT", NGHTTP3_QPACK_TOKEN__METHOD), + MAKE_STATIC_HD(":scheme", "http", NGHTTP3_QPACK_TOKEN__SCHEME), + MAKE_STATIC_HD(":scheme", "https", NGHTTP3_QPACK_TOKEN__SCHEME), + MAKE_STATIC_HD(":status", "103", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD(":status", "200", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD(":status", "304", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD(":status", "404", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD(":status", "503", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD("accept", "*/*", NGHTTP3_QPACK_TOKEN_ACCEPT), + MAKE_STATIC_HD("accept", "application/dns-message", + NGHTTP3_QPACK_TOKEN_ACCEPT), + MAKE_STATIC_HD("accept-encoding", "gzip, deflate, br", + NGHTTP3_QPACK_TOKEN_ACCEPT_ENCODING), + MAKE_STATIC_HD("accept-ranges", "bytes", NGHTTP3_QPACK_TOKEN_ACCEPT_RANGES), + MAKE_STATIC_HD("access-control-allow-headers", "cache-control", + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_HEADERS), + MAKE_STATIC_HD("access-control-allow-headers", "content-type", + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_HEADERS), + MAKE_STATIC_HD("access-control-allow-origin", "*", + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_ORIGIN), + MAKE_STATIC_HD("cache-control", "max-age=0", + NGHTTP3_QPACK_TOKEN_CACHE_CONTROL), + MAKE_STATIC_HD("cache-control", "max-age=2592000", + NGHTTP3_QPACK_TOKEN_CACHE_CONTROL), + MAKE_STATIC_HD("cache-control", "max-age=604800", + NGHTTP3_QPACK_TOKEN_CACHE_CONTROL), + MAKE_STATIC_HD("cache-control", "no-cache", + NGHTTP3_QPACK_TOKEN_CACHE_CONTROL), + MAKE_STATIC_HD("cache-control", "no-store", + NGHTTP3_QPACK_TOKEN_CACHE_CONTROL), + MAKE_STATIC_HD("cache-control", "public, max-age=31536000", + NGHTTP3_QPACK_TOKEN_CACHE_CONTROL), + MAKE_STATIC_HD("content-encoding", "br", + NGHTTP3_QPACK_TOKEN_CONTENT_ENCODING), + MAKE_STATIC_HD("content-encoding", "gzip", + NGHTTP3_QPACK_TOKEN_CONTENT_ENCODING), + MAKE_STATIC_HD("content-type", "application/dns-message", + NGHTTP3_QPACK_TOKEN_CONTENT_TYPE), + MAKE_STATIC_HD("content-type", "application/javascript", + NGHTTP3_QPACK_TOKEN_CONTENT_TYPE), + MAKE_STATIC_HD("content-type", "application/json", + NGHTTP3_QPACK_TOKEN_CONTENT_TYPE), + MAKE_STATIC_HD("content-type", "application/x-www-form-urlencoded", + NGHTTP3_QPACK_TOKEN_CONTENT_TYPE), + MAKE_STATIC_HD("content-type", "image/gif", NGHTTP3_QPACK_TOKEN_CONTENT_TYPE), + MAKE_STATIC_HD("content-type", "image/jpeg", + NGHTTP3_QPACK_TOKEN_CONTENT_TYPE), + MAKE_STATIC_HD("content-type", "image/png", NGHTTP3_QPACK_TOKEN_CONTENT_TYPE), + MAKE_STATIC_HD("content-type", "text/css", NGHTTP3_QPACK_TOKEN_CONTENT_TYPE), + MAKE_STATIC_HD("content-type", "text/html; charset=utf-8", + NGHTTP3_QPACK_TOKEN_CONTENT_TYPE), + MAKE_STATIC_HD("content-type", "text/plain", + NGHTTP3_QPACK_TOKEN_CONTENT_TYPE), + MAKE_STATIC_HD("content-type", "text/plain;charset=utf-8", + NGHTTP3_QPACK_TOKEN_CONTENT_TYPE), + MAKE_STATIC_HD("range", "bytes=0-", NGHTTP3_QPACK_TOKEN_RANGE), + MAKE_STATIC_HD("strict-transport-security", "max-age=31536000", + NGHTTP3_QPACK_TOKEN_STRICT_TRANSPORT_SECURITY), + MAKE_STATIC_HD("strict-transport-security", + "max-age=31536000; includesubdomains", + NGHTTP3_QPACK_TOKEN_STRICT_TRANSPORT_SECURITY), + MAKE_STATIC_HD("strict-transport-security", + "max-age=31536000; includesubdomains; preload", + NGHTTP3_QPACK_TOKEN_STRICT_TRANSPORT_SECURITY), + MAKE_STATIC_HD("vary", "accept-encoding", NGHTTP3_QPACK_TOKEN_VARY), + MAKE_STATIC_HD("vary", "origin", NGHTTP3_QPACK_TOKEN_VARY), + MAKE_STATIC_HD("x-content-type-options", "nosniff", + NGHTTP3_QPACK_TOKEN_X_CONTENT_TYPE_OPTIONS), + MAKE_STATIC_HD("x-xss-protection", "1; mode=block", + NGHTTP3_QPACK_TOKEN_X_XSS_PROTECTION), + MAKE_STATIC_HD(":status", "100", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD(":status", "204", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD(":status", "206", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD(":status", "302", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD(":status", "400", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD(":status", "403", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD(":status", "421", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD(":status", "425", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD(":status", "500", NGHTTP3_QPACK_TOKEN__STATUS), + MAKE_STATIC_HD("accept-language", "", NGHTTP3_QPACK_TOKEN_ACCEPT_LANGUAGE), + MAKE_STATIC_HD("access-control-allow-credentials", "FALSE", + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_CREDENTIALS), + MAKE_STATIC_HD("access-control-allow-credentials", "TRUE", + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_CREDENTIALS), + MAKE_STATIC_HD("access-control-allow-headers", "*", + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_HEADERS), + MAKE_STATIC_HD("access-control-allow-methods", "get", + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_METHODS), + MAKE_STATIC_HD("access-control-allow-methods", "get, post, options", + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_METHODS), + MAKE_STATIC_HD("access-control-allow-methods", "options", + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_METHODS), + MAKE_STATIC_HD("access-control-expose-headers", "content-length", + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_EXPOSE_HEADERS), + MAKE_STATIC_HD("access-control-request-headers", "content-type", + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_REQUEST_HEADERS), + MAKE_STATIC_HD("access-control-request-method", "get", + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_REQUEST_METHOD), + MAKE_STATIC_HD("access-control-request-method", "post", + NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_REQUEST_METHOD), + MAKE_STATIC_HD("alt-svc", "clear", NGHTTP3_QPACK_TOKEN_ALT_SVC), + MAKE_STATIC_HD("authorization", "", NGHTTP3_QPACK_TOKEN_AUTHORIZATION), + MAKE_STATIC_HD("content-security-policy", + "script-src 'none'; object-src 'none'; base-uri 'none'", + NGHTTP3_QPACK_TOKEN_CONTENT_SECURITY_POLICY), + MAKE_STATIC_HD("early-data", "1", NGHTTP3_QPACK_TOKEN_EARLY_DATA), + MAKE_STATIC_HD("expect-ct", "", NGHTTP3_QPACK_TOKEN_EXPECT_CT), + MAKE_STATIC_HD("forwarded", "", NGHTTP3_QPACK_TOKEN_FORWARDED), + MAKE_STATIC_HD("if-range", "", NGHTTP3_QPACK_TOKEN_IF_RANGE), + MAKE_STATIC_HD("origin", "", NGHTTP3_QPACK_TOKEN_ORIGIN), + MAKE_STATIC_HD("purpose", "prefetch", NGHTTP3_QPACK_TOKEN_PURPOSE), + MAKE_STATIC_HD("server", "", NGHTTP3_QPACK_TOKEN_SERVER), + MAKE_STATIC_HD("timing-allow-origin", "*", + NGHTTP3_QPACK_TOKEN_TIMING_ALLOW_ORIGIN), + MAKE_STATIC_HD("upgrade-insecure-requests", "1", + NGHTTP3_QPACK_TOKEN_UPGRADE_INSECURE_REQUESTS), + MAKE_STATIC_HD("user-agent", "", NGHTTP3_QPACK_TOKEN_USER_AGENT), + MAKE_STATIC_HD("x-forwarded-for", "", NGHTTP3_QPACK_TOKEN_X_FORWARDED_FOR), + MAKE_STATIC_HD("x-frame-options", "deny", + NGHTTP3_QPACK_TOKEN_X_FRAME_OPTIONS), + MAKE_STATIC_HD("x-frame-options", "sameorigin", + NGHTTP3_QPACK_TOKEN_X_FRAME_OPTIONS), +}; + +static int memeq(const void *s1, const void *s2, size_t n) { + return n == 0 || memcmp(s1, s2, n) == 0; +} + +/* Generated by genlibtokenlookup.py */ +static int32_t qpack_lookup_token(const uint8_t *name, size_t namelen) { + switch (namelen) { + case 2: + switch (name[1]) { + case 'e': + if (memeq("t", name, 1)) { + return NGHTTP3_QPACK_TOKEN_TE; + } + break; + } + break; + case 3: + switch (name[2]) { + case 'e': + if (memeq("ag", name, 2)) { + return NGHTTP3_QPACK_TOKEN_AGE; + } + break; + } + break; + case 4: + switch (name[3]) { + case 'e': + if (memeq("dat", name, 3)) { + return NGHTTP3_QPACK_TOKEN_DATE; + } + break; + case 'g': + if (memeq("eta", name, 3)) { + return NGHTTP3_QPACK_TOKEN_ETAG; + } + break; + case 'k': + if (memeq("lin", name, 3)) { + return NGHTTP3_QPACK_TOKEN_LINK; + } + break; + case 't': + if (memeq("hos", name, 3)) { + return NGHTTP3_QPACK_TOKEN_HOST; + } + break; + case 'y': + if (memeq("var", name, 3)) { + return NGHTTP3_QPACK_TOKEN_VARY; + } + break; + } + break; + case 5: + switch (name[4]) { + case 'e': + if (memeq("rang", name, 4)) { + return NGHTTP3_QPACK_TOKEN_RANGE; + } + break; + case 'h': + if (memeq(":pat", name, 4)) { + return NGHTTP3_QPACK_TOKEN__PATH; + } + break; + } + break; + case 6: + switch (name[5]) { + case 'e': + if (memeq("cooki", name, 5)) { + return NGHTTP3_QPACK_TOKEN_COOKIE; + } + break; + case 'n': + if (memeq("origi", name, 5)) { + return NGHTTP3_QPACK_TOKEN_ORIGIN; + } + break; + case 'r': + if (memeq("serve", name, 5)) { + return NGHTTP3_QPACK_TOKEN_SERVER; + } + break; + case 't': + if (memeq("accep", name, 5)) { + return NGHTTP3_QPACK_TOKEN_ACCEPT; + } + break; + } + break; + case 7: + switch (name[6]) { + case 'c': + if (memeq("alt-sv", name, 6)) { + return NGHTTP3_QPACK_TOKEN_ALT_SVC; + } + break; + case 'd': + if (memeq(":metho", name, 6)) { + return NGHTTP3_QPACK_TOKEN__METHOD; + } + break; + case 'e': + if (memeq(":schem", name, 6)) { + return NGHTTP3_QPACK_TOKEN__SCHEME; + } + if (memeq("purpos", name, 6)) { + return NGHTTP3_QPACK_TOKEN_PURPOSE; + } + if (memeq("upgrad", name, 6)) { + return NGHTTP3_QPACK_TOKEN_UPGRADE; + } + break; + case 'r': + if (memeq("refere", name, 6)) { + return NGHTTP3_QPACK_TOKEN_REFERER; + } + break; + case 's': + if (memeq(":statu", name, 6)) { + return NGHTTP3_QPACK_TOKEN__STATUS; + } + break; + } + break; + case 8: + switch (name[7]) { + case 'e': + if (memeq("if-rang", name, 7)) { + return NGHTTP3_QPACK_TOKEN_IF_RANGE; + } + break; + case 'n': + if (memeq("locatio", name, 7)) { + return NGHTTP3_QPACK_TOKEN_LOCATION; + } + break; + case 'y': + if (memeq("priorit", name, 7)) { + return NGHTTP3_QPACK_TOKEN_PRIORITY; + } + break; + } + break; + case 9: + switch (name[8]) { + case 'd': + if (memeq("forwarde", name, 8)) { + return NGHTTP3_QPACK_TOKEN_FORWARDED; + } + break; + case 'l': + if (memeq(":protoco", name, 8)) { + return NGHTTP3_QPACK_TOKEN__PROTOCOL; + } + break; + case 't': + if (memeq("expect-c", name, 8)) { + return NGHTTP3_QPACK_TOKEN_EXPECT_CT; + } + break; + } + break; + case 10: + switch (name[9]) { + case 'a': + if (memeq("early-dat", name, 9)) { + return NGHTTP3_QPACK_TOKEN_EARLY_DATA; + } + break; + case 'e': + if (memeq("keep-aliv", name, 9)) { + return NGHTTP3_QPACK_TOKEN_KEEP_ALIVE; + } + if (memeq("set-cooki", name, 9)) { + return NGHTTP3_QPACK_TOKEN_SET_COOKIE; + } + break; + case 'n': + if (memeq("connectio", name, 9)) { + return NGHTTP3_QPACK_TOKEN_CONNECTION; + } + break; + case 't': + if (memeq("user-agen", name, 9)) { + return NGHTTP3_QPACK_TOKEN_USER_AGENT; + } + break; + case 'y': + if (memeq(":authorit", name, 9)) { + return NGHTTP3_QPACK_TOKEN__AUTHORITY; + } + break; + } + break; + case 12: + switch (name[11]) { + case 'e': + if (memeq("content-typ", name, 11)) { + return NGHTTP3_QPACK_TOKEN_CONTENT_TYPE; + } + break; + } + break; + case 13: + switch (name[12]) { + case 'd': + if (memeq("last-modifie", name, 12)) { + return NGHTTP3_QPACK_TOKEN_LAST_MODIFIED; + } + break; + case 'h': + if (memeq("if-none-matc", name, 12)) { + return NGHTTP3_QPACK_TOKEN_IF_NONE_MATCH; + } + break; + case 'l': + if (memeq("cache-contro", name, 12)) { + return NGHTTP3_QPACK_TOKEN_CACHE_CONTROL; + } + break; + case 'n': + if (memeq("authorizatio", name, 12)) { + return NGHTTP3_QPACK_TOKEN_AUTHORIZATION; + } + break; + case 's': + if (memeq("accept-range", name, 12)) { + return NGHTTP3_QPACK_TOKEN_ACCEPT_RANGES; + } + break; + } + break; + case 14: + switch (name[13]) { + case 'h': + if (memeq("content-lengt", name, 13)) { + return NGHTTP3_QPACK_TOKEN_CONTENT_LENGTH; + } + break; + } + break; + case 15: + switch (name[14]) { + case 'e': + if (memeq("accept-languag", name, 14)) { + return NGHTTP3_QPACK_TOKEN_ACCEPT_LANGUAGE; + } + break; + case 'g': + if (memeq("accept-encodin", name, 14)) { + return NGHTTP3_QPACK_TOKEN_ACCEPT_ENCODING; + } + break; + case 'r': + if (memeq("x-forwarded-fo", name, 14)) { + return NGHTTP3_QPACK_TOKEN_X_FORWARDED_FOR; + } + break; + case 's': + if (memeq("x-frame-option", name, 14)) { + return NGHTTP3_QPACK_TOKEN_X_FRAME_OPTIONS; + } + break; + } + break; + case 16: + switch (name[15]) { + case 'g': + if (memeq("content-encodin", name, 15)) { + return NGHTTP3_QPACK_TOKEN_CONTENT_ENCODING; + } + break; + case 'n': + if (memeq("proxy-connectio", name, 15)) { + return NGHTTP3_QPACK_TOKEN_PROXY_CONNECTION; + } + if (memeq("x-xss-protectio", name, 15)) { + return NGHTTP3_QPACK_TOKEN_X_XSS_PROTECTION; + } + break; + } + break; + case 17: + switch (name[16]) { + case 'e': + if (memeq("if-modified-sinc", name, 16)) { + return NGHTTP3_QPACK_TOKEN_IF_MODIFIED_SINCE; + } + break; + case 'g': + if (memeq("transfer-encodin", name, 16)) { + return NGHTTP3_QPACK_TOKEN_TRANSFER_ENCODING; + } + break; + } + break; + case 19: + switch (name[18]) { + case 'n': + if (memeq("content-dispositio", name, 18)) { + return NGHTTP3_QPACK_TOKEN_CONTENT_DISPOSITION; + } + if (memeq("timing-allow-origi", name, 18)) { + return NGHTTP3_QPACK_TOKEN_TIMING_ALLOW_ORIGIN; + } + break; + } + break; + case 22: + switch (name[21]) { + case 's': + if (memeq("x-content-type-option", name, 21)) { + return NGHTTP3_QPACK_TOKEN_X_CONTENT_TYPE_OPTIONS; + } + break; + } + break; + case 23: + switch (name[22]) { + case 'y': + if (memeq("content-security-polic", name, 22)) { + return NGHTTP3_QPACK_TOKEN_CONTENT_SECURITY_POLICY; + } + break; + } + break; + case 25: + switch (name[24]) { + case 's': + if (memeq("upgrade-insecure-request", name, 24)) { + return NGHTTP3_QPACK_TOKEN_UPGRADE_INSECURE_REQUESTS; + } + break; + case 'y': + if (memeq("strict-transport-securit", name, 24)) { + return NGHTTP3_QPACK_TOKEN_STRICT_TRANSPORT_SECURITY; + } + break; + } + break; + case 27: + switch (name[26]) { + case 'n': + if (memeq("access-control-allow-origi", name, 26)) { + return NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_ORIGIN; + } + break; + } + break; + case 28: + switch (name[27]) { + case 's': + if (memeq("access-control-allow-header", name, 27)) { + return NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_HEADERS; + } + if (memeq("access-control-allow-method", name, 27)) { + return NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_METHODS; + } + break; + } + break; + case 29: + switch (name[28]) { + case 'd': + if (memeq("access-control-request-metho", name, 28)) { + return NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_REQUEST_METHOD; + } + break; + case 's': + if (memeq("access-control-expose-header", name, 28)) { + return NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_EXPOSE_HEADERS; + } + break; + } + break; + case 30: + switch (name[29]) { + case 's': + if (memeq("access-control-request-header", name, 29)) { + return NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_REQUEST_HEADERS; + } + break; + } + break; + case 32: + switch (name[31]) { + case 's': + if (memeq("access-control-allow-credential", name, 31)) { + return NGHTTP3_QPACK_TOKEN_ACCESS_CONTROL_ALLOW_CREDENTIALS; + } + break; + } + break; + } + return -1; +} + +static size_t table_space(size_t namelen, size_t valuelen) { + return NGHTTP3_QPACK_ENTRY_OVERHEAD + namelen + valuelen; +} + +static int qpack_nv_name_eq(const nghttp3_qpack_nv *a, const nghttp3_nv *b) { + return a->name->len == b->namelen && + memeq(a->name->base, b->name, b->namelen); +} + +static int qpack_nv_value_eq(const nghttp3_qpack_nv *a, const nghttp3_nv *b) { + return a->value->len == b->valuelen && + memeq(a->value->base, b->value, b->valuelen); +} + +static void qpack_map_init(nghttp3_qpack_map *map) { + memset(map, 0, sizeof(nghttp3_qpack_map)); +} + +static void qpack_map_insert(nghttp3_qpack_map *map, nghttp3_qpack_entry *ent) { + nghttp3_qpack_entry **bucket; + + bucket = &map->table[ent->hash & (NGHTTP3_QPACK_MAP_SIZE - 1)]; + + if (*bucket == NULL) { + *bucket = ent; + return; + } + + /* larger absidx is linked near the root */ + ent->map_next = *bucket; + *bucket = ent; +} + +static void qpack_map_remove(nghttp3_qpack_map *map, nghttp3_qpack_entry *ent) { + nghttp3_qpack_entry **dst; + + dst = &map->table[ent->hash & (NGHTTP3_QPACK_MAP_SIZE - 1)]; + + for (; *dst; dst = &(*dst)->map_next) { + if (*dst != ent) { + continue; + } + + *dst = ent->map_next; + ent->map_next = NULL; + return; + } +} + +/* + * qpack_context_can_reference returns nonzero if dynamic table entry + * at |absidx| can be referenced. In other words, it is within + * ctx->max_dtable_capacity. + */ +static int qpack_context_can_reference(nghttp3_qpack_context *ctx, + uint64_t absidx) { + nghttp3_qpack_entry *ent = nghttp3_qpack_context_dtable_get(ctx, absidx); + return ctx->dtable_sum - ent->sum <= ctx->max_dtable_capacity; +} + +/* |*ppb_match| (post-base match), if it is not NULL, is always exact + match. */ +static void encoder_qpack_map_find(nghttp3_qpack_encoder *encoder, + int *exact_match, + nghttp3_qpack_entry **pmatch, + nghttp3_qpack_entry **ppb_match, + const nghttp3_nv *nv, int32_t token, + uint32_t hash, uint64_t krcnt, + int allow_blocking, int name_only) { + nghttp3_qpack_entry *p; + + *exact_match = 0; + *pmatch = NULL; + *ppb_match = NULL; + + for (p = encoder->dtable_map.table[hash & (NGHTTP3_QPACK_MAP_SIZE - 1)]; p; + p = p->map_next) { + if (token != p->nv.token || + (token == -1 && (hash != p->hash || !qpack_nv_name_eq(&p->nv, nv))) || + !qpack_context_can_reference(&encoder->ctx, p->absidx)) { + continue; + } + if (allow_blocking || p->absidx + 1 <= krcnt) { + if (!*pmatch) { + *pmatch = p; + if (name_only) { + return; + } + } + if (qpack_nv_value_eq(&p->nv, nv)) { + *pmatch = p; + *exact_match = 1; + return; + } + } else if (!*ppb_match && qpack_nv_value_eq(&p->nv, nv)) { + *ppb_match = p; + } + } +} + +/* + * qpack_context_init initializes |ctx|. |hard_max_dtable_capacity| + * is the upper bound of the dynamic table capacity. |mem| is a + * memory allocator. + * + * The maximum dynamic table size is governed by + * ctx->max_dtable_capacity and it is initialized to 0. + * |hard_max_dtable_capacity| is the upper bound of + * ctx->max_dtable_capacity. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +static int qpack_context_init(nghttp3_qpack_context *ctx, + size_t hard_max_dtable_capacity, + size_t max_blocked_streams, + const nghttp3_mem *mem) { + int rv; + size_t len = 4096 / NGHTTP3_QPACK_ENTRY_OVERHEAD; + size_t len2; + + for (len2 = 1; len2 < len; len2 <<= 1) + ; + + rv = nghttp3_ringbuf_init(&ctx->dtable, len2, sizeof(nghttp3_qpack_entry *), + mem); + if (rv != 0) { + return rv; + } + + ctx->mem = mem; + ctx->dtable_size = 0; + ctx->dtable_sum = 0; + ctx->hard_max_dtable_capacity = hard_max_dtable_capacity; + ctx->max_dtable_capacity = 0; + ctx->max_blocked_streams = max_blocked_streams; + ctx->next_absidx = 0; + ctx->bad = 0; + + return 0; +} + +static void qpack_context_free(nghttp3_qpack_context *ctx) { + nghttp3_qpack_entry *ent; + size_t i, len = nghttp3_ringbuf_len(&ctx->dtable); + + for (i = 0; i < len; ++i) { + ent = *(nghttp3_qpack_entry **)nghttp3_ringbuf_get(&ctx->dtable, i); + nghttp3_qpack_entry_free(ent); + nghttp3_mem_free(ctx->mem, ent); + } + nghttp3_ringbuf_free(&ctx->dtable); +} + +static int ref_min_cnt_less(const nghttp3_pq_entry *lhsx, + const nghttp3_pq_entry *rhsx) { + nghttp3_qpack_header_block_ref *lhs = + nghttp3_struct_of(lhsx, nghttp3_qpack_header_block_ref, min_cnts_pe); + nghttp3_qpack_header_block_ref *rhs = + nghttp3_struct_of(rhsx, nghttp3_qpack_header_block_ref, min_cnts_pe); + + return lhs->min_cnt < rhs->min_cnt; +} + +typedef struct nghttp3_blocked_streams_key { + uint64_t max_cnt; + uint64_t id; +} nghttp3_blocked_streams_key; + +static int max_cnt_greater(const nghttp3_ksl_key *lhs, + const nghttp3_ksl_key *rhs) { + const nghttp3_blocked_streams_key *a = lhs; + const nghttp3_blocked_streams_key *b = rhs; + return a->max_cnt > b->max_cnt || (a->max_cnt == b->max_cnt && a->id < b->id); +} + +int nghttp3_qpack_encoder_init(nghttp3_qpack_encoder *encoder, + size_t hard_max_dtable_capacity, + const nghttp3_mem *mem) { + int rv; + + rv = qpack_context_init(&encoder->ctx, hard_max_dtable_capacity, 0, mem); + if (rv != 0) { + return rv; + } + + nghttp3_map_init(&encoder->streams, mem); + + nghttp3_ksl_init(&encoder->blocked_streams, max_cnt_greater, + sizeof(nghttp3_blocked_streams_key), mem); + + qpack_map_init(&encoder->dtable_map); + nghttp3_pq_init(&encoder->min_cnts, ref_min_cnt_less, mem); + + encoder->krcnt = 0; + encoder->state = NGHTTP3_QPACK_DS_STATE_OPCODE; + encoder->opcode = 0; + encoder->min_dtable_update = SIZE_MAX; + encoder->last_max_dtable_update = 0; + encoder->uninterrupted_decoderlen = 0; + encoder->flags = NGHTTP3_QPACK_ENCODER_FLAG_NONE; + + nghttp3_qpack_read_state_reset(&encoder->rstate); + + return 0; +} + +static int map_stream_free(void *data, void *ptr) { + const nghttp3_mem *mem = ptr; + nghttp3_qpack_stream *stream = data; + nghttp3_qpack_stream_del(stream, mem); + return 0; +} + +void nghttp3_qpack_encoder_free(nghttp3_qpack_encoder *encoder) { + nghttp3_pq_free(&encoder->min_cnts); + nghttp3_ksl_free(&encoder->blocked_streams); + nghttp3_map_each(&encoder->streams, map_stream_free, + (void *)encoder->ctx.mem); + nghttp3_map_free(&encoder->streams); + qpack_context_free(&encoder->ctx); +} + +void nghttp3_qpack_encoder_set_max_dtable_capacity( + nghttp3_qpack_encoder *encoder, size_t max_dtable_capacity) { + max_dtable_capacity = nghttp3_min_size(max_dtable_capacity, + encoder->ctx.hard_max_dtable_capacity); + + if (encoder->ctx.max_dtable_capacity == max_dtable_capacity) { + return; + } + + encoder->flags |= NGHTTP3_QPACK_ENCODER_FLAG_PENDING_SET_DTABLE_CAP; + + if (encoder->min_dtable_update > max_dtable_capacity) { + encoder->min_dtable_update = max_dtable_capacity; + encoder->ctx.max_dtable_capacity = max_dtable_capacity; + } + encoder->last_max_dtable_update = max_dtable_capacity; +} + +void nghttp3_qpack_encoder_set_max_blocked_streams( + nghttp3_qpack_encoder *encoder, size_t max_blocked_streams) { + encoder->ctx.max_blocked_streams = max_blocked_streams; +} + +uint64_t nghttp3_qpack_encoder_get_min_cnt(nghttp3_qpack_encoder *encoder) { + assert(!nghttp3_pq_empty(&encoder->min_cnts)); + + return nghttp3_struct_of(nghttp3_pq_top(&encoder->min_cnts), + nghttp3_qpack_header_block_ref, min_cnts_pe) + ->min_cnt; +} + +void nghttp3_qpack_encoder_shrink_dtable(nghttp3_qpack_encoder *encoder) { + nghttp3_ringbuf *dtable = &encoder->ctx.dtable; + const nghttp3_mem *mem = encoder->ctx.mem; + uint64_t min_cnt = UINT64_MAX; + size_t len; + nghttp3_qpack_entry *ent; + + if (encoder->ctx.dtable_size <= encoder->ctx.max_dtable_capacity) { + return; + } + + if (!nghttp3_pq_empty(&encoder->min_cnts)) { + min_cnt = nghttp3_qpack_encoder_get_min_cnt(encoder); + } + + for (; encoder->ctx.dtable_size > encoder->ctx.max_dtable_capacity;) { + len = nghttp3_ringbuf_len(dtable); + ent = *(nghttp3_qpack_entry **)nghttp3_ringbuf_get(dtable, len - 1); + if (ent->absidx + 1 == min_cnt) { + return; + } + + encoder->ctx.dtable_size -= + table_space(ent->nv.name->len, ent->nv.value->len); + + nghttp3_ringbuf_pop_back(dtable); + qpack_map_remove(&encoder->dtable_map, ent); + + nghttp3_qpack_entry_free(ent); + nghttp3_mem_free(mem, ent); + } +} + +/* + * qpack_encoder_add_stream_ref adds another dynamic table reference + * to a stream denoted by |stream_id|. |stream| must be NULL if no + * stream object is not found for the given stream ID. |max_cnt| and + * |min_cnt| is the maximum and minimum insert count it references + * respectively. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +static int qpack_encoder_add_stream_ref(nghttp3_qpack_encoder *encoder, + int64_t stream_id, + nghttp3_qpack_stream *stream, + uint64_t max_cnt, uint64_t min_cnt) { + nghttp3_qpack_header_block_ref *ref; + const nghttp3_mem *mem = encoder->ctx.mem; + uint64_t prev_max_cnt = 0; + int rv; + + if (stream == NULL) { + rv = nghttp3_qpack_stream_new(&stream, stream_id, mem); + if (rv != 0) { + assert(rv == NGHTTP3_ERR_NOMEM); + return rv; + } + rv = nghttp3_map_insert(&encoder->streams, + (nghttp3_map_key_type)stream->stream_id, stream); + if (rv != 0) { + assert(rv == NGHTTP3_ERR_NOMEM); + nghttp3_qpack_stream_del(stream, mem); + return rv; + } + } else { + prev_max_cnt = nghttp3_qpack_stream_get_max_cnt(stream); + if (nghttp3_qpack_encoder_stream_is_blocked(encoder, stream) && + max_cnt > prev_max_cnt) { + nghttp3_qpack_encoder_unblock_stream(encoder, stream); + } + } + + rv = nghttp3_qpack_header_block_ref_new(&ref, max_cnt, min_cnt, mem); + if (rv != 0) { + return rv; + } + + rv = nghttp3_qpack_stream_add_ref(stream, ref); + if (rv != 0) { + nghttp3_qpack_header_block_ref_del(ref, mem); + return rv; + } + + if (max_cnt > prev_max_cnt && + nghttp3_qpack_encoder_stream_is_blocked(encoder, stream)) { + rv = nghttp3_qpack_encoder_block_stream(encoder, stream); + if (rv != 0) { + return rv; + } + } + + return nghttp3_pq_push(&encoder->min_cnts, &ref->min_cnts_pe); +} + +static void qpack_encoder_remove_stream(nghttp3_qpack_encoder *encoder, + nghttp3_qpack_stream *stream) { + size_t i, len; + nghttp3_qpack_header_block_ref *ref; + + nghttp3_map_remove(&encoder->streams, + (nghttp3_map_key_type)stream->stream_id); + + len = nghttp3_ringbuf_len(&stream->refs); + for (i = 0; i < len; ++i) { + ref = + *(nghttp3_qpack_header_block_ref **)nghttp3_ringbuf_get(&stream->refs, i); + + assert(ref->min_cnts_pe.index != NGHTTP3_PQ_BAD_INDEX); + + nghttp3_pq_remove(&encoder->min_cnts, &ref->min_cnts_pe); + } +} + +/* + * reserve_buf ensures that |buf| contains at least |extra_size| of + * free space. In other words, if this function succeeds, + * nghttp3_buf_left(buf) >= extra_size holds. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +static int reserve_buf(nghttp3_buf *buf, size_t extra_size, + const nghttp3_mem *mem) { + size_t left = nghttp3_buf_left(buf); + size_t n = 32; + + if (left >= extra_size) { + return 0; + } + + n = nghttp3_max_size(n, nghttp3_buf_cap(buf) + extra_size - left); + + /* Check whether we are requesting too much memory */ + if (n > (1u << 31)) { + return NGHTTP3_ERR_NOMEM; + } + +#ifndef WIN32 + n = 1u << (32 - __builtin_clz((uint32_t)n - 1)); +#else /* defined(WIN32) */ + /* Round up to the next highest power of 2 from Bit Twiddling + Hacks */ + --n; + n |= n >> 1; + n |= n >> 2; + n |= n >> 4; + n |= n >> 8; + n |= n >> 16; + ++n; +#endif /* defined(WIN32) */ + + return nghttp3_buf_reserve(buf, n, mem); +} + +int nghttp3_qpack_encoder_encode(nghttp3_qpack_encoder *encoder, + nghttp3_buf *pbuf, nghttp3_buf *rbuf, + nghttp3_buf *ebuf, int64_t stream_id, + const nghttp3_nv *nva, size_t nvlen) { + size_t i; + uint64_t max_cnt = 0, min_cnt = UINT64_MAX; + uint64_t base; + int rv = 0; + int allow_blocking; + int blocked_stream; + nghttp3_qpack_stream *stream; + + if (encoder->ctx.bad) { + return NGHTTP3_ERR_QPACK_FATAL; + } + + rv = nghttp3_qpack_encoder_process_dtable_update(encoder, ebuf); + if (rv != 0) { + goto fail; + } + + base = encoder->ctx.next_absidx; + + stream = nghttp3_qpack_encoder_find_stream(encoder, stream_id); + blocked_stream = + stream && nghttp3_qpack_encoder_stream_is_blocked(encoder, stream); + allow_blocking = + blocked_stream || encoder->ctx.max_blocked_streams > + nghttp3_ksl_len(&encoder->blocked_streams); + + DEBUGF("qpack::encode: stream %ld blocked=%d allow_blocking=%d\n", stream_id, + blocked_stream, allow_blocking); + + for (i = 0; i < nvlen; ++i) { + rv = nghttp3_qpack_encoder_encode_nv(encoder, &max_cnt, &min_cnt, rbuf, + ebuf, &nva[i], base, allow_blocking); + if (rv != 0) { + goto fail; + } + } + + nghttp3_qpack_encoder_write_field_section_prefix(encoder, pbuf, max_cnt, + base); + + encoder->uninterrupted_decoderlen = 0; + + /* TODO If max_cnt == 0, no reference is made to dtable. */ + if (!max_cnt) { + return 0; + } + + rv = + qpack_encoder_add_stream_ref(encoder, stream_id, stream, max_cnt, min_cnt); + if (rv != 0) { + goto fail; + } + + return 0; + +fail: + encoder->ctx.bad = 1; + return rv; +} + +/* + * qpack_write_number writes variable integer to |rbuf|. |num| is an + * integer to write. |prefix| is a prefix of variable integer + * encoding. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +static int qpack_write_number(nghttp3_buf *rbuf, uint8_t fb, uint64_t num, + size_t prefix, const nghttp3_mem *mem) { + int rv; + size_t len = nghttp3_qpack_put_varint_len(num, prefix); + uint8_t *p; + + rv = reserve_buf(rbuf, len, mem); + if (rv != 0) { + return rv; + } + + p = rbuf->last; + + *p = fb; + p = nghttp3_qpack_put_varint(p, num, prefix); + + assert((size_t)(p - rbuf->last) == len); + + rbuf->last = p; + + return 0; +} + +int nghttp3_qpack_encoder_process_dtable_update(nghttp3_qpack_encoder *encoder, + nghttp3_buf *ebuf) { + int rv; + + nghttp3_qpack_encoder_shrink_dtable(encoder); + + if (encoder->ctx.max_dtable_capacity < encoder->ctx.dtable_size || + !(encoder->flags & NGHTTP3_QPACK_ENCODER_FLAG_PENDING_SET_DTABLE_CAP)) { + return 0; + } + + if (encoder->min_dtable_update < encoder->last_max_dtable_update) { + rv = nghttp3_qpack_encoder_write_set_dtable_cap(encoder, ebuf, + encoder->min_dtable_update); + if (rv != 0) { + return rv; + } + } + + rv = nghttp3_qpack_encoder_write_set_dtable_cap( + encoder, ebuf, encoder->last_max_dtable_update); + if (rv != 0) { + return rv; + } + + encoder->flags &= (uint8_t)~NGHTTP3_QPACK_ENCODER_FLAG_PENDING_SET_DTABLE_CAP; + encoder->min_dtable_update = SIZE_MAX; + encoder->ctx.max_dtable_capacity = encoder->last_max_dtable_update; + + return 0; +} + +int nghttp3_qpack_encoder_write_set_dtable_cap(nghttp3_qpack_encoder *encoder, + nghttp3_buf *ebuf, size_t cap) { + DEBUGF("qpack::encode: Set Dynamic Table Capacity capacity=%zu\n", cap); + return qpack_write_number(ebuf, 0x20, cap, 5, encoder->ctx.mem); +} + +nghttp3_qpack_stream * +nghttp3_qpack_encoder_find_stream(nghttp3_qpack_encoder *encoder, + int64_t stream_id) { + return nghttp3_map_find(&encoder->streams, (nghttp3_map_key_type)stream_id); +} + +int nghttp3_qpack_encoder_stream_is_blocked(nghttp3_qpack_encoder *encoder, + nghttp3_qpack_stream *stream) { + return stream && encoder->krcnt < nghttp3_qpack_stream_get_max_cnt(stream); +} + +static uint32_t qpack_hash_name(const nghttp3_nv *nv) { + /* 32 bit FNV-1a: http://isthe.com/chongo/tech/comp/fnv/ */ + uint32_t h = 2166136261u; + size_t i; + + for (i = 0; i < nv->namelen; ++i) { + h ^= nv->name[i]; + h += (h << 1) + (h << 4) + (h << 7) + (h << 8) + (h << 24); + } + + return h; +} + +/* + * qpack_encoder_decide_indexing_mode determines and returns indexing + * mode for header field |nv|. |token| is a token of header field + * name. + */ +static nghttp3_qpack_indexing_mode +qpack_encoder_decide_indexing_mode(nghttp3_qpack_encoder *encoder, + const nghttp3_nv *nv, int32_t token) { + if (nv->flags & NGHTTP3_NV_FLAG_NEVER_INDEX) { + return NGHTTP3_QPACK_INDEXING_MODE_NEVER; + } + + switch (token) { + case NGHTTP3_QPACK_TOKEN_AUTHORIZATION: + return NGHTTP3_QPACK_INDEXING_MODE_NEVER; + case NGHTTP3_QPACK_TOKEN_COOKIE: + if (nv->valuelen < 20) { + return NGHTTP3_QPACK_INDEXING_MODE_NEVER; + } + break; + case -1: + case NGHTTP3_QPACK_TOKEN__PATH: + case NGHTTP3_QPACK_TOKEN_AGE: + case NGHTTP3_QPACK_TOKEN_CONTENT_LENGTH: + case NGHTTP3_QPACK_TOKEN_ETAG: + case NGHTTP3_QPACK_TOKEN_IF_MODIFIED_SINCE: + case NGHTTP3_QPACK_TOKEN_IF_NONE_MATCH: + case NGHTTP3_QPACK_TOKEN_LOCATION: + case NGHTTP3_QPACK_TOKEN_SET_COOKIE: + if (nv->flags & NGHTTP3_NV_FLAG_TRY_INDEX) { + break; + } + + return NGHTTP3_QPACK_INDEXING_MODE_LITERAL; + case NGHTTP3_QPACK_TOKEN_HOST: + case NGHTTP3_QPACK_TOKEN_TE: + case NGHTTP3_QPACK_TOKEN__PROTOCOL: + case NGHTTP3_QPACK_TOKEN_PRIORITY: + break; + default: + if (nv->flags & NGHTTP3_NV_FLAG_TRY_INDEX) { + break; + } + + if (token >= 1000) { + return NGHTTP3_QPACK_INDEXING_MODE_LITERAL; + } + } + + if (table_space(nv->namelen, nv->valuelen) > + encoder->ctx.max_dtable_capacity * 3 / 4) { + return NGHTTP3_QPACK_INDEXING_MODE_LITERAL; + } + + return NGHTTP3_QPACK_INDEXING_MODE_STORE; +} + +/* + * qpack_encoder_can_index returns nonzero if an entry which occupies + * |need| bytes can be inserted into dynamic table. |min_cnt| is the + * minimum insert count which blocked stream requires. + */ +static int qpack_encoder_can_index(nghttp3_qpack_encoder *encoder, size_t need, + uint64_t min_cnt) { + size_t avail = 0; + size_t len; + uint64_t gmin_cnt; + nghttp3_qpack_entry *min_ent, *last_ent; + nghttp3_ringbuf *dtable = &encoder->ctx.dtable; + + if (encoder->ctx.max_dtable_capacity > encoder->ctx.dtable_size) { + avail = encoder->ctx.max_dtable_capacity - encoder->ctx.dtable_size; + if (need <= avail) { + return 1; + } + } + + if (!nghttp3_pq_empty(&encoder->min_cnts)) { + gmin_cnt = nghttp3_qpack_encoder_get_min_cnt(encoder); + min_cnt = nghttp3_min_uint64(min_cnt, gmin_cnt); + } + + if (min_cnt == UINT64_MAX) { + return encoder->ctx.max_dtable_capacity >= need; + } + + min_ent = nghttp3_qpack_context_dtable_get(&encoder->ctx, min_cnt - 1); + + len = nghttp3_ringbuf_len(&encoder->ctx.dtable); + assert(len); + last_ent = *(nghttp3_qpack_entry **)nghttp3_ringbuf_get(dtable, len - 1); + + if (min_ent == last_ent) { + return 0; + } + + return avail + min_ent->sum - last_ent->sum >= need; +} + +/* + * qpack_encoder_can_index_nv returns nonzero if header field |nv| can + * be inserted into dynamic table. |min_cnt| is the minimum insert + * count which blocked stream requires. + */ +static int qpack_encoder_can_index_nv(nghttp3_qpack_encoder *encoder, + const nghttp3_nv *nv, uint64_t min_cnt) { + return qpack_encoder_can_index( + encoder, table_space(nv->namelen, nv->valuelen), min_cnt); +} + +/* + * qpack_encoder_can_index_duplicate returns nonzero if an entry at + * |absidx| in dynamic table can be inserted to dynamic table as + * duplicate. |min_cnt| is the minimum insert count which blocked + * stream requires. + */ +static int qpack_encoder_can_index_duplicate(nghttp3_qpack_encoder *encoder, + uint64_t absidx, + uint64_t min_cnt) { + nghttp3_qpack_entry *ent = + nghttp3_qpack_context_dtable_get(&encoder->ctx, absidx); + + return qpack_encoder_can_index( + encoder, table_space(ent->nv.name->len, ent->nv.value->len), min_cnt); +} + +/* + * qpack_context_check_draining returns nonzero if an entry at + * |absidx| in dynamic table is one of draining entries. + */ +static int qpack_context_check_draining(nghttp3_qpack_context *ctx, + uint64_t absidx) { + const size_t safe = ctx->max_dtable_capacity - + nghttp3_min_size(512, ctx->max_dtable_capacity * 1 / 8); + nghttp3_qpack_entry *ent = nghttp3_qpack_context_dtable_get(ctx, absidx); + + return ctx->dtable_sum - ent->sum > safe; +} + +int nghttp3_qpack_encoder_encode_nv(nghttp3_qpack_encoder *encoder, + uint64_t *pmax_cnt, uint64_t *pmin_cnt, + nghttp3_buf *rbuf, nghttp3_buf *ebuf, + const nghttp3_nv *nv, uint64_t base, + int allow_blocking) { + uint32_t hash = 0; + int32_t token; + nghttp3_qpack_indexing_mode indexing_mode; + nghttp3_qpack_lookup_result sres = {-1, 0, -1}, dres = {-1, 0, -1}; + nghttp3_qpack_entry *new_ent = NULL; + int static_entry; + int just_index = 0; + int rv; + + token = qpack_lookup_token(nv->name, nv->namelen); + static_entry = token != -1 && (size_t)token < nghttp3_arraylen(token_stable); + + indexing_mode = qpack_encoder_decide_indexing_mode(encoder, nv, token); + + if (static_entry) { + sres = nghttp3_qpack_lookup_stable(nv, token, indexing_mode); + if (sres.index != -1 && sres.name_value_match) { + return nghttp3_qpack_encoder_write_static_indexed(encoder, rbuf, + (size_t)sres.index); + } + } + + if (static_entry) { + hash = token_stable[token].hash; + } else { + switch (token) { + case NGHTTP3_QPACK_TOKEN_HOST: + hash = 2952701295u; + break; + case NGHTTP3_QPACK_TOKEN_TE: + hash = 1011170994u; + break; + case NGHTTP3_QPACK_TOKEN__PROTOCOL: + hash = 1128642621u; + break; + case NGHTTP3_QPACK_TOKEN_PRIORITY: + hash = 2498028297u; + break; + default: + hash = qpack_hash_name(nv); + } + } + + if (nghttp3_map_size(&encoder->streams) < NGHTTP3_QPACK_MAX_QPACK_STREAMS) { + dres = nghttp3_qpack_encoder_lookup_dtable( + encoder, nv, token, hash, indexing_mode, encoder->krcnt, allow_blocking); + just_index = + indexing_mode == NGHTTP3_QPACK_INDEXING_MODE_STORE && dres.pb_index == -1; + } + + if (dres.index != -1 && dres.name_value_match) { + if (allow_blocking && + qpack_context_check_draining(&encoder->ctx, (size_t)dres.index) && + qpack_encoder_can_index_duplicate(encoder, (size_t)dres.index, + *pmin_cnt)) { + rv = nghttp3_qpack_encoder_write_duplicate_insert(encoder, ebuf, + (size_t)dres.index); + if (rv != 0) { + return rv; + } + rv = + nghttp3_qpack_encoder_dtable_duplicate_add(encoder, (size_t)dres.index); + if (rv != 0) { + return rv; + } + + new_ent = nghttp3_qpack_context_dtable_top(&encoder->ctx); + dres.index = (nghttp3_ssize)new_ent->absidx; + } + *pmax_cnt = nghttp3_max_uint64(*pmax_cnt, (uint64_t)(dres.index + 1)); + *pmin_cnt = nghttp3_min_uint64(*pmin_cnt, (uint64_t)(dres.index + 1)); + + return nghttp3_qpack_encoder_write_dynamic_indexed( + encoder, rbuf, (size_t)dres.index, base); + } + + if (sres.index != -1) { + if (just_index && qpack_encoder_can_index_nv(encoder, nv, *pmin_cnt)) { + rv = nghttp3_qpack_encoder_write_static_insert(encoder, ebuf, + (size_t)sres.index, nv); + if (rv != 0) { + return rv; + } + rv = nghttp3_qpack_encoder_dtable_static_add(encoder, (size_t)sres.index, + nv, hash); + if (rv != 0) { + return rv; + } + if (allow_blocking) { + new_ent = nghttp3_qpack_context_dtable_top(&encoder->ctx); + *pmax_cnt = nghttp3_max_uint64(*pmax_cnt, new_ent->absidx + 1); + *pmin_cnt = nghttp3_min_uint64(*pmin_cnt, new_ent->absidx + 1); + + return nghttp3_qpack_encoder_write_dynamic_indexed( + encoder, rbuf, new_ent->absidx, base); + } + } + + return nghttp3_qpack_encoder_write_static_indexed_name( + encoder, rbuf, (size_t)sres.index, nv); + } + + if (dres.index != -1) { + if (just_index && + qpack_encoder_can_index_nv( + encoder, nv, + allow_blocking + ? *pmin_cnt + : nghttp3_min_uint64((uint64_t)dres.index + 1, *pmin_cnt))) { + rv = nghttp3_qpack_encoder_write_dynamic_insert(encoder, ebuf, + (size_t)dres.index, nv); + if (rv != 0) { + return rv; + } + + if (!allow_blocking) { + *pmin_cnt = nghttp3_min_uint64(*pmin_cnt, (uint64_t)dres.index + 1); + } + + rv = nghttp3_qpack_encoder_dtable_dynamic_add(encoder, (size_t)dres.index, + nv, hash); + if (rv != 0) { + return rv; + } + + if (allow_blocking) { + new_ent = nghttp3_qpack_context_dtable_top(&encoder->ctx); + *pmax_cnt = nghttp3_max_uint64(*pmax_cnt, new_ent->absidx + 1); + *pmin_cnt = nghttp3_min_uint64(*pmin_cnt, new_ent->absidx + 1); + + return nghttp3_qpack_encoder_write_dynamic_indexed( + encoder, rbuf, new_ent->absidx, base); + } + } + + *pmax_cnt = nghttp3_max_uint64(*pmax_cnt, (uint64_t)(dres.index + 1)); + *pmin_cnt = nghttp3_min_uint64(*pmin_cnt, (uint64_t)(dres.index + 1)); + + return nghttp3_qpack_encoder_write_dynamic_indexed_name( + encoder, rbuf, (size_t)dres.index, base, nv); + } + + if (just_index && qpack_encoder_can_index_nv(encoder, nv, *pmin_cnt)) { + rv = nghttp3_qpack_encoder_dtable_literal_add(encoder, nv, token, hash); + if (rv != 0) { + return rv; + } + rv = nghttp3_qpack_encoder_write_literal_insert(encoder, ebuf, nv); + if (rv != 0) { + return rv; + } + if (allow_blocking) { + new_ent = nghttp3_qpack_context_dtable_top(&encoder->ctx); + *pmax_cnt = nghttp3_max_uint64(*pmax_cnt, new_ent->absidx + 1); + *pmin_cnt = nghttp3_min_uint64(*pmin_cnt, new_ent->absidx + 1); + + return nghttp3_qpack_encoder_write_dynamic_indexed(encoder, rbuf, + new_ent->absidx, base); + } + } + + return nghttp3_qpack_encoder_write_literal(encoder, rbuf, nv); +} + +nghttp3_qpack_lookup_result +nghttp3_qpack_lookup_stable(const nghttp3_nv *nv, int32_t token, + nghttp3_qpack_indexing_mode indexing_mode) { + nghttp3_qpack_lookup_result res = {(nghttp3_ssize)token_stable[token].absidx, + 0, -1}; + nghttp3_qpack_static_entry *ent; + nghttp3_qpack_static_header *hdr; + size_t i; + + assert(token >= 0); + + if (indexing_mode == NGHTTP3_QPACK_INDEXING_MODE_NEVER) { + return res; + } + + for (i = (size_t)token; + i < nghttp3_arraylen(token_stable) && token_stable[i].token == token; + ++i) { + ent = &token_stable[i]; + hdr = &stable[ent->absidx]; + if (hdr->value.len == nv->valuelen && + memeq(hdr->value.base, nv->value, nv->valuelen)) { + res.index = (nghttp3_ssize)ent->absidx; + res.name_value_match = 1; + return res; + } + } + return res; +} + +nghttp3_qpack_lookup_result nghttp3_qpack_encoder_lookup_dtable( + nghttp3_qpack_encoder *encoder, const nghttp3_nv *nv, int32_t token, + uint32_t hash, nghttp3_qpack_indexing_mode indexing_mode, uint64_t krcnt, + int allow_blocking) { + nghttp3_qpack_lookup_result res = {-1, 0, -1}; + int exact_match = 0; + nghttp3_qpack_entry *match, *pb_match; + + encoder_qpack_map_find(encoder, &exact_match, &match, &pb_match, nv, token, + hash, krcnt, allow_blocking, + indexing_mode == NGHTTP3_QPACK_INDEXING_MODE_NEVER); + if (match) { + res.index = (nghttp3_ssize)match->absidx; + res.name_value_match = exact_match; + } + if (pb_match) { + res.pb_index = (nghttp3_ssize)pb_match->absidx; + } + + return res; +} + +int nghttp3_qpack_header_block_ref_new(nghttp3_qpack_header_block_ref **pref, + uint64_t max_cnt, uint64_t min_cnt, + const nghttp3_mem *mem) { + nghttp3_qpack_header_block_ref *ref = + nghttp3_mem_malloc(mem, sizeof(nghttp3_qpack_header_block_ref)); + + if (ref == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + ref->max_cnts_pe.index = NGHTTP3_PQ_BAD_INDEX; + ref->min_cnts_pe.index = NGHTTP3_PQ_BAD_INDEX; + ref->max_cnt = max_cnt; + ref->min_cnt = min_cnt; + + *pref = ref; + + return 0; +} + +void nghttp3_qpack_header_block_ref_del(nghttp3_qpack_header_block_ref *ref, + const nghttp3_mem *mem) { + nghttp3_mem_free(mem, ref); +} + +static int ref_max_cnt_greater(const nghttp3_pq_entry *lhsx, + const nghttp3_pq_entry *rhsx) { + const nghttp3_qpack_header_block_ref *lhs = + nghttp3_struct_of(lhsx, nghttp3_qpack_header_block_ref, max_cnts_pe); + const nghttp3_qpack_header_block_ref *rhs = + nghttp3_struct_of(rhsx, nghttp3_qpack_header_block_ref, max_cnts_pe); + + return lhs->max_cnt > rhs->max_cnt; +} + +int nghttp3_qpack_stream_new(nghttp3_qpack_stream **pstream, int64_t stream_id, + const nghttp3_mem *mem) { + int rv; + nghttp3_qpack_stream *stream; + + stream = nghttp3_mem_malloc(mem, sizeof(nghttp3_qpack_stream)); + if (stream == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + rv = nghttp3_ringbuf_init(&stream->refs, 4, + sizeof(nghttp3_qpack_header_block_ref *), mem); + if (rv != 0) { + nghttp3_mem_free(mem, stream); + return rv; + } + + nghttp3_pq_init(&stream->max_cnts, ref_max_cnt_greater, mem); + + stream->stream_id = stream_id; + + *pstream = stream; + + return 0; +} + +void nghttp3_qpack_stream_del(nghttp3_qpack_stream *stream, + const nghttp3_mem *mem) { + nghttp3_qpack_header_block_ref *ref; + size_t i, len; + + if (stream == NULL) { + return; + } + + nghttp3_pq_free(&stream->max_cnts); + + len = nghttp3_ringbuf_len(&stream->refs); + for (i = 0; i < len; ++i) { + ref = + *(nghttp3_qpack_header_block_ref **)nghttp3_ringbuf_get(&stream->refs, i); + nghttp3_qpack_header_block_ref_del(ref, mem); + } + + nghttp3_ringbuf_free(&stream->refs); + + nghttp3_mem_free(mem, stream); +} + +uint64_t nghttp3_qpack_stream_get_max_cnt(const nghttp3_qpack_stream *stream) { + nghttp3_qpack_header_block_ref *ref; + + if (nghttp3_pq_empty(&stream->max_cnts)) { + return 0; + } + + ref = nghttp3_struct_of(nghttp3_pq_top(&stream->max_cnts), + nghttp3_qpack_header_block_ref, max_cnts_pe); + return ref->max_cnt; +} + +int nghttp3_qpack_stream_add_ref(nghttp3_qpack_stream *stream, + nghttp3_qpack_header_block_ref *ref) { + nghttp3_qpack_header_block_ref **dest; + int rv; + + if (nghttp3_ringbuf_full(&stream->refs)) { + rv = nghttp3_ringbuf_reserve(&stream->refs, + nghttp3_ringbuf_len(&stream->refs) * 2); + if (rv != 0) { + return rv; + } + } + + dest = nghttp3_ringbuf_push_back(&stream->refs); + *dest = ref; + + return nghttp3_pq_push(&stream->max_cnts, &ref->max_cnts_pe); +} + +void nghttp3_qpack_stream_pop_ref(nghttp3_qpack_stream *stream) { + nghttp3_qpack_header_block_ref *ref; + + assert(nghttp3_ringbuf_len(&stream->refs)); + + ref = + *(nghttp3_qpack_header_block_ref **)nghttp3_ringbuf_get(&stream->refs, 0); + + assert(ref->max_cnts_pe.index != NGHTTP3_PQ_BAD_INDEX); + + nghttp3_pq_remove(&stream->max_cnts, &ref->max_cnts_pe); + + nghttp3_ringbuf_pop_front(&stream->refs); +} + +int nghttp3_qpack_encoder_write_static_indexed(nghttp3_qpack_encoder *encoder, + nghttp3_buf *rbuf, + uint64_t absidx) { + DEBUGF("qpack::encode: Indexed Field Line (static) absidx=%" PRIu64 "\n", + absidx); + return qpack_write_number(rbuf, 0xc0, absidx, 6, encoder->ctx.mem); +} + +int nghttp3_qpack_encoder_write_dynamic_indexed(nghttp3_qpack_encoder *encoder, + nghttp3_buf *rbuf, + uint64_t absidx, + uint64_t base) { + DEBUGF("qpack::encode: Indexed Field Line (dynamic) absidx=%" PRIu64 + " base=%" PRIu64 "\n", + absidx, base); + + if (absidx < base) { + return qpack_write_number(rbuf, 0x80, base - absidx - 1, 6, + encoder->ctx.mem); + } + + return qpack_write_number(rbuf, 0x10, absidx - base, 4, encoder->ctx.mem); +} + +/* + * qpack_encoder_write_indexed_name writes generic indexed name. |fb| + * is the first byte. |nameidx| is an index of referenced name. + * |prefix| is a prefix of variable integer encoding. |nv| is a + * header field to encode. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +static int qpack_encoder_write_indexed_name(nghttp3_qpack_encoder *encoder, + nghttp3_buf *buf, uint8_t fb, + uint64_t nameidx, size_t prefix, + const nghttp3_nv *nv) { + int rv; + size_t len = nghttp3_qpack_put_varint_len(nameidx, prefix); + uint8_t *p; + size_t hlen; + int h = 0; + + hlen = nghttp3_qpack_huffman_encode_count(nv->value, nv->valuelen); + if (hlen * 4 < nv->valuelen * 3) { + h = 1; + len += nghttp3_qpack_put_varint_len(hlen, 7) + hlen; + } else { + len += nghttp3_qpack_put_varint_len(nv->valuelen, 7) + nv->valuelen; + } + + rv = reserve_buf(buf, len, encoder->ctx.mem); + if (rv != 0) { + return rv; + } + + p = buf->last; + + *p = fb; + p = nghttp3_qpack_put_varint(p, nameidx, prefix); + + if (h) { + *p = 0x80; + p = nghttp3_qpack_put_varint(p, hlen, 7); + p = nghttp3_qpack_huffman_encode(p, nv->value, nv->valuelen); + } else { + *p = 0; + p = nghttp3_qpack_put_varint(p, nv->valuelen, 7); + if (nv->valuelen) { + p = nghttp3_cpymem(p, nv->value, nv->valuelen); + } + } + + assert((size_t)(p - buf->last) == len); + + buf->last = p; + + return 0; +} + +int nghttp3_qpack_encoder_write_static_indexed_name( + nghttp3_qpack_encoder *encoder, nghttp3_buf *rbuf, uint64_t absidx, + const nghttp3_nv *nv) { + uint8_t fb = + (uint8_t)(0x50 | ((nv->flags & NGHTTP3_NV_FLAG_NEVER_INDEX) ? 0x20 : 0)); + + DEBUGF("qpack::encode: Literal Field Line With Name Reference (static) " + "absidx=%" PRIu64 " never=%d\n", + absidx, (nv->flags & NGHTTP3_NV_FLAG_NEVER_INDEX) != 0); + return qpack_encoder_write_indexed_name(encoder, rbuf, fb, absidx, 4, nv); +} + +int nghttp3_qpack_encoder_write_dynamic_indexed_name( + nghttp3_qpack_encoder *encoder, nghttp3_buf *rbuf, uint64_t absidx, + uint64_t base, const nghttp3_nv *nv) { + uint8_t fb; + + DEBUGF("qpack::encode: Literal Field Line With Name Reference (dynamic) " + "absidx=%" PRIu64 " base=%" PRIu64 " never=%d\n", + absidx, base, (nv->flags & NGHTTP3_NV_FLAG_NEVER_INDEX) != 0); + + if (absidx < base) { + fb = + (uint8_t)(0x40 | ((nv->flags & NGHTTP3_NV_FLAG_NEVER_INDEX) ? 0x20 : 0)); + return qpack_encoder_write_indexed_name(encoder, rbuf, fb, + base - absidx - 1, 4, nv); + } + + fb = (nv->flags & NGHTTP3_NV_FLAG_NEVER_INDEX) ? 0x08 : 0; + return qpack_encoder_write_indexed_name(encoder, rbuf, fb, absidx - base, 3, + nv); +} + +/* + * qpack_encoder_write_literal writes generic literal header field + * representation. |fb| is a first byte. |prefix| is a prefix of + * variable integer encoding for name length. |nv| is a header field + * to encode. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +static int qpack_encoder_write_literal(nghttp3_qpack_encoder *encoder, + nghttp3_buf *buf, uint8_t fb, + size_t prefix, const nghttp3_nv *nv) { + int rv; + size_t len; + uint8_t *p; + size_t nhlen, vhlen; + int nh = 0, vh = 0; + + nhlen = nghttp3_qpack_huffman_encode_count(nv->name, nv->namelen); + if (nhlen * 4 < nv->namelen * 3) { + nh = 1; + len = nghttp3_qpack_put_varint_len(nhlen, prefix) + nhlen; + } else { + len = nghttp3_qpack_put_varint_len(nv->namelen, prefix) + nv->namelen; + } + + vhlen = nghttp3_qpack_huffman_encode_count(nv->value, nv->valuelen); + if (vhlen * 4 < nv->valuelen * 3) { + vh = 1; + len += nghttp3_qpack_put_varint_len(vhlen, 7) + vhlen; + } else { + len += nghttp3_qpack_put_varint_len(nv->valuelen, 7) + nv->valuelen; + } + + rv = reserve_buf(buf, len, encoder->ctx.mem); + if (rv != 0) { + return rv; + } + + p = buf->last; + + *p = fb; + if (nh) { + *p |= (uint8_t)(1 << prefix); + p = nghttp3_qpack_put_varint(p, nhlen, prefix); + p = nghttp3_qpack_huffman_encode(p, nv->name, nv->namelen); + } else { + p = nghttp3_qpack_put_varint(p, nv->namelen, prefix); + if (nv->namelen) { + p = nghttp3_cpymem(p, nv->name, nv->namelen); + } + } + + *p = 0; + + if (vh) { + *p |= 0x80; + p = nghttp3_qpack_put_varint(p, vhlen, 7); + p = nghttp3_qpack_huffman_encode(p, nv->value, nv->valuelen); + } else { + p = nghttp3_qpack_put_varint(p, nv->valuelen, 7); + if (nv->valuelen) { + p = nghttp3_cpymem(p, nv->value, nv->valuelen); + } + } + + assert((size_t)(p - buf->last) == len); + + buf->last = p; + + return 0; +} + +int nghttp3_qpack_encoder_write_literal(nghttp3_qpack_encoder *encoder, + nghttp3_buf *rbuf, + const nghttp3_nv *nv) { + uint8_t fb = + (uint8_t)(0x20 | ((nv->flags & NGHTTP3_NV_FLAG_NEVER_INDEX) ? 0x10 : 0)); + + DEBUGF("qpack::encode: Literal Field Line With Literal Name\n"); + return qpack_encoder_write_literal(encoder, rbuf, fb, 3, nv); +} + +int nghttp3_qpack_encoder_write_static_insert(nghttp3_qpack_encoder *encoder, + nghttp3_buf *ebuf, + uint64_t absidx, + const nghttp3_nv *nv) { + DEBUGF("qpack::encode: Insert With Name Reference (static) absidx=%" PRIu64 + "\n", + absidx); + return qpack_encoder_write_indexed_name(encoder, ebuf, 0xc0, absidx, 6, nv); +} + +int nghttp3_qpack_encoder_write_dynamic_insert(nghttp3_qpack_encoder *encoder, + nghttp3_buf *ebuf, + uint64_t absidx, + const nghttp3_nv *nv) { + DEBUGF("qpack::encode: Insert With Name Reference (dynamic) absidx=%" PRIu64 + "\n", + absidx); + return qpack_encoder_write_indexed_name( + encoder, ebuf, 0x80, encoder->ctx.next_absidx - absidx - 1, 6, nv); +} + +int nghttp3_qpack_encoder_write_duplicate_insert(nghttp3_qpack_encoder *encoder, + nghttp3_buf *ebuf, + uint64_t absidx) { + uint64_t idx = encoder->ctx.next_absidx - absidx - 1; + size_t len = nghttp3_qpack_put_varint_len(idx, 5); + uint8_t *p; + int rv; + + DEBUGF("qpack::encode: Insert duplicate absidx=%" PRIu64 "\n", absidx); + + rv = reserve_buf(ebuf, len, encoder->ctx.mem); + if (rv != 0) { + return rv; + } + + p = ebuf->last; + + *p = 0; + p = nghttp3_qpack_put_varint(p, idx, 5); + + assert((size_t)(p - ebuf->last) == len); + + ebuf->last = p; + + return 0; +} + +int nghttp3_qpack_encoder_write_literal_insert(nghttp3_qpack_encoder *encoder, + nghttp3_buf *ebuf, + const nghttp3_nv *nv) { + DEBUGF("qpack::encode: Insert With Literal Name\n"); + return qpack_encoder_write_literal(encoder, ebuf, 0x40, 5, nv); +} + +int nghttp3_qpack_context_dtable_add(nghttp3_qpack_context *ctx, + nghttp3_qpack_nv *qnv, + nghttp3_qpack_map *dtable_map, + uint32_t hash) { + nghttp3_qpack_entry *new_ent, **p, *ent; + const nghttp3_mem *mem = ctx->mem; + size_t space; + size_t i; + int rv; + + space = table_space(qnv->name->len, qnv->value->len); + + assert(space <= ctx->max_dtable_capacity); + + while (ctx->dtable_size + space > ctx->max_dtable_capacity) { + i = nghttp3_ringbuf_len(&ctx->dtable); + assert(i); + ent = *(nghttp3_qpack_entry **)nghttp3_ringbuf_get(&ctx->dtable, i - 1); + + ctx->dtable_size -= table_space(ent->nv.name->len, ent->nv.value->len); + + nghttp3_ringbuf_pop_back(&ctx->dtable); + if (dtable_map) { + qpack_map_remove(dtable_map, ent); + } + + nghttp3_qpack_entry_free(ent); + nghttp3_mem_free(mem, ent); + } + + new_ent = nghttp3_mem_malloc(mem, sizeof(nghttp3_qpack_entry)); + if (new_ent == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + nghttp3_qpack_entry_init(new_ent, qnv, ctx->dtable_sum, ctx->next_absidx++, + hash); + + if (nghttp3_ringbuf_full(&ctx->dtable)) { + rv = nghttp3_ringbuf_reserve(&ctx->dtable, + nghttp3_ringbuf_len(&ctx->dtable) * 2); + if (rv != 0) { + goto fail; + } + } + + p = nghttp3_ringbuf_push_front(&ctx->dtable); + *p = new_ent; + + if (dtable_map) { + qpack_map_insert(dtable_map, new_ent); + } + + ctx->dtable_size += space; + ctx->dtable_sum += space; + + return 0; + +fail: + nghttp3_qpack_entry_free(new_ent); + nghttp3_mem_free(mem, new_ent); + + return rv; +} + +int nghttp3_qpack_encoder_dtable_static_add(nghttp3_qpack_encoder *encoder, + uint64_t absidx, + const nghttp3_nv *nv, + uint32_t hash) { + const nghttp3_qpack_static_header *shd; + nghttp3_qpack_nv qnv; + const nghttp3_mem *mem = encoder->ctx.mem; + int rv; + + rv = nghttp3_rcbuf_new2(&qnv.value, nv->value, nv->valuelen, mem); + if (rv != 0) { + return rv; + } + + assert(nghttp3_arraylen(stable) > absidx); + + shd = &stable[absidx]; + + qnv.name = (nghttp3_rcbuf *)&shd->name; + qnv.token = shd->token; + qnv.flags = NGHTTP3_NV_FLAG_NONE; + + rv = nghttp3_qpack_context_dtable_add(&encoder->ctx, &qnv, + &encoder->dtable_map, hash); + + nghttp3_rcbuf_decref(qnv.value); + + return rv; +} + +int nghttp3_qpack_encoder_dtable_dynamic_add(nghttp3_qpack_encoder *encoder, + uint64_t absidx, + const nghttp3_nv *nv, + uint32_t hash) { + nghttp3_qpack_nv qnv; + nghttp3_qpack_entry *ent; + const nghttp3_mem *mem = encoder->ctx.mem; + int rv; + + rv = nghttp3_rcbuf_new2(&qnv.value, nv->value, nv->valuelen, mem); + if (rv != 0) { + return rv; + } + + ent = nghttp3_qpack_context_dtable_get(&encoder->ctx, absidx); + + qnv.name = ent->nv.name; + qnv.token = ent->nv.token; + qnv.flags = NGHTTP3_NV_FLAG_NONE; + + nghttp3_rcbuf_incref(qnv.name); + + rv = nghttp3_qpack_context_dtable_add(&encoder->ctx, &qnv, + &encoder->dtable_map, hash); + + nghttp3_rcbuf_decref(qnv.value); + nghttp3_rcbuf_decref(qnv.name); + + return rv; +} + +int nghttp3_qpack_encoder_dtable_duplicate_add(nghttp3_qpack_encoder *encoder, + uint64_t absidx) { + nghttp3_qpack_nv qnv; + nghttp3_qpack_entry *ent; + int rv; + + ent = nghttp3_qpack_context_dtable_get(&encoder->ctx, absidx); + + qnv = ent->nv; + nghttp3_rcbuf_incref(qnv.name); + nghttp3_rcbuf_incref(qnv.value); + + rv = nghttp3_qpack_context_dtable_add(&encoder->ctx, &qnv, + &encoder->dtable_map, ent->hash); + + nghttp3_rcbuf_decref(qnv.name); + nghttp3_rcbuf_decref(qnv.value); + + return rv; +} + +int nghttp3_qpack_encoder_dtable_literal_add(nghttp3_qpack_encoder *encoder, + const nghttp3_nv *nv, + int32_t token, uint32_t hash) { + nghttp3_qpack_nv qnv; + const nghttp3_mem *mem = encoder->ctx.mem; + int rv; + + rv = nghttp3_rcbuf_new2(&qnv.name, nv->name, nv->namelen, mem); + if (rv != 0) { + return rv; + } + + rv = nghttp3_rcbuf_new2(&qnv.value, nv->value, nv->valuelen, mem); + if (rv != 0) { + nghttp3_rcbuf_decref(qnv.name); + return rv; + } + + qnv.token = token; + qnv.flags = NGHTTP3_NV_FLAG_NONE; + + rv = nghttp3_qpack_context_dtable_add(&encoder->ctx, &qnv, + &encoder->dtable_map, hash); + + nghttp3_rcbuf_decref(qnv.value); + nghttp3_rcbuf_decref(qnv.name); + + return rv; +} + +nghttp3_qpack_entry * +nghttp3_qpack_context_dtable_get(nghttp3_qpack_context *ctx, uint64_t absidx) { + size_t relidx; + + assert(ctx->next_absidx > absidx); + assert(ctx->next_absidx - absidx - 1 < nghttp3_ringbuf_len(&ctx->dtable)); + + relidx = (size_t)(ctx->next_absidx - absidx - 1); + + return *(nghttp3_qpack_entry **)nghttp3_ringbuf_get(&ctx->dtable, relidx); +} + +nghttp3_qpack_entry * +nghttp3_qpack_context_dtable_top(nghttp3_qpack_context *ctx) { + assert(nghttp3_ringbuf_len(&ctx->dtable)); + return *(nghttp3_qpack_entry **)nghttp3_ringbuf_get(&ctx->dtable, 0); +} + +void nghttp3_qpack_entry_init(nghttp3_qpack_entry *ent, nghttp3_qpack_nv *qnv, + size_t sum, uint64_t absidx, uint32_t hash) { + ent->nv = *qnv; + ent->map_next = NULL; + ent->sum = sum; + ent->absidx = absidx; + ent->hash = hash; + + nghttp3_rcbuf_incref(ent->nv.name); + nghttp3_rcbuf_incref(ent->nv.value); +} + +void nghttp3_qpack_entry_free(nghttp3_qpack_entry *ent) { + nghttp3_rcbuf_decref(ent->nv.value); + nghttp3_rcbuf_decref(ent->nv.name); +} + +int nghttp3_qpack_encoder_block_stream(nghttp3_qpack_encoder *encoder, + nghttp3_qpack_stream *stream) { + nghttp3_blocked_streams_key bsk = { + nghttp3_struct_of(nghttp3_pq_top(&stream->max_cnts), + nghttp3_qpack_header_block_ref, max_cnts_pe) + ->max_cnt, + (uint64_t)stream->stream_id}; + + return nghttp3_ksl_insert(&encoder->blocked_streams, NULL, &bsk, stream); +} + +void nghttp3_qpack_encoder_unblock_stream(nghttp3_qpack_encoder *encoder, + nghttp3_qpack_stream *stream) { + nghttp3_blocked_streams_key bsk = { + nghttp3_struct_of(nghttp3_pq_top(&stream->max_cnts), + nghttp3_qpack_header_block_ref, max_cnts_pe) + ->max_cnt, + (uint64_t)stream->stream_id}; + nghttp3_ksl_it it; + + /* This is purely debugging purpose only */ + it = nghttp3_ksl_lower_bound(&encoder->blocked_streams, &bsk); + + assert(!nghttp3_ksl_it_end(&it)); + assert(nghttp3_ksl_it_get(&it) == stream); + + nghttp3_ksl_remove_hint(&encoder->blocked_streams, NULL, &it, &bsk); +} + +void nghttp3_qpack_encoder_unblock(nghttp3_qpack_encoder *encoder, + uint64_t max_cnt) { + nghttp3_blocked_streams_key bsk = {max_cnt, 0}; + nghttp3_ksl_it it; + + it = nghttp3_ksl_lower_bound(&encoder->blocked_streams, &bsk); + + for (; !nghttp3_ksl_it_end(&it);) { + bsk = *(nghttp3_blocked_streams_key *)nghttp3_ksl_it_key(&it); + nghttp3_ksl_remove_hint(&encoder->blocked_streams, &it, &it, &bsk); + } +} + +int nghttp3_qpack_encoder_ack_header(nghttp3_qpack_encoder *encoder, + int64_t stream_id) { + nghttp3_qpack_stream *stream = + nghttp3_qpack_encoder_find_stream(encoder, stream_id); + const nghttp3_mem *mem = encoder->ctx.mem; + nghttp3_qpack_header_block_ref *ref; + + if (stream == NULL) { + return NGHTTP3_ERR_QPACK_DECODER_STREAM_ERROR; + } + + assert(nghttp3_ringbuf_len(&stream->refs)); + + ref = + *(nghttp3_qpack_header_block_ref **)nghttp3_ringbuf_get(&stream->refs, 0); + + DEBUGF("qpack::encoder: Header acknowledgement stream=%ld ricnt=%" PRIu64 + " krcnt=%" PRIu64 "\n", + stream_id, ref->max_cnt, encoder->krcnt); + + if (encoder->krcnt < ref->max_cnt) { + encoder->krcnt = ref->max_cnt; + + nghttp3_qpack_encoder_unblock(encoder, ref->max_cnt); + } + + nghttp3_qpack_stream_pop_ref(stream); + + assert(ref->min_cnts_pe.index != NGHTTP3_PQ_BAD_INDEX); + + nghttp3_pq_remove(&encoder->min_cnts, &ref->min_cnts_pe); + + nghttp3_qpack_header_block_ref_del(ref, mem); + + if (nghttp3_ringbuf_len(&stream->refs)) { + return 0; + } + + qpack_encoder_remove_stream(encoder, stream); + + nghttp3_qpack_stream_del(stream, mem); + + return 0; +} + +int nghttp3_qpack_encoder_add_icnt(nghttp3_qpack_encoder *encoder, uint64_t n) { + if (n == 0 || encoder->ctx.next_absidx - encoder->krcnt < n) { + return NGHTTP3_ERR_QPACK_DECODER_STREAM_ERROR; + } + encoder->krcnt += n; + + nghttp3_qpack_encoder_unblock(encoder, encoder->krcnt); + + return 0; +} + +void nghttp3_qpack_encoder_ack_everything(nghttp3_qpack_encoder *encoder) { + encoder->krcnt = encoder->ctx.next_absidx; + + nghttp3_ksl_clear(&encoder->blocked_streams); + nghttp3_pq_clear(&encoder->min_cnts); + nghttp3_map_each(&encoder->streams, map_stream_free, + (void *)encoder->ctx.mem); + nghttp3_map_clear(&encoder->streams); +} + +void nghttp3_qpack_encoder_cancel_stream(nghttp3_qpack_encoder *encoder, + int64_t stream_id) { + nghttp3_qpack_stream *stream = + nghttp3_qpack_encoder_find_stream(encoder, stream_id); + const nghttp3_mem *mem = encoder->ctx.mem; + + if (stream == NULL) { + return; + } + + if (nghttp3_qpack_encoder_stream_is_blocked(encoder, stream)) { + nghttp3_qpack_encoder_unblock_stream(encoder, stream); + } + + qpack_encoder_remove_stream(encoder, stream); + + nghttp3_qpack_stream_del(stream, mem); +} + +size_t +nghttp3_qpack_encoder_get_num_blocked_streams(nghttp3_qpack_encoder *encoder) { + return nghttp3_ksl_len(&encoder->blocked_streams); +} + +int nghttp3_qpack_encoder_write_field_section_prefix( + nghttp3_qpack_encoder *encoder, nghttp3_buf *pbuf, uint64_t ricnt, + uint64_t base) { + size_t max_ents = + encoder->ctx.hard_max_dtable_capacity / NGHTTP3_QPACK_ENTRY_OVERHEAD; + uint64_t encricnt = ricnt == 0 ? 0 : (ricnt % (2 * max_ents)) + 1; + int sign = base < ricnt; + uint64_t delta_base = sign ? ricnt - base - 1 : base - ricnt; + size_t len = nghttp3_qpack_put_varint_len(encricnt, 8) + + nghttp3_qpack_put_varint_len(delta_base, 7); + uint8_t *p; + int rv; + + DEBUGF("qpack::encode: ricnt=%" PRIu64 " base=%" PRIu64 " icnt=%" PRIu64 "\n", + ricnt, base, encoder->ctx.next_absidx); + + rv = reserve_buf(pbuf, len, encoder->ctx.mem); + if (rv != 0) { + return rv; + } + + p = pbuf->last; + + p = nghttp3_qpack_put_varint(p, encricnt, 8); + if (sign) { + *p = 0x80; + } else { + *p = 0; + } + p = nghttp3_qpack_put_varint(p, delta_base, 7); + + assert((size_t)(p - pbuf->last) == len); + + pbuf->last = p; + + return 0; +} + +/* + * qpack_read_varint reads |rstate->prefix| prefixed integer stored + * from |begin|. The |end| represents the 1 beyond the last of the + * valid contiguous memory region from |begin|. The decoded integer + * must be less than or equal to NGHTTP3_QPACK_INT_MAX. + * + * If the |rstate->left| is nonzero, it is used as an initial value, + * and this function assumes the |begin| starts with intermediate + * data. |rstate->shift| is used as initial integer shift. + * + * If an entire integer is decoded successfully, the |*fin| is set to + * nonzero. + * + * This function stores the decoded integer in |rstate->left| if it + * succeeds, including partial decoding (in this case, number of shift + * to make in the next call will be stored in |rstate->shift|) and + * returns number of bytes processed, or returns negative error code + * NGHTTP3_ERR_QPACK_FATAL, indicating decoding error. + */ +static nghttp3_ssize qpack_read_varint(int *fin, + nghttp3_qpack_read_state *rstate, + const uint8_t *begin, + const uint8_t *end) { + uint64_t k = (uint8_t)((1 << rstate->prefix) - 1); + uint64_t n = rstate->left; + uint64_t add; + const uint8_t *p = begin; + size_t shift = rstate->shift; + + rstate->shift = 0; + *fin = 0; + + if (n == 0) { + if (((*p) & k) != k) { + rstate->left = (*p) & k; + *fin = 1; + return 1; + } + + n = k; + + if (++p == end) { + rstate->left = n; + return (nghttp3_ssize)(p - begin); + } + } + + for (; p != end; ++p, shift += 7) { + add = (*p) & 0x7f; + + if (shift > 62) { + return NGHTTP3_ERR_QPACK_FATAL; + } + + if ((NGHTTP3_QPACK_INT_MAX >> shift) < add) { + return NGHTTP3_ERR_QPACK_FATAL; + } + + add <<= shift; + + if (NGHTTP3_QPACK_INT_MAX - add < n) { + return NGHTTP3_ERR_QPACK_FATAL; + } + + n += add; + + if (((*p) & (1 << 7)) == 0) { + break; + } + } + + rstate->shift = shift; + + if (p == end) { + rstate->left = n; + return (nghttp3_ssize)(p - begin); + } + + rstate->left = n; + *fin = 1; + return (nghttp3_ssize)(p + 1 - begin); +} + +nghttp3_ssize nghttp3_qpack_encoder_read_decoder(nghttp3_qpack_encoder *encoder, + const uint8_t *src, + size_t srclen) { + const uint8_t *p = src, *end; + int rv; + nghttp3_ssize nread; + int rfin; + + if (encoder->ctx.bad) { + return NGHTTP3_ERR_QPACK_FATAL; + } + + if (srclen == 0) { + return 0; + } + + encoder->uninterrupted_decoderlen += srclen; + if (encoder->uninterrupted_decoderlen > NGHTTP3_QPACK_MAX_DECODERLEN) { + return NGHTTP3_ERR_QPACK_DECODER_STREAM_ERROR; + } + + end = src + srclen; + + for (; p != end;) { + switch (encoder->state) { + case NGHTTP3_QPACK_DS_STATE_OPCODE: + switch ((*p) & 0xc0) { + case 0x80: + case 0xc0: + DEBUGF("qpack::encode: OPCODE_SECTION_ACK\n"); + encoder->opcode = NGHTTP3_QPACK_DS_OPCODE_SECTION_ACK; + encoder->rstate.prefix = 7; + + break; + case 0x40: + DEBUGF("qpack::encode: OPCODE_STREAM_CANCEL\n"); + encoder->opcode = NGHTTP3_QPACK_DS_OPCODE_STREAM_CANCEL; + encoder->rstate.prefix = 6; + + break; + default: + DEBUGF("qpack::encode: OPCODE_ICNT_INCREMENT\n"); + encoder->opcode = NGHTTP3_QPACK_DS_OPCODE_ICNT_INCREMENT; + encoder->rstate.prefix = 6; + } + encoder->state = NGHTTP3_QPACK_DS_STATE_READ_NUMBER; + /* fall through */ + case NGHTTP3_QPACK_DS_STATE_READ_NUMBER: + nread = qpack_read_varint(&rfin, &encoder->rstate, p, end); + if (nread < 0) { + assert(nread == NGHTTP3_ERR_QPACK_FATAL); + rv = NGHTTP3_ERR_QPACK_DECODER_STREAM_ERROR; + goto fail; + } + + p += nread; + + if (!rfin) { + return p - src; + } + + switch (encoder->opcode) { + case NGHTTP3_QPACK_DS_OPCODE_ICNT_INCREMENT: + rv = nghttp3_qpack_encoder_add_icnt(encoder, encoder->rstate.left); + if (rv != 0) { + goto fail; + } + break; + case NGHTTP3_QPACK_DS_OPCODE_SECTION_ACK: + rv = nghttp3_qpack_encoder_ack_header(encoder, + (int64_t)encoder->rstate.left); + if (rv != 0) { + goto fail; + } + break; + case NGHTTP3_QPACK_DS_OPCODE_STREAM_CANCEL: + nghttp3_qpack_encoder_cancel_stream(encoder, + (int64_t)encoder->rstate.left); + break; + default: + nghttp3_unreachable(); + } + + encoder->state = NGHTTP3_QPACK_DS_STATE_OPCODE; + nghttp3_qpack_read_state_reset(&encoder->rstate); + break; + default: + nghttp3_unreachable(); + } + } + + return p - src; + +fail: + encoder->ctx.bad = 1; + return rv; +} + +size_t nghttp3_qpack_put_varint_len(uint64_t n, size_t prefix) { + size_t k = (size_t)((1 << prefix) - 1); + size_t len = 0; + + if (n < k) { + return 1; + } + + n -= k; + ++len; + + for (; n >= 128; n >>= 7, ++len) + ; + + return len + 1; +} + +uint8_t *nghttp3_qpack_put_varint(uint8_t *buf, uint64_t n, size_t prefix) { + size_t k = (size_t)((1 << prefix) - 1); + + *buf = (uint8_t)(*buf & ~k); + + if (n < k) { + *buf = (uint8_t)(*buf | n); + return buf + 1; + } + + *buf = (uint8_t)(*buf | k); + ++buf; + + n -= k; + + for (; n >= 128; n >>= 7) { + *buf++ = (uint8_t)((1 << 7) | (n & 0x7f)); + } + + *buf++ = (uint8_t)n; + + return buf; +} + +void nghttp3_qpack_read_state_free(nghttp3_qpack_read_state *rstate) { + nghttp3_rcbuf_decref(rstate->value); + nghttp3_rcbuf_decref(rstate->name); +} + +void nghttp3_qpack_read_state_reset(nghttp3_qpack_read_state *rstate) { + rstate->name = NULL; + rstate->value = NULL; + nghttp3_buf_init(&rstate->namebuf); + nghttp3_buf_init(&rstate->valuebuf); + rstate->left = 0; + rstate->prefix = 0; + rstate->shift = 0; + rstate->absidx = 0; + rstate->never = 0; + rstate->dynamic = 0; + rstate->huffman_encoded = 0; +} + +int nghttp3_qpack_decoder_init(nghttp3_qpack_decoder *decoder, + size_t hard_max_dtable_capacity, + size_t max_blocked_streams, + const nghttp3_mem *mem) { + int rv; + + rv = qpack_context_init(&decoder->ctx, hard_max_dtable_capacity, + max_blocked_streams, mem); + if (rv != 0) { + return rv; + } + + decoder->state = NGHTTP3_QPACK_ES_STATE_OPCODE; + decoder->opcode = 0; + decoder->written_icnt = 0; + decoder->max_concurrent_streams = 0; + decoder->uninterrupted_encoderlen = 0; + + nghttp3_qpack_read_state_reset(&decoder->rstate); + nghttp3_buf_init(&decoder->dbuf); + + return 0; +} + +void nghttp3_qpack_decoder_free(nghttp3_qpack_decoder *decoder) { + nghttp3_buf_free(&decoder->dbuf, decoder->ctx.mem); + nghttp3_qpack_read_state_free(&decoder->rstate); + qpack_context_free(&decoder->ctx); +} + +/* + * qpack_read_huffman_string decodes huffman string in buffer [begin, + * end) and writes the decoded string to |dest|. This function + * assumes the buffer pointed by |dest| has enough space. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_QPACK_FATAL + * Could not decode huffman string. + */ +static nghttp3_ssize qpack_read_huffman_string(nghttp3_qpack_read_state *rstate, + nghttp3_buf *dest, + const uint8_t *begin, + const uint8_t *end) { + nghttp3_ssize nwrite; + size_t len = (size_t)(end - begin); + int fin = 0; + + if (len >= rstate->left) { + len = (size_t)rstate->left; + fin = 1; + } + + nwrite = nghttp3_qpack_huffman_decode(&rstate->huffman_ctx, dest->last, begin, + len, fin); + if (nwrite < 0) { + return nwrite; + } + + if (nghttp3_qpack_huffman_decode_failure_state(&rstate->huffman_ctx)) { + return NGHTTP3_ERR_QPACK_FATAL; + } + + dest->last += nwrite; + rstate->left -= len; + return (nghttp3_ssize)len; +} + +static nghttp3_ssize qpack_read_string(nghttp3_qpack_read_state *rstate, + nghttp3_buf *dest, const uint8_t *begin, + const uint8_t *end) { + size_t len = (size_t)(end - begin); + size_t n = (size_t)nghttp3_min_uint64((uint64_t)len, rstate->left); + + dest->last = nghttp3_cpymem(dest->last, begin, n); + + rstate->left -= n; + return (nghttp3_ssize)n; +} + +/* + * qpack_decoder_validate_index checks rstate->absidx is acceptable. + * + * It returns 0 if it succeeds, or one of the following negative error + * codes: + * + * NGHTTP3_ERR_QPACK_FATAL + * rstate->absidx is invalid. + */ +static int qpack_decoder_validate_index(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_read_state *rstate) { + if (rstate->dynamic) { + return rstate->absidx < decoder->ctx.next_absidx && + decoder->ctx.next_absidx - rstate->absidx - 1 < + nghttp3_ringbuf_len(&decoder->ctx.dtable) + ? 0 + : NGHTTP3_ERR_QPACK_FATAL; + } + return rstate->absidx < nghttp3_arraylen(stable) ? 0 + : NGHTTP3_ERR_QPACK_FATAL; +} + +static void qpack_read_state_check_huffman(nghttp3_qpack_read_state *rstate, + const uint8_t b) { + rstate->huffman_encoded = (b & (1 << rstate->prefix)) != 0; +} + +static void qpack_read_state_terminate_name(nghttp3_qpack_read_state *rstate) { + *rstate->namebuf.last = '\0'; + rstate->name->len = nghttp3_buf_len(&rstate->namebuf); +} + +static void qpack_read_state_terminate_value(nghttp3_qpack_read_state *rstate) { + *rstate->valuebuf.last = '\0'; + rstate->value->len = nghttp3_buf_len(&rstate->valuebuf); +} + +nghttp3_ssize nghttp3_qpack_decoder_read_encoder(nghttp3_qpack_decoder *decoder, + const uint8_t *src, + size_t srclen) { + const uint8_t *p = src, *end; + int rv; + int busy = 0; + const nghttp3_mem *mem = decoder->ctx.mem; + nghttp3_ssize nread; + int rfin; + + if (decoder->ctx.bad) { + return NGHTTP3_ERR_QPACK_FATAL; + } + + if (srclen == 0) { + return 0; + } + + decoder->uninterrupted_encoderlen += srclen; + if (decoder->uninterrupted_encoderlen > NGHTTP3_QPACK_MAX_ENCODERLEN) { + return NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR; + } + + end = src + srclen; + + for (; p != end || busy;) { + busy = 0; + switch (decoder->state) { + case NGHTTP3_QPACK_ES_STATE_OPCODE: + switch ((*p) & 0xe0) { + case 0x80: + case 0xa0: + case 0xc0: + case 0xe0: + DEBUGF("qpack::decode: OPCODE_INSERT_INDEXED\n"); + decoder->opcode = NGHTTP3_QPACK_ES_OPCODE_INSERT_INDEXED; + decoder->rstate.dynamic = !((*p) & 0x40); + decoder->rstate.prefix = 6; + decoder->state = NGHTTP3_QPACK_ES_STATE_READ_INDEX; + + break; + case 0x40: + case 0x60: + DEBUGF("qpack::decode: OPCODE_INSERT\n"); + decoder->opcode = NGHTTP3_QPACK_ES_OPCODE_INSERT; + decoder->rstate.dynamic = 0; + decoder->rstate.prefix = 5; + decoder->state = NGHTTP3_QPACK_ES_STATE_CHECK_NAME_HUFFMAN; + + break; + case 0x20: + DEBUGF("qpack::decode: OPCODE_SET_DTABLE_TABLE_CAP\n"); + decoder->opcode = NGHTTP3_QPACK_ES_OPCODE_SET_DTABLE_CAP; + decoder->rstate.prefix = 5; + decoder->state = NGHTTP3_QPACK_ES_STATE_READ_INDEX; + + break; + default: + DEBUGF("qpack::decode: OPCODE_DUPLICATE\n"); + decoder->opcode = NGHTTP3_QPACK_ES_OPCODE_DUPLICATE; + decoder->rstate.dynamic = 1; + decoder->rstate.prefix = 5; + decoder->state = NGHTTP3_QPACK_ES_STATE_READ_INDEX; + } + break; + case NGHTTP3_QPACK_ES_STATE_READ_INDEX: + nread = qpack_read_varint(&rfin, &decoder->rstate, p, end); + if (nread < 0) { + assert(NGHTTP3_ERR_QPACK_FATAL == nread); + rv = NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR; + goto fail; + } + + p += nread; + + if (!rfin) { + return p - src; + } + + if (decoder->opcode == NGHTTP3_QPACK_ES_OPCODE_SET_DTABLE_CAP) { + DEBUGF("qpack::decode: Set dtable capacity to %" PRIu64 "\n", + decoder->rstate.left); + rv = nghttp3_qpack_decoder_set_max_dtable_capacity( + decoder, (size_t)decoder->rstate.left); + if (rv != 0) { + rv = NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR; + goto fail; + } + + decoder->state = NGHTTP3_QPACK_ES_STATE_OPCODE; + nghttp3_qpack_read_state_reset(&decoder->rstate); + break; + } + + rv = nghttp3_qpack_decoder_rel2abs(decoder, &decoder->rstate); + if (rv < 0) { + goto fail; + } + + switch (decoder->opcode) { + case NGHTTP3_QPACK_ES_OPCODE_DUPLICATE: + rv = nghttp3_qpack_decoder_dtable_duplicate_add(decoder); + if (rv != 0) { + goto fail; + } + + decoder->state = NGHTTP3_QPACK_ES_STATE_OPCODE; + nghttp3_qpack_read_state_reset(&decoder->rstate); + + break; + case NGHTTP3_QPACK_ES_OPCODE_INSERT_INDEXED: + decoder->rstate.prefix = 7; + decoder->state = NGHTTP3_QPACK_ES_STATE_CHECK_VALUE_HUFFMAN; + + break; + default: + nghttp3_unreachable(); + } + + break; + case NGHTTP3_QPACK_ES_STATE_CHECK_NAME_HUFFMAN: + qpack_read_state_check_huffman(&decoder->rstate, *p); + decoder->state = NGHTTP3_QPACK_ES_STATE_READ_NAMELEN; + decoder->rstate.left = 0; + decoder->rstate.shift = 0; + /* Fall through */ + case NGHTTP3_QPACK_ES_STATE_READ_NAMELEN: + nread = qpack_read_varint(&rfin, &decoder->rstate, p, end); + if (nread < 0) { + assert(NGHTTP3_ERR_QPACK_FATAL == nread); + rv = NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR; + goto fail; + } + + p += nread; + + if (!rfin) { + return p - src; + } + + if (decoder->rstate.left > NGHTTP3_QPACK_MAX_NAMELEN) { + rv = NGHTTP3_ERR_QPACK_HEADER_TOO_LARGE; + goto fail; + } + + if (decoder->rstate.huffman_encoded) { + decoder->state = NGHTTP3_QPACK_ES_STATE_READ_NAME_HUFFMAN; + nghttp3_qpack_huffman_decode_context_init(&decoder->rstate.huffman_ctx); + rv = nghttp3_rcbuf_new(&decoder->rstate.name, + (size_t)decoder->rstate.left * 2 + 1, mem); + } else { + decoder->state = NGHTTP3_QPACK_ES_STATE_READ_NAME; + rv = nghttp3_rcbuf_new(&decoder->rstate.name, + (size_t)decoder->rstate.left + 1, mem); + } + if (rv != 0) { + goto fail; + } + + nghttp3_buf_wrap_init(&decoder->rstate.namebuf, + decoder->rstate.name->base, + decoder->rstate.name->len); + break; + case NGHTTP3_QPACK_ES_STATE_READ_NAME_HUFFMAN: + nread = qpack_read_huffman_string(&decoder->rstate, + &decoder->rstate.namebuf, p, end); + if (nread < 0) { + assert(NGHTTP3_ERR_QPACK_FATAL == nread); + rv = NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR; + goto fail; + } + + p += nread; + + if (decoder->rstate.left) { + return p - src; + } + + qpack_read_state_terminate_name(&decoder->rstate); + + decoder->state = NGHTTP3_QPACK_ES_STATE_CHECK_VALUE_HUFFMAN; + decoder->rstate.prefix = 7; + break; + case NGHTTP3_QPACK_ES_STATE_READ_NAME: + nread = + qpack_read_string(&decoder->rstate, &decoder->rstate.namebuf, p, end); + if (nread < 0) { + rv = (int)nread; + goto fail; + } + + p += nread; + + if (decoder->rstate.left) { + return p - src; + } + + qpack_read_state_terminate_name(&decoder->rstate); + + decoder->state = NGHTTP3_QPACK_ES_STATE_CHECK_VALUE_HUFFMAN; + decoder->rstate.prefix = 7; + break; + case NGHTTP3_QPACK_ES_STATE_CHECK_VALUE_HUFFMAN: + qpack_read_state_check_huffman(&decoder->rstate, *p); + decoder->state = NGHTTP3_QPACK_ES_STATE_READ_VALUELEN; + decoder->rstate.left = 0; + decoder->rstate.shift = 0; + /* Fall through */ + case NGHTTP3_QPACK_ES_STATE_READ_VALUELEN: + nread = qpack_read_varint(&rfin, &decoder->rstate, p, end); + if (nread < 0) { + assert(NGHTTP3_ERR_QPACK_FATAL == nread); + rv = NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR; + goto fail; + } + + p += nread; + + if (!rfin) { + return p - src; + } + + if (decoder->rstate.left > NGHTTP3_QPACK_MAX_VALUELEN) { + rv = NGHTTP3_ERR_QPACK_HEADER_TOO_LARGE; + goto fail; + } + + if (decoder->rstate.huffman_encoded) { + decoder->state = NGHTTP3_QPACK_ES_STATE_READ_VALUE_HUFFMAN; + nghttp3_qpack_huffman_decode_context_init(&decoder->rstate.huffman_ctx); + rv = nghttp3_rcbuf_new(&decoder->rstate.value, + (size_t)decoder->rstate.left * 2 + 1, mem); + } else { + decoder->state = NGHTTP3_QPACK_ES_STATE_READ_VALUE; + rv = nghttp3_rcbuf_new(&decoder->rstate.value, + (size_t)decoder->rstate.left + 1, mem); + } + if (rv != 0) { + goto fail; + } + + nghttp3_buf_wrap_init(&decoder->rstate.valuebuf, + decoder->rstate.value->base, + decoder->rstate.value->len); + + /* value might be 0 length */ + busy = 1; + break; + case NGHTTP3_QPACK_ES_STATE_READ_VALUE_HUFFMAN: + nread = qpack_read_huffman_string(&decoder->rstate, + &decoder->rstate.valuebuf, p, end); + if (nread < 0) { + assert(NGHTTP3_ERR_QPACK_FATAL == nread); + rv = NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR; + goto fail; + } + + p += nread; + + if (decoder->rstate.left) { + return p - src; + } + + qpack_read_state_terminate_value(&decoder->rstate); + + switch (decoder->opcode) { + case NGHTTP3_QPACK_ES_OPCODE_INSERT_INDEXED: + rv = nghttp3_qpack_decoder_dtable_indexed_add(decoder); + break; + case NGHTTP3_QPACK_ES_OPCODE_INSERT: + rv = nghttp3_qpack_decoder_dtable_literal_add(decoder); + break; + default: + nghttp3_unreachable(); + } + if (rv != 0) { + goto fail; + } + + decoder->state = NGHTTP3_QPACK_ES_STATE_OPCODE; + nghttp3_qpack_read_state_reset(&decoder->rstate); + break; + case NGHTTP3_QPACK_ES_STATE_READ_VALUE: + nread = + qpack_read_string(&decoder->rstate, &decoder->rstate.valuebuf, p, end); + if (nread < 0) { + rv = (int)nread; + goto fail; + } + + p += nread; + + if (decoder->rstate.left) { + return p - src; + } + + qpack_read_state_terminate_value(&decoder->rstate); + + switch (decoder->opcode) { + case NGHTTP3_QPACK_ES_OPCODE_INSERT_INDEXED: + rv = nghttp3_qpack_decoder_dtable_indexed_add(decoder); + break; + case NGHTTP3_QPACK_ES_OPCODE_INSERT: + rv = nghttp3_qpack_decoder_dtable_literal_add(decoder); + break; + default: + nghttp3_unreachable(); + } + if (rv != 0) { + goto fail; + } + + decoder->state = NGHTTP3_QPACK_ES_STATE_OPCODE; + nghttp3_qpack_read_state_reset(&decoder->rstate); + break; + } + } + + return p - src; + +fail: + decoder->ctx.bad = 1; + return rv; +} + +int nghttp3_qpack_decoder_set_max_dtable_capacity( + nghttp3_qpack_decoder *decoder, size_t max_dtable_capacity) { + nghttp3_qpack_entry *ent; + size_t i; + nghttp3_qpack_context *ctx = &decoder->ctx; + const nghttp3_mem *mem = ctx->mem; + + if (max_dtable_capacity > decoder->ctx.hard_max_dtable_capacity) { + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + ctx->max_dtable_capacity = max_dtable_capacity; + + while (ctx->dtable_size > max_dtable_capacity) { + i = nghttp3_ringbuf_len(&ctx->dtable); + assert(i); + ent = *(nghttp3_qpack_entry **)nghttp3_ringbuf_get(&ctx->dtable, i - 1); + + ctx->dtable_size -= table_space(ent->nv.name->len, ent->nv.value->len); + + nghttp3_ringbuf_pop_back(&ctx->dtable); + nghttp3_qpack_entry_free(ent); + nghttp3_mem_free(mem, ent); + } + + return 0; +} + +int nghttp3_qpack_decoder_dtable_indexed_add(nghttp3_qpack_decoder *decoder) { + DEBUGF("qpack::decode: Insert With Name Reference (%s) absidx=%" PRIu64 ": " + "value=%*s\n", + decoder->rstate.dynamic ? "dynamic" : "static", decoder->rstate.absidx, + (int)decoder->rstate.value->len, decoder->rstate.value->base); + + if (decoder->rstate.dynamic) { + return nghttp3_qpack_decoder_dtable_dynamic_add(decoder); + } + + return nghttp3_qpack_decoder_dtable_static_add(decoder); +} + +int nghttp3_qpack_decoder_dtable_static_add(nghttp3_qpack_decoder *decoder) { + nghttp3_qpack_nv qnv; + int rv; + const nghttp3_qpack_static_header *shd; + + shd = &stable[decoder->rstate.absidx]; + + if (table_space(shd->name.len, decoder->rstate.value->len) > + decoder->ctx.max_dtable_capacity) { + return NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR; + } + + qnv.name = (nghttp3_rcbuf *)&shd->name; + qnv.value = decoder->rstate.value; + qnv.token = shd->token; + qnv.flags = NGHTTP3_NV_FLAG_NONE; + + rv = nghttp3_qpack_context_dtable_add(&decoder->ctx, &qnv, NULL, 0); + + nghttp3_rcbuf_decref(qnv.value); + + return rv; +} + +int nghttp3_qpack_decoder_dtable_dynamic_add(nghttp3_qpack_decoder *decoder) { + nghttp3_qpack_nv qnv; + int rv; + nghttp3_qpack_entry *ent; + + ent = nghttp3_qpack_context_dtable_get(&decoder->ctx, decoder->rstate.absidx); + + if (table_space(ent->nv.name->len, decoder->rstate.value->len) > + decoder->ctx.max_dtable_capacity) { + return NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR; + } + + qnv.name = ent->nv.name; + qnv.value = decoder->rstate.value; + qnv.token = ent->nv.token; + qnv.flags = NGHTTP3_NV_FLAG_NONE; + + nghttp3_rcbuf_incref(qnv.name); + + rv = nghttp3_qpack_context_dtable_add(&decoder->ctx, &qnv, NULL, 0); + + nghttp3_rcbuf_decref(qnv.value); + nghttp3_rcbuf_decref(qnv.name); + + return rv; +} + +int nghttp3_qpack_decoder_dtable_duplicate_add(nghttp3_qpack_decoder *decoder) { + int rv; + nghttp3_qpack_entry *ent; + nghttp3_qpack_nv qnv; + + DEBUGF("qpack::decode: Insert duplicate absidx=%" PRIu64 "\n", + decoder->rstate.absidx); + + ent = nghttp3_qpack_context_dtable_get(&decoder->ctx, decoder->rstate.absidx); + + if (table_space(ent->nv.name->len, ent->nv.value->len) > + decoder->ctx.max_dtable_capacity) { + return NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR; + } + + qnv = ent->nv; + nghttp3_rcbuf_incref(qnv.name); + nghttp3_rcbuf_incref(qnv.value); + + rv = nghttp3_qpack_context_dtable_add(&decoder->ctx, &qnv, NULL, 0); + + nghttp3_rcbuf_decref(qnv.value); + nghttp3_rcbuf_decref(qnv.name); + + return rv; +} + +int nghttp3_qpack_decoder_dtable_literal_add(nghttp3_qpack_decoder *decoder) { + nghttp3_qpack_nv qnv; + int rv; + + DEBUGF("qpack::decode: Insert With Literal Name: name=%*s value=%*s\n", + (int)decoder->rstate.name->len, decoder->rstate.name->base, + (int)decoder->rstate.value->len, decoder->rstate.value->base); + + if (table_space(decoder->rstate.name->len, decoder->rstate.value->len) > + decoder->ctx.max_dtable_capacity) { + return NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR; + } + + qnv.name = decoder->rstate.name; + qnv.value = decoder->rstate.value; + qnv.token = qpack_lookup_token(qnv.name->base, qnv.name->len); + qnv.flags = NGHTTP3_NV_FLAG_NONE; + + rv = nghttp3_qpack_context_dtable_add(&decoder->ctx, &qnv, NULL, 0); + + nghttp3_rcbuf_decref(qnv.value); + nghttp3_rcbuf_decref(qnv.name); + + return rv; +} + +void nghttp3_qpack_decoder_set_max_concurrent_streams( + nghttp3_qpack_decoder *decoder, size_t max_concurrent_streams) { + decoder->max_concurrent_streams = + nghttp3_max_size(decoder->max_concurrent_streams, max_concurrent_streams); +} + +void nghttp3_qpack_stream_context_init(nghttp3_qpack_stream_context *sctx, + int64_t stream_id, + const nghttp3_mem *mem) { + nghttp3_qpack_read_state_reset(&sctx->rstate); + + sctx->mem = mem; + sctx->rstate.prefix = 8; + sctx->state = NGHTTP3_QPACK_RS_STATE_RICNT; + sctx->opcode = 0; + sctx->stream_id = stream_id; + sctx->ricnt = 0; + sctx->dbase_sign = 0; + sctx->base = 0; +} + +void nghttp3_qpack_stream_context_free(nghttp3_qpack_stream_context *sctx) { + nghttp3_qpack_read_state_free(&sctx->rstate); +} + +void nghttp3_qpack_stream_context_reset(nghttp3_qpack_stream_context *sctx) { + nghttp3_qpack_stream_context_init(sctx, sctx->stream_id, sctx->mem); +} + +uint64_t +nghttp3_qpack_stream_context_get_ricnt(nghttp3_qpack_stream_context *sctx) { + return sctx->ricnt; +} + +nghttp3_ssize +nghttp3_qpack_decoder_read_request(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx, + nghttp3_qpack_nv *nv, uint8_t *pflags, + const uint8_t *src, size_t srclen, int fin) { + const uint8_t *p = src, *end = src ? src + srclen : src; + int rv; + int busy = 0; + nghttp3_ssize nread; + int rfin; + const nghttp3_mem *mem = decoder->ctx.mem; + + if (decoder->ctx.bad) { + return NGHTTP3_ERR_QPACK_FATAL; + } + + *pflags = NGHTTP3_QPACK_DECODE_FLAG_NONE; + + for (; p != end || busy;) { + busy = 0; + switch (sctx->state) { + case NGHTTP3_QPACK_RS_STATE_RICNT: + nread = qpack_read_varint(&rfin, &sctx->rstate, p, end); + if (nread < 0) { + assert(NGHTTP3_ERR_QPACK_FATAL == nread); + rv = NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + goto fail; + } + + p += nread; + + if (!rfin) { + goto almost_ok; + } + + rv = nghttp3_qpack_decoder_reconstruct_ricnt(decoder, &sctx->ricnt, + sctx->rstate.left); + if (rv != 0) { + goto fail; + } + + sctx->state = NGHTTP3_QPACK_RS_STATE_DBASE_SIGN; + break; + case NGHTTP3_QPACK_RS_STATE_DBASE_SIGN: + if ((*p) & 0x80) { + sctx->dbase_sign = 1; + } + sctx->state = NGHTTP3_QPACK_RS_STATE_DBASE; + sctx->rstate.left = 0; + sctx->rstate.prefix = 7; + sctx->rstate.shift = 0; + /* Fall through */ + case NGHTTP3_QPACK_RS_STATE_DBASE: + nread = qpack_read_varint(&rfin, &sctx->rstate, p, end); + if (nread < 0) { + assert(NGHTTP3_ERR_QPACK_FATAL == nread); + rv = NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + goto fail; + } + + p += nread; + + if (!rfin) { + goto almost_ok; + } + + if (sctx->dbase_sign) { + if (sctx->ricnt <= sctx->rstate.left) { + rv = NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + goto fail; + } + sctx->base = sctx->ricnt - sctx->rstate.left - 1; + } else { + sctx->base = sctx->ricnt + sctx->rstate.left; + } + + DEBUGF("qpack::decode: ricnt=%" PRIu64 " base=%" PRIu64 " icnt=%" PRIu64 + "\n", + sctx->ricnt, sctx->base, decoder->ctx.next_absidx); + + if (sctx->ricnt > decoder->ctx.next_absidx) { + DEBUGF("qpack::decode: stream blocked\n"); + sctx->state = NGHTTP3_QPACK_RS_STATE_BLOCKED; + *pflags |= NGHTTP3_QPACK_DECODE_FLAG_BLOCKED; + return p - src; + } + + sctx->state = NGHTTP3_QPACK_RS_STATE_OPCODE; + sctx->rstate.left = 0; + sctx->rstate.shift = 0; + break; + case NGHTTP3_QPACK_RS_STATE_OPCODE: + assert(sctx->rstate.left == 0); + assert(sctx->rstate.shift == 0); + switch ((*p) & 0xf0) { + case 0x80: + case 0x90: + case 0xa0: + case 0xb0: + case 0xc0: + case 0xd0: + case 0xe0: + case 0xf0: + DEBUGF("qpack::decode: OPCODE_INDEXED\n"); + sctx->opcode = NGHTTP3_QPACK_RS_OPCODE_INDEXED; + sctx->rstate.dynamic = !((*p) & 0x40); + sctx->rstate.prefix = 6; + sctx->state = NGHTTP3_QPACK_RS_STATE_READ_INDEX; + + break; + case 0x40: + case 0x50: + case 0x60: + case 0x70: + DEBUGF("qpack::decode: OPCODE_INDEXED_NAME\n"); + sctx->opcode = NGHTTP3_QPACK_RS_OPCODE_INDEXED_NAME; + sctx->rstate.never = (*p) & 0x20; + sctx->rstate.dynamic = !((*p) & 0x10); + sctx->rstate.prefix = 4; + sctx->state = NGHTTP3_QPACK_RS_STATE_READ_INDEX; + + break; + case 0x20: + case 0x30: + DEBUGF("qpack::decode: OPCODE_LITERAL\n"); + sctx->opcode = NGHTTP3_QPACK_RS_OPCODE_LITERAL; + sctx->rstate.never = (*p) & 0x10; + sctx->rstate.dynamic = 0; + sctx->rstate.prefix = 3; + sctx->state = NGHTTP3_QPACK_RS_STATE_CHECK_NAME_HUFFMAN; + + break; + case 0x10: + DEBUGF("qpack::decode: OPCODE_INDEXED_PB\n"); + sctx->opcode = NGHTTP3_QPACK_RS_OPCODE_INDEXED_PB; + sctx->rstate.dynamic = 1; + sctx->rstate.prefix = 4; + sctx->state = NGHTTP3_QPACK_RS_STATE_READ_INDEX; + + break; + default: + DEBUGF("qpack::decode: OPCODE_INDEXED_NAME_PB\n"); + sctx->opcode = NGHTTP3_QPACK_RS_OPCODE_INDEXED_NAME_PB; + sctx->rstate.never = (*p) & 0x08; + sctx->rstate.dynamic = 1; + sctx->rstate.prefix = 3; + sctx->state = NGHTTP3_QPACK_RS_STATE_READ_INDEX; + } + break; + case NGHTTP3_QPACK_RS_STATE_READ_INDEX: + nread = qpack_read_varint(&rfin, &sctx->rstate, p, end); + if (nread < 0) { + assert(NGHTTP3_ERR_QPACK_FATAL == nread); + rv = NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + goto fail; + } + + p += nread; + + if (!rfin) { + goto almost_ok; + } + + switch (sctx->opcode) { + case NGHTTP3_QPACK_RS_OPCODE_INDEXED: + rv = nghttp3_qpack_decoder_brel2abs(decoder, sctx); + if (rv != 0) { + goto fail; + } + nghttp3_qpack_decoder_emit_indexed(decoder, sctx, nv); + *pflags |= NGHTTP3_QPACK_DECODE_FLAG_EMIT; + + sctx->state = NGHTTP3_QPACK_RS_STATE_OPCODE; + nghttp3_qpack_read_state_reset(&sctx->rstate); + + return p - src; + case NGHTTP3_QPACK_RS_OPCODE_INDEXED_PB: + rv = nghttp3_qpack_decoder_pbrel2abs(decoder, sctx); + if (rv != 0) { + goto fail; + } + nghttp3_qpack_decoder_emit_indexed(decoder, sctx, nv); + *pflags |= NGHTTP3_QPACK_DECODE_FLAG_EMIT; + + sctx->state = NGHTTP3_QPACK_RS_STATE_OPCODE; + nghttp3_qpack_read_state_reset(&sctx->rstate); + + return p - src; + case NGHTTP3_QPACK_RS_OPCODE_INDEXED_NAME: + rv = nghttp3_qpack_decoder_brel2abs(decoder, sctx); + if (rv != 0) { + goto fail; + } + sctx->rstate.prefix = 7; + sctx->state = NGHTTP3_QPACK_RS_STATE_CHECK_VALUE_HUFFMAN; + break; + case NGHTTP3_QPACK_RS_OPCODE_INDEXED_NAME_PB: + rv = nghttp3_qpack_decoder_pbrel2abs(decoder, sctx); + if (rv != 0) { + goto fail; + } + sctx->rstate.prefix = 7; + sctx->state = NGHTTP3_QPACK_RS_STATE_CHECK_VALUE_HUFFMAN; + break; + default: + nghttp3_unreachable(); + } + break; + case NGHTTP3_QPACK_RS_STATE_CHECK_NAME_HUFFMAN: + qpack_read_state_check_huffman(&sctx->rstate, *p); + sctx->state = NGHTTP3_QPACK_RS_STATE_READ_NAMELEN; + sctx->rstate.left = 0; + sctx->rstate.shift = 0; + /* Fall through */ + case NGHTTP3_QPACK_RS_STATE_READ_NAMELEN: + nread = qpack_read_varint(&rfin, &sctx->rstate, p, end); + if (nread < 0) { + assert(NGHTTP3_ERR_QPACK_FATAL == nread); + rv = NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + goto fail; + } + + p += nread; + + if (!rfin) { + goto almost_ok; + } + + if (sctx->rstate.left > NGHTTP3_QPACK_MAX_NAMELEN) { + rv = NGHTTP3_ERR_QPACK_HEADER_TOO_LARGE; + goto fail; + } + + if (sctx->rstate.huffman_encoded) { + sctx->state = NGHTTP3_QPACK_RS_STATE_READ_NAME_HUFFMAN; + nghttp3_qpack_huffman_decode_context_init(&sctx->rstate.huffman_ctx); + rv = nghttp3_rcbuf_new(&sctx->rstate.name, + (size_t)sctx->rstate.left * 2 + 1, mem); + } else { + sctx->state = NGHTTP3_QPACK_RS_STATE_READ_NAME; + rv = nghttp3_rcbuf_new(&sctx->rstate.name, + (size_t)sctx->rstate.left + 1, mem); + } + if (rv != 0) { + goto fail; + } + + nghttp3_buf_wrap_init(&sctx->rstate.namebuf, sctx->rstate.name->base, + sctx->rstate.name->len); + break; + case NGHTTP3_QPACK_RS_STATE_READ_NAME_HUFFMAN: + nread = + qpack_read_huffman_string(&sctx->rstate, &sctx->rstate.namebuf, p, end); + if (nread < 0) { + assert(NGHTTP3_ERR_QPACK_FATAL == nread); + rv = NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + goto fail; + } + + p += nread; + + if (sctx->rstate.left) { + goto almost_ok; + } + + qpack_read_state_terminate_name(&sctx->rstate); + + sctx->state = NGHTTP3_QPACK_RS_STATE_CHECK_VALUE_HUFFMAN; + sctx->rstate.prefix = 7; + break; + case NGHTTP3_QPACK_RS_STATE_READ_NAME: + nread = qpack_read_string(&sctx->rstate, &sctx->rstate.namebuf, p, end); + if (nread < 0) { + rv = (int)nread; + goto fail; + } + + p += nread; + + if (sctx->rstate.left) { + goto almost_ok; + } + + qpack_read_state_terminate_name(&sctx->rstate); + + sctx->state = NGHTTP3_QPACK_RS_STATE_CHECK_VALUE_HUFFMAN; + sctx->rstate.prefix = 7; + break; + case NGHTTP3_QPACK_RS_STATE_CHECK_VALUE_HUFFMAN: + qpack_read_state_check_huffman(&sctx->rstate, *p); + sctx->state = NGHTTP3_QPACK_RS_STATE_READ_VALUELEN; + sctx->rstate.left = 0; + sctx->rstate.shift = 0; + /* Fall through */ + case NGHTTP3_QPACK_RS_STATE_READ_VALUELEN: + nread = qpack_read_varint(&rfin, &sctx->rstate, p, end); + if (nread < 0) { + assert(NGHTTP3_ERR_QPACK_FATAL == nread); + rv = NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + goto fail; + } + + p += nread; + + if (!rfin) { + goto almost_ok; + } + + if (sctx->rstate.left > NGHTTP3_QPACK_MAX_VALUELEN) { + rv = NGHTTP3_ERR_QPACK_HEADER_TOO_LARGE; + goto fail; + } + + if (sctx->rstate.huffman_encoded) { + sctx->state = NGHTTP3_QPACK_RS_STATE_READ_VALUE_HUFFMAN; + nghttp3_qpack_huffman_decode_context_init(&sctx->rstate.huffman_ctx); + rv = nghttp3_rcbuf_new(&sctx->rstate.value, + (size_t)sctx->rstate.left * 2 + 1, mem); + } else { + sctx->state = NGHTTP3_QPACK_RS_STATE_READ_VALUE; + rv = nghttp3_rcbuf_new(&sctx->rstate.value, + (size_t)sctx->rstate.left + 1, mem); + } + if (rv != 0) { + goto fail; + } + + nghttp3_buf_wrap_init(&sctx->rstate.valuebuf, sctx->rstate.value->base, + sctx->rstate.value->len); + + /* value might be 0 length */ + busy = 1; + break; + case NGHTTP3_QPACK_RS_STATE_READ_VALUE_HUFFMAN: + nread = qpack_read_huffman_string(&sctx->rstate, &sctx->rstate.valuebuf, + p, end); + if (nread < 0) { + assert(NGHTTP3_ERR_QPACK_FATAL == nread); + rv = NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + goto fail; + } + + p += nread; + + if (sctx->rstate.left) { + goto almost_ok; + } + + qpack_read_state_terminate_value(&sctx->rstate); + + switch (sctx->opcode) { + case NGHTTP3_QPACK_RS_OPCODE_INDEXED_NAME: + case NGHTTP3_QPACK_RS_OPCODE_INDEXED_NAME_PB: + rv = nghttp3_qpack_decoder_emit_indexed_name(decoder, sctx, nv); + if (rv != 0) { + goto fail; + } + + break; + case NGHTTP3_QPACK_RS_OPCODE_LITERAL: + nghttp3_qpack_decoder_emit_literal(decoder, sctx, nv); + break; + default: + nghttp3_unreachable(); + } + + *pflags |= NGHTTP3_QPACK_DECODE_FLAG_EMIT; + + sctx->state = NGHTTP3_QPACK_RS_STATE_OPCODE; + nghttp3_qpack_read_state_reset(&sctx->rstate); + + return p - src; + case NGHTTP3_QPACK_RS_STATE_READ_VALUE: + nread = qpack_read_string(&sctx->rstate, &sctx->rstate.valuebuf, p, end); + if (nread < 0) { + rv = (int)nread; + goto fail; + } + + p += nread; + + if (sctx->rstate.left) { + goto almost_ok; + } + + qpack_read_state_terminate_value(&sctx->rstate); + + switch (sctx->opcode) { + case NGHTTP3_QPACK_RS_OPCODE_INDEXED_NAME: + case NGHTTP3_QPACK_RS_OPCODE_INDEXED_NAME_PB: + rv = nghttp3_qpack_decoder_emit_indexed_name(decoder, sctx, nv); + if (rv != 0) { + goto fail; + } + + break; + case NGHTTP3_QPACK_RS_OPCODE_LITERAL: + nghttp3_qpack_decoder_emit_literal(decoder, sctx, nv); + break; + default: + nghttp3_unreachable(); + } + + *pflags |= NGHTTP3_QPACK_DECODE_FLAG_EMIT; + + sctx->state = NGHTTP3_QPACK_RS_STATE_OPCODE; + nghttp3_qpack_read_state_reset(&sctx->rstate); + + return p - src; + case NGHTTP3_QPACK_RS_STATE_BLOCKED: + if (sctx->ricnt > decoder->ctx.next_absidx) { + DEBUGF("qpack::decode: stream still blocked\n"); + *pflags |= NGHTTP3_QPACK_DECODE_FLAG_BLOCKED; + return p - src; + } + sctx->state = NGHTTP3_QPACK_RS_STATE_OPCODE; + nghttp3_qpack_read_state_reset(&sctx->rstate); + break; + } + } + +almost_ok: + if (fin) { + if (sctx->state != NGHTTP3_QPACK_RS_STATE_OPCODE) { + rv = NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + goto fail; + } + + *pflags |= NGHTTP3_QPACK_DECODE_FLAG_FINAL; + + if (sctx->ricnt) { + rv = nghttp3_qpack_decoder_write_section_ack(decoder, sctx); + if (rv != 0) { + goto fail; + } + } + + decoder->uninterrupted_encoderlen = 0; + } + + return p - src; + +fail: + decoder->ctx.bad = 1; + return rv; +} + +static int qpack_decoder_dbuf_overflow(nghttp3_qpack_decoder *decoder) { + size_t limit = nghttp3_max_size(decoder->max_concurrent_streams, 100); + /* 10 = nghttp3_qpack_put_varint_len((1ULL << 62) - 1, 2)) */ + return nghttp3_buf_len(&decoder->dbuf) > limit * 2 * 10; +} + +int nghttp3_qpack_decoder_write_section_ack( + nghttp3_qpack_decoder *decoder, const nghttp3_qpack_stream_context *sctx) { + nghttp3_buf *dbuf = &decoder->dbuf; + uint8_t *p; + int rv; + + if (qpack_decoder_dbuf_overflow(decoder)) { + return NGHTTP3_ERR_QPACK_FATAL; + } + + rv = reserve_buf(dbuf, + nghttp3_qpack_put_varint_len((uint64_t)sctx->stream_id, 7), + decoder->ctx.mem); + if (rv != 0) { + return rv; + } + + p = dbuf->last; + *p = 0x80; + dbuf->last = nghttp3_qpack_put_varint(p, (uint64_t)sctx->stream_id, 7); + + if (decoder->written_icnt < sctx->ricnt) { + decoder->written_icnt = sctx->ricnt; + } + + return 0; +} + +size_t +nghttp3_qpack_decoder_get_decoder_streamlen(nghttp3_qpack_decoder *decoder) { + uint64_t n; + size_t len = 0; + + if (decoder->written_icnt < decoder->ctx.next_absidx) { + n = decoder->ctx.next_absidx - decoder->written_icnt; + len = nghttp3_qpack_put_varint_len(n, 6); + } + + return nghttp3_buf_len(&decoder->dbuf) + len; +} + +void nghttp3_qpack_decoder_write_decoder(nghttp3_qpack_decoder *decoder, + nghttp3_buf *dbuf) { + uint8_t *p; + uint64_t n = 0; + size_t len = 0; + (void)len; + + if (decoder->written_icnt < decoder->ctx.next_absidx) { + n = decoder->ctx.next_absidx - decoder->written_icnt; + len = nghttp3_qpack_put_varint_len(n, 6); + } + + assert(nghttp3_buf_left(dbuf) >= nghttp3_buf_len(&decoder->dbuf) + len); + + if (nghttp3_buf_len(&decoder->dbuf)) { + dbuf->last = nghttp3_cpymem(dbuf->last, decoder->dbuf.pos, + nghttp3_buf_len(&decoder->dbuf)); + } + + if (n) { + p = dbuf->last; + *p = 0; + dbuf->last = nghttp3_qpack_put_varint(p, n, 6); + + decoder->written_icnt = decoder->ctx.next_absidx; + } + + nghttp3_buf_reset(&decoder->dbuf); +} + +int nghttp3_qpack_decoder_cancel_stream(nghttp3_qpack_decoder *decoder, + int64_t stream_id) { + uint8_t *p; + int rv; + + if (qpack_decoder_dbuf_overflow(decoder)) { + return NGHTTP3_ERR_QPACK_FATAL; + } + + rv = reserve_buf(&decoder->dbuf, + nghttp3_qpack_put_varint_len((uint64_t)stream_id, 6), + decoder->ctx.mem); + if (rv != 0) { + return rv; + } + + p = decoder->dbuf.last; + *p = 0x40; + decoder->dbuf.last = nghttp3_qpack_put_varint(p, (uint64_t)stream_id, 6); + + return 0; +} + +int nghttp3_qpack_decoder_reconstruct_ricnt(nghttp3_qpack_decoder *decoder, + uint64_t *dest, uint64_t encricnt) { + uint64_t max_ents, full, max, max_wrapped, ricnt; + + if (encricnt == 0) { + *dest = 0; + return 0; + } + + max_ents = + decoder->ctx.hard_max_dtable_capacity / NGHTTP3_QPACK_ENTRY_OVERHEAD; + full = 2 * max_ents; + + if (encricnt > full) { + return NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + } + + max = decoder->ctx.next_absidx + max_ents; + max_wrapped = max / full * full; + ricnt = max_wrapped + encricnt - 1; + + if (ricnt > max) { + if (ricnt <= full) { + return NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + } + ricnt -= full; + } + + if (ricnt == 0) { + return NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + } + + *dest = ricnt; + + return 0; +} + +int nghttp3_qpack_decoder_rel2abs(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_read_state *rstate) { + DEBUGF("qpack::decode: dynamic=%d relidx=%" PRIu64 " icnt=%" PRIu64 "\n", + rstate->dynamic, rstate->left, decoder->ctx.next_absidx); + + if (rstate->dynamic) { + if (decoder->ctx.next_absidx < rstate->left + 1) { + return NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR; + } + rstate->absidx = decoder->ctx.next_absidx - rstate->left - 1; + } else { + rstate->absidx = rstate->left; + } + if (qpack_decoder_validate_index(decoder, rstate) != 0) { + return NGHTTP3_ERR_QPACK_ENCODER_STREAM_ERROR; + } + return 0; +} + +int nghttp3_qpack_decoder_brel2abs(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx) { + nghttp3_qpack_read_state *rstate = &sctx->rstate; + + DEBUGF("qpack::decode: dynamic=%d relidx=%" PRIu64 " base=%" PRIu64 + " icnt=%" PRIu64 "\n", + rstate->dynamic, rstate->left, sctx->base, decoder->ctx.next_absidx); + + if (rstate->dynamic) { + if (sctx->base < rstate->left + 1) { + return NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + } + rstate->absidx = sctx->base - rstate->left - 1; + + if (rstate->absidx >= sctx->ricnt) { + return NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + } + } else { + rstate->absidx = rstate->left; + } + + if (qpack_decoder_validate_index(decoder, rstate) != 0) { + return NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + } + return 0; +} + +int nghttp3_qpack_decoder_pbrel2abs(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx) { + nghttp3_qpack_read_state *rstate = &sctx->rstate; + + DEBUGF("qpack::decode: pbidx=%" PRIu64 " base=%" PRIu64 " icnt=%" PRIu64 "\n", + rstate->left, sctx->base, decoder->ctx.next_absidx); + + assert(rstate->dynamic); + + rstate->absidx = rstate->left + sctx->base; + + if (rstate->absidx >= sctx->ricnt) { + return NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + } + + if (qpack_decoder_validate_index(decoder, rstate) != 0) { + return NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + } + return 0; +} + +static void +qpack_decoder_emit_static_indexed(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx, + nghttp3_qpack_nv *nv) { + const nghttp3_qpack_static_header *shd = &stable[sctx->rstate.absidx]; + (void)decoder; + + nv->name = (nghttp3_rcbuf *)&shd->name; + nv->value = (nghttp3_rcbuf *)&shd->value; + nv->token = shd->token; + nv->flags = NGHTTP3_NV_FLAG_NONE; +} + +static void +qpack_decoder_emit_dynamic_indexed(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx, + nghttp3_qpack_nv *nv) { + nghttp3_qpack_entry *ent = + nghttp3_qpack_context_dtable_get(&decoder->ctx, sctx->rstate.absidx); + + *nv = ent->nv; + + nghttp3_rcbuf_incref(nv->name); + nghttp3_rcbuf_incref(nv->value); +} + +void nghttp3_qpack_decoder_emit_indexed(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx, + nghttp3_qpack_nv *nv) { + DEBUGF("qpack::decode: Indexed (%s) absidx=%" PRIu64 "\n", + sctx->rstate.dynamic ? "dynamic" : "static", sctx->rstate.absidx); + + if (sctx->rstate.dynamic) { + qpack_decoder_emit_dynamic_indexed(decoder, sctx, nv); + } else { + qpack_decoder_emit_static_indexed(decoder, sctx, nv); + } +} + +static void +qpack_decoder_emit_static_indexed_name(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx, + nghttp3_qpack_nv *nv) { + const nghttp3_qpack_static_header *shd = &stable[sctx->rstate.absidx]; + (void)decoder; + + nv->name = (nghttp3_rcbuf *)&shd->name; + nv->value = sctx->rstate.value; + nv->token = shd->token; + nv->flags = + sctx->rstate.never ? NGHTTP3_NV_FLAG_NEVER_INDEX : NGHTTP3_NV_FLAG_NONE; + + sctx->rstate.value = NULL; +} + +static int +qpack_decoder_emit_dynamic_indexed_name(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx, + nghttp3_qpack_nv *nv) { + nghttp3_qpack_entry *ent; + + /* A broken encoder might change dtable capacity while processing + request stream instruction. Check the absidx again. */ + if (qpack_decoder_validate_index(decoder, &sctx->rstate) != 0) { + return NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED; + } + + ent = nghttp3_qpack_context_dtable_get(&decoder->ctx, sctx->rstate.absidx); + + nv->name = ent->nv.name; + nv->value = sctx->rstate.value; + nv->token = ent->nv.token; + nv->flags = + sctx->rstate.never ? NGHTTP3_NV_FLAG_NEVER_INDEX : NGHTTP3_NV_FLAG_NONE; + + nghttp3_rcbuf_incref(nv->name); + + sctx->rstate.value = NULL; + + return 0; +} + +int nghttp3_qpack_decoder_emit_indexed_name(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx, + nghttp3_qpack_nv *nv) { + (void)decoder; + + DEBUGF("qpack::decode: Indexed name (%s) absidx=%" PRIu64 " value=%*s\n", + sctx->rstate.dynamic ? "dynamic" : "static", sctx->rstate.absidx, + (int)sctx->rstate.value->len, sctx->rstate.value->base); + + if (sctx->rstate.dynamic) { + return qpack_decoder_emit_dynamic_indexed_name(decoder, sctx, nv); + } + + qpack_decoder_emit_static_indexed_name(decoder, sctx, nv); + + return 0; +} + +void nghttp3_qpack_decoder_emit_literal(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx, + nghttp3_qpack_nv *nv) { + (void)decoder; + + DEBUGF("qpack::decode: Emit literal name=%*s value=%*s\n", + (int)sctx->rstate.name->len, sctx->rstate.name->base, + (int)sctx->rstate.value->len, sctx->rstate.value->base); + + nv->name = sctx->rstate.name; + nv->value = sctx->rstate.value; + nv->token = qpack_lookup_token(nv->name->base, nv->name->len); + nv->flags = + sctx->rstate.never ? NGHTTP3_NV_FLAG_NEVER_INDEX : NGHTTP3_NV_FLAG_NONE; + + sctx->rstate.name = NULL; + sctx->rstate.value = NULL; +} + +int nghttp3_qpack_encoder_new(nghttp3_qpack_encoder **pencoder, + size_t hard_max_dtable_capacity, + const nghttp3_mem *mem) { + int rv; + nghttp3_qpack_encoder *p; + + p = nghttp3_mem_malloc(mem, sizeof(nghttp3_qpack_encoder)); + if (p == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + rv = nghttp3_qpack_encoder_init(p, hard_max_dtable_capacity, mem); + if (rv != 0) { + return rv; + } + + *pencoder = p; + + return 0; +} + +void nghttp3_qpack_encoder_del(nghttp3_qpack_encoder *encoder) { + const nghttp3_mem *mem; + + if (encoder == NULL) { + return; + } + + mem = encoder->ctx.mem; + + nghttp3_qpack_encoder_free(encoder); + nghttp3_mem_free(mem, encoder); +} + +int nghttp3_qpack_stream_context_new(nghttp3_qpack_stream_context **psctx, + int64_t stream_id, + const nghttp3_mem *mem) { + nghttp3_qpack_stream_context *p; + + p = nghttp3_mem_malloc(mem, sizeof(nghttp3_qpack_stream_context)); + if (p == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + nghttp3_qpack_stream_context_init(p, stream_id, mem); + + *psctx = p; + + return 0; +} + +void nghttp3_qpack_stream_context_del(nghttp3_qpack_stream_context *sctx) { + const nghttp3_mem *mem; + + if (sctx == NULL) { + return; + } + + mem = sctx->mem; + + nghttp3_qpack_stream_context_free(sctx); + nghttp3_mem_free(mem, sctx); +} + +int nghttp3_qpack_decoder_new(nghttp3_qpack_decoder **pdecoder, + size_t hard_max_dtable_capacity, + size_t max_blocked_streams, + const nghttp3_mem *mem) { + int rv; + nghttp3_qpack_decoder *p; + + p = nghttp3_mem_malloc(mem, sizeof(nghttp3_qpack_decoder)); + if (p == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + rv = nghttp3_qpack_decoder_init(p, hard_max_dtable_capacity, + max_blocked_streams, mem); + if (rv != 0) { + return rv; + } + + *pdecoder = p; + + return 0; +} + +void nghttp3_qpack_decoder_del(nghttp3_qpack_decoder *decoder) { + const nghttp3_mem *mem; + + if (decoder == NULL) { + return; + } + + mem = decoder->ctx.mem; + + nghttp3_qpack_decoder_free(decoder); + nghttp3_mem_free(mem, decoder); +} + +uint64_t nghttp3_qpack_decoder_get_icnt(const nghttp3_qpack_decoder *decoder) { + return decoder->ctx.next_absidx; +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_qpack.h b/contrib/libs/nghttp3/lib/nghttp3_qpack.h new file mode 100644 index 0000000000..d2bb8a3581 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_qpack.h @@ -0,0 +1,1010 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2013 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_QPACK_H +#define NGHTTP3_QPACK_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_rcbuf.h" +#include "nghttp3_map.h" +#include "nghttp3_pq.h" +#include "nghttp3_ringbuf.h" +#include "nghttp3_buf.h" +#include "nghttp3_ksl.h" +#include "nghttp3_qpack_huffman.h" + +#define NGHTTP3_QPACK_INT_MAX ((1ull << 62) - 1) + +/* NGHTTP3_QPACK_MAX_NAMELEN is the maximum (compressed) length of + header name this library can decode. */ +#define NGHTTP3_QPACK_MAX_NAMELEN 256 +/* NGHTTP3_QPACK_MAX_VALUELEN is the maximum (compressed) length of + header value this library can decode. */ +#define NGHTTP3_QPACK_MAX_VALUELEN 65536 +/* NGHTTP3_QPACK_MAX_ENCODERLEN is the maximum encoder stream length + that a decoder accepts without completely processing a single field + section. */ +#define NGHTTP3_QPACK_MAX_ENCODERLEN (128 * 1024) +/* NGHTTP3_QPACK_MAX_DECODERLEN is the maximum decoder stream length + that an encoder accepts without completely encoding a single field + section. */ +#define NGHTTP3_QPACK_MAX_DECODERLEN (4 * 1024) + +/* nghttp3_qpack_indexing_mode is a indexing strategy. */ +typedef enum nghttp3_qpack_indexing_mode { + /* NGHTTP3_QPACK_INDEXING_MODE_LITERAL means that header field + should not be inserted into dynamic table. */ + NGHTTP3_QPACK_INDEXING_MODE_LITERAL, + /* NGHTTP3_QPACK_INDEXING_MODE_STORE means that header field can be + inserted into dynamic table. */ + NGHTTP3_QPACK_INDEXING_MODE_STORE, + /* NGHTTP3_QPACK_INDEXING_MODE_NEVER means that header field should + not be inserted into dynamic table and this must be true for all + forwarding paths. */ + NGHTTP3_QPACK_INDEXING_MODE_NEVER, +} nghttp3_qpack_indexing_mode; + +typedef struct nghttp3_qpack_entry nghttp3_qpack_entry; + +struct nghttp3_qpack_entry { + /* The header field name/value pair */ + nghttp3_qpack_nv nv; + /* map_next points to the entry which shares same bucket in hash + table. */ + nghttp3_qpack_entry *map_next; + /* sum is the sum of all entries inserted up to this entry. This + value does not contain the space required for this entry. */ + size_t sum; + /* absidx is the absolute index of this entry. */ + uint64_t absidx; + /* The hash value for header name (nv.name). */ + uint32_t hash; +}; + +/* The entry used for static table. */ +typedef struct nghttp3_qpack_static_entry { + uint64_t absidx; + int32_t token; + uint32_t hash; +} nghttp3_qpack_static_entry; + +typedef struct nghttp3_qpack_static_header { + nghttp3_rcbuf name; + nghttp3_rcbuf value; + int32_t token; +} nghttp3_qpack_static_header; + +/* + * nghttp3_qpack_header_block_ref is created per encoded header block + * and includes the required insert count and the minimum insert count + * of dynamic table entry it refers to. + */ +typedef struct nghttp3_qpack_header_block_ref { + nghttp3_pq_entry max_cnts_pe; + nghttp3_pq_entry min_cnts_pe; + /* max_cnt is the required insert count. */ + uint64_t max_cnt; + /* min_cnt is the minimum insert count of dynamic table entry it + refers to. In other words, this is the minimum absolute index of + dynamic header table entry this encoded block refers to plus + 1. */ + uint64_t min_cnt; +} nghttp3_qpack_header_block_ref; + +int nghttp3_qpack_header_block_ref_new(nghttp3_qpack_header_block_ref **pref, + uint64_t max_cnt, uint64_t min_cnt, + const nghttp3_mem *mem); + +void nghttp3_qpack_header_block_ref_del(nghttp3_qpack_header_block_ref *ref, + const nghttp3_mem *mem); + +typedef struct nghttp3_qpack_stream { + int64_t stream_id; + /* refs is an array of pointer to nghttp3_qpack_header_block_ref in + the order of the time they are encoded. HTTP/3 allows multiple + header blocks (e.g., non-final response headers, final response + headers, trailers, and push promises) per stream. */ + nghttp3_ringbuf refs; + /* max_cnts is a priority queue sorted by descending order of + max_cnt of nghttp3_qpack_header_block_ref. */ + nghttp3_pq max_cnts; +} nghttp3_qpack_stream; + +int nghttp3_qpack_stream_new(nghttp3_qpack_stream **pstream, int64_t stream_id, + const nghttp3_mem *mem); + +void nghttp3_qpack_stream_del(nghttp3_qpack_stream *stream, + const nghttp3_mem *mem); + +uint64_t nghttp3_qpack_stream_get_max_cnt(const nghttp3_qpack_stream *stream); + +int nghttp3_qpack_stream_add_ref(nghttp3_qpack_stream *stream, + nghttp3_qpack_header_block_ref *ref); + +void nghttp3_qpack_stream_pop_ref(nghttp3_qpack_stream *stream); + +#define NGHTTP3_QPACK_ENTRY_OVERHEAD 32 + +typedef struct nghttp3_qpack_context { + /* dtable is a dynamic table */ + nghttp3_ringbuf dtable; + /* mem is memory allocator */ + const nghttp3_mem *mem; + /* dtable_size is abstracted buffer size of dtable as described in + the spec. This is the sum of length of name/value in dtable + + NGHTTP3_QPACK_ENTRY_OVERHEAD bytes overhead per each entry. */ + size_t dtable_size; + size_t dtable_sum; + /* hard_max_dtable_capacity is the upper bound of + max_dtable_capacity. */ + size_t hard_max_dtable_capacity; + /* max_dtable_capacity is the maximum capacity of the dynamic + table. */ + size_t max_dtable_capacity; + /* max_blocked_streams is the maximum number of stream which can be + blocked. */ + size_t max_blocked_streams; + /* next_absidx is the next absolute index for nghttp3_qpack_entry. + It is equivalent to insert count. */ + uint64_t next_absidx; + /* If inflate/deflate error occurred, this value is set to 1 and + further invocation of inflate/deflate will fail with + NGHTTP3_ERR_QPACK_FATAL. */ + uint8_t bad; +} nghttp3_qpack_context; + +typedef struct nghttp3_qpack_read_state { + nghttp3_qpack_huffman_decode_context huffman_ctx; + nghttp3_buf namebuf; + nghttp3_buf valuebuf; + nghttp3_rcbuf *name; + nghttp3_rcbuf *value; + uint64_t left; + size_t prefix; + size_t shift; + uint64_t absidx; + int never; + int dynamic; + int huffman_encoded; +} nghttp3_qpack_read_state; + +void nghttp3_qpack_read_state_free(nghttp3_qpack_read_state *rstate); + +void nghttp3_qpack_read_state_reset(nghttp3_qpack_read_state *rstate); + +#define NGHTTP3_QPACK_MAP_SIZE 64 + +typedef struct nghttp3_qpack_map { + nghttp3_qpack_entry *table[NGHTTP3_QPACK_MAP_SIZE]; +} nghttp3_qpack_map; + +/* nghttp3_qpack_decoder_stream_state is a set of states when decoding + decoder stream. */ +typedef enum nghttp3_qpack_decoder_stream_state { + NGHTTP3_QPACK_DS_STATE_OPCODE, + NGHTTP3_QPACK_DS_STATE_READ_NUMBER, +} nghttp3_qpack_decoder_stream_state; + +/* nghttp3_qpack_decoder_stream_opcode is opcode used in decoder + stream. */ +typedef enum nghttp3_qpack_decoder_stream_opcode { + NGHTTP3_QPACK_DS_OPCODE_ICNT_INCREMENT, + NGHTTP3_QPACK_DS_OPCODE_SECTION_ACK, + NGHTTP3_QPACK_DS_OPCODE_STREAM_CANCEL, +} nghttp3_qpack_decoder_stream_opcode; + +/* QPACK encoder flags */ + +/* NGHTTP3_QPACK_ENCODER_FLAG_NONE indicates that no flag is set. */ +#define NGHTTP3_QPACK_ENCODER_FLAG_NONE 0x00u +/* NGHTTP3_QPACK_ENCODER_FLAG_PENDING_SET_DTABLE_CAP indicates that + Set Dynamic Table Capacity is required. */ +#define NGHTTP3_QPACK_ENCODER_FLAG_PENDING_SET_DTABLE_CAP 0x01u + +struct nghttp3_qpack_encoder { + nghttp3_qpack_context ctx; + /* dtable_map is a map of hash to nghttp3_qpack_entry to provide + fast access to an entry in dynamic table. */ + nghttp3_qpack_map dtable_map; + /* streams is a map of stream ID to nghttp3_qpack_stream to keep + track of unacknowledged streams. */ + nghttp3_map streams; + /* blocked_streams is an ordered list of nghttp3_qpack_stream, in + descending order of max_cnt, to search the unblocked streams by + received known count. */ + nghttp3_ksl blocked_streams; + /* min_cnts is a priority queue of nghttp3_qpack_header_block_ref + sorted by ascending order of min_cnt to know that an entry can be + evicted from dynamic table. */ + nghttp3_pq min_cnts; + /* krcnt is Known Received Count. */ + uint64_t krcnt; + /* state is a current state of reading decoder stream. */ + nghttp3_qpack_decoder_stream_state state; + /* opcode is a decoder stream opcode being processed. */ + nghttp3_qpack_decoder_stream_opcode opcode; + /* rstate is a set of intermediate state which are used to process + decoder stream. */ + nghttp3_qpack_read_state rstate; + /* min_dtable_update is the minimum dynamic table size required. */ + size_t min_dtable_update; + /* last_max_dtable_update is the dynamic table size last + requested. */ + size_t last_max_dtable_update; + /* uninterrupted_decoderlen is the number of bytes read from decoder + stream without encoding a single field section. */ + size_t uninterrupted_decoderlen; + /* flags is bitwise OR of zero or more of + NGHTTP3_QPACK_ENCODER_FLAG_*. */ + uint8_t flags; +}; + +/* + * nghttp3_qpack_encoder_init initializes |encoder|. + * |hard_max_dtable_capacity| is the upper bound of the dynamic table + * capacity. |mem| is a memory allocator. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_init(nghttp3_qpack_encoder *encoder, + size_t hard_max_dtable_capacity, + const nghttp3_mem *mem); + +/* + * nghttp3_qpack_encoder_free frees memory allocated for |encoder|. + * This function does not free memory pointed by |encoder|. + */ +void nghttp3_qpack_encoder_free(nghttp3_qpack_encoder *encoder); + +/* + * nghttp3_qpack_encoder_encode_nv encodes |nv|. It writes request + * stream into |rbuf| and writes encoder stream into |ebuf|. |nv| is + * a header field to encode. |base| is base. |allow_blocking| is + * nonzero if this stream can be blocked (or it has been blocked + * already). + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_encode_nv(nghttp3_qpack_encoder *encoder, + uint64_t *pmax_cnt, uint64_t *pmin_cnt, + nghttp3_buf *rbuf, nghttp3_buf *ebuf, + const nghttp3_nv *nv, uint64_t base, + int allow_blocking); + +/* nghttp3_qpack_lookup_result stores a result of table lookup. */ +typedef struct nghttp3_qpack_lookup_result { + /* index is an index of matched entry. -1 if no match is made. */ + nghttp3_ssize index; + /* name_value_match is nonzero if both name and value are + matched. */ + int name_value_match; + /* pb_index is the absolute index of matched post-based dynamic + table entry. -1 if no such entry exists. */ + nghttp3_ssize pb_index; +} nghttp3_qpack_lookup_result; + +/* + * nghttp3_qpack_lookup_stable searches |nv| in static table. |token| + * is a token of nv->name and it is -1 if there is no corresponding + * token defined. |indexing_mode| provides indexing strategy. + */ +nghttp3_qpack_lookup_result +nghttp3_qpack_lookup_stable(const nghttp3_nv *nv, int32_t token, + nghttp3_qpack_indexing_mode indexing_mode); + +/* + * nghttp3_qpack_encoder_lookup_dtable searches |nv| in dynamic table. + * |token| is a token of nv->name and it is -1 if there is no + * corresponding token defined. |hash| is a hash of nv->name. + * |indexing_mode| provides indexing strategy. |krcnt| is Known + * Received Count. |allow_blocking| is nonzero if this stream can be + * blocked (or it has been blocked already). + */ +nghttp3_qpack_lookup_result nghttp3_qpack_encoder_lookup_dtable( + nghttp3_qpack_encoder *encoder, const nghttp3_nv *nv, int32_t token, + uint32_t hash, nghttp3_qpack_indexing_mode indexing_mode, uint64_t krcnt, + int allow_blocking); + +/* + * nghttp3_qpack_encoder_write_field_section_prefix writes Encoded + * Field Section Prefix into |pbuf|. |ricnt| is Required Insert + * Count. |base| is Base. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_write_field_section_prefix( + nghttp3_qpack_encoder *encoder, nghttp3_buf *pbuf, uint64_t ricnt, + uint64_t base); + +/* + * nghttp3_qpack_encoder_write_static_indexed writes Indexed Header + * Field to |rbuf|. |absidx| is an absolute index into static table. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_write_static_indexed(nghttp3_qpack_encoder *encoder, + nghttp3_buf *rbuf, + uint64_t absidx); + +/* + * nghttp3_qpack_encoder_write_dynamic_indexed writes Indexed Header + * Field to |rbuf|. |absidx| is an absolute index into dynamic table. + * |base| is base. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_write_dynamic_indexed(nghttp3_qpack_encoder *encoder, + nghttp3_buf *rbuf, + uint64_t absidx, uint64_t base); + +/* + * nghttp3_qpack_encoder_write_static_indexed writes Literal Header + * Field With Name Reference to |rbuf|. |absidx| is an absolute index + * into static table to reference a name. |nv| is a header field to + * encode. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_write_static_indexed_name( + nghttp3_qpack_encoder *encoder, nghttp3_buf *rbuf, uint64_t absidx, + const nghttp3_nv *nv); + +/* + * nghttp3_qpack_encoder_write_dynamic_indexed writes Literal Header + * Field With Name Reference to |rbuf|. |absidx| is an absolute index + * into dynamic table to reference a name. |base| is a base. |nv| is + * a header field to encode. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_write_dynamic_indexed_name( + nghttp3_qpack_encoder *encoder, nghttp3_buf *rbuf, uint64_t absidx, + uint64_t base, const nghttp3_nv *nv); + +/* + * nghttp3_qpack_encoder_write_literal writes Literal Header Field + * With Literal Name to |rbuf|. |nv| is a header field to encode. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_write_literal(nghttp3_qpack_encoder *encoder, + nghttp3_buf *rbuf, + const nghttp3_nv *nv); + +/* + * nghttp3_qpack_encoder_write_static_insert writes Insert With Name + * Reference to |ebuf|. |absidx| is an absolute index into static + * table to reference a name. |nv| is a header field to insert. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_write_static_insert(nghttp3_qpack_encoder *encoder, + nghttp3_buf *ebuf, + uint64_t absidx, + const nghttp3_nv *nv); + +/* + * nghttp3_qpack_encoder_write_dynamic_insert writes Insert With Name + * Reference to |ebuf|. |absidx| is an absolute index into dynamic + * table to reference a name. |nv| is a header field to insert. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_write_dynamic_insert(nghttp3_qpack_encoder *encoder, + nghttp3_buf *ebuf, + uint64_t absidx, + const nghttp3_nv *nv); + +/* + * nghttp3_qpack_encoder_write_duplicate_insert writes Duplicate to + * |ebuf|. |absidx| is an absolute index into dynamic table to + * reference an entry. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_write_duplicate_insert(nghttp3_qpack_encoder *encoder, + nghttp3_buf *ebuf, + uint64_t absidx); + +/* + * nghttp3_qpack_encoder_write_literal_insert writes Insert With + * Literal Name to |ebuf|. |nv| is a header field to insert. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_write_literal_insert(nghttp3_qpack_encoder *encoder, + nghttp3_buf *ebuf, + const nghttp3_nv *nv); + +int nghttp3_qpack_encoder_stream_is_blocked(nghttp3_qpack_encoder *encoder, + nghttp3_qpack_stream *stream); + +/* + * nghttp3_qpack_encoder_block_stream blocks |stream|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_block_stream(nghttp3_qpack_encoder *encoder, + nghttp3_qpack_stream *stream); + +/* + * nghttp3_qpack_encoder_unblock_stream unblocks |stream|. + */ +void nghttp3_qpack_encoder_unblock_stream(nghttp3_qpack_encoder *encoder, + nghttp3_qpack_stream *stream); + +/* + * nghttp3_qpack_encoder_unblock unblocks stream whose max_cnt is less + * than or equal to |max_cnt|. + */ +void nghttp3_qpack_encoder_unblock(nghttp3_qpack_encoder *encoder, + uint64_t max_cnt); + +/* + * nghttp3_qpack_encoder_find_stream returns stream whose stream ID is + * |stream_id|. This function returns NULL if there is no such + * stream. + */ +nghttp3_qpack_stream * +nghttp3_qpack_encoder_find_stream(nghttp3_qpack_encoder *encoder, + int64_t stream_id); + +uint64_t nghttp3_qpack_encoder_get_min_cnt(nghttp3_qpack_encoder *encoder); + +/* + * nghttp3_qpack_encoder_shrink_dtable shrinks dynamic table so that + * the dynamic table size is less than or equal to maximum size. + */ +void nghttp3_qpack_encoder_shrink_dtable(nghttp3_qpack_encoder *encoder); + +/* + * nghttp3_qpack_encoder_process_dtable_update processes pending + * dynamic table size update. It might write encoder stream into + * |ebuf|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_process_dtable_update(nghttp3_qpack_encoder *encoder, + nghttp3_buf *ebuf); + +/* + * nghttp3_qpack_encoder_write_set_dtable_cap writes Set Dynamic Table + * Capacity. to |ebuf|. |cap| is the capacity of dynamic table. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_write_set_dtable_cap(nghttp3_qpack_encoder *encoder, + nghttp3_buf *ebuf, size_t cap); + +/* + * nghttp3_qpack_context_dtable_add adds |qnv| to dynamic table. If + * |ctx| is a part of encoder, |dtable_map| is not NULL. |hash| is a + * hash value of name. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_context_dtable_add(nghttp3_qpack_context *ctx, + nghttp3_qpack_nv *qnv, + nghttp3_qpack_map *dtable_map, + uint32_t hash); + +/* + * nghttp3_qpack_encoder_dtable_static_add adds |nv| to dynamic table + * by referencing static table entry at an absolute index |absidx|. + * The hash of name is given as |hash|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_dtable_static_add(nghttp3_qpack_encoder *encoder, + uint64_t absidx, + const nghttp3_nv *nv, + uint32_t hash); + +/* + * nghttp3_qpack_encoder_dtable_dynamic_add adds |nv| to dynamic table + * by referencing dynamic table entry at an absolute index |absidx|. + * The hash of name is given as |hash|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_dtable_dynamic_add(nghttp3_qpack_encoder *encoder, + uint64_t absidx, + const nghttp3_nv *nv, + uint32_t hash); + +/* + * nghttp3_qpack_encoder_dtable_duplicate_add duplicates dynamic table + * entry at an absolute index |absidx|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_encoder_dtable_duplicate_add(nghttp3_qpack_encoder *encoder, + uint64_t absidx); + +/* + * nghttp3_qpack_encoder_dtable_literal_add adds |nv| to dynamic + * table. |token| is a token of name and is -1 if it has no token + * value defined. |hash| is a hash of name. + * + * NGHTTP3_ERR_NOMEM Out of memory. + */ +int nghttp3_qpack_encoder_dtable_literal_add(nghttp3_qpack_encoder *encoder, + const nghttp3_nv *nv, + int32_t token, uint32_t hash); + +/* + * `nghttp3_qpack_encoder_ack_header` tells |encoder| that header + * block for a stream denoted by |stream_id| was acknowledged by + * decoder. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_QPACK_DECODER_STREAM_ERROR` + * Section Acknowledgement for a stream denoted by |stream_id| is + * unexpected. + */ +int nghttp3_qpack_encoder_ack_header(nghttp3_qpack_encoder *encoder, + int64_t stream_id); + +/* + * `nghttp3_qpack_encoder_add_icnt` increments known received count of + * |encoder| by |n|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGHTTP3_ERR_NOMEM` + * Out of memory. + * :macro:`NGHTTP3_ERR_QPACK_DECODER_STREAM_ERROR` + * |n| is too large. + */ +int nghttp3_qpack_encoder_add_icnt(nghttp3_qpack_encoder *encoder, uint64_t n); + +/* + * `nghttp3_qpack_encoder_cancel_stream` tells |encoder| that stream + * denoted by |stream_id| is cancelled. This function is provided for + * debugging purpose only. In HTTP/3, |encoder| knows this by reading + * decoder stream with `nghttp3_qpack_encoder_read_decoder()`. + */ +void nghttp3_qpack_encoder_cancel_stream(nghttp3_qpack_encoder *encoder, + int64_t stream_id); + +/* + * nghttp3_qpack_context_dtable_get returns dynamic table entry whose + * absolute index is |absidx|. This function assumes that such entry + * exists. + */ +nghttp3_qpack_entry * +nghttp3_qpack_context_dtable_get(nghttp3_qpack_context *ctx, uint64_t absidx); + +/* + * nghttp3_qpack_context_dtable_top returns latest dynamic table + * entry. This function assumes dynamic table is not empty. + */ +nghttp3_qpack_entry * +nghttp3_qpack_context_dtable_top(nghttp3_qpack_context *ctx); + +/* + * nghttp3_qpack_entry_init initializes |ent|. |qnv| is a header + * field. |sum| is the sum of table space occupied by all entries + * inserted so far. It does not include this entry. |absidx| is an + * absolute index of this entry. |hash| is a hash of header field + * name. This function increases reference count of qnv->nv.name and + * qnv->nv.value. + */ +void nghttp3_qpack_entry_init(nghttp3_qpack_entry *ent, nghttp3_qpack_nv *qnv, + size_t sum, uint64_t absidx, uint32_t hash); + +/* + * nghttp3_qpack_entry_free frees memory allocated for |ent|. + */ +void nghttp3_qpack_entry_free(nghttp3_qpack_entry *ent); + +/* + * nghttp3_qpack_put_varint_len returns the required number of bytes + * to encode |n| with |prefix| bits. + */ +size_t nghttp3_qpack_put_varint_len(uint64_t n, size_t prefix); + +/* + * nghttp3_qpack_put_varint encodes |n| using variable integer + * encoding with |prefix| bits into |buf|. This function assumes the + * buffer pointed by |buf| has enough space. This function returns + * the one byte beyond the last write (buf + + * nghttp3_qpack_put_varint_len(n, prefix)). + */ +uint8_t *nghttp3_qpack_put_varint(uint8_t *buf, uint64_t n, size_t prefix); + +/* nghttp3_qpack_encoder_stream_state is a set of states for encoder + stream decoding. */ +typedef enum nghttp3_qpack_encoder_stream_state { + NGHTTP3_QPACK_ES_STATE_OPCODE, + NGHTTP3_QPACK_ES_STATE_READ_INDEX, + NGHTTP3_QPACK_ES_STATE_CHECK_NAME_HUFFMAN, + NGHTTP3_QPACK_ES_STATE_READ_NAMELEN, + NGHTTP3_QPACK_ES_STATE_READ_NAME_HUFFMAN, + NGHTTP3_QPACK_ES_STATE_READ_NAME, + NGHTTP3_QPACK_ES_STATE_CHECK_VALUE_HUFFMAN, + NGHTTP3_QPACK_ES_STATE_READ_VALUELEN, + NGHTTP3_QPACK_ES_STATE_READ_VALUE_HUFFMAN, + NGHTTP3_QPACK_ES_STATE_READ_VALUE, +} nghttp3_qpack_encoder_stream_state; + +/* nghttp3_qpack_encoder_stream_opcode is a set of opcodes used in + encoder stream. */ +typedef enum nghttp3_qpack_encoder_stream_opcode { + NGHTTP3_QPACK_ES_OPCODE_INSERT_INDEXED, + NGHTTP3_QPACK_ES_OPCODE_INSERT, + NGHTTP3_QPACK_ES_OPCODE_DUPLICATE, + NGHTTP3_QPACK_ES_OPCODE_SET_DTABLE_CAP, +} nghttp3_qpack_encoder_stream_opcode; + +/* nghttp3_qpack_request_stream_state is a set of states for request + stream decoding. */ +typedef enum nghttp3_qpack_request_stream_state { + NGHTTP3_QPACK_RS_STATE_RICNT, + NGHTTP3_QPACK_RS_STATE_DBASE_SIGN, + NGHTTP3_QPACK_RS_STATE_DBASE, + NGHTTP3_QPACK_RS_STATE_OPCODE, + NGHTTP3_QPACK_RS_STATE_READ_INDEX, + NGHTTP3_QPACK_RS_STATE_CHECK_NAME_HUFFMAN, + NGHTTP3_QPACK_RS_STATE_READ_NAMELEN, + NGHTTP3_QPACK_RS_STATE_READ_NAME_HUFFMAN, + NGHTTP3_QPACK_RS_STATE_READ_NAME, + NGHTTP3_QPACK_RS_STATE_CHECK_VALUE_HUFFMAN, + NGHTTP3_QPACK_RS_STATE_READ_VALUELEN, + NGHTTP3_QPACK_RS_STATE_READ_VALUE_HUFFMAN, + NGHTTP3_QPACK_RS_STATE_READ_VALUE, + NGHTTP3_QPACK_RS_STATE_BLOCKED, +} nghttp3_qpack_request_stream_state; + +/* nghttp3_qpack_request_stream_opcode is a set of opcodes used in + request stream. */ +typedef enum nghttp3_qpack_request_stream_opcode { + NGHTTP3_QPACK_RS_OPCODE_INDEXED, + NGHTTP3_QPACK_RS_OPCODE_INDEXED_PB, + NGHTTP3_QPACK_RS_OPCODE_INDEXED_NAME, + NGHTTP3_QPACK_RS_OPCODE_INDEXED_NAME_PB, + NGHTTP3_QPACK_RS_OPCODE_LITERAL, +} nghttp3_qpack_request_stream_opcode; + +struct nghttp3_qpack_decoder { + nghttp3_qpack_context ctx; + /* state is a current state of reading encoder stream. */ + nghttp3_qpack_encoder_stream_state state; + /* opcode is an encoder stream opcode being processed. */ + nghttp3_qpack_encoder_stream_opcode opcode; + /* rstate is a set of intermediate state which are used to process + encoder stream. */ + nghttp3_qpack_read_state rstate; + /* dbuf is decoder stream. */ + nghttp3_buf dbuf; + /* written_icnt is Insert Count written to decoder stream so far. */ + uint64_t written_icnt; + /* max_concurrent_streams is the number of concurrent streams that a + remote endpoint can open, including both bidirectional and + unidirectional streams which potentially receives QPACK encoded + HEADER frame. */ + size_t max_concurrent_streams; + /* uninterrupted_encoderlen is the number of bytes read from encoder + stream without completing a single field section. */ + size_t uninterrupted_encoderlen; +}; + +/* + * nghttp3_qpack_decoder_init initializes |decoder|. + * |hard_max_dtable_capacity| is the upper bound of the dynamic table + * capacity. |max_blocked_streams| is the maximum number of stream + * which can be blocked. |mem| is a memory allocator. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_qpack_decoder_init(nghttp3_qpack_decoder *decoder, + size_t hard_max_dtable_capacity, + size_t max_blocked_streams, + const nghttp3_mem *mem); + +/* + * nghttp3_qpack_decoder_free frees memory allocated for |decoder|. + * This function does not free memory pointed by |decoder|. + */ +void nghttp3_qpack_decoder_free(nghttp3_qpack_decoder *decoder); + +/* + * nghttp3_qpack_decoder_dtable_indexed_add adds entry received in + * Insert With Name Reference to dynamic table. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + * NGHTTP3_ERR_QPACK_ENCODER_STREAM + * Space required for a decoded entry exceeds max dynamic table + * size. + */ +int nghttp3_qpack_decoder_dtable_indexed_add(nghttp3_qpack_decoder *decoder); + +/* + * nghttp3_qpack_decoder_dtable_static_add adds entry received in + * Insert With Name Reference (static) to dynamic table. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + * NGHTTP3_ERR_QPACK_ENCODER_STREAM + * Space required for a decoded entry exceeds max dynamic table + * size. + */ +int nghttp3_qpack_decoder_dtable_static_add(nghttp3_qpack_decoder *decoder); + +/* + * nghttp3_qpack_decoder_dtable_dynamic_add adds entry received in + * Insert With Name Reference (dynamic) to dynamic table. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + * NGHTTP3_ERR_QPACK_ENCODER_STREAM + * Space required for a decoded entry exceeds max dynamic table + * size. + */ +int nghttp3_qpack_decoder_dtable_dynamic_add(nghttp3_qpack_decoder *decoder); + +/* + * nghttp3_qpack_decoder_dtable_duplicate_add adds entry received in + * Duplicate to dynamic table. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + * NGHTTP3_ERR_QPACK_ENCODER_STREAM + * Space required for a decoded entry exceeds max dynamic table + * size. + */ +int nghttp3_qpack_decoder_dtable_duplicate_add(nghttp3_qpack_decoder *decoder); + +/* + * nghttp3_qpack_decoder_dtable_literal_add adds entry received in + * Insert With Literal Name to dynamic table. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + * NGHTTP3_ERR_QPACK_ENCODER_STREAM + * Space required for a decoded entry exceeds max dynamic table + * size. + */ +int nghttp3_qpack_decoder_dtable_literal_add(nghttp3_qpack_decoder *decoder); + +struct nghttp3_qpack_stream_context { + /* rstate is a set of intermediate state which are used to process + request stream. */ + nghttp3_qpack_read_state rstate; + const nghttp3_mem *mem; + int64_t stream_id; + /* ricnt is Required Insert Count to decode this header block. */ + uint64_t ricnt; + /* base is Base in Header Block Prefix. */ + uint64_t base; + /* state is a current state of reading request stream. */ + nghttp3_qpack_request_stream_state state; + /* opcode is a request stream opcode being processed. */ + nghttp3_qpack_request_stream_opcode opcode; + /* dbase_sign is the delta base sign in Header Block Prefix. */ + int dbase_sign; +}; + +/* + * nghttp3_qpack_stream_context_init initializes |sctx|. + */ +void nghttp3_qpack_stream_context_init(nghttp3_qpack_stream_context *sctx, + int64_t stream_id, + const nghttp3_mem *mem); + +/* + * nghttp3_qpack_stream_context_free frees memory allocated for + * |sctx|. This function does not free memory pointed by |sctx|. + */ +void nghttp3_qpack_stream_context_free(nghttp3_qpack_stream_context *sctx); + +/* + * nghttp3_qpack_decoder_reconstruct_ricnt reconstructs Required + * Insert Count from the encoded form |encricnt| and stores Required + * Insert Count in |*dest|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED + * Unable to reconstruct Required Insert Count. + */ +int nghttp3_qpack_decoder_reconstruct_ricnt(nghttp3_qpack_decoder *decoder, + uint64_t *dest, uint64_t encricnt); + +/* + * nghttp3_qpack_decoder_rel2abs converts relative index rstate->left + * received in encoder stream to absolute index and stores it in + * rstate->absidx. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_QPACK_ENCODER_STREAM + * Relative index is invalid. + */ +int nghttp3_qpack_decoder_rel2abs(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_read_state *rstate); + +/* + * nghttp3_qpack_decoder_brel2abs converts Base relative index + * rstate->left received in request stream to absolute index and + * stores it in rstate->absidx. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED + * Base relative index is invalid. + */ +int nghttp3_qpack_decoder_brel2abs(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx); + +/* + * nghttp3_qpack_decoder_pbrel2abs converts Post-Base relative index + * rstate->left received in request stream to absolute index and + * stores it in rstate->absidx. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_QPACK_DECOMPRESSION_FAILED + * Post-Base relative index is invalid. + */ +int nghttp3_qpack_decoder_pbrel2abs(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx); + +void nghttp3_qpack_decoder_emit_indexed(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx, + nghttp3_qpack_nv *nv); + +int nghttp3_qpack_decoder_emit_indexed_name(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx, + nghttp3_qpack_nv *nv); + +void nghttp3_qpack_decoder_emit_literal(nghttp3_qpack_decoder *decoder, + nghttp3_qpack_stream_context *sctx, + nghttp3_qpack_nv *nv); + +/* + * nghttp3_qpack_decoder_write_section_ack writes Section + * Acknowledgement to decoder stream. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + * NGHTTP3_ERR_QPACK_FATAL + * Decoder stream overflow. + */ +int nghttp3_qpack_decoder_write_section_ack( + nghttp3_qpack_decoder *decoder, const nghttp3_qpack_stream_context *sctx); + +#endif /* !defined(NGHTTP3_QPACK_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_qpack_huffman.c b/contrib/libs/nghttp3/lib/nghttp3_qpack_huffman.c new file mode 100644 index 0000000000..3398f3f508 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_qpack_huffman.c @@ -0,0 +1,124 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2013 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_qpack_huffman.h" + +#include <string.h> +#include <assert.h> +#include <stdio.h> + +#include "nghttp3_conv.h" + +size_t nghttp3_qpack_huffman_encode_count(const uint8_t *src, size_t len) { + size_t i; + size_t nbits = 0; + + for (i = 0; i < len; ++i) { + nbits += huffman_sym_table[src[i]].nbits; + } + /* pad the prefix of EOS (256) */ + return (nbits + 7) / 8; +} + +uint8_t *nghttp3_qpack_huffman_encode(uint8_t *dest, const uint8_t *src, + size_t srclen) { + const nghttp3_qpack_huffman_sym *sym; + const uint8_t *end = src + srclen; + uint64_t code = 0; + size_t nbits = 0; + uint32_t x; + + for (; src != end;) { + sym = &huffman_sym_table[*src++]; + code |= (uint64_t)sym->code << (32 - nbits); + nbits += sym->nbits; + if (nbits < 32) { + continue; + } + x = htonl((uint32_t)(code >> 32)); + memcpy(dest, &x, 4); + dest += 4; + code <<= 32; + nbits -= 32; + } + + for (; nbits >= 8;) { + *dest++ = (uint8_t)(code >> 56); + code <<= 8; + nbits -= 8; + } + + if (nbits) { + *dest++ = (uint8_t)((uint8_t)(code >> 56) | ((1 << (8 - nbits)) - 1)); + } + + return dest; +} + +void nghttp3_qpack_huffman_decode_context_init( + nghttp3_qpack_huffman_decode_context *ctx) { + ctx->fstate = NGHTTP3_QPACK_HUFFMAN_ACCEPTED; +} + +nghttp3_ssize +nghttp3_qpack_huffman_decode(nghttp3_qpack_huffman_decode_context *ctx, + uint8_t *dest, const uint8_t *src, size_t srclen, + int fin) { + uint8_t *p = dest; + const uint8_t *end = src + srclen; + nghttp3_qpack_huffman_decode_node node = {ctx->fstate, 0}; + const nghttp3_qpack_huffman_decode_node *t = &node; + uint8_t c; + + /* We use the decoding algorithm described in + - http://graphics.ics.uci.edu/pub/Prefix.pdf [!!! NO LONGER VALID !!!] + - https://ics.uci.edu/~dan/pubs/Prefix.pdf + - https://github.com/nghttp2/nghttp2/files/15141264/Prefix.pdf */ + for (; src != end;) { + c = *src++; + t = &qpack_huffman_decode_table[t->fstate & 0x1ff][c >> 4]; + if (t->fstate & NGHTTP3_QPACK_HUFFMAN_SYM) { + *p++ = t->sym; + } + + t = &qpack_huffman_decode_table[t->fstate & 0x1ff][c & 0xf]; + if (t->fstate & NGHTTP3_QPACK_HUFFMAN_SYM) { + *p++ = t->sym; + } + } + + ctx->fstate = t->fstate; + + if (fin && !(ctx->fstate & NGHTTP3_QPACK_HUFFMAN_ACCEPTED)) { + return NGHTTP3_ERR_QPACK_FATAL; + } + + return p - dest; +} + +int nghttp3_qpack_huffman_decode_failure_state( + nghttp3_qpack_huffman_decode_context *ctx) { + return ctx->fstate == 0x100; +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_qpack_huffman.h b/contrib/libs/nghttp3/lib/nghttp3_qpack_huffman.h new file mode 100644 index 0000000000..ab6d82a16a --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_qpack_huffman.h @@ -0,0 +1,108 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2013 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_QPACK_HUFFMAN_H +#define NGHTTP3_QPACK_HUFFMAN_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +typedef struct nghttp3_qpack_huffman_sym { + /* The number of bits in this code */ + uint32_t nbits; + /* Huffman code aligned to LSB */ + uint32_t code; +} nghttp3_qpack_huffman_sym; + +extern const nghttp3_qpack_huffman_sym huffman_sym_table[]; + +size_t nghttp3_qpack_huffman_encode_count(const uint8_t *src, size_t len); + +uint8_t *nghttp3_qpack_huffman_encode(uint8_t *dest, const uint8_t *src, + size_t srclen); + +typedef enum nghttp3_qpack_huffman_decode_flag { + /* FSA accepts this state as the end of huffman encoding + sequence. */ + NGHTTP3_QPACK_HUFFMAN_ACCEPTED = 1 << 14, + /* This state emits symbol */ + NGHTTP3_QPACK_HUFFMAN_SYM = 1 << 15, +} nghttp3_qpack_huffman_decode_flag; + +typedef struct nghttp3_qpack_huffman_decode_node { + /* fstate is the current huffman decoding state, which is actually + the node ID of internal huffman tree with + nghttp3_qpack_huffman_decode_flag OR-ed. We have 257 leaf nodes, + but they are identical to root node other than emitting a symbol, + so we have 256 internal nodes [1..256], inclusive. The node ID + 256 is a special node and it is a terminal state that means + decoding failed. */ + uint16_t fstate; + /* symbol if NGHTTP3_QPACK_HUFFMAN_SYM flag set */ + uint8_t sym; +} nghttp3_qpack_huffman_decode_node; + +typedef struct nghttp3_qpack_huffman_decode_context { + /* fstate is the current huffman decoding state. */ + uint16_t fstate; +} nghttp3_qpack_huffman_decode_context; + +extern const nghttp3_qpack_huffman_decode_node qpack_huffman_decode_table[][16]; + +void nghttp3_qpack_huffman_decode_context_init( + nghttp3_qpack_huffman_decode_context *ctx); + +/* + * nghttp3_qpack_huffman_decode decodes huffman encoded byte string + * stored in |src| of length |srclen|. |ctx| is a decoding context. + * |ctx| remembers the decoding state, and caller can call this + * function multiple times to feed each chunk of huffman encoded + * substring. |fin| must be nonzero if |src| contains the last chunk + * of huffman string. The decoded string is written to the buffer + * pointed by |dest|. This function assumes that the buffer pointed + * by |dest| contains enough memory to store decoded byte string. + * + * This function returns the number of bytes written to |dest|, or one + * of the following negative error codes: + * + * NGHTTP3_ERR_QPACK_FATAL + * Could not decode huffman string. + */ +nghttp3_ssize +nghttp3_qpack_huffman_decode(nghttp3_qpack_huffman_decode_context *ctx, + uint8_t *dest, const uint8_t *src, size_t srclen, + int fin); + +/* + * nghttp3_qpack_huffman_decode_failure_state returns nonzero if |ctx| + * indicates that huffman decoding context is in failure state. + */ +int nghttp3_qpack_huffman_decode_failure_state( + nghttp3_qpack_huffman_decode_context *ctx); + +#endif /* !defined(NGHTTP3_QPACK_HUFFMAN_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_qpack_huffman_data.c b/contrib/libs/nghttp3/lib/nghttp3_qpack_huffman_data.c new file mode 100644 index 0000000000..7c3c230f04 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_qpack_huffman_data.c @@ -0,0 +1,4981 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2013 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_qpack_huffman.h" + +/* Generated by mkhufftbl.py */ + +const nghttp3_qpack_huffman_sym huffman_sym_table[] = { + {13, 0xffc00000u}, {23, 0xffffb000u}, {28, 0xfffffe20u}, {28, 0xfffffe30u}, + {28, 0xfffffe40u}, {28, 0xfffffe50u}, {28, 0xfffffe60u}, {28, 0xfffffe70u}, + {28, 0xfffffe80u}, {24, 0xffffea00u}, {30, 0xfffffff0u}, {28, 0xfffffe90u}, + {28, 0xfffffea0u}, {30, 0xfffffff4u}, {28, 0xfffffeb0u}, {28, 0xfffffec0u}, + {28, 0xfffffed0u}, {28, 0xfffffee0u}, {28, 0xfffffef0u}, {28, 0xffffff00u}, + {28, 0xffffff10u}, {28, 0xffffff20u}, {30, 0xfffffff8u}, {28, 0xffffff30u}, + {28, 0xffffff40u}, {28, 0xffffff50u}, {28, 0xffffff60u}, {28, 0xffffff70u}, + {28, 0xffffff80u}, {28, 0xffffff90u}, {28, 0xffffffa0u}, {28, 0xffffffb0u}, + {6, 0x50000000u}, {10, 0xfe000000u}, {10, 0xfe400000u}, {12, 0xffa00000u}, + {13, 0xffc80000u}, {6, 0x54000000u}, {8, 0xf8000000u}, {11, 0xff400000u}, + {10, 0xfe800000u}, {10, 0xfec00000u}, {8, 0xf9000000u}, {11, 0xff600000u}, + {8, 0xfa000000u}, {6, 0x58000000u}, {6, 0x5c000000u}, {6, 0x60000000u}, + {5, 0x0u}, {5, 0x8000000u}, {5, 0x10000000u}, {6, 0x64000000u}, + {6, 0x68000000u}, {6, 0x6c000000u}, {6, 0x70000000u}, {6, 0x74000000u}, + {6, 0x78000000u}, {6, 0x7c000000u}, {7, 0xb8000000u}, {8, 0xfb000000u}, + {15, 0xfff80000u}, {6, 0x80000000u}, {12, 0xffb00000u}, {10, 0xff000000u}, + {13, 0xffd00000u}, {6, 0x84000000u}, {7, 0xba000000u}, {7, 0xbc000000u}, + {7, 0xbe000000u}, {7, 0xc0000000u}, {7, 0xc2000000u}, {7, 0xc4000000u}, + {7, 0xc6000000u}, {7, 0xc8000000u}, {7, 0xca000000u}, {7, 0xcc000000u}, + {7, 0xce000000u}, {7, 0xd0000000u}, {7, 0xd2000000u}, {7, 0xd4000000u}, + {7, 0xd6000000u}, {7, 0xd8000000u}, {7, 0xda000000u}, {7, 0xdc000000u}, + {7, 0xde000000u}, {7, 0xe0000000u}, {7, 0xe2000000u}, {7, 0xe4000000u}, + {8, 0xfc000000u}, {7, 0xe6000000u}, {8, 0xfd000000u}, {13, 0xffd80000u}, + {19, 0xfffe0000u}, {13, 0xffe00000u}, {14, 0xfff00000u}, {6, 0x88000000u}, + {15, 0xfffa0000u}, {5, 0x18000000u}, {6, 0x8c000000u}, {5, 0x20000000u}, + {6, 0x90000000u}, {5, 0x28000000u}, {6, 0x94000000u}, {6, 0x98000000u}, + {6, 0x9c000000u}, {5, 0x30000000u}, {7, 0xe8000000u}, {7, 0xea000000u}, + {6, 0xa0000000u}, {6, 0xa4000000u}, {6, 0xa8000000u}, {5, 0x38000000u}, + {6, 0xac000000u}, {7, 0xec000000u}, {6, 0xb0000000u}, {5, 0x40000000u}, + {5, 0x48000000u}, {6, 0xb4000000u}, {7, 0xee000000u}, {7, 0xf0000000u}, + {7, 0xf2000000u}, {7, 0xf4000000u}, {7, 0xf6000000u}, {15, 0xfffc0000u}, + {11, 0xff800000u}, {14, 0xfff40000u}, {13, 0xffe80000u}, {28, 0xffffffc0u}, + {20, 0xfffe6000u}, {22, 0xffff4800u}, {20, 0xfffe7000u}, {20, 0xfffe8000u}, + {22, 0xffff4c00u}, {22, 0xffff5000u}, {22, 0xffff5400u}, {23, 0xffffb200u}, + {22, 0xffff5800u}, {23, 0xffffb400u}, {23, 0xffffb600u}, {23, 0xffffb800u}, + {23, 0xffffba00u}, {23, 0xffffbc00u}, {24, 0xffffeb00u}, {23, 0xffffbe00u}, + {24, 0xffffec00u}, {24, 0xffffed00u}, {22, 0xffff5c00u}, {23, 0xffffc000u}, + {24, 0xffffee00u}, {23, 0xffffc200u}, {23, 0xffffc400u}, {23, 0xffffc600u}, + {23, 0xffffc800u}, {21, 0xfffee000u}, {22, 0xffff6000u}, {23, 0xffffca00u}, + {22, 0xffff6400u}, {23, 0xffffcc00u}, {23, 0xffffce00u}, {24, 0xffffef00u}, + {22, 0xffff6800u}, {21, 0xfffee800u}, {20, 0xfffe9000u}, {22, 0xffff6c00u}, + {22, 0xffff7000u}, {23, 0xffffd000u}, {23, 0xffffd200u}, {21, 0xfffef000u}, + {23, 0xffffd400u}, {22, 0xffff7400u}, {22, 0xffff7800u}, {24, 0xfffff000u}, + {21, 0xfffef800u}, {22, 0xffff7c00u}, {23, 0xffffd600u}, {23, 0xffffd800u}, + {21, 0xffff0000u}, {21, 0xffff0800u}, {22, 0xffff8000u}, {21, 0xffff1000u}, + {23, 0xffffda00u}, {22, 0xffff8400u}, {23, 0xffffdc00u}, {23, 0xffffde00u}, + {20, 0xfffea000u}, {22, 0xffff8800u}, {22, 0xffff8c00u}, {22, 0xffff9000u}, + {23, 0xffffe000u}, {22, 0xffff9400u}, {22, 0xffff9800u}, {23, 0xffffe200u}, + {26, 0xfffff800u}, {26, 0xfffff840u}, {20, 0xfffeb000u}, {19, 0xfffe2000u}, + {22, 0xffff9c00u}, {23, 0xffffe400u}, {22, 0xffffa000u}, {25, 0xfffff600u}, + {26, 0xfffff880u}, {26, 0xfffff8c0u}, {26, 0xfffff900u}, {27, 0xfffffbc0u}, + {27, 0xfffffbe0u}, {26, 0xfffff940u}, {24, 0xfffff100u}, {25, 0xfffff680u}, + {19, 0xfffe4000u}, {21, 0xffff1800u}, {26, 0xfffff980u}, {27, 0xfffffc00u}, + {27, 0xfffffc20u}, {26, 0xfffff9c0u}, {27, 0xfffffc40u}, {24, 0xfffff200u}, + {21, 0xffff2000u}, {21, 0xffff2800u}, {26, 0xfffffa00u}, {26, 0xfffffa40u}, + {28, 0xffffffd0u}, {27, 0xfffffc60u}, {27, 0xfffffc80u}, {27, 0xfffffca0u}, + {20, 0xfffec000u}, {24, 0xfffff300u}, {20, 0xfffed000u}, {21, 0xffff3000u}, + {22, 0xffffa400u}, {21, 0xffff3800u}, {21, 0xffff4000u}, {23, 0xffffe600u}, + {22, 0xffffa800u}, {22, 0xffffac00u}, {25, 0xfffff700u}, {25, 0xfffff780u}, + {24, 0xfffff400u}, {24, 0xfffff500u}, {26, 0xfffffa80u}, {23, 0xffffe800u}, + {26, 0xfffffac0u}, {27, 0xfffffcc0u}, {26, 0xfffffb00u}, {26, 0xfffffb40u}, + {27, 0xfffffce0u}, {27, 0xfffffd00u}, {27, 0xfffffd20u}, {27, 0xfffffd40u}, + {27, 0xfffffd60u}, {28, 0xffffffe0u}, {27, 0xfffffd80u}, {27, 0xfffffda0u}, + {27, 0xfffffdc0u}, {27, 0xfffffde0u}, {27, 0xfffffe00u}, {26, 0xfffffb80u}, + {30, 0xfffffffcu}}; + +const nghttp3_qpack_huffman_decode_node qpack_huffman_decode_table[][16] = { + /* 0 */ + { + {0x04, 0}, + {0x05, 0}, + {0x07, 0}, + {0x08, 0}, + {0x0b, 0}, + {0x0c, 0}, + {0x10, 0}, + {0x13, 0}, + {0x19, 0}, + {0x1c, 0}, + {0x20, 0}, + {0x23, 0}, + {0x2a, 0}, + {0x31, 0}, + {0x39, 0}, + {0x4040, 0}, + }, + /* 1 */ + { + {0xc000, 48}, + {0xc000, 49}, + {0xc000, 50}, + {0xc000, 97}, + {0xc000, 99}, + {0xc000, 101}, + {0xc000, 105}, + {0xc000, 111}, + {0xc000, 115}, + {0xc000, 116}, + {0x0d, 0}, + {0x0e, 0}, + {0x11, 0}, + {0x12, 0}, + {0x14, 0}, + {0x15, 0}, + }, + /* 2 */ + { + {0x8001, 48}, + {0xc016, 48}, + {0x8001, 49}, + {0xc016, 49}, + {0x8001, 50}, + {0xc016, 50}, + {0x8001, 97}, + {0xc016, 97}, + {0x8001, 99}, + {0xc016, 99}, + {0x8001, 101}, + {0xc016, 101}, + {0x8001, 105}, + {0xc016, 105}, + {0x8001, 111}, + {0xc016, 111}, + }, + /* 3 */ + { + {0x8002, 48}, + {0x8009, 48}, + {0x8017, 48}, + {0xc028, 48}, + {0x8002, 49}, + {0x8009, 49}, + {0x8017, 49}, + {0xc028, 49}, + {0x8002, 50}, + {0x8009, 50}, + {0x8017, 50}, + {0xc028, 50}, + {0x8002, 97}, + {0x8009, 97}, + {0x8017, 97}, + {0xc028, 97}, + }, + /* 4 */ + { + {0x8003, 48}, + {0x8006, 48}, + {0x800a, 48}, + {0x800f, 48}, + {0x8018, 48}, + {0x801f, 48}, + {0x8029, 48}, + {0xc038, 48}, + {0x8003, 49}, + {0x8006, 49}, + {0x800a, 49}, + {0x800f, 49}, + {0x8018, 49}, + {0x801f, 49}, + {0x8029, 49}, + {0xc038, 49}, + }, + /* 5 */ + { + {0x8003, 50}, + {0x8006, 50}, + {0x800a, 50}, + {0x800f, 50}, + {0x8018, 50}, + {0x801f, 50}, + {0x8029, 50}, + {0xc038, 50}, + {0x8003, 97}, + {0x8006, 97}, + {0x800a, 97}, + {0x800f, 97}, + {0x8018, 97}, + {0x801f, 97}, + {0x8029, 97}, + {0xc038, 97}, + }, + /* 6 */ + { + {0x8002, 99}, + {0x8009, 99}, + {0x8017, 99}, + {0xc028, 99}, + {0x8002, 101}, + {0x8009, 101}, + {0x8017, 101}, + {0xc028, 101}, + {0x8002, 105}, + {0x8009, 105}, + {0x8017, 105}, + {0xc028, 105}, + {0x8002, 111}, + {0x8009, 111}, + {0x8017, 111}, + {0xc028, 111}, + }, + /* 7 */ + { + {0x8003, 99}, + {0x8006, 99}, + {0x800a, 99}, + {0x800f, 99}, + {0x8018, 99}, + {0x801f, 99}, + {0x8029, 99}, + {0xc038, 99}, + {0x8003, 101}, + {0x8006, 101}, + {0x800a, 101}, + {0x800f, 101}, + {0x8018, 101}, + {0x801f, 101}, + {0x8029, 101}, + {0xc038, 101}, + }, + /* 8 */ + { + {0x8003, 105}, + {0x8006, 105}, + {0x800a, 105}, + {0x800f, 105}, + {0x8018, 105}, + {0x801f, 105}, + {0x8029, 105}, + {0xc038, 105}, + {0x8003, 111}, + {0x8006, 111}, + {0x800a, 111}, + {0x800f, 111}, + {0x8018, 111}, + {0x801f, 111}, + {0x8029, 111}, + {0xc038, 111}, + }, + /* 9 */ + { + {0x8001, 115}, + {0xc016, 115}, + {0x8001, 116}, + {0xc016, 116}, + {0xc000, 32}, + {0xc000, 37}, + {0xc000, 45}, + {0xc000, 46}, + {0xc000, 47}, + {0xc000, 51}, + {0xc000, 52}, + {0xc000, 53}, + {0xc000, 54}, + {0xc000, 55}, + {0xc000, 56}, + {0xc000, 57}, + }, + /* 10 */ + { + {0x8002, 115}, + {0x8009, 115}, + {0x8017, 115}, + {0xc028, 115}, + {0x8002, 116}, + {0x8009, 116}, + {0x8017, 116}, + {0xc028, 116}, + {0x8001, 32}, + {0xc016, 32}, + {0x8001, 37}, + {0xc016, 37}, + {0x8001, 45}, + {0xc016, 45}, + {0x8001, 46}, + {0xc016, 46}, + }, + /* 11 */ + { + {0x8003, 115}, + {0x8006, 115}, + {0x800a, 115}, + {0x800f, 115}, + {0x8018, 115}, + {0x801f, 115}, + {0x8029, 115}, + {0xc038, 115}, + {0x8003, 116}, + {0x8006, 116}, + {0x800a, 116}, + {0x800f, 116}, + {0x8018, 116}, + {0x801f, 116}, + {0x8029, 116}, + {0xc038, 116}, + }, + /* 12 */ + { + {0x8002, 32}, + {0x8009, 32}, + {0x8017, 32}, + {0xc028, 32}, + {0x8002, 37}, + {0x8009, 37}, + {0x8017, 37}, + {0xc028, 37}, + {0x8002, 45}, + {0x8009, 45}, + {0x8017, 45}, + {0xc028, 45}, + {0x8002, 46}, + {0x8009, 46}, + {0x8017, 46}, + {0xc028, 46}, + }, + /* 13 */ + { + {0x8003, 32}, + {0x8006, 32}, + {0x800a, 32}, + {0x800f, 32}, + {0x8018, 32}, + {0x801f, 32}, + {0x8029, 32}, + {0xc038, 32}, + {0x8003, 37}, + {0x8006, 37}, + {0x800a, 37}, + {0x800f, 37}, + {0x8018, 37}, + {0x801f, 37}, + {0x8029, 37}, + {0xc038, 37}, + }, + /* 14 */ + { + {0x8003, 45}, + {0x8006, 45}, + {0x800a, 45}, + {0x800f, 45}, + {0x8018, 45}, + {0x801f, 45}, + {0x8029, 45}, + {0xc038, 45}, + {0x8003, 46}, + {0x8006, 46}, + {0x800a, 46}, + {0x800f, 46}, + {0x8018, 46}, + {0x801f, 46}, + {0x8029, 46}, + {0xc038, 46}, + }, + /* 15 */ + { + {0x8001, 47}, + {0xc016, 47}, + {0x8001, 51}, + {0xc016, 51}, + {0x8001, 52}, + {0xc016, 52}, + {0x8001, 53}, + {0xc016, 53}, + {0x8001, 54}, + {0xc016, 54}, + {0x8001, 55}, + {0xc016, 55}, + {0x8001, 56}, + {0xc016, 56}, + {0x8001, 57}, + {0xc016, 57}, + }, + /* 16 */ + { + {0x8002, 47}, + {0x8009, 47}, + {0x8017, 47}, + {0xc028, 47}, + {0x8002, 51}, + {0x8009, 51}, + {0x8017, 51}, + {0xc028, 51}, + {0x8002, 52}, + {0x8009, 52}, + {0x8017, 52}, + {0xc028, 52}, + {0x8002, 53}, + {0x8009, 53}, + {0x8017, 53}, + {0xc028, 53}, + }, + /* 17 */ + { + {0x8003, 47}, + {0x8006, 47}, + {0x800a, 47}, + {0x800f, 47}, + {0x8018, 47}, + {0x801f, 47}, + {0x8029, 47}, + {0xc038, 47}, + {0x8003, 51}, + {0x8006, 51}, + {0x800a, 51}, + {0x800f, 51}, + {0x8018, 51}, + {0x801f, 51}, + {0x8029, 51}, + {0xc038, 51}, + }, + /* 18 */ + { + {0x8003, 52}, + {0x8006, 52}, + {0x800a, 52}, + {0x800f, 52}, + {0x8018, 52}, + {0x801f, 52}, + {0x8029, 52}, + {0xc038, 52}, + {0x8003, 53}, + {0x8006, 53}, + {0x800a, 53}, + {0x800f, 53}, + {0x8018, 53}, + {0x801f, 53}, + {0x8029, 53}, + {0xc038, 53}, + }, + /* 19 */ + { + {0x8002, 54}, + {0x8009, 54}, + {0x8017, 54}, + {0xc028, 54}, + {0x8002, 55}, + {0x8009, 55}, + {0x8017, 55}, + {0xc028, 55}, + {0x8002, 56}, + {0x8009, 56}, + {0x8017, 56}, + {0xc028, 56}, + {0x8002, 57}, + {0x8009, 57}, + {0x8017, 57}, + {0xc028, 57}, + }, + /* 20 */ + { + {0x8003, 54}, + {0x8006, 54}, + {0x800a, 54}, + {0x800f, 54}, + {0x8018, 54}, + {0x801f, 54}, + {0x8029, 54}, + {0xc038, 54}, + {0x8003, 55}, + {0x8006, 55}, + {0x800a, 55}, + {0x800f, 55}, + {0x8018, 55}, + {0x801f, 55}, + {0x8029, 55}, + {0xc038, 55}, + }, + /* 21 */ + { + {0x8003, 56}, + {0x8006, 56}, + {0x800a, 56}, + {0x800f, 56}, + {0x8018, 56}, + {0x801f, 56}, + {0x8029, 56}, + {0xc038, 56}, + {0x8003, 57}, + {0x8006, 57}, + {0x800a, 57}, + {0x800f, 57}, + {0x8018, 57}, + {0x801f, 57}, + {0x8029, 57}, + {0xc038, 57}, + }, + /* 22 */ + { + {0x1a, 0}, + {0x1b, 0}, + {0x1d, 0}, + {0x1e, 0}, + {0x21, 0}, + {0x22, 0}, + {0x24, 0}, + {0x25, 0}, + {0x2b, 0}, + {0x2e, 0}, + {0x32, 0}, + {0x35, 0}, + {0x3a, 0}, + {0x3d, 0}, + {0x41, 0}, + {0x4044, 0}, + }, + /* 23 */ + { + {0xc000, 61}, + {0xc000, 65}, + {0xc000, 95}, + {0xc000, 98}, + {0xc000, 100}, + {0xc000, 102}, + {0xc000, 103}, + {0xc000, 104}, + {0xc000, 108}, + {0xc000, 109}, + {0xc000, 110}, + {0xc000, 112}, + {0xc000, 114}, + {0xc000, 117}, + {0x26, 0}, + {0x27, 0}, + }, + /* 24 */ + { + {0x8001, 61}, + {0xc016, 61}, + {0x8001, 65}, + {0xc016, 65}, + {0x8001, 95}, + {0xc016, 95}, + {0x8001, 98}, + {0xc016, 98}, + {0x8001, 100}, + {0xc016, 100}, + {0x8001, 102}, + {0xc016, 102}, + {0x8001, 103}, + {0xc016, 103}, + {0x8001, 104}, + {0xc016, 104}, + }, + /* 25 */ + { + {0x8002, 61}, + {0x8009, 61}, + {0x8017, 61}, + {0xc028, 61}, + {0x8002, 65}, + {0x8009, 65}, + {0x8017, 65}, + {0xc028, 65}, + {0x8002, 95}, + {0x8009, 95}, + {0x8017, 95}, + {0xc028, 95}, + {0x8002, 98}, + {0x8009, 98}, + {0x8017, 98}, + {0xc028, 98}, + }, + /* 26 */ + { + {0x8003, 61}, + {0x8006, 61}, + {0x800a, 61}, + {0x800f, 61}, + {0x8018, 61}, + {0x801f, 61}, + {0x8029, 61}, + {0xc038, 61}, + {0x8003, 65}, + {0x8006, 65}, + {0x800a, 65}, + {0x800f, 65}, + {0x8018, 65}, + {0x801f, 65}, + {0x8029, 65}, + {0xc038, 65}, + }, + /* 27 */ + { + {0x8003, 95}, + {0x8006, 95}, + {0x800a, 95}, + {0x800f, 95}, + {0x8018, 95}, + {0x801f, 95}, + {0x8029, 95}, + {0xc038, 95}, + {0x8003, 98}, + {0x8006, 98}, + {0x800a, 98}, + {0x800f, 98}, + {0x8018, 98}, + {0x801f, 98}, + {0x8029, 98}, + {0xc038, 98}, + }, + /* 28 */ + { + {0x8002, 100}, + {0x8009, 100}, + {0x8017, 100}, + {0xc028, 100}, + {0x8002, 102}, + {0x8009, 102}, + {0x8017, 102}, + {0xc028, 102}, + {0x8002, 103}, + {0x8009, 103}, + {0x8017, 103}, + {0xc028, 103}, + {0x8002, 104}, + {0x8009, 104}, + {0x8017, 104}, + {0xc028, 104}, + }, + /* 29 */ + { + {0x8003, 100}, + {0x8006, 100}, + {0x800a, 100}, + {0x800f, 100}, + {0x8018, 100}, + {0x801f, 100}, + {0x8029, 100}, + {0xc038, 100}, + {0x8003, 102}, + {0x8006, 102}, + {0x800a, 102}, + {0x800f, 102}, + {0x8018, 102}, + {0x801f, 102}, + {0x8029, 102}, + {0xc038, 102}, + }, + /* 30 */ + { + {0x8003, 103}, + {0x8006, 103}, + {0x800a, 103}, + {0x800f, 103}, + {0x8018, 103}, + {0x801f, 103}, + {0x8029, 103}, + {0xc038, 103}, + {0x8003, 104}, + {0x8006, 104}, + {0x800a, 104}, + {0x800f, 104}, + {0x8018, 104}, + {0x801f, 104}, + {0x8029, 104}, + {0xc038, 104}, + }, + /* 31 */ + { + {0x8001, 108}, + {0xc016, 108}, + {0x8001, 109}, + {0xc016, 109}, + {0x8001, 110}, + {0xc016, 110}, + {0x8001, 112}, + {0xc016, 112}, + {0x8001, 114}, + {0xc016, 114}, + {0x8001, 117}, + {0xc016, 117}, + {0xc000, 58}, + {0xc000, 66}, + {0xc000, 67}, + {0xc000, 68}, + }, + /* 32 */ + { + {0x8002, 108}, + {0x8009, 108}, + {0x8017, 108}, + {0xc028, 108}, + {0x8002, 109}, + {0x8009, 109}, + {0x8017, 109}, + {0xc028, 109}, + {0x8002, 110}, + {0x8009, 110}, + {0x8017, 110}, + {0xc028, 110}, + {0x8002, 112}, + {0x8009, 112}, + {0x8017, 112}, + {0xc028, 112}, + }, + /* 33 */ + { + {0x8003, 108}, + {0x8006, 108}, + {0x800a, 108}, + {0x800f, 108}, + {0x8018, 108}, + {0x801f, 108}, + {0x8029, 108}, + {0xc038, 108}, + {0x8003, 109}, + {0x8006, 109}, + {0x800a, 109}, + {0x800f, 109}, + {0x8018, 109}, + {0x801f, 109}, + {0x8029, 109}, + {0xc038, 109}, + }, + /* 34 */ + { + {0x8003, 110}, + {0x8006, 110}, + {0x800a, 110}, + {0x800f, 110}, + {0x8018, 110}, + {0x801f, 110}, + {0x8029, 110}, + {0xc038, 110}, + {0x8003, 112}, + {0x8006, 112}, + {0x800a, 112}, + {0x800f, 112}, + {0x8018, 112}, + {0x801f, 112}, + {0x8029, 112}, + {0xc038, 112}, + }, + /* 35 */ + { + {0x8002, 114}, + {0x8009, 114}, + {0x8017, 114}, + {0xc028, 114}, + {0x8002, 117}, + {0x8009, 117}, + {0x8017, 117}, + {0xc028, 117}, + {0x8001, 58}, + {0xc016, 58}, + {0x8001, 66}, + {0xc016, 66}, + {0x8001, 67}, + {0xc016, 67}, + {0x8001, 68}, + {0xc016, 68}, + }, + /* 36 */ + { + {0x8003, 114}, + {0x8006, 114}, + {0x800a, 114}, + {0x800f, 114}, + {0x8018, 114}, + {0x801f, 114}, + {0x8029, 114}, + {0xc038, 114}, + {0x8003, 117}, + {0x8006, 117}, + {0x800a, 117}, + {0x800f, 117}, + {0x8018, 117}, + {0x801f, 117}, + {0x8029, 117}, + {0xc038, 117}, + }, + /* 37 */ + { + {0x8002, 58}, + {0x8009, 58}, + {0x8017, 58}, + {0xc028, 58}, + {0x8002, 66}, + {0x8009, 66}, + {0x8017, 66}, + {0xc028, 66}, + {0x8002, 67}, + {0x8009, 67}, + {0x8017, 67}, + {0xc028, 67}, + {0x8002, 68}, + {0x8009, 68}, + {0x8017, 68}, + {0xc028, 68}, + }, + /* 38 */ + { + {0x8003, 58}, + {0x8006, 58}, + {0x800a, 58}, + {0x800f, 58}, + {0x8018, 58}, + {0x801f, 58}, + {0x8029, 58}, + {0xc038, 58}, + {0x8003, 66}, + {0x8006, 66}, + {0x800a, 66}, + {0x800f, 66}, + {0x8018, 66}, + {0x801f, 66}, + {0x8029, 66}, + {0xc038, 66}, + }, + /* 39 */ + { + {0x8003, 67}, + {0x8006, 67}, + {0x800a, 67}, + {0x800f, 67}, + {0x8018, 67}, + {0x801f, 67}, + {0x8029, 67}, + {0xc038, 67}, + {0x8003, 68}, + {0x8006, 68}, + {0x800a, 68}, + {0x800f, 68}, + {0x8018, 68}, + {0x801f, 68}, + {0x8029, 68}, + {0xc038, 68}, + }, + /* 40 */ + { + {0x2c, 0}, + {0x2d, 0}, + {0x2f, 0}, + {0x30, 0}, + {0x33, 0}, + {0x34, 0}, + {0x36, 0}, + {0x37, 0}, + {0x3b, 0}, + {0x3c, 0}, + {0x3e, 0}, + {0x3f, 0}, + {0x42, 0}, + {0x43, 0}, + {0x45, 0}, + {0x4048, 0}, + }, + /* 41 */ + { + {0xc000, 69}, + {0xc000, 70}, + {0xc000, 71}, + {0xc000, 72}, + {0xc000, 73}, + {0xc000, 74}, + {0xc000, 75}, + {0xc000, 76}, + {0xc000, 77}, + {0xc000, 78}, + {0xc000, 79}, + {0xc000, 80}, + {0xc000, 81}, + {0xc000, 82}, + {0xc000, 83}, + {0xc000, 84}, + }, + /* 42 */ + { + {0x8001, 69}, + {0xc016, 69}, + {0x8001, 70}, + {0xc016, 70}, + {0x8001, 71}, + {0xc016, 71}, + {0x8001, 72}, + {0xc016, 72}, + {0x8001, 73}, + {0xc016, 73}, + {0x8001, 74}, + {0xc016, 74}, + {0x8001, 75}, + {0xc016, 75}, + {0x8001, 76}, + {0xc016, 76}, + }, + /* 43 */ + { + {0x8002, 69}, + {0x8009, 69}, + {0x8017, 69}, + {0xc028, 69}, + {0x8002, 70}, + {0x8009, 70}, + {0x8017, 70}, + {0xc028, 70}, + {0x8002, 71}, + {0x8009, 71}, + {0x8017, 71}, + {0xc028, 71}, + {0x8002, 72}, + {0x8009, 72}, + {0x8017, 72}, + {0xc028, 72}, + }, + /* 44 */ + { + {0x8003, 69}, + {0x8006, 69}, + {0x800a, 69}, + {0x800f, 69}, + {0x8018, 69}, + {0x801f, 69}, + {0x8029, 69}, + {0xc038, 69}, + {0x8003, 70}, + {0x8006, 70}, + {0x800a, 70}, + {0x800f, 70}, + {0x8018, 70}, + {0x801f, 70}, + {0x8029, 70}, + {0xc038, 70}, + }, + /* 45 */ + { + {0x8003, 71}, + {0x8006, 71}, + {0x800a, 71}, + {0x800f, 71}, + {0x8018, 71}, + {0x801f, 71}, + {0x8029, 71}, + {0xc038, 71}, + {0x8003, 72}, + {0x8006, 72}, + {0x800a, 72}, + {0x800f, 72}, + {0x8018, 72}, + {0x801f, 72}, + {0x8029, 72}, + {0xc038, 72}, + }, + /* 46 */ + { + {0x8002, 73}, + {0x8009, 73}, + {0x8017, 73}, + {0xc028, 73}, + {0x8002, 74}, + {0x8009, 74}, + {0x8017, 74}, + {0xc028, 74}, + {0x8002, 75}, + {0x8009, 75}, + {0x8017, 75}, + {0xc028, 75}, + {0x8002, 76}, + {0x8009, 76}, + {0x8017, 76}, + {0xc028, 76}, + }, + /* 47 */ + { + {0x8003, 73}, + {0x8006, 73}, + {0x800a, 73}, + {0x800f, 73}, + {0x8018, 73}, + {0x801f, 73}, + {0x8029, 73}, + {0xc038, 73}, + {0x8003, 74}, + {0x8006, 74}, + {0x800a, 74}, + {0x800f, 74}, + {0x8018, 74}, + {0x801f, 74}, + {0x8029, 74}, + {0xc038, 74}, + }, + /* 48 */ + { + {0x8003, 75}, + {0x8006, 75}, + {0x800a, 75}, + {0x800f, 75}, + {0x8018, 75}, + {0x801f, 75}, + {0x8029, 75}, + {0xc038, 75}, + {0x8003, 76}, + {0x8006, 76}, + {0x800a, 76}, + {0x800f, 76}, + {0x8018, 76}, + {0x801f, 76}, + {0x8029, 76}, + {0xc038, 76}, + }, + /* 49 */ + { + {0x8001, 77}, + {0xc016, 77}, + {0x8001, 78}, + {0xc016, 78}, + {0x8001, 79}, + {0xc016, 79}, + {0x8001, 80}, + {0xc016, 80}, + {0x8001, 81}, + {0xc016, 81}, + {0x8001, 82}, + {0xc016, 82}, + {0x8001, 83}, + {0xc016, 83}, + {0x8001, 84}, + {0xc016, 84}, + }, + /* 50 */ + { + {0x8002, 77}, + {0x8009, 77}, + {0x8017, 77}, + {0xc028, 77}, + {0x8002, 78}, + {0x8009, 78}, + {0x8017, 78}, + {0xc028, 78}, + {0x8002, 79}, + {0x8009, 79}, + {0x8017, 79}, + {0xc028, 79}, + {0x8002, 80}, + {0x8009, 80}, + {0x8017, 80}, + {0xc028, 80}, + }, + /* 51 */ + { + {0x8003, 77}, + {0x8006, 77}, + {0x800a, 77}, + {0x800f, 77}, + {0x8018, 77}, + {0x801f, 77}, + {0x8029, 77}, + {0xc038, 77}, + {0x8003, 78}, + {0x8006, 78}, + {0x800a, 78}, + {0x800f, 78}, + {0x8018, 78}, + {0x801f, 78}, + {0x8029, 78}, + {0xc038, 78}, + }, + /* 52 */ + { + {0x8003, 79}, + {0x8006, 79}, + {0x800a, 79}, + {0x800f, 79}, + {0x8018, 79}, + {0x801f, 79}, + {0x8029, 79}, + {0xc038, 79}, + {0x8003, 80}, + {0x8006, 80}, + {0x800a, 80}, + {0x800f, 80}, + {0x8018, 80}, + {0x801f, 80}, + {0x8029, 80}, + {0xc038, 80}, + }, + /* 53 */ + { + {0x8002, 81}, + {0x8009, 81}, + {0x8017, 81}, + {0xc028, 81}, + {0x8002, 82}, + {0x8009, 82}, + {0x8017, 82}, + {0xc028, 82}, + {0x8002, 83}, + {0x8009, 83}, + {0x8017, 83}, + {0xc028, 83}, + {0x8002, 84}, + {0x8009, 84}, + {0x8017, 84}, + {0xc028, 84}, + }, + /* 54 */ + { + {0x8003, 81}, + {0x8006, 81}, + {0x800a, 81}, + {0x800f, 81}, + {0x8018, 81}, + {0x801f, 81}, + {0x8029, 81}, + {0xc038, 81}, + {0x8003, 82}, + {0x8006, 82}, + {0x800a, 82}, + {0x800f, 82}, + {0x8018, 82}, + {0x801f, 82}, + {0x8029, 82}, + {0xc038, 82}, + }, + /* 55 */ + { + {0x8003, 83}, + {0x8006, 83}, + {0x800a, 83}, + {0x800f, 83}, + {0x8018, 83}, + {0x801f, 83}, + {0x8029, 83}, + {0xc038, 83}, + {0x8003, 84}, + {0x8006, 84}, + {0x800a, 84}, + {0x800f, 84}, + {0x8018, 84}, + {0x801f, 84}, + {0x8029, 84}, + {0xc038, 84}, + }, + /* 56 */ + { + {0xc000, 85}, + {0xc000, 86}, + {0xc000, 87}, + {0xc000, 89}, + {0xc000, 106}, + {0xc000, 107}, + {0xc000, 113}, + {0xc000, 118}, + {0xc000, 119}, + {0xc000, 120}, + {0xc000, 121}, + {0xc000, 122}, + {0x46, 0}, + {0x47, 0}, + {0x49, 0}, + {0x404a, 0}, + }, + /* 57 */ + { + {0x8001, 85}, + {0xc016, 85}, + {0x8001, 86}, + {0xc016, 86}, + {0x8001, 87}, + {0xc016, 87}, + {0x8001, 89}, + {0xc016, 89}, + {0x8001, 106}, + {0xc016, 106}, + {0x8001, 107}, + {0xc016, 107}, + {0x8001, 113}, + {0xc016, 113}, + {0x8001, 118}, + {0xc016, 118}, + }, + /* 58 */ + { + {0x8002, 85}, + {0x8009, 85}, + {0x8017, 85}, + {0xc028, 85}, + {0x8002, 86}, + {0x8009, 86}, + {0x8017, 86}, + {0xc028, 86}, + {0x8002, 87}, + {0x8009, 87}, + {0x8017, 87}, + {0xc028, 87}, + {0x8002, 89}, + {0x8009, 89}, + {0x8017, 89}, + {0xc028, 89}, + }, + /* 59 */ + { + {0x8003, 85}, + {0x8006, 85}, + {0x800a, 85}, + {0x800f, 85}, + {0x8018, 85}, + {0x801f, 85}, + {0x8029, 85}, + {0xc038, 85}, + {0x8003, 86}, + {0x8006, 86}, + {0x800a, 86}, + {0x800f, 86}, + {0x8018, 86}, + {0x801f, 86}, + {0x8029, 86}, + {0xc038, 86}, + }, + /* 60 */ + { + {0x8003, 87}, + {0x8006, 87}, + {0x800a, 87}, + {0x800f, 87}, + {0x8018, 87}, + {0x801f, 87}, + {0x8029, 87}, + {0xc038, 87}, + {0x8003, 89}, + {0x8006, 89}, + {0x800a, 89}, + {0x800f, 89}, + {0x8018, 89}, + {0x801f, 89}, + {0x8029, 89}, + {0xc038, 89}, + }, + /* 61 */ + { + {0x8002, 106}, + {0x8009, 106}, + {0x8017, 106}, + {0xc028, 106}, + {0x8002, 107}, + {0x8009, 107}, + {0x8017, 107}, + {0xc028, 107}, + {0x8002, 113}, + {0x8009, 113}, + {0x8017, 113}, + {0xc028, 113}, + {0x8002, 118}, + {0x8009, 118}, + {0x8017, 118}, + {0xc028, 118}, + }, + /* 62 */ + { + {0x8003, 106}, + {0x8006, 106}, + {0x800a, 106}, + {0x800f, 106}, + {0x8018, 106}, + {0x801f, 106}, + {0x8029, 106}, + {0xc038, 106}, + {0x8003, 107}, + {0x8006, 107}, + {0x800a, 107}, + {0x800f, 107}, + {0x8018, 107}, + {0x801f, 107}, + {0x8029, 107}, + {0xc038, 107}, + }, + /* 63 */ + { + {0x8003, 113}, + {0x8006, 113}, + {0x800a, 113}, + {0x800f, 113}, + {0x8018, 113}, + {0x801f, 113}, + {0x8029, 113}, + {0xc038, 113}, + {0x8003, 118}, + {0x8006, 118}, + {0x800a, 118}, + {0x800f, 118}, + {0x8018, 118}, + {0x801f, 118}, + {0x8029, 118}, + {0xc038, 118}, + }, + /* 64 */ + { + {0x8001, 119}, + {0xc016, 119}, + {0x8001, 120}, + {0xc016, 120}, + {0x8001, 121}, + {0xc016, 121}, + {0x8001, 122}, + {0xc016, 122}, + {0xc000, 38}, + {0xc000, 42}, + {0xc000, 44}, + {0xc000, 59}, + {0xc000, 88}, + {0xc000, 90}, + {0x4b, 0}, + {0x4e, 0}, + }, + /* 65 */ + { + {0x8002, 119}, + {0x8009, 119}, + {0x8017, 119}, + {0xc028, 119}, + {0x8002, 120}, + {0x8009, 120}, + {0x8017, 120}, + {0xc028, 120}, + {0x8002, 121}, + {0x8009, 121}, + {0x8017, 121}, + {0xc028, 121}, + {0x8002, 122}, + {0x8009, 122}, + {0x8017, 122}, + {0xc028, 122}, + }, + /* 66 */ + { + {0x8003, 119}, + {0x8006, 119}, + {0x800a, 119}, + {0x800f, 119}, + {0x8018, 119}, + {0x801f, 119}, + {0x8029, 119}, + {0xc038, 119}, + {0x8003, 120}, + {0x8006, 120}, + {0x800a, 120}, + {0x800f, 120}, + {0x8018, 120}, + {0x801f, 120}, + {0x8029, 120}, + {0xc038, 120}, + }, + /* 67 */ + { + {0x8003, 121}, + {0x8006, 121}, + {0x800a, 121}, + {0x800f, 121}, + {0x8018, 121}, + {0x801f, 121}, + {0x8029, 121}, + {0xc038, 121}, + {0x8003, 122}, + {0x8006, 122}, + {0x800a, 122}, + {0x800f, 122}, + {0x8018, 122}, + {0x801f, 122}, + {0x8029, 122}, + {0xc038, 122}, + }, + /* 68 */ + { + {0x8001, 38}, + {0xc016, 38}, + {0x8001, 42}, + {0xc016, 42}, + {0x8001, 44}, + {0xc016, 44}, + {0x8001, 59}, + {0xc016, 59}, + {0x8001, 88}, + {0xc016, 88}, + {0x8001, 90}, + {0xc016, 90}, + {0x4c, 0}, + {0x4d, 0}, + {0x4f, 0}, + {0x51, 0}, + }, + /* 69 */ + { + {0x8002, 38}, + {0x8009, 38}, + {0x8017, 38}, + {0xc028, 38}, + {0x8002, 42}, + {0x8009, 42}, + {0x8017, 42}, + {0xc028, 42}, + {0x8002, 44}, + {0x8009, 44}, + {0x8017, 44}, + {0xc028, 44}, + {0x8002, 59}, + {0x8009, 59}, + {0x8017, 59}, + {0xc028, 59}, + }, + /* 70 */ + { + {0x8003, 38}, + {0x8006, 38}, + {0x800a, 38}, + {0x800f, 38}, + {0x8018, 38}, + {0x801f, 38}, + {0x8029, 38}, + {0xc038, 38}, + {0x8003, 42}, + {0x8006, 42}, + {0x800a, 42}, + {0x800f, 42}, + {0x8018, 42}, + {0x801f, 42}, + {0x8029, 42}, + {0xc038, 42}, + }, + /* 71 */ + { + {0x8003, 44}, + {0x8006, 44}, + {0x800a, 44}, + {0x800f, 44}, + {0x8018, 44}, + {0x801f, 44}, + {0x8029, 44}, + {0xc038, 44}, + {0x8003, 59}, + {0x8006, 59}, + {0x800a, 59}, + {0x800f, 59}, + {0x8018, 59}, + {0x801f, 59}, + {0x8029, 59}, + {0xc038, 59}, + }, + /* 72 */ + { + {0x8002, 88}, + {0x8009, 88}, + {0x8017, 88}, + {0xc028, 88}, + {0x8002, 90}, + {0x8009, 90}, + {0x8017, 90}, + {0xc028, 90}, + {0xc000, 33}, + {0xc000, 34}, + {0xc000, 40}, + {0xc000, 41}, + {0xc000, 63}, + {0x50, 0}, + {0x52, 0}, + {0x54, 0}, + }, + /* 73 */ + { + {0x8003, 88}, + {0x8006, 88}, + {0x800a, 88}, + {0x800f, 88}, + {0x8018, 88}, + {0x801f, 88}, + {0x8029, 88}, + {0xc038, 88}, + {0x8003, 90}, + {0x8006, 90}, + {0x800a, 90}, + {0x800f, 90}, + {0x8018, 90}, + {0x801f, 90}, + {0x8029, 90}, + {0xc038, 90}, + }, + /* 74 */ + { + {0x8001, 33}, + {0xc016, 33}, + {0x8001, 34}, + {0xc016, 34}, + {0x8001, 40}, + {0xc016, 40}, + {0x8001, 41}, + {0xc016, 41}, + {0x8001, 63}, + {0xc016, 63}, + {0xc000, 39}, + {0xc000, 43}, + {0xc000, 124}, + {0x53, 0}, + {0x55, 0}, + {0x58, 0}, + }, + /* 75 */ + { + {0x8002, 33}, + {0x8009, 33}, + {0x8017, 33}, + {0xc028, 33}, + {0x8002, 34}, + {0x8009, 34}, + {0x8017, 34}, + {0xc028, 34}, + {0x8002, 40}, + {0x8009, 40}, + {0x8017, 40}, + {0xc028, 40}, + {0x8002, 41}, + {0x8009, 41}, + {0x8017, 41}, + {0xc028, 41}, + }, + /* 76 */ + { + {0x8003, 33}, + {0x8006, 33}, + {0x800a, 33}, + {0x800f, 33}, + {0x8018, 33}, + {0x801f, 33}, + {0x8029, 33}, + {0xc038, 33}, + {0x8003, 34}, + {0x8006, 34}, + {0x800a, 34}, + {0x800f, 34}, + {0x8018, 34}, + {0x801f, 34}, + {0x8029, 34}, + {0xc038, 34}, + }, + /* 77 */ + { + {0x8003, 40}, + {0x8006, 40}, + {0x800a, 40}, + {0x800f, 40}, + {0x8018, 40}, + {0x801f, 40}, + {0x8029, 40}, + {0xc038, 40}, + {0x8003, 41}, + {0x8006, 41}, + {0x800a, 41}, + {0x800f, 41}, + {0x8018, 41}, + {0x801f, 41}, + {0x8029, 41}, + {0xc038, 41}, + }, + /* 78 */ + { + {0x8002, 63}, + {0x8009, 63}, + {0x8017, 63}, + {0xc028, 63}, + {0x8001, 39}, + {0xc016, 39}, + {0x8001, 43}, + {0xc016, 43}, + {0x8001, 124}, + {0xc016, 124}, + {0xc000, 35}, + {0xc000, 62}, + {0x56, 0}, + {0x57, 0}, + {0x59, 0}, + {0x5a, 0}, + }, + /* 79 */ + { + {0x8003, 63}, + {0x8006, 63}, + {0x800a, 63}, + {0x800f, 63}, + {0x8018, 63}, + {0x801f, 63}, + {0x8029, 63}, + {0xc038, 63}, + {0x8002, 39}, + {0x8009, 39}, + {0x8017, 39}, + {0xc028, 39}, + {0x8002, 43}, + {0x8009, 43}, + {0x8017, 43}, + {0xc028, 43}, + }, + /* 80 */ + { + {0x8003, 39}, + {0x8006, 39}, + {0x800a, 39}, + {0x800f, 39}, + {0x8018, 39}, + {0x801f, 39}, + {0x8029, 39}, + {0xc038, 39}, + {0x8003, 43}, + {0x8006, 43}, + {0x800a, 43}, + {0x800f, 43}, + {0x8018, 43}, + {0x801f, 43}, + {0x8029, 43}, + {0xc038, 43}, + }, + /* 81 */ + { + {0x8002, 124}, + {0x8009, 124}, + {0x8017, 124}, + {0xc028, 124}, + {0x8001, 35}, + {0xc016, 35}, + {0x8001, 62}, + {0xc016, 62}, + {0xc000, 0}, + {0xc000, 36}, + {0xc000, 64}, + {0xc000, 91}, + {0xc000, 93}, + {0xc000, 126}, + {0x5b, 0}, + {0x5c, 0}, + }, + /* 82 */ + { + {0x8003, 124}, + {0x8006, 124}, + {0x800a, 124}, + {0x800f, 124}, + {0x8018, 124}, + {0x801f, 124}, + {0x8029, 124}, + {0xc038, 124}, + {0x8002, 35}, + {0x8009, 35}, + {0x8017, 35}, + {0xc028, 35}, + {0x8002, 62}, + {0x8009, 62}, + {0x8017, 62}, + {0xc028, 62}, + }, + /* 83 */ + { + {0x8003, 35}, + {0x8006, 35}, + {0x800a, 35}, + {0x800f, 35}, + {0x8018, 35}, + {0x801f, 35}, + {0x8029, 35}, + {0xc038, 35}, + {0x8003, 62}, + {0x8006, 62}, + {0x800a, 62}, + {0x800f, 62}, + {0x8018, 62}, + {0x801f, 62}, + {0x8029, 62}, + {0xc038, 62}, + }, + /* 84 */ + { + {0x8001, 0}, + {0xc016, 0}, + {0x8001, 36}, + {0xc016, 36}, + {0x8001, 64}, + {0xc016, 64}, + {0x8001, 91}, + {0xc016, 91}, + {0x8001, 93}, + {0xc016, 93}, + {0x8001, 126}, + {0xc016, 126}, + {0xc000, 94}, + {0xc000, 125}, + {0x5d, 0}, + {0x5e, 0}, + }, + /* 85 */ + { + {0x8002, 0}, + {0x8009, 0}, + {0x8017, 0}, + {0xc028, 0}, + {0x8002, 36}, + {0x8009, 36}, + {0x8017, 36}, + {0xc028, 36}, + {0x8002, 64}, + {0x8009, 64}, + {0x8017, 64}, + {0xc028, 64}, + {0x8002, 91}, + {0x8009, 91}, + {0x8017, 91}, + {0xc028, 91}, + }, + /* 86 */ + { + {0x8003, 0}, + {0x8006, 0}, + {0x800a, 0}, + {0x800f, 0}, + {0x8018, 0}, + {0x801f, 0}, + {0x8029, 0}, + {0xc038, 0}, + {0x8003, 36}, + {0x8006, 36}, + {0x800a, 36}, + {0x800f, 36}, + {0x8018, 36}, + {0x801f, 36}, + {0x8029, 36}, + {0xc038, 36}, + }, + /* 87 */ + { + {0x8003, 64}, + {0x8006, 64}, + {0x800a, 64}, + {0x800f, 64}, + {0x8018, 64}, + {0x801f, 64}, + {0x8029, 64}, + {0xc038, 64}, + {0x8003, 91}, + {0x8006, 91}, + {0x800a, 91}, + {0x800f, 91}, + {0x8018, 91}, + {0x801f, 91}, + {0x8029, 91}, + {0xc038, 91}, + }, + /* 88 */ + { + {0x8002, 93}, + {0x8009, 93}, + {0x8017, 93}, + {0xc028, 93}, + {0x8002, 126}, + {0x8009, 126}, + {0x8017, 126}, + {0xc028, 126}, + {0x8001, 94}, + {0xc016, 94}, + {0x8001, 125}, + {0xc016, 125}, + {0xc000, 60}, + {0xc000, 96}, + {0xc000, 123}, + {0x5f, 0}, + }, + /* 89 */ + { + {0x8003, 93}, + {0x8006, 93}, + {0x800a, 93}, + {0x800f, 93}, + {0x8018, 93}, + {0x801f, 93}, + {0x8029, 93}, + {0xc038, 93}, + {0x8003, 126}, + {0x8006, 126}, + {0x800a, 126}, + {0x800f, 126}, + {0x8018, 126}, + {0x801f, 126}, + {0x8029, 126}, + {0xc038, 126}, + }, + /* 90 */ + { + {0x8002, 94}, + {0x8009, 94}, + {0x8017, 94}, + {0xc028, 94}, + {0x8002, 125}, + {0x8009, 125}, + {0x8017, 125}, + {0xc028, 125}, + {0x8001, 60}, + {0xc016, 60}, + {0x8001, 96}, + {0xc016, 96}, + {0x8001, 123}, + {0xc016, 123}, + {0x60, 0}, + {0x6e, 0}, + }, + /* 91 */ + { + {0x8003, 94}, + {0x8006, 94}, + {0x800a, 94}, + {0x800f, 94}, + {0x8018, 94}, + {0x801f, 94}, + {0x8029, 94}, + {0xc038, 94}, + {0x8003, 125}, + {0x8006, 125}, + {0x800a, 125}, + {0x800f, 125}, + {0x8018, 125}, + {0x801f, 125}, + {0x8029, 125}, + {0xc038, 125}, + }, + /* 92 */ + { + {0x8002, 60}, + {0x8009, 60}, + {0x8017, 60}, + {0xc028, 60}, + {0x8002, 96}, + {0x8009, 96}, + {0x8017, 96}, + {0xc028, 96}, + {0x8002, 123}, + {0x8009, 123}, + {0x8017, 123}, + {0xc028, 123}, + {0x61, 0}, + {0x65, 0}, + {0x6f, 0}, + {0x85, 0}, + }, + /* 93 */ + { + {0x8003, 60}, + {0x8006, 60}, + {0x800a, 60}, + {0x800f, 60}, + {0x8018, 60}, + {0x801f, 60}, + {0x8029, 60}, + {0xc038, 60}, + {0x8003, 96}, + {0x8006, 96}, + {0x800a, 96}, + {0x800f, 96}, + {0x8018, 96}, + {0x801f, 96}, + {0x8029, 96}, + {0xc038, 96}, + }, + /* 94 */ + { + {0x8003, 123}, + {0x8006, 123}, + {0x800a, 123}, + {0x800f, 123}, + {0x8018, 123}, + {0x801f, 123}, + {0x8029, 123}, + {0xc038, 123}, + {0x62, 0}, + {0x63, 0}, + {0x66, 0}, + {0x69, 0}, + {0x70, 0}, + {0x77, 0}, + {0x86, 0}, + {0x99, 0}, + }, + /* 95 */ + { + {0xc000, 92}, + {0xc000, 195}, + {0xc000, 208}, + {0x64, 0}, + {0x67, 0}, + {0x68, 0}, + {0x6a, 0}, + {0x6b, 0}, + {0x71, 0}, + {0x74, 0}, + {0x78, 0}, + {0x7e, 0}, + {0x87, 0}, + {0x8e, 0}, + {0x9a, 0}, + {0xa9, 0}, + }, + /* 96 */ + { + {0x8001, 92}, + {0xc016, 92}, + {0x8001, 195}, + {0xc016, 195}, + {0x8001, 208}, + {0xc016, 208}, + {0xc000, 128}, + {0xc000, 130}, + {0xc000, 131}, + {0xc000, 162}, + {0xc000, 184}, + {0xc000, 194}, + {0xc000, 224}, + {0xc000, 226}, + {0x6c, 0}, + {0x6d, 0}, + }, + /* 97 */ + { + {0x8002, 92}, + {0x8009, 92}, + {0x8017, 92}, + {0xc028, 92}, + {0x8002, 195}, + {0x8009, 195}, + {0x8017, 195}, + {0xc028, 195}, + {0x8002, 208}, + {0x8009, 208}, + {0x8017, 208}, + {0xc028, 208}, + {0x8001, 128}, + {0xc016, 128}, + {0x8001, 130}, + {0xc016, 130}, + }, + /* 98 */ + { + {0x8003, 92}, + {0x8006, 92}, + {0x800a, 92}, + {0x800f, 92}, + {0x8018, 92}, + {0x801f, 92}, + {0x8029, 92}, + {0xc038, 92}, + {0x8003, 195}, + {0x8006, 195}, + {0x800a, 195}, + {0x800f, 195}, + {0x8018, 195}, + {0x801f, 195}, + {0x8029, 195}, + {0xc038, 195}, + }, + /* 99 */ + { + {0x8003, 208}, + {0x8006, 208}, + {0x800a, 208}, + {0x800f, 208}, + {0x8018, 208}, + {0x801f, 208}, + {0x8029, 208}, + {0xc038, 208}, + {0x8002, 128}, + {0x8009, 128}, + {0x8017, 128}, + {0xc028, 128}, + {0x8002, 130}, + {0x8009, 130}, + {0x8017, 130}, + {0xc028, 130}, + }, + /* 100 */ + { + {0x8003, 128}, + {0x8006, 128}, + {0x800a, 128}, + {0x800f, 128}, + {0x8018, 128}, + {0x801f, 128}, + {0x8029, 128}, + {0xc038, 128}, + {0x8003, 130}, + {0x8006, 130}, + {0x800a, 130}, + {0x800f, 130}, + {0x8018, 130}, + {0x801f, 130}, + {0x8029, 130}, + {0xc038, 130}, + }, + /* 101 */ + { + {0x8001, 131}, + {0xc016, 131}, + {0x8001, 162}, + {0xc016, 162}, + {0x8001, 184}, + {0xc016, 184}, + {0x8001, 194}, + {0xc016, 194}, + {0x8001, 224}, + {0xc016, 224}, + {0x8001, 226}, + {0xc016, 226}, + {0xc000, 153}, + {0xc000, 161}, + {0xc000, 167}, + {0xc000, 172}, + }, + /* 102 */ + { + {0x8002, 131}, + {0x8009, 131}, + {0x8017, 131}, + {0xc028, 131}, + {0x8002, 162}, + {0x8009, 162}, + {0x8017, 162}, + {0xc028, 162}, + {0x8002, 184}, + {0x8009, 184}, + {0x8017, 184}, + {0xc028, 184}, + {0x8002, 194}, + {0x8009, 194}, + {0x8017, 194}, + {0xc028, 194}, + }, + /* 103 */ + { + {0x8003, 131}, + {0x8006, 131}, + {0x800a, 131}, + {0x800f, 131}, + {0x8018, 131}, + {0x801f, 131}, + {0x8029, 131}, + {0xc038, 131}, + {0x8003, 162}, + {0x8006, 162}, + {0x800a, 162}, + {0x800f, 162}, + {0x8018, 162}, + {0x801f, 162}, + {0x8029, 162}, + {0xc038, 162}, + }, + /* 104 */ + { + {0x8003, 184}, + {0x8006, 184}, + {0x800a, 184}, + {0x800f, 184}, + {0x8018, 184}, + {0x801f, 184}, + {0x8029, 184}, + {0xc038, 184}, + {0x8003, 194}, + {0x8006, 194}, + {0x800a, 194}, + {0x800f, 194}, + {0x8018, 194}, + {0x801f, 194}, + {0x8029, 194}, + {0xc038, 194}, + }, + /* 105 */ + { + {0x8002, 224}, + {0x8009, 224}, + {0x8017, 224}, + {0xc028, 224}, + {0x8002, 226}, + {0x8009, 226}, + {0x8017, 226}, + {0xc028, 226}, + {0x8001, 153}, + {0xc016, 153}, + {0x8001, 161}, + {0xc016, 161}, + {0x8001, 167}, + {0xc016, 167}, + {0x8001, 172}, + {0xc016, 172}, + }, + /* 106 */ + { + {0x8003, 224}, + {0x8006, 224}, + {0x800a, 224}, + {0x800f, 224}, + {0x8018, 224}, + {0x801f, 224}, + {0x8029, 224}, + {0xc038, 224}, + {0x8003, 226}, + {0x8006, 226}, + {0x800a, 226}, + {0x800f, 226}, + {0x8018, 226}, + {0x801f, 226}, + {0x8029, 226}, + {0xc038, 226}, + }, + /* 107 */ + { + {0x8002, 153}, + {0x8009, 153}, + {0x8017, 153}, + {0xc028, 153}, + {0x8002, 161}, + {0x8009, 161}, + {0x8017, 161}, + {0xc028, 161}, + {0x8002, 167}, + {0x8009, 167}, + {0x8017, 167}, + {0xc028, 167}, + {0x8002, 172}, + {0x8009, 172}, + {0x8017, 172}, + {0xc028, 172}, + }, + /* 108 */ + { + {0x8003, 153}, + {0x8006, 153}, + {0x800a, 153}, + {0x800f, 153}, + {0x8018, 153}, + {0x801f, 153}, + {0x8029, 153}, + {0xc038, 153}, + {0x8003, 161}, + {0x8006, 161}, + {0x800a, 161}, + {0x800f, 161}, + {0x8018, 161}, + {0x801f, 161}, + {0x8029, 161}, + {0xc038, 161}, + }, + /* 109 */ + { + {0x8003, 167}, + {0x8006, 167}, + {0x800a, 167}, + {0x800f, 167}, + {0x8018, 167}, + {0x801f, 167}, + {0x8029, 167}, + {0xc038, 167}, + {0x8003, 172}, + {0x8006, 172}, + {0x800a, 172}, + {0x800f, 172}, + {0x8018, 172}, + {0x801f, 172}, + {0x8029, 172}, + {0xc038, 172}, + }, + /* 110 */ + { + {0x72, 0}, + {0x73, 0}, + {0x75, 0}, + {0x76, 0}, + {0x79, 0}, + {0x7b, 0}, + {0x7f, 0}, + {0x82, 0}, + {0x88, 0}, + {0x8b, 0}, + {0x8f, 0}, + {0x92, 0}, + {0x9b, 0}, + {0xa2, 0}, + {0xaa, 0}, + {0xb4, 0}, + }, + /* 111 */ + { + {0xc000, 176}, + {0xc000, 177}, + {0xc000, 179}, + {0xc000, 209}, + {0xc000, 216}, + {0xc000, 217}, + {0xc000, 227}, + {0xc000, 229}, + {0xc000, 230}, + {0x7a, 0}, + {0x7c, 0}, + {0x7d, 0}, + {0x80, 0}, + {0x81, 0}, + {0x83, 0}, + {0x84, 0}, + }, + /* 112 */ + { + {0x8001, 176}, + {0xc016, 176}, + {0x8001, 177}, + {0xc016, 177}, + {0x8001, 179}, + {0xc016, 179}, + {0x8001, 209}, + {0xc016, 209}, + {0x8001, 216}, + {0xc016, 216}, + {0x8001, 217}, + {0xc016, 217}, + {0x8001, 227}, + {0xc016, 227}, + {0x8001, 229}, + {0xc016, 229}, + }, + /* 113 */ + { + {0x8002, 176}, + {0x8009, 176}, + {0x8017, 176}, + {0xc028, 176}, + {0x8002, 177}, + {0x8009, 177}, + {0x8017, 177}, + {0xc028, 177}, + {0x8002, 179}, + {0x8009, 179}, + {0x8017, 179}, + {0xc028, 179}, + {0x8002, 209}, + {0x8009, 209}, + {0x8017, 209}, + {0xc028, 209}, + }, + /* 114 */ + { + {0x8003, 176}, + {0x8006, 176}, + {0x800a, 176}, + {0x800f, 176}, + {0x8018, 176}, + {0x801f, 176}, + {0x8029, 176}, + {0xc038, 176}, + {0x8003, 177}, + {0x8006, 177}, + {0x800a, 177}, + {0x800f, 177}, + {0x8018, 177}, + {0x801f, 177}, + {0x8029, 177}, + {0xc038, 177}, + }, + /* 115 */ + { + {0x8003, 179}, + {0x8006, 179}, + {0x800a, 179}, + {0x800f, 179}, + {0x8018, 179}, + {0x801f, 179}, + {0x8029, 179}, + {0xc038, 179}, + {0x8003, 209}, + {0x8006, 209}, + {0x800a, 209}, + {0x800f, 209}, + {0x8018, 209}, + {0x801f, 209}, + {0x8029, 209}, + {0xc038, 209}, + }, + /* 116 */ + { + {0x8002, 216}, + {0x8009, 216}, + {0x8017, 216}, + {0xc028, 216}, + {0x8002, 217}, + {0x8009, 217}, + {0x8017, 217}, + {0xc028, 217}, + {0x8002, 227}, + {0x8009, 227}, + {0x8017, 227}, + {0xc028, 227}, + {0x8002, 229}, + {0x8009, 229}, + {0x8017, 229}, + {0xc028, 229}, + }, + /* 117 */ + { + {0x8003, 216}, + {0x8006, 216}, + {0x800a, 216}, + {0x800f, 216}, + {0x8018, 216}, + {0x801f, 216}, + {0x8029, 216}, + {0xc038, 216}, + {0x8003, 217}, + {0x8006, 217}, + {0x800a, 217}, + {0x800f, 217}, + {0x8018, 217}, + {0x801f, 217}, + {0x8029, 217}, + {0xc038, 217}, + }, + /* 118 */ + { + {0x8003, 227}, + {0x8006, 227}, + {0x800a, 227}, + {0x800f, 227}, + {0x8018, 227}, + {0x801f, 227}, + {0x8029, 227}, + {0xc038, 227}, + {0x8003, 229}, + {0x8006, 229}, + {0x800a, 229}, + {0x800f, 229}, + {0x8018, 229}, + {0x801f, 229}, + {0x8029, 229}, + {0xc038, 229}, + }, + /* 119 */ + { + {0x8001, 230}, + {0xc016, 230}, + {0xc000, 129}, + {0xc000, 132}, + {0xc000, 133}, + {0xc000, 134}, + {0xc000, 136}, + {0xc000, 146}, + {0xc000, 154}, + {0xc000, 156}, + {0xc000, 160}, + {0xc000, 163}, + {0xc000, 164}, + {0xc000, 169}, + {0xc000, 170}, + {0xc000, 173}, + }, + /* 120 */ + { + {0x8002, 230}, + {0x8009, 230}, + {0x8017, 230}, + {0xc028, 230}, + {0x8001, 129}, + {0xc016, 129}, + {0x8001, 132}, + {0xc016, 132}, + {0x8001, 133}, + {0xc016, 133}, + {0x8001, 134}, + {0xc016, 134}, + {0x8001, 136}, + {0xc016, 136}, + {0x8001, 146}, + {0xc016, 146}, + }, + /* 121 */ + { + {0x8003, 230}, + {0x8006, 230}, + {0x800a, 230}, + {0x800f, 230}, + {0x8018, 230}, + {0x801f, 230}, + {0x8029, 230}, + {0xc038, 230}, + {0x8002, 129}, + {0x8009, 129}, + {0x8017, 129}, + {0xc028, 129}, + {0x8002, 132}, + {0x8009, 132}, + {0x8017, 132}, + {0xc028, 132}, + }, + /* 122 */ + { + {0x8003, 129}, + {0x8006, 129}, + {0x800a, 129}, + {0x800f, 129}, + {0x8018, 129}, + {0x801f, 129}, + {0x8029, 129}, + {0xc038, 129}, + {0x8003, 132}, + {0x8006, 132}, + {0x800a, 132}, + {0x800f, 132}, + {0x8018, 132}, + {0x801f, 132}, + {0x8029, 132}, + {0xc038, 132}, + }, + /* 123 */ + { + {0x8002, 133}, + {0x8009, 133}, + {0x8017, 133}, + {0xc028, 133}, + {0x8002, 134}, + {0x8009, 134}, + {0x8017, 134}, + {0xc028, 134}, + {0x8002, 136}, + {0x8009, 136}, + {0x8017, 136}, + {0xc028, 136}, + {0x8002, 146}, + {0x8009, 146}, + {0x8017, 146}, + {0xc028, 146}, + }, + /* 124 */ + { + {0x8003, 133}, + {0x8006, 133}, + {0x800a, 133}, + {0x800f, 133}, + {0x8018, 133}, + {0x801f, 133}, + {0x8029, 133}, + {0xc038, 133}, + {0x8003, 134}, + {0x8006, 134}, + {0x800a, 134}, + {0x800f, 134}, + {0x8018, 134}, + {0x801f, 134}, + {0x8029, 134}, + {0xc038, 134}, + }, + /* 125 */ + { + {0x8003, 136}, + {0x8006, 136}, + {0x800a, 136}, + {0x800f, 136}, + {0x8018, 136}, + {0x801f, 136}, + {0x8029, 136}, + {0xc038, 136}, + {0x8003, 146}, + {0x8006, 146}, + {0x800a, 146}, + {0x800f, 146}, + {0x8018, 146}, + {0x801f, 146}, + {0x8029, 146}, + {0xc038, 146}, + }, + /* 126 */ + { + {0x8001, 154}, + {0xc016, 154}, + {0x8001, 156}, + {0xc016, 156}, + {0x8001, 160}, + {0xc016, 160}, + {0x8001, 163}, + {0xc016, 163}, + {0x8001, 164}, + {0xc016, 164}, + {0x8001, 169}, + {0xc016, 169}, + {0x8001, 170}, + {0xc016, 170}, + {0x8001, 173}, + {0xc016, 173}, + }, + /* 127 */ + { + {0x8002, 154}, + {0x8009, 154}, + {0x8017, 154}, + {0xc028, 154}, + {0x8002, 156}, + {0x8009, 156}, + {0x8017, 156}, + {0xc028, 156}, + {0x8002, 160}, + {0x8009, 160}, + {0x8017, 160}, + {0xc028, 160}, + {0x8002, 163}, + {0x8009, 163}, + {0x8017, 163}, + {0xc028, 163}, + }, + /* 128 */ + { + {0x8003, 154}, + {0x8006, 154}, + {0x800a, 154}, + {0x800f, 154}, + {0x8018, 154}, + {0x801f, 154}, + {0x8029, 154}, + {0xc038, 154}, + {0x8003, 156}, + {0x8006, 156}, + {0x800a, 156}, + {0x800f, 156}, + {0x8018, 156}, + {0x801f, 156}, + {0x8029, 156}, + {0xc038, 156}, + }, + /* 129 */ + { + {0x8003, 160}, + {0x8006, 160}, + {0x800a, 160}, + {0x800f, 160}, + {0x8018, 160}, + {0x801f, 160}, + {0x8029, 160}, + {0xc038, 160}, + {0x8003, 163}, + {0x8006, 163}, + {0x800a, 163}, + {0x800f, 163}, + {0x8018, 163}, + {0x801f, 163}, + {0x8029, 163}, + {0xc038, 163}, + }, + /* 130 */ + { + {0x8002, 164}, + {0x8009, 164}, + {0x8017, 164}, + {0xc028, 164}, + {0x8002, 169}, + {0x8009, 169}, + {0x8017, 169}, + {0xc028, 169}, + {0x8002, 170}, + {0x8009, 170}, + {0x8017, 170}, + {0xc028, 170}, + {0x8002, 173}, + {0x8009, 173}, + {0x8017, 173}, + {0xc028, 173}, + }, + /* 131 */ + { + {0x8003, 164}, + {0x8006, 164}, + {0x800a, 164}, + {0x800f, 164}, + {0x8018, 164}, + {0x801f, 164}, + {0x8029, 164}, + {0xc038, 164}, + {0x8003, 169}, + {0x8006, 169}, + {0x800a, 169}, + {0x800f, 169}, + {0x8018, 169}, + {0x801f, 169}, + {0x8029, 169}, + {0xc038, 169}, + }, + /* 132 */ + { + {0x8003, 170}, + {0x8006, 170}, + {0x800a, 170}, + {0x800f, 170}, + {0x8018, 170}, + {0x801f, 170}, + {0x8029, 170}, + {0xc038, 170}, + {0x8003, 173}, + {0x8006, 173}, + {0x800a, 173}, + {0x800f, 173}, + {0x8018, 173}, + {0x801f, 173}, + {0x8029, 173}, + {0xc038, 173}, + }, + /* 133 */ + { + {0x89, 0}, + {0x8a, 0}, + {0x8c, 0}, + {0x8d, 0}, + {0x90, 0}, + {0x91, 0}, + {0x93, 0}, + {0x96, 0}, + {0x9c, 0}, + {0x9f, 0}, + {0xa3, 0}, + {0xa6, 0}, + {0xab, 0}, + {0xae, 0}, + {0xb5, 0}, + {0xbe, 0}, + }, + /* 134 */ + { + {0xc000, 178}, + {0xc000, 181}, + {0xc000, 185}, + {0xc000, 186}, + {0xc000, 187}, + {0xc000, 189}, + {0xc000, 190}, + {0xc000, 196}, + {0xc000, 198}, + {0xc000, 228}, + {0xc000, 232}, + {0xc000, 233}, + {0x94, 0}, + {0x95, 0}, + {0x97, 0}, + {0x98, 0}, + }, + /* 135 */ + { + {0x8001, 178}, + {0xc016, 178}, + {0x8001, 181}, + {0xc016, 181}, + {0x8001, 185}, + {0xc016, 185}, + {0x8001, 186}, + {0xc016, 186}, + {0x8001, 187}, + {0xc016, 187}, + {0x8001, 189}, + {0xc016, 189}, + {0x8001, 190}, + {0xc016, 190}, + {0x8001, 196}, + {0xc016, 196}, + }, + /* 136 */ + { + {0x8002, 178}, + {0x8009, 178}, + {0x8017, 178}, + {0xc028, 178}, + {0x8002, 181}, + {0x8009, 181}, + {0x8017, 181}, + {0xc028, 181}, + {0x8002, 185}, + {0x8009, 185}, + {0x8017, 185}, + {0xc028, 185}, + {0x8002, 186}, + {0x8009, 186}, + {0x8017, 186}, + {0xc028, 186}, + }, + /* 137 */ + { + {0x8003, 178}, + {0x8006, 178}, + {0x800a, 178}, + {0x800f, 178}, + {0x8018, 178}, + {0x801f, 178}, + {0x8029, 178}, + {0xc038, 178}, + {0x8003, 181}, + {0x8006, 181}, + {0x800a, 181}, + {0x800f, 181}, + {0x8018, 181}, + {0x801f, 181}, + {0x8029, 181}, + {0xc038, 181}, + }, + /* 138 */ + { + {0x8003, 185}, + {0x8006, 185}, + {0x800a, 185}, + {0x800f, 185}, + {0x8018, 185}, + {0x801f, 185}, + {0x8029, 185}, + {0xc038, 185}, + {0x8003, 186}, + {0x8006, 186}, + {0x800a, 186}, + {0x800f, 186}, + {0x8018, 186}, + {0x801f, 186}, + {0x8029, 186}, + {0xc038, 186}, + }, + /* 139 */ + { + {0x8002, 187}, + {0x8009, 187}, + {0x8017, 187}, + {0xc028, 187}, + {0x8002, 189}, + {0x8009, 189}, + {0x8017, 189}, + {0xc028, 189}, + {0x8002, 190}, + {0x8009, 190}, + {0x8017, 190}, + {0xc028, 190}, + {0x8002, 196}, + {0x8009, 196}, + {0x8017, 196}, + {0xc028, 196}, + }, + /* 140 */ + { + {0x8003, 187}, + {0x8006, 187}, + {0x800a, 187}, + {0x800f, 187}, + {0x8018, 187}, + {0x801f, 187}, + {0x8029, 187}, + {0xc038, 187}, + {0x8003, 189}, + {0x8006, 189}, + {0x800a, 189}, + {0x800f, 189}, + {0x8018, 189}, + {0x801f, 189}, + {0x8029, 189}, + {0xc038, 189}, + }, + /* 141 */ + { + {0x8003, 190}, + {0x8006, 190}, + {0x800a, 190}, + {0x800f, 190}, + {0x8018, 190}, + {0x801f, 190}, + {0x8029, 190}, + {0xc038, 190}, + {0x8003, 196}, + {0x8006, 196}, + {0x800a, 196}, + {0x800f, 196}, + {0x8018, 196}, + {0x801f, 196}, + {0x8029, 196}, + {0xc038, 196}, + }, + /* 142 */ + { + {0x8001, 198}, + {0xc016, 198}, + {0x8001, 228}, + {0xc016, 228}, + {0x8001, 232}, + {0xc016, 232}, + {0x8001, 233}, + {0xc016, 233}, + {0xc000, 1}, + {0xc000, 135}, + {0xc000, 137}, + {0xc000, 138}, + {0xc000, 139}, + {0xc000, 140}, + {0xc000, 141}, + {0xc000, 143}, + }, + /* 143 */ + { + {0x8002, 198}, + {0x8009, 198}, + {0x8017, 198}, + {0xc028, 198}, + {0x8002, 228}, + {0x8009, 228}, + {0x8017, 228}, + {0xc028, 228}, + {0x8002, 232}, + {0x8009, 232}, + {0x8017, 232}, + {0xc028, 232}, + {0x8002, 233}, + {0x8009, 233}, + {0x8017, 233}, + {0xc028, 233}, + }, + /* 144 */ + { + {0x8003, 198}, + {0x8006, 198}, + {0x800a, 198}, + {0x800f, 198}, + {0x8018, 198}, + {0x801f, 198}, + {0x8029, 198}, + {0xc038, 198}, + {0x8003, 228}, + {0x8006, 228}, + {0x800a, 228}, + {0x800f, 228}, + {0x8018, 228}, + {0x801f, 228}, + {0x8029, 228}, + {0xc038, 228}, + }, + /* 145 */ + { + {0x8003, 232}, + {0x8006, 232}, + {0x800a, 232}, + {0x800f, 232}, + {0x8018, 232}, + {0x801f, 232}, + {0x8029, 232}, + {0xc038, 232}, + {0x8003, 233}, + {0x8006, 233}, + {0x800a, 233}, + {0x800f, 233}, + {0x8018, 233}, + {0x801f, 233}, + {0x8029, 233}, + {0xc038, 233}, + }, + /* 146 */ + { + {0x8001, 1}, + {0xc016, 1}, + {0x8001, 135}, + {0xc016, 135}, + {0x8001, 137}, + {0xc016, 137}, + {0x8001, 138}, + {0xc016, 138}, + {0x8001, 139}, + {0xc016, 139}, + {0x8001, 140}, + {0xc016, 140}, + {0x8001, 141}, + {0xc016, 141}, + {0x8001, 143}, + {0xc016, 143}, + }, + /* 147 */ + { + {0x8002, 1}, + {0x8009, 1}, + {0x8017, 1}, + {0xc028, 1}, + {0x8002, 135}, + {0x8009, 135}, + {0x8017, 135}, + {0xc028, 135}, + {0x8002, 137}, + {0x8009, 137}, + {0x8017, 137}, + {0xc028, 137}, + {0x8002, 138}, + {0x8009, 138}, + {0x8017, 138}, + {0xc028, 138}, + }, + /* 148 */ + { + {0x8003, 1}, + {0x8006, 1}, + {0x800a, 1}, + {0x800f, 1}, + {0x8018, 1}, + {0x801f, 1}, + {0x8029, 1}, + {0xc038, 1}, + {0x8003, 135}, + {0x8006, 135}, + {0x800a, 135}, + {0x800f, 135}, + {0x8018, 135}, + {0x801f, 135}, + {0x8029, 135}, + {0xc038, 135}, + }, + /* 149 */ + { + {0x8003, 137}, + {0x8006, 137}, + {0x800a, 137}, + {0x800f, 137}, + {0x8018, 137}, + {0x801f, 137}, + {0x8029, 137}, + {0xc038, 137}, + {0x8003, 138}, + {0x8006, 138}, + {0x800a, 138}, + {0x800f, 138}, + {0x8018, 138}, + {0x801f, 138}, + {0x8029, 138}, + {0xc038, 138}, + }, + /* 150 */ + { + {0x8002, 139}, + {0x8009, 139}, + {0x8017, 139}, + {0xc028, 139}, + {0x8002, 140}, + {0x8009, 140}, + {0x8017, 140}, + {0xc028, 140}, + {0x8002, 141}, + {0x8009, 141}, + {0x8017, 141}, + {0xc028, 141}, + {0x8002, 143}, + {0x8009, 143}, + {0x8017, 143}, + {0xc028, 143}, + }, + /* 151 */ + { + {0x8003, 139}, + {0x8006, 139}, + {0x800a, 139}, + {0x800f, 139}, + {0x8018, 139}, + {0x801f, 139}, + {0x8029, 139}, + {0xc038, 139}, + {0x8003, 140}, + {0x8006, 140}, + {0x800a, 140}, + {0x800f, 140}, + {0x8018, 140}, + {0x801f, 140}, + {0x8029, 140}, + {0xc038, 140}, + }, + /* 152 */ + { + {0x8003, 141}, + {0x8006, 141}, + {0x800a, 141}, + {0x800f, 141}, + {0x8018, 141}, + {0x801f, 141}, + {0x8029, 141}, + {0xc038, 141}, + {0x8003, 143}, + {0x8006, 143}, + {0x800a, 143}, + {0x800f, 143}, + {0x8018, 143}, + {0x801f, 143}, + {0x8029, 143}, + {0xc038, 143}, + }, + /* 153 */ + { + {0x9d, 0}, + {0x9e, 0}, + {0xa0, 0}, + {0xa1, 0}, + {0xa4, 0}, + {0xa5, 0}, + {0xa7, 0}, + {0xa8, 0}, + {0xac, 0}, + {0xad, 0}, + {0xaf, 0}, + {0xb1, 0}, + {0xb6, 0}, + {0xb9, 0}, + {0xbf, 0}, + {0xcf, 0}, + }, + /* 154 */ + { + {0xc000, 147}, + {0xc000, 149}, + {0xc000, 150}, + {0xc000, 151}, + {0xc000, 152}, + {0xc000, 155}, + {0xc000, 157}, + {0xc000, 158}, + {0xc000, 165}, + {0xc000, 166}, + {0xc000, 168}, + {0xc000, 174}, + {0xc000, 175}, + {0xc000, 180}, + {0xc000, 182}, + {0xc000, 183}, + }, + /* 155 */ + { + {0x8001, 147}, + {0xc016, 147}, + {0x8001, 149}, + {0xc016, 149}, + {0x8001, 150}, + {0xc016, 150}, + {0x8001, 151}, + {0xc016, 151}, + {0x8001, 152}, + {0xc016, 152}, + {0x8001, 155}, + {0xc016, 155}, + {0x8001, 157}, + {0xc016, 157}, + {0x8001, 158}, + {0xc016, 158}, + }, + /* 156 */ + { + {0x8002, 147}, + {0x8009, 147}, + {0x8017, 147}, + {0xc028, 147}, + {0x8002, 149}, + {0x8009, 149}, + {0x8017, 149}, + {0xc028, 149}, + {0x8002, 150}, + {0x8009, 150}, + {0x8017, 150}, + {0xc028, 150}, + {0x8002, 151}, + {0x8009, 151}, + {0x8017, 151}, + {0xc028, 151}, + }, + /* 157 */ + { + {0x8003, 147}, + {0x8006, 147}, + {0x800a, 147}, + {0x800f, 147}, + {0x8018, 147}, + {0x801f, 147}, + {0x8029, 147}, + {0xc038, 147}, + {0x8003, 149}, + {0x8006, 149}, + {0x800a, 149}, + {0x800f, 149}, + {0x8018, 149}, + {0x801f, 149}, + {0x8029, 149}, + {0xc038, 149}, + }, + /* 158 */ + { + {0x8003, 150}, + {0x8006, 150}, + {0x800a, 150}, + {0x800f, 150}, + {0x8018, 150}, + {0x801f, 150}, + {0x8029, 150}, + {0xc038, 150}, + {0x8003, 151}, + {0x8006, 151}, + {0x800a, 151}, + {0x800f, 151}, + {0x8018, 151}, + {0x801f, 151}, + {0x8029, 151}, + {0xc038, 151}, + }, + /* 159 */ + { + {0x8002, 152}, + {0x8009, 152}, + {0x8017, 152}, + {0xc028, 152}, + {0x8002, 155}, + {0x8009, 155}, + {0x8017, 155}, + {0xc028, 155}, + {0x8002, 157}, + {0x8009, 157}, + {0x8017, 157}, + {0xc028, 157}, + {0x8002, 158}, + {0x8009, 158}, + {0x8017, 158}, + {0xc028, 158}, + }, + /* 160 */ + { + {0x8003, 152}, + {0x8006, 152}, + {0x800a, 152}, + {0x800f, 152}, + {0x8018, 152}, + {0x801f, 152}, + {0x8029, 152}, + {0xc038, 152}, + {0x8003, 155}, + {0x8006, 155}, + {0x800a, 155}, + {0x800f, 155}, + {0x8018, 155}, + {0x801f, 155}, + {0x8029, 155}, + {0xc038, 155}, + }, + /* 161 */ + { + {0x8003, 157}, + {0x8006, 157}, + {0x800a, 157}, + {0x800f, 157}, + {0x8018, 157}, + {0x801f, 157}, + {0x8029, 157}, + {0xc038, 157}, + {0x8003, 158}, + {0x8006, 158}, + {0x800a, 158}, + {0x800f, 158}, + {0x8018, 158}, + {0x801f, 158}, + {0x8029, 158}, + {0xc038, 158}, + }, + /* 162 */ + { + {0x8001, 165}, + {0xc016, 165}, + {0x8001, 166}, + {0xc016, 166}, + {0x8001, 168}, + {0xc016, 168}, + {0x8001, 174}, + {0xc016, 174}, + {0x8001, 175}, + {0xc016, 175}, + {0x8001, 180}, + {0xc016, 180}, + {0x8001, 182}, + {0xc016, 182}, + {0x8001, 183}, + {0xc016, 183}, + }, + /* 163 */ + { + {0x8002, 165}, + {0x8009, 165}, + {0x8017, 165}, + {0xc028, 165}, + {0x8002, 166}, + {0x8009, 166}, + {0x8017, 166}, + {0xc028, 166}, + {0x8002, 168}, + {0x8009, 168}, + {0x8017, 168}, + {0xc028, 168}, + {0x8002, 174}, + {0x8009, 174}, + {0x8017, 174}, + {0xc028, 174}, + }, + /* 164 */ + { + {0x8003, 165}, + {0x8006, 165}, + {0x800a, 165}, + {0x800f, 165}, + {0x8018, 165}, + {0x801f, 165}, + {0x8029, 165}, + {0xc038, 165}, + {0x8003, 166}, + {0x8006, 166}, + {0x800a, 166}, + {0x800f, 166}, + {0x8018, 166}, + {0x801f, 166}, + {0x8029, 166}, + {0xc038, 166}, + }, + /* 165 */ + { + {0x8003, 168}, + {0x8006, 168}, + {0x800a, 168}, + {0x800f, 168}, + {0x8018, 168}, + {0x801f, 168}, + {0x8029, 168}, + {0xc038, 168}, + {0x8003, 174}, + {0x8006, 174}, + {0x800a, 174}, + {0x800f, 174}, + {0x8018, 174}, + {0x801f, 174}, + {0x8029, 174}, + {0xc038, 174}, + }, + /* 166 */ + { + {0x8002, 175}, + {0x8009, 175}, + {0x8017, 175}, + {0xc028, 175}, + {0x8002, 180}, + {0x8009, 180}, + {0x8017, 180}, + {0xc028, 180}, + {0x8002, 182}, + {0x8009, 182}, + {0x8017, 182}, + {0xc028, 182}, + {0x8002, 183}, + {0x8009, 183}, + {0x8017, 183}, + {0xc028, 183}, + }, + /* 167 */ + { + {0x8003, 175}, + {0x8006, 175}, + {0x800a, 175}, + {0x800f, 175}, + {0x8018, 175}, + {0x801f, 175}, + {0x8029, 175}, + {0xc038, 175}, + {0x8003, 180}, + {0x8006, 180}, + {0x800a, 180}, + {0x800f, 180}, + {0x8018, 180}, + {0x801f, 180}, + {0x8029, 180}, + {0xc038, 180}, + }, + /* 168 */ + { + {0x8003, 182}, + {0x8006, 182}, + {0x800a, 182}, + {0x800f, 182}, + {0x8018, 182}, + {0x801f, 182}, + {0x8029, 182}, + {0xc038, 182}, + {0x8003, 183}, + {0x8006, 183}, + {0x800a, 183}, + {0x800f, 183}, + {0x8018, 183}, + {0x801f, 183}, + {0x8029, 183}, + {0xc038, 183}, + }, + /* 169 */ + { + {0xc000, 188}, + {0xc000, 191}, + {0xc000, 197}, + {0xc000, 231}, + {0xc000, 239}, + {0xb0, 0}, + {0xb2, 0}, + {0xb3, 0}, + {0xb7, 0}, + {0xb8, 0}, + {0xba, 0}, + {0xbb, 0}, + {0xc0, 0}, + {0xc7, 0}, + {0xd0, 0}, + {0xdf, 0}, + }, + /* 170 */ + { + {0x8001, 188}, + {0xc016, 188}, + {0x8001, 191}, + {0xc016, 191}, + {0x8001, 197}, + {0xc016, 197}, + {0x8001, 231}, + {0xc016, 231}, + {0x8001, 239}, + {0xc016, 239}, + {0xc000, 9}, + {0xc000, 142}, + {0xc000, 144}, + {0xc000, 145}, + {0xc000, 148}, + {0xc000, 159}, + }, + /* 171 */ + { + {0x8002, 188}, + {0x8009, 188}, + {0x8017, 188}, + {0xc028, 188}, + {0x8002, 191}, + {0x8009, 191}, + {0x8017, 191}, + {0xc028, 191}, + {0x8002, 197}, + {0x8009, 197}, + {0x8017, 197}, + {0xc028, 197}, + {0x8002, 231}, + {0x8009, 231}, + {0x8017, 231}, + {0xc028, 231}, + }, + /* 172 */ + { + {0x8003, 188}, + {0x8006, 188}, + {0x800a, 188}, + {0x800f, 188}, + {0x8018, 188}, + {0x801f, 188}, + {0x8029, 188}, + {0xc038, 188}, + {0x8003, 191}, + {0x8006, 191}, + {0x800a, 191}, + {0x800f, 191}, + {0x8018, 191}, + {0x801f, 191}, + {0x8029, 191}, + {0xc038, 191}, + }, + /* 173 */ + { + {0x8003, 197}, + {0x8006, 197}, + {0x800a, 197}, + {0x800f, 197}, + {0x8018, 197}, + {0x801f, 197}, + {0x8029, 197}, + {0xc038, 197}, + {0x8003, 231}, + {0x8006, 231}, + {0x800a, 231}, + {0x800f, 231}, + {0x8018, 231}, + {0x801f, 231}, + {0x8029, 231}, + {0xc038, 231}, + }, + /* 174 */ + { + {0x8002, 239}, + {0x8009, 239}, + {0x8017, 239}, + {0xc028, 239}, + {0x8001, 9}, + {0xc016, 9}, + {0x8001, 142}, + {0xc016, 142}, + {0x8001, 144}, + {0xc016, 144}, + {0x8001, 145}, + {0xc016, 145}, + {0x8001, 148}, + {0xc016, 148}, + {0x8001, 159}, + {0xc016, 159}, + }, + /* 175 */ + { + {0x8003, 239}, + {0x8006, 239}, + {0x800a, 239}, + {0x800f, 239}, + {0x8018, 239}, + {0x801f, 239}, + {0x8029, 239}, + {0xc038, 239}, + {0x8002, 9}, + {0x8009, 9}, + {0x8017, 9}, + {0xc028, 9}, + {0x8002, 142}, + {0x8009, 142}, + {0x8017, 142}, + {0xc028, 142}, + }, + /* 176 */ + { + {0x8003, 9}, + {0x8006, 9}, + {0x800a, 9}, + {0x800f, 9}, + {0x8018, 9}, + {0x801f, 9}, + {0x8029, 9}, + {0xc038, 9}, + {0x8003, 142}, + {0x8006, 142}, + {0x800a, 142}, + {0x800f, 142}, + {0x8018, 142}, + {0x801f, 142}, + {0x8029, 142}, + {0xc038, 142}, + }, + /* 177 */ + { + {0x8002, 144}, + {0x8009, 144}, + {0x8017, 144}, + {0xc028, 144}, + {0x8002, 145}, + {0x8009, 145}, + {0x8017, 145}, + {0xc028, 145}, + {0x8002, 148}, + {0x8009, 148}, + {0x8017, 148}, + {0xc028, 148}, + {0x8002, 159}, + {0x8009, 159}, + {0x8017, 159}, + {0xc028, 159}, + }, + /* 178 */ + { + {0x8003, 144}, + {0x8006, 144}, + {0x800a, 144}, + {0x800f, 144}, + {0x8018, 144}, + {0x801f, 144}, + {0x8029, 144}, + {0xc038, 144}, + {0x8003, 145}, + {0x8006, 145}, + {0x800a, 145}, + {0x800f, 145}, + {0x8018, 145}, + {0x801f, 145}, + {0x8029, 145}, + {0xc038, 145}, + }, + /* 179 */ + { + {0x8003, 148}, + {0x8006, 148}, + {0x800a, 148}, + {0x800f, 148}, + {0x8018, 148}, + {0x801f, 148}, + {0x8029, 148}, + {0xc038, 148}, + {0x8003, 159}, + {0x8006, 159}, + {0x800a, 159}, + {0x800f, 159}, + {0x8018, 159}, + {0x801f, 159}, + {0x8029, 159}, + {0xc038, 159}, + }, + /* 180 */ + { + {0xc000, 171}, + {0xc000, 206}, + {0xc000, 215}, + {0xc000, 225}, + {0xc000, 236}, + {0xc000, 237}, + {0xbc, 0}, + {0xbd, 0}, + {0xc1, 0}, + {0xc4, 0}, + {0xc8, 0}, + {0xcb, 0}, + {0xd1, 0}, + {0xd8, 0}, + {0xe0, 0}, + {0xee, 0}, + }, + /* 181 */ + { + {0x8001, 171}, + {0xc016, 171}, + {0x8001, 206}, + {0xc016, 206}, + {0x8001, 215}, + {0xc016, 215}, + {0x8001, 225}, + {0xc016, 225}, + {0x8001, 236}, + {0xc016, 236}, + {0x8001, 237}, + {0xc016, 237}, + {0xc000, 199}, + {0xc000, 207}, + {0xc000, 234}, + {0xc000, 235}, + }, + /* 182 */ + { + {0x8002, 171}, + {0x8009, 171}, + {0x8017, 171}, + {0xc028, 171}, + {0x8002, 206}, + {0x8009, 206}, + {0x8017, 206}, + {0xc028, 206}, + {0x8002, 215}, + {0x8009, 215}, + {0x8017, 215}, + {0xc028, 215}, + {0x8002, 225}, + {0x8009, 225}, + {0x8017, 225}, + {0xc028, 225}, + }, + /* 183 */ + { + {0x8003, 171}, + {0x8006, 171}, + {0x800a, 171}, + {0x800f, 171}, + {0x8018, 171}, + {0x801f, 171}, + {0x8029, 171}, + {0xc038, 171}, + {0x8003, 206}, + {0x8006, 206}, + {0x800a, 206}, + {0x800f, 206}, + {0x8018, 206}, + {0x801f, 206}, + {0x8029, 206}, + {0xc038, 206}, + }, + /* 184 */ + { + {0x8003, 215}, + {0x8006, 215}, + {0x800a, 215}, + {0x800f, 215}, + {0x8018, 215}, + {0x801f, 215}, + {0x8029, 215}, + {0xc038, 215}, + {0x8003, 225}, + {0x8006, 225}, + {0x800a, 225}, + {0x800f, 225}, + {0x8018, 225}, + {0x801f, 225}, + {0x8029, 225}, + {0xc038, 225}, + }, + /* 185 */ + { + {0x8002, 236}, + {0x8009, 236}, + {0x8017, 236}, + {0xc028, 236}, + {0x8002, 237}, + {0x8009, 237}, + {0x8017, 237}, + {0xc028, 237}, + {0x8001, 199}, + {0xc016, 199}, + {0x8001, 207}, + {0xc016, 207}, + {0x8001, 234}, + {0xc016, 234}, + {0x8001, 235}, + {0xc016, 235}, + }, + /* 186 */ + { + {0x8003, 236}, + {0x8006, 236}, + {0x800a, 236}, + {0x800f, 236}, + {0x8018, 236}, + {0x801f, 236}, + {0x8029, 236}, + {0xc038, 236}, + {0x8003, 237}, + {0x8006, 237}, + {0x800a, 237}, + {0x800f, 237}, + {0x8018, 237}, + {0x801f, 237}, + {0x8029, 237}, + {0xc038, 237}, + }, + /* 187 */ + { + {0x8002, 199}, + {0x8009, 199}, + {0x8017, 199}, + {0xc028, 199}, + {0x8002, 207}, + {0x8009, 207}, + {0x8017, 207}, + {0xc028, 207}, + {0x8002, 234}, + {0x8009, 234}, + {0x8017, 234}, + {0xc028, 234}, + {0x8002, 235}, + {0x8009, 235}, + {0x8017, 235}, + {0xc028, 235}, + }, + /* 188 */ + { + {0x8003, 199}, + {0x8006, 199}, + {0x800a, 199}, + {0x800f, 199}, + {0x8018, 199}, + {0x801f, 199}, + {0x8029, 199}, + {0xc038, 199}, + {0x8003, 207}, + {0x8006, 207}, + {0x800a, 207}, + {0x800f, 207}, + {0x8018, 207}, + {0x801f, 207}, + {0x8029, 207}, + {0xc038, 207}, + }, + /* 189 */ + { + {0x8003, 234}, + {0x8006, 234}, + {0x800a, 234}, + {0x800f, 234}, + {0x8018, 234}, + {0x801f, 234}, + {0x8029, 234}, + {0xc038, 234}, + {0x8003, 235}, + {0x8006, 235}, + {0x800a, 235}, + {0x800f, 235}, + {0x8018, 235}, + {0x801f, 235}, + {0x8029, 235}, + {0xc038, 235}, + }, + /* 190 */ + { + {0xc2, 0}, + {0xc3, 0}, + {0xc5, 0}, + {0xc6, 0}, + {0xc9, 0}, + {0xca, 0}, + {0xcc, 0}, + {0xcd, 0}, + {0xd2, 0}, + {0xd5, 0}, + {0xd9, 0}, + {0xdc, 0}, + {0xe1, 0}, + {0xe7, 0}, + {0xef, 0}, + {0xf6, 0}, + }, + /* 191 */ + { + {0xc000, 192}, + {0xc000, 193}, + {0xc000, 200}, + {0xc000, 201}, + {0xc000, 202}, + {0xc000, 205}, + {0xc000, 210}, + {0xc000, 213}, + {0xc000, 218}, + {0xc000, 219}, + {0xc000, 238}, + {0xc000, 240}, + {0xc000, 242}, + {0xc000, 243}, + {0xc000, 255}, + {0xce, 0}, + }, + /* 192 */ + { + {0x8001, 192}, + {0xc016, 192}, + {0x8001, 193}, + {0xc016, 193}, + {0x8001, 200}, + {0xc016, 200}, + {0x8001, 201}, + {0xc016, 201}, + {0x8001, 202}, + {0xc016, 202}, + {0x8001, 205}, + {0xc016, 205}, + {0x8001, 210}, + {0xc016, 210}, + {0x8001, 213}, + {0xc016, 213}, + }, + /* 193 */ + { + {0x8002, 192}, + {0x8009, 192}, + {0x8017, 192}, + {0xc028, 192}, + {0x8002, 193}, + {0x8009, 193}, + {0x8017, 193}, + {0xc028, 193}, + {0x8002, 200}, + {0x8009, 200}, + {0x8017, 200}, + {0xc028, 200}, + {0x8002, 201}, + {0x8009, 201}, + {0x8017, 201}, + {0xc028, 201}, + }, + /* 194 */ + { + {0x8003, 192}, + {0x8006, 192}, + {0x800a, 192}, + {0x800f, 192}, + {0x8018, 192}, + {0x801f, 192}, + {0x8029, 192}, + {0xc038, 192}, + {0x8003, 193}, + {0x8006, 193}, + {0x800a, 193}, + {0x800f, 193}, + {0x8018, 193}, + {0x801f, 193}, + {0x8029, 193}, + {0xc038, 193}, + }, + /* 195 */ + { + {0x8003, 200}, + {0x8006, 200}, + {0x800a, 200}, + {0x800f, 200}, + {0x8018, 200}, + {0x801f, 200}, + {0x8029, 200}, + {0xc038, 200}, + {0x8003, 201}, + {0x8006, 201}, + {0x800a, 201}, + {0x800f, 201}, + {0x8018, 201}, + {0x801f, 201}, + {0x8029, 201}, + {0xc038, 201}, + }, + /* 196 */ + { + {0x8002, 202}, + {0x8009, 202}, + {0x8017, 202}, + {0xc028, 202}, + {0x8002, 205}, + {0x8009, 205}, + {0x8017, 205}, + {0xc028, 205}, + {0x8002, 210}, + {0x8009, 210}, + {0x8017, 210}, + {0xc028, 210}, + {0x8002, 213}, + {0x8009, 213}, + {0x8017, 213}, + {0xc028, 213}, + }, + /* 197 */ + { + {0x8003, 202}, + {0x8006, 202}, + {0x800a, 202}, + {0x800f, 202}, + {0x8018, 202}, + {0x801f, 202}, + {0x8029, 202}, + {0xc038, 202}, + {0x8003, 205}, + {0x8006, 205}, + {0x800a, 205}, + {0x800f, 205}, + {0x8018, 205}, + {0x801f, 205}, + {0x8029, 205}, + {0xc038, 205}, + }, + /* 198 */ + { + {0x8003, 210}, + {0x8006, 210}, + {0x800a, 210}, + {0x800f, 210}, + {0x8018, 210}, + {0x801f, 210}, + {0x8029, 210}, + {0xc038, 210}, + {0x8003, 213}, + {0x8006, 213}, + {0x800a, 213}, + {0x800f, 213}, + {0x8018, 213}, + {0x801f, 213}, + {0x8029, 213}, + {0xc038, 213}, + }, + /* 199 */ + { + {0x8001, 218}, + {0xc016, 218}, + {0x8001, 219}, + {0xc016, 219}, + {0x8001, 238}, + {0xc016, 238}, + {0x8001, 240}, + {0xc016, 240}, + {0x8001, 242}, + {0xc016, 242}, + {0x8001, 243}, + {0xc016, 243}, + {0x8001, 255}, + {0xc016, 255}, + {0xc000, 203}, + {0xc000, 204}, + }, + /* 200 */ + { + {0x8002, 218}, + {0x8009, 218}, + {0x8017, 218}, + {0xc028, 218}, + {0x8002, 219}, + {0x8009, 219}, + {0x8017, 219}, + {0xc028, 219}, + {0x8002, 238}, + {0x8009, 238}, + {0x8017, 238}, + {0xc028, 238}, + {0x8002, 240}, + {0x8009, 240}, + {0x8017, 240}, + {0xc028, 240}, + }, + /* 201 */ + { + {0x8003, 218}, + {0x8006, 218}, + {0x800a, 218}, + {0x800f, 218}, + {0x8018, 218}, + {0x801f, 218}, + {0x8029, 218}, + {0xc038, 218}, + {0x8003, 219}, + {0x8006, 219}, + {0x800a, 219}, + {0x800f, 219}, + {0x8018, 219}, + {0x801f, 219}, + {0x8029, 219}, + {0xc038, 219}, + }, + /* 202 */ + { + {0x8003, 238}, + {0x8006, 238}, + {0x800a, 238}, + {0x800f, 238}, + {0x8018, 238}, + {0x801f, 238}, + {0x8029, 238}, + {0xc038, 238}, + {0x8003, 240}, + {0x8006, 240}, + {0x800a, 240}, + {0x800f, 240}, + {0x8018, 240}, + {0x801f, 240}, + {0x8029, 240}, + {0xc038, 240}, + }, + /* 203 */ + { + {0x8002, 242}, + {0x8009, 242}, + {0x8017, 242}, + {0xc028, 242}, + {0x8002, 243}, + {0x8009, 243}, + {0x8017, 243}, + {0xc028, 243}, + {0x8002, 255}, + {0x8009, 255}, + {0x8017, 255}, + {0xc028, 255}, + {0x8001, 203}, + {0xc016, 203}, + {0x8001, 204}, + {0xc016, 204}, + }, + /* 204 */ + { + {0x8003, 242}, + {0x8006, 242}, + {0x800a, 242}, + {0x800f, 242}, + {0x8018, 242}, + {0x801f, 242}, + {0x8029, 242}, + {0xc038, 242}, + {0x8003, 243}, + {0x8006, 243}, + {0x800a, 243}, + {0x800f, 243}, + {0x8018, 243}, + {0x801f, 243}, + {0x8029, 243}, + {0xc038, 243}, + }, + /* 205 */ + { + {0x8003, 255}, + {0x8006, 255}, + {0x800a, 255}, + {0x800f, 255}, + {0x8018, 255}, + {0x801f, 255}, + {0x8029, 255}, + {0xc038, 255}, + {0x8002, 203}, + {0x8009, 203}, + {0x8017, 203}, + {0xc028, 203}, + {0x8002, 204}, + {0x8009, 204}, + {0x8017, 204}, + {0xc028, 204}, + }, + /* 206 */ + { + {0x8003, 203}, + {0x8006, 203}, + {0x800a, 203}, + {0x800f, 203}, + {0x8018, 203}, + {0x801f, 203}, + {0x8029, 203}, + {0xc038, 203}, + {0x8003, 204}, + {0x8006, 204}, + {0x800a, 204}, + {0x800f, 204}, + {0x8018, 204}, + {0x801f, 204}, + {0x8029, 204}, + {0xc038, 204}, + }, + /* 207 */ + { + {0xd3, 0}, + {0xd4, 0}, + {0xd6, 0}, + {0xd7, 0}, + {0xda, 0}, + {0xdb, 0}, + {0xdd, 0}, + {0xde, 0}, + {0xe2, 0}, + {0xe4, 0}, + {0xe8, 0}, + {0xeb, 0}, + {0xf0, 0}, + {0xf3, 0}, + {0xf7, 0}, + {0xfa, 0}, + }, + /* 208 */ + { + {0xc000, 211}, + {0xc000, 212}, + {0xc000, 214}, + {0xc000, 221}, + {0xc000, 222}, + {0xc000, 223}, + {0xc000, 241}, + {0xc000, 244}, + {0xc000, 245}, + {0xc000, 246}, + {0xc000, 247}, + {0xc000, 248}, + {0xc000, 250}, + {0xc000, 251}, + {0xc000, 252}, + {0xc000, 253}, + }, + /* 209 */ + { + {0x8001, 211}, + {0xc016, 211}, + {0x8001, 212}, + {0xc016, 212}, + {0x8001, 214}, + {0xc016, 214}, + {0x8001, 221}, + {0xc016, 221}, + {0x8001, 222}, + {0xc016, 222}, + {0x8001, 223}, + {0xc016, 223}, + {0x8001, 241}, + {0xc016, 241}, + {0x8001, 244}, + {0xc016, 244}, + }, + /* 210 */ + { + {0x8002, 211}, + {0x8009, 211}, + {0x8017, 211}, + {0xc028, 211}, + {0x8002, 212}, + {0x8009, 212}, + {0x8017, 212}, + {0xc028, 212}, + {0x8002, 214}, + {0x8009, 214}, + {0x8017, 214}, + {0xc028, 214}, + {0x8002, 221}, + {0x8009, 221}, + {0x8017, 221}, + {0xc028, 221}, + }, + /* 211 */ + { + {0x8003, 211}, + {0x8006, 211}, + {0x800a, 211}, + {0x800f, 211}, + {0x8018, 211}, + {0x801f, 211}, + {0x8029, 211}, + {0xc038, 211}, + {0x8003, 212}, + {0x8006, 212}, + {0x800a, 212}, + {0x800f, 212}, + {0x8018, 212}, + {0x801f, 212}, + {0x8029, 212}, + {0xc038, 212}, + }, + /* 212 */ + { + {0x8003, 214}, + {0x8006, 214}, + {0x800a, 214}, + {0x800f, 214}, + {0x8018, 214}, + {0x801f, 214}, + {0x8029, 214}, + {0xc038, 214}, + {0x8003, 221}, + {0x8006, 221}, + {0x800a, 221}, + {0x800f, 221}, + {0x8018, 221}, + {0x801f, 221}, + {0x8029, 221}, + {0xc038, 221}, + }, + /* 213 */ + { + {0x8002, 222}, + {0x8009, 222}, + {0x8017, 222}, + {0xc028, 222}, + {0x8002, 223}, + {0x8009, 223}, + {0x8017, 223}, + {0xc028, 223}, + {0x8002, 241}, + {0x8009, 241}, + {0x8017, 241}, + {0xc028, 241}, + {0x8002, 244}, + {0x8009, 244}, + {0x8017, 244}, + {0xc028, 244}, + }, + /* 214 */ + { + {0x8003, 222}, + {0x8006, 222}, + {0x800a, 222}, + {0x800f, 222}, + {0x8018, 222}, + {0x801f, 222}, + {0x8029, 222}, + {0xc038, 222}, + {0x8003, 223}, + {0x8006, 223}, + {0x800a, 223}, + {0x800f, 223}, + {0x8018, 223}, + {0x801f, 223}, + {0x8029, 223}, + {0xc038, 223}, + }, + /* 215 */ + { + {0x8003, 241}, + {0x8006, 241}, + {0x800a, 241}, + {0x800f, 241}, + {0x8018, 241}, + {0x801f, 241}, + {0x8029, 241}, + {0xc038, 241}, + {0x8003, 244}, + {0x8006, 244}, + {0x800a, 244}, + {0x800f, 244}, + {0x8018, 244}, + {0x801f, 244}, + {0x8029, 244}, + {0xc038, 244}, + }, + /* 216 */ + { + {0x8001, 245}, + {0xc016, 245}, + {0x8001, 246}, + {0xc016, 246}, + {0x8001, 247}, + {0xc016, 247}, + {0x8001, 248}, + {0xc016, 248}, + {0x8001, 250}, + {0xc016, 250}, + {0x8001, 251}, + {0xc016, 251}, + {0x8001, 252}, + {0xc016, 252}, + {0x8001, 253}, + {0xc016, 253}, + }, + /* 217 */ + { + {0x8002, 245}, + {0x8009, 245}, + {0x8017, 245}, + {0xc028, 245}, + {0x8002, 246}, + {0x8009, 246}, + {0x8017, 246}, + {0xc028, 246}, + {0x8002, 247}, + {0x8009, 247}, + {0x8017, 247}, + {0xc028, 247}, + {0x8002, 248}, + {0x8009, 248}, + {0x8017, 248}, + {0xc028, 248}, + }, + /* 218 */ + { + {0x8003, 245}, + {0x8006, 245}, + {0x800a, 245}, + {0x800f, 245}, + {0x8018, 245}, + {0x801f, 245}, + {0x8029, 245}, + {0xc038, 245}, + {0x8003, 246}, + {0x8006, 246}, + {0x800a, 246}, + {0x800f, 246}, + {0x8018, 246}, + {0x801f, 246}, + {0x8029, 246}, + {0xc038, 246}, + }, + /* 219 */ + { + {0x8003, 247}, + {0x8006, 247}, + {0x800a, 247}, + {0x800f, 247}, + {0x8018, 247}, + {0x801f, 247}, + {0x8029, 247}, + {0xc038, 247}, + {0x8003, 248}, + {0x8006, 248}, + {0x800a, 248}, + {0x800f, 248}, + {0x8018, 248}, + {0x801f, 248}, + {0x8029, 248}, + {0xc038, 248}, + }, + /* 220 */ + { + {0x8002, 250}, + {0x8009, 250}, + {0x8017, 250}, + {0xc028, 250}, + {0x8002, 251}, + {0x8009, 251}, + {0x8017, 251}, + {0xc028, 251}, + {0x8002, 252}, + {0x8009, 252}, + {0x8017, 252}, + {0xc028, 252}, + {0x8002, 253}, + {0x8009, 253}, + {0x8017, 253}, + {0xc028, 253}, + }, + /* 221 */ + { + {0x8003, 250}, + {0x8006, 250}, + {0x800a, 250}, + {0x800f, 250}, + {0x8018, 250}, + {0x801f, 250}, + {0x8029, 250}, + {0xc038, 250}, + {0x8003, 251}, + {0x8006, 251}, + {0x800a, 251}, + {0x800f, 251}, + {0x8018, 251}, + {0x801f, 251}, + {0x8029, 251}, + {0xc038, 251}, + }, + /* 222 */ + { + {0x8003, 252}, + {0x8006, 252}, + {0x800a, 252}, + {0x800f, 252}, + {0x8018, 252}, + {0x801f, 252}, + {0x8029, 252}, + {0xc038, 252}, + {0x8003, 253}, + {0x8006, 253}, + {0x800a, 253}, + {0x800f, 253}, + {0x8018, 253}, + {0x801f, 253}, + {0x8029, 253}, + {0xc038, 253}, + }, + /* 223 */ + { + {0xc000, 254}, + {0xe3, 0}, + {0xe5, 0}, + {0xe6, 0}, + {0xe9, 0}, + {0xea, 0}, + {0xec, 0}, + {0xed, 0}, + {0xf1, 0}, + {0xf2, 0}, + {0xf4, 0}, + {0xf5, 0}, + {0xf8, 0}, + {0xf9, 0}, + {0xfb, 0}, + {0xfc, 0}, + }, + /* 224 */ + { + {0x8001, 254}, + {0xc016, 254}, + {0xc000, 2}, + {0xc000, 3}, + {0xc000, 4}, + {0xc000, 5}, + {0xc000, 6}, + {0xc000, 7}, + {0xc000, 8}, + {0xc000, 11}, + {0xc000, 12}, + {0xc000, 14}, + {0xc000, 15}, + {0xc000, 16}, + {0xc000, 17}, + {0xc000, 18}, + }, + /* 225 */ + { + {0x8002, 254}, + {0x8009, 254}, + {0x8017, 254}, + {0xc028, 254}, + {0x8001, 2}, + {0xc016, 2}, + {0x8001, 3}, + {0xc016, 3}, + {0x8001, 4}, + {0xc016, 4}, + {0x8001, 5}, + {0xc016, 5}, + {0x8001, 6}, + {0xc016, 6}, + {0x8001, 7}, + {0xc016, 7}, + }, + /* 226 */ + { + {0x8003, 254}, + {0x8006, 254}, + {0x800a, 254}, + {0x800f, 254}, + {0x8018, 254}, + {0x801f, 254}, + {0x8029, 254}, + {0xc038, 254}, + {0x8002, 2}, + {0x8009, 2}, + {0x8017, 2}, + {0xc028, 2}, + {0x8002, 3}, + {0x8009, 3}, + {0x8017, 3}, + {0xc028, 3}, + }, + /* 227 */ + { + {0x8003, 2}, + {0x8006, 2}, + {0x800a, 2}, + {0x800f, 2}, + {0x8018, 2}, + {0x801f, 2}, + {0x8029, 2}, + {0xc038, 2}, + {0x8003, 3}, + {0x8006, 3}, + {0x800a, 3}, + {0x800f, 3}, + {0x8018, 3}, + {0x801f, 3}, + {0x8029, 3}, + {0xc038, 3}, + }, + /* 228 */ + { + {0x8002, 4}, + {0x8009, 4}, + {0x8017, 4}, + {0xc028, 4}, + {0x8002, 5}, + {0x8009, 5}, + {0x8017, 5}, + {0xc028, 5}, + {0x8002, 6}, + {0x8009, 6}, + {0x8017, 6}, + {0xc028, 6}, + {0x8002, 7}, + {0x8009, 7}, + {0x8017, 7}, + {0xc028, 7}, + }, + /* 229 */ + { + {0x8003, 4}, + {0x8006, 4}, + {0x800a, 4}, + {0x800f, 4}, + {0x8018, 4}, + {0x801f, 4}, + {0x8029, 4}, + {0xc038, 4}, + {0x8003, 5}, + {0x8006, 5}, + {0x800a, 5}, + {0x800f, 5}, + {0x8018, 5}, + {0x801f, 5}, + {0x8029, 5}, + {0xc038, 5}, + }, + /* 230 */ + { + {0x8003, 6}, + {0x8006, 6}, + {0x800a, 6}, + {0x800f, 6}, + {0x8018, 6}, + {0x801f, 6}, + {0x8029, 6}, + {0xc038, 6}, + {0x8003, 7}, + {0x8006, 7}, + {0x800a, 7}, + {0x800f, 7}, + {0x8018, 7}, + {0x801f, 7}, + {0x8029, 7}, + {0xc038, 7}, + }, + /* 231 */ + { + {0x8001, 8}, + {0xc016, 8}, + {0x8001, 11}, + {0xc016, 11}, + {0x8001, 12}, + {0xc016, 12}, + {0x8001, 14}, + {0xc016, 14}, + {0x8001, 15}, + {0xc016, 15}, + {0x8001, 16}, + {0xc016, 16}, + {0x8001, 17}, + {0xc016, 17}, + {0x8001, 18}, + {0xc016, 18}, + }, + /* 232 */ + { + {0x8002, 8}, + {0x8009, 8}, + {0x8017, 8}, + {0xc028, 8}, + {0x8002, 11}, + {0x8009, 11}, + {0x8017, 11}, + {0xc028, 11}, + {0x8002, 12}, + {0x8009, 12}, + {0x8017, 12}, + {0xc028, 12}, + {0x8002, 14}, + {0x8009, 14}, + {0x8017, 14}, + {0xc028, 14}, + }, + /* 233 */ + { + {0x8003, 8}, + {0x8006, 8}, + {0x800a, 8}, + {0x800f, 8}, + {0x8018, 8}, + {0x801f, 8}, + {0x8029, 8}, + {0xc038, 8}, + {0x8003, 11}, + {0x8006, 11}, + {0x800a, 11}, + {0x800f, 11}, + {0x8018, 11}, + {0x801f, 11}, + {0x8029, 11}, + {0xc038, 11}, + }, + /* 234 */ + { + {0x8003, 12}, + {0x8006, 12}, + {0x800a, 12}, + {0x800f, 12}, + {0x8018, 12}, + {0x801f, 12}, + {0x8029, 12}, + {0xc038, 12}, + {0x8003, 14}, + {0x8006, 14}, + {0x800a, 14}, + {0x800f, 14}, + {0x8018, 14}, + {0x801f, 14}, + {0x8029, 14}, + {0xc038, 14}, + }, + /* 235 */ + { + {0x8002, 15}, + {0x8009, 15}, + {0x8017, 15}, + {0xc028, 15}, + {0x8002, 16}, + {0x8009, 16}, + {0x8017, 16}, + {0xc028, 16}, + {0x8002, 17}, + {0x8009, 17}, + {0x8017, 17}, + {0xc028, 17}, + {0x8002, 18}, + {0x8009, 18}, + {0x8017, 18}, + {0xc028, 18}, + }, + /* 236 */ + { + {0x8003, 15}, + {0x8006, 15}, + {0x800a, 15}, + {0x800f, 15}, + {0x8018, 15}, + {0x801f, 15}, + {0x8029, 15}, + {0xc038, 15}, + {0x8003, 16}, + {0x8006, 16}, + {0x800a, 16}, + {0x800f, 16}, + {0x8018, 16}, + {0x801f, 16}, + {0x8029, 16}, + {0xc038, 16}, + }, + /* 237 */ + { + {0x8003, 17}, + {0x8006, 17}, + {0x800a, 17}, + {0x800f, 17}, + {0x8018, 17}, + {0x801f, 17}, + {0x8029, 17}, + {0xc038, 17}, + {0x8003, 18}, + {0x8006, 18}, + {0x800a, 18}, + {0x800f, 18}, + {0x8018, 18}, + {0x801f, 18}, + {0x8029, 18}, + {0xc038, 18}, + }, + /* 238 */ + { + {0xc000, 19}, + {0xc000, 20}, + {0xc000, 21}, + {0xc000, 23}, + {0xc000, 24}, + {0xc000, 25}, + {0xc000, 26}, + {0xc000, 27}, + {0xc000, 28}, + {0xc000, 29}, + {0xc000, 30}, + {0xc000, 31}, + {0xc000, 127}, + {0xc000, 220}, + {0xc000, 249}, + {0xfd, 0}, + }, + /* 239 */ + { + {0x8001, 19}, + {0xc016, 19}, + {0x8001, 20}, + {0xc016, 20}, + {0x8001, 21}, + {0xc016, 21}, + {0x8001, 23}, + {0xc016, 23}, + {0x8001, 24}, + {0xc016, 24}, + {0x8001, 25}, + {0xc016, 25}, + {0x8001, 26}, + {0xc016, 26}, + {0x8001, 27}, + {0xc016, 27}, + }, + /* 240 */ + { + {0x8002, 19}, + {0x8009, 19}, + {0x8017, 19}, + {0xc028, 19}, + {0x8002, 20}, + {0x8009, 20}, + {0x8017, 20}, + {0xc028, 20}, + {0x8002, 21}, + {0x8009, 21}, + {0x8017, 21}, + {0xc028, 21}, + {0x8002, 23}, + {0x8009, 23}, + {0x8017, 23}, + {0xc028, 23}, + }, + /* 241 */ + { + {0x8003, 19}, + {0x8006, 19}, + {0x800a, 19}, + {0x800f, 19}, + {0x8018, 19}, + {0x801f, 19}, + {0x8029, 19}, + {0xc038, 19}, + {0x8003, 20}, + {0x8006, 20}, + {0x800a, 20}, + {0x800f, 20}, + {0x8018, 20}, + {0x801f, 20}, + {0x8029, 20}, + {0xc038, 20}, + }, + /* 242 */ + { + {0x8003, 21}, + {0x8006, 21}, + {0x800a, 21}, + {0x800f, 21}, + {0x8018, 21}, + {0x801f, 21}, + {0x8029, 21}, + {0xc038, 21}, + {0x8003, 23}, + {0x8006, 23}, + {0x800a, 23}, + {0x800f, 23}, + {0x8018, 23}, + {0x801f, 23}, + {0x8029, 23}, + {0xc038, 23}, + }, + /* 243 */ + { + {0x8002, 24}, + {0x8009, 24}, + {0x8017, 24}, + {0xc028, 24}, + {0x8002, 25}, + {0x8009, 25}, + {0x8017, 25}, + {0xc028, 25}, + {0x8002, 26}, + {0x8009, 26}, + {0x8017, 26}, + {0xc028, 26}, + {0x8002, 27}, + {0x8009, 27}, + {0x8017, 27}, + {0xc028, 27}, + }, + /* 244 */ + { + {0x8003, 24}, + {0x8006, 24}, + {0x800a, 24}, + {0x800f, 24}, + {0x8018, 24}, + {0x801f, 24}, + {0x8029, 24}, + {0xc038, 24}, + {0x8003, 25}, + {0x8006, 25}, + {0x800a, 25}, + {0x800f, 25}, + {0x8018, 25}, + {0x801f, 25}, + {0x8029, 25}, + {0xc038, 25}, + }, + /* 245 */ + { + {0x8003, 26}, + {0x8006, 26}, + {0x800a, 26}, + {0x800f, 26}, + {0x8018, 26}, + {0x801f, 26}, + {0x8029, 26}, + {0xc038, 26}, + {0x8003, 27}, + {0x8006, 27}, + {0x800a, 27}, + {0x800f, 27}, + {0x8018, 27}, + {0x801f, 27}, + {0x8029, 27}, + {0xc038, 27}, + }, + /* 246 */ + { + {0x8001, 28}, + {0xc016, 28}, + {0x8001, 29}, + {0xc016, 29}, + {0x8001, 30}, + {0xc016, 30}, + {0x8001, 31}, + {0xc016, 31}, + {0x8001, 127}, + {0xc016, 127}, + {0x8001, 220}, + {0xc016, 220}, + {0x8001, 249}, + {0xc016, 249}, + {0xfe, 0}, + {0xff, 0}, + }, + /* 247 */ + { + {0x8002, 28}, + {0x8009, 28}, + {0x8017, 28}, + {0xc028, 28}, + {0x8002, 29}, + {0x8009, 29}, + {0x8017, 29}, + {0xc028, 29}, + {0x8002, 30}, + {0x8009, 30}, + {0x8017, 30}, + {0xc028, 30}, + {0x8002, 31}, + {0x8009, 31}, + {0x8017, 31}, + {0xc028, 31}, + }, + /* 248 */ + { + {0x8003, 28}, + {0x8006, 28}, + {0x800a, 28}, + {0x800f, 28}, + {0x8018, 28}, + {0x801f, 28}, + {0x8029, 28}, + {0xc038, 28}, + {0x8003, 29}, + {0x8006, 29}, + {0x800a, 29}, + {0x800f, 29}, + {0x8018, 29}, + {0x801f, 29}, + {0x8029, 29}, + {0xc038, 29}, + }, + /* 249 */ + { + {0x8003, 30}, + {0x8006, 30}, + {0x800a, 30}, + {0x800f, 30}, + {0x8018, 30}, + {0x801f, 30}, + {0x8029, 30}, + {0xc038, 30}, + {0x8003, 31}, + {0x8006, 31}, + {0x800a, 31}, + {0x800f, 31}, + {0x8018, 31}, + {0x801f, 31}, + {0x8029, 31}, + {0xc038, 31}, + }, + /* 250 */ + { + {0x8002, 127}, + {0x8009, 127}, + {0x8017, 127}, + {0xc028, 127}, + {0x8002, 220}, + {0x8009, 220}, + {0x8017, 220}, + {0xc028, 220}, + {0x8002, 249}, + {0x8009, 249}, + {0x8017, 249}, + {0xc028, 249}, + {0xc000, 10}, + {0xc000, 13}, + {0xc000, 22}, + {0x100, 0}, + }, + /* 251 */ + { + {0x8003, 127}, + {0x8006, 127}, + {0x800a, 127}, + {0x800f, 127}, + {0x8018, 127}, + {0x801f, 127}, + {0x8029, 127}, + {0xc038, 127}, + {0x8003, 220}, + {0x8006, 220}, + {0x800a, 220}, + {0x800f, 220}, + {0x8018, 220}, + {0x801f, 220}, + {0x8029, 220}, + {0xc038, 220}, + }, + /* 252 */ + { + {0x8003, 249}, + {0x8006, 249}, + {0x800a, 249}, + {0x800f, 249}, + {0x8018, 249}, + {0x801f, 249}, + {0x8029, 249}, + {0xc038, 249}, + {0x8001, 10}, + {0xc016, 10}, + {0x8001, 13}, + {0xc016, 13}, + {0x8001, 22}, + {0xc016, 22}, + {0x100, 0}, + {0x100, 0}, + }, + /* 253 */ + { + {0x8002, 10}, + {0x8009, 10}, + {0x8017, 10}, + {0xc028, 10}, + {0x8002, 13}, + {0x8009, 13}, + {0x8017, 13}, + {0xc028, 13}, + {0x8002, 22}, + {0x8009, 22}, + {0x8017, 22}, + {0xc028, 22}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + }, + /* 254 */ + { + {0x8003, 10}, + {0x8006, 10}, + {0x800a, 10}, + {0x800f, 10}, + {0x8018, 10}, + {0x801f, 10}, + {0x8029, 10}, + {0xc038, 10}, + {0x8003, 13}, + {0x8006, 13}, + {0x800a, 13}, + {0x800f, 13}, + {0x8018, 13}, + {0x801f, 13}, + {0x8029, 13}, + {0xc038, 13}, + }, + /* 255 */ + { + {0x8003, 22}, + {0x8006, 22}, + {0x800a, 22}, + {0x800f, 22}, + {0x8018, 22}, + {0x801f, 22}, + {0x8029, 22}, + {0xc038, 22}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + }, + /* 256 */ + { + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + {0x100, 0}, + }, +}; diff --git a/contrib/libs/nghttp3/lib/nghttp3_range.c b/contrib/libs/nghttp3/lib/nghttp3_range.c new file mode 100644 index 0000000000..af810a2c59 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_range.c @@ -0,0 +1,64 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_range.h" +#include "nghttp3_macro.h" + +void nghttp3_range_init(nghttp3_range *r, uint64_t begin, uint64_t end) { + r->begin = begin; + r->end = end; +} + +nghttp3_range nghttp3_range_intersect(const nghttp3_range *a, + const nghttp3_range *b) { + nghttp3_range r = {0, 0}; + uint64_t begin = nghttp3_max_uint64(a->begin, b->begin); + uint64_t end = nghttp3_min_uint64(a->end, b->end); + + if (begin < end) { + nghttp3_range_init(&r, begin, end); + } + + return r; +} + +uint64_t nghttp3_range_len(const nghttp3_range *r) { return r->end - r->begin; } + +int nghttp3_range_eq(const nghttp3_range *a, const nghttp3_range *b) { + return a->begin == b->begin && a->end == b->end; +} + +void nghttp3_range_cut(nghttp3_range *left, nghttp3_range *right, + const nghttp3_range *a, const nghttp3_range *b) { + /* Assume that b is included in a */ + left->begin = a->begin; + left->end = b->begin; + right->begin = b->end; + right->end = a->end; +} + +int nghttp3_range_not_after(const nghttp3_range *a, const nghttp3_range *b) { + return a->end <= b->end; +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_range.h b/contrib/libs/nghttp3/lib/nghttp3_range.h new file mode 100644 index 0000000000..e52e1966b8 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_range.h @@ -0,0 +1,81 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_RANGE_H +#define NGHTTP3_RANGE_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +/* + * nghttp3_range represents half-closed range [begin, end). + */ +typedef struct nghttp3_range { + uint64_t begin; + uint64_t end; +} nghttp3_range; + +/* + * nghttp3_range_init initializes |r| with the range [|begin|, |end|). + */ +void nghttp3_range_init(nghttp3_range *r, uint64_t begin, uint64_t end); + +/* + * nghttp3_range_intersect returns the intersection of |a| and |b|. + * If they do not overlap, it returns empty range. + */ +nghttp3_range nghttp3_range_intersect(const nghttp3_range *a, + const nghttp3_range *b); + +/* + * nghttp3_range_len returns the length of |r|. + */ +uint64_t nghttp3_range_len(const nghttp3_range *r); + +/* + * nghttp3_range_eq returns nonzero if |a| equals |b|, such that + * a->begin == b->begin and a->end == b->end hold. + */ +int nghttp3_range_eq(const nghttp3_range *a, const nghttp3_range *b); + +/* + * nghttp3_range_cut returns the left and right range after removing + * |b| from |a|. This function assumes that |a| completely includes + * |b|. In other words, a->begin <= b->begin and b->end <= a->end + * hold. + */ +void nghttp3_range_cut(nghttp3_range *left, nghttp3_range *right, + const nghttp3_range *a, const nghttp3_range *b); + +/* + * nghttp3_range_not_after returns nonzero if the right edge of |a| + * does not go beyond of the right edge of |b|. + */ +int nghttp3_range_not_after(const nghttp3_range *a, const nghttp3_range *b); + +#endif /* !defined(NGHTTP3_RANGE_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_rcbuf.c b/contrib/libs/nghttp3/lib/nghttp3_rcbuf.c new file mode 100644 index 0000000000..9e9dab5139 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_rcbuf.c @@ -0,0 +1,108 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2016 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_rcbuf.h" + +#include <assert.h> + +#include "nghttp3_mem.h" +#include "nghttp3_str.h" + +int nghttp3_rcbuf_new(nghttp3_rcbuf **rcbuf_ptr, size_t size, + const nghttp3_mem *mem) { + uint8_t *p; + + p = nghttp3_mem_malloc(mem, sizeof(nghttp3_rcbuf) + size); + if (p == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + *rcbuf_ptr = (void *)p; + + (*rcbuf_ptr)->mem = mem; + (*rcbuf_ptr)->base = p + sizeof(nghttp3_rcbuf); + (*rcbuf_ptr)->len = size; + (*rcbuf_ptr)->ref = 1; + + return 0; +} + +int nghttp3_rcbuf_new2(nghttp3_rcbuf **rcbuf_ptr, const uint8_t *src, + size_t srclen, const nghttp3_mem *mem) { + int rv; + uint8_t *p; + + rv = nghttp3_rcbuf_new(rcbuf_ptr, srclen + 1, mem); + if (rv != 0) { + return rv; + } + + (*rcbuf_ptr)->len = srclen; + p = (*rcbuf_ptr)->base; + + if (srclen) { + p = nghttp3_cpymem(p, src, srclen); + } + + *p = '\0'; + + return 0; +} + +/* + * Frees |rcbuf| itself, regardless of its reference cout. + */ +void nghttp3_rcbuf_del(nghttp3_rcbuf *rcbuf) { + nghttp3_mem_free(rcbuf->mem, rcbuf); +} + +void nghttp3_rcbuf_incref(nghttp3_rcbuf *rcbuf) { + if (rcbuf->ref == -1) { + return; + } + + ++rcbuf->ref; +} + +void nghttp3_rcbuf_decref(nghttp3_rcbuf *rcbuf) { + if (rcbuf == NULL || rcbuf->ref == -1) { + return; + } + + assert(rcbuf->ref > 0); + + if (--rcbuf->ref == 0) { + nghttp3_rcbuf_del(rcbuf); + } +} + +nghttp3_vec nghttp3_rcbuf_get_buf(const nghttp3_rcbuf *rcbuf) { + nghttp3_vec res = {rcbuf->base, rcbuf->len}; + return res; +} + +int nghttp3_rcbuf_is_static(const nghttp3_rcbuf *rcbuf) { + return rcbuf->ref == -1; +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_rcbuf.h b/contrib/libs/nghttp3/lib/nghttp3_rcbuf.h new file mode 100644 index 0000000000..97f83234ab --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_rcbuf.h @@ -0,0 +1,81 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2016 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_RCBUF_H +#define NGHTTP3_RCBUF_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +struct nghttp3_rcbuf { + /* mem is the memory allocator that allocates memory for this + object. */ + const nghttp3_mem *mem; + /* The pointer to the underlying buffer */ + uint8_t *base; + /* Size of buffer pointed by |base|. */ + size_t len; + /* Reference count */ + int32_t ref; +}; + +/* + * Allocates nghttp3_rcbuf object with |size| as initial buffer size. + * When the function succeeds, the reference count becomes 1. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM: + * Out of memory. + */ +int nghttp3_rcbuf_new(nghttp3_rcbuf **rcbuf_ptr, size_t size, + const nghttp3_mem *mem); + +/* + * Like nghttp3_rcbuf_new(), but initializes the buffer with |src| of + * length |srclen|. This function allocates additional byte at the + * end and puts '\0' into it, so that the resulting buffer could be + * used as NULL-terminated string. Still (*rcbuf_ptr)->len equals to + * |srclen|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM: + * Out of memory. + */ +int nghttp3_rcbuf_new2(nghttp3_rcbuf **rcbuf_ptr, const uint8_t *src, + size_t srclen, const nghttp3_mem *mem); + +/* + * Frees |rcbuf| itself, regardless of its reference cout. + */ +void nghttp3_rcbuf_del(nghttp3_rcbuf *rcbuf); + +#endif /* !defined(NGHTTP3_RCBUF_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_ringbuf.c b/contrib/libs/nghttp3/lib/nghttp3_ringbuf.c new file mode 100644 index 0000000000..7d3ab39bf8 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_ringbuf.c @@ -0,0 +1,154 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_ringbuf.h" + +#include <assert.h> +#include <string.h> +#ifdef WIN32 +# include <intrin.h> +#endif /* defined(WIN32) */ + +#include "nghttp3_macro.h" + +static int ispow2(size_t n) { +#if defined(_MSC_VER) && !defined(__clang__) && \ + (defined(_M_ARM) || (defined(_M_ARM64) && _MSC_VER < 1941)) + return n && !(n & (n - 1)); +#elif defined(WIN32) + return 1 == __popcnt((unsigned int)n); +#else /* !((defined(_MSC_VER) && !defined(__clang__) && (defined(_M_ARM) || \ + (defined(_M_ARM64) && _MSC_VER < 1941))) || defined(WIN32)) */ + return 1 == __builtin_popcount((unsigned int)n); +#endif /* !((defined(_MSC_VER) && !defined(__clang__) && (defined(_M_ARM) || \ + (defined(_M_ARM64) && _MSC_VER < 1941))) || defined(WIN32)) */ +} + +int nghttp3_ringbuf_init(nghttp3_ringbuf *rb, size_t nmemb, size_t size, + const nghttp3_mem *mem) { + if (nmemb) { + assert(ispow2(nmemb)); + + rb->buf = nghttp3_mem_malloc(mem, nmemb * size); + if (rb->buf == NULL) { + return NGHTTP3_ERR_NOMEM; + } + } else { + rb->buf = NULL; + } + + rb->mem = mem; + rb->nmemb = nmemb; + rb->size = size; + rb->first = 0; + rb->len = 0; + + return 0; +} + +void nghttp3_ringbuf_free(nghttp3_ringbuf *rb) { + if (rb == NULL) { + return; + } + + nghttp3_mem_free(rb->mem, rb->buf); +} + +void *nghttp3_ringbuf_push_front(nghttp3_ringbuf *rb) { + rb->first = (rb->first - 1) & (rb->nmemb - 1); + rb->len = nghttp3_min_size(rb->nmemb, rb->len + 1); + + return (void *)&rb->buf[rb->first * rb->size]; +} + +void *nghttp3_ringbuf_push_back(nghttp3_ringbuf *rb) { + size_t offset = (rb->first + rb->len) & (rb->nmemb - 1); + + if (rb->len == rb->nmemb) { + rb->first = (rb->first + 1) & (rb->nmemb - 1); + } else { + ++rb->len; + } + + return (void *)&rb->buf[offset * rb->size]; +} + +void nghttp3_ringbuf_pop_front(nghttp3_ringbuf *rb) { + rb->first = (rb->first + 1) & (rb->nmemb - 1); + --rb->len; +} + +void nghttp3_ringbuf_pop_back(nghttp3_ringbuf *rb) { + assert(rb->len); + --rb->len; +} + +void nghttp3_ringbuf_resize(nghttp3_ringbuf *rb, size_t len) { + assert(len <= rb->nmemb); + rb->len = len; +} + +void *nghttp3_ringbuf_get(nghttp3_ringbuf *rb, size_t offset) { + assert(offset < rb->len); + offset = (rb->first + offset) & (rb->nmemb - 1); + return &rb->buf[offset * rb->size]; +} + +int nghttp3_ringbuf_full(nghttp3_ringbuf *rb) { return rb->len == rb->nmemb; } + +int nghttp3_ringbuf_reserve(nghttp3_ringbuf *rb, size_t nmemb) { + uint8_t *buf; + + if (rb->nmemb >= nmemb) { + return 0; + } + + assert(ispow2(nmemb)); + + buf = nghttp3_mem_malloc(rb->mem, nmemb * rb->size); + if (buf == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + if (rb->buf != NULL) { + if (rb->first + rb->len <= rb->nmemb) { + memcpy(buf, rb->buf + rb->first * rb->size, rb->len * rb->size); + rb->first = 0; + } else { + memcpy(buf, rb->buf + rb->first * rb->size, + (rb->nmemb - rb->first) * rb->size); + memcpy(buf + (rb->nmemb - rb->first) * rb->size, rb->buf, + (rb->len - (rb->nmemb - rb->first)) * rb->size); + rb->first = 0; + } + + nghttp3_mem_free(rb->mem, rb->buf); + } + + rb->buf = buf; + rb->nmemb = nmemb; + + return 0; +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_ringbuf.h b/contrib/libs/nghttp3/lib/nghttp3_ringbuf.h new file mode 100644 index 0000000000..b154290a51 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_ringbuf.h @@ -0,0 +1,113 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_RINGBUF_H +#define NGHTTP3_RINGBUF_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_mem.h" + +typedef struct nghttp3_ringbuf { + /* buf points to the underlying buffer. */ + uint8_t *buf; + const nghttp3_mem *mem; + /* nmemb is the number of elements that can be stored in this ring + buffer. */ + size_t nmemb; + /* size is the size of each element. */ + size_t size; + /* first is the offset to the first element. */ + size_t first; + /* len is the number of elements actually stored. */ + size_t len; +} nghttp3_ringbuf; + +/* + * nghttp3_ringbuf_init initializes |rb|. |nmemb| is the number of + * elements that can be stored in this buffer. |size| is the size of + * each element. |size| must be power of 2. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_NOMEM + * Out of memory. + */ +int nghttp3_ringbuf_init(nghttp3_ringbuf *rb, size_t nmemb, size_t size, + const nghttp3_mem *mem); + +/* + * nghttp3_ringbuf_free frees resources allocated for |rb|. This + * function does not free the memory pointed by |rb|. + */ +void nghttp3_ringbuf_free(nghttp3_ringbuf *rb); + +/* nghttp3_ringbuf_push_front moves the offset to the first element in + the buffer backward, and returns the pointer to the element. + Caller can store data to the buffer pointed by the returned + pointer. If this action exceeds the capacity of the ring buffer, + the last element is silently overwritten, and rb->len remains + unchanged. */ +void *nghttp3_ringbuf_push_front(nghttp3_ringbuf *rb); + +/* nghttp3_ringbuf_push_back moves the offset to the last element in + the buffer forward, and returns the pointer to the element. Caller + can store data to the buffer pointed by the returned pointer. If + this action exceeds the capacity of the ring buffer, the first + element is silently overwritten, and rb->len remains unchanged. */ +void *nghttp3_ringbuf_push_back(nghttp3_ringbuf *rb); + +/* + * nghttp3_ringbuf_pop_front removes first element in |rb|. + */ +void nghttp3_ringbuf_pop_front(nghttp3_ringbuf *rb); + +/* + * nghttp3_ringbuf_pop_back removes the last element in |rb|. + */ +void nghttp3_ringbuf_pop_back(nghttp3_ringbuf *rb); + +/* nghttp3_ringbuf_resize changes the number of elements stored. This + does not change the capacity of the underlying buffer. */ +void nghttp3_ringbuf_resize(nghttp3_ringbuf *rb, size_t len); + +/* nghttp3_ringbuf_get returns the pointer to the element at + |offset|. */ +void *nghttp3_ringbuf_get(nghttp3_ringbuf *rb, size_t offset); + +/* nghttp3_ringbuf_len returns the number of elements stored. */ +#define nghttp3_ringbuf_len(RB) ((RB)->len) + +/* nghttp3_ringbuf_full returns nonzero if |rb| is full. */ +int nghttp3_ringbuf_full(nghttp3_ringbuf *rb); + +int nghttp3_ringbuf_reserve(nghttp3_ringbuf *rb, size_t nmemb); + +#endif /* !defined(NGHTTP3_RINGBUF_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_str.c b/contrib/libs/nghttp3/lib/nghttp3_str.c new file mode 100644 index 0000000000..fc131404d1 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_str.c @@ -0,0 +1,110 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_str.h" + +#include <string.h> +#include <assert.h> + +uint8_t *nghttp3_cpymem(uint8_t *dest, const uint8_t *src, size_t n) { + memcpy(dest, src, n); + return dest + n; +} + +/* Generated by gendowncasetbl.py */ +static const uint8_t DOWNCASE_TBL[] = { + 0 /* NUL */, 1 /* SOH */, 2 /* STX */, 3 /* ETX */, + 4 /* EOT */, 5 /* ENQ */, 6 /* ACK */, 7 /* BEL */, + 8 /* BS */, 9 /* HT */, 10 /* LF */, 11 /* VT */, + 12 /* FF */, 13 /* CR */, 14 /* SO */, 15 /* SI */, + 16 /* DLE */, 17 /* DC1 */, 18 /* DC2 */, 19 /* DC3 */, + 20 /* DC4 */, 21 /* NAK */, 22 /* SYN */, 23 /* ETB */, + 24 /* CAN */, 25 /* EM */, 26 /* SUB */, 27 /* ESC */, + 28 /* FS */, 29 /* GS */, 30 /* RS */, 31 /* US */, + 32 /* SPC */, 33 /* ! */, 34 /* " */, 35 /* # */, + 36 /* $ */, 37 /* % */, 38 /* & */, 39 /* ' */, + 40 /* ( */, 41 /* ) */, 42 /* * */, 43 /* + */, + 44 /* , */, 45 /* - */, 46 /* . */, 47 /* / */, + 48 /* 0 */, 49 /* 1 */, 50 /* 2 */, 51 /* 3 */, + 52 /* 4 */, 53 /* 5 */, 54 /* 6 */, 55 /* 7 */, + 56 /* 8 */, 57 /* 9 */, 58 /* : */, 59 /* ; */, + 60 /* < */, 61 /* = */, 62 /* > */, 63 /* ? */, + 64 /* @ */, 97 /* A */, 98 /* B */, 99 /* C */, + 100 /* D */, 101 /* E */, 102 /* F */, 103 /* G */, + 104 /* H */, 105 /* I */, 106 /* J */, 107 /* K */, + 108 /* L */, 109 /* M */, 110 /* N */, 111 /* O */, + 112 /* P */, 113 /* Q */, 114 /* R */, 115 /* S */, + 116 /* T */, 117 /* U */, 118 /* V */, 119 /* W */, + 120 /* X */, 121 /* Y */, 122 /* Z */, 91 /* [ */, + 92 /* \ */, 93 /* ] */, 94 /* ^ */, 95 /* _ */, + 96 /* ` */, 97 /* a */, 98 /* b */, 99 /* c */, + 100 /* d */, 101 /* e */, 102 /* f */, 103 /* g */, + 104 /* h */, 105 /* i */, 106 /* j */, 107 /* k */, + 108 /* l */, 109 /* m */, 110 /* n */, 111 /* o */, + 112 /* p */, 113 /* q */, 114 /* r */, 115 /* s */, + 116 /* t */, 117 /* u */, 118 /* v */, 119 /* w */, + 120 /* x */, 121 /* y */, 122 /* z */, 123 /* { */, + 124 /* | */, 125 /* } */, 126 /* ~ */, 127 /* DEL */, + 128 /* 0x80 */, 129 /* 0x81 */, 130 /* 0x82 */, 131 /* 0x83 */, + 132 /* 0x84 */, 133 /* 0x85 */, 134 /* 0x86 */, 135 /* 0x87 */, + 136 /* 0x88 */, 137 /* 0x89 */, 138 /* 0x8a */, 139 /* 0x8b */, + 140 /* 0x8c */, 141 /* 0x8d */, 142 /* 0x8e */, 143 /* 0x8f */, + 144 /* 0x90 */, 145 /* 0x91 */, 146 /* 0x92 */, 147 /* 0x93 */, + 148 /* 0x94 */, 149 /* 0x95 */, 150 /* 0x96 */, 151 /* 0x97 */, + 152 /* 0x98 */, 153 /* 0x99 */, 154 /* 0x9a */, 155 /* 0x9b */, + 156 /* 0x9c */, 157 /* 0x9d */, 158 /* 0x9e */, 159 /* 0x9f */, + 160 /* 0xa0 */, 161 /* 0xa1 */, 162 /* 0xa2 */, 163 /* 0xa3 */, + 164 /* 0xa4 */, 165 /* 0xa5 */, 166 /* 0xa6 */, 167 /* 0xa7 */, + 168 /* 0xa8 */, 169 /* 0xa9 */, 170 /* 0xaa */, 171 /* 0xab */, + 172 /* 0xac */, 173 /* 0xad */, 174 /* 0xae */, 175 /* 0xaf */, + 176 /* 0xb0 */, 177 /* 0xb1 */, 178 /* 0xb2 */, 179 /* 0xb3 */, + 180 /* 0xb4 */, 181 /* 0xb5 */, 182 /* 0xb6 */, 183 /* 0xb7 */, + 184 /* 0xb8 */, 185 /* 0xb9 */, 186 /* 0xba */, 187 /* 0xbb */, + 188 /* 0xbc */, 189 /* 0xbd */, 190 /* 0xbe */, 191 /* 0xbf */, + 192 /* 0xc0 */, 193 /* 0xc1 */, 194 /* 0xc2 */, 195 /* 0xc3 */, + 196 /* 0xc4 */, 197 /* 0xc5 */, 198 /* 0xc6 */, 199 /* 0xc7 */, + 200 /* 0xc8 */, 201 /* 0xc9 */, 202 /* 0xca */, 203 /* 0xcb */, + 204 /* 0xcc */, 205 /* 0xcd */, 206 /* 0xce */, 207 /* 0xcf */, + 208 /* 0xd0 */, 209 /* 0xd1 */, 210 /* 0xd2 */, 211 /* 0xd3 */, + 212 /* 0xd4 */, 213 /* 0xd5 */, 214 /* 0xd6 */, 215 /* 0xd7 */, + 216 /* 0xd8 */, 217 /* 0xd9 */, 218 /* 0xda */, 219 /* 0xdb */, + 220 /* 0xdc */, 221 /* 0xdd */, 222 /* 0xde */, 223 /* 0xdf */, + 224 /* 0xe0 */, 225 /* 0xe1 */, 226 /* 0xe2 */, 227 /* 0xe3 */, + 228 /* 0xe4 */, 229 /* 0xe5 */, 230 /* 0xe6 */, 231 /* 0xe7 */, + 232 /* 0xe8 */, 233 /* 0xe9 */, 234 /* 0xea */, 235 /* 0xeb */, + 236 /* 0xec */, 237 /* 0xed */, 238 /* 0xee */, 239 /* 0xef */, + 240 /* 0xf0 */, 241 /* 0xf1 */, 242 /* 0xf2 */, 243 /* 0xf3 */, + 244 /* 0xf4 */, 245 /* 0xf5 */, 246 /* 0xf6 */, 247 /* 0xf7 */, + 248 /* 0xf8 */, 249 /* 0xf9 */, 250 /* 0xfa */, 251 /* 0xfb */, + 252 /* 0xfc */, 253 /* 0xfd */, 254 /* 0xfe */, 255 /* 0xff */, +}; + +void nghttp3_downcase(uint8_t *s, size_t len) { + size_t i; + for (i = 0; i < len; ++i) { + s[i] = DOWNCASE_TBL[s[i]]; + } +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_str.h b/contrib/libs/nghttp3/lib/nghttp3_str.h new file mode 100644 index 0000000000..280749a3a9 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_str.h @@ -0,0 +1,40 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_STR_H +#define NGHTTP3_STR_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +uint8_t *nghttp3_cpymem(uint8_t *dest, const uint8_t *src, size_t n); + +void nghttp3_downcase(uint8_t *s, size_t len); + +#endif /* !defined(NGHTTP3_STR_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_stream.c b/contrib/libs/nghttp3/lib/nghttp3_stream.c new file mode 100644 index 0000000000..328cddd488 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_stream.c @@ -0,0 +1,1247 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_stream.h" + +#include <string.h> +#include <assert.h> +#include <stdio.h> + +#include "nghttp3_conv.h" +#include "nghttp3_macro.h" +#include "nghttp3_frame.h" +#include "nghttp3_conn.h" +#include "nghttp3_str.h" +#include "nghttp3_http.h" +#include "nghttp3_vec.h" +#include "nghttp3_unreachable.h" + +/* NGHTTP3_STREAM_MAX_COPY_THRES is the maximum size of buffer which + makes a copy to outq. */ +#define NGHTTP3_STREAM_MAX_COPY_THRES 128 + +/* NGHTTP3_MIN_RBLEN is the minimum length of nghttp3_ringbuf */ +#define NGHTTP3_MIN_RBLEN 4 + +nghttp3_objalloc_def(stream, nghttp3_stream, oplent); + +int nghttp3_stream_new(nghttp3_stream **pstream, int64_t stream_id, + const nghttp3_stream_callbacks *callbacks, + nghttp3_objalloc *out_chunk_objalloc, + nghttp3_objalloc *stream_objalloc, + const nghttp3_mem *mem) { + nghttp3_stream *stream = nghttp3_objalloc_stream_get(stream_objalloc); + + if (stream == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + memset(stream, 0, sizeof(*stream)); + + stream->out_chunk_objalloc = out_chunk_objalloc; + stream->stream_objalloc = stream_objalloc; + + nghttp3_tnode_init(&stream->node, stream_id); + + nghttp3_ringbuf_init(&stream->frq, 0, sizeof(nghttp3_frame_entry), mem); + nghttp3_ringbuf_init(&stream->chunks, 0, sizeof(nghttp3_buf), mem); + nghttp3_ringbuf_init(&stream->outq, 0, sizeof(nghttp3_typed_buf), mem); + nghttp3_ringbuf_init(&stream->inq, 0, sizeof(nghttp3_buf), mem); + + nghttp3_qpack_stream_context_init(&stream->qpack_sctx, stream_id, mem); + + stream->qpack_blocked_pe.index = NGHTTP3_PQ_BAD_INDEX; + stream->mem = mem; + stream->rx.http.status_code = -1; + stream->rx.http.content_length = -1; + stream->rx.http.pri.urgency = NGHTTP3_DEFAULT_URGENCY; + stream->error_code = NGHTTP3_H3_NO_ERROR; + + if (callbacks) { + stream->callbacks = *callbacks; + } + + *pstream = stream; + + return 0; +} + +static void delete_outq(nghttp3_ringbuf *outq, const nghttp3_mem *mem) { + nghttp3_typed_buf *tbuf; + size_t i, len = nghttp3_ringbuf_len(outq); + + for (i = 0; i < len; ++i) { + tbuf = nghttp3_ringbuf_get(outq, i); + if (tbuf->type == NGHTTP3_BUF_TYPE_PRIVATE) { + nghttp3_buf_free(&tbuf->buf, mem); + } + } + + nghttp3_ringbuf_free(outq); +} + +static void delete_chunks(nghttp3_ringbuf *chunks, const nghttp3_mem *mem) { + nghttp3_buf *buf; + size_t i, len = nghttp3_ringbuf_len(chunks); + + for (i = 0; i < len; ++i) { + buf = nghttp3_ringbuf_get(chunks, i); + nghttp3_buf_free(buf, mem); + } + + nghttp3_ringbuf_free(chunks); +} + +static void delete_out_chunks(nghttp3_ringbuf *chunks, + nghttp3_objalloc *out_chunk_objalloc, + const nghttp3_mem *mem) { + nghttp3_buf *buf; + size_t i, len = nghttp3_ringbuf_len(chunks); + + for (i = 0; i < len; ++i) { + buf = nghttp3_ringbuf_get(chunks, i); + + if (nghttp3_buf_cap(buf) == NGHTTP3_STREAM_MIN_CHUNK_SIZE) { + nghttp3_objalloc_chunk_release(out_chunk_objalloc, + (nghttp3_chunk *)(void *)buf->begin); + continue; + } + + nghttp3_buf_free(buf, mem); + } + + nghttp3_ringbuf_free(chunks); +} + +static void delete_frq(nghttp3_ringbuf *frq, const nghttp3_mem *mem) { + nghttp3_frame_entry *frent; + size_t i, len = nghttp3_ringbuf_len(frq); + + for (i = 0; i < len; ++i) { + frent = nghttp3_ringbuf_get(frq, i); + switch (frent->fr.hd.type) { + case NGHTTP3_FRAME_HEADERS: + nghttp3_frame_headers_free(&frent->fr.headers, mem); + break; + case NGHTTP3_FRAME_PRIORITY_UPDATE: + nghttp3_frame_priority_update_free(&frent->fr.priority_update, mem); + break; + default: + break; + } + } + + nghttp3_ringbuf_free(frq); +} + +void nghttp3_stream_del(nghttp3_stream *stream) { + if (stream == NULL) { + return; + } + + nghttp3_qpack_stream_context_free(&stream->qpack_sctx); + delete_chunks(&stream->inq, stream->mem); + delete_outq(&stream->outq, stream->mem); + delete_out_chunks(&stream->chunks, stream->out_chunk_objalloc, stream->mem); + delete_frq(&stream->frq, stream->mem); + nghttp3_tnode_free(&stream->node); + + nghttp3_objalloc_stream_release(stream->stream_objalloc, stream); +} + +void nghttp3_varint_read_state_reset(nghttp3_varint_read_state *rvint) { + memset(rvint, 0, sizeof(*rvint)); +} + +void nghttp3_stream_read_state_reset(nghttp3_stream_read_state *rstate) { + memset(rstate, 0, sizeof(*rstate)); +} + +nghttp3_ssize nghttp3_read_varint(nghttp3_varint_read_state *rvint, + const uint8_t *begin, const uint8_t *end, + int fin) { + const uint8_t *orig_begin = begin; + size_t len; + + assert(begin != end); + + if (rvint->left == 0) { + assert(rvint->acc == 0); + + len = nghttp3_get_varintlen(begin); + if (len <= (size_t)(end - begin)) { + nghttp3_get_varint(&rvint->acc, begin); + return (nghttp3_ssize)len; + } + + if (fin) { + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + rvint->acc = nghttp3_get_varint_fb(begin++); + rvint->left = len - 1; + } + + len = nghttp3_min_size(rvint->left, (size_t)(end - begin)); + end = begin + len; + + for (; begin != end;) { + rvint->acc = (rvint->acc << 8) + *begin++; + } + + rvint->left -= len; + + if (fin && rvint->left) { + return NGHTTP3_ERR_INVALID_ARGUMENT; + } + + return (nghttp3_ssize)(begin - orig_begin); +} + +int nghttp3_stream_frq_add(nghttp3_stream *stream, + const nghttp3_frame_entry *frent) { + nghttp3_ringbuf *frq = &stream->frq; + nghttp3_frame_entry *dest; + int rv; + + if (nghttp3_ringbuf_full(frq)) { + size_t nlen = + nghttp3_max_size(NGHTTP3_MIN_RBLEN, nghttp3_ringbuf_len(frq) * 2); + rv = nghttp3_ringbuf_reserve(frq, nlen); + if (rv != 0) { + return rv; + } + } + + dest = nghttp3_ringbuf_push_back(frq); + *dest = *frent; + + return 0; +} + +int nghttp3_stream_fill_outq(nghttp3_stream *stream) { + nghttp3_ringbuf *frq = &stream->frq; + nghttp3_frame_entry *frent; + int data_eof; + int rv; + + for (; nghttp3_ringbuf_len(frq) && + stream->unsent_bytes < NGHTTP3_MIN_UNSENT_BYTES;) { + frent = nghttp3_ringbuf_get(frq, 0); + + switch (frent->fr.hd.type) { + case NGHTTP3_FRAME_SETTINGS: + rv = nghttp3_stream_write_settings(stream, frent); + if (rv != 0) { + return rv; + } + break; + case NGHTTP3_FRAME_HEADERS: + rv = nghttp3_stream_write_headers(stream, frent); + if (rv != 0) { + return rv; + } + nghttp3_frame_headers_free(&frent->fr.headers, stream->mem); + break; + case NGHTTP3_FRAME_DATA: + rv = nghttp3_stream_write_data(stream, &data_eof, frent); + if (rv != 0) { + return rv; + } + if (stream->flags & NGHTTP3_STREAM_FLAG_READ_DATA_BLOCKED) { + return 0; + } + if (!data_eof) { + return 0; + } + break; + case NGHTTP3_FRAME_GOAWAY: + rv = nghttp3_stream_write_goaway(stream, frent); + if (rv != 0) { + return rv; + } + break; + case NGHTTP3_FRAME_PRIORITY_UPDATE: + rv = nghttp3_stream_write_priority_update(stream, frent); + if (rv != 0) { + return rv; + } + nghttp3_frame_priority_update_free(&frent->fr.priority_update, + stream->mem); + break; + default: + /* TODO Not implemented */ + break; + } + + nghttp3_ringbuf_pop_front(frq); + } + + return 0; +} + +static void typed_buf_shared_init(nghttp3_typed_buf *tbuf, + const nghttp3_buf *chunk) { + nghttp3_typed_buf_init(tbuf, chunk, NGHTTP3_BUF_TYPE_SHARED); + tbuf->buf.pos = tbuf->buf.last; +} + +int nghttp3_stream_write_stream_type(nghttp3_stream *stream) { + size_t len = nghttp3_put_varintlen((int64_t)stream->type); + nghttp3_buf *chunk; + nghttp3_typed_buf tbuf; + int rv; + + rv = nghttp3_stream_ensure_chunk(stream, len); + if (rv != 0) { + return rv; + } + + chunk = nghttp3_stream_get_chunk(stream); + typed_buf_shared_init(&tbuf, chunk); + + chunk->last = nghttp3_put_varint(chunk->last, (int64_t)stream->type); + tbuf.buf.last = chunk->last; + + return nghttp3_stream_outq_add(stream, &tbuf); +} + +int nghttp3_stream_write_settings(nghttp3_stream *stream, + nghttp3_frame_entry *frent) { + size_t len; + int rv; + nghttp3_buf *chunk; + nghttp3_typed_buf tbuf; + struct { + nghttp3_frame_settings settings; + nghttp3_settings_entry iv[15]; + } fr; + nghttp3_settings_entry *iv; + nghttp3_settings *local_settings = frent->aux.settings.local_settings; + + fr.settings.hd.type = NGHTTP3_FRAME_SETTINGS; + fr.settings.niv = 3; + iv = &fr.settings.iv[0]; + + iv[0].id = NGHTTP3_SETTINGS_ID_MAX_FIELD_SECTION_SIZE; + iv[0].value = local_settings->max_field_section_size; + iv[1].id = NGHTTP3_SETTINGS_ID_QPACK_MAX_TABLE_CAPACITY; + iv[1].value = local_settings->qpack_max_dtable_capacity; + iv[2].id = NGHTTP3_SETTINGS_ID_QPACK_BLOCKED_STREAMS; + iv[2].value = local_settings->qpack_blocked_streams; + + if (local_settings->h3_datagram) { + iv[fr.settings.niv].id = NGHTTP3_SETTINGS_ID_H3_DATAGRAM; + iv[fr.settings.niv].value = 1; + + ++fr.settings.niv; + } + + if (local_settings->enable_connect_protocol) { + iv[fr.settings.niv].id = NGHTTP3_SETTINGS_ID_ENABLE_CONNECT_PROTOCOL; + iv[fr.settings.niv].value = 1; + + ++fr.settings.niv; + } + + len = nghttp3_frame_write_settings_len(&fr.settings.hd.length, &fr.settings); + + rv = nghttp3_stream_ensure_chunk(stream, len); + if (rv != 0) { + return rv; + } + + chunk = nghttp3_stream_get_chunk(stream); + typed_buf_shared_init(&tbuf, chunk); + + chunk->last = nghttp3_frame_write_settings(chunk->last, &fr.settings); + + tbuf.buf.last = chunk->last; + + return nghttp3_stream_outq_add(stream, &tbuf); +} + +int nghttp3_stream_write_goaway(nghttp3_stream *stream, + nghttp3_frame_entry *frent) { + nghttp3_frame_goaway *fr = &frent->fr.goaway; + size_t len; + int rv; + nghttp3_buf *chunk; + nghttp3_typed_buf tbuf; + + len = nghttp3_frame_write_goaway_len(&fr->hd.length, fr); + + rv = nghttp3_stream_ensure_chunk(stream, len); + if (rv != 0) { + return rv; + } + + chunk = nghttp3_stream_get_chunk(stream); + typed_buf_shared_init(&tbuf, chunk); + + chunk->last = nghttp3_frame_write_goaway(chunk->last, fr); + + tbuf.buf.last = chunk->last; + + return nghttp3_stream_outq_add(stream, &tbuf); +} + +int nghttp3_stream_write_priority_update(nghttp3_stream *stream, + nghttp3_frame_entry *frent) { + nghttp3_frame_priority_update *fr = &frent->fr.priority_update; + size_t len; + int rv; + nghttp3_buf *chunk; + nghttp3_typed_buf tbuf; + + len = nghttp3_frame_write_priority_update_len(&fr->hd.length, fr); + + rv = nghttp3_stream_ensure_chunk(stream, len); + if (rv != 0) { + return rv; + } + + chunk = nghttp3_stream_get_chunk(stream); + typed_buf_shared_init(&tbuf, chunk); + + chunk->last = nghttp3_frame_write_priority_update(chunk->last, fr); + + tbuf.buf.last = chunk->last; + + return nghttp3_stream_outq_add(stream, &tbuf); +} + +int nghttp3_stream_write_headers(nghttp3_stream *stream, + nghttp3_frame_entry *frent) { + nghttp3_frame_headers *fr = &frent->fr.headers; + nghttp3_conn *conn = stream->conn; + + assert(conn); + + return nghttp3_stream_write_header_block( + stream, &conn->qenc, conn->tx.qenc, &conn->tx.qpack.rbuf, + &conn->tx.qpack.ebuf, NGHTTP3_FRAME_HEADERS, fr->nva, fr->nvlen); +} + +int nghttp3_stream_write_header_block(nghttp3_stream *stream, + nghttp3_qpack_encoder *qenc, + nghttp3_stream *qenc_stream, + nghttp3_buf *rbuf, nghttp3_buf *ebuf, + int64_t frame_type, const nghttp3_nv *nva, + size_t nvlen) { + nghttp3_buf pbuf; + int rv; + size_t len; + nghttp3_buf *chunk; + nghttp3_typed_buf tbuf; + nghttp3_frame_hd hd; + uint8_t raw_pbuf[16]; + size_t pbuflen, rbuflen, ebuflen; + + nghttp3_buf_wrap_init(&pbuf, raw_pbuf, sizeof(raw_pbuf)); + + rv = nghttp3_qpack_encoder_encode(qenc, &pbuf, rbuf, ebuf, stream->node.id, + nva, nvlen); + if (rv != 0) { + goto fail; + } + + pbuflen = nghttp3_buf_len(&pbuf); + rbuflen = nghttp3_buf_len(rbuf); + ebuflen = nghttp3_buf_len(ebuf); + + hd.type = frame_type; + hd.length = (int64_t)(pbuflen + rbuflen); + + len = nghttp3_frame_write_hd_len(&hd) + pbuflen; + + if (rbuflen <= NGHTTP3_STREAM_MAX_COPY_THRES) { + len += rbuflen; + } + + rv = nghttp3_stream_ensure_chunk(stream, len); + if (rv != 0) { + goto fail; + } + + chunk = nghttp3_stream_get_chunk(stream); + typed_buf_shared_init(&tbuf, chunk); + + chunk->last = nghttp3_frame_write_hd(chunk->last, &hd); + + chunk->last = nghttp3_cpymem(chunk->last, pbuf.pos, pbuflen); + nghttp3_buf_init(&pbuf); + + if (rbuflen > NGHTTP3_STREAM_MAX_COPY_THRES) { + tbuf.buf.last = chunk->last; + + rv = nghttp3_stream_outq_add(stream, &tbuf); + if (rv != 0) { + goto fail; + } + + nghttp3_typed_buf_init(&tbuf, rbuf, NGHTTP3_BUF_TYPE_PRIVATE); + rv = nghttp3_stream_outq_add(stream, &tbuf); + if (rv != 0) { + goto fail; + } + nghttp3_buf_init(rbuf); + } else if (rbuflen) { + chunk->last = nghttp3_cpymem(chunk->last, rbuf->pos, rbuflen); + tbuf.buf.last = chunk->last; + + rv = nghttp3_stream_outq_add(stream, &tbuf); + if (rv != 0) { + goto fail; + } + nghttp3_buf_reset(rbuf); + } + + if (ebuflen > NGHTTP3_STREAM_MAX_COPY_THRES) { + assert(qenc_stream); + + nghttp3_typed_buf_init(&tbuf, ebuf, NGHTTP3_BUF_TYPE_PRIVATE); + rv = nghttp3_stream_outq_add(qenc_stream, &tbuf); + if (rv != 0) { + return rv; + } + nghttp3_buf_init(ebuf); + } else if (ebuflen) { + assert(qenc_stream); + + rv = nghttp3_stream_ensure_chunk(qenc_stream, ebuflen); + if (rv != 0) { + goto fail; + } + + chunk = nghttp3_stream_get_chunk(qenc_stream); + typed_buf_shared_init(&tbuf, chunk); + + chunk->last = nghttp3_cpymem(chunk->last, ebuf->pos, ebuflen); + tbuf.buf.last = chunk->last; + + rv = nghttp3_stream_outq_add(qenc_stream, &tbuf); + if (rv != 0) { + goto fail; + } + nghttp3_buf_reset(ebuf); + } + + assert(0 == nghttp3_buf_len(&pbuf)); + assert(0 == nghttp3_buf_len(rbuf)); + assert(0 == nghttp3_buf_len(ebuf)); + + return 0; + +fail: + + return rv; +} + +int nghttp3_stream_write_data(nghttp3_stream *stream, int *peof, + nghttp3_frame_entry *frent) { + int rv; + size_t len; + nghttp3_typed_buf tbuf; + nghttp3_buf buf; + nghttp3_buf *chunk; + nghttp3_read_data_callback read_data = frent->aux.data.dr.read_data; + nghttp3_conn *conn = stream->conn; + int64_t datalen; + uint32_t flags = 0; + nghttp3_frame_hd hd; + nghttp3_vec vec[8]; + nghttp3_vec *v; + nghttp3_ssize sveccnt; + size_t i; + + assert(!(stream->flags & NGHTTP3_STREAM_FLAG_READ_DATA_BLOCKED)); + assert(read_data); + assert(conn); + + *peof = 0; + + sveccnt = read_data(conn, stream->node.id, vec, nghttp3_arraylen(vec), &flags, + conn->user_data, stream->user_data); + if (sveccnt < 0) { + if (sveccnt == NGHTTP3_ERR_WOULDBLOCK) { + stream->flags |= NGHTTP3_STREAM_FLAG_READ_DATA_BLOCKED; + return 0; + } + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + + datalen = nghttp3_vec_len_varint(vec, (size_t)sveccnt); + if (datalen == -1) { + return NGHTTP3_ERR_STREAM_DATA_OVERFLOW; + } + + assert(datalen || flags & NGHTTP3_DATA_FLAG_EOF); + + if (flags & NGHTTP3_DATA_FLAG_EOF) { + *peof = 1; + if (!(flags & NGHTTP3_DATA_FLAG_NO_END_STREAM)) { + stream->flags |= NGHTTP3_STREAM_FLAG_WRITE_END_STREAM; + if (datalen == 0) { + if (nghttp3_stream_outq_write_done(stream)) { + /* If this is the last data and its is 0 length, we don't + need send DATA frame. We rely on the non-emptiness of + outq to schedule stream, so add empty tbuf to outq to + just send fin. */ + nghttp3_buf_init(&buf); + nghttp3_typed_buf_init(&tbuf, &buf, NGHTTP3_BUF_TYPE_PRIVATE); + return nghttp3_stream_outq_add(stream, &tbuf); + } + return 0; + } + } + + if (datalen == 0) { + /* We are going to send more frames, but no DATA frame this + time. */ + return 0; + } + } + + hd.type = NGHTTP3_FRAME_DATA; + hd.length = datalen; + + len = nghttp3_frame_write_hd_len(&hd); + + rv = nghttp3_stream_ensure_chunk(stream, len); + if (rv != 0) { + return rv; + } + + chunk = nghttp3_stream_get_chunk(stream); + typed_buf_shared_init(&tbuf, chunk); + + chunk->last = nghttp3_frame_write_hd(chunk->last, &hd); + + tbuf.buf.last = chunk->last; + + rv = nghttp3_stream_outq_add(stream, &tbuf); + if (rv != 0) { + return rv; + } + + if (datalen) { + for (i = 0; i < (size_t)sveccnt; ++i) { + v = &vec[i]; + if (v->len == 0) { + continue; + } + nghttp3_buf_wrap_init(&buf, v->base, v->len); + buf.last = buf.end; + nghttp3_typed_buf_init(&tbuf, &buf, NGHTTP3_BUF_TYPE_ALIEN); + rv = nghttp3_stream_outq_add(stream, &tbuf); + if (rv != 0) { + return rv; + } + } + } + + return 0; +} + +int nghttp3_stream_write_qpack_decoder_stream(nghttp3_stream *stream) { + nghttp3_qpack_decoder *qdec; + nghttp3_buf *chunk; + int rv; + nghttp3_typed_buf tbuf; + size_t len; + + assert(stream->conn); + assert(stream->conn->tx.qdec == stream); + + qdec = &stream->conn->qdec; + + assert(qdec); + + len = nghttp3_qpack_decoder_get_decoder_streamlen(qdec); + if (len == 0) { + return 0; + } + + rv = nghttp3_stream_ensure_chunk(stream, len); + if (rv != 0) { + return rv; + } + + chunk = nghttp3_stream_get_chunk(stream); + typed_buf_shared_init(&tbuf, chunk); + + nghttp3_qpack_decoder_write_decoder(qdec, chunk); + + tbuf.buf.last = chunk->last; + + return nghttp3_stream_outq_add(stream, &tbuf); +} + +int nghttp3_stream_outq_add(nghttp3_stream *stream, + const nghttp3_typed_buf *tbuf) { + nghttp3_ringbuf *outq = &stream->outq; + int rv; + nghttp3_typed_buf *dest; + size_t len = nghttp3_ringbuf_len(outq); + size_t buflen = nghttp3_buf_len(&tbuf->buf); + + if (buflen > NGHTTP3_MAX_VARINT - stream->tx.offset) { + return NGHTTP3_ERR_STREAM_DATA_OVERFLOW; + } + + stream->tx.offset += buflen; + stream->unsent_bytes += buflen; + + if (len) { + dest = nghttp3_ringbuf_get(outq, len - 1); + if (dest->type == tbuf->type && dest->type == NGHTTP3_BUF_TYPE_SHARED && + dest->buf.begin == tbuf->buf.begin && dest->buf.last == tbuf->buf.pos) { + /* If we have already written last entry, adjust outq_idx and + offset so that this entry is eligible to send. */ + if (len == stream->outq_idx) { + --stream->outq_idx; + stream->outq_offset = nghttp3_buf_len(&dest->buf); + } + + dest->buf.last = tbuf->buf.last; + /* TODO Is this required? */ + dest->buf.end = tbuf->buf.end; + + return 0; + } + } + + if (nghttp3_ringbuf_full(outq)) { + size_t nlen = nghttp3_max_size(NGHTTP3_MIN_RBLEN, len * 2); + rv = nghttp3_ringbuf_reserve(outq, nlen); + if (rv != 0) { + return rv; + } + } + + dest = nghttp3_ringbuf_push_back(outq); + *dest = *tbuf; + + return 0; +} + +int nghttp3_stream_ensure_chunk(nghttp3_stream *stream, size_t need) { + nghttp3_ringbuf *chunks = &stream->chunks; + nghttp3_buf *chunk; + size_t len = nghttp3_ringbuf_len(chunks); + uint8_t *p; + int rv; + size_t n = NGHTTP3_STREAM_MIN_CHUNK_SIZE; + + if (len) { + chunk = nghttp3_ringbuf_get(chunks, len - 1); + if (nghttp3_buf_left(chunk) >= need) { + return 0; + } + } + + for (; n < need; n *= 2) + ; + + if (n == NGHTTP3_STREAM_MIN_CHUNK_SIZE) { + p = + (uint8_t *)nghttp3_objalloc_chunk_len_get(stream->out_chunk_objalloc, n); + } else { + p = nghttp3_mem_malloc(stream->mem, n); + } + if (p == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + if (nghttp3_ringbuf_full(chunks)) { + size_t nlen = nghttp3_max_size(NGHTTP3_MIN_RBLEN, len * 2); + rv = nghttp3_ringbuf_reserve(chunks, nlen); + if (rv != 0) { + return rv; + } + } + + chunk = nghttp3_ringbuf_push_back(chunks); + nghttp3_buf_wrap_init(chunk, p, n); + + return 0; +} + +nghttp3_buf *nghttp3_stream_get_chunk(nghttp3_stream *stream) { + nghttp3_ringbuf *chunks = &stream->chunks; + size_t len = nghttp3_ringbuf_len(chunks); + + assert(len); + + return nghttp3_ringbuf_get(chunks, len - 1); +} + +int nghttp3_stream_is_blocked(nghttp3_stream *stream) { + return (stream->flags & NGHTTP3_STREAM_FLAG_FC_BLOCKED) || + (stream->flags & NGHTTP3_STREAM_FLAG_SHUT_WR) || + (stream->flags & NGHTTP3_STREAM_FLAG_READ_DATA_BLOCKED); +} + +int nghttp3_stream_require_schedule(nghttp3_stream *stream) { + return (!nghttp3_stream_outq_write_done(stream) && + !(stream->flags & NGHTTP3_STREAM_FLAG_FC_BLOCKED) && + !(stream->flags & NGHTTP3_STREAM_FLAG_SHUT_WR)) || + (nghttp3_ringbuf_len(&stream->frq) && + !(stream->flags & NGHTTP3_STREAM_FLAG_READ_DATA_BLOCKED)); +} + +size_t nghttp3_stream_writev(nghttp3_stream *stream, int *pfin, + nghttp3_vec *vec, size_t veccnt) { + nghttp3_ringbuf *outq = &stream->outq; + size_t len = nghttp3_ringbuf_len(outq); + size_t i = stream->outq_idx; + uint64_t offset = stream->outq_offset; + size_t buflen; + nghttp3_vec *vbegin = vec, *vend = vec + veccnt; + nghttp3_typed_buf *tbuf; + + assert(veccnt > 0); + + if (i < len) { + tbuf = nghttp3_ringbuf_get(outq, i); + buflen = nghttp3_buf_len(&tbuf->buf); + + if (offset < buflen) { + vec->base = tbuf->buf.pos + offset; + vec->len = (size_t)(buflen - offset); + ++vec; + } else { + /* This is the only case that satisfies offset >= buflen */ + assert(0 == offset); + assert(0 == buflen); + } + + ++i; + + for (; i < len && vec != vend; ++i, ++vec) { + tbuf = nghttp3_ringbuf_get(outq, i); + vec->base = tbuf->buf.pos; + vec->len = nghttp3_buf_len(&tbuf->buf); + } + } + + /* TODO Rework this if we have finished implementing HTTP + messaging */ + *pfin = nghttp3_ringbuf_len(&stream->frq) == 0 && i == len && + (stream->flags & NGHTTP3_STREAM_FLAG_WRITE_END_STREAM); + + return (size_t)(vec - vbegin); +} + +void nghttp3_stream_add_outq_offset(nghttp3_stream *stream, size_t n) { + nghttp3_ringbuf *outq = &stream->outq; + size_t i; + size_t len = nghttp3_ringbuf_len(outq); + uint64_t offset = stream->outq_offset + n; + size_t buflen; + nghttp3_typed_buf *tbuf; + + for (i = stream->outq_idx; i < len; ++i) { + tbuf = nghttp3_ringbuf_get(outq, i); + buflen = nghttp3_buf_len(&tbuf->buf); + if (offset >= buflen) { + offset -= buflen; + continue; + } + + break; + } + + assert(i < len || offset == 0); + + stream->unsent_bytes -= n; + stream->outq_idx = i; + stream->outq_offset = offset; +} + +int nghttp3_stream_outq_write_done(nghttp3_stream *stream) { + nghttp3_ringbuf *outq = &stream->outq; + size_t len = nghttp3_ringbuf_len(outq); + + return len == 0 || stream->outq_idx >= len; +} + +static void stream_pop_outq_entry(nghttp3_stream *stream, + nghttp3_typed_buf *tbuf) { + nghttp3_ringbuf *chunks = &stream->chunks; + nghttp3_buf *chunk; + + switch (tbuf->type) { + case NGHTTP3_BUF_TYPE_PRIVATE: + nghttp3_buf_free(&tbuf->buf, stream->mem); + break; + case NGHTTP3_BUF_TYPE_ALIEN: + break; + case NGHTTP3_BUF_TYPE_SHARED: + assert(nghttp3_ringbuf_len(chunks)); + + chunk = nghttp3_ringbuf_get(chunks, 0); + + assert(chunk->begin == tbuf->buf.begin); + assert(chunk->end == tbuf->buf.end); + + if (chunk->last == tbuf->buf.last) { + if (nghttp3_buf_cap(chunk) == NGHTTP3_STREAM_MIN_CHUNK_SIZE) { + nghttp3_objalloc_chunk_release(stream->out_chunk_objalloc, + (nghttp3_chunk *)(void *)chunk->begin); + } else { + nghttp3_buf_free(chunk, stream->mem); + } + nghttp3_ringbuf_pop_front(chunks); + } + break; + default: + nghttp3_unreachable(); + }; + + nghttp3_ringbuf_pop_front(&stream->outq); +} + +int nghttp3_stream_update_ack_offset(nghttp3_stream *stream, uint64_t offset) { + nghttp3_ringbuf *outq = &stream->outq; + size_t buflen; + size_t npopped = 0; + uint64_t nack; + nghttp3_typed_buf *tbuf; + int rv; + + for (; nghttp3_ringbuf_len(outq);) { + tbuf = nghttp3_ringbuf_get(outq, 0); + buflen = nghttp3_buf_len(&tbuf->buf); + + /* For NGHTTP3_BUF_TYPE_ALIEN, we never add 0 length buffer. */ + if (tbuf->type == NGHTTP3_BUF_TYPE_ALIEN && stream->ack_offset < offset && + stream->callbacks.acked_data) { + nack = nghttp3_min_uint64(offset, stream->ack_base + buflen) - + stream->ack_offset; + + rv = stream->callbacks.acked_data(stream, stream->node.id, nack, + stream->user_data); + if (rv != 0) { + return NGHTTP3_ERR_CALLBACK_FAILURE; + } + } + + if (offset >= stream->ack_base + buflen) { + stream_pop_outq_entry(stream, tbuf); + + stream->ack_base += buflen; + stream->ack_offset = stream->ack_base; + ++npopped; + + if (stream->outq_idx + 1 == npopped) { + stream->outq_offset = 0; + break; + } + + continue; + } + + break; + } + + assert(stream->outq_idx + 1 >= npopped); + if (stream->outq_idx >= npopped) { + stream->outq_idx -= npopped; + } else { + stream->outq_idx = 0; + } + + stream->ack_offset = offset; + + return 0; +} + +int nghttp3_stream_buffer_data(nghttp3_stream *stream, const uint8_t *data, + size_t datalen) { + nghttp3_ringbuf *inq = &stream->inq; + size_t len = nghttp3_ringbuf_len(inq); + nghttp3_buf *buf; + size_t nwrite; + uint8_t *rawbuf; + size_t bufleft; + int rv; + + if (len) { + buf = nghttp3_ringbuf_get(inq, len - 1); + bufleft = nghttp3_buf_left(buf); + nwrite = nghttp3_min_size(datalen, bufleft); + buf->last = nghttp3_cpymem(buf->last, data, nwrite); + data += nwrite; + datalen -= nwrite; + } + + for (; datalen;) { + if (nghttp3_ringbuf_full(inq)) { + size_t nlen = + nghttp3_max_size(NGHTTP3_MIN_RBLEN, nghttp3_ringbuf_len(inq) * 2); + rv = nghttp3_ringbuf_reserve(inq, nlen); + if (rv != 0) { + return rv; + } + } + + rawbuf = nghttp3_mem_malloc(stream->mem, 16384); + if (rawbuf == NULL) { + return NGHTTP3_ERR_NOMEM; + } + + buf = nghttp3_ringbuf_push_back(inq); + nghttp3_buf_wrap_init(buf, rawbuf, 16384); + bufleft = nghttp3_buf_left(buf); + nwrite = nghttp3_min_size(datalen, bufleft); + buf->last = nghttp3_cpymem(buf->last, data, nwrite); + data += nwrite; + datalen -= nwrite; + } + + return 0; +} + +size_t nghttp3_stream_get_buffered_datalen(nghttp3_stream *stream) { + nghttp3_ringbuf *inq = &stream->inq; + size_t len = nghttp3_ringbuf_len(inq); + size_t i, n = 0; + nghttp3_buf *buf; + + for (i = 0; i < len; ++i) { + buf = nghttp3_ringbuf_get(inq, i); + n += nghttp3_buf_len(buf); + } + + return n; +} + +int nghttp3_stream_transit_rx_http_state(nghttp3_stream *stream, + nghttp3_stream_http_event event) { + int rv; + + switch (stream->rx.hstate) { + case NGHTTP3_HTTP_STATE_NONE: + return NGHTTP3_ERR_H3_INTERNAL_ERROR; + case NGHTTP3_HTTP_STATE_REQ_INITIAL: + switch (event) { + case NGHTTP3_HTTP_EVENT_HEADERS_BEGIN: + stream->rx.hstate = NGHTTP3_HTTP_STATE_REQ_HEADERS_BEGIN; + return 0; + default: + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + case NGHTTP3_HTTP_STATE_REQ_HEADERS_BEGIN: + if (event != NGHTTP3_HTTP_EVENT_HEADERS_END) { + return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_REQ_HEADERS_END; + return 0; + case NGHTTP3_HTTP_STATE_REQ_HEADERS_END: + switch (event) { + case NGHTTP3_HTTP_EVENT_HEADERS_BEGIN: + /* TODO Better to check status code */ + if (stream->rx.http.flags & NGHTTP3_HTTP_FLAG_METH_CONNECT) { + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_REQ_TRAILERS_BEGIN; + return 0; + case NGHTTP3_HTTP_EVENT_DATA_BEGIN: + stream->rx.hstate = NGHTTP3_HTTP_STATE_REQ_DATA_BEGIN; + return 0; + case NGHTTP3_HTTP_EVENT_MSG_END: + rv = nghttp3_http_on_remote_end_stream(stream); + if (rv != 0) { + return rv; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_REQ_END; + return 0; + default: + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + case NGHTTP3_HTTP_STATE_REQ_DATA_BEGIN: + if (event != NGHTTP3_HTTP_EVENT_DATA_END) { + return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_REQ_DATA_END; + return 0; + case NGHTTP3_HTTP_STATE_REQ_DATA_END: + switch (event) { + case NGHTTP3_HTTP_EVENT_DATA_BEGIN: + stream->rx.hstate = NGHTTP3_HTTP_STATE_REQ_DATA_BEGIN; + return 0; + case NGHTTP3_HTTP_EVENT_HEADERS_BEGIN: + /* TODO Better to check status code */ + if (stream->rx.http.flags & NGHTTP3_HTTP_FLAG_METH_CONNECT) { + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_REQ_TRAILERS_BEGIN; + return 0; + case NGHTTP3_HTTP_EVENT_MSG_END: + rv = nghttp3_http_on_remote_end_stream(stream); + if (rv != 0) { + return rv; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_REQ_END; + return 0; + default: + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + case NGHTTP3_HTTP_STATE_REQ_TRAILERS_BEGIN: + if (event != NGHTTP3_HTTP_EVENT_HEADERS_END) { + return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_REQ_TRAILERS_END; + return 0; + case NGHTTP3_HTTP_STATE_REQ_TRAILERS_END: + if (event != NGHTTP3_HTTP_EVENT_MSG_END) { + /* TODO Should ignore unexpected frame in this state as per + spec. */ + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + rv = nghttp3_http_on_remote_end_stream(stream); + if (rv != 0) { + return rv; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_REQ_END; + return 0; + case NGHTTP3_HTTP_STATE_REQ_END: + return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING; + case NGHTTP3_HTTP_STATE_RESP_INITIAL: + if (event != NGHTTP3_HTTP_EVENT_HEADERS_BEGIN) { + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_HEADERS_BEGIN; + return 0; + case NGHTTP3_HTTP_STATE_RESP_HEADERS_BEGIN: + if (event != NGHTTP3_HTTP_EVENT_HEADERS_END) { + return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_HEADERS_END; + return 0; + case NGHTTP3_HTTP_STATE_RESP_HEADERS_END: + switch (event) { + case NGHTTP3_HTTP_EVENT_HEADERS_BEGIN: + if (stream->rx.http.status_code == -1) { + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_HEADERS_BEGIN; + return 0; + } + if ((stream->rx.http.flags & NGHTTP3_HTTP_FLAG_METH_CONNECT) && + stream->rx.http.status_code / 100 == 2) { + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_TRAILERS_BEGIN; + return 0; + case NGHTTP3_HTTP_EVENT_DATA_BEGIN: + if (stream->rx.http.flags & NGHTTP3_HTTP_FLAG_EXPECT_FINAL_RESPONSE) { + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_DATA_BEGIN; + return 0; + case NGHTTP3_HTTP_EVENT_MSG_END: + rv = nghttp3_http_on_remote_end_stream(stream); + if (rv != 0) { + return rv; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_END; + return 0; + default: + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + case NGHTTP3_HTTP_STATE_RESP_DATA_BEGIN: + if (event != NGHTTP3_HTTP_EVENT_DATA_END) { + return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_DATA_END; + return 0; + case NGHTTP3_HTTP_STATE_RESP_DATA_END: + switch (event) { + case NGHTTP3_HTTP_EVENT_DATA_BEGIN: + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_DATA_BEGIN; + return 0; + case NGHTTP3_HTTP_EVENT_HEADERS_BEGIN: + if ((stream->rx.http.flags & NGHTTP3_HTTP_FLAG_METH_CONNECT) && + stream->rx.http.status_code / 100 == 2) { + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_TRAILERS_BEGIN; + return 0; + case NGHTTP3_HTTP_EVENT_MSG_END: + rv = nghttp3_http_on_remote_end_stream(stream); + if (rv != 0) { + return rv; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_END; + return 0; + default: + return NGHTTP3_ERR_H3_FRAME_UNEXPECTED; + } + case NGHTTP3_HTTP_STATE_RESP_TRAILERS_BEGIN: + if (event != NGHTTP3_HTTP_EVENT_HEADERS_END) { + return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_TRAILERS_END; + return 0; + case NGHTTP3_HTTP_STATE_RESP_TRAILERS_END: + if (event != NGHTTP3_HTTP_EVENT_MSG_END) { + return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING; + } + rv = nghttp3_http_on_remote_end_stream(stream); + if (rv != 0) { + return rv; + } + stream->rx.hstate = NGHTTP3_HTTP_STATE_RESP_END; + return 0; + case NGHTTP3_HTTP_STATE_RESP_END: + return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING; + default: + nghttp3_unreachable(); + } +} + +int nghttp3_stream_empty_headers_allowed(nghttp3_stream *stream) { + switch (stream->rx.hstate) { + case NGHTTP3_HTTP_STATE_REQ_TRAILERS_BEGIN: + case NGHTTP3_HTTP_STATE_RESP_TRAILERS_BEGIN: + return 0; + default: + return NGHTTP3_ERR_MALFORMED_HTTP_MESSAGING; + } +} + +int nghttp3_stream_uni(int64_t stream_id) { return (stream_id & 0x2) != 0; } + +int nghttp3_client_stream_bidi(int64_t stream_id) { + return (stream_id & 0x3) == 0; +} + +int nghttp3_client_stream_uni(int64_t stream_id) { + return (stream_id & 0x3) == 0x2; +} + +int nghttp3_server_stream_uni(int64_t stream_id) { + return (stream_id & 0x3) == 0x3; +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_stream.h b/contrib/libs/nghttp3/lib/nghttp3_stream.h new file mode 100644 index 0000000000..7d296febf9 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_stream.h @@ -0,0 +1,397 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_STREAM_H +#define NGHTTP3_STREAM_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_map.h" +#include "nghttp3_tnode.h" +#include "nghttp3_ringbuf.h" +#include "nghttp3_buf.h" +#include "nghttp3_frame.h" +#include "nghttp3_qpack.h" +#include "nghttp3_objalloc.h" + +#define NGHTTP3_STREAM_MIN_CHUNK_SIZE 256 + +/* NGHTTP3_MIN_UNSENT_BYTES is the minimum unsent bytes which is large + enough to fill outgoing single QUIC packet. */ +#define NGHTTP3_MIN_UNSENT_BYTES 4096 + +/* NGHTTP3_STREAM_MIN_WRITELEN is the minimum length of write to cause + the stream to reschedule. */ +#define NGHTTP3_STREAM_MIN_WRITELEN 800 + +/* nghttp3_stream_type is unidirectional stream type. */ +typedef uint64_t nghttp3_stream_type; + +#define NGHTTP3_STREAM_TYPE_CONTROL 0x00 +#define NGHTTP3_STREAM_TYPE_PUSH 0x01 +#define NGHTTP3_STREAM_TYPE_QPACK_ENCODER 0x02 +#define NGHTTP3_STREAM_TYPE_QPACK_DECODER 0x03 +#define NGHTTP3_STREAM_TYPE_UNKNOWN UINT64_MAX + +typedef enum nghttp3_ctrl_stream_state { + NGHTTP3_CTRL_STREAM_STATE_FRAME_TYPE, + NGHTTP3_CTRL_STREAM_STATE_FRAME_LENGTH, + NGHTTP3_CTRL_STREAM_STATE_SETTINGS, + NGHTTP3_CTRL_STREAM_STATE_GOAWAY, + NGHTTP3_CTRL_STREAM_STATE_MAX_PUSH_ID, + NGHTTP3_CTRL_STREAM_STATE_IGN_FRAME, + NGHTTP3_CTRL_STREAM_STATE_SETTINGS_ID, + NGHTTP3_CTRL_STREAM_STATE_SETTINGS_VALUE, + NGHTTP3_CTRL_STREAM_STATE_PRIORITY_UPDATE_PRI_ELEM_ID, + NGHTTP3_CTRL_STREAM_STATE_PRIORITY_UPDATE, +} nghttp3_ctrl_stream_state; + +typedef enum nghttp3_req_stream_state { + NGHTTP3_REQ_STREAM_STATE_FRAME_TYPE, + NGHTTP3_REQ_STREAM_STATE_FRAME_LENGTH, + NGHTTP3_REQ_STREAM_STATE_DATA, + NGHTTP3_REQ_STREAM_STATE_HEADERS, + NGHTTP3_REQ_STREAM_STATE_IGN_FRAME, + NGHTTP3_REQ_STREAM_STATE_IGN_REST, +} nghttp3_req_stream_state; + +typedef struct nghttp3_varint_read_state { + int64_t acc; + size_t left; +} nghttp3_varint_read_state; + +typedef struct nghttp3_stream_read_state { + nghttp3_varint_read_state rvint; + nghttp3_frame fr; + int64_t left; + int state; +} nghttp3_stream_read_state; + +/* NGHTTP3_STREAM_FLAG_NONE indicates that no flag is set. */ +#define NGHTTP3_STREAM_FLAG_NONE 0x0000u +/* NGHTTP3_STREAM_FLAG_TYPE_IDENTIFIED is set when a unidirectional + stream type is identified. */ +#define NGHTTP3_STREAM_FLAG_TYPE_IDENTIFIED 0x0001u +/* NGHTTP3_STREAM_FLAG_FC_BLOCKED indicates that stream is blocked by + QUIC flow control. */ +#define NGHTTP3_STREAM_FLAG_FC_BLOCKED 0x0002u +/* NGHTTP3_STREAM_FLAG_READ_DATA_BLOCKED indicates that application is + temporarily unable to provide data. */ +#define NGHTTP3_STREAM_FLAG_READ_DATA_BLOCKED 0x0004u +/* NGHTTP3_STREAM_FLAG_WRITE_END_STREAM indicates that application + finished to feed outgoing data. */ +#define NGHTTP3_STREAM_FLAG_WRITE_END_STREAM 0x0008u +/* NGHTTP3_STREAM_FLAG_QPACK_DECODE_BLOCKED indicates that stream is + blocked due to QPACK decoding. */ +#define NGHTTP3_STREAM_FLAG_QPACK_DECODE_BLOCKED 0x0010u +/* NGHTTP3_STREAM_FLAG_READ_EOF indicates that remote endpoint sent + fin. */ +#define NGHTTP3_STREAM_FLAG_READ_EOF 0x0020u +/* NGHTTP3_STREAM_FLAG_CLOSED indicates that QUIC stream was closed. + nghttp3_stream object can still alive because it might be blocked + by QPACK decoder. */ +#define NGHTTP3_STREAM_FLAG_CLOSED 0x0040u +/* NGHTTP3_STREAM_FLAG_SHUT_WR indicates that any further write + operation to a stream is prohibited. */ +#define NGHTTP3_STREAM_FLAG_SHUT_WR 0x0100u +/* NGHTTP3_STREAM_FLAG_SHUT_RD indicates that a read-side stream is + closed abruptly and any incoming and pending stream data is just + discarded for a stream. */ +#define NGHTTP3_STREAM_FLAG_SHUT_RD 0x0200u +/* NGHTTP3_STREAM_FLAG_SERVER_PRIORITY_SET indicates that server + overrides stream priority. */ +#define NGHTTP3_STREAM_FLAG_SERVER_PRIORITY_SET 0x0400u +/* NGHTTP3_STREAM_FLAG_PRIORITY_UPDATE_RECVED indicates that server + received PRIORITY_UPDATE frame for this stream. */ +#define NGHTTP3_STREAM_FLAG_PRIORITY_UPDATE_RECVED 0x0800u +/* NGHTTP3_STREAM_FLAG_HTTP_ERROR indicates that + NGHTTP3_ERR_MALFORMED_HTTP_HEADER error is encountered while + processing incoming HTTP fields. */ +#define NGHTTP3_STREAM_FLAG_HTTP_ERROR 0x1000u + +typedef enum nghttp3_stream_http_state { + NGHTTP3_HTTP_STATE_NONE, + NGHTTP3_HTTP_STATE_REQ_INITIAL, + NGHTTP3_HTTP_STATE_REQ_BEGIN, + NGHTTP3_HTTP_STATE_REQ_HEADERS_BEGIN, + NGHTTP3_HTTP_STATE_REQ_HEADERS_END, + NGHTTP3_HTTP_STATE_REQ_DATA_BEGIN, + NGHTTP3_HTTP_STATE_REQ_DATA_END, + NGHTTP3_HTTP_STATE_REQ_TRAILERS_BEGIN, + NGHTTP3_HTTP_STATE_REQ_TRAILERS_END, + NGHTTP3_HTTP_STATE_REQ_END, + NGHTTP3_HTTP_STATE_RESP_INITIAL, + NGHTTP3_HTTP_STATE_RESP_BEGIN, + NGHTTP3_HTTP_STATE_RESP_HEADERS_BEGIN, + NGHTTP3_HTTP_STATE_RESP_HEADERS_END, + NGHTTP3_HTTP_STATE_RESP_DATA_BEGIN, + NGHTTP3_HTTP_STATE_RESP_DATA_END, + NGHTTP3_HTTP_STATE_RESP_TRAILERS_BEGIN, + NGHTTP3_HTTP_STATE_RESP_TRAILERS_END, + NGHTTP3_HTTP_STATE_RESP_END, +} nghttp3_stream_http_state; + +typedef enum nghttp3_stream_http_event { + NGHTTP3_HTTP_EVENT_DATA_BEGIN, + NGHTTP3_HTTP_EVENT_DATA_END, + NGHTTP3_HTTP_EVENT_HEADERS_BEGIN, + NGHTTP3_HTTP_EVENT_HEADERS_END, + NGHTTP3_HTTP_EVENT_MSG_END, +} nghttp3_stream_http_event; + +typedef struct nghttp3_stream nghttp3_stream; + +/* + * nghttp3_stream_acked_data is a callback function which is invoked + * when data sent on stream denoted by |stream_id| supplied from + * application is acknowledged by remote endpoint. The number of + * bytes acknowledged is given in |datalen|. + * + * The implementation of this callback must return 0 if it succeeds. + * Returning NGHTTP3_ERR_CALLBACK_FAILURE will return to the caller + * immediately. Any values other than 0 is treated as + * NGHTTP3_ERR_CALLBACK_FAILURE. + */ +typedef int (*nghttp3_stream_acked_data)(nghttp3_stream *stream, + int64_t stream_id, uint64_t datalen, + void *user_data); + +typedef struct nghttp3_stream_callbacks { + nghttp3_stream_acked_data acked_data; +} nghttp3_stream_callbacks; + +typedef struct nghttp3_http_state { + /* content_length is the value of received content-length header + field. */ + int64_t content_length; + /* recv_content_length is the number of body bytes received so + far. */ + int64_t recv_content_length; + nghttp3_pri pri; + /* status_code is HTTP status code received. This field is used + if connection is initialized as client. */ + int32_t status_code; + uint32_t flags; +} nghttp3_http_state; + +struct nghttp3_stream { + union { + struct { + const nghttp3_mem *mem; + nghttp3_objalloc *out_chunk_objalloc; + nghttp3_objalloc *stream_objalloc; + nghttp3_tnode node; + nghttp3_pq_entry qpack_blocked_pe; + nghttp3_stream_callbacks callbacks; + nghttp3_ringbuf frq; + nghttp3_ringbuf chunks; + nghttp3_ringbuf outq; + /* inq stores the stream raw data which cannot be read because + stream is blocked by QPACK decoder. */ + nghttp3_ringbuf inq; + nghttp3_qpack_stream_context qpack_sctx; + /* conn is a reference to underlying connection. It could be NULL + if stream is not a request stream. */ + nghttp3_conn *conn; + void *user_data; + /* unsent_bytes is the number of bytes in outq not written yet */ + uint64_t unsent_bytes; + /* outq_idx is an index into outq where next write is made. */ + size_t outq_idx; + /* outq_offset is write offset relative to the element at outq_idx + in outq. */ + uint64_t outq_offset; + /* ack_base is the number of bytes acknowledged by a remote + endpoint where the first element in outq is positioned at. */ + uint64_t ack_base; + /* ack_offset is the number of bytes acknowledged by a remote + endpoint so far. */ + uint64_t ack_offset; + uint64_t unscheduled_nwrite; + nghttp3_stream_type type; + nghttp3_stream_read_state rstate; + /* error_code indicates the reason of closure of this stream. */ + uint64_t error_code; + + struct { + uint64_t offset; + nghttp3_stream_http_state hstate; + } tx; + + struct { + nghttp3_stream_http_state hstate; + nghttp3_http_state http; + } rx; + + uint16_t flags; + }; + + nghttp3_opl_entry oplent; + }; +}; + +nghttp3_objalloc_decl(stream, nghttp3_stream, oplent); + +typedef struct nghttp3_frame_entry { + nghttp3_frame fr; + union { + struct { + nghttp3_settings *local_settings; + } settings; + struct { + nghttp3_data_reader dr; + } data; + } aux; +} nghttp3_frame_entry; + +int nghttp3_stream_new(nghttp3_stream **pstream, int64_t stream_id, + const nghttp3_stream_callbacks *callbacks, + nghttp3_objalloc *out_chunk_objalloc, + nghttp3_objalloc *stream_objalloc, + const nghttp3_mem *mem); + +void nghttp3_stream_del(nghttp3_stream *stream); + +void nghttp3_varint_read_state_reset(nghttp3_varint_read_state *rvint); + +void nghttp3_stream_read_state_reset(nghttp3_stream_read_state *rstate); + +nghttp3_ssize nghttp3_read_varint(nghttp3_varint_read_state *rvint, + const uint8_t *begin, const uint8_t *end, + int fin); + +int nghttp3_stream_frq_add(nghttp3_stream *stream, + const nghttp3_frame_entry *frent); + +int nghttp3_stream_fill_outq(nghttp3_stream *stream); + +int nghttp3_stream_write_stream_type(nghttp3_stream *stream); + +size_t nghttp3_stream_writev(nghttp3_stream *stream, int *pfin, + nghttp3_vec *vec, size_t veccnt); + +int nghttp3_stream_write_qpack_decoder_stream(nghttp3_stream *stream); + +int nghttp3_stream_outq_add(nghttp3_stream *stream, + const nghttp3_typed_buf *tbuf); + +int nghttp3_stream_write_headers(nghttp3_stream *stream, + nghttp3_frame_entry *frent); + +int nghttp3_stream_write_header_block(nghttp3_stream *stream, + nghttp3_qpack_encoder *qenc, + nghttp3_stream *qenc_stream, + nghttp3_buf *rbuf, nghttp3_buf *ebuf, + int64_t frame_type, const nghttp3_nv *nva, + size_t nvlen); + +int nghttp3_stream_write_data(nghttp3_stream *stream, int *peof, + nghttp3_frame_entry *frent); + +int nghttp3_stream_write_settings(nghttp3_stream *stream, + nghttp3_frame_entry *frent); + +int nghttp3_stream_write_goaway(nghttp3_stream *stream, + nghttp3_frame_entry *frent); + +int nghttp3_stream_write_priority_update(nghttp3_stream *stream, + nghttp3_frame_entry *frent); + +int nghttp3_stream_ensure_chunk(nghttp3_stream *stream, size_t need); + +nghttp3_buf *nghttp3_stream_get_chunk(nghttp3_stream *stream); + +int nghttp3_stream_is_blocked(nghttp3_stream *stream); + +void nghttp3_stream_add_outq_offset(nghttp3_stream *stream, size_t n); + +/* + * nghttp3_stream_outq_write_done returns nonzero if all contents in + * outq have been written. + */ +int nghttp3_stream_outq_write_done(nghttp3_stream *stream); + +/* + * nghttp2_stream_update_ack_offset updates the last acknowledged + * offset to |offset|. + */ +int nghttp3_stream_update_ack_offset(nghttp3_stream *stream, uint64_t offset); + +/* + * nghttp3_stream_is_active returns nonzero if |stream| is active. In + * other words, it has something to send. This function does not take + * into account its descendants. + */ +int nghttp3_stream_is_active(nghttp3_stream *stream); + +/* + * nghttp3_stream_require_schedule returns nonzero if |stream| should + * be scheduled. In other words, |stream| or its descendants have + * something to send. + */ +int nghttp3_stream_require_schedule(nghttp3_stream *stream); + +int nghttp3_stream_buffer_data(nghttp3_stream *stream, const uint8_t *src, + size_t srclen); + +size_t nghttp3_stream_get_buffered_datalen(nghttp3_stream *stream); + +int nghttp3_stream_ensure_qpack_stream_context(nghttp3_stream *stream); + +void nghttp3_stream_delete_qpack_stream_context(nghttp3_stream *stream); + +int nghttp3_stream_transit_rx_http_state(nghttp3_stream *stream, + nghttp3_stream_http_event event); + +int nghttp3_stream_empty_headers_allowed(nghttp3_stream *stream); + +/* + * nghttp3_stream_uni returns nonzero if stream identified by + * |stream_id| is unidirectional. + */ +int nghttp3_stream_uni(int64_t stream_id); + +/* + * nghttp3_client_stream_bidi returns nonzero if stream identified by + * |stream_id| is client initiated bidirectional stream. + */ +int nghttp3_client_stream_bidi(int64_t stream_id); + +/* + * nghttp3_client_stream_uni returns nonzero if stream identified by + * |stream_id| is client initiated unidirectional stream. + */ +int nghttp3_client_stream_uni(int64_t stream_id); + +/* + * nghttp3_server_stream_uni returns nonzero if stream identified by + * |stream_id| is server initiated unidirectional stream. + */ +int nghttp3_server_stream_uni(int64_t stream_id); + +#endif /* !defined(NGHTTP3_STREAM_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_tnode.c b/contrib/libs/nghttp3/lib/nghttp3_tnode.c new file mode 100644 index 0000000000..eae847e7a9 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_tnode.c @@ -0,0 +1,95 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_tnode.h" + +#include <assert.h> + +#include "nghttp3_macro.h" +#include "nghttp3_stream.h" +#include "nghttp3_conn.h" +#include "nghttp3_conv.h" + +void nghttp3_tnode_init(nghttp3_tnode *tnode, int64_t id) { + tnode->pe.index = NGHTTP3_PQ_BAD_INDEX; + tnode->id = id; + tnode->cycle = 0; + tnode->pri.urgency = NGHTTP3_DEFAULT_URGENCY; + tnode->pri.inc = 0; +} + +void nghttp3_tnode_free(nghttp3_tnode *tnode) { (void)tnode; } + +static void tnode_unschedule(nghttp3_tnode *tnode, nghttp3_pq *pq) { + assert(tnode->pe.index != NGHTTP3_PQ_BAD_INDEX); + + nghttp3_pq_remove(pq, &tnode->pe); + tnode->pe.index = NGHTTP3_PQ_BAD_INDEX; +} + +void nghttp3_tnode_unschedule(nghttp3_tnode *tnode, nghttp3_pq *pq) { + if (tnode->pe.index == NGHTTP3_PQ_BAD_INDEX) { + return; + } + + tnode_unschedule(tnode, pq); +} + +static uint64_t pq_get_first_cycle(nghttp3_pq *pq) { + nghttp3_tnode *top; + + if (nghttp3_pq_empty(pq)) { + return 0; + } + + top = nghttp3_struct_of(nghttp3_pq_top(pq), nghttp3_tnode, pe); + return top->cycle; +} + +int nghttp3_tnode_schedule(nghttp3_tnode *tnode, nghttp3_pq *pq, + uint64_t nwrite) { + uint64_t penalty = nwrite / NGHTTP3_STREAM_MIN_WRITELEN; + + if (tnode->pe.index == NGHTTP3_PQ_BAD_INDEX) { + tnode->cycle = + pq_get_first_cycle(pq) + + ((nwrite == 0 || !tnode->pri.inc) ? 0 : nghttp3_max_uint64(1, penalty)); + } else if (nwrite > 0) { + if (!tnode->pri.inc || nghttp3_pq_size(pq) == 1) { + return 0; + } + + nghttp3_pq_remove(pq, &tnode->pe); + tnode->pe.index = NGHTTP3_PQ_BAD_INDEX; + tnode->cycle += nghttp3_max_uint64(1, penalty); + } else { + return 0; + } + + return nghttp3_pq_push(pq, &tnode->pe); +} + +int nghttp3_tnode_is_scheduled(nghttp3_tnode *tnode) { + return tnode->pe.index != NGHTTP3_PQ_BAD_INDEX; +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_tnode.h b/contrib/libs/nghttp3/lib/nghttp3_tnode.h new file mode 100644 index 0000000000..c13af52fdc --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_tnode.h @@ -0,0 +1,66 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_TNODE_H +#define NGHTTP3_TNODE_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#include "nghttp3_pq.h" + +#define NGHTTP3_TNODE_MAX_CYCLE_GAP (1llu << 24) + +typedef struct nghttp3_tnode { + nghttp3_pq_entry pe; + size_t num_children; + int64_t id; + uint64_t cycle; + /* pri is a stream priority produced by nghttp3_pri_to_uint8. */ + nghttp3_pri pri; +} nghttp3_tnode; + +void nghttp3_tnode_init(nghttp3_tnode *tnode, int64_t id); + +void nghttp3_tnode_free(nghttp3_tnode *tnode); + +void nghttp3_tnode_unschedule(nghttp3_tnode *tnode, nghttp3_pq *pq); + +/* + * nghttp3_tnode_schedule schedules |tnode| using |nwrite| as penalty. + * If |tnode| has already been scheduled, it is rescheduled by the + * amount of |nwrite|. + */ +int nghttp3_tnode_schedule(nghttp3_tnode *tnode, nghttp3_pq *pq, + uint64_t nwrite); + +/* + * nghttp3_tnode_is_scheduled returns nonzero if |tnode| is scheduled. + */ +int nghttp3_tnode_is_scheduled(nghttp3_tnode *tnode); + +#endif /* !defined(NGHTTP3_TNODE_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_unreachable.c b/contrib/libs/nghttp3/lib/nghttp3_unreachable.c new file mode 100644 index 0000000000..8adeeb4931 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_unreachable.c @@ -0,0 +1,72 @@ +/* + * nghttp3 + * + * Copyright (c) 2022 nghttp3 contributors + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_unreachable.h" + +#include <stdio.h> +#include <errno.h> +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif /* defined(HAVE_UNISTD_H) */ +#include <stdlib.h> +#ifdef WIN32 +# include <io.h> +#endif /* defined(WIN32) */ + +void nghttp3_unreachable_fail(const char *file, int line, const char *func) { + char *buf; + size_t buflen; + int rv; + +#define NGHTTP3_UNREACHABLE_TEMPLATE "%s:%d %s: Unreachable.\n" + + rv = snprintf(NULL, 0, NGHTTP3_UNREACHABLE_TEMPLATE, file, line, func); + if (rv < 0) { + abort(); + } + + /* here we explicitly use system malloc */ + buflen = (size_t)rv + 1; + buf = malloc(buflen); + if (buf == NULL) { + abort(); + } + + rv = snprintf(buf, buflen, NGHTTP3_UNREACHABLE_TEMPLATE, file, line, func); + if (rv < 0) { + abort(); + } + +#ifndef WIN32 + while (write(STDERR_FILENO, buf, (size_t)rv) == -1 && errno == EINTR) + ; +#else /* defined(WIN32) */ + _write(_fileno(stderr), buf, (unsigned int)rv); +#endif /* defined(WIN32) */ + + free(buf); + + abort(); +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_unreachable.h b/contrib/libs/nghttp3/lib/nghttp3_unreachable.h new file mode 100644 index 0000000000..c609d7ed72 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_unreachable.h @@ -0,0 +1,53 @@ +/* + * nghttp3 + * + * Copyright (c) 2022 nghttp3 contributors + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_UNREACHABLE_H +#define NGHTTP3_UNREACHABLE_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +#ifdef __FILE_NAME__ +# define NGHTTP3_FILE_NAME __FILE_NAME__ +#else /* !defined(__FILE_NAME__) */ +# define NGHTTP3_FILE_NAME "(file)" +#endif /* !defined(__FILE_NAME__) */ + +#define nghttp3_unreachable() \ + nghttp3_unreachable_fail(NGHTTP3_FILE_NAME, __LINE__, __func__) + +#ifdef _MSC_VER +__declspec(noreturn) +#endif /* defined(_MSC_VER) */ + void nghttp3_unreachable_fail(const char *file, int line, const char *func) +#ifndef _MSC_VER + __attribute__((noreturn)) +#endif /* !defined(_MSC_VER) */ + ; + +#endif /* !defined(NGHTTP3_UNREACHABLE_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_vec.c b/contrib/libs/nghttp3/lib/nghttp3_vec.c new file mode 100644 index 0000000000..ab58ff5832 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_vec.c @@ -0,0 +1,55 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nghttp3_vec.h" +#include "nghttp3_macro.h" + +uint64_t nghttp3_vec_len(const nghttp3_vec *vec, size_t n) { + size_t i; + uint64_t res = 0; + + for (i = 0; i < n; ++i) { + res += vec[i].len; + } + + return res; +} + +int64_t nghttp3_vec_len_varint(const nghttp3_vec *vec, size_t n) { + uint64_t res = 0; + size_t len; + size_t i; + + for (i = 0; i < n; ++i) { + len = vec[i].len; + if (len > NGHTTP3_MAX_VARINT - res) { + return -1; + } + + res += len; + } + + return (int64_t)res; +} diff --git a/contrib/libs/nghttp3/lib/nghttp3_vec.h b/contrib/libs/nghttp3/lib/nghttp3_vec.h new file mode 100644 index 0000000000..f36eabc105 --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_vec.h @@ -0,0 +1,41 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGHTTP3_VEC_H +#define NGHTTP3_VEC_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +/* + * nghttp3_vec_len_varint is similar to nghttp3_vec_len, but it + * returns -1 if the sum of the length exceeds NGHTTP3_MAX_VARINT. + */ +int64_t nghttp3_vec_len_varint(const nghttp3_vec *vec, size_t n); + +#endif /* !defined(NGHTTP3_VEC_H) */ diff --git a/contrib/libs/nghttp3/lib/nghttp3_version.c b/contrib/libs/nghttp3/lib/nghttp3_version.c new file mode 100644 index 0000000000..939821d84e --- /dev/null +++ b/contrib/libs/nghttp3/lib/nghttp3_version.c @@ -0,0 +1,39 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <nghttp3/nghttp3.h> + +static nghttp3_info version = {NGHTTP3_VERSION_AGE, NGHTTP3_VERSION_NUM, + NGHTTP3_VERSION}; + +const nghttp3_info *nghttp3_version(int least_version) { + if (least_version > NGHTTP3_VERSION_NUM) { + return NULL; + } + return &version; +} diff --git a/contrib/libs/nghttp3/lib/sfparse/COPYING b/contrib/libs/nghttp3/lib/sfparse/COPYING new file mode 100644 index 0000000000..8212d82d83 --- /dev/null +++ b/contrib/libs/nghttp3/lib/sfparse/COPYING @@ -0,0 +1,22 @@ +The MIT License + +Copyright (c) 2023 sfparse contributors + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/contrib/libs/nghttp3/lib/sfparse/sfparse.c b/contrib/libs/nghttp3/lib/sfparse/sfparse.c new file mode 100644 index 0000000000..d0328cf40c --- /dev/null +++ b/contrib/libs/nghttp3/lib/sfparse/sfparse.c @@ -0,0 +1,1517 @@ +/* + * sfparse + * + * Copyright (c) 2023 sfparse contributors + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2015 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "sfparse.h" + +#include <string.h> +#include <assert.h> +#include <stdlib.h> + +#define SF_STATE_DICT 0x08u +#define SF_STATE_LIST 0x10u +#define SF_STATE_ITEM 0x18u + +#define SF_STATE_INNER_LIST 0x04u + +#define SF_STATE_BEFORE 0x00u +#define SF_STATE_BEFORE_PARAMS 0x01u +#define SF_STATE_PARAMS 0x02u +#define SF_STATE_AFTER 0x03u + +#define SF_STATE_OP_MASK 0x03u + +#define SF_SET_STATE_AFTER(NAME) (SF_STATE_##NAME | SF_STATE_AFTER) +#define SF_SET_STATE_BEFORE_PARAMS(NAME) \ + (SF_STATE_##NAME | SF_STATE_BEFORE_PARAMS) +#define SF_SET_STATE_INNER_LIST_BEFORE(NAME) \ + (SF_STATE_##NAME | SF_STATE_INNER_LIST | SF_STATE_BEFORE) + +#define SF_STATE_DICT_AFTER SF_SET_STATE_AFTER(DICT) +#define SF_STATE_DICT_BEFORE_PARAMS SF_SET_STATE_BEFORE_PARAMS(DICT) +#define SF_STATE_DICT_INNER_LIST_BEFORE SF_SET_STATE_INNER_LIST_BEFORE(DICT) + +#define SF_STATE_LIST_AFTER SF_SET_STATE_AFTER(LIST) +#define SF_STATE_LIST_BEFORE_PARAMS SF_SET_STATE_BEFORE_PARAMS(LIST) +#define SF_STATE_LIST_INNER_LIST_BEFORE SF_SET_STATE_INNER_LIST_BEFORE(LIST) + +#define SF_STATE_ITEM_AFTER SF_SET_STATE_AFTER(ITEM) +#define SF_STATE_ITEM_BEFORE_PARAMS SF_SET_STATE_BEFORE_PARAMS(ITEM) +#define SF_STATE_ITEM_INNER_LIST_BEFORE SF_SET_STATE_INNER_LIST_BEFORE(ITEM) + +#define SF_STATE_INITIAL 0x00u + +#define DIGIT_CASES \ + case '0': \ + case '1': \ + case '2': \ + case '3': \ + case '4': \ + case '5': \ + case '6': \ + case '7': \ + case '8': \ + case '9' + +#define LCALPHA_CASES \ + case 'a': \ + case 'b': \ + case 'c': \ + case 'd': \ + case 'e': \ + case 'f': \ + case 'g': \ + case 'h': \ + case 'i': \ + case 'j': \ + case 'k': \ + case 'l': \ + case 'm': \ + case 'n': \ + case 'o': \ + case 'p': \ + case 'q': \ + case 'r': \ + case 's': \ + case 't': \ + case 'u': \ + case 'v': \ + case 'w': \ + case 'x': \ + case 'y': \ + case 'z' + +#define UCALPHA_CASES \ + case 'A': \ + case 'B': \ + case 'C': \ + case 'D': \ + case 'E': \ + case 'F': \ + case 'G': \ + case 'H': \ + case 'I': \ + case 'J': \ + case 'K': \ + case 'L': \ + case 'M': \ + case 'N': \ + case 'O': \ + case 'P': \ + case 'Q': \ + case 'R': \ + case 'S': \ + case 'T': \ + case 'U': \ + case 'V': \ + case 'W': \ + case 'X': \ + case 'Y': \ + case 'Z' + +#define ALPHA_CASES \ + UCALPHA_CASES: \ + LCALPHA_CASES + +#define TOKEN_CASES \ + case '!': \ + case '#': \ + case '$': \ + case '%': \ + case '&': \ + case '\'': \ + case '*': \ + case '+': \ + case '-': \ + case '.': \ + case '/': \ + DIGIT_CASES: \ + case ':': \ + UCALPHA_CASES: \ + case '^': \ + case '_': \ + case '`': \ + LCALPHA_CASES: \ + case '|': \ + case '~' + +#define LCHEXALPHA_CASES \ + case 'a': \ + case 'b': \ + case 'c': \ + case 'd': \ + case 'e': \ + case 'f' + +#define X00_1F_CASES \ + case 0x00: \ + case 0x01: \ + case 0x02: \ + case 0x03: \ + case 0x04: \ + case 0x05: \ + case 0x06: \ + case 0x07: \ + case 0x08: \ + case 0x09: \ + case 0x0a: \ + case 0x0b: \ + case 0x0c: \ + case 0x0d: \ + case 0x0e: \ + case 0x0f: \ + case 0x10: \ + case 0x11: \ + case 0x12: \ + case 0x13: \ + case 0x14: \ + case 0x15: \ + case 0x16: \ + case 0x17: \ + case 0x18: \ + case 0x19: \ + case 0x1a: \ + case 0x1b: \ + case 0x1c: \ + case 0x1d: \ + case 0x1e: \ + case 0x1f + +#define X20_21_CASES \ + case ' ': \ + case '!' + +#define X23_5B_CASES \ + case '#': \ + case '$': \ + case '%': \ + case '&': \ + case '\'': \ + case '(': \ + case ')': \ + case '*': \ + case '+': \ + case ',': \ + case '-': \ + case '.': \ + case '/': \ + DIGIT_CASES: \ + case ':': \ + case ';': \ + case '<': \ + case '=': \ + case '>': \ + case '?': \ + case '@': \ + UCALPHA_CASES: \ + case '[' + +#define X5D_7E_CASES \ + case ']': \ + case '^': \ + case '_': \ + case '`': \ + LCALPHA_CASES: \ + case '{': \ + case '|': \ + case '}': \ + case '~' + +#define X7F_FF_CASES \ + case 0x7f: \ + case 0x80: \ + case 0x81: \ + case 0x82: \ + case 0x83: \ + case 0x84: \ + case 0x85: \ + case 0x86: \ + case 0x87: \ + case 0x88: \ + case 0x89: \ + case 0x8a: \ + case 0x8b: \ + case 0x8c: \ + case 0x8d: \ + case 0x8e: \ + case 0x8f: \ + case 0x90: \ + case 0x91: \ + case 0x92: \ + case 0x93: \ + case 0x94: \ + case 0x95: \ + case 0x96: \ + case 0x97: \ + case 0x98: \ + case 0x99: \ + case 0x9a: \ + case 0x9b: \ + case 0x9c: \ + case 0x9d: \ + case 0x9e: \ + case 0x9f: \ + case 0xa0: \ + case 0xa1: \ + case 0xa2: \ + case 0xa3: \ + case 0xa4: \ + case 0xa5: \ + case 0xa6: \ + case 0xa7: \ + case 0xa8: \ + case 0xa9: \ + case 0xaa: \ + case 0xab: \ + case 0xac: \ + case 0xad: \ + case 0xae: \ + case 0xaf: \ + case 0xb0: \ + case 0xb1: \ + case 0xb2: \ + case 0xb3: \ + case 0xb4: \ + case 0xb5: \ + case 0xb6: \ + case 0xb7: \ + case 0xb8: \ + case 0xb9: \ + case 0xba: \ + case 0xbb: \ + case 0xbc: \ + case 0xbd: \ + case 0xbe: \ + case 0xbf: \ + case 0xc0: \ + case 0xc1: \ + case 0xc2: \ + case 0xc3: \ + case 0xc4: \ + case 0xc5: \ + case 0xc6: \ + case 0xc7: \ + case 0xc8: \ + case 0xc9: \ + case 0xca: \ + case 0xcb: \ + case 0xcc: \ + case 0xcd: \ + case 0xce: \ + case 0xcf: \ + case 0xd0: \ + case 0xd1: \ + case 0xd2: \ + case 0xd3: \ + case 0xd4: \ + case 0xd5: \ + case 0xd6: \ + case 0xd7: \ + case 0xd8: \ + case 0xd9: \ + case 0xda: \ + case 0xdb: \ + case 0xdc: \ + case 0xdd: \ + case 0xde: \ + case 0xdf: \ + case 0xe0: \ + case 0xe1: \ + case 0xe2: \ + case 0xe3: \ + case 0xe4: \ + case 0xe5: \ + case 0xe6: \ + case 0xe7: \ + case 0xe8: \ + case 0xe9: \ + case 0xea: \ + case 0xeb: \ + case 0xec: \ + case 0xed: \ + case 0xee: \ + case 0xef: \ + case 0xf0: \ + case 0xf1: \ + case 0xf2: \ + case 0xf3: \ + case 0xf4: \ + case 0xf5: \ + case 0xf6: \ + case 0xf7: \ + case 0xf8: \ + case 0xf9: \ + case 0xfa: \ + case 0xfb: \ + case 0xfc: \ + case 0xfd: \ + case 0xfe: \ + case 0xff + +static int is_ws(uint8_t c) { + switch (c) { + case ' ': + case '\t': + return 1; + default: + return 0; + } +} + +static int parser_eof(sf_parser *sfp) { return sfp->pos == sfp->end; } + +static void parser_discard_ows(sf_parser *sfp) { + for (; !parser_eof(sfp) && is_ws(*sfp->pos); ++sfp->pos) + ; +} + +static void parser_discard_sp(sf_parser *sfp) { + for (; !parser_eof(sfp) && *sfp->pos == ' '; ++sfp->pos) + ; +} + +static void parser_set_op_state(sf_parser *sfp, uint32_t op) { + sfp->state &= ~SF_STATE_OP_MASK; + sfp->state |= op; +} + +static void parser_unset_inner_list_state(sf_parser *sfp) { + sfp->state &= ~SF_STATE_INNER_LIST; +} + +static int parser_key(sf_parser *sfp, sf_vec *dest) { + const uint8_t *base; + + switch (*sfp->pos) { + case '*': + LCALPHA_CASES: + break; + default: + return SF_ERR_PARSE_ERROR; + } + + base = sfp->pos++; + + for (; !parser_eof(sfp); ++sfp->pos) { + switch (*sfp->pos) { + case '_': + case '-': + case '.': + case '*': + DIGIT_CASES: + LCALPHA_CASES: + continue; + } + + break; + } + + if (dest) { + dest->base = (uint8_t *)base; + dest->len = (size_t)(sfp->pos - dest->base); + } + + return 0; +} + +static int parser_number(sf_parser *sfp, sf_value *dest) { + int sign = 1; + int64_t value = 0; + size_t len = 0; + size_t fpos = 0; + + if (*sfp->pos == '-') { + ++sfp->pos; + if (parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + sign = -1; + } + + assert(!parser_eof(sfp)); + + for (; !parser_eof(sfp); ++sfp->pos) { + switch (*sfp->pos) { + DIGIT_CASES: + if (++len > 15) { + return SF_ERR_PARSE_ERROR; + } + + value *= 10; + value += *sfp->pos - '0'; + + continue; + } + + break; + } + + if (len == 0) { + return SF_ERR_PARSE_ERROR; + } + + if (parser_eof(sfp) || *sfp->pos != '.') { + if (dest) { + dest->type = SF_TYPE_INTEGER; + dest->flags = SF_VALUE_FLAG_NONE; + dest->integer = value * sign; + } + + return 0; + } + + /* decimal */ + + if (len > 12) { + return SF_ERR_PARSE_ERROR; + } + + fpos = len; + + ++sfp->pos; + + for (; !parser_eof(sfp); ++sfp->pos) { + switch (*sfp->pos) { + DIGIT_CASES: + if (++len > 15) { + return SF_ERR_PARSE_ERROR; + } + + value *= 10; + value += *sfp->pos - '0'; + + continue; + } + + break; + } + + if (fpos == len || len - fpos > 3) { + return SF_ERR_PARSE_ERROR; + } + + if (dest) { + dest->type = SF_TYPE_DECIMAL; + dest->flags = SF_VALUE_FLAG_NONE; + dest->decimal.numer = value * sign; + + switch (len - fpos) { + case 1: + dest->decimal.denom = 10; + + break; + case 2: + dest->decimal.denom = 100; + + break; + case 3: + dest->decimal.denom = 1000; + + break; + } + } + + return 0; +} + +static int parser_date(sf_parser *sfp, sf_value *dest) { + int rv; + sf_value val; + + /* The first byte has already been validated by the caller. */ + assert('@' == *sfp->pos); + + ++sfp->pos; + + if (parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + rv = parser_number(sfp, &val); + if (rv != 0) { + return rv; + } + + if (val.type != SF_TYPE_INTEGER) { + return SF_ERR_PARSE_ERROR; + } + + if (dest) { + *dest = val; + dest->type = SF_TYPE_DATE; + } + + return 0; +} + +static int parser_string(sf_parser *sfp, sf_value *dest) { + const uint8_t *base; + uint32_t flags = SF_VALUE_FLAG_NONE; + + /* The first byte has already been validated by the caller. */ + assert('"' == *sfp->pos); + + base = ++sfp->pos; + + for (; !parser_eof(sfp); ++sfp->pos) { + switch (*sfp->pos) { + X20_21_CASES: + X23_5B_CASES: + X5D_7E_CASES: + break; + case '\\': + ++sfp->pos; + if (parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + switch (*sfp->pos) { + case '"': + case '\\': + flags = SF_VALUE_FLAG_ESCAPED_STRING; + + break; + default: + return SF_ERR_PARSE_ERROR; + } + + break; + case '"': + if (dest) { + dest->type = SF_TYPE_STRING; + dest->flags = flags; + dest->vec.len = (size_t)(sfp->pos - base); + dest->vec.base = dest->vec.len == 0 ? NULL : (uint8_t *)base; + } + + ++sfp->pos; + + return 0; + default: + return SF_ERR_PARSE_ERROR; + } + } + + return SF_ERR_PARSE_ERROR; +} + +static int parser_token(sf_parser *sfp, sf_value *dest) { + const uint8_t *base; + + /* The first byte has already been validated by the caller. */ + base = sfp->pos++; + + for (; !parser_eof(sfp); ++sfp->pos) { + switch (*sfp->pos) { + TOKEN_CASES: + continue; + } + + break; + } + + if (dest) { + dest->type = SF_TYPE_TOKEN; + dest->flags = SF_VALUE_FLAG_NONE; + dest->vec.base = (uint8_t *)base; + dest->vec.len = (size_t)(sfp->pos - base); + } + + return 0; +} + +static int parser_byteseq(sf_parser *sfp, sf_value *dest) { + const uint8_t *base; + + /* The first byte has already been validated by the caller. */ + assert(':' == *sfp->pos); + + base = ++sfp->pos; + + for (; !parser_eof(sfp); ++sfp->pos) { + switch (*sfp->pos) { + case '+': + case '/': + DIGIT_CASES: + ALPHA_CASES: + continue; + case '=': + switch ((sfp->pos - base) & 0x3) { + case 0: + case 1: + return SF_ERR_PARSE_ERROR; + case 2: + ++sfp->pos; + + if (parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + if (*sfp->pos == '=') { + ++sfp->pos; + } + + break; + case 3: + ++sfp->pos; + + break; + } + + if (parser_eof(sfp) || *sfp->pos != ':') { + return SF_ERR_PARSE_ERROR; + } + + goto fin; + case ':': + if (((sfp->pos - base) & 0x3) == 1) { + return SF_ERR_PARSE_ERROR; + } + + goto fin; + default: + return SF_ERR_PARSE_ERROR; + } + } + + return SF_ERR_PARSE_ERROR; + +fin: + if (dest) { + dest->type = SF_TYPE_BYTESEQ; + dest->flags = SF_VALUE_FLAG_NONE; + dest->vec.len = (size_t)(sfp->pos - base); + dest->vec.base = dest->vec.len == 0 ? NULL : (uint8_t *)base; + } + + ++sfp->pos; + + return 0; +} + +static int parser_boolean(sf_parser *sfp, sf_value *dest) { + int b; + + /* The first byte has already been validated by the caller. */ + assert('?' == *sfp->pos); + + ++sfp->pos; + + if (parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + switch (*sfp->pos) { + case '0': + b = 0; + + break; + case '1': + b = 1; + + break; + default: + return SF_ERR_PARSE_ERROR; + } + + ++sfp->pos; + + if (dest) { + dest->type = SF_TYPE_BOOLEAN; + dest->flags = SF_VALUE_FLAG_NONE; + dest->boolean = b; + } + + return 0; +} + +static int pctdecode(uint8_t *pc, const uint8_t **ppos) { + uint8_t c, b = **ppos; + + switch (b) { + DIGIT_CASES: + c = (uint8_t)((b - '0') << 4); + + break; + LCHEXALPHA_CASES: + c = (uint8_t)((b - 'a' + 10) << 4); + + break; + default: + return -1; + } + + b = *++*ppos; + + switch (b) { + DIGIT_CASES: + c |= (uint8_t)(b - '0'); + + break; + LCHEXALPHA_CASES: + c |= (uint8_t)(b - 'a' + 10); + + break; + default: + return -1; + } + + *pc = c; + ++*ppos; + + return 0; +} + +/* Start of utf8 dfa */ +/* Copyright (c) 2008-2010 Bjoern Hoehrmann <bjoern@hoehrmann.de> + * See http://bjoern.hoehrmann.de/utf-8/decoder/dfa/ for details. + * + * Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de> + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, + * modify, merge, publish, distribute, sublicense, and/or sell copies + * of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#define UTF8_ACCEPT 0 +#define UTF8_REJECT 12 + +/* clang-format off */ +static const uint8_t utf8d[] = { + /* + * The first part of the table maps bytes to character classes that + * to reduce the size of the transition table and create bitmasks. + */ + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, + 8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, + 10,3,3,3,3,3,3,3,3,3,3,3,3,4,3,3, 11,6,6,6,5,8,8,8,8,8,8,8,8,8,8,8, + + /* + * The second part is a transition table that maps a combination + * of a state of the automaton and a character class to a state. + */ + 0,12,24,36,60,96,84,12,12,12,48,72, 12,12,12,12,12,12,12,12,12,12,12,12, + 12, 0,12,12,12,12,12, 0,12, 0,12,12, 12,24,12,12,12,12,12,24,12,24,12,12, + 12,12,12,12,12,12,12,24,12,12,12,12, 12,24,12,12,12,12,12,12,12,24,12,12, + 12,12,12,12,12,12,12,36,12,36,12,12, 12,36,12,12,12,12,12,36,12,36,12,12, + 12,36,12,12,12,12,12,12,12,12,12,12, +}; +/* clang-format on */ + +static void utf8_decode(uint32_t *state, uint8_t byte) { + *state = utf8d[256 + *state + utf8d[byte]]; +} + +/* End of utf8 dfa */ + +static int parser_dispstring(sf_parser *sfp, sf_value *dest) { + const uint8_t *base; + uint8_t c; + uint32_t utf8state = UTF8_ACCEPT; + + assert('%' == *sfp->pos); + + ++sfp->pos; + + if (parser_eof(sfp) || *sfp->pos != '"') { + return SF_ERR_PARSE_ERROR; + } + + base = ++sfp->pos; + + for (; !parser_eof(sfp);) { + switch (*sfp->pos) { + X00_1F_CASES: + X7F_FF_CASES: + return SF_ERR_PARSE_ERROR; + case '%': + ++sfp->pos; + + if (sfp->pos + 2 > sfp->end) { + return SF_ERR_PARSE_ERROR; + } + + if (pctdecode(&c, &sfp->pos) != 0) { + return SF_ERR_PARSE_ERROR; + } + + utf8_decode(&utf8state, c); + if (utf8state == UTF8_REJECT) { + return SF_ERR_PARSE_ERROR; + } + + break; + case '"': + if (utf8state != UTF8_ACCEPT) { + return SF_ERR_PARSE_ERROR; + } + + if (dest) { + dest->type = SF_TYPE_DISPSTRING; + dest->flags = SF_VALUE_FLAG_NONE; + dest->vec.len = (size_t)(sfp->pos - base); + dest->vec.base = dest->vec.len == 0 ? NULL : (uint8_t *)base; + } + + ++sfp->pos; + + return 0; + default: + if (utf8state != UTF8_ACCEPT) { + return SF_ERR_PARSE_ERROR; + } + + ++sfp->pos; + } + } + + return SF_ERR_PARSE_ERROR; +} + +static int parser_bare_item(sf_parser *sfp, sf_value *dest) { + switch (*sfp->pos) { + case '"': + return parser_string(sfp, dest); + case '-': + DIGIT_CASES: + return parser_number(sfp, dest); + case '@': + return parser_date(sfp, dest); + case ':': + return parser_byteseq(sfp, dest); + case '?': + return parser_boolean(sfp, dest); + case '*': + ALPHA_CASES: + return parser_token(sfp, dest); + case '%': + return parser_dispstring(sfp, dest); + default: + return SF_ERR_PARSE_ERROR; + } +} + +static int parser_skip_inner_list(sf_parser *sfp); + +int sf_parser_param(sf_parser *sfp, sf_vec *dest_key, sf_value *dest_value) { + int rv; + + switch (sfp->state & SF_STATE_OP_MASK) { + case SF_STATE_BEFORE: + rv = parser_skip_inner_list(sfp); + if (rv != 0) { + return rv; + } + + /* fall through */ + case SF_STATE_BEFORE_PARAMS: + parser_set_op_state(sfp, SF_STATE_PARAMS); + + break; + case SF_STATE_PARAMS: + break; + default: + assert(0); + abort(); + } + + if (parser_eof(sfp) || *sfp->pos != ';') { + parser_set_op_state(sfp, SF_STATE_AFTER); + + return SF_ERR_EOF; + } + + ++sfp->pos; + + parser_discard_sp(sfp); + if (parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + rv = parser_key(sfp, dest_key); + if (rv != 0) { + return rv; + } + + if (parser_eof(sfp) || *sfp->pos != '=') { + if (dest_value) { + dest_value->type = SF_TYPE_BOOLEAN; + dest_value->flags = SF_VALUE_FLAG_NONE; + dest_value->boolean = 1; + } + + return 0; + } + + ++sfp->pos; + + if (parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + return parser_bare_item(sfp, dest_value); +} + +static int parser_skip_params(sf_parser *sfp) { + int rv; + + for (;;) { + rv = sf_parser_param(sfp, NULL, NULL); + switch (rv) { + case 0: + break; + case SF_ERR_EOF: + return 0; + case SF_ERR_PARSE_ERROR: + return rv; + default: + assert(0); + abort(); + } + } +} + +int sf_parser_inner_list(sf_parser *sfp, sf_value *dest) { + int rv; + + switch (sfp->state & SF_STATE_OP_MASK) { + case SF_STATE_BEFORE: + parser_discard_sp(sfp); + if (parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + break; + case SF_STATE_BEFORE_PARAMS: + rv = parser_skip_params(sfp); + if (rv != 0) { + return rv; + } + + /* Technically, we are entering SF_STATE_AFTER, but we will set + another state without reading the state. */ + /* parser_set_op_state(sfp, SF_STATE_AFTER); */ + + /* fall through */ + case SF_STATE_AFTER: + if (parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + switch (*sfp->pos) { + case ' ': + parser_discard_sp(sfp); + if (parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + break; + case ')': + break; + default: + return SF_ERR_PARSE_ERROR; + } + + break; + default: + assert(0); + abort(); + } + + if (*sfp->pos == ')') { + ++sfp->pos; + + parser_unset_inner_list_state(sfp); + parser_set_op_state(sfp, SF_STATE_BEFORE_PARAMS); + + return SF_ERR_EOF; + } + + rv = parser_bare_item(sfp, dest); + if (rv != 0) { + return rv; + } + + parser_set_op_state(sfp, SF_STATE_BEFORE_PARAMS); + + return 0; +} + +static int parser_skip_inner_list(sf_parser *sfp) { + int rv; + + for (;;) { + rv = sf_parser_inner_list(sfp, NULL); + switch (rv) { + case 0: + break; + case SF_ERR_EOF: + return 0; + case SF_ERR_PARSE_ERROR: + return rv; + default: + assert(0); + abort(); + } + } +} + +static int parser_next_key_or_item(sf_parser *sfp) { + parser_discard_ows(sfp); + + if (parser_eof(sfp)) { + return SF_ERR_EOF; + } + + if (*sfp->pos != ',') { + return SF_ERR_PARSE_ERROR; + } + + ++sfp->pos; + + parser_discard_ows(sfp); + if (parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + return 0; +} + +static int parser_dict_value(sf_parser *sfp, sf_value *dest) { + int rv; + + if (parser_eof(sfp) || *(sfp->pos) != '=') { + /* Boolean true */ + if (dest) { + dest->type = SF_TYPE_BOOLEAN; + dest->flags = SF_VALUE_FLAG_NONE; + dest->boolean = 1; + } + + sfp->state = SF_STATE_DICT_BEFORE_PARAMS; + + return 0; + } + + ++sfp->pos; + + if (parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + if (*sfp->pos == '(') { + if (dest) { + dest->type = SF_TYPE_INNER_LIST; + dest->flags = SF_VALUE_FLAG_NONE; + } + + ++sfp->pos; + + sfp->state = SF_STATE_DICT_INNER_LIST_BEFORE; + + return 0; + } + + rv = parser_bare_item(sfp, dest); + if (rv != 0) { + return rv; + } + + sfp->state = SF_STATE_DICT_BEFORE_PARAMS; + + return 0; +} + +int sf_parser_dict(sf_parser *sfp, sf_vec *dest_key, sf_value *dest_value) { + int rv; + + switch (sfp->state) { + case SF_STATE_DICT_INNER_LIST_BEFORE: + rv = parser_skip_inner_list(sfp); + if (rv != 0) { + return rv; + } + + /* fall through */ + case SF_STATE_DICT_BEFORE_PARAMS: + rv = parser_skip_params(sfp); + if (rv != 0) { + return rv; + } + + /* fall through */ + case SF_STATE_DICT_AFTER: + rv = parser_next_key_or_item(sfp); + if (rv != 0) { + return rv; + } + + break; + case SF_STATE_INITIAL: + parser_discard_sp(sfp); + + if (parser_eof(sfp)) { + return SF_ERR_EOF; + } + + break; + default: + assert(0); + abort(); + } + + rv = parser_key(sfp, dest_key); + if (rv != 0) { + return rv; + } + + return parser_dict_value(sfp, dest_value); +} + +int sf_parser_list(sf_parser *sfp, sf_value *dest) { + int rv; + + switch (sfp->state) { + case SF_STATE_LIST_INNER_LIST_BEFORE: + rv = parser_skip_inner_list(sfp); + if (rv != 0) { + return rv; + } + + /* fall through */ + case SF_STATE_LIST_BEFORE_PARAMS: + rv = parser_skip_params(sfp); + if (rv != 0) { + return rv; + } + + /* fall through */ + case SF_STATE_LIST_AFTER: + rv = parser_next_key_or_item(sfp); + if (rv != 0) { + return rv; + } + + break; + case SF_STATE_INITIAL: + parser_discard_sp(sfp); + + if (parser_eof(sfp)) { + return SF_ERR_EOF; + } + + break; + default: + assert(0); + abort(); + } + + if (*sfp->pos == '(') { + if (dest) { + dest->type = SF_TYPE_INNER_LIST; + dest->flags = SF_VALUE_FLAG_NONE; + } + + ++sfp->pos; + + sfp->state = SF_STATE_LIST_INNER_LIST_BEFORE; + + return 0; + } + + rv = parser_bare_item(sfp, dest); + if (rv != 0) { + return rv; + } + + sfp->state = SF_STATE_LIST_BEFORE_PARAMS; + + return 0; +} + +int sf_parser_item(sf_parser *sfp, sf_value *dest) { + int rv; + + switch (sfp->state) { + case SF_STATE_INITIAL: + parser_discard_sp(sfp); + + if (parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + break; + case SF_STATE_ITEM_INNER_LIST_BEFORE: + rv = parser_skip_inner_list(sfp); + if (rv != 0) { + return rv; + } + + /* fall through */ + case SF_STATE_ITEM_BEFORE_PARAMS: + rv = parser_skip_params(sfp); + if (rv != 0) { + return rv; + } + + /* fall through */ + case SF_STATE_ITEM_AFTER: + parser_discard_sp(sfp); + + if (!parser_eof(sfp)) { + return SF_ERR_PARSE_ERROR; + } + + return SF_ERR_EOF; + default: + assert(0); + abort(); + } + + if (*sfp->pos == '(') { + if (dest) { + dest->type = SF_TYPE_INNER_LIST; + dest->flags = SF_VALUE_FLAG_NONE; + } + + ++sfp->pos; + + sfp->state = SF_STATE_ITEM_INNER_LIST_BEFORE; + + return 0; + } + + rv = parser_bare_item(sfp, dest); + if (rv != 0) { + return rv; + } + + sfp->state = SF_STATE_ITEM_BEFORE_PARAMS; + + return 0; +} + +void sf_parser_init(sf_parser *sfp, const uint8_t *data, size_t datalen) { + if (datalen == 0) { + sfp->pos = sfp->end = NULL; + } else { + sfp->pos = data; + sfp->end = data + datalen; + } + + sfp->state = SF_STATE_INITIAL; +} + +void sf_unescape(sf_vec *dest, const sf_vec *src) { + const uint8_t *p, *q; + uint8_t *o; + size_t len, slen; + + if (src->len == 0) { + dest->len = 0; + + return; + } + + o = dest->base; + p = src->base; + len = src->len; + + for (;;) { + q = memchr(p, '\\', len); + if (q == NULL) { + memcpy(o, p, len); + o += len; + + dest->len = (size_t)(o - dest->base); + + return; + } + + slen = (size_t)(q - p); + memcpy(o, p, slen); + o += slen; + + p = q + 1; + *o++ = *p++; + len -= slen + 2; + } +} + +void sf_base64decode(sf_vec *dest, const sf_vec *src) { + static const int index_tbl[] = { + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, + 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, + 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, + 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, + 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1}; + uint8_t *o; + const uint8_t *p, *end; + uint32_t n; + size_t i, left; + int idx; + + if (src->len == 0) { + dest->len = 0; + + return; + } + + o = dest->base; + p = src->base; + left = src->len & 0x3; + if (left == 0 && src->base[src->len - 1] == '=') { + left = 4; + } + end = src->base + src->len - left; + + for (; p != end;) { + n = 0; + + for (i = 1; i <= 4; ++i, ++p) { + idx = index_tbl[*p]; + + assert(idx != -1); + + n += (uint32_t)(idx << (24 - i * 6)); + } + + *o++ = (uint8_t)(n >> 16); + *o++ = (n >> 8) & 0xffu; + *o++ = n & 0xffu; + } + + switch (left) { + case 0: + goto fin; + case 1: + assert(0); + abort(); + case 3: + if (src->base[src->len - 1] == '=') { + left = 2; + } + + break; + case 4: + assert('=' == src->base[src->len - 1]); + + if (src->base[src->len - 2] == '=') { + left = 2; + } else { + left = 3; + } + + break; + } + + switch (left) { + case 2: + *o = (uint8_t)(index_tbl[*p++] << 2); + *o++ |= (uint8_t)(index_tbl[*p++] >> 4); + + break; + case 3: + n = (uint32_t)(index_tbl[*p++] << 10); + n += (uint32_t)(index_tbl[*p++] << 4); + n += (uint32_t)(index_tbl[*p++] >> 2); + *o++ = (n >> 8) & 0xffu; + *o++ = n & 0xffu; + + break; + } + +fin: + dest->len = (size_t)(o - dest->base); +} + +void sf_pctdecode(sf_vec *dest, const sf_vec *src) { + const uint8_t *p, *q; + uint8_t *o; + size_t len, slen; + + if (src->len == 0) { + dest->len = 0; + + return; + } + + o = dest->base; + p = src->base; + len = src->len; + + for (;;) { + q = memchr(p, '%', len); + if (q == NULL) { + memcpy(o, p, len); + o += len; + + dest->len = (size_t)(o - dest->base); + + return; + } + + slen = (size_t)(q - p); + memcpy(o, p, slen); + o += slen; + + p = q + 1; + + pctdecode(o++, &p); + + len -= slen + 3; + } +} diff --git a/contrib/libs/nghttp3/lib/sfparse/sfparse.h b/contrib/libs/nghttp3/lib/sfparse/sfparse.h new file mode 100644 index 0000000000..01cc947d4d --- /dev/null +++ b/contrib/libs/nghttp3/lib/sfparse/sfparse.h @@ -0,0 +1,428 @@ +/* + * sfparse + * + * Copyright (c) 2023 sfparse contributors + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2015 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef SFPARSE_H +#define SFPARSE_H + +/* Define WIN32 when build target is Win32 API (borrowed from + libcurl) */ +#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) +# define WIN32 +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +#if defined(_MSC_VER) && (_MSC_VER < 1800) +/* MSVC < 2013 does not have inttypes.h because it is not C99 + compliant. See compiler macros and version number in + https://sourceforge.net/p/predef/wiki/Compilers/ */ +# include <stdint.h> +#else /* !defined(_MSC_VER) || (_MSC_VER >= 1800) */ +# include <inttypes.h> +#endif /* !defined(_MSC_VER) || (_MSC_VER >= 1800) */ +#include <sys/types.h> +#include <stddef.h> + +/** + * @enum + * + * :type:`sf_type` defines value type. + */ +typedef enum sf_type { + /** + * :enum:`SF_TYPE_BOOLEAN` indicates boolean type. + */ + SF_TYPE_BOOLEAN, + /** + * :enum:`SF_TYPE_INTEGER` indicates integer type. + */ + SF_TYPE_INTEGER, + /** + * :enum:`SF_TYPE_DECIMAL` indicates decimal type. + */ + SF_TYPE_DECIMAL, + /** + * :enum:`SF_TYPE_STRING` indicates string type. + */ + SF_TYPE_STRING, + /** + * :enum:`SF_TYPE_TOKEN` indicates token type. + */ + SF_TYPE_TOKEN, + /** + * :enum:`SF_TYPE_BYTESEQ` indicates byte sequence type. + */ + SF_TYPE_BYTESEQ, + /** + * :enum:`SF_TYPE_INNER_LIST` indicates inner list type. + */ + SF_TYPE_INNER_LIST, + /** + * :enum:`SF_TYPE_DATE` indicates date type. + */ + SF_TYPE_DATE, + /** + * :enum:`SF_TYPE_DISPSTRING` indicates display string type. + */ + SF_TYPE_DISPSTRING +} sf_type; + +/** + * @macro + * + * :macro:`SF_ERR_PARSE_ERROR` indicates fatal parse error has + * occurred, and it is not possible to continue the processing. + */ +#define SF_ERR_PARSE_ERROR -1 + +/** + * @macro + * + * :macro:`SF_ERR_EOF` indicates that there is nothing left to read. + * The context of this error varies depending on the function that + * returns this error code. + */ +#define SF_ERR_EOF -2 + +/** + * @struct + * + * :type:`sf_vec` stores sequence of bytes. + */ +typedef struct sf_vec { + /** + * :member:`base` points to the beginning of the sequence of bytes. + */ + uint8_t *base; + /** + * :member:`len` is the number of bytes contained in this sequence. + */ + size_t len; +} sf_vec; + +/** + * @macro + * + * :macro:`SF_VALUE_FLAG_NONE` indicates no flag set. + */ +#define SF_VALUE_FLAG_NONE 0x0u + +/** + * @macro + * + * :macro:`SF_VALUE_FLAG_ESCAPED_STRING` indicates that a string + * contains escaped character(s). + */ +#define SF_VALUE_FLAG_ESCAPED_STRING 0x1u + +/** + * @struct + * + * :type:`sf_decimal` contains decimal value. + */ +typedef struct sf_decimal { + /** + * :member:`numer` contains numerator of the decimal value. + */ + int64_t numer; + /** + * :member:`denom` contains denominator of the decimal value. + */ + int64_t denom; +} sf_decimal; + +/** + * @struct + * + * :type:`sf_value` stores a Structured Field item. For Inner List, + * only type is set to :enum:`sf_type.SF_TYPE_INNER_LIST`. In order + * to read the items contained in an inner list, call + * `sf_parser_inner_list`. + */ +typedef struct sf_value { + /** + * :member:`type` is the type of the value contained in this + * particular object. + */ + sf_type type; + /** + * :member:`flags` is bitwise OR of one or more of + * :macro:`SF_VALUE_FLAG_* <SF_VALUE_FLAG_NONE>`. + */ + uint32_t flags; + /** + * @anonunion_start + * + * @sf_value_value + */ + union { + /** + * :member:`boolean` contains boolean value if :member:`type` == + * :enum:`sf_type.SF_TYPE_BOOLEAN`. 1 indicates true, and 0 + * indicates false. + */ + int boolean; + /** + * :member:`integer` contains integer value if :member:`type` is + * either :enum:`sf_type.SF_TYPE_INTEGER` or + * :enum:`sf_type.SF_TYPE_DATE`. + */ + int64_t integer; + /** + * :member:`decimal` contains decimal value if :member:`type` == + * :enum:`sf_type.SF_TYPE_DECIMAL`. + */ + sf_decimal decimal; + /** + * :member:`vec` contains sequence of bytes if :member:`type` is + * either :enum:`sf_type.SF_TYPE_STRING`, + * :enum:`sf_type.SF_TYPE_TOKEN`, :enum:`sf_type.SF_TYPE_BYTESEQ`, + * or :enum:`sf_type.SF_TYPE_DISPSTRING`. + * + * For :enum:`sf_type.SF_TYPE_STRING`, this field contains one or + * more escaped characters if :member:`flags` has + * :macro:`SF_VALUE_FLAG_ESCAPED_STRING` set. To unescape the + * string, use `sf_unescape`. + * + * For :enum:`sf_type.SF_TYPE_BYTESEQ`, this field contains base64 + * encoded string. To decode this byte string, use + * `sf_base64decode`. + * + * For :enum:`sf_type.SF_TYPE_DISPSTRING`, this field may contain + * percent-encoded UTF-8 byte sequences. To decode it, use + * `sf_pctdecode`. + * + * If :member:`vec.len <sf_vec.len>` == 0, :member:`vec.base + * <sf_vec.base>` is guaranteed to be NULL. + */ + sf_vec vec; + /** + * @anonunion_end + */ + }; +} sf_value; + +/** + * @struct + * + * :type:`sf_parser` is the Structured Field Values parser. Use + * `sf_parser_init` to initialize it. + */ +typedef struct sf_parser { + /* all fields are private */ + const uint8_t *pos; + const uint8_t *end; + uint32_t state; +} sf_parser; + +/** + * @function + * + * `sf_parser_init` initializes |sfp| with the given buffer pointed by + * |data| of length |datalen|. + */ +void sf_parser_init(sf_parser *sfp, const uint8_t *data, size_t datalen); + +/** + * @function + * + * `sf_parser_param` reads a parameter. If this function returns 0, + * it stores parameter key and value in |dest_key| and |dest_value| + * respectively, if they are not NULL. + * + * This function does no effort to find duplicated keys. Same key may + * be reported more than once. + * + * Caller should keep calling this function until it returns negative + * error code. If it returns :macro:`SF_ERR_EOF`, all parameters have + * read, and caller can continue to read rest of the values. If it + * returns :macro:`SF_ERR_PARSE_ERROR`, it encountered fatal error + * while parsing field value. + */ +int sf_parser_param(sf_parser *sfp, sf_vec *dest_key, sf_value *dest_value); + +/** + * @function + * + * `sf_parser_dict` reads the next dictionary key and value pair. If + * this function returns 0, it stores the key and value in |dest_key| + * and |dest_value| respectively, if they are not NULL. + * + * Caller can optionally read parameters attached to the pair by + * calling `sf_parser_param`. + * + * This function does no effort to find duplicated keys. Same key may + * be reported more than once. + * + * Caller should keep calling this function until it returns negative + * error code. If it returns :macro:`SF_ERR_EOF`, all key and value + * pairs have been read, and there is nothing left to read. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`SF_ERR_EOF` + * All values in the dictionary have read. + * :macro:`SF_ERR_PARSE_ERROR` + * It encountered fatal error while parsing field value. + */ +int sf_parser_dict(sf_parser *sfp, sf_vec *dest_key, sf_value *dest_value); + +/** + * @function + * + * `sf_parser_list` reads the next list item. If this function + * returns 0, it stores the item in |dest| if it is not NULL. + * + * Caller can optionally read parameters attached to the item by + * calling `sf_parser_param`. + * + * Caller should keep calling this function until it returns negative + * error code. If it returns :macro:`SF_ERR_EOF`, all values in the + * list have been read, and there is nothing left to read. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`SF_ERR_EOF` + * All values in the list have read. + * :macro:`SF_ERR_PARSE_ERROR` + * It encountered fatal error while parsing field value. + */ +int sf_parser_list(sf_parser *sfp, sf_value *dest); + +/** + * @function + * + * `sf_parser_item` reads a single item. If this function returns 0, + * it stores the item in |dest| if it is not NULL. + * + * This function is only used for the field value that consists of a + * single item. + * + * Caller can optionally read parameters attached to the item by + * calling `sf_parser_param`. + * + * Caller should call this function again to make sure that there is + * nothing left to read. If this 2nd function call returns + * :macro:`SF_ERR_EOF`, all data have been processed successfully. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`SF_ERR_EOF` + * There is nothing left to read. + * :macro:`SF_ERR_PARSE_ERROR` + * It encountered fatal error while parsing field value. + */ +int sf_parser_item(sf_parser *sfp, sf_value *dest); + +/** + * @function + * + * `sf_parser_inner_list` reads the next inner list item. If this + * function returns 0, it stores the item in |dest| if it is not NULL. + * + * Caller can optionally read parameters attached to the item by + * calling `sf_parser_param`. + * + * Caller should keep calling this function until it returns negative + * error code. If it returns :macro:`SF_ERR_EOF`, all values in this + * inner list have been read, and caller can optionally read + * parameters attached to this inner list by calling + * `sf_parser_param`. Then caller can continue to read rest of the + * values. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`SF_ERR_EOF` + * All values in the inner list have read. + * :macro:`SF_ERR_PARSE_ERROR` + * It encountered fatal error while parsing field value. + */ +int sf_parser_inner_list(sf_parser *sfp, sf_value *dest); + +/** + * @function + * + * `sf_unescape` copies |src| to |dest| by removing escapes (``\``). + * |src| should be the pointer to :member:`sf_value.vec` of type + * :enum:`sf_type.SF_TYPE_STRING` produced by either `sf_parser_dict`, + * `sf_parser_list`, `sf_parser_inner_list`, `sf_parser_item`, or + * `sf_parser_param`, otherwise the behavior is undefined. + * + * :member:`dest->base <sf_vec.base>` must point to the buffer that + * has sufficient space to store the unescaped string. + * + * This function sets the length of unescaped string to + * :member:`dest->len <sf_vec.len>`. + */ +void sf_unescape(sf_vec *dest, const sf_vec *src); + +/** + * @function + * + * `sf_base64decode` decodes Base64 encoded string |src| and writes + * the result into |dest|. |src| should be the pointer to + * :member:`sf_value.vec` of type :enum:`sf_type.SF_TYPE_BYTESEQ` + * produced by either `sf_parser_dict`, `sf_parser_list`, + * `sf_parser_inner_list`, `sf_parser_item`, or `sf_parser_param`, + * otherwise the behavior is undefined. + * + * :member:`dest->base <sf_vec.base>` must point to the buffer that + * has sufficient space to store the decoded byte string. + * + * This function sets the length of decoded byte string to + * :member:`dest->len <sf_vec.len>`. + */ +void sf_base64decode(sf_vec *dest, const sf_vec *src); + +/** + * @function + * + * `sf_pctdecode` decodes percent-encoded string |src| and writes the + * result into |dest|. |src| should be the pointer to + * :member:`sf_value.vec` of type :enum:`sf_type.SF_TYPE_DISPSTRING` + * produced by either `sf_parser_dict`, `sf_parser_list`, + * `sf_parser_inner_list`, `sf_parser_item`, or `sf_parser_param`, + * otherwise the behavior is undefined. + * + * :member:`dest->base <sf_vec.base>` must point to the buffer that + * has sufficient space to store the decoded byte string. + * + * This function sets the length of decoded byte string to + * :member:`dest->len <sf_vec.len>`. + */ +void sf_pctdecode(sf_vec *dest, const sf_vec *src); + +#ifdef __cplusplus +} +#endif + +#endif /* SFPARSE_H */ diff --git a/contrib/libs/nghttp3/patches/staticlib.patch b/contrib/libs/nghttp3/patches/staticlib.patch new file mode 100644 index 0000000000..aa0e6d5625 --- /dev/null +++ b/contrib/libs/nghttp3/patches/staticlib.patch @@ -0,0 +1,11 @@ +--- a/lib/includes/nghttp3/nghttp3.h ++++ b/lib/includes/nghttp3/nghttp3.h +@@ -55,7 +55,7 @@ extern "C" { + + #include <nghttp3/version.h> + +-#ifdef NGHTTP3_STATICLIB ++#if 1 + # define NGHTTP3_EXTERN + #elif defined(WIN32) + # ifdef BUILDING_NGHTTP3 diff --git a/contrib/libs/nghttp3/ya.make b/contrib/libs/nghttp3/ya.make new file mode 100644 index 0000000000..486e365e48 --- /dev/null +++ b/contrib/libs/nghttp3/ya.make @@ -0,0 +1,66 @@ +# Generated by devtools/yamaker from nixpkgs 22.11. + +LIBRARY() + +VERSION(1.6.0) + +ORIGINAL_SOURCE(https://github.com/ngtcp2/nghttp3/releases/download/v1.6.0/nghttp3-1.6.0.tar.xz) + +LICENSE( + FSFAP AND + MIT +) + +LICENSE_TEXTS(.yandex_meta/licenses.list.txt) + +PEERDIR( + contrib/libs/nghttp2 +) + +ADDINCL( + GLOBAL contrib/libs/nghttp3/lib/includes + contrib/libs/nghttp3 +) + +NO_COMPILER_WARNINGS() + +NO_RUNTIME() + +CFLAGS( + -DBUILDING_NGHTTP3 + -DHAVE_CONFIG_H + -DNGHTTP3_STATICLIB +) + +SRCS( + lib/nghttp3_balloc.c + lib/nghttp3_buf.c + lib/nghttp3_conn.c + lib/nghttp3_conv.c + lib/nghttp3_debug.c + lib/nghttp3_err.c + lib/nghttp3_frame.c + lib/nghttp3_gaptr.c + lib/nghttp3_http.c + lib/nghttp3_idtr.c + lib/nghttp3_ksl.c + lib/nghttp3_map.c + lib/nghttp3_mem.c + lib/nghttp3_objalloc.c + lib/nghttp3_opl.c + lib/nghttp3_pq.c + lib/nghttp3_qpack.c + lib/nghttp3_qpack_huffman.c + lib/nghttp3_qpack_huffman_data.c + lib/nghttp3_range.c + lib/nghttp3_rcbuf.c + lib/nghttp3_ringbuf.c + lib/nghttp3_str.c + lib/nghttp3_stream.c + lib/nghttp3_tnode.c + lib/nghttp3_unreachable.c + lib/nghttp3_vec.c + lib/nghttp3_version.c +) + +END() diff --git a/contrib/libs/ngtcp2/.yandex_meta/001_crypto_includes.patch b/contrib/libs/ngtcp2/.yandex_meta/001_crypto_includes.patch new file mode 100644 index 0000000000..c592c47aef --- /dev/null +++ b/contrib/libs/ngtcp2/.yandex_meta/001_crypto_includes.patch @@ -0,0 +1,28 @@ +diff -Naur ngtcp2-1.7.0/crypto/quictls/quictls.c ngtcp2-1.7.0_/crypto/quictls/quictls.c +--- ngtcp2-1.7.0/crypto/quictls/quictls.c 2024-08-24 08:46:22.370068166 +0300 ++++ ngtcp2-1.7.0_/crypto/quictls/quictls.c 2024-09-04 21:39:15.679675360 +0300 +@@ -37,10 +37,10 @@ + #include <openssl/rand.h> + + #if OPENSSL_VERSION_NUMBER >= 0x30000000L +-# include <openssl/core_names.h> ++# error #include <openssl/core_names.h> + #endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L */ + +-#include "shared.h" ++#include "ngtcp2_crypto_shared.h" + + #if OPENSSL_VERSION_NUMBER >= 0x30000000L + static int crypto_initialized; +diff -Naur ngtcp2-1.7.0/crypto/shared.c ngtcp2-1.7.0_/crypto/shared.c +--- ngtcp2-1.7.0/crypto/shared.c 2024-08-24 08:46:22.370068166 +0300 ++++ ngtcp2-1.7.0_/crypto/shared.c 2024-09-04 21:39:30.427538339 +0300 +@@ -22,7 +22,7 @@ + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +-#include "shared.h" ++#include "ngtcp2_crypto_shared.h" + + #ifdef WIN32 + # include <winsock2.h> diff --git a/contrib/libs/ngtcp2/.yandex_meta/__init__.py b/contrib/libs/ngtcp2/.yandex_meta/__init__.py new file mode 100644 index 0000000000..7c849ca99b --- /dev/null +++ b/contrib/libs/ngtcp2/.yandex_meta/__init__.py @@ -0,0 +1,31 @@ +from devtools.yamaker import fileutil +from devtools.yamaker.project import CMakeNinjaNixProject + + +def post_install(self): + for fname in ["quictls/quictls.c", "shared.c", "shared.h"]: + fileutil.copy([f"{self.srcdir}/crypto/{fname}"], f"{self.dstdir}/lib/") + for fname in ["quictls.c", "shared.c", "shared.h"]: + fileutil.rename(f"{self.dstdir}/lib/{fname}", f"ngtcp2_crypto_{fname}") + for fname in [ + "crypto/includes/ngtcp2/ngtcp2_crypto.h", + "crypto/includes/ngtcp2/ngtcp2_crypto_quictls.h", + "lib/ngtcp2_macro.h", + "lib/ngtcp2_net.h", + ]: + fileutil.copy([f"{self.srcdir}/{fname}"], f"{self.dstdir}/lib/includes/ngtcp2/") + with self.yamakes["."] as m: + m.PEERDIR.add("contrib/libs/openssl") + m.SRCS.add("lib/ngtcp2_crypto_quictls.c") + m.SRCS.add("lib/ngtcp2_crypto_shared.c") + + +ngtcp2 = CMakeNinjaNixProject( + license="MIT", + owners=["g:devtools-contrib", "g:yandex-io"], + nixattr="ngtcp2", + arcdir="contrib/libs/ngtcp2", + disable_includes=["openssl/core_names.h"], + platform_dispatchers=["config.h"], + post_install=post_install, +) diff --git a/contrib/libs/ngtcp2/.yandex_meta/devtools.copyrights.report b/contrib/libs/ngtcp2/.yandex_meta/devtools.copyrights.report new file mode 100644 index 0000000000..13037df63c --- /dev/null +++ b/contrib/libs/ngtcp2/.yandex_meta/devtools.copyrights.report @@ -0,0 +1,274 @@ +# File format ($ symbol means the beginning of a line): +# +# $ # this message +# $ # ======================= +# $ # comments (all commentaries should starts with some number of spaces and # symbol) +# $ IGNORE_FILES {file1.ext1} {file2.ext2} - (optional) ignore listed files when generating license macro and credits +# $ RENAME {original license id} TO {new license id} # user comments - (optional) use {new license id} instead {original license id} in ya.make files +# $ # user comments +# $ +# ${action} {license id} {license text hash} +# $BELONGS ./ya/make/file/relative/path/1/ya.make ./ya/make/2/ya.make +# ${all_file_action} filename +# $ # user commentaries (many lines) +# $ generated description - files with this license, license text... (some number of lines that starts with some number of spaces, do not modify) +# ${action} {license spdx} {license text hash} +# $BELONGS ./ya/make/file/relative/path/3/ya.make +# ${all_file_action} filename +# $ # user commentaries +# $ generated description +# $ ... +# +# You can modify action, all_file_action and add commentaries +# Available actions: +# keep - keep license in contrib and use in credits +# skip - skip license +# remove - remove all files with this license +# rename - save license text/links into licenses texts file, but not store SPDX into LINCENSE macro. You should store correct license id into devtools.license.spdx.txt file +# +# {all file action} records will be generated when license text contains filename that exists on filesystem (in contrib directory) +# We suppose that that files can contain some license info +# Available all file actions: +# FILE_IGNORE - ignore file (do nothing) +# FILE_INCLUDE - include all file data into licenses text file +# ======================= + +KEEP COPYRIGHT_SERVICE_LABEL 0badd8dd1e0fa79a05753bbdaf7b9220 +BELONGS ya.make + License text: + * Copyright (c) 2018 ngtcp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/ngtcp2_cc.c [4:4] + lib/ngtcp2_cc.h [4:4] + lib/ngtcp2_cid.c [4:4] + lib/ngtcp2_cid.h [4:4] + lib/ngtcp2_ksl.c [4:4] + lib/ngtcp2_ksl.h [4:4] + lib/ngtcp2_log.c [4:4] + lib/ngtcp2_log.h [4:4] + lib/ngtcp2_vec.c [4:4] + lib/ngtcp2_vec.h [4:4] + +KEEP COPYRIGHT_SERVICE_LABEL 277b7d2c7033dac98effbf39a0fa11c4 +BELONGS ya.make + License text: + * Copyright (c) 2023 ngtcp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/ngtcp2_conn_stat.h [4:4] + lib/ngtcp2_frame_chain.c [4:4] + lib/ngtcp2_frame_chain.h [4:4] + lib/ngtcp2_pktns_id.h [4:4] + lib/ngtcp2_transport_params.c [4:4] + lib/ngtcp2_transport_params.h [4:4] + lib/ngtcp2_tstamp.h [4:4] + +KEEP COPYRIGHT_SERVICE_LABEL 3782c9399af9718cb85783105b7784ae +BELONGS ya.make + License text: + Copyright (C) 1994-1996, 1999-2002, 2004-2017, 2020-2021 Free + Software Foundation, Inc. + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + INSTALL [4:5] + +KEEP COPYRIGHT_SERVICE_LABEL 45c763ee42f330d97a4b988bd6ff227d +BELONGS ya.make + License text: + * Copyright (c) 2022 ngtcp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/includes/ngtcp2/ngtcp2_net.h [4:4] + lib/ngtcp2_balloc.c [4:4] + lib/ngtcp2_balloc.h [4:4] + lib/ngtcp2_net.h [4:4] + lib/ngtcp2_objalloc.c [4:4] + lib/ngtcp2_objalloc.h [4:4] + lib/ngtcp2_opl.c [4:4] + lib/ngtcp2_opl.h [4:4] + lib/ngtcp2_pmtud.c [4:4] + lib/ngtcp2_pmtud.h [4:4] + lib/ngtcp2_unreachable.c [4:4] + lib/ngtcp2_unreachable.h [4:4] + +KEEP COPYRIGHT_SERVICE_LABEL 4f1d12ee611509dda7cf5d5cbd920f3a +BELONGS ya.make + License text: + * Copyright (c) 2021 ngtcp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/ngtcp2_bbr.c [4:4] + lib/ngtcp2_bbr.h [4:4] + lib/ngtcp2_window_filter.c [4:4] + lib/ngtcp2_window_filter.h [4:4] + +KEEP COPYRIGHT_SERVICE_LABEL 58664e40c9f8424ff9aaf888f8b2814d +BELONGS ya.make + License text: + Copyright (c) 2016 ngtcp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + COPYING [3:3] + README.rst [355:355] + lib/includes/ngtcp2/version.h [4:4] + +KEEP COPYRIGHT_SERVICE_LABEL 94b9ad611aac02e9c9d2f6105f7ab5f2 +BELONGS ya.make + License text: + * Copyright (c) 2024 ngtcp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/ngtcp2_settings.c [4:4] + lib/ngtcp2_settings.h [4:4] + +KEEP COPYRIGHT_SERVICE_LABEL b9bce4a8047145ca716cda7c1ba12739 +BELONGS ya.make + License text: + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2017 nghttp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/includes/ngtcp2/ngtcp2.h [4:5] + +KEEP COPYRIGHT_SERVICE_LABEL bc545ae6368aee638646db325e41a41c +BELONGS ya.make + License text: + * Copyright (c) 2017 ngtcp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/includes/ngtcp2/ngtcp2.h [4:5] + lib/includes/ngtcp2/ngtcp2_macro.h [4:4] + lib/ngtcp2_acktr.c [4:4] + lib/ngtcp2_acktr.h [4:4] + lib/ngtcp2_buf.c [4:4] + lib/ngtcp2_buf.h [4:4] + lib/ngtcp2_conn.c [4:4] + lib/ngtcp2_conn.h [4:4] + lib/ngtcp2_conv.c [4:4] + lib/ngtcp2_conv.h [4:4] + lib/ngtcp2_crypto.c [4:4] + lib/ngtcp2_crypto.h [4:4] + lib/ngtcp2_err.c [4:4] + lib/ngtcp2_err.h [4:4] + lib/ngtcp2_gaptr.c [4:4] + lib/ngtcp2_gaptr.h [4:4] + lib/ngtcp2_idtr.c [4:4] + lib/ngtcp2_idtr.h [4:4] + lib/ngtcp2_macro.h [4:4] + lib/ngtcp2_map.c [4:5] + lib/ngtcp2_map.h [4:5] + lib/ngtcp2_mem.c [4:5] + lib/ngtcp2_mem.h [4:5] + lib/ngtcp2_pkt.c [4:4] + lib/ngtcp2_pkt.h [4:4] + lib/ngtcp2_ppe.c [4:4] + lib/ngtcp2_ppe.h [4:4] + lib/ngtcp2_pq.c [4:5] + lib/ngtcp2_pq.h [4:5] + lib/ngtcp2_range.c [4:4] + lib/ngtcp2_range.h [4:4] + lib/ngtcp2_ringbuf.c [4:4] + lib/ngtcp2_ringbuf.h [4:4] + lib/ngtcp2_rob.c [4:4] + lib/ngtcp2_rob.h [4:4] + lib/ngtcp2_rtb.c [4:4] + lib/ngtcp2_rtb.h [4:4] + lib/ngtcp2_str.c [4:4] + lib/ngtcp2_str.h [4:4] + lib/ngtcp2_strm.c [4:4] + lib/ngtcp2_strm.h [4:4] + +KEEP COPYRIGHT_SERVICE_LABEL c812bfe524d8bc74ad8cf40a45902020 +BELONGS ya.make + License text: + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/ngtcp2_map.c [4:5] + lib/ngtcp2_map.h [4:5] + lib/ngtcp2_pq.c [4:5] + lib/ngtcp2_pq.h [4:5] + +KEEP COPYRIGHT_SERVICE_LABEL d8ca50c11a8cd311a31e6462c4b42555 +BELONGS ya.make + License text: + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2014 nghttp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/ngtcp2_mem.c [4:5] + lib/ngtcp2_mem.h [4:5] + +KEEP COPYRIGHT_SERVICE_LABEL ed9787b1511b75f8534d2b25efbe271c +BELONGS ya.make + License text: + * // Copyright (c) 2016 The Chromium Authors. All rights reserved. + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/ngtcp2_window_filter.c [31:31] + lib/ngtcp2_window_filter.h [31:31] + +KEEP COPYRIGHT_SERVICE_LABEL f467e93f3d8b0ebd3dc4ff1696f09048 +BELONGS ya.make + License text: + * Copyright (c) 2019 ngtcp2 contributors + Scancode info: + Original SPDX id: COPYRIGHT_SERVICE_LABEL + Score : 100.00 + Match type : COPYRIGHT + Files with this license: + lib/includes/ngtcp2/ngtcp2_crypto.h [4:4] + lib/includes/ngtcp2/ngtcp2_crypto_quictls.h [4:4] + lib/ngtcp2_addr.c [4:4] + lib/ngtcp2_addr.h [4:4] + lib/ngtcp2_crypto_quictls.c [4:4] + lib/ngtcp2_crypto_shared.c [4:4] + lib/ngtcp2_crypto_shared.h [4:4] + lib/ngtcp2_path.c [4:4] + lib/ngtcp2_path.h [4:4] + lib/ngtcp2_pv.c [4:4] + lib/ngtcp2_pv.h [4:4] + lib/ngtcp2_qlog.c [4:4] + lib/ngtcp2_qlog.h [4:4] + lib/ngtcp2_rcvry.h [4:4] + lib/ngtcp2_rst.c [4:4] + lib/ngtcp2_rst.h [4:4] + lib/ngtcp2_version.c [4:4] diff --git a/contrib/libs/ngtcp2/.yandex_meta/devtools.licenses.report b/contrib/libs/ngtcp2/.yandex_meta/devtools.licenses.report new file mode 100644 index 0000000000..12434f6ac9 --- /dev/null +++ b/contrib/libs/ngtcp2/.yandex_meta/devtools.licenses.report @@ -0,0 +1,202 @@ +# File format ($ symbol means the beginning of a line): +# +# $ # this message +# $ # ======================= +# $ # comments (all commentaries should starts with some number of spaces and # symbol) +# $ IGNORE_FILES {file1.ext1} {file2.ext2} - (optional) ignore listed files when generating license macro and credits +# $ RENAME {original license id} TO {new license id} # user comments - (optional) use {new license id} instead {original license id} in ya.make files +# $ # user comments +# $ +# ${action} {license id} {license text hash} +# $BELONGS ./ya/make/file/relative/path/1/ya.make ./ya/make/2/ya.make +# ${all_file_action} filename +# $ # user commentaries (many lines) +# $ generated description - files with this license, license text... (some number of lines that starts with some number of spaces, do not modify) +# ${action} {license spdx} {license text hash} +# $BELONGS ./ya/make/file/relative/path/3/ya.make +# ${all_file_action} filename +# $ # user commentaries +# $ generated description +# $ ... +# +# You can modify action, all_file_action and add commentaries +# Available actions: +# keep - keep license in contrib and use in credits +# skip - skip license +# remove - remove all files with this license +# rename - save license text/links into licenses texts file, but not store SPDX into LINCENSE macro. You should store correct license id into devtools.license.spdx.txt file +# +# {all file action} records will be generated when license text contains filename that exists on filesystem (in contrib directory) +# We suppose that that files can contain some license info +# Available all file actions: +# FILE_IGNORE - ignore file (do nothing) +# FILE_INCLUDE - include all file data into licenses text file +# ======================= + +KEEP MIT 14395d49cccf7dd9c262788c7c3eb609 +BELONGS ya.make +FILE_INCLUDE AUTHORS found in files: COPYING at line 19 + Note: matched license text is too long. Read it in the source files. + Scancode info: + Original SPDX id: MIT + Score : 100.00 + Match type : TEXT + Links : http://opensource.org/licenses/mit-license.php, https://spdx.org/licenses/MIT + Files with this license: + COPYING [5:22] + +KEEP BSD-3-Clause 720be7eb831bfde6b4599190542bfa9a +BELONGS ya.make + License text: + * // Use of this source code is governed by a BSD-style license that can be + * // found in the LICENSE file. + Scancode info: + Original SPDX id: BSD-3-Clause + Score : 90.00 + Match type : NOTICE + Links : http://www.opensource.org/licenses/BSD-3-Clause, https://spdx.org/licenses/BSD-3-Clause + Files with this license: + lib/ngtcp2_window_filter.c [32:33] + lib/ngtcp2_window_filter.h [32:33] + +KEEP MIT 8c6b397cbef46628bea401075e15b1d5 +BELONGS ya.make + License text: + The MIT License + Scancode info: + Original SPDX id: MIT + Score : 100.00 + Match type : REFERENCE + Links : http://opensource.org/licenses/mit-license.php, https://spdx.org/licenses/MIT + Files with this license: + COPYING [1:1] + +KEEP MIT a00cb0c2918046e6e350bbe37dc87fff +BELONGS ya.make + License text: + License + ------- + The MIT License + Scancode info: + Original SPDX id: MIT + Score : 100.00 + Match type : NOTICE + Links : http://opensource.org/licenses/mit-license.php, https://spdx.org/licenses/MIT + Files with this license: + README.rst [350:353] + +KEEP MIT a3a8f7feced3937b87cd090ba748e24b +BELONGS ya.make +FILE_INCLUDE AUTHORS found in files: lib/includes/ngtcp2/ngtcp2.h at line 21, lib/includes/ngtcp2/ngtcp2_crypto.h at line 20, lib/includes/ngtcp2/ngtcp2_crypto_quictls.h at line 20, lib/includes/ngtcp2/ngtcp2_macro.h at line 20, lib/includes/ngtcp2/ngtcp2_net.h at line 20, lib/includes/ngtcp2/version.h at line 20, lib/ngtcp2_acktr.c at line 20, lib/ngtcp2_acktr.h at line 20, lib/ngtcp2_addr.c at line 20, lib/ngtcp2_addr.h at line 20, lib/ngtcp2_balloc.c at line 20, lib/ngtcp2_balloc.h at line 20, lib/ngtcp2_bbr.c at line 20, lib/ngtcp2_bbr.h at line 20, lib/ngtcp2_buf.c at line 20, lib/ngtcp2_buf.h at line 20, lib/ngtcp2_cc.c at line 20, lib/ngtcp2_cc.h at line 20, lib/ngtcp2_cid.c at line 20, lib/ngtcp2_cid.h at line 20, lib/ngtcp2_conn.c at line 20, lib/ngtcp2_conn.h at line 20, lib/ngtcp2_conn_stat.h at line 20, lib/ngtcp2_conv.c at line 20, lib/ngtcp2_conv.h at line 20, lib/ngtcp2_crypto.c at line 20, lib/ngtcp2_crypto.h at line 20, lib/ngtcp2_crypto_quictls.c at line 20, lib/ngtcp2_crypto_shared.c at line 20, lib/ngtcp2_crypto_shared.h at line 20, lib/ngtcp2_err.c at line 20, lib/ngtcp2_err.h at line 20, lib/ngtcp2_frame_chain.c at line 20, lib/ngtcp2_frame_chain.h at line 20, lib/ngtcp2_gaptr.c at line 20, lib/ngtcp2_gaptr.h at line 20, lib/ngtcp2_idtr.c at line 20, lib/ngtcp2_idtr.h at line 20, lib/ngtcp2_ksl.c at line 20, lib/ngtcp2_ksl.h at line 20, lib/ngtcp2_log.c at line 20, lib/ngtcp2_log.h at line 20, lib/ngtcp2_macro.h at line 20, lib/ngtcp2_map.c at line 21, lib/ngtcp2_map.h at line 21, lib/ngtcp2_mem.c at line 21, lib/ngtcp2_mem.h at line 21, lib/ngtcp2_net.h at line 20, lib/ngtcp2_objalloc.c at line 20, lib/ngtcp2_objalloc.h at line 20, lib/ngtcp2_opl.c at line 20, lib/ngtcp2_opl.h at line 20, lib/ngtcp2_path.c at line 20, lib/ngtcp2_path.h at line 20, lib/ngtcp2_pkt.c at line 20, lib/ngtcp2_pkt.h at line 20, lib/ngtcp2_pktns_id.h at line 20, lib/ngtcp2_pmtud.c at line 20, lib/ngtcp2_pmtud.h at line 20, lib/ngtcp2_ppe.c at line 20, lib/ngtcp2_ppe.h at line 20, lib/ngtcp2_pq.c at line 21, lib/ngtcp2_pq.h at line 21, lib/ngtcp2_pv.c at line 20, lib/ngtcp2_pv.h at line 20, lib/ngtcp2_qlog.c at line 20, lib/ngtcp2_qlog.h at line 20, lib/ngtcp2_range.c at line 20, lib/ngtcp2_range.h at line 20, lib/ngtcp2_rcvry.h at line 20, lib/ngtcp2_ringbuf.c at line 20, lib/ngtcp2_ringbuf.h at line 20, lib/ngtcp2_rob.c at line 20, lib/ngtcp2_rob.h at line 20, lib/ngtcp2_rst.c at line 20, lib/ngtcp2_rst.h at line 20, lib/ngtcp2_rtb.c at line 20, lib/ngtcp2_rtb.h at line 20, lib/ngtcp2_settings.c at line 20, lib/ngtcp2_settings.h at line 20, lib/ngtcp2_str.c at line 20, lib/ngtcp2_str.h at line 20, lib/ngtcp2_strm.c at line 20, lib/ngtcp2_strm.h at line 20, lib/ngtcp2_transport_params.c at line 20, lib/ngtcp2_transport_params.h at line 20, lib/ngtcp2_tstamp.h at line 20, lib/ngtcp2_unreachable.c at line 20, lib/ngtcp2_unreachable.h at line 20, lib/ngtcp2_vec.c at line 20, lib/ngtcp2_vec.h at line 20, lib/ngtcp2_version.c at line 20, lib/ngtcp2_window_filter.c at line 20, lib/ngtcp2_window_filter.h at line 20 + Note: matched license text is too long. Read it in the source files. + Scancode info: + Original SPDX id: MIT + Score : 100.00 + Match type : TEXT + Links : http://opensource.org/licenses/mit-license.php, https://spdx.org/licenses/MIT + Files with this license: + lib/includes/ngtcp2/ngtcp2.h [7:24] + lib/includes/ngtcp2/ngtcp2_crypto.h [6:23] + lib/includes/ngtcp2/ngtcp2_crypto_quictls.h [6:23] + lib/includes/ngtcp2/ngtcp2_macro.h [6:23] + lib/includes/ngtcp2/ngtcp2_net.h [6:23] + lib/includes/ngtcp2/version.h [6:23] + lib/ngtcp2_acktr.c [6:23] + lib/ngtcp2_acktr.h [6:23] + lib/ngtcp2_addr.c [6:23] + lib/ngtcp2_addr.h [6:23] + lib/ngtcp2_balloc.c [6:23] + lib/ngtcp2_balloc.h [6:23] + lib/ngtcp2_bbr.c [6:23] + lib/ngtcp2_bbr.h [6:23] + lib/ngtcp2_buf.c [6:23] + lib/ngtcp2_buf.h [6:23] + lib/ngtcp2_cc.c [6:23] + lib/ngtcp2_cc.h [6:23] + lib/ngtcp2_cid.c [6:23] + lib/ngtcp2_cid.h [6:23] + lib/ngtcp2_conn.c [6:23] + lib/ngtcp2_conn.h [6:23] + lib/ngtcp2_conn_stat.h [6:23] + lib/ngtcp2_conv.c [6:23] + lib/ngtcp2_conv.h [6:23] + lib/ngtcp2_crypto.c [6:23] + lib/ngtcp2_crypto.h [6:23] + lib/ngtcp2_crypto_quictls.c [6:23] + lib/ngtcp2_crypto_shared.c [6:23] + lib/ngtcp2_crypto_shared.h [6:23] + lib/ngtcp2_err.c [6:23] + lib/ngtcp2_err.h [6:23] + lib/ngtcp2_frame_chain.c [6:23] + lib/ngtcp2_frame_chain.h [6:23] + lib/ngtcp2_gaptr.c [6:23] + lib/ngtcp2_gaptr.h [6:23] + lib/ngtcp2_idtr.c [6:23] + lib/ngtcp2_idtr.h [6:23] + lib/ngtcp2_ksl.c [6:23] + lib/ngtcp2_ksl.h [6:23] + lib/ngtcp2_log.c [6:23] + lib/ngtcp2_log.h [6:23] + lib/ngtcp2_macro.h [6:23] + lib/ngtcp2_map.c [7:24] + lib/ngtcp2_map.h [7:24] + lib/ngtcp2_mem.c [7:24] + lib/ngtcp2_mem.h [7:24] + lib/ngtcp2_net.h [6:23] + lib/ngtcp2_objalloc.c [6:23] + lib/ngtcp2_objalloc.h [6:23] + lib/ngtcp2_opl.c [6:23] + lib/ngtcp2_opl.h [6:23] + lib/ngtcp2_path.c [6:23] + lib/ngtcp2_path.h [6:23] + lib/ngtcp2_pkt.c [6:23] + lib/ngtcp2_pkt.h [6:23] + lib/ngtcp2_pktns_id.h [6:23] + lib/ngtcp2_pmtud.c [6:23] + lib/ngtcp2_pmtud.h [6:23] + lib/ngtcp2_ppe.c [6:23] + lib/ngtcp2_ppe.h [6:23] + lib/ngtcp2_pq.c [7:24] + lib/ngtcp2_pq.h [7:24] + lib/ngtcp2_pv.c [6:23] + lib/ngtcp2_pv.h [6:23] + lib/ngtcp2_qlog.c [6:23] + lib/ngtcp2_qlog.h [6:23] + lib/ngtcp2_range.c [6:23] + lib/ngtcp2_range.h [6:23] + lib/ngtcp2_rcvry.h [6:23] + lib/ngtcp2_ringbuf.c [6:23] + lib/ngtcp2_ringbuf.h [6:23] + lib/ngtcp2_rob.c [6:23] + lib/ngtcp2_rob.h [6:23] + lib/ngtcp2_rst.c [6:23] + lib/ngtcp2_rst.h [6:23] + lib/ngtcp2_rtb.c [6:23] + lib/ngtcp2_rtb.h [6:23] + lib/ngtcp2_settings.c [6:23] + lib/ngtcp2_settings.h [6:23] + lib/ngtcp2_str.c [6:23] + lib/ngtcp2_str.h [6:23] + lib/ngtcp2_strm.c [6:23] + lib/ngtcp2_strm.h [6:23] + lib/ngtcp2_transport_params.c [6:23] + lib/ngtcp2_transport_params.h [6:23] + lib/ngtcp2_tstamp.h [6:23] + lib/ngtcp2_unreachable.c [6:23] + lib/ngtcp2_unreachable.h [6:23] + lib/ngtcp2_vec.c [6:23] + lib/ngtcp2_vec.h [6:23] + lib/ngtcp2_version.c [6:23] + lib/ngtcp2_window_filter.c [6:23] + lib/ngtcp2_window_filter.h [6:23] + +KEEP FSFAP d02cc4799cbd521d2aa8c3ff19e655f6 +BELONGS ya.make + Note: matched license text is too long. Read it in the source files. + Scancode info: + Original SPDX id: FSFAP + Score : 100.00 + Match type : TEXT + Links : http://www.gnu.org/prep/maintain/html_node/License-Notices-for-Other-Files.html, https://spdx.org/licenses/FSFAP + Files with this license: + INSTALL [7:10] diff --git a/contrib/libs/ngtcp2/.yandex_meta/licenses.list.txt b/contrib/libs/ngtcp2/.yandex_meta/licenses.list.txt new file mode 100644 index 0000000000..ec8c3e3f37 --- /dev/null +++ b/contrib/libs/ngtcp2/.yandex_meta/licenses.list.txt @@ -0,0 +1,184 @@ +====================BSD-3-Clause==================== + * // Use of this source code is governed by a BSD-style license that can be + * // found in the LICENSE file. + + +====================COPYRIGHT==================== + Copyright (C) 1994-1996, 1999-2002, 2004-2017, 2020-2021 Free +Software Foundation, Inc. + + +====================COPYRIGHT==================== + * // Copyright (c) 2016 The Chromium Authors. All rights reserved. + + +====================COPYRIGHT==================== + * Copyright (c) 2017 ngtcp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2014 nghttp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2017 nghttp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2018 ngtcp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2019 ngtcp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2021 ngtcp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2022 ngtcp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2023 ngtcp2 contributors + + +====================COPYRIGHT==================== + * Copyright (c) 2024 ngtcp2 contributors + + +====================COPYRIGHT==================== +Copyright (c) 2016 ngtcp2 contributors + + +====================FSFAP==================== + Copying and distribution of this file, with or without modification, +are permitted in any medium without royalty provided the copyright +notice and this notice are preserved. This file is offered as-is, +without warranty of any kind. + + +====================File: AUTHORS==================== +Alexis La Goutte +Amir Livneh +Anna Henningsen +Atle Solbakken +Bas van den Berg +Billy Robert O'Neal III +Bruno S Marques +Bryan Call +Cheng Zhao +Daan De Meyer +Daiki Ueno +Daniel Bevenius +Daniel Stenberg +Dave Reisner +Don +Don Olmstead +Frédéric Lécaille +Félix Dagenais +Irina Guberman +James M Snell +Jason Rhinelander +Javier Blazquez +Jay Satiro +Jean-Philippe Boivin +Jiawen Geng +Junqi Wang +Karthikdasari0423 +Kazu Yamamoto +Ken-ichi ICHINO +Kenjiro Nakayama +Lars Eggert +Liang Ma +Marin Rukavina +Mark Chiou +Martin Thomson +Michael White +Moritz Buhl +NKTelnet +Natris +Nishant Nori +Patrick Griffis +Peter Wu +Samuel Henrique +Stefan Eissing +Tal Regev +Tatsuhiro Tsujikawa +Tim Gates +Tomas Mraz +Toni Uhlig +Valère Plantevin +Victor Loh +Viktor Szakats +Your Name +Zizhong Zhang +flx413 +hondaxiao +hyunjic +junqiw +msoxzw +nickfajones +rhoxn +scw00 +shibin k v + + +====================MIT==================== + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + +====================MIT==================== +License +------- + +The MIT License + + +====================MIT==================== +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +====================MIT==================== +The MIT License diff --git a/contrib/libs/ngtcp2/.yandex_meta/override.nix b/contrib/libs/ngtcp2/.yandex_meta/override.nix new file mode 100644 index 0000000000..3f250b774b --- /dev/null +++ b/contrib/libs/ngtcp2/.yandex_meta/override.nix @@ -0,0 +1,20 @@ +pkgs: attrs: with pkgs; rec { + name = "ngtcp2"; + version = "1.8.1"; + + nativeBuildInputs = [ + autoreconfHook cmake pkg-config autoconf libtool automake openssl + ]; + + # without this nix tries to fetch and build quictls + buildInputs = [ ]; + + src = fetchurl { + url = "https://github.com/ngtcp2/ngtcp2/releases/download/v${version}/ngtcp2-${version}.tar.xz"; + hash = "sha256-rIRKees/FT5Mzc/szt9CxXqzUruKuS7IrF00F6ec+xE="; + }; + + patches = [ + ./001_crypto_includes.patch + ]; +} diff --git a/contrib/libs/ngtcp2/AUTHORS b/contrib/libs/ngtcp2/AUTHORS new file mode 100644 index 0000000000..7019dbc8e6 --- /dev/null +++ b/contrib/libs/ngtcp2/AUTHORS @@ -0,0 +1,63 @@ +Alexis La Goutte +Amir Livneh +Anna Henningsen +Atle Solbakken +Bas van den Berg +Billy Robert O'Neal III +Bruno S Marques +Bryan Call +Cheng Zhao +Daan De Meyer +Daiki Ueno +Daniel Bevenius +Daniel Stenberg +Dave Reisner +Don +Don Olmstead +Frédéric Lécaille +Félix Dagenais +Irina Guberman +James M Snell +Jason Rhinelander +Javier Blazquez +Jay Satiro +Jean-Philippe Boivin +Jiawen Geng +Junqi Wang +Karthikdasari0423 +Kazu Yamamoto +Ken-ichi ICHINO +Kenjiro Nakayama +Lars Eggert +Liang Ma +Marin Rukavina +Mark Chiou +Martin Thomson +Michael White +Moritz Buhl +NKTelnet +Natris +Nishant Nori +Patrick Griffis +Peter Wu +Samuel Henrique +Stefan Eissing +Tal Regev +Tatsuhiro Tsujikawa +Tim Gates +Tomas Mraz +Toni Uhlig +Valère Plantevin +Victor Loh +Viktor Szakats +Your Name +Zizhong Zhang +flx413 +hondaxiao +hyunjic +junqiw +msoxzw +nickfajones +rhoxn +scw00 +shibin k v diff --git a/contrib/libs/ngtcp2/COPYING b/contrib/libs/ngtcp2/COPYING new file mode 100644 index 0000000000..9b367cdce7 --- /dev/null +++ b/contrib/libs/ngtcp2/COPYING @@ -0,0 +1,22 @@ +The MIT License + +Copyright (c) 2016 ngtcp2 contributors + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/contrib/libs/ngtcp2/ChangeLog b/contrib/libs/ngtcp2/ChangeLog new file mode 100644 index 0000000000..90501bdbef --- /dev/null +++ b/contrib/libs/ngtcp2/ChangeLog @@ -0,0 +1,42 @@ +commit 9accf8d7803f874eaf418ec8988a67aa34ed193e +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-10-17 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-10-17 + + Bump package and library versions + +commit 84833ccc39ce7901c7f41d3d05e2d09c3a66e71a +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-10-12 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-10-17 + + Add test for ACK padding + +commit 29209046dc3cbba4ccad36062dfa54ac34b8ffc3 +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-10-11 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-10-17 + + Fix minimum packet size computation + + The Connection ID used in minimum packet size computation should be + Connection ID length that a local endpoint is generated and sends to a + remote endpoint. + + Merge ngtcp2_ppe_padding_hp_sample to ngtcp2_ppe_padding_size to + ensure that minimum packet size is always honored. + +commit 2683ec782e9bdb7a1d6800d611a7a8f87dff8219 +Author: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +AuthorDate: 2024-10-11 +Commit: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com> +CommitDate: 2024-10-17 + + Do not count PADDING to CWND if it is added to make minimum sized packet + + Otherwise, we ended up cwnd-limited situation, and if ACKs from remote + is lost frequently, local endpoint is unable to send any ack eliciting + packet. diff --git a/contrib/libs/ngtcp2/INSTALL b/contrib/libs/ngtcp2/INSTALL new file mode 100644 index 0000000000..e82fd21de2 --- /dev/null +++ b/contrib/libs/ngtcp2/INSTALL @@ -0,0 +1,368 @@ +Installation Instructions +************************* + + Copyright (C) 1994-1996, 1999-2002, 2004-2017, 2020-2021 Free +Software Foundation, Inc. + + Copying and distribution of this file, with or without modification, +are permitted in any medium without royalty provided the copyright +notice and this notice are preserved. This file is offered as-is, +without warranty of any kind. + +Basic Installation +================== + + Briefly, the shell command './configure && make && make install' +should configure, build, and install this package. The following +more-detailed instructions are generic; see the 'README' file for +instructions specific to this package. Some packages provide this +'INSTALL' file but do not implement all of the features documented +below. The lack of an optional feature in a given package is not +necessarily a bug. More recommendations for GNU packages can be found +in *note Makefile Conventions: (standards)Makefile Conventions. + + The 'configure' shell script attempts to guess correct values for +various system-dependent variables used during compilation. It uses +those values to create a 'Makefile' in each directory of the package. +It may also create one or more '.h' files containing system-dependent +definitions. Finally, it creates a shell script 'config.status' that +you can run in the future to recreate the current configuration, and a +file 'config.log' containing compiler output (useful mainly for +debugging 'configure'). + + It can also use an optional file (typically called 'config.cache' and +enabled with '--cache-file=config.cache' or simply '-C') that saves the +results of its tests to speed up reconfiguring. Caching is disabled by +default to prevent problems with accidental use of stale cache files. + + If you need to do unusual things to compile the package, please try +to figure out how 'configure' could check whether to do them, and mail +diffs or instructions to the address given in the 'README' so they can +be considered for the next release. If you are using the cache, and at +some point 'config.cache' contains results you don't want to keep, you +may remove or edit it. + + The file 'configure.ac' (or 'configure.in') is used to create +'configure' by a program called 'autoconf'. You need 'configure.ac' if +you want to change it or regenerate 'configure' using a newer version of +'autoconf'. + + The simplest way to compile this package is: + + 1. 'cd' to the directory containing the package's source code and type + './configure' to configure the package for your system. + + Running 'configure' might take a while. While running, it prints + some messages telling which features it is checking for. + + 2. Type 'make' to compile the package. + + 3. Optionally, type 'make check' to run any self-tests that come with + the package, generally using the just-built uninstalled binaries. + + 4. Type 'make install' to install the programs and any data files and + documentation. When installing into a prefix owned by root, it is + recommended that the package be configured and built as a regular + user, and only the 'make install' phase executed with root + privileges. + + 5. Optionally, type 'make installcheck' to repeat any self-tests, but + this time using the binaries in their final installed location. + This target does not install anything. Running this target as a + regular user, particularly if the prior 'make install' required + root privileges, verifies that the installation completed + correctly. + + 6. You can remove the program binaries and object files from the + source code directory by typing 'make clean'. To also remove the + files that 'configure' created (so you can compile the package for + a different kind of computer), type 'make distclean'. There is + also a 'make maintainer-clean' target, but that is intended mainly + for the package's developers. 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Until the limitation is lifted, you can use this +workaround: + + CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash + +'configure' Invocation +====================== + + 'configure' recognizes the following options to control how it +operates. + +'--help' +'-h' + Print a summary of all of the options to 'configure', and exit. + +'--help=short' +'--help=recursive' + Print a summary of the options unique to this package's + 'configure', and exit. The 'short' variant lists options used only + in the top level, while the 'recursive' variant lists options also + present in any nested packages. + +'--version' +'-V' + Print the version of Autoconf used to generate the 'configure' + script, and exit. + +'--cache-file=FILE' + Enable the cache: use and save the results of the tests in FILE, + traditionally 'config.cache'. FILE defaults to '/dev/null' to + disable caching. + +'--config-cache' +'-C' + Alias for '--cache-file=config.cache'. + +'--quiet' +'--silent' +'-q' + Do not print messages saying which checks are being made. To + suppress all normal output, redirect it to '/dev/null' (any error + messages will still be shown). + +'--srcdir=DIR' + Look for the package's source code in directory DIR. Usually + 'configure' can determine that directory automatically. + +'--prefix=DIR' + Use DIR as the installation prefix. *note Installation Names:: for + more details, including other options available for fine-tuning the + installation locations. + +'--no-create' +'-n' + Run the configure checks, but stop before creating any output + files. + +'configure' also accepts some other, not widely useful, options. Run +'configure --help' for more details. diff --git a/contrib/libs/ngtcp2/README b/contrib/libs/ngtcp2/README new file mode 100644 index 0000000000..5ccc0ea36b --- /dev/null +++ b/contrib/libs/ngtcp2/README @@ -0,0 +1 @@ +See README.rst diff --git a/contrib/libs/ngtcp2/README.rst b/contrib/libs/ngtcp2/README.rst new file mode 100644 index 0000000000..5d6990ff25 --- /dev/null +++ b/contrib/libs/ngtcp2/README.rst @@ -0,0 +1,355 @@ +ngtcp2 +====== + +"Call it TCP/2. One More Time." + +ngtcp2 project is an effort to implement `RFC9000 +<https://datatracker.ietf.org/doc/html/rfc9000>`_ QUIC protocol. + +Documentation +------------- + +`Online documentation <https://nghttp2.org/ngtcp2/>`_ is available. + +Public test server +------------------ + +The following endpoints are available to try out ngtcp2 +implementation: + +- https://nghttp2.org:4433 +- https://nghttp2.org:4434 (requires address validation token) +- https://nghttp2.org (powered by `nghttpx + <https://nghttp2.org/documentation/nghttpx.1.html>`_) + + This endpoints sends Alt-Svc header field to clients if it is + accessed via HTTP/1.1 or HTTP/2 to tell them that HTTP/3 is + available at UDP 443. + +Requirements +------------ + +The libngtcp2 C library itself does not depend on any external +libraries. The example client, and server are written in C++20, and +should compile with the modern C++ compilers (e.g., clang >= 11.0, or +gcc >= 11.0). + +The following packages are required to configure the build system: + +- pkg-config >= 0.20 +- autoconf +- automake +- autotools-dev +- libtool + +To build sources under the examples directory, libev and nghttp3 are +required: + +- libev +- `nghttp3 <https://github.com/ngtcp2/nghttp3>`_ for HTTP/3 + +To enable `TLS Certificate Compression +<https://datatracker.ietf.org/doc/html/rfc8879>`_ in bsslclient and +bsslserver (BoringSSL (aws-lc) examples client and server), the +following library is required: + +- libbrotli-dev >= 1.0.9 + +ngtcp2 crypto helper library, and client and server under examples +directory require at least one of the following TLS backends: + +- `quictls + <https://github.com/quictls/openssl/tree/OpenSSL_1_1_1w+quic>`_ +- GnuTLS >= 3.7.5 +- BoringSSL (commit 76968bb3d53982560bcf08bcd0ba3e1865fe15cd); + or aws-lc >= 1.19.0 +- Picotls (commit 89fe56f4d79200a5801a08ed3b6ac8322e01ccd5) +- wolfSSL >= 5.5.0 +- LibreSSL >= v3.9.2 + +Before building from git +------------------------ + +When build from git, run the following command to pull submodules: + +.. code-block:: shell + + $ git submodule update --init + +Build with wolfSSL +------------------ + +.. code-block:: shell + + $ git clone --depth 1 -b v5.7.2-stable https://github.com/wolfSSL/wolfssl + $ cd wolfssl + $ autoreconf -i + $ # For wolfSSL < v5.6.6, append --enable-quic. + $ ./configure --prefix=$PWD/build \ + --enable-all --enable-aesni --enable-harden --enable-keylog-export \ + --disable-ech + $ make -j$(nproc) + $ make install + $ cd .. + $ git clone --recursive https://github.com/ngtcp2/nghttp3 + $ cd nghttp3 + $ autoreconf -i + $ ./configure --prefix=$PWD/build --enable-lib-only + $ make -j$(nproc) check + $ make install + $ cd .. + $ git clone --recursive https://github.com/ngtcp2/ngtcp2 + $ cd ngtcp2 + $ autoreconf -i + $ # For Mac users who have installed libev with MacPorts, append + $ # LIBEV_CFLAGS="-I/opt/local/include" LIBEV_LIBS="-L/opt/local/lib -lev" + $ ./configure PKG_CONFIG_PATH=$PWD/../wolfssl/build/lib/pkgconfig:$PWD/../nghttp3/build/lib/pkgconfig \ + --with-wolfssl + $ make -j$(nproc) check + +Build with BoringSSL +-------------------- + +.. code-block:: shell + + $ git clone https://boringssl.googlesource.com/boringssl + $ cd boringssl + $ git checkout 76968bb3d53982560bcf08bcd0ba3e1865fe15cd + $ cmake -B build -DCMAKE_POSITION_INDEPENDENT_CODE=ON + $ make -j$(nproc) -C build + $ cd .. + $ git clone --recursive https://github.com/ngtcp2/nghttp3 + $ cd nghttp3 + $ autoreconf -i + $ ./configure --prefix=$PWD/build --enable-lib-only + $ make -j$(nproc) check + $ make install + $ cd .. + $ git clone --recursive https://github.com/ngtcp2/ngtcp2 + $ cd ngtcp2 + $ autoreconf -i + $ # For Mac users who have installed libev with MacPorts, append + $ # LIBEV_CFLAGS="-I/opt/local/include" LIBEV_LIBS="-L/opt/local/lib -lev" + $ ./configure PKG_CONFIG_PATH=$PWD/../nghttp3/build/lib/pkgconfig \ + BORINGSSL_LIBS="-L$PWD/../boringssl/build/ssl -lssl -L$PWD/../boringssl/build/crypto -lcrypto" \ + BORINGSSL_CFLAGS="-I$PWD/../boringssl/include" \ + --with-boringssl + $ make -j$(nproc) check + +Build with aws-lc +----------------- + +.. code-block:: shell + + $ git clone --depth 1 -b v1.36.1 https://github.com/aws/aws-lc + $ cd aws-lc + $ cmake -B build -DDISABLE_GO=ON + $ make -j$(nproc) -C build + $ cd .. + $ git clone --recursive https://github.com/ngtcp2/nghttp3 + $ cd nghttp3 + $ autoreconf -i + $ ./configure --prefix=$PWD/build --enable-lib-only + $ make -j$(nproc) check + $ make install + $ cd .. + $ git clone --recursive https://github.com/ngtcp2/ngtcp2 + $ cd ngtcp2 + $ autoreconf -i + $ # For Mac users who have installed libev with MacPorts, append + $ # LIBEV_CFLAGS="-I/opt/local/include" LIBEV_LIBS="-L/opt/local/lib -lev" + $ ./configure PKG_CONFIG_PATH=$PWD/../nghttp3/build/lib/pkgconfig \ + BORINGSSL_CFLAGS="-I$PWD/../aws-lc/include" \ + BORINGSSL_LIBS="-L$PWD/../aws-lc/build/ssl -lssl -L$PWD/../aws-lc/build/crypto -lcrypto" \ + --with-boringssl + $ make -j$(nproc) check + +Build with libressl +----------------- + +.. code-block:: shell + + $ git clone --depth 1 -b v3.9.2 https://github.com/libressl/portable.git libressl + $ cd libressl + $ ./autogen.sh + $ ./configure --prefix=$PWD/build + $ make -j$(nproc) install + $ cd .. + $ git clone --recursive https://github.com/ngtcp2/nghttp3 + $ cd nghttp3 + $ autoreconf -i + $ ./configure --prefix=$PWD/build --enable-lib-only + $ make -j$(nproc) check + $ make install + $ cd .. + $ git clone --recursive https://github.com/ngtcp2/ngtcp2 + $ cd ngtcp2 + $ autoreconf -i + $ # For Mac users who have installed libev with MacPorts, append + $ # LIBEV_CFLAGS="-I/opt/homebrew/Cellar/libev/4.33/include" LIBEV_LIBS="-L/opt/homebrew/Cellar/libev/4.33/lib -lev" + $ ./configure PKG_CONFIG_PATH=$PWD/../nghttp3/build/lib/pkgconfig:$PWD/../libressl/build/lib/pkgconfig + $ make -j$(nproc) check + +Client/Server +------------- + +After successful build, the client and server executable should be +found under examples directory. They talk HTTP/3. + +Client +~~~~~~ + +.. code-block:: shell + + $ examples/wsslclient [OPTIONS] <HOST> <PORT> [<URI>...] + +The notable options are: + +- ``-d``, ``--data=<PATH>``: Read data from <PATH> and send it to a + peer. + +Server +~~~~~~ + +.. code-block:: shell + + $ examples/wsslserver [OPTIONS] <ADDR> <PORT> <PRIVATE_KEY_FILE> <CERTIFICATE_FILE> + +The notable options are: + +- ``-V``, ``--validate-addr``: Enforce stateless address validation. + +H09wsslclient/H09wsslserver +--------------------------- + +There are h09wsslclient and h09wsslserver which speak HTTP/0.9. They +are written just for `quic-interop-runner +<https://github.com/marten-seemann/quic-interop-runner>`_. They share +the basic functionalities with HTTP/3 client and server but have less +functions (e.g., h09wsslclient does not have a capability to send +request body, and h09wsslserver does not understand numeric request +path, like /1000). + +Resumption and 0-RTT +-------------------- + +In order to resume a session, a session ticket, and a transport +parameters must be fetched from server. First, run +examples/wsslclient with --session-file, and --tp-file options which +specify a path to session ticket, and transport parameter files +respectively to save them locally. + +Once these files are available, run examples/wsslclient with the same +arguments again. You will see that session is resumed in your log if +resumption succeeds. Resuming session makes server's first Handshake +packet pretty small because it does not send its certificates. + +To send 0-RTT data, after making sure that resumption works, use -d +option to specify a file which contains data to send. + +Token (Not something included in Retry packet) +---------------------------------------------- + +QUIC server might send a token to client after connection has been +established. Client can send this token in subsequent connection to +the server. Server verifies the token and if it succeeds, the address +validation completes and lifts some restrictions on server which might +speed up transfer. In order to save and/or load a token, +use --token-file option of examples/wsslclient. The given file is +overwritten if it already exists when storing a token. + +Crypto helper library +--------------------- + +In order to make TLS stack integration less painful, we provide a +crypto helper library which offers the basic crypto operations. + +The header file exists under crypto/includes/ngtcp2 directory. + +Each library file is built for a particular TLS backend. The +available crypto helper libraries are: + +- libngtcp2_crypto_quictls: Use quictls and libressl as TLS backend +- libngtcp2_crypto_gnutls: Use GnuTLS as TLS backend +- libngtcp2_crypto_boringssl: Use BoringSSL and aws-lc as TLS backend +- libngtcp2_crypto_picotls: Use Picotls as TLS backend +- libngtcp2_crypto_wolfssl: Use wolfSSL as TLS backend + +Because BoringSSL and Picotls are an unversioned product, we only +tested their particular revision. See Requirements section above. + +We use Picotls with OpenSSL as crypto backend. + +The examples directory contains client and server that are linked to +those crypto helper libraries and TLS backends. They are only built +if their corresponding crypto helper library is built: + +- qtlsclient: quictls(libressl) client +- qtlsserver: quictls(libressl) server +- gtlsclient: GnuTLS client +- gtlsserver: GnuTLS server +- bsslclient: BoringSSL(aws-lc) client +- bsslserver: BoringSSL(aws-lc) server +- ptlsclient: Picotls client +- ptlsserver: Picotls server +- wsslclient: wolfSSL client +- wsslserver: wolfSSL server + +QUIC protocol extensions +------------------------- + +The library implements the following QUIC protocol extensions: + +- `An Unreliable Datagram Extension to QUIC + <https://datatracker.ietf.org/doc/html/rfc9221>`_ +- `Greasing the QUIC Bit + <https://datatracker.ietf.org/doc/html/rfc9287>`_ +- `Compatible Version Negotiation for QUIC + <https://datatracker.ietf.org/doc/html/rfc9368>`_ +- `QUIC Version 2 + <https://datatracker.ietf.org/doc/html/rfc9369>`_ + +Configuring Wireshark for QUIC +------------------------------ + +`Wireshark <https://www.wireshark.org/download.html>`_ can be configured to +analyze QUIC traffic using the following steps: + +1. Set *SSLKEYLOGFILE* environment variable: + + .. code-block:: shell + + $ export SSLKEYLOGFILE=quic_keylog_file + +2. Set the port that QUIC uses + + Go to *Preferences->Protocols->QUIC* and set the port the program + listens to. In the case of the example application this would be + the port specified on the command line. + +3. Set Pre-Master-Secret logfile + + Go to *Preferences->Protocols->TLS* and set the *Pre-Master-Secret + log file* to the same value that was specified for *SSLKEYLOGFILE*. + +4. Choose the correct network interface for capturing + + Make sure you choose the correct network interface for + capturing. For example, if using localhost choose the *loopback* + network interface on macos. + +5. Create a filter + + Create A filter for the udp.port and set the port to the port the + application is listening to. For example: + + .. code-block:: text + + udp.port == 7777 + +License +------- + +The MIT License + +Copyright (c) 2016 ngtcp2 contributors diff --git a/contrib/libs/ngtcp2/config-android.h b/contrib/libs/ngtcp2/config-android.h new file mode 100644 index 0000000000..135bd531fd --- /dev/null +++ b/contrib/libs/ngtcp2/config-android.h @@ -0,0 +1,3 @@ +#include "config-linux.h" + +#undef HAVE_EXPLICIT_BZERO diff --git a/contrib/libs/ngtcp2/config-ios.h b/contrib/libs/ngtcp2/config-ios.h new file mode 100644 index 0000000000..06b8ef5651 --- /dev/null +++ b/contrib/libs/ngtcp2/config-ios.h @@ -0,0 +1,4 @@ +#include "config-linux.h" +#include "config-osx.h" + +#undef HAVE_EXPLICIT_BZERO diff --git a/contrib/libs/ngtcp2/config-linux.h b/contrib/libs/ngtcp2/config-linux.h new file mode 100644 index 0000000000..51bc0edb00 --- /dev/null +++ b/contrib/libs/ngtcp2/config-linux.h @@ -0,0 +1,55 @@ + +/* Define to `int' if <sys/types.h> does not define. */ +/* #undef ssize_t */ + +/* Define to 1 to enable debug output. */ +/* #undef DEBUGBUILD */ + +/* Define to 1 if you have the <arpa/inet.h> header file. */ +#define HAVE_ARPA_INET_H 1 + +/* Define to 1 if you have the <netinet/in.h> header file. */ +#define HAVE_NETINET_IN_H 1 + +/* Define to 1 if you have the <netinet/ip.h> header file. */ +#define HAVE_NETINET_IP_H 1 + +/* Define to 1 if you have the <unistd.h> header file. */ +#define HAVE_UNISTD_H 1 + +/* Define to 1 if you have the <sys/endian.h> header file. */ +/* #undef HAVE_SYS_ENDIAN_H */ + +/* Define to 1 if you have the <endian.h> header file. */ +#define HAVE_ENDIAN_H 1 + +/* Define to 1 if you have the <byteswap.h> header file. */ +#define HAVE_BYTESWAP_H 1 + +/* Define to 1 if you have the <asm/types.h> header file. */ +#define HAVE_ASM_TYPES_H 1 + +/* Define to 1 if you have the <linux/netlink.h> header file. */ +#define HAVE_LINUX_NETLINK_H 1 + +/* Define to 1 if you have the <linux/rtnetlink.h> header file. */ +#define HAVE_LINUX_RTNETLINK_H 1 + +/* Define to 1 if you have the `be64toh' function, otherwise 0. */ +#define HAVE_DECL_BE64TOH 1 + +/* Define to 1 if you have the `bswap_64' function, otherwise 0. */ +#define HAVE_DECL_BSWAP_64 1 + +/* Define WORDS_BIGENDIAN to 1 if target architecture is big + endian. */ +/* #undef WORDS_BIGENDIAN */ + +/* Define to 1 if you have `libbrotlienc` and `libbrotlidec` libraries. */ +/* #undef HAVE_LIBBROTLI */ + +/* Define to 1 if you have the `explicit_bzero' function. */ +#define HAVE_EXPLICIT_BZERO 1 + +/* Define to 1 if you have the `memset_s' function. */ +/* #undef HAVE_MEMSET_S */ diff --git a/contrib/libs/ngtcp2/config-osx.h b/contrib/libs/ngtcp2/config-osx.h new file mode 100644 index 0000000000..8dd585cd9d --- /dev/null +++ b/contrib/libs/ngtcp2/config-osx.h @@ -0,0 +1,9 @@ +#include "config-linux.h" + +#undef HAVE_ENDIAN_H + +#undef HAVE_BYTESWAP_H + +#undef HAVE_DECL_BE64TOH + +#undef HAVE_DECL_BSWAP_64 diff --git a/contrib/libs/ngtcp2/config-win.h b/contrib/libs/ngtcp2/config-win.h new file mode 100644 index 0000000000..3b2f5e3dbb --- /dev/null +++ b/contrib/libs/ngtcp2/config-win.h @@ -0,0 +1,15 @@ +#include "config-linux.h" + +#undef HAVE_ARPA_INET_H + +#undef HAVE_NETINET_IN_H + +#undef HAVE_UNISTD_H + +#undef HAVE_ENDIAN_H + +#undef HAVE_BYTESWAP_H + +#undef HAVE_DECL_BE64TOH + +#undef HAVE_DECL_BSWAP_64 diff --git a/contrib/libs/ngtcp2/config.h b/contrib/libs/ngtcp2/config.h new file mode 100644 index 0000000000..4c1d2fe53f --- /dev/null +++ b/contrib/libs/ngtcp2/config.h @@ -0,0 +1,13 @@ +#pragma once + +#if defined(__ANDROID__) +# include "config-android.h" +#elif defined(__IOS__) +# include "config-ios.h" +#elif defined(__APPLE__) +# include "config-osx.h" +#elif defined(_MSC_VER) +# include "config-win.h" +#else +# include "config-linux.h" +#endif diff --git a/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2.h b/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2.h new file mode 100644 index 0000000000..680f5a2eeb --- /dev/null +++ b/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2.h @@ -0,0 +1,5915 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2017 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_H +#define NGTCP2_H + +/* Define WIN32 when build target is Win32 API (borrowed from + libcurl) */ +#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) +# define WIN32 +#endif /* (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) */ + +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable : 4324) +#endif /* defined(_MSC_VER) */ + +#include <stdlib.h> +#if defined(_MSC_VER) && (_MSC_VER < 1800) +/* MSVC < 2013 does not have inttypes.h because it is not C99 + compliant. See compiler macros and version number in + https://sourceforge.net/p/predef/wiki/Compilers/ */ +# include <stdint.h> +#else /* !(defined(_MSC_VER) && (_MSC_VER < 1800)) */ +# include <inttypes.h> +#endif /* !(defined(_MSC_VER) && (_MSC_VER < 1800)) */ +#include <sys/types.h> +#include <stdarg.h> +#include <stddef.h> + +#ifndef NGTCP2_USE_GENERIC_SOCKADDR +# ifdef WIN32 +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif /* !defined(WIN32_LEAN_AND_MEAN) */ +# include <ws2tcpip.h> +# else /* !defined(WIN32) */ +# include <sys/socket.h> +# include <netinet/in.h> +# endif /* !defined(WIN32) */ +#endif /* !defined(NGTCP2_USE_GENERIC_SOCKADDR) */ + +#include <ngtcp2/version.h> + +#if 1 +# define NGTCP2_EXTERN +#elif defined(WIN32) +# ifdef BUILDING_NGTCP2 +# define NGTCP2_EXTERN __declspec(dllexport) +# else /* !defined(BUILDING_NGTCP2) */ +# define NGTCP2_EXTERN __declspec(dllimport) +# endif /* !defined(BUILDING_NGTCP2) */ +#else /* !(defined(NGTCP2_STATICLIB) || defined(WIN32)) */ +# ifdef BUILDING_NGTCP2 +# define NGTCP2_EXTERN __attribute__((visibility("default"))) +# else /* !defined(BUILDING_NGTCP2) */ +# define NGTCP2_EXTERN +# endif /* !defined(BUILDING_NGTCP2) */ +#endif /* !(defined(NGTCP2_STATICLIB) || defined(WIN32)) */ + +#ifdef _MSC_VER +# define NGTCP2_ALIGN(N) __declspec(align(N)) +#else /* !defined(_MSC_VER) */ +# define NGTCP2_ALIGN(N) __attribute__((aligned(N))) +#endif /* !defined(_MSC_VER) */ + +#ifdef __cplusplus +extern "C" { +#endif /* defined(__cplusplus) */ + +/** + * @typedef + * + * :type:`ngtcp2_ssize` is signed counterpart of size_t. + */ +typedef ptrdiff_t ngtcp2_ssize; + +/** + * @functypedef + * + * :type:`ngtcp2_malloc` is a custom memory allocator to replace + * :manpage:`malloc(3)`. The |user_data| is + * :member:`ngtcp2_mem.user_data`. + */ +typedef void *(*ngtcp2_malloc)(size_t size, void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_free` is a custom memory allocator to replace + * :manpage:`free(3)`. The |user_data| is + * :member:`ngtcp2_mem.user_data`. + */ +typedef void (*ngtcp2_free)(void *ptr, void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_calloc` is a custom memory allocator to replace + * :manpage:`calloc(3)`. The |user_data| is the + * :member:`ngtcp2_mem.user_data`. + */ +typedef void *(*ngtcp2_calloc)(size_t nmemb, size_t size, void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_realloc` is a custom memory allocator to replace + * :manpage:`realloc(3)`. The |user_data| is the + * :member:`ngtcp2_mem.user_data`. + */ +typedef void *(*ngtcp2_realloc)(void *ptr, size_t size, void *user_data); + +/** + * @struct + * + * :type:`ngtcp2_mem` is a custom memory allocator. The + * :member:`user_data` field is passed to each allocator function. + * This can be used, for example, to achieve per-connection memory + * pool. + * + * In the following example code, ``my_malloc``, ``my_free``, + * ``my_calloc`` and ``my_realloc`` are the replacement of the + * standard allocators :manpage:`malloc(3)`, :manpage:`free(3)`, + * :manpage:`calloc(3)` and :manpage:`realloc(3)` respectively:: + * + * void *my_malloc_cb(size_t size, void *user_data) { + * (void)user_data; + * return my_malloc(size); + * } + * + * void my_free_cb(void *ptr, void *user_data) { + * (void)user_data; + * my_free(ptr); + * } + * + * void *my_calloc_cb(size_t nmemb, size_t size, void *user_data) { + * (void)user_data; + * return my_calloc(nmemb, size); + * } + * + * void *my_realloc_cb(void *ptr, size_t size, void *user_data) { + * (void)user_data; + * return my_realloc(ptr, size); + * } + * + * void conn_new() { + * ngtcp2_mem mem = {NULL, my_malloc_cb, my_free_cb, my_calloc_cb, + * my_realloc_cb}; + * + * ... + * } + */ +typedef struct ngtcp2_mem { + /** + * :member:`user_data` is an arbitrary user supplied data. This + * is passed to each allocator function. + */ + void *user_data; + /** + * :member:`malloc` is a custom allocator function to replace + * :manpage:`malloc(3)`. + */ + ngtcp2_malloc malloc; + /** + * :member:`free` is a custom allocator function to replace + * :manpage:`free(3)`. + */ + ngtcp2_free free; + /** + * :member:`calloc` is a custom allocator function to replace + * :manpage:`calloc(3)`. + */ + ngtcp2_calloc calloc; + /** + * :member:`realloc` is a custom allocator function to replace + * :manpage:`realloc(3)`. + */ + ngtcp2_realloc realloc; +} ngtcp2_mem; + +/** + * @macrosection + * + * Time related macros + */ + +/** + * @macro + * + * :macro:`NGTCP2_SECONDS` is a count of tick which corresponds to 1 + * second. + */ +#define NGTCP2_SECONDS ((ngtcp2_duration)1000000000ULL) + +/** + * @macro + * + * :macro:`NGTCP2_MILLISECONDS` is a count of tick which corresponds + * to 1 millisecond. + */ +#define NGTCP2_MILLISECONDS ((ngtcp2_duration)1000000ULL) + +/** + * @macro + * + * :macro:`NGTCP2_MICROSECONDS` is a count of tick which corresponds + * to 1 microsecond. + */ +#define NGTCP2_MICROSECONDS ((ngtcp2_duration)1000ULL) + +/** + * @macro + * + * :macro:`NGTCP2_NANOSECONDS` is a count of tick which corresponds to + * 1 nanosecond. + */ +#define NGTCP2_NANOSECONDS ((ngtcp2_duration)1ULL) + +/** + * @macrosection + * + * QUIC protocol version macros + */ + +/** + * @macro + * + * :macro:`NGTCP2_PROTO_VER_V1` is the QUIC version 1. + */ +#define NGTCP2_PROTO_VER_V1 ((uint32_t)0x00000001u) + +/** + * @macro + * + * :macro:`NGTCP2_PROTO_VER_V2` is the QUIC version 2. See + * :rfc:`9369`. + */ +#define NGTCP2_PROTO_VER_V2 ((uint32_t)0x6b3343cfu) + +/** + * @macro + * + * :macro:`NGTCP2_PROTO_VER_MAX` is the highest QUIC version that this + * library supports. Deprecated since v1.1.0. + */ +#define NGTCP2_PROTO_VER_MAX NGTCP2_PROTO_VER_V1 + +/** + * @macro + * + * :macro:`NGTCP2_PROTO_VER_MIN` is the lowest QUIC version that this + * library supports. Deprecated since v1.1.0. + */ +#define NGTCP2_PROTO_VER_MIN NGTCP2_PROTO_VER_V1 + +/** + * @macro + * + * :macro:`NGTCP2_RESERVED_VERSION_MASK` is the bit mask of reserved + * version. + */ +#define NGTCP2_RESERVED_VERSION_MASK 0x0a0a0a0au + +/** + * @macrosection + * + * UDP datagram related macros + */ + +/** + * @macro + * + * :macro:`NGTCP2_MAX_UDP_PAYLOAD_SIZE` is the default maximum UDP + * datagram payload size that the local endpoint transmits. + */ +#define NGTCP2_MAX_UDP_PAYLOAD_SIZE 1200 + +/** + * @macro + * + * :macro:`NGTCP2_MAX_PMTUD_UDP_PAYLOAD_SIZE` is the maximum UDP + * datagram payload size that Path MTU Discovery can discover. + */ +#define NGTCP2_MAX_PMTUD_UDP_PAYLOAD_SIZE 1452 + +/** + * @macrosection + * + * QUIC specific macros + */ + +/** + * @macro + * + * :macro:`NGTCP2_MAX_VARINT` is the maximum value which can be + * encoded in variable-length integer encoding. + */ +#define NGTCP2_MAX_VARINT ((1ULL << 62) - 1) + +/** + * @macro + * + * :macro:`NGTCP2_STATELESS_RESET_TOKENLEN` is the length of Stateless + * Reset Token. + */ +#define NGTCP2_STATELESS_RESET_TOKENLEN 16 + +/** + * @macro + * + * :macro:`NGTCP2_MIN_STATELESS_RESET_RANDLEN` is the minimum length + * of random bytes (Unpredictable Bits) in Stateless Reset packet. + */ +#define NGTCP2_MIN_STATELESS_RESET_RANDLEN 5 + +/** + * @macro + * + * :macro:`NGTCP2_PATH_CHALLENGE_DATALEN` is the length of + * PATH_CHALLENGE data. + */ +#define NGTCP2_PATH_CHALLENGE_DATALEN 8 + +/** + * @macro + * + * :macro:`NGTCP2_RETRY_KEY_V1` is an encryption key to create + * integrity tag of Retry packet. It is used for QUIC v1. + */ +#define NGTCP2_RETRY_KEY_V1 \ + "\xbe\x0c\x69\x0b\x9f\x66\x57\x5a\x1d\x76\x6b\x54\xe3\x68\xc8\x4e" + +/** + * @macro + * + * :macro:`NGTCP2_RETRY_NONCE_V1` is nonce used when generating + * integrity tag of Retry packet. It is used for QUIC v1. + */ +#define NGTCP2_RETRY_NONCE_V1 "\x46\x15\x99\xd3\x5d\x63\x2b\xf2\x23\x98\x25\xbb" + +/** + * @macro + * + * :macro:`NGTCP2_RETRY_KEY_V2` is an encryption key to create + * integrity tag of Retry packet. It is used for QUIC v2. See + * :rfc:`9369`. + */ +#define NGTCP2_RETRY_KEY_V2 \ + "\x8f\xb4\xb0\x1b\x56\xac\x48\xe2\x60\xfb\xcb\xce\xad\x7c\xcc\x92" + +/** + * @macro + * + * :macro:`NGTCP2_RETRY_NONCE_V2` is nonce used when generating + * integrity tag of Retry packet. It is used for QUIC v2. See + * :rfc:`9369`. + */ +#define NGTCP2_RETRY_NONCE_V2 "\xd8\x69\x69\xbc\x2d\x7c\x6d\x99\x90\xef\xb0\x4a" + +/** + * @macro + * + * :macro:`NGTCP2_HP_MASKLEN` is the length of header protection mask. + */ +#define NGTCP2_HP_MASKLEN 5 + +/** + * @macro + * + * :macro:`NGTCP2_HP_SAMPLELEN` is the number bytes sampled when + * encrypting a packet header. + */ +#define NGTCP2_HP_SAMPLELEN 16 + +/** + * @macro + * + * :macro:`NGTCP2_DEFAULT_INITIAL_RTT` is a default initial RTT. + */ +#define NGTCP2_DEFAULT_INITIAL_RTT (333 * NGTCP2_MILLISECONDS) + +/** + * @macro + * + * :macro:`NGTCP2_MAX_CIDLEN` is the maximum length of Connection ID. + */ +#define NGTCP2_MAX_CIDLEN 20 + +/** + * @macro + * + * :macro:`NGTCP2_MIN_CIDLEN` is the minimum length of Connection ID. + */ +#define NGTCP2_MIN_CIDLEN 1 + +/** + * @macro + * + * :macro:`NGTCP2_MIN_INITIAL_DCIDLEN` is the minimum length of + * Destination Connection ID in Client Initial packet if it does not + * bear token from Retry packet. + */ +#define NGTCP2_MIN_INITIAL_DCIDLEN 8 + +/** + * @macrosection + * + * ECN related macros + */ + +/** + * @macro + * + * :macro:`NGTCP2_ECN_NOT_ECT` indicates no ECN marking. + */ +#define NGTCP2_ECN_NOT_ECT 0x0 + +/** + * @macro + * + * :macro:`NGTCP2_ECN_ECT_1` is ECT(1) codepoint. + */ +#define NGTCP2_ECN_ECT_1 0x1 + +/** + * @macro + * + * :macro:`NGTCP2_ECN_ECT_0` is ECT(0) codepoint. + */ +#define NGTCP2_ECN_ECT_0 0x2 + +/** + * @macro + * + * :macro:`NGTCP2_ECN_CE` is CE codepoint. + */ +#define NGTCP2_ECN_CE 0x3 + +/** + * @macro + * + * :macro:`NGTCP2_ECN_MASK` is a bit mask to get ECN marking. + */ +#define NGTCP2_ECN_MASK 0x3 + +#define NGTCP2_PKT_INFO_V1 1 +#define NGTCP2_PKT_INFO_VERSION NGTCP2_PKT_INFO_V1 + +/** + * @struct + * + * :type:`ngtcp2_pkt_info` is a packet metadata. + */ +typedef struct NGTCP2_ALIGN(8) ngtcp2_pkt_info { + /** + * :member:`ecn` is ECN marking, and when it is passed to + * `ngtcp2_conn_read_pkt()`, it should be either + * :macro:`NGTCP2_ECN_NOT_ECT`, :macro:`NGTCP2_ECN_ECT_1`, + * :macro:`NGTCP2_ECN_ECT_0`, or :macro:`NGTCP2_ECN_CE`. + */ + uint8_t ecn; +} ngtcp2_pkt_info; + +/** + * @macrosection + * + * ngtcp2 library error codes + */ + +/** + * @macro + * + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` indicates that a passed + * argument is invalid. + */ +#define NGTCP2_ERR_INVALID_ARGUMENT -201 +/** + * @macro + * + * :macro:`NGTCP2_ERR_NOBUF` indicates that a provided buffer does not + * have enough space to store data. + */ +#define NGTCP2_ERR_NOBUF -202 +/** + * @macro + * + * :macro:`NGTCP2_ERR_PROTO` indicates a general protocol error. + */ +#define NGTCP2_ERR_PROTO -203 +/** + * @macro + * + * :macro:`NGTCP2_ERR_INVALID_STATE` indicates that a requested + * operation is not allowed at the current connection state. + */ +#define NGTCP2_ERR_INVALID_STATE -204 +/** + * @macro + * + * :macro:`NGTCP2_ERR_ACK_FRAME` indicates that an invalid ACK frame + * is received. + */ +#define NGTCP2_ERR_ACK_FRAME -205 +/** + * @macro + * + * :macro:`NGTCP2_ERR_STREAM_ID_BLOCKED` indicates that there is no + * spare stream ID available. + */ +#define NGTCP2_ERR_STREAM_ID_BLOCKED -206 +/** + * @macro + * + * :macro:`NGTCP2_ERR_STREAM_IN_USE` indicates that a stream ID is + * already in use. + */ +#define NGTCP2_ERR_STREAM_IN_USE -207 +/** + * @macro + * + * :macro:`NGTCP2_ERR_STREAM_DATA_BLOCKED` indicates that stream data + * cannot be sent because of flow control. + */ +#define NGTCP2_ERR_STREAM_DATA_BLOCKED -208 +/** + * @macro + * + * :macro:`NGTCP2_ERR_FLOW_CONTROL` indicates flow control error. + */ +#define NGTCP2_ERR_FLOW_CONTROL -209 +/** + * @macro + * + * :macro:`NGTCP2_ERR_CONNECTION_ID_LIMIT` indicates that the number + * of received Connection ID exceeds acceptable limit. + */ +#define NGTCP2_ERR_CONNECTION_ID_LIMIT -210 +/** + * @macro + * + * :macro:`NGTCP2_ERR_STREAM_LIMIT` indicates that a remote endpoint + * opens more streams that is permitted. + */ +#define NGTCP2_ERR_STREAM_LIMIT -211 +/** + * @macro + * + * :macro:`NGTCP2_ERR_FINAL_SIZE` indicates that inconsistent final + * size of a stream. + */ +#define NGTCP2_ERR_FINAL_SIZE -212 +/** + * @macro + * + * :macro:`NGTCP2_ERR_CRYPTO` indicates crypto (TLS) related error. + */ +#define NGTCP2_ERR_CRYPTO -213 +/** + * @macro + * + * :macro:`NGTCP2_ERR_PKT_NUM_EXHAUSTED` indicates that packet number + * is exhausted. + */ +#define NGTCP2_ERR_PKT_NUM_EXHAUSTED -214 +/** + * @macro + * + * :macro:`NGTCP2_ERR_REQUIRED_TRANSPORT_PARAM` indicates that a + * required transport parameter is missing. + */ +#define NGTCP2_ERR_REQUIRED_TRANSPORT_PARAM -215 +/** + * @macro + * + * :macro:`NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM` indicates that a + * transport parameter is malformed. + */ +#define NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM -216 +/** + * @macro + * + * :macro:`NGTCP2_ERR_FRAME_ENCODING` indicates there is an error in + * frame encoding. + */ +#define NGTCP2_ERR_FRAME_ENCODING -217 +/** + * @macro + * + * :macro:`NGTCP2_ERR_DECRYPT` indicates a decryption failure. + */ +#define NGTCP2_ERR_DECRYPT -218 +/** + * @macro + * + * :macro:`NGTCP2_ERR_STREAM_SHUT_WR` indicates no more data can be + * sent to a stream. + */ +#define NGTCP2_ERR_STREAM_SHUT_WR -219 +/** + * @macro + * + * :macro:`NGTCP2_ERR_STREAM_NOT_FOUND` indicates that a stream was + * not found. + */ +#define NGTCP2_ERR_STREAM_NOT_FOUND -220 +/** + * @macro + * + * :macro:`NGTCP2_ERR_STREAM_STATE` indicates that a requested + * operation is not allowed at the current stream state. + */ +#define NGTCP2_ERR_STREAM_STATE -221 +/** + * @macro + * + * :macro:`NGTCP2_ERR_RECV_VERSION_NEGOTIATION` indicates that Version + * Negotiation packet was received. + */ +#define NGTCP2_ERR_RECV_VERSION_NEGOTIATION -222 +/** + * @macro + * + * :macro:`NGTCP2_ERR_CLOSING` indicates that connection is in closing + * state. + */ +#define NGTCP2_ERR_CLOSING -223 +/** + * @macro + * + * :macro:`NGTCP2_ERR_DRAINING` indicates that connection is in + * draining state. + */ +#define NGTCP2_ERR_DRAINING -224 +/** + * @macro + * + * :macro:`NGTCP2_ERR_TRANSPORT_PARAM` indicates a general transport + * parameter error. + */ +#define NGTCP2_ERR_TRANSPORT_PARAM -225 +/** + * @macro + * + * :macro:`NGTCP2_ERR_DISCARD_PKT` indicates a packet was discarded. + */ +#define NGTCP2_ERR_DISCARD_PKT -226 +/** + * @macro + * + * :macro:`NGTCP2_ERR_CONN_ID_BLOCKED` indicates that there is no + * spare Connection ID available. + */ +#define NGTCP2_ERR_CONN_ID_BLOCKED -227 +/** + * @macro + * + * :macro:`NGTCP2_ERR_INTERNAL` indicates an internal error. + */ +#define NGTCP2_ERR_INTERNAL -228 +/** + * @macro + * + * :macro:`NGTCP2_ERR_CRYPTO_BUFFER_EXCEEDED` indicates that a crypto + * buffer exceeded. + */ +#define NGTCP2_ERR_CRYPTO_BUFFER_EXCEEDED -229 +/** + * @macro + * + * :macro:`NGTCP2_ERR_WRITE_MORE` indicates + * :macro:`NGTCP2_WRITE_STREAM_FLAG_MORE` is used and a function call + * succeeded. + */ +#define NGTCP2_ERR_WRITE_MORE -230 +/** + * @macro + * + * :macro:`NGTCP2_ERR_RETRY` indicates that server should send Retry + * packet. + */ +#define NGTCP2_ERR_RETRY -231 +/** + * @macro + * + * :macro:`NGTCP2_ERR_DROP_CONN` indicates that an endpoint should + * drop connection immediately. + */ +#define NGTCP2_ERR_DROP_CONN -232 +/** + * @macro + * + * :macro:`NGTCP2_ERR_AEAD_LIMIT_REACHED` indicates AEAD encryption + * limit is reached and key update is not available. An endpoint + * should drop connection immediately. + */ +#define NGTCP2_ERR_AEAD_LIMIT_REACHED -233 +/** + * @macro + * + * :macro:`NGTCP2_ERR_NO_VIABLE_PATH` indicates that path validation + * could not probe that a path is capable of sending UDP datagram + * payload of size at least 1200 bytes. + */ +#define NGTCP2_ERR_NO_VIABLE_PATH -234 +/** + * @macro + * + * :macro:`NGTCP2_ERR_VERSION_NEGOTIATION` indicates that server + * should send Version Negotiation packet. + */ +#define NGTCP2_ERR_VERSION_NEGOTIATION -235 +/** + * @macro + * + * :macro:`NGTCP2_ERR_HANDSHAKE_TIMEOUT` indicates that QUIC + * connection is not established before the specified deadline. + */ +#define NGTCP2_ERR_HANDSHAKE_TIMEOUT -236 +/** + * @macro + * + * :macro:`NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE` indicates the + * version negotiation failed. + */ +#define NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE -237 +/** + * @macro + * + * :macro:`NGTCP2_ERR_IDLE_CLOSE` indicates the connection should be + * closed silently because of idle timeout. + */ +#define NGTCP2_ERR_IDLE_CLOSE -238 +/** + * @macro + * + * :macro:`NGTCP2_ERR_FATAL` indicates that error codes less than this + * value is fatal error. When this error is returned, an endpoint + * should close connection immediately. + */ +#define NGTCP2_ERR_FATAL -500 +/** + * @macro + * + * :macro:`NGTCP2_ERR_NOMEM` indicates out of memory. + */ +#define NGTCP2_ERR_NOMEM -501 +/** + * @macro + * + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` indicates that user defined + * callback function failed. + */ +#define NGTCP2_ERR_CALLBACK_FAILURE -502 + +/** + * @macrosection + * + * QUIC packet header flags + */ + +/** + * @macro + * + * :macro:`NGTCP2_PKT_FLAG_NONE` indicates no flag set. + */ +#define NGTCP2_PKT_FLAG_NONE 0x00u + +/** + * @macro + * + * :macro:`NGTCP2_PKT_FLAG_LONG_FORM` indicates the Long header packet + * header. + */ +#define NGTCP2_PKT_FLAG_LONG_FORM 0x01u + +/** + * @macro + * + * :macro:`NGTCP2_PKT_FLAG_FIXED_BIT_CLEAR` indicates that Fixed Bit + * (aka QUIC bit) is not set. + */ +#define NGTCP2_PKT_FLAG_FIXED_BIT_CLEAR 0x02u + +/** + * @macro + * + * :macro:`NGTCP2_PKT_FLAG_KEY_PHASE` indicates Key Phase bit set. + */ +#define NGTCP2_PKT_FLAG_KEY_PHASE 0x04u + +/** + * @enum + * + * :type:`ngtcp2_pkt_type` defines QUIC version-independent QUIC + * packet types. + */ +typedef enum ngtcp2_pkt_type { + /** + * :enum:`NGTCP2_PKT_VERSION_NEGOTIATION` is defined by libngtcp2 + * for convenience. + */ + NGTCP2_PKT_VERSION_NEGOTIATION = 0x80, + /** + * :enum:`NGTCP2_PKT_STATELESS_RESET` is defined by libngtcp2 for + * convenience. + */ + NGTCP2_PKT_STATELESS_RESET = 0x81, + /** + * :enum:`NGTCP2_PKT_INITIAL` indicates Initial packet. + */ + NGTCP2_PKT_INITIAL = 0x10, + /** + * :enum:`NGTCP2_PKT_0RTT` indicates 0-RTT packet. + */ + NGTCP2_PKT_0RTT = 0x11, + /** + * :enum:`NGTCP2_PKT_HANDSHAKE` indicates Handshake packet. + */ + NGTCP2_PKT_HANDSHAKE = 0x12, + /** + * :enum:`NGTCP2_PKT_RETRY` indicates Retry packet. + */ + NGTCP2_PKT_RETRY = 0x13, + /** + * :enum:`NGTCP2_PKT_1RTT` is defined by libngtcp2 for convenience. + */ + NGTCP2_PKT_1RTT = 0x40 +} ngtcp2_pkt_type; + +/** + * @macrosection + * + * QUIC transport error code + */ + +/** + * @macro + * + * :macro:`NGTCP2_NO_ERROR` is QUIC transport error code ``NO_ERROR``. + */ +#define NGTCP2_NO_ERROR 0x0u + +/** + * @macro + * + * :macro:`NGTCP2_INTERNAL_ERROR` is QUIC transport error code + * ``INTERNAL_ERROR``. + */ +#define NGTCP2_INTERNAL_ERROR 0x1u + +/** + * @macro + * + * :macro:`NGTCP2_CONNECTION_REFUSED` is QUIC transport error code + * ``CONNECTION_REFUSED``. + */ +#define NGTCP2_CONNECTION_REFUSED 0x2u + +/** + * @macro + * + * :macro:`NGTCP2_FLOW_CONTROL_ERROR` is QUIC transport error code + * ``FLOW_CONTROL_ERROR``. + */ +#define NGTCP2_FLOW_CONTROL_ERROR 0x3u + +/** + * @macro + * + * :macro:`NGTCP2_STREAM_LIMIT_ERROR` is QUIC transport error code + * ``STREAM_LIMIT_ERROR``. + */ +#define NGTCP2_STREAM_LIMIT_ERROR 0x4u + +/** + * @macro + * + * :macro:`NGTCP2_STREAM_STATE_ERROR` is QUIC transport error code + * ``STREAM_STATE_ERROR``. + */ +#define NGTCP2_STREAM_STATE_ERROR 0x5u + +/** + * @macro + * + * :macro:`NGTCP2_FINAL_SIZE_ERROR` is QUIC transport error code + * ``FINAL_SIZE_ERROR``. + */ +#define NGTCP2_FINAL_SIZE_ERROR 0x6u + +/** + * @macro + * + * :macro:`NGTCP2_FRAME_ENCODING_ERROR` is QUIC transport error code + * ``FRAME_ENCODING_ERROR``. + */ +#define NGTCP2_FRAME_ENCODING_ERROR 0x7u + +/** + * @macro + * + * :macro:`NGTCP2_TRANSPORT_PARAMETER_ERROR` is QUIC transport error + * code ``TRANSPORT_PARAMETER_ERROR``. + */ +#define NGTCP2_TRANSPORT_PARAMETER_ERROR 0x8u + +/** + * @macro + * + * :macro:`NGTCP2_CONNECTION_ID_LIMIT_ERROR` is QUIC transport error + * code ``CONNECTION_ID_LIMIT_ERROR``. + */ +#define NGTCP2_CONNECTION_ID_LIMIT_ERROR 0x9u + +/** + * @macro + * + * :macro:`NGTCP2_PROTOCOL_VIOLATION` is QUIC transport error code + * ``PROTOCOL_VIOLATION``. + */ +#define NGTCP2_PROTOCOL_VIOLATION 0xau + +/** + * @macro + * + * :macro:`NGTCP2_INVALID_TOKEN` is QUIC transport error code + * ``INVALID_TOKEN``. + */ +#define NGTCP2_INVALID_TOKEN 0xbu + +/** + * @macro + * + * :macro:`NGTCP2_APPLICATION_ERROR` is QUIC transport error code + * ``APPLICATION_ERROR``. + */ +#define NGTCP2_APPLICATION_ERROR 0xcu + +/** + * @macro + * + * :macro:`NGTCP2_CRYPTO_BUFFER_EXCEEDED` is QUIC transport error code + * ``CRYPTO_BUFFER_EXCEEDED``. + */ +#define NGTCP2_CRYPTO_BUFFER_EXCEEDED 0xdu + +/** + * @macro + * + * :macro:`NGTCP2_KEY_UPDATE_ERROR` is QUIC transport error code + * ``KEY_UPDATE_ERROR``. + */ +#define NGTCP2_KEY_UPDATE_ERROR 0xeu + +/** + * @macro + * + * :macro:`NGTCP2_AEAD_LIMIT_REACHED` is QUIC transport error code + * ``AEAD_LIMIT_REACHED``. + */ +#define NGTCP2_AEAD_LIMIT_REACHED 0xfu + +/** + * @macro + * + * :macro:`NGTCP2_NO_VIABLE_PATH` is QUIC transport error code + * ``NO_VIABLE_PATH``. + */ +#define NGTCP2_NO_VIABLE_PATH 0x10u + +/** + * @macro + * + * :macro:`NGTCP2_CRYPTO_ERROR` is QUIC transport error code + * ``CRYPTO_ERROR``. + */ +#define NGTCP2_CRYPTO_ERROR 0x100u + +/** + * @macro + * + * :macro:`NGTCP2_VERSION_NEGOTIATION_ERROR` is QUIC transport error + * code ``VERSION_NEGOTIATION_ERROR``. See :rfc:`9368`. + */ +#define NGTCP2_VERSION_NEGOTIATION_ERROR 0x11 + +/** + * @enum + * + * :type:`ngtcp2_path_validation_result` defines path validation + * result code. + */ +typedef enum ngtcp2_path_validation_result { + /** + * :enum:`NGTCP2_PATH_VALIDATION_RESULT_SUCCESS` indicates + * successful validation. + */ + NGTCP2_PATH_VALIDATION_RESULT_SUCCESS, + /** + * :enum:`NGTCP2_PATH_VALIDATION_RESULT_FAILURE` indicates + * validation failure. + */ + NGTCP2_PATH_VALIDATION_RESULT_FAILURE, + /** + * :enum:`NGTCP2_PATH_VALIDATION_RESULT_ABORTED` indicates that path + * validation was aborted. + */ + NGTCP2_PATH_VALIDATION_RESULT_ABORTED +} ngtcp2_path_validation_result; + +/** + * @typedef + * + * :type:`ngtcp2_tstamp` is a timestamp with nanosecond resolution. + * ``UINT64_MAX`` is an invalid value, and it is often used to + * indicate that no value is set. + */ +typedef uint64_t ngtcp2_tstamp; + +/** + * @typedef + * + * :type:`ngtcp2_duration` is a period of time in nanosecond + * resolution. ``UINT64_MAX`` is an invalid value, and it is often + * used to indicate that no value is set. + */ +typedef uint64_t ngtcp2_duration; + +/** + * @struct + * + * :type:`ngtcp2_cid` holds a Connection ID. + */ +typedef struct ngtcp2_cid { + /** + * :member:`datalen` is the length of Connection ID. + */ + size_t datalen; + /** + * :member:`data` is the buffer to store Connection ID. + */ + uint8_t data[NGTCP2_MAX_CIDLEN]; +} ngtcp2_cid; + +/** + * @struct + * + * :type:`ngtcp2_vec` is struct iovec compatible structure to + * reference arbitrary array of bytes. + */ +typedef struct ngtcp2_vec { + /** + * :member:`base` points to the data. + */ + uint8_t *base; + /** + * :member:`len` is the number of bytes which the buffer pointed by + * base contains. + */ + size_t len; +} ngtcp2_vec; + +/** + * @function + * + * `ngtcp2_cid_init` initializes Connection ID |cid| with the byte + * string pointed by |data| and its length is |datalen|. |datalen| + * must be at most :macro:`NGTCP2_MAX_CIDLEN`. + */ +NGTCP2_EXTERN void ngtcp2_cid_init(ngtcp2_cid *cid, const uint8_t *data, + size_t datalen); + +/** + * @function + * + * `ngtcp2_cid_eq` returns nonzero if |a| and |b| share the same + * Connection ID. + */ +NGTCP2_EXTERN int ngtcp2_cid_eq(const ngtcp2_cid *a, const ngtcp2_cid *b); + +/** + * @struct + * + * :type:`ngtcp2_pkt_hd` represents QUIC packet header. + */ +typedef struct ngtcp2_pkt_hd { + /** + * :member:`dcid` is Destination Connection ID. + */ + ngtcp2_cid dcid; + /** + * :member:`scid` is Source Connection ID. + */ + ngtcp2_cid scid; + /** + * :member:`pkt_num` is a packet number. + */ + int64_t pkt_num; + /** + * :member:`token` contains token. Only Initial packet may contain + * token. NULL if no token is present. + */ + const uint8_t *token; + /** + * :member:`tokenlen` is the length of :member:`token`. 0 if no + * token is present. + */ + size_t tokenlen; + /** + * :member:`pkt_numlen` is the number of bytes spent to encode + * :member:`pkt_num`. + */ + size_t pkt_numlen; + /** + * :member:`len` is the sum of :member:`pkt_numlen` and the length + * of QUIC packet payload. + */ + size_t len; + /** + * :member:`version` is QUIC version. + */ + uint32_t version; + /** + * :member:`type` is a type of QUIC packet. This field does not + * have a QUIC packet type defined for a specific QUIC version. + * Instead, it contains version independent packet type defined by + * this library. See :type:`ngtcp2_pkt_type`. + */ + uint8_t type; + /** + * :member:`flags` is zero or more of :macro:`NGTCP2_PKT_FLAG_* + * <NGTCP2_PKT_FLAG_NONE>`. + */ + uint8_t flags; +} ngtcp2_pkt_hd; + +/** + * @struct + * + * :type:`ngtcp2_pkt_stateless_reset` represents Stateless Reset. + */ +typedef struct ngtcp2_pkt_stateless_reset { + /** + * :member:`stateless_reset_token` contains stateless reset token. + */ + uint8_t stateless_reset_token[NGTCP2_STATELESS_RESET_TOKENLEN]; + /** + * :member:`rand` points a buffer which contains random bytes + * section. + */ + const uint8_t *rand; + /** + * :member:`randlen` is the number of random bytes. + */ + size_t randlen; +} ngtcp2_pkt_stateless_reset; + +/** + * @macrosection + * + * QUIC transport parameters related macros + */ + +/** + * @macro + * + * :macro:`NGTCP2_DEFAULT_MAX_RECV_UDP_PAYLOAD_SIZE` is the default + * value of max_udp_payload_size transport parameter. + */ +#define NGTCP2_DEFAULT_MAX_RECV_UDP_PAYLOAD_SIZE 65527 + +/** + * @macro + * + * :macro:`NGTCP2_DEFAULT_ACK_DELAY_EXPONENT` is a default value of + * scaling factor of ACK Delay field in ACK frame. + */ +#define NGTCP2_DEFAULT_ACK_DELAY_EXPONENT 3 + +/** + * @macro + * + * :macro:`NGTCP2_DEFAULT_MAX_ACK_DELAY` is a default value of the + * maximum amount of time in nanoseconds by which endpoint delays + * sending acknowledgement. + */ +#define NGTCP2_DEFAULT_MAX_ACK_DELAY (25 * NGTCP2_MILLISECONDS) + +/** + * @macro + * + * :macro:`NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT` is the default + * value of active_connection_id_limit transport parameter value if + * omitted. + */ +#define NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT 2 + +/** + * @macro + * + * :macro:`NGTCP2_TLSEXT_QUIC_TRANSPORT_PARAMETERS_V1` is TLS + * extension type of quic_transport_parameters. + */ +#define NGTCP2_TLSEXT_QUIC_TRANSPORT_PARAMETERS_V1 0x39u + +#ifdef NGTCP2_USE_GENERIC_SOCKADDR +# ifndef NGTCP2_AF_INET +# error NGTCP2_AF_INET must be defined +# endif /* !defined(NGTCP2_AF_INET) */ + +# ifndef NGTCP2_AF_INET6 +# error NGTCP2_AF_INET6 must be defined +# endif /* !defined(NGTCP2_AF_INET6) */ + +typedef unsigned short int ngtcp2_sa_family; +typedef uint16_t ngtcp2_in_port; + +typedef struct ngtcp2_sockaddr { + ngtcp2_sa_family sa_family; + uint8_t sa_data[14]; +} ngtcp2_sockaddr; + +typedef struct ngtcp2_in_addr { + uint32_t s_addr; +} ngtcp2_in_addr; + +typedef struct ngtcp2_sockaddr_in { + ngtcp2_sa_family sin_family; + ngtcp2_in_port sin_port; + ngtcp2_in_addr sin_addr; + uint8_t sin_zero[8]; +} ngtcp2_sockaddr_in; + +typedef struct ngtcp2_in6_addr { + uint8_t in6_addr[16]; +} ngtcp2_in6_addr; + +typedef struct ngtcp2_sockaddr_in6 { + ngtcp2_sa_family sin6_family; + ngtcp2_in_port sin6_port; + uint32_t sin6_flowinfo; + ngtcp2_in6_addr sin6_addr; + uint32_t sin6_scope_id; +} ngtcp2_sockaddr_in6; + +typedef uint32_t ngtcp2_socklen; +#else /* !defined(NGTCP2_USE_GENERIC_SOCKADDR) */ +# define NGTCP2_AF_INET AF_INET +# define NGTCP2_AF_INET6 AF_INET6 + +/** + * @typedef + * + * :type:`ngtcp2_sockaddr` is typedefed to struct sockaddr. If + * :macro:`NGTCP2_USE_GENERIC_SOCKADDR` is defined, it is typedefed to + * the generic struct sockaddr defined in ngtcp2.h. + */ +typedef struct sockaddr ngtcp2_sockaddr; +/** + * @typedef + * + * :type:`ngtcp2_sockaddr_in` is typedefed to struct sockaddr_in. If + * :macro:`NGTCP2_USE_GENERIC_SOCKADDR` is defined, it is typedefed to + * the generic struct sockaddr_in defined in ngtcp2.h. + */ +typedef struct sockaddr_in ngtcp2_sockaddr_in; +/** + * @typedef + * + * :type:`ngtcp2_sockaddr_in6` is typedefed to struct sockaddr_in6. + * If :macro:`NGTCP2_USE_GENERIC_SOCKADDR` is defined, it is typedefed + * to the generic struct sockaddr_in6 defined in ngtcp2.h. + */ +typedef struct sockaddr_in6 ngtcp2_sockaddr_in6; +/** + * @typedef + * + * :type:`ngtcp2_socklen` is typedefed to socklen_t. If + * :macro:`NGTCP2_USE_GENERIC_SOCKADDR` is defined, it is typedefed to + * uint32_t. + */ +typedef socklen_t ngtcp2_socklen; +#endif /* !defined(NGTCP2_USE_GENERIC_SOCKADDR) */ + +/** + * @struct + * + * :type:`ngtcp2_sockaddr_union` conveniently includes all supported + * address types. + */ +typedef union ngtcp2_sockaddr_union { + ngtcp2_sockaddr sa; + ngtcp2_sockaddr_in in; + ngtcp2_sockaddr_in6 in6; +} ngtcp2_sockaddr_union; + +/** + * @struct + * + * :type:`ngtcp2_preferred_addr` represents preferred address + * structure. + */ +typedef struct ngtcp2_preferred_addr { + /** + * :member:`cid` is a Connection ID. + */ + ngtcp2_cid cid; + /** + * :member:`ipv4` contains IPv4 address and port. + */ + ngtcp2_sockaddr_in ipv4; + /** + * :member:`ipv6` contains IPv6 address and port. + */ + ngtcp2_sockaddr_in6 ipv6; + /** + * :member:`ipv4_present` indicates that :member:`ipv4` contains + * IPv4 address and port. + */ + uint8_t ipv4_present; + /** + * :member:`ipv6_present` indicates that :member:`ipv6` contains + * IPv6 address and port. + */ + uint8_t ipv6_present; + /** + * :member:`stateless_reset_token` contains stateless reset token. + */ + uint8_t stateless_reset_token[NGTCP2_STATELESS_RESET_TOKENLEN]; +} ngtcp2_preferred_addr; + +/** + * @struct + * + * :type:`ngtcp2_version_info` represents version_information + * structure. See :rfc:`9368`. + */ +typedef struct ngtcp2_version_info { + /** + * :member:`chosen_version` is the version chosen by the sender. + */ + uint32_t chosen_version; + /** + * :member:`available_versions` points the wire image of + * available_versions field. The each version is therefore in + * network byte order. + */ + const uint8_t *available_versions; + /** + * :member:`available_versionslen` is the number of bytes pointed by + * :member:`available_versions`, not the number of versions + * included. + */ + size_t available_versionslen; +} ngtcp2_version_info; + +#define NGTCP2_TRANSPORT_PARAMS_V1 1 +#define NGTCP2_TRANSPORT_PARAMS_VERSION NGTCP2_TRANSPORT_PARAMS_V1 + +/** + * @struct + * + * :type:`ngtcp2_transport_params` represents QUIC transport + * parameters. + */ +typedef struct ngtcp2_transport_params { + /** + * :member:`preferred_addr` contains preferred address if + * :member:`preferred_addr_present` is nonzero. + */ + ngtcp2_preferred_addr preferred_addr; + /** + * :member:`original_dcid` is the Destination Connection ID field + * from the first Initial packet from client. Server must specify + * this field and set :member:`original_dcid_present` to nonzero. + * It is expected that application knows the original Destination + * Connection ID even if it sends Retry packet, for example, by + * including it in retry token. Otherwise, application should not + * specify this field. + */ + ngtcp2_cid original_dcid; + /** + * :member:`initial_scid` is the Source Connection ID field from the + * first Initial packet the local endpoint sends. Application + * should not specify this field. If :member:`initial_scid_present` + * is set to nonzero, it indicates this field is set. + */ + ngtcp2_cid initial_scid; + /** + * :member:`retry_scid` is the Source Connection ID field from Retry + * packet. Only server uses this field. If server application + * received Initial packet with retry token from client, and server + * successfully verified its token, server application must set + * Destination Connection ID field from the Initial packet to this + * field, and set :member:`retry_scid_present` to nonzero. Server + * application must verify that the Destination Connection ID from + * Initial packet was sent in Retry packet by, for example, + * including the Connection ID in a token, or including it in AAD + * when encrypting a token. + */ + ngtcp2_cid retry_scid; + /** + * :member:`initial_max_stream_data_bidi_local` is the size of flow + * control window of locally initiated stream. This is the number + * of bytes that the remote endpoint can send, and the local + * endpoint must ensure that it has enough buffer to receive them. + */ + uint64_t initial_max_stream_data_bidi_local; + /** + * :member:`initial_max_stream_data_bidi_remote` is the size of flow + * control window of remotely initiated stream. This is the number + * of bytes that the remote endpoint can send, and the local + * endpoint must ensure that it has enough buffer to receive them. + */ + uint64_t initial_max_stream_data_bidi_remote; + /** + * :member:`initial_max_stream_data_uni` is the size of flow control + * window of remotely initiated unidirectional stream. This is the + * number of bytes that the remote endpoint can send, and the local + * endpoint must ensure that it has enough buffer to receive them. + */ + uint64_t initial_max_stream_data_uni; + /** + * :member:`initial_max_data` is the connection level flow control + * window. + */ + uint64_t initial_max_data; + /** + * :member:`initial_max_streams_bidi` is the number of concurrent + * streams that the remote endpoint can create. + */ + uint64_t initial_max_streams_bidi; + /** + * :member:`initial_max_streams_uni` is the number of concurrent + * unidirectional streams that the remote endpoint can create. + */ + uint64_t initial_max_streams_uni; + /** + * :member:`max_idle_timeout` is a duration during which sender + * allows quiescent. 0 means no idle timeout. It must not be + * UINT64_MAX. + */ + ngtcp2_duration max_idle_timeout; + /** + * :member:`max_udp_payload_size` is the maximum UDP payload size + * that the local endpoint can receive. + */ + uint64_t max_udp_payload_size; + /** + * :member:`active_connection_id_limit` is the maximum number of + * Connection ID that sender can store. + */ + uint64_t active_connection_id_limit; + /** + * :member:`ack_delay_exponent` is the exponent used in ACK Delay + * field in ACK frame. + */ + uint64_t ack_delay_exponent; + /** + * :member:`max_ack_delay` is the maximum acknowledgement delay by + * which the local endpoint will delay sending acknowledgements. It + * must be strictly less than (1 << 14) milliseconds. + * Sub-millisecond part is dropped when sending it in a QUIC + * transport parameter. + */ + ngtcp2_duration max_ack_delay; + /** + * :member:`max_datagram_frame_size` is the maximum size of DATAGRAM + * frame that the local endpoint willingly receives. Specifying 0 + * disables DATAGRAM support. See :rfc:`9221`. + */ + uint64_t max_datagram_frame_size; + /** + * :member:`stateless_reset_token_present` is nonzero if + * :member:`stateless_reset_token` field is set. + */ + uint8_t stateless_reset_token_present; + /** + * :member:`disable_active_migration` is nonzero if the local + * endpoint does not support active connection migration. + */ + uint8_t disable_active_migration; + /** + * :member:`original_dcid_present` is nonzero if + * :member:`original_dcid` field is set. + */ + uint8_t original_dcid_present; + /** + * :member:`initial_scid_present` is nonzero if + * :member:`initial_scid` field is set. + */ + uint8_t initial_scid_present; + /** + * :member:`retry_scid_present` is nonzero if :member:`retry_scid` + * field is set. + */ + uint8_t retry_scid_present; + /** + * :member:`preferred_addr_present` is nonzero if + * :member:`preferred_address` is set. + */ + uint8_t preferred_addr_present; + /** + * :member:`stateless_reset_token` contains stateless reset token. + */ + uint8_t stateless_reset_token[NGTCP2_STATELESS_RESET_TOKENLEN]; + /** + * :member:`grease_quic_bit` is nonzero if sender supports "Greasing + * the QUIC Bit" extension. See :rfc:`9287`. + */ + uint8_t grease_quic_bit; + /** + * :member:`version_info` contains version_information field if + * :member:`version_info_present` is nonzero. Application should + * not specify this field. + */ + ngtcp2_version_info version_info; + /** + * :member:`version_info_present` is nonzero if + * :member:`version_info` is set. Application should not specify + * this field. + */ + uint8_t version_info_present; +} ngtcp2_transport_params; + +#define NGTCP2_CONN_INFO_V1 1 +#define NGTCP2_CONN_INFO_VERSION NGTCP2_CONN_INFO_V1 + +/** + * @struct + * + * :type:`ngtcp2_conn_info` holds various connection statistics. + */ +typedef struct ngtcp2_conn_info { + /** + * :member:`latest_rtt` is the latest RTT sample which is not + * adjusted by acknowledgement delay. + */ + ngtcp2_duration latest_rtt; + /** + * :member:`min_rtt` is the minimum RTT seen so far. It is not + * adjusted by acknowledgement delay. + */ + ngtcp2_duration min_rtt; + /** + * :member:`smoothed_rtt` is the smoothed RTT. + */ + ngtcp2_duration smoothed_rtt; + /** + * :member:`rttvar` is a mean deviation of observed RTT. + */ + ngtcp2_duration rttvar; + /** + * :member:`cwnd` is the size of congestion window. + */ + uint64_t cwnd; + /** + * :member:`ssthresh` is slow start threshold. + */ + uint64_t ssthresh; + /** + * :member:`bytes_in_flight` is the number in bytes of all sent + * packets which have not been acknowledged. + */ + uint64_t bytes_in_flight; +} ngtcp2_conn_info; + +/** + * @enum + * + * :type:`ngtcp2_cc_algo` defines congestion control algorithms. + */ +typedef enum ngtcp2_cc_algo { + /** + * :enum:`NGTCP2_CC_ALGO_RENO` represents Reno. + */ + NGTCP2_CC_ALGO_RENO = 0x00, + /** + * :enum:`NGTCP2_CC_ALGO_CUBIC` represents Cubic. + */ + NGTCP2_CC_ALGO_CUBIC = 0x01, + /** + * :enum:`NGTCP2_CC_ALGO_BBR` represents BBR v2. + */ + NGTCP2_CC_ALGO_BBR = 0x02 +} ngtcp2_cc_algo; + +/** + * @functypedef + * + * :type:`ngtcp2_printf` is a callback function for logging. + * |user_data| is the same object passed to `ngtcp2_conn_client_new` + * or `ngtcp2_conn_server_new`. + */ +typedef void (*ngtcp2_printf)(void *user_data, const char *format, ...); + +/** + * @macrosection + * + * QLog related macros + */ + +/** + * @macro + * + * :macro:`NGTCP2_QLOG_WRITE_FLAG_NONE` indicates no flag set. + */ +#define NGTCP2_QLOG_WRITE_FLAG_NONE 0x00u +/** + * @macro + * + * :macro:`NGTCP2_QLOG_WRITE_FLAG_FIN` indicates that this is the + * final call to :type:`ngtcp2_qlog_write` in the current connection. + */ +#define NGTCP2_QLOG_WRITE_FLAG_FIN 0x01u + +/** + * @struct + * + * :type:`ngtcp2_rand_ctx` is a wrapper around native random number + * generator. It is opaque to the ngtcp2 library. This might be + * useful if application needs to specify random number generator per + * thread or per connection. + */ +typedef struct ngtcp2_rand_ctx { + /** + * :member:`native_handle` is a pointer to an underlying random + * number generator. + */ + void *native_handle; +} ngtcp2_rand_ctx; + +/** + * @functypedef + * + * :type:`ngtcp2_qlog_write` is a callback function which is called to + * write qlog |data| of length |datalen| bytes. |flags| is bitwise OR + * of zero or more of :macro:`NGTCP2_QLOG_WRITE_FLAG_* + * <NGTCP2_QLOG_WRITE_FLAG_NONE>`. If + * :macro:`NGTCP2_QLOG_WRITE_FLAG_FIN` is set, |datalen| may be 0. + */ +typedef void (*ngtcp2_qlog_write)(void *user_data, uint32_t flags, + const void *data, size_t datalen); + +/** + * @enum + * + * :type:`ngtcp2_token_type` defines the type of token. + */ +typedef enum ngtcp2_token_type { + /** + * :enum:`NGTCP2_TOKEN_TYPE_UNKNOWN` indicates that the type of + * token is unknown. + */ + NGTCP2_TOKEN_TYPE_UNKNOWN, + /** + * :enum:`NGTCP2_TOKEN_TYPE_RETRY` indicates that a token comes from + * Retry packet. + */ + NGTCP2_TOKEN_TYPE_RETRY, + /** + * :enum:`NGTCP2_TOKEN_TYPE_NEW_TOKEN` indicates that a token comes + * from NEW_TOKEN frame. + */ + NGTCP2_TOKEN_TYPE_NEW_TOKEN +} ngtcp2_token_type; + +#define NGTCP2_SETTINGS_V1 1 +#define NGTCP2_SETTINGS_V2 2 +#define NGTCP2_SETTINGS_VERSION NGTCP2_SETTINGS_V2 + +/** + * @struct + * + * :type:`ngtcp2_settings` defines QUIC connection settings. + */ +typedef struct ngtcp2_settings { + /** + * :member:`qlog_write` is a callback function to write qlog. + * Setting ``NULL`` disables qlog. + */ + ngtcp2_qlog_write qlog_write; + /** + * :member:`cc_algo` specifies congestion control algorithm. + */ + ngtcp2_cc_algo cc_algo; + /** + * :member:`initial_ts` is an initial timestamp given to the + * library. + */ + ngtcp2_tstamp initial_ts; + /** + * :member:`initial_rtt` is an initial RTT. + */ + ngtcp2_duration initial_rtt; + /** + * :member:`log_printf` is a function that the library uses to write + * logs. ``NULL`` means no logging output. It is nothing to do + * with qlog. + */ + ngtcp2_printf log_printf; + /** + * :member:`max_tx_udp_payload_size` is the maximum size of UDP + * datagram payload that the local endpoint transmits. + */ + size_t max_tx_udp_payload_size; + /** + * :member:`token` is a token from Retry packet or NEW_TOKEN frame. + * + * Server sets this field if it received the token in Client Initial + * packet and successfully validated. It should also set + * :member:`token_type` field. + * + * Client sets this field if it intends to send token in its Initial + * packet. + * + * `ngtcp2_conn_server_new` and `ngtcp2_conn_client_new` make a copy + * of token. + * + * Set NULL if there is no token. + */ + const uint8_t *token; + /** + * :member:`tokenlen` is the length of :member:`token`. Set 0 if + * there is no token. + */ + size_t tokenlen; + /** + * :member:`token_type` is the type of token. Server application + * should set this field. + */ + ngtcp2_token_type token_type; + /** + * :member:`rand_ctx` is an optional random number generator to be + * passed to :type:`ngtcp2_rand` callback. + */ + ngtcp2_rand_ctx rand_ctx; + /** + * :member:`max_window` is the maximum connection-level flow control + * window if connection-level window auto-tuning is enabled. The + * connection-level window auto tuning is enabled if nonzero value + * is specified in this field. The initial value of window size is + * :member:`ngtcp2_transport_params.initial_max_data`. The window + * size is scaled up to the value specified in this field. + */ + uint64_t max_window; + /** + * :member:`max_stream_window` is the maximum stream-level flow + * control window if stream-level window auto-tuning is enabled. + * The stream-level window auto-tuning is enabled if nonzero value + * is specified in this field. The initial value of window size is + * :member:`ngtcp2_transport_params.initial_max_stream_data_bidi_remote`, + * :member:`ngtcp2_transport_params.initial_max_stream_data_bidi_local`, + * or :member:`ngtcp2_transport_params.initial_max_stream_data_uni`, + * depending on the type of stream. The window size is scaled up to + * the value specified in this field. + */ + uint64_t max_stream_window; + /** + * :member:`ack_thresh` is the minimum number of the received ACK + * eliciting packets that trigger the immediate acknowledgement from + * the local endpoint. + */ + size_t ack_thresh; + /** + * :member:`no_tx_udp_payload_size_shaping`, if set to nonzero, + * instructs the library not to limit the UDP payload size to + * :macro:`NGTCP2_MAX_UDP_PAYLOAD_SIZE` (which can be extended by + * Path MTU Discovery), and instead use the minimum size among the + * given buffer size, :member:`max_tx_udp_payload_size`, and the + * received max_udp_payload_size QUIC transport parameter. + */ + uint8_t no_tx_udp_payload_size_shaping; + /** + * :member:`handshake_timeout` is the period of time before giving + * up QUIC connection establishment. If QUIC handshake is not + * complete within this period, `ngtcp2_conn_handle_expiry` returns + * :macro:`NGTCP2_ERR_HANDSHAKE_TIMEOUT` error. The deadline is + * :member:`initial_ts` + :member:`handshake_timeout`. If this + * field is set to ``UINT64_MAX``, no handshake timeout is set. + */ + ngtcp2_duration handshake_timeout; + /** + * :member:`preferred_versions` is the array of versions that are + * preferred by the local endpoint. All versions set in this array + * must be supported by the library, and compatible to QUIC v1. The + * reserved versions are not allowed. They are sorted in the order + * of preference. + * + * On compatible version negotiation, server will negotiate one of + * those versions contained in this array if there is some overlap + * between these versions and the versions offered by the client. + * If there is no overlap, but the client chosen version is + * supported by the library, the server chooses the client chosen + * version as the negotiated version. This version set corresponds + * to Offered Versions described in :rfc:`9368`, and it should be + * included in Version Negotiation packet. + * + * Client uses this field and :member:`original_version` to prevent + * version downgrade attack if it reacted upon Version Negotiation + * packet. If this field is specified, client must include + * |client_chosen_version| passed to `ngtcp2_conn_client_new` unless + * |client_chosen_version| is a reserved version. + */ + const uint32_t *preferred_versions; + /** + * :member:`preferred_versionslen` is the number of versions that + * are contained in the array pointed by + * :member:`preferred_versions`. + */ + size_t preferred_versionslen; + /** + * :member:`available_versions` is the array of versions that are + * going to be set in :member:`available_versions + * <ngtcp2_version_info.available_versions>` field of outgoing + * version_information QUIC transport parameter. + * + * For server, this corresponds to Fully-Deployed Versions described + * in :rfc:`9368`. If this field is not set, it is set to + * :member:`preferred_versions` internally if + * :member:`preferred_versionslen` is not zero. If this field is + * not set, and :member:`preferred_versionslen` is zero, this field + * is set to :macro:`NGTCP2_PROTO_VER_V1` internally. + * + * Client must include |client_chosen_version| passed to + * `ngtcp2_conn_client_new` in this array if this field is set and + * |client_chosen_version| is not a reserved version. If this field + * is not set, |client_chosen_version| passed to + * `ngtcp2_conn_client_new` will be set in this field internally + * unless |client_chosen_version| is a reserved version. + */ + const uint32_t *available_versions; + /** + * :member:`available_versionslen` is the number of versions that + * are contained in the array pointed by + * :member:`available_versions`. + */ + size_t available_versionslen; + /** + * :member:`original_version` is the original version that client + * initially used to make a connection attempt. If it is set, and + * it differs from |client_chosen_version| passed to + * `ngtcp2_conn_client_new`, the library assumes that client reacted + * upon Version Negotiation packet. Server does not use this field. + */ + uint32_t original_version; + /** + * :member:`no_pmtud`, if set to nonzero, disables Path MTU + * Discovery. + */ + uint8_t no_pmtud; + /** + * :member:`initial_pkt_num` is the initial packet number for each + * packet number space. It must be in range [0, INT32_MAX], + * inclusive. + */ + uint32_t initial_pkt_num; + /* The following fields have been added since NGTCP2_SETTINGS_V2. */ + /** + * :member:`pmtud_probes` is the array of UDP datagram payload size + * to probe during Path MTU Discovery. The discovery is done in the + * order appeared in this array. The size must be strictly larger + * than 1200, otherwise the behavior is undefined. The maximum + * value in this array should be set to + * :member:`max_tx_udp_payload_size`. If this field is not set, the + * predefined PMTUD probes are made. This field has been available + * since v1.4.0. + */ + const uint16_t *pmtud_probes; + /** + * :member:`pmtud_probeslen` is the number of elements that are + * contained in the array pointed by :member:`pmtud_probes`. This + * field has been available since v1.4.0. + */ + size_t pmtud_probeslen; +} ngtcp2_settings; + +/** + * @struct + * + * :type:`ngtcp2_addr` is the endpoint address. + */ +typedef struct ngtcp2_addr { + /** + * :member:`addr` points to the buffer which contains endpoint + * address. It must not be ``NULL``. + */ + ngtcp2_sockaddr *addr; + /** + * :member:`addrlen` is the length of :member:`addr`. It must not + * be longer than sizeof(:type:`ngtcp2_sockaddr_union`). + */ + ngtcp2_socklen addrlen; +} ngtcp2_addr; + +/** + * @struct + * + * :type:`ngtcp2_path` is the network endpoints where a packet is sent + * and received. + */ +typedef struct ngtcp2_path { + /** + * :member:`local` is the address of local endpoint. + */ + ngtcp2_addr local; + /** + * :member:`remote` is the address of remote endpoint. + */ + ngtcp2_addr remote; + /** + * :member:`user_data` is an arbitrary data and opaque to the + * library. + * + * Note that :type:`ngtcp2_path` is generally passed to + * :type:`ngtcp2_conn` by an application, and :type:`ngtcp2_conn` + * stores their copies. Unfortunately, there is no way for the + * application to know when :type:`ngtcp2_conn` finished using a + * specific :type:`ngtcp2_path` object in mid connection, which + * means that the application cannot free the data pointed by this + * field. Therefore, it is advised to use this field only when the + * data pointed by this field persists in an entire lifetime of the + * connection. + */ + void *user_data; +} ngtcp2_path; + +/** + * @struct + * + * :type:`ngtcp2_path_storage` is a convenient struct to have buffers + * to store the longest addresses. + */ +typedef struct ngtcp2_path_storage { + /** + * :member:`path` stores network path. + */ + ngtcp2_path path; + /** + * :member:`local_addrbuf` is a buffer to store local address. + */ + ngtcp2_sockaddr_union local_addrbuf; + /** + * :member:`remote_addrbuf` is a buffer to store remote address. + */ + ngtcp2_sockaddr_union remote_addrbuf; +} ngtcp2_path_storage; + +/** + * @struct + * + * :type:`ngtcp2_crypto_md` is a wrapper around native message digest + * object. + */ +typedef struct ngtcp2_crypto_md { + /** + * :member:`native_handle` is a pointer to an underlying message + * digest object. + */ + void *native_handle; +} ngtcp2_crypto_md; + +/** + * @struct + * + * :type:`ngtcp2_crypto_aead` is a wrapper around native AEAD object. + */ +typedef struct ngtcp2_crypto_aead { + /** + * :member:`native_handle` is a pointer to an underlying AEAD + * object. + */ + void *native_handle; + /** + * :member:`max_overhead` is the number of additional bytes which + * AEAD encryption needs on encryption. + */ + size_t max_overhead; +} ngtcp2_crypto_aead; + +/** + * @struct + * + * :type:`ngtcp2_crypto_cipher` is a wrapper around native cipher + * object. + */ +typedef struct ngtcp2_crypto_cipher { + /** + * :member:`native_handle` is a pointer to an underlying cipher + * object. + */ + void *native_handle; +} ngtcp2_crypto_cipher; + +/** + * @struct + * + * :type:`ngtcp2_crypto_aead_ctx` is a wrapper around native AEAD + * cipher context object. It should be initialized with a specific + * key. ngtcp2 library reuses this context object to encrypt or + * decrypt multiple packets. + */ +typedef struct ngtcp2_crypto_aead_ctx { + /** + * :member:`native_handle` is a pointer to an underlying AEAD + * context object. + */ + void *native_handle; +} ngtcp2_crypto_aead_ctx; + +/** + * @struct + * + * :type:`ngtcp2_crypto_cipher_ctx` is a wrapper around native cipher + * context object. It should be initialized with a specific key. + * ngtcp2 library reuses this context object to encrypt or decrypt + * multiple packet headers. + */ +typedef struct ngtcp2_crypto_cipher_ctx { + /** + * :member:`native_handle` is a pointer to an underlying cipher + * context object. + */ + void *native_handle; +} ngtcp2_crypto_cipher_ctx; + +/** + * @struct + * + * :type:`ngtcp2_crypto_ctx` is a convenient structure to bind all + * crypto related objects in one place. Use + * `ngtcp2_crypto_ctx_initial` to initialize this struct for Initial + * packet encryption. For Handshake and 1-RTT packets, use + * `ngtcp2_crypto_ctx_tls`. For 0-RTT packets, use + * `ngtcp2_crypto_ctx_tls_early`. + */ +typedef struct ngtcp2_crypto_ctx { + /** + * :member:`aead` is AEAD object. + */ + ngtcp2_crypto_aead aead; + /** + * :member:`md` is message digest object. + */ + ngtcp2_crypto_md md; + /** + * :member:`hp` is header protection cipher. + */ + ngtcp2_crypto_cipher hp; + /** + * :member:`max_encryption` is the number of encryption which this + * key can be used with. + */ + uint64_t max_encryption; + /** + * :member:`max_decryption_failure` is the number of decryption + * failure with this key. + */ + uint64_t max_decryption_failure; +} ngtcp2_crypto_ctx; + +/** + * @function + * + * `ngtcp2_transport_params_encode` encodes |params| in |dest| of + * length |destlen|. + * + * If |dest| is NULL, and |destlen| is zero, this function just + * returns the number of bytes required to store the encoded transport + * parameters. + * + * This function returns the number of bytes written, or one of the + * following negative error codes: + * + * :macro:`NGTCP2_ERR_NOBUF` + * Buffer is too small. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_transport_params_encode_versioned( + uint8_t *dest, size_t destlen, int transport_params_version, + const ngtcp2_transport_params *params); + +/** + * @function + * + * `ngtcp2_transport_params_decode` decodes transport parameters in + * |data| of length |datalen|, and stores the result in the object + * pointed by |params|. + * + * If an optional parameter is missing, the default value is assigned. + * + * The following fields may point to somewhere inside the buffer + * pointed by |data| of length |datalen|: + * + * - :member:`ngtcp2_transport_params.version_info.available_versions + * <ngtcp2_version_info.available_versions>` + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM` + * The input is malformed. + */ +NGTCP2_EXTERN int +ngtcp2_transport_params_decode_versioned(int transport_params_version, + ngtcp2_transport_params *params, + const uint8_t *data, size_t datalen); + +/** + * @function + * + * `ngtcp2_transport_params_decode_new` decodes transport parameters + * in |data| of length |datalen|, and stores the result in the object + * allocated dynamically. The pointer to the allocated object is + * assigned to |*pparams|. Unlike `ngtcp2_transport_params_decode`, + * all direct and indirect fields are also allocated dynamically if + * needed. + * + * |mem| is a memory allocator to allocate memory. If |mem| is + * ``NULL``, the memory allocator returned by `ngtcp2_mem_default()` + * is used. + * + * If the optional parameters are missing, the default value is + * assigned. + * + * `ngtcp2_transport_params_del` frees the memory allocated by this + * function. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM` + * The input is malformed. + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + */ +NGTCP2_EXTERN int +ngtcp2_transport_params_decode_new(ngtcp2_transport_params **pparams, + const uint8_t *data, size_t datalen, + const ngtcp2_mem *mem); + +/** + * @function + * + * `ngtcp2_transport_params_del` frees the |params| which must be + * dynamically allocated by `ngtcp2_transport_params_decode_new`. + * + * |mem| is a memory allocator that allocated |params|. If |mem| is + * ``NULL``, the memory allocator returned by `ngtcp2_mem_default()` + * is used. + * + * If |params| is ``NULL``, this function does nothing. + */ +NGTCP2_EXTERN void ngtcp2_transport_params_del(ngtcp2_transport_params *params, + const ngtcp2_mem *mem); + +/** + * @struct + * + * :type:`ngtcp2_version_cid` is a convenient struct to store the + * result of `ngtcp2_pkt_decode_version_cid`. + */ +typedef struct ngtcp2_version_cid { + /** + * :member:`version` stores QUIC version. + */ + uint32_t version; + /** + * :member:`dcid` points to the Destination Connection ID. + */ + const uint8_t *dcid; + /** + * :member:`dcidlen` is the length of the Destination Connection ID + * pointed by :member:`dcid`. + */ + size_t dcidlen; + /** + * :member:`scid` points to the Source Connection ID. + */ + const uint8_t *scid; + /** + * :member:`scidlen` is the length of the Source Connection ID + * pointed by :member:`scid`. + */ + size_t scidlen; +} ngtcp2_version_cid; + +/** + * @function + * + * `ngtcp2_pkt_decode_version_cid` extracts QUIC version, Destination + * Connection ID and Source Connection ID from the packet pointed by + * |data| of length |datalen|. This function can handle Connection ID + * up to 255 bytes unlike `ngtcp2_pkt_decode_hd_long` or + * `ngtcp2_pkt_decode_hd_short` which are only capable of handling + * Connection ID less than or equal to :macro:`NGTCP2_MAX_CIDLEN`. + * Longer Connection ID is only valid if the version is unsupported + * QUIC version. + * + * If the given packet is Long header packet, this function extracts + * the version from the packet, and assigns it to + * :member:`dest->version <ngtcp2_version_cid.version>`. It also + * extracts the pointer to the Destination Connection ID and its + * length, and assigns them to :member:`dest->dcid + * <ngtcp2_version_cid.dcid>` and :member:`dest->dcidlen + * <ngtcp2_version_cid.dcidlen>` respectively. Similarly, it extracts + * the pointer to the Source Connection ID and its length, and assigns + * them to :member:`dest->scid <ngtcp2_version_cid.scid>` and + * :member:`dest->scidlen <ngtcp2_version_cid.scidlen>` respectively. + * |short_dcidlen| is ignored. + * + * If the given packet is Short header packet, :member:`dest->version + * <ngtcp2_version_cid.version>` will be 0, :member:`dest->scid + * <ngtcp2_version_cid.scid>` will be ``NULL``, and + * :member:`dest->scidlen <ngtcp2_version_cid.scidlen>` will be 0. + * Because the Short header packet does not have the length of + * Destination Connection ID, the caller has to pass the length in + * |short_dcidlen|. This function extracts the pointer to the + * Destination Connection ID, and assigns it to :member:`dest->dcid + * <ngtcp2_version_cid.dcid>`. |short_dcidlen| is assigned to + * :member:`dest->dcidlen <ngtcp2_version_cid.dcidlen>`. + * + * If Version Negotiation is required, this function returns + * :macro:`NGTCP2_ERR_VERSION_NEGOTIATION`. Unlike the other error + * cases, all fields of |dest| are assigned as described above. + * + * This function returns 0 if it succeeds. Otherwise, one of the + * following negative error code: + * + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` + * The function could not decode the packet header. + * :macro:`NGTCP2_ERR_VERSION_NEGOTIATION` + * Version Negotiation packet should be sent. + */ +NGTCP2_EXTERN int ngtcp2_pkt_decode_version_cid(ngtcp2_version_cid *dest, + const uint8_t *data, + size_t datalen, + size_t short_dcidlen); + +/** + * @function + * + * `ngtcp2_pkt_decode_hd_long` decodes QUIC long packet header in + * |pkt| of length |pktlen|. This function only parses the input just + * before packet number field. + * + * This function does not verify that length field is correct. In + * other words, this function succeeds even if length > |pktlen|. + * + * This function can handle Connection ID up to + * :macro:`NGTCP2_MAX_CIDLEN`. Consider to use + * `ngtcp2_pkt_decode_version_cid` to get longer Connection ID. + * + * This function handles Version Negotiation specially. If version + * field is 0, |pkt| must contain Version Negotiation packet. Version + * Negotiation packet has random type in wire format. For + * convenience, this function sets + * :enum:`ngtcp2_pkt_type.NGTCP2_PKT_VERSION_NEGOTIATION` to + * :member:`dest->type <ngtcp2_pkt_hd.type>`, clears + * :macro:`NGTCP2_PKT_FLAG_LONG_FORM` flag from :member:`dest->flags + * <ngtcp2_pkt_hd.flags>`, and sets 0 to :member:`dest->len + * <ngtcp2_pkt_hd.len>`. Version Negotiation packet occupies a single + * packet. + * + * It stores the result in the object pointed by |dest|, and returns + * the number of bytes decoded to read the packet header if it + * succeeds, or one of the following error codes: + * + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` + * Packet is too short; or it is not a long header + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_pkt_decode_hd_long(ngtcp2_pkt_hd *dest, + const uint8_t *pkt, + size_t pktlen); + +/** + * @function + * + * `ngtcp2_pkt_decode_hd_short` decodes QUIC short header in |pkt| of + * length |pktlen|. Short header packet does not encode the length of + * Connection ID, thus we need the input from the outside. |dcidlen| + * is the length of Destination Connection ID in packet header. This + * function only parses the input just before packet number field. + * This function can handle Connection ID up to + * :macro:`NGTCP2_MAX_CIDLEN`. Consider to use + * `ngtcp2_pkt_decode_version_cid` to get longer Connection ID. It + * stores the result in the object pointed by |dest|, and returns the + * number of bytes decoded to read the packet header if it succeeds, + * or one of the following error codes: + * + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` + * Packet is too short; or it is not a short header + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_pkt_decode_hd_short(ngtcp2_pkt_hd *dest, + const uint8_t *pkt, + size_t pktlen, + size_t dcidlen); + +/** + * @function + * + * `ngtcp2_pkt_write_stateless_reset` writes Stateless Reset packet in + * the buffer pointed by |dest| whose length is |destlen|. + * |stateless_reset_token| is a pointer to the Stateless Reset Token, + * and its length must be :macro:`NGTCP2_STATELESS_RESET_TOKENLEN` + * bytes long. |rand| specifies the random octets preceding Stateless + * Reset Token. The length of |rand| is specified by |randlen| which + * must be at least :macro:`NGTCP2_MIN_STATELESS_RESET_RANDLEN` bytes + * long. + * + * If |randlen| is too long to write them all in the buffer, |rand| is + * written to the buffer as much as possible, and is truncated. + * + * This function returns the number of bytes written to the buffer, or + * one of the following negative error codes: + * + * :macro:`NGTCP2_ERR_NOBUF` + * Buffer is too small. + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` + * |randlen| is strictly less than + * :macro:`NGTCP2_MIN_STATELESS_RESET_RANDLEN`. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_pkt_write_stateless_reset( + uint8_t *dest, size_t destlen, const uint8_t *stateless_reset_token, + const uint8_t *rand, size_t randlen); + +/** + * @function + * + * `ngtcp2_pkt_write_version_negotiation` writes Version Negotiation + * packet in the buffer pointed by |dest| whose length is |destlen|. + * |unused_random| should be generated randomly. |dcid| is a + * Connection ID which appeared in a packet as a Source Connection ID + * sent by client which caused version negotiation. Similarly, |scid| + * is a Connection ID which appeared in a packet as a Destination + * Connection ID sent by client. |sv| is a list of supported + * versions, and |nsv| specifies the number of supported versions + * included in |sv|. + * + * This function returns the number of bytes written to the buffer, or + * one of the following negative error codes: + * + * :macro:`NGTCP2_ERR_NOBUF` + * Buffer is too small. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_pkt_write_version_negotiation( + uint8_t *dest, size_t destlen, uint8_t unused_random, const uint8_t *dcid, + size_t dcidlen, const uint8_t *scid, size_t scidlen, const uint32_t *sv, + size_t nsv); + +/** + * @struct + * + * :type:`ngtcp2_conn` represents a single QUIC connection. + */ +typedef struct ngtcp2_conn ngtcp2_conn; + +/** + * @functypedef + * + * :type:`ngtcp2_client_initial` is invoked when client application + * asks TLS stack to produce first TLS cryptographic handshake data. + * + * This implementation of this callback must get the first handshake + * data from TLS stack, and pass it to ngtcp2 library using + * `ngtcp2_conn_submit_crypto_data` function. Make sure that before + * calling `ngtcp2_conn_submit_crypto_data` function, client + * application must create initial packet protection keys and IVs, and + * provide them to ngtcp2 library using + * `ngtcp2_conn_install_initial_key`. + * + * This callback function must return 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` which makes the library call + * return immediately. + */ +typedef int (*ngtcp2_client_initial)(ngtcp2_conn *conn, void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_recv_client_initial` is invoked when server receives + * Initial packet from client. An server application must implement + * this callback, and generate initial keys and IVs for both + * transmission and reception. Install them using + * `ngtcp2_conn_install_initial_key`. |dcid| is the Destination + * Connection ID in Initial packet received from client. It is used + * to derive initial packet protection keys. + * + * The callback function must return 0 if it succeeds. If an error + * occurs, return :macro:`NGTCP2_ERR_CALLBACK_FAILURE` which makes the + * library call return immediately. + */ +typedef int (*ngtcp2_recv_client_initial)(ngtcp2_conn *conn, + const ngtcp2_cid *dcid, + void *user_data); + +/** + * @enum + * + * :type:`ngtcp2_encryption_level` is QUIC encryption level. + */ +typedef enum ngtcp2_encryption_level { + /** + * :enum:`NGTCP2_ENCRYPTION_LEVEL_INITIAL` is Initial encryption + * level. + */ + NGTCP2_ENCRYPTION_LEVEL_INITIAL, + /** + * :enum:`NGTCP2_ENCRYPTION_LEVEL_HANDSHAKE` is Handshake encryption + * level. + */ + NGTCP2_ENCRYPTION_LEVEL_HANDSHAKE, + /** + * :enum:`NGTCP2_ENCRYPTION_LEVEL_1RTT` is 1-RTT encryption level. + */ + NGTCP2_ENCRYPTION_LEVEL_1RTT, + /** + * :enum:`NGTCP2_ENCRYPTION_LEVEL_0RTT` is 0-RTT encryption level. + */ + NGTCP2_ENCRYPTION_LEVEL_0RTT +} ngtcp2_encryption_level; + +/** + * @functypedef + * + * :type`ngtcp2_recv_crypto_data` is invoked when crypto data is + * received. The received data is pointed by |data|, and its length + * is |datalen|. The |offset| specifies the offset where |data| is + * positioned. |user_data| is the arbitrary pointer passed to + * `ngtcp2_conn_client_new` or `ngtcp2_conn_server_new`. The ngtcp2 + * library ensures that the crypto data is passed to the application + * in the increasing order of |offset|. |datalen| is always strictly + * greater than 0. |encryption_level| indicates the encryption level + * where this data is received. Crypto data can never be received in + * :enum:`ngtcp2_encryption_level.NGTCP2_ENCRYPTION_LEVEL_0RTT`. + * + * The application should provide the given data to TLS stack. + * + * The callback function must return 0 if it succeeds, or one of the + * following negative error codes: + * + * - :macro:`NGTCP2_ERR_CRYPTO` + * - :macro:`NGTCP2_ERR_REQUIRED_TRANSPORT_PARAM` + * - :macro:`NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM` + * - :macro:`NGTCP2_ERR_TRANSPORT_PARAM` + * - :macro:`NGTCP2_ERR_PROTO` + * - :macro:`NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE` + * - :macro:`NGTCP2_ERR_NOMEM` + * - :macro:`NGTCP2_ERR_CALLBACK_FAILURE` + * + * If the other value is returned, it is treated as + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE`. + * + * If application encounters fatal error, return + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` which makes the library call + * return immediately. + */ +typedef int (*ngtcp2_recv_crypto_data)(ngtcp2_conn *conn, + ngtcp2_encryption_level encryption_level, + uint64_t offset, const uint8_t *data, + size_t datalen, void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_handshake_completed` is invoked when QUIC + * cryptographic handshake has completed. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_handshake_completed)(ngtcp2_conn *conn, void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_handshake_confirmed` is invoked when QUIC + * cryptographic handshake is confirmed. The handshake confirmation + * means that both endpoints agree that handshake has finished. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_handshake_confirmed)(ngtcp2_conn *conn, void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_recv_version_negotiation` is invoked when Version + * Negotiation packet is received. |hd| is the pointer to the QUIC + * packet header object. The vector |sv| of |nsv| elements contains + * the QUIC version the server supports. Since Version Negotiation is + * only sent by server, this callback function is used by client only. + * + * The callback function must return 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` which makes the library call + * return immediately. + */ +typedef int (*ngtcp2_recv_version_negotiation)(ngtcp2_conn *conn, + const ngtcp2_pkt_hd *hd, + const uint32_t *sv, size_t nsv, + void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_recv_retry` is invoked when Retry packet is received. + * This callback is client use only. + * + * Application must regenerate packet protection key, IV, and header + * protection key for Initial packets using the Destination Connection + * ID obtained by :member:`hd->scid <ngtcp2_pkt_hd.scid>`, and install + * them by calling `ngtcp2_conn_install_initial_key`. + * + * 0-RTT data accepted by the ngtcp2 library will be automatically + * retransmitted as 0-RTT data by the library. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_recv_retry)(ngtcp2_conn *conn, const ngtcp2_pkt_hd *hd, + void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_encrypt` is invoked when the ngtcp2 library asks the + * application to encrypt packet payload. The packet payload to + * encrypt is passed as |plaintext| of length |plaintextlen|. The + * AEAD cipher is |aead|. |aead_ctx| is the AEAD cipher context + * object which is initialized with the specific encryption key. The + * nonce is passed as |nonce| of length |noncelen|. The Additional + * Authenticated Data is passed as |aad| of length |aadlen|. + * + * The implementation of this callback must encrypt |plaintext| using + * the negotiated cipher suite, and write the ciphertext into the + * buffer pointed by |dest|. |dest| has enough capacity to store the + * ciphertext and any additional AEAD tag data. + * + * |dest| and |plaintext| may point to the same buffer. + * + * The callback function must return 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` which makes the library call + * return immediately. + */ +typedef int (*ngtcp2_encrypt)(uint8_t *dest, const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *plaintext, size_t plaintextlen, + const uint8_t *nonce, size_t noncelen, + const uint8_t *aad, size_t aadlen); + +/** + * @functypedef + * + * :type:`ngtcp2_decrypt` is invoked when the ngtcp2 library asks the + * application to decrypt packet payload. The packet payload to + * decrypt is passed as |ciphertext| of length |ciphertextlen|. The + * AEAD cipher is |aead|. |aead_ctx| is the AEAD cipher context + * object which is initialized with the specific decryption key. The + * nonce is passed as |nonce| of length |noncelen|. The Additional + * Authenticated Data is passed as |aad| of length |aadlen|. + * + * The implementation of this callback must decrypt |ciphertext| using + * the negotiated cipher suite, and write the ciphertext into the + * buffer pointed by |dest|. |dest| has enough capacity to store the + * cleartext. + * + * |dest| and |ciphertext| may point to the same buffer. + * + * The callback function must return 0 if it succeeds. If TLS stack + * fails to decrypt data, return :macro:`NGTCP2_ERR_DECRYPT`. For any + * other errors, return :macro:`NGTCP2_ERR_CALLBACK_FAILURE` which + * makes the library call return immediately. + */ +typedef int (*ngtcp2_decrypt)(uint8_t *dest, const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *ciphertext, size_t ciphertextlen, + const uint8_t *nonce, size_t noncelen, + const uint8_t *aad, size_t aadlen); + +/** + * @functypedef + * + * :type:`ngtcp2_hp_mask` is invoked when the ngtcp2 library asks the + * application to produce a mask to encrypt or decrypt packet header. + * The encryption cipher is |hp|. |hp_ctx| is the cipher context + * object which is initialized with the specific header protection + * key. The sample is passed as |sample| which is + * :macro:`NGTCP2_HP_SAMPLELEN` bytes long. + * + * The implementation of this callback must produce a mask using the + * header protection cipher suite specified by QUIC specification, and + * write the result into the buffer pointed by |dest|. The length of + * the mask must be at least :macro:`NGTCP2_HP_MASKLEN`. The library + * only uses the first :macro:`NGTCP2_HP_MASKLEN` bytes of the + * produced mask. The buffer pointed by |dest| is guaranteed to have + * at least :macro:`NGTCP2_HP_SAMPLELEN` bytes available for + * convenience. + * + * The callback function must return 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` which makes the library call + * return immediately. + */ +typedef int (*ngtcp2_hp_mask)(uint8_t *dest, const ngtcp2_crypto_cipher *hp, + const ngtcp2_crypto_cipher_ctx *hp_ctx, + const uint8_t *sample); + +/** + * @macrosection + * + * STREAM frame data flags + */ + +/** + * @macro + * + * :macro:`NGTCP2_STREAM_DATA_FLAG_NONE` indicates no flag set. + */ +#define NGTCP2_STREAM_DATA_FLAG_NONE 0x00u + +/** + * @macro + * + * :macro:`NGTCP2_STREAM_DATA_FLAG_FIN` indicates that this chunk of + * data is final piece of an incoming stream. + */ +#define NGTCP2_STREAM_DATA_FLAG_FIN 0x01u + +/** + * @macro + * + * :macro:`NGTCP2_STREAM_DATA_FLAG_0RTT` indicates that this chunk of + * data contains data received in 0-RTT packet, and the handshake has + * not completed yet, which means that the data might be replayed. + */ +#define NGTCP2_STREAM_DATA_FLAG_0RTT 0x02u + +/** + * @functypedef + * + * :type:`ngtcp2_recv_stream_data` is invoked when stream data is + * received. The stream is specified by |stream_id|. |flags| is the + * bitwise-OR of zero or more of :macro:`NGTCP2_STREAM_DATA_FLAG_* + * <NGTCP2_STREAM_DATA_FLAG_NONE>`. If |flags| & + * :macro:`NGTCP2_STREAM_DATA_FLAG_FIN` is nonzero, this portion of + * the data is the last data in this stream. |offset| is the offset + * where this data begins. The library ensures that data is passed to + * the application in the non-decreasing order of |offset| without any + * overlap. The data is passed as |data| of length |datalen|. + * |datalen| may be 0 if and only if |fin| is nonzero. + * + * If :macro:`NGTCP2_STREAM_DATA_FLAG_0RTT` is set in |flags|, it + * indicates that a part of or whole data was received in 0-RTT + * packet, and a handshake has not completed yet. + * + * The callback function must return 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` which makes the library return + * immediately. + */ +typedef int (*ngtcp2_recv_stream_data)(ngtcp2_conn *conn, uint32_t flags, + int64_t stream_id, uint64_t offset, + const uint8_t *data, size_t datalen, + void *user_data, void *stream_user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_stream_open` is a callback function which is called + * when remote stream is opened by a remote endpoint. This function + * is not called if stream is opened by implicitly (we might + * reconsider this behaviour later). + * + * The implementation of this callback should return 0 if it succeeds. + * Returning :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library + * call return immediately. + */ +typedef int (*ngtcp2_stream_open)(ngtcp2_conn *conn, int64_t stream_id, + void *user_data); + +/** + * @macrosection + * + * Stream close flags + */ + +/** + * @macro + * + * :macro:`NGTCP2_STREAM_CLOSE_FLAG_NONE` indicates no flag set. + */ +#define NGTCP2_STREAM_CLOSE_FLAG_NONE 0x00u + +/** + * @macro + * + * :macro:`NGTCP2_STREAM_CLOSE_FLAG_APP_ERROR_CODE_SET` indicates that + * app_error_code parameter is set. + */ +#define NGTCP2_STREAM_CLOSE_FLAG_APP_ERROR_CODE_SET 0x01u + +/** + * @functypedef + * + * :type:`ngtcp2_stream_close` is invoked when a stream is closed. + * This callback is not called when QUIC connection is closed before + * existing streams are closed. |flags| is the bitwise-OR of zero or + * more of :macro:`NGTCP2_STREAM_CLOSE_FLAG_* + * <NGTCP2_STREAM_CLOSE_FLAG_NONE>`. |app_error_code| indicates the + * error code of this closure if + * :macro:`NGTCP2_STREAM_CLOSE_FLAG_APP_ERROR_CODE_SET` is set in + * |flags|. If it is not set, the stream was closed without any error + * code, which generally means success. + * + * |app_error_code| is the first application error code sent by a + * local endpoint, or received from a remote endpoint. If a stream is + * closed cleanly, no application error code is exchanged. Since QUIC + * stack does not know the application error code which indicates "no + * errors", |app_error_code| is set to 0 and + * :macro:`NGTCP2_STREAM_CLOSE_FLAG_APP_ERROR_CODE_SET` is not set in + * |flags| in this case. + * + * The implementation of this callback should return 0 if it succeeds. + * Returning :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library + * call return immediately. + */ +typedef int (*ngtcp2_stream_close)(ngtcp2_conn *conn, uint32_t flags, + int64_t stream_id, uint64_t app_error_code, + void *user_data, void *stream_user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_stream_reset` is invoked when a stream identified by + * |stream_id| is reset by a remote endpoint. + * + * The implementation of this callback should return 0 if it succeeds. + * Returning :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library + * call return immediately. + */ +typedef int (*ngtcp2_stream_reset)(ngtcp2_conn *conn, int64_t stream_id, + uint64_t final_size, uint64_t app_error_code, + void *user_data, void *stream_user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_acked_stream_data_offset` is a callback function + * which is called when stream data in range [|offset|, |offset| + + * |datalen|) is acknowledged, and application can free the portion of + * data. For a given |stream_id|, this callback is called + * sequentially in increasing order of |offset| without any overlap. + * |datalen| is normally strictly greater than 0. One exception is + * that when a STREAM frame has fin flag set and 0 length data, this + * callback is invoked with |datalen| == 0. + * + * If a stream is closed prematurely, and stream data is still + * in-flight, this callback function is not called for those data. + * After :member:`ngtcp2_callbacks.stream_close` is called for a + * particular stream, |conn| does not touch data for the closed stream + * again, and application can free all unacknowledged stream data. + * + * The implementation of this callback should return 0 if it succeeds. + * Returning :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library + * call return immediately. + */ +typedef int (*ngtcp2_acked_stream_data_offset)( + ngtcp2_conn *conn, int64_t stream_id, uint64_t offset, uint64_t datalen, + void *user_data, void *stream_user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_recv_stateless_reset` is a callback function which is + * called when Stateless Reset packet is received. The stateless + * reset details are given in |sr|. + * + * The implementation of this callback should return 0 if it succeeds. + * Returning :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library + * call return immediately. + */ +typedef int (*ngtcp2_recv_stateless_reset)(ngtcp2_conn *conn, + const ngtcp2_pkt_stateless_reset *sr, + void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_extend_max_streams` is a callback function which is + * called every time max stream ID is strictly extended. + * |max_streams| is the cumulative number of streams which an endpoint + * can open. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_extend_max_streams)(ngtcp2_conn *conn, + uint64_t max_streams, void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_extend_max_stream_data` is a callback function which + * is invoked when max stream data is extended. |stream_id| + * identifies the stream. |max_data| is a cumulative number of bytes + * an endpoint can send on this stream. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_extend_max_stream_data)(ngtcp2_conn *conn, + int64_t stream_id, + uint64_t max_data, void *user_data, + void *stream_user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_rand` is a callback function to get random data of + * length |destlen|. Application must fill random |destlen| bytes to + * the buffer pointed by |dest|. The generated data is used only in + * non-cryptographic context. + */ +typedef void (*ngtcp2_rand)(uint8_t *dest, size_t destlen, + const ngtcp2_rand_ctx *rand_ctx); + +/** + * @functypedef + * + * :type:`ngtcp2_get_new_connection_id` is a callback function to ask + * an application for new connection ID. Application must generate + * new unused connection ID with the exact |cidlen| bytes, and store + * it in |cid|. It also has to generate a stateless reset token, and + * store it in |token|. The length of stateless reset token is + * :macro:`NGTCP2_STATELESS_RESET_TOKENLEN` and it is guaranteed that + * the buffer pointed by |token| has the sufficient space to store the + * token. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_get_new_connection_id)(ngtcp2_conn *conn, ngtcp2_cid *cid, + uint8_t *token, size_t cidlen, + void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_remove_connection_id` is a callback function which + * notifies the application that connection ID |cid| is no longer used + * by a remote endpoint. This Connection ID was previously offered by + * a local endpoint, and a remote endpoint could use it as Destination + * Connection ID when sending QUIC packet. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_remove_connection_id)(ngtcp2_conn *conn, + const ngtcp2_cid *cid, + void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_update_key` is a callback function which tells the + * application that it must generate new packet protection keying + * materials and AEAD cipher context objects with new keys. The + * current set of secrets are given as |current_rx_secret| and + * |current_tx_secret| of length |secretlen|. They are decryption and + * encryption secrets respectively. + * + * The application must generate new secrets and keys for both + * encryption and decryption. It must write decryption secret and IV + * to the buffer pointed by |rx_secret| and |rx_iv| respectively. It + * also must create new AEAD cipher context object with new decryption + * key and initialize |rx_aead_ctx| with it. Similarly, write + * encryption secret and IV to the buffer pointed by |tx_secret| and + * |tx_iv|. Create new AEAD cipher context object with new encryption + * key and initialize |tx_aead_ctx| with it. All given buffers have + * the enough capacity to store secret, key and IV. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_update_key)( + ngtcp2_conn *conn, uint8_t *rx_secret, uint8_t *tx_secret, + ngtcp2_crypto_aead_ctx *rx_aead_ctx, uint8_t *rx_iv, + ngtcp2_crypto_aead_ctx *tx_aead_ctx, uint8_t *tx_iv, + const uint8_t *current_rx_secret, const uint8_t *current_tx_secret, + size_t secretlen, void *user_data); + +/** + * @macrosection + * + * Path validation related macros + */ + +/** + * @macro + * + * :macro:`NGTCP2_PATH_VALIDATION_FLAG_NONE` indicates no flag set. + */ +#define NGTCP2_PATH_VALIDATION_FLAG_NONE 0x00u + +/** + * @macro + * + * :macro:`NGTCP2_PATH_VALIDATION_FLAG_PREFERRED_ADDR` indicates the + * validation involving server preferred address. This flag is only + * set for client. + */ +#define NGTCP2_PATH_VALIDATION_FLAG_PREFERRED_ADDR 0x01u + +/** + * @macro + * + * :macro:`NGTCP2_PATH_VALIDATION_FLAG_NEW_TOKEN` indicates that + * server should send NEW_TOKEN frame for the new remote address. + * This flag is only set for server. + */ +#define NGTCP2_PATH_VALIDATION_FLAG_NEW_TOKEN 0x02u + +/** + * @functypedef + * + * :type:`ngtcp2_path_validation` is a callback function which tells + * an application the outcome of path validation. |flags| is zero or + * more of :macro:`NGTCP2_PATH_VALIDATION_FLAG_* + * <NGTCP2_PATH_VALIDATION_FLAG_NONE>`. |path| is the path that was + * validated. |old_path| is the path that is previously used before a + * local endpoint has migrated to |path| if |old_path| is not NULL. + * If |res| is + * :enum:`ngtcp2_path_validation_result.NGTCP2_PATH_VALIDATION_RESULT_SUCCESS`, + * the path validation succeeded. If |res| is + * :enum:`ngtcp2_path_validation_result.NGTCP2_PATH_VALIDATION_RESULT_FAILURE`, + * the path validation failed. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_path_validation)(ngtcp2_conn *conn, uint32_t flags, + const ngtcp2_path *path, + const ngtcp2_path *old_path, + ngtcp2_path_validation_result res, + void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_select_preferred_addr` is a callback function which + * asks a client application to choose server address from preferred + * addresses |paddr| received from server. An application should + * write a network path for a selected preferred address in |dest|. + * More specifically, the selected preferred address must be set to + * :member:`dest->remote <ngtcp2_path.remote>`, a client source + * address must be set to :member:`dest->local <ngtcp2_path.local>`. + * If a client source address does not change for the new server + * address, leave :member:`dest->local <ngtcp2_path.local>` + * unmodified, or copy the value of :member:`local + * <ngtcp2_path.local>` field of the current network path obtained + * from `ngtcp2_conn_get_path()`. Both :member:`dest->local.addr + * <ngtcp2_addr.addr>` and :member:`dest->remote.addr + * <ngtcp2_addr.addr>` point to buffers which are at least + * sizeof(:type:`ngtcp2_sockaddr_union`) bytes long, respectively. If + * an application denies the preferred addresses, just leave |dest| + * unmodified (or set :member:`dest->remote.addrlen + * <ngtcp2_addr.addrlen>` to 0), and return 0. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_select_preferred_addr)(ngtcp2_conn *conn, + ngtcp2_path *dest, + const ngtcp2_preferred_addr *paddr, + void *user_data); + +/** + * @enum + * + * :type:`ngtcp2_connection_id_status_type` defines a set of status + * for Destination Connection ID. + */ +typedef enum ngtcp2_connection_id_status_type { + /** + * :enum:`NGTCP2_CONNECTION_ID_STATUS_TYPE_ACTIVATE` indicates that + * a local endpoint starts using new Destination Connection ID. + */ + NGTCP2_CONNECTION_ID_STATUS_TYPE_ACTIVATE, + /** + * :enum:`NGTCP2_CONNECTION_ID_STATUS_TYPE_DEACTIVATE` indicates + * that a local endpoint stops using a given Destination Connection + * ID. + */ + NGTCP2_CONNECTION_ID_STATUS_TYPE_DEACTIVATE +} ngtcp2_connection_id_status_type; + +/** + * @functypedef + * + * :type:`ngtcp2_connection_id_status` is a callback function which is + * called when the status of Destination Connection ID changes. + * + * |token| is the associated stateless reset token, and it is ``NULL`` + * if no token is present. + * + * |type| is the one of the value defined in + * :type:`ngtcp2_connection_id_status_type`. The new value might be + * added in the future release. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_connection_id_status)( + ngtcp2_conn *conn, ngtcp2_connection_id_status_type type, uint64_t seq, + const ngtcp2_cid *cid, const uint8_t *token, void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_recv_new_token` is a callback function which is + * called when new token is received from server. This callback is + * client use only. + * + * |token| is the received token of length |tokenlen| bytes long. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_recv_new_token)(ngtcp2_conn *conn, const uint8_t *token, + size_t tokenlen, void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_delete_crypto_aead_ctx` is a callback function which + * must delete the native object pointed by + * :member:`aead_ctx->native_handle + * <ngtcp2_crypto_aead_ctx.native_handle>`. + */ +typedef void (*ngtcp2_delete_crypto_aead_ctx)(ngtcp2_conn *conn, + ngtcp2_crypto_aead_ctx *aead_ctx, + void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_delete_crypto_cipher_ctx` is a callback function + * which must delete the native object pointed by + * :member:`cipher_ctx->native_handle + * <ngtcp2_crypto_cipher_ctx.native_handle>`. + */ +typedef void (*ngtcp2_delete_crypto_cipher_ctx)( + ngtcp2_conn *conn, ngtcp2_crypto_cipher_ctx *cipher_ctx, void *user_data); + +/** + * @macrosection + * + * DATAGRAM frame flags + */ + +/** + * @macro + * + * :macro:`NGTCP2_DATAGRAM_FLAG_NONE` indicates no flag set. + */ +#define NGTCP2_DATAGRAM_FLAG_NONE 0x00u + +/** + * @macro + * + * :macro:`NGTCP2_DATAGRAM_FLAG_0RTT` indicates that DATAGRAM frame is + * received in 0-RTT packet, and the handshake has not completed yet, + * which means that the data might be replayed. + */ +#define NGTCP2_DATAGRAM_FLAG_0RTT 0x01u + +/** + * @functypedef + * + * :type:`ngtcp2_recv_datagram` is invoked when DATAGRAM frame is + * received. |flags| is bitwise-OR of zero or more of + * :macro:`NGTCP2_DATAGRAM_FLAG_* <NGTCP2_DATAGRAM_FLAG_NONE>`. + * + * If :macro:`NGTCP2_DATAGRAM_FLAG_0RTT` is set in |flags|, it + * indicates that DATAGRAM frame was received in 0-RTT packet, and a + * handshake has not completed yet. + * + * The callback function must return 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` which makes the library return + * immediately. + */ +typedef int (*ngtcp2_recv_datagram)(ngtcp2_conn *conn, uint32_t flags, + const uint8_t *data, size_t datalen, + void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_ack_datagram` is invoked when a packet which contains + * DATAGRAM frame which is identified by |dgram_id| is acknowledged. + * |dgram_id| is the valued passed to `ngtcp2_conn_writev_datagram`. + * + * The callback function must return 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` which makes the library return + * immediately. + */ +typedef int (*ngtcp2_ack_datagram)(ngtcp2_conn *conn, uint64_t dgram_id, + void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_lost_datagram` is invoked when a packet which + * contains DATAGRAM frame which is identified by |dgram_id| is + * declared lost. |dgram_id| is the valued passed to + * `ngtcp2_conn_writev_datagram`. Note that the loss might be + * spurious, and DATAGRAM frame might be acknowledged later. + * + * The callback function must return 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` which makes the library return + * immediately. + */ +typedef int (*ngtcp2_lost_datagram)(ngtcp2_conn *conn, uint64_t dgram_id, + void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_get_path_challenge_data` is a callback function to + * ask an application for new data that is sent in PATH_CHALLENGE + * frame. Application must generate new unpredictable, exactly + * :macro:`NGTCP2_PATH_CHALLENGE_DATALEN` bytes of random data, and + * store them into the buffer pointed by |data|. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_get_path_challenge_data)(ngtcp2_conn *conn, uint8_t *data, + void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_stream_stop_sending` is invoked when a stream is no + * longer read by a local endpoint before it receives all stream data. + * This function is called at most once per stream. |app_error_code| + * is the error code passed to `ngtcp2_conn_shutdown_stream_read` or + * `ngtcp2_conn_shutdown_stream`. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_stream_stop_sending)(ngtcp2_conn *conn, int64_t stream_id, + uint64_t app_error_code, + void *user_data, + void *stream_user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_version_negotiation` is invoked when the compatible + * version negotiation takes place. For client, it is called when it + * sees a change in version field of a long header packet. This + * callback function might be called multiple times for client. For + * server, it is called once when the version is negotiated. + * + * The implementation of this callback must install new Initial keys + * for |version| and Destination Connection ID |client_dcid| from + * client. Use `ngtcp2_conn_install_vneg_initial_key` to install + * keys. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_version_negotiation)(ngtcp2_conn *conn, uint32_t version, + const ngtcp2_cid *client_dcid, + void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_recv_key` is invoked when new key is installed to + * |conn| during QUIC cryptographic handshake. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_recv_key)(ngtcp2_conn *conn, ngtcp2_encryption_level level, + void *user_data); + +/** + * @functypedef + * + * :type:`ngtcp2_tls_early_data_rejected` is invoked when early data + * was rejected by server during TLS handshake, or client decided not + * to attempt early data. + * + * The callback function must return 0 if it succeeds. Returning + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` makes the library call return + * immediately. + */ +typedef int (*ngtcp2_tls_early_data_rejected)(ngtcp2_conn *conn, + void *user_data); + +#define NGTCP2_CALLBACKS_V1 1 +#define NGTCP2_CALLBACKS_VERSION NGTCP2_CALLBACKS_V1 + +/** + * @struct + * + * :type:`ngtcp2_callbacks` holds a set of callback functions. + */ +typedef struct ngtcp2_callbacks { + /** + * :member:`client_initial` is a callback function which is invoked + * when client asks TLS stack to produce first TLS cryptographic + * handshake message. This callback function must be specified for + * a client application. + */ + ngtcp2_client_initial client_initial; + /** + * :member:`recv_client_initial` is a callback function which is + * invoked when a server receives the first Initial packet from + * client. This callback function must be specified for a server + * application. + */ + ngtcp2_recv_client_initial recv_client_initial; + /** + * :member:`recv_crypto_data` is a callback function which is + * invoked when cryptographic data (CRYPTO frame, in other words, + * TLS message) is received. This callback function must be + * specified. + */ + ngtcp2_recv_crypto_data recv_crypto_data; + /** + * :member:`handshake_completed` is a callback function which is + * invoked when QUIC cryptographic handshake has completed. This + * callback function is optional. + */ + ngtcp2_handshake_completed handshake_completed; + /** + * :member:`recv_version_negotiation` is a callback function which + * is invoked when Version Negotiation packet is received by a + * client. This callback function is optional. + */ + ngtcp2_recv_version_negotiation recv_version_negotiation; + /** + * :member:`encrypt` is a callback function which is invoked to + * encrypt a QUIC packet. This callback function must be specified. + */ + ngtcp2_encrypt encrypt; + /** + * :member:`decrypt` is a callback function which is invoked to + * decrypt a QUIC packet. This callback function must be specified. + */ + ngtcp2_decrypt decrypt; + /** + * :member:`hp_mask` is a callback function which is invoked to get + * a mask to encrypt or decrypt QUIC packet header. This callback + * function must be specified. + */ + ngtcp2_hp_mask hp_mask; + /** + * :member:`recv_stream_data` is a callback function which is + * invoked when stream data, which includes application data, is + * received. This callback function is optional. + */ + ngtcp2_recv_stream_data recv_stream_data; + /** + * :member:`acked_stream_data_offset` is a callback function which + * is invoked when stream data, which includes application data, is + * acknowledged by a remote endpoint. It tells an application the + * largest offset of acknowledged stream data without a gap so that + * application can free memory for the data up to that offset. This + * callback function is optional. + */ + ngtcp2_acked_stream_data_offset acked_stream_data_offset; + /** + * :member:`stream_open` is a callback function which is invoked + * when new remote stream is opened by a remote endpoint. This + * callback function is optional. + */ + ngtcp2_stream_open stream_open; + /** + * :member:`stream_close` is a callback function which is invoked + * when a stream is closed. This callback function is optional. + */ + ngtcp2_stream_close stream_close; + /** + * :member:`recv_stateless_reset` is a callback function which is + * invoked when Stateless Reset packet is received. This callback + * function is optional. + */ + ngtcp2_recv_stateless_reset recv_stateless_reset; + /** + * :member:`recv_retry` is a callback function which is invoked when + * a client receives Retry packet. For client, this callback + * function must be specified. Server never receive Retry packet. + */ + ngtcp2_recv_retry recv_retry; + /** + * :member:`extend_max_local_streams_bidi` is a callback function + * which is invoked when the number of bidirectional stream which a + * local endpoint can open is increased. This callback function is + * optional. + */ + ngtcp2_extend_max_streams extend_max_local_streams_bidi; + /** + * :member:`extend_max_local_streams_uni` is a callback function + * which is invoked when the number of unidirectional stream which a + * local endpoint can open is increased. This callback function is + * optional. + */ + ngtcp2_extend_max_streams extend_max_local_streams_uni; + /** + * :member:`rand` is a callback function which is invoked when the + * library needs random data. This callback function must be + * specified. + */ + ngtcp2_rand rand; + /** + * :member:`get_new_connection_id` is a callback function which is + * invoked when the library needs new connection ID. This callback + * function must be specified. + */ + ngtcp2_get_new_connection_id get_new_connection_id; + /** + * :member:`remove_connection_id` is a callback function which + * notifies an application that connection ID is no longer used by a + * remote endpoint. This callback function is optional. + */ + ngtcp2_remove_connection_id remove_connection_id; + /** + * :member:`update_key` is a callback function which is invoked when + * the library tells an application that it must update keying + * materials, and install new keys. This callback function must be + * specified. + */ + ngtcp2_update_key update_key; + /** + * :member:`path_validation` is a callback function which is invoked + * when path validation completed. This callback function is + * optional. + */ + ngtcp2_path_validation path_validation; + /** + * :member:`select_preferred_addr` is a callback function which is + * invoked when the library asks a client to select preferred + * address presented by a server. If not set, client ignores + * preferred addresses. This callback function is optional. + */ + ngtcp2_select_preferred_addr select_preferred_addr; + /** + * :member:`stream_reset` is a callback function which is invoked + * when a stream is reset by a remote endpoint. This callback + * function is optional. + */ + ngtcp2_stream_reset stream_reset; + /** + * :member:`extend_max_remote_streams_bidi` is a callback function + * which is invoked when the number of bidirectional streams which a + * remote endpoint can open is increased. This callback function is + * optional. + */ + ngtcp2_extend_max_streams extend_max_remote_streams_bidi; + /** + * :member:`extend_max_remote_streams_uni` is a callback function + * which is invoked when the number of unidirectional streams which + * a remote endpoint can open is increased. This callback function + * is optional. + */ + ngtcp2_extend_max_streams extend_max_remote_streams_uni; + /** + * :member:`extend_max_stream_data` is callback function which is + * invoked when the maximum offset of stream data that a local + * endpoint can send is increased. This callback function is + * optional. + */ + ngtcp2_extend_max_stream_data extend_max_stream_data; + /** + * :member:`dcid_status` is a callback function which is invoked + * when the new Destination Connection ID is activated, or the + * activated Destination Connection ID is now deactivated. This + * callback function is optional. + */ + ngtcp2_connection_id_status dcid_status; + /** + * :member:`handshake_confirmed` is a callback function which is + * invoked when both endpoints agree that handshake has finished. + * This field is ignored by server because + * :member:`handshake_completed` also indicates the handshake + * confirmation for server. This callback function is optional. + */ + ngtcp2_handshake_confirmed handshake_confirmed; + /** + * :member:`recv_new_token` is a callback function which is invoked + * when new token is received from server. This field is ignored by + * server. This callback function is optional. + */ + ngtcp2_recv_new_token recv_new_token; + /** + * :member:`delete_crypto_aead_ctx` is a callback function which + * deletes a given AEAD cipher context object. This callback + * function must be specified. + */ + ngtcp2_delete_crypto_aead_ctx delete_crypto_aead_ctx; + /** + * :member:`delete_crypto_cipher_ctx` is a callback function which + * deletes a given cipher context object. This callback function + * must be specified. + */ + ngtcp2_delete_crypto_cipher_ctx delete_crypto_cipher_ctx; + /** + * :member:`recv_datagram` is a callback function which is invoked + * when DATAGRAM frame is received. This callback function is + * optional. + */ + ngtcp2_recv_datagram recv_datagram; + /** + * :member:`ack_datagram` is a callback function which is invoked + * when a QUIC packet containing DATAGRAM frame is acknowledged by a + * remote endpoint. This callback function is optional. + */ + ngtcp2_ack_datagram ack_datagram; + /** + * :member:`lost_datagram` is a callback function which is invoked + * when a QUIC packet containing DATAGRAM frame is declared lost. + * This callback function is optional. + */ + ngtcp2_lost_datagram lost_datagram; + /** + * :member:`get_path_challenge_data` is a callback function which is + * invoked when the library needs new data sent along with + * PATH_CHALLENGE frame. This callback must be specified. + */ + ngtcp2_get_path_challenge_data get_path_challenge_data; + /** + * :member:`stream_stop_sending` is a callback function which is + * invoked when a local endpoint no longer reads from a stream + * before it receives all stream data. This callback function is + * optional. + */ + ngtcp2_stream_stop_sending stream_stop_sending; + /** + * :member:`version_negotiation` is a callback function which is + * invoked when the compatible version negotiation takes place. + * This callback function must be specified. + */ + ngtcp2_version_negotiation version_negotiation; + /** + * :member:`recv_rx_key` is a callback function which is invoked + * when a new key for decrypting packets is installed during QUIC + * cryptographic handshake. It is not called for + * :enum:`ngtcp2_encryption_level.NGTCP2_ENCRYPTION_LEVEL_INITIAL`. + */ + ngtcp2_recv_key recv_rx_key; + /** + * :member:`recv_tx_key` is a callback function which is invoked + * when a new key for encrypting packets is installed during QUIC + * cryptographic handshake. It is not called for + * :enum:`ngtcp2_encryption_level.NGTCP2_ENCRYPTION_LEVEL_INITIAL`. + */ + ngtcp2_recv_key recv_tx_key; + /** + * :member:`tls_early_data_rejected` is a callback function which is + * invoked when server rejected early data during TLS handshake, or + * client decided not to attempt early data. This callback function + * is only used by client. + */ + ngtcp2_tls_early_data_rejected tls_early_data_rejected; +} ngtcp2_callbacks; + +/** + * @function + * + * `ngtcp2_pkt_write_connection_close` writes Initial packet + * containing CONNECTION_CLOSE frame with the given |error_code| and + * the optional |reason| of length |reasonlen| to the buffer pointed + * by |dest| of length |destlen|. All encryption parameters are for + * Initial packet encryption. The packet number is always 0. + * + * The primary use case of this function is for server to send + * CONNECTION_CLOSE frame in Initial packet to close connection + * without committing any state when validating Retry token fails. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * :macro:`NGTCP2_ERR_NOBUF` + * Buffer is too small. + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` + * Callback function failed. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_pkt_write_connection_close( + uint8_t *dest, size_t destlen, uint32_t version, const ngtcp2_cid *dcid, + const ngtcp2_cid *scid, uint64_t error_code, const uint8_t *reason, + size_t reasonlen, ngtcp2_encrypt encrypt, const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx, const uint8_t *iv, + ngtcp2_hp_mask hp_mask, const ngtcp2_crypto_cipher *hp, + const ngtcp2_crypto_cipher_ctx *hp_ctx); + +/** + * @function + * + * `ngtcp2_pkt_write_retry` writes Retry packet in the buffer pointed + * by |dest| whose length is |destlen|. |dcid| is the Connection ID + * which appeared in a packet as a Source Connection ID sent by + * client. |scid| is a server chosen Source Connection ID. |odcid| + * specifies Original Destination Connection ID which appeared in a + * packet as a Destination Connection ID sent by client. |token| + * specifies Retry Token, and |tokenlen| specifies its length. |aead| + * must be AEAD_AES_128_GCM. |aead_ctx| must be initialized with + * :macro:`NGTCP2_RETRY_KEY` as an encryption key. + * + * This function returns the number of bytes written to the buffer, or + * one of the following negative error codes: + * + * :macro:`NGTCP2_ERR_NOBUF` + * Buffer is too small. + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` + * Callback function failed. + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` + * :member:`odcid->datalen <ngtcp2_cid.datalen>` is less than + * :macro:`NGTCP2_MIN_INITIAL_DCIDLEN`. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_pkt_write_retry( + uint8_t *dest, size_t destlen, uint32_t version, const ngtcp2_cid *dcid, + const ngtcp2_cid *scid, const ngtcp2_cid *odcid, const uint8_t *token, + size_t tokenlen, ngtcp2_encrypt encrypt, const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx); + +/** + * @function + * + * `ngtcp2_accept` is used by server implementation, and decides + * whether packet |pkt| of length |pktlen| from client is acceptable + * for the very first packet to a connection. + * + * If |dest| is not ``NULL`` and the function returns 0, the decoded + * packet header is stored in the object pointed by |dest|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` + * The packet is not acceptable for the very first packet to a new + * connection; or the function failed to parse the packet header. + */ +NGTCP2_EXTERN int ngtcp2_accept(ngtcp2_pkt_hd *dest, const uint8_t *pkt, + size_t pktlen); + +/** + * @function + * + * `ngtcp2_conn_client_new` creates new :type:`ngtcp2_conn`, and + * initializes it as client. On success, it stores the pointer to the + * newly allocated object in |*pconn|. |dcid| is a randomized + * Destination Connection ID which must be longer than or equal to + * :macro:`NGTCP2_MIN_INITIAL_DCIDLEN`. |scid| is a Source Connection + * ID chosen by client. |client_chosen_version| is a QUIC version + * that a client chooses. |path| is the network path where this QUIC + * connection is being established, and must not be ``NULL``. + * |callbacks|, |settings|, and |params| must not be ``NULL``, and the + * function makes a copy of each of them. |params| is a local QUIC + * transport parameters, and sent to a remote endpoint during + * handshake. |user_data| is the arbitrary pointer which is passed to + * the user-defined callback functions. If |mem| is ``NULL``, the + * memory allocator returned by `ngtcp2_mem_default()` is used. + * + * Call `ngtcp2_conn_del` to free memory allocated for |*pconn|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + */ +NGTCP2_EXTERN int ngtcp2_conn_client_new_versioned( + ngtcp2_conn **pconn, const ngtcp2_cid *dcid, const ngtcp2_cid *scid, + const ngtcp2_path *path, uint32_t client_chosen_version, + int callbacks_version, const ngtcp2_callbacks *callbacks, + int settings_version, const ngtcp2_settings *settings, + int transport_params_version, const ngtcp2_transport_params *params, + const ngtcp2_mem *mem, void *user_data); + +/** + * @function + * + * `ngtcp2_conn_server_new` creates new :type:`ngtcp2_conn`, and + * initializes it as server. On success, it stores the pointer to the + * newly allocated object in |*pconn|. |dcid| is a Destination + * Connection ID, and is usually the Connection ID that appears in + * client Initial packet as Source Connection ID. |scid| is a Source + * Connection ID chosen by server. |path| is the network path where + * this QUIC connection is being established, and must not be + * ``NULL``. |client_chosen_version| is a QUIC version that a client + * chooses. |callbacks|, |settings|, and |params| must not be + * ``NULL``, and the function makes a copy of each of them. |params| + * is a local QUIC transport parameters, and sent to a remote endpoint + * during handshake. |user_data| is the arbitrary pointer which is + * passed to the user-defined callback functions. If |mem| is + * ``NULL``, the memory allocator returned by `ngtcp2_mem_default()` + * is used. + * + * Call `ngtcp2_conn_del` to free memory allocated for |*pconn|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + */ +NGTCP2_EXTERN int ngtcp2_conn_server_new_versioned( + ngtcp2_conn **pconn, const ngtcp2_cid *dcid, const ngtcp2_cid *scid, + const ngtcp2_path *path, uint32_t client_chosen_version, + int callbacks_version, const ngtcp2_callbacks *callbacks, + int settings_version, const ngtcp2_settings *settings, + int transport_params_version, const ngtcp2_transport_params *params, + const ngtcp2_mem *mem, void *user_data); + +/** + * @function + * + * `ngtcp2_conn_del` frees resources allocated for |conn|. It also + * frees memory pointed by |conn|. + */ +NGTCP2_EXTERN void ngtcp2_conn_del(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_read_pkt` decrypts QUIC packet given in |pkt| of + * length |pktlen| and processes it. |path| is the network path the + * packet is delivered and must not be ``NULL``. |pi| is packet + * metadata and may be ``NULL``. This function performs QUIC handshake + * as well. + * + * This function must not be called from inside the callback + * functions. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_RETRY` + * Server must perform address validation by sending Retry packet + * (see `ngtcp2_crypto_write_retry` and `ngtcp2_pkt_write_retry`), + * and discard the connection state. Client application does not + * get this error code. + * :macro:`NGTCP2_ERR_DROP_CONN` + * Server application must drop the connection silently (without + * sending any CONNECTION_CLOSE frame), and discard connection + * state. Client application does not get this error code. + * :macro:`NGTCP2_ERR_DRAINING` + * A connection has entered the draining state, and no further + * packet transmission is allowed. + * :macro:`NGTCP2_ERR_CLOSING` + * A connection has entered the closing state, and no further + * packet transmission is allowed. Calling + * `ngtcp2_conn_write_connection_close` makes a connection enter + * this state. + * :macro:`NGTCP2_ERR_CRYPTO` + * An error happened in TLS stack. `ngtcp2_conn_get_tls_alert` + * returns TLS alert if set. + * + * If any other negative error is returned, call + * `ngtcp2_conn_write_connection_close` to get terminal packet, and + * sending it makes QUIC connection enter the closing state. + */ +NGTCP2_EXTERN int +ngtcp2_conn_read_pkt_versioned(ngtcp2_conn *conn, const ngtcp2_path *path, + int pkt_info_version, const ngtcp2_pkt_info *pi, + const uint8_t *pkt, size_t pktlen, + ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_conn_write_pkt` is equivalent to calling + * `ngtcp2_conn_writev_stream` with -1 as |stream_id|, no stream data, + * and :macro:`NGTCP2_WRITE_STREAM_FLAG_NONE` as flags. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_conn_write_pkt_versioned( + ngtcp2_conn *conn, ngtcp2_path *path, int pkt_info_version, + ngtcp2_pkt_info *pi, uint8_t *dest, size_t destlen, ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_conn_tls_handshake_completed` tells |conn| that the TLS + * stack declares TLS handshake completion. This does not mean QUIC + * handshake has completed. The library needs extra conditions to be + * met. + */ +NGTCP2_EXTERN void ngtcp2_conn_tls_handshake_completed(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_handshake_completed` returns nonzero if QUIC + * handshake has completed. + */ +NGTCP2_EXTERN int ngtcp2_conn_get_handshake_completed(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_install_initial_key` installs packet protection keying + * materials for Initial packets. |rx_aead_ctx| is AEAD cipher + * context object, and must be initialized with a decryption key. + * |rx_iv| is IV of length |rx_ivlen| for decryption. |rx_hp_ctx| is + * a packet header protection cipher context object for decryption. + * Similarly, |tx_aead_ctx|, |tx_iv| and |tx_hp_ctx| are for + * encrypting outgoing packets, and are the same length with the + * decryption counterpart . If they have already been set, they are + * overwritten. + * + * |ivlen| must be the minimum length of AEAD nonce, or 8 bytes if + * that is larger. + * + * If this function succeeds, |conn| takes ownership of |rx_aead_ctx|, + * |rx_hp_ctx|, |tx_aead_ctx|, and |tx_hp_ctx|. + * :member:`ngtcp2_callbacks.delete_crypto_aead_ctx` and + * :member:`ngtcp2_callbacks.delete_crypto_cipher_ctx` will be called + * to delete these objects when they are no longer used. If this + * function fails, the caller is responsible to delete them. + * + * After receiving Retry packet, a Destination Connection ID that + * client sends in Initial packet most likely changes. In that case, + * client application must generate these keying materials again based + * on new Destination Connection ID, and install them again with this + * function. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + */ +NGTCP2_EXTERN int ngtcp2_conn_install_initial_key( + ngtcp2_conn *conn, const ngtcp2_crypto_aead_ctx *rx_aead_ctx, + const uint8_t *rx_iv, const ngtcp2_crypto_cipher_ctx *rx_hp_ctx, + const ngtcp2_crypto_aead_ctx *tx_aead_ctx, const uint8_t *tx_iv, + const ngtcp2_crypto_cipher_ctx *tx_hp_ctx, size_t ivlen); + +/** + * @function + * + * `ngtcp2_conn_install_vneg_initial_key` installs packet protection + * keying materials for Initial packets on compatible version + * negotiation for |version|. |rx_aead_ctx| is AEAD cipher context + * object, and must be initialized with a decryption key. |rx_iv| is + * IV of length |rx_ivlen| for decryption. |rx_hp_ctx| is a packet + * header protection cipher context object for decryption. Similarly, + * |tx_aead_ctx|, |tx_iv| and |tx_hp_ctx| are for encrypting outgoing + * packets, and are the same length with the decryption counterpart. + * If they have already been set, they are overwritten. + * + * |ivlen| must be the minimum length of AEAD nonce, or 8 bytes if + * that is larger. + * + * If this function succeeds, |conn| takes ownership of |rx_aead_ctx|, + * |rx_hp_ctx|, |tx_aead_ctx|, and |tx_hp_ctx|. + * :member:`ngtcp2_callbacks.delete_crypto_aead_ctx` and + * :member:`ngtcp2_callbacks.delete_crypto_cipher_ctx` will be called + * to delete these objects when they are no longer used. If this + * function fails, the caller is responsible to delete them. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + */ +NGTCP2_EXTERN int ngtcp2_conn_install_vneg_initial_key( + ngtcp2_conn *conn, uint32_t version, + const ngtcp2_crypto_aead_ctx *rx_aead_ctx, const uint8_t *rx_iv, + const ngtcp2_crypto_cipher_ctx *rx_hp_ctx, + const ngtcp2_crypto_aead_ctx *tx_aead_ctx, const uint8_t *tx_iv, + const ngtcp2_crypto_cipher_ctx *tx_hp_ctx, size_t ivlen); + +/** + * @function + * + * `ngtcp2_conn_install_rx_handshake_key` installs packet protection + * keying materials for decrypting incoming Handshake packets. + * |aead_ctx| is AEAD cipher context object which must be initialized + * with a decryption key. |iv| is IV of length |ivlen|. |hp_ctx| is + * a packet header protection cipher context object. + * + * |ivlen| must be the minimum length of AEAD nonce, or 8 bytes if + * that is larger. + * + * If this function succeeds, |conn| takes ownership of |aead_ctx|, + * and |hp_ctx|. :member:`ngtcp2_callbacks.delete_crypto_aead_ctx` + * and :member:`ngtcp2_callbacks.delete_crypto_cipher_ctx` will be + * called to delete these objects when they are no longer used. If + * this function fails, the caller is responsible to delete them. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + */ +NGTCP2_EXTERN int ngtcp2_conn_install_rx_handshake_key( + ngtcp2_conn *conn, const ngtcp2_crypto_aead_ctx *aead_ctx, const uint8_t *iv, + size_t ivlen, const ngtcp2_crypto_cipher_ctx *hp_ctx); + +/** + * @function + * + * `ngtcp2_conn_install_tx_handshake_key` installs packet protection + * keying materials for encrypting outgoing Handshake packets. + * |aead_ctx| is AEAD cipher context object which must be initialized + * with an encryption key. |iv| is IV of length |ivlen|. |hp_ctx| is + * a packet header protection cipher context object. + * + * |ivlen| must be the minimum length of AEAD nonce, or 8 bytes if + * that is larger. + * + * If this function succeeds, |conn| takes ownership of |aead_ctx| and + * |hp_ctx|. :member:`ngtcp2_callbacks.delete_crypto_aead_ctx` and + * :member:`ngtcp2_callbacks.delete_crypto_cipher_ctx` will be called + * to delete these objects when they are no longer used. If this + * function fails, the caller is responsible to delete them. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + */ +NGTCP2_EXTERN int ngtcp2_conn_install_tx_handshake_key( + ngtcp2_conn *conn, const ngtcp2_crypto_aead_ctx *aead_ctx, const uint8_t *iv, + size_t ivlen, const ngtcp2_crypto_cipher_ctx *hp_ctx); + +/** + * @function + * + * `ngtcp2_conn_install_0rtt_key` installs packet protection AEAD + * cipher context object |aead_ctx|, IV |iv| of length |ivlen|, and + * packet header protection cipher context object |hp_ctx| to encrypt + * (for client) or decrypt (for server) 0-RTT packets. + * + * |ivlen| must be the minimum length of AEAD nonce, or 8 bytes if + * that is larger. + * + * If this function succeeds, |conn| takes ownership of |aead_ctx| and + * |hp_ctx|. :member:`ngtcp2_callbacks.delete_crypto_aead_ctx` and + * :member:`ngtcp2_callbacks.delete_crypto_cipher_ctx` will be called + * to delete these objects when they are no longer used. If this + * function fails, the caller is responsible to delete them. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + */ +NGTCP2_EXTERN int ngtcp2_conn_install_0rtt_key( + ngtcp2_conn *conn, const ngtcp2_crypto_aead_ctx *aead_ctx, const uint8_t *iv, + size_t ivlen, const ngtcp2_crypto_cipher_ctx *hp_ctx); + +/** + * @function + * + * `ngtcp2_conn_install_rx_key` installs packet protection keying + * materials for decrypting 1-RTT packets. |secret| of length + * |secretlen| is the decryption secret which is used to derive keying + * materials passed to this function. |aead_ctx| is AEAD cipher + * context object which must be initialized with a decryption key. + * |iv| is IV of length |ivlen|. |hp_ctx| is a packet header + * protection cipher context object. + * + * |ivlen| must be the minimum length of AEAD nonce, or 8 bytes if + * that is larger. + * + * If this function succeeds, |conn| takes ownership of |aead_ctx| and + * |hp_ctx|. :member:`ngtcp2_callbacks.delete_crypto_aead_ctx` and + * :member:`ngtcp2_callbacks.delete_crypto_cipher_ctx` will be called + * to delete these objects when they are no longer used. If this + * function fails, the caller is responsible to delete them. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + */ +NGTCP2_EXTERN int ngtcp2_conn_install_rx_key( + ngtcp2_conn *conn, const uint8_t *secret, size_t secretlen, + const ngtcp2_crypto_aead_ctx *aead_ctx, const uint8_t *iv, size_t ivlen, + const ngtcp2_crypto_cipher_ctx *hp_ctx); + +/** + * @function + * + * `ngtcp2_conn_install_tx_key` installs packet protection keying + * materials for encrypting 1-RTT packets. |secret| of length + * |secretlen| is the encryption secret which is used to derive keying + * materials passed to this function. |aead_ctx| is AEAD cipher + * context object which must be initialized with an encryption key. + * |iv| is IV of length |ivlen|. |hp_ctx| is a packet header + * protection cipher context object. + * + * |ivlen| must be the minimum length of AEAD nonce, or 8 bytes if + * that is larger. + * + * If this function succeeds, |conn| takes ownership of |aead_ctx| and + * |hp_ctx|. :member:`ngtcp2_callbacks.delete_crypto_aead_ctx` and + * :member:`ngtcp2_callbacks.delete_crypto_cipher_ctx` will be called + * to delete these objects when they are no longer used. If this + * function fails, the caller is responsible to delete them. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + */ +NGTCP2_EXTERN int ngtcp2_conn_install_tx_key( + ngtcp2_conn *conn, const uint8_t *secret, size_t secretlen, + const ngtcp2_crypto_aead_ctx *aead_ctx, const uint8_t *iv, size_t ivlen, + const ngtcp2_crypto_cipher_ctx *hp_ctx); + +/** + * @function + * + * `ngtcp2_conn_initiate_key_update` initiates the key update. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_INVALID_STATE` + * The previous key update has not been confirmed yet; or key + * update is too frequent; or new keys are not available yet. + */ +NGTCP2_EXTERN int ngtcp2_conn_initiate_key_update(ngtcp2_conn *conn, + ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_conn_set_tls_error` sets the TLS related error |liberr| in + * |conn|. |liberr| must be one of ngtcp2 library error codes (which + * is defined as NGTCP2_ERR_* macro, such as + * :macro:`NGTCP2_ERR_DECRYPT`). In general, error code should be + * propagated via return value, but sometimes ngtcp2 API is called + * inside callback function of TLS stack, and it does not allow to + * return ngtcp2 error code directly. In this case, implementation + * can set the error code (e.g., + * :macro:`NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM`) using this function. + * + * See also `ngtcp2_conn_get_tls_error`. + */ +NGTCP2_EXTERN void ngtcp2_conn_set_tls_error(ngtcp2_conn *conn, int liberr); + +/** + * @function + * + * `ngtcp2_conn_get_tls_error` returns the value set by + * `ngtcp2_conn_set_tls_error`. If no value is set, this function + * returns 0. + */ +NGTCP2_EXTERN int ngtcp2_conn_get_tls_error(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_set_tls_alert` sets a TLS alert |alert| generated by a + * TLS stack of a local endpoint to |conn|. + * + * See also `ngtcp2_conn_get_tls_alert`. + */ +NGTCP2_EXTERN void ngtcp2_conn_set_tls_alert(ngtcp2_conn *conn, uint8_t alert); + +/** + * @function + * + * `ngtcp2_conn_get_tls_alert` returns the value set by + * `ngtcp2_conn_set_tls_alert`. If no value is set, this function + * returns 0. + */ +NGTCP2_EXTERN uint8_t ngtcp2_conn_get_tls_alert(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_set_keep_alive_timeout` sets keep-alive timeout. If + * nonzero value is given, after a connection is idle at least in a + * given amount of time, a keep-alive packet is sent. If UINT64_MAX + * is set, keep-alive functionality is disabled, and this is the + * default. Specifying 0 in |timeout| is reserved for a future + * extension, and for now it is treated as if UINT64_MAX is given. + */ +NGTCP2_EXTERN void ngtcp2_conn_set_keep_alive_timeout(ngtcp2_conn *conn, + ngtcp2_duration timeout); + +/** + * @function + * + * `ngtcp2_conn_get_expiry` returns the next expiry time. It returns + * ``UINT64_MAX`` if there is no next expiry. + * + * Call `ngtcp2_conn_handle_expiry` and then + * `ngtcp2_conn_writev_stream` (or `ngtcp2_conn_writev_datagram`) when + * the expiry time has passed. + */ +NGTCP2_EXTERN ngtcp2_tstamp ngtcp2_conn_get_expiry(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_handle_expiry` handles expired timer. + */ +NGTCP2_EXTERN int ngtcp2_conn_handle_expiry(ngtcp2_conn *conn, + ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_conn_get_pto` returns Probe Timeout (PTO). + */ +NGTCP2_EXTERN ngtcp2_duration ngtcp2_conn_get_pto(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_decode_and_set_remote_transport_params` decodes QUIC + * transport parameters from the buffer pointed by |data| of length + * |datalen|, and sets the result to |conn|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_REQUIRED_TRANSPORT_PARAM` + * The required parameter is missing. + * :macro:`NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM` + * The input is malformed. + * :macro:`NGTCP2_ERR_TRANSPORT_PARAM` + * Failed to validate the remote QUIC transport parameters. + * :macro:`NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE` + * Version negotiation failure. + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` + * User callback failed + */ +NGTCP2_EXTERN int ngtcp2_conn_decode_and_set_remote_transport_params( + ngtcp2_conn *conn, const uint8_t *data, size_t datalen); + +/** + * @function + * + * `ngtcp2_conn_get_remote_transport_params` returns a pointer to the + * remote QUIC transport parameters. If no remote transport + * parameters are set, it returns NULL. + */ +NGTCP2_EXTERN const ngtcp2_transport_params * +ngtcp2_conn_get_remote_transport_params(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_encode_0rtt_transport_params` encodes the QUIC + * transport parameters that are used for 0-RTT data in the buffer + * pointed by |dest| of length |destlen|. It includes at least the + * following fields: + * + * - :member:`ngtcp2_transport_params.initial_max_streams_bidi` + * - :member:`ngtcp2_transport_params.initial_max_streams_uni` + * - :member:`ngtcp2_transport_params.initial_max_stream_data_bidi_local` + * - :member:`ngtcp2_transport_params.initial_max_stream_data_bidi_remote` + * - :member:`ngtcp2_transport_params.initial_max_stream_data_uni` + * - :member:`ngtcp2_transport_params.initial_max_data` + * - :member:`ngtcp2_transport_params.active_connection_id_limit` + * - :member:`ngtcp2_transport_params.max_datagram_frame_size` + * + * If |conn| is initialized as server, the following additional fields + * are also included: + * + * - :member:`ngtcp2_transport_params.max_idle_timeout` + * - :member:`ngtcp2_transport_params.max_udp_payload_size` + * - :member:`ngtcp2_transport_params.disable_active_migration` + * + * If |conn| is initialized as client, these parameters are + * synthesized from the remote transport parameters received from + * server. Otherwise, it is the local transport parameters that are + * set by the local endpoint. + * + * This function returns the number of bytes written, or one of the + * following negative error codes: + * + * :macro:`NGTCP2_ERR_NOBUF` + * Buffer is too small. + */ +NGTCP2_EXTERN +ngtcp2_ssize ngtcp2_conn_encode_0rtt_transport_params(ngtcp2_conn *conn, + uint8_t *dest, + size_t destlen); + +/** + * @function + * + * `ngtcp2_conn_decode_and_set_0rtt_transport_params` decodes QUIC + * transport parameters from |data| of length |datalen|, which is + * assumed to be the parameters received from the server in the + * previous connection, and sets it to |conn|. These parameters are + * used to send 0-RTT data. QUIC requires that client application + * should remember transport parameters along with a session ticket. + * + * At least following fields should be included: + * + * - :member:`ngtcp2_transport_params.initial_max_streams_bidi` + * - :member:`ngtcp2_transport_params.initial_max_streams_uni` + * - :member:`ngtcp2_transport_params.initial_max_stream_data_bidi_local` + * - :member:`ngtcp2_transport_params.initial_max_stream_data_bidi_remote` + * - :member:`ngtcp2_transport_params.initial_max_stream_data_uni` + * - :member:`ngtcp2_transport_params.initial_max_data` + * - :member:`ngtcp2_transport_params.active_connection_id_limit` + * - :member:`ngtcp2_transport_params.max_datagram_frame_size` (if + * DATAGRAM extension was negotiated) + * + * This function must only be used by client. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + * :macro:`NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM` + * The input is malformed. + */ +NGTCP2_EXTERN int ngtcp2_conn_decode_and_set_0rtt_transport_params( + ngtcp2_conn *conn, const uint8_t *data, size_t datalen); + +/** + * @function + * + * `ngtcp2_conn_set_local_transport_params` sets the local transport + * parameters |params|. This function can only be called by server. + * Although the local transport parameters are passed to + * `ngtcp2_conn_server_new`, server might want to update them after + * ALPN is chosen. In that case, server can update the transport + * parameters with this function. Server must call this function + * before calling `ngtcp2_conn_install_tx_handshake_key`. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_INVALID_STATE` + * `ngtcp2_conn_install_tx_handshake_key` has been called. + */ +NGTCP2_EXTERN int ngtcp2_conn_set_local_transport_params_versioned( + ngtcp2_conn *conn, int transport_params_version, + const ngtcp2_transport_params *params); + +/** + * @function + * + * `ngtcp2_conn_get_local_transport_params` returns a pointer to the + * local QUIC transport parameters. + */ +NGTCP2_EXTERN const ngtcp2_transport_params * +ngtcp2_conn_get_local_transport_params(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_encode_local_transport_params` encodes the local QUIC + * transport parameters in |dest| of length |destlen|. + * + * This function returns the number of bytes written, or one of the + * following negative error codes: + * + * :macro:`NGTCP2_ERR_NOBUF` + * Buffer is too small. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_conn_encode_local_transport_params( + ngtcp2_conn *conn, uint8_t *dest, size_t destlen); + +/** + * @function + * + * `ngtcp2_conn_open_bidi_stream` opens new bidirectional stream. The + * |stream_user_data| is the user data specific to the stream. The + * stream ID of the opened stream is stored in |*pstream_id|. + * + * Application can call this function before handshake completes. For + * 0-RTT packet, application can call this function after calling + * `ngtcp2_conn_decode_and_set_0rtt_transport_params`. For 1-RTT + * packet, application can call this function after calling + * `ngtcp2_conn_decode_and_set_remote_transport_params` and + * `ngtcp2_conn_install_tx_key`. If ngtcp2 crypto support library is + * used, application can call this function after calling + * `ngtcp2_crypto_derive_and_install_tx_key` for 1-RTT packet. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory + * :macro:`NGTCP2_ERR_STREAM_ID_BLOCKED` + * The remote endpoint does not allow |stream_id| yet. + */ +NGTCP2_EXTERN int ngtcp2_conn_open_bidi_stream(ngtcp2_conn *conn, + int64_t *pstream_id, + void *stream_user_data); + +/** + * @function + * + * `ngtcp2_conn_open_uni_stream` opens new unidirectional stream. The + * |stream_user_data| is the user data specific to the stream. The + * stream ID of the opened stream is stored in |*pstream_id|. + * + * Application can call this function before handshake completes. For + * 0-RTT packet, application can call this function after calling + * `ngtcp2_conn_decode_and_set_0rtt_transport_params`. For 1-RTT + * packet, application can call this function after calling + * `ngtcp2_conn_decode_and_set_remote_transport_params` and + * `ngtcp2_conn_install_tx_key`. If ngtcp2 crypto support library is + * used, application can call this function after calling + * `ngtcp2_crypto_derive_and_install_tx_key` for 1-RTT packet. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory + * :macro:`NGTCP2_ERR_STREAM_ID_BLOCKED` + * The remote endpoint does not allow |stream_id| yet. + */ +NGTCP2_EXTERN int ngtcp2_conn_open_uni_stream(ngtcp2_conn *conn, + int64_t *pstream_id, + void *stream_user_data); + +/** + * @function + * + * `ngtcp2_conn_shutdown_stream` closes a stream denoted by + * |stream_id| abruptly. |app_error_code| is one of application error + * codes, and indicates the reason of shutdown. Successful call of + * this function does not immediately erase the state of the stream. + * The actual deletion is done when the remote endpoint sends + * acknowledgement. Calling this function is equivalent to call + * `ngtcp2_conn_shutdown_stream_read`, and + * `ngtcp2_conn_shutdown_stream_write` sequentially with the following + * differences. If |stream_id| refers to a local unidirectional + * stream, this function only shutdowns write side of the stream. If + * |stream_id| refers to a remote unidirectional stream, this function + * only shutdowns read side of the stream. + * + * |flags| is currently unused, and should be set to 0. + * + * This function returns 0 if a stream denoted by |stream_id| is not + * found. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory + */ +NGTCP2_EXTERN int ngtcp2_conn_shutdown_stream(ngtcp2_conn *conn, uint32_t flags, + int64_t stream_id, + uint64_t app_error_code); + +/** + * @function + * + * `ngtcp2_conn_shutdown_stream_write` closes write-side of a stream + * denoted by |stream_id| abruptly. |app_error_code| is one of + * application error codes, and indicates the reason of shutdown. If + * this function succeeds, no further application data is sent to the + * remote endpoint. It discards all data which has not been + * acknowledged yet. + * + * |flags| is currently unused, and should be set to 0. + * + * This function returns 0 if a stream denoted by |stream_id| is not + * found. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` + * |stream_id| refers to a remote unidirectional stream. + */ +NGTCP2_EXTERN int ngtcp2_conn_shutdown_stream_write(ngtcp2_conn *conn, + uint32_t flags, + int64_t stream_id, + uint64_t app_error_code); + +/** + * @function + * + * `ngtcp2_conn_shutdown_stream_read` closes read-side of a stream + * denoted by |stream_id| abruptly. |app_error_code| is one of + * application error codes, and indicates the reason of shutdown. If + * this function succeeds, no further application data is forwarded to + * an application layer. + * + * |flags| is currently unused, and should be set to 0. + * + * This function returns 0 if a stream denoted by |stream_id| is not + * found. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` + * |stream_id| refers to a local unidirectional stream. + */ +NGTCP2_EXTERN int ngtcp2_conn_shutdown_stream_read(ngtcp2_conn *conn, + uint32_t flags, + int64_t stream_id, + uint64_t app_error_code); + +/** + * @macrosection + * + * Write stream data flags + */ + +/** + * @macro + * + * :macro:`NGTCP2_WRITE_STREAM_FLAG_NONE` indicates no flag set. + */ +#define NGTCP2_WRITE_STREAM_FLAG_NONE 0x00u + +/** + * @macro + * + * :macro:`NGTCP2_WRITE_STREAM_FLAG_MORE` indicates that more data may + * come, and should be coalesced into the same packet if possible. + */ +#define NGTCP2_WRITE_STREAM_FLAG_MORE 0x01u + +/** + * @macro + * + * :macro:`NGTCP2_WRITE_STREAM_FLAG_FIN` indicates that a passed data + * is the final part of a stream. + */ +#define NGTCP2_WRITE_STREAM_FLAG_FIN 0x02u + +/** + * @function + * + * `ngtcp2_conn_write_stream` is just like + * `ngtcp2_conn_writev_stream`. The only difference is that it + * conveniently accepts a single buffer. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_conn_write_stream_versioned( + ngtcp2_conn *conn, ngtcp2_path *path, int pkt_info_version, + ngtcp2_pkt_info *pi, uint8_t *dest, size_t destlen, ngtcp2_ssize *pdatalen, + uint32_t flags, int64_t stream_id, const uint8_t *data, size_t datalen, + ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_conn_writev_stream` writes a packet containing stream data + * of a stream denoted by |stream_id|. The buffer of the packet is + * pointed by |dest| of length |destlen|. This function performs QUIC + * handshake as well. + * + * |destlen| should be at least + * :member:`ngtcp2_settings.max_tx_udp_payload_size`. It must be at + * least :macro:`NGTCP2_MAX_UDP_PAYLOAD_SIZE`. + * + * Specifying -1 to |stream_id| means no new stream data to send. + * + * If |path| is not ``NULL``, this function stores the network path + * with which the packet should be sent. Each addr field + * (:member:`ngtcp2_path.local` and :member:`ngtcp2_path.remote`) must + * point to the buffer which should be at least + * sizeof(:type:`sockaddr_union`) bytes long. The assignment might + * not be done if nothing is written to |dest|. + * + * If |pi| is not ``NULL``, this function stores packet metadata in it + * if it succeeds. The metadata includes ECN markings. When calling + * this function again after it returns + * :macro:`NGTCP2_ERR_WRITE_MORE`, caller must pass the same |pi| to + * this function. + * + * Stream data is specified as vector of data |datav|. |datavcnt| + * specifies the number of :type:`ngtcp2_vec` that |datav| includes. + * + * If all given data is encoded as STREAM frame in |dest|, and if + * |flags| & :macro:`NGTCP2_WRITE_STREAM_FLAG_FIN` is nonzero, fin + * flag is set to outgoing STREAM frame. Otherwise, fin flag in + * STREAM frame is not set. + * + * This packet may contain frames other than STREAM frame. The packet + * might not contain STREAM frame if other frames occupy the packet. + * In that case, |*pdatalen| would be -1 if |pdatalen| is not + * ``NULL``. + * + * Empty data is treated specially, and it is only accepted if no + * data, including the empty data, is submitted to a stream or + * :macro:`NGTCP2_WRITE_STREAM_FLAG_FIN` is set in |flags|. If 0 + * length STREAM frame is successfully serialized, |*pdatalen| would + * be 0. + * + * The number of data encoded in STREAM frame is stored in |*pdatalen| + * if it is not ``NULL``. The caller must keep the portion of data + * covered by |*pdatalen| bytes in tact until + * :member:`ngtcp2_callbacks.acked_stream_data_offset` indicates that + * they are acknowledged by a remote endpoint or the stream is closed. + * + * If the given stream data is small (e.g., few bytes), the packet + * might be severely under filled. Too many small packet might + * increase overall packet processing costs. Unless there are + * retransmissions, by default, application can only send 1 STREAM + * frame in one QUIC packet. In order to include more than 1 STREAM + * frame in one QUIC packet, specify + * :macro:`NGTCP2_WRITE_STREAM_FLAG_MORE` in |flags|. This is + * analogous to ``MSG_MORE`` flag in :manpage:`send(2)`. If the + * :macro:`NGTCP2_WRITE_STREAM_FLAG_MORE` is used, there are 4 + * outcomes: + * + * - The function returns the written length of packet just like + * without :macro:`NGTCP2_WRITE_STREAM_FLAG_MORE`. This is because + * packet is nearly full, and the library decided to make a complete + * packet. |*pdatalen| might be -1 or >= 0. It may return 0 which + * indicates that no packet transmission is possible at the moment + * for some reason. + * + * - The function returns :macro:`NGTCP2_ERR_WRITE_MORE`. In this + * case, |*pdatalen| >= 0 is asserted. It indicates that + * application can still call this function with different stream + * data (or `ngtcp2_conn_writev_datagram` if it has data to send in + * unreliable datagram) to pack them into the same packet. + * Application has to specify the same |conn|, |path|, |pi|, |dest|, + * |destlen|, and |ts| parameters, otherwise the behaviour is + * undefined. The application can change |flags|. + * + * - The function returns one of the following negative error codes: + * :macro:`NGTCP2_ERR_STREAM_DATA_BLOCKED`, + * :macro:`NGTCP2_ERR_STREAM_NOT_FOUND`, or + * :macro:`NGTCP2_ERR_STREAM_SHUT_WR`. In this case, |*pdatalen| == + * -1 is asserted. Application can still write the stream data of + * the other streams by calling this function (or + * `ngtcp2_conn_writev_datagram` if it has data to send in + * unreliable datagram) to pack them into the same packet. + * Application has to specify the same |conn|, |path|, |pi|, |dest|, + * |destlen|, and |ts| parameters, otherwise the behaviour is + * undefined. The application can change |flags|. + * + * - The other negative error codes might be returned just like + * without :macro:`NGTCP2_WRITE_STREAM_FLAG_MORE`. These errors + * should be treated as a connection error. + * + * When application uses :macro:`NGTCP2_WRITE_STREAM_FLAG_MORE` at + * least once, it must not call other ngtcp2 API functions + * (application can still call `ngtcp2_conn_write_connection_close` to + * handle error from this function. It can also call + * `ngtcp2_conn_shutdown_stream_read`, + * `ngtcp2_conn_shutdown_stream_write`, and + * `ngtcp2_conn_shutdown_stream`), just keep calling this function (or + * `ngtcp2_conn_writev_datagram`) until it returns 0, a positive + * number (which indicates a complete packet is ready), or the error + * codes other than :macro:`NGTCP2_ERR_WRITE_MORE`, + * :macro:`NGTCP2_ERR_STREAM_DATA_BLOCKED`, + * :macro:`NGTCP2_ERR_STREAM_NOT_FOUND`, and + * :macro:`NGTCP2_ERR_STREAM_SHUT_WR`. If there is no stream data to + * include, call this function with |stream_id| as -1 to stop + * coalescing and write a packet. + * + * This function returns 0 if it cannot write any frame because buffer + * is too small, or packet is congestion limited. Application should + * keep reading and wait for congestion window to grow. + * + * This function must not be called from inside the callback + * functions. + * + * `ngtcp2_conn_update_pkt_tx_time` must be called after this + * function. Application may call this function multiple times before + * calling `ngtcp2_conn_update_pkt_tx_time`. + * + * This function returns the number of bytes written in |dest| if it + * succeeds, or one of the following negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory + * :macro:`NGTCP2_ERR_STREAM_NOT_FOUND` + * Stream does not exist + * :macro:`NGTCP2_ERR_STREAM_SHUT_WR` + * Stream is half closed (local); or stream is being reset. + * :macro:`NGTCP2_ERR_PKT_NUM_EXHAUSTED` + * Packet number is exhausted, and cannot send any more packet. + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` + * User callback failed + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` + * The total length of stream data is too large. + * :macro:`NGTCP2_ERR_STREAM_DATA_BLOCKED` + * Stream is blocked because of flow control. + * :macro:`NGTCP2_ERR_WRITE_MORE` + * (Only when :macro:`NGTCP2_WRITE_STREAM_FLAG_MORE` is specified) + * Application can call this function to pack more stream data + * into the same packet. See above to know how it works. + * + * If any other negative error is returned, call + * `ngtcp2_conn_write_connection_close` to get terminal packet, and + * sending it makes QUIC connection enter the closing state. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_conn_writev_stream_versioned( + ngtcp2_conn *conn, ngtcp2_path *path, int pkt_info_version, + ngtcp2_pkt_info *pi, uint8_t *dest, size_t destlen, ngtcp2_ssize *pdatalen, + uint32_t flags, int64_t stream_id, const ngtcp2_vec *datav, size_t datavcnt, + ngtcp2_tstamp ts); + +/** + * @macrosection + * + * Write datagram flags + */ + +/** + * @macro + * + * :macro:`NGTCP2_WRITE_DATAGRAM_FLAG_NONE` indicates no flag set. + */ +#define NGTCP2_WRITE_DATAGRAM_FLAG_NONE 0x00u + +/** + * @macro + * + * :macro:`NGTCP2_WRITE_DATAGRAM_FLAG_MORE` indicates that more data + * may come, and should be coalesced into the same packet if possible. + */ +#define NGTCP2_WRITE_DATAGRAM_FLAG_MORE 0x01u + +/** + * @function + * + * `ngtcp2_conn_write_datagram` is just like + * `ngtcp2_conn_writev_datagram`. The only difference is that it + * conveniently accepts a single buffer. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_conn_write_datagram_versioned( + ngtcp2_conn *conn, ngtcp2_path *path, int pkt_info_version, + ngtcp2_pkt_info *pi, uint8_t *dest, size_t destlen, int *paccepted, + uint32_t flags, uint64_t dgram_id, const uint8_t *data, size_t datalen, + ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_conn_writev_datagram` writes a packet containing unreliable + * data in DATAGRAM frame. The buffer of the packet is pointed by + * |dest| of length |destlen|. This function performs QUIC handshake + * as well. + * + * |destlen| should be at least + * :member:`ngtcp2_settings.max_tx_udp_payload_size`. It must be at + * least :macro:`NGTCP2_MAX_UDP_PAYLOAD_SIZE`. + * + * For |path| and |pi| parameters, refer to + * `ngtcp2_conn_writev_stream`. + * + * Stream data is specified as vector of data |datav|. |datavcnt| + * specifies the number of :type:`ngtcp2_vec` that |datav| includes. + * + * If the given data is written to the buffer, nonzero value is + * assigned to |*paccepted| if it is not NULL. The data in DATAGRAM + * frame cannot be fragmented; writing partial data is not possible. + * + * |dgram_id| is an opaque identifier which should uniquely identify + * the given DATAGRAM data. It is passed to + * :member:`ngtcp2_callbacks.ack_datagram` callback when a packet that + * contains DATAGRAM frame is acknowledged. It is also passed to + * :member:`ngtcp2_callbacks.lost_datagram` callback when a packet + * that contains DATAGRAM frame is declared lost. If an application + * uses neither of those callbacks, it can sets 0 to this parameter. + * + * This function might write other frames other than DATAGRAM frame, + * just like `ngtcp2_conn_writev_stream`. + * + * If the function returns 0, it means that no more data cannot be + * sent because of congestion control limit; or, data does not fit + * into the provided buffer; or, a local endpoint, as a server, is + * unable to send data because of its amplification limit. In this + * case, |*paccepted| is assigned zero if it is not NULL. + * + * If :macro:`NGTCP2_WRITE_DATAGRAM_FLAG_MORE` is set in |flags|, + * there are 3 outcomes: + * + * - The function returns the written length of packet just like + * without :macro:`NGTCP2_WRITE_DATAGRAM_FLAG_MORE`. This is + * because packet is nearly full and the library decided to make a + * complete packet. |*paccepted| might be zero or nonzero. + * + * - The function returns :macro:`NGTCP2_ERR_WRITE_MORE`. In this + * case, |*paccepted| != 0 is asserted. This indicates that + * application can call this function with another unreliable data + * (or `ngtcp2_conn_writev_stream` if it has stream data to send) to + * pack them into the same packet. Application has to specify the + * same |conn|, |path|, |pi|, |dest|, |destlen|, and |ts| + * parameters, otherwise the behaviour is undefined. The + * application can change |flags|. + * + * - The other error might be returned just like without + * :macro:`NGTCP2_WRITE_DATAGRAM_FLAG_MORE`. + * + * When application sees :macro:`NGTCP2_ERR_WRITE_MORE`, it must not + * call other ngtcp2 API functions (application can still call + * `ngtcp2_conn_write_connection_close` to handle error from this + * function. It can also call `ngtcp2_conn_shutdown_stream_read`, + * `ngtcp2_conn_shutdown_stream_write`, and + * `ngtcp2_conn_shutdown_stream`). Just keep calling this function + * (or `ngtcp2_conn_writev_stream`) until it returns a positive number + * (which indicates a complete packet is ready). + * + * This function returns the number of bytes written in |dest| if it + * succeeds, or one of the following negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory + * :macro:`NGTCP2_ERR_PKT_NUM_EXHAUSTED` + * Packet number is exhausted, and cannot send any more packet. + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` + * User callback failed + * :macro:`NGTCP2_ERR_WRITE_MORE` + * (Only when :macro:`NGTCP2_WRITE_DATAGRAM_FLAG_MORE` is + * specified) Application can call this function to pack more data + * into the same packet. See above to know how it works. + * :macro:`NGTCP2_ERR_INVALID_STATE` + * A remote endpoint did not express the DATAGRAM frame support. + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` + * The provisional DATAGRAM frame size exceeds the maximum + * DATAGRAM frame size that a remote endpoint can receive. + * + * If any other negative error is returned, call + * `ngtcp2_conn_write_connection_close` to get terminal packet, and + * sending it makes QUIC connection enter the closing state. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_conn_writev_datagram_versioned( + ngtcp2_conn *conn, ngtcp2_path *path, int pkt_info_version, + ngtcp2_pkt_info *pi, uint8_t *dest, size_t destlen, int *paccepted, + uint32_t flags, uint64_t dgram_id, const ngtcp2_vec *datav, size_t datavcnt, + ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_conn_in_closing_period` returns nonzero if |conn| is in the + * closing period. + */ +NGTCP2_EXTERN int ngtcp2_conn_in_closing_period(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_in_draining_period` returns nonzero if |conn| is in + * the draining period. + */ +NGTCP2_EXTERN int ngtcp2_conn_in_draining_period(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_extend_max_stream_offset` extends the maximum stream + * data that a remote endpoint can send by |datalen|. |stream_id| + * specifies the stream ID. This function only extends stream-level + * flow control window. + * + * This function returns 0 if a stream denoted by |stream_id| is not + * found. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` + * |stream_id| refers to a local unidirectional stream. + */ +NGTCP2_EXTERN int ngtcp2_conn_extend_max_stream_offset(ngtcp2_conn *conn, + int64_t stream_id, + uint64_t datalen); + +/** + * @function + * + * `ngtcp2_conn_extend_max_offset` extends max data offset by + * |datalen|. This function only extends connection-level flow + * control window. + */ +NGTCP2_EXTERN void ngtcp2_conn_extend_max_offset(ngtcp2_conn *conn, + uint64_t datalen); + +/** + * @function + * + * `ngtcp2_conn_extend_max_streams_bidi` extends the number of maximum + * remote bidirectional streams that a remote endpoint can open by + * |n|. + * + * The library does not increase maximum stream limit automatically. + * The exception is when a stream is closed without + * :member:`ngtcp2_callbacks.stream_open` callback being called. In + * this case, stream limit is increased automatically. + */ +NGTCP2_EXTERN void ngtcp2_conn_extend_max_streams_bidi(ngtcp2_conn *conn, + size_t n); + +/** + * @function + * + * `ngtcp2_conn_extend_max_streams_uni` extends the number of maximum + * remote unidirectional streams that a remote endpoint can open by + * |n|. + * + * The library does not increase maximum stream limit automatically. + * The exception is when a stream is closed without + * :member:`ngtcp2_callbacks.stream_open` callback being called. In + * this case, stream limit is increased automatically. + */ +NGTCP2_EXTERN void ngtcp2_conn_extend_max_streams_uni(ngtcp2_conn *conn, + size_t n); + +/** + * @function + * + * `ngtcp2_conn_get_dcid` returns the non-NULL pointer to the current + * Destination Connection ID. If no Destination Connection ID is + * present, the return value is not ``NULL``, and its :member:`datalen + * <ngtcp2_cid.datalen>` field is 0. + */ +NGTCP2_EXTERN const ngtcp2_cid *ngtcp2_conn_get_dcid(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_client_initial_dcid` returns the non-NULL pointer + * to the Destination Connection ID that client sent in its Initial + * packet. If the Destination Connection ID is not present, the + * return value is not ``NULL``, and its :member:`datalen + * <ngtcp2_cid.datalen>` field is 0. + */ +NGTCP2_EXTERN const ngtcp2_cid * +ngtcp2_conn_get_client_initial_dcid(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_scid` writes the all Source Connection IDs which a + * local endpoint has provided to a remote endpoint, and are not + * retired in |dest|. If |dest| is NULL, this function does not write + * anything, and returns the number of Source Connection IDs that + * would otherwise be written to the provided buffer. The buffer + * pointed by |dest| must have sizeof(:type:`ngtcp2_cid`) * n bytes + * available, where n is the return value of `ngtcp2_conn_get_scid` + * with |dest| == NULL. + */ +NGTCP2_EXTERN size_t ngtcp2_conn_get_scid(ngtcp2_conn *conn, ngtcp2_cid *dest); + +/** + * @struct + * + * :type:`ngtcp2_cid_token` is the convenient struct to store + * Connection ID, its associated path, and stateless reset token. + */ +typedef struct ngtcp2_cid_token { + /** + * :member:`seq` is the sequence number of this Connection ID. + */ + uint64_t seq; + /** + * :member:`cid` is Connection ID. + */ + ngtcp2_cid cid; + /** + * :member:`ps` is the path which this Connection ID is associated + * with. + */ + ngtcp2_path_storage ps; + /** + * :member:`token` is the stateless reset token for this Connection + * ID. + */ + uint8_t token[NGTCP2_STATELESS_RESET_TOKENLEN]; + /** + * :member:`token_present` is nonzero if token contains stateless + * reset token. + */ + uint8_t token_present; +} ngtcp2_cid_token; + +/** + * @function + * + * `ngtcp2_conn_get_active_dcid` writes the all active Destination + * Connection IDs and their tokens to |dest|. Before handshake + * completes, this function returns 0. If |dest| is NULL, this + * function does not write anything, and returns the number of + * Destination Connection IDs that would otherwise be written to the + * provided buffer. The buffer pointed by |dest| must have + * sizeof(:type:`ngtcp2_cid_token`) * n bytes available, where n is + * the return value of `ngtcp2_conn_get_active_dcid` with |dest| == + * NULL. + */ +NGTCP2_EXTERN size_t ngtcp2_conn_get_active_dcid(ngtcp2_conn *conn, + ngtcp2_cid_token *dest); + +/** + * @function + * + * `ngtcp2_conn_get_client_chosen_version` returns the client chosen + * version. + */ +NGTCP2_EXTERN uint32_t ngtcp2_conn_get_client_chosen_version(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_negotiated_version` returns the negotiated + * version. + * + * Until the version is negotiated, this function returns 0. + */ +NGTCP2_EXTERN uint32_t ngtcp2_conn_get_negotiated_version(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_tls_early_data_rejected` tells |conn| that early data + * was rejected by a server during TLS handshake, or client decided + * not to attempt early data for some reason. |conn| discards the + * following connection states: + * + * - Any opened streams. + * - Stream identifier allocations. + * - Max data extended by `ngtcp2_conn_extend_max_offset`. + * - Max bidi streams extended by `ngtcp2_conn_extend_max_streams_bidi`. + * - Max uni streams extended by `ngtcp2_conn_extend_max_streams_uni`. + * + * Application which wishes to retransmit early data, it has to open + * streams, and send stream data again. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` + * User callback failed + */ +NGTCP2_EXTERN int ngtcp2_conn_tls_early_data_rejected(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_tls_early_data_rejected` returns nonzero if + * `ngtcp2_conn_tls_early_data_rejected` has been called. + */ +NGTCP2_EXTERN int ngtcp2_conn_get_tls_early_data_rejected(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_conn_info` assigns connection statistics data to + * |*cinfo|. + */ +NGTCP2_EXTERN void ngtcp2_conn_get_conn_info_versioned(ngtcp2_conn *conn, + int conn_info_version, + ngtcp2_conn_info *cinfo); + +/** + * @function + * + * `ngtcp2_conn_submit_crypto_data` submits crypto data |data| of + * length |datalen| to the library for transmission. + * |encryption_level| specifies the encryption level of data. + * + * The library makes a copy of the buffer pointed by |data| of length + * |datalen|. Application can discard |data|. + */ +NGTCP2_EXTERN int +ngtcp2_conn_submit_crypto_data(ngtcp2_conn *conn, + ngtcp2_encryption_level encryption_level, + const uint8_t *data, const size_t datalen); + +/** + * @function + * + * `ngtcp2_conn_submit_new_token` submits address validation token. + * It is sent in NEW_TOKEN frame. Only server can call this function. + * |tokenlen| must not be 0. + * + * This function makes a copy of the buffer pointed by |token| of + * length |tokenlen|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + */ +NGTCP2_EXTERN int ngtcp2_conn_submit_new_token(ngtcp2_conn *conn, + const uint8_t *token, + size_t tokenlen); + +/** + * @function + * + * `ngtcp2_conn_set_local_addr` sets local endpoint address |addr| to + * the current path of |conn|. This function is provided for testing + * purpose only. + */ +NGTCP2_EXTERN void ngtcp2_conn_set_local_addr(ngtcp2_conn *conn, + const ngtcp2_addr *addr); + +/** + * @function + * + * `ngtcp2_conn_set_path_user_data` sets the |path_user_data| to the + * current path (see :member:`ngtcp2_path.user_data`). + */ +NGTCP2_EXTERN void ngtcp2_conn_set_path_user_data(ngtcp2_conn *conn, + void *path_user_data); + +/** + * @function + * + * `ngtcp2_conn_get_path` returns the current path. + */ +NGTCP2_EXTERN const ngtcp2_path *ngtcp2_conn_get_path(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_max_tx_udp_payload_size` returns the maximum UDP + * payload size that this local endpoint would send. This is the + * value of :member:`ngtcp2_settings.max_tx_udp_payload_size` that is + * passed to `ngtcp2_conn_client_new` or `ngtcp2_conn_server_new`. + */ +NGTCP2_EXTERN size_t ngtcp2_conn_get_max_tx_udp_payload_size(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_path_max_tx_udp_payload_size` returns the maximum + * UDP payload size for the current path. If + * :member:`ngtcp2_settings.no_tx_udp_payload_size_shaping` is set to + * nonzero, this function is equivalent to + * `ngtcp2_conn_get_max_tx_udp_payload_size`. Otherwise, it returns + * the maximum UDP payload size that is probed for the current path. + */ +NGTCP2_EXTERN size_t +ngtcp2_conn_get_path_max_tx_udp_payload_size(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_initiate_immediate_migration` starts connection + * migration to the given |path|. Only client can initiate migration. + * This function does immediate migration; while the path validation + * is nonetheless performed, this function does not wait for it to + * succeed. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_INVALID_STATE` + * Migration is disabled; or handshake is not yet confirmed; or + * client is migrating to server's preferred address. + * :macro:`NGTCP2_ERR_CONN_ID_BLOCKED` + * No unused connection ID is available. + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` + * :member:`local <ngtcp2_path.local>` field of |path| equals the + * current local address. + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory + */ +NGTCP2_EXTERN int ngtcp2_conn_initiate_immediate_migration( + ngtcp2_conn *conn, const ngtcp2_path *path, ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_conn_initiate_migration` starts connection migration to the + * given |path|. Only client can initiate migration. Unlike + * `ngtcp2_conn_initiate_immediate_migration`, this function starts a + * path validation with a new path, and migrate to the new path after + * successful path validation. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_INVALID_STATE` + * Migration is disabled; or handshake is not yet confirmed; or + * client is migrating to server's preferred address. + * :macro:`NGTCP2_ERR_CONN_ID_BLOCKED` + * No unused connection ID is available. + * :macro:`NGTCP2_ERR_INVALID_ARGUMENT` + * :member:`local <ngtcp2_path.local>` field of |path| equals the + * current local address. + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory + */ +NGTCP2_EXTERN int ngtcp2_conn_initiate_migration(ngtcp2_conn *conn, + const ngtcp2_path *path, + ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_conn_get_max_data_left` returns the number of bytes that + * this local endpoint can send in this connection without violating + * connection-level flow control. + */ +NGTCP2_EXTERN uint64_t ngtcp2_conn_get_max_data_left(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_max_stream_data_left` returns the number of bytes + * that this local endpoint can send to a stream identified by + * |stream_id| without violating stream-level flow control. If no + * such stream is found, this function returns 0. + */ +NGTCP2_EXTERN uint64_t ngtcp2_conn_get_max_stream_data_left(ngtcp2_conn *conn, + int64_t stream_id); + +/** + * @function + * + * `ngtcp2_conn_get_streams_bidi_left` returns the number of + * bidirectional streams which the local endpoint can open without + * violating stream concurrency limit. + */ +NGTCP2_EXTERN uint64_t ngtcp2_conn_get_streams_bidi_left(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_streams_uni_left` returns the number of + * unidirectional streams which the local endpoint can open without + * violating stream concurrency limit. + */ +NGTCP2_EXTERN uint64_t ngtcp2_conn_get_streams_uni_left(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_cwnd_left` returns the cwnd minus the number of + * bytes in flight on the current path. If the former is smaller than + * the latter, this function returns 0. + */ +NGTCP2_EXTERN uint64_t ngtcp2_conn_get_cwnd_left(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_set_initial_crypto_ctx` sets |ctx| for Initial packet + * encryption. The passed data will be passed to + * :type:`ngtcp2_encrypt`, :type:`ngtcp2_decrypt` and + * :type:`ngtcp2_hp_mask` callbacks. + */ +NGTCP2_EXTERN void +ngtcp2_conn_set_initial_crypto_ctx(ngtcp2_conn *conn, + const ngtcp2_crypto_ctx *ctx); + +/** + * @function + * + * `ngtcp2_conn_get_initial_crypto_ctx` returns + * :type:`ngtcp2_crypto_ctx` object for Initial packet encryption. + */ +NGTCP2_EXTERN const ngtcp2_crypto_ctx * +ngtcp2_conn_get_initial_crypto_ctx(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_set_crypto_ctx` sets |ctx| for Handshake/1-RTT packet + * encryption. The passed data will be passed to + * :type:`ngtcp2_encrypt`, :type:`ngtcp2_decrypt` and + * :type:`ngtcp2_hp_mask` callbacks. + */ +NGTCP2_EXTERN void ngtcp2_conn_set_crypto_ctx(ngtcp2_conn *conn, + const ngtcp2_crypto_ctx *ctx); + +/** + * @function + * + * `ngtcp2_conn_get_crypto_ctx` returns :type:`ngtcp2_crypto_ctx` + * object for Handshake/1-RTT packet encryption. + */ +NGTCP2_EXTERN const ngtcp2_crypto_ctx * +ngtcp2_conn_get_crypto_ctx(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_set_0rtt_crypto_ctx` sets |ctx| for 0-RTT packet + * encryption. The passed data will be passed to + * :type:`ngtcp2_encrypt`, :type:`ngtcp2_decrypt` and + * :type:`ngtcp2_hp_mask` callbacks. + */ +NGTCP2_EXTERN void +ngtcp2_conn_set_0rtt_crypto_ctx(ngtcp2_conn *conn, + const ngtcp2_crypto_ctx *ctx); + +/** + * @function + * + * `ngtcp2_conn_get_0rtt_crypto_ctx` returns :type:`ngtcp2_crypto_ctx` + * object for 0-RTT packet encryption. + */ +NGTCP2_EXTERN const ngtcp2_crypto_ctx * +ngtcp2_conn_get_0rtt_crypto_ctx(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_tls_native_handle` returns TLS native handle set + * by `ngtcp2_conn_set_tls_native_handle`. + */ +NGTCP2_EXTERN void *ngtcp2_conn_get_tls_native_handle(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_set_tls_native_handle` sets TLS native handle + * |tls_native_handle| to |conn|. Internally, it is used as an opaque + * pointer. + */ +NGTCP2_EXTERN void ngtcp2_conn_set_tls_native_handle(ngtcp2_conn *conn, + void *tls_native_handle); + +/** + * @function + * + * `ngtcp2_conn_set_retry_aead` sets |aead| and |aead_ctx| for Retry + * integrity tag verification. |aead| must be AEAD_AES_128_GCM. + * |aead_ctx| must be initialized with :macro:`NGTCP2_RETRY_KEY` as + * encryption key. This function must be called if |conn| is + * initialized as client. Server does not verify the tag, and has no + * need to call this function. + * + * |conn| takes ownership of |aead_ctx|. + * :member:`ngtcp2_callbacks.delete_crypto_aead_ctx` will be called to + * delete this object when it is no longer used. + */ +NGTCP2_EXTERN void +ngtcp2_conn_set_retry_aead(ngtcp2_conn *conn, const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx); + +/** + * @enum + * + * :type:`ngtcp2_ccerr_type` defines connection error type. + */ +typedef enum ngtcp2_ccerr_type { + /** + * :enum:`NGTCP2_CCERR_TYPE_TRANSPORT` indicates the QUIC transport + * error, and the error code is QUIC transport error code. + */ + NGTCP2_CCERR_TYPE_TRANSPORT, + /** + * :enum:`NGTCP2_CCERR_TYPE_APPLICATION` indicates an application + * error, and the error code is application error code. + */ + NGTCP2_CCERR_TYPE_APPLICATION, + /** + * :enum:`NGTCP2_CCERR_TYPE_VERSION_NEGOTIATION` is a special case + * of QUIC transport error, and it indicates that client receives + * Version Negotiation packet. + */ + NGTCP2_CCERR_TYPE_VERSION_NEGOTIATION, + /** + * :enum:`NGTCP2_CCERR_TYPE_IDLE_CLOSE` is a special case of QUIC + * transport error, and it indicates that connection is closed + * because of idle timeout. + */ + NGTCP2_CCERR_TYPE_IDLE_CLOSE, + /** + * :enum:`NGTCP2_CCERR_TYPE_DROP_CONN` is a special case of QUIC + * transport error, and it indicates that connection should be + * dropped without sending a CONNECTION_CLOSE frame. + */ + NGTCP2_CCERR_TYPE_DROP_CONN, + /** + * :enum:`NGTCP2_CCERR_TYPE_RETRY` is a special case of QUIC + * transport error, and it indicates that RETRY packet should be + * sent to a client. + */ + NGTCP2_CCERR_TYPE_RETRY +} ngtcp2_ccerr_type; + +/** + * @struct + * + * :type:`ngtcp2_ccerr` contains connection error code, its type, a + * frame type that caused this error, and the optional reason phrase. + */ +typedef struct ngtcp2_ccerr { + /** + * :member:`type` is the type of this error. + */ + ngtcp2_ccerr_type type; + /** + * :member:`error_code` is the error code for connection closure. + * Its interpretation depends on :member:`type`. + */ + uint64_t error_code; + /** + * :member:`frame_type` is the type of QUIC frame which triggers + * this connection error. This field is set to 0 if the frame type + * is unknown. + */ + uint64_t frame_type; + /** + * :member:`reason` points to the buffer which contains a reason + * phrase. It may be NULL if there is no reason phrase. If it is + * received from a remote endpoint, it is truncated to at most 1024 + * bytes. + */ + const uint8_t *reason; + /** + * :member:`reasonlen` is the length of data pointed by + * :member:`reason`. + */ + size_t reasonlen; +} ngtcp2_ccerr; + +/** + * @function + * + * `ngtcp2_ccerr_default` initializes |ccerr| with the default values. + * It sets the following fields: + * + * - :member:`type <ngtcp2_ccerr.type>` = + * :enum:`ngtcp2_ccerr_type.NGTCP2_CCERR_TYPE_TRANSPORT` + * - :member:`error_code <ngtcp2_ccerr.error_code>` = + * :macro:`NGTCP2_NO_ERROR`. + * - :member:`frame_type <ngtcp2_ccerr.frame_type>` = 0 + * - :member:`reason <ngtcp2_ccerr.reason>` = NULL + * - :member:`reasonlen <ngtcp2_ccerr.reasonlen>` = 0 + */ +NGTCP2_EXTERN void ngtcp2_ccerr_default(ngtcp2_ccerr *ccerr); + +/** + * @function + * + * `ngtcp2_ccerr_set_transport_error` sets :member:`ccerr->type + * <ngtcp2_ccerr.type>` to + * :enum:`ngtcp2_ccerr_type.NGTCP2_CCERR_TYPE_TRANSPORT`, and + * :member:`ccerr->error_code <ngtcp2_ccerr.error_code>` to + * |error_code|. |reason| is the reason phrase of length |reasonlen|. + * This function does not make a copy of the reason phrase. + */ +NGTCP2_EXTERN void ngtcp2_ccerr_set_transport_error(ngtcp2_ccerr *ccerr, + uint64_t error_code, + const uint8_t *reason, + size_t reasonlen); + +/** + * @function + * + * `ngtcp2_ccerr_set_liberr` sets type and error_code based on + * |liberr|. + * + * |reason| is the reason phrase of length |reasonlen|. This function + * does not make a copy of the reason phrase. + * + * If |liberr| is :macro:`NGTCP2_ERR_RECV_VERSION_NEGOTIATION`, + * :member:`ccerr->type <ngtcp2_ccerr.type>` is set to + * :enum:`ngtcp2_ccerr_type.NGTCP2_CCERR_TYPE_VERSION_NEGOTIATION`, + * and :member:`ccerr->error_code <ngtcp2_ccerr.error_code>` to + * :macro:`NGTCP2_NO_ERROR`. + * + * If |liberr| is :macro:`NGTCP2_ERR_IDLE_CLOSE`, :member:`ccerr->type + * <ngtcp2_ccerr.type>` is set to + * :enum:`ngtcp2_ccerr_type.NGTCP2_CCERR_TYPE_IDLE_CLOSE`, and + * :member:`ccerr->error_code <ngtcp2_ccerr.error_code>` to + * :macro:`NGTCP2_NO_ERROR`. + * + * If |liberr| is :macro:`NGTCP2_ERR_DROP_CONN`, :member:`ccerr->type + * <ngtcp2_ccerr.type>` is set to + * :enum:`ngtcp2_ccerr_type.NGTCP2_CCERR_TYPE_DROP_CONN`, and + * :member:`ccerr->error_code <ngtcp2_ccerr.error_code>` to + * :macro:`NGTCP2_NO_ERROR`. + * + * If |liberr| is :macro:`NGTCP2_ERR_RETRY`, :member:`ccerr->type + * <ngtcp2_ccerr.type>` is set to + * :enum:`ngtcp2_ccerr_type.NGTCP2_CCERR_TYPE_RETRY`, and + * :member:`ccerr->error_type <ngtcp2_ccerr.error_code>` to + * :macro:`NGTCP2_NO_ERROR`. + * + * Otherwise, :member:`ccerr->type <ngtcp2_ccerr.type>` is set to + * :enum:`ngtcp2_ccerr_type.NGTCP2_CCERR_TYPE_TRANSPORT`, and + * :member:`ccerr->error_code <ngtcp2_ccerr.error_code>` is set to an + * error code inferred by |liberr| (see + * `ngtcp2_err_infer_quic_transport_error_code`). + */ +NGTCP2_EXTERN void ngtcp2_ccerr_set_liberr(ngtcp2_ccerr *ccerr, int liberr, + const uint8_t *reason, + size_t reasonlen); + +/** + * @function + * + * `ngtcp2_ccerr_set_tls_alert` sets :member:`ccerr->type + * <ngtcp2_ccerr.type>` to + * :enum:`ngtcp2_ccerr_type.NGTCP2_CCERR_TYPE_TRANSPORT`, and + * :member:`ccerr->error_code <ngtcp2_ccerr.error_code>` to bitwise-OR + * of :macro:`NGTCP2_CRYPTO_ERROR` and |tls_alert|. |reason| is the + * reason phrase of length |reasonlen|. This function does not make a + * copy of the reason phrase. + */ +NGTCP2_EXTERN void ngtcp2_ccerr_set_tls_alert(ngtcp2_ccerr *ccerr, + uint8_t tls_alert, + const uint8_t *reason, + size_t reasonlen); + +/** + * @function + * + * `ngtcp2_ccerr_set_application_error` sets :member:`ccerr->type + * <ngtcp2_ccerr.type>` to + * :enum:`ngtcp2_ccerr_type.NGTCP2_CCERR_TYPE_APPLICATION`, and + * :member:`ccerr->error_code <ngtcp2_ccerr.error_code>` to + * |error_code|. |reason| is the reason phrase of length |reasonlen|. + * This function does not make a copy of the reason phrase. + */ +NGTCP2_EXTERN void ngtcp2_ccerr_set_application_error(ngtcp2_ccerr *ccerr, + uint64_t error_code, + const uint8_t *reason, + size_t reasonlen); + +/** + * @function + * + * `ngtcp2_conn_write_connection_close` writes a packet which contains + * CONNECTION_CLOSE frame(s) (type 0x1c or 0x1d) in the buffer pointed + * by |dest| whose capacity is |destlen|. + * + * For client, |destlen| should be at least + * :macro:`NGTCP2_MAX_UDP_PAYLOAD_SIZE`. + * + * If |path| is not ``NULL``, this function stores the network path + * with which the packet should be sent. Each addr field must point + * to the buffer which should be at least + * sizeof(:type:`ngtcp2_sockaddr_union`) bytes long. The assignment + * might not be done if nothing is written to |dest|. + * + * If |pi| is not ``NULL``, this function stores packet metadata in it + * if it succeeds. The metadata includes ECN markings. + * + * If :member:`ccerr->type <ngtcp2_ccerr.type>` == + * :enum:`ngtcp2_ccerr_type.NGTCP2_CCERR_TYPE_TRANSPORT`, this + * function sends CONNECTION_CLOSE (type 0x1c) frame. If + * :member:`ccerr->type <ngtcp2_ccerr.type>` == + * :enum:`ngtcp2_ccerr_type.NGTCP2_CCERR_TYPE_APPLICATION`, it sends + * CONNECTION_CLOSE (type 0x1d) frame. Otherwise, it does not produce + * any data, and returns 0. + * + * |destlen| could be shorten by some factors (e.g., server side + * amplification limit). This function returns + * :macro:`NGTCP2_ERR_NOBUF` if the resulting buffer is too small even + * if the given buffer has enough space. + * + * This function must not be called from inside the callback + * functions. + * + * At the moment, successful call to this function makes connection + * close. We may change this behaviour in the future to allow + * graceful shutdown. + * + * This function returns the number of bytes written in |dest| if it + * succeeds, or one of the following negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory + * :macro:`NGTCP2_ERR_NOBUF` + * Buffer is too small + * :macro:`NGTCP2_ERR_INVALID_STATE` + * The current state does not allow sending CONNECTION_CLOSE + * frame. + * :macro:`NGTCP2_ERR_PKT_NUM_EXHAUSTED` + * Packet number is exhausted, and cannot send any more packet. + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` + * User callback failed + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_conn_write_connection_close_versioned( + ngtcp2_conn *conn, ngtcp2_path *path, int pkt_info_version, + ngtcp2_pkt_info *pi, uint8_t *dest, size_t destlen, const ngtcp2_ccerr *ccerr, + ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_conn_get_ccerr` returns the received connection close + * error. If no connection error is received, it returns + * :type:`ngtcp2_ccerr` that is initialized by `ngtcp2_ccerr_default`. + */ +NGTCP2_EXTERN const ngtcp2_ccerr *ngtcp2_conn_get_ccerr(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_is_local_stream` returns nonzero if |stream_id| + * denotes a locally initiated stream. + */ +NGTCP2_EXTERN int ngtcp2_conn_is_local_stream(ngtcp2_conn *conn, + int64_t stream_id); + +/** + * @function + * + * `ngtcp2_conn_is_server` returns nonzero if |conn| is initialized as + * server. + */ +NGTCP2_EXTERN int ngtcp2_conn_is_server(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_after_retry` returns nonzero if |conn| as a client has + * received Retry packet from server, and successfully validated it. + */ +NGTCP2_EXTERN int ngtcp2_conn_after_retry(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_set_stream_user_data` sets |stream_user_data| to the + * stream identified by |stream_id|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_STREAM_NOT_FOUND` + * Stream does not exist + */ +NGTCP2_EXTERN int ngtcp2_conn_set_stream_user_data(ngtcp2_conn *conn, + int64_t stream_id, + void *stream_user_data); + +/** + * @function + * + * `ngtcp2_conn_update_pkt_tx_time` sets the time instant of the next + * packet transmission to pace packets. This function must be called + * after (multiple invocation of) `ngtcp2_conn_writev_stream`. If + * packet aggregation (e.g., packet batching, GSO) is used, call this + * function after all aggregated datagrams are sent, which indicates + * multiple invocation of `ngtcp2_conn_writev_stream`. + */ +NGTCP2_EXTERN void ngtcp2_conn_update_pkt_tx_time(ngtcp2_conn *conn, + ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_conn_get_send_quantum` returns the maximum number of bytes + * that can be sent in one go without packet spacing. + */ +NGTCP2_EXTERN size_t ngtcp2_conn_get_send_quantum(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_stream_loss_count` returns the number of packets + * that contain STREAM frame for a stream identified by |stream_id| + * and are declared to be lost. The number may include the spurious + * losses. If no stream identified by |stream_id| is found, this + * function returns 0. + */ +NGTCP2_EXTERN size_t ngtcp2_conn_get_stream_loss_count(ngtcp2_conn *conn, + int64_t stream_id); + +/** + * @function + * + * `ngtcp2_strerror` returns the text representation of |liberr|. + * |liberr| must be one of ngtcp2 library error codes (which is + * defined as :macro:`NGTCP2_ERR_* <NGTCP2_ERR_INVALID_ARGUMENT>` + * macros). + */ +NGTCP2_EXTERN const char *ngtcp2_strerror(int liberr); + +/** + * @function + * + * `ngtcp2_err_is_fatal` returns nonzero if |liberr| is a fatal error. + * |liberr| must be one of ngtcp2 library error codes (which is + * defined as :macro:`NGTCP2_ERR_* <NGTCP2_ERR_INVALID_ARGUMENT>` + * macros). + */ +NGTCP2_EXTERN int ngtcp2_err_is_fatal(int liberr); + +/** + * @function + * + * `ngtcp2_err_infer_quic_transport_error_code` returns a QUIC + * transport error code which corresponds to |liberr|. |liberr| must + * be one of ngtcp2 library error codes (which is defined as + * :macro:`NGTCP2_ERR_* <NGTCP2_ERR_INVALID_ARGUMENT>` macros). + */ +NGTCP2_EXTERN uint64_t ngtcp2_err_infer_quic_transport_error_code(int liberr); + +/** + * @function + * + * `ngtcp2_addr_init` initializes |dest| with the given arguments and + * returns |dest|. + */ +NGTCP2_EXTERN ngtcp2_addr *ngtcp2_addr_init(ngtcp2_addr *dest, + const ngtcp2_sockaddr *addr, + ngtcp2_socklen addrlen); + +/** + * @function + * + * `ngtcp2_addr_copy_byte` copies |addr| of length |addrlen| into the + * buffer pointed by :member:`dest->addr <ngtcp2_addr.addr>`. + * :member:`dest->addrlen <ngtcp2_addr.addrlen>` is updated to have + * |addrlen|. This function assumes that :member:`dest->addr + * <ngtcp2_addr.addr>` points to a buffer which has a sufficient + * capacity to store the copy. + */ +NGTCP2_EXTERN void ngtcp2_addr_copy_byte(ngtcp2_addr *dest, + const ngtcp2_sockaddr *addr, + ngtcp2_socklen addrlen); + +/** + * @function + * + * `ngtcp2_path_storage_init` initializes |ps| with the given + * arguments. This function copies |local_addr| and |remote_addr|. + */ +NGTCP2_EXTERN void ngtcp2_path_storage_init(ngtcp2_path_storage *ps, + const ngtcp2_sockaddr *local_addr, + ngtcp2_socklen local_addrlen, + const ngtcp2_sockaddr *remote_addr, + ngtcp2_socklen remote_addrlen, + void *user_data); + +/** + * @function + * + * `ngtcp2_path_storage_zero` initializes |ps| with the zero length + * addresses. + */ +NGTCP2_EXTERN void ngtcp2_path_storage_zero(ngtcp2_path_storage *ps); + +/** + * @function + * + * `ngtcp2_settings_default` initializes |settings| with the default + * values. First this function fills |settings| with 0, and set the + * default value to the following fields: + * + * * :type:`cc_algo <ngtcp2_settings.cc_algo>` = + * :enum:`ngtcp2_cc_algo.NGTCP2_CC_ALGO_CUBIC` + * * :type:`initial_rtt <ngtcp2_settings.initial_rtt>` = + * :macro:`NGTCP2_DEFAULT_INITIAL_RTT` + * * :type:`ack_thresh <ngtcp2_settings.ack_thresh>` = 2 + * * :type:`max_tx_udp_payload_size + * <ngtcp2_settings.max_tx_udp_payload_size>` = 1452 + * * :type:`handshake_timeout <ngtcp2_settings.handshake_timeout>` = + * ``UINT64_MAX`` + */ +NGTCP2_EXTERN void ngtcp2_settings_default_versioned(int settings_version, + ngtcp2_settings *settings); + +/** + * @function + * + * `ngtcp2_transport_params_default` initializes |params| with the + * default values. First this function fills |params| with 0, and set + * the default value to the following fields: + * + * * :type:`max_udp_payload_size + * <ngtcp2_transport_params.max_udp_payload_size>` = + * :macro:`NGTCP2_DEFAULT_MAX_RECV_UDP_PAYLOAD_SIZE` + * * :type:`ack_delay_exponent + * <ngtcp2_transport_params.ack_delay_exponent>` = + * :macro:`NGTCP2_DEFAULT_ACK_DELAY_EXPONENT` + * * :type:`max_ack_delay <ngtcp2_transport_params.max_ack_delay>` = + * :macro:`NGTCP2_DEFAULT_MAX_ACK_DELAY` + * * :type:`active_connection_id_limit + * <ngtcp2_transport_params.active_connection_id_limit>` = + * :macro:`NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT` + */ +NGTCP2_EXTERN void +ngtcp2_transport_params_default_versioned(int transport_params_version, + ngtcp2_transport_params *params); + +/** + * @function + * + * `ngtcp2_mem_default` returns the default, system standard memory + * allocator. + */ +NGTCP2_EXTERN const ngtcp2_mem *ngtcp2_mem_default(void); + +/** + * @macrosection + * + * ngtcp2_info macros + */ + +/** + * @macro + * + * :macro:`NGTCP2_VERSION_AGE` is the age of :type:`ngtcp2_info` + */ +#define NGTCP2_VERSION_AGE 1 + +/** + * @struct + * + * :type:`ngtcp2_info` is what `ngtcp2_version` returns. It holds + * information about the particular ngtcp2 version. + */ +typedef struct ngtcp2_info { + /** + * :member:`age` is the age of this struct. This instance of ngtcp2 + * sets it to :macro:`NGTCP2_VERSION_AGE` but a future version may + * bump it and add more struct fields at the bottom + */ + int age; + /** + * :member:`version_num` is the :macro:`NGTCP2_VERSION_NUM` number + * (since :member:`age` ==1) + */ + int version_num; + /** + * :member:`version_str` points to the :macro:`NGTCP2_VERSION` + * string (since :member:`age` ==1) + */ + const char *version_str; + /* -------- the above fields all exist when age == 1 */ +} ngtcp2_info; + +/** + * @function + * + * `ngtcp2_version` returns a pointer to a :type:`ngtcp2_info` struct + * with version information about the run-time library in use. The + * |least_version| argument can be set to a 24 bit numerical value for + * the least accepted version number, and if the condition is not met, + * this function will return a ``NULL``. Pass in 0 to skip the + * version checking. + */ +NGTCP2_EXTERN const ngtcp2_info *ngtcp2_version(int least_version); + +/** + * @function + * + * `ngtcp2_is_bidi_stream` returns nonzero if |stream_id| denotes + * bidirectional stream. + */ +NGTCP2_EXTERN int ngtcp2_is_bidi_stream(int64_t stream_id); + +/** + * @function + * + * `ngtcp2_path_copy` copies |src| into |dest|. This function assumes + * that |dest| has enough buffer to store the deep copy of + * :member:`src->local <ngtcp2_path.local>` and :member:`src->remote + * <ngtcp2_path.remote>`. + */ +NGTCP2_EXTERN void ngtcp2_path_copy(ngtcp2_path *dest, const ngtcp2_path *src); + +/** + * @function + * + * `ngtcp2_path_eq` returns nonzero if |a| and |b| shares the same + * local and remote addresses. + */ +NGTCP2_EXTERN int ngtcp2_path_eq(const ngtcp2_path *a, const ngtcp2_path *b); + +/** + * @function + * + * `ngtcp2_is_supported_version` returns nonzero if the library + * supports QUIC version |version|. + */ +NGTCP2_EXTERN int ngtcp2_is_supported_version(uint32_t version); + +/** + * @function + * + * `ngtcp2_is_reserved_version` returns nonzero if |version| is a + * reserved version. + */ +NGTCP2_EXTERN int ngtcp2_is_reserved_version(uint32_t version); + +/** + * @function + * + * `ngtcp2_select_version` selects and returns a version from the + * version set |offered_versions| of |offered_versionslen| elements. + * |preferred_versions| of |preferred_versionslen| elements specifies + * the preference of versions, which is sorted in the order of + * preference. All versions included in |preferred_versions| must be + * supported by the library, that is, passing any version in the array + * to `ngtcp2_is_supported_version` must return nonzero. This + * function is intended to be used by client when it receives Version + * Negotiation packet. If no version is selected, this function + * returns 0. + */ +NGTCP2_EXTERN uint32_t ngtcp2_select_version(const uint32_t *preferred_versions, + size_t preferred_versionslen, + const uint32_t *offered_versions, + size_t offered_versionslen); + +/* + * Versioned function wrappers + */ + +/* + * `ngtcp2_conn_read_pkt` is a wrapper around + * `ngtcp2_conn_read_pkt_versioned` to set the correct struct version. + */ +#define ngtcp2_conn_read_pkt(CONN, PATH, PI, PKT, PKTLEN, TS) \ + ngtcp2_conn_read_pkt_versioned((CONN), (PATH), NGTCP2_PKT_INFO_VERSION, \ + (PI), (PKT), (PKTLEN), (TS)) + +/* + * `ngtcp2_conn_write_pkt` is a wrapper around + * `ngtcp2_conn_write_pkt_versioned` to set the correct struct + * version. + */ +#define ngtcp2_conn_write_pkt(CONN, PATH, PI, DEST, DESTLEN, TS) \ + ngtcp2_conn_write_pkt_versioned((CONN), (PATH), NGTCP2_PKT_INFO_VERSION, \ + (PI), (DEST), (DESTLEN), (TS)) + +/* + * `ngtcp2_conn_write_stream` is a wrapper around + * `ngtcp2_conn_write_stream_versioned` to set the correct struct + * version. + */ +#define ngtcp2_conn_write_stream(CONN, PATH, PI, DEST, DESTLEN, PDATALEN, \ + FLAGS, STREAM_ID, DATA, DATALEN, TS) \ + ngtcp2_conn_write_stream_versioned( \ + (CONN), (PATH), NGTCP2_PKT_INFO_VERSION, (PI), (DEST), (DESTLEN), \ + (PDATALEN), (FLAGS), (STREAM_ID), (DATA), (DATALEN), (TS)) + +/* + * `ngtcp2_conn_writev_stream` is a wrapper around + * `ngtcp2_conn_writev_stream_versioned` to set the correct struct + * version. + */ +#define ngtcp2_conn_writev_stream(CONN, PATH, PI, DEST, DESTLEN, PDATALEN, \ + FLAGS, STREAM_ID, DATAV, DATAVCNT, TS) \ + ngtcp2_conn_writev_stream_versioned( \ + (CONN), (PATH), NGTCP2_PKT_INFO_VERSION, (PI), (DEST), (DESTLEN), \ + (PDATALEN), (FLAGS), (STREAM_ID), (DATAV), (DATAVCNT), (TS)) + +/* + * `ngtcp2_conn_write_datagram` is a wrapper around + * `ngtcp2_conn_write_datagram_versioned` to set the correct struct + * version. + */ +#define ngtcp2_conn_write_datagram(CONN, PATH, PI, DEST, DESTLEN, PACCEPTED, \ + FLAGS, DGRAM_ID, DATA, DATALEN, TS) \ + ngtcp2_conn_write_datagram_versioned( \ + (CONN), (PATH), NGTCP2_PKT_INFO_VERSION, (PI), (DEST), (DESTLEN), \ + (PACCEPTED), (FLAGS), (DGRAM_ID), (DATA), (DATALEN), (TS)) + +/* + * `ngtcp2_conn_writev_datagram` is a wrapper around + * `ngtcp2_conn_writev_datagram_versioned` to set the correct struct + * version. + */ +#define ngtcp2_conn_writev_datagram(CONN, PATH, PI, DEST, DESTLEN, PACCEPTED, \ + FLAGS, DGRAM_ID, DATAV, DATAVCNT, TS) \ + ngtcp2_conn_writev_datagram_versioned( \ + (CONN), (PATH), NGTCP2_PKT_INFO_VERSION, (PI), (DEST), (DESTLEN), \ + (PACCEPTED), (FLAGS), (DGRAM_ID), (DATAV), (DATAVCNT), (TS)) + +/* + * `ngtcp2_conn_write_connection_close` is a wrapper around + * `ngtcp2_conn_write_connection_close_versioned` to set the correct + * struct version. + */ +#define ngtcp2_conn_write_connection_close(CONN, PATH, PI, DEST, DESTLEN, \ + CCERR, TS) \ + ngtcp2_conn_write_connection_close_versioned( \ + (CONN), (PATH), NGTCP2_PKT_INFO_VERSION, (PI), (DEST), (DESTLEN), (CCERR), \ + (TS)) + +/* + * `ngtcp2_transport_params_encode` is a wrapper around + * `ngtcp2_transport_params_encode_versioned` to set the correct + * struct version. + */ +#define ngtcp2_transport_params_encode(DEST, DESTLEN, PARAMS) \ + ngtcp2_transport_params_encode_versioned( \ + (DEST), (DESTLEN), NGTCP2_TRANSPORT_PARAMS_VERSION, (PARAMS)) + +/* + * `ngtcp2_transport_params_decode` is a wrapper around + * `ngtcp2_transport_params_decode_versioned` to set the correct + * struct version. + */ +#define ngtcp2_transport_params_decode(PARAMS, DATA, DATALEN) \ + ngtcp2_transport_params_decode_versioned(NGTCP2_TRANSPORT_PARAMS_VERSION, \ + (PARAMS), (DATA), (DATALEN)) + +/* + * `ngtcp2_conn_client_new` is a wrapper around + * `ngtcp2_conn_client_new_versioned` to set the correct struct + * version. + */ +#define ngtcp2_conn_client_new(PCONN, DCID, SCID, PATH, VERSION, CALLBACKS, \ + SETTINGS, PARAMS, MEM, USER_DATA) \ + ngtcp2_conn_client_new_versioned( \ + (PCONN), (DCID), (SCID), (PATH), (VERSION), NGTCP2_CALLBACKS_VERSION, \ + (CALLBACKS), NGTCP2_SETTINGS_VERSION, (SETTINGS), \ + NGTCP2_TRANSPORT_PARAMS_VERSION, (PARAMS), (MEM), (USER_DATA)) + +/* + * `ngtcp2_conn_server_new` is a wrapper around + * `ngtcp2_conn_server_new_versioned` to set the correct struct + * version. + */ +#define ngtcp2_conn_server_new(PCONN, DCID, SCID, PATH, VERSION, CALLBACKS, \ + SETTINGS, PARAMS, MEM, USER_DATA) \ + ngtcp2_conn_server_new_versioned( \ + (PCONN), (DCID), (SCID), (PATH), (VERSION), NGTCP2_CALLBACKS_VERSION, \ + (CALLBACKS), NGTCP2_SETTINGS_VERSION, (SETTINGS), \ + NGTCP2_TRANSPORT_PARAMS_VERSION, (PARAMS), (MEM), (USER_DATA)) + +/* + * `ngtcp2_conn_set_local_transport_params` is a wrapper around + * `ngtcp2_conn_set_local_transport_params_versioned` to set the + * correct struct version. + */ +#define ngtcp2_conn_set_local_transport_params(CONN, PARAMS) \ + ngtcp2_conn_set_local_transport_params_versioned( \ + (CONN), NGTCP2_TRANSPORT_PARAMS_VERSION, (PARAMS)) + +/* + * `ngtcp2_transport_params_default` is a wrapper around + * `ngtcp2_transport_params_default_versioned` to set the correct + * struct version. + */ +#define ngtcp2_transport_params_default(PARAMS) \ + ngtcp2_transport_params_default_versioned(NGTCP2_TRANSPORT_PARAMS_VERSION, \ + (PARAMS)) + +/* + * `ngtcp2_conn_get_conn_info` is a wrapper around + * `ngtcp2_conn_get_conn_info_versioned` to set the correct struct + * version. + */ +#define ngtcp2_conn_get_conn_info(CONN, CINFO) \ + ngtcp2_conn_get_conn_info_versioned((CONN), NGTCP2_CONN_INFO_VERSION, (CINFO)) + +/* + * `ngtcp2_settings_default` is a wrapper around + * `ngtcp2_settings_default_versioned` to set the correct struct + * version. + */ +#define ngtcp2_settings_default(SETTINGS) \ + ngtcp2_settings_default_versioned(NGTCP2_SETTINGS_VERSION, (SETTINGS)) + +#ifdef _MSC_VER +# pragma warning(pop) +#endif /* defined(_MSC_VER) */ + +#ifdef __cplusplus +} +#endif /* defined(__cplusplus) */ + +#endif /* !defined(NGTCP2_H) */ diff --git a/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2_crypto.h b/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2_crypto.h new file mode 100644 index 0000000000..5b8626191d --- /dev/null +++ b/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2_crypto.h @@ -0,0 +1,838 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_CRYPTO_H +#define NGTCP2_CRYPTO_H + +#include <ngtcp2/ngtcp2.h> + +#ifdef __cplusplus +extern "C" { +#endif /* defined(__cplusplus) */ + +#ifdef WIN32 +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif /* !defined(WIN32_LEAN_AND_MEAN) */ +# include <ws2tcpip.h> +#endif /* defined(WIN32) */ + +/** + * @function + * + * `ngtcp2_crypto_ctx_tls` initializes |ctx| by extracting negotiated + * ciphers and message digests from native TLS session + * |tls_native_handle|. This is used for encrypting/decrypting + * Handshake and 1-RTT packets. If it is unable to obtain necessary + * data from |tls_native_handle|, this function returns NULL. + * + * If libngtcp2_crypto_quictls is linked, |tls_native_handle| must be + * a pointer to SSL object. + */ +NGTCP2_EXTERN ngtcp2_crypto_ctx *ngtcp2_crypto_ctx_tls(ngtcp2_crypto_ctx *ctx, + void *tls_native_handle); + +/** + * @function + * + * `ngtcp2_crypto_ctx_tls_early` initializes |ctx| by extracting early + * ciphers and message digests from native TLS session + * |tls_native_handle|. This is used for encrypting/decrypting 0-RTT + * packets. If it is unable to obtain necessary data from + * |tls_native_handle|, this function returns NULL. + * + * If libngtcp2_crypto_quictls is linked, |tls_native_handle| must be + * a pointer to SSL object. + */ +NGTCP2_EXTERN ngtcp2_crypto_ctx * +ngtcp2_crypto_ctx_tls_early(ngtcp2_crypto_ctx *ctx, void *tls_native_handle); + +/** + * @function + * + * `ngtcp2_crypto_md_init` initializes |md| with the provided + * |md_native_handle| which is an underlying message digest object. + * + * If libngtcp2_crypto_quictls is linked, |md_native_handle| must be a + * pointer to EVP_MD. + * + * If libngtcp2_crypto_gnutls is linked, |md_native_handle| must be + * gnutls_mac_algorithm_t casted to ``void *``. + * + * If libngtcp2_crypto_boringssl is linked, |md_native_handle| must be + * a pointer to EVP_MD. + */ +NGTCP2_EXTERN ngtcp2_crypto_md *ngtcp2_crypto_md_init(ngtcp2_crypto_md *md, + void *md_native_handle); + +/** + * @function + * + * `ngtcp2_crypto_md_hashlen` returns the length of |md| output. + */ +NGTCP2_EXTERN size_t ngtcp2_crypto_md_hashlen(const ngtcp2_crypto_md *md); + +/** + * @function + * + * `ngtcp2_crypto_aead_keylen` returns the length of key for |aead|. + */ +NGTCP2_EXTERN size_t ngtcp2_crypto_aead_keylen(const ngtcp2_crypto_aead *aead); + +/** + * @function + * + * `ngtcp2_crypto_aead_noncelen` returns the length of nonce for + * |aead|. + */ +NGTCP2_EXTERN size_t +ngtcp2_crypto_aead_noncelen(const ngtcp2_crypto_aead *aead); + +/** + * @function + * + * `ngtcp2_crypto_hkdf_extract` performs HKDF extract operation. + * + * The length of output is `ngtcp2_crypto_md_hashlen(md) + * <ngtcp2_crypto_md_hashlen>`. The output is stored in the buffer + * pointed by |dest|. The caller is responsible to specify the buffer + * that has enough capacity to store the output. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int +ngtcp2_crypto_hkdf_extract(uint8_t *dest, const ngtcp2_crypto_md *md, + const uint8_t *secret, size_t secretlen, + const uint8_t *salt, size_t saltlen); + +/** + * @function + * + * `ngtcp2_crypto_hkdf_expand` performs HKDF expand operation. The + * result is |destlen| bytes long, and is stored in the buffer pointed + * by |dest|. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int ngtcp2_crypto_hkdf_expand( + uint8_t *dest, size_t destlen, const ngtcp2_crypto_md *md, + const uint8_t *secret, size_t secretlen, const uint8_t *info, size_t infolen); + +/** + * @function + * + * `ngtcp2_crypto_hkdf` performs HKDF operation. The result is + * |destlen| bytes long, and is stored in the buffer pointed by + * |dest|. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int ngtcp2_crypto_hkdf(uint8_t *dest, size_t destlen, + const ngtcp2_crypto_md *md, + const uint8_t *secret, size_t secretlen, + const uint8_t *salt, size_t saltlen, + const uint8_t *info, size_t infolen); + +/** + * @function + * + * `ngtcp2_crypto_packet_protection_ivlen` returns the length of IV + * used to encrypt QUIC packet. + */ +NGTCP2_EXTERN size_t +ngtcp2_crypto_packet_protection_ivlen(const ngtcp2_crypto_aead *aead); + +/** + * @function + * + * `ngtcp2_crypto_encrypt` encrypts |plaintext| of length + * |plaintextlen| and writes the ciphertext into the buffer pointed by + * |dest|. The length of ciphertext is |plaintextlen| + + * :member:`aead->max_overhead <ngtcp2_crypto_aead.max_overhead>` + * bytes long. |dest| must have enough capacity to store the + * ciphertext. |dest| and |plaintext| may point to the same buffer. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int ngtcp2_crypto_encrypt(uint8_t *dest, + const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *plaintext, + size_t plaintextlen, + const uint8_t *nonce, size_t noncelen, + const uint8_t *aad, size_t aadlen); + +/** + * @function + * + * `ngtcp2_crypto_encrypt_cb` is a wrapper function around + * `ngtcp2_crypto_encrypt`. It can be directly passed to + * :member:`ngtcp2_callbacks.encrypt` field. + * + * This function returns 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE`. + */ +NGTCP2_EXTERN int +ngtcp2_crypto_encrypt_cb(uint8_t *dest, const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *plaintext, size_t plaintextlen, + const uint8_t *nonce, size_t noncelen, + const uint8_t *aad, size_t aadlen); + +/** + * @function + * + * `ngtcp2_crypto_decrypt` decrypts |ciphertext| of length + * |ciphertextlen| and writes the plaintext into the buffer pointed by + * |dest|. The length of plaintext is |ciphertextlen| - + * :member:`aead->max_overhead <ngtcp2_crypto_aead.max_overhead>` + * bytes long. |dest| must have enough capacity to store the + * plaintext. |dest| and |ciphertext| may point to the same buffer. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int ngtcp2_crypto_decrypt(uint8_t *dest, + const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *ciphertext, + size_t ciphertextlen, + const uint8_t *nonce, size_t noncelen, + const uint8_t *aad, size_t aadlen); + +/** + * @function + * + * `ngtcp2_crypto_decrypt_cb` is a wrapper function around + * `ngtcp2_crypto_decrypt`. It can be directly passed to + * :member:`ngtcp2_callbacks.decrypt` field. + * + * This function returns 0 if it succeeds, or + * :macro:`NGTCP2_ERR_TLS_DECRYPT`. + */ +NGTCP2_EXTERN int +ngtcp2_crypto_decrypt_cb(uint8_t *dest, const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *ciphertext, size_t ciphertextlen, + const uint8_t *nonce, size_t noncelen, + const uint8_t *aad, size_t aadlen); + +/** + * @function + * + * `ngtcp2_crypto_hp_mask` generates a mask which is used in packet + * header encryption. The mask is written to the buffer pointed by + * |dest|. The sample is passed as |sample| which is + * :macro:`NGTCP2_HP_SAMPLELEN` bytes long. The length of mask must + * be at least :macro:`NGTCP2_HP_MASKLEN`. The library only uses the + * first :macro:`NGTCP2_HP_MASKLEN` bytes of the produced mask. The + * buffer pointed by |dest| must have at least + * :macro:`NGTCP2_HP_SAMPLELEN` bytes available. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int ngtcp2_crypto_hp_mask(uint8_t *dest, + const ngtcp2_crypto_cipher *hp, + const ngtcp2_crypto_cipher_ctx *hp_ctx, + const uint8_t *sample); + +/** + * @function + * + * `ngtcp2_crypto_hp_mask_cb` is a wrapper function around + * `ngtcp2_crypto_hp_mask`. It can be directly passed to + * :member:`ngtcp2_callbacks.hp_mask` field. + * + * This function returns 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE`. + */ +NGTCP2_EXTERN int +ngtcp2_crypto_hp_mask_cb(uint8_t *dest, const ngtcp2_crypto_cipher *hp, + const ngtcp2_crypto_cipher_ctx *hp_ctx, + const uint8_t *sample); + +/** + * @function + * + * `ngtcp2_crypto_derive_and_install_rx_key` derives the decryption + * keying materials from |secret|, and installs them to |conn|. + * + * If |key| is not NULL, the derived packet protection key is written + * to the buffer pointed by |key|. If |iv| is not NULL, the derived + * packet protection IV is written to the buffer pointed by |iv|. If + * |hp| is not NULL, the derived header protection key is written to + * the buffer pointed by |hp|. + * + * |secretlen| specifies the length of |secret|. + * + * The length of packet protection key and header protection key is + * `ngtcp2_crypto_aead_keylen(ctx->aead) <ngtcp2_crypto_aead_keylen>`, + * and the length of packet protection IV is + * `ngtcp2_crypto_packet_protection_ivlen(ctx->aead) + * <ngtcp2_crypto_packet_protection_ivlen>` where ctx is obtained by + * `ngtcp2_crypto_ctx_tls` (or `ngtcp2_crypto_ctx_tls_early` if + * |level| == + * :enum:`ngtcp2_encryption_level.NGTCP2_ENCRYPTION_LEVEL_0RTT`). + * + * In the first call of this function, it calls + * `ngtcp2_conn_set_crypto_ctx` (or `ngtcp2_conn_set_early_crypto_ctx` + * if |level| == + * :enum:`ngtcp2_encryption_level.NGTCP2_ENCRYPTION_LEVEL_0RTT`) to + * set negotiated AEAD and message digest algorithm. After the + * successful call of this function, application can use + * `ngtcp2_conn_get_crypto_ctx` (or `ngtcp2_conn_get_early_crypto_ctx` + * if |level| == + * :enum:`ngtcp2_encryption_level.NGTCP2_ENCRYPTION_LEVEL_0RTT`) to + * get :type:`ngtcp2_crypto_ctx`. + * + * If |conn| is initialized as client, and |level| is + * :enum:`ngtcp2_encryption_level.NGTCP2_ENCRYPTION_LEVEL_1RTT`, this + * function retrieves a remote QUIC transport parameters extension + * from an object obtained by `ngtcp2_conn_get_tls_native_handle`, and + * sets it to |conn| by calling + * `ngtcp2_conn_decode_and_set_remote_transport_params`. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int ngtcp2_crypto_derive_and_install_rx_key( + ngtcp2_conn *conn, uint8_t *key, uint8_t *iv, uint8_t *hp, + ngtcp2_encryption_level level, const uint8_t *secret, size_t secretlen); + +/** + * @function + * + * `ngtcp2_crypto_derive_and_install_tx_key` derives the encryption + * keying materials from |secret|, and installs new keys to |conn|. + * + * If |key| is not NULL, the derived packet protection key is written + * to the buffer pointed by |key|. If |iv| is not NULL, the derived + * packet protection IV is written to the buffer pointed by |iv|. If + * |hp| is not NULL, the derived header protection key is written to + * the buffer pointed by |hp|. + * + * |secretlen| specifies the length of |secret|. + * + * The length of packet protection key and header protection key is + * `ngtcp2_crypto_aead_keylen(ctx->aead) <ngtcp2_crypto_aead_keylen>`, + * and the length of packet protection IV is + * `ngtcp2_crypto_packet_protection_ivlen(ctx->aead) + * <ngtcp2_crypto_packet_protection_ivlen>` where ctx is obtained by + * `ngtcp2_crypto_ctx_tls` (or `ngtcp2_crypto_ctx_tls_early` if + * |level| == + * :enum:`ngtcp2_encryption_level.NGTCP2_ENCRYPTION_LEVEL_0RTT`). + * + * In the first call of this function, it calls + * `ngtcp2_conn_set_crypto_ctx` (or `ngtcp2_conn_set_early_crypto_ctx` + * if |level| == + * :enum:`ngtcp2_encryption_level.NGTCP2_ENCRYPTION_LEVEL_0RTT`) to + * set negotiated AEAD and message digest algorithm. After the + * successful call of this function, application can use + * `ngtcp2_conn_get_crypto_ctx` (or `ngtcp2_conn_get_early_crypto_ctx` + * if |level| == + * :enum:`ngtcp2_encryption_level.NGTCP2_ENCRYPTION_LEVEL_0RTT`) to + * get :type:`ngtcp2_crypto_ctx`. + * + * If |conn| is initialized as server, and |level| is + * :enum:`ngtcp2_encryption_level.NGTCP2_ENCRYPTION_LEVEL_1RTT`, this + * function retrieves a remote QUIC transport parameters extension + * from an object obtained by `ngtcp2_conn_get_tls_native_handle`, and + * sets it to |conn| by calling + * `ngtcp2_conn_decode_and_set_remote_transport_params`. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int ngtcp2_crypto_derive_and_install_tx_key( + ngtcp2_conn *conn, uint8_t *key, uint8_t *iv, uint8_t *hp, + ngtcp2_encryption_level level, const uint8_t *secret, size_t secretlen); + +/** + * @function + * + * `ngtcp2_crypto_update_key` updates traffic keying materials. + * + * The new decryption traffic secret is written to the buffer pointed + * by |rx_secret|. The length of secret is |secretlen| bytes, and + * |rx_secret| must point to the buffer which has enough capacity. + * + * The new encryption traffic secret is written to the buffer pointed + * by |tx_secret|. The length of secret is |secretlen| bytes, and + * |tx_secret| must point to the buffer which has enough capacity. + * + * The derived decryption packet protection key is written to the + * buffer pointed by |rx_key|. The derived decryption packet + * protection IV is written to the buffer pointed by |rx_iv|. + * |rx_aead_ctx| is initialized with the derived key and IV. + * + * The derived encryption packet protection key is written to the + * buffer pointed by |tx_key|. The derived encryption packet + * protection IV is written to the buffer pointed by |tx_iv|. + * |tx_aead_ctx| is initialized with the derived key and IV. + * + * |current_rx_secret| and |current_tx_secret| are the current + * decryption and encryption traffic secrets respectively. They share + * the same length with |rx_secret| and |tx_secret|. + * + * The length of packet protection key and header protection key is + * `ngtcp2_crypto_aead_keylen(ctx->aead) <ngtcp2_crypto_aead_keylen>`, + * and the length of packet protection IV is + * `ngtcp2_crypto_packet_protection_ivlen(ctx->aead) + * <ngtcp2_crypto_packet_protection_ivlen>` where ctx is obtained by + * `ngtcp2_crypto_ctx_tls`. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int ngtcp2_crypto_update_key( + ngtcp2_conn *conn, uint8_t *rx_secret, uint8_t *tx_secret, + ngtcp2_crypto_aead_ctx *rx_aead_ctx, uint8_t *rx_key, uint8_t *rx_iv, + ngtcp2_crypto_aead_ctx *tx_aead_ctx, uint8_t *tx_key, uint8_t *tx_iv, + const uint8_t *current_rx_secret, const uint8_t *current_tx_secret, + size_t secretlen); + +/** + * @function + * + * `ngtcp2_crypto_update_key_cb` is a wrapper function around + * `ngtcp2_crypto_update_key`. It can be directly passed to + * :member:`ngtcp2_callbacks.update_key` field. + * + * This function returns 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE`. + */ +NGTCP2_EXTERN int ngtcp2_crypto_update_key_cb( + ngtcp2_conn *conn, uint8_t *rx_secret, uint8_t *tx_secret, + ngtcp2_crypto_aead_ctx *rx_aead_ctx, uint8_t *rx_iv, + ngtcp2_crypto_aead_ctx *tx_aead_ctx, uint8_t *tx_iv, + const uint8_t *current_rx_secret, const uint8_t *current_tx_secret, + size_t secretlen, void *user_data); + +/** + * @function + * + * `ngtcp2_crypto_client_initial_cb` installs initial secrets and + * encryption keys, and sets QUIC transport parameters. + * + * This function can be directly passed to + * :member:`ngtcp2_callbacks.client_initial` field. It is only used + * by client. + * + * This function returns 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE`. + */ +NGTCP2_EXTERN int ngtcp2_crypto_client_initial_cb(ngtcp2_conn *conn, + void *user_data); + +/** + * @function + * + * `ngtcp2_crypto_recv_retry_cb` re-installs initial secrets in + * response to incoming Retry packet. + * + * This function can be directly passed to + * :member:`ngtcp2_callbacks.recv_retry` field. It is only used by + * client. + * + * This function returns 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE`. + */ +NGTCP2_EXTERN int ngtcp2_crypto_recv_retry_cb(ngtcp2_conn *conn, + const ngtcp2_pkt_hd *hd, + void *user_data); + +/** + * @function + * + * `ngtcp2_crypto_recv_client_initial_cb` installs initial secrets in + * response to an incoming Initial packet from client, and sets QUIC + * transport parameters. + * + * This function can be directly passed to + * :member:`ngtcp2_callbacks.recv_client_initial` field. It is only + * used by server. + * + * This function returns 0 if it succeeds, or + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE`. + */ +NGTCP2_EXTERN int ngtcp2_crypto_recv_client_initial_cb(ngtcp2_conn *conn, + const ngtcp2_cid *dcid, + void *user_data); + +/** + * @function + * + * `ngtcp2_crypto_read_write_crypto_data` reads CRYPTO data |data| of + * length |datalen| in an encryption level |encryption_level|, and may + * feed outgoing CRYPTO data to |conn|. This function can drive + * handshake. This function can be also used after handshake + * completes. It is allowed to call this function with |datalen| == + * 0. In this case, no additional read operation is done. + * + * This function returns 0 if it succeeds, or a negative error code. + * The generic error code is -1 if a specific error code is not + * suitable. The error codes less than -10000 are specific to + * underlying TLS implementation. For quictls, the error codes are + * defined in *ngtcp2_crypto_quictls.h*. + */ +NGTCP2_EXTERN int +ngtcp2_crypto_read_write_crypto_data(ngtcp2_conn *conn, + ngtcp2_encryption_level encryption_level, + const uint8_t *data, size_t datalen); + +/** + * @function + * + * `ngtcp2_crypto_recv_crypto_data_cb` is a wrapper function around + * `ngtcp2_crypto_read_write_crypto_data`. It can be directly passed + * to :member:`ngtcp2_callbacks.recv_crypto_data` field. + * + * If this function is used, the TLS implementation specific error + * codes described in `ngtcp2_crypto_read_write_crypto_data` are + * treated as if it returns -1. Do not use this function if an + * application wishes to use the TLS implementation specific error + * codes. + */ +NGTCP2_EXTERN int ngtcp2_crypto_recv_crypto_data_cb( + ngtcp2_conn *conn, ngtcp2_encryption_level encryption_level, uint64_t offset, + const uint8_t *data, size_t datalen, void *user_data); + +/** + * @function + * + * `ngtcp2_crypto_generate_stateless_reset_token` generates a + * stateless reset token using HKDF extraction using the given |cid| + * and |secret| as input. The token will be written to the buffer + * pointed by |token|, and it must have a capacity of at least + * :macro:`NGTCP2_STATELESS_RESET_TOKENLEN` bytes. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int ngtcp2_crypto_generate_stateless_reset_token( + uint8_t *token, const uint8_t *secret, size_t secretlen, + const ngtcp2_cid *cid); + +/** + * @macro + * + * :macro:`NGTCP2_CRYPTO_TOKEN_RAND_DATALEN` is the length of random + * data added to a token generated by + * `ngtcp2_crypto_generate_retry_token` or + * `ngtcp2_crypto_generate_regular_token`. + */ +#define NGTCP2_CRYPTO_TOKEN_RAND_DATALEN 16 + +/** + * @macro + * + * :macro:`NGTCP2_CRYPTO_TOKEN_MAGIC_RETRY` is the magic byte for + * Retry token generated by `ngtcp2_crypto_generate_retry_token`. + */ +#define NGTCP2_CRYPTO_TOKEN_MAGIC_RETRY 0xb6 + +/** + * @macro + * + * :macro:`NGTCP2_CRYPTO_TOKEN_MAGIC_REGULAR` is the magic byte for a + * token generated by `ngtcp2_crypto_generate_regular_token`. + */ +#define NGTCP2_CRYPTO_TOKEN_MAGIC_REGULAR 0x36 + +/** + * @macro + * + * :macro:`NGTCP2_CRYPTO_MAX_RETRY_TOKENLEN` is the maximum length of + * a token generated by `ngtcp2_crypto_generate_retry_token`. + */ +#define NGTCP2_CRYPTO_MAX_RETRY_TOKENLEN \ + (/* magic = */ 1 + /* cid len = */ 1 + NGTCP2_MAX_CIDLEN + \ + sizeof(ngtcp2_tstamp) + /* aead tag = */ 16 + \ + NGTCP2_CRYPTO_TOKEN_RAND_DATALEN) + +/** + * @macro + * + * :macro:`NGTCP2_CRYPTO_MAX_REGULAR_TOKENLEN` is the maximum length + * of a token generated by `ngtcp2_crypto_generate_regular_token`. + */ +#define NGTCP2_CRYPTO_MAX_REGULAR_TOKENLEN \ + (/* magic = */ 1 + sizeof(ngtcp2_tstamp) + /* aead tag = */ 16 + \ + NGTCP2_CRYPTO_TOKEN_RAND_DATALEN) + +/** + * @function + * + * `ngtcp2_crypto_generate_retry_token` generates a token in the + * buffer pointed by |token| that is sent with Retry packet. The + * buffer pointed by |token| must have at least + * :macro:`NGTCP2_CRYPTO_MAX_RETRY_TOKENLEN` bytes long. The + * successfully generated token starts with + * :macro:`NGTCP2_CRYPTO_TOKEN_MAGIC_RETRY`. |secret| of length + * |secretlen| is a keying material to generate keys to encrypt the + * token. |version| is QUIC version. |remote_addr| of length + * |remote_addrlen| is an address of client. |retry_scid| is a Source + * Connection ID chosen by server, and set in Retry packet. |odcid| + * is a Destination Connection ID in Initial packet sent by client. + * |ts| is the timestamp when the token is generated. + * + * This function returns the length of generated token if it succeeds, + * or -1. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_crypto_generate_retry_token( + uint8_t *token, const uint8_t *secret, size_t secretlen, uint32_t version, + const ngtcp2_sockaddr *remote_addr, ngtcp2_socklen remote_addrlen, + const ngtcp2_cid *retry_scid, const ngtcp2_cid *odcid, ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_crypto_verify_retry_token` verifies Retry token stored in + * the buffer pointed by |token| of length |tokenlen|. |secret| of + * length |secretlen| is a keying material to generate keys to decrypt + * the token. |version| is QUIC version of the Initial packet that + * contains this token. |remote_addr| of length |remote_addrlen| is + * an address of client. |dcid| is a Destination Connection ID in + * Initial packet sent by client. |timeout| is the period during + * which the token is valid. |ts| is the current timestamp. When + * validation succeeds, the extracted Destination Connection ID (which + * is the Destination Connection ID in Initial packet sent by client + * that triggered Retry packet) is stored in the buffer pointed by + * |odcid|. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int ngtcp2_crypto_verify_retry_token( + ngtcp2_cid *odcid, const uint8_t *token, size_t tokenlen, + const uint8_t *secret, size_t secretlen, uint32_t version, + const ngtcp2_sockaddr *remote_addr, ngtcp2_socklen remote_addrlen, + const ngtcp2_cid *dcid, ngtcp2_duration timeout, ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_crypto_generate_regular_token` generates a token in the + * buffer pointed by |token| that is sent with NEW_TOKEN frame. The + * buffer pointed by |token| must have at least + * :macro:`NGTCP2_CRYPTO_MAX_REGULAR_TOKENLEN` bytes long. The + * successfully generated token starts with + * :macro:`NGTCP2_CRYPTO_TOKEN_MAGIC_REGULAR`. |secret| of length + * |secretlen| is a keying material to generate keys to encrypt the + * token. |remote_addr| of length |remote_addrlen| is an address of + * client. |ts| is the timestamp when the token is generated. + * + * This function returns the length of generated token if it succeeds, + * or -1. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_crypto_generate_regular_token( + uint8_t *token, const uint8_t *secret, size_t secretlen, + const ngtcp2_sockaddr *remote_addr, ngtcp2_socklen remote_addrlen, + ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_crypto_verify_regular_token` verifies a regular token + * stored in the buffer pointed by |token| of length |tokenlen|. + * |secret| of length |secretlen| is a keying material to generate + * keys to decrypt the token. |remote_addr| of length + * |remote_addrlen| is an address of client. |timeout| is the period + * during which the token is valid. |ts| is the current timestamp. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int ngtcp2_crypto_verify_regular_token( + const uint8_t *token, size_t tokenlen, const uint8_t *secret, + size_t secretlen, const ngtcp2_sockaddr *remote_addr, + ngtcp2_socklen remote_addrlen, ngtcp2_duration timeout, ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_crypto_write_connection_close` writes Initial packet + * containing CONNECTION_CLOSE with the given |error_code| and the + * optional |reason| of length |reasonlen| to the buffer pointed by + * |dest| of length |destlen|. This function is designed for server + * to close connection without committing the state when validating + * Retry token fails. This function must not be used by client. The + * |dcid| must be the Source Connection ID in Initial packet from + * client. The |scid| must be the Destination Connection ID in + * Initial packet from client. |scid| is used to derive initial + * keying materials. + * + * This function wraps around `ngtcp2_pkt_write_connection_close` for + * easier use. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_crypto_write_connection_close( + uint8_t *dest, size_t destlen, uint32_t version, const ngtcp2_cid *dcid, + const ngtcp2_cid *scid, uint64_t error_code, const uint8_t *reason, + size_t reasonlen); + +/** + * @function + * + * `ngtcp2_crypto_write_retry` writes Retry packet to the buffer + * pointed by |dest| of length |destlen|. |dcid| is the Connection ID + * which appeared in a packet as a Source Connection ID sent by + * client. |scid| is a server chosen Source Connection ID. |odcid| + * specifies Original Destination Connection ID which appeared in a + * packet as a Destination Connection ID sent by client. |token| + * specifies Retry Token, and |tokenlen| specifies its length. + * + * This function wraps around `ngtcp2_pkt_write_retry` for easier use. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN ngtcp2_ssize ngtcp2_crypto_write_retry( + uint8_t *dest, size_t destlen, uint32_t version, const ngtcp2_cid *dcid, + const ngtcp2_cid *scid, const ngtcp2_cid *odcid, const uint8_t *token, + size_t tokenlen); + +/** + * @function + * + * `ngtcp2_crypto_aead_ctx_encrypt_init` initializes |aead_ctx| with + * new AEAD cipher context object for encryption which is constructed + * to use |key| as encryption key. |aead| specifies AEAD cipher to + * use. |noncelen| is the length of nonce. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int +ngtcp2_crypto_aead_ctx_encrypt_init(ngtcp2_crypto_aead_ctx *aead_ctx, + const ngtcp2_crypto_aead *aead, + const uint8_t *key, size_t noncelen); + +/** + * @function + * + * `ngtcp2_crypto_aead_ctx_decrypt_init` initializes |aead_ctx| with + * new AEAD cipher context object for decryption which is constructed + * to use |key| as decryption key. |aead| specifies AEAD cipher to + * use. |noncelen| is the length of nonce. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int +ngtcp2_crypto_aead_ctx_decrypt_init(ngtcp2_crypto_aead_ctx *aead_ctx, + const ngtcp2_crypto_aead *aead, + const uint8_t *key, size_t noncelen); + +/** + * @function + * + * `ngtcp2_crypto_aead_ctx_free` frees up resources used by + * |aead_ctx|. This function does not free the memory pointed by + * |aead_ctx| itself. + */ +NGTCP2_EXTERN void +ngtcp2_crypto_aead_ctx_free(ngtcp2_crypto_aead_ctx *aead_ctx); + +/** + * @function + * + * `ngtcp2_crypto_delete_crypto_aead_ctx_cb` deletes the given + * |aead_ctx|. + * + * This function can be directly passed to + * :member:`ngtcp2_callbacks.delete_crypto_aead_ctx` field. + */ +NGTCP2_EXTERN void ngtcp2_crypto_delete_crypto_aead_ctx_cb( + ngtcp2_conn *conn, ngtcp2_crypto_aead_ctx *aead_ctx, void *user_data); + +/** + * @function + * + * `ngtcp2_crypto_delete_crypto_cipher_ctx_cb` deletes the given + * |cipher_ctx|. + * + * This function can be directly passed to + * :member:`ngtcp2_callbacks.delete_crypto_cipher_ctx` field. + */ +NGTCP2_EXTERN void ngtcp2_crypto_delete_crypto_cipher_ctx_cb( + ngtcp2_conn *conn, ngtcp2_crypto_cipher_ctx *cipher_ctx, void *user_data); + +/** + * @function + * + * `ngtcp2_crypto_get_path_challenge_data_cb` writes unpredictable + * sequence of :macro:`NGTCP2_PATH_CHALLENGE_DATALEN` bytes to |data| + * which is sent with PATH_CHALLENGE frame. + * + * This function can be directly passed to + * :member:`ngtcp2_callbacks.get_path_challenge_data` field. + */ +NGTCP2_EXTERN int ngtcp2_crypto_get_path_challenge_data_cb(ngtcp2_conn *conn, + uint8_t *data, + void *user_data); + +/** + * @function + * + * `ngtcp2_crypto_version_negotiation_cb` installs Initial keys for + * |version| which is negotiated or being negotiated. |client_dcid| + * is the destination connection ID in first Initial packet from + * client. + * + * This function can be directly passed to + * :member:`ngtcp2_callbacks.version_negotiation` field. + */ +NGTCP2_EXTERN int +ngtcp2_crypto_version_negotiation_cb(ngtcp2_conn *conn, uint32_t version, + const ngtcp2_cid *client_dcid, + void *user_data); + +typedef struct ngtcp2_crypto_conn_ref ngtcp2_crypto_conn_ref; + +/** + * @functypedef + * + * :type:`ngtcp2_crypto_get_conn` is a callback function to get a + * pointer to :type:`ngtcp2_conn` from |conn_ref|. The implementation + * must return non-NULL :type:`ngtcp2_conn` object. + */ +typedef ngtcp2_conn *(*ngtcp2_crypto_get_conn)( + ngtcp2_crypto_conn_ref *conn_ref); + +/** + * @struct + * + * :type:`ngtcp2_crypto_conn_ref` is a structure to get a pointer to + * :type:`ngtcp2_conn`. It is meant to be set to TLS native handle as + * an application specific data (e.g. SSL_set_app_data in quictls). + */ +typedef struct ngtcp2_crypto_conn_ref { + /** + * :member:`get_conn` is a callback function to get a pointer to + * :type:`ngtcp2_conn` object. + */ + ngtcp2_crypto_get_conn get_conn; + /** + * :member:`user_data` is a pointer to arbitrary user data. + */ + void *user_data; +} ngtcp2_crypto_conn_ref; + +#ifdef __cplusplus +} +#endif /* defined(__cplusplus) */ + +#endif /* !defined(NGTCP2_CRYPTO_H) */ diff --git a/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2_crypto_quictls.h b/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2_crypto_quictls.h new file mode 100644 index 0000000000..22e3eda0c4 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2_crypto_quictls.h @@ -0,0 +1,147 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_CRYPTO_QUICTLS_H +#define NGTCP2_CRYPTO_QUICTLS_H + +#include <ngtcp2/ngtcp2.h> + +#include <openssl/ssl.h> + +#ifdef __cplusplus +extern "C" { +#endif /* defined(__cplusplus) */ + +/** + * @macrosection + * + * quictls specific error codes + */ + +/** + * @macro + * + * :macro:`NGTCP2_CRYPTO_QUICTLS_ERR_TLS_WANT_X509_LOOKUP` is the + * error code which indicates that TLS handshake routine is + * interrupted by X509 certificate lookup. See + * :macro:`SSL_ERROR_WANT_X509_LOOKUP` error description from + * `SSL_do_handshake`. + */ +#define NGTCP2_CRYPTO_QUICTLS_ERR_TLS_WANT_X509_LOOKUP -10001 + +/** + * @macro + * + * :macro:`NGTCP2_CRYPTO_QUICTLS_ERR_TLS_WANT_CLIENT_HELLO_CB` is the + * error code which indicates that TLS handshake routine is + * interrupted by client hello callback. See + * :macro:`SSL_ERROR_WANT_CLIENT_HELLO_CB` error description from + * `SSL_do_handshake`. + */ +#define NGTCP2_CRYPTO_QUICTLS_ERR_TLS_WANT_CLIENT_HELLO_CB -10002 + +/** + * @function + * + * `ngtcp2_crypto_quictls_from_ossl_encryption_level` translates + * |ossl_level| to :type:`ngtcp2_encryption_level`. This function is + * only available for quictls backend. + */ +NGTCP2_EXTERN ngtcp2_encryption_level +ngtcp2_crypto_quictls_from_ossl_encryption_level( + OSSL_ENCRYPTION_LEVEL ossl_level); + +/** + * @function + * + * `ngtcp2_crypto_quictls_from_ngtcp2_encryption_level` translates + * |encryption_level| to OSSL_ENCRYPTION_LEVEL. This function is only + * available for quictls backend. + */ +NGTCP2_EXTERN OSSL_ENCRYPTION_LEVEL +ngtcp2_crypto_quictls_from_ngtcp2_encryption_level( + ngtcp2_encryption_level encryption_level); + +/** + * @function + * + * `ngtcp2_crypto_quictls_configure_server_context` configures + * |ssl_ctx| for server side QUIC connection. It performs the + * following modifications: + * + * - Set minimum and maximum TLS version to TLSv1.3. + * - Set SSL_QUIC_METHOD by calling SSL_CTX_set_quic_method. + * + * Application must set a pointer to :type:`ngtcp2_crypto_conn_ref` to + * SSL object by calling SSL_set_app_data, and + * :type:`ngtcp2_crypto_conn_ref` object must have + * :member:`ngtcp2_crypto_conn_ref.get_conn` field assigned to get + * :type:`ngtcp2_conn`. + * + * It returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int +ngtcp2_crypto_quictls_configure_server_context(SSL_CTX *ssl_ctx); + +/** + * @function + * + * `ngtcp2_crypto_quictls_configure_client_context` configures + * |ssl_ctx| for client side QUIC connection. It performs the + * following modifications: + * + * - Set minimum and maximum TLS version to TLSv1.3. + * - Set SSL_QUIC_METHOD by calling SSL_CTX_set_quic_method. + * + * Application must set a pointer to :type:`ngtcp2_crypto_conn_ref` to + * SSL object by calling SSL_set_app_data, and + * :type:`ngtcp2_crypto_conn_ref` object must have + * :member:`ngtcp2_crypto_conn_ref.get_conn` field assigned to get + * :type:`ngtcp2_conn`. + * + * It returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int +ngtcp2_crypto_quictls_configure_client_context(SSL_CTX *ssl_ctx); + +/** + * @function + * + * `ngtcp2_crypto_quictls_init` initializes libngtcp2_crypto_quictls + * library. This initialization is optional. For quictls >= 3.0, it + * is highly recommended to call this function before any use of + * libngtcp2_crypto library API to workaround the performance + * regression. Note that calling this function does not solve all + * performance issues introduced in 3.x. For quictls 1.1.1, this + * function does nothing, and always succeeds. + * + * This function returns 0 if it succeeds, or -1. + */ +NGTCP2_EXTERN int ngtcp2_crypto_quictls_init(void); + +#ifdef __cplusplus +} +#endif /* defined(__cplusplus) */ + +#endif /* !defined(NGTCP2_CRYPTO_QUICTLS_H) */ diff --git a/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2_macro.h b/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2_macro.h new file mode 100644 index 0000000000..649ed8434a --- /dev/null +++ b/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2_macro.h @@ -0,0 +1,81 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_MACRO_H +#define NGTCP2_MACRO_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <stddef.h> + +#include <ngtcp2/ngtcp2.h> + +#define ngtcp2_struct_of(ptr, type, member) \ + ((type *)(void *)((char *)(ptr) - offsetof(type, member))) + +/* ngtcp2_list_insert inserts |T| before |*PD|. The contract is that + this is singly linked list, and the next element is pointed by next + field of the previous element. |PD| must be a pointer to the + pointer to the next field of the previous element of |*PD|: if C is + the previous element of |PD|, PD = &C->next. */ +#define ngtcp2_list_insert(T, PD) \ + do { \ + (T)->next = *(PD); \ + *(PD) = (T); \ + } while (0) + +/* + * ngtcp2_arraylen returns the number of elements in array |A|. + */ +#define ngtcp2_arraylen(A) (sizeof(A) / sizeof(A[0])) + +#define ngtcp2_max_def(SUFFIX, T) \ + static inline T ngtcp2_max_##SUFFIX(T a, T b) { return a < b ? b : a; } + +ngtcp2_max_def(int8, int8_t); +ngtcp2_max_def(int16, int16_t); +ngtcp2_max_def(int32, int32_t); +ngtcp2_max_def(int64, int64_t); +ngtcp2_max_def(uint8, uint8_t); +ngtcp2_max_def(uint16, uint16_t); +ngtcp2_max_def(uint32, uint32_t); +ngtcp2_max_def(uint64, uint64_t); +ngtcp2_max_def(size, size_t); + +#define ngtcp2_min_def(SUFFIX, T) \ + static inline T ngtcp2_min_##SUFFIX(T a, T b) { return a < b ? a : b; } + +ngtcp2_min_def(int8, int8_t); +ngtcp2_min_def(int16, int16_t); +ngtcp2_min_def(int32, int32_t); +ngtcp2_min_def(int64, int64_t); +ngtcp2_min_def(uint8, uint8_t); +ngtcp2_min_def(uint16, uint16_t); +ngtcp2_min_def(uint32, uint32_t); +ngtcp2_min_def(uint64, uint64_t); +ngtcp2_min_def(size, size_t); + +#endif /* !defined(NGTCP2_MACRO_H) */ diff --git a/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2_net.h b/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2_net.h new file mode 100644 index 0000000000..103a2fb2d8 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/includes/ngtcp2/ngtcp2_net.h @@ -0,0 +1,141 @@ +/* + * ngtcp2 + * + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_NET_H +#define NGTCP2_NET_H + +/* This header file is explicitly allowed to be shared with + ngtcp2_crypto library. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif /* defined(HAVE_ARPA_INET_H) */ + +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif /* defined(HAVE_NETINET_IN_H) */ + +#ifdef HAVE_BYTESWAP_H +# include <byteswap.h> +#endif /* defined(HAVE_BYTESWAP_H) */ + +#ifdef HAVE_ENDIAN_H +# include <endian.h> +#endif /* defined(HAVE_ENDIAN_H) */ + +#ifdef HAVE_SYS_ENDIAN_H +# include <sys/endian.h> +#endif /* defined(HAVE_SYS_ENDIAN_H) */ + +#ifdef __APPLE__ +# include <libkern/OSByteOrder.h> +#endif /* defined(__APPLE__) */ + +#include <ngtcp2/ngtcp2.h> + +#if HAVE_DECL_BE64TOH +# define ngtcp2_ntohl64(N) be64toh(N) +# define ngtcp2_htonl64(N) htobe64(N) +#else /* !HAVE_DECL_BE64TOH */ +# ifdef WORDS_BIGENDIAN +# define ngtcp2_ntohl64(N) (N) +# define ngtcp2_htonl64(N) (N) +# else /* !defined(WORDS_BIGENDIAN) */ +# if HAVE_DECL_BSWAP_64 +# define ngtcp2_bswap64 bswap_64 +# elif defined(WIN32) +# define ngtcp2_bswap64 _byteswap_uint64 +# elif defined(__APPLE__) +# define ngtcp2_bswap64 OSSwapInt64 +# else /* !(HAVE_DECL_BSWAP_64 || defined(WIN32) || defined(__APPLE__)) */ +# define ngtcp2_bswap64(N) \ + ((uint64_t)(ngtcp2_ntohl((uint32_t)(N))) << 32 | \ + ngtcp2_ntohl((uint32_t)((N) >> 32))) +# endif /* !(HAVE_DECL_BSWAP_64 || defined(WIN32) || defined(__APPLE__)) */ +# define ngtcp2_ntohl64(N) ngtcp2_bswap64(N) +# define ngtcp2_htonl64(N) ngtcp2_bswap64(N) +# endif /* !defined(WORDS_BIGENDIAN) */ +#endif /* !HAVE_DECL_BE64TOH */ + +#ifdef WIN32 +/* Windows requires ws2_32 library for ntonl family functions. We + define inline functions for those function so that we don't have + dependency on that lib. */ + +# ifdef _MSC_VER +# define STIN static __inline +# else /* !defined(_MSC_VER) */ +# define STIN static inline +# endif /* !defined(_MSC_VER) */ + +STIN uint32_t ngtcp2_htonl(uint32_t hostlong) { + uint32_t res; + unsigned char *p = (unsigned char *)&res; + *p++ = (unsigned char)(hostlong >> 24); + *p++ = (hostlong >> 16) & 0xffu; + *p++ = (hostlong >> 8) & 0xffu; + *p = hostlong & 0xffu; + return res; +} + +STIN uint16_t ngtcp2_htons(uint16_t hostshort) { + uint16_t res; + unsigned char *p = (unsigned char *)&res; + *p++ = (unsigned char)(hostshort >> 8); + *p = hostshort & 0xffu; + return res; +} + +STIN uint32_t ngtcp2_ntohl(uint32_t netlong) { + uint32_t res; + unsigned char *p = (unsigned char *)&netlong; + res = (uint32_t)(*p++ << 24); + res += (uint32_t)(*p++ << 16); + res += (uint32_t)(*p++ << 8); + res += *p; + return res; +} + +STIN uint16_t ngtcp2_ntohs(uint16_t netshort) { + uint16_t res; + unsigned char *p = (unsigned char *)&netshort; + res = (uint16_t)(*p++ << 8); + res += *p; + return res; +} + +#else /* !defined(WIN32) */ + +# define ngtcp2_htonl htonl +# define ngtcp2_htons htons +# define ngtcp2_ntohl ntohl +# define ngtcp2_ntohs ntohs + +#endif /* !defined(WIN32) */ + +#endif /* !defined(NGTCP2_NET_H) */ diff --git a/contrib/libs/ngtcp2/lib/includes/ngtcp2/version.h b/contrib/libs/ngtcp2/lib/includes/ngtcp2/version.h new file mode 100644 index 0000000000..881ecb114d --- /dev/null +++ b/contrib/libs/ngtcp2/lib/includes/ngtcp2/version.h @@ -0,0 +1,51 @@ +/* + * ngtcp2 + * + * Copyright (c) 2016 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_VERSION_H +#define NGTCP2_VERSION_H + +/** + * @macrosection + * + * Library version macros + */ + +/** + * @macro + * + * Version number of the ngtcp2 library release. + */ +#define NGTCP2_VERSION "1.8.1" + +/** + * @macro + * + * Numerical representation of the version number of the ngtcp2 + * library release. This is a 24 bit number with 8 bits for major + * number, 8 bits for minor and 8 bits for patch. Version 1.2.3 + * becomes 0x010203. + */ +#define NGTCP2_VERSION_NUM 0x010801 + +#endif /* !defined(NGTCP2_VERSION_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_acktr.c b/contrib/libs/ngtcp2/lib/ngtcp2_acktr.c new file mode 100644 index 0000000000..d5508ba890 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_acktr.c @@ -0,0 +1,328 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_acktr.h" + +#include <assert.h> + +#include "ngtcp2_macro.h" +#include "ngtcp2_tstamp.h" + +ngtcp2_objalloc_def(acktr_entry, ngtcp2_acktr_entry, oplent); + +static void acktr_entry_init(ngtcp2_acktr_entry *ent, int64_t pkt_num, + ngtcp2_tstamp tstamp) { + ent->pkt_num = pkt_num; + ent->len = 1; + ent->tstamp = tstamp; +} + +int ngtcp2_acktr_entry_objalloc_new(ngtcp2_acktr_entry **ent, int64_t pkt_num, + ngtcp2_tstamp tstamp, + ngtcp2_objalloc *objalloc) { + *ent = ngtcp2_objalloc_acktr_entry_get(objalloc); + if (*ent == NULL) { + return NGTCP2_ERR_NOMEM; + } + + acktr_entry_init(*ent, pkt_num, tstamp); + + return 0; +} + +void ngtcp2_acktr_entry_objalloc_del(ngtcp2_acktr_entry *ent, + ngtcp2_objalloc *objalloc) { + ngtcp2_objalloc_acktr_entry_release(objalloc, ent); +} + +static int greater(const ngtcp2_ksl_key *lhs, const ngtcp2_ksl_key *rhs) { + return *(int64_t *)lhs > *(int64_t *)rhs; +} + +void ngtcp2_acktr_init(ngtcp2_acktr *acktr, ngtcp2_log *log, + const ngtcp2_mem *mem) { + ngtcp2_objalloc_acktr_entry_init(&acktr->objalloc, NGTCP2_ACKTR_MAX_ENT + 1, + mem); + + ngtcp2_static_ringbuf_acks_init(&acktr->acks); + + ngtcp2_ksl_init(&acktr->ents, greater, sizeof(int64_t), mem); + + acktr->log = log; + acktr->flags = NGTCP2_ACKTR_FLAG_NONE; + acktr->first_unacked_ts = UINT64_MAX; + acktr->rx_npkt = 0; +} + +void ngtcp2_acktr_free(ngtcp2_acktr *acktr) { +#ifdef NOMEMPOOL + ngtcp2_ksl_it it; +#endif /* defined(NOMEMPOOL) */ + + if (acktr == NULL) { + return; + } + +#ifdef NOMEMPOOL + for (it = ngtcp2_ksl_begin(&acktr->ents); !ngtcp2_ksl_it_end(&it); + ngtcp2_ksl_it_next(&it)) { + ngtcp2_acktr_entry_objalloc_del(ngtcp2_ksl_it_get(&it), &acktr->objalloc); + } +#endif /* defined(NOMEMPOOL) */ + + ngtcp2_ksl_free(&acktr->ents); + + ngtcp2_objalloc_free(&acktr->objalloc); +} + +int ngtcp2_acktr_add(ngtcp2_acktr *acktr, int64_t pkt_num, int active_ack, + ngtcp2_tstamp ts) { + ngtcp2_ksl_it it, prev_it; + ngtcp2_acktr_entry *ent, *prev_ent, *delent; + int rv; + int added = 0; + + if (ngtcp2_ksl_len(&acktr->ents)) { + it = ngtcp2_ksl_lower_bound(&acktr->ents, &pkt_num); + if (ngtcp2_ksl_it_end(&it)) { + ngtcp2_ksl_it_prev(&it); + ent = ngtcp2_ksl_it_get(&it); + + assert(ent->pkt_num >= pkt_num + (int64_t)ent->len); + + if (ent->pkt_num == pkt_num + (int64_t)ent->len) { + ++ent->len; + added = 1; + } + } else { + ent = ngtcp2_ksl_it_get(&it); + + assert(ent->pkt_num != pkt_num); + + if (ngtcp2_ksl_it_begin(&it)) { + if (ent->pkt_num + 1 == pkt_num) { + ngtcp2_ksl_update_key(&acktr->ents, &ent->pkt_num, &pkt_num); + ent->pkt_num = pkt_num; + ent->tstamp = ts; + ++ent->len; + added = 1; + } + } else { + prev_it = it; + ngtcp2_ksl_it_prev(&prev_it); + prev_ent = ngtcp2_ksl_it_get(&prev_it); + + assert(prev_ent->pkt_num >= pkt_num + (int64_t)prev_ent->len); + + if (ent->pkt_num + 1 == pkt_num) { + if (prev_ent->pkt_num == pkt_num + (int64_t)prev_ent->len) { + prev_ent->len += ent->len + 1; + ngtcp2_ksl_remove_hint(&acktr->ents, NULL, &it, &ent->pkt_num); + ngtcp2_acktr_entry_objalloc_del(ent, &acktr->objalloc); + added = 1; + } else { + ngtcp2_ksl_update_key(&acktr->ents, &ent->pkt_num, &pkt_num); + ent->pkt_num = pkt_num; + ent->tstamp = ts; + ++ent->len; + added = 1; + } + } else if (prev_ent->pkt_num == pkt_num + (int64_t)prev_ent->len) { + ++prev_ent->len; + added = 1; + } + } + } + } + + if (!added) { + rv = ngtcp2_acktr_entry_objalloc_new(&ent, pkt_num, ts, &acktr->objalloc); + if (rv != 0) { + return rv; + } + rv = ngtcp2_ksl_insert(&acktr->ents, NULL, &ent->pkt_num, ent); + if (rv != 0) { + ngtcp2_acktr_entry_objalloc_del(ent, &acktr->objalloc); + return rv; + } + } + + if (active_ack) { + acktr->flags |= NGTCP2_ACKTR_FLAG_ACTIVE_ACK; + if (acktr->first_unacked_ts == UINT64_MAX) { + acktr->first_unacked_ts = ts; + } + } + + if (ngtcp2_ksl_len(&acktr->ents) > NGTCP2_ACKTR_MAX_ENT) { + it = ngtcp2_ksl_end(&acktr->ents); + ngtcp2_ksl_it_prev(&it); + delent = ngtcp2_ksl_it_get(&it); + ngtcp2_ksl_remove_hint(&acktr->ents, NULL, &it, &delent->pkt_num); + ngtcp2_acktr_entry_objalloc_del(delent, &acktr->objalloc); + } + + return 0; +} + +void ngtcp2_acktr_forget(ngtcp2_acktr *acktr, ngtcp2_acktr_entry *ent) { + ngtcp2_ksl_it it; + + it = ngtcp2_ksl_lower_bound(&acktr->ents, &ent->pkt_num); + assert(*(int64_t *)ngtcp2_ksl_it_key(&it) == (int64_t)ent->pkt_num); + + for (; !ngtcp2_ksl_it_end(&it);) { + ent = ngtcp2_ksl_it_get(&it); + ngtcp2_ksl_remove_hint(&acktr->ents, &it, &it, &ent->pkt_num); + ngtcp2_acktr_entry_objalloc_del(ent, &acktr->objalloc); + } +} + +ngtcp2_ksl_it ngtcp2_acktr_get(const ngtcp2_acktr *acktr) { + return ngtcp2_ksl_begin(&acktr->ents); +} + +int ngtcp2_acktr_empty(const ngtcp2_acktr *acktr) { + ngtcp2_ksl_it it = ngtcp2_ksl_begin(&acktr->ents); + return ngtcp2_ksl_it_end(&it); +} + +ngtcp2_acktr_ack_entry *ngtcp2_acktr_add_ack(ngtcp2_acktr *acktr, + int64_t pkt_num, + int64_t largest_ack) { + ngtcp2_acktr_ack_entry *ent = ngtcp2_ringbuf_push_front(&acktr->acks.rb); + + ent->largest_ack = largest_ack; + ent->pkt_num = pkt_num; + + return ent; +} + +/* + * acktr_remove removes |ent| from |acktr|. |it| must point to the + * node whose key identifies |ent|. The iterator which points to the + * entry next to |ent| is assigned to |it|. + */ +static void acktr_remove(ngtcp2_acktr *acktr, ngtcp2_ksl_it *it, + ngtcp2_acktr_entry *ent) { + ngtcp2_ksl_remove_hint(&acktr->ents, it, it, &ent->pkt_num); + ngtcp2_acktr_entry_objalloc_del(ent, &acktr->objalloc); +} + +static void acktr_on_ack(ngtcp2_acktr *acktr, ngtcp2_ringbuf *rb, + size_t ack_ent_offset) { + ngtcp2_acktr_ack_entry *ack_ent; + ngtcp2_acktr_entry *ent; + ngtcp2_ksl_it it; + + assert(ngtcp2_ringbuf_len(rb)); + + ack_ent = ngtcp2_ringbuf_get(rb, ack_ent_offset); + + /* Assume that ngtcp2_pkt_validate_ack(fr) returns 0 */ + it = ngtcp2_ksl_lower_bound(&acktr->ents, &ack_ent->largest_ack); + for (; !ngtcp2_ksl_it_end(&it);) { + ent = ngtcp2_ksl_it_get(&it); + acktr_remove(acktr, &it, ent); + } + + if (ngtcp2_ksl_len(&acktr->ents)) { + assert(ngtcp2_ksl_it_end(&it)); + + ngtcp2_ksl_it_prev(&it); + ent = ngtcp2_ksl_it_get(&it); + + assert(ent->pkt_num > ack_ent->largest_ack); + + if (ack_ent->largest_ack + (int64_t)ent->len > ent->pkt_num) { + ent->len = (size_t)(ent->pkt_num - ack_ent->largest_ack); + } + } + + ngtcp2_ringbuf_resize(rb, ack_ent_offset); +} + +void ngtcp2_acktr_recv_ack(ngtcp2_acktr *acktr, const ngtcp2_ack *fr) { + ngtcp2_acktr_ack_entry *ent; + int64_t largest_ack = fr->largest_ack, min_ack; + size_t i, j; + ngtcp2_ringbuf *rb = &acktr->acks.rb; + size_t nacks = ngtcp2_ringbuf_len(rb); + + /* Assume that ngtcp2_pkt_validate_ack(fr) returns 0 */ + for (j = 0; j < nacks; ++j) { + ent = ngtcp2_ringbuf_get(rb, j); + if (largest_ack >= ent->pkt_num) { + break; + } + } + if (j == nacks) { + return; + } + + min_ack = largest_ack - (int64_t)fr->first_ack_range; + + if (min_ack <= ent->pkt_num) { + acktr_on_ack(acktr, rb, j); + return; + } + + for (i = 0; i < fr->rangecnt && j < nacks; ++i) { + largest_ack = min_ack - (int64_t)fr->ranges[i].gap - 2; + min_ack = largest_ack - (int64_t)fr->ranges[i].len; + + for (;;) { + if (ent->pkt_num > largest_ack) { + if (++j == nacks) { + return; + } + ent = ngtcp2_ringbuf_get(rb, j); + continue; + } + if (ent->pkt_num < min_ack) { + break; + } + acktr_on_ack(acktr, rb, j); + return; + } + } +} + +void ngtcp2_acktr_commit_ack(ngtcp2_acktr *acktr) { + acktr->flags &= (uint16_t) ~(NGTCP2_ACKTR_FLAG_ACTIVE_ACK | + NGTCP2_ACKTR_FLAG_IMMEDIATE_ACK | + NGTCP2_ACKTR_FLAG_CANCEL_TIMER); + acktr->first_unacked_ts = UINT64_MAX; + acktr->rx_npkt = 0; +} + +int ngtcp2_acktr_require_active_ack(const ngtcp2_acktr *acktr, + ngtcp2_duration max_ack_delay, + ngtcp2_tstamp ts) { + return ngtcp2_tstamp_elapsed(acktr->first_unacked_ts, max_ack_delay, ts); +} + +void ngtcp2_acktr_immediate_ack(ngtcp2_acktr *acktr) { + acktr->flags |= NGTCP2_ACKTR_FLAG_IMMEDIATE_ACK; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_acktr.h b/contrib/libs/ngtcp2/lib/ngtcp2_acktr.h new file mode 100644 index 0000000000..4ef420723d --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_acktr.h @@ -0,0 +1,216 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_ACKTR_H +#define NGTCP2_ACKTR_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_mem.h" +#include "ngtcp2_ringbuf.h" +#include "ngtcp2_ksl.h" +#include "ngtcp2_pkt.h" +#include "ngtcp2_objalloc.h" + +/* NGTCP2_ACKTR_MAX_ENT is the maximum number of ngtcp2_acktr_entry + which ngtcp2_acktr stores. */ +#define NGTCP2_ACKTR_MAX_ENT (NGTCP2_MAX_ACK_RANGES + 1) + +typedef struct ngtcp2_log ngtcp2_log; + +/* + * ngtcp2_acktr_entry is a range of packets which need to be acked. + */ +typedef struct ngtcp2_acktr_entry { + union { + struct { + /* pkt_num is the largest packet number to acknowledge in this + range. */ + int64_t pkt_num; + /* len is the consecutive packets started from pkt_num which + includes pkt_num itself counting in decreasing order. So pkt_num + = 987 and len = 2, this entry includes packet 987 and 986. */ + size_t len; + /* tstamp is the timestamp when a packet denoted by pkt_num is + received. */ + ngtcp2_tstamp tstamp; + }; + + ngtcp2_opl_entry oplent; + }; +} ngtcp2_acktr_entry; + +ngtcp2_objalloc_decl(acktr_entry, ngtcp2_acktr_entry, oplent); + +/* + * ngtcp2_acktr_entry_objalloc_new allocates memory for ent, and + * initializes it with the given parameters. The pointer to the + * allocated object is stored to |*ent|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_acktr_entry_objalloc_new(ngtcp2_acktr_entry **ent, int64_t pkt_num, + ngtcp2_tstamp tstamp, + ngtcp2_objalloc *objalloc); + +/* + * ngtcp2_acktr_entry_objalloc_del deallocates memory allocated for + * |ent|. + */ +void ngtcp2_acktr_entry_objalloc_del(ngtcp2_acktr_entry *ent, + ngtcp2_objalloc *objalloc); + +typedef struct ngtcp2_acktr_ack_entry { + /* largest_ack is the largest packet number in outgoing ACK frame */ + int64_t largest_ack; + /* pkt_num is the packet number that ACK frame is included. */ + int64_t pkt_num; +} ngtcp2_acktr_ack_entry; + +/* NGTCP2_ACKTR_FLAG_NONE indicates that no flag set. */ +#define NGTCP2_ACKTR_FLAG_NONE 0x00u +/* NGTCP2_ACKTR_FLAG_IMMEDIATE_ACK indicates that immediate + acknowledgement is required. */ +#define NGTCP2_ACKTR_FLAG_IMMEDIATE_ACK 0x01u +/* NGTCP2_ACKTR_FLAG_ACTIVE_ACK indicates that there are pending + protected packet to be acknowledged. */ +#define NGTCP2_ACKTR_FLAG_ACTIVE_ACK 0x02u +/* NGTCP2_ACKTR_FLAG_CANCEL_TIMER is set when ACK delay timer is + expired and canceled. */ +#define NGTCP2_ACKTR_FLAG_CANCEL_TIMER 0x0100u + +ngtcp2_static_ringbuf_def(acks, 32, sizeof(ngtcp2_acktr_ack_entry)); + +/* + * ngtcp2_acktr tracks received packets which we have to send ack. + */ +typedef struct ngtcp2_acktr { + ngtcp2_objalloc objalloc; + ngtcp2_static_ringbuf_acks acks; + /* ents includes ngtcp2_acktr_entry sorted by decreasing order of + packet number. */ + ngtcp2_ksl ents; + ngtcp2_log *log; + /* flags is bitwise OR of zero, or more of NGTCP2_ACKTR_FLAG_*. */ + uint16_t flags; + /* first_unacked_ts is timestamp when ngtcp2_acktr_entry is added + first time after the last outgoing ACK frame. */ + ngtcp2_tstamp first_unacked_ts; + /* rx_npkt is the number of ACK eliciting packets received without + sending ACK. */ + size_t rx_npkt; +} ngtcp2_acktr; + +/* + * ngtcp2_acktr_init initializes |acktr|. + */ +void ngtcp2_acktr_init(ngtcp2_acktr *acktr, ngtcp2_log *log, + const ngtcp2_mem *mem); + +/* + * ngtcp2_acktr_free frees resources allocated for |acktr|. It frees + * any ngtcp2_acktr_entry added to |acktr|. + */ +void ngtcp2_acktr_free(ngtcp2_acktr *acktr); + +/* + * ngtcp2_acktr_add adds packet number |pkt_num| to |acktr|. + * |active_ack| is nonzero if |pkt_num| is retransmittable packet. + * + * This function assumes that |acktr| does not contain |pkt_num|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * OUt of memory. + */ +int ngtcp2_acktr_add(ngtcp2_acktr *acktr, int64_t pkt_num, int active_ack, + ngtcp2_tstamp ts); + +/* + * ngtcp2_acktr_forget removes all entries which have the packet + * number that is equal to or less than ent->pkt_num. This function + * assumes that |acktr| includes |ent|. + */ +void ngtcp2_acktr_forget(ngtcp2_acktr *acktr, ngtcp2_acktr_entry *ent); + +/* + * ngtcp2_acktr_get returns the pointer to pointer to the entry which + * has the largest packet number to be acked. If there is no entry, + * returned value satisfies ngtcp2_ksl_it_end(&it) != 0. + */ +ngtcp2_ksl_it ngtcp2_acktr_get(const ngtcp2_acktr *acktr); + +/* + * ngtcp2_acktr_empty returns nonzero if it has no packet to + * acknowledge. + */ +int ngtcp2_acktr_empty(const ngtcp2_acktr *acktr); + +/* + * ngtcp2_acktr_add_ack records outgoing ACK frame whose largest + * acknowledged packet number is |largest_ack|. |pkt_num| is the + * packet number of a packet in which ACK frame is included. This + * function returns a pointer to the object it adds. + */ +ngtcp2_acktr_ack_entry * +ngtcp2_acktr_add_ack(ngtcp2_acktr *acktr, int64_t pkt_num, int64_t largest_ack); + +/* + * ngtcp2_acktr_recv_ack processes the incoming ACK frame |fr|. + * |pkt_num| is a packet number which includes |fr|. If we receive + * ACK which acknowledges the ACKs added by ngtcp2_acktr_add_ack, + * ngtcp2_acktr_entry which the outgoing ACK acknowledges is removed. + */ +void ngtcp2_acktr_recv_ack(ngtcp2_acktr *acktr, const ngtcp2_ack *fr); + +/* + * ngtcp2_acktr_commit_ack tells |acktr| that ACK frame is generated. + */ +void ngtcp2_acktr_commit_ack(ngtcp2_acktr *acktr); + +/* + * ngtcp2_acktr_require_active_ack returns nonzero if ACK frame should + * be generated actively. + */ +int ngtcp2_acktr_require_active_ack(const ngtcp2_acktr *acktr, + ngtcp2_duration max_ack_delay, + ngtcp2_tstamp ts); + +/* + * ngtcp2_acktr_immediate_ack tells |acktr| that immediate + * acknowledgement is required. + */ +void ngtcp2_acktr_immediate_ack(ngtcp2_acktr *acktr); + +#endif /* !defined(NGTCP2_ACKTR_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_addr.c b/contrib/libs/ngtcp2/lib/ngtcp2_addr.c new file mode 100644 index 0000000000..f389abe76d --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_addr.c @@ -0,0 +1,117 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_addr.h" + +#include <string.h> +#include <assert.h> + +#include "ngtcp2_unreachable.h" + +ngtcp2_addr *ngtcp2_addr_init(ngtcp2_addr *dest, const ngtcp2_sockaddr *addr, + ngtcp2_socklen addrlen) { + dest->addrlen = addrlen; + dest->addr = (ngtcp2_sockaddr *)addr; + return dest; +} + +void ngtcp2_addr_copy(ngtcp2_addr *dest, const ngtcp2_addr *src) { + dest->addrlen = src->addrlen; + if (src->addrlen) { + memcpy(dest->addr, src->addr, (size_t)src->addrlen); + } +} + +void ngtcp2_addr_copy_byte(ngtcp2_addr *dest, const ngtcp2_sockaddr *addr, + ngtcp2_socklen addrlen) { + dest->addrlen = addrlen; + if (addrlen) { + memcpy(dest->addr, addr, (size_t)addrlen); + } +} + +static int sockaddr_eq(const ngtcp2_sockaddr *a, const ngtcp2_sockaddr *b) { + assert(a->sa_family == b->sa_family); + + switch (a->sa_family) { + case NGTCP2_AF_INET: { + const ngtcp2_sockaddr_in *ai = (const ngtcp2_sockaddr_in *)(void *)a, + *bi = (const ngtcp2_sockaddr_in *)(void *)b; + return ai->sin_port == bi->sin_port && + memcmp(&ai->sin_addr, &bi->sin_addr, sizeof(ai->sin_addr)) == 0; + } + case NGTCP2_AF_INET6: { + const ngtcp2_sockaddr_in6 *ai = (const ngtcp2_sockaddr_in6 *)(void *)a, + *bi = (const ngtcp2_sockaddr_in6 *)(void *)b; + return ai->sin6_port == bi->sin6_port && + memcmp(&ai->sin6_addr, &bi->sin6_addr, sizeof(ai->sin6_addr)) == 0; + } + default: + ngtcp2_unreachable(); + } +} + +int ngtcp2_addr_eq(const ngtcp2_addr *a, const ngtcp2_addr *b) { + return a->addr->sa_family == b->addr->sa_family && + sockaddr_eq(a->addr, b->addr); +} + +uint32_t ngtcp2_addr_compare(const ngtcp2_addr *aa, const ngtcp2_addr *bb) { + uint32_t flags = NGTCP2_ADDR_COMPARE_FLAG_NONE; + const ngtcp2_sockaddr *a = aa->addr; + const ngtcp2_sockaddr *b = bb->addr; + + if (a->sa_family != b->sa_family) { + return NGTCP2_ADDR_COMPARE_FLAG_FAMILY; + } + + switch (a->sa_family) { + case NGTCP2_AF_INET: { + const ngtcp2_sockaddr_in *ai = (const ngtcp2_sockaddr_in *)(void *)a, + *bi = (const ngtcp2_sockaddr_in *)(void *)b; + if (memcmp(&ai->sin_addr, &bi->sin_addr, sizeof(ai->sin_addr))) { + flags |= NGTCP2_ADDR_COMPARE_FLAG_ADDR; + } + if (ai->sin_port != bi->sin_port) { + flags |= NGTCP2_ADDR_COMPARE_FLAG_PORT; + } + return flags; + } + case NGTCP2_AF_INET6: { + const ngtcp2_sockaddr_in6 *ai = (const ngtcp2_sockaddr_in6 *)(void *)a, + *bi = (const ngtcp2_sockaddr_in6 *)(void *)b; + if (memcmp(&ai->sin6_addr, &bi->sin6_addr, sizeof(ai->sin6_addr))) { + flags |= NGTCP2_ADDR_COMPARE_FLAG_ADDR; + } + if (ai->sin6_port != bi->sin6_port) { + flags |= NGTCP2_ADDR_COMPARE_FLAG_PORT; + } + return flags; + } + default: + ngtcp2_unreachable(); + } +} + +int ngtcp2_addr_empty(const ngtcp2_addr *addr) { return addr->addrlen == 0; } diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_addr.h b/contrib/libs/ngtcp2/lib/ngtcp2_addr.h new file mode 100644 index 0000000000..65ee7cd9f3 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_addr.h @@ -0,0 +1,71 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_ADDR_H +#define NGTCP2_ADDR_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +/* + * ngtcp2_addr_copy copies |src| to |dest|. This function assumes + * that dest->addr points to a buffer which have sufficient size to + * store the copy. + */ +void ngtcp2_addr_copy(ngtcp2_addr *dest, const ngtcp2_addr *src); + +/** + * @function + * + * `ngtcp2_addr_eq` returns nonzero if |a| equals |b|. + */ +int ngtcp2_addr_eq(const ngtcp2_addr *a, const ngtcp2_addr *b); + +/* NGTCP2_ADDR_COMPARE_FLAG_NONE indicates that no flag set. */ +#define NGTCP2_ADDR_COMPARE_FLAG_NONE 0x0u +/* NGTCP2_ADDR_COMPARE_FLAG_ADDR indicates IP addresses do not + match. */ +#define NGTCP2_ADDR_COMPARE_FLAG_ADDR 0x1u +/* NGTCP2_ADDR_COMPARE_FLAG_PORT indicates ports do not match. */ +#define NGTCP2_ADDR_COMPARE_FLAG_PORT 0x2u +/* NGTCP2_ADDR_COMPARE_FLAG_FAMILY indicates address families do not + match. */ +#define NGTCP2_ADDR_COMPARE_FLAG_FAMILY 0x4u + +/* + * ngtcp2_addr_compare compares address and port between |a| and |b|, + * and returns zero or more of NGTCP2_ADDR_COMPARE_FLAG_*. + */ +uint32_t ngtcp2_addr_compare(const ngtcp2_addr *a, const ngtcp2_addr *b); + +/* + * ngtcp2_addr_empty returns nonzero if |addr| has zero length + * address. + */ +int ngtcp2_addr_empty(const ngtcp2_addr *addr); + +#endif /* !defined(NGTCP2_ADDR_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_balloc.c b/contrib/libs/ngtcp2/lib/ngtcp2_balloc.c new file mode 100644 index 0000000000..4a6797689f --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_balloc.c @@ -0,0 +1,90 @@ +/* + * ngtcp2 + * + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_balloc.h" + +#include <assert.h> + +#include "ngtcp2_mem.h" + +void ngtcp2_balloc_init(ngtcp2_balloc *balloc, size_t blklen, + const ngtcp2_mem *mem) { + assert((blklen & 0xfu) == 0); + + balloc->mem = mem; + balloc->blklen = blklen; + balloc->head = NULL; + ngtcp2_buf_init(&balloc->buf, (void *)"", 0); +} + +void ngtcp2_balloc_free(ngtcp2_balloc *balloc) { + if (balloc == NULL) { + return; + } + + ngtcp2_balloc_clear(balloc); +} + +void ngtcp2_balloc_clear(ngtcp2_balloc *balloc) { + ngtcp2_memblock_hd *p, *next; + + for (p = balloc->head; p; p = next) { + next = p->next; + ngtcp2_mem_free(balloc->mem, p); + } + + balloc->head = NULL; + ngtcp2_buf_init(&balloc->buf, (void *)"", 0); +} + +int ngtcp2_balloc_get(ngtcp2_balloc *balloc, void **pbuf, size_t n) { + uint8_t *p; + ngtcp2_memblock_hd *hd; + + assert(n <= balloc->blklen); + + if (ngtcp2_buf_left(&balloc->buf) < n) { + p = ngtcp2_mem_malloc(balloc->mem, + sizeof(ngtcp2_memblock_hd) + 0x8u + balloc->blklen); + if (p == NULL) { + return NGTCP2_ERR_NOMEM; + } + + hd = (ngtcp2_memblock_hd *)(void *)p; + hd->next = balloc->head; + balloc->head = hd; + ngtcp2_buf_init( + &balloc->buf, + (uint8_t *)(((uintptr_t)p + sizeof(ngtcp2_memblock_hd) + 0xfu) & + ~(uintptr_t)0xfu), + balloc->blklen); + } + + assert(((uintptr_t)balloc->buf.last & 0xfu) == 0); + + *pbuf = balloc->buf.last; + balloc->buf.last += (n + 0xfu) & ~(uintptr_t)0xfu; + + return 0; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_balloc.h b/contrib/libs/ngtcp2/lib/ngtcp2_balloc.h new file mode 100644 index 0000000000..e69e7efc6f --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_balloc.h @@ -0,0 +1,94 @@ +/* + * ngtcp2 + * + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_BALLOC_H +#define NGTCP2_BALLOC_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_buf.h" + +typedef struct ngtcp2_memblock_hd ngtcp2_memblock_hd; + +/* + * ngtcp2_memblock_hd is the header of memory block. + */ +struct ngtcp2_memblock_hd { + union { + ngtcp2_memblock_hd *next; + uint64_t pad; + }; +}; + +/* + * ngtcp2_balloc is a custom memory allocator. It allocates |blklen| + * bytes of memory at once on demand, and returns its slice when the + * allocation is requested. + */ +typedef struct ngtcp2_balloc { + /* mem is the underlying memory allocator. */ + const ngtcp2_mem *mem; + /* blklen is the size of memory block. */ + size_t blklen; + /* head points to the list of memory block allocated so far. */ + ngtcp2_memblock_hd *head; + /* buf wraps the current memory block for allocation requests. */ + ngtcp2_buf buf; +} ngtcp2_balloc; + +/* + * ngtcp2_balloc_init initializes |balloc| with |blklen| which is the + * size of memory block. + */ +void ngtcp2_balloc_init(ngtcp2_balloc *balloc, size_t blklen, + const ngtcp2_mem *mem); + +/* + * ngtcp2_balloc_free releases all allocated memory blocks. + */ +void ngtcp2_balloc_free(ngtcp2_balloc *balloc); + +/* + * ngtcp2_balloc_get allocates |n| bytes of memory and assigns its + * pointer to |*pbuf|. + * + * It returns 0 if it succeeds, or one of the following negative error + * codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_balloc_get(ngtcp2_balloc *balloc, void **pbuf, size_t n); + +/* + * ngtcp2_balloc_clear releases all allocated memory blocks and + * initializes its state. + */ +void ngtcp2_balloc_clear(ngtcp2_balloc *balloc); + +#endif /* !defined(NGTCP2_BALLOC_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_bbr.c b/contrib/libs/ngtcp2/lib/ngtcp2_bbr.c new file mode 100644 index 0000000000..5a66c1870b --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_bbr.c @@ -0,0 +1,1425 @@ +/* + * ngtcp2 + * + * Copyright (c) 2021 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_bbr.h" + +#include <assert.h> +#include <string.h> + +#include "ngtcp2_log.h" +#include "ngtcp2_macro.h" +#include "ngtcp2_mem.h" +#include "ngtcp2_rcvry.h" +#include "ngtcp2_rst.h" +#include "ngtcp2_conn_stat.h" + +#define NGTCP2_BBR_MAX_BW_FILTERLEN 2 + +#define NGTCP2_BBR_EXTRA_ACKED_FILTERLEN 10 + +#define NGTCP2_BBR_STARTUP_PACING_GAIN_H 277 +#define NGTCP2_BBR_DRAIN_PACING_GAIN_H 35 + +#define NGTCP2_BBR_DEFAULT_CWND_GAIN_H 200 + +#define NGTCP2_BBR_PROBE_RTT_CWND_GAIN_H 50 + +#define NGTCP2_BBR_BETA_NUMER 7 +#define NGTCP2_BBR_BETA_DENOM 10 + +#define NGTCP2_BBR_LOSS_THRESH_NUMER 2 +#define NGTCP2_BBR_LOSS_THRESH_DENOM 100 + +#define NGTCP2_BBR_HEADROOM_NUMER 15 +#define NGTCP2_BBR_HEADROOM_DENOM 100 + +#define NGTCP2_BBR_PROBE_RTT_INTERVAL (5 * NGTCP2_SECONDS) +#define NGTCP2_BBR_MIN_RTT_FILTERLEN (10 * NGTCP2_SECONDS) + +#define NGTCP2_BBR_PROBE_RTT_DURATION (200 * NGTCP2_MILLISECONDS) + +#define NGTCP2_BBR_PACING_MARGIN_PERCENT 1 + +static void bbr_on_init(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp initial_ts); + +static void bbr_on_transmit(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +static void bbr_reset_congestion_signals(ngtcp2_cc_bbr *bbr); + +static void bbr_reset_lower_bounds(ngtcp2_cc_bbr *bbr); + +static void bbr_init_round_counting(ngtcp2_cc_bbr *bbr); + +static void bbr_reset_full_bw(ngtcp2_cc_bbr *bbr); + +static void bbr_init_pacing_rate(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat); + +static void bbr_set_pacing_rate_with_gain(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + uint64_t pacing_gain_h); + +static void bbr_set_pacing_rate(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat); + +static void bbr_enter_startup(ngtcp2_cc_bbr *bbr); + +static void bbr_check_startup_done(ngtcp2_cc_bbr *bbr); + +static void bbr_update_on_ack(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, ngtcp2_tstamp ts); + +static void bbr_update_model_and_state(ngtcp2_cc_bbr *cc, + ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, + ngtcp2_tstamp ts); + +static void bbr_update_control_parameters(ngtcp2_cc_bbr *cc, + ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack); + +static void bbr_update_on_loss(ngtcp2_cc_bbr *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_pkt *pkt, ngtcp2_tstamp ts); + +static void bbr_update_latest_delivery_signals(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat); + +static void bbr_advance_latest_delivery_signals(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat); + +static void bbr_update_congestion_signals(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack); + +static void bbr_adapt_lower_bounds_from_congestion(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat); + +static void bbr_init_lower_bounds(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat); + +static void bbr_loss_lower_bounds(ngtcp2_cc_bbr *bbr); + +static void bbr_bound_bw_for_model(ngtcp2_cc_bbr *bbr); + +static void bbr_update_max_bw(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack); + +static void bbr_update_round(ngtcp2_cc_bbr *bbr, const ngtcp2_cc_ack *ack); + +static void bbr_start_round(ngtcp2_cc_bbr *bbr); + +static int bbr_is_in_probe_bw_state(ngtcp2_cc_bbr *bbr); + +static void bbr_update_ack_aggregation(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, + ngtcp2_tstamp ts); + +static void bbr_enter_drain(ngtcp2_cc_bbr *bbr); + +static void bbr_check_drain(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +static void bbr_enter_probe_bw(ngtcp2_cc_bbr *bbr, ngtcp2_tstamp ts); + +static void bbr_start_probe_bw_down(ngtcp2_cc_bbr *bbr, ngtcp2_tstamp ts); + +static void bbr_start_probe_bw_cruise(ngtcp2_cc_bbr *bbr); + +static void bbr_start_probe_bw_refill(ngtcp2_cc_bbr *bbr); + +static void bbr_start_probe_bw_up(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat); + +static void bbr_update_probe_bw_cycle_phase(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, + ngtcp2_tstamp ts); + +static int bbr_is_time_to_cruise(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +static int bbr_is_time_to_go_down(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat); + +static int bbr_has_elapsed_in_phase(ngtcp2_cc_bbr *bbr, + ngtcp2_duration interval, ngtcp2_tstamp ts); + +static uint64_t bbr_inflight_with_headroom(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat); + +static void bbr_raise_inflight_hi_slope(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat); + +static void bbr_probe_inflight_hi_upward(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack); + +static void bbr_adapt_upper_bounds(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, ngtcp2_tstamp ts); + +static int bbr_is_time_to_probe_bw(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +static void bbr_pick_probe_wait(ngtcp2_cc_bbr *bbr); + +static int bbr_is_reno_coexistence_probe_time(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat); + +static uint64_t bbr_target_inflight(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat); + +static int bbr_check_inflight_too_high(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +static int is_inflight_too_high(const ngtcp2_rs *rs); + +static void bbr_handle_inflight_too_high(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + const ngtcp2_rs *rs, ngtcp2_tstamp ts); + +static void bbr_note_loss(ngtcp2_cc_bbr *bbr); + +static void bbr_handle_lost_packet(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_pkt *pkt, ngtcp2_tstamp ts); + +static uint64_t bbr_inflight_hi_from_lost_packet(ngtcp2_cc_bbr *bbr, + const ngtcp2_rs *rs, + const ngtcp2_cc_pkt *pkt); + +static void bbr_update_min_rtt(ngtcp2_cc_bbr *bbr, const ngtcp2_cc_ack *ack, + ngtcp2_tstamp ts); + +static void bbr_check_probe_rtt(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +static void bbr_enter_probe_rtt(ngtcp2_cc_bbr *bbr); + +static void bbr_handle_probe_rtt(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +static void bbr_check_probe_rtt_done(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, ngtcp2_tstamp ts); + +static void bbr_mark_connection_app_limited(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat); + +static void bbr_exit_probe_rtt(ngtcp2_cc_bbr *bbr, ngtcp2_tstamp ts); + +static void bbr_handle_restart_from_idle(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +static uint64_t bbr_bdp_multiple(ngtcp2_cc_bbr *bbr, uint64_t gain_h); + +static uint64_t bbr_quantization_budget(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + uint64_t inflight); + +static uint64_t bbr_inflight(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + uint64_t gain_h); + +static void bbr_update_max_inflight(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat); + +static void bbr_update_offload_budget(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat); + +static uint64_t min_pipe_cwnd(size_t max_udp_payload_size); + +static void bbr_advance_max_bw_filter(ngtcp2_cc_bbr *bbr); + +static void bbr_save_cwnd(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat); + +static void bbr_restore_cwnd(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat); + +static uint64_t bbr_probe_rtt_cwnd(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat); + +static void bbr_bound_cwnd_for_probe_rtt(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat); + +static void bbr_set_cwnd(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack); + +static void bbr_bound_cwnd_for_model(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat); + +static void bbr_set_send_quantum(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat); + +static int in_congestion_recovery(const ngtcp2_conn_stat *cstat, + ngtcp2_tstamp sent_time); + +static void bbr_handle_recovery(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack); + +static void bbr_on_init(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp initial_ts) { + ngtcp2_window_filter_init(&bbr->max_bw_filter, NGTCP2_BBR_MAX_BW_FILTERLEN); + ngtcp2_window_filter_init(&bbr->extra_acked_filter, + NGTCP2_BBR_EXTRA_ACKED_FILTERLEN); + + bbr->min_rtt = UINT64_MAX; + bbr->min_rtt_stamp = initial_ts; + /* remark: Use UINT64_MAX instead of 0 for consistency. */ + bbr->probe_rtt_done_stamp = UINT64_MAX; + bbr->probe_rtt_round_done = 0; + bbr->prior_cwnd = 0; + bbr->idle_restart = 0; + bbr->extra_acked_interval_start = initial_ts; + bbr->extra_acked_delivered = 0; + bbr->full_bw_reached = 0; + + bbr_reset_congestion_signals(bbr); + bbr_reset_lower_bounds(bbr); + bbr_init_round_counting(bbr); + bbr_reset_full_bw(bbr); + bbr_init_pacing_rate(bbr, cstat); + bbr_enter_startup(bbr); + + cstat->send_quantum = cstat->max_tx_udp_payload_size * 10; + + /* Missing in documentation */ + bbr->loss_round_start = 0; + bbr->loss_round_delivered = UINT64_MAX; + + bbr->rounds_since_bw_probe = 0; + + bbr->max_bw = 0; + bbr->bw = 0; + + bbr->cycle_count = 0; + + bbr->extra_acked = 0; + + bbr->bytes_lost_in_round = 0; + bbr->loss_events_in_round = 0; + + bbr->offload_budget = 0; + + bbr->probe_up_cnt = UINT64_MAX; + bbr->cycle_stamp = UINT64_MAX; + bbr->ack_phase = 0; + bbr->bw_probe_wait = 0; + bbr->bw_probe_samples = 0; + bbr->bw_probe_up_rounds = 0; + bbr->bw_probe_up_acks = 0; + + bbr->inflight_hi = UINT64_MAX; + + bbr->probe_rtt_expired = 0; + bbr->probe_rtt_min_delay = UINT64_MAX; + bbr->probe_rtt_min_stamp = initial_ts; + + bbr->in_loss_recovery = 0; + bbr->round_count_at_recovery = UINT64_MAX; + + bbr->max_inflight = 0; + + bbr->congestion_recovery_start_ts = UINT64_MAX; +} + +static void bbr_reset_congestion_signals(ngtcp2_cc_bbr *bbr) { + bbr->loss_in_round = 0; + bbr->bw_latest = 0; + bbr->inflight_latest = 0; +} + +static void bbr_reset_lower_bounds(ngtcp2_cc_bbr *bbr) { + bbr->bw_lo = UINT64_MAX; + bbr->inflight_lo = UINT64_MAX; +} + +static void bbr_init_round_counting(ngtcp2_cc_bbr *bbr) { + bbr->next_round_delivered = 0; + bbr->round_start = 0; + bbr->round_count = 0; +} + +static void bbr_reset_full_bw(ngtcp2_cc_bbr *bbr) { + bbr->full_bw = 0; + bbr->full_bw_count = 0; + bbr->full_bw_now = 0; +} + +static void bbr_check_full_bw_reached(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + if (bbr->full_bw_now || bbr->rst->rs.is_app_limited) { + return; + } + + if (cstat->delivery_rate_sec * 100 >= bbr->full_bw * 125) { + bbr_reset_full_bw(bbr); + bbr->full_bw = cstat->delivery_rate_sec; + + return; + } + + if (!bbr->round_start) { + return; + } + + ++bbr->full_bw_count; + + bbr->full_bw_now = bbr->full_bw_count >= 3; + if (!bbr->full_bw_now) { + return; + } + + bbr->full_bw_reached = 1; + + ngtcp2_log_info(bbr->cc.log, NGTCP2_LOG_EVENT_CCA, + "bbr reached full bandwidth, full_bw=%" PRIu64, bbr->full_bw); +} + +static void bbr_check_startup_high_loss(ngtcp2_cc_bbr *bbr) { + if (bbr->full_bw_reached || bbr->loss_events_in_round <= 6 || + (bbr->in_loss_recovery && + bbr->round_count <= bbr->round_count_at_recovery) || + !is_inflight_too_high(&bbr->rst->rs)) { + return; + } + + bbr->full_bw_reached = 1; + bbr->inflight_hi = ngtcp2_max_uint64(bbr_bdp_multiple(bbr, bbr->cwnd_gain_h), + bbr->inflight_latest); +} + +static void bbr_init_pacing_rate(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat) { + cstat->pacing_interval = NGTCP2_MILLISECONDS * 100 / + NGTCP2_BBR_STARTUP_PACING_GAIN_H / bbr->initial_cwnd; +} + +static void bbr_set_pacing_rate_with_gain(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + uint64_t pacing_gain_h) { + ngtcp2_duration interval; + + if (bbr->bw == 0) { + return; + } + + interval = NGTCP2_SECONDS * 100 * 100 / pacing_gain_h / bbr->bw / + (100 - NGTCP2_BBR_PACING_MARGIN_PERCENT); + + if (bbr->full_bw_reached || interval < cstat->pacing_interval) { + cstat->pacing_interval = interval; + } +} + +static void bbr_set_pacing_rate(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat) { + bbr_set_pacing_rate_with_gain(bbr, cstat, bbr->pacing_gain_h); +} + +static void bbr_enter_startup(ngtcp2_cc_bbr *bbr) { + ngtcp2_log_info(bbr->cc.log, NGTCP2_LOG_EVENT_CCA, "bbr enter Startup"); + + bbr->state = NGTCP2_BBR_STATE_STARTUP; + bbr->pacing_gain_h = NGTCP2_BBR_STARTUP_PACING_GAIN_H; + bbr->cwnd_gain_h = NGTCP2_BBR_DEFAULT_CWND_GAIN_H; +} + +static void bbr_check_startup_done(ngtcp2_cc_bbr *bbr) { + bbr_check_startup_high_loss(bbr); + + if (bbr->state == NGTCP2_BBR_STATE_STARTUP && bbr->full_bw_reached) { + bbr_enter_drain(bbr); + } +} + +static void bbr_on_transmit(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + bbr_handle_restart_from_idle(bbr, cstat, ts); +} + +static void bbr_update_on_ack(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, ngtcp2_tstamp ts) { + bbr_update_model_and_state(bbr, cstat, ack, ts); + bbr_update_control_parameters(bbr, cstat, ack); +} + +static void bbr_update_model_and_state(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, + ngtcp2_tstamp ts) { + bbr_update_latest_delivery_signals(bbr, cstat); + bbr_update_congestion_signals(bbr, cstat, ack); + bbr_update_ack_aggregation(bbr, cstat, ack, ts); + bbr_check_full_bw_reached(bbr, cstat); + bbr_check_startup_done(bbr); + bbr_check_drain(bbr, cstat, ts); + bbr_update_probe_bw_cycle_phase(bbr, cstat, ack, ts); + bbr_update_min_rtt(bbr, ack, ts); + bbr_check_probe_rtt(bbr, cstat, ts); + bbr_advance_latest_delivery_signals(bbr, cstat); + bbr_bound_bw_for_model(bbr); +} + +static void bbr_update_control_parameters(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack) { + bbr_set_pacing_rate(bbr, cstat); + bbr_set_send_quantum(bbr, cstat); + bbr_set_cwnd(bbr, cstat, ack); +} + +static void bbr_update_on_loss(ngtcp2_cc_bbr *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_pkt *pkt, ngtcp2_tstamp ts) { + bbr_handle_lost_packet(cc, cstat, pkt, ts); +} + +static void bbr_update_latest_delivery_signals(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + bbr->loss_round_start = 0; + bbr->bw_latest = ngtcp2_max_uint64(bbr->bw_latest, cstat->delivery_rate_sec); + bbr->inflight_latest = + ngtcp2_max_uint64(bbr->inflight_latest, bbr->rst->rs.delivered); + + if (bbr->rst->rs.prior_delivered >= bbr->loss_round_delivered) { + bbr->loss_round_delivered = bbr->rst->delivered; + bbr->loss_round_start = 1; + } +} + +static void bbr_advance_latest_delivery_signals(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + if (bbr->loss_round_start) { + bbr->bw_latest = cstat->delivery_rate_sec; + bbr->inflight_latest = bbr->rst->rs.delivered; + } +} + +static void bbr_update_congestion_signals(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack) { + bbr_update_max_bw(bbr, cstat, ack); + + if (ack->bytes_lost) { + bbr->bytes_lost_in_round += ack->bytes_lost; + ++bbr->loss_events_in_round; + } + + if (!bbr->loss_round_start) { + return; + } + + bbr_adapt_lower_bounds_from_congestion(bbr, cstat); + + bbr->loss_in_round = 0; +} + +static void bbr_adapt_lower_bounds_from_congestion(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + if (bbr_is_in_probe_bw_state(bbr)) { + return; + } + + if (bbr->loss_in_round) { + bbr_init_lower_bounds(bbr, cstat); + bbr_loss_lower_bounds(bbr); + } +} + +static void bbr_init_lower_bounds(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat) { + if (bbr->bw_lo == UINT64_MAX) { + bbr->bw_lo = bbr->max_bw; + } + + if (bbr->inflight_lo == UINT64_MAX) { + bbr->inflight_lo = cstat->cwnd; + } +} + +static void bbr_loss_lower_bounds(ngtcp2_cc_bbr *bbr) { + bbr->bw_lo = ngtcp2_max_uint64( + bbr->bw_latest, bbr->bw_lo * NGTCP2_BBR_BETA_NUMER / NGTCP2_BBR_BETA_DENOM); + bbr->inflight_lo = ngtcp2_max_uint64( + bbr->inflight_latest, + bbr->inflight_lo * NGTCP2_BBR_BETA_NUMER / NGTCP2_BBR_BETA_DENOM); +} + +static void bbr_bound_bw_for_model(ngtcp2_cc_bbr *bbr) { + bbr->bw = ngtcp2_min_uint64(bbr->max_bw, bbr->bw_lo); +} + +static void bbr_update_max_bw(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack) { + bbr_update_round(bbr, ack); + + if (cstat->delivery_rate_sec >= bbr->max_bw || !bbr->rst->rs.is_app_limited) { + ngtcp2_window_filter_update(&bbr->max_bw_filter, cstat->delivery_rate_sec, + bbr->cycle_count); + + bbr->max_bw = ngtcp2_window_filter_get_best(&bbr->max_bw_filter); + } +} + +static void bbr_update_round(ngtcp2_cc_bbr *bbr, const ngtcp2_cc_ack *ack) { + if (ack->pkt_delivered >= bbr->next_round_delivered) { + bbr_start_round(bbr); + + ++bbr->round_count; + ++bbr->rounds_since_bw_probe; + bbr->round_start = 1; + + bbr->bytes_lost_in_round = 0; + bbr->loss_events_in_round = 0; + + bbr->rst->is_cwnd_limited = 0; + + return; + } + + bbr->round_start = 0; +} + +static void bbr_start_round(ngtcp2_cc_bbr *bbr) { + bbr->next_round_delivered = bbr->rst->delivered; +} + +static int bbr_is_in_probe_bw_state(ngtcp2_cc_bbr *bbr) { + switch (bbr->state) { + case NGTCP2_BBR_STATE_PROBE_BW_DOWN: + case NGTCP2_BBR_STATE_PROBE_BW_CRUISE: + case NGTCP2_BBR_STATE_PROBE_BW_REFILL: + case NGTCP2_BBR_STATE_PROBE_BW_UP: + return 1; + default: + return 0; + } +} + +static void bbr_update_ack_aggregation(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, + ngtcp2_tstamp ts) { + ngtcp2_duration interval = ts - bbr->extra_acked_interval_start; + uint64_t expected_delivered = bbr->bw * interval / NGTCP2_SECONDS; + uint64_t extra; + + if (bbr->extra_acked_delivered <= expected_delivered) { + bbr->extra_acked_delivered = 0; + bbr->extra_acked_interval_start = ts; + expected_delivered = 0; + } + + bbr->extra_acked_delivered += ack->bytes_delivered; + extra = bbr->extra_acked_delivered - expected_delivered; + extra = ngtcp2_min_uint64(extra, cstat->cwnd); + + if (bbr->full_bw_reached) { + bbr->extra_acked_filter.window_length = NGTCP2_BBR_EXTRA_ACKED_FILTERLEN; + } else { + bbr->extra_acked_filter.window_length = 1; + } + + ngtcp2_window_filter_update(&bbr->extra_acked_filter, extra, + bbr->round_count); + + bbr->extra_acked = ngtcp2_window_filter_get_best(&bbr->extra_acked_filter); +} + +static void bbr_enter_drain(ngtcp2_cc_bbr *bbr) { + ngtcp2_log_info(bbr->cc.log, NGTCP2_LOG_EVENT_CCA, "bbr enter Drain"); + + bbr->state = NGTCP2_BBR_STATE_DRAIN; + bbr->pacing_gain_h = NGTCP2_BBR_DRAIN_PACING_GAIN_H; + bbr->cwnd_gain_h = NGTCP2_BBR_DEFAULT_CWND_GAIN_H; +} + +static void bbr_check_drain(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + if (bbr->state == NGTCP2_BBR_STATE_DRAIN && + cstat->bytes_in_flight <= bbr_inflight(bbr, cstat, 100)) { + bbr_enter_probe_bw(bbr, ts); + } +} + +static void bbr_enter_probe_bw(ngtcp2_cc_bbr *bbr, ngtcp2_tstamp ts) { + bbr_start_probe_bw_down(bbr, ts); +} + +static void bbr_start_probe_bw_down(ngtcp2_cc_bbr *bbr, ngtcp2_tstamp ts) { + ngtcp2_log_info(bbr->cc.log, NGTCP2_LOG_EVENT_CCA, "bbr start ProbeBW_DOWN"); + + bbr_reset_congestion_signals(bbr); + + bbr->probe_up_cnt = UINT64_MAX; + + bbr_pick_probe_wait(bbr); + + bbr->cycle_stamp = ts; + bbr->ack_phase = NGTCP2_BBR_ACK_PHASE_ACKS_PROBE_STOPPING; + + bbr_start_round(bbr); + + bbr->state = NGTCP2_BBR_STATE_PROBE_BW_DOWN; + bbr->pacing_gain_h = 90; + bbr->cwnd_gain_h = NGTCP2_BBR_DEFAULT_CWND_GAIN_H; +} + +static void bbr_start_probe_bw_cruise(ngtcp2_cc_bbr *bbr) { + ngtcp2_log_info(bbr->cc.log, NGTCP2_LOG_EVENT_CCA, + "bbr start ProbeBW_CRUISE"); + + bbr->state = NGTCP2_BBR_STATE_PROBE_BW_CRUISE; + bbr->pacing_gain_h = 100; + bbr->cwnd_gain_h = NGTCP2_BBR_DEFAULT_CWND_GAIN_H; +} + +static void bbr_start_probe_bw_refill(ngtcp2_cc_bbr *bbr) { + ngtcp2_log_info(bbr->cc.log, NGTCP2_LOG_EVENT_CCA, + "bbr start ProbeBW_REFILL"); + + bbr_reset_lower_bounds(bbr); + + bbr->bw_probe_up_rounds = 0; + bbr->bw_probe_up_acks = 0; + bbr->ack_phase = NGTCP2_BBR_ACK_PHASE_ACKS_REFILLING; + + bbr_start_round(bbr); + + bbr->state = NGTCP2_BBR_STATE_PROBE_BW_REFILL; + bbr->pacing_gain_h = 100; + bbr->cwnd_gain_h = NGTCP2_BBR_DEFAULT_CWND_GAIN_H; +} + +static void bbr_start_probe_bw_up(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat) { + ngtcp2_log_info(bbr->cc.log, NGTCP2_LOG_EVENT_CCA, "bbr start ProbeBW_UP"); + + bbr->ack_phase = NGTCP2_BBR_ACK_PHASE_ACKS_PROBE_STARTING; + + bbr_start_round(bbr); + bbr_reset_full_bw(bbr); + + bbr->full_bw = cstat->delivery_rate_sec; + bbr->state = NGTCP2_BBR_STATE_PROBE_BW_UP; + bbr->pacing_gain_h = 125; + bbr->cwnd_gain_h = 225; + + bbr_raise_inflight_hi_slope(bbr, cstat); +} + +static void bbr_update_probe_bw_cycle_phase(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, + ngtcp2_tstamp ts) { + if (!bbr->full_bw_reached) { + return; + } + + bbr_adapt_upper_bounds(bbr, cstat, ack, ts); + + if (!bbr_is_in_probe_bw_state(bbr)) { + return; + } + + switch (bbr->state) { + case NGTCP2_BBR_STATE_PROBE_BW_DOWN: + if (bbr_is_time_to_probe_bw(bbr, cstat, ts)) { + return; + } + + if (bbr_is_time_to_cruise(bbr, cstat, ts)) { + bbr_start_probe_bw_cruise(bbr); + } + + break; + case NGTCP2_BBR_STATE_PROBE_BW_CRUISE: + if (bbr_is_time_to_probe_bw(bbr, cstat, ts)) { + return; + } + + break; + case NGTCP2_BBR_STATE_PROBE_BW_REFILL: + if (bbr->round_start) { + bbr->bw_probe_samples = 1; + bbr_start_probe_bw_up(bbr, cstat); + } + + break; + case NGTCP2_BBR_STATE_PROBE_BW_UP: + if (bbr_is_time_to_go_down(bbr, cstat)) { + bbr_start_probe_bw_down(bbr, ts); + } + + break; + default: + break; + } +} + +static int bbr_is_time_to_cruise(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + (void)ts; + + if (cstat->bytes_in_flight > bbr_inflight_with_headroom(bbr, cstat)) { + return 0; + } + + if (cstat->bytes_in_flight <= bbr_inflight(bbr, cstat, 100)) { + return 1; + } + + return 0; +} + +static int bbr_is_time_to_go_down(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat) { + if (bbr->rst->is_cwnd_limited && cstat->cwnd >= bbr->inflight_hi) { + bbr_reset_full_bw(bbr); + bbr->full_bw = cstat->delivery_rate_sec; + } else if (bbr->full_bw_now) { + return 1; + } + + return 0; +} + +static int bbr_has_elapsed_in_phase(ngtcp2_cc_bbr *bbr, + ngtcp2_duration interval, + ngtcp2_tstamp ts) { + return ts > bbr->cycle_stamp + interval; +} + +static uint64_t bbr_inflight_with_headroom(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + uint64_t headroom; + uint64_t mpcwnd; + if (bbr->inflight_hi == UINT64_MAX) { + return UINT64_MAX; + } + + headroom = ngtcp2_max_uint64(cstat->max_tx_udp_payload_size, + bbr->inflight_hi * NGTCP2_BBR_HEADROOM_NUMER / + NGTCP2_BBR_HEADROOM_DENOM); + mpcwnd = min_pipe_cwnd(cstat->max_tx_udp_payload_size); + + if (bbr->inflight_hi > headroom) { + return ngtcp2_max_uint64(bbr->inflight_hi - headroom, mpcwnd); + } + + return mpcwnd; +} + +static void bbr_raise_inflight_hi_slope(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + uint64_t growth_this_round = cstat->max_tx_udp_payload_size + << bbr->bw_probe_up_rounds; + + bbr->bw_probe_up_rounds = ngtcp2_min_size(bbr->bw_probe_up_rounds + 1, 30); + bbr->probe_up_cnt = ngtcp2_max_uint64(cstat->cwnd / growth_this_round, 1) * + cstat->max_tx_udp_payload_size; +} + +static void bbr_probe_inflight_hi_upward(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack) { + uint64_t delta; + + if (!bbr->rst->is_cwnd_limited || cstat->cwnd < bbr->inflight_hi) { + return; + } + + bbr->bw_probe_up_acks += ack->bytes_delivered; + + if (bbr->bw_probe_up_acks >= bbr->probe_up_cnt) { + delta = bbr->bw_probe_up_acks / bbr->probe_up_cnt; + bbr->bw_probe_up_acks -= delta * bbr->probe_up_cnt; + bbr->inflight_hi += delta * cstat->max_tx_udp_payload_size; + } + + if (bbr->round_start) { + bbr_raise_inflight_hi_slope(bbr, cstat); + } +} + +static void bbr_adapt_upper_bounds(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, ngtcp2_tstamp ts) { + if (bbr->ack_phase == NGTCP2_BBR_ACK_PHASE_ACKS_PROBE_STARTING && + bbr->round_start) { + bbr->ack_phase = NGTCP2_BBR_ACK_PHASE_ACKS_PROBE_FEEDBACK; + } + + if (bbr->ack_phase == NGTCP2_BBR_ACK_PHASE_ACKS_PROBE_STOPPING && + bbr->round_start) { + if (bbr_is_in_probe_bw_state(bbr) && !bbr->rst->rs.is_app_limited) { + bbr_advance_max_bw_filter(bbr); + } + } + + if (!bbr_check_inflight_too_high(bbr, cstat, ts)) { + if (bbr->inflight_hi == UINT64_MAX) { + return; + } + + if (bbr->rst->rs.tx_in_flight > bbr->inflight_hi) { + bbr->inflight_hi = bbr->rst->rs.tx_in_flight; + } + + if (bbr->state == NGTCP2_BBR_STATE_PROBE_BW_UP) { + bbr_probe_inflight_hi_upward(bbr, cstat, ack); + } + } +} + +static int bbr_is_time_to_probe_bw(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + if (bbr_has_elapsed_in_phase(bbr, bbr->bw_probe_wait, ts) || + bbr_is_reno_coexistence_probe_time(bbr, cstat)) { + bbr_start_probe_bw_refill(bbr); + + return 1; + } + + return 0; +} + +static void bbr_pick_probe_wait(ngtcp2_cc_bbr *bbr) { + uint8_t rand; + + bbr->rand(&rand, 1, &bbr->rand_ctx); + + bbr->rounds_since_bw_probe = (uint64_t)(rand * 2 / 256); + + bbr->rand(&rand, 1, &bbr->rand_ctx); + + bbr->bw_probe_wait = + 2 * NGTCP2_SECONDS + (ngtcp2_tstamp)(NGTCP2_SECONDS * rand / 255); +} + +static int bbr_is_reno_coexistence_probe_time(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + uint64_t reno_rounds = + bbr_target_inflight(bbr, cstat) / cstat->max_tx_udp_payload_size; + + return bbr->rounds_since_bw_probe >= ngtcp2_min_uint64(reno_rounds, 63); +} + +static uint64_t bbr_target_inflight(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + uint64_t bdp = bbr_bdp_multiple(bbr, bbr->cwnd_gain_h); + + return ngtcp2_min_uint64(bdp, cstat->cwnd); +} + +static int bbr_check_inflight_too_high(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + if (is_inflight_too_high(&bbr->rst->rs)) { + if (bbr->bw_probe_samples) { + bbr_handle_inflight_too_high(bbr, cstat, &bbr->rst->rs, ts); + } + + return 1; + } + + return 0; +} + +static int is_inflight_too_high(const ngtcp2_rs *rs) { + return rs->lost * NGTCP2_BBR_LOSS_THRESH_DENOM > + rs->tx_in_flight * NGTCP2_BBR_LOSS_THRESH_NUMER; +} + +static void bbr_handle_inflight_too_high(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + const ngtcp2_rs *rs, + ngtcp2_tstamp ts) { + bbr->bw_probe_samples = 0; + + if (!rs->is_app_limited) { + bbr->inflight_hi = ngtcp2_max_uint64( + rs->tx_in_flight, bbr_target_inflight(bbr, cstat) * + NGTCP2_BBR_BETA_NUMER / NGTCP2_BBR_BETA_DENOM); + } + + if (bbr->state == NGTCP2_BBR_STATE_PROBE_BW_UP) { + bbr_start_probe_bw_down(bbr, ts); + } +} + +static void bbr_note_loss(ngtcp2_cc_bbr *bbr) { + if (bbr->loss_in_round) { + return; + } + + bbr->loss_in_round = 1; + bbr->loss_round_delivered = bbr->rst->delivered; +} + +static void bbr_handle_lost_packet(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_pkt *pkt, ngtcp2_tstamp ts) { + ngtcp2_rs rs = {0}; + + bbr_note_loss(bbr); + + if (!bbr->bw_probe_samples) { + return; + } + + rs.tx_in_flight = pkt->tx_in_flight; + /* bbr->rst->lost is not incremented for pkt yet */ + rs.lost = bbr->rst->lost + pkt->pktlen - pkt->lost; + rs.is_app_limited = pkt->is_app_limited; + + if (is_inflight_too_high(&rs)) { + rs.tx_in_flight = bbr_inflight_hi_from_lost_packet(bbr, &rs, pkt); + + bbr_handle_inflight_too_high(bbr, cstat, &rs, ts); + } +} + +static uint64_t bbr_inflight_hi_from_lost_packet(ngtcp2_cc_bbr *bbr, + const ngtcp2_rs *rs, + const ngtcp2_cc_pkt *pkt) { + uint64_t inflight_prev, lost_prev, lost_prefix; + (void)bbr; + + assert(rs->tx_in_flight >= pkt->pktlen); + + inflight_prev = rs->tx_in_flight - pkt->pktlen; + + assert(rs->lost >= pkt->pktlen); + + lost_prev = rs->lost - pkt->pktlen; + + if (inflight_prev * NGTCP2_BBR_LOSS_THRESH_NUMER < + lost_prev * NGTCP2_BBR_LOSS_THRESH_DENOM) { + return inflight_prev; + } + + lost_prefix = (inflight_prev * NGTCP2_BBR_LOSS_THRESH_NUMER - + lost_prev * NGTCP2_BBR_LOSS_THRESH_DENOM) / + (NGTCP2_BBR_LOSS_THRESH_DENOM - NGTCP2_BBR_LOSS_THRESH_NUMER); + + return inflight_prev + lost_prefix; +} + +static void bbr_update_min_rtt(ngtcp2_cc_bbr *bbr, const ngtcp2_cc_ack *ack, + ngtcp2_tstamp ts) { + int min_rtt_expired; + + bbr->probe_rtt_expired = + ts > bbr->probe_rtt_min_stamp + NGTCP2_BBR_PROBE_RTT_INTERVAL; + + if (ack->rtt != UINT64_MAX && + (ack->rtt < bbr->probe_rtt_min_delay || bbr->probe_rtt_expired)) { + bbr->probe_rtt_min_delay = ack->rtt; + bbr->probe_rtt_min_stamp = ts; + } + + min_rtt_expired = ts > bbr->min_rtt_stamp + NGTCP2_BBR_MIN_RTT_FILTERLEN; + + if (bbr->probe_rtt_min_delay < bbr->min_rtt || min_rtt_expired) { + bbr->min_rtt = bbr->probe_rtt_min_delay; + bbr->min_rtt_stamp = bbr->probe_rtt_min_stamp; + + ngtcp2_log_info(bbr->cc.log, NGTCP2_LOG_EVENT_CCA, + "bbr update min_rtt=%" PRIu64, bbr->min_rtt); + } +} + +static void bbr_check_probe_rtt(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + if (bbr->state != NGTCP2_BBR_STATE_PROBE_RTT && bbr->probe_rtt_expired && + !bbr->idle_restart) { + bbr_enter_probe_rtt(bbr); + bbr_save_cwnd(bbr, cstat); + + bbr->probe_rtt_done_stamp = UINT64_MAX; + bbr->ack_phase = NGTCP2_BBR_ACK_PHASE_ACKS_PROBE_STOPPING; + + bbr_start_round(bbr); + } + + if (bbr->state == NGTCP2_BBR_STATE_PROBE_RTT) { + bbr_handle_probe_rtt(bbr, cstat, ts); + } + + if (bbr->rst->rs.delivered) { + bbr->idle_restart = 0; + } +} + +static void bbr_enter_probe_rtt(ngtcp2_cc_bbr *bbr) { + ngtcp2_log_info(bbr->cc.log, NGTCP2_LOG_EVENT_CCA, "bbr enter ProbeRTT"); + + bbr->state = NGTCP2_BBR_STATE_PROBE_RTT; + bbr->pacing_gain_h = 100; + bbr->cwnd_gain_h = NGTCP2_BBR_PROBE_RTT_CWND_GAIN_H; +} + +static void bbr_handle_probe_rtt(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + bbr_mark_connection_app_limited(bbr, cstat); + + if (bbr->probe_rtt_done_stamp == UINT64_MAX && + cstat->bytes_in_flight <= bbr_probe_rtt_cwnd(bbr, cstat)) { + bbr->probe_rtt_done_stamp = ts + NGTCP2_BBR_PROBE_RTT_DURATION; + bbr->probe_rtt_round_done = 0; + + bbr_start_round(bbr); + + return; + } + + if (bbr->probe_rtt_done_stamp != UINT64_MAX) { + if (bbr->round_start) { + bbr->probe_rtt_round_done = 1; + } + + if (bbr->probe_rtt_round_done) { + bbr_check_probe_rtt_done(bbr, cstat, ts); + } + } +} + +static void bbr_check_probe_rtt_done(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + if (bbr->probe_rtt_done_stamp != UINT64_MAX && + ts > bbr->probe_rtt_done_stamp) { + bbr->probe_rtt_min_stamp = ts; + bbr_restore_cwnd(bbr, cstat); + bbr_exit_probe_rtt(bbr, ts); + } +} + +static void bbr_mark_connection_app_limited(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + uint64_t app_limited = bbr->rst->delivered + cstat->bytes_in_flight; + + if (app_limited) { + bbr->rst->app_limited = app_limited; + } else { + bbr->rst->app_limited = cstat->max_tx_udp_payload_size; + } +} + +static void bbr_exit_probe_rtt(ngtcp2_cc_bbr *bbr, ngtcp2_tstamp ts) { + bbr_reset_lower_bounds(bbr); + + if (bbr->full_bw_reached) { + bbr_start_probe_bw_down(bbr, ts); + bbr_start_probe_bw_cruise(bbr); + } else { + bbr_enter_startup(bbr); + } +} + +static void bbr_handle_restart_from_idle(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + if (cstat->bytes_in_flight == 0 && bbr->rst->app_limited) { + ngtcp2_log_info(bbr->cc.log, NGTCP2_LOG_EVENT_CCA, "bbr restart from idle"); + + bbr->idle_restart = 1; + bbr->extra_acked_interval_start = ts; + + if (bbr_is_in_probe_bw_state(bbr)) { + bbr_set_pacing_rate_with_gain(bbr, cstat, 100); + } else if (bbr->state == NGTCP2_BBR_STATE_PROBE_RTT) { + bbr_check_probe_rtt_done(bbr, cstat, ts); + } + } +} + +static uint64_t bbr_bdp_multiple(ngtcp2_cc_bbr *bbr, uint64_t gain_h) { + uint64_t bdp; + + if (bbr->min_rtt == UINT64_MAX) { + return bbr->initial_cwnd; + } + + bdp = bbr->bw * bbr->min_rtt / NGTCP2_SECONDS; + + return (uint64_t)(bdp * gain_h / 100); +} + +static uint64_t min_pipe_cwnd(size_t max_udp_payload_size) { + return max_udp_payload_size * 4; +} + +static uint64_t bbr_quantization_budget(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat, + uint64_t inflight) { + bbr_update_offload_budget(bbr, cstat); + + inflight = ngtcp2_max_uint64(inflight, bbr->offload_budget); + inflight = + ngtcp2_max_uint64(inflight, min_pipe_cwnd(cstat->max_tx_udp_payload_size)); + + if (bbr->state == NGTCP2_BBR_STATE_PROBE_BW_UP) { + inflight += 2 * cstat->max_tx_udp_payload_size; + } + + return inflight; +} + +static uint64_t bbr_inflight(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + uint64_t gain_h) { + uint64_t inflight = bbr_bdp_multiple(bbr, gain_h); + + return bbr_quantization_budget(bbr, cstat, inflight); +} + +static void bbr_update_max_inflight(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + uint64_t inflight; + + /* Not documented */ + /* bbr_update_aggregation_budget(bbr); */ + + inflight = bbr_bdp_multiple(bbr, bbr->cwnd_gain_h) + bbr->extra_acked; + bbr->max_inflight = bbr_quantization_budget(bbr, cstat, inflight); +} + +static void bbr_update_offload_budget(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + bbr->offload_budget = 3 * cstat->send_quantum; +} + +static void bbr_advance_max_bw_filter(ngtcp2_cc_bbr *bbr) { + ++bbr->cycle_count; +} + +static void bbr_save_cwnd(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat) { + if (!bbr->in_loss_recovery && bbr->state != NGTCP2_BBR_STATE_PROBE_RTT) { + bbr->prior_cwnd = cstat->cwnd; + return; + } + + bbr->prior_cwnd = ngtcp2_max_uint64(bbr->prior_cwnd, cstat->cwnd); +} + +static void bbr_restore_cwnd(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat) { + cstat->cwnd = ngtcp2_max_uint64(cstat->cwnd, bbr->prior_cwnd); +} + +static uint64_t bbr_probe_rtt_cwnd(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + uint64_t probe_rtt_cwnd = + bbr_bdp_multiple(bbr, NGTCP2_BBR_PROBE_RTT_CWND_GAIN_H); + uint64_t mpcwnd = min_pipe_cwnd(cstat->max_tx_udp_payload_size); + + return ngtcp2_max_uint64(probe_rtt_cwnd, mpcwnd); +} + +static void bbr_bound_cwnd_for_probe_rtt(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + uint64_t probe_rtt_cwnd; + + if (bbr->state == NGTCP2_BBR_STATE_PROBE_RTT) { + probe_rtt_cwnd = bbr_probe_rtt_cwnd(bbr, cstat); + + cstat->cwnd = ngtcp2_min_uint64(cstat->cwnd, probe_rtt_cwnd); + } +} + +static void bbr_set_cwnd(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack) { + uint64_t mpcwnd; + + bbr_update_max_inflight(bbr, cstat); + + if (bbr->full_bw_reached) { + cstat->cwnd += ack->bytes_delivered; + cstat->cwnd = ngtcp2_min_uint64(cstat->cwnd, bbr->max_inflight); + } else if (cstat->cwnd < bbr->max_inflight || + bbr->rst->delivered < bbr->initial_cwnd) { + cstat->cwnd += ack->bytes_delivered; + } + + mpcwnd = min_pipe_cwnd(cstat->max_tx_udp_payload_size); + cstat->cwnd = ngtcp2_max_uint64(cstat->cwnd, mpcwnd); + + bbr_bound_cwnd_for_probe_rtt(bbr, cstat); + bbr_bound_cwnd_for_model(bbr, cstat); +} + +static void bbr_bound_cwnd_for_model(ngtcp2_cc_bbr *bbr, + ngtcp2_conn_stat *cstat) { + uint64_t cap = UINT64_MAX; + uint64_t mpcwnd = min_pipe_cwnd(cstat->max_tx_udp_payload_size); + + if (bbr_is_in_probe_bw_state(bbr) && + bbr->state != NGTCP2_BBR_STATE_PROBE_BW_CRUISE) { + cap = bbr->inflight_hi; + } else if (bbr->state == NGTCP2_BBR_STATE_PROBE_RTT || + bbr->state == NGTCP2_BBR_STATE_PROBE_BW_CRUISE) { + cap = bbr_inflight_with_headroom(bbr, cstat); + } + + cap = ngtcp2_min_uint64(cap, bbr->inflight_lo); + cap = ngtcp2_max_uint64(cap, mpcwnd); + + cstat->cwnd = ngtcp2_min_uint64(cstat->cwnd, cap); +} + +static void bbr_set_send_quantum(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat) { + size_t send_quantum = 64 * 1024; + (void)bbr; + + if (cstat->pacing_interval) { + send_quantum = ngtcp2_min_size( + send_quantum, (size_t)(NGTCP2_MILLISECONDS / cstat->pacing_interval)); + } + + cstat->send_quantum = + ngtcp2_max_size(send_quantum, 2 * cstat->max_tx_udp_payload_size); +} + +static int in_congestion_recovery(const ngtcp2_conn_stat *cstat, + ngtcp2_tstamp sent_time) { + return cstat->congestion_recovery_start_ts != UINT64_MAX && + sent_time <= cstat->congestion_recovery_start_ts; +} + +static void bbr_handle_recovery(ngtcp2_cc_bbr *bbr, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack) { + if (bbr->in_loss_recovery) { + if (ack->largest_pkt_sent_ts != UINT64_MAX && + !in_congestion_recovery(cstat, ack->largest_pkt_sent_ts)) { + bbr->in_loss_recovery = 0; + bbr->round_count_at_recovery = UINT64_MAX; + bbr_restore_cwnd(bbr, cstat); + } + + return; + } + + if (bbr->congestion_recovery_start_ts != UINT64_MAX) { + bbr->in_loss_recovery = 1; + bbr->round_count_at_recovery = + bbr->round_start ? bbr->round_count : bbr->round_count + 1; + bbr_save_cwnd(bbr, cstat); + cstat->cwnd = + cstat->bytes_in_flight + + ngtcp2_max_uint64(ack->bytes_delivered, cstat->max_tx_udp_payload_size); + + cstat->congestion_recovery_start_ts = bbr->congestion_recovery_start_ts; + bbr->congestion_recovery_start_ts = UINT64_MAX; + } +} + +static void bbr_cc_on_pkt_lost(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_pkt *pkt, ngtcp2_tstamp ts) { + ngtcp2_cc_bbr *bbr = ngtcp2_struct_of(cc, ngtcp2_cc_bbr, cc); + + if (bbr->state == NGTCP2_BBR_STATE_STARTUP) { + return; + } + + bbr_update_on_loss(bbr, cstat, pkt, ts); +} + +static void bbr_cc_congestion_event(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp sent_ts, uint64_t bytes_lost, + ngtcp2_tstamp ts) { + ngtcp2_cc_bbr *bbr = ngtcp2_struct_of(cc, ngtcp2_cc_bbr, cc); + (void)bytes_lost; + + if (bbr->in_loss_recovery || + bbr->congestion_recovery_start_ts != UINT64_MAX || + in_congestion_recovery(cstat, sent_ts)) { + return; + } + + bbr->congestion_recovery_start_ts = ts; +} + +static void bbr_cc_on_spurious_congestion(ngtcp2_cc *cc, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + ngtcp2_cc_bbr *bbr = ngtcp2_struct_of(cc, ngtcp2_cc_bbr, cc); + (void)ts; + + bbr->congestion_recovery_start_ts = UINT64_MAX; + cstat->congestion_recovery_start_ts = UINT64_MAX; + + if (bbr->in_loss_recovery) { + bbr->in_loss_recovery = 0; + bbr->round_count_at_recovery = UINT64_MAX; + bbr_restore_cwnd(bbr, cstat); + } +} + +static void bbr_cc_on_persistent_congestion(ngtcp2_cc *cc, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + ngtcp2_cc_bbr *bbr = ngtcp2_struct_of(cc, ngtcp2_cc_bbr, cc); + (void)ts; + + cstat->congestion_recovery_start_ts = UINT64_MAX; + bbr->congestion_recovery_start_ts = UINT64_MAX; + bbr->in_loss_recovery = 0; + bbr->round_count_at_recovery = UINT64_MAX; + + bbr_save_cwnd(bbr, cstat); + cstat->cwnd = cstat->bytes_in_flight + cstat->max_tx_udp_payload_size; + cstat->cwnd = ngtcp2_max_uint64( + cstat->cwnd, min_pipe_cwnd(cstat->max_tx_udp_payload_size)); +} + +static void bbr_cc_on_ack_recv(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, ngtcp2_tstamp ts) { + ngtcp2_cc_bbr *bbr = ngtcp2_struct_of(cc, ngtcp2_cc_bbr, cc); + + bbr_handle_recovery(bbr, cstat, ack); + bbr_update_on_ack(bbr, cstat, ack, ts); +} + +static void bbr_cc_on_pkt_sent(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_pkt *pkt) { + ngtcp2_cc_bbr *bbr = ngtcp2_struct_of(cc, ngtcp2_cc_bbr, cc); + + bbr_on_transmit(bbr, cstat, pkt->sent_ts); +} + +static void bbr_cc_reset(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + ngtcp2_cc_bbr *bbr = ngtcp2_struct_of(cc, ngtcp2_cc_bbr, cc); + + bbr_on_init(bbr, cstat, ts); +} + +void ngtcp2_cc_bbr_init(ngtcp2_cc_bbr *bbr, ngtcp2_log *log, + ngtcp2_conn_stat *cstat, ngtcp2_rst *rst, + ngtcp2_tstamp initial_ts, ngtcp2_rand rand, + const ngtcp2_rand_ctx *rand_ctx) { + memset(bbr, 0, sizeof(*bbr)); + + bbr->cc.log = log; + bbr->cc.on_pkt_lost = bbr_cc_on_pkt_lost; + bbr->cc.congestion_event = bbr_cc_congestion_event; + bbr->cc.on_spurious_congestion = bbr_cc_on_spurious_congestion; + bbr->cc.on_persistent_congestion = bbr_cc_on_persistent_congestion; + bbr->cc.on_ack_recv = bbr_cc_on_ack_recv; + bbr->cc.on_pkt_sent = bbr_cc_on_pkt_sent; + bbr->cc.reset = bbr_cc_reset; + + bbr->rst = rst; + bbr->rand = rand; + bbr->rand_ctx = *rand_ctx; + bbr->initial_cwnd = cstat->cwnd; + + bbr_on_init(bbr, cstat, initial_ts); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_bbr.h b/contrib/libs/ngtcp2/lib/ngtcp2_bbr.h new file mode 100644 index 0000000000..f266ec5d71 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_bbr.h @@ -0,0 +1,141 @@ +/* + * ngtcp2 + * + * Copyright (c) 2021 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_BBR_H +#define NGTCP2_BBR_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_cc.h" +#include "ngtcp2_window_filter.h" + +typedef struct ngtcp2_rst ngtcp2_rst; + +typedef enum ngtcp2_bbr_state { + NGTCP2_BBR_STATE_STARTUP, + NGTCP2_BBR_STATE_DRAIN, + NGTCP2_BBR_STATE_PROBE_BW_DOWN, + NGTCP2_BBR_STATE_PROBE_BW_CRUISE, + NGTCP2_BBR_STATE_PROBE_BW_REFILL, + NGTCP2_BBR_STATE_PROBE_BW_UP, + NGTCP2_BBR_STATE_PROBE_RTT, +} ngtcp2_bbr_state; + +typedef enum ngtcp2_bbr_ack_phase { + NGTCP2_BBR_ACK_PHASE_ACKS_PROBE_STARTING, + NGTCP2_BBR_ACK_PHASE_ACKS_PROBE_STOPPING, + NGTCP2_BBR_ACK_PHASE_ACKS_PROBE_FEEDBACK, + NGTCP2_BBR_ACK_PHASE_ACKS_REFILLING, +} ngtcp2_bbr_ack_phase; + +/* + * ngtcp2_cc_bbr is BBR v2 congestion controller, described in + * https://datatracker.ietf.org/doc/html/draft-cardwell-iccrg-bbr-congestion-control-01 + */ +typedef struct ngtcp2_cc_bbr { + ngtcp2_cc cc; + + uint64_t initial_cwnd; + ngtcp2_rst *rst; + ngtcp2_rand rand; + ngtcp2_rand_ctx rand_ctx; + + /* max_bw_filter for tracking the maximum recent delivery rate + samples for estimating max_bw. */ + ngtcp2_window_filter max_bw_filter; + + ngtcp2_window_filter extra_acked_filter; + + ngtcp2_duration min_rtt; + ngtcp2_tstamp min_rtt_stamp; + ngtcp2_tstamp probe_rtt_done_stamp; + int probe_rtt_round_done; + uint64_t prior_cwnd; + int idle_restart; + ngtcp2_tstamp extra_acked_interval_start; + uint64_t extra_acked_delivered; + + /* Congestion signals */ + int loss_in_round; + uint64_t bw_latest; + uint64_t inflight_latest; + + /* Lower bounds */ + uint64_t bw_lo; + uint64_t inflight_lo; + + /* Round counting */ + uint64_t next_round_delivered; + int round_start; + uint64_t round_count; + + /* Full pipe */ + uint64_t full_bw; + size_t full_bw_count; + int full_bw_reached; + int full_bw_now; + + /* Pacing rate */ + uint64_t pacing_gain_h; + + ngtcp2_bbr_state state; + uint64_t cwnd_gain_h; + + int loss_round_start; + uint64_t loss_round_delivered; + uint64_t rounds_since_bw_probe; + uint64_t max_bw; + uint64_t bw; + uint64_t cycle_count; + uint64_t extra_acked; + uint64_t bytes_lost_in_round; + size_t loss_events_in_round; + uint64_t offload_budget; + uint64_t probe_up_cnt; + ngtcp2_tstamp cycle_stamp; + ngtcp2_bbr_ack_phase ack_phase; + ngtcp2_duration bw_probe_wait; + int bw_probe_samples; + size_t bw_probe_up_rounds; + uint64_t bw_probe_up_acks; + uint64_t inflight_hi; + int probe_rtt_expired; + ngtcp2_duration probe_rtt_min_delay; + ngtcp2_tstamp probe_rtt_min_stamp; + int in_loss_recovery; + uint64_t round_count_at_recovery; + uint64_t max_inflight; + ngtcp2_tstamp congestion_recovery_start_ts; +} ngtcp2_cc_bbr; + +void ngtcp2_cc_bbr_init(ngtcp2_cc_bbr *bbr, ngtcp2_log *log, + ngtcp2_conn_stat *cstat, ngtcp2_rst *rst, + ngtcp2_tstamp initial_ts, ngtcp2_rand rand, + const ngtcp2_rand_ctx *rand_ctx); + +#endif /* !defined(NGTCP2_BBR_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_buf.c b/contrib/libs/ngtcp2/lib/ngtcp2_buf.c new file mode 100644 index 0000000000..75326d6b76 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_buf.c @@ -0,0 +1,56 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_buf.h" +#include "ngtcp2_mem.h" + +void ngtcp2_buf_init(ngtcp2_buf *buf, uint8_t *begin, size_t len) { + buf->begin = buf->pos = buf->last = begin; + buf->end = begin + len; +} + +void ngtcp2_buf_reset(ngtcp2_buf *buf) { buf->pos = buf->last = buf->begin; } + +size_t ngtcp2_buf_cap(const ngtcp2_buf *buf) { + return (size_t)(buf->end - buf->begin); +} + +int ngtcp2_buf_chain_new(ngtcp2_buf_chain **pbufchain, size_t len, + const ngtcp2_mem *mem) { + *pbufchain = ngtcp2_mem_malloc(mem, sizeof(ngtcp2_buf_chain) + len); + if (*pbufchain == NULL) { + return NGTCP2_ERR_NOMEM; + } + + (*pbufchain)->next = NULL; + + ngtcp2_buf_init(&(*pbufchain)->buf, + (uint8_t *)(*pbufchain) + sizeof(ngtcp2_buf_chain), len); + + return 0; +} + +void ngtcp2_buf_chain_del(ngtcp2_buf_chain *bufchain, const ngtcp2_mem *mem) { + ngtcp2_mem_free(mem, bufchain); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_buf.h b/contrib/libs/ngtcp2/lib/ngtcp2_buf.h new file mode 100644 index 0000000000..e87adb1199 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_buf.h @@ -0,0 +1,108 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_BUF_H +#define NGTCP2_BUF_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +typedef struct ngtcp2_buf { + /* begin points to the beginning of the buffer. */ + uint8_t *begin; + /* end points to the one beyond of the last byte of the buffer */ + uint8_t *end; + /* pos points to the start of data. Typically, this points to the + point that next data should be read. Initially, it points to + |begin|. */ + uint8_t *pos; + /* last points to the one beyond of the last data of the buffer. + Typically, new data is written at this point. Initially, it + points to |begin|. */ + uint8_t *last; +} ngtcp2_buf; + +/* + * ngtcp2_buf_init initializes |buf| with the given buffer. + */ +void ngtcp2_buf_init(ngtcp2_buf *buf, uint8_t *begin, size_t len); + +/* + * ngtcp2_buf_reset resets pos and last fields to match begin field to + * make ngtcp2_buf_len(buf) return 0. + */ +void ngtcp2_buf_reset(ngtcp2_buf *buf); + +/* + * ngtcp2_buf_left returns the number of additional bytes which can be + * written to the underlying buffer. In other words, it returns + * buf->end - buf->last. + */ +#define ngtcp2_buf_left(BUF) (size_t)((BUF)->end - (BUF)->last) + +/* + * ngtcp2_buf_len returns the number of bytes left to read. In other + * words, it returns buf->last - buf->pos. + */ +#define ngtcp2_buf_len(BUF) (size_t)((BUF)->last - (BUF)->pos) + +/* + * ngtcp2_buf_cap returns the capacity of the buffer. In other words, + * it returns buf->end - buf->begin. + */ +size_t ngtcp2_buf_cap(const ngtcp2_buf *buf); + +/* + * ngtcp2_buf_chain is a linked list of ngtcp2_buf. + */ +typedef struct ngtcp2_buf_chain ngtcp2_buf_chain; + +struct ngtcp2_buf_chain { + ngtcp2_buf_chain *next; + ngtcp2_buf buf; +}; + +/* + * ngtcp2_buf_chain_new creates new ngtcp2_buf_chain and initializes + * the internal buffer with |len| bytes space. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + */ +int ngtcp2_buf_chain_new(ngtcp2_buf_chain **pbufchain, size_t len, + const ngtcp2_mem *mem); + +/* + * ngtcp2_buf_chain_del deletes the resource allocated by |bufchain|. + * It also deletes the memory pointed by |bufchain|. + */ +void ngtcp2_buf_chain_del(ngtcp2_buf_chain *bufchain, const ngtcp2_mem *mem); + +#endif /* !defined(NGTCP2_BUF_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_cc.c b/contrib/libs/ngtcp2/lib/ngtcp2_cc.c new file mode 100644 index 0000000000..1ff59f315c --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_cc.c @@ -0,0 +1,511 @@ +/* + * ngtcp2 + * + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_cc.h" + +#include <assert.h> +#include <string.h> + +#include "ngtcp2_log.h" +#include "ngtcp2_macro.h" +#include "ngtcp2_mem.h" +#include "ngtcp2_rcvry.h" +#include "ngtcp2_conn_stat.h" +#include "ngtcp2_rst.h" +#include "ngtcp2_unreachable.h" + +uint64_t ngtcp2_cc_compute_initcwnd(size_t max_udp_payload_size) { + uint64_t n = 2 * max_udp_payload_size; + n = ngtcp2_max_uint64(n, 14720); + return ngtcp2_min_uint64(10 * max_udp_payload_size, n); +} + +ngtcp2_cc_pkt *ngtcp2_cc_pkt_init(ngtcp2_cc_pkt *pkt, int64_t pkt_num, + size_t pktlen, ngtcp2_pktns_id pktns_id, + ngtcp2_tstamp sent_ts, uint64_t lost, + uint64_t tx_in_flight, int is_app_limited) { + pkt->pkt_num = pkt_num; + pkt->pktlen = pktlen; + pkt->pktns_id = pktns_id; + pkt->sent_ts = sent_ts; + pkt->lost = lost; + pkt->tx_in_flight = tx_in_flight; + pkt->is_app_limited = is_app_limited; + + return pkt; +} + +static void reno_cc_reset(ngtcp2_cc_reno *reno) { reno->pending_add = 0; } + +void ngtcp2_cc_reno_init(ngtcp2_cc_reno *reno, ngtcp2_log *log) { + memset(reno, 0, sizeof(*reno)); + + reno->cc.log = log; + reno->cc.on_pkt_acked = ngtcp2_cc_reno_cc_on_pkt_acked; + reno->cc.congestion_event = ngtcp2_cc_reno_cc_congestion_event; + reno->cc.on_persistent_congestion = + ngtcp2_cc_reno_cc_on_persistent_congestion; + reno->cc.reset = ngtcp2_cc_reno_cc_reset; + + reno_cc_reset(reno); +} + +static int in_congestion_recovery(const ngtcp2_conn_stat *cstat, + ngtcp2_tstamp sent_time) { + return cstat->congestion_recovery_start_ts != UINT64_MAX && + sent_time <= cstat->congestion_recovery_start_ts; +} + +void ngtcp2_cc_reno_cc_on_pkt_acked(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_pkt *pkt, + ngtcp2_tstamp ts) { + ngtcp2_cc_reno *reno = ngtcp2_struct_of(cc, ngtcp2_cc_reno, cc); + uint64_t m; + (void)ts; + + if (in_congestion_recovery(cstat, pkt->sent_ts) || pkt->is_app_limited) { + return; + } + + if (cstat->cwnd < cstat->ssthresh) { + cstat->cwnd += pkt->pktlen; + ngtcp2_log_info(reno->cc.log, NGTCP2_LOG_EVENT_CCA, + "pkn=%" PRId64 " acked, slow start cwnd=%" PRIu64, + pkt->pkt_num, cstat->cwnd); + return; + } + + m = cstat->max_tx_udp_payload_size * pkt->pktlen + reno->pending_add; + reno->pending_add = m % cstat->cwnd; + + cstat->cwnd += m / cstat->cwnd; +} + +void ngtcp2_cc_reno_cc_congestion_event(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp sent_ts, + uint64_t bytes_lost, ngtcp2_tstamp ts) { + ngtcp2_cc_reno *reno = ngtcp2_struct_of(cc, ngtcp2_cc_reno, cc); + uint64_t min_cwnd; + (void)bytes_lost; + + if (in_congestion_recovery(cstat, sent_ts)) { + return; + } + + cstat->congestion_recovery_start_ts = ts; + cstat->cwnd >>= NGTCP2_LOSS_REDUCTION_FACTOR_BITS; + min_cwnd = 2 * cstat->max_tx_udp_payload_size; + cstat->cwnd = ngtcp2_max_uint64(cstat->cwnd, min_cwnd); + cstat->ssthresh = cstat->cwnd; + + reno->pending_add = 0; + + ngtcp2_log_info(reno->cc.log, NGTCP2_LOG_EVENT_CCA, + "reduce cwnd because of packet loss cwnd=%" PRIu64, + cstat->cwnd); +} + +void ngtcp2_cc_reno_cc_on_persistent_congestion(ngtcp2_cc *cc, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + (void)cc; + (void)ts; + + cstat->cwnd = 2 * cstat->max_tx_udp_payload_size; + cstat->congestion_recovery_start_ts = UINT64_MAX; +} + +void ngtcp2_cc_reno_cc_reset(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + ngtcp2_cc_reno *reno = ngtcp2_struct_of(cc, ngtcp2_cc_reno, cc); + (void)cstat; + (void)ts; + + reno_cc_reset(reno); +} + +static void cubic_vars_reset(ngtcp2_cubic_vars *v) { + v->cwnd_prior = 0; + v->w_max = 0; + v->k = 0; + v->epoch_start = UINT64_MAX; + v->w_est = 0; + + v->state = NGTCP2_CUBIC_STATE_INITIAL; + v->app_limited_start_ts = UINT64_MAX; + v->app_limited_duration = 0; + v->pending_bytes_delivered = 0; + v->pending_est_bytes_delivered = 0; +} + +static void cubic_cc_reset(ngtcp2_cc_cubic *cubic) { + cubic_vars_reset(&cubic->current); + cubic_vars_reset(&cubic->undo.v); + cubic->undo.cwnd = 0; + cubic->undo.ssthresh = 0; + + cubic->hs.current_round_min_rtt = UINT64_MAX; + cubic->hs.last_round_min_rtt = UINT64_MAX; + cubic->hs.curr_rtt = UINT64_MAX; + cubic->hs.rtt_sample_count = 0; + cubic->hs.css_baseline_min_rtt = UINT64_MAX; + cubic->hs.css_round = 0; + + cubic->next_round_delivered = 0; +} + +void ngtcp2_cc_cubic_init(ngtcp2_cc_cubic *cubic, ngtcp2_log *log, + ngtcp2_rst *rst) { + memset(cubic, 0, sizeof(*cubic)); + + cubic->cc.log = log; + cubic->cc.on_ack_recv = ngtcp2_cc_cubic_cc_on_ack_recv; + cubic->cc.congestion_event = ngtcp2_cc_cubic_cc_congestion_event; + cubic->cc.on_spurious_congestion = ngtcp2_cc_cubic_cc_on_spurious_congestion; + cubic->cc.on_persistent_congestion = + ngtcp2_cc_cubic_cc_on_persistent_congestion; + cubic->cc.reset = ngtcp2_cc_cubic_cc_reset; + + cubic->rst = rst; + + cubic_cc_reset(cubic); +} + +uint64_t ngtcp2_cbrt(uint64_t n) { + size_t s; + uint64_t y = 0; + uint64_t b; + + for (s = 63; s > 0; s -= 3) { + y <<= 1; + b = 3 * y * (y + 1) + 1; + if ((n >> s) >= b) { + n -= b << s; + y++; + } + } + + y <<= 1; + b = 3 * y * (y + 1) + 1; + if (n >= b) { + n -= b; + y++; + } + + return y; +} + +/* RFC 9406 HyStart++ constants */ +#define NGTCP2_HS_MIN_RTT_THRESH (4 * NGTCP2_MILLISECONDS) +#define NGTCP2_HS_MAX_RTT_THRESH (16 * NGTCP2_MILLISECONDS) +#define NGTCP2_HS_MIN_RTT_DIVISOR 8 +#define NGTCP2_HS_N_RTT_SAMPLE 8 +#define NGTCP2_HS_CSS_GROWTH_DIVISOR 4 +#define NGTCP2_HS_CSS_ROUNDS 5 + +static uint64_t cubic_cc_compute_w_cubic(ngtcp2_cc_cubic *cubic, + const ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + ngtcp2_duration t = ts - cubic->current.epoch_start; + uint64_t delta; + uint64_t tx = (t << 10) / NGTCP2_SECONDS; + uint64_t kx = (cubic->current.k << 10) / NGTCP2_SECONDS; + uint64_t time_delta; + + if (tx < kx) { + return UINT64_MAX; + } + + time_delta = tx - kx; + + delta = cstat->max_tx_udp_payload_size * + ((((time_delta * time_delta) >> 10) * time_delta) >> 10) * 4 / 10; + + return cubic->current.w_max + (delta >> 10); +} + +void ngtcp2_cc_cubic_cc_on_ack_recv(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, + ngtcp2_tstamp ts) { + ngtcp2_cc_cubic *cubic = ngtcp2_struct_of(cc, ngtcp2_cc_cubic, cc); + uint64_t w_cubic, w_cubic_next, target, m; + ngtcp2_duration rtt_thresh; + int round_start; + + if (in_congestion_recovery(cstat, ack->largest_pkt_sent_ts)) { + return; + } + + if (cubic->current.state == NGTCP2_CUBIC_STATE_CONGESTION_AVOIDANCE) { + if (cubic->rst->rs.is_app_limited && !cubic->rst->is_cwnd_limited) { + if (cubic->current.app_limited_start_ts == UINT64_MAX) { + cubic->current.app_limited_start_ts = ts; + } + + return; + } + + if (cubic->current.app_limited_start_ts != UINT64_MAX) { + cubic->current.app_limited_duration += + ts - cubic->current.app_limited_start_ts; + cubic->current.app_limited_start_ts = UINT64_MAX; + } + } else if (cubic->rst->rs.is_app_limited && !cubic->rst->is_cwnd_limited) { + return; + } + + round_start = ack->pkt_delivered >= cubic->next_round_delivered; + if (round_start) { + cubic->next_round_delivered = cubic->rst->delivered; + + cubic->rst->is_cwnd_limited = 0; + } + + if (cstat->cwnd < cstat->ssthresh) { + /* slow-start */ + if (cubic->hs.css_round) { + cstat->cwnd += ack->bytes_delivered / NGTCP2_HS_CSS_GROWTH_DIVISOR; + } else { + cstat->cwnd += ack->bytes_delivered; + } + + ngtcp2_log_info(cubic->cc.log, NGTCP2_LOG_EVENT_CCA, + "%" PRIu64 " bytes acked, slow start cwnd=%" PRIu64, + ack->bytes_delivered, cstat->cwnd); + + if (round_start) { + cubic->hs.last_round_min_rtt = cubic->hs.current_round_min_rtt; + cubic->hs.current_round_min_rtt = UINT64_MAX; + cubic->hs.rtt_sample_count = 0; + + if (cubic->hs.css_round) { + ++cubic->hs.css_round; + } + } + + cubic->hs.current_round_min_rtt = + ngtcp2_min_uint64(cubic->hs.current_round_min_rtt, ack->rtt); + ++cubic->hs.rtt_sample_count; + + if (cubic->hs.css_round) { + if (cubic->hs.current_round_min_rtt < cubic->hs.css_baseline_min_rtt) { + cubic->hs.css_baseline_min_rtt = UINT64_MAX; + cubic->hs.css_round = 0; + return; + } + + if (cubic->hs.css_round >= NGTCP2_HS_CSS_ROUNDS) { + ngtcp2_log_info(cubic->cc.log, NGTCP2_LOG_EVENT_CCA, + "HyStart++ exit slow start"); + + cstat->ssthresh = cstat->cwnd; + } + + return; + } + + if (cubic->hs.rtt_sample_count >= NGTCP2_HS_N_RTT_SAMPLE && + cubic->hs.current_round_min_rtt != UINT64_MAX && + cubic->hs.last_round_min_rtt != UINT64_MAX) { + rtt_thresh = + ngtcp2_max_uint64(NGTCP2_HS_MIN_RTT_THRESH, + ngtcp2_min_uint64(cubic->hs.last_round_min_rtt / + NGTCP2_HS_MIN_RTT_DIVISOR, + NGTCP2_HS_MAX_RTT_THRESH)); + + if (cubic->hs.current_round_min_rtt >= + cubic->hs.last_round_min_rtt + rtt_thresh) { + cubic->hs.css_baseline_min_rtt = cubic->hs.current_round_min_rtt; + cubic->hs.css_round = 1; + } + } + + return; + } + + /* congestion avoidance */ + + switch (cubic->current.state) { + case NGTCP2_CUBIC_STATE_INITIAL: + m = cstat->max_tx_udp_payload_size * ack->bytes_delivered + + cubic->current.pending_bytes_delivered; + cstat->cwnd += m / cstat->cwnd; + cubic->current.pending_bytes_delivered = m % cstat->cwnd; + return; + case NGTCP2_CUBIC_STATE_RECOVERY: + cubic->current.state = NGTCP2_CUBIC_STATE_CONGESTION_AVOIDANCE; + cubic->current.epoch_start = ts; + break; + default: + break; + } + + w_cubic = cubic_cc_compute_w_cubic(cubic, cstat, + ts - cubic->current.app_limited_duration); + w_cubic_next = cubic_cc_compute_w_cubic( + cubic, cstat, + ts - cubic->current.app_limited_duration + cstat->smoothed_rtt); + + if (w_cubic_next == UINT64_MAX || w_cubic_next < cstat->cwnd) { + target = cstat->cwnd; + } else if (2 * w_cubic_next > 3 * cstat->cwnd) { + target = cstat->cwnd * 3 / 2; + } else { + target = w_cubic_next; + } + + m = ack->bytes_delivered * cstat->max_tx_udp_payload_size + + cubic->current.pending_est_bytes_delivered; + cubic->current.pending_est_bytes_delivered = m % cstat->cwnd; + + if (cubic->current.w_est < cubic->current.cwnd_prior) { + cubic->current.w_est += m * 9 / 17 / cstat->cwnd; + } else { + cubic->current.w_est += m / cstat->cwnd; + } + + if (w_cubic == UINT64_MAX || cubic->current.w_est > w_cubic) { + cstat->cwnd = cubic->current.w_est; + } else { + m = (target - cstat->cwnd) * cstat->max_tx_udp_payload_size + + cubic->current.pending_bytes_delivered; + cstat->cwnd += m / cstat->cwnd; + cubic->current.pending_bytes_delivered = m % cstat->cwnd; + } + + ngtcp2_log_info(cubic->cc.log, NGTCP2_LOG_EVENT_CCA, + "%" PRIu64 " bytes acked, cubic-ca cwnd=%" PRIu64 + " k=%" PRIi64 " target=%" PRIu64 " w_est=%" PRIu64, + ack->bytes_delivered, cstat->cwnd, cubic->current.k, target, + cubic->current.w_est); +} + +void ngtcp2_cc_cubic_cc_congestion_event(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp sent_ts, + uint64_t bytes_lost, + ngtcp2_tstamp ts) { + ngtcp2_cc_cubic *cubic = ngtcp2_struct_of(cc, ngtcp2_cc_cubic, cc); + uint64_t flight_size; + + if (in_congestion_recovery(cstat, sent_ts)) { + return; + } + + if (cubic->undo.cwnd < cstat->cwnd) { + cubic->undo.v = cubic->current; + cubic->undo.cwnd = cstat->cwnd; + cubic->undo.ssthresh = cstat->ssthresh; + } + + cstat->congestion_recovery_start_ts = ts; + + cubic->current.state = NGTCP2_CUBIC_STATE_RECOVERY; + cubic->current.epoch_start = UINT64_MAX; + cubic->current.app_limited_start_ts = UINT64_MAX; + cubic->current.app_limited_duration = 0; + cubic->current.pending_bytes_delivered = 0; + cubic->current.pending_est_bytes_delivered = 0; + + if (cstat->cwnd < cubic->current.w_max) { + cubic->current.w_max = cstat->cwnd * 17 / 20; + } else { + cubic->current.w_max = cstat->cwnd; + } + + cstat->ssthresh = cstat->cwnd * 7 / 10; + + if (cubic->rst->rs.delivered * 2 < cstat->cwnd) { + flight_size = cstat->bytes_in_flight + bytes_lost; + cstat->ssthresh = ngtcp2_min_uint64( + cstat->ssthresh, + ngtcp2_max_uint64(cubic->rst->rs.delivered, flight_size) * 7 / 10); + } + + cstat->ssthresh = + ngtcp2_max_uint64(cstat->ssthresh, 2 * cstat->max_tx_udp_payload_size); + + cubic->current.cwnd_prior = cstat->cwnd; + cstat->cwnd = cstat->ssthresh; + + cubic->current.w_est = cstat->cwnd; + + if (cstat->cwnd < cubic->current.w_max) { + cubic->current.k = + ngtcp2_cbrt(((cubic->current.w_max - cstat->cwnd) << 10) * 10 / 4 / + cstat->max_tx_udp_payload_size) * + NGTCP2_SECONDS; + cubic->current.k >>= 10; + } else { + cubic->current.k = 0; + } + + ngtcp2_log_info(cubic->cc.log, NGTCP2_LOG_EVENT_CCA, + "reduce cwnd because of packet loss cwnd=%" PRIu64, + cstat->cwnd); +} + +void ngtcp2_cc_cubic_cc_on_spurious_congestion(ngtcp2_cc *cc, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + ngtcp2_cc_cubic *cubic = ngtcp2_struct_of(cc, ngtcp2_cc_cubic, cc); + (void)ts; + + cstat->congestion_recovery_start_ts = UINT64_MAX; + + if (cstat->cwnd < cubic->undo.cwnd) { + cubic->current = cubic->undo.v; + cstat->cwnd = cubic->undo.cwnd; + cstat->ssthresh = cubic->undo.ssthresh; + + ngtcp2_log_info(cubic->cc.log, NGTCP2_LOG_EVENT_CCA, + "spurious congestion is detected and congestion state is " + "restored cwnd=%" PRIu64, + cstat->cwnd); + } + + cubic_vars_reset(&cubic->undo.v); + cubic->undo.cwnd = 0; + cubic->undo.ssthresh = 0; +} + +void ngtcp2_cc_cubic_cc_on_persistent_congestion(ngtcp2_cc *cc, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + ngtcp2_cc_cubic *cubic = ngtcp2_struct_of(cc, ngtcp2_cc_cubic, cc); + (void)ts; + + cubic_cc_reset(cubic); + + cstat->cwnd = 2 * cstat->max_tx_udp_payload_size; + cstat->congestion_recovery_start_ts = UINT64_MAX; +} + +void ngtcp2_cc_cubic_cc_reset(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + ngtcp2_cc_cubic *cubic = ngtcp2_struct_of(cc, ngtcp2_cc_cubic, cc); + (void)cstat; + (void)ts; + + cubic_cc_reset(cubic); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_cc.h b/contrib/libs/ngtcp2/lib/ngtcp2_cc.h new file mode 100644 index 0000000000..e3c363a51b --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_cc.h @@ -0,0 +1,409 @@ +/* + * ngtcp2 + * + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_CC_H +#define NGTCP2_CC_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_pktns_id.h" + +#define NGTCP2_LOSS_REDUCTION_FACTOR_BITS 1 +#define NGTCP2_PERSISTENT_CONGESTION_THRESHOLD 3 + +typedef struct ngtcp2_log ngtcp2_log; +typedef struct ngtcp2_conn_stat ngtcp2_conn_stat; +typedef struct ngtcp2_rst ngtcp2_rst; + +/** + * @struct + * + * :type:`ngtcp2_cc_pkt` is a convenient structure to include + * acked/lost/sent packet. + */ +typedef struct ngtcp2_cc_pkt { + /** + * :member:`pkt_num` is the packet number + */ + int64_t pkt_num; + /** + * :member:`pktlen` is the length of packet. + */ + size_t pktlen; + /** + * :member:`pktns_id` is the ID of packet number space which this + * packet belongs to. + */ + ngtcp2_pktns_id pktns_id; + /** + * :member:`sent_ts` is the timestamp when packet is sent. + */ + ngtcp2_tstamp sent_ts; + /** + * :member:`lost` is the number of bytes lost when this packet was + * sent. + */ + uint64_t lost; + /** + * :member:`tx_in_flight` is the bytes in flight when this packet + * was sent. + */ + uint64_t tx_in_flight; + /** + * :member:`is_app_limited` is nonzero if the connection is + * app-limited when this packet was sent. + */ + int is_app_limited; +} ngtcp2_cc_pkt; + +/** + * @struct + * + * :type:`ngtcp2_cc_ack` is a convenient structure which stores + * acknowledged and lost bytes. + */ +typedef struct ngtcp2_cc_ack { + /** + * :member:`prior_bytes_in_flight` is the in-flight bytes before + * processing this ACK. + */ + uint64_t prior_bytes_in_flight; + /** + * :member:`bytes_delivered` is the number of bytes acknowledged. + */ + uint64_t bytes_delivered; + /** + * :member:`bytes_lost` is the number of bytes declared lost. + */ + uint64_t bytes_lost; + /** + * :member:`pkt_delivered` is the cumulative acknowledged bytes when + * the last packet acknowledged by this ACK was sent. + */ + uint64_t pkt_delivered; + /** + * :member:`largest_pkt_sent_ts` is the time when the largest + * acknowledged packet was sent. It is UINT64_MAX if it is unknown. + */ + ngtcp2_tstamp largest_pkt_sent_ts; + /** + * :member:`rtt` is the RTT sample. It is UINT64_MAX if no RTT + * sample is available. + */ + ngtcp2_duration rtt; +} ngtcp2_cc_ack; + +typedef struct ngtcp2_cc ngtcp2_cc; + +/** + * @functypedef + * + * :type:`ngtcp2_cc_on_pkt_acked` is a callback function which is + * called with an acknowledged packet. + */ +typedef void (*ngtcp2_cc_on_pkt_acked)(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_pkt *pkt, + ngtcp2_tstamp ts); + +/** + * @functypedef + * + * :type:`ngtcp2_cc_on_pkt_lost` is a callback function which is + * called with a lost packet. + */ +typedef void (*ngtcp2_cc_on_pkt_lost)(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_pkt *pkt, + ngtcp2_tstamp ts); +/** + * @functypedef + * + * :type:`ngtcp2_cc_congestion_event` is a callback function which is + * called when congestion event happens (e.g., when packet is lost). + * |bytes_lost| is the number of bytes lost in this congestion event. + */ +typedef void (*ngtcp2_cc_congestion_event)(ngtcp2_cc *cc, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp sent_ts, + uint64_t bytes_lost, + ngtcp2_tstamp ts); + +/** + * @functypedef + * + * :type:`ngtcp2_cc_on_spurious_congestion` is a callback function + * which is called when a spurious congestion is detected. + */ +typedef void (*ngtcp2_cc_on_spurious_congestion)(ngtcp2_cc *cc, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +/** + * @functypedef + * + * :type:`ngtcp2_cc_on_persistent_congestion` is a callback function + * which is called when persistent congestion is established. + */ +typedef void (*ngtcp2_cc_on_persistent_congestion)(ngtcp2_cc *cc, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +/** + * @functypedef + * + * :type:`ngtcp2_cc_on_ack_recv` is a callback function which is + * called when an acknowledgement is received. + */ +typedef void (*ngtcp2_cc_on_ack_recv)(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, + ngtcp2_tstamp ts); + +/** + * @functypedef + * + * :type:`ngtcp2_cc_on_pkt_sent` is a callback function which is + * called when an ack-eliciting packet is sent. + */ +typedef void (*ngtcp2_cc_on_pkt_sent)(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_pkt *pkt); + +/** + * @functypedef + * + * :type:`ngtcp2_cc_new_rtt_sample` is a callback function which is + * called when new RTT sample is obtained. + */ +typedef void (*ngtcp2_cc_new_rtt_sample)(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +/** + * @functypedef + * + * :type:`ngtcp2_cc_reset` is a callback function which is called when + * congestion state must be reset. + */ +typedef void (*ngtcp2_cc_reset)(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +/** + * @enum + * + * :type:`ngtcp2_cc_event_type` defines congestion control events. + */ +typedef enum ngtcp2_cc_event_type { + /** + * :enum:`NGTCP2_CC_EVENT_TX_START` occurs when ack-eliciting packet + * is sent and no other ack-eliciting packet is present. + */ + NGTCP2_CC_EVENT_TYPE_TX_START +} ngtcp2_cc_event_type; + +/** + * @functypedef + * + * :type:`ngtcp2_cc_event` is a callback function which is called when + * a specific event happens. + */ +typedef void (*ngtcp2_cc_event)(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + ngtcp2_cc_event_type event, ngtcp2_tstamp ts); + +/** + * @struct + * + * :type:`ngtcp2_cc` is congestion control algorithm interface shared + * by implementations. All callback functions are optional. + */ +typedef struct ngtcp2_cc { + /** + * :member:`log` is ngtcp2 library internal logger. + */ + ngtcp2_log *log; + /** + * :member:`on_pkt_acked` is a callback function which is called + * when a packet is acknowledged. + */ + ngtcp2_cc_on_pkt_acked on_pkt_acked; + /** + * :member:`on_pkt_lost` is a callback function which is called when + * a packet is lost. + */ + ngtcp2_cc_on_pkt_lost on_pkt_lost; + /** + * :member:`congestion_event` is a callback function which is called + * when congestion event happens (.e.g, packet is lost). + */ + ngtcp2_cc_congestion_event congestion_event; + /** + * :member:`on_spurious_congestion` is a callback function which is + * called when a spurious congestion is detected. + */ + ngtcp2_cc_on_spurious_congestion on_spurious_congestion; + /** + * :member:`on_persistent_congestion` is a callback function which + * is called when persistent congestion is established. + */ + ngtcp2_cc_on_persistent_congestion on_persistent_congestion; + /** + * :member:`on_ack_recv` is a callback function which is called when + * an acknowledgement is received. + */ + ngtcp2_cc_on_ack_recv on_ack_recv; + /** + * :member:`on_pkt_sent` is a callback function which is called when + * ack-eliciting packet is sent. + */ + ngtcp2_cc_on_pkt_sent on_pkt_sent; + /** + * :member:`new_rtt_sample` is a callback function which is called + * when new RTT sample is obtained. + */ + ngtcp2_cc_new_rtt_sample new_rtt_sample; + /** + * :member:`reset` is a callback function which is called when + * congestion control state must be reset. + */ + ngtcp2_cc_reset reset; + /** + * :member:`event` is a callback function which is called when a + * specific event happens. + */ + ngtcp2_cc_event event; +} ngtcp2_cc; + +/* + * ngtcp2_cc_compute_initcwnd computes initial cwnd. + */ +uint64_t ngtcp2_cc_compute_initcwnd(size_t max_packet_size); + +ngtcp2_cc_pkt *ngtcp2_cc_pkt_init(ngtcp2_cc_pkt *pkt, int64_t pkt_num, + size_t pktlen, ngtcp2_pktns_id pktns_id, + ngtcp2_tstamp sent_ts, uint64_t lost, + uint64_t tx_in_flight, int is_app_limited); + +/* ngtcp2_cc_reno is the RENO congestion controller. */ +typedef struct ngtcp2_cc_reno { + ngtcp2_cc cc; + uint64_t pending_add; +} ngtcp2_cc_reno; + +void ngtcp2_cc_reno_init(ngtcp2_cc_reno *reno, ngtcp2_log *log); + +void ngtcp2_cc_reno_cc_on_pkt_acked(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_pkt *pkt, ngtcp2_tstamp ts); + +void ngtcp2_cc_reno_cc_congestion_event(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp sent_ts, + uint64_t bytes_lost, ngtcp2_tstamp ts); + +void ngtcp2_cc_reno_cc_on_persistent_congestion(ngtcp2_cc *cc, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +void ngtcp2_cc_reno_cc_reset(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +typedef enum ngtcp2_cubic_state { + /* NGTCP2_CUBIC_STATE_INITIAL is the state where CUBIC is in slow + start phase, or congestion avoidance phase before congestion + events occur. */ + NGTCP2_CUBIC_STATE_INITIAL, + /* NGTCP2_CUBIC_STATE_RECOVERY is the state that a connection is in + recovery period. */ + NGTCP2_CUBIC_STATE_RECOVERY, + /* NGTCP2_CUBIC_STATE_CONGESTION_AVOIDANCE is the state where CUBIC + is in congestion avoidance phase after recovery period ends. */ + NGTCP2_CUBIC_STATE_CONGESTION_AVOIDANCE, +} ngtcp2_cubic_state; + +typedef struct ngtcp2_cubic_vars { + uint64_t cwnd_prior; + uint64_t w_max; + ngtcp2_duration k; + ngtcp2_tstamp epoch_start; + uint64_t w_est; + + ngtcp2_cubic_state state; + /* app_limited_start_ts is the timestamp where app limited period + started. */ + ngtcp2_tstamp app_limited_start_ts; + /* app_limited_duration is the cumulative duration where a + connection is under app limited when ACK is received. */ + ngtcp2_duration app_limited_duration; + uint64_t pending_bytes_delivered; + uint64_t pending_est_bytes_delivered; +} ngtcp2_cubic_vars; + +/* ngtcp2_cc_cubic is CUBIC congestion controller. */ +typedef struct ngtcp2_cc_cubic { + ngtcp2_cc cc; + ngtcp2_rst *rst; + /* current is a set of variables that are currently in effect. */ + ngtcp2_cubic_vars current; + /* undo stores the congestion state when a congestion event occurs + in order to restore the state when it turns out that the event is + spurious. */ + struct { + ngtcp2_cubic_vars v; + uint64_t cwnd; + uint64_t ssthresh; + } undo; + /* HyStart++ variables */ + struct { + ngtcp2_duration current_round_min_rtt; + ngtcp2_duration last_round_min_rtt; + ngtcp2_duration curr_rtt; + size_t rtt_sample_count; + ngtcp2_duration css_baseline_min_rtt; + size_t css_round; + } hs; + uint64_t next_round_delivered; +} ngtcp2_cc_cubic; + +void ngtcp2_cc_cubic_init(ngtcp2_cc_cubic *cc, ngtcp2_log *log, + ngtcp2_rst *rst); + +void ngtcp2_cc_cubic_cc_on_ack_recv(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_cc_ack *ack, ngtcp2_tstamp ts); + +void ngtcp2_cc_cubic_cc_congestion_event(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp sent_ts, + uint64_t bytes_lost, ngtcp2_tstamp ts); + +void ngtcp2_cc_cubic_cc_on_spurious_congestion(ngtcp2_cc *ccx, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +void ngtcp2_cc_cubic_cc_on_persistent_congestion(ngtcp2_cc *cc, + ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +void ngtcp2_cc_cubic_cc_reset(ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +uint64_t ngtcp2_cbrt(uint64_t n); + +#endif /* !defined(NGTCP2_CC_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_cid.c b/contrib/libs/ngtcp2/lib/ngtcp2_cid.c new file mode 100644 index 0000000000..181850cfcb --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_cid.c @@ -0,0 +1,149 @@ +/* + * ngtcp2 + * + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_cid.h" + +#include <assert.h> +#include <string.h> + +#include "ngtcp2_path.h" +#include "ngtcp2_str.h" + +void ngtcp2_cid_zero(ngtcp2_cid *cid) { memset(cid, 0, sizeof(*cid)); } + +void ngtcp2_cid_init(ngtcp2_cid *cid, const uint8_t *data, size_t datalen) { + assert(datalen <= NGTCP2_MAX_CIDLEN); + + cid->datalen = datalen; + + if (datalen) { + ngtcp2_cpymem(cid->data, data, datalen); + } +} + +int ngtcp2_cid_eq(const ngtcp2_cid *cid, const ngtcp2_cid *other) { + return cid->datalen == other->datalen && + 0 == memcmp(cid->data, other->data, cid->datalen); +} + +int ngtcp2_cid_less(const ngtcp2_cid *lhs, const ngtcp2_cid *rhs) { + int s = lhs->datalen < rhs->datalen; + size_t n = s ? lhs->datalen : rhs->datalen; + int c = memcmp(lhs->data, rhs->data, n); + + return c < 0 || (c == 0 && s); +} + +int ngtcp2_cid_empty(const ngtcp2_cid *cid) { return cid->datalen == 0; } + +void ngtcp2_scid_init(ngtcp2_scid *scid, uint64_t seq, const ngtcp2_cid *cid) { + scid->pe.index = NGTCP2_PQ_BAD_INDEX; + scid->seq = seq; + scid->cid = *cid; + scid->retired_ts = UINT64_MAX; + scid->flags = NGTCP2_SCID_FLAG_NONE; +} + +void ngtcp2_scid_copy(ngtcp2_scid *dest, const ngtcp2_scid *src) { + ngtcp2_scid_init(dest, src->seq, &src->cid); + dest->retired_ts = src->retired_ts; + dest->flags = src->flags; +} + +void ngtcp2_dcid_init(ngtcp2_dcid *dcid, uint64_t seq, const ngtcp2_cid *cid, + const uint8_t *token) { + dcid->seq = seq; + dcid->cid = *cid; + + if (token) { + memcpy(dcid->token, token, NGTCP2_STATELESS_RESET_TOKENLEN); + dcid->flags = NGTCP2_DCID_FLAG_TOKEN_PRESENT; + } else { + dcid->flags = NGTCP2_DCID_FLAG_NONE; + } + + ngtcp2_path_storage_zero(&dcid->ps); + dcid->retired_ts = UINT64_MAX; + dcid->bound_ts = UINT64_MAX; + dcid->bytes_sent = 0; + dcid->bytes_recv = 0; + dcid->max_udp_payload_size = NGTCP2_MAX_UDP_PAYLOAD_SIZE; +} + +void ngtcp2_dcid_set_token(ngtcp2_dcid *dcid, const uint8_t *token) { + assert(token); + + dcid->flags |= NGTCP2_DCID_FLAG_TOKEN_PRESENT; + memcpy(dcid->token, token, NGTCP2_STATELESS_RESET_TOKENLEN); +} + +void ngtcp2_dcid_set_path(ngtcp2_dcid *dcid, const ngtcp2_path *path) { + ngtcp2_path_copy(&dcid->ps.path, path); +} + +void ngtcp2_dcid_copy(ngtcp2_dcid *dest, const ngtcp2_dcid *src) { + ngtcp2_dcid_init(dest, src->seq, &src->cid, + (src->flags & NGTCP2_DCID_FLAG_TOKEN_PRESENT) ? src->token + : NULL); + ngtcp2_path_copy(&dest->ps.path, &src->ps.path); + dest->retired_ts = src->retired_ts; + dest->bound_ts = src->bound_ts; + dest->flags = src->flags; + dest->bytes_sent = src->bytes_sent; + dest->bytes_recv = src->bytes_recv; + dest->max_udp_payload_size = src->max_udp_payload_size; +} + +void ngtcp2_dcid_copy_cid_token(ngtcp2_dcid *dest, const ngtcp2_dcid *src) { + dest->seq = src->seq; + dest->cid = src->cid; + + if (src->flags & NGTCP2_DCID_FLAG_TOKEN_PRESENT) { + dest->flags |= NGTCP2_DCID_FLAG_TOKEN_PRESENT; + memcpy(dest->token, src->token, NGTCP2_STATELESS_RESET_TOKENLEN); + } else if (dest->flags & NGTCP2_DCID_FLAG_TOKEN_PRESENT) { + dest->flags &= (uint8_t)~NGTCP2_DCID_FLAG_TOKEN_PRESENT; + } +} + +int ngtcp2_dcid_verify_uniqueness(const ngtcp2_dcid *dcid, uint64_t seq, + const ngtcp2_cid *cid, const uint8_t *token) { + if (dcid->seq == seq) { + return ngtcp2_cid_eq(&dcid->cid, cid) && + (dcid->flags & NGTCP2_DCID_FLAG_TOKEN_PRESENT) && + memcmp(dcid->token, token, NGTCP2_STATELESS_RESET_TOKENLEN) == 0 + ? 0 + : NGTCP2_ERR_PROTO; + } + + return !ngtcp2_cid_eq(&dcid->cid, cid) ? 0 : NGTCP2_ERR_PROTO; +} + +int ngtcp2_dcid_verify_stateless_reset_token(const ngtcp2_dcid *dcid, + const uint8_t *token) { + return (dcid->flags & NGTCP2_DCID_FLAG_TOKEN_PRESENT) && + ngtcp2_cmemeq(dcid->token, token, NGTCP2_STATELESS_RESET_TOKENLEN) + ? 0 + : NGTCP2_ERR_INVALID_ARGUMENT; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_cid.h b/contrib/libs/ngtcp2/lib/ngtcp2_cid.h new file mode 100644 index 0000000000..6372ef113d --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_cid.h @@ -0,0 +1,176 @@ +/* + * ngtcp2 + * + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_CID_H +#define NGTCP2_CID_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_pq.h" +#include "ngtcp2_path.h" + +/* NGTCP2_SCID_FLAG_NONE indicates that no flag is set. */ +#define NGTCP2_SCID_FLAG_NONE 0x00u +/* NGTCP2_SCID_FLAG_USED indicates that a local endpoint observed that + a remote endpoint uses this particular Connection ID. */ +#define NGTCP2_SCID_FLAG_USED 0x01u +/* NGTCP2_SCID_FLAG_RETIRED indicates that this particular Connection + ID is retired. */ +#define NGTCP2_SCID_FLAG_RETIRED 0x02u + +typedef struct ngtcp2_scid { + ngtcp2_pq_entry pe; + /* seq is the sequence number associated to the Connection ID. */ + uint64_t seq; + /* cid is a connection ID */ + ngtcp2_cid cid; + /* retired_ts is the timestamp when a remote endpoint tells that + this Connection ID is retired. */ + ngtcp2_tstamp retired_ts; + /* flags is the bitwise OR of zero or more of NGTCP2_SCID_FLAG_*. */ + uint8_t flags; +} ngtcp2_scid; + +/* NGTCP2_DCID_FLAG_NONE indicates that no flag is set. */ +#define NGTCP2_DCID_FLAG_NONE 0x00u +/* NGTCP2_DCID_FLAG_PATH_VALIDATED indicates that an associated path + has been validated. */ +#define NGTCP2_DCID_FLAG_PATH_VALIDATED 0x01u +/* NGTCP2_DCID_FLAG_TOKEN_PRESENT indicates that a stateless reset + token is set in token field. */ +#define NGTCP2_DCID_FLAG_TOKEN_PRESENT 0x02u + +typedef struct ngtcp2_dcid { + /* seq is the sequence number associated to the Connection ID. */ + uint64_t seq; + /* cid is a Connection ID */ + ngtcp2_cid cid; + /* path is a path which cid is bound to. The addresses are zero + length if cid has not been bound to a particular path yet. */ + ngtcp2_path_storage ps; + /* retired_ts is the timestamp when this Connection ID is + retired. */ + ngtcp2_tstamp retired_ts; + /* bound_ts is the timestamp when this Connection ID is bound to a + particular path. It is only assigned when a Connection ID is + used just for sending PATH_RESPONSE, and is not zero-length. */ + ngtcp2_tstamp bound_ts; + /* bytes_sent is the number of bytes sent to an associated path. */ + uint64_t bytes_sent; + /* bytes_recv is the number of bytes received from an associated + path. */ + uint64_t bytes_recv; + /* max_udp_payload_size is the maximum size of UDP datagram payload + that is allowed to be sent to this path. */ + size_t max_udp_payload_size; + /* flags is bitwise OR of zero or more of NGTCP2_DCID_FLAG_*. */ + uint8_t flags; + /* token is a stateless reset token received along with this + Connection ID. The stateless reset token is tied to the + connection, not to the particular Connection ID. */ + uint8_t token[NGTCP2_STATELESS_RESET_TOKENLEN]; +} ngtcp2_dcid; + +/* ngtcp2_cid_zero makes |cid| zero-length. */ +void ngtcp2_cid_zero(ngtcp2_cid *cid); + +/* + * ngtcp2_cid_less returns nonzero if |lhs| is lexicographical smaller + * than |rhs|. + */ +int ngtcp2_cid_less(const ngtcp2_cid *lhs, const ngtcp2_cid *rhs); + +/* + * ngtcp2_cid_empty returns nonzero if |cid| includes empty Connection + * ID. + */ +int ngtcp2_cid_empty(const ngtcp2_cid *cid); + +/* + * ngtcp2_scid_init initializes |scid| with the given parameters. + */ +void ngtcp2_scid_init(ngtcp2_scid *scid, uint64_t seq, const ngtcp2_cid *cid); + +/* + * ngtcp2_scid_copy copies |src| into |dest|. + */ +void ngtcp2_scid_copy(ngtcp2_scid *dest, const ngtcp2_scid *src); + +/* + * ngtcp2_dcid_init initializes |dcid| with the given parameters. If + * |token| is NULL, the function fills dcid->token with 0. |token| + * must be NGTCP2_STATELESS_RESET_TOKENLEN bytes long. + */ +void ngtcp2_dcid_init(ngtcp2_dcid *dcid, uint64_t seq, const ngtcp2_cid *cid, + const uint8_t *token); + +/* + * ngtcp2_dcid_set_token sets |token| to |dcid|. |token| must not be + * NULL, and must be NGTCP2_STATELESS_RESET_TOKENLEN bytes long. + */ +void ngtcp2_dcid_set_token(ngtcp2_dcid *dcid, const uint8_t *token); + +/* + * ngtcp2_dcid_set_path sets |path| to |dcid|. It sets + * max_udp_payload_size to the minimum UDP datagram payload size + * supported by the IP protocol version. + */ +void ngtcp2_dcid_set_path(ngtcp2_dcid *dcid, const ngtcp2_path *path); + +/* + * ngtcp2_dcid_copy copies |src| into |dest|. + */ +void ngtcp2_dcid_copy(ngtcp2_dcid *dest, const ngtcp2_dcid *src); + +/* + * ngtcp2_dcid_copy_cid_token behaves like ngtcp2_dcid_copy, but it + * only copies cid, seq, and token. + */ +void ngtcp2_dcid_copy_cid_token(ngtcp2_dcid *dest, const ngtcp2_dcid *src); + +/* + * ngtcp2_dcid_verify_uniqueness verifies uniqueness of (|seq|, |cid|, + * |token|) tuple against |dcid|. + */ +int ngtcp2_dcid_verify_uniqueness(const ngtcp2_dcid *dcid, uint64_t seq, + const ngtcp2_cid *cid, const uint8_t *token); + +/* + * ngtcp2_dcid_verify_stateless_reset_token verifies stateless reset + * token |token| against the one included in |dcid|. Tokens are + * compared in constant time. This function returns 0 if the + * verification succeeds, or one of the following negative error + * codes: + * + * NGTCP2_ERR_INVALID_ARGUMENT + * Tokens do not match; or |dcid| does not contain a token. + */ +int ngtcp2_dcid_verify_stateless_reset_token(const ngtcp2_dcid *dcid, + const uint8_t *token); + +#endif /* !defined(NGTCP2_CID_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_conn.c b/contrib/libs/ngtcp2/lib/ngtcp2_conn.c new file mode 100644 index 0000000000..dff8d59459 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_conn.c @@ -0,0 +1,13763 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_conn.h" + +#include <string.h> +#include <assert.h> + +#include "ngtcp2_macro.h" +#include "ngtcp2_log.h" +#include "ngtcp2_cid.h" +#include "ngtcp2_conv.h" +#include "ngtcp2_vec.h" +#include "ngtcp2_addr.h" +#include "ngtcp2_path.h" +#include "ngtcp2_rcvry.h" +#include "ngtcp2_unreachable.h" +#include "ngtcp2_net.h" +#include "ngtcp2_transport_params.h" +#include "ngtcp2_settings.h" +#include "ngtcp2_tstamp.h" +#include "ngtcp2_frame_chain.h" + +/* NGTCP2_FLOW_WINDOW_RTT_FACTOR is the factor of RTT when flow + control window auto-tuning is triggered. */ +#define NGTCP2_FLOW_WINDOW_RTT_FACTOR 2 +/* NGTCP2_FLOW_WINDOW_SCALING_FACTOR is the growth factor of flow + control window. */ +#define NGTCP2_FLOW_WINDOW_SCALING_FACTOR 2 +/* NGTCP2_MIN_COALESCED_PAYLOADLEN is the minimum length of QUIC + packet payload that should be coalesced to a long packet. */ +#define NGTCP2_MIN_COALESCED_PAYLOADLEN 128 + +ngtcp2_objalloc_def(strm, ngtcp2_strm, oplent); + +/* + * conn_local_stream returns nonzero if |stream_id| indicates that it + * is the stream initiated by local endpoint. + */ +static int conn_local_stream(ngtcp2_conn *conn, int64_t stream_id) { + return (uint8_t)(stream_id & 1) == conn->server; +} + +/* + * bidi_stream returns nonzero if |stream_id| is a bidirectional + * stream ID. + */ +static int bidi_stream(int64_t stream_id) { return (stream_id & 0x2) == 0; } + +static void conn_update_timestamp(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + assert(conn->log.last_ts <= ts); + assert(conn->qlog.last_ts <= ts); + + conn->log.last_ts = ts; + conn->qlog.last_ts = ts; +} + +/* + * conn_is_tls_handshake_completed returns nonzero if TLS handshake + * has completed and 1 RTT keys are available. + */ +static int conn_is_tls_handshake_completed(ngtcp2_conn *conn) { + return (conn->flags & NGTCP2_CONN_FLAG_TLS_HANDSHAKE_COMPLETED) && + conn->pktns.crypto.rx.ckm && conn->pktns.crypto.tx.ckm; +} + +static int conn_call_recv_client_initial(ngtcp2_conn *conn, + const ngtcp2_cid *dcid) { + int rv; + + assert(conn->callbacks.recv_client_initial); + + rv = conn->callbacks.recv_client_initial(conn, dcid, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_handshake_completed(ngtcp2_conn *conn) { + int rv; + + if (!conn->callbacks.handshake_completed) { + return 0; + } + + rv = conn->callbacks.handshake_completed(conn, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_recv_stream_data(ngtcp2_conn *conn, ngtcp2_strm *strm, + uint32_t flags, uint64_t offset, + const uint8_t *data, size_t datalen) { + int rv; + + if (!conn->callbacks.recv_stream_data) { + return 0; + } + + rv = conn->callbacks.recv_stream_data(conn, flags, strm->stream_id, offset, + data, datalen, conn->user_data, + strm->stream_user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_recv_crypto_data(ngtcp2_conn *conn, + ngtcp2_encryption_level encryption_level, + uint64_t offset, const uint8_t *data, + size_t datalen) { + int rv; + + assert(conn->callbacks.recv_crypto_data); + + rv = conn->callbacks.recv_crypto_data(conn, encryption_level, offset, data, + datalen, conn->user_data); + switch (rv) { + case 0: + case NGTCP2_ERR_CRYPTO: + case NGTCP2_ERR_REQUIRED_TRANSPORT_PARAM: + case NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM: + case NGTCP2_ERR_TRANSPORT_PARAM: + case NGTCP2_ERR_PROTO: + case NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE: + case NGTCP2_ERR_NOMEM: + case NGTCP2_ERR_CALLBACK_FAILURE: + return rv; + default: + return NGTCP2_ERR_CALLBACK_FAILURE; + } +} + +static int conn_call_stream_open(ngtcp2_conn *conn, ngtcp2_strm *strm) { + int rv; + + if (!conn->callbacks.stream_open) { + return 0; + } + + rv = conn->callbacks.stream_open(conn, strm->stream_id, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_stream_close(ngtcp2_conn *conn, ngtcp2_strm *strm) { + int rv; + uint32_t flags = NGTCP2_STREAM_CLOSE_FLAG_NONE; + + if (!conn->callbacks.stream_close) { + return 0; + } + + if (strm->flags & NGTCP2_STRM_FLAG_APP_ERROR_CODE_SET) { + flags |= NGTCP2_STREAM_CLOSE_FLAG_APP_ERROR_CODE_SET; + } + + rv = conn->callbacks.stream_close(conn, flags, strm->stream_id, + strm->app_error_code, conn->user_data, + strm->stream_user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_stream_reset(ngtcp2_conn *conn, int64_t stream_id, + uint64_t final_size, uint64_t app_error_code, + void *stream_user_data) { + int rv; + + if (!conn->callbacks.stream_reset) { + return 0; + } + + rv = conn->callbacks.stream_reset(conn, stream_id, final_size, app_error_code, + conn->user_data, stream_user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_extend_max_local_streams_bidi(ngtcp2_conn *conn, + uint64_t max_streams) { + int rv; + + if (!conn->callbacks.extend_max_local_streams_bidi) { + return 0; + } + + rv = conn->callbacks.extend_max_local_streams_bidi(conn, max_streams, + conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_extend_max_local_streams_uni(ngtcp2_conn *conn, + uint64_t max_streams) { + int rv; + + if (!conn->callbacks.extend_max_local_streams_uni) { + return 0; + } + + rv = conn->callbacks.extend_max_local_streams_uni(conn, max_streams, + conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_get_new_connection_id(ngtcp2_conn *conn, ngtcp2_cid *cid, + uint8_t *token, size_t cidlen) { + int rv; + + assert(conn->callbacks.get_new_connection_id); + + rv = conn->callbacks.get_new_connection_id(conn, cid, token, cidlen, + conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_remove_connection_id(ngtcp2_conn *conn, + const ngtcp2_cid *cid) { + int rv; + + if (!conn->callbacks.remove_connection_id) { + return 0; + } + + rv = conn->callbacks.remove_connection_id(conn, cid, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_path_validation(ngtcp2_conn *conn, const ngtcp2_pv *pv, + ngtcp2_path_validation_result res) { + int rv; + uint32_t flags = NGTCP2_PATH_VALIDATION_FLAG_NONE; + const ngtcp2_path *old_path = NULL; + + if (!conn->callbacks.path_validation) { + return 0; + } + + if (pv->flags & NGTCP2_PV_FLAG_PREFERRED_ADDR) { + flags |= NGTCP2_PATH_VALIDATION_FLAG_PREFERRED_ADDR; + } + + if (pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) { + old_path = &pv->fallback_dcid.ps.path; + } + + if (conn->server && old_path && + (ngtcp2_addr_compare(&pv->dcid.ps.path.remote, &old_path->remote) & + (NGTCP2_ADDR_COMPARE_FLAG_ADDR | NGTCP2_ADDR_COMPARE_FLAG_FAMILY))) { + flags |= NGTCP2_PATH_VALIDATION_FLAG_NEW_TOKEN; + } + + rv = conn->callbacks.path_validation(conn, flags, &pv->dcid.ps.path, old_path, + res, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_select_preferred_addr(ngtcp2_conn *conn, + ngtcp2_path *dest) { + int rv; + + if (!conn->callbacks.select_preferred_addr) { + return 0; + } + + assert(conn->remote.transport_params); + assert(conn->remote.transport_params->preferred_addr_present); + + rv = conn->callbacks.select_preferred_addr( + conn, dest, &conn->remote.transport_params->preferred_addr, + conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_extend_max_remote_streams_bidi(ngtcp2_conn *conn, + uint64_t max_streams) { + int rv; + + if (!conn->callbacks.extend_max_remote_streams_bidi) { + return 0; + } + + rv = conn->callbacks.extend_max_remote_streams_bidi(conn, max_streams, + conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_extend_max_remote_streams_uni(ngtcp2_conn *conn, + uint64_t max_streams) { + int rv; + + if (!conn->callbacks.extend_max_remote_streams_uni) { + return 0; + } + + rv = conn->callbacks.extend_max_remote_streams_uni(conn, max_streams, + conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_extend_max_stream_data(ngtcp2_conn *conn, + ngtcp2_strm *strm, + int64_t stream_id, + uint64_t datalen) { + int rv; + + if (!conn->callbacks.extend_max_stream_data) { + return 0; + } + + rv = conn->callbacks.extend_max_stream_data( + conn, stream_id, datalen, conn->user_data, strm->stream_user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_dcid_status(ngtcp2_conn *conn, + ngtcp2_connection_id_status_type type, + const ngtcp2_dcid *dcid) { + int rv; + + if (!conn->callbacks.dcid_status) { + return 0; + } + + rv = conn->callbacks.dcid_status( + conn, type, dcid->seq, &dcid->cid, + (dcid->flags & NGTCP2_DCID_FLAG_TOKEN_PRESENT) ? dcid->token : NULL, + conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_activate_dcid(ngtcp2_conn *conn, const ngtcp2_dcid *dcid) { + return conn_call_dcid_status(conn, NGTCP2_CONNECTION_ID_STATUS_TYPE_ACTIVATE, + dcid); +} + +static int conn_call_deactivate_dcid(ngtcp2_conn *conn, + const ngtcp2_dcid *dcid) { + return conn_call_dcid_status( + conn, NGTCP2_CONNECTION_ID_STATUS_TYPE_DEACTIVATE, dcid); +} + +static int conn_call_stream_stop_sending(ngtcp2_conn *conn, int64_t stream_id, + uint64_t app_error_code, + void *stream_user_data) { + int rv; + + if (!conn->callbacks.stream_stop_sending) { + return 0; + } + + rv = conn->callbacks.stream_stop_sending(conn, stream_id, app_error_code, + conn->user_data, stream_user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static void conn_call_delete_crypto_aead_ctx(ngtcp2_conn *conn, + ngtcp2_crypto_aead_ctx *aead_ctx) { + if (!aead_ctx->native_handle) { + return; + } + + assert(conn->callbacks.delete_crypto_aead_ctx); + + conn->callbacks.delete_crypto_aead_ctx(conn, aead_ctx, conn->user_data); +} + +static void +conn_call_delete_crypto_cipher_ctx(ngtcp2_conn *conn, + ngtcp2_crypto_cipher_ctx *cipher_ctx) { + if (!cipher_ctx->native_handle) { + return; + } + + assert(conn->callbacks.delete_crypto_cipher_ctx); + + conn->callbacks.delete_crypto_cipher_ctx(conn, cipher_ctx, conn->user_data); +} + +static int conn_call_client_initial(ngtcp2_conn *conn) { + int rv; + + assert(conn->callbacks.client_initial); + + rv = conn->callbacks.client_initial(conn, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_get_path_challenge_data(ngtcp2_conn *conn, uint8_t *data) { + int rv; + + assert(conn->callbacks.get_path_challenge_data); + + rv = conn->callbacks.get_path_challenge_data(conn, data, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_recv_version_negotiation(ngtcp2_conn *conn, + const ngtcp2_pkt_hd *hd, + const uint32_t *sv, size_t nsv) { + int rv; + + if (!conn->callbacks.recv_version_negotiation) { + return 0; + } + + rv = conn->callbacks.recv_version_negotiation(conn, hd, sv, nsv, + conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_recv_retry(ngtcp2_conn *conn, const ngtcp2_pkt_hd *hd) { + int rv; + + assert(conn->callbacks.recv_retry); + + rv = conn->callbacks.recv_retry(conn, hd, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int +conn_call_recv_stateless_reset(ngtcp2_conn *conn, + const ngtcp2_pkt_stateless_reset *sr) { + int rv; + + if (!conn->callbacks.recv_stateless_reset) { + return 0; + } + + rv = conn->callbacks.recv_stateless_reset(conn, sr, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_recv_new_token(ngtcp2_conn *conn, const uint8_t *token, + size_t tokenlen) { + int rv; + + if (!conn->callbacks.recv_new_token) { + return 0; + } + + rv = conn->callbacks.recv_new_token(conn, token, tokenlen, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_handshake_confirmed(ngtcp2_conn *conn) { + int rv; + + if (!conn->callbacks.handshake_confirmed) { + return 0; + } + + rv = conn->callbacks.handshake_confirmed(conn, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_recv_datagram(ngtcp2_conn *conn, + const ngtcp2_datagram *fr) { + const uint8_t *data; + size_t datalen; + int rv; + uint32_t flags = NGTCP2_DATAGRAM_FLAG_NONE; + + if (!conn->callbacks.recv_datagram) { + return 0; + } + + if (fr->datacnt) { + assert(fr->datacnt == 1); + + data = fr->data->base; + datalen = fr->data->len; + } else { + data = NULL; + datalen = 0; + } + + if (!conn_is_tls_handshake_completed(conn)) { + flags |= NGTCP2_DATAGRAM_FLAG_0RTT; + } + + rv = + conn->callbacks.recv_datagram(conn, flags, data, datalen, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int +conn_call_update_key(ngtcp2_conn *conn, uint8_t *rx_secret, uint8_t *tx_secret, + ngtcp2_crypto_aead_ctx *rx_aead_ctx, uint8_t *rx_iv, + ngtcp2_crypto_aead_ctx *tx_aead_ctx, uint8_t *tx_iv, + const uint8_t *current_rx_secret, + const uint8_t *current_tx_secret, size_t secretlen) { + int rv; + + assert(conn->callbacks.update_key); + + rv = conn->callbacks.update_key( + conn, rx_secret, tx_secret, rx_aead_ctx, rx_iv, tx_aead_ctx, tx_iv, + current_rx_secret, current_tx_secret, secretlen, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_version_negotiation(ngtcp2_conn *conn, uint32_t version, + const ngtcp2_cid *dcid) { + int rv; + + assert(conn->callbacks.version_negotiation); + + rv = + conn->callbacks.version_negotiation(conn, version, dcid, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_recv_rx_key(ngtcp2_conn *conn, + ngtcp2_encryption_level level) { + int rv; + + if (!conn->callbacks.recv_rx_key) { + return 0; + } + + rv = conn->callbacks.recv_rx_key(conn, level, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static int conn_call_recv_tx_key(ngtcp2_conn *conn, + ngtcp2_encryption_level level) { + int rv; + + if (!conn->callbacks.recv_tx_key) { + return 0; + } + + rv = conn->callbacks.recv_tx_key(conn, level, conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +static void pktns_init(ngtcp2_pktns *pktns, ngtcp2_pktns_id pktns_id, + ngtcp2_rst *rst, ngtcp2_cc *cc, int64_t initial_pkt_num, + ngtcp2_log *log, ngtcp2_qlog *qlog, + ngtcp2_objalloc *rtb_entry_objalloc, + ngtcp2_objalloc *frc_objalloc, const ngtcp2_mem *mem) { + memset(pktns, 0, sizeof(*pktns)); + + ngtcp2_gaptr_init(&pktns->rx.pngap, mem); + + pktns->tx.last_pkt_num = initial_pkt_num - 1; + pktns->tx.non_ack_pkt_start_ts = UINT64_MAX; + pktns->rx.max_pkt_num = -1; + pktns->rx.max_ack_eliciting_pkt_num = -1; + pktns->id = pktns_id; + + ngtcp2_acktr_init(&pktns->acktr, log, mem); + + ngtcp2_strm_init(&pktns->crypto.strm, 0, NGTCP2_STRM_FLAG_NONE, 0, 0, NULL, + frc_objalloc, mem); + + ngtcp2_rtb_init(&pktns->rtb, rst, cc, initial_pkt_num, log, qlog, + rtb_entry_objalloc, frc_objalloc, mem); +} + +static int pktns_new(ngtcp2_pktns **ppktns, ngtcp2_pktns_id pktns_id, + ngtcp2_rst *rst, ngtcp2_cc *cc, int64_t initial_pkt_num, + ngtcp2_log *log, ngtcp2_qlog *qlog, + ngtcp2_objalloc *rtb_entry_objalloc, + ngtcp2_objalloc *frc_objalloc, const ngtcp2_mem *mem) { + *ppktns = ngtcp2_mem_malloc(mem, sizeof(ngtcp2_pktns)); + if (*ppktns == NULL) { + return NGTCP2_ERR_NOMEM; + } + + pktns_init(*ppktns, pktns_id, rst, cc, initial_pkt_num, log, qlog, + rtb_entry_objalloc, frc_objalloc, mem); + + return 0; +} + +static int cycle_less(const ngtcp2_pq_entry *lhs, const ngtcp2_pq_entry *rhs) { + ngtcp2_strm *ls = ngtcp2_struct_of(lhs, ngtcp2_strm, pe); + ngtcp2_strm *rs = ngtcp2_struct_of(rhs, ngtcp2_strm, pe); + + if (ls->cycle == rs->cycle) { + return ls->stream_id < rs->stream_id; + } + + return rs->cycle - ls->cycle <= 1; +} + +static void delete_buffed_pkts(ngtcp2_pkt_chain *pc, const ngtcp2_mem *mem) { + ngtcp2_pkt_chain *next; + + for (; pc;) { + next = pc->next; + ngtcp2_pkt_chain_del(pc, mem); + pc = next; + } +} + +static void delete_buf_chain(ngtcp2_buf_chain *bufchain, + const ngtcp2_mem *mem) { + ngtcp2_buf_chain *next; + + for (; bufchain;) { + next = bufchain->next; + ngtcp2_buf_chain_del(bufchain, mem); + bufchain = next; + } +} + +static void pktns_free(ngtcp2_pktns *pktns, const ngtcp2_mem *mem) { + delete_buf_chain(pktns->crypto.tx.data, mem); + + delete_buffed_pkts(pktns->rx.buffed_pkts, mem); + + ngtcp2_frame_chain_list_objalloc_del(pktns->tx.frq, pktns->rtb.frc_objalloc, + mem); + + ngtcp2_crypto_km_del(pktns->crypto.rx.ckm, mem); + ngtcp2_crypto_km_del(pktns->crypto.tx.ckm, mem); + + ngtcp2_rtb_free(&pktns->rtb); + ngtcp2_strm_free(&pktns->crypto.strm); + ngtcp2_acktr_free(&pktns->acktr); + ngtcp2_gaptr_free(&pktns->rx.pngap); +} + +static void pktns_del(ngtcp2_pktns *pktns, const ngtcp2_mem *mem) { + if (pktns == NULL) { + return; + } + + pktns_free(pktns, mem); + + ngtcp2_mem_free(mem, pktns); +} + +static int cid_less(const ngtcp2_ksl_key *lhs, const ngtcp2_ksl_key *rhs) { + return ngtcp2_cid_less(lhs, rhs); +} + +static int retired_ts_less(const ngtcp2_pq_entry *lhs, + const ngtcp2_pq_entry *rhs) { + const ngtcp2_scid *a = ngtcp2_struct_of(lhs, ngtcp2_scid, pe); + const ngtcp2_scid *b = ngtcp2_struct_of(rhs, ngtcp2_scid, pe); + + return a->retired_ts < b->retired_ts; +} + +/* + * conn_reset_conn_stat_cc resets congestion state in |cstat|. + */ +static void conn_reset_conn_stat_cc(ngtcp2_conn *conn, + ngtcp2_conn_stat *cstat) { + cstat->latest_rtt = 0; + cstat->min_rtt = UINT64_MAX; + cstat->smoothed_rtt = conn->local.settings.initial_rtt; + cstat->rttvar = conn->local.settings.initial_rtt / 2; + cstat->first_rtt_sample_ts = UINT64_MAX; + cstat->pto_count = 0; + cstat->loss_detection_timer = UINT64_MAX; + cstat->max_tx_udp_payload_size = + ngtcp2_conn_get_path_max_tx_udp_payload_size(conn); + cstat->cwnd = ngtcp2_cc_compute_initcwnd(cstat->max_tx_udp_payload_size); + cstat->ssthresh = UINT64_MAX; + cstat->congestion_recovery_start_ts = UINT64_MAX; + cstat->bytes_in_flight = 0; + cstat->delivery_rate_sec = 0; + cstat->pacing_interval = 0; + cstat->send_quantum = 64 * 1024; +} + +/* + * reset_conn_stat_recovery resets the fields related to the recovery + * function + */ +static void reset_conn_stat_recovery(ngtcp2_conn_stat *cstat) { + /* Initializes them with UINT64_MAX. */ + memset(cstat->loss_time, 0xff, sizeof(cstat->loss_time)); + memset(cstat->last_tx_pkt_ts, 0xff, sizeof(cstat->last_tx_pkt_ts)); +} + +/* + * conn_reset_conn_stat resets |cstat|. The following fields are not + * reset: initial_rtt and max_udp_payload_size. + */ +static void conn_reset_conn_stat(ngtcp2_conn *conn, ngtcp2_conn_stat *cstat) { + conn_reset_conn_stat_cc(conn, cstat); + reset_conn_stat_recovery(cstat); +} + +static void delete_scid(ngtcp2_ksl *scids, const ngtcp2_mem *mem) { + ngtcp2_ksl_it it; + + for (it = ngtcp2_ksl_begin(scids); !ngtcp2_ksl_it_end(&it); + ngtcp2_ksl_it_next(&it)) { + ngtcp2_mem_free(mem, ngtcp2_ksl_it_get(&it)); + } +} + +/* + * compute_pto computes PTO. + */ +static ngtcp2_duration compute_pto(ngtcp2_duration smoothed_rtt, + ngtcp2_duration rttvar, + ngtcp2_duration max_ack_delay) { + ngtcp2_duration var = ngtcp2_max_uint64(4 * rttvar, NGTCP2_GRANULARITY); + return smoothed_rtt + var + max_ack_delay; +} + +/* + * conn_compute_initial_pto computes PTO using the initial RTT. + */ +static ngtcp2_duration conn_compute_initial_pto(ngtcp2_conn *conn, + ngtcp2_pktns *pktns) { + ngtcp2_duration initial_rtt = conn->local.settings.initial_rtt; + ngtcp2_duration max_ack_delay; + + if (pktns->id == NGTCP2_PKTNS_ID_APPLICATION && + conn->remote.transport_params) { + max_ack_delay = conn->remote.transport_params->max_ack_delay; + } else { + max_ack_delay = 0; + } + return compute_pto(initial_rtt, initial_rtt / 2, max_ack_delay); +} + +/* + * conn_compute_pto computes the current PTO. + */ +static ngtcp2_duration conn_compute_pto(ngtcp2_conn *conn, + ngtcp2_pktns *pktns) { + ngtcp2_conn_stat *cstat = &conn->cstat; + ngtcp2_duration max_ack_delay; + + if (pktns->id == NGTCP2_PKTNS_ID_APPLICATION && + conn->remote.transport_params) { + max_ack_delay = conn->remote.transport_params->max_ack_delay; + } else { + max_ack_delay = 0; + } + return compute_pto(cstat->smoothed_rtt, cstat->rttvar, max_ack_delay); +} + +ngtcp2_duration ngtcp2_conn_compute_pto(ngtcp2_conn *conn, + ngtcp2_pktns *pktns) { + return conn_compute_pto(conn, pktns); +} + +/* + * conn_compute_pv_timeout_pto returns path validation timeout using + * the given |pto|. + */ +static ngtcp2_duration conn_compute_pv_timeout_pto(ngtcp2_conn *conn, + ngtcp2_duration pto) { + ngtcp2_duration initial_pto = conn_compute_initial_pto(conn, &conn->pktns); + + return 3 * ngtcp2_max_uint64(pto, initial_pto); +} + +/* + * conn_compute_pv_timeout returns path validation timeout. + */ +static ngtcp2_duration conn_compute_pv_timeout(ngtcp2_conn *conn) { + return conn_compute_pv_timeout_pto(conn, + conn_compute_pto(conn, &conn->pktns)); +} + +static void conn_handle_tx_ecn(ngtcp2_conn *conn, ngtcp2_pkt_info *pi, + uint16_t *prtb_entry_flags, ngtcp2_pktns *pktns, + const ngtcp2_pkt_hd *hd, ngtcp2_tstamp ts) { + assert(pi); + + if (pi->ecn != NGTCP2_ECN_NOT_ECT) { + /* We have already made a transition of validation state and + deceided to send UDP datagram with ECN bit set. Coalesced QUIC + packets also bear ECN bits set. */ + if (pktns->tx.ecn.start_pkt_num == INT64_MAX) { + pktns->tx.ecn.start_pkt_num = hd->pkt_num; + } + + ++pktns->tx.ecn.validation_pkt_sent; + + if (prtb_entry_flags) { + *prtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ECN; + } + + ++pktns->tx.ecn.ect0; + + return; + } + + switch (conn->tx.ecn.state) { + case NGTCP2_ECN_STATE_TESTING: + if (conn->tx.ecn.validation_start_ts == UINT64_MAX) { + assert(0 == pktns->tx.ecn.validation_pkt_sent); + assert(0 == pktns->tx.ecn.validation_pkt_lost); + + conn->tx.ecn.validation_start_ts = ts; + } else if (ts - conn->tx.ecn.validation_start_ts >= + 3 * conn_compute_pto(conn, pktns)) { + conn->tx.ecn.state = NGTCP2_ECN_STATE_UNKNOWN; + break; + } + + if (pktns->tx.ecn.start_pkt_num == INT64_MAX) { + pktns->tx.ecn.start_pkt_num = hd->pkt_num; + } + + ++pktns->tx.ecn.validation_pkt_sent; + + if (++conn->tx.ecn.dgram_sent == NGTCP2_ECN_MAX_NUM_VALIDATION_PKTS) { + conn->tx.ecn.state = NGTCP2_ECN_STATE_UNKNOWN; + } + /* fall through */ + case NGTCP2_ECN_STATE_CAPABLE: + /* pi is provided per UDP datagram. */ + assert(NGTCP2_ECN_NOT_ECT == pi->ecn); + + pi->ecn = NGTCP2_ECN_ECT_0; + + if (prtb_entry_flags) { + *prtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ECN; + } + + ++pktns->tx.ecn.ect0; + break; + case NGTCP2_ECN_STATE_UNKNOWN: + case NGTCP2_ECN_STATE_FAILED: + break; + default: + ngtcp2_unreachable(); + } +} + +static void conn_reset_ecn_validation_state(ngtcp2_conn *conn) { + ngtcp2_pktns *in_pktns = conn->in_pktns; + ngtcp2_pktns *hs_pktns = conn->hs_pktns; + ngtcp2_pktns *pktns = &conn->pktns; + + conn->tx.ecn.state = NGTCP2_ECN_STATE_TESTING; + conn->tx.ecn.validation_start_ts = UINT64_MAX; + conn->tx.ecn.dgram_sent = 0; + + if (in_pktns) { + in_pktns->tx.ecn.start_pkt_num = INT64_MAX; + in_pktns->tx.ecn.validation_pkt_sent = 0; + in_pktns->tx.ecn.validation_pkt_lost = 0; + } + + if (hs_pktns) { + hs_pktns->tx.ecn.start_pkt_num = INT64_MAX; + hs_pktns->tx.ecn.validation_pkt_sent = 0; + hs_pktns->tx.ecn.validation_pkt_lost = 0; + } + + pktns->tx.ecn.start_pkt_num = INT64_MAX; + pktns->tx.ecn.validation_pkt_sent = 0; + pktns->tx.ecn.validation_pkt_lost = 0; +} + +/* server_default_available_versions is the default available_versions + field sent by server. */ +static uint8_t server_default_available_versions[] = {0, 0, 0, 1}; + +/* + * available_versions_init writes |versions| of length |versionslen| + * in network byte order to the buffer pointed by |buf|, suitable for + * sending in available_versions field of version_information QUIC + * transport parameter. This function returns the pointer to the one + * beyond the last byte written. + */ +static void *available_versions_init(void *buf, const uint32_t *versions, + size_t versionslen) { + size_t i; + + for (i = 0; i < versionslen; ++i) { + buf = ngtcp2_put_uint32be(buf, versions[i]); + } + + return 0; +} + +static void +conn_set_local_transport_params(ngtcp2_conn *conn, + const ngtcp2_transport_params *params) { + ngtcp2_transport_params *p = &conn->local.transport_params; + uint32_t chosen_version = p->version_info.chosen_version; + + *p = *params; + + if (conn->server) { + p->version_info.chosen_version = chosen_version; + } else { + p->version_info.chosen_version = conn->client_chosen_version; + } + p->version_info.available_versions = conn->vneg.available_versions; + p->version_info.available_versionslen = conn->vneg.available_versionslen; + p->version_info_present = 1; +} + +static size_t buflen_align(size_t buflen) { + return (buflen + 0x7) & (size_t)~0x7; +} + +static void *buf_align(void *buf) { + return (void *)((uintptr_t)((uint8_t *)buf + 0x7) & (uintptr_t)~0x7); +} + +static void *buf_advance(void *buf, size_t n) { return (uint8_t *)buf + n; } + +static int conn_new(ngtcp2_conn **pconn, const ngtcp2_cid *dcid, + const ngtcp2_cid *scid, const ngtcp2_path *path, + uint32_t client_chosen_version, int callbacks_version, + const ngtcp2_callbacks *callbacks, int settings_version, + const ngtcp2_settings *settings, + int transport_params_version, + const ngtcp2_transport_params *params, + const ngtcp2_mem *mem, void *user_data, int server) { + int rv; + ngtcp2_scid *scident; + void *buf, *tokenbuf; + size_t buflen; + uint8_t fixed_bit_byte; + size_t i; + uint32_t *preferred_versions; + ngtcp2_settings settingsbuf; + ngtcp2_transport_params paramsbuf; + (void)callbacks_version; + (void)settings_version; + + settings = + ngtcp2_settings_convert_to_latest(&settingsbuf, settings_version, settings); + params = ngtcp2_transport_params_convert_to_latest( + ¶msbuf, transport_params_version, params); + + assert(settings->max_window <= NGTCP2_MAX_VARINT); + assert(settings->max_stream_window <= NGTCP2_MAX_VARINT); + assert(settings->max_tx_udp_payload_size); + assert(settings->max_tx_udp_payload_size <= NGTCP2_HARD_MAX_UDP_PAYLOAD_SIZE); + assert(settings->initial_pkt_num <= INT32_MAX); + assert(params->active_connection_id_limit >= + NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT); + assert(params->active_connection_id_limit <= NGTCP2_MAX_DCID_POOL_SIZE); + assert(params->initial_max_data <= NGTCP2_MAX_VARINT); + assert(params->initial_max_stream_data_bidi_local <= NGTCP2_MAX_VARINT); + assert(params->initial_max_stream_data_bidi_remote <= NGTCP2_MAX_VARINT); + assert(params->initial_max_stream_data_uni <= NGTCP2_MAX_VARINT); + assert((server && params->original_dcid_present) || + (!server && !params->original_dcid_present)); + assert(!params->initial_scid_present); + assert(server || !params->stateless_reset_token_present); + assert(server || !params->preferred_addr_present); + assert(server || !params->retry_scid_present); + assert(params->max_idle_timeout != UINT64_MAX); + assert(params->max_ack_delay < (1 << 14) * NGTCP2_MILLISECONDS); + assert(server || callbacks->client_initial); + assert(!server || callbacks->recv_client_initial); + assert(callbacks->recv_crypto_data); + assert(callbacks->encrypt); + assert(callbacks->decrypt); + assert(callbacks->hp_mask); + assert(server || callbacks->recv_retry); + assert(callbacks->rand); + assert(callbacks->get_new_connection_id); + assert(callbacks->update_key); + assert(callbacks->delete_crypto_aead_ctx); + assert(callbacks->delete_crypto_cipher_ctx); + assert(callbacks->get_path_challenge_data); + assert(!server || !ngtcp2_is_reserved_version(client_chosen_version)); + + for (i = 0; i < settings->pmtud_probeslen; ++i) { + assert(settings->pmtud_probes[i] > NGTCP2_MAX_UDP_PAYLOAD_SIZE); + } + + if (mem == NULL) { + mem = ngtcp2_mem_default(); + } + + buflen = sizeof(ngtcp2_conn); + if (settings->qlog_write) { + buflen = buflen_align(buflen); + buflen += NGTCP2_QLOG_BUFLEN; + } + + if (settings->pmtud_probeslen) { + buflen = buflen_align(buflen); + buflen += sizeof(settings->pmtud_probes[0]) * settings->pmtud_probeslen; + } + + if (settings->preferred_versionslen) { + buflen = buflen_align(buflen); + buflen += + sizeof(settings->preferred_versions[0]) * settings->preferred_versionslen; + } + + if (settings->available_versionslen) { + buflen = buflen_align(buflen); + buflen += + sizeof(settings->available_versions[0]) * settings->available_versionslen; + } else if (server) { + if (settings->preferred_versionslen) { + buflen = buflen_align(buflen); + buflen += sizeof(settings->preferred_versions[0]) * + settings->preferred_versionslen; + } + } else if (!ngtcp2_is_reserved_version(client_chosen_version)) { + buflen = buflen_align(buflen); + buflen += sizeof(client_chosen_version); + } + + buf = ngtcp2_mem_calloc(mem, 1, buflen); + if (buf == NULL) { + return NGTCP2_ERR_NOMEM; + } + + *pconn = buf; + buf = buf_advance(buf, sizeof(ngtcp2_conn)); + + (*pconn)->server = server; + + ngtcp2_objalloc_frame_chain_init(&(*pconn)->frc_objalloc, 16, mem); + ngtcp2_objalloc_rtb_entry_init(&(*pconn)->rtb_entry_objalloc, 16, mem); + ngtcp2_objalloc_strm_init(&(*pconn)->strm_objalloc, 16, mem); + + ngtcp2_static_ringbuf_dcid_bound_init(&(*pconn)->dcid.bound); + + ngtcp2_static_ringbuf_dcid_unused_init(&(*pconn)->dcid.unused); + + ngtcp2_static_ringbuf_dcid_retired_init(&(*pconn)->dcid.retired); + + ngtcp2_gaptr_init(&(*pconn)->dcid.seqgap, mem); + + ngtcp2_ksl_init(&(*pconn)->scid.set, cid_less, sizeof(ngtcp2_cid), mem); + + ngtcp2_pq_init(&(*pconn)->scid.used, retired_ts_less, mem); + + ngtcp2_map_init(&(*pconn)->strms, mem); + + ngtcp2_pq_init(&(*pconn)->tx.strmq, cycle_less, mem); + + ngtcp2_idtr_init(&(*pconn)->remote.bidi.idtr, mem); + + ngtcp2_idtr_init(&(*pconn)->remote.uni.idtr, mem); + + ngtcp2_static_ringbuf_path_challenge_init(&(*pconn)->rx.path_challenge); + + ngtcp2_log_init(&(*pconn)->log, scid, settings->log_printf, + settings->initial_ts, user_data); + ngtcp2_qlog_init(&(*pconn)->qlog, settings->qlog_write, settings->initial_ts, + user_data); + if ((*pconn)->qlog.write) { + buf = buf_align(buf); + ngtcp2_buf_init(&(*pconn)->qlog.buf, buf, NGTCP2_QLOG_BUFLEN); + buf = buf_advance(buf, NGTCP2_QLOG_BUFLEN); + } + + (*pconn)->local.settings = *settings; + + if (settings->tokenlen) { + tokenbuf = ngtcp2_mem_malloc(mem, settings->tokenlen); + if (tokenbuf == NULL) { + rv = NGTCP2_ERR_NOMEM; + goto fail_token; + } + memcpy(tokenbuf, settings->token, settings->tokenlen); + (*pconn)->local.settings.token = tokenbuf; + } else { + (*pconn)->local.settings.token = NULL; + } + + if (settings->pmtud_probeslen) { + (*pconn)->local.settings.pmtud_probes = buf_align(buf); + buf = ngtcp2_cpymem( + (uint16_t *)(*pconn)->local.settings.pmtud_probes, settings->pmtud_probes, + sizeof(settings->pmtud_probes[0]) * settings->pmtud_probeslen); + } + + if (!(*pconn)->local.settings.original_version) { + (*pconn)->local.settings.original_version = client_chosen_version; + } + + ngtcp2_dcid_init(&(*pconn)->dcid.current, 0, dcid, NULL); + ngtcp2_dcid_set_path(&(*pconn)->dcid.current, path); + + rv = ngtcp2_gaptr_push(&(*pconn)->dcid.seqgap, 0, 1); + if (rv != 0) { + goto fail_seqgap_push; + } + + conn_reset_conn_stat(*pconn, &(*pconn)->cstat); + (*pconn)->cstat.initial_rtt = settings->initial_rtt; + + ngtcp2_rst_init(&(*pconn)->rst); + + (*pconn)->cc_algo = settings->cc_algo; + + switch (settings->cc_algo) { + case NGTCP2_CC_ALGO_RENO: + ngtcp2_cc_reno_init(&(*pconn)->reno, &(*pconn)->log); + + break; + case NGTCP2_CC_ALGO_CUBIC: + ngtcp2_cc_cubic_init(&(*pconn)->cubic, &(*pconn)->log, &(*pconn)->rst); + + break; + case NGTCP2_CC_ALGO_BBR: + ngtcp2_cc_bbr_init(&(*pconn)->bbr, &(*pconn)->log, &(*pconn)->cstat, + &(*pconn)->rst, settings->initial_ts, callbacks->rand, + &settings->rand_ctx); + + break; + default: + ngtcp2_unreachable(); + } + + rv = pktns_new(&(*pconn)->in_pktns, NGTCP2_PKTNS_ID_INITIAL, &(*pconn)->rst, + &(*pconn)->cc, settings->initial_pkt_num, &(*pconn)->log, + &(*pconn)->qlog, &(*pconn)->rtb_entry_objalloc, + &(*pconn)->frc_objalloc, mem); + if (rv != 0) { + goto fail_in_pktns_init; + } + + rv = pktns_new(&(*pconn)->hs_pktns, NGTCP2_PKTNS_ID_HANDSHAKE, &(*pconn)->rst, + &(*pconn)->cc, settings->initial_pkt_num, &(*pconn)->log, + &(*pconn)->qlog, &(*pconn)->rtb_entry_objalloc, + &(*pconn)->frc_objalloc, mem); + if (rv != 0) { + goto fail_hs_pktns_init; + } + + pktns_init(&(*pconn)->pktns, NGTCP2_PKTNS_ID_APPLICATION, &(*pconn)->rst, + &(*pconn)->cc, settings->initial_pkt_num, &(*pconn)->log, + &(*pconn)->qlog, &(*pconn)->rtb_entry_objalloc, + &(*pconn)->frc_objalloc, mem); + + scident = ngtcp2_mem_malloc(mem, sizeof(*scident)); + if (scident == NULL) { + rv = NGTCP2_ERR_NOMEM; + goto fail_scident; + } + + /* Set stateless reset token later if it is available in the local + transport parameters */ + ngtcp2_scid_init(scident, 0, scid); + + rv = ngtcp2_ksl_insert(&(*pconn)->scid.set, NULL, &scident->cid, scident); + if (rv != 0) { + goto fail_scid_set_insert; + } + + scident = NULL; + + if (settings->preferred_versionslen) { + if (!server && !ngtcp2_is_reserved_version(client_chosen_version)) { + for (i = 0; i < settings->preferred_versionslen; ++i) { + if (settings->preferred_versions[i] == client_chosen_version) { + break; + } + } + + assert(i < settings->preferred_versionslen); + } + + preferred_versions = buf_align(buf); + buf = buf_advance(preferred_versions, sizeof(preferred_versions[0]) * + settings->preferred_versionslen); + + for (i = 0; i < settings->preferred_versionslen; ++i) { + assert(ngtcp2_is_supported_version(settings->preferred_versions[i])); + + preferred_versions[i] = settings->preferred_versions[i]; + } + + (*pconn)->vneg.preferred_versions = preferred_versions; + (*pconn)->vneg.preferred_versionslen = settings->preferred_versionslen; + } + + (*pconn)->local.settings.preferred_versions = NULL; + (*pconn)->local.settings.preferred_versionslen = 0; + + if (settings->available_versionslen) { + if (!server && !ngtcp2_is_reserved_version(client_chosen_version)) { + for (i = 0; i < settings->available_versionslen; ++i) { + if (settings->available_versions[i] == client_chosen_version) { + break; + } + } + + assert(i < settings->available_versionslen); + } + + for (i = 0; i < settings->available_versionslen; ++i) { + assert(ngtcp2_is_reserved_version(settings->available_versions[i]) || + ngtcp2_is_supported_version(settings->available_versions[i])); + } + + (*pconn)->vneg.available_versions = buf_align(buf); + (*pconn)->vneg.available_versionslen = + sizeof(uint32_t) * settings->available_versionslen; + + buf = available_versions_init((*pconn)->vneg.available_versions, + settings->available_versions, + settings->available_versionslen); + } else if (server) { + if (settings->preferred_versionslen) { + (*pconn)->vneg.available_versions = buf_align(buf); + (*pconn)->vneg.available_versionslen = + sizeof(uint32_t) * settings->preferred_versionslen; + + buf = available_versions_init((*pconn)->vneg.available_versions, + settings->preferred_versions, + settings->preferred_versionslen); + } else { + (*pconn)->vneg.available_versions = server_default_available_versions; + (*pconn)->vneg.available_versionslen = + sizeof(server_default_available_versions); + } + } else if (!ngtcp2_is_reserved_version(client_chosen_version)) { + (*pconn)->vneg.available_versions = buf_align(buf); + (*pconn)->vneg.available_versionslen = sizeof(uint32_t); + + buf = available_versions_init((*pconn)->vneg.available_versions, + &client_chosen_version, 1); + } + + (*pconn)->local.settings.available_versions = NULL; + (*pconn)->local.settings.available_versionslen = 0; + + (*pconn)->client_chosen_version = client_chosen_version; + + conn_set_local_transport_params(*pconn, params); + + callbacks->rand(&fixed_bit_byte, 1, &settings->rand_ctx); + if (fixed_bit_byte & 1) { + (*pconn)->flags |= NGTCP2_CONN_FLAG_CLEAR_FIXED_BIT; + } + + (*pconn)->keep_alive.last_ts = UINT64_MAX; + (*pconn)->keep_alive.timeout = UINT64_MAX; + + (*pconn)->oscid = *scid; + (*pconn)->callbacks = *callbacks; + (*pconn)->mem = mem; + (*pconn)->user_data = user_data; + (*pconn)->idle_ts = settings->initial_ts; + (*pconn)->crypto.key_update.confirmed_ts = UINT64_MAX; + (*pconn)->tx.last_max_data_ts = UINT64_MAX; + (*pconn)->tx.pacing.next_ts = UINT64_MAX; + (*pconn)->tx.last_blocked_offset = UINT64_MAX; + (*pconn)->early.discard_started_ts = UINT64_MAX; + + conn_reset_ecn_validation_state(*pconn); + + ngtcp2_qlog_start(&(*pconn)->qlog, + server + ? ((*pconn)->local.transport_params.retry_scid_present + ? &(*pconn)->local.transport_params.retry_scid + : &(*pconn)->local.transport_params.original_dcid) + : dcid, + server); + + return 0; + +fail_scid_set_insert: + ngtcp2_mem_free(mem, scident); +fail_scident: + pktns_del((*pconn)->hs_pktns, mem); +fail_hs_pktns_init: + pktns_del((*pconn)->in_pktns, mem); +fail_in_pktns_init: + ngtcp2_gaptr_free(&(*pconn)->dcid.seqgap); +fail_seqgap_push: + ngtcp2_mem_free(mem, (uint8_t *)(*pconn)->local.settings.token); +fail_token: + ngtcp2_mem_free(mem, *pconn); + + return rv; +} + +int ngtcp2_conn_client_new_versioned( + ngtcp2_conn **pconn, const ngtcp2_cid *dcid, const ngtcp2_cid *scid, + const ngtcp2_path *path, uint32_t client_chosen_version, + int callbacks_version, const ngtcp2_callbacks *callbacks, + int settings_version, const ngtcp2_settings *settings, + int transport_params_version, const ngtcp2_transport_params *params, + const ngtcp2_mem *mem, void *user_data) { + int rv; + + rv = conn_new(pconn, dcid, scid, path, client_chosen_version, + callbacks_version, callbacks, settings_version, settings, + transport_params_version, params, mem, user_data, 0); + if (rv != 0) { + return rv; + } + (*pconn)->rcid = *dcid; + (*pconn)->state = NGTCP2_CS_CLIENT_INITIAL; + (*pconn)->local.bidi.next_stream_id = 0; + (*pconn)->local.uni.next_stream_id = 2; + + rv = ngtcp2_conn_commit_local_transport_params(*pconn); + if (rv != 0) { + ngtcp2_conn_del(*pconn); + return rv; + } + + return 0; +} + +int ngtcp2_conn_server_new_versioned( + ngtcp2_conn **pconn, const ngtcp2_cid *dcid, const ngtcp2_cid *scid, + const ngtcp2_path *path, uint32_t client_chosen_version, + int callbacks_version, const ngtcp2_callbacks *callbacks, + int settings_version, const ngtcp2_settings *settings, + int transport_params_version, const ngtcp2_transport_params *params, + const ngtcp2_mem *mem, void *user_data) { + int rv; + + rv = conn_new(pconn, dcid, scid, path, client_chosen_version, + callbacks_version, callbacks, settings_version, settings, + transport_params_version, params, mem, user_data, 1); + if (rv != 0) { + return rv; + } + + (*pconn)->state = NGTCP2_CS_SERVER_INITIAL; + (*pconn)->local.bidi.next_stream_id = 1; + (*pconn)->local.uni.next_stream_id = 3; + + if ((*pconn)->local.settings.tokenlen) { + /* Usage of token lifts amplification limit */ + (*pconn)->dcid.current.flags |= NGTCP2_DCID_FLAG_PATH_VALIDATED; + } + + return 0; +} + +/* + * conn_fc_credits returns the number of bytes allowed to be sent to + * the given stream. Both connection and stream level flow control + * credits are considered. + */ +static uint64_t conn_fc_credits(ngtcp2_conn *conn, ngtcp2_strm *strm) { + return ngtcp2_min_uint64(strm->tx.max_offset - strm->tx.offset, + conn->tx.max_offset - conn->tx.offset); +} + +/* + * conn_enforce_flow_control returns the number of bytes allowed to be + * sent to the given stream. |len| might be shorted because of + * available flow control credits. + */ +static uint64_t conn_enforce_flow_control(ngtcp2_conn *conn, ngtcp2_strm *strm, + uint64_t len) { + uint64_t fc_credits = conn_fc_credits(conn, strm); + return ngtcp2_min_uint64(len, fc_credits); +} + +static int delete_strms_each(void *data, void *ptr) { + ngtcp2_conn *conn = ptr; + ngtcp2_strm *s = data; + + ngtcp2_strm_free(s); + ngtcp2_objalloc_strm_release(&conn->strm_objalloc, s); + + return 0; +} + +static void conn_vneg_crypto_free(ngtcp2_conn *conn) { + if (conn->vneg.rx.ckm) { + conn_call_delete_crypto_aead_ctx(conn, &conn->vneg.rx.ckm->aead_ctx); + } + conn_call_delete_crypto_cipher_ctx(conn, &conn->vneg.rx.hp_ctx); + + if (conn->vneg.tx.ckm) { + conn_call_delete_crypto_aead_ctx(conn, &conn->vneg.tx.ckm->aead_ctx); + } + conn_call_delete_crypto_cipher_ctx(conn, &conn->vneg.tx.hp_ctx); + + ngtcp2_crypto_km_del(conn->vneg.rx.ckm, conn->mem); + ngtcp2_crypto_km_del(conn->vneg.tx.ckm, conn->mem); +} + +void ngtcp2_conn_del(ngtcp2_conn *conn) { + if (conn == NULL) { + return; + } + + ngtcp2_qlog_end(&conn->qlog); + + if (conn->early.ckm) { + conn_call_delete_crypto_aead_ctx(conn, &conn->early.ckm->aead_ctx); + } + conn_call_delete_crypto_cipher_ctx(conn, &conn->early.hp_ctx); + + if (conn->crypto.key_update.old_rx_ckm) { + conn_call_delete_crypto_aead_ctx( + conn, &conn->crypto.key_update.old_rx_ckm->aead_ctx); + } + if (conn->crypto.key_update.new_rx_ckm) { + conn_call_delete_crypto_aead_ctx( + conn, &conn->crypto.key_update.new_rx_ckm->aead_ctx); + } + if (conn->crypto.key_update.new_tx_ckm) { + conn_call_delete_crypto_aead_ctx( + conn, &conn->crypto.key_update.new_tx_ckm->aead_ctx); + } + + if (conn->pktns.crypto.rx.ckm) { + conn_call_delete_crypto_aead_ctx(conn, + &conn->pktns.crypto.rx.ckm->aead_ctx); + } + conn_call_delete_crypto_cipher_ctx(conn, &conn->pktns.crypto.rx.hp_ctx); + + if (conn->pktns.crypto.tx.ckm) { + conn_call_delete_crypto_aead_ctx(conn, + &conn->pktns.crypto.tx.ckm->aead_ctx); + } + conn_call_delete_crypto_cipher_ctx(conn, &conn->pktns.crypto.tx.hp_ctx); + + if (conn->hs_pktns) { + if (conn->hs_pktns->crypto.rx.ckm) { + conn_call_delete_crypto_aead_ctx( + conn, &conn->hs_pktns->crypto.rx.ckm->aead_ctx); + } + conn_call_delete_crypto_cipher_ctx(conn, &conn->hs_pktns->crypto.rx.hp_ctx); + + if (conn->hs_pktns->crypto.tx.ckm) { + conn_call_delete_crypto_aead_ctx( + conn, &conn->hs_pktns->crypto.tx.ckm->aead_ctx); + } + conn_call_delete_crypto_cipher_ctx(conn, &conn->hs_pktns->crypto.tx.hp_ctx); + } + if (conn->in_pktns) { + if (conn->in_pktns->crypto.rx.ckm) { + conn_call_delete_crypto_aead_ctx( + conn, &conn->in_pktns->crypto.rx.ckm->aead_ctx); + } + conn_call_delete_crypto_cipher_ctx(conn, &conn->in_pktns->crypto.rx.hp_ctx); + + if (conn->in_pktns->crypto.tx.ckm) { + conn_call_delete_crypto_aead_ctx( + conn, &conn->in_pktns->crypto.tx.ckm->aead_ctx); + } + conn_call_delete_crypto_cipher_ctx(conn, &conn->in_pktns->crypto.tx.hp_ctx); + } + + conn_call_delete_crypto_aead_ctx(conn, &conn->crypto.retry_aead_ctx); + + ngtcp2_transport_params_del(conn->remote.transport_params, conn->mem); + ngtcp2_transport_params_del(conn->remote.pending_transport_params, conn->mem); + + conn_vneg_crypto_free(conn); + + ngtcp2_mem_free(conn->mem, conn->crypto.decrypt_buf.base); + ngtcp2_mem_free(conn->mem, conn->crypto.decrypt_hp_buf.base); + ngtcp2_mem_free(conn->mem, (uint8_t *)conn->local.settings.token); + + ngtcp2_crypto_km_del(conn->crypto.key_update.old_rx_ckm, conn->mem); + ngtcp2_crypto_km_del(conn->crypto.key_update.new_rx_ckm, conn->mem); + ngtcp2_crypto_km_del(conn->crypto.key_update.new_tx_ckm, conn->mem); + ngtcp2_crypto_km_del(conn->early.ckm, conn->mem); + + pktns_free(&conn->pktns, conn->mem); + pktns_del(conn->hs_pktns, conn->mem); + pktns_del(conn->in_pktns, conn->mem); + + ngtcp2_pmtud_del(conn->pmtud); + ngtcp2_pv_del(conn->pv); + + ngtcp2_mem_free(conn->mem, (uint8_t *)conn->rx.ccerr.reason); + + ngtcp2_idtr_free(&conn->remote.uni.idtr); + ngtcp2_idtr_free(&conn->remote.bidi.idtr); + ngtcp2_mem_free(conn->mem, conn->tx.ack); + ngtcp2_pq_free(&conn->tx.strmq); + ngtcp2_map_each(&conn->strms, delete_strms_each, (void *)conn); + ngtcp2_map_free(&conn->strms); + + ngtcp2_pq_free(&conn->scid.used); + delete_scid(&conn->scid.set, conn->mem); + ngtcp2_ksl_free(&conn->scid.set); + ngtcp2_gaptr_free(&conn->dcid.seqgap); + + ngtcp2_objalloc_free(&conn->strm_objalloc); + ngtcp2_objalloc_free(&conn->rtb_entry_objalloc); + ngtcp2_objalloc_free(&conn->frc_objalloc); + + ngtcp2_mem_free(conn->mem, conn); +} + +/* + * conn_ensure_ack_ranges makes sure that conn->tx.ack->ack.ranges can + * contain at least |n| additional ngtcp2_ack_range. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int conn_ensure_ack_ranges(ngtcp2_conn *conn, size_t n) { + ngtcp2_frame *fr; + size_t max = conn->tx.max_ack_ranges; + + if (n <= max) { + return 0; + } + + max *= 2; + + assert(max >= n); + + fr = ngtcp2_mem_realloc(conn->mem, conn->tx.ack, + sizeof(ngtcp2_ack) + sizeof(ngtcp2_ack_range) * max); + if (fr == NULL) { + return NGTCP2_ERR_NOMEM; + } + + conn->tx.ack = fr; + conn->tx.max_ack_ranges = max; + + return 0; +} + +/* + * conn_compute_ack_delay computes ACK delay for outgoing protected + * ACK. + */ +static ngtcp2_duration conn_compute_ack_delay(ngtcp2_conn *conn) { + return ngtcp2_min_uint64(conn->local.transport_params.max_ack_delay, + conn->cstat.smoothed_rtt / 8); +} + +int ngtcp2_conn_create_ack_frame(ngtcp2_conn *conn, ngtcp2_frame **pfr, + ngtcp2_pktns *pktns, uint8_t type, + ngtcp2_tstamp ts, ngtcp2_duration ack_delay, + uint64_t ack_delay_exponent) { + /* TODO Measure an actual size of ACK blocks to find the best + default value. */ + const size_t initial_max_ack_ranges = 8; + int64_t last_pkt_num; + ngtcp2_acktr *acktr = &pktns->acktr; + ngtcp2_ack_range *range; + ngtcp2_ksl_it it; + ngtcp2_acktr_entry *rpkt; + ngtcp2_ack *ack; + size_t range_idx; + ngtcp2_tstamp largest_ack_ts; + int rv; + + if (acktr->flags & NGTCP2_ACKTR_FLAG_IMMEDIATE_ACK) { + ack_delay = 0; + } + + if (!ngtcp2_acktr_require_active_ack(acktr, ack_delay, ts)) { + return 0; + } + + it = ngtcp2_acktr_get(acktr); + if (ngtcp2_ksl_it_end(&it)) { + ngtcp2_acktr_commit_ack(acktr); + return 0; + } + + if (conn->tx.ack == NULL) { + conn->tx.ack = ngtcp2_mem_malloc( + conn->mem, + sizeof(ngtcp2_ack) + sizeof(ngtcp2_ack_range) * initial_max_ack_ranges); + if (conn->tx.ack == NULL) { + return NGTCP2_ERR_NOMEM; + } + conn->tx.max_ack_ranges = initial_max_ack_ranges; + } + + ack = &conn->tx.ack->ack; + + if (pktns->rx.ecn.ect0 || pktns->rx.ecn.ect1 || pktns->rx.ecn.ce) { + ack->type = NGTCP2_FRAME_ACK_ECN; + ack->ecn.ect0 = pktns->rx.ecn.ect0; + ack->ecn.ect1 = pktns->rx.ecn.ect1; + ack->ecn.ce = pktns->rx.ecn.ce; + } else { + ack->type = NGTCP2_FRAME_ACK; + } + ack->rangecnt = 0; + + rpkt = ngtcp2_ksl_it_get(&it); + + if (rpkt->pkt_num == pktns->rx.max_pkt_num) { + last_pkt_num = rpkt->pkt_num - (int64_t)(rpkt->len - 1); + largest_ack_ts = rpkt->tstamp; + ack->largest_ack = rpkt->pkt_num; + ack->first_ack_range = rpkt->len - 1; + + ngtcp2_ksl_it_next(&it); + } else if (rpkt->pkt_num + 1 == pktns->rx.max_pkt_num) { + last_pkt_num = rpkt->pkt_num - (int64_t)(rpkt->len - 1); + largest_ack_ts = pktns->rx.max_pkt_ts; + ack->largest_ack = pktns->rx.max_pkt_num; + ack->first_ack_range = rpkt->len; + + ngtcp2_ksl_it_next(&it); + } else { + assert(rpkt->pkt_num < pktns->rx.max_pkt_num); + + last_pkt_num = pktns->rx.max_pkt_num; + largest_ack_ts = pktns->rx.max_pkt_ts; + ack->largest_ack = pktns->rx.max_pkt_num; + ack->first_ack_range = 0; + } + + if (type == NGTCP2_PKT_1RTT) { + ack->ack_delay_unscaled = ts - largest_ack_ts; + ack->ack_delay = ack->ack_delay_unscaled / NGTCP2_MICROSECONDS / + (1ULL << ack_delay_exponent); + } else { + ack->ack_delay_unscaled = 0; + ack->ack_delay = 0; + } + + for (; !ngtcp2_ksl_it_end(&it); ngtcp2_ksl_it_next(&it)) { + if (ack->rangecnt == NGTCP2_MAX_ACK_RANGES) { + break; + } + + rpkt = ngtcp2_ksl_it_get(&it); + + range_idx = ack->rangecnt++; + rv = conn_ensure_ack_ranges(conn, ack->rangecnt); + if (rv != 0) { + return rv; + } + ack = &conn->tx.ack->ack; + range = &ack->ranges[range_idx]; + range->gap = (uint64_t)(last_pkt_num - rpkt->pkt_num - 2); + range->len = rpkt->len - 1; + + last_pkt_num = rpkt->pkt_num - (int64_t)(rpkt->len - 1); + } + + /* TODO Just remove entries which cannot fit into a single ACK frame + for now. */ + if (!ngtcp2_ksl_it_end(&it)) { + ngtcp2_acktr_forget(acktr, ngtcp2_ksl_it_get(&it)); + } + + *pfr = conn->tx.ack; + + return 0; +} + +/* + * conn_ppe_write_frame writes |fr| to |ppe|. If |hd_logged| is not + * NULL and |*hd_logged| is zero, packet header is logged, and 1 is + * assigned to |*hd_logged|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer is too small. + */ +static int conn_ppe_write_frame_hd_log(ngtcp2_conn *conn, ngtcp2_ppe *ppe, + int *hd_logged, const ngtcp2_pkt_hd *hd, + ngtcp2_frame *fr) { + int rv; + + rv = ngtcp2_ppe_encode_frame(ppe, fr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + return rv; + } + + if (hd_logged && !*hd_logged) { + *hd_logged = 1; + ngtcp2_log_tx_pkt_hd(&conn->log, hd); + ngtcp2_qlog_pkt_sent_start(&conn->qlog); + } + + ngtcp2_log_tx_fr(&conn->log, hd, fr); + ngtcp2_qlog_write_frame(&conn->qlog, fr); + + return 0; +} + +/* + * conn_ppe_write_frame writes |fr| to |ppe|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer is too small. + */ +static int conn_ppe_write_frame(ngtcp2_conn *conn, ngtcp2_ppe *ppe, + const ngtcp2_pkt_hd *hd, ngtcp2_frame *fr) { + return conn_ppe_write_frame_hd_log(conn, ppe, NULL, hd, fr); +} + +/* + * conn_on_pkt_sent is called when new non-ACK-only packet is sent. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + */ +static int conn_on_pkt_sent(ngtcp2_conn *conn, ngtcp2_pktns *pktns, + ngtcp2_rtb_entry *ent) { + ngtcp2_rtb *rtb = &pktns->rtb; + int rv; + + /* This function implements OnPacketSent, but it handles only + non-ACK-only packet. */ + rv = ngtcp2_rtb_add(rtb, ent, &conn->cstat); + if (rv != 0) { + return rv; + } + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) { + conn->cstat.last_tx_pkt_ts[pktns->id] = ent->ts; + } + + ngtcp2_conn_set_loss_detection_timer(conn, ent->ts); + + return 0; +} + +/* + * pktns_select_pkt_numlen selects shortest packet number encoding for + * the next packet number based on the largest acknowledged packet + * number. It returns the number of bytes to encode the packet + * number. + */ +static size_t pktns_select_pkt_numlen(ngtcp2_pktns *pktns) { + int64_t pkt_num = pktns->tx.last_pkt_num + 1; + ngtcp2_rtb *rtb = &pktns->rtb; + int64_t n = pkt_num - rtb->largest_acked_tx_pkt_num; + + if (NGTCP2_MAX_PKT_NUM / 2 < n) { + return 4; + } + + n = n * 2 - 1; + + if (n > 0xffffff) { + return 4; + } + if (n > 0xffff) { + return 3; + } + if (n > 0xff) { + return 2; + } + return 1; +} + +/* + * conn_get_cwnd returns cwnd for the current path. + */ +static uint64_t conn_get_cwnd(ngtcp2_conn *conn) { + return conn->pv && (conn->pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) + ? ngtcp2_cc_compute_initcwnd(conn->cstat.max_tx_udp_payload_size) + : conn->cstat.cwnd; +} + +/* + * conn_cwnd_is_zero returns nonzero if the number of bytes the local + * endpoint can sent at this time is zero. + */ +static int conn_cwnd_is_zero(ngtcp2_conn *conn) { + uint64_t bytes_in_flight = conn->cstat.bytes_in_flight; + uint64_t cwnd = conn_get_cwnd(conn); + + if (bytes_in_flight >= cwnd) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_LDC, + "cwnd limited bytes_in_flight=%lu cwnd=%lu", + bytes_in_flight, cwnd); + } + + return bytes_in_flight >= cwnd; +} + +/* + * conn_retry_early_payloadlen returns the estimated wire length of + * the first STREAM frame of 0-RTT packet which should be + * retransmitted due to Retry packet. + */ +static uint64_t conn_retry_early_payloadlen(ngtcp2_conn *conn) { + ngtcp2_frame_chain *frc; + ngtcp2_strm *strm; + uint64_t len; + + if (conn->flags & NGTCP2_CONN_FLAG_EARLY_DATA_REJECTED) { + return 0; + } + + for (; !ngtcp2_pq_empty(&conn->tx.strmq);) { + strm = ngtcp2_conn_tx_strmq_top(conn); + if (ngtcp2_strm_streamfrq_empty(strm)) { + ngtcp2_conn_tx_strmq_pop(conn); + continue; + } + + frc = ngtcp2_strm_streamfrq_top(strm); + + len = ngtcp2_vec_len(frc->fr.stream.data, frc->fr.stream.datacnt) + + NGTCP2_STREAM_OVERHEAD; + + /* Take the min because in conn_should_pad_pkt we take max in + order to deal with unbreakable DATAGRAM. */ + return ngtcp2_min_uint64(len, NGTCP2_MIN_COALESCED_PAYLOADLEN); + } + + return 0; +} + +/* + * conn_verify_dcid verifies that destination connection ID in |hd| is + * valid for the connection. If it is successfully verified and the + * remote endpoint uses new DCID in the packet, nonzero value is + * assigned to |*pnew_cid_used| if it is not NULL. Otherwise 0 is + * assigned to it. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_INVALID_ARGUMENT + * |dcid| is not known to the local endpoint. + */ +static int conn_verify_dcid(ngtcp2_conn *conn, int *pnew_cid_used, + const ngtcp2_pkt_hd *hd) { + ngtcp2_ksl_it it; + ngtcp2_scid *scid; + int rv; + + it = ngtcp2_ksl_lower_bound(&conn->scid.set, &hd->dcid); + if (ngtcp2_ksl_it_end(&it)) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + scid = ngtcp2_ksl_it_get(&it); + if (!ngtcp2_cid_eq(&scid->cid, &hd->dcid)) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + if (!(scid->flags & NGTCP2_SCID_FLAG_USED)) { + scid->flags |= NGTCP2_SCID_FLAG_USED; + + if (scid->pe.index == NGTCP2_PQ_BAD_INDEX) { + rv = ngtcp2_pq_push(&conn->scid.used, &scid->pe); + if (rv != 0) { + return rv; + } + } + + if (pnew_cid_used) { + *pnew_cid_used = 1; + } + } else if (pnew_cid_used) { + *pnew_cid_used = 0; + } + + return 0; +} + +/* + * conn_should_pad_pkt returns nonzero if the packet should be padded. + * |type| is the type of packet. |left| is the space left in packet + * buffer. |write_datalen| is the number of bytes which will be sent + * in the next, coalesced 0-RTT packet. + */ +static int conn_should_pad_pkt(ngtcp2_conn *conn, uint8_t type, size_t left, + uint64_t write_datalen, int ack_eliciting, + int require_padding) { + uint64_t min_payloadlen; + + if (type == NGTCP2_PKT_INITIAL) { + if (conn->server) { + if (!ack_eliciting) { + return 0; + } + + if ((conn->hs_pktns->crypto.tx.ckm && + (conn->hs_pktns->rtb.probe_pkt_left || + !ngtcp2_strm_streamfrq_empty(&conn->hs_pktns->crypto.strm) || + !ngtcp2_acktr_empty(&conn->hs_pktns->acktr))) || + conn->pktns.crypto.tx.ckm) { + /* If we have something to send in Handshake or 1RTT packet, + then add PADDING in that packet. */ + min_payloadlen = NGTCP2_MIN_COALESCED_PAYLOADLEN; + } else { + return 1; + } + } else { + if (conn->hs_pktns->crypto.tx.ckm && + (conn->hs_pktns->rtb.probe_pkt_left || + !ngtcp2_strm_streamfrq_empty(&conn->hs_pktns->crypto.strm) || + !ngtcp2_acktr_empty(&conn->hs_pktns->acktr))) { + /* If we have something to send in Handshake packet, then add + PADDING in Handshake packet. */ + min_payloadlen = NGTCP2_MIN_COALESCED_PAYLOADLEN; + } else if (conn->early.ckm && write_datalen > 0) { + /* If we have something to send in 0RTT packet, then add + PADDING in that packet. Take maximum in case that + write_datalen includes DATAGRAM which cannot be split. */ + min_payloadlen = + ngtcp2_max_uint64(write_datalen, NGTCP2_MIN_COALESCED_PAYLOADLEN); + } else { + return 1; + } + } + } else { + assert(type == NGTCP2_PKT_HANDSHAKE); + + if (!require_padding) { + return 0; + } + + if (!conn->pktns.crypto.tx.ckm) { + return 1; + } + + min_payloadlen = NGTCP2_MIN_COALESCED_PAYLOADLEN; + } + + /* TODO the next packet type should be taken into account */ + return left < + /* TODO Assuming that pkt_num is encoded in 1 byte. */ + NGTCP2_MIN_LONG_HEADERLEN + conn->dcid.current.cid.datalen + + conn->oscid.datalen + NGTCP2_PKT_LENGTHLEN - 1 + min_payloadlen + + NGTCP2_MAX_AEAD_OVERHEAD; +} + +static void conn_restart_timer_on_write(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + conn->idle_ts = ts; + conn->flags &= (uint32_t)~NGTCP2_CONN_FLAG_RESTART_IDLE_TIMER_ON_WRITE; +} + +static void conn_restart_timer_on_read(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + conn->idle_ts = ts; + conn->flags |= NGTCP2_CONN_FLAG_RESTART_IDLE_TIMER_ON_WRITE; +} + +/* + * conn_keep_alive_enabled returns nonzero if keep-alive is enabled. + */ +static int conn_keep_alive_enabled(ngtcp2_conn *conn) { + return conn->keep_alive.last_ts != UINT64_MAX && + conn->keep_alive.timeout != UINT64_MAX; +} + +/* + * conn_keep_alive_expired returns nonzero if keep-alive timer has + * expired. + */ +static int conn_keep_alive_expired(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + return ngtcp2_tstamp_elapsed(conn->keep_alive.last_ts, + conn->keep_alive.timeout, ts); +} + +/* + * conn_keep_alive_expiry returns the expiry time of keep-alive timer. + */ +static ngtcp2_tstamp conn_keep_alive_expiry(ngtcp2_conn *conn) { + if ((conn->flags & NGTCP2_CONN_FLAG_KEEP_ALIVE_CANCELLED) || + !(conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_COMPLETED) || + !conn_keep_alive_enabled(conn) || + conn->keep_alive.last_ts >= UINT64_MAX - conn->keep_alive.timeout) { + return UINT64_MAX; + } + + return conn->keep_alive.last_ts + conn->keep_alive.timeout; +} + +/* + * conn_cancel_expired_keep_alive_timer cancels the expired keep-alive + * timer. + */ +static void conn_cancel_expired_keep_alive_timer(ngtcp2_conn *conn, + ngtcp2_tstamp ts) { + if (!(conn->flags & NGTCP2_CONN_FLAG_KEEP_ALIVE_CANCELLED) && + conn_keep_alive_expired(conn, ts)) { + conn->flags |= NGTCP2_CONN_FLAG_KEEP_ALIVE_CANCELLED; + } +} + +/* + * conn_update_keep_alive_last_ts updates the base time point of + * keep-alive timer. + */ +static void conn_update_keep_alive_last_ts(ngtcp2_conn *conn, + ngtcp2_tstamp ts) { + conn->keep_alive.last_ts = ts; + conn->flags &= (uint32_t)~NGTCP2_CONN_FLAG_KEEP_ALIVE_CANCELLED; +} + +void ngtcp2_conn_set_keep_alive_timeout(ngtcp2_conn *conn, + ngtcp2_duration timeout) { + if (timeout == 0) { + timeout = UINT64_MAX; + } + + conn->keep_alive.timeout = timeout; +} + +/* + * NGTCP2_PKT_PACING_OVERHEAD defines overhead of userspace event + * loop. Packet pacing might require sub milliseconds packet spacing, + * but userspace event loop might not offer such precision. + * Typically, if delay is 0.5 microseconds, the actual delay after + * which we can send packet is well over 1 millisecond when event loop + * is involved (which includes other stuff, like reading packets etc + * in a typical single threaded use case). + */ +#define NGTCP2_PKT_PACING_OVERHEAD NGTCP2_MILLISECONDS + +static void conn_cancel_expired_pkt_tx_timer(ngtcp2_conn *conn, + ngtcp2_tstamp ts) { + if (conn->tx.pacing.next_ts == UINT64_MAX) { + return; + } + + if (conn->tx.pacing.next_ts > ts + NGTCP2_PKT_PACING_OVERHEAD) { + return; + } + + conn->tx.pacing.next_ts = UINT64_MAX; +} + +static int conn_pacing_pkt_tx_allowed(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + return conn->tx.pacing.next_ts == UINT64_MAX || + conn->tx.pacing.next_ts <= ts + NGTCP2_PKT_PACING_OVERHEAD; +} + +static uint8_t conn_pkt_flags(ngtcp2_conn *conn) { + if (conn->remote.transport_params && + conn->remote.transport_params->grease_quic_bit && + (conn->flags & NGTCP2_CONN_FLAG_CLEAR_FIXED_BIT)) { + return NGTCP2_PKT_FLAG_FIXED_BIT_CLEAR; + } + + return NGTCP2_PKT_FLAG_NONE; +} + +static uint8_t conn_pkt_flags_long(ngtcp2_conn *conn) { + return NGTCP2_PKT_FLAG_LONG_FORM | conn_pkt_flags(conn); +} + +static uint8_t conn_pkt_flags_short(ngtcp2_conn *conn) { + return (uint8_t)(conn_pkt_flags(conn) | ((conn->pktns.crypto.tx.ckm->flags & + NGTCP2_CRYPTO_KM_FLAG_KEY_PHASE_ONE) + ? NGTCP2_PKT_FLAG_KEY_PHASE + : NGTCP2_PKT_FLAG_NONE)); +} + +static size_t conn_min_pktlen(ngtcp2_conn *conn); + +/* + * conn_write_handshake_pkt writes handshake packet in the buffer + * pointed by |dest| whose length is |destlen|. |dgram_offset| is the + * offset in UDP datagram payload where this QUIC packet is positioned + * at. |type| specifies long packet type. It should be either + * NGTCP2_PKT_INITIAL or NGTCP2_PKT_HANDSHAKE_PKT. + * + * |write_datalen| is the minimum length of application data ready to + * send in subsequent 0RTT packet. + * + * This function returns the number of bytes written in |dest| if it + * succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static ngtcp2_ssize +conn_write_handshake_pkt(ngtcp2_conn *conn, ngtcp2_pkt_info *pi, uint8_t *dest, + size_t destlen, size_t dgram_offset, uint8_t type, + uint8_t flags, uint64_t write_datalen, + ngtcp2_tstamp ts) { + int rv; + ngtcp2_ppe ppe; + ngtcp2_pkt_hd hd; + ngtcp2_frame_chain *frq = NULL, **pfrc = &frq; + ngtcp2_frame_chain *nfrc; + ngtcp2_frame *ackfr = NULL, lfr; + ngtcp2_ssize spktlen; + ngtcp2_crypto_cc cc; + ngtcp2_rtb_entry *rtbent; + ngtcp2_pktns *pktns; + size_t left; + uint16_t rtb_entry_flags = NGTCP2_RTB_ENTRY_FLAG_NONE; + int require_padding = (flags & NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING) != 0; + int pkt_empty = 1; + int min_padded = 0; + int padded = 0; + int hd_logged = 0; + uint64_t crypto_offset; + ngtcp2_ssize num_reclaimed; + uint32_t version; + + switch (type) { + case NGTCP2_PKT_INITIAL: + if (!conn->in_pktns) { + return 0; + } + assert(conn->in_pktns->crypto.tx.ckm); + pktns = conn->in_pktns; + version = conn->negotiated_version ? conn->negotiated_version + : conn->client_chosen_version; + if (version == conn->client_chosen_version) { + cc.ckm = pktns->crypto.tx.ckm; + cc.hp_ctx = pktns->crypto.tx.hp_ctx; + } else { + assert(conn->vneg.version == version); + + cc.ckm = conn->vneg.tx.ckm; + cc.hp_ctx = conn->vneg.tx.hp_ctx; + } + break; + case NGTCP2_PKT_HANDSHAKE: + if (!conn->hs_pktns || !conn->hs_pktns->crypto.tx.ckm) { + return 0; + } + pktns = conn->hs_pktns; + version = conn->negotiated_version; + cc.ckm = pktns->crypto.tx.ckm; + cc.hp_ctx = pktns->crypto.tx.hp_ctx; + break; + default: + ngtcp2_unreachable(); + } + + cc.aead = pktns->crypto.ctx.aead; + cc.hp = pktns->crypto.ctx.hp; + cc.encrypt = conn->callbacks.encrypt; + cc.hp_mask = conn->callbacks.hp_mask; + + ngtcp2_pkt_hd_init( + &hd, conn_pkt_flags_long(conn), type, &conn->dcid.current.cid, &conn->oscid, + pktns->tx.last_pkt_num + 1, pktns_select_pkt_numlen(pktns), version, 0); + + if (!conn->server && type == NGTCP2_PKT_INITIAL && + conn->local.settings.tokenlen) { + hd.token = conn->local.settings.token; + hd.tokenlen = conn->local.settings.tokenlen; + } + + ngtcp2_ppe_init(&ppe, dest, destlen, dgram_offset, &cc); + + rv = ngtcp2_ppe_encode_hd(&ppe, &hd); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + return 0; + } + + if (!ngtcp2_ppe_ensure_hp_sample(&ppe)) { + return 0; + } + + rv = ngtcp2_conn_create_ack_frame(conn, &ackfr, pktns, type, ts, + /* ack_delay = */ 0, + NGTCP2_DEFAULT_ACK_DELAY_EXPONENT); + if (rv != 0) { + ngtcp2_frame_chain_list_objalloc_del(frq, &conn->frc_objalloc, conn->mem); + return rv; + } + + if (ackfr) { + rv = conn_ppe_write_frame_hd_log(conn, &ppe, &hd_logged, &hd, ackfr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + } else { + ngtcp2_acktr_commit_ack(&pktns->acktr); + ngtcp2_acktr_add_ack(&pktns->acktr, hd.pkt_num, ackfr->ack.largest_ack); + pkt_empty = 0; + } + } + + /* Server requires at least NGTCP2_MAX_UDP_PAYLOAD_SIZE bytes in + order to send ack-eliciting Initial packet. */ + if (!conn->server || type != NGTCP2_PKT_INITIAL || + destlen >= NGTCP2_MAX_UDP_PAYLOAD_SIZE) { + build_pkt: + for (; !ngtcp2_strm_streamfrq_empty(&pktns->crypto.strm);) { + left = ngtcp2_ppe_left(&ppe); + + crypto_offset = ngtcp2_strm_streamfrq_unacked_offset(&pktns->crypto.strm); + if (crypto_offset == (uint64_t)-1) { + ngtcp2_strm_streamfrq_clear(&pktns->crypto.strm); + break; + } + + left = ngtcp2_pkt_crypto_max_datalen(crypto_offset, left, left); + if (left == (size_t)-1) { + break; + } + + rv = ngtcp2_strm_streamfrq_pop(&pktns->crypto.strm, &nfrc, left); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + ngtcp2_frame_chain_list_objalloc_del(frq, &conn->frc_objalloc, + conn->mem); + return rv; + } + + if (nfrc == NULL) { + break; + } + + rv = conn_ppe_write_frame_hd_log(conn, &ppe, &hd_logged, &hd, &nfrc->fr); + if (rv != 0) { + ngtcp2_unreachable(); + } + + *pfrc = nfrc; + pfrc = &(*pfrc)->next; + + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE; + } + + if (!(rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) && + pktns->rtb.num_retransmittable && pktns->rtb.probe_pkt_left) { + num_reclaimed = ngtcp2_rtb_reclaim_on_pto(&pktns->rtb, conn, pktns, 1); + if (num_reclaimed < 0) { + ngtcp2_frame_chain_list_objalloc_del(frq, &conn->frc_objalloc, + conn->mem); + return rv; + } + if (num_reclaimed) { + goto build_pkt; + } + /* We had pktns->rtb.num_retransmittable > 0 but the contents of + those packets have been acknowledged (i.e., retransmission in + another packet). For server, in this case, we don't have to + send any probe packet. Client needs to send probe packets + until it knows that server has completed address validation or + handshake has been confirmed. */ + if (pktns->rtb.num_pto_eliciting == 0 && + (conn->server || + (conn->flags & (NGTCP2_CONN_FLAG_SERVER_ADDR_VERIFIED | + NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED)))) { + pktns->rtb.probe_pkt_left = 0; + ngtcp2_conn_set_loss_detection_timer(conn, ts); + /* TODO If packet is empty, we should return now if cwnd is + zero. */ + } + } + + if (!(rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) && + pktns->rtb.probe_pkt_left) { + lfr.type = NGTCP2_FRAME_PING; + + rv = conn_ppe_write_frame_hd_log(conn, &ppe, &hd_logged, &hd, &lfr); + if (rv != 0) { + assert(rv == NGTCP2_ERR_NOBUF); + } else { + rtb_entry_flags |= + NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | NGTCP2_RTB_ENTRY_FLAG_PROBE; + pkt_empty = 0; + } + } + + if (!pkt_empty) { + if (!(rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING)) { + if (ngtcp2_tstamp_elapsed(pktns->tx.non_ack_pkt_start_ts, + conn->cstat.smoothed_rtt, ts)) { + lfr.type = NGTCP2_FRAME_PING; + + rv = conn_ppe_write_frame_hd_log(conn, &ppe, &hd_logged, &hd, &lfr); + if (rv != 0) { + assert(rv == NGTCP2_ERR_NOBUF); + } else { + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING; + pktns->tx.non_ack_pkt_start_ts = UINT64_MAX; + pkt_empty = 0; + } + } else if (pktns->tx.non_ack_pkt_start_ts == UINT64_MAX) { + pktns->tx.non_ack_pkt_start_ts = ts; + } + } else { + pktns->tx.non_ack_pkt_start_ts = UINT64_MAX; + } + } + } + + if (pkt_empty && !require_padding) { + return 0; + } + + /* If we cannot write another packet, then we need to add padding to + Initial here. */ + if (conn_should_pad_pkt( + conn, type, ngtcp2_ppe_left(&ppe), write_datalen, + (rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) != 0, + require_padding)) { + lfr.type = NGTCP2_FRAME_PADDING; + lfr.padding.len = ngtcp2_ppe_dgram_padding(&ppe); + } else if (pkt_empty) { + return 0; + } else { + lfr.type = NGTCP2_FRAME_PADDING; + lfr.padding.len = ngtcp2_ppe_padding_size(&ppe, conn_min_pktlen(conn)); + min_padded = 1; + } + + if (lfr.padding.len) { + if (!min_padded || + (rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING)) { + padded = 1; + } + ngtcp2_log_tx_fr(&conn->log, &hd, &lfr); + ngtcp2_qlog_write_frame(&conn->qlog, &lfr); + } + + spktlen = ngtcp2_ppe_final(&ppe, NULL); + if (spktlen < 0) { + assert(ngtcp2_err_is_fatal((int)spktlen)); + ngtcp2_frame_chain_list_objalloc_del(frq, &conn->frc_objalloc, conn->mem); + return spktlen; + } + + ngtcp2_qlog_pkt_sent_end(&conn->qlog, &hd, (size_t)spktlen); + + if ((rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) || padded) { + if (pi) { + conn_handle_tx_ecn(conn, pi, &rtb_entry_flags, pktns, &hd, ts); + } + + rv = + ngtcp2_rtb_entry_objalloc_new(&rtbent, &hd, frq, ts, (size_t)spktlen, + rtb_entry_flags, &conn->rtb_entry_objalloc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + ngtcp2_frame_chain_list_objalloc_del(frq, &conn->frc_objalloc, conn->mem); + return rv; + } + + rv = conn_on_pkt_sent(conn, pktns, rtbent); + if (rv != 0) { + ngtcp2_rtb_entry_objalloc_del(rtbent, &conn->rtb_entry_objalloc, + &conn->frc_objalloc, conn->mem); + return rv; + } + + if ((rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) && + (conn->flags & NGTCP2_CONN_FLAG_RESTART_IDLE_TIMER_ON_WRITE)) { + conn_restart_timer_on_write(conn, ts); + } + } else if (pi && conn->tx.ecn.state == NGTCP2_ECN_STATE_CAPABLE) { + conn_handle_tx_ecn(conn, pi, NULL, pktns, &hd, ts); + } + + if (pktns->rtb.probe_pkt_left && + (rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING)) { + --pktns->rtb.probe_pkt_left; + } + + conn_update_keep_alive_last_ts(conn, ts); + + conn->dcid.current.bytes_sent += (uint64_t)spktlen; + + conn->tx.pacing.pktlen += (size_t)spktlen; + + ngtcp2_qlog_metrics_updated(&conn->qlog, &conn->cstat); + + ++pktns->tx.last_pkt_num; + + return spktlen; +} + +/* + * conn_write_ack_pkt writes QUIC packet for type |type| which only + * includes ACK frame in the buffer pointed by |dest| whose length is + * |destlen|. + * + * This function returns the number of bytes written in |dest| if it + * succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static ngtcp2_ssize conn_write_ack_pkt(ngtcp2_conn *conn, ngtcp2_pkt_info *pi, + uint8_t *dest, size_t destlen, + uint8_t type, ngtcp2_tstamp ts) { + int rv; + ngtcp2_frame *ackfr; + ngtcp2_pktns *pktns; + ngtcp2_duration ack_delay; + uint64_t ack_delay_exponent; + ngtcp2_ssize spktlen; + + assert(!(conn->flags & NGTCP2_CONN_FLAG_PPE_PENDING)); + + switch (type) { + case NGTCP2_PKT_INITIAL: + assert(conn->server); + pktns = conn->in_pktns; + ack_delay = 0; + ack_delay_exponent = NGTCP2_DEFAULT_ACK_DELAY_EXPONENT; + break; + case NGTCP2_PKT_HANDSHAKE: + pktns = conn->hs_pktns; + ack_delay = 0; + ack_delay_exponent = NGTCP2_DEFAULT_ACK_DELAY_EXPONENT; + break; + case NGTCP2_PKT_1RTT: + pktns = &conn->pktns; + ack_delay = conn_compute_ack_delay(conn); + ack_delay_exponent = conn->local.transport_params.ack_delay_exponent; + break; + default: + ngtcp2_unreachable(); + } + + if (!pktns->crypto.tx.ckm) { + return 0; + } + + ackfr = NULL; + rv = ngtcp2_conn_create_ack_frame(conn, &ackfr, pktns, type, ts, ack_delay, + ack_delay_exponent); + if (rv != 0) { + return rv; + } + + if (!ackfr) { + return 0; + } + + spktlen = ngtcp2_conn_write_single_frame_pkt( + conn, pi, dest, destlen, type, NGTCP2_WRITE_PKT_FLAG_NONE, + &conn->dcid.current.cid, ackfr, NGTCP2_RTB_ENTRY_FLAG_NONE, NULL, ts); + + if (spktlen <= 0) { + return spktlen; + } + + conn->dcid.current.bytes_sent += (uint64_t)spktlen; + + return spktlen; +} + +static void conn_discard_pktns(ngtcp2_conn *conn, ngtcp2_pktns **ppktns, + ngtcp2_tstamp ts) { + ngtcp2_pktns *pktns = *ppktns; + uint64_t bytes_in_flight; + + bytes_in_flight = pktns->rtb.cc_bytes_in_flight; + + assert(conn->cstat.bytes_in_flight >= bytes_in_flight); + + conn->cstat.bytes_in_flight -= bytes_in_flight; + conn->cstat.pto_count = 0; + conn->cstat.last_tx_pkt_ts[pktns->id] = UINT64_MAX; + conn->cstat.loss_time[pktns->id] = UINT64_MAX; + + conn_call_delete_crypto_aead_ctx(conn, &pktns->crypto.rx.ckm->aead_ctx); + conn_call_delete_crypto_cipher_ctx(conn, &pktns->crypto.rx.hp_ctx); + conn_call_delete_crypto_aead_ctx(conn, &pktns->crypto.tx.ckm->aead_ctx); + conn_call_delete_crypto_cipher_ctx(conn, &pktns->crypto.tx.hp_ctx); + + pktns_del(pktns, conn->mem); + *ppktns = NULL; + + ngtcp2_conn_set_loss_detection_timer(conn, ts); +} + +void ngtcp2_conn_discard_initial_state(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + if (!conn->in_pktns) { + return; + } + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "discarding Initial packet number space"); + + conn_discard_pktns(conn, &conn->in_pktns, ts); + + conn_vneg_crypto_free(conn); + + memset(&conn->vneg.rx, 0, sizeof(conn->vneg.rx)); + memset(&conn->vneg.tx, 0, sizeof(conn->vneg.tx)); +} + +void ngtcp2_conn_discard_handshake_state(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + if (!conn->hs_pktns) { + return; + } + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "discarding Handshake packet number space"); + + conn_discard_pktns(conn, &conn->hs_pktns, ts); +} + +/* + * conn_discard_early_key discards early key. + */ +static void conn_discard_early_key(ngtcp2_conn *conn) { + assert(conn->early.ckm); + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, "discarding early key"); + + conn_call_delete_crypto_aead_ctx(conn, &conn->early.ckm->aead_ctx); + conn_call_delete_crypto_cipher_ctx(conn, &conn->early.hp_ctx); + memset(&conn->early.hp_ctx, 0, sizeof(conn->early.hp_ctx)); + + ngtcp2_crypto_km_del(conn->early.ckm, conn->mem); + conn->early.ckm = NULL; +} + +/* + * conn_write_handshake_ack_pkts writes packets which contain ACK + * frame only. This function writes at most 2 packets for each + * Initial and Handshake packet. + */ +static ngtcp2_ssize conn_write_handshake_ack_pkts(ngtcp2_conn *conn, + ngtcp2_pkt_info *pi, + uint8_t *dest, size_t destlen, + ngtcp2_tstamp ts) { + ngtcp2_ssize res = 0, nwrite = 0; + + /* In the most cases, client sends ACK in conn_write_handshake_pkt. + This function is only called when it is CWND limited or pacing + limited. It is not required for client to send ACK for server + Initial. This is because once it gets server Initial, it gets + Handshake tx key and discards Initial key. The only good reason + to send ACK is give server RTT measurement early. */ + if (conn->server && conn->in_pktns) { + nwrite = + conn_write_ack_pkt(conn, pi, dest, destlen, NGTCP2_PKT_INITIAL, ts); + if (nwrite < 0) { + assert(nwrite != NGTCP2_ERR_NOBUF); + return nwrite; + } + + res += nwrite; + dest += nwrite; + destlen -= (size_t)nwrite; + } + + if (conn->hs_pktns->crypto.tx.ckm) { + nwrite = + conn_write_ack_pkt(conn, pi, dest, destlen, NGTCP2_PKT_HANDSHAKE, ts); + if (nwrite < 0) { + assert(nwrite != NGTCP2_ERR_NOBUF); + return nwrite; + } + + res += nwrite; + + if (!conn->server && nwrite) { + ngtcp2_conn_discard_initial_state(conn, ts); + } + } + + return res; +} + +/* + * conn_write_client_initial writes Initial packet in the buffer + * pointed by |dest| whose length is |destlen|. + * + * This function returns the number of bytes written in |dest| if it + * succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static ngtcp2_ssize conn_write_client_initial(ngtcp2_conn *conn, + ngtcp2_pkt_info *pi, + uint8_t *dest, size_t destlen, + uint64_t early_datalen, + ngtcp2_tstamp ts) { + int rv; + + rv = conn_call_client_initial(conn); + if (rv != 0) { + return rv; + } + + return conn_write_handshake_pkt( + conn, pi, dest, destlen, 0, NGTCP2_PKT_INITIAL, NGTCP2_WRITE_PKT_FLAG_NONE, + early_datalen, ts); +} + +/* + * dcid_tx_left returns the maximum number of bytes that server is + * allowed to send to an unvalidated path associated to |dcid|. + */ +static uint64_t dcid_tx_left(ngtcp2_dcid *dcid) { + if (dcid->flags & NGTCP2_DCID_FLAG_PATH_VALIDATED) { + return SIZE_MAX; + } + /* From QUIC spec: Prior to validating the client address, servers + MUST NOT send more than three times as many bytes as the number + of bytes they have received. */ + assert(dcid->bytes_recv * 3 >= dcid->bytes_sent); + + return dcid->bytes_recv * 3 - dcid->bytes_sent; +} + +/* + * conn_server_tx_left returns the maximum number of bytes that server + * is allowed to send to an unvalidated path. + */ +static uint64_t conn_server_tx_left(ngtcp2_conn *conn, ngtcp2_dcid *dcid) { + assert(conn->server); + + /* If pv->dcid has the current path, use conn->dcid.current. This + is because conn->dcid.current gets update for bytes_recv and + bytes_sent. */ + if (ngtcp2_path_eq(&dcid->ps.path, &conn->dcid.current.ps.path)) { + return dcid_tx_left(&conn->dcid.current); + } + + return dcid_tx_left(dcid); +} + +/* + * conn_write_handshake_pkts writes Initial and Handshake packets in + * the buffer pointed by |dest| whose length is |destlen|. + * + * This function returns the number of bytes written in |dest| if it + * succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static ngtcp2_ssize conn_write_handshake_pkts(ngtcp2_conn *conn, + ngtcp2_pkt_info *pi, + uint8_t *dest, size_t destlen, + uint64_t write_datalen, + ngtcp2_tstamp ts) { + ngtcp2_ssize nwrite; + ngtcp2_ssize res = 0; + ngtcp2_rtb_entry *rtbent; + uint8_t wflags = NGTCP2_WRITE_PKT_FLAG_NONE; + ngtcp2_conn_stat *cstat = &conn->cstat; + ngtcp2_ksl_it it; + + /* As a client, we would like to discard Initial packet number space + when sending the first Handshake packet. When sending Handshake + packet, it should be one of 1) sending ACK, 2) sending PTO probe + packet, or 3) sending CRYPTO. If we have pending acknowledgement + for Initial, then do not discard Initial packet number space. + Otherwise, if either 1) or 2) is satisfied, discard Initial + packet number space. When sending Handshake CRYPTO, it indicates + that client has received Handshake CRYPTO from server. Initial + packet number space is discarded because 1) is met. If there is + pending Initial ACK, Initial packet number space is discarded + after writing the first Handshake packet. + */ + if (!conn->server && conn->hs_pktns->crypto.tx.ckm && conn->in_pktns && + !ngtcp2_acktr_require_active_ack(&conn->in_pktns->acktr, + /* max_ack_delay = */ 0, ts) && + (ngtcp2_acktr_require_active_ack(&conn->hs_pktns->acktr, + /* max_ack_delay = */ 0, ts) || + conn->hs_pktns->rtb.probe_pkt_left)) { + /* Discard Initial state here so that Handshake packet is not + padded. */ + ngtcp2_conn_discard_initial_state(conn, ts); + } else if (conn->in_pktns) { + nwrite = + conn_write_handshake_pkt(conn, pi, dest, destlen, 0, NGTCP2_PKT_INITIAL, + NGTCP2_WRITE_PKT_FLAG_NONE, write_datalen, ts); + if (nwrite < 0) { + assert(nwrite != NGTCP2_ERR_NOBUF); + return nwrite; + } + + if (nwrite == 0) { + if (conn->server && + (conn->in_pktns->rtb.probe_pkt_left || + !ngtcp2_strm_streamfrq_empty(&conn->in_pktns->crypto.strm))) { + if (cstat->loss_detection_timer != UINT64_MAX && + conn_server_tx_left(conn, &conn->dcid.current) < + NGTCP2_MAX_UDP_PAYLOAD_SIZE) { + ngtcp2_log_info( + &conn->log, NGTCP2_LOG_EVENT_LDC, + "loss detection timer canceled due to amplification limit"); + ngtcp2_conn_cancel_loss_detection_timer(conn); + } + + return 0; + } + } else { + res += nwrite; + dest += nwrite; + destlen -= (size_t)nwrite; + + /* If initial packet size is at least + NGTCP2_MAX_UDP_PAYLOAD_SIZE, no extra padding is needed in a + subsequent packet. */ + if (nwrite < NGTCP2_MAX_UDP_PAYLOAD_SIZE) { + if (conn->server) { + it = ngtcp2_rtb_head(&conn->in_pktns->rtb); + if (!ngtcp2_ksl_it_end(&it)) { + rtbent = ngtcp2_ksl_it_get(&it); + if (rtbent->flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) { + wflags |= NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING; + } + } + } else { + wflags |= NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING; + } + } + } + } + + nwrite = + conn_write_handshake_pkt(conn, pi, dest, destlen, (size_t)res, + NGTCP2_PKT_HANDSHAKE, wflags, write_datalen, ts); + if (nwrite < 0) { + assert(nwrite != NGTCP2_ERR_NOBUF); + return nwrite; + } + + res += nwrite; + + if (!conn->server && conn->hs_pktns->crypto.tx.ckm && nwrite) { + /* We don't need to send further Initial packet if we have + Handshake key and sent something with it. So discard initial + state here. */ + ngtcp2_conn_discard_initial_state(conn, ts); + } + + return res; +} + +/* + * conn_initial_stream_rx_offset returns the initial maximum offset of + * data for a stream denoted by |stream_id|. + */ +static uint64_t conn_initial_stream_rx_offset(ngtcp2_conn *conn, + int64_t stream_id) { + int local_stream = conn_local_stream(conn, stream_id); + + if (bidi_stream(stream_id)) { + if (local_stream) { + return conn->local.transport_params.initial_max_stream_data_bidi_local; + } + return conn->local.transport_params.initial_max_stream_data_bidi_remote; + } + + if (local_stream) { + return 0; + } + return conn->local.transport_params.initial_max_stream_data_uni; +} + +/* + * conn_should_send_max_stream_data returns nonzero if MAX_STREAM_DATA + * frame should be send for |strm|. + */ +static int conn_should_send_max_stream_data(ngtcp2_conn *conn, + ngtcp2_strm *strm) { + uint64_t inc = strm->rx.unsent_max_offset - strm->rx.max_offset; + (void)conn; + + return strm->rx.window < 2 * inc; +} + +/* + * conn_should_send_max_data returns nonzero if MAX_DATA frame should + * be sent. + */ +static int conn_should_send_max_data(ngtcp2_conn *conn) { + uint64_t inc = conn->rx.unsent_max_offset - conn->rx.max_offset; + + return conn->rx.window < 2 * inc; +} + +/* + * conn_required_num_new_connection_id returns the number of + * additional connection ID the local endpoint has to provide to the + * remote endpoint. + */ +static size_t conn_required_num_new_connection_id(ngtcp2_conn *conn) { + uint64_t n; + size_t len = ngtcp2_ksl_len(&conn->scid.set); + size_t lim; + + if (len >= NGTCP2_MAX_SCID_POOL_SIZE) { + return 0; + } + + assert(NGTCP2_MAX_SCID_POOL_SIZE >= conn->scid.num_in_flight); + + lim = NGTCP2_MAX_SCID_POOL_SIZE - conn->scid.num_in_flight; + if (lim == 0) { + return 0; + } + + assert(conn->remote.transport_params); + assert(conn->remote.transport_params->active_connection_id_limit); + + /* len includes retired CID. We don't provide extra CID if doing so + exceeds NGTCP2_MAX_SCID_POOL_SIZE. */ + + n = conn->remote.transport_params->active_connection_id_limit + + conn->scid.num_retired; + + n = ngtcp2_min_uint64(NGTCP2_MAX_SCID_POOL_SIZE, n) - len; + + return (size_t)ngtcp2_min_uint64(lim, n); +} + +/* + * conn_enqueue_new_connection_id generates additional connection IDs + * and prepares to send them to the remote endpoint. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static int conn_enqueue_new_connection_id(ngtcp2_conn *conn) { + size_t i, need = conn_required_num_new_connection_id(conn); + size_t cidlen = conn->oscid.datalen; + ngtcp2_cid cid; + uint64_t seq; + int rv; + uint8_t token[NGTCP2_STATELESS_RESET_TOKENLEN]; + ngtcp2_frame_chain *nfrc; + ngtcp2_pktns *pktns = &conn->pktns; + ngtcp2_scid *scid; + ngtcp2_ksl_it it; + + for (i = 0; i < need; ++i) { + rv = conn_call_get_new_connection_id(conn, &cid, token, cidlen); + if (rv != 0) { + return rv; + } + + if (cid.datalen != cidlen) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + /* Assert uniqueness */ + it = ngtcp2_ksl_lower_bound(&conn->scid.set, &cid); + if (!ngtcp2_ksl_it_end(&it) && + ngtcp2_cid_eq(ngtcp2_ksl_it_key(&it), &cid)) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + seq = ++conn->scid.last_seq; + + scid = ngtcp2_mem_malloc(conn->mem, sizeof(*scid)); + if (scid == NULL) { + return NGTCP2_ERR_NOMEM; + } + + ngtcp2_scid_init(scid, seq, &cid); + + rv = ngtcp2_ksl_insert(&conn->scid.set, NULL, &scid->cid, scid); + if (rv != 0) { + ngtcp2_mem_free(conn->mem, scid); + return rv; + } + + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + return rv; + } + + nfrc->fr.type = NGTCP2_FRAME_NEW_CONNECTION_ID; + nfrc->fr.new_connection_id.seq = seq; + nfrc->fr.new_connection_id.retire_prior_to = 0; + nfrc->fr.new_connection_id.cid = cid; + memcpy(nfrc->fr.new_connection_id.stateless_reset_token, token, + sizeof(token)); + nfrc->next = pktns->tx.frq; + pktns->tx.frq = nfrc; + + assert(NGTCP2_MAX_SCID_POOL_SIZE > conn->scid.num_in_flight); + + ++conn->scid.num_in_flight; + } + + return 0; +} + +/* + * conn_remove_retired_connection_id removes the already retired + * connection ID. It waits PTO before actually removing a connection + * ID after it receives RETIRE_CONNECTION_ID from peer to catch + * reordered packets. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static int conn_remove_retired_connection_id(ngtcp2_conn *conn, + ngtcp2_duration pto, + ngtcp2_tstamp ts) { + ngtcp2_duration timeout = pto; + ngtcp2_scid *scid; + ngtcp2_dcid *dcid; + int rv; + + for (; !ngtcp2_pq_empty(&conn->scid.used);) { + scid = ngtcp2_struct_of(ngtcp2_pq_top(&conn->scid.used), ngtcp2_scid, pe); + + if (!ngtcp2_tstamp_elapsed(scid->retired_ts, timeout, ts)) { + break; + } + + assert(scid->flags & NGTCP2_SCID_FLAG_RETIRED); + + rv = conn_call_remove_connection_id(conn, &scid->cid); + if (rv != 0) { + return rv; + } + + ngtcp2_ksl_remove(&conn->scid.set, NULL, &scid->cid); + ngtcp2_pq_pop(&conn->scid.used); + ngtcp2_mem_free(conn->mem, scid); + + assert(conn->scid.num_retired); + --conn->scid.num_retired; + } + + for (; ngtcp2_ringbuf_len(&conn->dcid.retired.rb);) { + dcid = ngtcp2_ringbuf_get(&conn->dcid.retired.rb, 0); + if (dcid->retired_ts + timeout >= ts) { + break; + } + + rv = conn_call_deactivate_dcid(conn, dcid); + if (rv != 0) { + return rv; + } + + ngtcp2_ringbuf_pop_front(&conn->dcid.retired.rb); + } + + return 0; +} + +/* + * conn_min_pktlen returns the minimum length of packet this endpoint + * sends. It may underestimate the length because this does not take + * into account header protection sample. + */ +static size_t conn_min_pktlen(ngtcp2_conn *conn) { + return conn->oscid.datalen + NGTCP2_MIN_PKT_EXPANDLEN; +} + +/* + * conn_handle_unconfirmed_key_update_from_remote deals with key + * update which has not been confirmed yet and initiated by the remote + * endpoint. + * + * If key update was initiated by the remote endpoint, acknowledging a + * packet encrypted with the new key completes key update procedure. + */ +static void conn_handle_unconfirmed_key_update_from_remote(ngtcp2_conn *conn, + int64_t largest_ack, + ngtcp2_tstamp ts) { + if (!(conn->flags & NGTCP2_CONN_FLAG_KEY_UPDATE_NOT_CONFIRMED) || + (conn->flags & NGTCP2_CONN_FLAG_KEY_UPDATE_INITIATOR) || + largest_ack < conn->pktns.crypto.rx.ckm->pkt_num) { + return; + } + + conn->flags &= (uint32_t)~NGTCP2_CONN_FLAG_KEY_UPDATE_NOT_CONFIRMED; + conn->crypto.key_update.confirmed_ts = ts; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CRY, "key update confirmed"); +} + +static uint64_t conn_tx_strmq_first_cycle(ngtcp2_conn *conn); + +/* + * strm_should_send_stream_data_blocked returns nonzero if + * STREAM_DATA_BLOCKED frame should be sent to |strm|. + */ +static int strm_should_send_stream_data_blocked(ngtcp2_strm *strm) { + return strm->tx.offset == strm->tx.max_offset && + strm->tx.last_blocked_offset != strm->tx.max_offset; +} + +/* + * conn_should_send_data_blocked returns nonzero if DATA_BLOCKED frame + * should be sent. + */ +static int conn_should_send_data_blocked(ngtcp2_conn *conn) { + return conn->tx.offset == conn->tx.max_offset && + conn->tx.last_blocked_offset != conn->tx.max_offset; +} + +/* + * conn_reset_ppe_pending clears NGTCP2_CONN_FLAG_PPE_PENDING flag and + * nullifies conn->pkt. + */ +static void conn_reset_ppe_pending(ngtcp2_conn *conn) { + conn->flags &= (uint32_t)~NGTCP2_CONN_FLAG_PPE_PENDING; + + memset(&conn->pkt, 0, sizeof(conn->pkt)); +} + +/* + * conn_write_pkt writes a protected packet in the buffer pointed by + * |dest| whose length if |destlen|. |dgram_offset| is the offset in + * UDP datagram payload where this QUIC packet is positioned at. + * |type| specifies the type of packet. It can be NGTCP2_PKT_1RTT or + * NGTCP2_PKT_0RTT. + * + * This function can send new stream data. In order to send stream + * data, specify the underlying stream and parameters to + * |vmsg|->stream. If |vmsg|->stream.fin is set to nonzero, it + * signals that the given data is the final portion of the stream. + * |vmsg|->stream.data vector of length |vmsg|->stream.datacnt + * specifies stream data to send. The number of bytes sent to the + * stream is assigned to *|vmsg|->stream.pdatalen. If 0 length STREAM + * data is sent, 0 is assigned to it. The caller should initialize + * *|vmsg|->stream.pdatalen to -1. + * + * If |require_padding| is nonzero, padding bytes are added to occupy + * the remaining packet payload. + * + * This function returns the number of bytes written in |dest| if it + * succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + * NGTCP2_ERR_STREAM_DATA_BLOCKED + * Stream data could not be written because of flow control. + */ +static ngtcp2_ssize conn_write_pkt(ngtcp2_conn *conn, ngtcp2_pkt_info *pi, + uint8_t *dest, size_t destlen, + size_t dgram_offset, ngtcp2_vmsg *vmsg, + uint8_t type, uint8_t flags, + ngtcp2_tstamp ts) { + int rv = 0; + ngtcp2_crypto_cc *cc = &conn->pkt.cc; + ngtcp2_ppe *ppe = &conn->pkt.ppe; + ngtcp2_pkt_hd *hd = &conn->pkt.hd; + ngtcp2_frame *ackfr = NULL, lfr; + ngtcp2_ssize nwrite; + ngtcp2_frame_chain **pfrc, *nfrc, *frc; + ngtcp2_rtb_entry *ent; + ngtcp2_strm *strm; + int pkt_empty = 1; + uint64_t ndatalen = 0; + int send_stream = 0; + int stream_blocked = 0; + int send_datagram = 0; + ngtcp2_pktns *pktns = &conn->pktns; + size_t left; + uint64_t datalen = 0; + ngtcp2_vec data[NGTCP2_MAX_STREAM_DATACNT]; + size_t datacnt; + uint16_t rtb_entry_flags = NGTCP2_RTB_ENTRY_FLAG_NONE; + int hd_logged = 0; + ngtcp2_path_challenge_entry *pcent; + uint8_t hd_flags = NGTCP2_PKT_FLAG_NONE; + int require_padding = (flags & NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING) != 0; + int write_more = (flags & NGTCP2_WRITE_PKT_FLAG_MORE) != 0; + int ppe_pending = (conn->flags & NGTCP2_CONN_FLAG_PPE_PENDING) != 0; + size_t min_pktlen = conn_min_pktlen(conn); + int min_padded = 0; + int padded = 0; + ngtcp2_cc_pkt cc_pkt; + uint64_t crypto_offset; + uint64_t stream_offset; + ngtcp2_ssize num_reclaimed; + int fin; + uint64_t target_max_data; + ngtcp2_conn_stat *cstat = &conn->cstat; + uint64_t delta; + const ngtcp2_cid *scid = NULL; + int keep_alive_expired = 0; + uint32_t version = 0; + + /* Return 0 if destlen is less than minimum packet length which can + trigger Stateless Reset */ + if (destlen < min_pktlen) { + return 0; + } + + if (vmsg) { + switch (vmsg->type) { + case NGTCP2_VMSG_TYPE_STREAM: + datalen = ngtcp2_vec_len(vmsg->stream.data, vmsg->stream.datacnt); + ndatalen = conn_enforce_flow_control(conn, vmsg->stream.strm, datalen); + /* 0 length STREAM frame is allowed */ + if (ndatalen || datalen == 0) { + send_stream = 1; + } else { + stream_blocked = 1; + } + break; + case NGTCP2_VMSG_TYPE_DATAGRAM: + datalen = ngtcp2_vec_len(vmsg->datagram.data, vmsg->datagram.datacnt); + send_datagram = 1; + break; + default: + break; + } + } + + if (!ppe_pending) { + switch (type) { + case NGTCP2_PKT_1RTT: + hd_flags = conn_pkt_flags_short(conn); + scid = NULL; + cc->aead = pktns->crypto.ctx.aead; + cc->hp = pktns->crypto.ctx.hp; + cc->ckm = pktns->crypto.tx.ckm; + cc->hp_ctx = pktns->crypto.tx.hp_ctx; + + assert(conn->negotiated_version); + + version = conn->negotiated_version; + + /* transport parameter is only valid after handshake completion + which means we don't know how many connection ID that remote + peer can accept before handshake completion. Because server + can use remote transport parameters sending stream data in + 0.5 RTT, it is also allowed to use remote transport + parameters here. */ + if (conn->oscid.datalen && + (conn->server || conn_is_tls_handshake_completed(conn))) { + rv = conn_enqueue_new_connection_id(conn); + if (rv != 0) { + return rv; + } + } + + break; + case NGTCP2_PKT_0RTT: + assert(!conn->server); + if (!conn->early.ckm) { + return 0; + } + hd_flags = conn_pkt_flags_long(conn); + scid = &conn->oscid; + cc->aead = conn->early.ctx.aead; + cc->hp = conn->early.ctx.hp; + cc->ckm = conn->early.ckm; + cc->hp_ctx = conn->early.hp_ctx; + version = conn->client_chosen_version; + break; + default: + /* Unreachable */ + ngtcp2_unreachable(); + } + + cc->encrypt = conn->callbacks.encrypt; + cc->hp_mask = conn->callbacks.hp_mask; + + if (conn_should_send_max_data(conn)) { + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + return rv; + } + + if (conn->local.settings.max_window && + conn->tx.last_max_data_ts != UINT64_MAX && + ts - conn->tx.last_max_data_ts < + NGTCP2_FLOW_WINDOW_RTT_FACTOR * cstat->smoothed_rtt && + conn->local.settings.max_window > conn->rx.window) { + target_max_data = NGTCP2_FLOW_WINDOW_SCALING_FACTOR * conn->rx.window; + if (target_max_data > conn->local.settings.max_window) { + target_max_data = conn->local.settings.max_window; + } + + delta = target_max_data - conn->rx.window; + if (conn->rx.unsent_max_offset + delta > NGTCP2_MAX_VARINT) { + delta = NGTCP2_MAX_VARINT - conn->rx.unsent_max_offset; + } + + conn->rx.window = target_max_data; + } else { + delta = 0; + } + + conn->tx.last_max_data_ts = ts; + + nfrc->fr.type = NGTCP2_FRAME_MAX_DATA; + nfrc->fr.max_data.max_data = conn->rx.unsent_max_offset + delta; + nfrc->next = pktns->tx.frq; + pktns->tx.frq = nfrc; + + conn->rx.max_offset = conn->rx.unsent_max_offset = + nfrc->fr.max_data.max_data; + } + + if (stream_blocked && conn_should_send_max_data(conn)) { + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + return rv; + } + + nfrc->fr.type = NGTCP2_FRAME_DATA_BLOCKED; + nfrc->fr.data_blocked.offset = conn->tx.max_offset; + nfrc->next = pktns->tx.frq; + pktns->tx.frq = nfrc; + + conn->tx.last_blocked_offset = conn->tx.max_offset; + } + + if (stream_blocked && !ngtcp2_strm_is_tx_queued(vmsg->stream.strm) && + strm_should_send_stream_data_blocked(vmsg->stream.strm)) { + assert(vmsg); + assert(vmsg->type == NGTCP2_VMSG_TYPE_STREAM); + + vmsg->stream.strm->cycle = conn_tx_strmq_first_cycle(conn); + rv = ngtcp2_conn_tx_strmq_push(conn, vmsg->stream.strm); + if (rv != 0) { + return rv; + } + } + + ngtcp2_pkt_hd_init(hd, hd_flags, type, &conn->dcid.current.cid, scid, + pktns->tx.last_pkt_num + 1, + pktns_select_pkt_numlen(pktns), version, 0); + + ngtcp2_ppe_init(ppe, dest, destlen, dgram_offset, cc); + + rv = ngtcp2_ppe_encode_hd(ppe, hd); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + return 0; + } + + if (!ngtcp2_ppe_ensure_hp_sample(ppe)) { + return 0; + } + + if (ngtcp2_ringbuf_len(&conn->rx.path_challenge.rb)) { + pcent = ngtcp2_ringbuf_get(&conn->rx.path_challenge.rb, 0); + + /* PATH_RESPONSE is bound to the path that the corresponding + PATH_CHALLENGE is received. */ + if (ngtcp2_path_eq(&conn->dcid.current.ps.path, &pcent->ps.path)) { + lfr.type = NGTCP2_FRAME_PATH_RESPONSE; + memcpy(lfr.path_response.data, pcent->data, + sizeof(lfr.path_response.data)); + + rv = conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &lfr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + } else { + ngtcp2_ringbuf_pop_front(&conn->rx.path_challenge.rb); + + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING; + require_padding = require_padding || !conn->server || + destlen >= NGTCP2_MAX_UDP_PAYLOAD_SIZE; + /* We don't retransmit PATH_RESPONSE. */ + } + } + } + + rv = ngtcp2_conn_create_ack_frame( + conn, &ackfr, pktns, type, ts, conn_compute_ack_delay(conn), + conn->local.transport_params.ack_delay_exponent); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + + if (ackfr) { + rv = conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, ackfr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + } else { + ngtcp2_acktr_commit_ack(&pktns->acktr); + ngtcp2_acktr_add_ack(&pktns->acktr, hd->pkt_num, + ackfr->ack.largest_ack); + if (type == NGTCP2_PKT_1RTT) { + conn_handle_unconfirmed_key_update_from_remote( + conn, ackfr->ack.largest_ack, ts); + } + pkt_empty = 0; + } + } + + build_pkt: + for (pfrc = &pktns->tx.frq; *pfrc;) { + if ((*pfrc)->binder && + ((*pfrc)->binder->flags & NGTCP2_FRAME_CHAIN_BINDER_FLAG_ACK)) { + frc = *pfrc; + *pfrc = (*pfrc)->next; + ngtcp2_frame_chain_objalloc_del(frc, &conn->frc_objalloc, conn->mem); + continue; + } + + switch ((*pfrc)->fr.type) { + case NGTCP2_FRAME_RESET_STREAM: + strm = + ngtcp2_conn_find_stream(conn, (*pfrc)->fr.reset_stream.stream_id); + if (strm == NULL || + !ngtcp2_strm_require_retransmit_reset_stream(strm)) { + frc = *pfrc; + *pfrc = (*pfrc)->next; + ngtcp2_frame_chain_objalloc_del(frc, &conn->frc_objalloc, conn->mem); + continue; + } + break; + case NGTCP2_FRAME_STOP_SENDING: + strm = + ngtcp2_conn_find_stream(conn, (*pfrc)->fr.stop_sending.stream_id); + if (strm == NULL || + !ngtcp2_strm_require_retransmit_stop_sending(strm)) { + frc = *pfrc; + *pfrc = (*pfrc)->next; + ngtcp2_frame_chain_objalloc_del(frc, &conn->frc_objalloc, conn->mem); + continue; + } + break; + case NGTCP2_FRAME_STREAM: + ngtcp2_unreachable(); + case NGTCP2_FRAME_MAX_STREAMS_BIDI: + if ((*pfrc)->fr.max_streams.max_streams < + conn->remote.bidi.max_streams) { + frc = *pfrc; + *pfrc = (*pfrc)->next; + ngtcp2_frame_chain_objalloc_del(frc, &conn->frc_objalloc, conn->mem); + continue; + } + break; + case NGTCP2_FRAME_MAX_STREAMS_UNI: + if ((*pfrc)->fr.max_streams.max_streams < + conn->remote.uni.max_streams) { + frc = *pfrc; + *pfrc = (*pfrc)->next; + ngtcp2_frame_chain_objalloc_del(frc, &conn->frc_objalloc, conn->mem); + continue; + } + break; + case NGTCP2_FRAME_MAX_STREAM_DATA: + strm = + ngtcp2_conn_find_stream(conn, (*pfrc)->fr.max_stream_data.stream_id); + if (strm == NULL || !ngtcp2_strm_require_retransmit_max_stream_data( + strm, &(*pfrc)->fr.max_stream_data)) { + frc = *pfrc; + *pfrc = (*pfrc)->next; + ngtcp2_frame_chain_objalloc_del(frc, &conn->frc_objalloc, conn->mem); + continue; + } + break; + case NGTCP2_FRAME_MAX_DATA: + if ((*pfrc)->fr.max_data.max_data < conn->rx.max_offset) { + frc = *pfrc; + *pfrc = (*pfrc)->next; + ngtcp2_frame_chain_objalloc_del(frc, &conn->frc_objalloc, conn->mem); + continue; + } + break; + case NGTCP2_FRAME_STREAM_DATA_BLOCKED: + strm = ngtcp2_conn_find_stream( + conn, (*pfrc)->fr.stream_data_blocked.stream_id); + if (strm == NULL || !ngtcp2_strm_require_retransmit_stream_data_blocked( + strm, &(*pfrc)->fr.stream_data_blocked)) { + frc = *pfrc; + *pfrc = (*pfrc)->next; + ngtcp2_frame_chain_objalloc_del(frc, &conn->frc_objalloc, conn->mem); + continue; + } + break; + case NGTCP2_FRAME_DATA_BLOCKED: + if ((*pfrc)->fr.data_blocked.offset != conn->tx.max_offset) { + frc = *pfrc; + *pfrc = (*pfrc)->next; + ngtcp2_frame_chain_objalloc_del(frc, &conn->frc_objalloc, conn->mem); + continue; + } + break; + case NGTCP2_FRAME_CRYPTO: + ngtcp2_unreachable(); + } + + rv = conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &(*pfrc)->fr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + break; + } + + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE; + pfrc = &(*pfrc)->next; + } + + if (*pfrc == NULL) { + for (; !ngtcp2_strm_streamfrq_empty(&pktns->crypto.strm);) { + left = ngtcp2_ppe_left(ppe); + + crypto_offset = + ngtcp2_strm_streamfrq_unacked_offset(&pktns->crypto.strm); + if (crypto_offset == (uint64_t)-1) { + ngtcp2_strm_streamfrq_clear(&pktns->crypto.strm); + break; + } + + left = ngtcp2_pkt_crypto_max_datalen(crypto_offset, left, left); + + if (left == (size_t)-1) { + break; + } + + rv = ngtcp2_strm_streamfrq_pop(&pktns->crypto.strm, &nfrc, left); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + + if (nfrc == NULL) { + break; + } + + rv = conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &nfrc->fr); + if (rv != 0) { + ngtcp2_unreachable(); + } + + *pfrc = nfrc; + pfrc = &(*pfrc)->next; + + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE; + } + } + + if (*pfrc == NULL) { + for (; !ngtcp2_pq_empty(&conn->tx.strmq);) { + strm = ngtcp2_conn_tx_strmq_top(conn); + + if (strm->flags & NGTCP2_STRM_FLAG_SEND_RESET_STREAM) { + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + return rv; + } + + nfrc->fr.type = NGTCP2_FRAME_RESET_STREAM; + nfrc->fr.reset_stream.stream_id = strm->stream_id; + nfrc->fr.reset_stream.app_error_code = + strm->tx.reset_stream_app_error_code; + nfrc->fr.reset_stream.final_size = strm->tx.offset; + *pfrc = nfrc; + + strm->flags &= ~NGTCP2_STRM_FLAG_SEND_RESET_STREAM; + + rv = + conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &nfrc->fr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + + break; + } + + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE; + pfrc = &(*pfrc)->next; + } + + if (strm->flags & NGTCP2_STRM_FLAG_SEND_STOP_SENDING) { + if ((strm->flags & NGTCP2_STRM_FLAG_SHUT_RD) && + ngtcp2_strm_rx_offset(strm) == strm->rx.last_offset) { + strm->flags &= ~NGTCP2_STRM_FLAG_SEND_STOP_SENDING; + } else { + rv = conn_call_stream_stop_sending( + conn, strm->stream_id, strm->tx.stop_sending_app_error_code, + strm->stream_user_data); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + + return rv; + } + + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + return rv; + } + + nfrc->fr.type = NGTCP2_FRAME_STOP_SENDING; + nfrc->fr.stop_sending.stream_id = strm->stream_id; + nfrc->fr.stop_sending.app_error_code = + strm->tx.stop_sending_app_error_code; + *pfrc = nfrc; + + strm->flags &= ~NGTCP2_STRM_FLAG_SEND_STOP_SENDING; + + rv = + conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &nfrc->fr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + + break; + } + + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE; + pfrc = &(*pfrc)->next; + } + } + + if (!(strm->flags & NGTCP2_STRM_FLAG_SHUT_WR) && + strm_should_send_stream_data_blocked(strm)) { + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + return rv; + } + + nfrc->fr.type = NGTCP2_FRAME_STREAM_DATA_BLOCKED; + nfrc->fr.stream_data_blocked.stream_id = strm->stream_id; + nfrc->fr.stream_data_blocked.offset = strm->tx.max_offset; + *pfrc = nfrc; + + strm->tx.last_blocked_offset = strm->tx.max_offset; + + rv = + conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &nfrc->fr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + + break; + } + + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE; + pfrc = &(*pfrc)->next; + } + + if (!(strm->flags & + (NGTCP2_STRM_FLAG_SHUT_RD | NGTCP2_STRM_FLAG_STOP_SENDING)) && + conn_should_send_max_stream_data(conn, strm)) { + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + + if (conn->local.settings.max_stream_window && + strm->tx.last_max_stream_data_ts != UINT64_MAX && + ts - strm->tx.last_max_stream_data_ts < + NGTCP2_FLOW_WINDOW_RTT_FACTOR * cstat->smoothed_rtt && + conn->local.settings.max_stream_window > strm->rx.window) { + target_max_data = + NGTCP2_FLOW_WINDOW_SCALING_FACTOR * strm->rx.window; + if (target_max_data > conn->local.settings.max_stream_window) { + target_max_data = conn->local.settings.max_stream_window; + } + + delta = target_max_data - strm->rx.window; + if (strm->rx.unsent_max_offset + delta > NGTCP2_MAX_VARINT) { + delta = NGTCP2_MAX_VARINT - strm->rx.unsent_max_offset; + } + + strm->rx.window = target_max_data; + } else { + delta = 0; + } + + strm->tx.last_max_stream_data_ts = ts; + + nfrc->fr.type = NGTCP2_FRAME_MAX_STREAM_DATA; + nfrc->fr.max_stream_data.stream_id = strm->stream_id; + nfrc->fr.max_stream_data.max_stream_data = + strm->rx.unsent_max_offset + delta; + *pfrc = nfrc; + + strm->rx.max_offset = strm->rx.unsent_max_offset = + nfrc->fr.max_stream_data.max_stream_data; + + rv = + conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &nfrc->fr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + break; + } + + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE; + pfrc = &(*pfrc)->next; + } + + if (ngtcp2_strm_streamfrq_empty(strm)) { + ngtcp2_conn_tx_strmq_pop(conn); + continue; + } + + stream_offset = ngtcp2_strm_streamfrq_unacked_offset(strm); + if (stream_offset == (uint64_t)-1) { + ngtcp2_strm_streamfrq_clear(strm); + ngtcp2_conn_tx_strmq_pop(conn); + continue; + } + + left = ngtcp2_ppe_left(ppe); + + left = ngtcp2_pkt_stream_max_datalen(strm->stream_id, stream_offset, + left, left); + + if (left == (size_t)-1) { + break; + } + + rv = ngtcp2_strm_streamfrq_pop(strm, &nfrc, left); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + + if (nfrc == NULL) { + /* TODO Why? */ + break; + } + + rv = conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &nfrc->fr); + if (rv != 0) { + ngtcp2_unreachable(); + } + + *pfrc = nfrc; + pfrc = &(*pfrc)->next; + + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE; + + if (ngtcp2_strm_streamfrq_empty(strm)) { + ngtcp2_conn_tx_strmq_pop(conn); + continue; + } + + ngtcp2_conn_tx_strmq_pop(conn); + ++strm->cycle; + rv = ngtcp2_conn_tx_strmq_push(conn, strm); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + } + } + + /* Write MAX_STREAMS after RESET_STREAM so that we can extend + stream ID space in one packet. */ + if (*pfrc == NULL && + conn->remote.bidi.unsent_max_streams > conn->remote.bidi.max_streams) { + rv = conn_call_extend_max_remote_streams_bidi( + conn, conn->remote.bidi.unsent_max_streams); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + nfrc->fr.type = NGTCP2_FRAME_MAX_STREAMS_BIDI; + nfrc->fr.max_streams.max_streams = conn->remote.bidi.unsent_max_streams; + *pfrc = nfrc; + + conn->remote.bidi.max_streams = conn->remote.bidi.unsent_max_streams; + + rv = conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &(*pfrc)->fr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + } else { + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE; + pfrc = &(*pfrc)->next; + } + } + + if (*pfrc == NULL && + conn->remote.uni.unsent_max_streams > conn->remote.uni.max_streams) { + rv = conn_call_extend_max_remote_streams_uni( + conn, conn->remote.uni.unsent_max_streams); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + nfrc->fr.type = NGTCP2_FRAME_MAX_STREAMS_UNI; + nfrc->fr.max_streams.max_streams = conn->remote.uni.unsent_max_streams; + *pfrc = nfrc; + + conn->remote.uni.max_streams = conn->remote.uni.unsent_max_streams; + + rv = conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &(*pfrc)->fr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + } else { + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE; + pfrc = &(*pfrc)->next; + } + } + + if (pktns->tx.frq == NULL && !send_stream && !send_datagram && + !(rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) && + pktns->rtb.num_retransmittable && pktns->rtb.probe_pkt_left) { + num_reclaimed = ngtcp2_rtb_reclaim_on_pto(&pktns->rtb, conn, pktns, 1); + if (num_reclaimed < 0) { + return rv; + } + if (num_reclaimed) { + goto build_pkt; + } + + /* We had pktns->rtb.num_retransmittable > 0 but we were unable + to reclaim any frame. In this case, we do not have to send + any probe packet. */ + if (pktns->rtb.num_pto_eliciting == 0) { + pktns->rtb.probe_pkt_left = 0; + ngtcp2_conn_set_loss_detection_timer(conn, ts); + + if (pkt_empty && conn_cwnd_is_zero(conn) && !require_padding) { + return 0; + } + } + } + } else { + pfrc = conn->pkt.pfrc; + rtb_entry_flags |= conn->pkt.rtb_entry_flags; + pkt_empty = conn->pkt.pkt_empty; + hd_logged = conn->pkt.hd_logged; + } + + left = ngtcp2_ppe_left(ppe); + + if (*pfrc == NULL && send_stream && + (ndatalen = ngtcp2_pkt_stream_max_datalen( + vmsg->stream.strm->stream_id, vmsg->stream.strm->tx.offset, ndatalen, + left)) != (size_t)-1 && + (ndatalen || datalen == 0)) { + datacnt = ngtcp2_vec_copy_at_most(data, NGTCP2_MAX_STREAM_DATACNT, + vmsg->stream.data, vmsg->stream.datacnt, + (size_t)ndatalen); + ndatalen = ngtcp2_vec_len(data, datacnt); + + assert((datacnt == 0 && datalen == 0) || (datacnt && datalen)); + + rv = ngtcp2_frame_chain_stream_datacnt_objalloc_new( + &nfrc, datacnt, &conn->frc_objalloc, conn->mem); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + + nfrc->fr.stream.type = NGTCP2_FRAME_STREAM; + nfrc->fr.stream.flags = 0; + nfrc->fr.stream.stream_id = vmsg->stream.strm->stream_id; + nfrc->fr.stream.offset = vmsg->stream.strm->tx.offset; + nfrc->fr.stream.datacnt = datacnt; + ngtcp2_vec_copy(nfrc->fr.stream.data, data, datacnt); + + fin = (vmsg->stream.flags & NGTCP2_WRITE_STREAM_FLAG_FIN) && + ndatalen == datalen; + nfrc->fr.stream.fin = (uint8_t)fin; + + rv = conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &nfrc->fr); + if (rv != 0) { + ngtcp2_unreachable(); + } + + *pfrc = nfrc; + pfrc = &(*pfrc)->next; + + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE; + + vmsg->stream.strm->tx.offset += ndatalen; + conn->tx.offset += ndatalen; + vmsg->stream.strm->flags |= NGTCP2_STRM_FLAG_ANY_SENT; + + if (fin) { + ngtcp2_strm_shutdown(vmsg->stream.strm, NGTCP2_STRM_FLAG_SHUT_WR); + } + + if (vmsg->stream.pdatalen) { + *vmsg->stream.pdatalen = (ngtcp2_ssize)ndatalen; + } + } else { + send_stream = 0; + } + + if (vmsg && vmsg->type == NGTCP2_VMSG_TYPE_STREAM && + ((stream_blocked && *pfrc == NULL) || + (send_stream && + !(vmsg->stream.strm->flags & NGTCP2_STRM_FLAG_SHUT_WR)))) { + if (conn_should_send_data_blocked(conn)) { + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + + return rv; + } + + nfrc->fr.type = NGTCP2_FRAME_DATA_BLOCKED; + nfrc->fr.data_blocked.offset = conn->tx.offset; + + rv = conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &nfrc->fr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + + /* We cannot add nfrc to pktns->tx.frq here. */ + ngtcp2_frame_chain_objalloc_del(nfrc, &conn->frc_objalloc, conn->mem); + } else { + *pfrc = nfrc; + pfrc = &(*pfrc)->next; + + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE; + + conn->tx.last_blocked_offset = conn->tx.max_offset; + } + } + + strm = vmsg->stream.strm; + + if (strm_should_send_stream_data_blocked(strm)) { + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + + return rv; + } + + nfrc->fr.type = NGTCP2_FRAME_STREAM_DATA_BLOCKED; + nfrc->fr.stream_data_blocked.stream_id = strm->stream_id; + nfrc->fr.stream_data_blocked.offset = strm->tx.max_offset; + + rv = conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &nfrc->fr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + + /* We cannot add nfrc to pktns->tx.frq here. */ + ngtcp2_frame_chain_objalloc_del(nfrc, &conn->frc_objalloc, conn->mem); + + if (!ngtcp2_strm_is_tx_queued(strm)) { + strm->cycle = conn_tx_strmq_first_cycle(conn); + rv = ngtcp2_conn_tx_strmq_push(conn, strm); + if (rv != 0) { + return rv; + } + } + } else { + *pfrc = nfrc; + pfrc = &(*pfrc)->next; + + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE; + + strm->tx.last_blocked_offset = strm->tx.max_offset; + } + } + } + + if (*pfrc == NULL && send_datagram && + left >= ngtcp2_pkt_datagram_framelen((size_t)datalen)) { + if (conn->callbacks.ack_datagram || conn->callbacks.lost_datagram) { + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + + nfrc->fr.datagram.type = NGTCP2_FRAME_DATAGRAM_LEN; + nfrc->fr.datagram.dgram_id = vmsg->datagram.dgram_id; + nfrc->fr.datagram.datacnt = vmsg->datagram.datacnt; + nfrc->fr.datagram.data = (ngtcp2_vec *)vmsg->datagram.data; + + rv = conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &nfrc->fr); + assert(rv == 0); + + /* Because DATAGRAM will not be retransmitted, we do not use + data anymore. Just nullify it. The only reason to keep + track a frame is keep dgram_id to pass it to + ngtcp2_ack_datagram or ngtcp2_lost_datagram callbacks. */ + nfrc->fr.datagram.datacnt = 0; + nfrc->fr.datagram.data = NULL; + + *pfrc = nfrc; + pfrc = &(*pfrc)->next; + } else { + lfr.datagram.type = NGTCP2_FRAME_DATAGRAM_LEN; + lfr.datagram.datacnt = vmsg->datagram.datacnt; + lfr.datagram.data = (ngtcp2_vec *)vmsg->datagram.data; + + rv = conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &lfr); + assert(rv == 0); + } + + pkt_empty = 0; + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_DATAGRAM; + + if (vmsg->datagram.paccepted) { + *vmsg->datagram.paccepted = 1; + } + } else { + send_datagram = 0; + } + + if (pkt_empty) { + if (*pfrc == NULL && rv == 0 && stream_blocked && + (write_more || !require_padding) && + ngtcp2_conn_get_max_data_left(conn)) { + if (write_more) { + conn->pkt.pfrc = pfrc; + conn->pkt.pkt_empty = pkt_empty; + conn->pkt.rtb_entry_flags = rtb_entry_flags; + conn->pkt.hd_logged = hd_logged; + conn->flags |= NGTCP2_CONN_FLAG_PPE_PENDING; + } + + return NGTCP2_ERR_STREAM_DATA_BLOCKED; + } + + keep_alive_expired = + type == NGTCP2_PKT_1RTT && conn_keep_alive_expired(conn, ts); + + if (conn->pktns.rtb.probe_pkt_left == 0 && !keep_alive_expired && + !require_padding) { + conn_reset_ppe_pending(conn); + + return 0; + } + } else if (write_more) { + conn->pkt.pfrc = pfrc; + conn->pkt.pkt_empty = pkt_empty; + conn->pkt.rtb_entry_flags = rtb_entry_flags; + conn->pkt.hd_logged = hd_logged; + conn->flags |= NGTCP2_CONN_FLAG_PPE_PENDING; + + assert(vmsg); + + switch (vmsg->type) { + case NGTCP2_VMSG_TYPE_STREAM: + if (send_stream) { + if (ngtcp2_ppe_left(ppe)) { + return NGTCP2_ERR_WRITE_MORE; + } + break; + } + + if (*pfrc == NULL && ngtcp2_conn_get_max_data_left(conn) && + stream_blocked) { + return NGTCP2_ERR_STREAM_DATA_BLOCKED; + } + break; + case NGTCP2_VMSG_TYPE_DATAGRAM: + if (send_datagram && ngtcp2_ppe_left(ppe)) { + return NGTCP2_ERR_WRITE_MORE; + } + /* If DATAGRAM cannot be written due to insufficient space, + continue to create a packet with the hope that application + calls ngtcp2_conn_writev_datagram again. */ + break; + default: + ngtcp2_unreachable(); + } + } + + if (!(rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING)) { + if (ngtcp2_tstamp_elapsed(pktns->tx.non_ack_pkt_start_ts, + cstat->smoothed_rtt, ts) || + keep_alive_expired || conn->pktns.rtb.probe_pkt_left) { + lfr.type = NGTCP2_FRAME_PING; + + rv = conn_ppe_write_frame_hd_log(conn, ppe, &hd_logged, hd, &lfr); + if (rv != 0) { + assert(rv == NGTCP2_ERR_NOBUF); + /* TODO If buffer is too small, PING cannot be written if + packet is still empty. */ + } else { + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING; + if (conn->pktns.rtb.probe_pkt_left) { + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_PROBE; + } else { + rtb_entry_flags |= NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING; + } + pktns->tx.non_ack_pkt_start_ts = UINT64_MAX; + pkt_empty = 0; + } + } else if (pktns->tx.non_ack_pkt_start_ts == UINT64_MAX) { + pktns->tx.non_ack_pkt_start_ts = ts; + } + } else { + pktns->tx.non_ack_pkt_start_ts = UINT64_MAX; + } + + /* TODO Push STREAM frame back to ngtcp2_strm if there is an error + before ngtcp2_rtb_entry is safely created and added. */ + if (require_padding) { + lfr.padding.len = ngtcp2_ppe_dgram_padding(ppe); + } else { + lfr.padding.len = ngtcp2_ppe_padding_size(ppe, min_pktlen); + min_padded = 1; + } + + if (lfr.padding.len) { + if (!min_padded || + (rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING)) { + padded = 1; + } + lfr.type = NGTCP2_FRAME_PADDING; + ngtcp2_log_tx_fr(&conn->log, hd, &lfr); + ngtcp2_qlog_write_frame(&conn->qlog, &lfr); + } + + nwrite = ngtcp2_ppe_final(ppe, NULL); + if (nwrite < 0) { + assert(ngtcp2_err_is_fatal((int)nwrite)); + return nwrite; + } + + ++cc->ckm->use_count; + + ngtcp2_qlog_pkt_sent_end(&conn->qlog, hd, (size_t)nwrite); + + /* TODO ack-eliciting vs needs-tracking */ + /* probe packet needs tracking but it does not need ACK, could be lost. */ + if ((rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) || padded) { + if (pi) { + conn_handle_tx_ecn(conn, pi, &rtb_entry_flags, pktns, hd, ts); + } + + rv = + ngtcp2_rtb_entry_objalloc_new(&ent, hd, NULL, ts, (size_t)nwrite, + rtb_entry_flags, &conn->rtb_entry_objalloc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal((int)nwrite)); + return rv; + } + + if (*pfrc != pktns->tx.frq) { + ent->frc = pktns->tx.frq; + pktns->tx.frq = *pfrc; + *pfrc = NULL; + } + + if ((rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) && + pktns->rtb.num_ack_eliciting == 0 && conn->cc.event) { + conn->cc.event(&conn->cc, &conn->cstat, NGTCP2_CC_EVENT_TYPE_TX_START, + ts); + } + + rv = conn_on_pkt_sent(conn, pktns, ent); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + ngtcp2_rtb_entry_objalloc_del(ent, &conn->rtb_entry_objalloc, + &conn->frc_objalloc, conn->mem); + return rv; + } + + if (rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) { + if (conn->cc.on_pkt_sent) { + conn->cc.on_pkt_sent( + &conn->cc, &conn->cstat, + ngtcp2_cc_pkt_init(&cc_pkt, hd->pkt_num, (size_t)nwrite, + NGTCP2_PKTNS_ID_APPLICATION, ts, ent->rst.lost, + ent->rst.tx_in_flight, ent->rst.is_app_limited)); + } + + if (conn->flags & NGTCP2_CONN_FLAG_RESTART_IDLE_TIMER_ON_WRITE) { + conn_restart_timer_on_write(conn, ts); + } + } + } else if (pi && conn->tx.ecn.state == NGTCP2_ECN_STATE_CAPABLE) { + conn_handle_tx_ecn(conn, pi, NULL, pktns, hd, ts); + } + + conn_reset_ppe_pending(conn); + + if (pktns->rtb.probe_pkt_left && + (rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING)) { + --pktns->rtb.probe_pkt_left; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, "probe pkt size=%td", + nwrite); + } + + conn_update_keep_alive_last_ts(conn, ts); + + conn->dcid.current.bytes_sent += (uint64_t)nwrite; + + conn->tx.pacing.pktlen += (size_t)nwrite; + + ngtcp2_qlog_metrics_updated(&conn->qlog, &conn->cstat); + + ++pktns->tx.last_pkt_num; + + return nwrite; +} + +ngtcp2_ssize ngtcp2_conn_write_single_frame_pkt( + ngtcp2_conn *conn, ngtcp2_pkt_info *pi, uint8_t *dest, size_t destlen, + uint8_t type, uint8_t flags, const ngtcp2_cid *dcid, ngtcp2_frame *fr, + uint16_t rtb_entry_flags, const ngtcp2_path *path, ngtcp2_tstamp ts) { + int rv; + ngtcp2_ppe ppe; + ngtcp2_pkt_hd hd; + ngtcp2_frame lfr; + ngtcp2_ssize nwrite; + ngtcp2_crypto_cc cc; + ngtcp2_pktns *pktns; + uint8_t hd_flags; + ngtcp2_rtb_entry *rtbent; + int padded = 0; + const ngtcp2_cid *scid; + uint32_t version; + + switch (type) { + case NGTCP2_PKT_INITIAL: + pktns = conn->in_pktns; + hd_flags = conn_pkt_flags_long(conn); + scid = &conn->oscid; + version = conn->negotiated_version ? conn->negotiated_version + : conn->client_chosen_version; + if (version == conn->client_chosen_version) { + cc.ckm = pktns->crypto.tx.ckm; + cc.hp_ctx = pktns->crypto.tx.hp_ctx; + } else { + assert(version == conn->vneg.version); + + cc.ckm = conn->vneg.tx.ckm; + cc.hp_ctx = conn->vneg.tx.hp_ctx; + } + break; + case NGTCP2_PKT_HANDSHAKE: + pktns = conn->hs_pktns; + hd_flags = conn_pkt_flags_long(conn); + scid = &conn->oscid; + version = conn->negotiated_version; + cc.ckm = pktns->crypto.tx.ckm; + cc.hp_ctx = pktns->crypto.tx.hp_ctx; + break; + case NGTCP2_PKT_1RTT: + pktns = &conn->pktns; + hd_flags = conn_pkt_flags_short(conn); + scid = NULL; + version = conn->negotiated_version; + cc.ckm = pktns->crypto.tx.ckm; + cc.hp_ctx = pktns->crypto.tx.hp_ctx; + break; + default: + /* We don't support 0-RTT packet in this function. */ + ngtcp2_unreachable(); + } + + cc.aead = pktns->crypto.ctx.aead; + cc.hp = pktns->crypto.ctx.hp; + cc.encrypt = conn->callbacks.encrypt; + cc.hp_mask = conn->callbacks.hp_mask; + + ngtcp2_pkt_hd_init(&hd, hd_flags, type, dcid, scid, + pktns->tx.last_pkt_num + 1, pktns_select_pkt_numlen(pktns), + version, 0); + + ngtcp2_ppe_init(&ppe, dest, destlen, 0, &cc); + + rv = ngtcp2_ppe_encode_hd(&ppe, &hd); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + return 0; + } + + if (!ngtcp2_ppe_ensure_hp_sample(&ppe)) { + return 0; + } + + ngtcp2_log_tx_pkt_hd(&conn->log, &hd); + ngtcp2_qlog_pkt_sent_start(&conn->qlog); + + rv = conn_ppe_write_frame(conn, &ppe, &hd, fr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + return 0; + } + + lfr.type = NGTCP2_FRAME_PADDING; + if (flags & NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING_FULL) { + lfr.padding.len = ngtcp2_ppe_dgram_padding_size(&ppe, destlen); + } else if (flags & NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING) { + lfr.padding.len = ngtcp2_ppe_dgram_padding(&ppe); + } else { + switch (fr->type) { + case NGTCP2_FRAME_PATH_CHALLENGE: + case NGTCP2_FRAME_PATH_RESPONSE: + if (!conn->server || destlen >= NGTCP2_MAX_UDP_PAYLOAD_SIZE) { + lfr.padding.len = ngtcp2_ppe_dgram_padding(&ppe); + } else { + lfr.padding.len = 0; + } + break; + default: + lfr.padding.len = ngtcp2_ppe_padding_size(&ppe, conn_min_pktlen(conn)); + } + } + if (lfr.padding.len) { + padded = 1; + ngtcp2_log_tx_fr(&conn->log, &hd, &lfr); + ngtcp2_qlog_write_frame(&conn->qlog, &lfr); + } + + nwrite = ngtcp2_ppe_final(&ppe, NULL); + if (nwrite < 0) { + return nwrite; + } + + if (type == NGTCP2_PKT_1RTT) { + ++cc.ckm->use_count; + } + + ngtcp2_qlog_pkt_sent_end(&conn->qlog, &hd, (size_t)nwrite); + + /* Do this when we are sure that there is no error. */ + switch (fr->type) { + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + ngtcp2_acktr_commit_ack(&pktns->acktr); + ngtcp2_acktr_add_ack(&pktns->acktr, hd.pkt_num, fr->ack.largest_ack); + if (type == NGTCP2_PKT_1RTT) { + conn_handle_unconfirmed_key_update_from_remote(conn, fr->ack.largest_ack, + ts); + } + + if (!(flags & (NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING_FULL | + NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING))) { + padded = 0; + } + + break; + } + + if (((rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) || padded) && + (!path || ngtcp2_path_eq(&conn->dcid.current.ps.path, path))) { + if (pi && (conn->tx.ecn.state == NGTCP2_ECN_STATE_CAPABLE || + !(rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_PMTUD_PROBE))) { + conn_handle_tx_ecn(conn, pi, &rtb_entry_flags, pktns, &hd, ts); + } + + rv = + ngtcp2_rtb_entry_objalloc_new(&rtbent, &hd, NULL, ts, (size_t)nwrite, + rtb_entry_flags, &conn->rtb_entry_objalloc); + if (rv != 0) { + return rv; + } + + rv = conn_on_pkt_sent(conn, pktns, rtbent); + if (rv != 0) { + ngtcp2_rtb_entry_objalloc_del(rtbent, &conn->rtb_entry_objalloc, + &conn->frc_objalloc, conn->mem); + return rv; + } + + if (rtb_entry_flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) { + if (conn->flags & NGTCP2_CONN_FLAG_RESTART_IDLE_TIMER_ON_WRITE) { + conn_restart_timer_on_write(conn, ts); + } + + if (pktns->rtb.probe_pkt_left && path && + ngtcp2_path_eq(&conn->dcid.current.ps.path, path)) { + --pktns->rtb.probe_pkt_left; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, "probe pkt size=%td", + nwrite); + } + } + } else if (pi && conn->tx.ecn.state == NGTCP2_ECN_STATE_CAPABLE) { + conn_handle_tx_ecn(conn, pi, NULL, pktns, &hd, ts); + } + + if (path && ngtcp2_path_eq(&conn->dcid.current.ps.path, path)) { + conn_update_keep_alive_last_ts(conn, ts); + } + + if (!padded) { + switch (fr->type) { + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + break; + default: + conn->tx.pacing.pktlen += (size_t)nwrite; + } + } else { + conn->tx.pacing.pktlen += (size_t)nwrite; + } + + ngtcp2_qlog_metrics_updated(&conn->qlog, &conn->cstat); + + ++pktns->tx.last_pkt_num; + + return nwrite; +} + +/* + * conn_process_early_rtb makes any pending 0RTT packet 1RTT packet. + */ +static void conn_process_early_rtb(ngtcp2_conn *conn) { + ngtcp2_rtb_entry *ent; + ngtcp2_rtb *rtb = &conn->pktns.rtb; + ngtcp2_ksl_it it; + + for (it = ngtcp2_rtb_head(rtb); !ngtcp2_ksl_it_end(&it); + ngtcp2_ksl_it_next(&it)) { + ent = ngtcp2_ksl_it_get(&it); + + if ((ent->hd.flags & NGTCP2_PKT_FLAG_LONG_FORM) == 0 || + ent->hd.type != NGTCP2_PKT_0RTT) { + continue; + } + + /* 0-RTT packet is retransmitted as a 1RTT packet. */ + ent->hd.flags &= (uint8_t)~NGTCP2_PKT_FLAG_LONG_FORM; + ent->hd.type = NGTCP2_PKT_1RTT; + } +} + +/* + * conn_handshake_remnants_left returns nonzero if there may be + * handshake packets the local endpoint has to send, including new + * packets and lost ones. + */ +static int conn_handshake_remnants_left(ngtcp2_conn *conn) { + ngtcp2_pktns *in_pktns = conn->in_pktns; + ngtcp2_pktns *hs_pktns = conn->hs_pktns; + + return !conn_is_tls_handshake_completed(conn) || + (in_pktns && (in_pktns->rtb.num_pto_eliciting || + !ngtcp2_strm_streamfrq_empty(&in_pktns->crypto.strm))) || + (hs_pktns && (hs_pktns->rtb.num_pto_eliciting || + !ngtcp2_strm_streamfrq_empty(&hs_pktns->crypto.strm))); +} + +/* + * conn_retire_dcid_seq retires destination connection ID denoted by + * |seq|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CONNECTION_ID_LIMIT + * The number of unacknowledged retirement exceeds the limit. + */ +static int conn_retire_dcid_seq(ngtcp2_conn *conn, uint64_t seq) { + ngtcp2_pktns *pktns = &conn->pktns; + ngtcp2_frame_chain *nfrc; + int rv; + + if (ngtcp2_conn_check_retired_dcid_tracked(conn, seq)) { + return 0; + } + + rv = ngtcp2_conn_track_retired_dcid_seq(conn, seq); + if (rv != 0) { + return rv; + } + + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + return rv; + } + + nfrc->fr.type = NGTCP2_FRAME_RETIRE_CONNECTION_ID; + nfrc->fr.retire_connection_id.seq = seq; + nfrc->next = pktns->tx.frq; + pktns->tx.frq = nfrc; + + return 0; +} + +/* + * conn_retire_dcid retires |dcid|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + */ +static int conn_retire_dcid(ngtcp2_conn *conn, const ngtcp2_dcid *dcid, + ngtcp2_tstamp ts) { + ngtcp2_ringbuf *rb = &conn->dcid.retired.rb; + ngtcp2_dcid *dest, *stale_dcid; + int rv; + + assert(dcid->cid.datalen); + + if (ngtcp2_ringbuf_full(rb)) { + stale_dcid = ngtcp2_ringbuf_get(rb, 0); + rv = conn_call_deactivate_dcid(conn, stale_dcid); + if (rv != 0) { + return rv; + } + + ngtcp2_ringbuf_pop_front(rb); + } + + dest = ngtcp2_ringbuf_push_back(rb); + ngtcp2_dcid_copy(dest, dcid); + dest->retired_ts = ts; + + return conn_retire_dcid_seq(conn, dcid->seq); +} + +/* + * conn_bind_dcid stores the DCID to |*pdcid| bound to |path|. If + * such DCID is not found, bind the new DCID to |path| and stores it + * to |*pdcid|. If a remote endpoint uses zero-length connection ID, + * the pointer to conn->dcid.current is assigned to |*pdcid|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_CONN_ID_BLOCKED + * No unused DCID is available + * NGTCP2_ERR_NOMEM + * Out of memory + */ +static int conn_bind_dcid(ngtcp2_conn *conn, ngtcp2_dcid **pdcid, + const ngtcp2_path *path, ngtcp2_tstamp ts) { + ngtcp2_dcid *dcid, *ndcid; + ngtcp2_cid cid; + size_t i, len; + int rv; + + assert(!ngtcp2_path_eq(&conn->dcid.current.ps.path, path)); + assert(!conn->pv || !ngtcp2_path_eq(&conn->pv->dcid.ps.path, path)); + assert(!conn->pv || !(conn->pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) || + !ngtcp2_path_eq(&conn->pv->fallback_dcid.ps.path, path)); + + len = ngtcp2_ringbuf_len(&conn->dcid.bound.rb); + for (i = 0; i < len; ++i) { + dcid = ngtcp2_ringbuf_get(&conn->dcid.bound.rb, i); + + if (ngtcp2_path_eq(&dcid->ps.path, path)) { + *pdcid = dcid; + return 0; + } + } + + if (conn->dcid.current.cid.datalen == 0) { + ndcid = ngtcp2_ringbuf_push_back(&conn->dcid.bound.rb); + ngtcp2_cid_zero(&cid); + ngtcp2_dcid_init(ndcid, ++conn->dcid.zerolen_seq, &cid, NULL); + ngtcp2_dcid_set_path(ndcid, path); + + *pdcid = ndcid; + + return 0; + } + + if (ngtcp2_ringbuf_len(&conn->dcid.unused.rb) == 0) { + return NGTCP2_ERR_CONN_ID_BLOCKED; + } + + if (ngtcp2_ringbuf_full(&conn->dcid.bound.rb)) { + dcid = ngtcp2_ringbuf_get(&conn->dcid.bound.rb, 0); + rv = conn_retire_dcid(conn, dcid, ts); + if (rv != 0) { + return rv; + } + } + + dcid = ngtcp2_ringbuf_get(&conn->dcid.unused.rb, 0); + ndcid = ngtcp2_ringbuf_push_back(&conn->dcid.bound.rb); + + ngtcp2_dcid_copy(ndcid, dcid); + ndcid->bound_ts = ts; + ngtcp2_dcid_set_path(ndcid, path); + + ngtcp2_ringbuf_pop_front(&conn->dcid.unused.rb); + + *pdcid = ndcid; + + return 0; +} + +static int conn_start_pmtud(ngtcp2_conn *conn) { + int rv; + size_t hard_max_udp_payload_size; + + assert(!conn->local.settings.no_pmtud); + assert(!conn->pmtud); + assert(conn_is_tls_handshake_completed(conn)); + assert(conn->remote.transport_params); + assert(conn->remote.transport_params->max_udp_payload_size >= + NGTCP2_MAX_UDP_PAYLOAD_SIZE); + + hard_max_udp_payload_size = (size_t)ngtcp2_min_uint64( + conn->remote.transport_params->max_udp_payload_size, + (uint64_t)conn->local.settings.max_tx_udp_payload_size); + + rv = + ngtcp2_pmtud_new(&conn->pmtud, conn->dcid.current.max_udp_payload_size, + hard_max_udp_payload_size, conn->pktns.tx.last_pkt_num + 1, + conn->local.settings.pmtud_probes, + conn->local.settings.pmtud_probeslen, conn->mem); + if (rv != 0) { + return rv; + } + + if (ngtcp2_pmtud_finished(conn->pmtud)) { + ngtcp2_conn_stop_pmtud(conn); + } + + return 0; +} + +int ngtcp2_conn_start_pmtud(ngtcp2_conn *conn) { + return conn_start_pmtud(conn); +} + +void ngtcp2_conn_stop_pmtud(ngtcp2_conn *conn) { + if (!conn->pmtud) { + return; + } + + ngtcp2_pmtud_del(conn->pmtud); + + conn->pmtud = NULL; +} + +static ngtcp2_ssize conn_write_pmtud_probe(ngtcp2_conn *conn, + ngtcp2_pkt_info *pi, uint8_t *dest, + size_t destlen, ngtcp2_tstamp ts) { + size_t probelen; + ngtcp2_ssize nwrite; + ngtcp2_frame lfr; + + assert(conn->pmtud); + assert(!ngtcp2_pmtud_finished(conn->pmtud)); + + if (!ngtcp2_pmtud_require_probe(conn->pmtud)) { + return 0; + } + + probelen = ngtcp2_pmtud_probelen(conn->pmtud); + if (probelen > destlen) { + return 0; + } + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "sending PMTUD probe packet len=%zu", probelen); + + lfr.type = NGTCP2_FRAME_PING; + + nwrite = ngtcp2_conn_write_single_frame_pkt( + conn, pi, dest, probelen, NGTCP2_PKT_1RTT, + NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING_FULL, &conn->dcid.current.cid, &lfr, + NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING | + NGTCP2_RTB_ENTRY_FLAG_PMTUD_PROBE, + NULL, ts); + if (nwrite < 0) { + return nwrite; + } + + assert(nwrite); + + ngtcp2_pmtud_probe_sent(conn->pmtud, conn_compute_pto(conn, &conn->pktns), + ts); + + return nwrite; +} + +/* + * conn_stop_pv stops the path validation which is currently running. + * This function does nothing if no path validation is currently being + * performed. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + */ +static int conn_stop_pv(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + int rv = 0; + ngtcp2_pv *pv = conn->pv; + + if (pv == NULL) { + return 0; + } + + if (pv->dcid.cid.datalen && pv->dcid.seq != conn->dcid.current.seq) { + rv = conn_retire_dcid(conn, &pv->dcid, ts); + if (rv != 0) { + goto fin; + } + } + + if ((pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) && + pv->fallback_dcid.cid.datalen && + pv->fallback_dcid.seq != conn->dcid.current.seq && + pv->fallback_dcid.seq != pv->dcid.seq) { + rv = conn_retire_dcid(conn, &pv->fallback_dcid, ts); + if (rv != 0) { + goto fin; + } + } + +fin: + ngtcp2_pv_del(pv); + conn->pv = NULL; + + return rv; +} + +/* + * conn_abort_pv aborts the current path validation and frees + * resources allocated for it. This function assumes that conn->pv is + * not NULL. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static int conn_abort_pv(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + ngtcp2_pv *pv = conn->pv; + int rv; + + assert(pv); + + if (!(pv->flags & NGTCP2_PV_FLAG_DONT_CARE)) { + rv = conn_call_path_validation(conn, pv, + NGTCP2_PATH_VALIDATION_RESULT_ABORTED); + if (rv != 0) { + return rv; + } + } + + return conn_stop_pv(conn, ts); +} + +static size_t conn_shape_udp_payload(ngtcp2_conn *conn, const ngtcp2_dcid *dcid, + size_t payloadlen) { + if (conn->remote.transport_params && + conn->remote.transport_params->max_udp_payload_size) { + assert(conn->remote.transport_params->max_udp_payload_size >= + NGTCP2_MAX_UDP_PAYLOAD_SIZE); + + payloadlen = (size_t)ngtcp2_min_uint64( + (uint64_t)payloadlen, + conn->remote.transport_params->max_udp_payload_size); + } + + payloadlen = + ngtcp2_min_size(payloadlen, conn->local.settings.max_tx_udp_payload_size); + + if (conn->local.settings.no_tx_udp_payload_size_shaping) { + return payloadlen; + } + + return ngtcp2_min_size(payloadlen, dcid->max_udp_payload_size); +} + +static void conn_reset_congestion_state(ngtcp2_conn *conn, ngtcp2_tstamp ts); + +/* + * conn_on_path_validation_failed is called when path validation + * fails. This function may delete |pv|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static int conn_on_path_validation_failed(ngtcp2_conn *conn, ngtcp2_pv *pv, + ngtcp2_tstamp ts) { + int rv; + + if (!(pv->flags & NGTCP2_PV_FLAG_DONT_CARE)) { + rv = conn_call_path_validation(conn, pv, + NGTCP2_PATH_VALIDATION_RESULT_FAILURE); + if (rv != 0) { + return rv; + } + } + + if (pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) { + ngtcp2_dcid_copy(&conn->dcid.current, &pv->fallback_dcid); + conn_reset_congestion_state(conn, ts); + } + + return conn_stop_pv(conn, ts); +} + +/* + * conn_write_path_challenge writes a packet which includes + * PATH_CHALLENGE frame into |dest| of length |destlen|. + * + * This function returns the number of bytes written to |dest|, or one + * of the following negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static ngtcp2_ssize conn_write_path_challenge(ngtcp2_conn *conn, + ngtcp2_path *path, + ngtcp2_pkt_info *pi, + uint8_t *dest, size_t destlen, + ngtcp2_tstamp ts) { + ngtcp2_ssize nwrite; + ngtcp2_tstamp expiry; + ngtcp2_pv *pv = conn->pv; + ngtcp2_frame lfr; + ngtcp2_duration timeout, initial_pto; + uint8_t flags; + uint64_t tx_left; + int rv; + + if (ngtcp2_pv_validation_timed_out(pv, ts)) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PTV, + "path validation was timed out"); + rv = conn_on_path_validation_failed(conn, pv, ts); + if (rv != 0) { + return rv; + } + + /* We might set path to the one which we just failed validate. + Set it to the current path here. */ + if (path) { + ngtcp2_path_copy(path, &conn->dcid.current.ps.path); + } + + return 0; + } + + ngtcp2_pv_handle_entry_expiry(pv, ts); + + if (!ngtcp2_pv_should_send_probe(pv)) { + return 0; + } + + rv = conn_call_get_path_challenge_data(conn, lfr.path_challenge.data); + if (rv != 0) { + return rv; + } + + lfr.type = NGTCP2_FRAME_PATH_CHALLENGE; + + initial_pto = conn_compute_initial_pto(conn, &conn->pktns); + timeout = conn_compute_pto(conn, &conn->pktns); + timeout = ngtcp2_max_uint64(timeout, initial_pto); + expiry = ts + timeout * (1ULL << pv->round); + + destlen = ngtcp2_min_size(destlen, NGTCP2_MAX_UDP_PAYLOAD_SIZE); + + if (conn->server) { + if (!(pv->dcid.flags & NGTCP2_DCID_FLAG_PATH_VALIDATED)) { + tx_left = conn_server_tx_left(conn, &pv->dcid); + destlen = (size_t)ngtcp2_min_uint64((uint64_t)destlen, tx_left); + if (destlen == 0) { + return 0; + } + } + + if (destlen < NGTCP2_MAX_UDP_PAYLOAD_SIZE) { + flags = NGTCP2_PV_ENTRY_FLAG_UNDERSIZED; + } else { + flags = NGTCP2_PV_ENTRY_FLAG_NONE; + } + } else { + flags = NGTCP2_PV_ENTRY_FLAG_NONE; + } + + ngtcp2_pv_add_entry(pv, lfr.path_challenge.data, expiry, flags, ts); + + nwrite = ngtcp2_conn_write_single_frame_pkt( + conn, pi, dest, destlen, NGTCP2_PKT_1RTT, NGTCP2_WRITE_PKT_FLAG_NONE, + &pv->dcid.cid, &lfr, + NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING | NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING, + &pv->dcid.ps.path, ts); + if (nwrite <= 0) { + return nwrite; + } + + if (path) { + ngtcp2_path_copy(path, &pv->dcid.ps.path); + } + + if (ngtcp2_path_eq(&pv->dcid.ps.path, &conn->dcid.current.ps.path)) { + conn->dcid.current.bytes_sent += (uint64_t)nwrite; + } else { + pv->dcid.bytes_sent += (uint64_t)nwrite; + } + + return nwrite; +} + +/* + * conn_write_path_response writes a packet which includes + * PATH_RESPONSE frame into |dest| of length |destlen|. + * + * This function returns the number of bytes written to |dest|, or one + * of the following negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static ngtcp2_ssize conn_write_path_response(ngtcp2_conn *conn, + ngtcp2_path *path, + ngtcp2_pkt_info *pi, uint8_t *dest, + size_t destlen, ngtcp2_tstamp ts) { + ngtcp2_pv *pv = conn->pv; + ngtcp2_path_challenge_entry *pcent = NULL; + ngtcp2_dcid *dcid = NULL; + ngtcp2_frame lfr; + ngtcp2_ssize nwrite; + int rv; + uint64_t tx_left; + + for (; ngtcp2_ringbuf_len(&conn->rx.path_challenge.rb);) { + pcent = ngtcp2_ringbuf_get(&conn->rx.path_challenge.rb, 0); + + if (ngtcp2_path_eq(&conn->dcid.current.ps.path, &pcent->ps.path)) { + /* Send PATH_RESPONSE from conn_write_pkt. */ + return 0; + } + + if (pv) { + if (ngtcp2_path_eq(&pv->dcid.ps.path, &pcent->ps.path)) { + dcid = &pv->dcid; + break; + } + if ((pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) && + ngtcp2_path_eq(&pv->fallback_dcid.ps.path, &pcent->ps.path)) { + dcid = &pv->fallback_dcid; + break; + } + } + + if (conn->server) { + break; + } + + /* Client does not expect to respond to path validation against + unknown path */ + ngtcp2_ringbuf_pop_front(&conn->rx.path_challenge.rb); + pcent = NULL; + } + + if (pcent == NULL) { + return 0; + } + + if (dcid == NULL) { + /* client is expected to have |path| in conn->dcid.current or + conn->pv. */ + assert(conn->server); + + rv = conn_bind_dcid(conn, &dcid, &pcent->ps.path, ts); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + return 0; + } + } + + destlen = ngtcp2_min_size(destlen, NGTCP2_MAX_UDP_PAYLOAD_SIZE); + + if (conn->server && !(dcid->flags & NGTCP2_DCID_FLAG_PATH_VALIDATED)) { + tx_left = conn_server_tx_left(conn, dcid); + destlen = (size_t)ngtcp2_min_uint64((uint64_t)destlen, tx_left); + if (destlen == 0) { + return 0; + } + } + + lfr.type = NGTCP2_FRAME_PATH_RESPONSE; + memcpy(lfr.path_response.data, pcent->data, sizeof(lfr.path_response.data)); + + nwrite = ngtcp2_conn_write_single_frame_pkt( + conn, pi, dest, destlen, NGTCP2_PKT_1RTT, NGTCP2_WRITE_PKT_FLAG_NONE, + &dcid->cid, &lfr, NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING, &pcent->ps.path, ts); + if (nwrite <= 0) { + return nwrite; + } + + if (path) { + ngtcp2_path_copy(path, &pcent->ps.path); + } + + ngtcp2_ringbuf_pop_front(&conn->rx.path_challenge.rb); + + dcid->bytes_sent += (uint64_t)nwrite; + + return nwrite; +} + +ngtcp2_ssize ngtcp2_conn_write_pkt_versioned(ngtcp2_conn *conn, + ngtcp2_path *path, + int pkt_info_version, + ngtcp2_pkt_info *pi, uint8_t *dest, + size_t destlen, ngtcp2_tstamp ts) { + return ngtcp2_conn_writev_stream_versioned( + conn, path, pkt_info_version, pi, dest, destlen, + /* pdatalen = */ NULL, NGTCP2_WRITE_STREAM_FLAG_NONE, + /* stream_id = */ -1, + /* datav = */ NULL, /* datavcnt = */ 0, ts); +} + +/* + * conn_on_version_negotiation is called when Version Negotiation + * packet is received. The function decodes the data in the buffer + * pointed by |payload| whose length is |payloadlen| as Version + * Negotiation packet payload. The packet header is given in |hd|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + * NGTCP2_ERR_INVALID_ARGUMENT + * Packet payload is badly formatted. + */ +static int conn_on_version_negotiation(ngtcp2_conn *conn, + const ngtcp2_pkt_hd *hd, + const uint8_t *payload, + size_t payloadlen) { + uint32_t sv[16]; + uint32_t *p; + int rv = 0; + size_t nsv; + size_t i; + + if (payloadlen % sizeof(uint32_t)) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + /* Version Negotiation packet is ignored if client has reacted upon + Version Negotiation packet. */ + if (conn->local.settings.original_version != conn->client_chosen_version) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + if (payloadlen > sizeof(sv)) { + p = ngtcp2_mem_malloc(conn->mem, payloadlen); + if (p == NULL) { + return NGTCP2_ERR_NOMEM; + } + } else { + p = sv; + } + + nsv = ngtcp2_pkt_decode_version_negotiation(p, payload, payloadlen); + + ngtcp2_log_rx_vn(&conn->log, hd, p, nsv); + + ngtcp2_qlog_version_negotiation_pkt_received(&conn->qlog, hd, p, nsv); + + if (!ngtcp2_is_reserved_version(conn->local.settings.original_version)) { + for (i = 0; i < nsv; ++i) { + if (p[i] == conn->local.settings.original_version) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "ignore Version Negotiation because it contains the " + "original version"); + + rv = NGTCP2_ERR_INVALID_ARGUMENT; + goto fin; + } + } + } + + rv = conn_call_recv_version_negotiation(conn, hd, p, nsv); + if (rv != 0) { + goto fin; + } + +fin: + if (p != sv) { + ngtcp2_mem_free(conn->mem, p); + } + + return rv; +} + +static uint64_t conn_tx_strmq_first_cycle(ngtcp2_conn *conn) { + ngtcp2_strm *strm; + + if (ngtcp2_pq_empty(&conn->tx.strmq)) { + return 0; + } + + strm = ngtcp2_struct_of(ngtcp2_pq_top(&conn->tx.strmq), ngtcp2_strm, pe); + return strm->cycle; +} + +uint64_t ngtcp2_conn_tx_strmq_first_cycle(ngtcp2_conn *conn) { + ngtcp2_strm *strm; + + if (ngtcp2_pq_empty(&conn->tx.strmq)) { + return 0; + } + + strm = ngtcp2_struct_of(ngtcp2_pq_top(&conn->tx.strmq), ngtcp2_strm, pe); + return strm->cycle; +} + +/* + * conn_on_retry is called when Retry packet is received. The + * function decodes the data in the buffer pointed by |pkt| whose + * length is |pktlen| as Retry packet. The length of long packet + * header is given in |hdpktlen|. |pkt| includes packet header. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + * NGTCP2_ERR_INVALID_ARGUMENT + * Packet payload is badly formatted. + * NGTCP2_ERR_PROTO + * ODCID does not match; or Token is empty. + */ +static int conn_on_retry(ngtcp2_conn *conn, const ngtcp2_pkt_hd *hd, + size_t hdpktlen, const uint8_t *pkt, size_t pktlen, + ngtcp2_tstamp ts) { + int rv; + ngtcp2_pkt_retry retry; + ngtcp2_pktns *in_pktns = conn->in_pktns; + ngtcp2_rtb *rtb = &conn->pktns.rtb; + ngtcp2_rtb *in_rtb; + uint8_t cidbuf[sizeof(retry.odcid.data) * 2 + 1]; + uint8_t *token; + + if (!in_pktns || conn->flags & NGTCP2_CONN_FLAG_RECV_RETRY) { + return 0; + } + + in_rtb = &in_pktns->rtb; + + rv = ngtcp2_pkt_decode_retry(&retry, pkt + hdpktlen, pktlen - hdpktlen); + if (rv != 0) { + return rv; + } + + retry.odcid = conn->dcid.current.cid; + + rv = ngtcp2_pkt_verify_retry_tag( + conn->client_chosen_version, &retry, pkt, pktlen, conn->callbacks.encrypt, + &conn->crypto.retry_aead, &conn->crypto.retry_aead_ctx); + if (rv != 0) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "unable to verify Retry packet integrity"); + return rv; + } + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, "odcid=0x%s", + (const char *)ngtcp2_encode_hex(cidbuf, retry.odcid.data, + retry.odcid.datalen)); + + if (retry.tokenlen == 0) { + return NGTCP2_ERR_PROTO; + } + + if (ngtcp2_cid_eq(&conn->dcid.current.cid, &hd->scid)) { + return 0; + } + + ngtcp2_qlog_retry_pkt_received(&conn->qlog, hd, &retry); + + /* DCID must be updated before invoking callback because client + generates new initial keys there. */ + conn->dcid.current.cid = hd->scid; + conn->retry_scid = hd->scid; + + conn->flags |= NGTCP2_CONN_FLAG_RECV_RETRY; + + rv = conn_call_recv_retry(conn, hd); + if (rv != 0) { + return rv; + } + + conn->state = NGTCP2_CS_CLIENT_INITIAL; + + /* Just freeing memory is dangerous because we might free twice. */ + + rv = ngtcp2_rtb_remove_all(rtb, conn, &conn->pktns, &conn->cstat); + if (rv != 0) { + return rv; + } + + rv = ngtcp2_rtb_remove_all(in_rtb, conn, in_pktns, &conn->cstat); + if (rv != 0) { + return rv; + } + + ngtcp2_mem_free(conn->mem, (uint8_t *)conn->local.settings.token); + conn->local.settings.token = NULL; + conn->local.settings.tokenlen = 0; + + token = ngtcp2_mem_malloc(conn->mem, retry.tokenlen); + if (token == NULL) { + return NGTCP2_ERR_NOMEM; + } + + ngtcp2_cpymem(token, retry.token, retry.tokenlen); + + conn->local.settings.token = token; + conn->local.settings.tokenlen = retry.tokenlen; + + reset_conn_stat_recovery(&conn->cstat); + conn_reset_congestion_state(conn, ts); + conn_reset_ecn_validation_state(conn); + + return 0; +} + +int ngtcp2_conn_detect_lost_pkt(ngtcp2_conn *conn, ngtcp2_pktns *pktns, + ngtcp2_conn_stat *cstat, ngtcp2_tstamp ts) { + return ngtcp2_rtb_detect_lost_pkt(&pktns->rtb, conn, pktns, cstat, ts); +} + +/* + * conn_recv_ack processes received ACK frame |fr|. |pkt_ts| is the + * timestamp when packet is received. |ts| should be the current + * time. Usually they are the same, but for buffered packets, + * |pkt_ts| would be earlier than |ts|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + * NGTCP2_ERR_ACK_FRAME + * ACK frame is malformed. + * NGTCP2_ERR_PROTO + * |fr| acknowledges a packet this endpoint has not sent. + * NGTCP2_ERR_CALLBACK_FAILURE + * User callback failed. + */ +static int conn_recv_ack(ngtcp2_conn *conn, ngtcp2_pktns *pktns, ngtcp2_ack *fr, + ngtcp2_tstamp pkt_ts, ngtcp2_tstamp ts) { + int rv; + ngtcp2_ssize num_acked; + ngtcp2_conn_stat *cstat = &conn->cstat; + + if (pktns->tx.last_pkt_num < fr->largest_ack) { + return NGTCP2_ERR_PROTO; + } + + rv = ngtcp2_pkt_validate_ack(fr, conn->local.settings.initial_pkt_num); + if (rv != 0) { + return rv; + } + + ngtcp2_acktr_recv_ack(&pktns->acktr, fr); + + num_acked = + ngtcp2_rtb_recv_ack(&pktns->rtb, fr, &conn->cstat, conn, pktns, pkt_ts, ts); + if (num_acked < 0) { + assert(ngtcp2_err_is_fatal((int)num_acked)); + return (int)num_acked; + } + + if (num_acked == 0) { + return 0; + } + + pktns->rtb.probe_pkt_left = 0; + + if (cstat->pto_count && + (conn->server || (conn->flags & NGTCP2_CONN_FLAG_SERVER_ADDR_VERIFIED))) { + /* Reset PTO count but no less than 2 to avoid frequent probe + packet transmission. */ + cstat->pto_count = ngtcp2_min_size(cstat->pto_count, 2); + } + + ngtcp2_conn_set_loss_detection_timer(conn, ts); + + return 0; +} + +/* + * conn_assign_recved_ack_delay_unscaled assigns + * fr->ack_delay_unscaled. + */ +static void assign_recved_ack_delay_unscaled(ngtcp2_ack *fr, + uint64_t ack_delay_exponent) { + fr->ack_delay_unscaled = + fr->ack_delay * (1ULL << ack_delay_exponent) * NGTCP2_MICROSECONDS; +} + +/* + * conn_recv_max_stream_data processes received MAX_STREAM_DATA frame + * |fr|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_STREAM_STATE + * Stream ID indicates that it is a local stream, and the local + * endpoint has not initiated it; or stream is peer initiated + * unidirectional stream. + * NGTCP2_ERR_STREAM_LIMIT + * Stream ID exceeds allowed limit. + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int conn_recv_max_stream_data(ngtcp2_conn *conn, + const ngtcp2_max_stream_data *fr) { + ngtcp2_strm *strm; + ngtcp2_idtr *idtr; + int local_stream = conn_local_stream(conn, fr->stream_id); + int bidi = bidi_stream(fr->stream_id); + int rv; + + if (bidi) { + if (local_stream) { + if (conn->local.bidi.next_stream_id <= fr->stream_id) { + return NGTCP2_ERR_STREAM_STATE; + } + } else if (conn->remote.bidi.max_streams < + ngtcp2_ord_stream_id(fr->stream_id)) { + return NGTCP2_ERR_STREAM_LIMIT; + } + + idtr = &conn->remote.bidi.idtr; + } else { + if (!local_stream || conn->local.uni.next_stream_id <= fr->stream_id) { + return NGTCP2_ERR_STREAM_STATE; + } + + idtr = &conn->remote.uni.idtr; + } + + strm = ngtcp2_conn_find_stream(conn, fr->stream_id); + if (strm == NULL) { + if (local_stream) { + /* Stream has been closed. */ + return 0; + } + + rv = ngtcp2_idtr_open(idtr, fr->stream_id); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + assert(rv == NGTCP2_ERR_STREAM_IN_USE); + /* Stream has been closed. */ + return 0; + } + + strm = ngtcp2_objalloc_strm_get(&conn->strm_objalloc); + if (strm == NULL) { + return NGTCP2_ERR_NOMEM; + } + rv = ngtcp2_conn_init_stream(conn, strm, fr->stream_id, NULL); + if (rv != 0) { + ngtcp2_objalloc_strm_release(&conn->strm_objalloc, strm); + return rv; + } + + rv = conn_call_stream_open(conn, strm); + if (rv != 0) { + return rv; + } + } + + if (strm->tx.max_offset < fr->max_stream_data) { + strm->tx.max_offset = fr->max_stream_data; + + /* Don't call callback if stream is half-closed local */ + if (strm->flags & NGTCP2_STRM_FLAG_SHUT_WR) { + return 0; + } + + rv = conn_call_extend_max_stream_data(conn, strm, fr->stream_id, + fr->max_stream_data); + if (rv != 0) { + return rv; + } + } + + return 0; +} + +/* + * conn_recv_max_data processes received MAX_DATA frame |fr|. + */ +static void conn_recv_max_data(ngtcp2_conn *conn, const ngtcp2_max_data *fr) { + conn->tx.max_offset = ngtcp2_max_uint64(conn->tx.max_offset, fr->max_data); +} + +/* + * conn_buffer_pkt buffers |pkt| of length |pktlen|, chaining it from + * |*ppc|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int conn_buffer_pkt(ngtcp2_conn *conn, ngtcp2_pktns *pktns, + const ngtcp2_path *path, const ngtcp2_pkt_info *pi, + const uint8_t *pkt, size_t pktlen, size_t dgramlen, + ngtcp2_tstamp ts) { + int rv; + ngtcp2_pkt_chain **ppc = &pktns->rx.buffed_pkts, *pc; + size_t i; + for (i = 0; *ppc && i < NGTCP2_MAX_NUM_BUFFED_RX_PKTS; + ppc = &(*ppc)->next, ++i) + ; + + if (i == NGTCP2_MAX_NUM_BUFFED_RX_PKTS) { + return 0; + } + + rv = + ngtcp2_pkt_chain_new(&pc, path, pi, pkt, pktlen, dgramlen, ts, conn->mem); + if (rv != 0) { + return rv; + } + + *ppc = pc; + + return 0; +} + +static int ensure_decrypt_buffer(ngtcp2_vec *vec, size_t n, size_t initial, + const ngtcp2_mem *mem) { + uint8_t *nbuf; + size_t len; + + if (vec->len >= n) { + return 0; + } + + len = vec->len == 0 ? initial : vec->len * 2; + for (; len < n; len *= 2) + ; + nbuf = ngtcp2_mem_realloc(mem, vec->base, len); + if (nbuf == NULL) { + return NGTCP2_ERR_NOMEM; + } + vec->base = nbuf; + vec->len = len; + + return 0; +} + +/* + * conn_ensure_decrypt_hp_buffer ensures that + * conn->crypto.decrypt_hp_buf has at least |n| bytes space. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int conn_ensure_decrypt_hp_buffer(ngtcp2_conn *conn, size_t n) { + return ensure_decrypt_buffer(&conn->crypto.decrypt_hp_buf, n, 256, conn->mem); +} + +/* + * conn_ensure_decrypt_buffer ensures that conn->crypto.decrypt_buf + * has at least |n| bytes space. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int conn_ensure_decrypt_buffer(ngtcp2_conn *conn, size_t n) { + return ensure_decrypt_buffer(&conn->crypto.decrypt_buf, n, 2048, conn->mem); +} + +/* + * decrypt_pkt decrypts the data pointed by |payload| whose length is + * |payloadlen|, and writes plaintext data to the buffer pointed by + * |dest|. The buffer pointed by |aad| is the Additional + * Authenticated Data, and its length is |aadlen|. |pkt_num| is used + * to create a nonce. |ckm| is the cryptographic key, and iv to use. + * |decrypt| is a callback function which actually decrypts a packet. + * + * This function returns the number of bytes written in |dest| if it + * succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_CALLBACK_FAILURE + * User callback failed. + * NGTCP2_ERR_DECRYPT + * Failed to decrypt a packet. + */ +static ngtcp2_ssize decrypt_pkt(uint8_t *dest, const ngtcp2_crypto_aead *aead, + const uint8_t *payload, size_t payloadlen, + const uint8_t *aad, size_t aadlen, + int64_t pkt_num, ngtcp2_crypto_km *ckm, + ngtcp2_decrypt decrypt) { + /* TODO nonce is limited to 64 bytes. */ + uint8_t nonce[64]; + int rv; + + assert(sizeof(nonce) >= ckm->iv.len); + + ngtcp2_crypto_create_nonce(nonce, ckm->iv.base, ckm->iv.len, pkt_num); + + rv = decrypt(dest, aead, &ckm->aead_ctx, payload, payloadlen, nonce, + ckm->iv.len, aad, aadlen); + + if (rv != 0) { + if (rv == NGTCP2_ERR_DECRYPT) { + return rv; + } + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + assert(payloadlen >= aead->max_overhead); + + return (ngtcp2_ssize)(payloadlen - aead->max_overhead); +} + +/* + * decrypt_hp decryptes packet header. The packet number starts at + * |pkt| + |pkt_num_offset|. The entire plaintext QUIC packet header + * will be written to the buffer pointed by |dest| whose capacity is + * |destlen|. + * + * This function returns the number of bytes written to |dest|, or one + * of the following negative error codes: + * + * NGTCP2_ERR_PROTO + * Packet is badly formatted + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed; or it does not return + * expected result. + */ +static ngtcp2_ssize +decrypt_hp(ngtcp2_pkt_hd *hd, uint8_t *dest, const ngtcp2_crypto_cipher *hp, + const uint8_t *pkt, size_t pktlen, size_t pkt_num_offset, + const ngtcp2_crypto_cipher_ctx *hp_ctx, ngtcp2_hp_mask hp_mask) { + size_t sample_offset; + uint8_t *p = dest; + uint8_t mask[NGTCP2_HP_SAMPLELEN]; + size_t i; + int rv; + + assert(hp_mask); + + if (pkt_num_offset + 4 + NGTCP2_HP_SAMPLELEN > pktlen) { + return NGTCP2_ERR_PROTO; + } + + p = ngtcp2_cpymem(p, pkt, pkt_num_offset); + + sample_offset = pkt_num_offset + 4; + + rv = hp_mask(mask, hp, hp_ctx, pkt + sample_offset); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + if (hd->flags & NGTCP2_PKT_FLAG_LONG_FORM) { + dest[0] = (uint8_t)(dest[0] ^ (mask[0] & 0x0f)); + } else { + dest[0] = (uint8_t)(dest[0] ^ (mask[0] & 0x1f)); + if (dest[0] & NGTCP2_SHORT_KEY_PHASE_BIT) { + hd->flags |= NGTCP2_PKT_FLAG_KEY_PHASE; + } + } + + hd->pkt_numlen = (size_t)((dest[0] & NGTCP2_PKT_NUMLEN_MASK) + 1); + + for (i = 0; i < hd->pkt_numlen; ++i) { + *p++ = *(pkt + pkt_num_offset + i) ^ mask[i + 1]; + } + + hd->pkt_num = ngtcp2_get_pkt_num(p - hd->pkt_numlen, hd->pkt_numlen); + + return p - dest; +} + +/* + * conn_emit_pending_crypto_data delivers pending stream data to the + * application due to packet reordering. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_CALLBACK_FAILURE + * User callback failed + * NGTCP2_ERR_CRYPTO + * TLS backend reported error + */ +static int +conn_emit_pending_crypto_data(ngtcp2_conn *conn, + ngtcp2_encryption_level encryption_level, + ngtcp2_strm *strm, uint64_t rx_offset) { + size_t datalen; + const uint8_t *data; + int rv; + uint64_t offset; + + if (!strm->rx.rob) { + return 0; + } + + for (;;) { + datalen = ngtcp2_rob_data_at(strm->rx.rob, &data, rx_offset); + if (datalen == 0) { + assert(rx_offset == ngtcp2_strm_rx_offset(strm)); + return 0; + } + + offset = rx_offset; + rx_offset += datalen; + + rv = + conn_call_recv_crypto_data(conn, encryption_level, offset, data, datalen); + if (rv != 0) { + return rv; + } + + ngtcp2_rob_pop(strm->rx.rob, rx_offset - datalen, datalen); + } +} + +/* + * conn_recv_connection_close is called when CONNECTION_CLOSE or + * APPLICATION_CLOSE frame is received. + */ +static int conn_recv_connection_close(ngtcp2_conn *conn, + ngtcp2_connection_close *fr) { + ngtcp2_ccerr *ccerr = &conn->rx.ccerr; + + conn->state = NGTCP2_CS_DRAINING; + if (fr->type == NGTCP2_FRAME_CONNECTION_CLOSE) { + ccerr->type = NGTCP2_CCERR_TYPE_TRANSPORT; + } else { + ccerr->type = NGTCP2_CCERR_TYPE_APPLICATION; + } + ccerr->error_code = fr->error_code; + ccerr->frame_type = fr->frame_type; + + if (!fr->reasonlen) { + ccerr->reasonlen = 0; + + return 0; + } + + if (ccerr->reason == NULL) { + ccerr->reason = ngtcp2_mem_malloc(conn->mem, NGTCP2_CCERR_MAX_REASONLEN); + if (ccerr->reason == NULL) { + return NGTCP2_ERR_NOMEM; + } + } + + ccerr->reasonlen = ngtcp2_min_size(fr->reasonlen, NGTCP2_CCERR_MAX_REASONLEN); + ngtcp2_cpymem((uint8_t *)ccerr->reason, fr->reason, ccerr->reasonlen); + + return 0; +} + +static void conn_recv_path_challenge(ngtcp2_conn *conn, const ngtcp2_path *path, + ngtcp2_path_challenge *fr) { + ngtcp2_path_challenge_entry *ent; + + /* client only responds to PATH_CHALLENGE from the current path or + path which client is migrating to. */ + if (!conn->server && !ngtcp2_path_eq(&conn->dcid.current.ps.path, path) && + (!conn->pv || !ngtcp2_path_eq(&conn->pv->dcid.ps.path, path))) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "discard PATH_CHALLENGE from the path which is not current " + "or endpoint is migrating to"); + return; + } + + ent = ngtcp2_ringbuf_push_front(&conn->rx.path_challenge.rb); + ngtcp2_path_challenge_entry_init(ent, path, fr->data); +} + +/* + * conn_reset_congestion_state resets congestion state. + */ +static void conn_reset_congestion_state(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + conn_reset_conn_stat_cc(conn, &conn->cstat); + + if (conn->cc.reset) { + conn->cc.reset(&conn->cc, &conn->cstat, ts); + } + + if (conn->hs_pktns) { + ngtcp2_rtb_reset_cc_state(&conn->hs_pktns->rtb, + conn->hs_pktns->tx.last_pkt_num + 1); + } + ngtcp2_rtb_reset_cc_state(&conn->pktns.rtb, conn->pktns.tx.last_pkt_num + 1); + ngtcp2_rst_init(&conn->rst); + + conn->tx.pacing.next_ts = UINT64_MAX; +} + +static int conn_recv_path_response(ngtcp2_conn *conn, ngtcp2_path_response *fr, + ngtcp2_tstamp ts) { + int rv; + ngtcp2_pv *pv = conn->pv, *npv; + uint8_t ent_flags; + + if (!pv) { + return 0; + } + + rv = ngtcp2_pv_validate(pv, &ent_flags, fr->data); + if (rv != 0) { + assert(!ngtcp2_err_is_fatal(rv)); + + return 0; + } + + if (!(pv->flags & NGTCP2_PV_FLAG_DONT_CARE)) { + if (pv->dcid.seq != conn->dcid.current.seq) { + assert(!conn->server); + assert(conn->dcid.current.cid.datalen); + + rv = conn_retire_dcid(conn, &conn->dcid.current, ts); + if (rv != 0) { + return rv; + } + ngtcp2_dcid_copy(&conn->dcid.current, &pv->dcid); + + conn_reset_congestion_state(conn, ts); + conn_reset_ecn_validation_state(conn); + } + + assert(ngtcp2_path_eq(&pv->dcid.ps.path, &conn->dcid.current.ps.path)); + + conn->dcid.current.flags |= NGTCP2_DCID_FLAG_PATH_VALIDATED; + + if (!conn->local.settings.no_pmtud) { + ngtcp2_conn_stop_pmtud(conn); + + if (!(ent_flags & NGTCP2_PV_ENTRY_FLAG_UNDERSIZED)) { + rv = conn_start_pmtud(conn); + if (rv != 0) { + return rv; + } + } + } + + if (!(ent_flags & NGTCP2_PV_ENTRY_FLAG_UNDERSIZED)) { + rv = conn_call_path_validation(conn, pv, + NGTCP2_PATH_VALIDATION_RESULT_SUCCESS); + if (rv != 0) { + return rv; + } + } + } + + if (pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) { + if (ent_flags & NGTCP2_PV_ENTRY_FLAG_UNDERSIZED) { + assert(conn->server); + + /* Validate path again */ + rv = ngtcp2_pv_new(&npv, &pv->dcid, conn_compute_pv_timeout(conn), + NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE, &conn->log, + conn->mem); + if (rv != 0) { + return rv; + } + + npv->dcid.flags |= NGTCP2_DCID_FLAG_PATH_VALIDATED; + ngtcp2_dcid_copy(&npv->fallback_dcid, &pv->fallback_dcid); + npv->fallback_pto = pv->fallback_pto; + } else { + rv = ngtcp2_pv_new(&npv, &pv->fallback_dcid, + conn_compute_pv_timeout_pto(conn, pv->fallback_pto), + NGTCP2_PV_FLAG_DONT_CARE, &conn->log, conn->mem); + if (rv != 0) { + return rv; + } + } + + /* Unset the flag bit so that conn_stop_pv does not retire + DCID. */ + pv->flags &= (uint8_t)~NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE; + + rv = conn_stop_pv(conn, ts); + if (rv != 0) { + ngtcp2_pv_del(npv); + return rv; + } + + conn->pv = npv; + + return 0; + } + + return conn_stop_pv(conn, ts); +} + +/* + * pktns_pkt_num_is_duplicate returns nonzero if |pkt_num| is + * duplicated packet number. + */ +static int pktns_pkt_num_is_duplicate(ngtcp2_pktns *pktns, int64_t pkt_num) { + return ngtcp2_gaptr_is_pushed(&pktns->rx.pngap, (uint64_t)pkt_num, 1); +} + +/* + * pktns_commit_recv_pkt_num marks packet number |pkt_num| as + * received. + */ +static int pktns_commit_recv_pkt_num(ngtcp2_pktns *pktns, int64_t pkt_num, + int ack_eliciting, ngtcp2_tstamp ts) { + int rv; + ngtcp2_range r; + + rv = ngtcp2_gaptr_push(&pktns->rx.pngap, (uint64_t)pkt_num, 1); + if (rv != 0) { + return rv; + } + + if (ngtcp2_ksl_len(&pktns->rx.pngap.gap) > 256) { + ngtcp2_gaptr_drop_first_gap(&pktns->rx.pngap); + } + + if (ack_eliciting) { + if (pktns->rx.max_ack_eliciting_pkt_num != -1) { + if (pkt_num < pktns->rx.max_ack_eliciting_pkt_num) { + ngtcp2_acktr_immediate_ack(&pktns->acktr); + } else if (pkt_num != pktns->rx.max_ack_eliciting_pkt_num + 1) { + r = ngtcp2_gaptr_get_first_gap_after( + &pktns->rx.pngap, (uint64_t)pktns->rx.max_ack_eliciting_pkt_num); + + if (r.begin < (uint64_t)pkt_num) { + ngtcp2_acktr_immediate_ack(&pktns->acktr); + } + } + } + + if (pktns->rx.max_ack_eliciting_pkt_num < pkt_num) { + pktns->rx.max_ack_eliciting_pkt_num = pkt_num; + } + } + + if (pktns->rx.max_pkt_num < pkt_num) { + pktns->rx.max_pkt_num = pkt_num; + pktns->rx.max_pkt_ts = ts; + } + + return 0; +} + +/* + * verify_token verifies |hd| contains |token| in its token field. It + * returns 0 if it succeeds, or NGTCP2_ERR_PROTO. + */ +static int verify_token(const uint8_t *token, size_t tokenlen, + const ngtcp2_pkt_hd *hd) { + if (tokenlen == hd->tokenlen && ngtcp2_cmemeq(token, hd->token, tokenlen)) { + return 0; + } + return NGTCP2_ERR_PROTO; +} + +static void pktns_increase_ecn_counts(ngtcp2_pktns *pktns, + const ngtcp2_pkt_info *pi) { + switch (pi->ecn & NGTCP2_ECN_MASK) { + case NGTCP2_ECN_ECT_0: + ++pktns->rx.ecn.ect0; + break; + case NGTCP2_ECN_ECT_1: + ++pktns->rx.ecn.ect1; + break; + case NGTCP2_ECN_CE: + ++pktns->rx.ecn.ce; + break; + } +} + +/* + * vneg_available_versions_includes returns nonzero if + * |available_versions| of length |available_versionslen| includes + * |version|. |available_versions| is the wire image of + * available_versions field of version_information transport + * parameter, and each version is encoded in network byte order. + */ +static int vneg_available_versions_includes(const uint8_t *available_versions, + size_t available_versionslen, + uint32_t version) { + size_t i; + uint32_t v; + + assert(!(available_versionslen & 0x3)); + + if (available_versionslen == 0) { + return 0; + } + + for (i = 0; i < available_versionslen; i += sizeof(uint32_t)) { + available_versions = ngtcp2_get_uint32be(&v, available_versions); + + if (version == v) { + return 1; + } + } + + return 0; +} + +/* + * conn_verify_fixed_bit verifies that fixed bit in |hd| is + * acceptable. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_INVALID_ARGUMENT + * Clearing fixed bit is not permitted. + */ +static int conn_verify_fixed_bit(ngtcp2_conn *conn, ngtcp2_pkt_hd *hd) { + if (!(hd->flags & NGTCP2_PKT_FLAG_FIXED_BIT_CLEAR)) { + return 0; + } + + if (conn->server) { + switch (hd->type) { + case NGTCP2_PKT_INITIAL: + case NGTCP2_PKT_0RTT: + case NGTCP2_PKT_HANDSHAKE: + /* RFC 9287 requires that a token from NEW_TOKEN. */ + if (!(conn->flags & NGTCP2_CONN_FLAG_INITIAL_PKT_PROCESSED) && + (conn->local.settings.token_type != NGTCP2_TOKEN_TYPE_NEW_TOKEN || + !conn->local.settings.tokenlen)) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + break; + } + } + + /* TODO we have no information that we enabled grease_quic_bit in + the previous connection. */ + if (!conn->local.transport_params.grease_quic_bit) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + return 0; +} + +static int conn_recv_crypto(ngtcp2_conn *conn, + ngtcp2_encryption_level encryption_level, + ngtcp2_strm *strm, const ngtcp2_stream *fr); + +static ngtcp2_ssize conn_recv_pkt(ngtcp2_conn *conn, const ngtcp2_path *path, + const ngtcp2_pkt_info *pi, const uint8_t *pkt, + size_t pktlen, size_t dgramlen, + ngtcp2_tstamp pkt_ts, ngtcp2_tstamp ts); + +static int conn_process_buffered_protected_pkt(ngtcp2_conn *conn, + ngtcp2_pktns *pktns, + ngtcp2_tstamp ts); + +/* + * conn_recv_handshake_pkt processes received packet |pkt| whose + * length is |pktlen| during handshake period. The buffer pointed by + * |pkt| might contain multiple packets. This function only processes + * one packet. |pkt_ts| is the timestamp when packet is received. + * |ts| should be the current time. Usually they are the same, but + * for buffered packets, |pkt_ts| would be earlier than |ts|. + * + * This function returns the number of bytes it reads if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_RECV_VERSION_NEGOTIATION + * Version Negotiation packet is received. + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + * NGTCP2_ERR_DISCARD_PKT + * Packet was discarded because plain text header was malformed; + * or its payload could not be decrypted. + * NGTCP2_ERR_FRAME_FORMAT + * Frame is badly formatted + * NGTCP2_ERR_ACK_FRAME + * ACK frame is malformed. + * NGTCP2_ERR_CRYPTO + * TLS stack reported error. + * NGTCP2_ERR_PROTO + * Generic QUIC protocol error. + * + * In addition to the above error codes, error codes returned from + * conn_recv_pkt are also returned. + */ +static ngtcp2_ssize +conn_recv_handshake_pkt(ngtcp2_conn *conn, const ngtcp2_path *path, + const ngtcp2_pkt_info *pi, const uint8_t *pkt, + size_t pktlen, size_t dgramlen, ngtcp2_tstamp pkt_ts, + ngtcp2_tstamp ts) { + ngtcp2_ssize nread; + ngtcp2_pkt_hd hd; + ngtcp2_max_frame mfr; + ngtcp2_frame *fr = &mfr.fr; + int rv; + int require_ack = 0; + size_t hdpktlen; + const uint8_t *payload; + size_t payloadlen; + ngtcp2_ssize nwrite; + ngtcp2_crypto_aead *aead; + ngtcp2_crypto_cipher *hp; + ngtcp2_crypto_km *ckm; + ngtcp2_crypto_cipher_ctx *hp_ctx; + ngtcp2_hp_mask hp_mask; + ngtcp2_decrypt decrypt; + ngtcp2_pktns *pktns; + ngtcp2_strm *crypto; + ngtcp2_encryption_level encryption_level; + int invalid_reserved_bits = 0; + + if (pktlen == 0) { + return 0; + } + + if (!(pkt[0] & NGTCP2_HEADER_FORM_BIT)) { + if (conn->state == NGTCP2_CS_SERVER_INITIAL) { + /* Ignore 1RTT packet unless server's first Handshake packet has + been transmitted. */ + return (ngtcp2_ssize)pktlen; + } + + if (conn->pktns.crypto.rx.ckm) { + return 0; + } + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "buffering 1RTT packet len=%zu", pktlen); + + rv = + conn_buffer_pkt(conn, &conn->pktns, path, pi, pkt, pktlen, dgramlen, ts); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + return (ngtcp2_ssize)pktlen; + } + + nread = ngtcp2_pkt_decode_hd_long(&hd, pkt, pktlen); + if (nread < 0) { + return NGTCP2_ERR_DISCARD_PKT; + } + + switch (hd.type) { + case NGTCP2_PKT_VERSION_NEGOTIATION: + hdpktlen = (size_t)nread; + + ngtcp2_log_rx_pkt_hd(&conn->log, &hd); + + if (conn->server) { + return NGTCP2_ERR_DISCARD_PKT; + } + + /* Receiving Version Negotiation packet after getting Handshake + packet from server is invalid. */ + if (conn->flags & NGTCP2_CONN_FLAG_INITIAL_PKT_PROCESSED) { + return NGTCP2_ERR_DISCARD_PKT; + } + + if (!ngtcp2_cid_eq(&conn->oscid, &hd.dcid)) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet was ignored because of mismatched DCID"); + return NGTCP2_ERR_DISCARD_PKT; + } + + if (!ngtcp2_cid_eq(&conn->dcid.current.cid, &hd.scid)) { + /* Just discard invalid Version Negotiation packet */ + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet was ignored because of mismatched SCID"); + return NGTCP2_ERR_DISCARD_PKT; + } + rv = + conn_on_version_negotiation(conn, &hd, pkt + hdpktlen, pktlen - hdpktlen); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + return NGTCP2_ERR_DISCARD_PKT; + } + return NGTCP2_ERR_RECV_VERSION_NEGOTIATION; + case NGTCP2_PKT_RETRY: + hdpktlen = (size_t)nread; + + ngtcp2_log_rx_pkt_hd(&conn->log, &hd); + + if (conn->server) { + return NGTCP2_ERR_DISCARD_PKT; + } + + if (conn_verify_fixed_bit(conn, &hd) != 0) { + return NGTCP2_ERR_DISCARD_PKT; + } + + /* Receiving Retry packet after getting Initial packet from server + is invalid. */ + if (conn->flags & NGTCP2_CONN_FLAG_INITIAL_PKT_PROCESSED) { + return NGTCP2_ERR_DISCARD_PKT; + } + + if (conn->client_chosen_version != hd.version) { + return NGTCP2_ERR_DISCARD_PKT; + } + + rv = conn_on_retry(conn, &hd, hdpktlen, pkt, pktlen, ts); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + return NGTCP2_ERR_DISCARD_PKT; + } + return (ngtcp2_ssize)pktlen; + } + + if (pktlen < (size_t)nread + hd.len) { + return NGTCP2_ERR_DISCARD_PKT; + } + + pktlen = (size_t)nread + hd.len; + + if (!ngtcp2_is_supported_version(hd.version)) { + return NGTCP2_ERR_DISCARD_PKT; + } + + if (conn->server) { + if (hd.version != conn->client_chosen_version && + (!conn->negotiated_version || hd.version != conn->negotiated_version)) { + return NGTCP2_ERR_DISCARD_PKT; + } + } else if (hd.version != conn->client_chosen_version && + conn->negotiated_version && + hd.version != conn->negotiated_version) { + return NGTCP2_ERR_DISCARD_PKT; + } + + if (conn_verify_fixed_bit(conn, &hd) != 0) { + return NGTCP2_ERR_DISCARD_PKT; + } + + /* Quoted from spec: if subsequent packets of those types include a + different Source Connection ID, they MUST be discarded. */ + if ((conn->flags & NGTCP2_CONN_FLAG_INITIAL_PKT_PROCESSED) && + !ngtcp2_cid_eq(&conn->dcid.current.cid, &hd.scid)) { + ngtcp2_log_rx_pkt_hd(&conn->log, &hd); + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet was ignored because of mismatched SCID"); + return NGTCP2_ERR_DISCARD_PKT; + } + + switch (hd.type) { + case NGTCP2_PKT_0RTT: + if (!conn->server) { + return NGTCP2_ERR_DISCARD_PKT; + } + + if (hd.version != conn->client_chosen_version) { + return NGTCP2_ERR_DISCARD_PKT; + } + + if (conn->flags & NGTCP2_CONN_FLAG_INITIAL_PKT_PROCESSED) { + if (conn->early.ckm) { + ngtcp2_ssize nread2; + /* TODO Avoid to parse header twice. */ + nread2 = + conn_recv_pkt(conn, path, pi, pkt, pktlen, dgramlen, pkt_ts, ts); + if (nread2 < 0) { + return nread2; + } + } + + /* Discard 0-RTT packet if we don't have a key to decrypt it. */ + return (ngtcp2_ssize)pktlen; + } + + /* Buffer re-ordered 0-RTT packet. */ + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "buffering 0-RTT packet len=%zu", pktlen); + + rv = conn_buffer_pkt(conn, conn->in_pktns, path, pi, pkt, pktlen, dgramlen, + ts); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + + return (ngtcp2_ssize)pktlen; + case NGTCP2_PKT_INITIAL: + if (!conn->in_pktns) { + ngtcp2_log_info( + &conn->log, NGTCP2_LOG_EVENT_PKT, + "Initial packet is discarded because keys have been discarded"); + return (ngtcp2_ssize)pktlen; + } + + assert(conn->in_pktns); + + if (conn->server) { + if (dgramlen < NGTCP2_MAX_UDP_PAYLOAD_SIZE) { + ngtcp2_log_info( + &conn->log, NGTCP2_LOG_EVENT_PKT, + "Initial packet was ignored because it is included in UDP datagram " + "less than %zu bytes: %zu bytes", + NGTCP2_MAX_UDP_PAYLOAD_SIZE, dgramlen); + return NGTCP2_ERR_DISCARD_PKT; + } + if (conn->local.settings.tokenlen) { + rv = verify_token(conn->local.settings.token, + conn->local.settings.tokenlen, &hd); + if (rv != 0) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet was ignored because token is invalid"); + return NGTCP2_ERR_DISCARD_PKT; + } + } + if ((conn->flags & NGTCP2_CONN_FLAG_INITIAL_PKT_PROCESSED) == 0) { + /* Set rcid here so that it is available to callback. If this + packet is discarded later in this function and no packet is + processed in this connection attempt so far, connection + will be dropped. */ + conn->rcid = hd.dcid; + + rv = conn_call_recv_client_initial(conn, &hd.dcid); + if (rv != 0) { + return rv; + } + } + } else { + if (hd.tokenlen != 0) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet was ignored because token is not empty"); + return NGTCP2_ERR_DISCARD_PKT; + } + + if (hd.version != conn->client_chosen_version && + !conn->negotiated_version && conn->vneg.version != hd.version) { + if (!vneg_available_versions_includes(conn->vneg.available_versions, + conn->vneg.available_versionslen, + hd.version)) { + return NGTCP2_ERR_DISCARD_PKT; + } + + /* Install new Initial keys using QUIC version = hd.version */ + rv = conn_call_version_negotiation( + conn, hd.version, + (conn->flags & NGTCP2_CONN_FLAG_RECV_RETRY) ? &conn->dcid.current.cid + : &conn->rcid); + if (rv != 0) { + return rv; + } + + assert(conn->vneg.version == hd.version); + } + } + + pktns = conn->in_pktns; + crypto = &pktns->crypto.strm; + encryption_level = NGTCP2_ENCRYPTION_LEVEL_INITIAL; + + if (hd.version == conn->client_chosen_version) { + ckm = pktns->crypto.rx.ckm; + hp_ctx = &pktns->crypto.rx.hp_ctx; + } else { + assert(conn->vneg.version == hd.version); + + ckm = conn->vneg.rx.ckm; + hp_ctx = &conn->vneg.rx.hp_ctx; + } + + break; + case NGTCP2_PKT_HANDSHAKE: + if (hd.version != conn->negotiated_version) { + return NGTCP2_ERR_DISCARD_PKT; + } + + if (!conn->hs_pktns->crypto.rx.ckm) { + if (conn->server) { + ngtcp2_log_info( + &conn->log, NGTCP2_LOG_EVENT_PKT, + "Handshake packet at this point is unexpected and discarded"); + return (ngtcp2_ssize)pktlen; + } + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "buffering Handshake packet len=%zu", pktlen); + + rv = conn_buffer_pkt(conn, conn->hs_pktns, path, pi, pkt, pktlen, + dgramlen, ts); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + return (ngtcp2_ssize)pktlen; + } + + pktns = conn->hs_pktns; + crypto = &pktns->crypto.strm; + encryption_level = NGTCP2_ENCRYPTION_LEVEL_HANDSHAKE; + ckm = pktns->crypto.rx.ckm; + hp_ctx = &pktns->crypto.rx.hp_ctx; + + break; + default: + ngtcp2_unreachable(); + } + + hp_mask = conn->callbacks.hp_mask; + decrypt = conn->callbacks.decrypt; + aead = &pktns->crypto.ctx.aead; + hp = &pktns->crypto.ctx.hp; + + assert(ckm); + assert(hp_mask); + assert(decrypt); + + rv = conn_ensure_decrypt_hp_buffer(conn, (size_t)nread + 4); + if (rv != 0) { + return rv; + } + + nwrite = decrypt_hp(&hd, conn->crypto.decrypt_hp_buf.base, hp, pkt, pktlen, + (size_t)nread, hp_ctx, hp_mask); + if (nwrite < 0) { + if (ngtcp2_err_is_fatal((int)nwrite)) { + return nwrite; + } + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "could not decrypt packet number"); + return NGTCP2_ERR_DISCARD_PKT; + } + + hdpktlen = (size_t)nwrite; + payload = pkt + hdpktlen; + payloadlen = hd.len - hd.pkt_numlen; + + hd.pkt_num = + ngtcp2_pkt_adjust_pkt_num(pktns->rx.max_pkt_num, hd.pkt_num, hd.pkt_numlen); + if (hd.pkt_num > NGTCP2_MAX_PKT_NUM) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "pkn=%" PRId64 " is greater than maximum pkn", hd.pkt_num); + return NGTCP2_ERR_DISCARD_PKT; + } + + ngtcp2_log_rx_pkt_hd(&conn->log, &hd); + + rv = ngtcp2_pkt_verify_reserved_bits(conn->crypto.decrypt_hp_buf.base[0]); + if (rv != 0) { + invalid_reserved_bits = 1; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet has incorrect reserved bits"); + + /* Will return error after decrypting payload */ + } + + if (pktns_pkt_num_is_duplicate(pktns, hd.pkt_num)) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet was discarded because of duplicated packet number"); + return NGTCP2_ERR_DISCARD_PKT; + } + + rv = conn_ensure_decrypt_buffer(conn, payloadlen); + if (rv != 0) { + return rv; + } + + nwrite = decrypt_pkt(conn->crypto.decrypt_buf.base, aead, payload, payloadlen, + conn->crypto.decrypt_hp_buf.base, hdpktlen, hd.pkt_num, + ckm, decrypt); + if (nwrite < 0) { + if (ngtcp2_err_is_fatal((int)nwrite)) { + return nwrite; + } + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "could not decrypt packet payload"); + return NGTCP2_ERR_DISCARD_PKT; + } + + if (invalid_reserved_bits) { + return NGTCP2_ERR_PROTO; + } + + if (!conn->server && hd.version != conn->client_chosen_version && + !conn->negotiated_version) { + conn->negotiated_version = hd.version; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "the negotiated version is 0x%08x", + conn->negotiated_version); + } + + payload = conn->crypto.decrypt_buf.base; + payloadlen = (size_t)nwrite; + + switch (hd.type) { + case NGTCP2_PKT_INITIAL: + if (!conn->server || + ((conn->flags & NGTCP2_CONN_FLAG_INITIAL_PKT_PROCESSED) && + !ngtcp2_cid_eq(&conn->rcid, &hd.dcid))) { + rv = conn_verify_dcid(conn, NULL, &hd); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet was ignored because of mismatched DCID"); + return NGTCP2_ERR_DISCARD_PKT; + } + } + break; + case NGTCP2_PKT_HANDSHAKE: + rv = conn_verify_dcid(conn, NULL, &hd); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet was ignored because of mismatched DCID"); + return NGTCP2_ERR_DISCARD_PKT; + } + break; + default: + ngtcp2_unreachable(); + } + + if (payloadlen == 0) { + /* QUIC packet must contain at least one frame */ + if (hd.type == NGTCP2_PKT_INITIAL) { + return NGTCP2_ERR_DISCARD_PKT; + } + return NGTCP2_ERR_PROTO; + } + + if (hd.type == NGTCP2_PKT_INITIAL && + !(conn->flags & NGTCP2_CONN_FLAG_INITIAL_PKT_PROCESSED)) { + conn->flags |= NGTCP2_CONN_FLAG_INITIAL_PKT_PROCESSED; + if (!conn->server) { + conn->dcid.current.cid = hd.scid; + } + } + + ngtcp2_qlog_pkt_received_start(&conn->qlog); + + for (; payloadlen;) { + nread = ngtcp2_pkt_decode_frame(fr, payload, payloadlen); + if (nread < 0) { + return nread; + } + + payload += nread; + payloadlen -= (size_t)nread; + + switch (fr->type) { + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + fr->ack.ack_delay = 0; + fr->ack.ack_delay_unscaled = 0; + break; + } + + ngtcp2_log_rx_fr(&conn->log, &hd, fr); + + switch (fr->type) { + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + if (!conn->server && hd.type == NGTCP2_PKT_HANDSHAKE) { + conn->flags |= NGTCP2_CONN_FLAG_SERVER_ADDR_VERIFIED; + } + rv = conn_recv_ack(conn, pktns, &fr->ack, pkt_ts, ts); + if (rv != 0) { + return rv; + } + break; + case NGTCP2_FRAME_PADDING: + break; + case NGTCP2_FRAME_CRYPTO: + if (!conn->server && !conn->negotiated_version && + ngtcp2_vec_len(fr->stream.data, fr->stream.datacnt)) { + conn->negotiated_version = hd.version; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "the negotiated version is 0x%08x", + conn->negotiated_version); + } + + rv = conn_recv_crypto(conn, encryption_level, crypto, &fr->stream); + if (rv != 0) { + return rv; + } + require_ack = 1; + break; + case NGTCP2_FRAME_CONNECTION_CLOSE: + rv = conn_recv_connection_close(conn, &fr->connection_close); + if (rv != 0) { + return rv; + } + break; + case NGTCP2_FRAME_PING: + require_ack = 1; + break; + default: + return NGTCP2_ERR_PROTO; + } + + ngtcp2_qlog_write_frame(&conn->qlog, fr); + } + + if (hd.type == NGTCP2_PKT_HANDSHAKE) { + /* Successful processing of Handshake packet from a remote + endpoint validates its source address. */ + conn->dcid.current.flags |= NGTCP2_DCID_FLAG_PATH_VALIDATED; + } + + ngtcp2_qlog_pkt_received_end(&conn->qlog, &hd, pktlen); + + rv = pktns_commit_recv_pkt_num(pktns, hd.pkt_num, require_ack, pkt_ts); + if (rv != 0) { + return rv; + } + + pktns_increase_ecn_counts(pktns, pi); + + /* Initial and Handshake are always acknowledged without delay. No + need to call ngtcp2_acktr_immediate_ack(). */ + rv = + ngtcp2_conn_sched_ack(conn, &pktns->acktr, hd.pkt_num, require_ack, pkt_ts); + if (rv != 0) { + return rv; + } + + conn_restart_timer_on_read(conn, ts); + + ngtcp2_qlog_metrics_updated(&conn->qlog, &conn->cstat); + + return conn->state == NGTCP2_CS_DRAINING ? NGTCP2_ERR_DRAINING + : (ngtcp2_ssize)pktlen; +} + +static int is_unrecoverable_error(int liberr) { + switch (liberr) { + case NGTCP2_ERR_CRYPTO: + case NGTCP2_ERR_REQUIRED_TRANSPORT_PARAM: + case NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM: + case NGTCP2_ERR_TRANSPORT_PARAM: + case NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE: + return 1; + } + + return 0; +} + +/* + * conn_recv_handshake_cpkt processes compound packet during + * handshake. The buffer pointed by |pkt| might contain multiple + * packets. The 1RTT packet must be the last one because it does not + * have payload length field. + * + * This function returns the same error code returned by + * conn_recv_handshake_pkt. + */ +static ngtcp2_ssize conn_recv_handshake_cpkt(ngtcp2_conn *conn, + const ngtcp2_path *path, + const ngtcp2_pkt_info *pi, + const uint8_t *pkt, size_t pktlen, + ngtcp2_tstamp ts) { + ngtcp2_ssize nread; + size_t dgramlen = pktlen; + const uint8_t *origpkt = pkt; + uint32_t version; + + if (ngtcp2_path_eq(&conn->dcid.current.ps.path, path)) { + conn->dcid.current.bytes_recv += dgramlen; + } + + while (pktlen) { + nread = + conn_recv_handshake_pkt(conn, path, pi, pkt, pktlen, dgramlen, ts, ts); + if (nread < 0) { + if (ngtcp2_err_is_fatal((int)nread)) { + return nread; + } + + if (nread == NGTCP2_ERR_DRAINING) { + return NGTCP2_ERR_DRAINING; + } + + if ((pkt[0] & NGTCP2_HEADER_FORM_BIT) && pktlen > 4) { + /* Not a Version Negotiation packet */ + ngtcp2_get_uint32be(&version, &pkt[1]); + if (ngtcp2_pkt_get_type_long(version, pkt[0]) == NGTCP2_PKT_INITIAL) { + if (conn->server) { + if (is_unrecoverable_error((int)nread)) { + /* If server gets crypto error from TLS stack, it is + unrecoverable, therefore drop connection. */ + return nread; + } + + /* If server discards first Initial, then drop connection + state. This is because SCID in packet might be corrupted + and the current connection state might wrongly discard + valid packet and prevent the handshake from + completing. */ + if (conn->in_pktns && conn->in_pktns->rx.max_pkt_num == -1) { + return NGTCP2_ERR_DROP_CONN; + } + + return (ngtcp2_ssize)dgramlen; + } + /* client */ + if (is_unrecoverable_error((int)nread)) { + /* If client gets crypto error from TLS stack, it is + unrecoverable, therefore drop connection. */ + return nread; + } + return (ngtcp2_ssize)dgramlen; + } + } + + if (nread == NGTCP2_ERR_DISCARD_PKT) { + return (ngtcp2_ssize)dgramlen; + } + + return nread; + } + + if (nread == 0) { + assert(!(pkt[0] & NGTCP2_HEADER_FORM_BIT)); + return pkt - origpkt; + } + + assert(pktlen >= (size_t)nread); + pkt += nread; + pktlen -= (size_t)nread; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "read packet %td left %zu", nread, pktlen); + } + + return (ngtcp2_ssize)dgramlen; +} + +int ngtcp2_conn_init_stream(ngtcp2_conn *conn, ngtcp2_strm *strm, + int64_t stream_id, void *stream_user_data) { + int rv; + uint64_t max_rx_offset; + uint64_t max_tx_offset; + int local_stream = conn_local_stream(conn, stream_id); + + assert(conn->remote.transport_params); + + if (bidi_stream(stream_id)) { + if (local_stream) { + max_rx_offset = + conn->local.transport_params.initial_max_stream_data_bidi_local; + max_tx_offset = + conn->remote.transport_params->initial_max_stream_data_bidi_remote; + } else { + max_rx_offset = + conn->local.transport_params.initial_max_stream_data_bidi_remote; + max_tx_offset = + conn->remote.transport_params->initial_max_stream_data_bidi_local; + } + } else if (local_stream) { + max_rx_offset = 0; + max_tx_offset = conn->remote.transport_params->initial_max_stream_data_uni; + } else { + max_rx_offset = conn->local.transport_params.initial_max_stream_data_uni; + max_tx_offset = 0; + } + + ngtcp2_strm_init(strm, stream_id, NGTCP2_STRM_FLAG_NONE, max_rx_offset, + max_tx_offset, stream_user_data, &conn->frc_objalloc, + conn->mem); + + rv = + ngtcp2_map_insert(&conn->strms, (ngtcp2_map_key_type)strm->stream_id, strm); + if (rv != 0) { + assert(rv != NGTCP2_ERR_INVALID_ARGUMENT); + goto fail; + } + + return 0; + +fail: + ngtcp2_strm_free(strm); + return rv; +} + +/* + * conn_emit_pending_stream_data passes buffered ordered stream data + * to the application. |rx_offset| is the first offset to deliver to + * the application. This function assumes that the data up to + * |rx_offset| has been delivered already. This function only passes + * the ordered data without any gap. If there is a gap, it stops + * providing the data to the application, and returns. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_CALLBACK_FAILURE + * User callback failed. + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int conn_emit_pending_stream_data(ngtcp2_conn *conn, ngtcp2_strm *strm, + uint64_t rx_offset) { + size_t datalen; + const uint8_t *data; + int rv; + uint64_t offset; + uint32_t sdflags; + int handshake_completed = conn_is_tls_handshake_completed(conn); + + if (!strm->rx.rob) { + return 0; + } + + for (;;) { + /* Stop calling callback if application has called + ngtcp2_conn_shutdown_stream_read() inside the callback. + Because it doubly counts connection window. */ + if (strm->flags & NGTCP2_STRM_FLAG_STOP_SENDING) { + return 0; + } + + datalen = ngtcp2_rob_data_at(strm->rx.rob, &data, rx_offset); + if (datalen == 0) { + assert(rx_offset == ngtcp2_strm_rx_offset(strm)); + return 0; + } + + offset = rx_offset; + rx_offset += datalen; + + sdflags = NGTCP2_STREAM_DATA_FLAG_NONE; + if ((strm->flags & NGTCP2_STRM_FLAG_SHUT_RD) && + rx_offset == strm->rx.last_offset) { + sdflags |= NGTCP2_STREAM_DATA_FLAG_FIN; + } + if (!handshake_completed) { + sdflags |= NGTCP2_STREAM_DATA_FLAG_0RTT; + } + + rv = conn_call_recv_stream_data(conn, strm, sdflags, offset, data, datalen); + if (rv != 0) { + return rv; + } + + /* ngtcp2_conn_shutdown_stream_read from a callback will free + strm->rx.rob. */ + if (!strm->rx.rob) { + return 0; + } + + ngtcp2_rob_pop(strm->rx.rob, rx_offset - datalen, datalen); + } +} + +/* + * conn_recv_crypto is called when CRYPTO frame |fr| is received. + * |rx_offset_base| is the offset in the entire TLS handshake stream. + * fr->offset specifies the offset in each encryption level. + * |max_rx_offset| is, if it is nonzero, the maximum offset in the + * entire TLS handshake stream that |fr| can carry. + * |encryption_level| is the encryption level where this data is + * received. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_PROTO + * CRYPTO frame has invalid offset. + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CRYPTO + * TLS stack reported error. + * NGTCP2_ERR_FRAME_ENCODING + * The end offset exceeds the maximum value. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static int conn_recv_crypto(ngtcp2_conn *conn, + ngtcp2_encryption_level encryption_level, + ngtcp2_strm *crypto, const ngtcp2_stream *fr) { + uint64_t fr_end_offset; + uint64_t rx_offset; + int rv; + + if (fr->datacnt == 0) { + return 0; + } + + fr_end_offset = fr->offset + fr->data[0].len; + + if (NGTCP2_MAX_VARINT < fr_end_offset) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + rx_offset = ngtcp2_strm_rx_offset(crypto); + + if (fr_end_offset <= rx_offset) { + if (conn->server && + !(conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_EARLY_RETRANSMIT) && + encryption_level == NGTCP2_ENCRYPTION_LEVEL_INITIAL) { + /* https://datatracker.ietf.org/doc/html/rfc9002#section-6.2.3: + Speeding Up Handshake Completion + + When a server receives an Initial packet containing duplicate + CRYPTO data, it can assume the client did not receive all of + the server's CRYPTO data sent in Initial packets, or the + client's estimated RTT is too small. ... To speed up + handshake completion under these conditions, an endpoint MAY + send a packet containing unacknowledged CRYPTO data earlier + than the PTO expiry, subject to address validation limits; + ... */ + conn->flags |= NGTCP2_CONN_FLAG_HANDSHAKE_EARLY_RETRANSMIT; + conn->in_pktns->rtb.probe_pkt_left = 1; + conn->hs_pktns->rtb.probe_pkt_left = 1; + } + return 0; + } + + crypto->rx.last_offset = + ngtcp2_max_uint64(crypto->rx.last_offset, fr_end_offset); + + /* TODO Before dispatching incoming data to TLS stack, make sure + that previous data in previous encryption level has been + completely sent to TLS stack. Usually, if data is left, it is an + error because key is generated after consuming all data in the + previous encryption level. */ + if (fr->offset <= rx_offset) { + size_t ncut = (size_t)(rx_offset - fr->offset); + const uint8_t *data = fr->data[0].base + ncut; + size_t datalen = fr->data[0].len - ncut; + uint64_t offset = rx_offset; + + rx_offset += datalen; + ngtcp2_strm_update_rx_offset(crypto, rx_offset); + + rv = + conn_call_recv_crypto_data(conn, encryption_level, offset, data, datalen); + if (rv != 0) { + return rv; + } + + rv = + conn_emit_pending_crypto_data(conn, encryption_level, crypto, rx_offset); + if (rv != 0) { + return rv; + } + + return 0; + } + + if (fr_end_offset - rx_offset > NGTCP2_MAX_REORDERED_CRYPTO_DATA) { + return NGTCP2_ERR_CRYPTO_BUFFER_EXCEEDED; + } + + return ngtcp2_strm_recv_reordering(crypto, fr->data[0].base, fr->data[0].len, + fr->offset); +} + +/* + * conn_max_data_violated returns nonzero if receiving |datalen| + * violates connection flow control on local endpoint. + */ +static int conn_max_data_violated(ngtcp2_conn *conn, uint64_t datalen) { + return conn->rx.max_offset - conn->rx.offset < datalen; +} + +/* + * conn_recv_stream is called when STREAM frame |fr| is received. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_STREAM_STATE + * STREAM frame is received for a local stream which is not + * initiated; or STREAM frame is received for a local + * unidirectional stream + * NGTCP2_ERR_STREAM_LIMIT + * STREAM frame has remote stream ID which is strictly greater + * than the allowed limit. + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + * NGTCP2_ERR_FLOW_CONTROL + * Flow control limit is violated; or the end offset of stream + * data is beyond the NGTCP2_MAX_VARINT. + * NGTCP2_ERR_FINAL_SIZE + * STREAM frame has strictly larger end offset than it is + * permitted. + */ +static int conn_recv_stream(ngtcp2_conn *conn, const ngtcp2_stream *fr) { + int rv; + ngtcp2_strm *strm; + ngtcp2_idtr *idtr; + uint64_t rx_offset, fr_end_offset; + int local_stream; + int bidi; + uint64_t datalen = ngtcp2_vec_len(fr->data, fr->datacnt); + uint32_t sdflags = NGTCP2_STREAM_DATA_FLAG_NONE; + + local_stream = conn_local_stream(conn, fr->stream_id); + bidi = bidi_stream(fr->stream_id); + + if (bidi) { + if (local_stream) { + if (conn->local.bidi.next_stream_id <= fr->stream_id) { + return NGTCP2_ERR_STREAM_STATE; + } + } else if (conn->remote.bidi.max_streams < + ngtcp2_ord_stream_id(fr->stream_id)) { + return NGTCP2_ERR_STREAM_LIMIT; + } + + idtr = &conn->remote.bidi.idtr; + } else { + if (local_stream) { + return NGTCP2_ERR_STREAM_STATE; + } + if (conn->remote.uni.max_streams < ngtcp2_ord_stream_id(fr->stream_id)) { + return NGTCP2_ERR_STREAM_LIMIT; + } + + idtr = &conn->remote.uni.idtr; + } + + if (NGTCP2_MAX_VARINT - datalen < fr->offset) { + return NGTCP2_ERR_FLOW_CONTROL; + } + + strm = ngtcp2_conn_find_stream(conn, fr->stream_id); + if (strm == NULL) { + if (local_stream) { + /* TODO The stream has been closed. This should be responded + with RESET_STREAM, or simply ignored. */ + return 0; + } + + rv = ngtcp2_idtr_open(idtr, fr->stream_id); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + assert(rv == NGTCP2_ERR_STREAM_IN_USE); + /* TODO The stream has been closed. This should be responded + with RESET_STREAM, or simply ignored. */ + return 0; + } + + strm = ngtcp2_objalloc_strm_get(&conn->strm_objalloc); + if (strm == NULL) { + return NGTCP2_ERR_NOMEM; + } + + rv = ngtcp2_conn_init_stream(conn, strm, fr->stream_id, NULL); + if (rv != 0) { + ngtcp2_objalloc_strm_release(&conn->strm_objalloc, strm); + return rv; + } + + if (!bidi) { + ngtcp2_strm_shutdown(strm, NGTCP2_STRM_FLAG_SHUT_WR); + strm->flags |= NGTCP2_STRM_FLAG_FIN_ACKED; + } + + rv = conn_call_stream_open(conn, strm); + if (rv != 0) { + return rv; + } + } + + fr_end_offset = fr->offset + datalen; + + if (strm->rx.max_offset < fr_end_offset) { + return NGTCP2_ERR_FLOW_CONTROL; + } + + if (strm->rx.last_offset < fr_end_offset) { + uint64_t len = fr_end_offset - strm->rx.last_offset; + + if (conn_max_data_violated(conn, len)) { + return NGTCP2_ERR_FLOW_CONTROL; + } + + conn->rx.offset += len; + + if (strm->flags & NGTCP2_STRM_FLAG_STOP_SENDING) { + ngtcp2_conn_extend_max_offset(conn, len); + } + } + + rx_offset = ngtcp2_strm_rx_offset(strm); + + if (fr->fin) { + if (strm->flags & NGTCP2_STRM_FLAG_SHUT_RD) { + if (strm->rx.last_offset != fr_end_offset) { + return NGTCP2_ERR_FINAL_SIZE; + } + + if (strm->flags & NGTCP2_STRM_FLAG_RESET_STREAM_RECVED) { + return 0; + } + + if (rx_offset == fr_end_offset) { + return 0; + } + } else if (strm->rx.last_offset > fr_end_offset) { + return NGTCP2_ERR_FINAL_SIZE; + } else { + strm->rx.last_offset = fr_end_offset; + + ngtcp2_strm_shutdown(strm, NGTCP2_STRM_FLAG_SHUT_RD); + } + } else { + if ((strm->flags & NGTCP2_STRM_FLAG_SHUT_RD) && + strm->rx.last_offset < fr_end_offset) { + return NGTCP2_ERR_FINAL_SIZE; + } + + strm->rx.last_offset = + ngtcp2_max_uint64(strm->rx.last_offset, fr_end_offset); + + if (fr_end_offset <= rx_offset) { + return 0; + } + + if (strm->flags & NGTCP2_STRM_FLAG_RESET_STREAM_RECVED) { + return 0; + } + } + + if (fr->offset <= rx_offset) { + size_t ncut = (size_t)(rx_offset - fr->offset); + uint64_t offset = rx_offset; + const uint8_t *data; + int fin; + + if (fr->datacnt) { + data = fr->data[0].base + ncut; + datalen -= ncut; + + rx_offset += datalen; + ngtcp2_strm_update_rx_offset(strm, rx_offset); + } else { + data = NULL; + datalen = 0; + } + + if (strm->flags & NGTCP2_STRM_FLAG_STOP_SENDING) { + return ngtcp2_conn_close_stream_if_shut_rdwr(conn, strm); + } + + fin = (strm->flags & NGTCP2_STRM_FLAG_SHUT_RD) && + rx_offset == strm->rx.last_offset; + + if (fin || datalen) { + if (fin) { + sdflags |= NGTCP2_STREAM_DATA_FLAG_FIN; + } + if (!conn_is_tls_handshake_completed(conn)) { + sdflags |= NGTCP2_STREAM_DATA_FLAG_0RTT; + } + rv = conn_call_recv_stream_data(conn, strm, sdflags, offset, data, + (size_t)datalen); + if (rv != 0) { + return rv; + } + + rv = conn_emit_pending_stream_data(conn, strm, rx_offset); + if (rv != 0) { + return rv; + } + } + } else if (fr->datacnt && !(strm->flags & NGTCP2_STRM_FLAG_STOP_SENDING)) { + rv = ngtcp2_strm_recv_reordering(strm, fr->data[0].base, fr->data[0].len, + fr->offset); + if (rv != 0) { + return rv; + } + } + return ngtcp2_conn_close_stream_if_shut_rdwr(conn, strm); +} + +/* + * conn_reset_stream adds RESET_STREAM frame to the transmission + * queue. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int conn_reset_stream(ngtcp2_conn *conn, ngtcp2_strm *strm, + uint64_t app_error_code) { + strm->flags |= NGTCP2_STRM_FLAG_SEND_RESET_STREAM; + strm->tx.reset_stream_app_error_code = app_error_code; + + if (ngtcp2_strm_is_tx_queued(strm)) { + return 0; + } + + strm->cycle = conn_tx_strmq_first_cycle(conn); + + return ngtcp2_conn_tx_strmq_push(conn, strm); +} + +/* + * conn_stop_sending adds STOP_SENDING frame to the transmission + * queue. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int conn_stop_sending(ngtcp2_conn *conn, ngtcp2_strm *strm, + uint64_t app_error_code) { + strm->flags |= NGTCP2_STRM_FLAG_SEND_STOP_SENDING; + strm->tx.stop_sending_app_error_code = app_error_code; + + if (ngtcp2_strm_is_tx_queued(strm)) { + return 0; + } + + strm->cycle = conn_tx_strmq_first_cycle(conn); + + return ngtcp2_conn_tx_strmq_push(conn, strm); +} + +/* + * handle_max_remote_streams_extension extends + * |*punsent_max_remote_streams| by |n| if a condition allows it. + */ +static void +handle_max_remote_streams_extension(uint64_t *punsent_max_remote_streams, + size_t n) { + if ( +#if SIZE_MAX > UINT32_MAX + NGTCP2_MAX_STREAMS < n || +#endif /* SIZE_MAX > UINT32_MAX */ + *punsent_max_remote_streams > (uint64_t)(NGTCP2_MAX_STREAMS - n)) { + *punsent_max_remote_streams = NGTCP2_MAX_STREAMS; + } else { + *punsent_max_remote_streams += n; + } +} + +/* + * conn_recv_reset_stream is called when RESET_STREAM |fr| is + * received. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_STREAM_STATE + * RESET_STREAM frame is received to the local stream which is not + * initiated. + * NGTCP2_ERR_STREAM_LIMIT + * RESET_STREAM frame has remote stream ID which is strictly + * greater than the allowed limit. + * NGTCP2_ERR_PROTO + * RESET_STREAM frame is received to the local unidirectional + * stream + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + * NGTCP2_ERR_FLOW_CONTROL + * Flow control limit is violated; or the final size is beyond the + * NGTCP2_MAX_VARINT. + * NGTCP2_ERR_FINAL_SIZE + * The final offset is strictly larger than it is permitted. + */ +static int conn_recv_reset_stream(ngtcp2_conn *conn, + const ngtcp2_reset_stream *fr) { + ngtcp2_strm *strm; + int local_stream = conn_local_stream(conn, fr->stream_id); + int bidi = bidi_stream(fr->stream_id); + uint64_t datalen; + ngtcp2_idtr *idtr; + int rv; + + /* TODO share this piece of code */ + if (bidi) { + if (local_stream) { + if (conn->local.bidi.next_stream_id <= fr->stream_id) { + return NGTCP2_ERR_STREAM_STATE; + } + } else if (conn->remote.bidi.max_streams < + ngtcp2_ord_stream_id(fr->stream_id)) { + return NGTCP2_ERR_STREAM_LIMIT; + } + + idtr = &conn->remote.bidi.idtr; + } else { + if (local_stream) { + return NGTCP2_ERR_PROTO; + } + if (conn->remote.uni.max_streams < ngtcp2_ord_stream_id(fr->stream_id)) { + return NGTCP2_ERR_STREAM_LIMIT; + } + + idtr = &conn->remote.uni.idtr; + } + + if (NGTCP2_MAX_VARINT < fr->final_size) { + return NGTCP2_ERR_FLOW_CONTROL; + } + + strm = ngtcp2_conn_find_stream(conn, fr->stream_id); + if (strm == NULL) { + if (local_stream) { + return 0; + } + + rv = ngtcp2_idtr_open(idtr, fr->stream_id); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + assert(rv == NGTCP2_ERR_STREAM_IN_USE); + return 0; + } + + if (conn_initial_stream_rx_offset(conn, fr->stream_id) < fr->final_size || + conn_max_data_violated(conn, fr->final_size)) { + return NGTCP2_ERR_FLOW_CONTROL; + } + + /* Stream is reset before we create ngtcp2_strm object. */ + strm = ngtcp2_objalloc_strm_get(&conn->strm_objalloc); + if (strm == NULL) { + return NGTCP2_ERR_NOMEM; + } + rv = ngtcp2_conn_init_stream(conn, strm, fr->stream_id, NULL); + if (rv != 0) { + ngtcp2_objalloc_strm_release(&conn->strm_objalloc, strm); + return rv; + } + + rv = conn_call_stream_open(conn, strm); + if (rv != 0) { + return rv; + } + } + + if ((strm->flags & NGTCP2_STRM_FLAG_SHUT_RD)) { + if (strm->rx.last_offset != fr->final_size) { + return NGTCP2_ERR_FINAL_SIZE; + } + } else if (strm->rx.last_offset > fr->final_size) { + return NGTCP2_ERR_FINAL_SIZE; + } + + if (strm->flags & NGTCP2_STRM_FLAG_RESET_STREAM_RECVED) { + return 0; + } + + if (strm->rx.max_offset < fr->final_size) { + return NGTCP2_ERR_FLOW_CONTROL; + } + + datalen = fr->final_size - strm->rx.last_offset; + + if (conn_max_data_violated(conn, datalen)) { + return NGTCP2_ERR_FLOW_CONTROL; + } + + rv = conn_call_stream_reset(conn, fr->stream_id, fr->final_size, + fr->app_error_code, strm->stream_user_data); + if (rv != 0) { + return rv; + } + + /* Extend connection flow control window for the amount of data + which are not passed to application. */ + if (!(strm->flags & NGTCP2_STRM_FLAG_STOP_SENDING)) { + ngtcp2_conn_extend_max_offset(conn, strm->rx.last_offset - + ngtcp2_strm_rx_offset(strm)); + } + + conn->rx.offset += datalen; + ngtcp2_conn_extend_max_offset(conn, datalen); + + strm->rx.last_offset = fr->final_size; + strm->flags |= + NGTCP2_STRM_FLAG_SHUT_RD | NGTCP2_STRM_FLAG_RESET_STREAM_RECVED; + + ngtcp2_strm_set_app_error_code(strm, fr->app_error_code); + + return ngtcp2_conn_close_stream_if_shut_rdwr(conn, strm); +} + +/* + * conn_recv_stop_sending is called when STOP_SENDING |fr| is received. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_STREAM_STATE + * STOP_SENDING frame is received for a local stream which is not + * initiated; or STOP_SENDING frame is received for a local + * unidirectional stream. + * NGTCP2_ERR_STREAM_LIMIT + * STOP_SENDING frame has remote stream ID which is strictly + * greater than the allowed limit. + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static int conn_recv_stop_sending(ngtcp2_conn *conn, + const ngtcp2_stop_sending *fr) { + int rv; + ngtcp2_strm *strm; + ngtcp2_idtr *idtr; + int local_stream = conn_local_stream(conn, fr->stream_id); + int bidi = bidi_stream(fr->stream_id); + + if (bidi) { + if (local_stream) { + if (conn->local.bidi.next_stream_id <= fr->stream_id) { + return NGTCP2_ERR_STREAM_STATE; + } + } else if (conn->remote.bidi.max_streams < + ngtcp2_ord_stream_id(fr->stream_id)) { + return NGTCP2_ERR_STREAM_LIMIT; + } + + idtr = &conn->remote.bidi.idtr; + } else { + if (!local_stream || conn->local.uni.next_stream_id <= fr->stream_id) { + return NGTCP2_ERR_STREAM_STATE; + } + + idtr = &conn->remote.uni.idtr; + } + + strm = ngtcp2_conn_find_stream(conn, fr->stream_id); + if (strm == NULL) { + if (local_stream) { + return 0; + } + rv = ngtcp2_idtr_open(idtr, fr->stream_id); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + assert(rv == NGTCP2_ERR_STREAM_IN_USE); + return 0; + } + + /* STOP_SENDING frame is received before we create ngtcp2_strm + object. */ + strm = ngtcp2_objalloc_strm_get(&conn->strm_objalloc); + if (strm == NULL) { + return NGTCP2_ERR_NOMEM; + } + rv = ngtcp2_conn_init_stream(conn, strm, fr->stream_id, NULL); + if (rv != 0) { + ngtcp2_objalloc_strm_release(&conn->strm_objalloc, strm); + return rv; + } + + rv = conn_call_stream_open(conn, strm); + if (rv != 0) { + return rv; + } + } + + if (strm->flags & NGTCP2_STRM_FLAG_STOP_SENDING_RECVED) { + return 0; + } + + ngtcp2_strm_set_app_error_code(strm, fr->app_error_code); + + /* No RESET_STREAM is required if we have sent FIN and all data have + been acknowledged. */ + if (!ngtcp2_strm_is_all_tx_data_fin_acked(strm) && + !(strm->flags & NGTCP2_STRM_FLAG_RESET_STREAM)) { + strm->flags |= NGTCP2_STRM_FLAG_RESET_STREAM; + + rv = conn_reset_stream(conn, strm, fr->app_error_code); + if (rv != 0) { + return rv; + } + } + + strm->flags |= + NGTCP2_STRM_FLAG_SHUT_WR | NGTCP2_STRM_FLAG_STOP_SENDING_RECVED; + + ngtcp2_strm_streamfrq_clear(strm); + + return ngtcp2_conn_close_stream_if_shut_rdwr(conn, strm); +} + +/* + * check_stateless_reset returns nonzero if Stateless Reset |sr| + * coming via |path| is valid against |dcid|. + */ +static int check_stateless_reset(const ngtcp2_dcid *dcid, + const ngtcp2_path *path, + const ngtcp2_pkt_stateless_reset *sr) { + return ngtcp2_path_eq(&dcid->ps.path, path) && + ngtcp2_dcid_verify_stateless_reset_token( + dcid, sr->stateless_reset_token) == 0; +} + +/* + * conn_on_stateless_reset decodes Stateless Reset from the buffer + * pointed by |payload| whose length is |payloadlen|. |payload| + * should start after first byte of packet. + * + * If Stateless Reset is decoded, and the Stateless Reset Token is + * validated, the connection is closed. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_INVALID_ARGUMENT + * Could not decode Stateless Reset; or Stateless Reset Token does + * not match; or No stateless reset token is available. + * NGTCP2_ERR_CALLBACK_FAILURE + * User callback failed. + */ +static int conn_on_stateless_reset(ngtcp2_conn *conn, const ngtcp2_path *path, + const uint8_t *payload, size_t payloadlen) { + int rv = 1; + ngtcp2_pv *pv = conn->pv; + ngtcp2_dcid *dcid; + ngtcp2_pkt_stateless_reset sr; + size_t len, i; + + rv = ngtcp2_pkt_decode_stateless_reset(&sr, payload, payloadlen); + if (rv != 0) { + return rv; + } + + if (!check_stateless_reset(&conn->dcid.current, path, &sr) && + (!pv || (!check_stateless_reset(&pv->dcid, path, &sr) && + (!(pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) || + !check_stateless_reset(&pv->fallback_dcid, path, &sr))))) { + len = ngtcp2_ringbuf_len(&conn->dcid.retired.rb); + for (i = 0; i < len; ++i) { + dcid = ngtcp2_ringbuf_get(&conn->dcid.retired.rb, i); + if (check_stateless_reset(dcid, path, &sr)) { + break; + } + } + + if (i == len) { + len = ngtcp2_ringbuf_len(&conn->dcid.bound.rb); + for (i = 0; i < len; ++i) { + dcid = ngtcp2_ringbuf_get(&conn->dcid.bound.rb, i); + if (check_stateless_reset(dcid, path, &sr)) { + break; + } + } + + if (i == len) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + } + } + + conn->state = NGTCP2_CS_DRAINING; + + ngtcp2_log_rx_sr(&conn->log, &sr); + + ngtcp2_qlog_stateless_reset_pkt_received(&conn->qlog, &sr); + + return conn_call_recv_stateless_reset(conn, &sr); +} + +/* + * conn_recv_max_streams processes the incoming MAX_STREAMS frame + * |fr|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_CALLBACK_FAILURE + * User callback failed. + * NGTCP2_ERR_FRAME_ENCODING + * The maximum streams field exceeds the maximum value. + */ +static int conn_recv_max_streams(ngtcp2_conn *conn, + const ngtcp2_max_streams *fr) { + uint64_t n; + + if (fr->max_streams > NGTCP2_MAX_STREAMS) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + n = ngtcp2_min_uint64(fr->max_streams, NGTCP2_MAX_STREAMS); + + if (fr->type == NGTCP2_FRAME_MAX_STREAMS_BIDI) { + if (conn->local.bidi.max_streams < n) { + conn->local.bidi.max_streams = n; + return conn_call_extend_max_local_streams_bidi(conn, n); + } + return 0; + } + + if (conn->local.uni.max_streams < n) { + conn->local.uni.max_streams = n; + return conn_call_extend_max_local_streams_uni(conn, n); + } + return 0; +} + +static int conn_retire_dcid_prior_to(ngtcp2_conn *conn, ngtcp2_ringbuf *rb, + uint64_t retire_prior_to) { + size_t i; + ngtcp2_dcid *dcid, *last; + int rv; + + for (i = 0; i < ngtcp2_ringbuf_len(rb);) { + dcid = ngtcp2_ringbuf_get(rb, i); + if (dcid->seq >= retire_prior_to) { + ++i; + continue; + } + + rv = conn_retire_dcid_seq(conn, dcid->seq); + if (rv != 0) { + return rv; + } + + if (i == 0) { + ngtcp2_ringbuf_pop_front(rb); + continue; + } + + if (i == ngtcp2_ringbuf_len(rb) - 1) { + ngtcp2_ringbuf_pop_back(rb); + break; + } + + last = ngtcp2_ringbuf_get(rb, ngtcp2_ringbuf_len(rb) - 1); + ngtcp2_dcid_copy(dcid, last); + ngtcp2_ringbuf_pop_back(rb); + } + + return 0; +} + +/* + * conn_recv_new_connection_id processes the incoming + * NEW_CONNECTION_ID frame |fr|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_PROTO + * |fr| has the duplicated sequence number with different CID or + * token; or DCID is zero-length. + */ +static int conn_recv_new_connection_id(ngtcp2_conn *conn, + const ngtcp2_new_connection_id *fr) { + size_t i, len; + ngtcp2_dcid *dcid; + ngtcp2_pv *pv = conn->pv; + int rv; + int found = 0; + size_t extra_dcid = 0; + + if (conn->dcid.current.cid.datalen == 0) { + return NGTCP2_ERR_PROTO; + } + + if (fr->retire_prior_to > fr->seq) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + rv = ngtcp2_dcid_verify_uniqueness(&conn->dcid.current, fr->seq, &fr->cid, + fr->stateless_reset_token); + if (rv != 0) { + return rv; + } + if (ngtcp2_cid_eq(&conn->dcid.current.cid, &fr->cid)) { + found = 1; + } + + if (pv) { + rv = ngtcp2_dcid_verify_uniqueness(&pv->dcid, fr->seq, &fr->cid, + fr->stateless_reset_token); + if (rv != 0) { + return rv; + } + if (ngtcp2_cid_eq(&pv->dcid.cid, &fr->cid)) { + found = 1; + } + } + + len = ngtcp2_ringbuf_len(&conn->dcid.bound.rb); + + for (i = 0; i < len; ++i) { + dcid = ngtcp2_ringbuf_get(&conn->dcid.bound.rb, i); + rv = ngtcp2_dcid_verify_uniqueness(dcid, fr->seq, &fr->cid, + fr->stateless_reset_token); + if (rv != 0) { + return NGTCP2_ERR_PROTO; + } + if (ngtcp2_cid_eq(&dcid->cid, &fr->cid)) { + found = 1; + } + } + + len = ngtcp2_ringbuf_len(&conn->dcid.unused.rb); + + for (i = 0; i < len; ++i) { + dcid = ngtcp2_ringbuf_get(&conn->dcid.unused.rb, i); + rv = ngtcp2_dcid_verify_uniqueness(dcid, fr->seq, &fr->cid, + fr->stateless_reset_token); + if (rv != 0) { + return NGTCP2_ERR_PROTO; + } + if (ngtcp2_cid_eq(&dcid->cid, &fr->cid)) { + found = 1; + } + } + + if (conn->dcid.retire_prior_to < fr->retire_prior_to) { + conn->dcid.retire_prior_to = fr->retire_prior_to; + + rv = conn_retire_dcid_prior_to(conn, &conn->dcid.bound.rb, + fr->retire_prior_to); + if (rv != 0) { + return rv; + } + + rv = conn_retire_dcid_prior_to(conn, &conn->dcid.unused.rb, + conn->dcid.retire_prior_to); + if (rv != 0) { + return rv; + } + } else if (fr->seq < conn->dcid.retire_prior_to) { + /* If packets are reordered, we might have retire_prior_to which + is larger than fr->seq. + + A malicious peer might send crafted NEW_CONNECTION_ID to force + local endpoint to create lots of RETIRE_CONNECTION_ID frames. + For example, a peer might send seq = 50000 and retire_prior_to + = 50000. Then send NEW_CONNECTION_ID frames with seq < + 50000. */ + return conn_retire_dcid_seq(conn, fr->seq); + } + + if (found) { + return 0; + } + + if (ngtcp2_gaptr_is_pushed(&conn->dcid.seqgap, fr->seq, 1)) { + return 0; + } + + rv = ngtcp2_gaptr_push(&conn->dcid.seqgap, fr->seq, 1); + if (rv != 0) { + return rv; + } + + if (ngtcp2_ksl_len(&conn->dcid.seqgap.gap) > 32) { + ngtcp2_gaptr_drop_first_gap(&conn->dcid.seqgap); + } + + len = ngtcp2_ringbuf_len(&conn->dcid.unused.rb); + + if (conn->dcid.current.seq >= conn->dcid.retire_prior_to) { + ++extra_dcid; + } + if (pv) { + if (pv->dcid.seq != conn->dcid.current.seq && + pv->dcid.seq >= conn->dcid.retire_prior_to) { + ++extra_dcid; + } + if ((pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) && + pv->fallback_dcid.seq != conn->dcid.current.seq && + pv->fallback_dcid.seq >= conn->dcid.retire_prior_to) { + ++extra_dcid; + } + } + + if (conn->local.transport_params.active_connection_id_limit <= + len + extra_dcid) { + return NGTCP2_ERR_CONNECTION_ID_LIMIT; + } + + if (len >= NGTCP2_MAX_DCID_POOL_SIZE) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, "too many connection ID"); + return 0; + } + + dcid = ngtcp2_ringbuf_push_back(&conn->dcid.unused.rb); + ngtcp2_dcid_init(dcid, fr->seq, &fr->cid, fr->stateless_reset_token); + + return 0; +} + +/* + * conn_post_process_recv_new_connection_id handles retirement request + * of active DCIDs. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static int conn_post_process_recv_new_connection_id(ngtcp2_conn *conn, + ngtcp2_tstamp ts) { + ngtcp2_pv *pv = conn->pv; + ngtcp2_dcid *dcid; + int rv; + + if (conn->dcid.current.seq < conn->dcid.retire_prior_to) { + if (ngtcp2_ringbuf_len(&conn->dcid.unused.rb) == 0) { + return 0; + } + + rv = conn_retire_dcid(conn, &conn->dcid.current, ts); + if (rv != 0) { + return rv; + } + + dcid = ngtcp2_ringbuf_get(&conn->dcid.unused.rb, 0); + if (pv) { + if (conn->dcid.current.seq == pv->dcid.seq) { + ngtcp2_dcid_copy_cid_token(&pv->dcid, dcid); + } + if ((pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) && + conn->dcid.current.seq == pv->fallback_dcid.seq) { + ngtcp2_dcid_copy_cid_token(&pv->fallback_dcid, dcid); + } + } + + ngtcp2_dcid_copy_cid_token(&conn->dcid.current, dcid); + ngtcp2_ringbuf_pop_front(&conn->dcid.unused.rb); + + rv = conn_call_activate_dcid(conn, &conn->dcid.current); + if (rv != 0) { + return rv; + } + } + + if (pv) { + if (pv->dcid.seq < conn->dcid.retire_prior_to) { + if (ngtcp2_ringbuf_len(&conn->dcid.unused.rb)) { + rv = conn_retire_dcid(conn, &pv->dcid, ts); + if (rv != 0) { + return rv; + } + + dcid = ngtcp2_ringbuf_get(&conn->dcid.unused.rb, 0); + + if ((pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) && + pv->dcid.seq == pv->fallback_dcid.seq) { + ngtcp2_dcid_copy_cid_token(&pv->fallback_dcid, dcid); + } + + ngtcp2_dcid_copy_cid_token(&pv->dcid, dcid); + ngtcp2_ringbuf_pop_front(&conn->dcid.unused.rb); + + rv = conn_call_activate_dcid(conn, &pv->dcid); + if (rv != 0) { + return rv; + } + } else { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PTV, + "path migration is aborted because connection ID is" + "retired and no unused connection ID is available"); + + return conn_abort_pv(conn, ts); + } + } + if ((pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) && + pv->fallback_dcid.seq < conn->dcid.retire_prior_to) { + if (ngtcp2_ringbuf_len(&conn->dcid.unused.rb)) { + rv = conn_retire_dcid(conn, &pv->fallback_dcid, ts); + if (rv != 0) { + return rv; + } + + dcid = ngtcp2_ringbuf_get(&conn->dcid.unused.rb, 0); + ngtcp2_dcid_copy_cid_token(&pv->fallback_dcid, dcid); + ngtcp2_ringbuf_pop_front(&conn->dcid.unused.rb); + + rv = conn_call_activate_dcid(conn, &pv->fallback_dcid); + if (rv != 0) { + return rv; + } + } else { + /* Now we have no fallback dcid. */ + return conn_abort_pv(conn, ts); + } + } + } + + return 0; +} + +/* + * conn_recv_retire_connection_id processes the incoming + * RETIRE_CONNECTION_ID frame |fr|. |hd| is a packet header which + * |fr| is included. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_PROTO + * SCID is zero-length. + * NGTCP2_ERR_FRAME_ENCODING + * Attempt to retire CID which is used as DCID to send this frame. + */ +static int conn_recv_retire_connection_id(ngtcp2_conn *conn, + const ngtcp2_pkt_hd *hd, + const ngtcp2_retire_connection_id *fr, + ngtcp2_tstamp ts) { + ngtcp2_ksl_it it; + ngtcp2_scid *scid; + + if (conn->oscid.datalen == 0 || conn->scid.last_seq < fr->seq) { + return NGTCP2_ERR_PROTO; + } + + for (it = ngtcp2_ksl_begin(&conn->scid.set); !ngtcp2_ksl_it_end(&it); + ngtcp2_ksl_it_next(&it)) { + scid = ngtcp2_ksl_it_get(&it); + if (scid->seq == fr->seq) { + if (ngtcp2_cid_eq(&scid->cid, &hd->dcid)) { + return NGTCP2_ERR_PROTO; + } + + if (!(scid->flags & NGTCP2_SCID_FLAG_RETIRED)) { + scid->flags |= NGTCP2_SCID_FLAG_RETIRED; + ++conn->scid.num_retired; + } + + if (scid->pe.index != NGTCP2_PQ_BAD_INDEX) { + ngtcp2_pq_remove(&conn->scid.used, &scid->pe); + scid->pe.index = NGTCP2_PQ_BAD_INDEX; + } + + scid->retired_ts = ts; + + return ngtcp2_pq_push(&conn->scid.used, &scid->pe); + } + } + + return 0; +} + +/* + * conn_recv_new_token processes the incoming NEW_TOKEN frame |fr|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Token is empty + * NGTCP2_ERR_PROTO: + * Server received NEW_TOKEN. + */ +static int conn_recv_new_token(ngtcp2_conn *conn, const ngtcp2_new_token *fr) { + if (conn->server) { + return NGTCP2_ERR_PROTO; + } + + if (fr->tokenlen == 0) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + return conn_call_recv_new_token(conn, fr->token, fr->tokenlen); +} + +/* + * conn_recv_streams_blocked_bidi processes the incoming + * STREAMS_BLOCKED (0x16). + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Maximum Streams is larger than advertised value. + */ +static int conn_recv_streams_blocked_bidi(ngtcp2_conn *conn, + ngtcp2_streams_blocked *fr) { + if (fr->max_streams > conn->remote.bidi.max_streams) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + return 0; +} + +/* + * conn_recv_streams_blocked_uni processes the incoming + * STREAMS_BLOCKED (0x17). + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Maximum Streams is larger than advertised value. + */ +static int conn_recv_streams_blocked_uni(ngtcp2_conn *conn, + ngtcp2_streams_blocked *fr) { + if (fr->max_streams > conn->remote.uni.max_streams) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + return 0; +} + +/* + * conn_recv_stream_data_blocked processes the incoming + * STREAM_DATA_BLOCKED frame |fr|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_STREAM_STATE + * STREAM_DATA_BLOCKED is received for a local stream which is not + * initiated; or it is received for a local unidirectional stream. + * NGTCP2_ERR_STREAM_LIMIT + * STREAM_DATA_BLOCKED has remote stream ID which is strictly + * greater than the allowed limit. + * NGTCP2_ERR_FLOW_CONTROL + * STREAM_DATA_BLOCKED frame violates flow control limit. + * NGTCP2_ERR_FINAL_SIZE + * The offset is strictly larger than it is permitted. + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static int conn_recv_stream_data_blocked(ngtcp2_conn *conn, + ngtcp2_stream_data_blocked *fr) { + int rv; + ngtcp2_strm *strm; + ngtcp2_idtr *idtr; + int local_stream = conn_local_stream(conn, fr->stream_id); + int bidi = bidi_stream(fr->stream_id); + uint64_t datalen; + + if (bidi) { + if (local_stream) { + if (conn->local.bidi.next_stream_id <= fr->stream_id) { + return NGTCP2_ERR_STREAM_STATE; + } + } else if (conn->remote.bidi.max_streams < + ngtcp2_ord_stream_id(fr->stream_id)) { + return NGTCP2_ERR_STREAM_LIMIT; + } + + idtr = &conn->remote.bidi.idtr; + } else { + if (local_stream) { + return NGTCP2_ERR_STREAM_STATE; + } + if (conn->remote.uni.max_streams < ngtcp2_ord_stream_id(fr->stream_id)) { + return NGTCP2_ERR_STREAM_LIMIT; + } + + idtr = &conn->remote.uni.idtr; + } + + strm = ngtcp2_conn_find_stream(conn, fr->stream_id); + if (strm == NULL) { + if (local_stream) { + return 0; + } + + rv = ngtcp2_idtr_open(idtr, fr->stream_id); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + assert(rv == NGTCP2_ERR_STREAM_IN_USE); + return 0; + } + + /* Frame is received before we create ngtcp2_strm object. */ + strm = ngtcp2_objalloc_strm_get(&conn->strm_objalloc); + if (strm == NULL) { + return NGTCP2_ERR_NOMEM; + } + rv = ngtcp2_conn_init_stream(conn, strm, fr->stream_id, NULL); + if (rv != 0) { + ngtcp2_objalloc_strm_release(&conn->strm_objalloc, strm); + return rv; + } + + if (!bidi) { + ngtcp2_strm_shutdown(strm, NGTCP2_STRM_FLAG_SHUT_WR); + strm->flags |= NGTCP2_STRM_FLAG_FIN_ACKED; + } + + rv = conn_call_stream_open(conn, strm); + if (rv != 0) { + return rv; + } + } + + if (strm->rx.max_offset < fr->offset) { + return NGTCP2_ERR_FLOW_CONTROL; + } + + if (fr->offset <= strm->rx.last_offset) { + return 0; + } + + if (strm->flags & NGTCP2_STRM_FLAG_SHUT_RD) { + return NGTCP2_ERR_FINAL_SIZE; + } + + datalen = fr->offset - strm->rx.last_offset; + if (datalen) { + if (conn_max_data_violated(conn, datalen)) { + return NGTCP2_ERR_FLOW_CONTROL; + } + + conn->rx.offset += datalen; + + if (strm->flags & NGTCP2_STRM_FLAG_STOP_SENDING) { + ngtcp2_conn_extend_max_offset(conn, datalen); + } + } + + strm->rx.last_offset = fr->offset; + + return 0; +} + +/* + * conn_recv_data_blocked processes the incoming DATA_BLOCKED frame + * |fr|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_FLOW_CONTROL + * It violates connection-level flow control limit. + */ +static int conn_recv_data_blocked(ngtcp2_conn *conn, ngtcp2_data_blocked *fr) { + if (conn->rx.max_offset < fr->offset) { + return NGTCP2_ERR_FLOW_CONTROL; + } + + return 0; +} + +/* + * conn_select_preferred_addr asks a client application to select a + * server address from preferred addresses received from server. If a + * client chooses the address, path validation will start. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static int conn_select_preferred_addr(ngtcp2_conn *conn) { + ngtcp2_path_storage ps; + int rv; + ngtcp2_pv *pv; + ngtcp2_dcid *dcid; + + if (ngtcp2_ringbuf_len(&conn->dcid.unused.rb) == 0) { + return 0; + } + + ngtcp2_path_storage_zero(&ps); + ngtcp2_addr_copy(&ps.path.local, &conn->dcid.current.ps.path.local); + + rv = conn_call_select_preferred_addr(conn, &ps.path); + if (rv != 0) { + return rv; + } + + if (ps.path.remote.addrlen == 0 || + ngtcp2_addr_eq(&conn->dcid.current.ps.path.remote, &ps.path.remote)) { + return 0; + } + + assert(conn->pv == NULL); + + dcid = ngtcp2_ringbuf_get(&conn->dcid.unused.rb, 0); + ngtcp2_dcid_set_path(dcid, &ps.path); + + rv = ngtcp2_pv_new(&pv, dcid, conn_compute_pv_timeout(conn), + NGTCP2_PV_FLAG_PREFERRED_ADDR, &conn->log, conn->mem); + if (rv != 0) { + /* TODO Call ngtcp2_dcid_free here if it is introduced */ + return rv; + } + + ngtcp2_ringbuf_pop_front(&conn->dcid.unused.rb); + conn->pv = pv; + + return conn_call_activate_dcid(conn, &pv->dcid); +} + +/* + * conn_recv_handshake_done processes the incoming HANDSHAKE_DONE + * frame |fr|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_PROTO + * Server received HANDSHAKE_DONE frame. + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static int conn_recv_handshake_done(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + int rv; + + if (conn->server) { + return NGTCP2_ERR_PROTO; + } + + if (conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED) { + return 0; + } + + conn->flags |= NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED | + NGTCP2_CONN_FLAG_SERVER_ADDR_VERIFIED; + + conn->pktns.rtb.persistent_congestion_start_ts = ts; + + ngtcp2_conn_discard_handshake_state(conn, ts); + + assert(conn->remote.transport_params); + + if (conn->remote.transport_params->preferred_addr_present) { + rv = conn_select_preferred_addr(conn); + if (rv != 0) { + return rv; + } + } + + rv = conn_call_handshake_confirmed(conn); + if (rv != 0) { + return rv; + } + + /* Re-arm loss detection timer after handshake has been + confirmed. */ + ngtcp2_conn_set_loss_detection_timer(conn, ts); + + return 0; +} + +/* + * conn_recv_datagram processes the incoming DATAGRAM frame |fr|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +static int conn_recv_datagram(ngtcp2_conn *conn, ngtcp2_datagram *fr) { + assert(conn->local.transport_params.max_datagram_frame_size); + + return conn_call_recv_datagram(conn, fr); +} + +/* + * conn_key_phase_changed returns nonzero if |hd| indicates that the + * key phase has unexpected value. + */ +static int conn_key_phase_changed(ngtcp2_conn *conn, const ngtcp2_pkt_hd *hd) { + ngtcp2_pktns *pktns = &conn->pktns; + + return !(pktns->crypto.rx.ckm->flags & NGTCP2_CRYPTO_KM_FLAG_KEY_PHASE_ONE) ^ + !(hd->flags & NGTCP2_PKT_FLAG_KEY_PHASE); +} + +static int conn_initiate_key_update(ngtcp2_conn *conn, ngtcp2_tstamp ts); + +/* + * conn_prepare_key_update installs new updated keys. + */ +static int conn_prepare_key_update(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + int rv; + ngtcp2_tstamp confirmed_ts = conn->crypto.key_update.confirmed_ts; + ngtcp2_duration pto = conn_compute_pto(conn, &conn->pktns); + ngtcp2_pktns *pktns = &conn->pktns; + ngtcp2_crypto_km *rx_ckm = pktns->crypto.rx.ckm; + ngtcp2_crypto_km *tx_ckm = pktns->crypto.tx.ckm; + ngtcp2_crypto_km *new_rx_ckm, *new_tx_ckm; + ngtcp2_crypto_aead_ctx rx_aead_ctx = {0}, tx_aead_ctx = {0}; + size_t secretlen, ivlen; + + if ((conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED) && + tx_ckm->use_count >= pktns->crypto.ctx.max_encryption && + conn_initiate_key_update(conn, ts) != 0) { + return NGTCP2_ERR_AEAD_LIMIT_REACHED; + } + + if ((conn->flags & NGTCP2_CONN_FLAG_KEY_UPDATE_NOT_CONFIRMED) || + ngtcp2_tstamp_not_elapsed(confirmed_ts, pto, ts)) { + return 0; + } + + if (conn->crypto.key_update.new_rx_ckm || + conn->crypto.key_update.new_tx_ckm) { + assert(conn->crypto.key_update.new_rx_ckm); + assert(conn->crypto.key_update.new_tx_ckm); + return 0; + } + + secretlen = rx_ckm->secret.len; + ivlen = rx_ckm->iv.len; + + rv = ngtcp2_crypto_km_nocopy_new(&conn->crypto.key_update.new_rx_ckm, + secretlen, ivlen, conn->mem); + if (rv != 0) { + return rv; + } + + rv = ngtcp2_crypto_km_nocopy_new(&conn->crypto.key_update.new_tx_ckm, + secretlen, ivlen, conn->mem); + if (rv != 0) { + return rv; + } + + new_rx_ckm = conn->crypto.key_update.new_rx_ckm; + new_tx_ckm = conn->crypto.key_update.new_tx_ckm; + + rv = conn_call_update_key( + conn, new_rx_ckm->secret.base, new_tx_ckm->secret.base, &rx_aead_ctx, + new_rx_ckm->iv.base, &tx_aead_ctx, new_tx_ckm->iv.base, rx_ckm->secret.base, + tx_ckm->secret.base, secretlen); + if (rv != 0) { + return rv; + } + + new_rx_ckm->aead_ctx = rx_aead_ctx; + new_tx_ckm->aead_ctx = tx_aead_ctx; + + if (!(rx_ckm->flags & NGTCP2_CRYPTO_KM_FLAG_KEY_PHASE_ONE)) { + new_rx_ckm->flags |= NGTCP2_CRYPTO_KM_FLAG_KEY_PHASE_ONE; + new_tx_ckm->flags |= NGTCP2_CRYPTO_KM_FLAG_KEY_PHASE_ONE; + } + + if (conn->crypto.key_update.old_rx_ckm) { + conn_call_delete_crypto_aead_ctx( + conn, &conn->crypto.key_update.old_rx_ckm->aead_ctx); + ngtcp2_crypto_km_del(conn->crypto.key_update.old_rx_ckm, conn->mem); + conn->crypto.key_update.old_rx_ckm = NULL; + } + + return 0; +} + +/* + * conn_rotate_keys rotates keys. The current key moves to old key, + * and new key moves to the current key. If the local endpoint + * initiated this key update, pass nonzero as |initiator|. + */ +static void conn_rotate_keys(ngtcp2_conn *conn, int64_t pkt_num, + int initiator) { + ngtcp2_pktns *pktns = &conn->pktns; + + assert(conn->crypto.key_update.new_rx_ckm); + assert(conn->crypto.key_update.new_tx_ckm); + assert(!conn->crypto.key_update.old_rx_ckm); + assert(!(conn->flags & NGTCP2_CONN_FLAG_PPE_PENDING)); + + conn->crypto.key_update.old_rx_ckm = pktns->crypto.rx.ckm; + + pktns->crypto.rx.ckm = conn->crypto.key_update.new_rx_ckm; + conn->crypto.key_update.new_rx_ckm = NULL; + pktns->crypto.rx.ckm->pkt_num = pkt_num; + + assert(pktns->crypto.tx.ckm); + + conn_call_delete_crypto_aead_ctx(conn, &pktns->crypto.tx.ckm->aead_ctx); + ngtcp2_crypto_km_del(pktns->crypto.tx.ckm, conn->mem); + + pktns->crypto.tx.ckm = conn->crypto.key_update.new_tx_ckm; + conn->crypto.key_update.new_tx_ckm = NULL; + pktns->crypto.tx.ckm->pkt_num = pktns->tx.last_pkt_num + 1; + + conn->flags |= NGTCP2_CONN_FLAG_KEY_UPDATE_NOT_CONFIRMED; + if (initiator) { + conn->flags |= NGTCP2_CONN_FLAG_KEY_UPDATE_INITIATOR; + } +} + +/* + * conn_path_validation_in_progress returns nonzero if path validation + * against |path| is underway. + */ +static int conn_path_validation_in_progress(ngtcp2_conn *conn, + const ngtcp2_path *path) { + ngtcp2_pv *pv = conn->pv; + + return pv && ngtcp2_path_eq(&pv->dcid.ps.path, path); +} + +/* + * conn_recv_non_probing_pkt_on_new_path is called when non-probing + * packet is received via new path. It starts path validation against + * the new path. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_CONN_ID_BLOCKED + * No DCID is available + * NGTCP2_ERR_NOMEM + * Out of memory + */ +static int conn_recv_non_probing_pkt_on_new_path(ngtcp2_conn *conn, + const ngtcp2_path *path, + size_t dgramlen, + int new_cid_used, + ngtcp2_tstamp ts) { + ngtcp2_dcid dcid, *bound_dcid, *last; + ngtcp2_pv *pv; + int rv; + ngtcp2_duration pto; + int require_new_cid; + int local_addr_eq; + uint32_t remote_addr_cmp; + size_t len, i; + + assert(conn->server); + + if (conn->pv && (conn->pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) && + ngtcp2_path_eq(&conn->pv->fallback_dcid.ps.path, path)) { + /* If new path equals fallback path, that means connection + migrated back to the original path. Fallback path is + considered to be validated. */ + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PTV, + "path is migrated back to the original path"); + ngtcp2_dcid_copy(&conn->dcid.current, &conn->pv->fallback_dcid); + conn_reset_congestion_state(conn, ts); + conn->dcid.current.bytes_recv += dgramlen; + conn_reset_ecn_validation_state(conn); + + rv = conn_abort_pv(conn, ts); + if (rv != 0) { + return rv; + } + + /* Run PMTUD just in case if it is prematurely aborted */ + assert(!conn->pmtud); + + return conn_start_pmtud(conn); + } + + remote_addr_cmp = + ngtcp2_addr_compare(&conn->dcid.current.ps.path.remote, &path->remote); + local_addr_eq = + ngtcp2_addr_eq(&conn->dcid.current.ps.path.local, &path->local); + + /* + * When to change DCID? RFC 9002 section 9.5 says: + * + * An endpoint MUST NOT reuse a connection ID when sending from more + * than one local address -- for example, when initiating connection + * migration as described in Section 9.2 or when probing a new + * network path as described in Section 9.1. + * + * Similarly, an endpoint MUST NOT reuse a connection ID when + * sending to more than one destination address. Due to network + * changes outside the control of its peer, an endpoint might + * receive packets from a new source address with the same + * Destination Connection ID field value, in which case it MAY + * continue to use the current connection ID with the new remote + * address while still sending from the same local address. + */ + require_new_cid = conn->dcid.current.cid.datalen && + ((new_cid_used && remote_addr_cmp) || !local_addr_eq); + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "non-probing packet was received from new remote address"); + + len = ngtcp2_ringbuf_len(&conn->dcid.bound.rb); + + for (i = 0; i < len; ++i) { + bound_dcid = ngtcp2_ringbuf_get(&conn->dcid.bound.rb, i); + if (ngtcp2_path_eq(&bound_dcid->ps.path, path)) { + ngtcp2_log_info( + &conn->log, NGTCP2_LOG_EVENT_CON, + "Found DCID which has already been bound to the new path"); + + ngtcp2_dcid_copy(&dcid, bound_dcid); + if (i == 0) { + ngtcp2_ringbuf_pop_front(&conn->dcid.bound.rb); + } else if (i == ngtcp2_ringbuf_len(&conn->dcid.bound.rb) - 1) { + ngtcp2_ringbuf_pop_back(&conn->dcid.bound.rb); + } else { + last = ngtcp2_ringbuf_get(&conn->dcid.bound.rb, len - 1); + ngtcp2_dcid_copy(bound_dcid, last); + ngtcp2_ringbuf_pop_back(&conn->dcid.bound.rb); + } + require_new_cid = 0; + + if (dcid.cid.datalen) { + rv = conn_call_activate_dcid(conn, &dcid); + if (rv != 0) { + return rv; + } + } + break; + } + } + + if (i == len) { + if (require_new_cid) { + if (ngtcp2_ringbuf_len(&conn->dcid.unused.rb) == 0) { + return NGTCP2_ERR_CONN_ID_BLOCKED; + } + ngtcp2_dcid_copy(&dcid, ngtcp2_ringbuf_get(&conn->dcid.unused.rb, 0)); + ngtcp2_ringbuf_pop_front(&conn->dcid.unused.rb); + + rv = conn_call_activate_dcid(conn, &dcid); + if (rv != 0) { + return rv; + } + } else { + /* Use the current DCID if a remote endpoint does not change + DCID. */ + ngtcp2_dcid_copy(&dcid, &conn->dcid.current); + dcid.bytes_sent = 0; + dcid.bytes_recv = 0; + dcid.flags &= (uint8_t)~NGTCP2_DCID_FLAG_PATH_VALIDATED; + } + + ngtcp2_dcid_set_path(&dcid, path); + } + + dcid.bytes_recv += dgramlen; + + pto = conn_compute_pto(conn, &conn->pktns); + + rv = ngtcp2_pv_new(&pv, &dcid, conn_compute_pv_timeout_pto(conn, pto), + NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE, &conn->log, conn->mem); + if (rv != 0) { + return rv; + } + + if (conn->pv && (conn->pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE)) { + ngtcp2_dcid_copy(&pv->fallback_dcid, &conn->pv->fallback_dcid); + pv->fallback_pto = conn->pv->fallback_pto; + /* Unset the flag bit so that conn_stop_pv does not retire + DCID. */ + conn->pv->flags &= (uint8_t)~NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE; + } else { + ngtcp2_dcid_copy(&pv->fallback_dcid, &conn->dcid.current); + pv->fallback_pto = pto; + } + + ngtcp2_dcid_copy(&conn->dcid.current, &dcid); + + if (!local_addr_eq || (remote_addr_cmp & (NGTCP2_ADDR_COMPARE_FLAG_ADDR | + NGTCP2_ADDR_COMPARE_FLAG_FAMILY))) { + conn_reset_congestion_state(conn, ts); + } + + conn_reset_ecn_validation_state(conn); + + ngtcp2_conn_stop_pmtud(conn); + + if (conn->pv) { + ngtcp2_log_info( + &conn->log, NGTCP2_LOG_EVENT_PTV, + "path migration is aborted because new migration has started"); + rv = conn_abort_pv(conn, ts); + if (rv != 0) { + return rv; + } + } + + conn->pv = pv; + + return 0; +} + +/* + * conn_recv_pkt_from_new_path is called when a 1RTT packet is + * received from new path (not current path). This packet would be a + * packet which only contains probing frame, or reordered packet, or a + * path is being validated. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_CONN_ID_BLOCKED + * No unused DCID is available + * NGTCP2_ERR_NOMEM + * Out of memory + */ +static int conn_recv_pkt_from_new_path(ngtcp2_conn *conn, + const ngtcp2_path *path, size_t dgramlen, + int path_challenge_recved, + ngtcp2_tstamp ts) { + ngtcp2_pv *pv = conn->pv; + ngtcp2_dcid *bound_dcid; + int rv; + + if (pv) { + if (ngtcp2_path_eq(&pv->dcid.ps.path, path)) { + pv->dcid.bytes_recv += dgramlen; + return 0; + } + + if ((pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) && + ngtcp2_path_eq(&pv->fallback_dcid.ps.path, path)) { + pv->fallback_dcid.bytes_recv += dgramlen; + return 0; + } + } + + if (!path_challenge_recved) { + return 0; + } + + rv = conn_bind_dcid(conn, &bound_dcid, path, ts); + if (rv != 0) { + return rv; + } + + ngtcp2_dcid_set_path(bound_dcid, path); + bound_dcid->bytes_recv += dgramlen; + + return 0; +} + +/* + * conn_recv_delayed_handshake_pkt processes the received Handshake + * packet which is received after handshake completed. This function + * does the minimal job, and its purpose is send acknowledgement of + * this packet to the peer. We assume that hd->type == + * NGTCP2_PKT_HANDSHAKE. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Frame is badly formatted; or frame type is unknown. + * NGTCP2_ERR_NOMEM + * Out of memory + * NGTCP2_ERR_DISCARD_PKT + * Packet was discarded. + * NGTCP2_ERR_ACK_FRAME + * ACK frame is malformed. + * NGTCP2_ERR_PROTO + * Frame that is not allowed in Handshake packet is received. + */ +static int +conn_recv_delayed_handshake_pkt(ngtcp2_conn *conn, const ngtcp2_pkt_info *pi, + const ngtcp2_pkt_hd *hd, size_t pktlen, + const uint8_t *payload, size_t payloadlen, + ngtcp2_tstamp pkt_ts, ngtcp2_tstamp ts) { + ngtcp2_ssize nread; + ngtcp2_max_frame mfr; + ngtcp2_frame *fr = &mfr.fr; + int rv; + int require_ack = 0; + ngtcp2_pktns *pktns; + + assert(hd->type == NGTCP2_PKT_HANDSHAKE); + + pktns = conn->hs_pktns; + + if (payloadlen == 0) { + /* QUIC packet must contain at least one frame */ + return NGTCP2_ERR_PROTO; + } + + ngtcp2_qlog_pkt_received_start(&conn->qlog); + + for (; payloadlen;) { + nread = ngtcp2_pkt_decode_frame(fr, payload, payloadlen); + if (nread < 0) { + return (int)nread; + } + + payload += nread; + payloadlen -= (size_t)nread; + + switch (fr->type) { + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + fr->ack.ack_delay = 0; + fr->ack.ack_delay_unscaled = 0; + break; + } + + ngtcp2_log_rx_fr(&conn->log, hd, fr); + + switch (fr->type) { + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + if (!conn->server) { + conn->flags |= NGTCP2_CONN_FLAG_SERVER_ADDR_VERIFIED; + } + rv = conn_recv_ack(conn, pktns, &fr->ack, pkt_ts, ts); + if (rv != 0) { + return rv; + } + break; + case NGTCP2_FRAME_PADDING: + break; + case NGTCP2_FRAME_CONNECTION_CLOSE: + rv = conn_recv_connection_close(conn, &fr->connection_close); + if (rv != 0) { + return rv; + } + break; + case NGTCP2_FRAME_CRYPTO: + case NGTCP2_FRAME_PING: + require_ack = 1; + break; + default: + return NGTCP2_ERR_PROTO; + } + + ngtcp2_qlog_write_frame(&conn->qlog, fr); + } + + ngtcp2_qlog_pkt_received_end(&conn->qlog, hd, pktlen); + + rv = pktns_commit_recv_pkt_num(pktns, hd->pkt_num, require_ack, pkt_ts); + if (rv != 0) { + return rv; + } + + pktns_increase_ecn_counts(pktns, pi); + + /* Initial and Handshake are always acknowledged without delay. No + need to call ngtcp2_acktr_immediate_ack(). */ + rv = ngtcp2_conn_sched_ack(conn, &pktns->acktr, hd->pkt_num, require_ack, + pkt_ts); + if (rv != 0) { + return rv; + } + + conn_restart_timer_on_read(conn, ts); + + ngtcp2_qlog_metrics_updated(&conn->qlog, &conn->cstat); + + return 0; +} + +/* + * conn_allow_path_change_under_disable_active_migration returns + * nonzero if a packet from |path| is acceptable under + * disable_active_migration is on. + */ +static int +conn_allow_path_change_under_disable_active_migration(ngtcp2_conn *conn, + const ngtcp2_path *path) { + uint32_t remote_addr_cmp; + const ngtcp2_preferred_addr *paddr; + ngtcp2_addr addr; + + assert(conn->server); + assert(conn->local.transport_params.disable_active_migration); + + /* If local address does not change, it must be passive migration + (NAT rebinding). */ + if (ngtcp2_addr_eq(&conn->dcid.current.ps.path.local, &path->local)) { + remote_addr_cmp = + ngtcp2_addr_compare(&conn->dcid.current.ps.path.remote, &path->remote); + + return (remote_addr_cmp | NGTCP2_ADDR_COMPARE_FLAG_PORT) == + NGTCP2_ADDR_COMPARE_FLAG_PORT; + } + + /* If local address changes, it must be one of the preferred + addresses. */ + + if (!conn->local.transport_params.preferred_addr_present) { + return 0; + } + + paddr = &conn->local.transport_params.preferred_addr; + + if (paddr->ipv4_present) { + ngtcp2_addr_init(&addr, (const ngtcp2_sockaddr *)&paddr->ipv4, + sizeof(paddr->ipv4)); + + if (ngtcp2_addr_eq(&addr, &path->local)) { + return 1; + } + } + + if (paddr->ipv6_present) { + ngtcp2_addr_init(&addr, (const ngtcp2_sockaddr *)&paddr->ipv6, + sizeof(paddr->ipv6)); + + if (ngtcp2_addr_eq(&addr, &path->local)) { + return 1; + } + } + + return 0; +} + +/* + * conn_recv_pkt processes a packet contained in the buffer pointed by + * |pkt| of length |pktlen|. |pkt| may contain multiple QUIC packets. + * This function only processes the first packet. |pkt_ts| is the + * timestamp when packet is received. |ts| should be the current + * time. Usually they are the same, but for buffered packets, + * |pkt_ts| would be earlier than |ts|. + * + * This function returns the number of bytes processed if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_DISCARD_PKT + * Packet was discarded because plain text header was malformed; + * or its payload could not be decrypted. + * NGTCP2_ERR_PROTO + * Packet is badly formatted; or 0RTT packet contains other than + * PADDING or STREAM frames; or other QUIC protocol violation is + * found. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_FRAME_ENCODING + * Frame is badly formatted; or frame type is unknown. + * NGTCP2_ERR_ACK_FRAME + * ACK frame is malformed. + * NGTCP2_ERR_STREAM_STATE + * Frame is received to the local stream which is not initiated. + * NGTCP2_ERR_STREAM_LIMIT + * Frame has remote stream ID which is strictly greater than the + * allowed limit. + * NGTCP2_ERR_FLOW_CONTROL + * Flow control limit is violated. + * NGTCP2_ERR_FINAL_SIZE + * Frame has strictly larger end offset than it is permitted. + */ +static ngtcp2_ssize conn_recv_pkt(ngtcp2_conn *conn, const ngtcp2_path *path, + const ngtcp2_pkt_info *pi, const uint8_t *pkt, + size_t pktlen, size_t dgramlen, + ngtcp2_tstamp pkt_ts, ngtcp2_tstamp ts) { + ngtcp2_pkt_hd hd; + int rv = 0; + size_t hdpktlen; + const uint8_t *payload; + size_t payloadlen; + ngtcp2_ssize nread, nwrite; + ngtcp2_max_frame mfr; + ngtcp2_frame *fr = &mfr.fr; + int require_ack = 0; + ngtcp2_crypto_aead *aead; + ngtcp2_crypto_cipher *hp; + ngtcp2_crypto_km *ckm; + ngtcp2_crypto_cipher_ctx *hp_ctx; + ngtcp2_hp_mask hp_mask; + ngtcp2_decrypt decrypt; + ngtcp2_pktns *pktns; + int non_probing_pkt = 0; + int key_phase_bit_changed = 0; + int force_decrypt_failure = 0; + int recv_ncid = 0; + int new_cid_used = 0; + int path_challenge_recved = 0; + + if (conn->server && conn->local.transport_params.disable_active_migration && + !ngtcp2_path_eq(&conn->dcid.current.ps.path, path) && + !conn_allow_path_change_under_disable_active_migration(conn, path)) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet is discarded because active migration is disabled"); + + return NGTCP2_ERR_DISCARD_PKT; + } + + if (pkt[0] & NGTCP2_HEADER_FORM_BIT) { + nread = ngtcp2_pkt_decode_hd_long(&hd, pkt, pktlen); + if (nread < 0) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "could not decode long header"); + return NGTCP2_ERR_DISCARD_PKT; + } + + if (pktlen < (size_t)nread + hd.len) { + return NGTCP2_ERR_DISCARD_PKT; + } + + assert(conn->negotiated_version); + + if (hd.version != conn->client_chosen_version && + hd.version != conn->negotiated_version) { + return NGTCP2_ERR_DISCARD_PKT; + } + + if (conn_verify_fixed_bit(conn, &hd) != 0) { + return NGTCP2_ERR_DISCARD_PKT; + } + + pktlen = (size_t)nread + hd.len; + + /* Quoted from spec: if subsequent packets of those types include + a different Source Connection ID, they MUST be discarded. */ + if (!ngtcp2_cid_eq(&conn->dcid.current.cid, &hd.scid)) { + ngtcp2_log_rx_pkt_hd(&conn->log, &hd); + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet was ignored because of mismatched SCID"); + return NGTCP2_ERR_DISCARD_PKT; + } + + switch (hd.type) { + case NGTCP2_PKT_INITIAL: + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "delayed Initial packet was discarded"); + return (ngtcp2_ssize)pktlen; + case NGTCP2_PKT_HANDSHAKE: + if (hd.version != conn->negotiated_version) { + return NGTCP2_ERR_DISCARD_PKT; + } + + if (!conn->hs_pktns) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "delayed Handshake packet was discarded"); + return (ngtcp2_ssize)pktlen; + } + + pktns = conn->hs_pktns; + aead = &pktns->crypto.ctx.aead; + hp = &pktns->crypto.ctx.hp; + ckm = pktns->crypto.rx.ckm; + hp_ctx = &pktns->crypto.rx.hp_ctx; + hp_mask = conn->callbacks.hp_mask; + decrypt = conn->callbacks.decrypt; + break; + case NGTCP2_PKT_0RTT: + if (!conn->server || hd.version != conn->client_chosen_version) { + return NGTCP2_ERR_DISCARD_PKT; + } + + if (!conn->early.ckm) { + return (ngtcp2_ssize)pktlen; + } + + pktns = &conn->pktns; + aead = &conn->early.ctx.aead; + hp = &conn->early.ctx.hp; + ckm = conn->early.ckm; + hp_ctx = &conn->early.hp_ctx; + hp_mask = conn->callbacks.hp_mask; + decrypt = conn->callbacks.decrypt; + break; + default: + ngtcp2_log_rx_pkt_hd(&conn->log, &hd); + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet type 0x%02x was ignored", hd.type); + return (ngtcp2_ssize)pktlen; + } + } else { + nread = ngtcp2_pkt_decode_hd_short(&hd, pkt, pktlen, conn->oscid.datalen); + if (nread < 0) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "could not decode short header"); + return NGTCP2_ERR_DISCARD_PKT; + } + + if (conn_verify_fixed_bit(conn, &hd) != 0) { + return NGTCP2_ERR_DISCARD_PKT; + } + + pktns = &conn->pktns; + aead = &pktns->crypto.ctx.aead; + hp = &pktns->crypto.ctx.hp; + ckm = pktns->crypto.rx.ckm; + hp_ctx = &pktns->crypto.rx.hp_ctx; + hp_mask = conn->callbacks.hp_mask; + decrypt = conn->callbacks.decrypt; + } + + rv = conn_ensure_decrypt_hp_buffer(conn, (size_t)nread + 4); + if (rv != 0) { + return rv; + } + + nwrite = decrypt_hp(&hd, conn->crypto.decrypt_hp_buf.base, hp, pkt, pktlen, + (size_t)nread, hp_ctx, hp_mask); + if (nwrite < 0) { + if (ngtcp2_err_is_fatal((int)nwrite)) { + return nwrite; + } + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "could not decrypt packet number"); + return NGTCP2_ERR_DISCARD_PKT; + } + + hdpktlen = (size_t)nwrite; + payload = pkt + hdpktlen; + payloadlen = pktlen - hdpktlen; + + hd.pkt_num = + ngtcp2_pkt_adjust_pkt_num(pktns->rx.max_pkt_num, hd.pkt_num, hd.pkt_numlen); + if (hd.pkt_num > NGTCP2_MAX_PKT_NUM) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "pkn=%" PRId64 " is greater than maximum pkn", hd.pkt_num); + return NGTCP2_ERR_DISCARD_PKT; + } + + ngtcp2_log_rx_pkt_hd(&conn->log, &hd); + + if (hd.type == NGTCP2_PKT_1RTT) { + key_phase_bit_changed = conn_key_phase_changed(conn, &hd); + } + + rv = conn_ensure_decrypt_buffer(conn, payloadlen); + if (rv != 0) { + return rv; + } + + if (key_phase_bit_changed) { + assert(hd.type == NGTCP2_PKT_1RTT); + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, "unexpected KEY_PHASE"); + + if (ckm->pkt_num > hd.pkt_num) { + if (conn->crypto.key_update.old_rx_ckm) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "decrypting with old key"); + ckm = conn->crypto.key_update.old_rx_ckm; + } else { + force_decrypt_failure = 1; + } + } else if (pktns->rx.max_pkt_num < hd.pkt_num) { + assert(ckm->pkt_num < hd.pkt_num); + if (!conn->crypto.key_update.new_rx_ckm) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "new key is not available"); + force_decrypt_failure = 1; + } else { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "decrypting with new key"); + ckm = conn->crypto.key_update.new_rx_ckm; + } + } else { + force_decrypt_failure = 1; + } + } + + nwrite = decrypt_pkt(conn->crypto.decrypt_buf.base, aead, payload, payloadlen, + conn->crypto.decrypt_hp_buf.base, hdpktlen, hd.pkt_num, + ckm, decrypt); + + if (force_decrypt_failure) { + nwrite = NGTCP2_ERR_DECRYPT; + } + + if (nwrite < 0) { + if (ngtcp2_err_is_fatal((int)nwrite)) { + return nwrite; + } + + assert(NGTCP2_ERR_DECRYPT == nwrite); + + if (hd.type == NGTCP2_PKT_1RTT && + ++conn->crypto.decryption_failure_count >= + pktns->crypto.ctx.max_decryption_failure) { + return NGTCP2_ERR_AEAD_LIMIT_REACHED; + } + + if (hd.flags & NGTCP2_PKT_FLAG_LONG_FORM) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "could not decrypt packet payload"); + return NGTCP2_ERR_DISCARD_PKT; + } + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "could not decrypt packet payload"); + return NGTCP2_ERR_DISCARD_PKT; + } + + rv = ngtcp2_pkt_verify_reserved_bits(conn->crypto.decrypt_hp_buf.base[0]); + if (rv != 0) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet has incorrect reserved bits"); + + return NGTCP2_ERR_PROTO; + } + + if (pktns_pkt_num_is_duplicate(pktns, hd.pkt_num)) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet was discarded because of duplicated packet number"); + return NGTCP2_ERR_DISCARD_PKT; + } + + payload = conn->crypto.decrypt_buf.base; + payloadlen = (size_t)nwrite; + + if (payloadlen == 0) { + /* QUIC packet must contain at least one frame */ + return NGTCP2_ERR_PROTO; + } + + if (hd.flags & NGTCP2_PKT_FLAG_LONG_FORM) { + switch (hd.type) { + case NGTCP2_PKT_HANDSHAKE: + rv = conn_verify_dcid(conn, NULL, &hd); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet was ignored because of mismatched DCID"); + return NGTCP2_ERR_DISCARD_PKT; + } + + rv = conn_recv_delayed_handshake_pkt(conn, pi, &hd, pktlen, payload, + payloadlen, pkt_ts, ts); + if (rv < 0) { + return (ngtcp2_ssize)rv; + } + + return (ngtcp2_ssize)pktlen; + case NGTCP2_PKT_0RTT: + if (!ngtcp2_cid_eq(&conn->rcid, &hd.dcid)) { + rv = conn_verify_dcid(conn, NULL, &hd); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet was ignored because of mismatched DCID"); + return NGTCP2_ERR_DISCARD_PKT; + } + } + break; + default: + /* Unreachable */ + ngtcp2_unreachable(); + } + } else { + rv = conn_verify_dcid(conn, &new_cid_used, &hd); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "packet was ignored because of mismatched DCID"); + return NGTCP2_ERR_DISCARD_PKT; + } + } + + ngtcp2_qlog_pkt_received_start(&conn->qlog); + + for (; payloadlen;) { + nread = ngtcp2_pkt_decode_frame(fr, payload, payloadlen); + if (nread < 0) { + return nread; + } + + payload += nread; + payloadlen -= (size_t)nread; + + switch (fr->type) { + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + if ((hd.flags & NGTCP2_PKT_FLAG_LONG_FORM) && + hd.type == NGTCP2_PKT_0RTT) { + return NGTCP2_ERR_PROTO; + } + assert(conn->remote.transport_params); + assign_recved_ack_delay_unscaled( + &fr->ack, conn->remote.transport_params->ack_delay_exponent); + break; + } + + ngtcp2_log_rx_fr(&conn->log, &hd, fr); + + if (hd.type == NGTCP2_PKT_0RTT) { + switch (fr->type) { + case NGTCP2_FRAME_PADDING: + case NGTCP2_FRAME_PING: + case NGTCP2_FRAME_RESET_STREAM: + case NGTCP2_FRAME_STOP_SENDING: + case NGTCP2_FRAME_STREAM: + case NGTCP2_FRAME_MAX_DATA: + case NGTCP2_FRAME_MAX_STREAM_DATA: + case NGTCP2_FRAME_MAX_STREAMS_BIDI: + case NGTCP2_FRAME_MAX_STREAMS_UNI: + case NGTCP2_FRAME_DATA_BLOCKED: + case NGTCP2_FRAME_STREAM_DATA_BLOCKED: + case NGTCP2_FRAME_STREAMS_BLOCKED_BIDI: + case NGTCP2_FRAME_STREAMS_BLOCKED_UNI: + case NGTCP2_FRAME_NEW_CONNECTION_ID: + case NGTCP2_FRAME_PATH_CHALLENGE: + case NGTCP2_FRAME_CONNECTION_CLOSE: + case NGTCP2_FRAME_CONNECTION_CLOSE_APP: + case NGTCP2_FRAME_DATAGRAM: + case NGTCP2_FRAME_DATAGRAM_LEN: + break; + default: + return NGTCP2_ERR_PROTO; + } + } + + switch (fr->type) { + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + case NGTCP2_FRAME_PADDING: + case NGTCP2_FRAME_CONNECTION_CLOSE: + case NGTCP2_FRAME_CONNECTION_CLOSE_APP: + break; + default: + require_ack = 1; + } + + switch (fr->type) { + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + if (!conn->server) { + conn->flags |= NGTCP2_CONN_FLAG_SERVER_ADDR_VERIFIED; + } + rv = conn_recv_ack(conn, pktns, &fr->ack, pkt_ts, ts); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_STREAM: + rv = conn_recv_stream(conn, &fr->stream); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_CRYPTO: + rv = conn_recv_crypto(conn, NGTCP2_ENCRYPTION_LEVEL_1RTT, + &pktns->crypto.strm, &fr->stream); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_RESET_STREAM: + rv = conn_recv_reset_stream(conn, &fr->reset_stream); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_STOP_SENDING: + rv = conn_recv_stop_sending(conn, &fr->stop_sending); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_MAX_STREAM_DATA: + rv = conn_recv_max_stream_data(conn, &fr->max_stream_data); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_MAX_DATA: + conn_recv_max_data(conn, &fr->max_data); + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_MAX_STREAMS_BIDI: + case NGTCP2_FRAME_MAX_STREAMS_UNI: + rv = conn_recv_max_streams(conn, &fr->max_streams); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_CONNECTION_CLOSE: + case NGTCP2_FRAME_CONNECTION_CLOSE_APP: + rv = conn_recv_connection_close(conn, &fr->connection_close); + if (rv != 0) { + return rv; + } + break; + case NGTCP2_FRAME_PING: + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_PATH_CHALLENGE: + conn_recv_path_challenge(conn, path, &fr->path_challenge); + path_challenge_recved = 1; + break; + case NGTCP2_FRAME_PATH_RESPONSE: + rv = conn_recv_path_response(conn, &fr->path_response, ts); + if (rv != 0) { + return rv; + } + break; + case NGTCP2_FRAME_NEW_CONNECTION_ID: + rv = conn_recv_new_connection_id(conn, &fr->new_connection_id); + if (rv != 0) { + return rv; + } + recv_ncid = 1; + break; + case NGTCP2_FRAME_RETIRE_CONNECTION_ID: + rv = conn_recv_retire_connection_id(conn, &hd, &fr->retire_connection_id, + ts); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_NEW_TOKEN: + rv = conn_recv_new_token(conn, &fr->new_token); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_HANDSHAKE_DONE: + rv = conn_recv_handshake_done(conn, ts); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_STREAMS_BLOCKED_BIDI: + rv = conn_recv_streams_blocked_bidi(conn, &fr->streams_blocked); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_STREAMS_BLOCKED_UNI: + rv = conn_recv_streams_blocked_uni(conn, &fr->streams_blocked); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_STREAM_DATA_BLOCKED: + rv = conn_recv_stream_data_blocked(conn, &fr->stream_data_blocked); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_DATA_BLOCKED: + rv = conn_recv_data_blocked(conn, &fr->data_blocked); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + case NGTCP2_FRAME_DATAGRAM: + case NGTCP2_FRAME_DATAGRAM_LEN: + if ((uint64_t)nread > + conn->local.transport_params.max_datagram_frame_size) { + return NGTCP2_ERR_PROTO; + } + rv = conn_recv_datagram(conn, &fr->datagram); + if (rv != 0) { + return rv; + } + non_probing_pkt = 1; + break; + } + + ngtcp2_qlog_write_frame(&conn->qlog, fr); + } + + ngtcp2_qlog_pkt_received_end(&conn->qlog, &hd, pktlen); + + if (recv_ncid) { + rv = conn_post_process_recv_new_connection_id(conn, ts); + if (rv != 0) { + return rv; + } + } + + if (conn->server && hd.type == NGTCP2_PKT_1RTT && + !ngtcp2_path_eq(&conn->dcid.current.ps.path, path)) { + if (non_probing_pkt && pktns->rx.max_pkt_num < hd.pkt_num && + !conn_path_validation_in_progress(conn, path)) { + rv = conn_recv_non_probing_pkt_on_new_path(conn, path, dgramlen, + new_cid_used, ts); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + + /* DCID is not available. Just continue. */ + assert(NGTCP2_ERR_CONN_ID_BLOCKED == rv); + } + } else { + rv = conn_recv_pkt_from_new_path(conn, path, dgramlen, + path_challenge_recved, ts); + if (rv != 0) { + if (ngtcp2_err_is_fatal(rv)) { + return rv; + } + + /* DCID is not available. Just continue. */ + assert(NGTCP2_ERR_CONN_ID_BLOCKED == rv); + } + } + } + + if (hd.type == NGTCP2_PKT_1RTT) { + if (ckm == conn->crypto.key_update.new_rx_ckm) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, "rotate keys"); + conn_rotate_keys(conn, hd.pkt_num, /* initiator = */ 0); + } else if (ckm->pkt_num > hd.pkt_num) { + ckm->pkt_num = hd.pkt_num; + } + + if (conn->server && conn->early.ckm && + conn->early.discard_started_ts == UINT64_MAX) { + conn->early.discard_started_ts = ts; + } + + if (ngtcp2_path_eq(&conn->dcid.current.ps.path, path)) { + conn_update_keep_alive_last_ts(conn, ts); + } + } + + rv = pktns_commit_recv_pkt_num(pktns, hd.pkt_num, require_ack, pkt_ts); + if (rv != 0) { + return rv; + } + + pktns_increase_ecn_counts(pktns, pi); + + if (require_ack && + (++pktns->acktr.rx_npkt >= conn->local.settings.ack_thresh || + (pi->ecn & NGTCP2_ECN_MASK) == NGTCP2_ECN_CE)) { + ngtcp2_acktr_immediate_ack(&pktns->acktr); + } + + rv = + ngtcp2_conn_sched_ack(conn, &pktns->acktr, hd.pkt_num, require_ack, pkt_ts); + if (rv != 0) { + return rv; + } + + conn_restart_timer_on_read(conn, ts); + + ngtcp2_qlog_metrics_updated(&conn->qlog, &conn->cstat); + + return conn->state == NGTCP2_CS_DRAINING ? NGTCP2_ERR_DRAINING + : (ngtcp2_ssize)pktlen; +} + +/* + * conn_process_buffered_protected_pkt processes buffered 0RTT or 1RTT + * packets. + * + * This function returns 0 if it succeeds, or the same negative error + * codes from conn_recv_pkt. + */ +static int conn_process_buffered_protected_pkt(ngtcp2_conn *conn, + ngtcp2_pktns *pktns, + ngtcp2_tstamp ts) { + ngtcp2_ssize nread; + ngtcp2_pkt_chain **ppc, *next; + int rv; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "processing buffered protected packet"); + + for (ppc = &pktns->rx.buffed_pkts; *ppc;) { + next = (*ppc)->next; + nread = conn_recv_pkt(conn, &(*ppc)->path.path, &(*ppc)->pi, (*ppc)->pkt, + (*ppc)->pktlen, (*ppc)->dgramlen, (*ppc)->ts, ts); + if (nread < 0 && !ngtcp2_err_is_fatal((int)nread) && + nread != NGTCP2_ERR_DRAINING) { + /* TODO We don't know this is the first QUIC packet in a + datagram. */ + rv = conn_on_stateless_reset(conn, &(*ppc)->path.path, (*ppc)->pkt, + (*ppc)->pktlen); + if (rv == 0) { + ngtcp2_pkt_chain_del(*ppc, conn->mem); + *ppc = next; + return NGTCP2_ERR_DRAINING; + } + } + + ngtcp2_pkt_chain_del(*ppc, conn->mem); + *ppc = next; + if (nread < 0) { + if (nread == NGTCP2_ERR_DISCARD_PKT) { + continue; + } + return (int)nread; + } + } + + return 0; +} + +/* + * conn_process_buffered_handshake_pkt processes buffered Handshake + * packets. + * + * This function returns 0 if it succeeds, or the same negative error + * codes from conn_recv_handshake_pkt. + */ +static int conn_process_buffered_handshake_pkt(ngtcp2_conn *conn, + ngtcp2_tstamp ts) { + ngtcp2_pktns *pktns = conn->hs_pktns; + ngtcp2_ssize nread; + ngtcp2_pkt_chain **ppc, *next; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "processing buffered handshake packet"); + + for (ppc = &pktns->rx.buffed_pkts; *ppc;) { + next = (*ppc)->next; + nread = conn_recv_handshake_pkt(conn, &(*ppc)->path.path, &(*ppc)->pi, + (*ppc)->pkt, (*ppc)->pktlen, + (*ppc)->dgramlen, (*ppc)->ts, ts); + ngtcp2_pkt_chain_del(*ppc, conn->mem); + *ppc = next; + if (nread < 0) { + if (nread == NGTCP2_ERR_DISCARD_PKT) { + continue; + } + return (int)nread; + } + } + + return 0; +} + +static void conn_sync_stream_id_limit(ngtcp2_conn *conn) { + ngtcp2_transport_params *params = conn->remote.transport_params; + + assert(params); + + conn->local.bidi.max_streams = params->initial_max_streams_bidi; + conn->local.uni.max_streams = params->initial_max_streams_uni; +} + +static int strm_set_max_offset(void *data, void *ptr) { + ngtcp2_conn *conn = ptr; + ngtcp2_transport_params *params = conn->remote.transport_params; + ngtcp2_strm *strm = data; + uint64_t max_offset; + int rv; + + assert(params); + + if (!conn_local_stream(conn, strm->stream_id)) { + return 0; + } + + if (bidi_stream(strm->stream_id)) { + max_offset = params->initial_max_stream_data_bidi_remote; + } else { + max_offset = params->initial_max_stream_data_uni; + } + + if (strm->tx.max_offset < max_offset) { + strm->tx.max_offset = max_offset; + + /* Don't call callback if stream is half-closed local */ + if (strm->flags & NGTCP2_STRM_FLAG_SHUT_WR) { + return 0; + } + + rv = conn_call_extend_max_stream_data(conn, strm, strm->stream_id, + strm->tx.max_offset); + if (rv != 0) { + return rv; + } + } + + return 0; +} + +static int conn_sync_stream_data_limit(ngtcp2_conn *conn) { + return ngtcp2_map_each(&conn->strms, strm_set_max_offset, conn); +} + +/* + * conn_handshake_completed is called once cryptographic handshake has + * completed. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_CALLBACK_FAILURE + * User callback failed. + */ +static int conn_handshake_completed(ngtcp2_conn *conn) { + int rv; + + conn->flags |= NGTCP2_CONN_FLAG_HANDSHAKE_COMPLETED; + + rv = conn_call_handshake_completed(conn); + if (rv != 0) { + return rv; + } + + if (conn->local.bidi.max_streams > 0) { + rv = conn_call_extend_max_local_streams_bidi(conn, + conn->local.bidi.max_streams); + if (rv != 0) { + return rv; + } + } + if (conn->local.uni.max_streams > 0) { + rv = + conn_call_extend_max_local_streams_uni(conn, conn->local.uni.max_streams); + if (rv != 0) { + return rv; + } + } + + return 0; +} + +/* + * conn_recv_cpkt processes compound packet after handshake. The + * buffer pointed by |pkt| might contain multiple packets. The 1RTT + * packet must be the last one because it does not have payload length + * field. + * + * This function returns 0 if it succeeds, or the same negative error + * codes from conn_recv_pkt except for NGTCP2_ERR_DISCARD_PKT. + */ +static int conn_recv_cpkt(ngtcp2_conn *conn, const ngtcp2_path *path, + const ngtcp2_pkt_info *pi, const uint8_t *pkt, + size_t pktlen, ngtcp2_tstamp ts) { + ngtcp2_ssize nread; + int rv; + const uint8_t *origpkt = pkt; + size_t dgramlen = pktlen; + + if (ngtcp2_path_eq(&conn->dcid.current.ps.path, path)) { + conn->dcid.current.bytes_recv += dgramlen; + } + + while (pktlen) { + nread = conn_recv_pkt(conn, path, pi, pkt, pktlen, dgramlen, ts, ts); + if (nread < 0) { + if (ngtcp2_err_is_fatal((int)nread)) { + return (int)nread; + } + + if (nread == NGTCP2_ERR_DRAINING) { + return NGTCP2_ERR_DRAINING; + } + + if (origpkt == pkt) { + rv = conn_on_stateless_reset(conn, path, origpkt, dgramlen); + if (rv == 0) { + return NGTCP2_ERR_DRAINING; + } + } + if (nread == NGTCP2_ERR_DISCARD_PKT) { + return 0; + } + return (int)nread; + } + + assert(pktlen >= (size_t)nread); + pkt += nread; + pktlen -= (size_t)nread; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_PKT, + "read packet %td left %zu", nread, pktlen); + } + + return 0; +} + +/* + * conn_is_retired_path returns nonzero if |path| is included in + * retired path list. + */ +static int conn_is_retired_path(ngtcp2_conn *conn, const ngtcp2_path *path) { + size_t i, len = ngtcp2_ringbuf_len(&conn->dcid.retired.rb); + ngtcp2_dcid *dcid; + + for (i = 0; i < len; ++i) { + dcid = ngtcp2_ringbuf_get(&conn->dcid.retired.rb, i); + if (ngtcp2_path_eq(&dcid->ps.path, path)) { + return 1; + } + } + + return 0; +} + +/* + * conn_enqueue_handshake_done enqueues HANDSHAKE_DONE frame for + * transmission. + */ +static int conn_enqueue_handshake_done(ngtcp2_conn *conn) { + ngtcp2_pktns *pktns = &conn->pktns; + ngtcp2_frame_chain *nfrc; + int rv; + + assert(conn->server); + + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, &conn->frc_objalloc); + if (rv != 0) { + return rv; + } + + nfrc->fr.type = NGTCP2_FRAME_HANDSHAKE_DONE; + nfrc->next = pktns->tx.frq; + pktns->tx.frq = nfrc; + + return 0; +} + +/** + * @function + * + * `conn_read_handshake` performs QUIC cryptographic handshake by + * reading given data. |pkt| points to the buffer to read and + * |pktlen| is the length of the buffer. |path| is the network path. + * + * This function returns the number of bytes processed. Unless the + * last packet is 1RTT packet and an application decryption key has + * been installed, it returns |pktlen| if it succeeds. If it finds + * 1RTT packet and an application decryption key has been installed, + * it returns the number of bytes just before 1RTT packet begins. + * + * This function returns the number of bytes processed if it succeeds, + * or one of the following negative error codes: (TBD). + */ +static ngtcp2_ssize conn_read_handshake(ngtcp2_conn *conn, + const ngtcp2_path *path, + const ngtcp2_pkt_info *pi, + const uint8_t *pkt, size_t pktlen, + ngtcp2_tstamp ts) { + int rv; + ngtcp2_ssize nread; + + switch (conn->state) { + case NGTCP2_CS_CLIENT_INITIAL: + /* TODO Better to log something when we ignore input */ + return (ngtcp2_ssize)pktlen; + case NGTCP2_CS_CLIENT_WAIT_HANDSHAKE: + nread = conn_recv_handshake_cpkt(conn, path, pi, pkt, pktlen, ts); + if (nread < 0) { + return nread; + } + + if (conn->state == NGTCP2_CS_CLIENT_INITIAL) { + /* Retry packet was received */ + return (ngtcp2_ssize)pktlen; + } + + assert(conn->hs_pktns); + + if (conn->hs_pktns->crypto.rx.ckm && conn->in_pktns) { + rv = conn_process_buffered_handshake_pkt(conn, ts); + if (rv != 0) { + return rv; + } + } + + if (conn_is_tls_handshake_completed(conn) && + !(conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_COMPLETED)) { + rv = conn_handshake_completed(conn); + if (rv != 0) { + return rv; + } + + rv = conn_process_buffered_protected_pkt(conn, &conn->pktns, ts); + if (rv != 0) { + return rv; + } + } + + return nread; + case NGTCP2_CS_SERVER_INITIAL: + nread = conn_recv_handshake_cpkt(conn, path, pi, pkt, pktlen, ts); + if (nread < 0) { + return nread; + } + + /* + * Client Hello might not fit into single Initial packet (e.g., + * resuming session with client authentication). If we get Client + * Initial which does not increase offset or it is 0RTT packet + * buffered, perform address validation in order to buffer + * validated data only. + */ + if (ngtcp2_strm_rx_offset(&conn->in_pktns->crypto.strm) == 0) { + if (conn->in_pktns->crypto.strm.rx.rob && + ngtcp2_rob_data_buffered(conn->in_pktns->crypto.strm.rx.rob)) { + /* Address has been validated with token */ + if (conn->local.settings.tokenlen) { + return nread; + } + return NGTCP2_ERR_RETRY; + } + /* If CRYPTO frame is not processed, just drop connection. */ + return NGTCP2_ERR_DROP_CONN; + } + + /* Process re-ordered 0-RTT packets which arrived before Initial + packet. */ + if (conn->early.ckm) { + assert(conn->in_pktns); + + rv = conn_process_buffered_protected_pkt(conn, conn->in_pktns, ts); + if (rv != 0) { + return rv; + } + } + + return nread; + case NGTCP2_CS_SERVER_WAIT_HANDSHAKE: + nread = conn_recv_handshake_cpkt(conn, path, pi, pkt, pktlen, ts); + if (nread < 0) { + return nread; + } + + if (conn->hs_pktns->crypto.rx.ckm) { + rv = conn_process_buffered_handshake_pkt(conn, ts); + if (rv != 0) { + return rv; + } + } + + if (conn->hs_pktns->rx.max_pkt_num != -1) { + ngtcp2_conn_discard_initial_state(conn, ts); + } + + if (!conn_is_tls_handshake_completed(conn)) { + /* If server hits amplification limit, it cancels loss detection + timer. If server receives a packet from client, the limit is + increased and server can send more. If server has + ack-eliciting Initial or Handshake packets, it should resend + it if timer fired but timer is not armed in this case. So + instead of resending Initial/Handshake packets, if server has + 1RTT data to send, it might send them and then might hit + amplification limit again until it hits stream data limit. + Initial/Handshake data is not resent. In order to avoid this + situation, try to arm loss detection and check the expiry + here so that on next write call, we can resend + Initial/Handshake first. */ + if (conn->cstat.loss_detection_timer == UINT64_MAX) { + ngtcp2_conn_set_loss_detection_timer(conn, ts); + if (ngtcp2_conn_loss_detection_expiry(conn) <= ts) { + rv = ngtcp2_conn_on_loss_detection_timer(conn, ts); + if (rv != 0) { + return rv; + } + } + } + + if ((size_t)nread < pktlen) { + /* We have 1RTT packet and application rx key, but the + handshake has not completed yet. */ + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "buffering 1RTT packet len=%zu", + pktlen - (size_t)nread); + + rv = conn_buffer_pkt(conn, &conn->pktns, path, pi, pkt + nread, + pktlen - (size_t)nread, pktlen, ts); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + return rv; + } + + return (ngtcp2_ssize)pktlen; + } + + return nread; + } + + if (!(conn->flags & NGTCP2_CONN_FLAG_TRANSPORT_PARAM_RECVED)) { + return NGTCP2_ERR_REQUIRED_TRANSPORT_PARAM; + } + + rv = conn_handshake_completed(conn); + if (rv != 0) { + return rv; + } + conn->state = NGTCP2_CS_POST_HANDSHAKE; + + rv = conn_call_activate_dcid(conn, &conn->dcid.current); + if (rv != 0) { + return rv; + } + + rv = conn_process_buffered_protected_pkt(conn, &conn->pktns, ts); + if (rv != 0) { + return rv; + } + + ngtcp2_conn_discard_handshake_state(conn, ts); + + rv = conn_enqueue_handshake_done(conn); + if (rv != 0) { + return rv; + } + + if (!conn->local.settings.no_pmtud) { + rv = conn_start_pmtud(conn); + if (rv != 0) { + return rv; + } + } + + conn->pktns.rtb.persistent_congestion_start_ts = ts; + + /* Re-arm loss detection timer here after handshake has been + confirmed. */ + ngtcp2_conn_set_loss_detection_timer(conn, ts); + + return nread; + case NGTCP2_CS_CLOSING: + return NGTCP2_ERR_CLOSING; + case NGTCP2_CS_DRAINING: + return NGTCP2_ERR_DRAINING; + default: + return (ngtcp2_ssize)pktlen; + } +} + +int ngtcp2_conn_read_pkt_versioned(ngtcp2_conn *conn, const ngtcp2_path *path, + int pkt_info_version, + const ngtcp2_pkt_info *pi, + const uint8_t *pkt, size_t pktlen, + ngtcp2_tstamp ts) { + int rv = 0; + ngtcp2_ssize nread = 0; + const ngtcp2_pkt_info zero_pi = {0}; + (void)pkt_info_version; + + assert(!(conn->flags & NGTCP2_CONN_FLAG_PPE_PENDING)); + + conn_update_timestamp(conn, ts); + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, "recv packet len=%zu", + pktlen); + + if (pktlen == 0) { + return 0; + } + + /* client does not expect a packet from unknown path. */ + if (!conn->server && !ngtcp2_path_eq(&conn->dcid.current.ps.path, path) && + (!conn->pv || !ngtcp2_path_eq(&conn->pv->dcid.ps.path, path)) && + !conn_is_retired_path(conn, path)) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "ignore packet from unknown path"); + return 0; + } + + if (!pi) { + pi = &zero_pi; + } + + switch (conn->state) { + case NGTCP2_CS_CLIENT_INITIAL: + case NGTCP2_CS_CLIENT_WAIT_HANDSHAKE: + nread = conn_read_handshake(conn, path, pi, pkt, pktlen, ts); + if (nread < 0) { + return (int)nread; + } + + if ((size_t)nread == pktlen) { + return 0; + } + + assert(conn->pktns.crypto.rx.ckm); + + pkt += nread; + pktlen -= (size_t)nread; + + break; + case NGTCP2_CS_SERVER_INITIAL: + case NGTCP2_CS_SERVER_WAIT_HANDSHAKE: + if (!ngtcp2_path_eq(&conn->dcid.current.ps.path, path)) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "ignore packet from unknown path during handshake"); + + if (conn->state == NGTCP2_CS_SERVER_INITIAL && + ngtcp2_strm_rx_offset(&conn->in_pktns->crypto.strm) == 0 && + (!conn->in_pktns->crypto.strm.rx.rob || + !ngtcp2_rob_data_buffered(conn->in_pktns->crypto.strm.rx.rob))) { + return NGTCP2_ERR_DROP_CONN; + } + + return 0; + } + + nread = conn_read_handshake(conn, path, pi, pkt, pktlen, ts); + if (nread < 0) { + return (int)nread; + } + + if ((size_t)nread == pktlen) { + return 0; + } + + assert(conn->pktns.crypto.rx.ckm); + + pkt += nread; + pktlen -= (size_t)nread; + + break; + case NGTCP2_CS_CLOSING: + return NGTCP2_ERR_CLOSING; + case NGTCP2_CS_DRAINING: + return NGTCP2_ERR_DRAINING; + case NGTCP2_CS_POST_HANDSHAKE: + rv = conn_prepare_key_update(conn, ts); + if (rv != 0) { + return rv; + } + break; + default: + ngtcp2_unreachable(); + } + + return conn_recv_cpkt(conn, path, pi, pkt, pktlen, ts); +} + +/* + * conn_check_pkt_num_exhausted returns nonzero if packet number is + * exhausted in at least one of packet number space. + */ +static int conn_check_pkt_num_exhausted(ngtcp2_conn *conn) { + ngtcp2_pktns *in_pktns = conn->in_pktns; + ngtcp2_pktns *hs_pktns = conn->hs_pktns; + + return (in_pktns && in_pktns->tx.last_pkt_num == NGTCP2_MAX_PKT_NUM) || + (hs_pktns && hs_pktns->tx.last_pkt_num == NGTCP2_MAX_PKT_NUM) || + conn->pktns.tx.last_pkt_num == NGTCP2_MAX_PKT_NUM; +} + +/* + * conn_retransmit_retry_early retransmits 0RTT packet after Retry is + * received from server. + */ +static ngtcp2_ssize +conn_retransmit_retry_early(ngtcp2_conn *conn, ngtcp2_pkt_info *pi, + uint8_t *dest, size_t destlen, size_t dgram_offset, + uint8_t flags, ngtcp2_tstamp ts) { + return conn_write_pkt(conn, pi, dest, destlen, dgram_offset, NULL, + NGTCP2_PKT_0RTT, flags, ts); +} + +/* + * conn_handshake_probe_left returns nonzero if there are probe + * packets to be sent for Initial or Handshake packet number space + * left. + */ +static int conn_handshake_probe_left(ngtcp2_conn *conn) { + return (conn->in_pktns && conn->in_pktns->rtb.probe_pkt_left) || + conn->hs_pktns->rtb.probe_pkt_left; +} + +/* + * conn_validate_early_transport_params_limits validates that the + * limits in transport parameters remembered by client for early data + * are not reduced. This function is only used by client and should + * only be called when early data is accepted by server. + */ +static int conn_validate_early_transport_params_limits(ngtcp2_conn *conn) { + const ngtcp2_transport_params *params = conn->remote.transport_params; + + assert(!conn->server); + assert(params); + + if (conn->early.transport_params.active_connection_id_limit > + params->active_connection_id_limit || + conn->early.transport_params.initial_max_data > + params->initial_max_data || + conn->early.transport_params.initial_max_stream_data_bidi_local > + params->initial_max_stream_data_bidi_local || + conn->early.transport_params.initial_max_stream_data_bidi_remote > + params->initial_max_stream_data_bidi_remote || + conn->early.transport_params.initial_max_stream_data_uni > + params->initial_max_stream_data_uni || + conn->early.transport_params.initial_max_streams_bidi > + params->initial_max_streams_bidi || + conn->early.transport_params.initial_max_streams_uni > + params->initial_max_streams_uni || + conn->early.transport_params.max_datagram_frame_size > + params->max_datagram_frame_size) { + return NGTCP2_ERR_PROTO; + } + + return 0; +} + +/* + * conn_write_handshake writes QUIC handshake packets to the buffer + * pointed by |dest| of length |destlen|. |write_datalen| specifies + * the expected length of 0RTT packet payload. Specify 0 to + * |write_datalen| if there is no such data. + * + * This function returns the number of bytes written to the buffer, or + * one of the following negative error codes: + * + * NGTCP2_ERR_PKT_NUM_EXHAUSTED + * Packet number is exhausted. + * NGTCP2_ERR_NOMEM + * Out of memory + * NGTCP2_ERR_REQUIRED_TRANSPORT_PARAM + * Required transport parameter is missing. + * NGTCP2_CS_CLOSING + * Connection is in closing state. + * NGTCP2_CS_DRAINING + * Connection is in draining state. + * + * In addition to the above negative error codes, the same error codes + * from conn_recv_pkt may also be returned. + */ +static ngtcp2_ssize conn_write_handshake(ngtcp2_conn *conn, ngtcp2_pkt_info *pi, + uint8_t *dest, size_t destlen, + uint64_t write_datalen, + ngtcp2_tstamp ts) { + int rv; + ngtcp2_ssize res = 0, nwrite = 0, early_spktlen = 0; + size_t origlen = destlen; + uint64_t pending_early_datalen; + ngtcp2_dcid *dcid; + ngtcp2_preferred_addr *paddr; + + switch (conn->state) { + case NGTCP2_CS_CLIENT_INITIAL: + pending_early_datalen = conn_retry_early_payloadlen(conn); + if (pending_early_datalen) { + write_datalen = pending_early_datalen; + } + + if (!(conn->flags & NGTCP2_CONN_FLAG_RECV_RETRY)) { + nwrite = + conn_write_client_initial(conn, pi, dest, destlen, write_datalen, ts); + if (nwrite <= 0) { + return nwrite; + } + } else { + nwrite = + conn_write_handshake_pkt(conn, pi, dest, destlen, 0, NGTCP2_PKT_INITIAL, + NGTCP2_WRITE_PKT_FLAG_NONE, write_datalen, ts); + if (nwrite < 0) { + return nwrite; + } + } + + if (pending_early_datalen) { + early_spktlen = conn_retransmit_retry_early( + conn, pi, dest + nwrite, destlen - (size_t)nwrite, (size_t)nwrite, + nwrite ? NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING + : NGTCP2_WRITE_PKT_FLAG_NONE, + ts); + + if (early_spktlen < 0) { + assert(ngtcp2_err_is_fatal((int)early_spktlen)); + return early_spktlen; + } + } + + conn->state = NGTCP2_CS_CLIENT_WAIT_HANDSHAKE; + + res = nwrite + early_spktlen; + + return res; + case NGTCP2_CS_CLIENT_WAIT_HANDSHAKE: + pending_early_datalen = 0; + + if (!conn_handshake_probe_left(conn) && conn_cwnd_is_zero(conn)) { + destlen = 0; + } else { + if (!(conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_COMPLETED)) { + pending_early_datalen = conn_retry_early_payloadlen(conn); + if (pending_early_datalen) { + write_datalen = pending_early_datalen; + } + } + + nwrite = + conn_write_handshake_pkts(conn, pi, dest, destlen, write_datalen, ts); + if (nwrite < 0) { + return nwrite; + } + + res += nwrite; + dest += nwrite; + destlen -= (size_t)nwrite; + } + + if (!conn_is_tls_handshake_completed(conn)) { + if (pending_early_datalen && + !(conn->flags & NGTCP2_CONN_FLAG_EARLY_DATA_REJECTED)) { + nwrite = conn_retransmit_retry_early( + conn, pi, dest, destlen, (size_t)res, NGTCP2_WRITE_PKT_FLAG_NONE, ts); + if (nwrite < 0) { + return nwrite; + } + + res += nwrite; + } + + if (res == 0) { + nwrite = conn_write_handshake_ack_pkts(conn, pi, dest, origlen, ts); + if (nwrite < 0) { + return nwrite; + } + res = nwrite; + } + + return res; + } + + if (!(conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_COMPLETED)) { + return res; + } + + if (!(conn->flags & NGTCP2_CONN_FLAG_TRANSPORT_PARAM_RECVED)) { + return NGTCP2_ERR_REQUIRED_TRANSPORT_PARAM; + } + + if ((conn->flags & NGTCP2_CONN_FLAG_EARLY_KEY_INSTALLED) && + !(conn->flags & NGTCP2_CONN_FLAG_EARLY_DATA_REJECTED)) { + rv = conn_validate_early_transport_params_limits(conn); + if (rv != 0) { + return rv; + } + } + + /* Server might increase stream data limits. Extend it if we have + streams created for early data. */ + rv = conn_sync_stream_data_limit(conn); + if (rv != 0) { + return rv; + } + + conn->state = NGTCP2_CS_POST_HANDSHAKE; + + assert(conn->remote.transport_params); + + if (conn->remote.transport_params->preferred_addr_present) { + assert(!ngtcp2_ringbuf_full(&conn->dcid.unused.rb)); + + paddr = &conn->remote.transport_params->preferred_addr; + dcid = ngtcp2_ringbuf_push_back(&conn->dcid.unused.rb); + ngtcp2_dcid_init(dcid, 1, &paddr->cid, paddr->stateless_reset_token); + + rv = ngtcp2_gaptr_push(&conn->dcid.seqgap, 1, 1); + if (rv != 0) { + return (ngtcp2_ssize)rv; + } + } + + if (conn->remote.transport_params->stateless_reset_token_present) { + assert(conn->dcid.current.seq == 0); + assert(!(conn->dcid.current.flags & NGTCP2_DCID_FLAG_TOKEN_PRESENT)); + ngtcp2_dcid_set_token( + &conn->dcid.current, + conn->remote.transport_params->stateless_reset_token); + } + + rv = conn_call_activate_dcid(conn, &conn->dcid.current); + if (rv != 0) { + return rv; + } + + conn_process_early_rtb(conn); + + if (!conn->local.settings.no_pmtud) { + rv = conn_start_pmtud(conn); + if (rv != 0) { + return rv; + } + } + + return res; + case NGTCP2_CS_SERVER_INITIAL: + nwrite = + conn_write_handshake_pkts(conn, pi, dest, destlen, write_datalen, ts); + if (nwrite < 0) { + return nwrite; + } + + if (nwrite) { + conn->state = NGTCP2_CS_SERVER_WAIT_HANDSHAKE; + } + + return nwrite; + case NGTCP2_CS_SERVER_WAIT_HANDSHAKE: + if (conn_handshake_probe_left(conn) || !conn_cwnd_is_zero(conn)) { + nwrite = + conn_write_handshake_pkts(conn, pi, dest, destlen, write_datalen, ts); + if (nwrite < 0) { + return nwrite; + } + + res += nwrite; + dest += nwrite; + destlen -= (size_t)nwrite; + } + + if (res == 0) { + nwrite = conn_write_handshake_ack_pkts(conn, pi, dest, origlen, ts); + if (nwrite < 0) { + return nwrite; + } + + res += nwrite; + dest += nwrite; + origlen -= (size_t)nwrite; + } + + return res; + case NGTCP2_CS_CLOSING: + return NGTCP2_ERR_CLOSING; + case NGTCP2_CS_DRAINING: + return NGTCP2_ERR_DRAINING; + default: + return 0; + } +} + +/** + * @function + * + * `conn_client_write_handshake` writes client side handshake data and + * 0RTT packet. + * + * In order to send STREAM data in 0RTT packet, specify + * |vmsg|->stream. |vmsg|->stream.strm, |vmsg|->stream.fin, + * |vmsg|->stream.data, and |vmsg|->stream.datacnt are stream to which + * 0-RTT data is sent, whether it is a last data chunk in this stream, + * a vector of 0-RTT data, and its number of elements respectively. + * The amount of 0RTT data sent is assigned to + * *|vmsg|->stream.pdatalen. If no data is sent, -1 is assigned. + * Note that 0 length STREAM frame is allowed in QUIC, so 0 might be + * assigned to *|vmsg|->stream.pdatalen. + * + * This function returns 0 if it cannot write any frame because buffer + * is too small, or packet is congestion limited. Application should + * keep reading and wait for congestion window to grow. + * + * This function returns the number of bytes written to the buffer + * pointed by |dest| if it succeeds, or one of the following negative + * error codes: (TBD). + */ +static ngtcp2_ssize conn_client_write_handshake(ngtcp2_conn *conn, + ngtcp2_pkt_info *pi, + uint8_t *dest, size_t destlen, + ngtcp2_vmsg *vmsg, + ngtcp2_tstamp ts) { + int send_stream = 0; + int send_datagram = 0; + ngtcp2_ssize spktlen, early_spktlen; + uint64_t datalen; + uint64_t write_datalen = 0; + uint8_t wflags = NGTCP2_WRITE_PKT_FLAG_NONE; + int ppe_pending = (conn->flags & NGTCP2_CONN_FLAG_PPE_PENDING) != 0; + uint32_t version; + + assert(!conn->server); + + /* conn->early.ckm might be created in the first call of + conn_handshake(). Check it later. */ + if (vmsg) { + switch (vmsg->type) { + case NGTCP2_VMSG_TYPE_STREAM: + datalen = ngtcp2_vec_len(vmsg->stream.data, vmsg->stream.datacnt); + send_stream = conn_retry_early_payloadlen(conn) == 0; + if (send_stream) { + write_datalen = ngtcp2_min_uint64(datalen + NGTCP2_STREAM_OVERHEAD, + NGTCP2_MIN_COALESCED_PAYLOADLEN); + + if (vmsg->stream.flags & NGTCP2_WRITE_STREAM_FLAG_MORE) { + wflags |= NGTCP2_WRITE_PKT_FLAG_MORE; + } + } else { + vmsg = NULL; + } + break; + case NGTCP2_VMSG_TYPE_DATAGRAM: + datalen = ngtcp2_vec_len(vmsg->datagram.data, vmsg->datagram.datacnt); + send_datagram = conn_retry_early_payloadlen(conn) == 0; + if (send_datagram) { + write_datalen = datalen + NGTCP2_DATAGRAM_OVERHEAD; + + if (vmsg->datagram.flags & NGTCP2_WRITE_DATAGRAM_FLAG_MORE) { + wflags |= NGTCP2_WRITE_PKT_FLAG_MORE; + } + } else { + vmsg = NULL; + } + break; + } + } + + if (!ppe_pending) { + spktlen = conn_write_handshake(conn, pi, dest, destlen, write_datalen, ts); + + if (spktlen < 0) { + return spktlen; + } + + if ((conn->flags & NGTCP2_CONN_FLAG_EARLY_DATA_REJECTED) || + !conn->early.ckm || (!send_stream && !send_datagram)) { + return spktlen; + } + + /* If spktlen > 0, we are making a compound packet. If Initial + packet is written, we have to pad bytes to 0-RTT packet. */ + version = conn->negotiated_version ? conn->negotiated_version + : conn->client_chosen_version; + if (spktlen > 0 && + ngtcp2_pkt_get_type_long(version, dest[0]) == NGTCP2_PKT_INITIAL) { + wflags |= NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING; + conn->pkt.require_padding = 1; + } + } else { + assert(!conn->pktns.crypto.rx.ckm); + assert(!conn->pktns.crypto.tx.ckm); + assert(conn->early.ckm); + + if (conn->pkt.require_padding) { + wflags |= NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING; + } + spktlen = conn->pkt.hs_spktlen; + } + + dest += spktlen; + destlen -= (size_t)spktlen; + + if (conn_cwnd_is_zero(conn)) { + return spktlen; + } + + early_spktlen = conn_write_pkt(conn, pi, dest, destlen, (size_t)spktlen, vmsg, + NGTCP2_PKT_0RTT, wflags, ts); + if (early_spktlen < 0) { + switch (early_spktlen) { + case NGTCP2_ERR_STREAM_DATA_BLOCKED: + if (!(wflags & NGTCP2_WRITE_PKT_FLAG_MORE)) { + if (spktlen) { + return spktlen; + } + + break; + } + /* fall through */ + case NGTCP2_ERR_WRITE_MORE: + conn->pkt.hs_spktlen = spktlen; + break; + } + return early_spktlen; + } + + return spktlen + early_spktlen; +} + +void ngtcp2_conn_tls_handshake_completed(ngtcp2_conn *conn) { + conn->flags |= NGTCP2_CONN_FLAG_TLS_HANDSHAKE_COMPLETED; + if (conn->server) { + conn->flags |= NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED; + } +} + +int ngtcp2_conn_get_handshake_completed(ngtcp2_conn *conn) { + return conn_is_tls_handshake_completed(conn) && + (conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_COMPLETED); +} + +int ngtcp2_conn_sched_ack(ngtcp2_conn *conn, ngtcp2_acktr *acktr, + int64_t pkt_num, int active_ack, ngtcp2_tstamp ts) { + int rv; + (void)conn; + + rv = ngtcp2_acktr_add(acktr, pkt_num, active_ack, ts); + if (rv != 0) { + assert(rv != NGTCP2_ERR_INVALID_ARGUMENT); + return rv; + } + + return 0; +} + +int ngtcp2_accept(ngtcp2_pkt_hd *dest, const uint8_t *pkt, size_t pktlen) { + ngtcp2_ssize nread; + ngtcp2_pkt_hd hd, *p; + + if (dest) { + p = dest; + } else { + p = &hd; + } + + if (pktlen == 0 || (pkt[0] & NGTCP2_HEADER_FORM_BIT) == 0) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + nread = ngtcp2_pkt_decode_hd_long(p, pkt, pktlen); + if (nread < 0) { + return (int)nread; + } + + switch (p->type) { + case NGTCP2_PKT_INITIAL: + break; + case NGTCP2_PKT_0RTT: + /* 0-RTT packet may arrive before Initial packet due to + re-ordering. ngtcp2 does not buffer 0RTT packet unless the + very first Initial packet is received or token is received. + Previously, we returned NGTCP2_ERR_RETRY here, so that client + can resend 0RTT data. But it incurs 1RTT already and + diminishes the value of 0RTT. Therefore, we just discard the + packet here for now. */ + default: + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + if (pktlen < NGTCP2_MAX_UDP_PAYLOAD_SIZE || + (p->tokenlen == 0 && p->dcid.datalen < NGTCP2_MIN_INITIAL_DCIDLEN)) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + return 0; +} + +int ngtcp2_conn_install_initial_key( + ngtcp2_conn *conn, const ngtcp2_crypto_aead_ctx *rx_aead_ctx, + const uint8_t *rx_iv, const ngtcp2_crypto_cipher_ctx *rx_hp_ctx, + const ngtcp2_crypto_aead_ctx *tx_aead_ctx, const uint8_t *tx_iv, + const ngtcp2_crypto_cipher_ctx *tx_hp_ctx, size_t ivlen) { + ngtcp2_pktns *pktns = conn->in_pktns; + int rv; + + assert(ivlen >= 8); + assert(pktns); + + conn_call_delete_crypto_cipher_ctx(conn, &pktns->crypto.rx.hp_ctx); + pktns->crypto.rx.hp_ctx.native_handle = NULL; + + if (pktns->crypto.rx.ckm) { + conn_call_delete_crypto_aead_ctx(conn, &pktns->crypto.rx.ckm->aead_ctx); + ngtcp2_crypto_km_del(pktns->crypto.rx.ckm, conn->mem); + pktns->crypto.rx.ckm = NULL; + } + + conn_call_delete_crypto_cipher_ctx(conn, &pktns->crypto.tx.hp_ctx); + pktns->crypto.tx.hp_ctx.native_handle = NULL; + + if (pktns->crypto.tx.ckm) { + conn_call_delete_crypto_aead_ctx(conn, &pktns->crypto.tx.ckm->aead_ctx); + ngtcp2_crypto_km_del(pktns->crypto.tx.ckm, conn->mem); + pktns->crypto.tx.ckm = NULL; + } + + rv = ngtcp2_crypto_km_new(&pktns->crypto.rx.ckm, NULL, 0, NULL, rx_iv, ivlen, + conn->mem); + if (rv != 0) { + return rv; + } + + rv = ngtcp2_crypto_km_new(&pktns->crypto.tx.ckm, NULL, 0, NULL, tx_iv, ivlen, + conn->mem); + if (rv != 0) { + return rv; + } + + /* Take owner ship after we are sure that no failure occurs, so that + caller can delete these contexts on failure. */ + pktns->crypto.rx.ckm->aead_ctx = *rx_aead_ctx; + pktns->crypto.rx.hp_ctx = *rx_hp_ctx; + pktns->crypto.tx.ckm->aead_ctx = *tx_aead_ctx; + pktns->crypto.tx.hp_ctx = *tx_hp_ctx; + + return 0; +} + +int ngtcp2_conn_install_vneg_initial_key( + ngtcp2_conn *conn, uint32_t version, + const ngtcp2_crypto_aead_ctx *rx_aead_ctx, const uint8_t *rx_iv, + const ngtcp2_crypto_cipher_ctx *rx_hp_ctx, + const ngtcp2_crypto_aead_ctx *tx_aead_ctx, const uint8_t *tx_iv, + const ngtcp2_crypto_cipher_ctx *tx_hp_ctx, size_t ivlen) { + int rv; + + assert(ivlen >= 8); + + conn_call_delete_crypto_cipher_ctx(conn, &conn->vneg.rx.hp_ctx); + conn->vneg.rx.hp_ctx.native_handle = NULL; + + if (conn->vneg.rx.ckm) { + conn_call_delete_crypto_aead_ctx(conn, &conn->vneg.rx.ckm->aead_ctx); + ngtcp2_crypto_km_del(conn->vneg.rx.ckm, conn->mem); + conn->vneg.rx.ckm = NULL; + } + + conn_call_delete_crypto_cipher_ctx(conn, &conn->vneg.tx.hp_ctx); + conn->vneg.tx.hp_ctx.native_handle = NULL; + + if (conn->vneg.tx.ckm) { + conn_call_delete_crypto_aead_ctx(conn, &conn->vneg.tx.ckm->aead_ctx); + ngtcp2_crypto_km_del(conn->vneg.tx.ckm, conn->mem); + conn->vneg.tx.ckm = NULL; + } + + rv = ngtcp2_crypto_km_new(&conn->vneg.rx.ckm, NULL, 0, NULL, rx_iv, ivlen, + conn->mem); + if (rv != 0) { + return rv; + } + + rv = ngtcp2_crypto_km_new(&conn->vneg.tx.ckm, NULL, 0, NULL, tx_iv, ivlen, + conn->mem); + if (rv != 0) { + return rv; + } + + /* Take owner ship after we are sure that no failure occurs, so that + caller can delete these contexts on failure. */ + conn->vneg.rx.ckm->aead_ctx = *rx_aead_ctx; + conn->vneg.rx.hp_ctx = *rx_hp_ctx; + conn->vneg.tx.ckm->aead_ctx = *tx_aead_ctx; + conn->vneg.tx.hp_ctx = *tx_hp_ctx; + conn->vneg.version = version; + + return 0; +} + +int ngtcp2_conn_install_rx_handshake_key( + ngtcp2_conn *conn, const ngtcp2_crypto_aead_ctx *aead_ctx, const uint8_t *iv, + size_t ivlen, const ngtcp2_crypto_cipher_ctx *hp_ctx) { + ngtcp2_pktns *pktns = conn->hs_pktns; + int rv; + + assert(ivlen >= 8); + assert(pktns); + assert(!pktns->crypto.rx.hp_ctx.native_handle); + assert(!pktns->crypto.rx.ckm); + + rv = ngtcp2_crypto_km_new(&pktns->crypto.rx.ckm, NULL, 0, aead_ctx, iv, ivlen, + conn->mem); + if (rv != 0) { + return rv; + } + + pktns->crypto.rx.hp_ctx = *hp_ctx; + + rv = conn_call_recv_rx_key(conn, NGTCP2_ENCRYPTION_LEVEL_HANDSHAKE); + if (rv != 0) { + ngtcp2_crypto_km_del(pktns->crypto.rx.ckm, conn->mem); + pktns->crypto.rx.ckm = NULL; + + memset(&pktns->crypto.rx.hp_ctx, 0, sizeof(pktns->crypto.rx.hp_ctx)); + + return rv; + } + + return 0; +} + +int ngtcp2_conn_install_tx_handshake_key( + ngtcp2_conn *conn, const ngtcp2_crypto_aead_ctx *aead_ctx, const uint8_t *iv, + size_t ivlen, const ngtcp2_crypto_cipher_ctx *hp_ctx) { + ngtcp2_pktns *pktns = conn->hs_pktns; + int rv; + + assert(ivlen >= 8); + assert(pktns); + assert(!pktns->crypto.tx.hp_ctx.native_handle); + assert(!pktns->crypto.tx.ckm); + + rv = ngtcp2_crypto_km_new(&pktns->crypto.tx.ckm, NULL, 0, aead_ctx, iv, ivlen, + conn->mem); + if (rv != 0) { + return rv; + } + + pktns->crypto.tx.hp_ctx = *hp_ctx; + + if (conn->server) { + rv = ngtcp2_conn_commit_local_transport_params(conn); + if (rv != 0) { + return rv; + } + } + + rv = conn_call_recv_tx_key(conn, NGTCP2_ENCRYPTION_LEVEL_HANDSHAKE); + if (rv != 0) { + ngtcp2_crypto_km_del(pktns->crypto.tx.ckm, conn->mem); + pktns->crypto.tx.ckm = NULL; + + memset(&pktns->crypto.tx.hp_ctx, 0, sizeof(pktns->crypto.tx.hp_ctx)); + + return rv; + } + + return 0; +} + +int ngtcp2_conn_install_0rtt_key(ngtcp2_conn *conn, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *iv, size_t ivlen, + const ngtcp2_crypto_cipher_ctx *hp_ctx) { + int rv; + + assert(ivlen >= 8); + assert(!conn->early.hp_ctx.native_handle); + assert(!conn->early.ckm); + + rv = ngtcp2_crypto_km_new(&conn->early.ckm, NULL, 0, aead_ctx, iv, ivlen, + conn->mem); + if (rv != 0) { + return rv; + } + + conn->early.hp_ctx = *hp_ctx; + + conn->flags |= NGTCP2_CONN_FLAG_EARLY_KEY_INSTALLED; + + if (conn->server) { + rv = conn_call_recv_rx_key(conn, NGTCP2_ENCRYPTION_LEVEL_0RTT); + } else { + rv = conn_call_recv_tx_key(conn, NGTCP2_ENCRYPTION_LEVEL_0RTT); + } + if (rv != 0) { + ngtcp2_crypto_km_del(conn->early.ckm, conn->mem); + conn->early.ckm = NULL; + + memset(&conn->early.hp_ctx, 0, sizeof(conn->early.hp_ctx)); + + return rv; + } + + return 0; +} + +int ngtcp2_conn_install_rx_key(ngtcp2_conn *conn, const uint8_t *secret, + size_t secretlen, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *iv, size_t ivlen, + const ngtcp2_crypto_cipher_ctx *hp_ctx) { + ngtcp2_pktns *pktns = &conn->pktns; + int rv; + + assert(ivlen >= 8); + assert(!pktns->crypto.rx.hp_ctx.native_handle); + assert(!pktns->crypto.rx.ckm); + + rv = ngtcp2_crypto_km_new(&pktns->crypto.rx.ckm, secret, secretlen, aead_ctx, + iv, ivlen, conn->mem); + if (rv != 0) { + return rv; + } + + pktns->crypto.rx.hp_ctx = *hp_ctx; + + if (!conn->server) { + if (conn->remote.pending_transport_params) { + ngtcp2_transport_params_del(conn->remote.transport_params, conn->mem); + + conn->remote.transport_params = conn->remote.pending_transport_params; + conn->remote.pending_transport_params = NULL; + conn_sync_stream_id_limit(conn); + conn->tx.max_offset = conn->remote.transport_params->initial_max_data; + } + + if (conn->early.ckm) { + conn_discard_early_key(conn); + } + } + + rv = conn_call_recv_rx_key(conn, NGTCP2_ENCRYPTION_LEVEL_1RTT); + if (rv != 0) { + ngtcp2_crypto_km_del(pktns->crypto.rx.ckm, conn->mem); + pktns->crypto.rx.ckm = NULL; + + memset(&pktns->crypto.rx.hp_ctx, 0, sizeof(pktns->crypto.rx.hp_ctx)); + + return rv; + } + + return 0; +} + +int ngtcp2_conn_install_tx_key(ngtcp2_conn *conn, const uint8_t *secret, + size_t secretlen, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *iv, size_t ivlen, + const ngtcp2_crypto_cipher_ctx *hp_ctx) { + ngtcp2_pktns *pktns = &conn->pktns; + int rv; + + assert(ivlen >= 8); + assert(!pktns->crypto.tx.hp_ctx.native_handle); + assert(!pktns->crypto.tx.ckm); + + rv = ngtcp2_crypto_km_new(&pktns->crypto.tx.ckm, secret, secretlen, aead_ctx, + iv, ivlen, conn->mem); + if (rv != 0) { + return rv; + } + + pktns->crypto.tx.hp_ctx = *hp_ctx; + + if (conn->server) { + if (conn->remote.pending_transport_params) { + ngtcp2_transport_params_del(conn->remote.transport_params, conn->mem); + + conn->remote.transport_params = conn->remote.pending_transport_params; + conn->remote.pending_transport_params = NULL; + conn_sync_stream_id_limit(conn); + conn->tx.max_offset = conn->remote.transport_params->initial_max_data; + } + } else if (conn->early.ckm) { + conn_discard_early_key(conn); + } + + rv = conn_call_recv_tx_key(conn, NGTCP2_ENCRYPTION_LEVEL_1RTT); + if (rv != 0) { + ngtcp2_crypto_km_del(pktns->crypto.tx.ckm, conn->mem); + pktns->crypto.tx.ckm = NULL; + + memset(&pktns->crypto.tx.hp_ctx, 0, sizeof(pktns->crypto.tx.hp_ctx)); + + return rv; + } + + return 0; +} + +static int conn_initiate_key_update(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + ngtcp2_tstamp confirmed_ts = conn->crypto.key_update.confirmed_ts; + ngtcp2_duration pto = conn_compute_pto(conn, &conn->pktns); + + assert(conn->state == NGTCP2_CS_POST_HANDSHAKE); + + if (!(conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED) || + (conn->flags & NGTCP2_CONN_FLAG_KEY_UPDATE_NOT_CONFIRMED) || + !conn->crypto.key_update.new_tx_ckm || + !conn->crypto.key_update.new_rx_ckm || + ngtcp2_tstamp_not_elapsed(confirmed_ts, 3 * pto, ts)) { + return NGTCP2_ERR_INVALID_STATE; + } + + conn_rotate_keys(conn, NGTCP2_MAX_PKT_NUM, /* initiator = */ 1); + + return 0; +} + +int ngtcp2_conn_initiate_key_update(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + conn_update_timestamp(conn, ts); + + return conn_initiate_key_update(conn, ts); +} + +/* + * conn_retire_stale_bound_dcid retires stale destination connection + * ID in conn->dcid.bound to keep some unused destination connection + * IDs available. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int conn_retire_stale_bound_dcid(ngtcp2_conn *conn, + ngtcp2_duration timeout, + ngtcp2_tstamp ts) { + size_t i; + ngtcp2_dcid *dcid, *last; + int rv; + + for (i = 0; i < ngtcp2_ringbuf_len(&conn->dcid.bound.rb);) { + dcid = ngtcp2_ringbuf_get(&conn->dcid.bound.rb, i); + + assert(dcid->cid.datalen); + + if (ngtcp2_tstamp_not_elapsed(dcid->bound_ts, timeout, ts)) { + ++i; + continue; + } + + rv = conn_retire_dcid_seq(conn, dcid->seq); + if (rv != 0) { + return rv; + } + + if (i == 0) { + ngtcp2_ringbuf_pop_front(&conn->dcid.bound.rb); + continue; + } + + if (i == ngtcp2_ringbuf_len(&conn->dcid.bound.rb) - 1) { + ngtcp2_ringbuf_pop_back(&conn->dcid.bound.rb); + break; + } + + last = ngtcp2_ringbuf_get(&conn->dcid.bound.rb, + ngtcp2_ringbuf_len(&conn->dcid.bound.rb) - 1); + ngtcp2_dcid_copy(dcid, last); + ngtcp2_ringbuf_pop_back(&conn->dcid.bound.rb); + } + + return 0; +} + +ngtcp2_tstamp ngtcp2_conn_loss_detection_expiry(ngtcp2_conn *conn) { + return conn->cstat.loss_detection_timer; +} + +ngtcp2_tstamp ngtcp2_conn_internal_expiry(ngtcp2_conn *conn) { + ngtcp2_tstamp res = UINT64_MAX; + ngtcp2_duration pto = conn_compute_pto(conn, &conn->pktns); + ngtcp2_scid *scid; + ngtcp2_dcid *dcid; + size_t i, len; + + if (conn->pv) { + res = ngtcp2_pv_next_expiry(conn->pv); + } + + if (conn->pmtud) { + res = ngtcp2_min_uint64(res, conn->pmtud->expiry); + } + + if (!ngtcp2_pq_empty(&conn->scid.used)) { + scid = ngtcp2_struct_of(ngtcp2_pq_top(&conn->scid.used), ngtcp2_scid, pe); + if (scid->retired_ts != UINT64_MAX) { + res = ngtcp2_min_uint64(res, scid->retired_ts + pto); + } + } + + if (ngtcp2_ringbuf_len(&conn->dcid.retired.rb)) { + dcid = ngtcp2_ringbuf_get(&conn->dcid.retired.rb, 0); + res = ngtcp2_min_uint64(res, dcid->retired_ts + pto); + } + + if (conn->dcid.current.cid.datalen) { + len = ngtcp2_ringbuf_len(&conn->dcid.bound.rb); + for (i = 0; i < len; ++i) { + dcid = ngtcp2_ringbuf_get(&conn->dcid.bound.rb, i); + + assert(dcid->cid.datalen); + assert(dcid->bound_ts != UINT64_MAX); + + res = ngtcp2_min_uint64(res, dcid->bound_ts + 3 * pto); + } + } + + if (conn->server && conn->early.ckm && + conn->early.discard_started_ts != UINT64_MAX) { + res = ngtcp2_min_uint64(res, conn->early.discard_started_ts + 3 * pto); + } + + return res; +} + +ngtcp2_tstamp ngtcp2_conn_ack_delay_expiry(ngtcp2_conn *conn) { + ngtcp2_acktr *acktr = &conn->pktns.acktr; + + if (!(acktr->flags & NGTCP2_ACKTR_FLAG_CANCEL_TIMER) && + acktr->first_unacked_ts != UINT64_MAX) { + return acktr->first_unacked_ts + conn_compute_ack_delay(conn); + } + return UINT64_MAX; +} + +static ngtcp2_tstamp conn_handshake_expiry(ngtcp2_conn *conn) { + if (conn_is_tls_handshake_completed(conn) || + conn->local.settings.handshake_timeout == UINT64_MAX || + conn->local.settings.initial_ts >= + UINT64_MAX - conn->local.settings.handshake_timeout) { + return UINT64_MAX; + } + + return conn->local.settings.initial_ts + + conn->local.settings.handshake_timeout; +} + +ngtcp2_tstamp ngtcp2_conn_get_expiry(ngtcp2_conn *conn) { + ngtcp2_tstamp res = ngtcp2_min_uint64(ngtcp2_conn_loss_detection_expiry(conn), + ngtcp2_conn_ack_delay_expiry(conn)); + res = ngtcp2_min_uint64(res, ngtcp2_conn_internal_expiry(conn)); + res = ngtcp2_min_uint64(res, ngtcp2_conn_lost_pkt_expiry(conn)); + res = ngtcp2_min_uint64(res, conn_keep_alive_expiry(conn)); + res = ngtcp2_min_uint64(res, conn_handshake_expiry(conn)); + res = ngtcp2_min_uint64(res, ngtcp2_conn_get_idle_expiry(conn)); + return ngtcp2_min_uint64(res, conn->tx.pacing.next_ts); +} + +int ngtcp2_conn_handle_expiry(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + int rv; + ngtcp2_duration pto; + + conn_update_timestamp(conn, ts); + + pto = conn_compute_pto(conn, &conn->pktns); + + assert(!(conn->flags & NGTCP2_CONN_FLAG_PPE_PENDING)); + + if (ngtcp2_conn_get_idle_expiry(conn) <= ts) { + return NGTCP2_ERR_IDLE_CLOSE; + } + + ngtcp2_conn_cancel_expired_ack_delay_timer(conn, ts); + + conn_cancel_expired_keep_alive_timer(conn, ts); + + conn_cancel_expired_pkt_tx_timer(conn, ts); + + ngtcp2_conn_remove_lost_pkt(conn, ts); + + if (conn->pv) { + ngtcp2_pv_cancel_expired_timer(conn->pv, ts); + } + + if (conn->pmtud) { + ngtcp2_pmtud_handle_expiry(conn->pmtud, ts); + if (ngtcp2_pmtud_finished(conn->pmtud)) { + ngtcp2_conn_stop_pmtud(conn); + } + } + + if (ngtcp2_conn_loss_detection_expiry(conn) <= ts) { + rv = ngtcp2_conn_on_loss_detection_timer(conn, ts); + if (rv != 0) { + return rv; + } + } + + if (conn->dcid.current.cid.datalen) { + rv = conn_retire_stale_bound_dcid(conn, 3 * pto, ts); + if (rv != 0) { + return rv; + } + } + + rv = conn_remove_retired_connection_id(conn, pto, ts); + if (rv != 0) { + return rv; + } + + if (conn->server && conn->early.ckm && + ngtcp2_tstamp_elapsed(conn->early.discard_started_ts, 3 * pto, ts)) { + conn_discard_early_key(conn); + } + + if (!conn_is_tls_handshake_completed(conn) && + ngtcp2_tstamp_elapsed(conn->local.settings.initial_ts, + conn->local.settings.handshake_timeout, ts)) { + return NGTCP2_ERR_HANDSHAKE_TIMEOUT; + } + + return 0; +} + +static void acktr_cancel_expired_ack_delay_timer(ngtcp2_acktr *acktr, + ngtcp2_duration max_ack_delay, + ngtcp2_tstamp ts) { + if (!(acktr->flags & NGTCP2_ACKTR_FLAG_CANCEL_TIMER) && + ngtcp2_tstamp_elapsed(acktr->first_unacked_ts, max_ack_delay, ts)) { + acktr->flags |= NGTCP2_ACKTR_FLAG_CANCEL_TIMER; + } +} + +void ngtcp2_conn_cancel_expired_ack_delay_timer(ngtcp2_conn *conn, + ngtcp2_tstamp ts) { + ngtcp2_duration ack_delay = conn_compute_ack_delay(conn); + + if (conn->in_pktns) { + acktr_cancel_expired_ack_delay_timer(&conn->in_pktns->acktr, 0, ts); + } + if (conn->hs_pktns) { + acktr_cancel_expired_ack_delay_timer(&conn->hs_pktns->acktr, 0, ts); + } + acktr_cancel_expired_ack_delay_timer(&conn->pktns.acktr, ack_delay, ts); +} + +ngtcp2_tstamp ngtcp2_conn_lost_pkt_expiry(ngtcp2_conn *conn) { + ngtcp2_tstamp res = UINT64_MAX, ts; + + if (conn->in_pktns) { + ts = ngtcp2_rtb_lost_pkt_ts(&conn->in_pktns->rtb); + if (ts != UINT64_MAX) { + ts += conn_compute_pto(conn, conn->in_pktns); + res = ngtcp2_min_uint64(res, ts); + } + } + + if (conn->hs_pktns) { + ts = ngtcp2_rtb_lost_pkt_ts(&conn->hs_pktns->rtb); + if (ts != UINT64_MAX) { + ts += conn_compute_pto(conn, conn->hs_pktns); + res = ngtcp2_min_uint64(res, ts); + } + } + + ts = ngtcp2_rtb_lost_pkt_ts(&conn->pktns.rtb); + if (ts != UINT64_MAX) { + ts += conn_compute_pto(conn, &conn->pktns); + res = ngtcp2_min_uint64(res, ts); + } + + return res; +} + +void ngtcp2_conn_remove_lost_pkt(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + ngtcp2_duration pto; + + if (conn->in_pktns) { + pto = conn_compute_pto(conn, conn->in_pktns); + ngtcp2_rtb_remove_expired_lost_pkt(&conn->in_pktns->rtb, pto, ts); + } + if (conn->hs_pktns) { + pto = conn_compute_pto(conn, conn->hs_pktns); + ngtcp2_rtb_remove_expired_lost_pkt(&conn->hs_pktns->rtb, pto, ts); + } + pto = conn_compute_pto(conn, &conn->pktns); + ngtcp2_rtb_remove_expired_lost_pkt(&conn->pktns.rtb, pto, ts); +} + +/* + * select_preferred_version selects the most preferred version. + * |fallback_version| is chosen if no preference is made, or + * |preferred_versions| does not include any of |chosen_version| or + * |available_versions|. |chosen_version| is treated as an extra + * other version. + */ +static uint32_t select_preferred_version(const uint32_t *preferred_versions, + size_t preferred_versionslen, + uint32_t chosen_version, + const uint8_t *available_versions, + size_t available_versionslen, + uint32_t fallback_version) { + size_t i, j; + const uint8_t *p; + uint32_t v; + + if (!preferred_versionslen || + (!available_versionslen && chosen_version == fallback_version)) { + return fallback_version; + } + + for (i = 0; i < preferred_versionslen; ++i) { + if (preferred_versions[i] == chosen_version) { + return chosen_version; + } + for (j = 0, p = available_versions; j < available_versionslen; + j += sizeof(uint32_t)) { + p = ngtcp2_get_uint32be(&v, p); + + if (preferred_versions[i] == v) { + return v; + } + } + } + + return fallback_version; +} + +/* + * conn_client_validate_transport_params validates |params| as client. + * |params| must be sent with Encrypted Extensions. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_TRANSPORT_PARAM + * params contains preferred address but server chose zero-length + * connection ID. + * NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE + * Validation against version negotiation parameters failed. + */ +static int +conn_client_validate_transport_params(ngtcp2_conn *conn, + const ngtcp2_transport_params *params) { + if (!params->original_dcid_present) { + return NGTCP2_ERR_REQUIRED_TRANSPORT_PARAM; + } + + if (!ngtcp2_cid_eq(&conn->rcid, ¶ms->original_dcid)) { + return NGTCP2_ERR_TRANSPORT_PARAM; + } + + if (conn->flags & NGTCP2_CONN_FLAG_RECV_RETRY) { + if (!params->retry_scid_present) { + return NGTCP2_ERR_TRANSPORT_PARAM; + } + if (!ngtcp2_cid_eq(&conn->retry_scid, ¶ms->retry_scid)) { + return NGTCP2_ERR_TRANSPORT_PARAM; + } + } else if (params->retry_scid_present) { + return NGTCP2_ERR_TRANSPORT_PARAM; + } + + if (params->preferred_addr_present && conn->dcid.current.cid.datalen == 0) { + return NGTCP2_ERR_TRANSPORT_PARAM; + } + + if (params->version_info_present) { + if (conn->negotiated_version != params->version_info.chosen_version) { + return NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE; + } + + assert(vneg_available_versions_includes(conn->vneg.available_versions, + conn->vneg.available_versionslen, + conn->negotiated_version)); + } else if (conn->client_chosen_version != conn->negotiated_version) { + return NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE; + } + + /* When client reacted upon Version Negotiation */ + if (conn->local.settings.original_version != conn->client_chosen_version) { + if (!params->version_info_present) { + assert(conn->client_chosen_version == conn->negotiated_version); + + /* QUIC v1 is treated specially. If version_info is missing, no + further validation is necessary. See + https://datatracker.ietf.org/doc/html/rfc9368#section-8 + */ + if (conn->client_chosen_version == NGTCP2_PROTO_VER_V1) { + return 0; + } + + return NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE; + } + + /* Server choose original version after Version Negotiation. RFC + 9368 does not say this particular case, but this smells like + misbehaved server because server should accept original_version + in the original connection. */ + if (conn->local.settings.original_version == + params->version_info.chosen_version) { + return NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE; + } + + /* Check version downgrade on incompatible version negotiation. */ + if (params->version_info.available_versionslen == 0) { + return NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE; + } + + if (conn->client_chosen_version != + select_preferred_version(conn->vneg.preferred_versions, + conn->vneg.preferred_versionslen, + params->version_info.chosen_version, + params->version_info.available_versions, + params->version_info.available_versionslen, + /* fallback_version = */ 0)) { + return NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE; + } + } + + return 0; +} + +uint32_t +ngtcp2_conn_server_negotiate_version(ngtcp2_conn *conn, + const ngtcp2_version_info *version_info) { + assert(conn->server); + assert(conn->client_chosen_version == version_info->chosen_version); + + return select_preferred_version( + conn->vneg.preferred_versions, conn->vneg.preferred_versionslen, + version_info->chosen_version, version_info->available_versions, + version_info->available_versionslen, version_info->chosen_version); +} + +int ngtcp2_conn_set_remote_transport_params( + ngtcp2_conn *conn, const ngtcp2_transport_params *params) { + int rv; + + /* We expect this function is called once per QUIC connection, but + GnuTLS server seems to call TLS extension callback twice if it + sends HelloRetryRequest. In practice, same QUIC transport + parameters are sent in the 2nd client flight, just returning 0 + would cause no harm. */ + if (conn->flags & NGTCP2_CONN_FLAG_TRANSPORT_PARAM_RECVED) { + return 0; + } + + if (!params->initial_scid_present) { + return NGTCP2_ERR_REQUIRED_TRANSPORT_PARAM; + } + + /* Assume that ngtcp2_transport_params_decode sets default value if + active_connection_id_limit is omitted. */ + if (params->active_connection_id_limit < + NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT) { + return NGTCP2_ERR_TRANSPORT_PARAM; + } + + /* We assume that conn->dcid.current.cid is still the initial one. + This requires that transport parameter must be fed into + ngtcp2_conn as early as possible. */ + if (!ngtcp2_cid_eq(&conn->dcid.current.cid, ¶ms->initial_scid)) { + return NGTCP2_ERR_TRANSPORT_PARAM; + } + + if (params->max_udp_payload_size < NGTCP2_MAX_UDP_PAYLOAD_SIZE) { + return NGTCP2_ERR_TRANSPORT_PARAM; + } + + if (conn->server) { + if (params->original_dcid_present || + params->stateless_reset_token_present || + params->preferred_addr_present || params->retry_scid_present) { + return NGTCP2_ERR_TRANSPORT_PARAM; + } + + if (params->version_info_present) { + if (!vneg_available_versions_includes( + params->version_info.available_versions, + params->version_info.available_versionslen, + params->version_info.chosen_version)) { + return NGTCP2_ERR_TRANSPORT_PARAM; + } + + if (params->version_info.chosen_version != conn->client_chosen_version) { + return NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE; + } + + conn->negotiated_version = + ngtcp2_conn_server_negotiate_version(conn, ¶ms->version_info); + if (conn->negotiated_version != conn->client_chosen_version) { + rv = conn_call_version_negotiation(conn, conn->negotiated_version, + &conn->rcid); + if (rv != 0) { + return rv; + } + } + } else { + conn->negotiated_version = conn->client_chosen_version; + } + + conn->local.transport_params.version_info.chosen_version = + conn->negotiated_version; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "the negotiated version is 0x%08x", + conn->negotiated_version); + } else { + rv = conn_client_validate_transport_params(conn, params); + if (rv != 0) { + return rv; + } + } + + ngtcp2_log_remote_tp(&conn->log, params); + + ngtcp2_qlog_parameters_set_transport_params(&conn->qlog, params, conn->server, + NGTCP2_QLOG_SIDE_REMOTE); + + if ((conn->server && conn->pktns.crypto.tx.ckm) || + (!conn->server && conn->pktns.crypto.rx.ckm)) { + ngtcp2_transport_params_del(conn->remote.transport_params, conn->mem); + conn->remote.transport_params = NULL; + + rv = ngtcp2_transport_params_copy_new(&conn->remote.transport_params, + params, conn->mem); + if (rv != 0) { + return rv; + } + conn_sync_stream_id_limit(conn); + conn->tx.max_offset = conn->remote.transport_params->initial_max_data; + } else { + assert(!conn->remote.pending_transport_params); + + rv = ngtcp2_transport_params_copy_new( + &conn->remote.pending_transport_params, params, conn->mem); + if (rv != 0) { + return rv; + } + } + + conn->flags |= NGTCP2_CONN_FLAG_TRANSPORT_PARAM_RECVED; + + return 0; +} + +int ngtcp2_conn_decode_and_set_remote_transport_params(ngtcp2_conn *conn, + const uint8_t *data, + size_t datalen) { + ngtcp2_transport_params params; + int rv; + + rv = ngtcp2_transport_params_decode(¶ms, data, datalen); + if (rv != 0) { + return rv; + } + + return ngtcp2_conn_set_remote_transport_params(conn, ¶ms); +} + +const ngtcp2_transport_params * +ngtcp2_conn_get_remote_transport_params(ngtcp2_conn *conn) { + if (conn->remote.pending_transport_params) { + return conn->remote.pending_transport_params; + } + + return conn->remote.transport_params; +} + +ngtcp2_ssize ngtcp2_conn_encode_0rtt_transport_params(ngtcp2_conn *conn, + uint8_t *dest, + size_t destlen) { + ngtcp2_transport_params params, *src; + + if (conn->server) { + src = &conn->local.transport_params; + } else { + assert(conn->remote.transport_params); + + src = conn->remote.transport_params; + } + + ngtcp2_transport_params_default(¶ms); + + params.initial_max_streams_bidi = src->initial_max_streams_bidi; + params.initial_max_streams_uni = src->initial_max_streams_uni; + params.initial_max_stream_data_bidi_local = + src->initial_max_stream_data_bidi_local; + params.initial_max_stream_data_bidi_remote = + src->initial_max_stream_data_bidi_remote; + params.initial_max_stream_data_uni = src->initial_max_stream_data_uni; + params.initial_max_data = src->initial_max_data; + params.active_connection_id_limit = src->active_connection_id_limit; + params.max_datagram_frame_size = src->max_datagram_frame_size; + + if (conn->server) { + params.max_idle_timeout = src->max_idle_timeout; + params.max_udp_payload_size = src->max_udp_payload_size; + params.disable_active_migration = src->disable_active_migration; + } + + return ngtcp2_transport_params_encode(dest, destlen, ¶ms); +} + +int ngtcp2_conn_decode_and_set_0rtt_transport_params(ngtcp2_conn *conn, + const uint8_t *data, + size_t datalen) { + ngtcp2_transport_params params; + int rv; + + rv = ngtcp2_transport_params_decode(¶ms, data, datalen); + if (rv != 0) { + return rv; + } + + return ngtcp2_conn_set_0rtt_remote_transport_params(conn, ¶ms); +} + +int ngtcp2_conn_set_0rtt_remote_transport_params( + ngtcp2_conn *conn, const ngtcp2_transport_params *params) { + ngtcp2_transport_params *p; + + assert(!conn->server); + assert(!conn->remote.transport_params); + + /* Assume that all pointer fields in p are NULL */ + p = ngtcp2_mem_calloc(conn->mem, 1, sizeof(*p)); + if (p == NULL) { + return NGTCP2_ERR_NOMEM; + } + + conn->remote.transport_params = p; + + ngtcp2_transport_params_default(conn->remote.transport_params); + + p->initial_max_streams_bidi = params->initial_max_streams_bidi; + p->initial_max_streams_uni = params->initial_max_streams_uni; + p->initial_max_stream_data_bidi_local = + params->initial_max_stream_data_bidi_local; + p->initial_max_stream_data_bidi_remote = + params->initial_max_stream_data_bidi_remote; + p->initial_max_stream_data_uni = params->initial_max_stream_data_uni; + p->initial_max_data = params->initial_max_data; + /* we might hit garbage, then set the sane default. */ + p->active_connection_id_limit = + ngtcp2_max_uint64(NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT, + params->active_connection_id_limit); + p->max_datagram_frame_size = params->max_datagram_frame_size; + + /* we might hit garbage, then set the sane default. */ + if (params->max_udp_payload_size) { + p->max_udp_payload_size = ngtcp2_max_uint64(NGTCP2_MAX_UDP_PAYLOAD_SIZE, + params->max_udp_payload_size); + } + + /* These parameters are treated specially. If server accepts early + data, it must not set values for these parameters that are + smaller than these remembered values. */ + conn->early.transport_params.initial_max_streams_bidi = + params->initial_max_streams_bidi; + conn->early.transport_params.initial_max_streams_uni = + params->initial_max_streams_uni; + conn->early.transport_params.initial_max_stream_data_bidi_local = + params->initial_max_stream_data_bidi_local; + conn->early.transport_params.initial_max_stream_data_bidi_remote = + params->initial_max_stream_data_bidi_remote; + conn->early.transport_params.initial_max_stream_data_uni = + params->initial_max_stream_data_uni; + conn->early.transport_params.initial_max_data = params->initial_max_data; + conn->early.transport_params.active_connection_id_limit = + params->active_connection_id_limit; + conn->early.transport_params.max_datagram_frame_size = + params->max_datagram_frame_size; + + conn_sync_stream_id_limit(conn); + + conn->tx.max_offset = p->initial_max_data; + + ngtcp2_qlog_parameters_set_transport_params(&conn->qlog, p, conn->server, + NGTCP2_QLOG_SIDE_REMOTE); + + return 0; +} + +int ngtcp2_conn_set_local_transport_params_versioned( + ngtcp2_conn *conn, int transport_params_version, + const ngtcp2_transport_params *params) { + ngtcp2_transport_params paramsbuf; + + params = ngtcp2_transport_params_convert_to_latest( + ¶msbuf, transport_params_version, params); + + assert(conn->server); + assert(params->active_connection_id_limit >= + NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT); + assert(params->active_connection_id_limit <= NGTCP2_MAX_DCID_POOL_SIZE); + + if (conn->hs_pktns == NULL || conn->hs_pktns->crypto.tx.ckm) { + return NGTCP2_ERR_INVALID_STATE; + } + + conn_set_local_transport_params(conn, params); + + return 0; +} + +int ngtcp2_conn_commit_local_transport_params(ngtcp2_conn *conn) { + const ngtcp2_mem *mem = conn->mem; + ngtcp2_transport_params *params = &conn->local.transport_params; + ngtcp2_scid *scident; + int rv; + + assert(1 == ngtcp2_ksl_len(&conn->scid.set)); + + params->initial_scid = conn->oscid; + params->initial_scid_present = 1; + + if (conn->oscid.datalen == 0) { + params->preferred_addr_present = 0; + } + + if (conn->server && params->preferred_addr_present) { + scident = ngtcp2_mem_malloc(mem, sizeof(*scident)); + if (scident == NULL) { + return NGTCP2_ERR_NOMEM; + } + + ngtcp2_scid_init(scident, 1, ¶ms->preferred_addr.cid); + + rv = ngtcp2_ksl_insert(&conn->scid.set, NULL, &scident->cid, scident); + if (rv != 0) { + ngtcp2_mem_free(mem, scident); + return rv; + } + + conn->scid.last_seq = 1; + } + + conn->rx.window = conn->rx.unsent_max_offset = conn->rx.max_offset = + params->initial_max_data; + conn->remote.bidi.unsent_max_streams = params->initial_max_streams_bidi; + conn->remote.bidi.max_streams = params->initial_max_streams_bidi; + conn->remote.uni.unsent_max_streams = params->initial_max_streams_uni; + conn->remote.uni.max_streams = params->initial_max_streams_uni; + + conn->flags |= NGTCP2_CONN_FLAG_LOCAL_TRANSPORT_PARAMS_COMMITTED; + + ngtcp2_qlog_parameters_set_transport_params(&conn->qlog, params, conn->server, + NGTCP2_QLOG_SIDE_LOCAL); + + return 0; +} + +const ngtcp2_transport_params * +ngtcp2_conn_get_local_transport_params(ngtcp2_conn *conn) { + return &conn->local.transport_params; +} + +ngtcp2_ssize ngtcp2_conn_encode_local_transport_params(ngtcp2_conn *conn, + uint8_t *dest, + size_t destlen) { + return ngtcp2_transport_params_encode(dest, destlen, + &conn->local.transport_params); +} + +int ngtcp2_conn_open_bidi_stream(ngtcp2_conn *conn, int64_t *pstream_id, + void *stream_user_data) { + int rv; + ngtcp2_strm *strm; + + if (ngtcp2_conn_get_streams_bidi_left(conn) == 0) { + return NGTCP2_ERR_STREAM_ID_BLOCKED; + } + + strm = ngtcp2_objalloc_strm_get(&conn->strm_objalloc); + if (strm == NULL) { + return NGTCP2_ERR_NOMEM; + } + + rv = ngtcp2_conn_init_stream(conn, strm, conn->local.bidi.next_stream_id, + stream_user_data); + if (rv != 0) { + ngtcp2_objalloc_strm_release(&conn->strm_objalloc, strm); + return rv; + } + + *pstream_id = conn->local.bidi.next_stream_id; + conn->local.bidi.next_stream_id += 4; + + return 0; +} + +int ngtcp2_conn_open_uni_stream(ngtcp2_conn *conn, int64_t *pstream_id, + void *stream_user_data) { + int rv; + ngtcp2_strm *strm; + + if (ngtcp2_conn_get_streams_uni_left(conn) == 0) { + return NGTCP2_ERR_STREAM_ID_BLOCKED; + } + + strm = ngtcp2_objalloc_strm_get(&conn->strm_objalloc); + if (strm == NULL) { + return NGTCP2_ERR_NOMEM; + } + + rv = ngtcp2_conn_init_stream(conn, strm, conn->local.uni.next_stream_id, + stream_user_data); + if (rv != 0) { + ngtcp2_objalloc_strm_release(&conn->strm_objalloc, strm); + return rv; + } + ngtcp2_strm_shutdown(strm, NGTCP2_STRM_FLAG_SHUT_RD); + + *pstream_id = conn->local.uni.next_stream_id; + conn->local.uni.next_stream_id += 4; + + return 0; +} + +ngtcp2_strm *ngtcp2_conn_find_stream(ngtcp2_conn *conn, int64_t stream_id) { + return ngtcp2_map_find(&conn->strms, (uint64_t)stream_id); +} + +ngtcp2_ssize ngtcp2_conn_write_stream_versioned( + ngtcp2_conn *conn, ngtcp2_path *path, int pkt_info_version, + ngtcp2_pkt_info *pi, uint8_t *dest, size_t destlen, ngtcp2_ssize *pdatalen, + uint32_t flags, int64_t stream_id, const uint8_t *data, size_t datalen, + ngtcp2_tstamp ts) { + ngtcp2_vec datav; + + datav.len = datalen; + datav.base = (uint8_t *)data; + + return ngtcp2_conn_writev_stream_versioned(conn, path, pkt_info_version, pi, + dest, destlen, pdatalen, flags, + stream_id, &datav, 1, ts); +} + +static ngtcp2_ssize conn_write_vmsg_wrapper(ngtcp2_conn *conn, + ngtcp2_path *path, + int pkt_info_version, + ngtcp2_pkt_info *pi, uint8_t *dest, + size_t destlen, ngtcp2_vmsg *vmsg, + ngtcp2_tstamp ts) { + ngtcp2_conn_stat *cstat = &conn->cstat; + ngtcp2_ssize nwrite; + + nwrite = ngtcp2_conn_write_vmsg(conn, path, pkt_info_version, pi, dest, + destlen, vmsg, ts); + if (nwrite < 0) { + return nwrite; + } + + if (cstat->bytes_in_flight >= cstat->cwnd) { + conn->rst.is_cwnd_limited = 1; + } else if (nwrite == 0 && conn_pacing_pkt_tx_allowed(conn, ts)) { + conn->rst.app_limited = conn->rst.delivered + cstat->bytes_in_flight; + + if (conn->rst.app_limited == 0) { + conn->rst.app_limited = cstat->max_tx_udp_payload_size; + } + } + + return nwrite; +} + +ngtcp2_ssize ngtcp2_conn_writev_stream_versioned( + ngtcp2_conn *conn, ngtcp2_path *path, int pkt_info_version, + ngtcp2_pkt_info *pi, uint8_t *dest, size_t destlen, ngtcp2_ssize *pdatalen, + uint32_t flags, int64_t stream_id, const ngtcp2_vec *datav, size_t datavcnt, + ngtcp2_tstamp ts) { + ngtcp2_vmsg vmsg, *pvmsg; + ngtcp2_strm *strm; + int64_t datalen; + + if (pdatalen) { + *pdatalen = -1; + } + + if (stream_id != -1) { + strm = ngtcp2_conn_find_stream(conn, stream_id); + if (strm == NULL) { + return NGTCP2_ERR_STREAM_NOT_FOUND; + } + + if (strm->flags & NGTCP2_STRM_FLAG_SHUT_WR) { + return NGTCP2_ERR_STREAM_SHUT_WR; + } + + datalen = ngtcp2_vec_len_varint(datav, datavcnt); + if (datalen == -1) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + if (datalen == 0 && !(flags & NGTCP2_WRITE_STREAM_FLAG_FIN) && + (strm->flags & NGTCP2_STRM_FLAG_ANY_SENT)) { + pvmsg = NULL; + } else { + if ((uint64_t)datalen > NGTCP2_MAX_VARINT - strm->tx.offset || + (uint64_t)datalen > NGTCP2_MAX_VARINT - conn->tx.offset) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + vmsg.type = NGTCP2_VMSG_TYPE_STREAM; + vmsg.stream.strm = strm; + vmsg.stream.flags = flags; + vmsg.stream.data = datav; + vmsg.stream.datacnt = datavcnt; + vmsg.stream.pdatalen = pdatalen; + + pvmsg = &vmsg; + } + } else { + pvmsg = NULL; + } + + return conn_write_vmsg_wrapper(conn, path, pkt_info_version, pi, dest, + destlen, pvmsg, ts); +} + +ngtcp2_ssize ngtcp2_conn_write_datagram_versioned( + ngtcp2_conn *conn, ngtcp2_path *path, int pkt_info_version, + ngtcp2_pkt_info *pi, uint8_t *dest, size_t destlen, int *paccepted, + uint32_t flags, uint64_t dgram_id, const uint8_t *data, size_t datalen, + ngtcp2_tstamp ts) { + ngtcp2_vec datav; + + datav.len = datalen; + datav.base = (uint8_t *)data; + + return ngtcp2_conn_writev_datagram_versioned(conn, path, pkt_info_version, pi, + dest, destlen, paccepted, flags, + dgram_id, &datav, 1, ts); +} + +ngtcp2_ssize ngtcp2_conn_writev_datagram_versioned( + ngtcp2_conn *conn, ngtcp2_path *path, int pkt_info_version, + ngtcp2_pkt_info *pi, uint8_t *dest, size_t destlen, int *paccepted, + uint32_t flags, uint64_t dgram_id, const ngtcp2_vec *datav, size_t datavcnt, + ngtcp2_tstamp ts) { + ngtcp2_vmsg vmsg; + int64_t datalen; + + if (paccepted) { + *paccepted = 0; + } + + if (conn->remote.transport_params == NULL || + conn->remote.transport_params->max_datagram_frame_size == 0) { + return NGTCP2_ERR_INVALID_STATE; + } + + datalen = ngtcp2_vec_len_varint(datav, datavcnt); + if (datalen == -1 +#if UINT64_MAX > SIZE_MAX + || (uint64_t)datalen > SIZE_MAX +#endif /* UINT64_MAX > SIZE_MAX */ + ) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + if (conn->remote.transport_params->max_datagram_frame_size < + ngtcp2_pkt_datagram_framelen((size_t)datalen)) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + vmsg.type = NGTCP2_VMSG_TYPE_DATAGRAM; + vmsg.datagram.dgram_id = dgram_id; + vmsg.datagram.flags = flags; + vmsg.datagram.data = datav; + vmsg.datagram.datacnt = datavcnt; + vmsg.datagram.paccepted = paccepted; + + return conn_write_vmsg_wrapper(conn, path, pkt_info_version, pi, dest, + destlen, &vmsg, ts); +} + +ngtcp2_ssize ngtcp2_conn_write_vmsg(ngtcp2_conn *conn, ngtcp2_path *path, + int pkt_info_version, ngtcp2_pkt_info *pi, + uint8_t *dest, size_t destlen, + ngtcp2_vmsg *vmsg, ngtcp2_tstamp ts) { + ngtcp2_ssize nwrite; + size_t origlen; + size_t origdestlen = destlen; + int rv; + uint8_t wflags = NGTCP2_WRITE_PKT_FLAG_NONE; + int ppe_pending = (conn->flags & NGTCP2_CONN_FLAG_PPE_PENDING) != 0; + ngtcp2_conn_stat *cstat = &conn->cstat; + ngtcp2_ssize res = 0; + uint64_t server_tx_left; + int64_t prev_in_pkt_num = -1; + ngtcp2_ksl_it it; + ngtcp2_rtb_entry *rtbent; + (void)pkt_info_version; + + conn_update_timestamp(conn, ts); + + if (path) { + ngtcp2_path_copy(path, &conn->dcid.current.ps.path); + } + + origlen = destlen = + conn_shape_udp_payload(conn, &conn->dcid.current, destlen); + + if (!ppe_pending && pi) { + pi->ecn = NGTCP2_ECN_NOT_ECT; + } + + switch (conn->state) { + case NGTCP2_CS_CLIENT_INITIAL: + case NGTCP2_CS_CLIENT_WAIT_HANDSHAKE: + if (!conn_pacing_pkt_tx_allowed(conn, ts)) { + assert(!ppe_pending); + + return conn_write_handshake_ack_pkts(conn, pi, dest, origlen, ts); + } + + nwrite = conn_client_write_handshake(conn, pi, dest, destlen, vmsg, ts); + /* We might be unable to write a packet because of depletion of + congestion window budget, perhaps due to packet loss that + shrinks the window drastically. */ + if (nwrite <= 0) { + return nwrite; + } + if (conn->state != NGTCP2_CS_POST_HANDSHAKE) { + return nwrite; + } + + assert(nwrite); + assert(dest[0] & NGTCP2_HEADER_FORM_BIT); + assert(conn->negotiated_version); + + if (nwrite < NGTCP2_MAX_UDP_PAYLOAD_SIZE && + ngtcp2_pkt_get_type_long(conn->negotiated_version, dest[0]) == + NGTCP2_PKT_INITIAL) { + wflags |= NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING; + } + + res = nwrite; + dest += nwrite; + destlen -= (size_t)nwrite; + /* Break here so that we can coalesces 1RTT packet. */ + break; + case NGTCP2_CS_SERVER_INITIAL: + case NGTCP2_CS_SERVER_WAIT_HANDSHAKE: + if (!conn_pacing_pkt_tx_allowed(conn, ts)) { + assert(!ppe_pending); + + if (!(conn->dcid.current.flags & NGTCP2_DCID_FLAG_PATH_VALIDATED)) { + server_tx_left = conn_server_tx_left(conn, &conn->dcid.current); + if (server_tx_left == 0) { + return 0; + } + + origlen = (size_t)ngtcp2_min_uint64((uint64_t)origlen, server_tx_left); + } + + return conn_write_handshake_ack_pkts(conn, pi, dest, origlen, ts); + } + + if (!ppe_pending) { + if (!(conn->dcid.current.flags & NGTCP2_DCID_FLAG_PATH_VALIDATED)) { + server_tx_left = conn_server_tx_left(conn, &conn->dcid.current); + if (server_tx_left == 0) { + if (cstat->loss_detection_timer != UINT64_MAX) { + ngtcp2_log_info( + &conn->log, NGTCP2_LOG_EVENT_LDC, + "loss detection timer canceled due to amplification limit"); + ngtcp2_conn_cancel_loss_detection_timer(conn); + } + + return 0; + } + + destlen = (size_t)ngtcp2_min_uint64((uint64_t)destlen, server_tx_left); + } + + if (conn->in_pktns) { + it = ngtcp2_rtb_head(&conn->in_pktns->rtb); + if (!ngtcp2_ksl_it_end(&it)) { + rtbent = ngtcp2_ksl_it_get(&it); + prev_in_pkt_num = rtbent->hd.pkt_num; + } + } + + nwrite = conn_write_handshake(conn, pi, dest, destlen, + /* write_datalen = */ 0, ts); + if (nwrite < 0) { + return nwrite; + } + + res = nwrite; + dest += nwrite; + destlen -= (size_t)nwrite; + + if (res < NGTCP2_MAX_UDP_PAYLOAD_SIZE && conn->in_pktns && nwrite > 0) { + it = ngtcp2_rtb_head(&conn->in_pktns->rtb); + if (!ngtcp2_ksl_it_end(&it)) { + rtbent = ngtcp2_ksl_it_get(&it); + if (rtbent->hd.pkt_num != prev_in_pkt_num && + (rtbent->flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING)) { + wflags |= NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING; + } + } + } + } + if (conn->pktns.crypto.tx.ckm == NULL) { + return res; + } + break; + case NGTCP2_CS_POST_HANDSHAKE: + if (!conn_pacing_pkt_tx_allowed(conn, ts)) { + assert(!ppe_pending); + + if (conn->server && + !(conn->dcid.current.flags & NGTCP2_DCID_FLAG_PATH_VALIDATED)) { + server_tx_left = conn_server_tx_left(conn, &conn->dcid.current); + if (server_tx_left == 0) { + return 0; + } + + origlen = (size_t)ngtcp2_min_uint64((uint64_t)origlen, server_tx_left); + } + + return conn_write_ack_pkt(conn, pi, dest, origlen, NGTCP2_PKT_1RTT, ts); + } + + break; + case NGTCP2_CS_CLOSING: + return NGTCP2_ERR_CLOSING; + case NGTCP2_CS_DRAINING: + return NGTCP2_ERR_DRAINING; + default: + return 0; + } + + assert(conn->pktns.crypto.tx.ckm); + + if (conn_check_pkt_num_exhausted(conn)) { + return NGTCP2_ERR_PKT_NUM_EXHAUSTED; + } + + if (vmsg) { + switch (vmsg->type) { + case NGTCP2_VMSG_TYPE_STREAM: + if (vmsg->stream.flags & NGTCP2_WRITE_STREAM_FLAG_MORE) { + wflags |= NGTCP2_WRITE_PKT_FLAG_MORE; + } + break; + case NGTCP2_VMSG_TYPE_DATAGRAM: + if (vmsg->datagram.flags & NGTCP2_WRITE_DATAGRAM_FLAG_MORE) { + wflags |= NGTCP2_WRITE_PKT_FLAG_MORE; + } + break; + default: + break; + } + } + + if (ppe_pending) { + res = conn->pkt.hs_spktlen; + if (conn->pkt.require_padding) { + wflags |= NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING; + } + /* dest and destlen have already been adjusted in ppe in the first + run. They are adjusted for probe packet later. */ + nwrite = conn_write_pkt(conn, pi, dest, destlen, (size_t)res, vmsg, + NGTCP2_PKT_1RTT, wflags, ts); + goto fin; + } else { + conn->pkt.require_padding = + (wflags & NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING); + + if (conn->state == NGTCP2_CS_POST_HANDSHAKE) { + rv = conn_prepare_key_update(conn, ts); + if (rv != 0) { + return rv; + } + } + + if (!conn->pktns.rtb.probe_pkt_left && conn_cwnd_is_zero(conn)) { + destlen = 0; + } else { + if (res == 0) { + nwrite = + conn_write_path_response(conn, path, pi, dest, origdestlen, ts); + if (nwrite) { + goto fin; + } + + if (conn->pv) { + nwrite = + conn_write_path_challenge(conn, path, pi, dest, origdestlen, ts); + if (nwrite) { + goto fin; + } + } + + if (conn->pmtud && + (conn->dcid.current.flags & NGTCP2_DCID_FLAG_PATH_VALIDATED) && + (!conn->hs_pktns || + ngtcp2_strm_streamfrq_empty(&conn->hs_pktns->crypto.strm))) { + nwrite = conn_write_pmtud_probe(conn, pi, dest, origdestlen, ts); + if (nwrite) { + goto fin; + } + } + } + } + + if (conn->server && + !(conn->dcid.current.flags & NGTCP2_DCID_FLAG_PATH_VALIDATED)) { + server_tx_left = conn_server_tx_left(conn, &conn->dcid.current); + origlen = (size_t)ngtcp2_min_uint64((uint64_t)origlen, server_tx_left); + destlen = (size_t)ngtcp2_min_uint64((uint64_t)destlen, server_tx_left); + + if (server_tx_left == 0 && + conn->cstat.loss_detection_timer != UINT64_MAX) { + ngtcp2_log_info( + &conn->log, NGTCP2_LOG_EVENT_LDC, + "loss detection timer canceled due to amplification limit"); + ngtcp2_conn_cancel_loss_detection_timer(conn); + } + } + } + + if (res == 0) { + if (conn_handshake_remnants_left(conn)) { + if (conn_handshake_probe_left(conn) || + /* Allow exceeding CWND if an Handshake packet needs to be + sent in order to avoid dead lock. In some situation, + typically for client, 1 RTT packets may occupy in-flight + bytes (e.g., some large requests and PMTUD), and + Handshake packet loss shrinks CWND, and we may get in the + situation that we are unable to send Handshake packet. */ + (conn->hs_pktns->rtb.num_pto_eliciting == 0 && + !ngtcp2_strm_streamfrq_empty(&conn->hs_pktns->crypto.strm))) { + destlen = origlen; + } + nwrite = conn_write_handshake_pkts(conn, pi, dest, destlen, + /* write_datalen = */ 0, ts); + if (nwrite < 0) { + return nwrite; + } + if (nwrite > 0) { + res = nwrite; + dest += nwrite; + destlen -= (size_t)nwrite; + } else if (destlen == 0) { + res = conn_write_handshake_ack_pkts(conn, pi, dest, origlen, ts); + if (res) { + return res; + } + } + } + } + + if (conn->pktns.rtb.probe_pkt_left) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "transmit probe pkt left=%zu", + conn->pktns.rtb.probe_pkt_left); + + nwrite = conn_write_pkt(conn, pi, dest, destlen, (size_t)res, vmsg, + NGTCP2_PKT_1RTT, wflags, ts); + + goto fin; + } + + nwrite = conn_write_pkt(conn, pi, dest, destlen, (size_t)res, vmsg, + NGTCP2_PKT_1RTT, wflags, ts); + if (nwrite) { + assert(nwrite != NGTCP2_ERR_NOBUF); + goto fin; + } + + if (res == 0) { + nwrite = conn_write_ack_pkt(conn, pi, dest, origlen, NGTCP2_PKT_1RTT, ts); + } + +fin: + if (nwrite >= 0) { + res += nwrite; + return res; + } + + switch (nwrite) { + case NGTCP2_ERR_STREAM_DATA_BLOCKED: + if (!(wflags & NGTCP2_WRITE_PKT_FLAG_MORE)) { + if (res) { + return res; + } + + break; + } + /* fall through */ + case NGTCP2_ERR_WRITE_MORE: + conn->pkt.hs_spktlen = res; + break; + } + + return nwrite; +} + +static ngtcp2_ssize +conn_write_connection_close(ngtcp2_conn *conn, ngtcp2_pkt_info *pi, + uint8_t *dest, size_t destlen, uint8_t pkt_type, + uint64_t error_code, const uint8_t *reason, + size_t reasonlen, ngtcp2_tstamp ts) { + ngtcp2_pktns *in_pktns = conn->in_pktns; + ngtcp2_pktns *hs_pktns = conn->hs_pktns; + ngtcp2_ssize res = 0, nwrite; + ngtcp2_frame fr; + uint8_t flags = NGTCP2_WRITE_PKT_FLAG_NONE; + + fr.type = NGTCP2_FRAME_CONNECTION_CLOSE; + fr.connection_close.error_code = error_code; + fr.connection_close.frame_type = 0; + fr.connection_close.reasonlen = reasonlen; + fr.connection_close.reason = (uint8_t *)reason; + + if (!(conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED) && + pkt_type != NGTCP2_PKT_INITIAL) { + if (in_pktns && conn->server) { + nwrite = ngtcp2_conn_write_single_frame_pkt( + conn, pi, dest, destlen, NGTCP2_PKT_INITIAL, NGTCP2_WRITE_PKT_FLAG_NONE, + &conn->dcid.current.cid, &fr, NGTCP2_RTB_ENTRY_FLAG_NONE, NULL, ts); + if (nwrite < 0) { + return nwrite; + } + + dest += nwrite; + destlen -= (size_t)nwrite; + res += nwrite; + } + + if (pkt_type != NGTCP2_PKT_HANDSHAKE && hs_pktns && + hs_pktns->crypto.tx.ckm) { + nwrite = ngtcp2_conn_write_single_frame_pkt( + conn, pi, dest, destlen, NGTCP2_PKT_HANDSHAKE, + NGTCP2_WRITE_PKT_FLAG_NONE, &conn->dcid.current.cid, &fr, + NGTCP2_RTB_ENTRY_FLAG_NONE, NULL, ts); + if (nwrite < 0) { + return nwrite; + } + + dest += nwrite; + destlen -= (size_t)nwrite; + res += nwrite; + } + } + + if (!conn->server && pkt_type == NGTCP2_PKT_INITIAL) { + flags = NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING; + } + + nwrite = ngtcp2_conn_write_single_frame_pkt( + conn, pi, dest, destlen, pkt_type, flags, &conn->dcid.current.cid, &fr, + NGTCP2_RTB_ENTRY_FLAG_NONE, NULL, ts); + + if (nwrite < 0) { + return nwrite; + } + + res += nwrite; + + if (res == 0) { + return NGTCP2_ERR_NOBUF; + } + + return res; +} + +ngtcp2_ssize ngtcp2_conn_write_connection_close_pkt( + ngtcp2_conn *conn, ngtcp2_path *path, ngtcp2_pkt_info *pi, uint8_t *dest, + size_t destlen, uint64_t error_code, const uint8_t *reason, size_t reasonlen, + ngtcp2_tstamp ts) { + ngtcp2_pktns *in_pktns = conn->in_pktns; + ngtcp2_pktns *hs_pktns = conn->hs_pktns; + uint8_t pkt_type; + ngtcp2_ssize nwrite; + uint64_t server_tx_left; + + if (conn_check_pkt_num_exhausted(conn)) { + return NGTCP2_ERR_PKT_NUM_EXHAUSTED; + } + + switch (conn->state) { + case NGTCP2_CS_CLIENT_INITIAL: + return NGTCP2_ERR_INVALID_STATE; + case NGTCP2_CS_CLOSING: + case NGTCP2_CS_DRAINING: + return 0; + default: + break; + } + + if (path) { + ngtcp2_path_copy(path, &conn->dcid.current.ps.path); + } + + destlen = conn_shape_udp_payload(conn, &conn->dcid.current, destlen); + + if (pi) { + pi->ecn = NGTCP2_ECN_NOT_ECT; + } + + if (conn->server) { + server_tx_left = conn_server_tx_left(conn, &conn->dcid.current); + destlen = (size_t)ngtcp2_min_uint64((uint64_t)destlen, server_tx_left); + } + + if (conn->state == NGTCP2_CS_POST_HANDSHAKE || + (conn->server && conn->pktns.crypto.tx.ckm)) { + pkt_type = NGTCP2_PKT_1RTT; + } else if (hs_pktns && hs_pktns->crypto.tx.ckm) { + pkt_type = NGTCP2_PKT_HANDSHAKE; + } else if (in_pktns && in_pktns->crypto.tx.ckm) { + pkt_type = NGTCP2_PKT_INITIAL; + } else { + /* This branch is taken if server has not read any Initial packet + from client. */ + return NGTCP2_ERR_INVALID_STATE; + } + + nwrite = conn_write_connection_close(conn, pi, dest, destlen, pkt_type, + error_code, reason, reasonlen, ts); + if (nwrite < 0) { + return nwrite; + } + + conn->state = NGTCP2_CS_CLOSING; + + return nwrite; +} + +ngtcp2_ssize ngtcp2_conn_write_application_close_pkt( + ngtcp2_conn *conn, ngtcp2_path *path, ngtcp2_pkt_info *pi, uint8_t *dest, + size_t destlen, uint64_t app_error_code, const uint8_t *reason, + size_t reasonlen, ngtcp2_tstamp ts) { + ngtcp2_ssize nwrite; + ngtcp2_ssize res = 0; + ngtcp2_frame fr; + uint64_t server_tx_left; + + if (conn_check_pkt_num_exhausted(conn)) { + return NGTCP2_ERR_PKT_NUM_EXHAUSTED; + } + + switch (conn->state) { + case NGTCP2_CS_CLIENT_INITIAL: + return NGTCP2_ERR_INVALID_STATE; + case NGTCP2_CS_CLOSING: + case NGTCP2_CS_DRAINING: + return 0; + default: + break; + } + + if (path) { + ngtcp2_path_copy(path, &conn->dcid.current.ps.path); + } + + destlen = conn_shape_udp_payload(conn, &conn->dcid.current, destlen); + + if (pi) { + pi->ecn = NGTCP2_ECN_NOT_ECT; + } + + if (conn->server) { + server_tx_left = conn_server_tx_left(conn, &conn->dcid.current); + destlen = (size_t)ngtcp2_min_uint64((uint64_t)destlen, server_tx_left); + } + + if (!(conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED)) { + nwrite = conn_write_connection_close( + conn, pi, dest, destlen, + conn->hs_pktns->crypto.tx.ckm ? NGTCP2_PKT_HANDSHAKE : NGTCP2_PKT_INITIAL, + NGTCP2_APPLICATION_ERROR, NULL, 0, ts); + if (nwrite < 0) { + return nwrite; + } + res = nwrite; + dest += nwrite; + destlen -= (size_t)nwrite; + } + + if (conn->state != NGTCP2_CS_POST_HANDSHAKE && + (!conn->server || !conn->pktns.crypto.tx.ckm)) { + return res; + } + + assert(conn->pktns.crypto.tx.ckm); + + fr.type = NGTCP2_FRAME_CONNECTION_CLOSE_APP; + fr.connection_close.error_code = app_error_code; + fr.connection_close.frame_type = 0; + fr.connection_close.reasonlen = reasonlen; + fr.connection_close.reason = (uint8_t *)reason; + + nwrite = ngtcp2_conn_write_single_frame_pkt( + conn, pi, dest, destlen, NGTCP2_PKT_1RTT, NGTCP2_WRITE_PKT_FLAG_NONE, + &conn->dcid.current.cid, &fr, NGTCP2_RTB_ENTRY_FLAG_NONE, NULL, ts); + + if (nwrite < 0) { + return nwrite; + } + + res += nwrite; + + if (res == 0) { + return NGTCP2_ERR_NOBUF; + } + + conn->state = NGTCP2_CS_CLOSING; + + return res; +} + +static void ccerr_init(ngtcp2_ccerr *ccerr, ngtcp2_ccerr_type type, + uint64_t error_code, const uint8_t *reason, + size_t reasonlen) { + ccerr->type = type; + ccerr->error_code = error_code; + ccerr->frame_type = 0; + ccerr->reason = (uint8_t *)reason; + ccerr->reasonlen = reasonlen; +} + +void ngtcp2_ccerr_default(ngtcp2_ccerr *ccerr) { + ccerr_init(ccerr, NGTCP2_CCERR_TYPE_TRANSPORT, NGTCP2_NO_ERROR, NULL, 0); +} + +void ngtcp2_ccerr_set_transport_error(ngtcp2_ccerr *ccerr, uint64_t error_code, + const uint8_t *reason, size_t reasonlen) { + ccerr_init(ccerr, NGTCP2_CCERR_TYPE_TRANSPORT, error_code, reason, reasonlen); +} + +void ngtcp2_ccerr_set_liberr(ngtcp2_ccerr *ccerr, int liberr, + const uint8_t *reason, size_t reasonlen) { + switch (liberr) { + case NGTCP2_ERR_RECV_VERSION_NEGOTIATION: + ccerr_init(ccerr, NGTCP2_CCERR_TYPE_VERSION_NEGOTIATION, NGTCP2_NO_ERROR, + reason, reasonlen); + + return; + case NGTCP2_ERR_IDLE_CLOSE: + ccerr_init(ccerr, NGTCP2_CCERR_TYPE_IDLE_CLOSE, NGTCP2_NO_ERROR, reason, + reasonlen); + + return; + case NGTCP2_ERR_DROP_CONN: + ccerr_init(ccerr, NGTCP2_CCERR_TYPE_DROP_CONN, NGTCP2_NO_ERROR, reason, + reasonlen); + + return; + case NGTCP2_ERR_RETRY: + ccerr_init(ccerr, NGTCP2_CCERR_TYPE_RETRY, NGTCP2_NO_ERROR, reason, + reasonlen); + + return; + }; + + ngtcp2_ccerr_set_transport_error( + ccerr, ngtcp2_err_infer_quic_transport_error_code(liberr), reason, + reasonlen); +} + +void ngtcp2_ccerr_set_tls_alert(ngtcp2_ccerr *ccerr, uint8_t tls_alert, + const uint8_t *reason, size_t reasonlen) { + ngtcp2_ccerr_set_transport_error(ccerr, NGTCP2_CRYPTO_ERROR | tls_alert, + reason, reasonlen); +} + +void ngtcp2_ccerr_set_application_error(ngtcp2_ccerr *ccerr, + uint64_t error_code, + const uint8_t *reason, + size_t reasonlen) { + ccerr_init(ccerr, NGTCP2_CCERR_TYPE_APPLICATION, error_code, reason, + reasonlen); +} + +ngtcp2_ssize ngtcp2_conn_write_connection_close_versioned( + ngtcp2_conn *conn, ngtcp2_path *path, int pkt_info_version, + ngtcp2_pkt_info *pi, uint8_t *dest, size_t destlen, const ngtcp2_ccerr *ccerr, + ngtcp2_tstamp ts) { + (void)pkt_info_version; + + conn_update_timestamp(conn, ts); + + switch (ccerr->type) { + case NGTCP2_CCERR_TYPE_TRANSPORT: + return ngtcp2_conn_write_connection_close_pkt( + conn, path, pi, dest, destlen, ccerr->error_code, ccerr->reason, + ccerr->reasonlen, ts); + case NGTCP2_CCERR_TYPE_APPLICATION: + return ngtcp2_conn_write_application_close_pkt( + conn, path, pi, dest, destlen, ccerr->error_code, ccerr->reason, + ccerr->reasonlen, ts); + default: + return 0; + } +} + +int ngtcp2_conn_in_closing_period(ngtcp2_conn *conn) { + return conn->state == NGTCP2_CS_CLOSING; +} + +int ngtcp2_conn_in_draining_period(ngtcp2_conn *conn) { + return conn->state == NGTCP2_CS_DRAINING; +} + +int ngtcp2_conn_close_stream(ngtcp2_conn *conn, ngtcp2_strm *strm) { + int rv; + + rv = conn_call_stream_close(conn, strm); + if (rv != 0) { + return rv; + } + + rv = ngtcp2_map_remove(&conn->strms, (ngtcp2_map_key_type)strm->stream_id); + if (rv != 0) { + assert(rv != NGTCP2_ERR_INVALID_ARGUMENT); + return rv; + } + + if (ngtcp2_strm_is_tx_queued(strm)) { + ngtcp2_pq_remove(&conn->tx.strmq, &strm->pe); + } + + ngtcp2_strm_free(strm); + ngtcp2_objalloc_strm_release(&conn->strm_objalloc, strm); + + return 0; +} + +int ngtcp2_conn_close_stream_if_shut_rdwr(ngtcp2_conn *conn, + ngtcp2_strm *strm) { + if ((strm->flags & NGTCP2_STRM_FLAG_SHUT_RDWR) == + NGTCP2_STRM_FLAG_SHUT_RDWR && + ((strm->flags & NGTCP2_STRM_FLAG_RESET_STREAM_RECVED) || + ngtcp2_strm_rx_offset(strm) == strm->rx.last_offset) && + (((strm->flags & NGTCP2_STRM_FLAG_RESET_STREAM) && + (strm->flags & NGTCP2_STRM_FLAG_RESET_STREAM_ACKED)) || + ngtcp2_strm_is_all_tx_data_fin_acked(strm))) { + return ngtcp2_conn_close_stream(conn, strm); + } + return 0; +} + +/* + * conn_shutdown_stream_write closes send stream with error code + * |app_error_code|. RESET_STREAM frame is scheduled. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int conn_shutdown_stream_write(ngtcp2_conn *conn, ngtcp2_strm *strm, + uint64_t app_error_code) { + ngtcp2_strm_set_app_error_code(strm, app_error_code); + + if ((strm->flags & NGTCP2_STRM_FLAG_RESET_STREAM) || + ngtcp2_strm_is_all_tx_data_fin_acked(strm)) { + return 0; + } + + /* Set this flag so that we don't accidentally send DATA to this + stream. */ + strm->flags |= NGTCP2_STRM_FLAG_SHUT_WR | NGTCP2_STRM_FLAG_RESET_STREAM; + + ngtcp2_strm_streamfrq_clear(strm); + + return conn_reset_stream(conn, strm, app_error_code); +} + +/* + * conn_shutdown_stream_read closes read stream with error code + * |app_error_code|. STOP_SENDING frame is scheduled. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int conn_shutdown_stream_read(ngtcp2_conn *conn, ngtcp2_strm *strm, + uint64_t app_error_code) { + ngtcp2_strm_set_app_error_code(strm, app_error_code); + + if (strm->flags & + (NGTCP2_STRM_FLAG_STOP_SENDING | NGTCP2_STRM_FLAG_RESET_STREAM_RECVED)) { + return 0; + } + if ((strm->flags & NGTCP2_STRM_FLAG_SHUT_RD) && + ngtcp2_strm_rx_offset(strm) == strm->rx.last_offset) { + return 0; + } + + /* Extend connection flow control window for the amount of data + which are not passed to application. */ + if (!(strm->flags & NGTCP2_STRM_FLAG_RESET_STREAM_RECVED)) { + ngtcp2_conn_extend_max_offset(conn, strm->rx.last_offset - + ngtcp2_strm_rx_offset(strm)); + } + + strm->flags |= NGTCP2_STRM_FLAG_STOP_SENDING; + + ngtcp2_strm_discard_reordered_data(strm); + + return conn_stop_sending(conn, strm, app_error_code); +} + +int ngtcp2_conn_shutdown_stream(ngtcp2_conn *conn, uint32_t flags, + int64_t stream_id, uint64_t app_error_code) { + int rv; + ngtcp2_strm *strm; + (void)flags; + + strm = ngtcp2_conn_find_stream(conn, stream_id); + if (strm == NULL) { + return 0; + } + + if (bidi_stream(stream_id) || !conn_local_stream(conn, stream_id)) { + rv = conn_shutdown_stream_read(conn, strm, app_error_code); + if (rv != 0) { + return rv; + } + } + + if (bidi_stream(stream_id) || conn_local_stream(conn, stream_id)) { + rv = conn_shutdown_stream_write(conn, strm, app_error_code); + if (rv != 0) { + return rv; + } + } + + return 0; +} + +int ngtcp2_conn_shutdown_stream_write(ngtcp2_conn *conn, uint32_t flags, + int64_t stream_id, + uint64_t app_error_code) { + ngtcp2_strm *strm; + (void)flags; + + if (!bidi_stream(stream_id) && !conn_local_stream(conn, stream_id)) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + strm = ngtcp2_conn_find_stream(conn, stream_id); + if (strm == NULL) { + return 0; + } + + return conn_shutdown_stream_write(conn, strm, app_error_code); +} + +int ngtcp2_conn_shutdown_stream_read(ngtcp2_conn *conn, uint32_t flags, + int64_t stream_id, + uint64_t app_error_code) { + ngtcp2_strm *strm; + (void)flags; + + if (!bidi_stream(stream_id) && conn_local_stream(conn, stream_id)) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + strm = ngtcp2_conn_find_stream(conn, stream_id); + if (strm == NULL) { + return 0; + } + + return conn_shutdown_stream_read(conn, strm, app_error_code); +} + +/* + * conn_extend_max_stream_offset extends stream level flow control + * window by |datalen| of the stream denoted by |strm|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int conn_extend_max_stream_offset(ngtcp2_conn *conn, ngtcp2_strm *strm, + uint64_t datalen) { + ngtcp2_strm *top; + + if (datalen > NGTCP2_MAX_VARINT || + strm->rx.unsent_max_offset > NGTCP2_MAX_VARINT - datalen) { + strm->rx.unsent_max_offset = NGTCP2_MAX_VARINT; + } else { + strm->rx.unsent_max_offset += datalen; + } + + if (!(strm->flags & + (NGTCP2_STRM_FLAG_SHUT_RD | NGTCP2_STRM_FLAG_STOP_SENDING)) && + !ngtcp2_strm_is_tx_queued(strm) && + conn_should_send_max_stream_data(conn, strm)) { + if (!ngtcp2_pq_empty(&conn->tx.strmq)) { + top = ngtcp2_conn_tx_strmq_top(conn); + strm->cycle = top->cycle; + } + strm->cycle = conn_tx_strmq_first_cycle(conn); + return ngtcp2_conn_tx_strmq_push(conn, strm); + } + + return 0; +} + +int ngtcp2_conn_extend_max_stream_offset(ngtcp2_conn *conn, int64_t stream_id, + uint64_t datalen) { + ngtcp2_strm *strm; + + if (!bidi_stream(stream_id) && conn_local_stream(conn, stream_id)) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + strm = ngtcp2_conn_find_stream(conn, stream_id); + if (strm == NULL) { + return 0; + } + + return conn_extend_max_stream_offset(conn, strm, datalen); +} + +void ngtcp2_conn_extend_max_offset(ngtcp2_conn *conn, uint64_t datalen) { + if (NGTCP2_MAX_VARINT < datalen || + conn->rx.unsent_max_offset > NGTCP2_MAX_VARINT - datalen) { + conn->rx.unsent_max_offset = NGTCP2_MAX_VARINT; + return; + } + + conn->rx.unsent_max_offset += datalen; +} + +void ngtcp2_conn_extend_max_streams_bidi(ngtcp2_conn *conn, size_t n) { + handle_max_remote_streams_extension(&conn->remote.bidi.unsent_max_streams, n); +} + +void ngtcp2_conn_extend_max_streams_uni(ngtcp2_conn *conn, size_t n) { + handle_max_remote_streams_extension(&conn->remote.uni.unsent_max_streams, n); +} + +const ngtcp2_cid *ngtcp2_conn_get_dcid(ngtcp2_conn *conn) { + return &conn->dcid.current.cid; +} + +const ngtcp2_cid *ngtcp2_conn_get_client_initial_dcid(ngtcp2_conn *conn) { + return &conn->rcid; +} + +uint32_t ngtcp2_conn_get_client_chosen_version(ngtcp2_conn *conn) { + return conn->client_chosen_version; +} + +uint32_t ngtcp2_conn_get_negotiated_version(ngtcp2_conn *conn) { + return conn->negotiated_version; +} + +static int delete_strms_pq_each(void *data, void *ptr) { + ngtcp2_conn *conn = ptr; + ngtcp2_strm *s = data; + + if (ngtcp2_strm_is_tx_queued(s)) { + ngtcp2_pq_remove(&conn->tx.strmq, &s->pe); + } + + ngtcp2_strm_free(s); + ngtcp2_objalloc_strm_release(&conn->strm_objalloc, s); + + return 0; +} + +/* + * conn_discard_early_data_state discards any connection states which + * are altered by any operations during early data transfer. + */ +static void conn_discard_early_data_state(ngtcp2_conn *conn) { + ngtcp2_frame_chain **pfrc, *frc; + + ngtcp2_rtb_remove_early_data(&conn->pktns.rtb, &conn->cstat); + + ngtcp2_map_each(&conn->strms, delete_strms_pq_each, conn); + ngtcp2_map_clear(&conn->strms); + + conn->tx.offset = 0; + conn->tx.last_blocked_offset = UINT64_MAX; + + conn->rx.unsent_max_offset = conn->rx.max_offset = + conn->local.transport_params.initial_max_data; + + conn->remote.bidi.unsent_max_streams = conn->remote.bidi.max_streams = + conn->local.transport_params.initial_max_streams_bidi; + + conn->remote.uni.unsent_max_streams = conn->remote.uni.max_streams = + conn->local.transport_params.initial_max_streams_uni; + + if (conn->server) { + conn->local.bidi.next_stream_id = 1; + conn->local.uni.next_stream_id = 3; + } else { + conn->local.bidi.next_stream_id = 0; + conn->local.uni.next_stream_id = 2; + } + + for (pfrc = &conn->pktns.tx.frq; *pfrc;) { + frc = *pfrc; + *pfrc = (*pfrc)->next; + ngtcp2_frame_chain_objalloc_del(frc, &conn->frc_objalloc, conn->mem); + } +} + +int ngtcp2_conn_tls_early_data_rejected(ngtcp2_conn *conn) { + if (conn->flags & NGTCP2_CONN_FLAG_EARLY_DATA_REJECTED) { + return 0; + } + + conn->flags |= NGTCP2_CONN_FLAG_EARLY_DATA_REJECTED; + + conn_discard_early_data_state(conn); + + if (conn->callbacks.tls_early_data_rejected) { + return conn->callbacks.tls_early_data_rejected(conn, conn->user_data); + } + + if (conn->early.ckm) { + conn_discard_early_key(conn); + } + + return 0; +} + +int ngtcp2_conn_get_tls_early_data_rejected(ngtcp2_conn *conn) { + return (conn->flags & NGTCP2_CONN_FLAG_EARLY_DATA_REJECTED) != 0; +} + +int ngtcp2_conn_update_rtt(ngtcp2_conn *conn, ngtcp2_duration rtt, + ngtcp2_duration ack_delay, ngtcp2_tstamp ts) { + ngtcp2_conn_stat *cstat = &conn->cstat; + + if (cstat->min_rtt == UINT64_MAX) { + cstat->latest_rtt = rtt; + cstat->min_rtt = rtt; + cstat->smoothed_rtt = rtt; + cstat->rttvar = rtt / 2; + cstat->first_rtt_sample_ts = ts; + } else { + if (conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED) { + assert(conn->remote.transport_params); + + ack_delay = ngtcp2_min_uint64( + ack_delay, conn->remote.transport_params->max_ack_delay); + } else if (ack_delay > 0 && rtt >= cstat->min_rtt && + rtt < cstat->min_rtt + ack_delay) { + /* Ignore RTT sample if adjusting ack_delay causes the sample + less than min_rtt before handshake confirmation. */ + ngtcp2_log_info( + &conn->log, NGTCP2_LOG_EVENT_LDC, + "ignore rtt sample because ack_delay is too large latest_rtt=%" PRIu64 + " min_rtt=%" PRIu64 " ack_delay=%" PRIu64, + rtt / NGTCP2_MILLISECONDS, cstat->min_rtt / NGTCP2_MILLISECONDS, + ack_delay / NGTCP2_MILLISECONDS); + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + cstat->latest_rtt = rtt; + cstat->min_rtt = ngtcp2_min_uint64(cstat->min_rtt, rtt); + + if (rtt >= cstat->min_rtt + ack_delay) { + rtt -= ack_delay; + } + + cstat->rttvar = (cstat->rttvar * 3 + (cstat->smoothed_rtt < rtt + ? rtt - cstat->smoothed_rtt + : cstat->smoothed_rtt - rtt)) / + 4; + cstat->smoothed_rtt = (cstat->smoothed_rtt * 7 + rtt) / 8; + } + + ngtcp2_log_info( + &conn->log, NGTCP2_LOG_EVENT_LDC, + "latest_rtt=%" PRIu64 " min_rtt=%" PRIu64 " smoothed_rtt=%" PRIu64 + " rttvar=%" PRIu64 " ack_delay=%" PRIu64, + cstat->latest_rtt / NGTCP2_MILLISECONDS, + cstat->min_rtt / NGTCP2_MILLISECONDS, + cstat->smoothed_rtt / NGTCP2_MILLISECONDS, + cstat->rttvar / NGTCP2_MILLISECONDS, ack_delay / NGTCP2_MILLISECONDS); + + return 0; +} + +void ngtcp2_conn_get_conn_info_versioned(ngtcp2_conn *conn, + int conn_info_version, + ngtcp2_conn_info *cinfo) { + const ngtcp2_conn_stat *cstat = &conn->cstat; + (void)conn_info_version; + + cinfo->latest_rtt = cstat->latest_rtt; + cinfo->min_rtt = cstat->min_rtt; + cinfo->smoothed_rtt = cstat->smoothed_rtt; + cinfo->rttvar = cstat->rttvar; + cinfo->cwnd = cstat->cwnd; + cinfo->ssthresh = cstat->ssthresh; + cinfo->bytes_in_flight = cstat->bytes_in_flight; +} + +static void conn_get_loss_time_and_pktns(ngtcp2_conn *conn, + ngtcp2_tstamp *ploss_time, + ngtcp2_pktns **ppktns) { + ngtcp2_pktns *const ns[] = {conn->hs_pktns, &conn->pktns}; + ngtcp2_conn_stat *cstat = &conn->cstat; + ngtcp2_duration *loss_time = cstat->loss_time + 1; + ngtcp2_tstamp earliest_loss_time = cstat->loss_time[NGTCP2_PKTNS_ID_INITIAL]; + ngtcp2_pktns *pktns = conn->in_pktns; + size_t i; + + for (i = 0; i < ngtcp2_arraylen(ns); ++i) { + if (ns[i] == NULL || loss_time[i] >= earliest_loss_time) { + continue; + } + + earliest_loss_time = loss_time[i]; + pktns = ns[i]; + } + + if (ploss_time) { + *ploss_time = earliest_loss_time; + } + if (ppktns) { + *ppktns = pktns; + } +} + +static ngtcp2_tstamp conn_get_earliest_pto_expiry(ngtcp2_conn *conn, + ngtcp2_tstamp ts) { + ngtcp2_pktns *ns[] = {conn->in_pktns, conn->hs_pktns, &conn->pktns}; + size_t i; + ngtcp2_tstamp earliest_ts = UINT64_MAX, t; + ngtcp2_conn_stat *cstat = &conn->cstat; + ngtcp2_tstamp *times = cstat->last_tx_pkt_ts; + ngtcp2_duration duration = + compute_pto(cstat->smoothed_rtt, cstat->rttvar, /* max_ack_delay = */ 0) * + (1ULL << cstat->pto_count); + + for (i = NGTCP2_PKTNS_ID_INITIAL; i < NGTCP2_PKTNS_ID_MAX; ++i) { + if (ns[i] == NULL || ns[i]->rtb.num_pto_eliciting == 0 || + (times[i] == UINT64_MAX || + (i == NGTCP2_PKTNS_ID_APPLICATION && + !(conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED)))) { + continue; + } + + t = times[i] + duration; + + if (i == NGTCP2_PKTNS_ID_APPLICATION) { + assert(conn->remote.transport_params); + t += conn->remote.transport_params->max_ack_delay * + (1ULL << cstat->pto_count); + } + + if (t < earliest_ts) { + earliest_ts = t; + } + } + + if (earliest_ts == UINT64_MAX) { + return ts + duration; + } + + return earliest_ts; +} + +void ngtcp2_conn_set_loss_detection_timer(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + ngtcp2_conn_stat *cstat = &conn->cstat; + ngtcp2_duration timeout; + ngtcp2_pktns *in_pktns = conn->in_pktns; + ngtcp2_pktns *hs_pktns = conn->hs_pktns; + ngtcp2_pktns *pktns = &conn->pktns; + ngtcp2_tstamp earliest_loss_time; + + conn_get_loss_time_and_pktns(conn, &earliest_loss_time, NULL); + + if (earliest_loss_time != UINT64_MAX) { + cstat->loss_detection_timer = earliest_loss_time; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_LDC, + "loss_detection_timer=%" PRIu64 " nonzero crypto loss time", + cstat->loss_detection_timer); + return; + } + + if ((!in_pktns || in_pktns->rtb.num_pto_eliciting == 0) && + (!hs_pktns || hs_pktns->rtb.num_pto_eliciting == 0) && + (pktns->rtb.num_pto_eliciting == 0 || + !(conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED)) && + (conn->server || + (conn->flags & (NGTCP2_CONN_FLAG_SERVER_ADDR_VERIFIED | + NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED)))) { + if (cstat->loss_detection_timer != UINT64_MAX) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_LDC, + "loss detection timer canceled"); + ngtcp2_conn_cancel_loss_detection_timer(conn); + } + return; + } + + cstat->loss_detection_timer = conn_get_earliest_pto_expiry(conn, ts); + + timeout = + cstat->loss_detection_timer > ts ? cstat->loss_detection_timer - ts : 0; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_LDC, + "loss_detection_timer=%" PRIu64 " timeout=%" PRIu64, + cstat->loss_detection_timer, timeout / NGTCP2_MILLISECONDS); +} + +void ngtcp2_conn_cancel_loss_detection_timer(ngtcp2_conn *conn) { + ngtcp2_conn_stat *cstat = &conn->cstat; + + cstat->loss_detection_timer = UINT64_MAX; + cstat->pto_count = 0; +} + +int ngtcp2_conn_on_loss_detection_timer(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + ngtcp2_conn_stat *cstat = &conn->cstat; + int rv; + ngtcp2_pktns *in_pktns = conn->in_pktns; + ngtcp2_pktns *hs_pktns = conn->hs_pktns; + ngtcp2_tstamp earliest_loss_time; + ngtcp2_pktns *loss_pktns = NULL; + + switch (conn->state) { + case NGTCP2_CS_CLOSING: + case NGTCP2_CS_DRAINING: + ngtcp2_conn_cancel_loss_detection_timer(conn); + return 0; + default: + break; + } + + if (cstat->loss_detection_timer == UINT64_MAX) { + return 0; + } + + conn_get_loss_time_and_pktns(conn, &earliest_loss_time, &loss_pktns); + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_LDC, + "loss detection timer fired"); + + if (earliest_loss_time != UINT64_MAX) { + assert(loss_pktns); + + rv = ngtcp2_conn_detect_lost_pkt(conn, loss_pktns, cstat, ts); + if (rv != 0) { + return rv; + } + ngtcp2_conn_set_loss_detection_timer(conn, ts); + return 0; + } + + if (!conn->server && !conn_is_tls_handshake_completed(conn)) { + if (hs_pktns->crypto.tx.ckm) { + hs_pktns->rtb.probe_pkt_left = 1; + } else { + in_pktns->rtb.probe_pkt_left = 1; + } + } else { + if (in_pktns && in_pktns->rtb.num_pto_eliciting) { + in_pktns->rtb.probe_pkt_left = 1; + + assert(hs_pktns); + + if (conn->server && hs_pktns->rtb.num_pto_eliciting) { + /* let server coalesce packets */ + hs_pktns->rtb.probe_pkt_left = 1; + } + } else if (hs_pktns && hs_pktns->rtb.num_pto_eliciting) { + hs_pktns->rtb.probe_pkt_left = 2; + } else { + conn->pktns.rtb.probe_pkt_left = 2; + } + } + + ++cstat->pto_count; + + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_LDC, "pto_count=%zu", + cstat->pto_count); + + ngtcp2_conn_set_loss_detection_timer(conn, ts); + + return 0; +} + +static int conn_buffer_crypto_data(ngtcp2_conn *conn, const uint8_t **pdata, + ngtcp2_pktns *pktns, const uint8_t *data, + size_t datalen) { + int rv; + ngtcp2_buf_chain **pbufchain = &pktns->crypto.tx.data; + + if (*pbufchain) { + for (; (*pbufchain)->next; pbufchain = &(*pbufchain)->next) + ; + + if (ngtcp2_buf_left(&(*pbufchain)->buf) < datalen) { + pbufchain = &(*pbufchain)->next; + } + } + + if (!*pbufchain) { + rv = ngtcp2_buf_chain_new(pbufchain, ngtcp2_max_size(1024, datalen), + conn->mem); + if (rv != 0) { + return rv; + } + } + + *pdata = (*pbufchain)->buf.last; + (*pbufchain)->buf.last = ngtcp2_cpymem((*pbufchain)->buf.last, data, datalen); + + return 0; +} + +int ngtcp2_conn_submit_crypto_data(ngtcp2_conn *conn, + ngtcp2_encryption_level encryption_level, + const uint8_t *data, const size_t datalen) { + ngtcp2_pktns *pktns; + ngtcp2_frame_chain *frc; + ngtcp2_stream *fr; + int rv; + + if (datalen == 0) { + return 0; + } + + switch (encryption_level) { + case NGTCP2_ENCRYPTION_LEVEL_INITIAL: + assert(conn->in_pktns); + pktns = conn->in_pktns; + break; + case NGTCP2_ENCRYPTION_LEVEL_HANDSHAKE: + assert(conn->hs_pktns); + pktns = conn->hs_pktns; + break; + case NGTCP2_ENCRYPTION_LEVEL_1RTT: + pktns = &conn->pktns; + break; + default: + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + rv = conn_buffer_crypto_data(conn, &data, pktns, data, datalen); + if (rv != 0) { + return rv; + } + + rv = ngtcp2_frame_chain_objalloc_new(&frc, &conn->frc_objalloc); + if (rv != 0) { + return rv; + } + + fr = &frc->fr.stream; + + fr->type = NGTCP2_FRAME_CRYPTO; + fr->flags = 0; + fr->fin = 0; + fr->stream_id = 0; + fr->offset = pktns->crypto.tx.offset; + fr->datacnt = 1; + fr->data[0].len = datalen; + fr->data[0].base = (uint8_t *)data; + + rv = ngtcp2_strm_streamfrq_push(&pktns->crypto.strm, frc); + if (rv != 0) { + ngtcp2_frame_chain_objalloc_del(frc, &conn->frc_objalloc, conn->mem); + return rv; + } + + pktns->crypto.strm.tx.offset += datalen; + pktns->crypto.tx.offset += datalen; + + return 0; +} + +int ngtcp2_conn_submit_new_token(ngtcp2_conn *conn, const uint8_t *token, + size_t tokenlen) { + int rv; + ngtcp2_frame_chain *nfrc; + + assert(conn->server); + assert(token); + assert(tokenlen); + + rv = ngtcp2_frame_chain_new_token_objalloc_new( + &nfrc, token, tokenlen, &conn->frc_objalloc, conn->mem); + if (rv != 0) { + return rv; + } + + nfrc->next = conn->pktns.tx.frq; + conn->pktns.tx.frq = nfrc; + + return 0; +} + +ngtcp2_strm *ngtcp2_conn_tx_strmq_top(ngtcp2_conn *conn) { + assert(!ngtcp2_pq_empty(&conn->tx.strmq)); + return ngtcp2_struct_of(ngtcp2_pq_top(&conn->tx.strmq), ngtcp2_strm, pe); +} + +void ngtcp2_conn_tx_strmq_pop(ngtcp2_conn *conn) { + ngtcp2_strm *strm = ngtcp2_conn_tx_strmq_top(conn); + assert(strm); + ngtcp2_pq_pop(&conn->tx.strmq); + strm->pe.index = NGTCP2_PQ_BAD_INDEX; +} + +int ngtcp2_conn_tx_strmq_push(ngtcp2_conn *conn, ngtcp2_strm *strm) { + return ngtcp2_pq_push(&conn->tx.strmq, &strm->pe); +} + +static int conn_has_uncommitted_preferred_addr_cid(ngtcp2_conn *conn) { + return conn->server && + !(conn->flags & NGTCP2_CONN_FLAG_LOCAL_TRANSPORT_PARAMS_COMMITTED) && + conn->oscid.datalen && + conn->local.transport_params.preferred_addr_present; +} + +size_t ngtcp2_conn_get_scid(ngtcp2_conn *conn, ngtcp2_cid *dest) { + ngtcp2_cid *origdest = dest; + ngtcp2_ksl_it it; + ngtcp2_scid *scid; + + if (dest == NULL) { + return ngtcp2_ksl_len(&conn->scid.set) + + (size_t)conn_has_uncommitted_preferred_addr_cid(conn); + } + + for (it = ngtcp2_ksl_begin(&conn->scid.set); !ngtcp2_ksl_it_end(&it); + ngtcp2_ksl_it_next(&it)) { + scid = ngtcp2_ksl_it_get(&it); + *dest++ = scid->cid; + } + + if (conn_has_uncommitted_preferred_addr_cid(conn)) { + *dest++ = conn->local.transport_params.preferred_addr.cid; + } + + return (size_t)(dest - origdest); +} + +static size_t conn_get_num_active_dcid(ngtcp2_conn *conn) { + size_t n = 1; /* for conn->dcid.current */ + ngtcp2_pv *pv = conn->pv; + + if (pv) { + if (pv->dcid.seq != conn->dcid.current.seq) { + ++n; + } + if ((pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) && + pv->fallback_dcid.seq != conn->dcid.current.seq && + pv->fallback_dcid.seq != pv->dcid.seq) { + ++n; + } + } + + n += ngtcp2_ringbuf_len(&conn->dcid.retired.rb); + + return n; +} + +static void copy_dcid_to_cid_token(ngtcp2_cid_token *dest, + const ngtcp2_dcid *src) { + dest->seq = src->seq; + dest->cid = src->cid; + ngtcp2_path_storage_init2(&dest->ps, &src->ps.path); + if ((dest->token_present = + (src->flags & NGTCP2_DCID_FLAG_TOKEN_PRESENT) != 0)) { + memcpy(dest->token, src->token, NGTCP2_STATELESS_RESET_TOKENLEN); + } +} + +size_t ngtcp2_conn_get_active_dcid(ngtcp2_conn *conn, ngtcp2_cid_token *dest) { + ngtcp2_pv *pv = conn->pv; + ngtcp2_cid_token *orig = dest; + ngtcp2_dcid *dcid; + size_t len, i; + + if (!(conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_COMPLETED)) { + return 0; + } + + if (dest == NULL) { + return conn_get_num_active_dcid(conn); + } + + copy_dcid_to_cid_token(dest, &conn->dcid.current); + ++dest; + + if (pv) { + if (pv->dcid.seq != conn->dcid.current.seq) { + copy_dcid_to_cid_token(dest, &pv->dcid); + ++dest; + } + if ((pv->flags & NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE) && + pv->fallback_dcid.seq != conn->dcid.current.seq && + pv->fallback_dcid.seq != pv->dcid.seq) { + copy_dcid_to_cid_token(dest, &pv->fallback_dcid); + ++dest; + } + } + + len = ngtcp2_ringbuf_len(&conn->dcid.retired.rb); + for (i = 0; i < len; ++i) { + dcid = ngtcp2_ringbuf_get(&conn->dcid.retired.rb, i); + copy_dcid_to_cid_token(dest, dcid); + ++dest; + } + + return (size_t)(dest - orig); +} + +void ngtcp2_conn_set_local_addr(ngtcp2_conn *conn, const ngtcp2_addr *addr) { + ngtcp2_addr *dest = &conn->dcid.current.ps.path.local; + + assert(addr->addrlen <= + (ngtcp2_socklen)sizeof(conn->dcid.current.ps.local_addrbuf)); + ngtcp2_addr_copy(dest, addr); +} + +void ngtcp2_conn_set_path_user_data(ngtcp2_conn *conn, void *path_user_data) { + conn->dcid.current.ps.path.user_data = path_user_data; +} + +const ngtcp2_path *ngtcp2_conn_get_path(ngtcp2_conn *conn) { + return &conn->dcid.current.ps.path; +} + +size_t ngtcp2_conn_get_max_tx_udp_payload_size(ngtcp2_conn *conn) { + return conn->local.settings.max_tx_udp_payload_size; +} + +size_t ngtcp2_conn_get_path_max_tx_udp_payload_size(ngtcp2_conn *conn) { + if (conn->local.settings.no_tx_udp_payload_size_shaping) { + return ngtcp2_conn_get_max_tx_udp_payload_size(conn); + } + + return conn->dcid.current.max_udp_payload_size; +} + +static int conn_initiate_migration_precheck(ngtcp2_conn *conn, + const ngtcp2_addr *local_addr) { + if (!(conn->flags & NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED) || + conn->remote.transport_params->disable_active_migration || + conn->dcid.current.cid.datalen == 0 || + (conn->pv && (conn->pv->flags & NGTCP2_PV_FLAG_PREFERRED_ADDR))) { + return NGTCP2_ERR_INVALID_STATE; + } + + if (ngtcp2_ringbuf_len(&conn->dcid.unused.rb) == 0) { + return NGTCP2_ERR_CONN_ID_BLOCKED; + } + + if (ngtcp2_addr_eq(&conn->dcid.current.ps.path.local, local_addr)) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + return 0; +} + +int ngtcp2_conn_initiate_immediate_migration(ngtcp2_conn *conn, + const ngtcp2_path *path, + ngtcp2_tstamp ts) { + int rv; + ngtcp2_dcid *dcid; + ngtcp2_pv *pv; + + assert(!conn->server); + + conn_update_timestamp(conn, ts); + + rv = conn_initiate_migration_precheck(conn, &path->local); + if (rv != 0) { + return rv; + } + + ngtcp2_conn_stop_pmtud(conn); + + if (conn->pv) { + rv = conn_abort_pv(conn, ts); + if (rv != 0) { + return rv; + } + } + + rv = conn_retire_dcid(conn, &conn->dcid.current, ts); + if (rv != 0) { + return rv; + } + + dcid = ngtcp2_ringbuf_get(&conn->dcid.unused.rb, 0); + ngtcp2_dcid_set_path(dcid, path); + + ngtcp2_dcid_copy(&conn->dcid.current, dcid); + ngtcp2_ringbuf_pop_front(&conn->dcid.unused.rb); + + conn_reset_congestion_state(conn, ts); + conn_reset_ecn_validation_state(conn); + + /* TODO It might be better to add a new flag which indicates that a + connection should be closed if this path validation failed. The + current design allows an application to continue, by migrating + into yet another path. */ + rv = ngtcp2_pv_new(&pv, dcid, conn_compute_pv_timeout(conn), + NGTCP2_PV_FLAG_NONE, &conn->log, conn->mem); + if (rv != 0) { + return rv; + } + + conn->pv = pv; + + return conn_call_activate_dcid(conn, &conn->dcid.current); +} + +int ngtcp2_conn_initiate_migration(ngtcp2_conn *conn, const ngtcp2_path *path, + ngtcp2_tstamp ts) { + int rv; + ngtcp2_dcid *dcid; + ngtcp2_pv *pv; + + assert(!conn->server); + + conn_update_timestamp(conn, ts); + + rv = conn_initiate_migration_precheck(conn, &path->local); + if (rv != 0) { + return rv; + } + + if (conn->pv) { + rv = conn_abort_pv(conn, ts); + if (rv != 0) { + return rv; + } + } + + dcid = ngtcp2_ringbuf_get(&conn->dcid.unused.rb, 0); + ngtcp2_dcid_set_path(dcid, path); + + rv = ngtcp2_pv_new(&pv, dcid, conn_compute_pv_timeout(conn), + NGTCP2_PV_FLAG_NONE, &conn->log, conn->mem); + if (rv != 0) { + return rv; + } + + ngtcp2_ringbuf_pop_front(&conn->dcid.unused.rb); + conn->pv = pv; + + return conn_call_activate_dcid(conn, &pv->dcid); +} + +uint64_t ngtcp2_conn_get_max_data_left(ngtcp2_conn *conn) { + return conn->tx.max_offset - conn->tx.offset; +} + +uint64_t ngtcp2_conn_get_max_stream_data_left(ngtcp2_conn *conn, + int64_t stream_id) { + ngtcp2_strm *strm = ngtcp2_conn_find_stream(conn, stream_id); + + if (strm == NULL) { + return 0; + } + + return strm->tx.max_offset - strm->tx.offset; +} + +uint64_t ngtcp2_conn_get_streams_bidi_left(ngtcp2_conn *conn) { + uint64_t n = ngtcp2_ord_stream_id(conn->local.bidi.next_stream_id); + + return n > conn->local.bidi.max_streams + ? 0 + : conn->local.bidi.max_streams - n + 1; +} + +uint64_t ngtcp2_conn_get_streams_uni_left(ngtcp2_conn *conn) { + uint64_t n = ngtcp2_ord_stream_id(conn->local.uni.next_stream_id); + + return n > conn->local.uni.max_streams ? 0 + : conn->local.uni.max_streams - n + 1; +} + +uint64_t ngtcp2_conn_get_cwnd_left(ngtcp2_conn *conn) { + uint64_t bytes_in_flight = conn->cstat.bytes_in_flight; + uint64_t cwnd = conn_get_cwnd(conn); + + if (cwnd > bytes_in_flight) { + return cwnd - bytes_in_flight; + } + + return 0; +} + +ngtcp2_tstamp ngtcp2_conn_get_idle_expiry(ngtcp2_conn *conn) { + ngtcp2_duration trpto; + ngtcp2_duration idle_timeout; + + /* TODO Remote max_idle_timeout becomes effective after handshake + completion. */ + + if (!conn_is_tls_handshake_completed(conn) || + conn->remote.transport_params->max_idle_timeout == 0 || + (conn->local.transport_params.max_idle_timeout && + conn->local.transport_params.max_idle_timeout < + conn->remote.transport_params->max_idle_timeout)) { + idle_timeout = conn->local.transport_params.max_idle_timeout; + } else { + idle_timeout = conn->remote.transport_params->max_idle_timeout; + } + + if (idle_timeout == 0) { + return UINT64_MAX; + } + + trpto = 3 * conn_compute_pto(conn, conn_is_tls_handshake_completed(conn) + ? &conn->pktns + : conn->hs_pktns); + + idle_timeout = ngtcp2_max_uint64(idle_timeout, trpto); + + if (conn->idle_ts >= UINT64_MAX - idle_timeout) { + return UINT64_MAX; + } + + return conn->idle_ts + idle_timeout; +} + +ngtcp2_duration ngtcp2_conn_get_pto(ngtcp2_conn *conn) { + return conn_compute_pto(conn, conn_is_tls_handshake_completed(conn) + ? &conn->pktns + : conn->hs_pktns); +} + +void ngtcp2_conn_set_initial_crypto_ctx(ngtcp2_conn *conn, + const ngtcp2_crypto_ctx *ctx) { + assert(conn->in_pktns); + conn->in_pktns->crypto.ctx = *ctx; +} + +const ngtcp2_crypto_ctx *ngtcp2_conn_get_initial_crypto_ctx(ngtcp2_conn *conn) { + assert(conn->in_pktns); + return &conn->in_pktns->crypto.ctx; +} + +void ngtcp2_conn_set_retry_aead(ngtcp2_conn *conn, + const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx) { + assert(!conn->crypto.retry_aead_ctx.native_handle); + + conn->crypto.retry_aead = *aead; + conn->crypto.retry_aead_ctx = *aead_ctx; +} + +void ngtcp2_conn_set_crypto_ctx(ngtcp2_conn *conn, + const ngtcp2_crypto_ctx *ctx) { + assert(conn->hs_pktns); + conn->hs_pktns->crypto.ctx = *ctx; + conn->pktns.crypto.ctx = *ctx; +} + +const ngtcp2_crypto_ctx *ngtcp2_conn_get_crypto_ctx(ngtcp2_conn *conn) { + return &conn->pktns.crypto.ctx; +} + +void ngtcp2_conn_set_0rtt_crypto_ctx(ngtcp2_conn *conn, + const ngtcp2_crypto_ctx *ctx) { + conn->early.ctx = *ctx; +} + +const ngtcp2_crypto_ctx *ngtcp2_conn_get_0rtt_crypto_ctx(ngtcp2_conn *conn) { + return &conn->early.ctx; +} + +void *ngtcp2_conn_get_tls_native_handle(ngtcp2_conn *conn) { + return conn->crypto.tls_native_handle; +} + +void ngtcp2_conn_set_tls_native_handle(ngtcp2_conn *conn, + void *tls_native_handle) { + conn->crypto.tls_native_handle = tls_native_handle; +} + +const ngtcp2_ccerr *ngtcp2_conn_get_ccerr(ngtcp2_conn *conn) { + return &conn->rx.ccerr; +} + +void ngtcp2_conn_set_tls_error(ngtcp2_conn *conn, int liberr) { + conn->crypto.tls_error = liberr; +} + +int ngtcp2_conn_get_tls_error(ngtcp2_conn *conn) { + return conn->crypto.tls_error; +} + +void ngtcp2_conn_set_tls_alert(ngtcp2_conn *conn, uint8_t alert) { + conn->crypto.tls_alert = alert; +} + +uint8_t ngtcp2_conn_get_tls_alert(ngtcp2_conn *conn) { + return conn->crypto.tls_alert; +} + +int ngtcp2_conn_is_local_stream(ngtcp2_conn *conn, int64_t stream_id) { + return conn_local_stream(conn, stream_id); +} + +int ngtcp2_conn_is_server(ngtcp2_conn *conn) { return conn->server; } + +int ngtcp2_conn_after_retry(ngtcp2_conn *conn) { + return (conn->flags & NGTCP2_CONN_FLAG_RECV_RETRY) != 0; +} + +int ngtcp2_conn_set_stream_user_data(ngtcp2_conn *conn, int64_t stream_id, + void *stream_user_data) { + ngtcp2_strm *strm = ngtcp2_conn_find_stream(conn, stream_id); + + if (strm == NULL) { + return NGTCP2_ERR_STREAM_NOT_FOUND; + } + + strm->stream_user_data = stream_user_data; + + return 0; +} + +void ngtcp2_conn_update_pkt_tx_time(ngtcp2_conn *conn, ngtcp2_tstamp ts) { + ngtcp2_duration pacing_interval; + ngtcp2_duration wait; + + conn_update_timestamp(conn, ts); + + if (conn->tx.pacing.pktlen == 0) { + return; + } + + if (conn->cstat.pacing_interval) { + pacing_interval = conn->cstat.pacing_interval; + } else { + /* 1.25 is the under-utilization avoidance factor described in + https://datatracker.ietf.org/doc/html/rfc9002#section-7.7 */ + pacing_interval = (conn->cstat.first_rtt_sample_ts == UINT64_MAX + ? NGTCP2_MILLISECONDS + : conn->cstat.smoothed_rtt) * + 100 / 125 / conn->cstat.cwnd; + } + + wait = (ngtcp2_duration)(conn->tx.pacing.pktlen * pacing_interval); + + conn->tx.pacing.next_ts = ts + wait; + conn->tx.pacing.pktlen = 0; +} + +size_t ngtcp2_conn_get_send_quantum(ngtcp2_conn *conn) { + return conn->cstat.send_quantum; +} + +int ngtcp2_conn_track_retired_dcid_seq(ngtcp2_conn *conn, uint64_t seq) { + if (conn->dcid.retire_unacked.len >= + ngtcp2_arraylen(conn->dcid.retire_unacked.seqs)) { + return NGTCP2_ERR_CONNECTION_ID_LIMIT; + } + + conn->dcid.retire_unacked.seqs[conn->dcid.retire_unacked.len++] = seq; + + return 0; +} + +void ngtcp2_conn_untrack_retired_dcid_seq(ngtcp2_conn *conn, uint64_t seq) { + size_t i; + + for (i = 0; i < conn->dcid.retire_unacked.len; ++i) { + if (conn->dcid.retire_unacked.seqs[i] != seq) { + continue; + } + + if (i != conn->dcid.retire_unacked.len - 1) { + conn->dcid.retire_unacked.seqs[i] = + conn->dcid.retire_unacked.seqs[conn->dcid.retire_unacked.len - 1]; + } + + --conn->dcid.retire_unacked.len; + + return; + } +} + +int ngtcp2_conn_check_retired_dcid_tracked(ngtcp2_conn *conn, uint64_t seq) { + size_t i; + + for (i = 0; i < conn->dcid.retire_unacked.len; ++i) { + if (conn->dcid.retire_unacked.seqs[i] == seq) { + return 1; + } + } + + return 0; +} + +size_t ngtcp2_conn_get_stream_loss_count(ngtcp2_conn *conn, int64_t stream_id) { + ngtcp2_strm *strm = ngtcp2_conn_find_stream(conn, stream_id); + + if (strm == NULL) { + return 0; + } + + return strm->tx.loss_count; +} + +void ngtcp2_path_challenge_entry_init(ngtcp2_path_challenge_entry *pcent, + const ngtcp2_path *path, + const uint8_t *data) { + ngtcp2_path_storage_init2(&pcent->ps, path); + memcpy(pcent->data, data, sizeof(pcent->data)); +} + +/* The functions prefixed with ngtcp2_pkt_ are usually put inside + ngtcp2_pkt.c. This function uses encryption construct and uses + test data defined only in ngtcp2_conn_test.c, so it is written + here. */ +ngtcp2_ssize ngtcp2_pkt_write_connection_close( + uint8_t *dest, size_t destlen, uint32_t version, const ngtcp2_cid *dcid, + const ngtcp2_cid *scid, uint64_t error_code, const uint8_t *reason, + size_t reasonlen, ngtcp2_encrypt encrypt, const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx, const uint8_t *iv, + ngtcp2_hp_mask hp_mask, const ngtcp2_crypto_cipher *hp, + const ngtcp2_crypto_cipher_ctx *hp_ctx) { + ngtcp2_pkt_hd hd; + ngtcp2_crypto_km ckm; + ngtcp2_crypto_cc cc; + ngtcp2_ppe ppe; + ngtcp2_frame fr = {0}; + int rv; + + ngtcp2_pkt_hd_init(&hd, NGTCP2_PKT_FLAG_LONG_FORM, NGTCP2_PKT_INITIAL, dcid, + scid, /* pkt_num = */ 0, /* pkt_numlen = */ 1, version, + /* len = */ 0); + + ngtcp2_vec_init(&ckm.secret, NULL, 0); + ngtcp2_vec_init(&ckm.iv, iv, 12); + ckm.aead_ctx = *aead_ctx; + ckm.pkt_num = 0; + ckm.flags = NGTCP2_CRYPTO_KM_FLAG_NONE; + + cc.aead = *aead; + cc.hp = *hp; + cc.ckm = &ckm; + cc.hp_ctx = *hp_ctx; + cc.encrypt = encrypt; + cc.hp_mask = hp_mask; + + ngtcp2_ppe_init(&ppe, dest, destlen, 0, &cc); + + rv = ngtcp2_ppe_encode_hd(&ppe, &hd); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + return rv; + } + + if (!ngtcp2_ppe_ensure_hp_sample(&ppe)) { + return NGTCP2_ERR_NOBUF; + } + + fr.type = NGTCP2_FRAME_CONNECTION_CLOSE; + fr.connection_close.error_code = error_code; + fr.connection_close.reasonlen = reasonlen; + fr.connection_close.reason = (uint8_t *)reason; + + rv = ngtcp2_ppe_encode_frame(&ppe, &fr); + if (rv != 0) { + assert(NGTCP2_ERR_NOBUF == rv); + return rv; + } + + return ngtcp2_ppe_final(&ppe, NULL); +} + +int ngtcp2_is_bidi_stream(int64_t stream_id) { return bidi_stream(stream_id); } + +uint32_t ngtcp2_select_version(const uint32_t *preferred_versions, + size_t preferred_versionslen, + const uint32_t *offered_versions, + size_t offered_versionslen) { + size_t i, j; + + if (!preferred_versionslen || !offered_versionslen) { + return 0; + } + + for (i = 0; i < preferred_versionslen; ++i) { + assert(ngtcp2_is_supported_version(preferred_versions[i])); + + for (j = 0; j < offered_versionslen; ++j) { + if (preferred_versions[i] == offered_versions[j]) { + return preferred_versions[i]; + } + } + } + + return 0; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_conn.h b/contrib/libs/ngtcp2/lib/ngtcp2_conn.h new file mode 100644 index 0000000000..562628d089 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_conn.h @@ -0,0 +1,1174 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_CONN_H +#define NGTCP2_CONN_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_mem.h" +#include "ngtcp2_crypto.h" +#include "ngtcp2_acktr.h" +#include "ngtcp2_rtb.h" +#include "ngtcp2_strm.h" +#include "ngtcp2_idtr.h" +#include "ngtcp2_str.h" +#include "ngtcp2_pkt.h" +#include "ngtcp2_log.h" +#include "ngtcp2_pq.h" +#include "ngtcp2_cc.h" +#include "ngtcp2_bbr.h" +#include "ngtcp2_pv.h" +#include "ngtcp2_pmtud.h" +#include "ngtcp2_cid.h" +#include "ngtcp2_buf.h" +#include "ngtcp2_ppe.h" +#include "ngtcp2_qlog.h" +#include "ngtcp2_rst.h" +#include "ngtcp2_conn_stat.h" + +typedef enum { + /* Client specific handshake states */ + NGTCP2_CS_CLIENT_INITIAL, + NGTCP2_CS_CLIENT_WAIT_HANDSHAKE, + /* Server specific handshake states */ + NGTCP2_CS_SERVER_INITIAL, + NGTCP2_CS_SERVER_WAIT_HANDSHAKE, + /* Shared by both client and server */ + NGTCP2_CS_POST_HANDSHAKE, + NGTCP2_CS_CLOSING, + NGTCP2_CS_DRAINING, +} ngtcp2_conn_state; + +/* NGTCP2_MAX_NUM_BUFFED_RX_PKTS is the maximum number of buffered + reordered packets. */ +#define NGTCP2_MAX_NUM_BUFFED_RX_PKTS 4 + +/* NGTCP2_MAX_REORDERED_CRYPTO_DATA is the maximum offset of crypto + data which is not continuous. In other words, there is a gap of + unreceived data. */ +#define NGTCP2_MAX_REORDERED_CRYPTO_DATA 65536 + +/* NGTCP2_MAX_RETRIES is the number of Retry packet which client can + accept. */ +#define NGTCP2_MAX_RETRIES 3 + +/* NGTCP2_MAX_BOUND_DCID_POOL_SIZE is the maximum number of + destination connection ID which have been bound to a particular + path, but not yet used as primary path and path validation is not + performed from the local endpoint. */ +#define NGTCP2_MAX_BOUND_DCID_POOL_SIZE 4 +/* NGTCP2_MAX_DCID_POOL_SIZE is the maximum number of destination + connection ID the remote endpoint provides to store. It must be + the power of 2. */ +#define NGTCP2_MAX_DCID_POOL_SIZE 8 +/* NGTCP2_MAX_DCID_RETIRED_SIZE is the maximum number of retired DCID + kept to catch in-flight packet on retired path. */ +#define NGTCP2_MAX_DCID_RETIRED_SIZE 2 +/* NGTCP2_MAX_SCID_POOL_SIZE is the maximum number of source + connection ID the local endpoint provides to the remote endpoint. + The chosen value was described in old draft. Now a remote endpoint + tells the maximum value. The value can be quite large, and we have + to put the sane limit.*/ +#define NGTCP2_MAX_SCID_POOL_SIZE 8 + +/* NGTCP2_ECN_MAX_NUM_VALIDATION_PKTS is the maximum number of ECN marked + packets sent in NGTCP2_ECN_STATE_TESTING period. */ +#define NGTCP2_ECN_MAX_NUM_VALIDATION_PKTS 10 + +/* NGTCP2_CCERR_MAX_REASONLEN is the maximum length of reason phrase + to remember. If the received reason phrase is longer than this + value, it is truncated. */ +#define NGTCP2_CCERR_MAX_REASONLEN 1024 + +/* NGTCP2_WRITE_PKT_FLAG_NONE indicates that no flag is set. */ +#define NGTCP2_WRITE_PKT_FLAG_NONE 0x00u +/* NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING indicates that packet other + than Initial packet should be padded so that UDP datagram payload + is at least NGTCP2_MAX_UDP_PAYLOAD_SIZE bytes. Initial packet + might be padded based on QUIC requirement regardless of this + flag. */ +#define NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING 0x01u +/* NGTCP2_WRITE_PKT_FLAG_MORE indicates that more frames might come + and it should be encoded into the current packet. */ +#define NGTCP2_WRITE_PKT_FLAG_MORE 0x02u +/* NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING_FULL is just like + NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING, but it requests to add + padding to the full UDP datagram payload size. */ +#define NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING_FULL 0x04u + +/* + * ngtcp2_max_frame is defined so that it covers the largest ACK + * frame. + */ +typedef union ngtcp2_max_frame { + ngtcp2_frame fr; + struct { + ngtcp2_ack ack; + /* ack includes 1 ngtcp2_ack_range. */ + ngtcp2_ack_range ranges[NGTCP2_MAX_ACK_RANGES - 1]; + } ackfr; +} ngtcp2_max_frame; + +typedef struct ngtcp2_path_challenge_entry { + ngtcp2_path_storage ps; + uint8_t data[8]; +} ngtcp2_path_challenge_entry; + +void ngtcp2_path_challenge_entry_init(ngtcp2_path_challenge_entry *pcent, + const ngtcp2_path *path, + const uint8_t *data); + +/* NGTCP2_CONN_FLAG_NONE indicates that no flag is set. */ +#define NGTCP2_CONN_FLAG_NONE 0x00u +/* NGTCP2_CONN_FLAG_TLS_HANDSHAKE_COMPLETED is set when TLS stack + declares that TLS handshake has completed. The condition of this + declaration varies between TLS implementations and this flag does + not indicate the completion of QUIC handshake. Some + implementations declare TLS handshake completion as server when + they write off Server Finished and before deriving application rx + secret. */ +#define NGTCP2_CONN_FLAG_TLS_HANDSHAKE_COMPLETED 0x01u +/* NGTCP2_CONN_FLAG_INITIAL_PKT_PROCESSED is set when the first + Initial packet has successfully been processed. */ +#define NGTCP2_CONN_FLAG_INITIAL_PKT_PROCESSED 0x02u +/* NGTCP2_CONN_FLAG_TRANSPORT_PARAM_RECVED is set if transport + parameters are received. */ +#define NGTCP2_CONN_FLAG_TRANSPORT_PARAM_RECVED 0x04u +/* NGTCP2_CONN_FLAG_LOCAL_TRANSPORT_PARAMS_COMMITTED is set when a + local transport parameters are applied. */ +#define NGTCP2_CONN_FLAG_LOCAL_TRANSPORT_PARAMS_COMMITTED 0x08u +/* NGTCP2_CONN_FLAG_RECV_RETRY is set when a client receives Retry + packet. */ +#define NGTCP2_CONN_FLAG_RECV_RETRY 0x10u +/* NGTCP2_CONN_FLAG_EARLY_DATA_REJECTED is set when 0-RTT packet is + rejected by a peer. */ +#define NGTCP2_CONN_FLAG_EARLY_DATA_REJECTED 0x20u +/* NGTCP2_CONN_FLAG_KEEP_ALIVE_CANCELLED is set when the expired + keep-alive timer has been cancelled. */ +#define NGTCP2_CONN_FLAG_KEEP_ALIVE_CANCELLED 0x40u +/* NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED is set when an endpoint + confirmed completion of handshake. */ +#define NGTCP2_CONN_FLAG_HANDSHAKE_CONFIRMED 0x80u +/* NGTCP2_CONN_FLAG_HANDSHAKE_COMPLETED is set when the library + transitions its state to "post handshake". */ +#define NGTCP2_CONN_FLAG_HANDSHAKE_COMPLETED 0x0100u +/* NGTCP2_CONN_FLAG_HANDSHAKE_EARLY_RETRANSMIT is set when the early + handshake retransmission has done when server receives overlapping + Initial crypto data. */ +#define NGTCP2_CONN_FLAG_HANDSHAKE_EARLY_RETRANSMIT 0x0200u +/* NGTCP2_CONN_FLAG_CLEAR_FIXED_BIT indicates that the local endpoint + sends a QUIC packet without Fixed Bit set if a remote endpoint + supports Greasing QUIC Bit extension. */ +#define NGTCP2_CONN_FLAG_CLEAR_FIXED_BIT 0x0400u +/* NGTCP2_CONN_FLAG_KEY_UPDATE_NOT_CONFIRMED is set when key update is + not confirmed by the local endpoint. That is, it has not received + ACK frame which acknowledges packet which is encrypted with new + key. */ +#define NGTCP2_CONN_FLAG_KEY_UPDATE_NOT_CONFIRMED 0x0800u +/* NGTCP2_CONN_FLAG_PPE_PENDING is set when + NGTCP2_WRITE_STREAM_FLAG_MORE is used and the intermediate state of + ngtcp2_ppe is stored in pkt struct of ngtcp2_conn. */ +#define NGTCP2_CONN_FLAG_PPE_PENDING 0x1000u +/* NGTCP2_CONN_FLAG_RESTART_IDLE_TIMER_ON_WRITE is set when idle timer + should be restarted on next write. */ +#define NGTCP2_CONN_FLAG_RESTART_IDLE_TIMER_ON_WRITE 0x2000u +/* NGTCP2_CONN_FLAG_SERVER_ADDR_VERIFIED indicates that server as peer + verified client address. This flag is only used by client. */ +#define NGTCP2_CONN_FLAG_SERVER_ADDR_VERIFIED 0x4000u +/* NGTCP2_CONN_FLAG_EARLY_KEY_INSTALLED indicates that an early key is + installed. conn->early.ckm cannot be used for this purpose because + it might be discarded when a certain condition is met. */ +#define NGTCP2_CONN_FLAG_EARLY_KEY_INSTALLED 0x8000u +/* NGTCP2_CONN_FLAG_KEY_UPDATE_INITIATOR is set when the local + endpoint has initiated key update. */ +#define NGTCP2_CONN_FLAG_KEY_UPDATE_INITIATOR 0x10000u + +typedef struct ngtcp2_pktns { + struct { + /* last_pkt_num is the packet number which the local endpoint sent + last time.*/ + int64_t last_pkt_num; + ngtcp2_frame_chain *frq; + /* non_ack_pkt_start_ts is the timestamp since the local endpoint + starts sending continuous non ACK-eliciting packets. */ + ngtcp2_tstamp non_ack_pkt_start_ts; + + struct { + /* ect0 is the number of QUIC packets, not UDP datagram, which + are sent in UDP datagram with ECT0 marking. */ + size_t ect0; + /* start_pkt_num is the lowest packet number that are sent + during ECN validation period. */ + int64_t start_pkt_num; + /* validation_pkt_sent is the number of QUIC packets sent during + validation period. */ + size_t validation_pkt_sent; + /* validation_pkt_lost is the number of QUIC packets lost during + validation period. */ + size_t validation_pkt_lost; + } ecn; + } tx; + + struct { + /* pngap tracks received packet number in order to suppress + duplicated packet number. */ + ngtcp2_gaptr pngap; + /* max_pkt_num is the largest packet number received so far. */ + int64_t max_pkt_num; + /* max_pkt_ts is the timestamp when max_pkt_num packet is + received. */ + ngtcp2_tstamp max_pkt_ts; + /* max_ack_eliciting_pkt_num is the largest ack-eliciting packet + number received so far. */ + int64_t max_ack_eliciting_pkt_num; + /* + * buffed_pkts is buffered packets which cannot be decrypted with + * the current encryption level. + * + * In server Initial encryption level, 0-RTT packet may be buffered. + * In server Handshake encryption level, Short packet may be buffered. + * + * In client Initial encryption level, Handshake or Short packet may + * be buffered. In client Handshake encryption level, Short packet + * may be buffered. + * + * - 0-RTT packet is only buffered in server Initial encryption + * level ngtcp2_pktns. + * + * - Handshake packet is only buffered in client Handshake + * encryption level ngtcp2_pktns. + * + * - Short packet is only buffered in Short encryption level + * ngtcp2_pktns. + */ + ngtcp2_pkt_chain *buffed_pkts; + + struct { + /* ect0, ect1, and ce are the number of QUIC packets received + with those markings. */ + size_t ect0; + size_t ect1; + size_t ce; + struct { + /* ect0, ect1, ce are the ECN counts received in the latest + ACK frame. */ + uint64_t ect0; + uint64_t ect1; + uint64_t ce; + } ack; + } ecn; + } rx; + + struct { + struct { + /* offset is the offset of crypto stream in this packet number + space. */ + uint64_t offset; + /* ckm is a cryptographic key, and iv to encrypt outgoing + packets. */ + ngtcp2_crypto_km *ckm; + /* hp_ctx is cipher context for packet header protection. */ + ngtcp2_crypto_cipher_ctx hp_ctx; + /* data is the submitted crypto data. */ + ngtcp2_buf_chain *data; + } tx; + + struct { + /* ckm is a cryptographic key, and iv to decrypt incoming + packets. */ + ngtcp2_crypto_km *ckm; + /* hp_ctx is cipher context for packet header protection. */ + ngtcp2_crypto_cipher_ctx hp_ctx; + } rx; + + ngtcp2_strm strm; + ngtcp2_crypto_ctx ctx; + } crypto; + + ngtcp2_acktr acktr; + ngtcp2_rtb rtb; + ngtcp2_pktns_id id; +} ngtcp2_pktns; + +typedef enum ngtcp2_ecn_state { + NGTCP2_ECN_STATE_TESTING, + NGTCP2_ECN_STATE_UNKNOWN, + NGTCP2_ECN_STATE_FAILED, + NGTCP2_ECN_STATE_CAPABLE, +} ngtcp2_ecn_state; + +/* ngtcp2_early_transport_params is the values remembered by client + from the previous session. */ +typedef struct ngtcp2_early_transport_params { + uint64_t initial_max_streams_bidi; + uint64_t initial_max_streams_uni; + uint64_t initial_max_stream_data_bidi_local; + uint64_t initial_max_stream_data_bidi_remote; + uint64_t initial_max_stream_data_uni; + uint64_t initial_max_data; + uint64_t active_connection_id_limit; + uint64_t max_datagram_frame_size; +} ngtcp2_early_transport_params; + +ngtcp2_static_ringbuf_def(dcid_bound, NGTCP2_MAX_BOUND_DCID_POOL_SIZE, + sizeof(ngtcp2_dcid)); +ngtcp2_static_ringbuf_def(dcid_unused, NGTCP2_MAX_DCID_POOL_SIZE, + sizeof(ngtcp2_dcid)); +ngtcp2_static_ringbuf_def(dcid_retired, NGTCP2_MAX_DCID_RETIRED_SIZE, + sizeof(ngtcp2_dcid)); +ngtcp2_static_ringbuf_def(path_challenge, 4, + sizeof(ngtcp2_path_challenge_entry)); + +ngtcp2_objalloc_decl(strm, ngtcp2_strm, oplent); + +struct ngtcp2_conn { + ngtcp2_objalloc frc_objalloc; + ngtcp2_objalloc rtb_entry_objalloc; + ngtcp2_objalloc strm_objalloc; + ngtcp2_conn_state state; + ngtcp2_callbacks callbacks; + /* rcid is a connection ID present in Initial or 0-RTT packet from + client as destination connection ID. Server uses this field to + check that duplicated Initial or 0-RTT packet are indeed sent to + this connection. Client uses this field to validate + original_destination_connection_id transport parameter. */ + ngtcp2_cid rcid; + /* oscid is the source connection ID initially used by the local + endpoint. */ + ngtcp2_cid oscid; + /* retry_scid is the source connection ID from Retry packet. Client + records it in order to verify retry_source_connection_id + transport parameter. Server does not use this field. */ + ngtcp2_cid retry_scid; + ngtcp2_pktns *in_pktns; + ngtcp2_pktns *hs_pktns; + ngtcp2_pktns pktns; + + struct { + /* current is the current destination connection ID. */ + ngtcp2_dcid current; + /* bound is a set of destination connection IDs which are bound to + particular paths. These paths are not validated yet. */ + ngtcp2_static_ringbuf_dcid_bound bound; + /* unused is a set of unused CID received from peer. */ + ngtcp2_static_ringbuf_dcid_unused unused; + /* retired is a set of CID retired by local endpoint. Keep them + in 3*PTO to catch packets in flight along the old path. */ + ngtcp2_static_ringbuf_dcid_retired retired; + /* seqgap tracks received sequence numbers in order to ignore + retransmitted duplicated NEW_CONNECTION_ID frame. */ + ngtcp2_gaptr seqgap; + /* retire_prior_to is the largest retire_prior_to received so + far. */ + uint64_t retire_prior_to; + struct { + /* seqs contains sequence number of Connection ID whose + retirement is not acknowledged by the remote endpoint yet. */ + uint64_t seqs[NGTCP2_MAX_DCID_POOL_SIZE * 2]; + /* len is the number of sequence numbers that seq contains. */ + size_t len; + } retire_unacked; + /* zerolen_seq is a pseudo sequence number of zero-length + Destination Connection ID in order to distinguish between + them. */ + uint64_t zerolen_seq; + } dcid; + + struct { + /* set is a set of CID sent to peer. The peer can use any CIDs in + this set. This includes used CID as well as unused ones. */ + ngtcp2_ksl set; + /* used is a set of CID used by peer. The sort function of this + priority queue takes timestamp when CID is retired and sorts + them in ascending order. */ + ngtcp2_pq used; + /* last_seq is the last sequence number of connection ID. */ + uint64_t last_seq; + /* num_retired is the number of retired Connection ID still + included in set. */ + size_t num_retired; + /* num_in_flight is the number of NEW_CONNECTION_ID frames that + are in-flight and not acknowledged yet. */ + size_t num_in_flight; + } scid; + + struct { + /* strmq contains ngtcp2_strm which has frames to send. */ + ngtcp2_pq strmq; + /* ack is ACK frame. The underlying buffer is reused. */ + ngtcp2_frame *ack; + /* max_ack_ranges is the number of additional ngtcp2_ack_range + which ack can contain. */ + size_t max_ack_ranges; + /* offset is the offset the local endpoint has sent to the remote + endpoint. */ + uint64_t offset; + /* max_offset is the maximum offset that local endpoint can + send. */ + uint64_t max_offset; + /* last_blocked_offset is the largest offset where the + transmission of stream data is blocked. */ + uint64_t last_blocked_offset; + /* last_max_data_ts is the timestamp when last MAX_DATA frame is + sent. */ + ngtcp2_tstamp last_max_data_ts; + + struct { + /* state is the state of ECN validation */ + ngtcp2_ecn_state state; + /* validation_start_ts is the timestamp when ECN validation is + started. It is UINT64_MAX if it has not started yet. */ + ngtcp2_tstamp validation_start_ts; + /* dgram_sent is the number of UDP datagram sent during ECN + validation period. */ + size_t dgram_sent; + } ecn; + + struct { + /* pktlen is the number of bytes written before calling + ngtcp2_conn_update_pkt_tx_time which resets this field to + 0. */ + size_t pktlen; + /* next_ts is the time to send next packet. It is UINT64_MAX if + packet pacing is disabled or expired.*/ + ngtcp2_tstamp next_ts; + } pacing; + } tx; + + struct { + /* unsent_max_offset is the maximum offset that remote endpoint + can send without extending MAX_DATA. This limit is not yet + notified to the remote endpoint. */ + uint64_t unsent_max_offset; + /* offset is the cumulative sum of stream data received for this + connection. */ + uint64_t offset; + /* max_offset is the maximum offset that remote endpoint can + send. */ + uint64_t max_offset; + /* window is the connection-level flow control window size. */ + uint64_t window; + /* path_challenge stores received PATH_CHALLENGE data. */ + ngtcp2_static_ringbuf_path_challenge path_challenge; + /* ccerr is the received connection close error. */ + ngtcp2_ccerr ccerr; + } rx; + + struct { + ngtcp2_crypto_km *ckm; + ngtcp2_crypto_cipher_ctx hp_ctx; + ngtcp2_crypto_ctx ctx; + /* discard_started_ts is the timestamp when the timer to discard + early key has started. Used by server only. */ + ngtcp2_tstamp discard_started_ts; + /* transport_params is the values remembered by client from the + previous session. These are set by + ngtcp2_conn_set_early_remote_transport_params(). Server does + not use this field. Server must not set values for these + parameters that are smaller than the remembered values. */ + ngtcp2_early_transport_params transport_params; + } early; + + struct { + ngtcp2_settings settings; + /* transport_params is the local transport parameters. It is used + for Short packet only. */ + ngtcp2_transport_params transport_params; + struct { + /* max_streams is the maximum number of bidirectional streams which + the local endpoint can open. */ + uint64_t max_streams; + /* next_stream_id is the bidirectional stream ID which the local + endpoint opens next. */ + int64_t next_stream_id; + } bidi; + + struct { + /* max_streams is the maximum number of unidirectional streams + which the local endpoint can open. */ + uint64_t max_streams; + /* next_stream_id is the unidirectional stream ID which the + local endpoint opens next. */ + int64_t next_stream_id; + } uni; + } local; + + struct { + /* transport_params is the received transport parameters during + handshake. It is used for Short packet only. */ + ngtcp2_transport_params *transport_params; + /* pending_transport_params is received transport parameters + during handshake. It is copied to transport_params when 1RTT + key is available. */ + ngtcp2_transport_params *pending_transport_params; + struct { + ngtcp2_idtr idtr; + /* unsent_max_streams is the maximum number of streams of peer + initiated bidirectional stream which the local endpoint can + accept. This limit is not yet notified to the remote + endpoint. */ + uint64_t unsent_max_streams; + /* max_streams is the maximum number of streams of peer + initiated bidirectional stream which the local endpoint can + accept. */ + uint64_t max_streams; + } bidi; + + struct { + ngtcp2_idtr idtr; + /* unsent_max_streams is the maximum number of streams of peer + initiated unidirectional stream which the local endpoint can + accept. This limit is not yet notified to the remote + endpoint. */ + uint64_t unsent_max_streams; + /* max_streams is the maximum number of streams of peer + initiated unidirectional stream which the local endpoint can + accept. */ + uint64_t max_streams; + } uni; + } remote; + + struct { + struct { + /* new_tx_ckm is a new sender 1RTT key which has not been + used. */ + ngtcp2_crypto_km *new_tx_ckm; + /* new_rx_ckm is a new receiver 1RTT key which has not + successfully decrypted incoming packet yet. */ + ngtcp2_crypto_km *new_rx_ckm; + /* old_rx_ckm is an old receiver 1RTT key. */ + ngtcp2_crypto_km *old_rx_ckm; + /* confirmed_ts is the time instant when the key update is + confirmed by the local endpoint last time. UINT64_MAX means + undefined value. */ + ngtcp2_tstamp confirmed_ts; + } key_update; + + /* tls_native_handle is a native handle to TLS session object. */ + void *tls_native_handle; + /* decrypt_hp_buf is a buffer which is used to write unprotected + packet header. */ + ngtcp2_vec decrypt_hp_buf; + /* decrypt_buf is a buffer which is used to write decrypted data. */ + ngtcp2_vec decrypt_buf; + /* retry_aead is AEAD to verify Retry packet integrity. It is + used by client only. */ + ngtcp2_crypto_aead retry_aead; + /* retry_aead_ctx is AEAD cipher context to verify Retry packet + integrity. It is used by client only. */ + ngtcp2_crypto_aead_ctx retry_aead_ctx; + /* tls_error is TLS related error. */ + int tls_error; + /* tls_alert is TLS alert generated by the local endpoint. */ + uint8_t tls_alert; + /* decryption_failure_count is the number of received packets that + fail authentication. */ + uint64_t decryption_failure_count; + } crypto; + + /* pkt contains the packet intermediate construction data to support + NGTCP2_WRITE_STREAM_FLAG_MORE */ + struct { + ngtcp2_crypto_cc cc; + ngtcp2_pkt_hd hd; + ngtcp2_ppe ppe; + ngtcp2_frame_chain **pfrc; + int pkt_empty; + int hd_logged; + /* flags is bitwise OR of zero or more of + NGTCP2_RTB_ENTRY_FLAG_*. */ + uint16_t rtb_entry_flags; + ngtcp2_ssize hs_spktlen; + int require_padding; + } pkt; + + struct { + /* last_ts is a timestamp when a last packet is sent or received + on a current path. */ + ngtcp2_tstamp last_ts; + /* timeout is keep-alive timeout. When it expires, a packet + should be sent to a current path to keep connection alive. It + might be used to keep NAT binding intact. If 0 is set, + keep-alive timer is disabled. */ + ngtcp2_duration timeout; + } keep_alive; + + struct { + /* Initial keys for negotiated version. If original version == + negotiated version, these fields are not used. */ + struct { + ngtcp2_crypto_km *ckm; + ngtcp2_crypto_cipher_ctx hp_ctx; + } rx; + struct { + ngtcp2_crypto_km *ckm; + ngtcp2_crypto_cipher_ctx hp_ctx; + } tx; + /* version is QUIC version that the above Initial keys are created + for. */ + uint32_t version; + /* preferred_versions is the array of versions that are preferred + by the local endpoint. Server negotiates one of those versions + in this array if a client initially selects a less preferred + version. Client uses this field and original_version field to + prevent version downgrade attack if it reacted upon Version + Negotiation packet. */ + uint32_t *preferred_versions; + /* preferred_versionslen is the number of versions stored in the + array pointed by preferred_versions. This field is only used + by server. */ + size_t preferred_versionslen; + /* available_versions is the versions that the local endpoint + sends in version_information transport parameter. This is the + wire image of available_versions field of version_information + transport parameter. */ + uint8_t *available_versions; + /* available_versionslen is the length of data pointed by + available_versions field. */ + size_t available_versionslen; + } vneg; + + ngtcp2_map strms; + ngtcp2_conn_stat cstat; + ngtcp2_pv *pv; + ngtcp2_pmtud *pmtud; + ngtcp2_log log; + ngtcp2_qlog qlog; + ngtcp2_rst rst; + ngtcp2_cc_algo cc_algo; + union { + ngtcp2_cc cc; + ngtcp2_cc_reno reno; + ngtcp2_cc_cubic cubic; + ngtcp2_cc_bbr bbr; + }; + const ngtcp2_mem *mem; + /* idle_ts is the time instant when idle timer started. */ + ngtcp2_tstamp idle_ts; + void *user_data; + uint32_t client_chosen_version; + uint32_t negotiated_version; + /* flags is bitwise OR of zero or more of NGTCP2_CONN_FLAG_*. */ + uint32_t flags; + int server; +}; + +typedef enum ngtcp2_vmsg_type { + NGTCP2_VMSG_TYPE_STREAM, + NGTCP2_VMSG_TYPE_DATAGRAM, +} ngtcp2_vmsg_type; + +typedef struct ngtcp2_vmsg_stream { + /* strm is a stream that data is sent to. */ + ngtcp2_strm *strm; + /* flags is bitwise OR of zero or more of + NGTCP2_WRITE_STREAM_FLAG_*. */ + uint32_t flags; + /* data is the pointer to ngtcp2_vec array which contains the stream + data to send. */ + const ngtcp2_vec *data; + /* datacnt is the number of ngtcp2_vec pointed by data. */ + size_t datacnt; + /* pdatalen is the pointer to the variable which the number of bytes + written is assigned to if pdatalen is not NULL. */ + ngtcp2_ssize *pdatalen; +} ngtcp2_vmsg_stream; + +typedef struct ngtcp2_vmsg_datagram { + /* data is the pointer to ngtcp2_vec array which contains the data + to send. */ + const ngtcp2_vec *data; + /* datacnt is the number of ngtcp2_vec pointed by data. */ + size_t datacnt; + /* dgram_id is an opaque identifier chosen by an application. */ + uint64_t dgram_id; + /* flags is bitwise OR of zero or more of + NGTCP2_WRITE_DATAGRAM_FLAG_*. */ + uint32_t flags; + /* paccepted is the pointer to the variable which, if it is not + NULL, is assigned nonzero if data is written to a packet. */ + int *paccepted; +} ngtcp2_vmsg_datagram; + +typedef struct ngtcp2_vmsg { + ngtcp2_vmsg_type type; + union { + ngtcp2_vmsg_stream stream; + ngtcp2_vmsg_datagram datagram; + }; +} ngtcp2_vmsg; + +/* + * ngtcp2_conn_sched_ack stores packet number |pkt_num| and its + * reception timestamp |ts| in order to send its ACK. + * + * It returns 0 if it succeeds, or one of the following negative error + * codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + * NGTCP2_ERR_PROTO + * Same packet number has already been added. + */ +int ngtcp2_conn_sched_ack(ngtcp2_conn *conn, ngtcp2_acktr *acktr, + int64_t pkt_num, int active_ack, ngtcp2_tstamp ts); + +/* + * ngtcp2_conn_find_stream returns a stream whose stream ID is + * |stream_id|. If no such stream is found, it returns NULL. + */ +ngtcp2_strm *ngtcp2_conn_find_stream(ngtcp2_conn *conn, int64_t stream_id); + +/* + * conn_init_stream initializes |strm|. Its stream ID is |stream_id|. + * This function adds |strm| to conn->strms. |strm| must be allocated + * by the caller. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + * NGTCP2_ERR_CALLBACK_FAILURE + * User-callback function failed. + */ +int ngtcp2_conn_init_stream(ngtcp2_conn *conn, ngtcp2_strm *strm, + int64_t stream_id, void *stream_user_data); + +/* + * ngtcp2_conn_close_stream closes stream |strm|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_INVALID_ARGUMENT + * Stream is not found. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +int ngtcp2_conn_close_stream(ngtcp2_conn *conn, ngtcp2_strm *strm); + +/* + * ngtcp2_conn_close_stream closes stream |strm| if no further + * transmission and reception are allowed, and all reordered incoming + * data are emitted to the application, and the transmitted data are + * acked. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_INVALID_ARGUMENT + * Stream is not found. + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +int ngtcp2_conn_close_stream_if_shut_rdwr(ngtcp2_conn *conn, ngtcp2_strm *strm); + +/* + * ngtcp2_conn_update_rtt updates RTT measurements. |rtt| is a latest + * RTT which is not adjusted by ack delay. |ack_delay| is unscaled + * ack_delay included in ACK frame. |ack_delay| is actually tainted + * (sent by peer), so don't assume that |ack_delay| is always smaller + * than, or equals to |rtt|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_INVALID_ARGUMENT + * RTT sample is ignored. + */ +int ngtcp2_conn_update_rtt(ngtcp2_conn *conn, ngtcp2_duration rtt, + ngtcp2_duration ack_delay, ngtcp2_tstamp ts); + +void ngtcp2_conn_set_loss_detection_timer(ngtcp2_conn *conn, ngtcp2_tstamp ts); + +void ngtcp2_conn_cancel_loss_detection_timer(ngtcp2_conn *conn); + +int ngtcp2_conn_on_loss_detection_timer(ngtcp2_conn *conn, ngtcp2_tstamp ts); + +/* + * ngtcp2_conn_detect_lost_pkt detects lost packets. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_conn_detect_lost_pkt(ngtcp2_conn *conn, ngtcp2_pktns *pktns, + ngtcp2_conn_stat *cstat, ngtcp2_tstamp ts); + +/* + * ngtcp2_conn_tx_strmq_top returns the ngtcp2_strm which sits on the + * top of queue. tx_strmq must not be empty. + */ +ngtcp2_strm *ngtcp2_conn_tx_strmq_top(ngtcp2_conn *conn); + +/* + * ngtcp2_conn_tx_strmq_pop pops the ngtcp2_strm from the queue. + * tx_strmq must not be empty. + */ +void ngtcp2_conn_tx_strmq_pop(ngtcp2_conn *conn); + +/* + * ngtcp2_conn_tx_strmq_push pushes |strm| into tx_strmq. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_conn_tx_strmq_push(ngtcp2_conn *conn, ngtcp2_strm *strm); + +/* + * ngtcp2_conn_internal_expiry returns the minimum expiry time among + * all timers in |conn|. + */ +ngtcp2_tstamp ngtcp2_conn_internal_expiry(ngtcp2_conn *conn); + +ngtcp2_ssize ngtcp2_conn_write_vmsg(ngtcp2_conn *conn, ngtcp2_path *path, + int pkt_info_version, ngtcp2_pkt_info *pi, + uint8_t *dest, size_t destlen, + ngtcp2_vmsg *vmsg, ngtcp2_tstamp ts); + +/* + * ngtcp2_conn_write_single_frame_pkt writes a packet which contains + * |fr| frame only in the buffer pointed by |dest| whose length if + * |destlen|. |type| is a long packet type to send. If |type| is 0, + * Short packet is used. |dcid| is used as a destination connection + * ID. |flags| is zero or more of NGTCP2_WRITE_PKT_FLAG_*. Only + * NGTCP2_WRITE_PKT_FLAG_REQUIRE_PADDING is recognized. + * + * The packet written by this function will not be retransmitted. + * + * This function returns the number of bytes written in |dest| if it + * succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +ngtcp2_ssize ngtcp2_conn_write_single_frame_pkt( + ngtcp2_conn *conn, ngtcp2_pkt_info *pi, uint8_t *dest, size_t destlen, + uint8_t type, uint8_t flags, const ngtcp2_cid *dcid, ngtcp2_frame *fr, + uint16_t rtb_entry_flags, const ngtcp2_path *path, ngtcp2_tstamp ts); + +/* + * ngtcp2_conn_commit_local_transport_params commits the local + * transport parameters, which is currently set to + * conn->local.settings.transport_params. This function will do some + * amends on transport parameters for adjusting default values. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_INVALID_ARGUMENT + * CID in preferred address equals to the original SCID. + */ +int ngtcp2_conn_commit_local_transport_params(ngtcp2_conn *conn); + +/* + * ngtcp2_conn_lost_pkt_expiry returns the earliest expiry time of + * lost packet. + */ +ngtcp2_tstamp ngtcp2_conn_lost_pkt_expiry(ngtcp2_conn *conn); + +/* + * ngtcp2_conn_remove_lost_pkt removes the expired lost packet. + */ +void ngtcp2_conn_remove_lost_pkt(ngtcp2_conn *conn, ngtcp2_tstamp ts); + +uint64_t ngtcp2_conn_tx_strmq_first_cycle(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_ack_delay_expiry` returns the expiry time point of + * delayed protected ACK. One should call + * `ngtcp2_conn_cancel_expired_ack_delay_timer` and + * `ngtcp2_conn_write_pkt` (or `ngtcp2_conn_writev_stream`) when it + * expires. It returns UINT64_MAX if there is no expiry. + */ +ngtcp2_tstamp ngtcp2_conn_ack_delay_expiry(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_cancel_expired_ack_delay_timer` stops expired ACK + * delay timer. |ts| is the current time. This function must be + * called when `ngtcp2_conn_ack_delay_expiry` <= ts. + */ +void ngtcp2_conn_cancel_expired_ack_delay_timer(ngtcp2_conn *conn, + ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_conn_loss_detection_expiry` returns the expiry time point + * of loss detection timer. One should call + * `ngtcp2_conn_on_loss_detection_timer` and `ngtcp2_conn_write_pkt` + * (or `ngtcp2_conn_writev_stream`) when it expires. It returns + * UINT64_MAX if loss detection timer is not armed. + */ +ngtcp2_tstamp ngtcp2_conn_loss_detection_expiry(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_get_idle_expiry` returns the time when a connection + * should be closed if it continues to be idle. If idle timeout is + * disabled, this function returns ``UINT64_MAX``. + */ +ngtcp2_tstamp ngtcp2_conn_get_idle_expiry(ngtcp2_conn *conn); + +ngtcp2_duration ngtcp2_conn_compute_pto(ngtcp2_conn *conn, ngtcp2_pktns *pktns); + +/* + * ngtcp2_conn_track_retired_dcid_seq tracks the sequence number |seq| + * of unacknowledged retiring Destination Connection ID. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_CONNECTION_ID_LIMIT + * The number of unacknowledged retirement exceeds the limit. + */ +int ngtcp2_conn_track_retired_dcid_seq(ngtcp2_conn *conn, uint64_t seq); + +/* + * ngtcp2_conn_untrack_retired_dcid_seq deletes the sequence number + * |seq| of unacknowledged retiring Destination Connection ID. It is + * fine if such sequence number is not found. + */ +void ngtcp2_conn_untrack_retired_dcid_seq(ngtcp2_conn *conn, uint64_t seq); + +/* + * ngtcp2_conn_check_retired_dcid_tracked returns nonzero if |seq| has + * already been tracked. + */ +int ngtcp2_conn_check_retired_dcid_tracked(ngtcp2_conn *conn, uint64_t seq); + +/* + * ngtcp2_conn_server_negotiate_version negotiates QUIC version. It + * is compatible version negotiation. It returns the negotiated QUIC + * version. This function must not be called by client. + */ +uint32_t +ngtcp2_conn_server_negotiate_version(ngtcp2_conn *conn, + const ngtcp2_version_info *version_info); + +/** + * @function + * + * `ngtcp2_conn_write_connection_close_pkt` writes a packet which + * contains a CONNECTION_CLOSE frame (type 0x1c) in the buffer pointed + * by |dest| whose capacity is |datalen|. + * + * If |path| is not ``NULL``, this function stores the network path + * with which the packet should be sent. Each addr field must point + * to the buffer which should be at least ``sizeof(struct + * sockaddr_storage)`` bytes long. The assignment might not be done + * if nothing is written to |dest|. + * + * If |pi| is not ``NULL``, this function stores packet metadata in it + * if it succeeds. The metadata includes ECN markings. + * + * This function must not be called from inside the callback + * functions. + * + * At the moment, successful call to this function makes connection + * close. We may change this behaviour in the future to allow + * graceful shutdown. + * + * This function returns the number of bytes written in |dest| if it + * succeeds, or one of the following negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory + * :macro:`NGTCP2_ERR_NOBUF` + * Buffer is too small + * :macro:`NGTCP2_ERR_INVALID_STATE` + * The current state does not allow sending CONNECTION_CLOSE. + * :macro:`NGTCP2_ERR_PKT_NUM_EXHAUSTED` + * Packet number is exhausted, and cannot send any more packet. + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` + * User callback failed + */ +ngtcp2_ssize ngtcp2_conn_write_connection_close_pkt( + ngtcp2_conn *conn, ngtcp2_path *path, ngtcp2_pkt_info *pi, uint8_t *dest, + size_t destlen, uint64_t error_code, const uint8_t *reason, size_t reasonlen, + ngtcp2_tstamp ts); + +/** + * @function + * + * `ngtcp2_conn_write_application_close_pkt` writes a packet which + * contains a CONNECTION_CLOSE frame (type 0x1d) in the buffer pointed + * by |dest| whose capacity is |datalen|. + * + * If |path| is not ``NULL``, this function stores the network path + * with which the packet should be sent. Each addr field must point + * to the buffer which should be at least ``sizeof(struct + * sockaddr_storage)`` bytes long. The assignment might not be done + * if nothing is written to |dest|. + * + * If |pi| is not ``NULL``, this function stores packet metadata in it + * if it succeeds. The metadata includes ECN markings. + * + * If handshake has not been confirmed yet, CONNECTION_CLOSE (type + * 0x1c) with error code :macro:`NGTCP2_APPLICATION_ERROR` is written + * instead. + * + * This function must not be called from inside the callback + * functions. + * + * At the moment, successful call to this function makes connection + * close. We may change this behaviour in the future to allow + * graceful shutdown. + * + * This function returns the number of bytes written in |dest| if it + * succeeds, or one of the following negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory + * :macro:`NGTCP2_ERR_NOBUF` + * Buffer is too small + * :macro:`NGTCP2_ERR_INVALID_STATE` + * The current state does not allow sending CONNECTION_CLOSE. + * :macro:`NGTCP2_ERR_PKT_NUM_EXHAUSTED` + * Packet number is exhausted, and cannot send any more packet. + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` + * User callback failed + */ +ngtcp2_ssize ngtcp2_conn_write_application_close_pkt( + ngtcp2_conn *conn, ngtcp2_path *path, ngtcp2_pkt_info *pi, uint8_t *dest, + size_t destlen, uint64_t app_error_code, const uint8_t *reason, + size_t reasonlen, ngtcp2_tstamp ts); + +int ngtcp2_conn_start_pmtud(ngtcp2_conn *conn); + +void ngtcp2_conn_stop_pmtud(ngtcp2_conn *conn); + +/** + * @function + * + * `ngtcp2_conn_set_remote_transport_params` sets transport parameter + * |params| from a remote endpoint to |conn|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_TRANSPORT_PARAM` + * Failed to validate a remote transport parameters. + * :macro:`NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE` + * Version negotiation failure. + * :macro:`NGTCP2_ERR_CALLBACK_FAILURE` + * User callback failed + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + */ +int ngtcp2_conn_set_remote_transport_params( + ngtcp2_conn *conn, const ngtcp2_transport_params *params); + +/** + * @function + * + * `ngtcp2_conn_set_0rtt_remote_transport_params` sets |params| as + * transport parameters previously received from a server. The + * parameters are used to send early data. QUIC requires that client + * application should remember transport parameters along with a + * session ticket. + * + * At least following fields should be set: + * + * - initial_max_stream_id_bidi + * - initial_max_stream_id_uni + * - initial_max_stream_data_bidi_local + * - initial_max_stream_data_bidi_remote + * - initial_max_stream_data_uni + * - initial_max_data + * - active_connection_id_limit + * - max_datagram_frame_size (if DATAGRAM extension was negotiated) + * + * The following fields are ignored: + * + * - ack_delay_exponent + * - max_ack_delay + * - initial_scid + * - original_dcid + * - preferred_address and preferred_address_present + * - retry_scid and retry_scid_present + * - stateless_reset_token and stateless_reset_token_present + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * :macro:`NGTCP2_ERR_NOMEM` + * Out of memory. + */ +int ngtcp2_conn_set_0rtt_remote_transport_params( + ngtcp2_conn *conn, const ngtcp2_transport_params *params); + +/* + * ngtcp2_conn_create_ack_frame creates ACK frame, and assigns its + * pointer to |*pfr| if there are any received packets to acknowledge. + * If there are no packets to acknowledge, this function returns 0, + * and |*pfr| is untouched. The caller is advised to set |*pfr| to + * NULL before calling this function, and check it after this function + * returns. + * + * Call ngtcp2_acktr_commit_ack after a created ACK frame is + * successfully serialized into a packet. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_conn_create_ack_frame(ngtcp2_conn *conn, ngtcp2_frame **pfr, + ngtcp2_pktns *pktns, uint8_t type, + ngtcp2_tstamp ts, ngtcp2_duration ack_delay, + uint64_t ack_delay_exponent); + +/* + * ngtcp2_conn_discard_initial_state discards state for Initial packet + * number space. + */ +void ngtcp2_conn_discard_initial_state(ngtcp2_conn *conn, ngtcp2_tstamp ts); + +/* + * ngtcp2_conn_discard_handshake_state discards state for Handshake + * packet number space. + */ +void ngtcp2_conn_discard_handshake_state(ngtcp2_conn *conn, ngtcp2_tstamp ts); + +#endif /* !defined(NGTCP2_CONN_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_conn_stat.h b/contrib/libs/ngtcp2/lib/ngtcp2_conn_stat.h new file mode 100644 index 0000000000..ad2b7329f4 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_conn_stat.h @@ -0,0 +1,133 @@ +/* + * ngtcp2 + * + * Copyright (c) 2023 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_CONN_STAT_H +#define NGTCP2_CONN_STAT_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +/** + * @struct + * + * :type:`ngtcp2_conn_stat` holds various connection statistics, and + * computed data for recovery and congestion controller. + */ +typedef struct ngtcp2_conn_stat { + /** + * :member:`latest_rtt` is the latest RTT sample which is not + * adjusted by acknowledgement delay. + */ + ngtcp2_duration latest_rtt; + /** + * :member:`min_rtt` is the minimum RTT seen so far. It is not + * adjusted by acknowledgement delay. + */ + ngtcp2_duration min_rtt; + /** + * :member:`smoothed_rtt` is the smoothed RTT. + */ + ngtcp2_duration smoothed_rtt; + /** + * :member:`rttvar` is a mean deviation of observed RTT. + */ + ngtcp2_duration rttvar; + /** + * :member:`initial_rtt` is the initial RTT which is used when no + * RTT sample is available. + */ + ngtcp2_duration initial_rtt; + /** + * :member:`first_rtt_sample_ts` is the timestamp when the first RTT + * sample is obtained. + */ + ngtcp2_tstamp first_rtt_sample_ts; + /** + * :member:`pto_count` is the count of successive PTO timer + * expiration. + */ + size_t pto_count; + /** + * :member:`loss_detection_timer` is the deadline of the current + * loss detection timer. + */ + ngtcp2_tstamp loss_detection_timer; + /** + * :member:`last_tx_pkt_ts` corresponds to + * time_of_last_ack_eliciting_packet in :rfc:`9002`. + */ + ngtcp2_tstamp last_tx_pkt_ts[NGTCP2_PKTNS_ID_MAX]; + /** + * :member:`loss_time` corresponds to loss_time in :rfc:`9002`. + */ + ngtcp2_tstamp loss_time[NGTCP2_PKTNS_ID_MAX]; + /** + * :member:`cwnd` is the size of congestion window. + */ + uint64_t cwnd; + /** + * :member:`ssthresh` is slow start threshold. + */ + uint64_t ssthresh; + /** + * :member:`congestion_recovery_start_ts` is the timestamp when + * congestion recovery started. + */ + ngtcp2_tstamp congestion_recovery_start_ts; + /** + * :member:`bytes_in_flight` is the number in bytes of all sent + * packets which have not been acknowledged. + */ + uint64_t bytes_in_flight; + /** + * :member:`max_tx_udp_payload_size` is the maximum size of UDP + * datagram payload that this endpoint transmits to the current + * path. It is used by congestion controller to compute congestion + * window. + */ + size_t max_tx_udp_payload_size; + /** + * :member:`delivery_rate_sec` is the current sending rate measured + * in byte per second. + */ + uint64_t delivery_rate_sec; + /** + * :member:`pacing_interval` is the inverse of pacing rate, which is + * the current packet sending rate computed by a congestion + * controller. 0 if a congestion controller does not set pacing + * interval. Even if this value is set to 0, the library paces + * packets. + */ + ngtcp2_duration pacing_interval; + /** + * :member:`send_quantum` is the maximum size of a data aggregate + * scheduled and transmitted together. + */ + size_t send_quantum; +} ngtcp2_conn_stat; + +#endif /* !defined(NGTCP2_CONN_STAT_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_conv.c b/contrib/libs/ngtcp2/lib/ngtcp2_conv.c new file mode 100644 index 0000000000..6528011cc0 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_conv.c @@ -0,0 +1,222 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_conv.h" + +#include <string.h> +#include <assert.h> + +#include "ngtcp2_str.h" +#include "ngtcp2_pkt.h" +#include "ngtcp2_net.h" +#include "ngtcp2_unreachable.h" + +const uint8_t *ngtcp2_get_uint64be(uint64_t *dest, const uint8_t *p) { + memcpy(dest, p, sizeof(*dest)); + *dest = ngtcp2_ntohl64(*dest); + return p + sizeof(*dest); +} + +const uint8_t *ngtcp2_get_uint32be(uint32_t *dest, const uint8_t *p) { + memcpy(dest, p, sizeof(*dest)); + *dest = ngtcp2_ntohl(*dest); + return p + sizeof(*dest); +} + +const uint8_t *ngtcp2_get_uint24be(uint32_t *dest, const uint8_t *p) { + *dest = 0; + memcpy(((uint8_t *)dest) + 1, p, 3); + *dest = ngtcp2_ntohl(*dest); + return p + 3; +} + +const uint8_t *ngtcp2_get_uint16be(uint16_t *dest, const uint8_t *p) { + memcpy(dest, p, sizeof(*dest)); + *dest = ngtcp2_ntohs(*dest); + return p + sizeof(*dest); +} + +const uint8_t *ngtcp2_get_uint16(uint16_t *dest, const uint8_t *p) { + memcpy(dest, p, sizeof(*dest)); + return p + sizeof(*dest); +} + +static const uint8_t *get_uvarint(uint64_t *dest, const uint8_t *p) { + union { + uint8_t n8; + uint16_t n16; + uint32_t n32; + uint64_t n64; + } n; + + switch (*p >> 6) { + case 0: + *dest = *p++; + return p; + case 1: + memcpy(&n, p, 2); + n.n8 &= 0x3f; + *dest = ngtcp2_ntohs(n.n16); + + return p + 2; + case 2: + memcpy(&n, p, 4); + n.n8 &= 0x3f; + *dest = ngtcp2_ntohl(n.n32); + + return p + 4; + case 3: + memcpy(&n, p, 8); + n.n8 &= 0x3f; + *dest = ngtcp2_ntohl64(n.n64); + + return p + 8; + default: + ngtcp2_unreachable(); + } +} + +const uint8_t *ngtcp2_get_uvarint(uint64_t *dest, const uint8_t *p) { + return get_uvarint(dest, p); +} + +const uint8_t *ngtcp2_get_varint(int64_t *dest, const uint8_t *p) { + return get_uvarint((uint64_t *)dest, p); +} + +int64_t ngtcp2_get_pkt_num(const uint8_t *p, size_t pkt_numlen) { + uint32_t l; + uint16_t s; + + switch (pkt_numlen) { + case 1: + return *p; + case 2: + ngtcp2_get_uint16be(&s, p); + return (int64_t)s; + case 3: + ngtcp2_get_uint24be(&l, p); + return (int64_t)l; + case 4: + ngtcp2_get_uint32be(&l, p); + return (int64_t)l; + default: + ngtcp2_unreachable(); + } +} + +uint8_t *ngtcp2_put_uint64be(uint8_t *p, uint64_t n) { + n = ngtcp2_htonl64(n); + return ngtcp2_cpymem(p, (const uint8_t *)&n, sizeof(n)); +} + +uint8_t *ngtcp2_put_uint32be(uint8_t *p, uint32_t n) { + n = ngtcp2_htonl(n); + return ngtcp2_cpymem(p, (const uint8_t *)&n, sizeof(n)); +} + +uint8_t *ngtcp2_put_uint24be(uint8_t *p, uint32_t n) { + n = ngtcp2_htonl(n); + return ngtcp2_cpymem(p, ((const uint8_t *)&n) + 1, 3); +} + +uint8_t *ngtcp2_put_uint16be(uint8_t *p, uint16_t n) { + n = ngtcp2_htons(n); + return ngtcp2_cpymem(p, (const uint8_t *)&n, sizeof(n)); +} + +uint8_t *ngtcp2_put_uint16(uint8_t *p, uint16_t n) { + return ngtcp2_cpymem(p, (const uint8_t *)&n, sizeof(n)); +} + +uint8_t *ngtcp2_put_uvarint(uint8_t *p, uint64_t n) { + uint8_t *rv; + if (n < 64) { + *p++ = (uint8_t)n; + return p; + } + if (n < 16384) { + rv = ngtcp2_put_uint16be(p, (uint16_t)n); + *p |= 0x40; + return rv; + } + if (n < 1073741824) { + rv = ngtcp2_put_uint32be(p, (uint32_t)n); + *p |= 0x80; + return rv; + } + assert(n < 4611686018427387904ULL); + rv = ngtcp2_put_uint64be(p, n); + *p |= 0xc0; + return rv; +} + +uint8_t *ngtcp2_put_uvarint30(uint8_t *p, uint32_t n) { + uint8_t *rv; + + assert(n < 1073741824); + + rv = ngtcp2_put_uint32be(p, n); + *p |= 0x80; + + return rv; +} + +uint8_t *ngtcp2_put_pkt_num(uint8_t *p, int64_t pkt_num, size_t len) { + switch (len) { + case 1: + *p++ = (uint8_t)pkt_num; + return p; + case 2: + return ngtcp2_put_uint16be(p, (uint16_t)pkt_num); + case 3: + return ngtcp2_put_uint24be(p, (uint32_t)pkt_num); + case 4: + return ngtcp2_put_uint32be(p, (uint32_t)pkt_num); + default: + ngtcp2_unreachable(); + } +} + +size_t ngtcp2_get_uvarintlen(const uint8_t *p) { + return (size_t)(1u << (*p >> 6)); +} + +size_t ngtcp2_put_uvarintlen(uint64_t n) { + if (n < 64) { + return 1; + } + if (n < 16384) { + return 2; + } + if (n < 1073741824) { + return 4; + } + assert(n < 4611686018427387904ULL); + return 8; +} + +uint64_t ngtcp2_ord_stream_id(int64_t stream_id) { + return (uint64_t)(stream_id >> 2) + 1; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_conv.h b/contrib/libs/ngtcp2/lib/ngtcp2_conv.h new file mode 100644 index 0000000000..ad924683b8 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_conv.h @@ -0,0 +1,162 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_CONV_H +#define NGTCP2_CONV_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +/* + * ngtcp2_get_uint64be reads 8 bytes from |p| as 64 bits unsigned + * integer encoded as network byte order, and stores it in the buffer + * pointed by |dest| in host byte order. It returns |p| + 8. + */ +const uint8_t *ngtcp2_get_uint64be(uint64_t *dest, const uint8_t *p); + +/* + * ngtcp2_get_uint32be reads 4 bytes from |p| as 32 bits unsigned + * integer encoded as network byte order, and stores it in the buffer + * pointed by |dest| in host byte order. It returns |p| + 4. + */ +const uint8_t *ngtcp2_get_uint32be(uint32_t *dest, const uint8_t *p); + +/* + * ngtcp2_get_uint24be reads 3 bytes from |p| as 24 bits unsigned + * integer encoded as network byte order, and stores it in the buffer + * pointed by |dest| in host byte order. It returns |p| + 3. + */ +const uint8_t *ngtcp2_get_uint24be(uint32_t *dest, const uint8_t *p); + +/* + * ngtcp2_get_uint16be reads 2 bytes from |p| as 16 bits unsigned + * integer encoded as network byte order, and stores it in the buffer + * pointed by |dest| in host byte order. It returns |p| + 2. + */ +const uint8_t *ngtcp2_get_uint16be(uint16_t *dest, const uint8_t *p); + +/* + * ngtcp2_get_uint16 reads 2 bytes from |p| as 16 bits unsigned + * integer encoded as network byte order, and stores it in the buffer + * pointed by |dest| as is. It returns |p| + 2. + */ +const uint8_t *ngtcp2_get_uint16(uint16_t *dest, const uint8_t *p); + +/* + * ngtcp2_get_uvarint reads variable-length unsigned integer from |p|, + * and stores it in the buffer pointed by |dest| in host byte order. + * It returns |p| plus the number of bytes read from |p|. + */ +const uint8_t *ngtcp2_get_uvarint(uint64_t *dest, const uint8_t *p); + +/* + * ngtcp2_get_varint reads variable-length unsigned integer from |p|, + * and casts it to the signed integer, and stores it in the buffer + * pointed by |dest| in host byte order. No information should be + * lost in this cast, because the variable-length integer is 62 + * bits. It returns |p| plus the number of bytes read from |p|. + */ +const uint8_t *ngtcp2_get_varint(int64_t *dest, const uint8_t *p); + +/* + * ngtcp2_get_pkt_num reads encoded packet number from |p|. The + * packet number is encoed in |pkt_numlen| bytes. + */ +int64_t ngtcp2_get_pkt_num(const uint8_t *p, size_t pkt_numlen); + +/* + * ngtcp2_put_uint64be writes |n| in host byte order in |p| in network + * byte order. It returns the one beyond of the last written + * position. + */ +uint8_t *ngtcp2_put_uint64be(uint8_t *p, uint64_t n); + +/* + * ngtcp2_put_uint32be writes |n| in host byte order in |p| in network + * byte order. It returns the one beyond of the last written + * position. + */ +uint8_t *ngtcp2_put_uint32be(uint8_t *p, uint32_t n); + +/* + * ngtcp2_put_uint24be writes |n| in host byte order in |p| in network + * byte order. It writes only least significant 24 bits. It returns + * the one beyond of the last written position. + */ +uint8_t *ngtcp2_put_uint24be(uint8_t *p, uint32_t n); + +/* + * ngtcp2_put_uint16be writes |n| in host byte order in |p| in network + * byte order. It returns the one beyond of the last written + * position. + */ +uint8_t *ngtcp2_put_uint16be(uint8_t *p, uint16_t n); + +/* + * ngtcp2_put_uint16 writes |n| as is in |p|. It returns the one + * beyond of the last written position. + */ +uint8_t *ngtcp2_put_uint16(uint8_t *p, uint16_t n); + +/* + * ngtcp2_put_uvarint writes |n| in |p| using variable-length integer + * encoding. It returns the one beyond of the last written position. + */ +uint8_t *ngtcp2_put_uvarint(uint8_t *p, uint64_t n); + +/* + * ngtcp2_put_uvarint30 writes |n| in |p| using variable-length + * integer encoding. |n| must be strictly less than 1073741824. The + * function always encodes |n| in 4 bytes. It returns the one beyond + * of the last written position. + */ +uint8_t *ngtcp2_put_uvarint30(uint8_t *p, uint32_t n); + +/* + * ngtcp2_put_pkt_num encodes |pkt_num| using |len| bytes. It + * returns the one beyond of the last written position. + */ +uint8_t *ngtcp2_put_pkt_num(uint8_t *p, int64_t pkt_num, size_t len); + +/* + * ngtcp2_get_uvarintlen returns the required number of bytes to read + * variable-length integer starting at |p|. + */ +size_t ngtcp2_get_uvarintlen(const uint8_t *p); + +/* + * ngtcp2_put_uvarintlen returns the required number of bytes to + * encode |n|. + */ +size_t ngtcp2_put_uvarintlen(uint64_t n); + +/* + * ngtcp2_ord_stream_id returns the ordinal number of |stream_id|. + */ +uint64_t ngtcp2_ord_stream_id(int64_t stream_id); + +#endif /* !defined(NGTCP2_CONV_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_crypto.c b/contrib/libs/ngtcp2/lib/ngtcp2_crypto.c new file mode 100644 index 0000000000..1f74e8c583 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_crypto.c @@ -0,0 +1,112 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_crypto.h" + +#include <string.h> +#include <assert.h> + +#include "ngtcp2_net.h" + +int ngtcp2_crypto_km_new(ngtcp2_crypto_km **pckm, const uint8_t *secret, + size_t secretlen, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *iv, size_t ivlen, + const ngtcp2_mem *mem) { + int rv = ngtcp2_crypto_km_nocopy_new(pckm, secretlen, ivlen, mem); + if (rv != 0) { + return rv; + } + + if (secretlen) { + memcpy((*pckm)->secret.base, secret, secretlen); + } + + if (aead_ctx) { + (*pckm)->aead_ctx = *aead_ctx; + } + + memcpy((*pckm)->iv.base, iv, ivlen); + + return 0; +} + +int ngtcp2_crypto_km_nocopy_new(ngtcp2_crypto_km **pckm, size_t secretlen, + size_t ivlen, const ngtcp2_mem *mem) { + size_t len; + uint8_t *p; + + len = sizeof(ngtcp2_crypto_km) + secretlen + ivlen; + + *pckm = ngtcp2_mem_malloc(mem, len); + if (*pckm == NULL) { + return NGTCP2_ERR_NOMEM; + } + + p = (uint8_t *)(*pckm) + sizeof(ngtcp2_crypto_km); + (*pckm)->secret.base = p; + (*pckm)->secret.len = secretlen; + p += secretlen; + (*pckm)->iv.base = p; + (*pckm)->iv.len = ivlen; + (*pckm)->aead_ctx.native_handle = NULL; + (*pckm)->pkt_num = -1; + (*pckm)->use_count = 0; + (*pckm)->flags = NGTCP2_CRYPTO_KM_FLAG_NONE; + + return 0; +} + +void ngtcp2_crypto_km_del(ngtcp2_crypto_km *ckm, const ngtcp2_mem *mem) { + if (ckm == NULL) { + return; + } + + if (ckm->secret.len) { +#ifdef WIN32 + SecureZeroMemory(ckm->secret.base, ckm->secret.len); +#elif defined(HAVE_EXPLICIT_BZERO) + explicit_bzero(ckm->secret.base, ckm->secret.len); +#elif defined(HAVE_MEMSET_S) + memset_s(ckm->secret.base, ckm->secret.len, 0, ckm->secret.len); +#endif /* defined(HAVE_MEMSET_S) */ + } + + ngtcp2_mem_free(mem, ckm); +} + +void ngtcp2_crypto_create_nonce(uint8_t *dest, const uint8_t *iv, size_t ivlen, + int64_t pkt_num) { + uint64_t n; + + assert(ivlen >= sizeof(n)); + + memcpy(dest, iv, ivlen); + + dest += ivlen - sizeof(n); + + memcpy(&n, dest, sizeof(n)); + n ^= ngtcp2_htonl64((uint64_t)pkt_num); + memcpy(dest, &n, sizeof(n)); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_crypto.h b/contrib/libs/ngtcp2/lib/ngtcp2_crypto.h new file mode 100644 index 0000000000..ca6d494846 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_crypto.h @@ -0,0 +1,102 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_CRYPTO_H +#define NGTCP2_CRYPTO_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_mem.h" + +/* NGTCP2_INITIAL_AEAD_OVERHEAD is an overhead of AEAD used by Initial + packets. Because QUIC uses AEAD_AES_128_GCM, the overhead is 16 + bytes. */ +#define NGTCP2_INITIAL_AEAD_OVERHEAD 16 + +/* NGTCP2_MAX_AEAD_OVERHEAD is the maximum AEAD overhead. */ +#define NGTCP2_MAX_AEAD_OVERHEAD 16 + +/* NGTCP2_CRYPTO_KM_FLAG_NONE indicates that no flag is set. */ +#define NGTCP2_CRYPTO_KM_FLAG_NONE 0x00u +/* NGTCP2_CRYPTO_KM_FLAG_KEY_PHASE_ONE is set if key phase bit is + set. */ +#define NGTCP2_CRYPTO_KM_FLAG_KEY_PHASE_ONE 0x01u + +typedef struct ngtcp2_crypto_km { + ngtcp2_vec secret; + ngtcp2_crypto_aead_ctx aead_ctx; + ngtcp2_vec iv; + /* pkt_num is a packet number of a packet which uses this keying + material. For encryption key, it is the lowest packet number of + a packet. For decryption key, it is the lowest packet number of + a packet which can be decrypted with this keying material. */ + int64_t pkt_num; + /* use_count is the number of encryption applied with this key. */ + uint64_t use_count; + /* flags is the bitwise OR of zero or more of + NGTCP2_CRYPTO_KM_FLAG_*. */ + uint8_t flags; +} ngtcp2_crypto_km; + +/* + * ngtcp2_crypto_km_new creates new ngtcp2_crypto_km object, and + * assigns its pointer to |*pckm|. The |secret| of length + * |secretlen|, |aead_ctx|, and the |iv| of length |ivlen| are copied + * to |*pckm|. If |secretlen| == 0, the function assumes no secret is + * given which is acceptable. The sole reason to store secret is + * update keys. Only 1RTT key can be updated. + */ +int ngtcp2_crypto_km_new(ngtcp2_crypto_km **pckm, const uint8_t *secret, + size_t secretlen, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *iv, size_t ivlen, + const ngtcp2_mem *mem); + +/* + * ngtcp2_crypto_km_nocopy_new is similar to ngtcp2_crypto_km_new, but + * it does not copy secret, aead context, and IV. + */ +int ngtcp2_crypto_km_nocopy_new(ngtcp2_crypto_km **pckm, size_t secretlen, + size_t ivlen, const ngtcp2_mem *mem); + +void ngtcp2_crypto_km_del(ngtcp2_crypto_km *ckm, const ngtcp2_mem *mem); + +typedef struct ngtcp2_crypto_cc { + ngtcp2_crypto_aead aead; + ngtcp2_crypto_cipher hp; + ngtcp2_crypto_km *ckm; + ngtcp2_crypto_cipher_ctx hp_ctx; + ngtcp2_encrypt encrypt; + ngtcp2_decrypt decrypt; + ngtcp2_hp_mask hp_mask; +} ngtcp2_crypto_cc; + +void ngtcp2_crypto_create_nonce(uint8_t *dest, const uint8_t *iv, size_t ivlen, + int64_t pkt_num); + +#endif /* !defined(NGTCP2_CRYPTO_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_crypto_quictls.c b/contrib/libs/ngtcp2/lib/ngtcp2_crypto_quictls.c new file mode 100644 index 0000000000..c5bd70aefb --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_crypto_quictls.c @@ -0,0 +1,1013 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <assert.h> + +#include <ngtcp2/ngtcp2_crypto.h> +#include <ngtcp2/ngtcp2_crypto_quictls.h> + +#include <openssl/ssl.h> +#include <openssl/evp.h> +#include <openssl/kdf.h> +#include <openssl/rand.h> + +#if OPENSSL_VERSION_NUMBER >= 0x30000000L +# error #include <openssl/core_names.h> +#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L */ + +#include "ngtcp2_crypto_shared.h" + +#if OPENSSL_VERSION_NUMBER >= 0x30000000L +static int crypto_initialized; +static EVP_CIPHER *crypto_aes_128_gcm; +static EVP_CIPHER *crypto_aes_256_gcm; +static EVP_CIPHER *crypto_chacha20_poly1305; +static EVP_CIPHER *crypto_aes_128_ccm; +static EVP_CIPHER *crypto_aes_128_ctr; +static EVP_CIPHER *crypto_aes_256_ctr; +static EVP_CIPHER *crypto_chacha20; +static EVP_MD *crypto_sha256; +static EVP_MD *crypto_sha384; +static EVP_KDF *crypto_hkdf; + +int ngtcp2_crypto_quictls_init(void) { + crypto_aes_128_gcm = EVP_CIPHER_fetch(NULL, "AES-128-GCM", NULL); + if (crypto_aes_128_gcm == NULL) { + return -1; + } + + crypto_aes_256_gcm = EVP_CIPHER_fetch(NULL, "AES-256-GCM", NULL); + if (crypto_aes_256_gcm == NULL) { + return -1; + } + + crypto_chacha20_poly1305 = EVP_CIPHER_fetch(NULL, "ChaCha20-Poly1305", NULL); + if (crypto_chacha20_poly1305 == NULL) { + return -1; + } + + crypto_aes_128_ccm = EVP_CIPHER_fetch(NULL, "AES-128-CCM", NULL); + if (crypto_aes_128_ccm == NULL) { + return -1; + } + + crypto_aes_128_ctr = EVP_CIPHER_fetch(NULL, "AES-128-CTR", NULL); + if (crypto_aes_128_ctr == NULL) { + return -1; + } + + crypto_aes_256_ctr = EVP_CIPHER_fetch(NULL, "AES-256-CTR", NULL); + if (crypto_aes_256_ctr == NULL) { + return -1; + } + + crypto_chacha20 = EVP_CIPHER_fetch(NULL, "ChaCha20", NULL); + if (crypto_chacha20 == NULL) { + return -1; + } + + crypto_sha256 = EVP_MD_fetch(NULL, "sha256", NULL); + if (crypto_sha256 == NULL) { + return -1; + } + + crypto_sha384 = EVP_MD_fetch(NULL, "sha384", NULL); + if (crypto_sha384 == NULL) { + return -1; + } + + crypto_hkdf = EVP_KDF_fetch(NULL, "hkdf", NULL); + if (crypto_hkdf == NULL) { + return -1; + } + + crypto_initialized = 1; + + return 0; +} + +static const EVP_CIPHER *crypto_aead_aes_128_gcm(void) { + if (crypto_aes_128_gcm) { + return crypto_aes_128_gcm; + } + + return EVP_aes_128_gcm(); +} + +static const EVP_CIPHER *crypto_aead_aes_256_gcm(void) { + if (crypto_aes_256_gcm) { + return crypto_aes_256_gcm; + } + + return EVP_aes_256_gcm(); +} + +static const EVP_CIPHER *crypto_aead_chacha20_poly1305(void) { + if (crypto_chacha20_poly1305) { + return crypto_chacha20_poly1305; + } + + return EVP_chacha20_poly1305(); +} + +static const EVP_CIPHER *crypto_aead_aes_128_ccm(void) { + if (crypto_aes_128_ccm) { + return crypto_aes_128_ccm; + } + + return EVP_aes_128_ccm(); +} + +static const EVP_CIPHER *crypto_cipher_aes_128_ctr(void) { + if (crypto_aes_128_ctr) { + return crypto_aes_128_ctr; + } + + return EVP_aes_128_ctr(); +} + +static const EVP_CIPHER *crypto_cipher_aes_256_ctr(void) { + if (crypto_aes_256_ctr) { + return crypto_aes_256_ctr; + } + + return EVP_aes_256_ctr(); +} + +static const EVP_CIPHER *crypto_cipher_chacha20(void) { + if (crypto_chacha20) { + return crypto_chacha20; + } + + return EVP_chacha20(); +} + +static const EVP_MD *crypto_md_sha256(void) { + if (crypto_sha256) { + return crypto_sha256; + } + + return EVP_sha256(); +} + +static const EVP_MD *crypto_md_sha384(void) { + if (crypto_sha384) { + return crypto_sha384; + } + + return EVP_sha384(); +} + +static EVP_KDF *crypto_kdf_hkdf(void) { + if (crypto_hkdf) { + return crypto_hkdf; + } + + return EVP_KDF_fetch(NULL, "hkdf", NULL); +} +#else /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ +# define crypto_aead_aes_128_gcm EVP_aes_128_gcm +# define crypto_aead_aes_256_gcm EVP_aes_256_gcm +# define crypto_aead_chacha20_poly1305 EVP_chacha20_poly1305 +# define crypto_aead_aes_128_ccm EVP_aes_128_ccm +# define crypto_cipher_aes_128_ctr EVP_aes_128_ctr +# define crypto_cipher_aes_256_ctr EVP_aes_256_ctr +# define crypto_cipher_chacha20 EVP_chacha20 +# define crypto_md_sha256 EVP_sha256 +# define crypto_md_sha384 EVP_sha384 + +int ngtcp2_crypto_quictls_init(void) { return 0; } +#endif /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ + +static size_t crypto_aead_max_overhead(const EVP_CIPHER *aead) { + switch (EVP_CIPHER_nid(aead)) { + case NID_aes_128_gcm: + case NID_aes_256_gcm: + return EVP_GCM_TLS_TAG_LEN; + case NID_chacha20_poly1305: + return EVP_CHACHAPOLY_TLS_TAG_LEN; + case NID_aes_128_ccm: + return EVP_CCM_TLS_TAG_LEN; + default: + assert(0); + abort(); /* if NDEBUG is set */ + } +} + +ngtcp2_crypto_aead *ngtcp2_crypto_aead_aes_128_gcm(ngtcp2_crypto_aead *aead) { + return ngtcp2_crypto_aead_init(aead, (void *)crypto_aead_aes_128_gcm()); +} + +ngtcp2_crypto_md *ngtcp2_crypto_md_sha256(ngtcp2_crypto_md *md) { + md->native_handle = (void *)crypto_md_sha256(); + return md; +} + +ngtcp2_crypto_ctx *ngtcp2_crypto_ctx_initial(ngtcp2_crypto_ctx *ctx) { + ngtcp2_crypto_aead_init(&ctx->aead, (void *)crypto_aead_aes_128_gcm()); + ctx->md.native_handle = (void *)crypto_md_sha256(); + ctx->hp.native_handle = (void *)crypto_cipher_aes_128_ctr(); + ctx->max_encryption = 0; + ctx->max_decryption_failure = 0; + return ctx; +} + +ngtcp2_crypto_aead *ngtcp2_crypto_aead_init(ngtcp2_crypto_aead *aead, + void *aead_native_handle) { + aead->native_handle = aead_native_handle; + aead->max_overhead = crypto_aead_max_overhead(aead_native_handle); + return aead; +} + +ngtcp2_crypto_aead *ngtcp2_crypto_aead_retry(ngtcp2_crypto_aead *aead) { + return ngtcp2_crypto_aead_init(aead, (void *)crypto_aead_aes_128_gcm()); +} + +static const EVP_CIPHER *crypto_cipher_id_get_aead(uint32_t cipher_id) { + switch (cipher_id) { + case TLS1_3_CK_AES_128_GCM_SHA256: + return crypto_aead_aes_128_gcm(); + case TLS1_3_CK_AES_256_GCM_SHA384: + return crypto_aead_aes_256_gcm(); + case TLS1_3_CK_CHACHA20_POLY1305_SHA256: + return crypto_aead_chacha20_poly1305(); + case TLS1_3_CK_AES_128_CCM_SHA256: + return crypto_aead_aes_128_ccm(); + default: + return NULL; + } +} + +static uint64_t crypto_cipher_id_get_aead_max_encryption(uint32_t cipher_id) { + switch (cipher_id) { + case TLS1_3_CK_AES_128_GCM_SHA256: + case TLS1_3_CK_AES_256_GCM_SHA384: + return NGTCP2_CRYPTO_MAX_ENCRYPTION_AES_GCM; + case TLS1_3_CK_CHACHA20_POLY1305_SHA256: + return NGTCP2_CRYPTO_MAX_ENCRYPTION_CHACHA20_POLY1305; + case TLS1_3_CK_AES_128_CCM_SHA256: + return NGTCP2_CRYPTO_MAX_ENCRYPTION_AES_CCM; + default: + return 0; + } +} + +static uint64_t +crypto_cipher_id_get_aead_max_decryption_failure(uint32_t cipher_id) { + switch (cipher_id) { + case TLS1_3_CK_AES_128_GCM_SHA256: + case TLS1_3_CK_AES_256_GCM_SHA384: + return NGTCP2_CRYPTO_MAX_DECRYPTION_FAILURE_AES_GCM; + case TLS1_3_CK_CHACHA20_POLY1305_SHA256: + return NGTCP2_CRYPTO_MAX_DECRYPTION_FAILURE_CHACHA20_POLY1305; + case TLS1_3_CK_AES_128_CCM_SHA256: + return NGTCP2_CRYPTO_MAX_DECRYPTION_FAILURE_AES_CCM; + default: + return 0; + } +} + +static const EVP_CIPHER *crypto_cipher_id_get_hp(uint32_t cipher_id) { + switch (cipher_id) { + case TLS1_3_CK_AES_128_GCM_SHA256: + case TLS1_3_CK_AES_128_CCM_SHA256: + return crypto_cipher_aes_128_ctr(); + case TLS1_3_CK_AES_256_GCM_SHA384: + return crypto_cipher_aes_256_ctr(); + case TLS1_3_CK_CHACHA20_POLY1305_SHA256: + return crypto_cipher_chacha20(); + default: + return NULL; + } +} + +static const EVP_MD *crypto_cipher_id_get_md(uint32_t cipher_id) { + switch (cipher_id) { + case TLS1_3_CK_AES_128_GCM_SHA256: + case TLS1_3_CK_CHACHA20_POLY1305_SHA256: + case TLS1_3_CK_AES_128_CCM_SHA256: + return crypto_md_sha256(); + case TLS1_3_CK_AES_256_GCM_SHA384: + return crypto_md_sha384(); + default: + return NULL; + } +} + +static int supported_cipher_id(uint32_t cipher_id) { + switch (cipher_id) { + case TLS1_3_CK_AES_128_GCM_SHA256: + case TLS1_3_CK_AES_256_GCM_SHA384: + case TLS1_3_CK_CHACHA20_POLY1305_SHA256: + case TLS1_3_CK_AES_128_CCM_SHA256: + return 1; + default: + return 0; + } +} + +static ngtcp2_crypto_ctx *crypto_ctx_cipher_id(ngtcp2_crypto_ctx *ctx, + uint32_t cipher_id) { + ngtcp2_crypto_aead_init(&ctx->aead, + (void *)crypto_cipher_id_get_aead(cipher_id)); + ctx->md.native_handle = (void *)crypto_cipher_id_get_md(cipher_id); + ctx->hp.native_handle = (void *)crypto_cipher_id_get_hp(cipher_id); + ctx->max_encryption = crypto_cipher_id_get_aead_max_encryption(cipher_id); + ctx->max_decryption_failure = + crypto_cipher_id_get_aead_max_decryption_failure(cipher_id); + + return ctx; +} + +ngtcp2_crypto_ctx *ngtcp2_crypto_ctx_tls(ngtcp2_crypto_ctx *ctx, + void *tls_native_handle) { + SSL *ssl = tls_native_handle; + const SSL_CIPHER *cipher = SSL_get_current_cipher(ssl); + uint32_t cipher_id; + + if (cipher == NULL) { + return NULL; + } + + cipher_id = (uint32_t)SSL_CIPHER_get_id(cipher); + + if (!supported_cipher_id(cipher_id)) { + return NULL; + } + + return crypto_ctx_cipher_id(ctx, cipher_id); +} + +ngtcp2_crypto_ctx *ngtcp2_crypto_ctx_tls_early(ngtcp2_crypto_ctx *ctx, + void *tls_native_handle) { + return ngtcp2_crypto_ctx_tls(ctx, tls_native_handle); +} + +static size_t crypto_md_hashlen(const EVP_MD *md) { + return (size_t)EVP_MD_size(md); +} + +size_t ngtcp2_crypto_md_hashlen(const ngtcp2_crypto_md *md) { + return crypto_md_hashlen(md->native_handle); +} + +static size_t crypto_aead_keylen(const EVP_CIPHER *aead) { + return (size_t)EVP_CIPHER_key_length(aead); +} + +size_t ngtcp2_crypto_aead_keylen(const ngtcp2_crypto_aead *aead) { + return crypto_aead_keylen(aead->native_handle); +} + +static size_t crypto_aead_noncelen(const EVP_CIPHER *aead) { + return (size_t)EVP_CIPHER_iv_length(aead); +} + +size_t ngtcp2_crypto_aead_noncelen(const ngtcp2_crypto_aead *aead) { + return crypto_aead_noncelen(aead->native_handle); +} + +int ngtcp2_crypto_aead_ctx_encrypt_init(ngtcp2_crypto_aead_ctx *aead_ctx, + const ngtcp2_crypto_aead *aead, + const uint8_t *key, size_t noncelen) { + const EVP_CIPHER *cipher = aead->native_handle; + int cipher_nid = EVP_CIPHER_nid(cipher); + EVP_CIPHER_CTX *actx; + size_t taglen = crypto_aead_max_overhead(cipher); +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + OSSL_PARAM params[3]; +#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L */ + + actx = EVP_CIPHER_CTX_new(); + if (actx == NULL) { + return -1; + } + +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &noncelen); + + if (cipher_nid == NID_aes_128_ccm) { + params[1] = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG, + NULL, taglen); + params[2] = OSSL_PARAM_construct_end(); + } else { + params[1] = OSSL_PARAM_construct_end(); + } +#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L */ + + if (!EVP_EncryptInit_ex(actx, cipher, NULL, NULL, NULL) || +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + !EVP_CIPHER_CTX_set_params(actx, params) || +#else /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ + !EVP_CIPHER_CTX_ctrl(actx, EVP_CTRL_AEAD_SET_IVLEN, (int)noncelen, + NULL) || + (cipher_nid == NID_aes_128_ccm && + !EVP_CIPHER_CTX_ctrl(actx, EVP_CTRL_AEAD_SET_TAG, (int)taglen, NULL)) || +#endif /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ + !EVP_EncryptInit_ex(actx, NULL, NULL, key, NULL)) { + EVP_CIPHER_CTX_free(actx); + return -1; + } + + aead_ctx->native_handle = actx; + + return 0; +} + +int ngtcp2_crypto_aead_ctx_decrypt_init(ngtcp2_crypto_aead_ctx *aead_ctx, + const ngtcp2_crypto_aead *aead, + const uint8_t *key, size_t noncelen) { + const EVP_CIPHER *cipher = aead->native_handle; + int cipher_nid = EVP_CIPHER_nid(cipher); + EVP_CIPHER_CTX *actx; + size_t taglen = crypto_aead_max_overhead(cipher); +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + OSSL_PARAM params[3]; +#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L */ + + actx = EVP_CIPHER_CTX_new(); + if (actx == NULL) { + return -1; + } + +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &noncelen); + + if (cipher_nid == NID_aes_128_ccm) { + params[1] = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG, + NULL, taglen); + params[2] = OSSL_PARAM_construct_end(); + } else { + params[1] = OSSL_PARAM_construct_end(); + } +#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L */ + + if (!EVP_DecryptInit_ex(actx, cipher, NULL, NULL, NULL) || +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + !EVP_CIPHER_CTX_set_params(actx, params) || +#else /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ + !EVP_CIPHER_CTX_ctrl(actx, EVP_CTRL_AEAD_SET_IVLEN, (int)noncelen, + NULL) || + (cipher_nid == NID_aes_128_ccm && + !EVP_CIPHER_CTX_ctrl(actx, EVP_CTRL_AEAD_SET_TAG, (int)taglen, NULL)) || +#endif /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ + !EVP_DecryptInit_ex(actx, NULL, NULL, key, NULL)) { + EVP_CIPHER_CTX_free(actx); + return -1; + } + + aead_ctx->native_handle = actx; + + return 0; +} + +void ngtcp2_crypto_aead_ctx_free(ngtcp2_crypto_aead_ctx *aead_ctx) { + if (aead_ctx->native_handle) { + EVP_CIPHER_CTX_free(aead_ctx->native_handle); + } +} + +int ngtcp2_crypto_cipher_ctx_encrypt_init(ngtcp2_crypto_cipher_ctx *cipher_ctx, + const ngtcp2_crypto_cipher *cipher, + const uint8_t *key) { + EVP_CIPHER_CTX *actx; + + actx = EVP_CIPHER_CTX_new(); + if (actx == NULL) { + return -1; + } + + if (!EVP_EncryptInit_ex(actx, cipher->native_handle, NULL, key, NULL)) { + EVP_CIPHER_CTX_free(actx); + return -1; + } + + cipher_ctx->native_handle = actx; + + return 0; +} + +void ngtcp2_crypto_cipher_ctx_free(ngtcp2_crypto_cipher_ctx *cipher_ctx) { + if (cipher_ctx->native_handle) { + EVP_CIPHER_CTX_free(cipher_ctx->native_handle); + } +} + +int ngtcp2_crypto_hkdf_extract(uint8_t *dest, const ngtcp2_crypto_md *md, + const uint8_t *secret, size_t secretlen, + const uint8_t *salt, size_t saltlen) { +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + const EVP_MD *prf = md->native_handle; + EVP_KDF *kdf = crypto_kdf_hkdf(); + EVP_KDF_CTX *kctx = EVP_KDF_CTX_new(kdf); + int mode = EVP_KDF_HKDF_MODE_EXTRACT_ONLY; + OSSL_PARAM params[] = { + OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode), + OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST, + (char *)EVP_MD_get0_name(prf), 0), + OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_KEY, (void *)secret, + secretlen), + OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SALT, (void *)salt, + saltlen), + OSSL_PARAM_construct_end(), + }; + int rv = 0; + + if (!crypto_initialized) { + EVP_KDF_free(kdf); + } + + if (EVP_KDF_derive(kctx, dest, (size_t)EVP_MD_size(prf), params) <= 0) { + rv = -1; + } + + EVP_KDF_CTX_free(kctx); + + return rv; +#else /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ + const EVP_MD *prf = md->native_handle; + int rv = 0; + EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, NULL); + size_t destlen = (size_t)EVP_MD_size(prf); + + if (pctx == NULL) { + return -1; + } + + if (EVP_PKEY_derive_init(pctx) != 1 || + EVP_PKEY_CTX_hkdf_mode(pctx, EVP_PKEY_HKDEF_MODE_EXTRACT_ONLY) != 1 || + EVP_PKEY_CTX_set_hkdf_md(pctx, prf) != 1 || + EVP_PKEY_CTX_set1_hkdf_salt(pctx, salt, (int)saltlen) != 1 || + EVP_PKEY_CTX_set1_hkdf_key(pctx, secret, (int)secretlen) != 1 || + EVP_PKEY_derive(pctx, dest, &destlen) != 1) { + rv = -1; + } + + EVP_PKEY_CTX_free(pctx); + + return rv; +#endif /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ +} + +int ngtcp2_crypto_hkdf_expand(uint8_t *dest, size_t destlen, + const ngtcp2_crypto_md *md, const uint8_t *secret, + size_t secretlen, const uint8_t *info, + size_t infolen) { +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + const EVP_MD *prf = md->native_handle; + EVP_KDF *kdf = crypto_kdf_hkdf(); + EVP_KDF_CTX *kctx = EVP_KDF_CTX_new(kdf); + int mode = EVP_KDF_HKDF_MODE_EXPAND_ONLY; + OSSL_PARAM params[] = { + OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode), + OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST, + (char *)EVP_MD_get0_name(prf), 0), + OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_KEY, (void *)secret, + secretlen), + OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_INFO, (void *)info, + infolen), + OSSL_PARAM_construct_end(), + }; + int rv = 0; + + if (!crypto_initialized) { + EVP_KDF_free(kdf); + } + + if (EVP_KDF_derive(kctx, dest, destlen, params) <= 0) { + rv = -1; + } + + EVP_KDF_CTX_free(kctx); + + return rv; +#else /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ + const EVP_MD *prf = md->native_handle; + int rv = 0; + EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, NULL); + if (pctx == NULL) { + return -1; + } + + if (EVP_PKEY_derive_init(pctx) != 1 || + EVP_PKEY_CTX_hkdf_mode(pctx, EVP_PKEY_HKDEF_MODE_EXPAND_ONLY) != 1 || + EVP_PKEY_CTX_set_hkdf_md(pctx, prf) != 1 || + EVP_PKEY_CTX_set1_hkdf_salt(pctx, (const unsigned char *)"", 0) != 1 || + EVP_PKEY_CTX_set1_hkdf_key(pctx, secret, (int)secretlen) != 1 || + EVP_PKEY_CTX_add1_hkdf_info(pctx, info, (int)infolen) != 1 || + EVP_PKEY_derive(pctx, dest, &destlen) != 1) { + rv = -1; + } + + EVP_PKEY_CTX_free(pctx); + + return rv; +#endif /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ +} + +int ngtcp2_crypto_hkdf(uint8_t *dest, size_t destlen, + const ngtcp2_crypto_md *md, const uint8_t *secret, + size_t secretlen, const uint8_t *salt, size_t saltlen, + const uint8_t *info, size_t infolen) { +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + const EVP_MD *prf = md->native_handle; + EVP_KDF *kdf = crypto_kdf_hkdf(); + EVP_KDF_CTX *kctx = EVP_KDF_CTX_new(kdf); + OSSL_PARAM params[] = { + OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST, + (char *)EVP_MD_get0_name(prf), 0), + OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_KEY, (void *)secret, + secretlen), + OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SALT, (void *)salt, + saltlen), + OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_INFO, (void *)info, + infolen), + OSSL_PARAM_construct_end(), + }; + int rv = 0; + + if (!crypto_initialized) { + EVP_KDF_free(kdf); + } + + if (EVP_KDF_derive(kctx, dest, destlen, params) <= 0) { + rv = -1; + } + + EVP_KDF_CTX_free(kctx); + + return rv; +#else /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ + const EVP_MD *prf = md->native_handle; + int rv = 0; + EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, NULL); + if (pctx == NULL) { + return -1; + } + + if (EVP_PKEY_derive_init(pctx) != 1 || + EVP_PKEY_CTX_hkdf_mode(pctx, EVP_PKEY_HKDEF_MODE_EXTRACT_AND_EXPAND) != + 1 || + EVP_PKEY_CTX_set_hkdf_md(pctx, prf) != 1 || + EVP_PKEY_CTX_set1_hkdf_salt(pctx, salt, (int)saltlen) != 1 || + EVP_PKEY_CTX_set1_hkdf_key(pctx, secret, (int)secretlen) != 1 || + EVP_PKEY_CTX_add1_hkdf_info(pctx, info, (int)infolen) != 1 || + EVP_PKEY_derive(pctx, dest, &destlen) != 1) { + rv = -1; + } + + EVP_PKEY_CTX_free(pctx); + + return rv; +#endif /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ +} + +int ngtcp2_crypto_encrypt(uint8_t *dest, const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *plaintext, size_t plaintextlen, + const uint8_t *nonce, size_t noncelen, + const uint8_t *aad, size_t aadlen) { + const EVP_CIPHER *cipher = aead->native_handle; + size_t taglen = crypto_aead_max_overhead(cipher); + int cipher_nid = EVP_CIPHER_nid(cipher); + EVP_CIPHER_CTX *actx = aead_ctx->native_handle; + int len; +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + OSSL_PARAM params[] = { + OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG, + dest + plaintextlen, taglen), + OSSL_PARAM_construct_end(), + }; +#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L */ + + (void)noncelen; + + if (!EVP_EncryptInit_ex(actx, NULL, NULL, NULL, nonce) || + (cipher_nid == NID_aes_128_ccm && + !EVP_EncryptUpdate(actx, NULL, &len, NULL, (int)plaintextlen)) || + !EVP_EncryptUpdate(actx, NULL, &len, aad, (int)aadlen) || + !EVP_EncryptUpdate(actx, dest, &len, plaintext, (int)plaintextlen) || + !EVP_EncryptFinal_ex(actx, dest + len, &len) || +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + !EVP_CIPHER_CTX_get_params(actx, params) +#else /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ + !EVP_CIPHER_CTX_ctrl(actx, EVP_CTRL_AEAD_GET_TAG, (int)taglen, + dest + plaintextlen) +#endif /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ + ) { + return -1; + } + + return 0; +} + +int ngtcp2_crypto_decrypt(uint8_t *dest, const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *ciphertext, size_t ciphertextlen, + const uint8_t *nonce, size_t noncelen, + const uint8_t *aad, size_t aadlen) { + const EVP_CIPHER *cipher = aead->native_handle; + size_t taglen = crypto_aead_max_overhead(cipher); + int cipher_nid = EVP_CIPHER_nid(cipher); + EVP_CIPHER_CTX *actx = aead_ctx->native_handle; + int len; + const uint8_t *tag; +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + OSSL_PARAM params[2]; +#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L */ + + (void)noncelen; + + if (taglen > ciphertextlen) { + return -1; + } + + ciphertextlen -= taglen; + tag = ciphertext + ciphertextlen; + +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + params[0] = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG, + (void *)tag, taglen); + params[1] = OSSL_PARAM_construct_end(); +#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L */ + + if (!EVP_DecryptInit_ex(actx, NULL, NULL, NULL, nonce) || +#if OPENSSL_VERSION_NUMBER >= 0x30000000L + !EVP_CIPHER_CTX_set_params(actx, params) || +#else /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ + !EVP_CIPHER_CTX_ctrl(actx, EVP_CTRL_AEAD_SET_TAG, (int)taglen, + (uint8_t *)tag) || +#endif /* !(OPENSSL_VERSION_NUMBER >= 0x30000000L) */ + (cipher_nid == NID_aes_128_ccm && + !EVP_DecryptUpdate(actx, NULL, &len, NULL, (int)ciphertextlen)) || + !EVP_DecryptUpdate(actx, NULL, &len, aad, (int)aadlen) || + !EVP_DecryptUpdate(actx, dest, &len, ciphertext, (int)ciphertextlen) || + (cipher_nid != NID_aes_128_ccm && + !EVP_DecryptFinal_ex(actx, dest + ciphertextlen, &len))) { + return -1; + } + + return 0; +} + +int ngtcp2_crypto_hp_mask(uint8_t *dest, const ngtcp2_crypto_cipher *hp, + const ngtcp2_crypto_cipher_ctx *hp_ctx, + const uint8_t *sample) { + static const uint8_t PLAINTEXT[] = "\x00\x00\x00\x00\x00"; + EVP_CIPHER_CTX *actx = hp_ctx->native_handle; + int len; + + (void)hp; + + if (!EVP_EncryptInit_ex(actx, NULL, NULL, NULL, sample) || + !EVP_EncryptUpdate(actx, dest, &len, PLAINTEXT, sizeof(PLAINTEXT) - 1) || + !EVP_EncryptFinal_ex(actx, dest + sizeof(PLAINTEXT) - 1, &len)) { + return -1; + } + + return 0; +} + +int ngtcp2_crypto_read_write_crypto_data( + ngtcp2_conn *conn, ngtcp2_encryption_level encryption_level, + const uint8_t *data, size_t datalen) { + SSL *ssl = ngtcp2_conn_get_tls_native_handle(conn); + int rv; + int err; + + if (SSL_provide_quic_data( + ssl, + ngtcp2_crypto_quictls_from_ngtcp2_encryption_level(encryption_level), + data, datalen) != 1) { + return -1; + } + + if (!ngtcp2_conn_get_handshake_completed(conn)) { + rv = SSL_do_handshake(ssl); + if (rv <= 0) { + err = SSL_get_error(ssl, rv); + switch (err) { + case SSL_ERROR_WANT_READ: + case SSL_ERROR_WANT_WRITE: + return 0; + case SSL_ERROR_WANT_CLIENT_HELLO_CB: + return NGTCP2_CRYPTO_QUICTLS_ERR_TLS_WANT_CLIENT_HELLO_CB; + case SSL_ERROR_WANT_X509_LOOKUP: + return NGTCP2_CRYPTO_QUICTLS_ERR_TLS_WANT_X509_LOOKUP; + case SSL_ERROR_SSL: + return -1; + default: + return -1; + } + } + + ngtcp2_conn_tls_handshake_completed(conn); + } + + rv = SSL_process_quic_post_handshake(ssl); + if (rv != 1) { + err = SSL_get_error(ssl, rv); + switch (err) { + case SSL_ERROR_WANT_READ: + case SSL_ERROR_WANT_WRITE: + return 0; + case SSL_ERROR_SSL: + case SSL_ERROR_ZERO_RETURN: + return -1; + default: + return -1; + } + } + + return 0; +} + +int ngtcp2_crypto_set_remote_transport_params(ngtcp2_conn *conn, void *tls) { + SSL *ssl = tls; + const uint8_t *tp; + size_t tplen; + int rv; + + SSL_get_peer_quic_transport_params(ssl, &tp, &tplen); + + rv = ngtcp2_conn_decode_and_set_remote_transport_params(conn, tp, tplen); + if (rv != 0) { + ngtcp2_conn_set_tls_error(conn, rv); + return -1; + } + + return 0; +} + +int ngtcp2_crypto_set_local_transport_params(void *tls, const uint8_t *buf, + size_t len) { + if (SSL_set_quic_transport_params(tls, buf, len) != 1) { + return -1; + } + + return 0; +} + +ngtcp2_encryption_level ngtcp2_crypto_quictls_from_ossl_encryption_level( + OSSL_ENCRYPTION_LEVEL ossl_level) { + switch (ossl_level) { + case ssl_encryption_initial: + return NGTCP2_ENCRYPTION_LEVEL_INITIAL; + case ssl_encryption_early_data: + return NGTCP2_ENCRYPTION_LEVEL_0RTT; + case ssl_encryption_handshake: + return NGTCP2_ENCRYPTION_LEVEL_HANDSHAKE; + case ssl_encryption_application: + return NGTCP2_ENCRYPTION_LEVEL_1RTT; + default: + assert(0); + abort(); /* if NDEBUG is set */ + } +} + +OSSL_ENCRYPTION_LEVEL +ngtcp2_crypto_quictls_from_ngtcp2_encryption_level( + ngtcp2_encryption_level encryption_level) { + switch (encryption_level) { + case NGTCP2_ENCRYPTION_LEVEL_INITIAL: + return ssl_encryption_initial; + case NGTCP2_ENCRYPTION_LEVEL_HANDSHAKE: + return ssl_encryption_handshake; + case NGTCP2_ENCRYPTION_LEVEL_1RTT: + return ssl_encryption_application; + case NGTCP2_ENCRYPTION_LEVEL_0RTT: + return ssl_encryption_early_data; + default: + assert(0); + abort(); /* if NDEBUG is set */ + } +} + +int ngtcp2_crypto_get_path_challenge_data_cb(ngtcp2_conn *conn, uint8_t *data, + void *user_data) { + (void)conn; + (void)user_data; + + if (RAND_bytes(data, NGTCP2_PATH_CHALLENGE_DATALEN) != 1) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +int ngtcp2_crypto_random(uint8_t *data, size_t datalen) { + if (RAND_bytes(data, (int)datalen) != 1) { + return -1; + } + + return 0; +} + +static int set_encryption_secrets(SSL *ssl, OSSL_ENCRYPTION_LEVEL ossl_level, + const uint8_t *rx_secret, + const uint8_t *tx_secret, size_t secretlen) { + ngtcp2_crypto_conn_ref *conn_ref = SSL_get_app_data(ssl); + ngtcp2_conn *conn = conn_ref->get_conn(conn_ref); + ngtcp2_encryption_level level = + ngtcp2_crypto_quictls_from_ossl_encryption_level(ossl_level); + + if (rx_secret && + ngtcp2_crypto_derive_and_install_rx_key(conn, NULL, NULL, NULL, level, + rx_secret, secretlen) != 0) { + return 0; + } + + if (tx_secret && + ngtcp2_crypto_derive_and_install_tx_key(conn, NULL, NULL, NULL, level, + tx_secret, secretlen) != 0) { + return 0; + } + + return 1; +} + +static int add_handshake_data(SSL *ssl, OSSL_ENCRYPTION_LEVEL ossl_level, + const uint8_t *data, size_t datalen) { + ngtcp2_crypto_conn_ref *conn_ref = SSL_get_app_data(ssl); + ngtcp2_conn *conn = conn_ref->get_conn(conn_ref); + ngtcp2_encryption_level level = + ngtcp2_crypto_quictls_from_ossl_encryption_level(ossl_level); + int rv; + + rv = ngtcp2_conn_submit_crypto_data(conn, level, data, datalen); + if (rv != 0) { + ngtcp2_conn_set_tls_error(conn, rv); + return 0; + } + + return 1; +} + +static int flush_flight(SSL *ssl) { + (void)ssl; + return 1; +} + +static int send_alert(SSL *ssl, OSSL_ENCRYPTION_LEVEL level, uint8_t alert) { + ngtcp2_crypto_conn_ref *conn_ref = SSL_get_app_data(ssl); + ngtcp2_conn *conn = conn_ref->get_conn(conn_ref); + (void)level; + + ngtcp2_conn_set_tls_alert(conn, alert); + + return 1; +} + +static SSL_QUIC_METHOD quic_method = { + set_encryption_secrets, + add_handshake_data, + flush_flight, + send_alert, +#ifdef LIBRESSL_VERSION_NUMBER + NULL, + NULL, +#endif /* defined(LIBRESSL_VERSION_NUMBER) */ +}; + +static void crypto_quictls_configure_context(SSL_CTX *ssl_ctx) { + SSL_CTX_set_min_proto_version(ssl_ctx, TLS1_3_VERSION); + SSL_CTX_set_max_proto_version(ssl_ctx, TLS1_3_VERSION); + SSL_CTX_set_quic_method(ssl_ctx, &quic_method); +} + +int ngtcp2_crypto_quictls_configure_server_context(SSL_CTX *ssl_ctx) { + crypto_quictls_configure_context(ssl_ctx); + + return 0; +} + +int ngtcp2_crypto_quictls_configure_client_context(SSL_CTX *ssl_ctx) { + crypto_quictls_configure_context(ssl_ctx); + + return 0; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_crypto_shared.c b/contrib/libs/ngtcp2/lib/ngtcp2_crypto_shared.c new file mode 100644 index 0000000000..5befb9041a --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_crypto_shared.c @@ -0,0 +1,1450 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_crypto_shared.h" + +#ifdef WIN32 +# include <winsock2.h> +# include <ws2tcpip.h> +#elif defined(HAVE_NETINET_IN_H) +# include <netinet/in.h> +#endif /* defined(HAVE_NETINET_IN_H) */ + +#include <string.h> +#include <assert.h> + +#include "ngtcp2_macro.h" +#include "ngtcp2_net.h" + +ngtcp2_crypto_md *ngtcp2_crypto_md_init(ngtcp2_crypto_md *md, + void *md_native_handle) { + md->native_handle = md_native_handle; + return md; +} + +int ngtcp2_crypto_hkdf_expand_label(uint8_t *dest, size_t destlen, + const ngtcp2_crypto_md *md, + const uint8_t *secret, size_t secretlen, + const uint8_t *label, size_t labellen) { + static const uint8_t LABEL[] = "tls13 "; + uint8_t info[256]; + uint8_t *p = info; + + *p++ = (uint8_t)(destlen / 256); + *p++ = (uint8_t)(destlen % 256); + *p++ = (uint8_t)(sizeof(LABEL) - 1 + labellen); + memcpy(p, LABEL, sizeof(LABEL) - 1); + p += sizeof(LABEL) - 1; + memcpy(p, label, labellen); + p += labellen; + *p++ = 0; + + return ngtcp2_crypto_hkdf_expand(dest, destlen, md, secret, secretlen, info, + (size_t)(p - info)); +} + +int ngtcp2_crypto_derive_initial_secrets(uint8_t *rx_secret, uint8_t *tx_secret, + uint8_t *initial_secret, + uint32_t version, + const ngtcp2_cid *client_dcid, + ngtcp2_crypto_side side) { + static const uint8_t CLABEL[] = "client in"; + static const uint8_t SLABEL[] = "server in"; + uint8_t initial_secret_buf[NGTCP2_CRYPTO_INITIAL_SECRETLEN]; + uint8_t *client_secret; + uint8_t *server_secret; + ngtcp2_crypto_ctx ctx; + const uint8_t *salt; + size_t saltlen; + + if (!initial_secret) { + initial_secret = initial_secret_buf; + } + + ngtcp2_crypto_ctx_initial(&ctx); + + switch (version) { + case NGTCP2_PROTO_VER_V1: + default: + salt = (const uint8_t *)NGTCP2_INITIAL_SALT_V1; + saltlen = sizeof(NGTCP2_INITIAL_SALT_V1) - 1; + break; + case NGTCP2_PROTO_VER_V2: + salt = (const uint8_t *)NGTCP2_INITIAL_SALT_V2; + saltlen = sizeof(NGTCP2_INITIAL_SALT_V2) - 1; + break; + } + + if (ngtcp2_crypto_hkdf_extract(initial_secret, &ctx.md, client_dcid->data, + client_dcid->datalen, salt, saltlen) != 0) { + return -1; + } + + if (side == NGTCP2_CRYPTO_SIDE_SERVER) { + client_secret = rx_secret; + server_secret = tx_secret; + } else { + client_secret = tx_secret; + server_secret = rx_secret; + } + + if (ngtcp2_crypto_hkdf_expand_label( + client_secret, NGTCP2_CRYPTO_INITIAL_SECRETLEN, &ctx.md, initial_secret, + NGTCP2_CRYPTO_INITIAL_SECRETLEN, CLABEL, sizeof(CLABEL) - 1) != 0 || + ngtcp2_crypto_hkdf_expand_label( + server_secret, NGTCP2_CRYPTO_INITIAL_SECRETLEN, &ctx.md, initial_secret, + NGTCP2_CRYPTO_INITIAL_SECRETLEN, SLABEL, sizeof(SLABEL) - 1) != 0) { + return -1; + } + + return 0; +} + +size_t ngtcp2_crypto_packet_protection_ivlen(const ngtcp2_crypto_aead *aead) { + size_t noncelen = ngtcp2_crypto_aead_noncelen(aead); + return ngtcp2_max_size(8, noncelen); +} + +int ngtcp2_crypto_derive_packet_protection_key( + uint8_t *key, uint8_t *iv, uint8_t *hp_key, uint32_t version, + const ngtcp2_crypto_aead *aead, const ngtcp2_crypto_md *md, + const uint8_t *secret, size_t secretlen) { + static const uint8_t KEY_LABEL_V1[] = "quic key"; + static const uint8_t IV_LABEL_V1[] = "quic iv"; + static const uint8_t HP_KEY_LABEL_V1[] = "quic hp"; + static const uint8_t KEY_LABEL_V2[] = "quicv2 key"; + static const uint8_t IV_LABEL_V2[] = "quicv2 iv"; + static const uint8_t HP_KEY_LABEL_V2[] = "quicv2 hp"; + size_t keylen = ngtcp2_crypto_aead_keylen(aead); + size_t ivlen = ngtcp2_crypto_packet_protection_ivlen(aead); + const uint8_t *key_label; + size_t key_labellen; + const uint8_t *iv_label; + size_t iv_labellen; + const uint8_t *hp_key_label; + size_t hp_key_labellen; + + switch (version) { + case NGTCP2_PROTO_VER_V2: + key_label = KEY_LABEL_V2; + key_labellen = sizeof(KEY_LABEL_V2) - 1; + iv_label = IV_LABEL_V2; + iv_labellen = sizeof(IV_LABEL_V2) - 1; + hp_key_label = HP_KEY_LABEL_V2; + hp_key_labellen = sizeof(HP_KEY_LABEL_V2) - 1; + break; + default: + key_label = KEY_LABEL_V1; + key_labellen = sizeof(KEY_LABEL_V1) - 1; + iv_label = IV_LABEL_V1; + iv_labellen = sizeof(IV_LABEL_V1) - 1; + hp_key_label = HP_KEY_LABEL_V1; + hp_key_labellen = sizeof(HP_KEY_LABEL_V1) - 1; + } + + if (ngtcp2_crypto_hkdf_expand_label(key, keylen, md, secret, secretlen, + key_label, key_labellen) != 0) { + return -1; + } + + if (ngtcp2_crypto_hkdf_expand_label(iv, ivlen, md, secret, secretlen, + iv_label, iv_labellen) != 0) { + return -1; + } + + if (hp_key != NULL && + ngtcp2_crypto_hkdf_expand_label(hp_key, keylen, md, secret, secretlen, + hp_key_label, hp_key_labellen) != 0) { + return -1; + } + + return 0; +} + +int ngtcp2_crypto_update_traffic_secret(uint8_t *dest, uint32_t version, + const ngtcp2_crypto_md *md, + const uint8_t *secret, + size_t secretlen) { + static const uint8_t LABEL[] = "quic ku"; + static const uint8_t LABEL_V2[] = "quicv2 ku"; + const uint8_t *label; + size_t labellen; + + switch (version) { + case NGTCP2_PROTO_VER_V2: + label = LABEL_V2; + labellen = sizeof(LABEL_V2) - 1; + break; + default: + label = LABEL; + labellen = sizeof(LABEL) - 1; + } + + if (ngtcp2_crypto_hkdf_expand_label(dest, secretlen, md, secret, secretlen, + label, labellen) != 0) { + return -1; + } + + return 0; +} + +int ngtcp2_crypto_derive_and_install_rx_key(ngtcp2_conn *conn, uint8_t *key, + uint8_t *iv, uint8_t *hp_key, + ngtcp2_encryption_level level, + const uint8_t *secret, + size_t secretlen) { + const ngtcp2_crypto_ctx *ctx; + const ngtcp2_crypto_aead *aead; + const ngtcp2_crypto_md *md; + const ngtcp2_crypto_cipher *hp; + ngtcp2_crypto_aead_ctx aead_ctx = {0}; + ngtcp2_crypto_cipher_ctx hp_ctx = {0}; + void *tls = ngtcp2_conn_get_tls_native_handle(conn); + uint8_t keybuf[64], ivbuf[64], hp_keybuf[64]; + size_t ivlen; + int rv; + ngtcp2_crypto_ctx cctx; + uint32_t version; + + if (level == NGTCP2_ENCRYPTION_LEVEL_0RTT && !ngtcp2_conn_is_server(conn)) { + return 0; + } + + if (!key) { + key = keybuf; + } + if (!iv) { + iv = ivbuf; + } + if (!hp_key) { + hp_key = hp_keybuf; + } + + switch (level) { + case NGTCP2_ENCRYPTION_LEVEL_0RTT: + if (ngtcp2_crypto_ctx_tls_early(&cctx, tls) == NULL) { + return -1; + } + + ngtcp2_conn_set_0rtt_crypto_ctx(conn, &cctx); + ctx = ngtcp2_conn_get_0rtt_crypto_ctx(conn); + version = ngtcp2_conn_get_client_chosen_version(conn); + break; + case NGTCP2_ENCRYPTION_LEVEL_HANDSHAKE: + if (ngtcp2_conn_is_server(conn) && + !ngtcp2_conn_get_negotiated_version(conn)) { + rv = ngtcp2_crypto_set_remote_transport_params(conn, tls); + if (rv != 0) { + return -1; + } + } + /* fall through */ + case NGTCP2_ENCRYPTION_LEVEL_1RTT: + ctx = ngtcp2_conn_get_crypto_ctx(conn); + version = ngtcp2_conn_get_negotiated_version(conn); + + if (!ctx->aead.native_handle) { + if (ngtcp2_crypto_ctx_tls(&cctx, tls) == NULL) { + return -1; + } + + ngtcp2_conn_set_crypto_ctx(conn, &cctx); + ctx = ngtcp2_conn_get_crypto_ctx(conn); + } + break; + default: + return -1; + } + + aead = &ctx->aead; + md = &ctx->md; + hp = &ctx->hp; + ivlen = ngtcp2_crypto_packet_protection_ivlen(aead); + + if (ngtcp2_crypto_derive_packet_protection_key(key, iv, hp_key, version, aead, + md, secret, secretlen) != 0) { + return -1; + } + + if (ngtcp2_crypto_aead_ctx_decrypt_init(&aead_ctx, aead, key, ivlen) != 0) { + goto fail; + } + + if (ngtcp2_crypto_cipher_ctx_encrypt_init(&hp_ctx, hp, hp_key) != 0) { + goto fail; + } + + switch (level) { + case NGTCP2_ENCRYPTION_LEVEL_0RTT: + rv = ngtcp2_conn_install_0rtt_key(conn, &aead_ctx, iv, ivlen, &hp_ctx); + if (rv != 0) { + goto fail; + } + break; + case NGTCP2_ENCRYPTION_LEVEL_HANDSHAKE: + rv = + ngtcp2_conn_install_rx_handshake_key(conn, &aead_ctx, iv, ivlen, &hp_ctx); + if (rv != 0) { + goto fail; + } + break; + case NGTCP2_ENCRYPTION_LEVEL_1RTT: + if (!ngtcp2_conn_is_server(conn)) { + rv = ngtcp2_crypto_set_remote_transport_params(conn, tls); + if (rv != 0) { + goto fail; + } + } + + rv = ngtcp2_conn_install_rx_key(conn, secret, secretlen, &aead_ctx, iv, + ivlen, &hp_ctx); + if (rv != 0) { + goto fail; + } + + break; + default: + goto fail; + } + + return 0; + +fail: + ngtcp2_crypto_cipher_ctx_free(&hp_ctx); + ngtcp2_crypto_aead_ctx_free(&aead_ctx); + + return -1; +} + +/* + * crypto_set_local_transport_params gets local QUIC transport + * parameters from |conn| and sets it to |tls|. + * + * This function returns 0 if it succeeds, or -1. + */ +static int crypto_set_local_transport_params(ngtcp2_conn *conn, void *tls) { + ngtcp2_ssize nwrite; + uint8_t buf[256]; + + nwrite = ngtcp2_conn_encode_local_transport_params(conn, buf, sizeof(buf)); + if (nwrite < 0) { + return -1; + } + + if (ngtcp2_crypto_set_local_transport_params(tls, buf, (size_t)nwrite) != 0) { + return -1; + } + + return 0; +} + +int ngtcp2_crypto_derive_and_install_tx_key(ngtcp2_conn *conn, uint8_t *key, + uint8_t *iv, uint8_t *hp_key, + ngtcp2_encryption_level level, + const uint8_t *secret, + size_t secretlen) { + const ngtcp2_crypto_ctx *ctx; + const ngtcp2_crypto_aead *aead; + const ngtcp2_crypto_md *md; + const ngtcp2_crypto_cipher *hp; + ngtcp2_crypto_aead_ctx aead_ctx = {0}; + ngtcp2_crypto_cipher_ctx hp_ctx = {0}; + void *tls = ngtcp2_conn_get_tls_native_handle(conn); + uint8_t keybuf[64], ivbuf[64], hp_keybuf[64]; + size_t ivlen; + int rv; + ngtcp2_crypto_ctx cctx; + uint32_t version; + + if (level == NGTCP2_ENCRYPTION_LEVEL_0RTT && ngtcp2_conn_is_server(conn)) { + return 0; + } + + if (!key) { + key = keybuf; + } + if (!iv) { + iv = ivbuf; + } + if (!hp_key) { + hp_key = hp_keybuf; + } + + switch (level) { + case NGTCP2_ENCRYPTION_LEVEL_0RTT: + if (ngtcp2_crypto_ctx_tls_early(&cctx, tls) == NULL) { + return -1; + } + + ngtcp2_conn_set_0rtt_crypto_ctx(conn, &cctx); + ctx = ngtcp2_conn_get_0rtt_crypto_ctx(conn); + version = ngtcp2_conn_get_client_chosen_version(conn); + break; + case NGTCP2_ENCRYPTION_LEVEL_HANDSHAKE: + if (ngtcp2_conn_is_server(conn) && + !ngtcp2_conn_get_negotiated_version(conn)) { + rv = ngtcp2_crypto_set_remote_transport_params(conn, tls); + if (rv != 0) { + return -1; + } + } + /* fall through */ + case NGTCP2_ENCRYPTION_LEVEL_1RTT: + ctx = ngtcp2_conn_get_crypto_ctx(conn); + version = ngtcp2_conn_get_negotiated_version(conn); + + if (!ctx->aead.native_handle) { + if (ngtcp2_crypto_ctx_tls(&cctx, tls) == NULL) { + return -1; + } + + ngtcp2_conn_set_crypto_ctx(conn, &cctx); + ctx = ngtcp2_conn_get_crypto_ctx(conn); + } + break; + default: + return -1; + } + + aead = &ctx->aead; + md = &ctx->md; + hp = &ctx->hp; + ivlen = ngtcp2_crypto_packet_protection_ivlen(aead); + + if (ngtcp2_crypto_derive_packet_protection_key(key, iv, hp_key, version, aead, + md, secret, secretlen) != 0) { + return -1; + } + + if (ngtcp2_crypto_aead_ctx_encrypt_init(&aead_ctx, aead, key, ivlen) != 0) { + goto fail; + } + + if (ngtcp2_crypto_cipher_ctx_encrypt_init(&hp_ctx, hp, hp_key) != 0) { + goto fail; + } + + switch (level) { + case NGTCP2_ENCRYPTION_LEVEL_0RTT: + rv = ngtcp2_conn_install_0rtt_key(conn, &aead_ctx, iv, ivlen, &hp_ctx); + if (rv != 0) { + goto fail; + } + break; + case NGTCP2_ENCRYPTION_LEVEL_HANDSHAKE: + rv = + ngtcp2_conn_install_tx_handshake_key(conn, &aead_ctx, iv, ivlen, &hp_ctx); + if (rv != 0) { + goto fail; + } + + if (ngtcp2_conn_is_server(conn) && + crypto_set_local_transport_params(conn, tls) != 0) { + goto fail; + } + + break; + case NGTCP2_ENCRYPTION_LEVEL_1RTT: + rv = ngtcp2_conn_install_tx_key(conn, secret, secretlen, &aead_ctx, iv, + ivlen, &hp_ctx); + if (rv != 0) { + goto fail; + } + + break; + default: + goto fail; + } + + return 0; + +fail: + ngtcp2_crypto_cipher_ctx_free(&hp_ctx); + ngtcp2_crypto_aead_ctx_free(&aead_ctx); + + return -1; +} + +int ngtcp2_crypto_derive_and_install_initial_key( + ngtcp2_conn *conn, uint8_t *rx_secret, uint8_t *tx_secret, + uint8_t *initial_secret, uint8_t *rx_key, uint8_t *rx_iv, uint8_t *rx_hp_key, + uint8_t *tx_key, uint8_t *tx_iv, uint8_t *tx_hp_key, uint32_t version, + const ngtcp2_cid *client_dcid) { + uint8_t rx_secretbuf[NGTCP2_CRYPTO_INITIAL_SECRETLEN]; + uint8_t tx_secretbuf[NGTCP2_CRYPTO_INITIAL_SECRETLEN]; + uint8_t initial_secretbuf[NGTCP2_CRYPTO_INITIAL_SECRETLEN]; + uint8_t rx_keybuf[NGTCP2_CRYPTO_INITIAL_KEYLEN]; + uint8_t rx_ivbuf[NGTCP2_CRYPTO_INITIAL_IVLEN]; + uint8_t rx_hp_keybuf[NGTCP2_CRYPTO_INITIAL_KEYLEN]; + uint8_t tx_keybuf[NGTCP2_CRYPTO_INITIAL_KEYLEN]; + uint8_t tx_ivbuf[NGTCP2_CRYPTO_INITIAL_IVLEN]; + uint8_t tx_hp_keybuf[NGTCP2_CRYPTO_INITIAL_KEYLEN]; + ngtcp2_crypto_ctx ctx; + ngtcp2_crypto_aead retry_aead; + ngtcp2_crypto_aead_ctx rx_aead_ctx = {0}; + ngtcp2_crypto_cipher_ctx rx_hp_ctx = {0}; + ngtcp2_crypto_aead_ctx tx_aead_ctx = {0}; + ngtcp2_crypto_cipher_ctx tx_hp_ctx = {0}; + ngtcp2_crypto_aead_ctx retry_aead_ctx = {0}; + int rv; + int server = ngtcp2_conn_is_server(conn); + const uint8_t *retry_key; + size_t retry_noncelen; + + ngtcp2_crypto_ctx_initial(&ctx); + + if (!rx_secret) { + rx_secret = rx_secretbuf; + } + if (!tx_secret) { + tx_secret = tx_secretbuf; + } + if (!initial_secret) { + initial_secret = initial_secretbuf; + } + + if (!rx_key) { + rx_key = rx_keybuf; + } + if (!rx_iv) { + rx_iv = rx_ivbuf; + } + if (!rx_hp_key) { + rx_hp_key = rx_hp_keybuf; + } + if (!tx_key) { + tx_key = tx_keybuf; + } + if (!tx_iv) { + tx_iv = tx_ivbuf; + } + if (!tx_hp_key) { + tx_hp_key = tx_hp_keybuf; + } + + ngtcp2_conn_set_initial_crypto_ctx(conn, &ctx); + + if (ngtcp2_crypto_derive_initial_secrets( + rx_secret, tx_secret, initial_secret, version, client_dcid, + server ? NGTCP2_CRYPTO_SIDE_SERVER : NGTCP2_CRYPTO_SIDE_CLIENT) != 0) { + return -1; + } + + if (ngtcp2_crypto_derive_packet_protection_key( + rx_key, rx_iv, rx_hp_key, version, &ctx.aead, &ctx.md, rx_secret, + NGTCP2_CRYPTO_INITIAL_SECRETLEN) != 0) { + return -1; + } + + if (ngtcp2_crypto_derive_packet_protection_key( + tx_key, tx_iv, tx_hp_key, version, &ctx.aead, &ctx.md, tx_secret, + NGTCP2_CRYPTO_INITIAL_SECRETLEN) != 0) { + return -1; + } + + if (ngtcp2_crypto_aead_ctx_decrypt_init(&rx_aead_ctx, &ctx.aead, rx_key, + NGTCP2_CRYPTO_INITIAL_IVLEN) != 0) { + goto fail; + } + + if (ngtcp2_crypto_cipher_ctx_encrypt_init(&rx_hp_ctx, &ctx.hp, rx_hp_key) != + 0) { + goto fail; + } + + if (ngtcp2_crypto_aead_ctx_encrypt_init(&tx_aead_ctx, &ctx.aead, tx_key, + NGTCP2_CRYPTO_INITIAL_IVLEN) != 0) { + goto fail; + } + + if (ngtcp2_crypto_cipher_ctx_encrypt_init(&tx_hp_ctx, &ctx.hp, tx_hp_key) != + 0) { + goto fail; + } + + if (!server && !ngtcp2_conn_after_retry(conn)) { + ngtcp2_crypto_aead_retry(&retry_aead); + + switch (version) { + case NGTCP2_PROTO_VER_V1: + default: + retry_key = (const uint8_t *)NGTCP2_RETRY_KEY_V1; + retry_noncelen = sizeof(NGTCP2_RETRY_NONCE_V1) - 1; + break; + case NGTCP2_PROTO_VER_V2: + retry_key = (const uint8_t *)NGTCP2_RETRY_KEY_V2; + retry_noncelen = sizeof(NGTCP2_RETRY_NONCE_V2) - 1; + break; + } + + if (ngtcp2_crypto_aead_ctx_encrypt_init(&retry_aead_ctx, &retry_aead, + retry_key, retry_noncelen) != 0) { + goto fail; + } + } + + rv = ngtcp2_conn_install_initial_key(conn, &rx_aead_ctx, rx_iv, &rx_hp_ctx, + &tx_aead_ctx, tx_iv, &tx_hp_ctx, + NGTCP2_CRYPTO_INITIAL_IVLEN); + if (rv != 0) { + goto fail; + } + + if (retry_aead_ctx.native_handle) { + ngtcp2_conn_set_retry_aead(conn, &retry_aead, &retry_aead_ctx); + } + + return 0; + +fail: + ngtcp2_crypto_aead_ctx_free(&retry_aead_ctx); + ngtcp2_crypto_cipher_ctx_free(&tx_hp_ctx); + ngtcp2_crypto_aead_ctx_free(&tx_aead_ctx); + ngtcp2_crypto_cipher_ctx_free(&rx_hp_ctx); + ngtcp2_crypto_aead_ctx_free(&rx_aead_ctx); + + return -1; +} + +int ngtcp2_crypto_derive_and_install_vneg_initial_key( + ngtcp2_conn *conn, uint8_t *rx_secret, uint8_t *tx_secret, + uint8_t *initial_secret, uint8_t *rx_key, uint8_t *rx_iv, uint8_t *rx_hp_key, + uint8_t *tx_key, uint8_t *tx_iv, uint8_t *tx_hp_key, uint32_t version, + const ngtcp2_cid *client_dcid) { + uint8_t rx_secretbuf[NGTCP2_CRYPTO_INITIAL_SECRETLEN]; + uint8_t tx_secretbuf[NGTCP2_CRYPTO_INITIAL_SECRETLEN]; + uint8_t initial_secretbuf[NGTCP2_CRYPTO_INITIAL_SECRETLEN]; + uint8_t rx_keybuf[NGTCP2_CRYPTO_INITIAL_KEYLEN]; + uint8_t rx_ivbuf[NGTCP2_CRYPTO_INITIAL_IVLEN]; + uint8_t rx_hp_keybuf[NGTCP2_CRYPTO_INITIAL_KEYLEN]; + uint8_t tx_keybuf[NGTCP2_CRYPTO_INITIAL_KEYLEN]; + uint8_t tx_ivbuf[NGTCP2_CRYPTO_INITIAL_IVLEN]; + uint8_t tx_hp_keybuf[NGTCP2_CRYPTO_INITIAL_KEYLEN]; + const ngtcp2_crypto_ctx *ctx = ngtcp2_conn_get_initial_crypto_ctx(conn); + ngtcp2_crypto_aead_ctx rx_aead_ctx = {0}; + ngtcp2_crypto_cipher_ctx rx_hp_ctx = {0}; + ngtcp2_crypto_aead_ctx tx_aead_ctx = {0}; + ngtcp2_crypto_cipher_ctx tx_hp_ctx = {0}; + int rv; + int server = ngtcp2_conn_is_server(conn); + + if (!rx_secret) { + rx_secret = rx_secretbuf; + } + if (!tx_secret) { + tx_secret = tx_secretbuf; + } + if (!initial_secret) { + initial_secret = initial_secretbuf; + } + + if (!rx_key) { + rx_key = rx_keybuf; + } + if (!rx_iv) { + rx_iv = rx_ivbuf; + } + if (!rx_hp_key) { + rx_hp_key = rx_hp_keybuf; + } + if (!tx_key) { + tx_key = tx_keybuf; + } + if (!tx_iv) { + tx_iv = tx_ivbuf; + } + if (!tx_hp_key) { + tx_hp_key = tx_hp_keybuf; + } + + if (ngtcp2_crypto_derive_initial_secrets( + rx_secret, tx_secret, initial_secret, version, client_dcid, + server ? NGTCP2_CRYPTO_SIDE_SERVER : NGTCP2_CRYPTO_SIDE_CLIENT) != 0) { + return -1; + } + + if (ngtcp2_crypto_derive_packet_protection_key( + rx_key, rx_iv, rx_hp_key, version, &ctx->aead, &ctx->md, rx_secret, + NGTCP2_CRYPTO_INITIAL_SECRETLEN) != 0) { + return -1; + } + + if (ngtcp2_crypto_derive_packet_protection_key( + tx_key, tx_iv, tx_hp_key, version, &ctx->aead, &ctx->md, tx_secret, + NGTCP2_CRYPTO_INITIAL_SECRETLEN) != 0) { + return -1; + } + + if (ngtcp2_crypto_aead_ctx_decrypt_init(&rx_aead_ctx, &ctx->aead, rx_key, + NGTCP2_CRYPTO_INITIAL_IVLEN) != 0) { + goto fail; + } + + if (ngtcp2_crypto_cipher_ctx_encrypt_init(&rx_hp_ctx, &ctx->hp, rx_hp_key) != + 0) { + goto fail; + } + + if (ngtcp2_crypto_aead_ctx_encrypt_init(&tx_aead_ctx, &ctx->aead, tx_key, + NGTCP2_CRYPTO_INITIAL_IVLEN) != 0) { + goto fail; + } + + if (ngtcp2_crypto_cipher_ctx_encrypt_init(&tx_hp_ctx, &ctx->hp, tx_hp_key) != + 0) { + goto fail; + } + + rv = ngtcp2_conn_install_vneg_initial_key( + conn, version, &rx_aead_ctx, rx_iv, &rx_hp_ctx, &tx_aead_ctx, tx_iv, + &tx_hp_ctx, NGTCP2_CRYPTO_INITIAL_IVLEN); + if (rv != 0) { + goto fail; + } + + return 0; + +fail: + ngtcp2_crypto_cipher_ctx_free(&tx_hp_ctx); + ngtcp2_crypto_aead_ctx_free(&tx_aead_ctx); + ngtcp2_crypto_cipher_ctx_free(&rx_hp_ctx); + ngtcp2_crypto_aead_ctx_free(&rx_aead_ctx); + + return -1; +} + +int ngtcp2_crypto_update_key( + ngtcp2_conn *conn, uint8_t *rx_secret, uint8_t *tx_secret, + ngtcp2_crypto_aead_ctx *rx_aead_ctx, uint8_t *rx_key, uint8_t *rx_iv, + ngtcp2_crypto_aead_ctx *tx_aead_ctx, uint8_t *tx_key, uint8_t *tx_iv, + const uint8_t *current_rx_secret, const uint8_t *current_tx_secret, + size_t secretlen) { + const ngtcp2_crypto_ctx *ctx = ngtcp2_conn_get_crypto_ctx(conn); + const ngtcp2_crypto_aead *aead = &ctx->aead; + const ngtcp2_crypto_md *md = &ctx->md; + size_t ivlen = ngtcp2_crypto_packet_protection_ivlen(aead); + uint32_t version = ngtcp2_conn_get_negotiated_version(conn); + + if (ngtcp2_crypto_update_traffic_secret(rx_secret, version, md, + current_rx_secret, secretlen) != 0) { + return -1; + } + + if (ngtcp2_crypto_derive_packet_protection_key( + rx_key, rx_iv, NULL, version, aead, md, rx_secret, secretlen) != 0) { + return -1; + } + + if (ngtcp2_crypto_update_traffic_secret(tx_secret, version, md, + current_tx_secret, secretlen) != 0) { + return -1; + } + + if (ngtcp2_crypto_derive_packet_protection_key( + tx_key, tx_iv, NULL, version, aead, md, tx_secret, secretlen) != 0) { + return -1; + } + + if (ngtcp2_crypto_aead_ctx_decrypt_init(rx_aead_ctx, aead, rx_key, ivlen) != + 0) { + return -1; + } + + if (ngtcp2_crypto_aead_ctx_encrypt_init(tx_aead_ctx, aead, tx_key, ivlen) != + 0) { + ngtcp2_crypto_aead_ctx_free(rx_aead_ctx); + rx_aead_ctx->native_handle = NULL; + return -1; + } + + return 0; +} + +int ngtcp2_crypto_encrypt_cb(uint8_t *dest, const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *plaintext, size_t plaintextlen, + const uint8_t *nonce, size_t noncelen, + const uint8_t *aad, size_t aadlen) { + if (ngtcp2_crypto_encrypt(dest, aead, aead_ctx, plaintext, plaintextlen, + nonce, noncelen, aad, aadlen) != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + return 0; +} + +int ngtcp2_crypto_decrypt_cb(uint8_t *dest, const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx, + const uint8_t *ciphertext, size_t ciphertextlen, + const uint8_t *nonce, size_t noncelen, + const uint8_t *aad, size_t aadlen) { + if (ngtcp2_crypto_decrypt(dest, aead, aead_ctx, ciphertext, ciphertextlen, + nonce, noncelen, aad, aadlen) != 0) { + return NGTCP2_ERR_DECRYPT; + } + return 0; +} + +int ngtcp2_crypto_hp_mask_cb(uint8_t *dest, const ngtcp2_crypto_cipher *hp, + const ngtcp2_crypto_cipher_ctx *hp_ctx, + const uint8_t *sample) { + if (ngtcp2_crypto_hp_mask(dest, hp, hp_ctx, sample) != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + return 0; +} + +int ngtcp2_crypto_update_key_cb( + ngtcp2_conn *conn, uint8_t *rx_secret, uint8_t *tx_secret, + ngtcp2_crypto_aead_ctx *rx_aead_ctx, uint8_t *rx_iv, + ngtcp2_crypto_aead_ctx *tx_aead_ctx, uint8_t *tx_iv, + const uint8_t *current_rx_secret, const uint8_t *current_tx_secret, + size_t secretlen, void *user_data) { + uint8_t rx_key[64]; + uint8_t tx_key[64]; + (void)conn; + (void)user_data; + + if (ngtcp2_crypto_update_key( + conn, rx_secret, tx_secret, rx_aead_ctx, rx_key, rx_iv, tx_aead_ctx, + tx_key, tx_iv, current_rx_secret, current_tx_secret, secretlen) != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + return 0; +} + +int ngtcp2_crypto_generate_stateless_reset_token(uint8_t *token, + const uint8_t *secret, + size_t secretlen, + const ngtcp2_cid *cid) { + static const uint8_t info[] = "stateless_reset"; + ngtcp2_crypto_md md; + + if (ngtcp2_crypto_hkdf(token, NGTCP2_STATELESS_RESET_TOKENLEN, + ngtcp2_crypto_md_sha256(&md), secret, secretlen, + cid->data, cid->datalen, info, + sizeof(info) - 1) != 0) { + return -1; + } + + return 0; +} + +static int crypto_derive_token_key(uint8_t *key, size_t keylen, uint8_t *iv, + size_t ivlen, const ngtcp2_crypto_md *md, + const uint8_t *secret, size_t secretlen, + const uint8_t *salt, size_t saltlen, + const uint8_t *info_prefix, + size_t info_prefixlen) { + static const uint8_t key_info_suffix[] = " key"; + static const uint8_t iv_info_suffix[] = " iv"; + uint8_t intsecret[32]; + uint8_t info[32]; + uint8_t *p; + + assert(ngtcp2_crypto_md_hashlen(md) == sizeof(intsecret)); + assert(info_prefixlen + sizeof(key_info_suffix) - 1 <= sizeof(info)); + assert(info_prefixlen + sizeof(iv_info_suffix) - 1 <= sizeof(info)); + + if (ngtcp2_crypto_hkdf_extract(intsecret, md, secret, secretlen, salt, + saltlen) != 0) { + return -1; + } + + memcpy(info, info_prefix, info_prefixlen); + p = info + info_prefixlen; + + memcpy(p, key_info_suffix, sizeof(key_info_suffix) - 1); + p += sizeof(key_info_suffix) - 1; + + if (ngtcp2_crypto_hkdf_expand(key, keylen, md, intsecret, sizeof(intsecret), + info, (size_t)(p - info)) != 0) { + return -1; + } + + p = info + info_prefixlen; + + memcpy(p, iv_info_suffix, sizeof(iv_info_suffix) - 1); + p += sizeof(iv_info_suffix) - 1; + + if (ngtcp2_crypto_hkdf_expand(iv, ivlen, md, intsecret, sizeof(intsecret), + info, (size_t)(p - info)) != 0) { + return -1; + } + + return 0; +} + +static size_t crypto_generate_retry_token_aad(uint8_t *dest, uint32_t version, + const ngtcp2_sockaddr *sa, + ngtcp2_socklen salen, + const ngtcp2_cid *retry_scid) { + uint8_t *p = dest; + + version = ngtcp2_htonl(version); + memcpy(p, &version, sizeof(version)); + p += sizeof(version); + memcpy(p, sa, (size_t)salen); + p += salen; + memcpy(p, retry_scid->data, retry_scid->datalen); + p += retry_scid->datalen; + + return (size_t)(p - dest); +} + +static const uint8_t retry_token_info_prefix[] = "retry_token"; + +ngtcp2_ssize ngtcp2_crypto_generate_retry_token( + uint8_t *token, const uint8_t *secret, size_t secretlen, uint32_t version, + const ngtcp2_sockaddr *remote_addr, ngtcp2_socklen remote_addrlen, + const ngtcp2_cid *retry_scid, const ngtcp2_cid *odcid, ngtcp2_tstamp ts) { + uint8_t + plaintext[/* cid len = */ 1 + NGTCP2_MAX_CIDLEN + sizeof(ngtcp2_tstamp)]; + uint8_t rand_data[NGTCP2_CRYPTO_TOKEN_RAND_DATALEN]; + uint8_t key[16]; + uint8_t iv[12]; + size_t keylen; + size_t ivlen; + ngtcp2_crypto_aead aead; + ngtcp2_crypto_md md; + ngtcp2_crypto_aead_ctx aead_ctx; + size_t plaintextlen; + uint8_t + aad[sizeof(version) + sizeof(ngtcp2_sockaddr_union) + NGTCP2_MAX_CIDLEN]; + size_t aadlen; + uint8_t *p = plaintext; + ngtcp2_tstamp ts_be = ngtcp2_htonl64(ts); + int rv; + + assert((size_t)remote_addrlen <= sizeof(ngtcp2_sockaddr_union)); + + memset(plaintext, 0, sizeof(plaintext)); + + *p++ = (uint8_t)odcid->datalen; + memcpy(p, odcid->data, odcid->datalen); + p += NGTCP2_MAX_CIDLEN; + memcpy(p, &ts_be, sizeof(ts_be)); + p += sizeof(ts_be); + + plaintextlen = (size_t)(p - plaintext); + + if (ngtcp2_crypto_random(rand_data, sizeof(rand_data)) != 0) { + return -1; + } + + ngtcp2_crypto_aead_aes_128_gcm(&aead); + ngtcp2_crypto_md_sha256(&md); + + keylen = ngtcp2_crypto_aead_keylen(&aead); + ivlen = ngtcp2_crypto_aead_noncelen(&aead); + + assert(sizeof(key) == keylen); + assert(sizeof(iv) == ivlen); + + if (crypto_derive_token_key(key, keylen, iv, ivlen, &md, secret, secretlen, + rand_data, sizeof(rand_data), + retry_token_info_prefix, + sizeof(retry_token_info_prefix) - 1) != 0) { + return -1; + } + + aadlen = crypto_generate_retry_token_aad(aad, version, remote_addr, + remote_addrlen, retry_scid); + + p = token; + *p++ = NGTCP2_CRYPTO_TOKEN_MAGIC_RETRY; + + if (ngtcp2_crypto_aead_ctx_encrypt_init(&aead_ctx, &aead, key, ivlen) != 0) { + return -1; + } + + rv = ngtcp2_crypto_encrypt(p, &aead, &aead_ctx, plaintext, plaintextlen, iv, + ivlen, aad, aadlen); + + ngtcp2_crypto_aead_ctx_free(&aead_ctx); + + if (rv != 0) { + return -1; + } + + p += plaintextlen + aead.max_overhead; + memcpy(p, rand_data, sizeof(rand_data)); + p += sizeof(rand_data); + + return p - token; +} + +int ngtcp2_crypto_verify_retry_token( + ngtcp2_cid *odcid, const uint8_t *token, size_t tokenlen, + const uint8_t *secret, size_t secretlen, uint32_t version, + const ngtcp2_sockaddr *remote_addr, ngtcp2_socklen remote_addrlen, + const ngtcp2_cid *dcid, ngtcp2_duration timeout, ngtcp2_tstamp ts) { + uint8_t + plaintext[/* cid len = */ 1 + NGTCP2_MAX_CIDLEN + sizeof(ngtcp2_tstamp)]; + uint8_t key[16]; + uint8_t iv[12]; + size_t keylen; + size_t ivlen; + ngtcp2_crypto_aead_ctx aead_ctx; + ngtcp2_crypto_aead aead; + ngtcp2_crypto_md md; + uint8_t + aad[sizeof(version) + sizeof(ngtcp2_sockaddr_union) + NGTCP2_MAX_CIDLEN]; + size_t aadlen; + const uint8_t *rand_data; + const uint8_t *ciphertext; + size_t ciphertextlen; + size_t cil; + int rv; + ngtcp2_tstamp gen_ts; + + assert((size_t)remote_addrlen <= sizeof(ngtcp2_sockaddr_union)); + + if (tokenlen != NGTCP2_CRYPTO_MAX_RETRY_TOKENLEN || + token[0] != NGTCP2_CRYPTO_TOKEN_MAGIC_RETRY) { + return -1; + } + + rand_data = token + tokenlen - NGTCP2_CRYPTO_TOKEN_RAND_DATALEN; + ciphertext = token + 1; + ciphertextlen = tokenlen - 1 - NGTCP2_CRYPTO_TOKEN_RAND_DATALEN; + + ngtcp2_crypto_aead_aes_128_gcm(&aead); + ngtcp2_crypto_md_sha256(&md); + + keylen = ngtcp2_crypto_aead_keylen(&aead); + ivlen = ngtcp2_crypto_aead_noncelen(&aead); + + assert(sizeof(key) == keylen); + assert(sizeof(iv) == ivlen); + + if (crypto_derive_token_key(key, keylen, iv, ivlen, &md, secret, secretlen, + rand_data, NGTCP2_CRYPTO_TOKEN_RAND_DATALEN, + retry_token_info_prefix, + sizeof(retry_token_info_prefix) - 1) != 0) { + return -1; + } + + aadlen = crypto_generate_retry_token_aad(aad, version, remote_addr, + remote_addrlen, dcid); + + if (ngtcp2_crypto_aead_ctx_decrypt_init(&aead_ctx, &aead, key, ivlen) != 0) { + return -1; + } + + rv = ngtcp2_crypto_decrypt(plaintext, &aead, &aead_ctx, ciphertext, + ciphertextlen, iv, ivlen, aad, aadlen); + + ngtcp2_crypto_aead_ctx_free(&aead_ctx); + + if (rv != 0) { + return -1; + } + + cil = plaintext[0]; + + if (cil != 0 && (cil < NGTCP2_MIN_CIDLEN || cil > NGTCP2_MAX_CIDLEN)) { + return -1; + } + + memcpy(&gen_ts, plaintext + /* cid len = */ 1 + NGTCP2_MAX_CIDLEN, + sizeof(gen_ts)); + + gen_ts = ngtcp2_ntohl64(gen_ts); + if (gen_ts + timeout <= ts) { + return -1; + } + + ngtcp2_cid_init(odcid, plaintext + /* cid len = */ 1, cil); + + return 0; +} + +static size_t crypto_generate_regular_token_aad(uint8_t *dest, + const ngtcp2_sockaddr *sa) { + const uint8_t *addr; + size_t addrlen; + + switch (sa->sa_family) { + case NGTCP2_AF_INET: + addr = (const uint8_t *)&((const ngtcp2_sockaddr_in *)(void *)sa)->sin_addr; + addrlen = sizeof(((const ngtcp2_sockaddr_in *)(void *)sa)->sin_addr); + break; + case NGTCP2_AF_INET6: + addr = + (const uint8_t *)&((const ngtcp2_sockaddr_in6 *)(void *)sa)->sin6_addr; + addrlen = sizeof(((const ngtcp2_sockaddr_in6 *)(void *)sa)->sin6_addr); + break; + default: + assert(0); + abort(); + } + + memcpy(dest, addr, addrlen); + + return addrlen; +} + +static const uint8_t regular_token_info_prefix[] = "regular_token"; + +ngtcp2_ssize ngtcp2_crypto_generate_regular_token( + uint8_t *token, const uint8_t *secret, size_t secretlen, + const ngtcp2_sockaddr *remote_addr, ngtcp2_socklen remote_addrlen, + ngtcp2_tstamp ts) { + uint8_t plaintext[sizeof(ngtcp2_tstamp)]; + uint8_t rand_data[NGTCP2_CRYPTO_TOKEN_RAND_DATALEN]; + uint8_t key[16]; + uint8_t iv[12]; + size_t keylen; + size_t ivlen; + ngtcp2_crypto_aead aead; + ngtcp2_crypto_md md; + ngtcp2_crypto_aead_ctx aead_ctx; + size_t plaintextlen; + uint8_t aad[sizeof(ngtcp2_sockaddr_in6)]; + size_t aadlen; + uint8_t *p = plaintext; + ngtcp2_tstamp ts_be = ngtcp2_htonl64(ts); + int rv; + (void)remote_addrlen; + + memcpy(p, &ts_be, sizeof(ts_be)); + p += sizeof(ts_be); + + plaintextlen = (size_t)(p - plaintext); + + if (ngtcp2_crypto_random(rand_data, sizeof(rand_data)) != 0) { + return -1; + } + + ngtcp2_crypto_aead_aes_128_gcm(&aead); + ngtcp2_crypto_md_sha256(&md); + + keylen = ngtcp2_crypto_aead_keylen(&aead); + ivlen = ngtcp2_crypto_aead_noncelen(&aead); + + assert(sizeof(key) == keylen); + assert(sizeof(iv) == ivlen); + + if (crypto_derive_token_key(key, keylen, iv, ivlen, &md, secret, secretlen, + rand_data, sizeof(rand_data), + regular_token_info_prefix, + sizeof(regular_token_info_prefix) - 1) != 0) { + return -1; + } + + aadlen = crypto_generate_regular_token_aad(aad, remote_addr); + + p = token; + *p++ = NGTCP2_CRYPTO_TOKEN_MAGIC_REGULAR; + + if (ngtcp2_crypto_aead_ctx_encrypt_init(&aead_ctx, &aead, key, ivlen) != 0) { + return -1; + } + + rv = ngtcp2_crypto_encrypt(p, &aead, &aead_ctx, plaintext, plaintextlen, iv, + ivlen, aad, aadlen); + + ngtcp2_crypto_aead_ctx_free(&aead_ctx); + + if (rv != 0) { + return -1; + } + + p += plaintextlen + aead.max_overhead; + memcpy(p, rand_data, sizeof(rand_data)); + p += sizeof(rand_data); + + return p - token; +} + +int ngtcp2_crypto_verify_regular_token(const uint8_t *token, size_t tokenlen, + const uint8_t *secret, size_t secretlen, + const ngtcp2_sockaddr *remote_addr, + ngtcp2_socklen remote_addrlen, + ngtcp2_duration timeout, + ngtcp2_tstamp ts) { + uint8_t plaintext[sizeof(ngtcp2_tstamp)]; + uint8_t key[16]; + uint8_t iv[12]; + size_t keylen; + size_t ivlen; + ngtcp2_crypto_aead_ctx aead_ctx; + ngtcp2_crypto_aead aead; + ngtcp2_crypto_md md; + uint8_t aad[sizeof(ngtcp2_sockaddr_in6)]; + size_t aadlen; + const uint8_t *rand_data; + const uint8_t *ciphertext; + size_t ciphertextlen; + int rv; + ngtcp2_tstamp gen_ts; + (void)remote_addrlen; + + if (tokenlen != NGTCP2_CRYPTO_MAX_REGULAR_TOKENLEN || + token[0] != NGTCP2_CRYPTO_TOKEN_MAGIC_REGULAR) { + return -1; + } + + rand_data = token + tokenlen - NGTCP2_CRYPTO_TOKEN_RAND_DATALEN; + ciphertext = token + 1; + ciphertextlen = tokenlen - 1 - NGTCP2_CRYPTO_TOKEN_RAND_DATALEN; + + ngtcp2_crypto_aead_aes_128_gcm(&aead); + ngtcp2_crypto_md_sha256(&md); + + keylen = ngtcp2_crypto_aead_keylen(&aead); + ivlen = ngtcp2_crypto_aead_noncelen(&aead); + + assert(sizeof(key) == keylen); + assert(sizeof(iv) == ivlen); + + if (crypto_derive_token_key(key, keylen, iv, ivlen, &md, secret, secretlen, + rand_data, NGTCP2_CRYPTO_TOKEN_RAND_DATALEN, + regular_token_info_prefix, + sizeof(regular_token_info_prefix) - 1) != 0) { + return -1; + } + + aadlen = crypto_generate_regular_token_aad(aad, remote_addr); + + if (ngtcp2_crypto_aead_ctx_decrypt_init(&aead_ctx, &aead, key, ivlen) != 0) { + return -1; + } + + rv = ngtcp2_crypto_decrypt(plaintext, &aead, &aead_ctx, ciphertext, + ciphertextlen, iv, ivlen, aad, aadlen); + + ngtcp2_crypto_aead_ctx_free(&aead_ctx); + + if (rv != 0) { + return -1; + } + + memcpy(&gen_ts, plaintext, sizeof(gen_ts)); + + gen_ts = ngtcp2_ntohl64(gen_ts); + if (gen_ts + timeout <= ts) { + return -1; + } + + return 0; +} + +ngtcp2_ssize ngtcp2_crypto_write_connection_close( + uint8_t *dest, size_t destlen, uint32_t version, const ngtcp2_cid *dcid, + const ngtcp2_cid *scid, uint64_t error_code, const uint8_t *reason, + size_t reasonlen) { + uint8_t rx_secret[NGTCP2_CRYPTO_INITIAL_SECRETLEN]; + uint8_t tx_secret[NGTCP2_CRYPTO_INITIAL_SECRETLEN]; + uint8_t initial_secret[NGTCP2_CRYPTO_INITIAL_SECRETLEN]; + uint8_t tx_key[NGTCP2_CRYPTO_INITIAL_KEYLEN]; + uint8_t tx_iv[NGTCP2_CRYPTO_INITIAL_IVLEN]; + uint8_t tx_hp_key[NGTCP2_CRYPTO_INITIAL_KEYLEN]; + ngtcp2_crypto_ctx ctx; + ngtcp2_ssize spktlen; + ngtcp2_crypto_aead_ctx aead_ctx = {0}; + ngtcp2_crypto_cipher_ctx hp_ctx = {0}; + + ngtcp2_crypto_ctx_initial(&ctx); + + if (ngtcp2_crypto_derive_initial_secrets(rx_secret, tx_secret, initial_secret, + version, scid, + NGTCP2_CRYPTO_SIDE_SERVER) != 0) { + return -1; + } + + if (ngtcp2_crypto_derive_packet_protection_key( + tx_key, tx_iv, tx_hp_key, version, &ctx.aead, &ctx.md, tx_secret, + NGTCP2_CRYPTO_INITIAL_SECRETLEN) != 0) { + return -1; + } + + if (ngtcp2_crypto_aead_ctx_encrypt_init(&aead_ctx, &ctx.aead, tx_key, + NGTCP2_CRYPTO_INITIAL_IVLEN) != 0) { + spktlen = -1; + goto end; + } + + if (ngtcp2_crypto_cipher_ctx_encrypt_init(&hp_ctx, &ctx.hp, tx_hp_key) != 0) { + spktlen = -1; + goto end; + } + + spktlen = ngtcp2_pkt_write_connection_close( + dest, destlen, version, dcid, scid, error_code, reason, reasonlen, + ngtcp2_crypto_encrypt_cb, &ctx.aead, &aead_ctx, tx_iv, + ngtcp2_crypto_hp_mask_cb, &ctx.hp, &hp_ctx); + if (spktlen < 0) { + spktlen = -1; + } + +end: + ngtcp2_crypto_cipher_ctx_free(&hp_ctx); + ngtcp2_crypto_aead_ctx_free(&aead_ctx); + + return spktlen; +} + +ngtcp2_ssize ngtcp2_crypto_write_retry(uint8_t *dest, size_t destlen, + uint32_t version, const ngtcp2_cid *dcid, + const ngtcp2_cid *scid, + const ngtcp2_cid *odcid, + const uint8_t *token, size_t tokenlen) { + ngtcp2_crypto_aead aead; + ngtcp2_ssize spktlen; + ngtcp2_crypto_aead_ctx aead_ctx = {0}; + const uint8_t *key; + size_t noncelen; + + ngtcp2_crypto_aead_retry(&aead); + + switch (version) { + case NGTCP2_PROTO_VER_V1: + default: + key = (const uint8_t *)NGTCP2_RETRY_KEY_V1; + noncelen = sizeof(NGTCP2_RETRY_NONCE_V1) - 1; + break; + case NGTCP2_PROTO_VER_V2: + key = (const uint8_t *)NGTCP2_RETRY_KEY_V2; + noncelen = sizeof(NGTCP2_RETRY_NONCE_V2) - 1; + break; + } + + if (ngtcp2_crypto_aead_ctx_encrypt_init(&aead_ctx, &aead, key, noncelen) != + 0) { + return -1; + } + + spktlen = ngtcp2_pkt_write_retry(dest, destlen, version, dcid, scid, odcid, + token, tokenlen, ngtcp2_crypto_encrypt_cb, + &aead, &aead_ctx); + if (spktlen < 0) { + spktlen = -1; + } + + ngtcp2_crypto_aead_ctx_free(&aead_ctx); + + return spktlen; +} + +int ngtcp2_crypto_client_initial_cb(ngtcp2_conn *conn, void *user_data) { + const ngtcp2_cid *dcid = ngtcp2_conn_get_dcid(conn); + void *tls = ngtcp2_conn_get_tls_native_handle(conn); + (void)user_data; + + if (ngtcp2_crypto_derive_and_install_initial_key( + conn, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + ngtcp2_conn_get_client_chosen_version(conn), dcid) != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + if (crypto_set_local_transport_params(conn, tls) != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + if (ngtcp2_crypto_read_write_crypto_data( + conn, NGTCP2_ENCRYPTION_LEVEL_INITIAL, NULL, 0) != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +int ngtcp2_crypto_recv_retry_cb(ngtcp2_conn *conn, const ngtcp2_pkt_hd *hd, + void *user_data) { + (void)user_data; + + if (ngtcp2_crypto_derive_and_install_initial_key( + conn, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + ngtcp2_conn_get_client_chosen_version(conn), &hd->scid) != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +int ngtcp2_crypto_recv_client_initial_cb(ngtcp2_conn *conn, + const ngtcp2_cid *dcid, + void *user_data) { + (void)user_data; + + if (ngtcp2_crypto_derive_and_install_initial_key( + conn, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + ngtcp2_conn_get_client_chosen_version(conn), dcid) != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +int ngtcp2_crypto_version_negotiation_cb(ngtcp2_conn *conn, uint32_t version, + const ngtcp2_cid *client_dcid, + void *user_data) { + (void)user_data; + + if (ngtcp2_crypto_derive_and_install_vneg_initial_key( + conn, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, version, + client_dcid) != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + return 0; +} + +void ngtcp2_crypto_delete_crypto_aead_ctx_cb(ngtcp2_conn *conn, + ngtcp2_crypto_aead_ctx *aead_ctx, + void *user_data) { + (void)conn; + (void)user_data; + + ngtcp2_crypto_aead_ctx_free(aead_ctx); +} + +void ngtcp2_crypto_delete_crypto_cipher_ctx_cb( + ngtcp2_conn *conn, ngtcp2_crypto_cipher_ctx *cipher_ctx, void *user_data) { + (void)conn; + (void)user_data; + + ngtcp2_crypto_cipher_ctx_free(cipher_ctx); +} + +int ngtcp2_crypto_recv_crypto_data_cb(ngtcp2_conn *conn, + ngtcp2_encryption_level encryption_level, + uint64_t offset, const uint8_t *data, + size_t datalen, void *user_data) { + int rv; + (void)offset; + (void)user_data; + + if (ngtcp2_crypto_read_write_crypto_data(conn, encryption_level, data, + datalen) != 0) { + rv = ngtcp2_conn_get_tls_error(conn); + if (rv) { + return rv; + } + return NGTCP2_ERR_CRYPTO; + } + + return 0; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_crypto_shared.h b/contrib/libs/ngtcp2/lib/ngtcp2_crypto_shared.h new file mode 100644 index 0000000000..34158d3d02 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_crypto_shared.h @@ -0,0 +1,397 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef SHARED_H +#define SHARED_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2_crypto.h> + +/** + * @macro + * + * :macro:`NGTCP2_INITIAL_SALT_V1` is a salt value which is used to + * derive initial secret. It is used for QUIC v1. + */ +#define NGTCP2_INITIAL_SALT_V1 \ + "\x38\x76\x2c\xf7\xf5\x59\x34\xb3\x4d\x17\x9a\xe6\xa4\xc8\x0c\xad\xcc\xbb" \ + "\x7f\x0a" + +/** + * @macro + * + * :macro:`NGTCP2_INITIAL_SALT_V2` is a salt value which is used to + * derive initial secret. It is used for QUIC v2. + */ +#define NGTCP2_INITIAL_SALT_V2 \ + "\x0d\xed\xe3\xde\xf7\x00\xa6\xdb\x81\x93\x81\xbe\x6e\x26\x9d\xcb\xf9\xbd" \ + "\x2e\xd9" + +/* Maximum key usage (encryption) limits */ +#define NGTCP2_CRYPTO_MAX_ENCRYPTION_AES_GCM (1ULL << 23) +#define NGTCP2_CRYPTO_MAX_ENCRYPTION_CHACHA20_POLY1305 (1ULL << 62) +#define NGTCP2_CRYPTO_MAX_ENCRYPTION_AES_CCM (2965820ULL) + +/* Maximum authentication failure (decryption) limits during the + lifetime of a connection. */ +#define NGTCP2_CRYPTO_MAX_DECRYPTION_FAILURE_AES_GCM (1ULL << 52) +#define NGTCP2_CRYPTO_MAX_DECRYPTION_FAILURE_CHACHA20_POLY1305 (1ULL << 36) +#define NGTCP2_CRYPTO_MAX_DECRYPTION_FAILURE_AES_CCM (2965820ULL) + +/** + * @macro + * + * :macro:`NGTCP2_CRYPTO_INITIAL_SECRETLEN` is the length of secret + * for Initial packets. + */ +#define NGTCP2_CRYPTO_INITIAL_SECRETLEN 32 + +/** + * @macro + * + * :macro:`NGTCP2_CRYPTO_INITIAL_KEYLEN` is the length of key for + * Initial packets. + */ +#define NGTCP2_CRYPTO_INITIAL_KEYLEN 16 + +/** + * @macro + * + * :macro:`NGTCP2_CRYPTO_INITIAL_IVLEN` is the length of IV for + * Initial packets. + */ +#define NGTCP2_CRYPTO_INITIAL_IVLEN 12 + +/** + * @function + * + * `ngtcp2_crypto_ctx_initial` initializes |ctx| for Initial packet + * encryption and decryption. + */ +ngtcp2_crypto_ctx *ngtcp2_crypto_ctx_initial(ngtcp2_crypto_ctx *ctx); + +/** + * @function + * + * `ngtcp2_crypto_aead_init` initializes |aead| with the provided + * |aead_native_handle| which is an underlying AEAD object. + * + * If libngtcp2_crypto_quictls is linked, |aead_native_handle| must be + * a pointer to EVP_CIPHER. + * + * If libngtcp2_crypto_gnutls is linked, |aead_native_handle| must be + * gnutls_cipher_algorithm_t casted to ``void *``. + * + * If libngtcp2_crypto_boringssl is linked, |aead_native_handle| must + * be a pointer to EVP_AEAD. + */ +ngtcp2_crypto_aead *ngtcp2_crypto_aead_init(ngtcp2_crypto_aead *aead, + void *aead_native_handle); + +/** + * @function + * + * `ngtcp2_crypto_aead_retry` initializes |aead| with the AEAD cipher + * AEAD_AES_128_GCM for Retry packet integrity protection. + */ +ngtcp2_crypto_aead *ngtcp2_crypto_aead_retry(ngtcp2_crypto_aead *aead); + +/** + * @enum + * + * :type:`ngtcp2_crypto_side` indicates which side the application + * implements; client or server. + */ +typedef enum ngtcp2_crypto_side { + /** + * :enum:`NGTCP2_CRYPTO_SIDE_CLIENT` indicates that the application + * is client. + */ + NGTCP2_CRYPTO_SIDE_CLIENT, + /** + * :enum:`NGTCP2_CRYPTO_SIDE_SERVER` indicates that the application + * is server. + */ + NGTCP2_CRYPTO_SIDE_SERVER +} ngtcp2_crypto_side; + +/** + * @function + * + * `ngtcp2_crypto_derive_initial_secrets` derives initial secrets. + * |rx_secret| and |tx_secret| must point to the buffer of at least 32 + * bytes capacity. rx for read and tx for write. This function + * writes rx and tx secrets into |rx_secret| and |tx_secret| + * respectively. The length of secret is 32 bytes long. + * |client_dcid| is the destination connection ID in first Initial + * packet of client. If |initial_secret| is not NULL, the initial + * secret is written to it. It must point to the buffer which has at + * least 32 bytes capacity. The initial secret is 32 bytes long. + * |side| specifies the side of application. + * + * This function returns 0 if it succeeds, or -1. + */ +int ngtcp2_crypto_derive_initial_secrets(uint8_t *rx_secret, uint8_t *tx_secret, + uint8_t *initial_secret, + uint32_t version, + const ngtcp2_cid *client_dcid, + ngtcp2_crypto_side side); + +/** + * @function + * + * `ngtcp2_crypto_derive_packet_protection_key` derives packet + * protection key. This function writes packet protection key into + * the buffer pointed by |key|. The length of derived key is + * `ngtcp2_crypto_aead_keylen(aead) <ngtcp2_crypto_aead_keylen>` + * bytes. |key| must have enough capacity to store the key. This + * function writes packet protection IV into |iv|. The length of + * derived IV is `ngtcp2_crypto_packet_protection_ivlen(aead) + * <ngtcp2_crypto_packet_protection_ivlen>` bytes. |iv| must have + * enough capacity to store the IV. + * + * If |hp| is not NULL, this function also derives packet header + * protection key and writes the key into the buffer pointed by |hp|. + * The length of derived key is `ngtcp2_crypto_aead_keylen(aead) + * <ngtcp2_crypto_aead_keylen>` bytes. |hp|, if not NULL, must have + * enough capacity to store the key. + * + * This function returns 0 if it succeeds, or -1. + */ +int ngtcp2_crypto_derive_packet_protection_key(uint8_t *key, uint8_t *iv, + uint8_t *hp, uint32_t version, + const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_md *md, + const uint8_t *secret, + size_t secretlen); + +/** + * @function + * + * `ngtcp2_crypto_update_traffic_secret` derives the next generation + * of the traffic secret. |secret| specifies the current secret and + * its length is given in |secretlen|. The length of new key is the + * same as the current key. This function writes new key into the + * buffer pointed by |dest|. |dest| must have the enough capacity to + * store the new key. + * + * This function returns 0 if it succeeds, or -1. + */ +int ngtcp2_crypto_update_traffic_secret(uint8_t *dest, uint32_t version, + const ngtcp2_crypto_md *md, + const uint8_t *secret, + size_t secretlen); + +/** + * @function + * + * `ngtcp2_crypto_set_local_transport_params` sets QUIC transport + * parameter, which is encoded in wire format and stored in the buffer + * pointed by |buf| of length |len|, to the native handle |tls|. + * + * |tls| points to a implementation dependent TLS session object. If + * libngtcp2_crypto_quictls is linked, |tls| must be a pointer to SSL + * object. + * + * This function returns 0 if it succeeds, or -1. + */ +int ngtcp2_crypto_set_local_transport_params(void *tls, const uint8_t *buf, + size_t len); + +/** + * @function + * + * `ngtcp2_crypto_set_remote_transport_params` retrieves a remote QUIC + * transport parameters from |tls| and sets it to |conn| using + * `ngtcp2_conn_set_remote_transport_params`. + * + * |tls| points to a implementation dependent TLS session object. If + * libngtcp2_crypto_quictls is linked, |tls| must be a pointer to SSL + * object. + * + * This function returns 0 if it succeeds, or -1. + */ +int ngtcp2_crypto_set_remote_transport_params(ngtcp2_conn *conn, void *tls); + +/** + * @function + * + * `ngtcp2_crypto_derive_and_install_initial_key` derives initial + * keying materials and installs keys to |conn|. + * + * If |rx_secret| is not NULL, the secret for decryption is written to + * the buffer pointed by |rx_secret|. The length of secret is 32 + * bytes, and |rx_secret| must point to the buffer which has enough + * capacity. + * + * If |tx_secret| is not NULL, the secret for encryption is written to + * the buffer pointed by |tx_secret|. The length of secret is 32 + * bytes, and |tx_secret| must point to the buffer which has enough + * capacity. + * + * If |initial_secret| is not NULL, the initial secret is written to + * the buffer pointed by |initial_secret|. The length of secret is 32 + * bytes, and |initial_secret| must point to the buffer which has + * enough capacity. + * + * |client_dcid| is the destination connection ID in first Initial + * packet of client. + * + * If |rx_key| is not NULL, the derived packet protection key for + * decryption is written to the buffer pointed by |rx_key|. If + * |rx_iv| is not NULL, the derived packet protection IV for + * decryption is written to the buffer pointed by |rx_iv|. If |rx_hp| + * is not NULL, the derived header protection key for decryption is + * written to the buffer pointed by |rx_hp|. + * + * If |tx_key| is not NULL, the derived packet protection key for + * encryption is written to the buffer pointed by |tx_key|. If + * |tx_iv| is not NULL, the derived packet protection IV for + * encryption is written to the buffer pointed by |tx_iv|. If |tx_hp| + * is not NULL, the derived header protection key for encryption is + * written to the buffer pointed by |tx_hp|. + * + * The length of packet protection key and header protection key is 16 + * bytes long. The length of packet protection IV is 12 bytes long. + * + * This function calls `ngtcp2_conn_set_initial_crypto_ctx` to set + * initial AEAD and message digest algorithm. After the successful + * call of this function, application can use + * `ngtcp2_conn_get_initial_crypto_ctx` to get the object. + * + * This function returns 0 if it succeeds, or -1. + */ +int ngtcp2_crypto_derive_and_install_initial_key( + ngtcp2_conn *conn, uint8_t *rx_secret, uint8_t *tx_secret, + uint8_t *initial_secret, uint8_t *rx_key, uint8_t *rx_iv, uint8_t *rx_hp, + uint8_t *tx_key, uint8_t *tx_iv, uint8_t *tx_hp, uint32_t version, + const ngtcp2_cid *client_dcid); + +/** + * @function + * + * `ngtcp2_crypto_derive_and_install_vneg_initial_key` derives initial + * keying materials and installs keys to |conn|. This function is + * dedicated to install keys for |version| which is negotiated, or + * being negotiated. + * + * If |rx_secret| is not NULL, the secret for decryption is written to + * the buffer pointed by |rx_secret|. The length of secret is 32 + * bytes, and |rx_secret| must point to the buffer which has enough + * capacity. + * + * If |tx_secret| is not NULL, the secret for encryption is written to + * the buffer pointed by |tx_secret|. The length of secret is 32 + * bytes, and |tx_secret| must point to the buffer which has enough + * capacity. + * + * If |initial_secret| is not NULL, the initial secret is written to + * the buffer pointed by |initial_secret|. The length of secret is 32 + * bytes, and |initial_secret| must point to the buffer which has + * enough capacity. + * + * |client_dcid| is the destination connection ID in first Initial + * packet of client. + * + * If |rx_key| is not NULL, the derived packet protection key for + * decryption is written to the buffer pointed by |rx_key|. If + * |rx_iv| is not NULL, the derived packet protection IV for + * decryption is written to the buffer pointed by |rx_iv|. If |rx_hp| + * is not NULL, the derived header protection key for decryption is + * written to the buffer pointed by |rx_hp|. + * + * If |tx_key| is not NULL, the derived packet protection key for + * encryption is written to the buffer pointed by |tx_key|. If + * |tx_iv| is not NULL, the derived packet protection IV for + * encryption is written to the buffer pointed by |tx_iv|. If |tx_hp| + * is not NULL, the derived header protection key for encryption is + * written to the buffer pointed by |tx_hp|. + * + * The length of packet protection key and header protection key is 16 + * bytes long. The length of packet protection IV is 12 bytes long. + * + * This function returns 0 if it succeeds, or -1. + */ +int ngtcp2_crypto_derive_and_install_vneg_initial_key( + ngtcp2_conn *conn, uint8_t *rx_secret, uint8_t *tx_secret, + uint8_t *initial_secret, uint8_t *rx_key, uint8_t *rx_iv, uint8_t *rx_hp, + uint8_t *tx_key, uint8_t *tx_iv, uint8_t *tx_hp, uint32_t version, + const ngtcp2_cid *client_dcid); + +/** + * @function + * + * `ngtcp2_crypto_cipher_ctx_encrypt_init` initializes |cipher_ctx| + * with new cipher context object for encryption which is constructed + * to use |key| as encryption key. |cipher| specifies cipher to use. + * + * This function returns 0 if it succeeds, or -1. + */ +int ngtcp2_crypto_cipher_ctx_encrypt_init(ngtcp2_crypto_cipher_ctx *cipher_ctx, + const ngtcp2_crypto_cipher *cipher, + const uint8_t *key); + +/** + * @function + * + * `ngtcp2_crypto_cipher_ctx_free` frees up resources used by + * |cipher_ctx|. This function does not free the memory pointed by + * |cipher_ctx| itself. + */ +void ngtcp2_crypto_cipher_ctx_free(ngtcp2_crypto_cipher_ctx *cipher_ctx); + +/* + * `ngtcp2_crypto_md_sha256` initializes |md| with SHA256 message + * digest algorithm and returns |md|. + */ +ngtcp2_crypto_md *ngtcp2_crypto_md_sha256(ngtcp2_crypto_md *md); + +ngtcp2_crypto_aead *ngtcp2_crypto_aead_aes_128_gcm(ngtcp2_crypto_aead *aead); + +/* + * `ngtcp2_crypto_random` writes cryptographically-secure random + * |datalen| bytes into the buffer pointed by |data|. + * + * This function returns 0 if it succeeds, or -1. + */ +int ngtcp2_crypto_random(uint8_t *data, size_t datalen); + +/** + * @function + * + * `ngtcp2_crypto_hkdf_expand_label` performs HKDF expand label. The + * result is |destlen| bytes long, and is stored to the buffer pointed + * by |dest|. + * + * This function returns 0 if it succeeds, or -1. + */ +int ngtcp2_crypto_hkdf_expand_label(uint8_t *dest, size_t destlen, + const ngtcp2_crypto_md *md, + const uint8_t *secret, size_t secretlen, + const uint8_t *label, size_t labellen); + +#endif /* !defined(SHARED_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_err.c b/contrib/libs/ngtcp2/lib/ngtcp2_err.c new file mode 100644 index 0000000000..5e4794cd72 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_err.c @@ -0,0 +1,157 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_err.h" + +const char *ngtcp2_strerror(int liberr) { + switch (liberr) { + case 0: + return "NO_ERROR"; + case NGTCP2_ERR_INVALID_ARGUMENT: + return "ERR_INVALID_ARGUMENT"; + case NGTCP2_ERR_NOBUF: + return "ERR_NOBUF"; + case NGTCP2_ERR_PROTO: + return "ERR_PROTO"; + case NGTCP2_ERR_INVALID_STATE: + return "ERR_INVALID_STATE"; + case NGTCP2_ERR_ACK_FRAME: + return "ERR_ACK_FRAME"; + case NGTCP2_ERR_STREAM_ID_BLOCKED: + return "ERR_STREAM_ID_BLOCKED"; + case NGTCP2_ERR_STREAM_IN_USE: + return "ERR_STREAM_IN_USE"; + case NGTCP2_ERR_STREAM_DATA_BLOCKED: + return "ERR_STREAM_DATA_BLOCKED"; + case NGTCP2_ERR_FLOW_CONTROL: + return "ERR_FLOW_CONTROL"; + case NGTCP2_ERR_CONNECTION_ID_LIMIT: + return "ERR_CONNECTION_ID_LIMIT"; + case NGTCP2_ERR_STREAM_LIMIT: + return "ERR_STREAM_LIMIT"; + case NGTCP2_ERR_FINAL_SIZE: + return "ERR_FINAL_SIZE"; + case NGTCP2_ERR_CRYPTO: + return "ERR_CRYPTO"; + case NGTCP2_ERR_PKT_NUM_EXHAUSTED: + return "ERR_PKT_NUM_EXHAUSTED"; + case NGTCP2_ERR_NOMEM: + return "ERR_NOMEM"; + case NGTCP2_ERR_REQUIRED_TRANSPORT_PARAM: + return "ERR_REQUIRED_TRANSPORT_PARAM"; + case NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM: + return "ERR_MALFORMED_TRANSPORT_PARAM"; + case NGTCP2_ERR_FRAME_ENCODING: + return "ERR_FRAME_ENCODING"; + case NGTCP2_ERR_DECRYPT: + return "ERR_DECRYPT"; + case NGTCP2_ERR_STREAM_SHUT_WR: + return "ERR_STREAM_SHUT_WR"; + case NGTCP2_ERR_STREAM_NOT_FOUND: + return "ERR_STREAM_NOT_FOUND"; + case NGTCP2_ERR_STREAM_STATE: + return "ERR_STREAM_STATE"; + case NGTCP2_ERR_RECV_VERSION_NEGOTIATION: + return "ERR_RECV_VERSION_NEGOTIATION"; + case NGTCP2_ERR_CLOSING: + return "ERR_CLOSING"; + case NGTCP2_ERR_DRAINING: + return "ERR_DRAINING"; + case NGTCP2_ERR_TRANSPORT_PARAM: + return "ERR_TRANSPORT_PARAM"; + case NGTCP2_ERR_DISCARD_PKT: + return "ERR_DISCARD_PKT"; + case NGTCP2_ERR_CONN_ID_BLOCKED: + return "ERR_CONN_ID_BLOCKED"; + case NGTCP2_ERR_CALLBACK_FAILURE: + return "ERR_CALLBACK_FAILURE"; + case NGTCP2_ERR_INTERNAL: + return "ERR_INTERNAL"; + case NGTCP2_ERR_CRYPTO_BUFFER_EXCEEDED: + return "ERR_CRYPTO_BUFFER_EXCEEDED"; + case NGTCP2_ERR_WRITE_MORE: + return "ERR_WRITE_MORE"; + case NGTCP2_ERR_RETRY: + return "ERR_RETRY"; + case NGTCP2_ERR_DROP_CONN: + return "ERR_DROP_CONN"; + case NGTCP2_ERR_AEAD_LIMIT_REACHED: + return "ERR_AEAD_LIMIT_REACHED"; + case NGTCP2_ERR_NO_VIABLE_PATH: + return "ERR_NO_VIABLE_PATH"; + case NGTCP2_ERR_VERSION_NEGOTIATION: + return "ERR_VERSION_NEGOTIATION"; + case NGTCP2_ERR_HANDSHAKE_TIMEOUT: + return "ERR_HANDSHAKE_TIMEOUT"; + case NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE: + return "ERR_VERSION_NEGOTIATION_FAILURE"; + case NGTCP2_ERR_IDLE_CLOSE: + return "ERR_IDLE_CLOSE"; + default: + return "(unknown)"; + } +} + +int ngtcp2_err_is_fatal(int liberr) { return liberr < NGTCP2_ERR_FATAL; } + +uint64_t ngtcp2_err_infer_quic_transport_error_code(int liberr) { + switch (liberr) { + case 0: + return NGTCP2_NO_ERROR; + case NGTCP2_ERR_ACK_FRAME: + case NGTCP2_ERR_FRAME_ENCODING: + return NGTCP2_FRAME_ENCODING_ERROR; + case NGTCP2_ERR_FLOW_CONTROL: + return NGTCP2_FLOW_CONTROL_ERROR; + case NGTCP2_ERR_CONNECTION_ID_LIMIT: + return NGTCP2_CONNECTION_ID_LIMIT_ERROR; + case NGTCP2_ERR_STREAM_LIMIT: + return NGTCP2_STREAM_LIMIT_ERROR; + case NGTCP2_ERR_FINAL_SIZE: + return NGTCP2_FINAL_SIZE_ERROR; + case NGTCP2_ERR_REQUIRED_TRANSPORT_PARAM: + case NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM: + case NGTCP2_ERR_TRANSPORT_PARAM: + return NGTCP2_TRANSPORT_PARAMETER_ERROR; + case NGTCP2_ERR_INVALID_ARGUMENT: + case NGTCP2_ERR_NOMEM: + case NGTCP2_ERR_CALLBACK_FAILURE: + case NGTCP2_ERR_HANDSHAKE_TIMEOUT: + case NGTCP2_ERR_PKT_NUM_EXHAUSTED: + case NGTCP2_ERR_INTERNAL: + return NGTCP2_INTERNAL_ERROR; + case NGTCP2_ERR_STREAM_STATE: + return NGTCP2_STREAM_STATE_ERROR; + case NGTCP2_ERR_CRYPTO_BUFFER_EXCEEDED: + return NGTCP2_CRYPTO_BUFFER_EXCEEDED; + case NGTCP2_ERR_AEAD_LIMIT_REACHED: + return NGTCP2_AEAD_LIMIT_REACHED; + case NGTCP2_ERR_NO_VIABLE_PATH: + return NGTCP2_NO_VIABLE_PATH; + case NGTCP2_ERR_VERSION_NEGOTIATION_FAILURE: + return NGTCP2_VERSION_NEGOTIATION_ERROR; + default: + return NGTCP2_PROTOCOL_VIOLATION; + } +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_err.h b/contrib/libs/ngtcp2/lib/ngtcp2_err.h new file mode 100644 index 0000000000..44527b11bd --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_err.h @@ -0,0 +1,34 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_ERR_H +#define NGTCP2_ERR_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#endif /* !defined(NGTCP2_ERR_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_frame_chain.c b/contrib/libs/ngtcp2/lib/ngtcp2_frame_chain.c new file mode 100644 index 0000000000..cf0f117179 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_frame_chain.c @@ -0,0 +1,215 @@ +/* + * ngtcp2 + * + * Copyright (c) 2023 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_frame_chain.h" + +#include <string.h> +#include <assert.h> + +ngtcp2_objalloc_def(frame_chain, ngtcp2_frame_chain, oplent); + +int ngtcp2_frame_chain_new(ngtcp2_frame_chain **pfrc, const ngtcp2_mem *mem) { + *pfrc = ngtcp2_mem_malloc(mem, sizeof(ngtcp2_frame_chain)); + if (*pfrc == NULL) { + return NGTCP2_ERR_NOMEM; + } + + ngtcp2_frame_chain_init(*pfrc); + + return 0; +} + +int ngtcp2_frame_chain_objalloc_new(ngtcp2_frame_chain **pfrc, + ngtcp2_objalloc *objalloc) { + *pfrc = ngtcp2_objalloc_frame_chain_get(objalloc); + if (*pfrc == NULL) { + return NGTCP2_ERR_NOMEM; + } + + ngtcp2_frame_chain_init(*pfrc); + + return 0; +} + +int ngtcp2_frame_chain_extralen_new(ngtcp2_frame_chain **pfrc, size_t extralen, + const ngtcp2_mem *mem) { + *pfrc = ngtcp2_mem_malloc(mem, sizeof(ngtcp2_frame_chain) + extralen); + if (*pfrc == NULL) { + return NGTCP2_ERR_NOMEM; + } + + ngtcp2_frame_chain_init(*pfrc); + + return 0; +} + +int ngtcp2_frame_chain_stream_datacnt_objalloc_new(ngtcp2_frame_chain **pfrc, + size_t datacnt, + ngtcp2_objalloc *objalloc, + const ngtcp2_mem *mem) { + if (datacnt > NGTCP2_FRAME_CHAIN_STREAM_DATACNT_THRES) { + return ngtcp2_frame_chain_extralen_new(pfrc, + sizeof(ngtcp2_vec) * (datacnt - 1) - + NGTCP2_FRAME_CHAIN_STREAM_AVAIL, + mem); + } + + return ngtcp2_frame_chain_objalloc_new(pfrc, objalloc); +} + +int ngtcp2_frame_chain_new_token_objalloc_new(ngtcp2_frame_chain **pfrc, + const uint8_t *token, + size_t tokenlen, + ngtcp2_objalloc *objalloc, + const ngtcp2_mem *mem) { + size_t avail = sizeof(ngtcp2_frame) - sizeof(ngtcp2_new_token); + int rv; + uint8_t *p; + ngtcp2_frame *fr; + + if (tokenlen > avail) { + rv = ngtcp2_frame_chain_extralen_new(pfrc, tokenlen - avail, mem); + } else { + rv = ngtcp2_frame_chain_objalloc_new(pfrc, objalloc); + } + if (rv != 0) { + return rv; + } + + fr = &(*pfrc)->fr; + fr->type = NGTCP2_FRAME_NEW_TOKEN; + + p = (uint8_t *)fr + sizeof(ngtcp2_new_token); + memcpy(p, token, tokenlen); + + fr->new_token.token = p; + fr->new_token.tokenlen = tokenlen; + + return 0; +} + +void ngtcp2_frame_chain_del(ngtcp2_frame_chain *frc, const ngtcp2_mem *mem) { + ngtcp2_frame_chain_binder *binder; + + if (frc == NULL) { + return; + } + + binder = frc->binder; + if (binder && --binder->refcount == 0) { + ngtcp2_mem_free(mem, binder); + } + + ngtcp2_mem_free(mem, frc); +} + +void ngtcp2_frame_chain_objalloc_del(ngtcp2_frame_chain *frc, + ngtcp2_objalloc *objalloc, + const ngtcp2_mem *mem) { + ngtcp2_frame_chain_binder *binder; + + if (frc == NULL) { + return; + } + + switch (frc->fr.type) { + case NGTCP2_FRAME_CRYPTO: + case NGTCP2_FRAME_STREAM: + if (frc->fr.stream.datacnt > NGTCP2_FRAME_CHAIN_STREAM_DATACNT_THRES) { + ngtcp2_frame_chain_del(frc, mem); + + return; + } + + break; + case NGTCP2_FRAME_NEW_TOKEN: + if (frc->fr.new_token.tokenlen > + sizeof(ngtcp2_frame) - sizeof(ngtcp2_new_token)) { + ngtcp2_frame_chain_del(frc, mem); + + return; + } + + break; + } + + binder = frc->binder; + if (binder && --binder->refcount == 0) { + ngtcp2_mem_free(mem, binder); + } + + frc->binder = NULL; + + ngtcp2_objalloc_frame_chain_release(objalloc, frc); +} + +void ngtcp2_frame_chain_init(ngtcp2_frame_chain *frc) { + frc->next = NULL; + frc->binder = NULL; +} + +void ngtcp2_frame_chain_list_objalloc_del(ngtcp2_frame_chain *frc, + ngtcp2_objalloc *objalloc, + const ngtcp2_mem *mem) { + ngtcp2_frame_chain *next; + + for (; frc; frc = next) { + next = frc->next; + + ngtcp2_frame_chain_objalloc_del(frc, objalloc, mem); + } +} + +int ngtcp2_frame_chain_binder_new(ngtcp2_frame_chain_binder **pbinder, + const ngtcp2_mem *mem) { + *pbinder = ngtcp2_mem_calloc(mem, 1, sizeof(ngtcp2_frame_chain_binder)); + if (*pbinder == NULL) { + return NGTCP2_ERR_NOMEM; + } + + return 0; +} + +int ngtcp2_bind_frame_chains(ngtcp2_frame_chain *a, ngtcp2_frame_chain *b, + const ngtcp2_mem *mem) { + ngtcp2_frame_chain_binder *binder; + int rv; + + assert(b->binder == NULL); + + if (a->binder == NULL) { + rv = ngtcp2_frame_chain_binder_new(&binder, mem); + if (rv != 0) { + return rv; + } + + a->binder = binder; + ++a->binder->refcount; + } + + b->binder = a->binder; + ++b->binder->refcount; + + return 0; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_frame_chain.h b/contrib/libs/ngtcp2/lib/ngtcp2_frame_chain.h new file mode 100644 index 0000000000..c38f1aeac9 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_frame_chain.h @@ -0,0 +1,188 @@ +/* + * ngtcp2 + * + * Copyright (c) 2023 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_FRAME_CHAIN_H +#define NGTCP2_FRAME_CHAIN_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_pkt.h" +#include "ngtcp2_objalloc.h" + +/* NGTCP2_FRAME_CHAIN_BINDER_FLAG_NONE indicates that no flag is + set. */ +#define NGTCP2_FRAME_CHAIN_BINDER_FLAG_NONE 0x00u +/* NGTCP2_FRAME_CHAIN_BINDER_FLAG_ACK indicates that an information + which a frame carries has been acknowledged. */ +#define NGTCP2_FRAME_CHAIN_BINDER_FLAG_ACK 0x01u + +/* + * ngtcp2_frame_chain_binder binds 2 or more of ngtcp2_frame_chain to + * share the acknowledgement state. In general, all + * ngtcp2_frame_chains bound to the same binder must have the same + * information. + */ +typedef struct ngtcp2_frame_chain_binder { + size_t refcount; + /* flags is bitwise OR of zero or more of + NGTCP2_FRAME_CHAIN_BINDER_FLAG_*. */ + uint32_t flags; +} ngtcp2_frame_chain_binder; + +int ngtcp2_frame_chain_binder_new(ngtcp2_frame_chain_binder **pbinder, + const ngtcp2_mem *mem); + +typedef struct ngtcp2_frame_chain ngtcp2_frame_chain; + +/* + * ngtcp2_frame_chain chains frames in a single packet. + */ +struct ngtcp2_frame_chain { + union { + struct { + ngtcp2_frame_chain *next; + ngtcp2_frame_chain_binder *binder; + ngtcp2_frame fr; + }; + + ngtcp2_opl_entry oplent; + }; +}; + +ngtcp2_objalloc_decl(frame_chain, ngtcp2_frame_chain, oplent); + +/* + * ngtcp2_bind_frame_chains binds two frame chains |a| and |b| using + * new or existing ngtcp2_frame_chain_binder. |a| might have non-NULL + * a->binder. |b| must not have non-NULL b->binder. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + */ +int ngtcp2_bind_frame_chains(ngtcp2_frame_chain *a, ngtcp2_frame_chain *b, + const ngtcp2_mem *mem); + +/* NGTCP2_MAX_STREAM_DATACNT is the maximum number of ngtcp2_vec that + a ngtcp2_stream can include. */ +#define NGTCP2_MAX_STREAM_DATACNT 256 + +/* + * ngtcp2_frame_chain_new allocates ngtcp2_frame_chain object and + * assigns its pointer to |*pfrc|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_frame_chain_new(ngtcp2_frame_chain **pfrc, const ngtcp2_mem *mem); + +/* + * ngtcp2_frame_chain_objalloc_new behaves like + * ngtcp2_frame_chain_new, but it uses |objalloc| to allocate the object. + */ +int ngtcp2_frame_chain_objalloc_new(ngtcp2_frame_chain **pfrc, + ngtcp2_objalloc *objalloc); + +/* + * ngtcp2_frame_chain_extralen_new works like ngtcp2_frame_chain_new, + * but it allocates extra memory |extralen| in order to extend + * ngtcp2_frame. + */ +int ngtcp2_frame_chain_extralen_new(ngtcp2_frame_chain **pfrc, size_t extralen, + const ngtcp2_mem *mem); + +/* NGTCP2_FRAME_CHAIN_STREAM_AVAIL is the number of additional bytes + available after ngtcp2_stream when it is embedded in + ngtcp2_frame. */ +#define NGTCP2_FRAME_CHAIN_STREAM_AVAIL \ + (sizeof(ngtcp2_frame) - sizeof(ngtcp2_stream)) + +/* NGTCP2_FRAME_CHAIN_STREAM_DATACNT_THRES is the number of datacnt + that changes allocation method. If datacnt is more than this + value, ngtcp2_frame_chain is allocated without ngtcp2_objalloc. + Otherwise, it is allocated using ngtcp2_objalloc. */ +#define NGTCP2_FRAME_CHAIN_STREAM_DATACNT_THRES \ + (NGTCP2_FRAME_CHAIN_STREAM_AVAIL / sizeof(ngtcp2_vec) + 1) + +/* + * ngtcp2_frame_chain_stream_datacnt_objalloc_new works like + * ngtcp2_frame_chain_new, but it allocates enough data to store + * additional |datacnt| - 1 ngtcp2_vec object after ngtcp2_stream + * object. If no additional space is required, in other words, + * |datacnt| <= NGTCP2_FRAME_CHAIN_STREAM_DATACNT_THRES, + * ngtcp2_frame_chain_objalloc_new is called internally. Otherwise, + * ngtcp2_frame_chain_extralen_new is used and objalloc is not used. + * Therefore, it is important to call ngtcp2_frame_chain_objalloc_del + * without changing datacnt field. + */ +int ngtcp2_frame_chain_stream_datacnt_objalloc_new(ngtcp2_frame_chain **pfrc, + size_t datacnt, + ngtcp2_objalloc *objalloc, + const ngtcp2_mem *mem); + +int ngtcp2_frame_chain_new_token_objalloc_new(ngtcp2_frame_chain **pfrc, + const uint8_t *token, + size_t tokenlen, + ngtcp2_objalloc *objalloc, + const ngtcp2_mem *mem); + +/* + * ngtcp2_frame_chain_del deallocates |frc|. It also deallocates the + * memory pointed by |frc|. + */ +void ngtcp2_frame_chain_del(ngtcp2_frame_chain *frc, const ngtcp2_mem *mem); + +/* + * ngtcp2_frame_chain_objalloc_del adds |frc| to |objalloc| for reuse. + * It might just delete |frc| depending on the frame type and the size + * of |frc|. + */ +void ngtcp2_frame_chain_objalloc_del(ngtcp2_frame_chain *frc, + ngtcp2_objalloc *objalloc, + const ngtcp2_mem *mem); + +/* + * ngtcp2_frame_chain_init initializes |frc|. + */ +void ngtcp2_frame_chain_init(ngtcp2_frame_chain *frc); + +/* + * ngtcp2_frame_chain_list_objalloc_del adds all ngtcp2_frame_chain + * linked from |frc| to |objalloc| for reuse. Depending on the frame type + * and its size, ngtcp2_frame_chain might be deleted instead. + */ +void ngtcp2_frame_chain_list_objalloc_del(ngtcp2_frame_chain *frc, + ngtcp2_objalloc *objalloc, + const ngtcp2_mem *mem); + +#endif /* !defined(NGTCP2_FRAME_CHAIN_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_gaptr.c b/contrib/libs/ngtcp2/lib/ngtcp2_gaptr.c new file mode 100644 index 0000000000..1475c22865 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_gaptr.c @@ -0,0 +1,161 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_gaptr.h" + +#include <string.h> +#include <assert.h> + +void ngtcp2_gaptr_init(ngtcp2_gaptr *gaptr, const ngtcp2_mem *mem) { + ngtcp2_ksl_init(&gaptr->gap, ngtcp2_ksl_range_compar, sizeof(ngtcp2_range), + mem); + + gaptr->mem = mem; +} + +static int gaptr_gap_init(ngtcp2_gaptr *gaptr) { + ngtcp2_range range = {0, UINT64_MAX}; + + return ngtcp2_ksl_insert(&gaptr->gap, NULL, &range, NULL); +} + +void ngtcp2_gaptr_free(ngtcp2_gaptr *gaptr) { + if (gaptr == NULL) { + return; + } + + ngtcp2_ksl_free(&gaptr->gap); +} + +int ngtcp2_gaptr_push(ngtcp2_gaptr *gaptr, uint64_t offset, uint64_t datalen) { + int rv; + ngtcp2_range k, m, l, r, q = {offset, offset + datalen}; + ngtcp2_ksl_it it; + + if (ngtcp2_ksl_len(&gaptr->gap) == 0) { + rv = gaptr_gap_init(gaptr); + if (rv != 0) { + return rv; + } + } + + it = ngtcp2_ksl_lower_bound_compar(&gaptr->gap, &q, + ngtcp2_ksl_range_exclusive_compar); + + for (; !ngtcp2_ksl_it_end(&it);) { + k = *(ngtcp2_range *)ngtcp2_ksl_it_key(&it); + m = ngtcp2_range_intersect(&q, &k); + if (!ngtcp2_range_len(&m)) { + break; + } + + if (ngtcp2_range_eq(&k, &m)) { + ngtcp2_ksl_remove_hint(&gaptr->gap, &it, &it, &k); + continue; + } + + ngtcp2_range_cut(&l, &r, &k, &m); + + if (ngtcp2_range_len(&l)) { + ngtcp2_ksl_update_key(&gaptr->gap, &k, &l); + + if (ngtcp2_range_len(&r)) { + rv = ngtcp2_ksl_insert(&gaptr->gap, &it, &r, NULL); + if (rv != 0) { + return rv; + } + } + } else if (ngtcp2_range_len(&r)) { + ngtcp2_ksl_update_key(&gaptr->gap, &k, &r); + } + + ngtcp2_ksl_it_next(&it); + } + + return 0; +} + +uint64_t ngtcp2_gaptr_first_gap_offset(const ngtcp2_gaptr *gaptr) { + ngtcp2_ksl_it it; + + if (ngtcp2_ksl_len(&gaptr->gap) == 0) { + return 0; + } + + it = ngtcp2_ksl_begin(&gaptr->gap); + + return ((ngtcp2_range *)ngtcp2_ksl_it_key(&it))->begin; +} + +ngtcp2_range ngtcp2_gaptr_get_first_gap_after(const ngtcp2_gaptr *gaptr, + uint64_t offset) { + ngtcp2_range q = {offset, offset + 1}; + ngtcp2_ksl_it it; + + if (ngtcp2_ksl_len(&gaptr->gap) == 0) { + ngtcp2_range r = {0, UINT64_MAX}; + return r; + } + + it = ngtcp2_ksl_lower_bound_compar(&gaptr->gap, &q, + ngtcp2_ksl_range_exclusive_compar); + + assert(!ngtcp2_ksl_it_end(&it)); + + return *(ngtcp2_range *)ngtcp2_ksl_it_key(&it); +} + +int ngtcp2_gaptr_is_pushed(const ngtcp2_gaptr *gaptr, uint64_t offset, + uint64_t datalen) { + ngtcp2_range q = {offset, offset + datalen}; + ngtcp2_ksl_it it; + ngtcp2_range m; + + if (ngtcp2_ksl_len(&gaptr->gap) == 0) { + return 0; + } + + it = ngtcp2_ksl_lower_bound_compar(&gaptr->gap, &q, + ngtcp2_ksl_range_exclusive_compar); + m = ngtcp2_range_intersect(&q, (ngtcp2_range *)ngtcp2_ksl_it_key(&it)); + + return ngtcp2_range_len(&m) == 0; +} + +void ngtcp2_gaptr_drop_first_gap(ngtcp2_gaptr *gaptr) { + ngtcp2_ksl_it it; + ngtcp2_range r; + + if (ngtcp2_ksl_len(&gaptr->gap) == 0) { + return; + } + + it = ngtcp2_ksl_begin(&gaptr->gap); + + assert(!ngtcp2_ksl_it_end(&it)); + + r = *(ngtcp2_range *)ngtcp2_ksl_it_key(&it); + + ngtcp2_ksl_remove_hint(&gaptr->gap, NULL, &it, &r); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_gaptr.h b/contrib/libs/ngtcp2/lib/ngtcp2_gaptr.h new file mode 100644 index 0000000000..3120676cf8 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_gaptr.h @@ -0,0 +1,98 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_GAPTR_H +#define NGTCP2_GAPTR_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_mem.h" +#include "ngtcp2_ksl.h" +#include "ngtcp2_range.h" + +/* + * ngtcp2_gaptr maintains the gap in the range [0, UINT64_MAX). + */ +typedef struct ngtcp2_gaptr { + /* gap maintains the range of offset which is not pushed + yet. Initially, its range is [0, UINT64_MAX). "gap" is the range + that is not pushed yet. */ + ngtcp2_ksl gap; + /* mem is custom memory allocator */ + const ngtcp2_mem *mem; +} ngtcp2_gaptr; + +/* + * ngtcp2_gaptr_init initializes |gaptr|. + */ +void ngtcp2_gaptr_init(ngtcp2_gaptr *gaptr, const ngtcp2_mem *mem); + +/* + * ngtcp2_gaptr_free frees resources allocated for |gaptr|. + */ +void ngtcp2_gaptr_free(ngtcp2_gaptr *gaptr); + +/* + * ngtcp2_gaptr_push pushes the range [offset, offset + datalen). + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + */ +int ngtcp2_gaptr_push(ngtcp2_gaptr *gaptr, uint64_t offset, uint64_t datalen); + +/* + * ngtcp2_gaptr_first_gap_offset returns the offset to the first gap. + * If there is no gap, it returns UINT64_MAX. + */ +uint64_t ngtcp2_gaptr_first_gap_offset(const ngtcp2_gaptr *gaptr); + +/* + * ngtcp2_gaptr_get_first_gap_after returns the first gap which + * includes or comes after |offset|. + */ +ngtcp2_range ngtcp2_gaptr_get_first_gap_after(const ngtcp2_gaptr *gaptr, + uint64_t offset); + +/* + * ngtcp2_gaptr_is_pushed returns nonzero if range [offset, offset + + * datalen) is completely pushed into this object. + */ +int ngtcp2_gaptr_is_pushed(const ngtcp2_gaptr *gaptr, uint64_t offset, + uint64_t datalen); + +/* + * ngtcp2_gaptr_drop_first_gap deletes the first gap entirely as if + * the range is pushed. This function assumes that at least one gap + * exists. + */ +void ngtcp2_gaptr_drop_first_gap(ngtcp2_gaptr *gaptr); + +#endif /* !defined(NGTCP2_GAPTR_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_idtr.c b/contrib/libs/ngtcp2/lib/ngtcp2_idtr.c new file mode 100644 index 0000000000..2cf9d3cbfd --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_idtr.c @@ -0,0 +1,66 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_idtr.h" + +#include <assert.h> + +void ngtcp2_idtr_init(ngtcp2_idtr *idtr, const ngtcp2_mem *mem) { + ngtcp2_gaptr_init(&idtr->gap, mem); +} + +void ngtcp2_idtr_free(ngtcp2_idtr *idtr) { + if (idtr == NULL) { + return; + } + + ngtcp2_gaptr_free(&idtr->gap); +} + +/* + * id_from_stream_id translates |stream_id| to an internal ID. + */ +static uint64_t id_from_stream_id(int64_t stream_id) { + return (uint64_t)(stream_id >> 2); +} + +int ngtcp2_idtr_open(ngtcp2_idtr *idtr, int64_t stream_id) { + uint64_t q; + + q = id_from_stream_id(stream_id); + + if (ngtcp2_gaptr_is_pushed(&idtr->gap, q, 1)) { + return NGTCP2_ERR_STREAM_IN_USE; + } + + return ngtcp2_gaptr_push(&idtr->gap, q, 1); +} + +int ngtcp2_idtr_is_open(const ngtcp2_idtr *idtr, int64_t stream_id) { + uint64_t q; + + q = id_from_stream_id(stream_id); + + return ngtcp2_gaptr_is_pushed(&idtr->gap, q, 1); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_idtr.h b/contrib/libs/ngtcp2/lib/ngtcp2_idtr.h new file mode 100644 index 0000000000..0671f5ed91 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_idtr.h @@ -0,0 +1,76 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_IDTR_H +#define NGTCP2_IDTR_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_mem.h" +#include "ngtcp2_gaptr.h" + +/* + * ngtcp2_idtr tracks the usage of stream ID. + */ +typedef struct ngtcp2_idtr { + /* gap maintains the range of an internal ID which is not used yet. + Initially, its range is [0, UINT64_MAX). The internal ID and + stream ID are in the different number spaces. See + id_from_stream_id to convert a stream ID to an internal ID. */ + ngtcp2_gaptr gap; +} ngtcp2_idtr; + +/* + * ngtcp2_idtr_init initializes |idtr|. + */ +void ngtcp2_idtr_init(ngtcp2_idtr *idtr, const ngtcp2_mem *mem); + +/* + * ngtcp2_idtr_free frees resources allocated for |idtr|. + */ +void ngtcp2_idtr_free(ngtcp2_idtr *idtr); + +/* + * ngtcp2_idtr_open claims that |stream_id| is in use. + * + * It returns 0 if it succeeds, or one of the following negative error + * codes: + * + * NGTCP2_ERR_STREAM_IN_USE + * |stream_id| has already been used. + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_idtr_open(ngtcp2_idtr *idtr, int64_t stream_id); + +/* + * ngtcp2_idtr_open returns nonzero if |stream_id| is in use. + */ +int ngtcp2_idtr_is_open(const ngtcp2_idtr *idtr, int64_t stream_id); + +#endif /* !defined(NGTCP2_IDTR_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_ksl.c b/contrib/libs/ngtcp2/lib/ngtcp2_ksl.c new file mode 100644 index 0000000000..2280b462cb --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_ksl.c @@ -0,0 +1,827 @@ +/* + * ngtcp2 + * + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_ksl.h" + +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <stdio.h> + +#include "ngtcp2_macro.h" +#include "ngtcp2_mem.h" +#include "ngtcp2_range.h" + +static ngtcp2_ksl_blk null_blk = {{{NULL, NULL, 0, 0, {0}}}}; + +ngtcp2_objalloc_def(ksl_blk, ngtcp2_ksl_blk, oplent); + +static size_t ksl_nodelen(size_t keylen) { + assert(keylen >= sizeof(uint64_t)); + + return (sizeof(ngtcp2_ksl_node) + keylen - sizeof(uint64_t) + 0x7u) & + ~(uintptr_t)0x7u; +} + +static size_t ksl_blklen(size_t nodelen) { + return sizeof(ngtcp2_ksl_blk) + nodelen * NGTCP2_KSL_MAX_NBLK - + sizeof(uint64_t); +} + +/* + * ksl_node_set_key sets |key| to |node|. + */ +static void ksl_node_set_key(ngtcp2_ksl *ksl, ngtcp2_ksl_node *node, + const void *key) { + memcpy(node->key, key, ksl->keylen); +} + +void ngtcp2_ksl_init(ngtcp2_ksl *ksl, ngtcp2_ksl_compar compar, size_t keylen, + const ngtcp2_mem *mem) { + size_t nodelen = ksl_nodelen(keylen); + + ngtcp2_objalloc_init(&ksl->blkalloc, + (ksl_blklen(nodelen) + 0xfu) & ~(uintptr_t)0xfu, mem); + + ksl->head = NULL; + ksl->front = ksl->back = NULL; + ksl->compar = compar; + ksl->n = 0; + ksl->keylen = keylen; + ksl->nodelen = nodelen; +} + +static ngtcp2_ksl_blk *ksl_blk_objalloc_new(ngtcp2_ksl *ksl) { + return ngtcp2_objalloc_ksl_blk_len_get(&ksl->blkalloc, + ksl_blklen(ksl->nodelen)); +} + +static void ksl_blk_objalloc_del(ngtcp2_ksl *ksl, ngtcp2_ksl_blk *blk) { + ngtcp2_objalloc_ksl_blk_release(&ksl->blkalloc, blk); +} + +static int ksl_head_init(ngtcp2_ksl *ksl) { + ngtcp2_ksl_blk *head = ksl_blk_objalloc_new(ksl); + + if (!head) { + return NGTCP2_ERR_NOMEM; + } + + head->next = head->prev = NULL; + head->n = 0; + head->leaf = 1; + + ksl->head = head; + ksl->front = ksl->back = head; + + return 0; +} + +#ifdef NOMEMPOOL +/* + * ksl_free_blk frees |blk| recursively. + */ +static void ksl_free_blk(ngtcp2_ksl *ksl, ngtcp2_ksl_blk *blk) { + size_t i; + + if (!blk->leaf) { + for (i = 0; i < blk->n; ++i) { + ksl_free_blk(ksl, ngtcp2_ksl_nth_node(ksl, blk, i)->blk); + } + } + + ksl_blk_objalloc_del(ksl, blk); +} +#endif /* defined(NOMEMPOOL) */ + +void ngtcp2_ksl_free(ngtcp2_ksl *ksl) { + if (!ksl || !ksl->head) { + return; + } + +#ifdef NOMEMPOOL + ksl_free_blk(ksl, ksl->head); +#endif /* defined(NOMEMPOOL) */ + + ngtcp2_objalloc_free(&ksl->blkalloc); +} + +/* + * ksl_split_blk splits |blk| into 2 ngtcp2_ksl_blk objects. The new + * ngtcp2_ksl_blk is always the "right" block. + * + * It returns the pointer to the ngtcp2_ksl_blk created which is the + * located at the right of |blk|, or NULL which indicates out of + * memory error. + */ +static ngtcp2_ksl_blk *ksl_split_blk(ngtcp2_ksl *ksl, ngtcp2_ksl_blk *blk) { + ngtcp2_ksl_blk *rblk; + + rblk = ksl_blk_objalloc_new(ksl); + if (rblk == NULL) { + return NULL; + } + + rblk->next = blk->next; + blk->next = rblk; + + if (rblk->next) { + rblk->next->prev = rblk; + } else if (ksl->back == blk) { + ksl->back = rblk; + } + + rblk->prev = blk; + rblk->leaf = blk->leaf; + + rblk->n = blk->n / 2; + blk->n -= rblk->n; + + memcpy(rblk->nodes, blk->nodes + ksl->nodelen * blk->n, + ksl->nodelen * rblk->n); + + assert(blk->n >= NGTCP2_KSL_MIN_NBLK); + assert(rblk->n >= NGTCP2_KSL_MIN_NBLK); + + return rblk; +} + +/* + * ksl_split_node splits a node included in |blk| at the position |i| + * into 2 adjacent nodes. The new node is always inserted at the + * position |i+1|. + * + * It returns 0 if it succeeds, or one of the following negative error + * codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int ksl_split_node(ngtcp2_ksl *ksl, ngtcp2_ksl_blk *blk, size_t i) { + ngtcp2_ksl_node *node; + ngtcp2_ksl_blk *lblk = ngtcp2_ksl_nth_node(ksl, blk, i)->blk, *rblk; + + rblk = ksl_split_blk(ksl, lblk); + if (rblk == NULL) { + return NGTCP2_ERR_NOMEM; + } + + memmove(blk->nodes + (i + 2) * ksl->nodelen, + blk->nodes + (i + 1) * ksl->nodelen, + ksl->nodelen * (blk->n - (i + 1))); + + node = ngtcp2_ksl_nth_node(ksl, blk, i + 1); + node->blk = rblk; + ++blk->n; + ksl_node_set_key(ksl, node, ngtcp2_ksl_nth_node(ksl, rblk, rblk->n - 1)->key); + + node = ngtcp2_ksl_nth_node(ksl, blk, i); + ksl_node_set_key(ksl, node, ngtcp2_ksl_nth_node(ksl, lblk, lblk->n - 1)->key); + + return 0; +} + +/* + * ksl_split_head splits a head (root) block. It increases the height + * of skip list by 1. + * + * It returns 0 if it succeeds, or one of the following negative error + * codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +static int ksl_split_head(ngtcp2_ksl *ksl) { + ngtcp2_ksl_blk *rblk = NULL, *lblk, *nhead = NULL; + ngtcp2_ksl_node *node; + + rblk = ksl_split_blk(ksl, ksl->head); + if (rblk == NULL) { + return NGTCP2_ERR_NOMEM; + } + + lblk = ksl->head; + + nhead = ksl_blk_objalloc_new(ksl); + + if (nhead == NULL) { + ksl_blk_objalloc_del(ksl, rblk); + return NGTCP2_ERR_NOMEM; + } + + nhead->next = nhead->prev = NULL; + nhead->n = 2; + nhead->leaf = 0; + + node = ngtcp2_ksl_nth_node(ksl, nhead, 0); + ksl_node_set_key(ksl, node, ngtcp2_ksl_nth_node(ksl, lblk, lblk->n - 1)->key); + node->blk = lblk; + + node = ngtcp2_ksl_nth_node(ksl, nhead, 1); + ksl_node_set_key(ksl, node, ngtcp2_ksl_nth_node(ksl, rblk, rblk->n - 1)->key); + node->blk = rblk; + + ksl->head = nhead; + + return 0; +} + +/* + * ksl_insert_node inserts a node whose key is |key| with the + * associated |data| at the index of |i|. This function assumes that + * the number of nodes contained by |blk| is strictly less than + * NGTCP2_KSL_MAX_NBLK. + */ +static void ksl_insert_node(ngtcp2_ksl *ksl, ngtcp2_ksl_blk *blk, size_t i, + const ngtcp2_ksl_key *key, void *data) { + ngtcp2_ksl_node *node; + + assert(blk->n < NGTCP2_KSL_MAX_NBLK); + + memmove(blk->nodes + (i + 1) * ksl->nodelen, blk->nodes + i * ksl->nodelen, + ksl->nodelen * (blk->n - i)); + + node = ngtcp2_ksl_nth_node(ksl, blk, i); + ksl_node_set_key(ksl, node, key); + node->data = data; + + ++blk->n; +} + +static size_t ksl_search(const ngtcp2_ksl *ksl, ngtcp2_ksl_blk *blk, + const ngtcp2_ksl_key *key, ngtcp2_ksl_compar compar) { + size_t i; + ngtcp2_ksl_node *node; + + for (i = 0, node = (ngtcp2_ksl_node *)(void *)blk->nodes; + i < blk->n && compar((ngtcp2_ksl_key *)node->key, key); + ++i, node = (ngtcp2_ksl_node *)(void *)((uint8_t *)node + ksl->nodelen)) + ; + + return i; +} + +int ngtcp2_ksl_insert(ngtcp2_ksl *ksl, ngtcp2_ksl_it *it, + const ngtcp2_ksl_key *key, void *data) { + ngtcp2_ksl_blk *blk; + ngtcp2_ksl_node *node; + size_t i; + int rv; + + if (!ksl->head) { + rv = ksl_head_init(ksl); + if (rv != 0) { + return rv; + } + } + + if (ksl->head->n == NGTCP2_KSL_MAX_NBLK) { + rv = ksl_split_head(ksl); + if (rv != 0) { + return rv; + } + } + + blk = ksl->head; + + for (;;) { + i = ksl_search(ksl, blk, key, ksl->compar); + + if (blk->leaf) { + if (i < blk->n && + !ksl->compar(key, ngtcp2_ksl_nth_node(ksl, blk, i)->key)) { + if (it) { + *it = ngtcp2_ksl_end(ksl); + } + + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + ksl_insert_node(ksl, blk, i, key, data); + ++ksl->n; + + if (it) { + ngtcp2_ksl_it_init(it, ksl, blk, i); + } + + return 0; + } + + if (i == blk->n) { + /* This insertion extends the largest key in this subtree. */ + for (; !blk->leaf;) { + node = ngtcp2_ksl_nth_node(ksl, blk, blk->n - 1); + if (node->blk->n == NGTCP2_KSL_MAX_NBLK) { + rv = ksl_split_node(ksl, blk, blk->n - 1); + if (rv != 0) { + return rv; + } + + node = ngtcp2_ksl_nth_node(ksl, blk, blk->n - 1); + } + + ksl_node_set_key(ksl, node, key); + blk = node->blk; + } + + ksl_insert_node(ksl, blk, blk->n, key, data); + ++ksl->n; + + if (it) { + ngtcp2_ksl_it_init(it, ksl, blk, blk->n - 1); + } + + return 0; + } + + node = ngtcp2_ksl_nth_node(ksl, blk, i); + + if (node->blk->n == NGTCP2_KSL_MAX_NBLK) { + rv = ksl_split_node(ksl, blk, i); + if (rv != 0) { + return rv; + } + + if (ksl->compar((ngtcp2_ksl_key *)node->key, key)) { + node = ngtcp2_ksl_nth_node(ksl, blk, i + 1); + + if (ksl->compar((ngtcp2_ksl_key *)node->key, key)) { + ksl_node_set_key(ksl, node, key); + } + } + } + + blk = node->blk; + } +} + +/* + * ksl_remove_node removes the node included in |blk| at the index of + * |i|. + */ +static void ksl_remove_node(ngtcp2_ksl *ksl, ngtcp2_ksl_blk *blk, size_t i) { + memmove(blk->nodes + i * ksl->nodelen, blk->nodes + (i + 1) * ksl->nodelen, + ksl->nodelen * (blk->n - (i + 1))); + + --blk->n; +} + +/* + * ksl_merge_node merges 2 nodes which are the nodes at the index of + * |i| and |i + 1|. + * + * If |blk| is the head (root) block and it contains just 2 nodes + * before merging nodes, the merged block becomes head block, which + * decreases the height of |ksl| by 1. + * + * This function returns the pointer to the merged block. + */ +static ngtcp2_ksl_blk *ksl_merge_node(ngtcp2_ksl *ksl, ngtcp2_ksl_blk *blk, + size_t i) { + ngtcp2_ksl_node *lnode; + ngtcp2_ksl_blk *lblk, *rblk; + + assert(i + 1 < blk->n); + + lnode = ngtcp2_ksl_nth_node(ksl, blk, i); + + lblk = lnode->blk; + rblk = ngtcp2_ksl_nth_node(ksl, blk, i + 1)->blk; + + assert(lblk->n + rblk->n < NGTCP2_KSL_MAX_NBLK); + + memcpy(lblk->nodes + ksl->nodelen * lblk->n, rblk->nodes, + ksl->nodelen * rblk->n); + + lblk->n += rblk->n; + lblk->next = rblk->next; + + if (lblk->next) { + lblk->next->prev = lblk; + } else if (ksl->back == rblk) { + ksl->back = lblk; + } + + ksl_blk_objalloc_del(ksl, rblk); + + if (ksl->head == blk && blk->n == 2) { + ksl_blk_objalloc_del(ksl, ksl->head); + ksl->head = lblk; + } else { + ksl_remove_node(ksl, blk, i + 1); + ksl_node_set_key(ksl, lnode, + ngtcp2_ksl_nth_node(ksl, lblk, lblk->n - 1)->key); + } + + return lblk; +} + +/* + * ksl_shift_left moves the first nodes in blk->nodes[i]->blk->nodes + * to blk->nodes[i - 1]->blk->nodes in a manner that they have the + * same amount of nodes as much as possible. + */ +static void ksl_shift_left(ngtcp2_ksl *ksl, ngtcp2_ksl_blk *blk, size_t i) { + ngtcp2_ksl_node *lnode, *rnode; + ngtcp2_ksl_blk *lblk, *rblk; + size_t n; + + assert(i > 0); + + lnode = ngtcp2_ksl_nth_node(ksl, blk, i - 1); + rnode = ngtcp2_ksl_nth_node(ksl, blk, i); + + lblk = lnode->blk; + rblk = rnode->blk; + + assert(lblk->n < NGTCP2_KSL_MAX_NBLK); + assert(rblk->n > NGTCP2_KSL_MIN_NBLK); + + n = (lblk->n + rblk->n + 1) / 2 - lblk->n; + + assert(n > 0); + assert(lblk->n <= NGTCP2_KSL_MAX_NBLK - n); + assert(rblk->n >= NGTCP2_KSL_MIN_NBLK + n); + + memcpy(lblk->nodes + ksl->nodelen * lblk->n, rblk->nodes, ksl->nodelen * n); + + lblk->n += (uint32_t)n; + rblk->n -= (uint32_t)n; + + ksl_node_set_key(ksl, lnode, + ngtcp2_ksl_nth_node(ksl, lblk, lblk->n - 1)->key); + + memmove(rblk->nodes, rblk->nodes + ksl->nodelen * n, ksl->nodelen * rblk->n); +} + +/* + * ksl_shift_right moves the last nodes in blk->nodes[i]->blk->nodes + * to blk->nodes[i + 1]->blk->nodes in a manner that they have the + * same amount of nodes as much as possible. + */ +static void ksl_shift_right(ngtcp2_ksl *ksl, ngtcp2_ksl_blk *blk, size_t i) { + ngtcp2_ksl_node *lnode, *rnode; + ngtcp2_ksl_blk *lblk, *rblk; + size_t n; + + assert(i < blk->n - 1); + + lnode = ngtcp2_ksl_nth_node(ksl, blk, i); + rnode = ngtcp2_ksl_nth_node(ksl, blk, i + 1); + + lblk = lnode->blk; + rblk = rnode->blk; + + assert(lblk->n > NGTCP2_KSL_MIN_NBLK); + assert(rblk->n < NGTCP2_KSL_MAX_NBLK); + + n = (lblk->n + rblk->n + 1) / 2 - rblk->n; + + assert(n > 0); + assert(lblk->n >= NGTCP2_KSL_MIN_NBLK + n); + assert(rblk->n <= NGTCP2_KSL_MAX_NBLK - n); + + memmove(rblk->nodes + ksl->nodelen * n, rblk->nodes, ksl->nodelen * rblk->n); + + rblk->n += (uint32_t)n; + lblk->n -= (uint32_t)n; + + memcpy(rblk->nodes, lblk->nodes + ksl->nodelen * lblk->n, ksl->nodelen * n); + + ksl_node_set_key(ksl, lnode, + ngtcp2_ksl_nth_node(ksl, lblk, lblk->n - 1)->key); +} + +/* + * key_equal returns nonzero if |lhs| and |rhs| are equal using the + * function |compar|. + */ +static int key_equal(ngtcp2_ksl_compar compar, const ngtcp2_ksl_key *lhs, + const ngtcp2_ksl_key *rhs) { + return !compar(lhs, rhs) && !compar(rhs, lhs); +} + +int ngtcp2_ksl_remove_hint(ngtcp2_ksl *ksl, ngtcp2_ksl_it *it, + const ngtcp2_ksl_it *hint, + const ngtcp2_ksl_key *key) { + ngtcp2_ksl_blk *blk = hint->blk; + + assert(ksl->head); + + if (blk->n <= NGTCP2_KSL_MIN_NBLK) { + return ngtcp2_ksl_remove(ksl, it, key); + } + + ksl_remove_node(ksl, blk, hint->i); + + --ksl->n; + + if (it) { + if (hint->i == blk->n && blk->next) { + ngtcp2_ksl_it_init(it, ksl, blk->next, 0); + } else { + ngtcp2_ksl_it_init(it, ksl, blk, hint->i); + } + } + + return 0; +} + +int ngtcp2_ksl_remove(ngtcp2_ksl *ksl, ngtcp2_ksl_it *it, + const ngtcp2_ksl_key *key) { + ngtcp2_ksl_blk *blk = ksl->head; + ngtcp2_ksl_node *node; + size_t i; + + if (!blk) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + if (!blk->leaf && blk->n == 2 && + ngtcp2_ksl_nth_node(ksl, blk, 0)->blk->n == NGTCP2_KSL_MIN_NBLK && + ngtcp2_ksl_nth_node(ksl, blk, 1)->blk->n == NGTCP2_KSL_MIN_NBLK) { + blk = ksl_merge_node(ksl, blk, 0); + } + + for (;;) { + i = ksl_search(ksl, blk, key, ksl->compar); + + if (i == blk->n) { + if (it) { + *it = ngtcp2_ksl_end(ksl); + } + + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + if (blk->leaf) { + if (ksl->compar(key, ngtcp2_ksl_nth_node(ksl, blk, i)->key)) { + if (it) { + *it = ngtcp2_ksl_end(ksl); + } + + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + ksl_remove_node(ksl, blk, i); + --ksl->n; + + if (it) { + if (blk->n == i && blk->next) { + ngtcp2_ksl_it_init(it, ksl, blk->next, 0); + } else { + ngtcp2_ksl_it_init(it, ksl, blk, i); + } + } + + return 0; + } + + node = ngtcp2_ksl_nth_node(ksl, blk, i); + + if (node->blk->n > NGTCP2_KSL_MIN_NBLK) { + blk = node->blk; + continue; + } + + assert(node->blk->n == NGTCP2_KSL_MIN_NBLK); + + if (i + 1 < blk->n && + ngtcp2_ksl_nth_node(ksl, blk, i + 1)->blk->n > NGTCP2_KSL_MIN_NBLK) { + ksl_shift_left(ksl, blk, i + 1); + blk = node->blk; + + continue; + } + + if (i > 0 && + ngtcp2_ksl_nth_node(ksl, blk, i - 1)->blk->n > NGTCP2_KSL_MIN_NBLK) { + ksl_shift_right(ksl, blk, i - 1); + blk = node->blk; + + continue; + } + + if (i + 1 < blk->n) { + blk = ksl_merge_node(ksl, blk, i); + continue; + } + + assert(i > 0); + + blk = ksl_merge_node(ksl, blk, i - 1); + } +} + +ngtcp2_ksl_it ngtcp2_ksl_lower_bound(const ngtcp2_ksl *ksl, + const ngtcp2_ksl_key *key) { + return ngtcp2_ksl_lower_bound_compar(ksl, key, ksl->compar); +} + +ngtcp2_ksl_it ngtcp2_ksl_lower_bound_compar(const ngtcp2_ksl *ksl, + const ngtcp2_ksl_key *key, + ngtcp2_ksl_compar compar) { + ngtcp2_ksl_blk *blk = ksl->head; + ngtcp2_ksl_it it; + size_t i; + + if (!blk) { + ngtcp2_ksl_it_init(&it, ksl, &null_blk, 0); + return it; + } + + for (;;) { + i = ksl_search(ksl, blk, key, compar); + + if (blk->leaf) { + if (i == blk->n && blk->next) { + blk = blk->next; + i = 0; + } + + ngtcp2_ksl_it_init(&it, ksl, blk, i); + + return it; + } + + if (i == blk->n) { + /* This happens if descendant has smaller key. Fast forward to + find last node in this subtree. */ + for (; !blk->leaf; blk = ngtcp2_ksl_nth_node(ksl, blk, blk->n - 1)->blk) + ; + + if (blk->next) { + blk = blk->next; + i = 0; + } else { + i = blk->n; + } + + ngtcp2_ksl_it_init(&it, ksl, blk, i); + + return it; + } + + blk = ngtcp2_ksl_nth_node(ksl, blk, i)->blk; + } +} + +void ngtcp2_ksl_update_key(ngtcp2_ksl *ksl, const ngtcp2_ksl_key *old_key, + const ngtcp2_ksl_key *new_key) { + ngtcp2_ksl_blk *blk = ksl->head; + ngtcp2_ksl_node *node; + size_t i; + + assert(ksl->head); + + for (;;) { + i = ksl_search(ksl, blk, old_key, ksl->compar); + + assert(i < blk->n); + node = ngtcp2_ksl_nth_node(ksl, blk, i); + + if (blk->leaf) { + assert(key_equal(ksl->compar, (ngtcp2_ksl_key *)node->key, old_key)); + ksl_node_set_key(ksl, node, new_key); + + return; + } + + if (key_equal(ksl->compar, (ngtcp2_ksl_key *)node->key, old_key) || + ksl->compar((ngtcp2_ksl_key *)node->key, new_key)) { + ksl_node_set_key(ksl, node, new_key); + } + + blk = node->blk; + } +} + +size_t ngtcp2_ksl_len(const ngtcp2_ksl *ksl) { return ksl->n; } + +void ngtcp2_ksl_clear(ngtcp2_ksl *ksl) { + if (!ksl->head) { + return; + } + +#ifdef NOMEMPOOL + ksl_free_blk(ksl, ksl->head); +#endif /* defined(NOMEMPOOL) */ + + ksl->front = ksl->back = ksl->head = NULL; + ksl->n = 0; + + ngtcp2_objalloc_clear(&ksl->blkalloc); +} + +#ifndef WIN32 +static void ksl_print(const ngtcp2_ksl *ksl, ngtcp2_ksl_blk *blk, + size_t level) { + size_t i; + ngtcp2_ksl_node *node; + + fprintf(stderr, "LV=%zu n=%u\n", level, blk->n); + + if (blk->leaf) { + for (i = 0; i < blk->n; ++i) { + node = ngtcp2_ksl_nth_node(ksl, blk, i); + fprintf(stderr, " %" PRId64, *(int64_t *)(void *)node->key); + } + + fprintf(stderr, "\n"); + + return; + } + + for (i = 0; i < blk->n; ++i) { + ksl_print(ksl, ngtcp2_ksl_nth_node(ksl, blk, i)->blk, level + 1); + } +} + +void ngtcp2_ksl_print(const ngtcp2_ksl *ksl) { + if (!ksl->head) { + return; + } + + ksl_print(ksl, ksl->head, 0); +} +#endif /* !defined(WIN32) */ + +ngtcp2_ksl_it ngtcp2_ksl_begin(const ngtcp2_ksl *ksl) { + ngtcp2_ksl_it it; + + if (ksl->head) { + ngtcp2_ksl_it_init(&it, ksl, ksl->front, 0); + } else { + ngtcp2_ksl_it_init(&it, ksl, &null_blk, 0); + } + + return it; +} + +ngtcp2_ksl_it ngtcp2_ksl_end(const ngtcp2_ksl *ksl) { + ngtcp2_ksl_it it; + + if (ksl->head) { + ngtcp2_ksl_it_init(&it, ksl, ksl->back, ksl->back->n); + } else { + ngtcp2_ksl_it_init(&it, ksl, &null_blk, 0); + } + + return it; +} + +void ngtcp2_ksl_it_init(ngtcp2_ksl_it *it, const ngtcp2_ksl *ksl, + ngtcp2_ksl_blk *blk, size_t i) { + it->ksl = ksl; + it->blk = blk; + it->i = i; +} + +void ngtcp2_ksl_it_prev(ngtcp2_ksl_it *it) { + assert(!ngtcp2_ksl_it_begin(it)); + + if (it->i == 0) { + it->blk = it->blk->prev; + it->i = it->blk->n - 1; + } else { + --it->i; + } +} + +int ngtcp2_ksl_it_begin(const ngtcp2_ksl_it *it) { + return it->i == 0 && it->blk->prev == NULL; +} + +int ngtcp2_ksl_range_compar(const ngtcp2_ksl_key *lhs, + const ngtcp2_ksl_key *rhs) { + const ngtcp2_range *a = lhs, *b = rhs; + return a->begin < b->begin; +} + +int ngtcp2_ksl_range_exclusive_compar(const ngtcp2_ksl_key *lhs, + const ngtcp2_ksl_key *rhs) { + const ngtcp2_range *a = lhs, *b = rhs; + return a->begin < b->begin && !(ngtcp2_max_uint64(a->begin, b->begin) < + ngtcp2_min_uint64(a->end, b->end)); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_ksl.h b/contrib/libs/ngtcp2/lib/ngtcp2_ksl.h new file mode 100644 index 0000000000..d8374b9b5b --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_ksl.h @@ -0,0 +1,349 @@ +/* + * ngtcp2 + * + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_KSL_H +#define NGTCP2_KSL_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <stdlib.h> + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_objalloc.h" + +#define NGTCP2_KSL_DEGR 16 +/* NGTCP2_KSL_MAX_NBLK is the maximum number of nodes which a single + block can contain. */ +#define NGTCP2_KSL_MAX_NBLK (2 * NGTCP2_KSL_DEGR - 1) +/* NGTCP2_KSL_MIN_NBLK is the minimum number of nodes which a single + block other than root must contain. */ +#define NGTCP2_KSL_MIN_NBLK (NGTCP2_KSL_DEGR - 1) + +/* + * ngtcp2_ksl_key represents key in ngtcp2_ksl. + */ +typedef void ngtcp2_ksl_key; + +typedef struct ngtcp2_ksl_node ngtcp2_ksl_node; + +typedef struct ngtcp2_ksl_blk ngtcp2_ksl_blk; + +/* + * ngtcp2_ksl_node is a node which contains either ngtcp2_ksl_blk or + * opaque data. If a node is an internal node, it contains + * ngtcp2_ksl_blk. Otherwise, it has data. The key is stored at the + * location starting at key. + */ +struct ngtcp2_ksl_node { + union { + ngtcp2_ksl_blk *blk; + void *data; + }; + union { + uint64_t align; + /* key is a buffer to include key associated to this node. + Because the length of key is unknown until ngtcp2_ksl_init is + called, the actual buffer will be allocated after this + field. */ + uint8_t key[1]; + }; +}; + +/* + * ngtcp2_ksl_blk contains ngtcp2_ksl_node objects. + */ +struct ngtcp2_ksl_blk { + union { + struct { + /* next points to the next block if leaf field is nonzero. */ + ngtcp2_ksl_blk *next; + /* prev points to the previous block if leaf field is + nonzero. */ + ngtcp2_ksl_blk *prev; + /* n is the number of nodes this object contains in nodes. */ + uint32_t n; + /* leaf is nonzero if this block contains leaf nodes. */ + uint32_t leaf; + union { + uint64_t align; + /* nodes is a buffer to contain NGTCP2_KSL_MAX_NBLK + ngtcp2_ksl_node objects. Because ngtcp2_ksl_node object is + allocated along with the additional variable length key + storage, the size of buffer is unknown until ngtcp2_ksl_init is + called. */ + uint8_t nodes[1]; + }; + }; + + ngtcp2_opl_entry oplent; + }; +}; + +ngtcp2_objalloc_decl(ksl_blk, ngtcp2_ksl_blk, oplent); + +/* + * ngtcp2_ksl_compar is a function type which returns nonzero if key + * |lhs| should be placed before |rhs|. It returns 0 otherwise. + */ +typedef int (*ngtcp2_ksl_compar)(const ngtcp2_ksl_key *lhs, + const ngtcp2_ksl_key *rhs); + +typedef struct ngtcp2_ksl ngtcp2_ksl; + +typedef struct ngtcp2_ksl_it ngtcp2_ksl_it; + +/* + * ngtcp2_ksl_it is a bidirectional iterator to iterate nodes. + */ +struct ngtcp2_ksl_it { + const ngtcp2_ksl *ksl; + ngtcp2_ksl_blk *blk; + size_t i; +}; + +/* + * ngtcp2_ksl is a deterministic paged skip list. + */ +struct ngtcp2_ksl { + ngtcp2_objalloc blkalloc; + /* head points to the root block. */ + ngtcp2_ksl_blk *head; + /* front points to the first leaf block. */ + ngtcp2_ksl_blk *front; + /* back points to the last leaf block. */ + ngtcp2_ksl_blk *back; + ngtcp2_ksl_compar compar; + /* n is the number of elements stored. */ + size_t n; + /* keylen is the size of key */ + size_t keylen; + /* nodelen is the actual size of ngtcp2_ksl_node including key + storage. */ + size_t nodelen; +}; + +/* + * ngtcp2_ksl_init initializes |ksl|. |compar| specifies compare + * function. |keylen| is the length of key and must be at least + * sizeof(uint64_t). + */ +void ngtcp2_ksl_init(ngtcp2_ksl *ksl, ngtcp2_ksl_compar compar, size_t keylen, + const ngtcp2_mem *mem); + +/* + * ngtcp2_ksl_free frees resources allocated for |ksl|. If |ksl| is + * NULL, this function does nothing. It does not free the memory + * region pointed by |ksl| itself. + */ +void ngtcp2_ksl_free(ngtcp2_ksl *ksl); + +/* + * ngtcp2_ksl_insert inserts |key| with its associated |data|. On + * successful insertion, the iterator points to the inserted node is + * stored in |*it| if |it| is not NULL. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + * NGTCP2_ERR_INVALID_ARGUMENT + * |key| already exists. + */ +int ngtcp2_ksl_insert(ngtcp2_ksl *ksl, ngtcp2_ksl_it *it, + const ngtcp2_ksl_key *key, void *data); + +/* + * ngtcp2_ksl_remove removes the |key| from |ksl|. + * + * This function assigns the iterator to |*it|, which points to the + * node which is located at the right next of the removed node if |it| + * is not NULL. If |key| is not found, no deletion takes place and + * the return value of ngtcp2_ksl_end(ksl) is assigned to |*it| if + * |it| is not NULL. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_INVALID_ARGUMENT + * |key| does not exist. + */ +int ngtcp2_ksl_remove(ngtcp2_ksl *ksl, ngtcp2_ksl_it *it, + const ngtcp2_ksl_key *key); + +/* + * ngtcp2_ksl_remove_hint removes the |key| from |ksl|. |hint| must + * point to the same node denoted by |key|. |hint| is used to remove + * a node efficiently in some cases. Other than that, it behaves + * exactly like ngtcp2_ksl_remove. |it| and |hint| can point to the + * same object. + */ +int ngtcp2_ksl_remove_hint(ngtcp2_ksl *ksl, ngtcp2_ksl_it *it, + const ngtcp2_ksl_it *hint, + const ngtcp2_ksl_key *key); + +/* + * ngtcp2_ksl_lower_bound returns the iterator which points to the + * first node which has the key which is equal to |key| or the last + * node which satisfies !compar(&node->key, key). If there is no such + * node, it returns the iterator which satisfies ngtcp2_ksl_it_end(it) + * != 0. + */ +ngtcp2_ksl_it ngtcp2_ksl_lower_bound(const ngtcp2_ksl *ksl, + const ngtcp2_ksl_key *key); + +/* + * ngtcp2_ksl_lower_bound_compar works like ngtcp2_ksl_lower_bound, + * but it takes custom function |compar| to do lower bound search. + */ +ngtcp2_ksl_it ngtcp2_ksl_lower_bound_compar(const ngtcp2_ksl *ksl, + const ngtcp2_ksl_key *key, + ngtcp2_ksl_compar compar); + +/* + * ngtcp2_ksl_update_key replaces the key of nodes which has |old_key| + * with |new_key|. |new_key| must be strictly greater than the + * previous node and strictly smaller than the next node. + */ +void ngtcp2_ksl_update_key(ngtcp2_ksl *ksl, const ngtcp2_ksl_key *old_key, + const ngtcp2_ksl_key *new_key); + +/* + * ngtcp2_ksl_begin returns the iterator which points to the first + * node. If there is no node in |ksl|, it returns the iterator which + * satisfies both ngtcp2_ksl_it_begin(it) != 0 and + * ngtcp2_ksl_it_end(it) != 0. + */ +ngtcp2_ksl_it ngtcp2_ksl_begin(const ngtcp2_ksl *ksl); + +/* + * ngtcp2_ksl_end returns the iterator which points to the node + * following the last node. The returned object satisfies + * ngtcp2_ksl_it_end(). If there is no node in |ksl|, it returns the + * iterator which satisfies ngtcp2_ksl_it_begin(it) != 0 and + * ngtcp2_ksl_it_end(it) != 0. + */ +ngtcp2_ksl_it ngtcp2_ksl_end(const ngtcp2_ksl *ksl); + +/* + * ngtcp2_ksl_len returns the number of elements stored in |ksl|. + */ +size_t ngtcp2_ksl_len(const ngtcp2_ksl *ksl); + +/* + * ngtcp2_ksl_clear removes all elements stored in |ksl|. + */ +void ngtcp2_ksl_clear(ngtcp2_ksl *ksl); + +/* + * ngtcp2_ksl_nth_node returns the |n|th node under |blk|. + */ +#define ngtcp2_ksl_nth_node(KSL, BLK, N) \ + ((ngtcp2_ksl_node *)(void *)((BLK)->nodes + (KSL)->nodelen * (N))) + +#ifndef WIN32 +/* + * ngtcp2_ksl_print prints its internal state in stderr. It assumes + * that the key is of type int64_t. This function should be used for + * the debugging purpose only. + */ +void ngtcp2_ksl_print(const ngtcp2_ksl *ksl); +#endif /* !defined(WIN32) */ + +/* + * ngtcp2_ksl_it_init initializes |it|. + */ +void ngtcp2_ksl_it_init(ngtcp2_ksl_it *it, const ngtcp2_ksl *ksl, + ngtcp2_ksl_blk *blk, size_t i); + +/* + * ngtcp2_ksl_it_get returns the data associated to the node which + * |it| points to. It is undefined to call this function when + * ngtcp2_ksl_it_end(it) returns nonzero. + */ +#define ngtcp2_ksl_it_get(IT) \ + ngtcp2_ksl_nth_node((IT)->ksl, (IT)->blk, (IT)->i)->data + +/* + * ngtcp2_ksl_it_next advances the iterator by one. It is undefined + * if this function is called when ngtcp2_ksl_it_end(it) returns + * nonzero. + */ +#define ngtcp2_ksl_it_next(IT) \ + (++(IT)->i == (IT)->blk->n && (IT)->blk->next \ + ? ((IT)->blk = (IT)->blk->next, (IT)->i = 0) \ + : 0) + +/* + * ngtcp2_ksl_it_prev moves backward the iterator by one. It is + * undefined if this function is called when ngtcp2_ksl_it_begin(it) + * returns nonzero. + */ +void ngtcp2_ksl_it_prev(ngtcp2_ksl_it *it); + +/* + * ngtcp2_ksl_it_end returns nonzero if |it| points to the one beyond + * the last node. + */ +#define ngtcp2_ksl_it_end(IT) \ + ((IT)->blk->n == (IT)->i && (IT)->blk->next == NULL) + +/* + * ngtcp2_ksl_it_begin returns nonzero if |it| points to the first + * node. |it| might satisfy both ngtcp2_ksl_it_begin(it) != 0 and + * ngtcp2_ksl_it_end(it) != 0 if the skip list has no node. + */ +int ngtcp2_ksl_it_begin(const ngtcp2_ksl_it *it); + +/* + * ngtcp2_ksl_key returns the key of the node which |it| points to. + * It is undefined to call this function when ngtcp2_ksl_it_end(it) + * returns nonzero. + */ +#define ngtcp2_ksl_it_key(IT) \ + ((ngtcp2_ksl_key *)ngtcp2_ksl_nth_node((IT)->ksl, (IT)->blk, (IT)->i)->key) + +/* + * ngtcp2_ksl_range_compar is an implementation of ngtcp2_ksl_compar. + * lhs->ptr and rhs->ptr must point to ngtcp2_range object and the + * function returns nonzero if (const ngtcp2_range *)(lhs->ptr)->begin + * < (const ngtcp2_range *)(rhs->ptr)->begin. + */ +int ngtcp2_ksl_range_compar(const ngtcp2_ksl_key *lhs, + const ngtcp2_ksl_key *rhs); + +/* + * ngtcp2_ksl_range_exclusive_compar is an implementation of + * ngtcp2_ksl_compar. lhs->ptr and rhs->ptr must point to + * ngtcp2_range object and the function returns nonzero if (const + * ngtcp2_range *)(lhs->ptr)->begin < (const ngtcp2_range + * *)(rhs->ptr)->begin and the 2 ranges do not intersect. + */ +int ngtcp2_ksl_range_exclusive_compar(const ngtcp2_ksl_key *lhs, + const ngtcp2_ksl_key *rhs); + +#endif /* !defined(NGTCP2_KSL_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_log.c b/contrib/libs/ngtcp2/lib/ngtcp2_log.c new file mode 100644 index 0000000000..fc4eb44351 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_log.c @@ -0,0 +1,834 @@ +/* + * ngtcp2 + * + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_log.h" + +#include <stdio.h> +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif /* defined(HAVE_UNISTD_H) */ +#include <assert.h> +#include <string.h> + +#include "ngtcp2_str.h" +#include "ngtcp2_vec.h" +#include "ngtcp2_macro.h" +#include "ngtcp2_conv.h" +#include "ngtcp2_unreachable.h" +#include "ngtcp2_net.h" + +void ngtcp2_log_init(ngtcp2_log *log, const ngtcp2_cid *scid, + ngtcp2_printf log_printf, ngtcp2_tstamp ts, + void *user_data) { + if (scid) { + ngtcp2_encode_hex(log->scid, scid->data, scid->datalen); + } else { + log->scid[0] = '\0'; + } + log->log_printf = log_printf; + log->events = 0xff; + log->ts = log->last_ts = ts; + log->user_data = user_data; +} + +/* + * # Log header + * + * <LEVEL><TIMESTAMP> <SCID> <EVENT> + * + * <LEVEL>: + * Log level. I=Info, W=Warning, E=Error + * + * <TIMESTAMP>: + * Timestamp relative to ngtcp2_log.ts field in milliseconds + * resolution. + * + * <SCID>: + * Source Connection ID in hex string. + * + * <EVENT>: + * Event. See ngtcp2_log_event. + * + * # Frame event + * + * <DIR> <PKN> <PKTNAME> <FRAMENAME>(<FRAMETYPE>) + * + * <DIR>: + * Flow direction. tx=transmission, rx=reception + * + * <PKN>: + * Packet number. + * + * <PKTNAME>: + * Packet name. (e.g., Initial, Handshake, 1RTT) + * + * <FRAMENAME>: + * Frame name. (e.g., STREAM, ACK, PING) + * + * <FRAMETYPE>: + * Frame type in hex string. + */ + +#define NGTCP2_LOG_BUFLEN 4096 + +/* TODO Split second and remaining fraction with comma */ +#define NGTCP2_LOG_HD "I%08" PRIu64 " 0x%s %s" +#define NGTCP2_LOG_PKT NGTCP2_LOG_HD " %s %" PRId64 " %s" +#define NGTCP2_LOG_TP NGTCP2_LOG_HD " remote transport_parameters" + +#define NGTCP2_LOG_FRM_HD_FIELDS(DIR) \ + timestamp_cast(log->last_ts - log->ts), (const char *)log->scid, "frm", \ + (DIR), hd->pkt_num, strpkttype(hd) + +#define NGTCP2_LOG_PKT_HD_FIELDS(DIR) \ + timestamp_cast(log->last_ts - log->ts), (const char *)log->scid, "pkt", \ + (DIR), hd->pkt_num, strpkttype(hd) + +#define NGTCP2_LOG_TP_HD_FIELDS \ + timestamp_cast(log->last_ts - log->ts), (const char *)log->scid, "cry" + +static const char *strerrorcode(uint64_t error_code) { + switch (error_code) { + case NGTCP2_NO_ERROR: + return "NO_ERROR"; + case NGTCP2_INTERNAL_ERROR: + return "INTERNAL_ERROR"; + case NGTCP2_CONNECTION_REFUSED: + return "CONNECTION_REFUSED"; + case NGTCP2_FLOW_CONTROL_ERROR: + return "FLOW_CONTROL_ERROR"; + case NGTCP2_STREAM_LIMIT_ERROR: + return "STREAM_LIMIT_ERROR"; + case NGTCP2_STREAM_STATE_ERROR: + return "STREAM_STATE_ERROR"; + case NGTCP2_FINAL_SIZE_ERROR: + return "FINAL_SIZE_ERROR"; + case NGTCP2_FRAME_ENCODING_ERROR: + return "FRAME_ENCODING_ERROR"; + case NGTCP2_TRANSPORT_PARAMETER_ERROR: + return "TRANSPORT_PARAMETER_ERROR"; + case NGTCP2_CONNECTION_ID_LIMIT_ERROR: + return "CONNECTION_ID_LIMIT_ERROR"; + case NGTCP2_PROTOCOL_VIOLATION: + return "PROTOCOL_VIOLATION"; + case NGTCP2_INVALID_TOKEN: + return "INVALID_TOKEN"; + case NGTCP2_APPLICATION_ERROR: + return "APPLICATION_ERROR"; + case NGTCP2_CRYPTO_BUFFER_EXCEEDED: + return "CRYPTO_BUFFER_EXCEEDED"; + case NGTCP2_KEY_UPDATE_ERROR: + return "KEY_UPDATE_ERROR"; + case NGTCP2_VERSION_NEGOTIATION_ERROR: + return "VERSION_NEGOTIATION_ERROR"; + default: + if (0x100u <= error_code && error_code <= 0x1ffu) { + return "CRYPTO_ERROR"; + } + return "(unknown)"; + } +} + +static const char *strapperrorcode(uint64_t app_error_code) { + (void)app_error_code; + return "(unknown)"; +} + +static const char *strpkttype_long(uint8_t type) { + switch (type) { + case NGTCP2_PKT_INITIAL: + return "Initial"; + case NGTCP2_PKT_RETRY: + return "Retry"; + case NGTCP2_PKT_HANDSHAKE: + return "Handshake"; + case NGTCP2_PKT_0RTT: + return "0RTT"; + default: + return "(unknown)"; + } +} + +static const char *strpkttype(const ngtcp2_pkt_hd *hd) { + if (hd->flags & NGTCP2_PKT_FLAG_LONG_FORM) { + return strpkttype_long(hd->type); + } + + switch (hd->type) { + case NGTCP2_PKT_VERSION_NEGOTIATION: + return "VN"; + case NGTCP2_PKT_STATELESS_RESET: + return "SR"; + case NGTCP2_PKT_1RTT: + return "1RTT"; + default: + return "(unknown)"; + } +} + +static const char *strpkttype_type_flags(uint8_t type, uint8_t flags) { + ngtcp2_pkt_hd hd = {0}; + + hd.type = type; + hd.flags = flags; + + return strpkttype(&hd); +} + +static const char *strevent(ngtcp2_log_event ev) { + switch (ev) { + case NGTCP2_LOG_EVENT_CON: + return "con"; + case NGTCP2_LOG_EVENT_PKT: + return "pkt"; + case NGTCP2_LOG_EVENT_FRM: + return "frm"; + case NGTCP2_LOG_EVENT_LDC: + return "ldc"; + case NGTCP2_LOG_EVENT_CRY: + return "cry"; + case NGTCP2_LOG_EVENT_PTV: + return "ptv"; + case NGTCP2_LOG_EVENT_CCA: + return "cca"; + case NGTCP2_LOG_EVENT_NONE: + default: + return "non"; + } +} + +static uint64_t timestamp_cast(uint64_t ns) { return ns / NGTCP2_MILLISECONDS; } + +static void log_fr_stream(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_stream *fr, const char *dir) { + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " STREAM(0x%02" PRIx64 ") id=0x%" PRIx64 + " fin=%d offset=%" PRIu64 " len=%" PRIu64 " uni=%d"), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type | fr->flags, fr->stream_id, fr->fin, + fr->offset, ngtcp2_vec_len(fr->data, fr->datacnt), + (fr->stream_id & 0x2) != 0); +} + +static void log_fr_ack(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_ack *fr, const char *dir) { + int64_t largest_ack, min_ack; + size_t i; + + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " ACK(0x%02" PRIx64 ") largest_ack=%" PRId64 + " ack_delay=%" PRIu64 "(%" PRIu64 ") ack_range_count=%zu"), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->largest_ack, + fr->ack_delay_unscaled / NGTCP2_MILLISECONDS, fr->ack_delay, fr->rangecnt); + + largest_ack = fr->largest_ack; + min_ack = fr->largest_ack - (int64_t)fr->first_ack_range; + + log->log_printf(log->user_data, + (NGTCP2_LOG_PKT " ACK(0x%02" PRIx64 ") range=[%" PRId64 + "..%" PRId64 "] len=%" PRIu64), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, largest_ack, min_ack, + fr->first_ack_range); + + for (i = 0; i < fr->rangecnt; ++i) { + const ngtcp2_ack_range *range = &fr->ranges[i]; + largest_ack = min_ack - (int64_t)range->gap - 2; + min_ack = largest_ack - (int64_t)range->len; + log->log_printf(log->user_data, + (NGTCP2_LOG_PKT " ACK(0x%02" PRIx64 ") range=[%" PRId64 + "..%" PRId64 "] gap=%" PRIu64 + " len=%" PRIu64), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, largest_ack, + min_ack, range->gap, range->len); + } + + if (fr->type == NGTCP2_FRAME_ACK_ECN) { + log->log_printf(log->user_data, + (NGTCP2_LOG_PKT " ACK(0x%02" PRIx64 ") ect0=%" PRIu64 + " ect1=%" PRIu64 " ce=%" PRIu64), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->ecn.ect0, + fr->ecn.ect1, fr->ecn.ce); + } +} + +static void log_fr_padding(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_padding *fr, const char *dir) { + log->log_printf(log->user_data, + (NGTCP2_LOG_PKT " PADDING(0x%02" PRIx64 ") len=%zu"), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->len); +} + +static void log_fr_reset_stream(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_reset_stream *fr, + const char *dir) { + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " RESET_STREAM(0x%02" PRIx64 ") id=0x%" PRIx64 + " app_error_code=%s(0x%" PRIx64 ") final_size=%" PRIu64), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->stream_id, + strapperrorcode(fr->app_error_code), fr->app_error_code, fr->final_size); +} + +static void log_fr_connection_close(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_connection_close *fr, + const char *dir) { + char reason[256]; + size_t reasonlen = ngtcp2_min_size(sizeof(reason) - 1, fr->reasonlen); + + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " CONNECTION_CLOSE(0x%02" PRIx64 + ") error_code=%s(0x%" PRIx64 ") " + "frame_type=%" PRIx64 " reason_len=%zu reason=[%s]"), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, + fr->type == NGTCP2_FRAME_CONNECTION_CLOSE ? strerrorcode(fr->error_code) + : strapperrorcode(fr->error_code), + fr->error_code, fr->frame_type, fr->reasonlen, + ngtcp2_encode_printable_ascii(reason, fr->reason, reasonlen)); +} + +static void log_fr_max_data(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_max_data *fr, const char *dir) { + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " MAX_DATA(0x%02" PRIx64 ") max_data=%" PRIu64), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->max_data); +} + +static void log_fr_max_stream_data(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_max_stream_data *fr, + const char *dir) { + log->log_printf(log->user_data, + (NGTCP2_LOG_PKT " MAX_STREAM_DATA(0x%02" PRIx64 + ") id=0x%" PRIx64 + " max_stream_data=%" PRIu64), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->stream_id, + fr->max_stream_data); +} + +static void log_fr_max_streams(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_max_streams *fr, const char *dir) { + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " MAX_STREAMS(0x%02" PRIx64 ") max_streams=%" PRIu64), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->max_streams); +} + +static void log_fr_ping(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_ping *fr, const char *dir) { + log->log_printf(log->user_data, (NGTCP2_LOG_PKT " PING(0x%02" PRIx64 ")"), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type); +} + +static void log_fr_data_blocked(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_data_blocked *fr, + const char *dir) { + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " DATA_BLOCKED(0x%02" PRIx64 ") offset=%" PRIu64), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->offset); +} + +static void log_fr_stream_data_blocked(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_stream_data_blocked *fr, + const char *dir) { + log->log_printf(log->user_data, + (NGTCP2_LOG_PKT " STREAM_DATA_BLOCKED(0x%02" PRIx64 + ") id=0x%" PRIx64 " offset=%" PRIu64), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->stream_id, + fr->offset); +} + +static void log_fr_streams_blocked(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_streams_blocked *fr, + const char *dir) { + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " STREAMS_BLOCKED(0x%02" PRIx64 ") max_streams=%" PRIu64), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->max_streams); +} + +static void log_fr_new_connection_id(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_new_connection_id *fr, + const char *dir) { + uint8_t buf[sizeof(fr->stateless_reset_token) * 2 + 1]; + uint8_t cid[sizeof(fr->cid.data) * 2 + 1]; + + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " NEW_CONNECTION_ID(0x%02" PRIx64 ") seq=%" PRIu64 + " cid=0x%s retire_prior_to=%" PRIu64 + " stateless_reset_token=0x%s"), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->seq, + (const char *)ngtcp2_encode_hex(cid, fr->cid.data, fr->cid.datalen), + fr->retire_prior_to, + (const char *)ngtcp2_encode_hex(buf, fr->stateless_reset_token, + sizeof(fr->stateless_reset_token))); +} + +static void log_fr_stop_sending(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_stop_sending *fr, + const char *dir) { + log->log_printf(log->user_data, + (NGTCP2_LOG_PKT " STOP_SENDING(0x%02" PRIx64 ") id=0x%" PRIx64 + " app_error_code=%s(0x%" PRIx64 ")"), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->stream_id, + strapperrorcode(fr->app_error_code), fr->app_error_code); +} + +static void log_fr_path_challenge(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_path_challenge *fr, + const char *dir) { + uint8_t buf[sizeof(fr->data) * 2 + 1]; + + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " PATH_CHALLENGE(0x%02" PRIx64 ") data=0x%s"), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, + (const char *)ngtcp2_encode_hex(buf, fr->data, sizeof(fr->data))); +} + +static void log_fr_path_response(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_path_response *fr, + const char *dir) { + uint8_t buf[sizeof(fr->data) * 2 + 1]; + + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " PATH_RESPONSE(0x%02" PRIx64 ") data=0x%s"), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, + (const char *)ngtcp2_encode_hex(buf, fr->data, sizeof(fr->data))); +} + +static void log_fr_crypto(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_stream *fr, const char *dir) { + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " CRYPTO(0x%02" PRIx64 ") offset=%" PRIu64 " len=%" PRIu64), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->offset, + ngtcp2_vec_len(fr->data, fr->datacnt)); +} + +static void log_fr_new_token(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_new_token *fr, const char *dir) { + /* Show at most first 64 bytes of token. If token is longer than 64 + bytes, log first 64 bytes and then append "*" */ + uint8_t buf[128 + 1 + 1]; + uint8_t *p; + + if (fr->tokenlen > 64) { + p = ngtcp2_encode_hex(buf, fr->token, 64); + p[128] = '*'; + p[129] = '\0'; + } else { + p = ngtcp2_encode_hex(buf, fr->token, fr->tokenlen); + } + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " NEW_TOKEN(0x%02" PRIx64 ") token=0x%s len=%zu"), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, (const char *)p, fr->tokenlen); +} + +static void log_fr_retire_connection_id(ngtcp2_log *log, + const ngtcp2_pkt_hd *hd, + const ngtcp2_retire_connection_id *fr, + const char *dir) { + log->log_printf( + log->user_data, + (NGTCP2_LOG_PKT " RETIRE_CONNECTION_ID(0x%02" PRIx64 ") seq=%" PRIu64), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, fr->seq); +} + +static void log_fr_handshake_done(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_handshake_done *fr, + const char *dir) { + log->log_printf(log->user_data, + (NGTCP2_LOG_PKT " HANDSHAKE_DONE(0x%02" PRIx64 ")"), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type); +} + +static void log_fr_datagram(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_datagram *fr, const char *dir) { + log->log_printf(log->user_data, + (NGTCP2_LOG_PKT " DATAGRAM(0x%02" PRIx64 ") len=%" PRIu64), + NGTCP2_LOG_FRM_HD_FIELDS(dir), fr->type, + ngtcp2_vec_len(fr->data, fr->datacnt)); +} + +static void log_fr(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_frame *fr, const char *dir) { + switch (fr->type) { + case NGTCP2_FRAME_STREAM: + log_fr_stream(log, hd, &fr->stream, dir); + break; + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + log_fr_ack(log, hd, &fr->ack, dir); + break; + case NGTCP2_FRAME_PADDING: + log_fr_padding(log, hd, &fr->padding, dir); + break; + case NGTCP2_FRAME_RESET_STREAM: + log_fr_reset_stream(log, hd, &fr->reset_stream, dir); + break; + case NGTCP2_FRAME_CONNECTION_CLOSE: + case NGTCP2_FRAME_CONNECTION_CLOSE_APP: + log_fr_connection_close(log, hd, &fr->connection_close, dir); + break; + case NGTCP2_FRAME_MAX_DATA: + log_fr_max_data(log, hd, &fr->max_data, dir); + break; + case NGTCP2_FRAME_MAX_STREAM_DATA: + log_fr_max_stream_data(log, hd, &fr->max_stream_data, dir); + break; + case NGTCP2_FRAME_MAX_STREAMS_BIDI: + case NGTCP2_FRAME_MAX_STREAMS_UNI: + log_fr_max_streams(log, hd, &fr->max_streams, dir); + break; + case NGTCP2_FRAME_PING: + log_fr_ping(log, hd, &fr->ping, dir); + break; + case NGTCP2_FRAME_DATA_BLOCKED: + log_fr_data_blocked(log, hd, &fr->data_blocked, dir); + break; + case NGTCP2_FRAME_STREAM_DATA_BLOCKED: + log_fr_stream_data_blocked(log, hd, &fr->stream_data_blocked, dir); + break; + case NGTCP2_FRAME_STREAMS_BLOCKED_BIDI: + case NGTCP2_FRAME_STREAMS_BLOCKED_UNI: + log_fr_streams_blocked(log, hd, &fr->streams_blocked, dir); + break; + case NGTCP2_FRAME_NEW_CONNECTION_ID: + log_fr_new_connection_id(log, hd, &fr->new_connection_id, dir); + break; + case NGTCP2_FRAME_STOP_SENDING: + log_fr_stop_sending(log, hd, &fr->stop_sending, dir); + break; + case NGTCP2_FRAME_PATH_CHALLENGE: + log_fr_path_challenge(log, hd, &fr->path_challenge, dir); + break; + case NGTCP2_FRAME_PATH_RESPONSE: + log_fr_path_response(log, hd, &fr->path_response, dir); + break; + case NGTCP2_FRAME_CRYPTO: + log_fr_crypto(log, hd, &fr->stream, dir); + break; + case NGTCP2_FRAME_NEW_TOKEN: + log_fr_new_token(log, hd, &fr->new_token, dir); + break; + case NGTCP2_FRAME_RETIRE_CONNECTION_ID: + log_fr_retire_connection_id(log, hd, &fr->retire_connection_id, dir); + break; + case NGTCP2_FRAME_HANDSHAKE_DONE: + log_fr_handshake_done(log, hd, &fr->handshake_done, dir); + break; + case NGTCP2_FRAME_DATAGRAM: + case NGTCP2_FRAME_DATAGRAM_LEN: + log_fr_datagram(log, hd, &fr->datagram, dir); + break; + default: + ngtcp2_unreachable(); + } +} + +void ngtcp2_log_rx_fr(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_frame *fr) { + if (!log->log_printf || !(log->events & NGTCP2_LOG_EVENT_FRM)) { + return; + } + + log_fr(log, hd, fr, "rx"); +} + +void ngtcp2_log_tx_fr(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_frame *fr) { + if (!log->log_printf || !(log->events & NGTCP2_LOG_EVENT_FRM)) { + return; + } + + log_fr(log, hd, fr, "tx"); +} + +void ngtcp2_log_rx_vn(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const uint32_t *sv, size_t nsv) { + size_t i; + + if (!log->log_printf || !(log->events & NGTCP2_LOG_EVENT_PKT)) { + return; + } + + for (i = 0; i < nsv; ++i) { + log->log_printf(log->user_data, (NGTCP2_LOG_PKT " v=0x%08x"), + NGTCP2_LOG_PKT_HD_FIELDS("rx"), sv[i]); + } +} + +void ngtcp2_log_rx_sr(ngtcp2_log *log, const ngtcp2_pkt_stateless_reset *sr) { + uint8_t buf[sizeof(sr->stateless_reset_token) * 2 + 1]; + ngtcp2_pkt_hd shd; + ngtcp2_pkt_hd *hd = &shd; + + if (!log->log_printf || !(log->events & NGTCP2_LOG_EVENT_PKT)) { + return; + } + + memset(&shd, 0, sizeof(shd)); + + shd.type = NGTCP2_PKT_STATELESS_RESET; + + log->log_printf( + log->user_data, (NGTCP2_LOG_PKT " token=0x%s randlen=%zu"), + NGTCP2_LOG_PKT_HD_FIELDS("rx"), + (const char *)ngtcp2_encode_hex(buf, sr->stateless_reset_token, + sizeof(sr->stateless_reset_token)), + sr->randlen); +} + +void ngtcp2_log_remote_tp(ngtcp2_log *log, + const ngtcp2_transport_params *params) { + uint8_t token[NGTCP2_STATELESS_RESET_TOKENLEN * 2 + 1]; + uint8_t addr[16 * 2 + 7 + 1]; + uint8_t cid[NGTCP2_MAX_CIDLEN * 2 + 1]; + size_t i; + const ngtcp2_sockaddr_in *sa_in; + const ngtcp2_sockaddr_in6 *sa_in6; + const uint8_t *p; + uint32_t version; + + if (!log->log_printf || !(log->events & NGTCP2_LOG_EVENT_CRY)) { + return; + } + + if (params->stateless_reset_token_present) { + log->log_printf( + log->user_data, (NGTCP2_LOG_TP " stateless_reset_token=0x%s"), + NGTCP2_LOG_TP_HD_FIELDS, + (const char *)ngtcp2_encode_hex(token, params->stateless_reset_token, + sizeof(params->stateless_reset_token))); + } + + if (params->preferred_addr_present) { + if (params->preferred_addr.ipv4_present) { + sa_in = ¶ms->preferred_addr.ipv4; + + log->log_printf(log->user_data, + (NGTCP2_LOG_TP " preferred_address.ipv4_addr=%s"), + NGTCP2_LOG_TP_HD_FIELDS, + (const char *)ngtcp2_encode_ipv4( + addr, (const uint8_t *)&sa_in->sin_addr)); + log->log_printf(log->user_data, + (NGTCP2_LOG_TP " preferred_address.ipv4_port=%u"), + NGTCP2_LOG_TP_HD_FIELDS, ngtcp2_ntohs(sa_in->sin_port)); + } + + if (params->preferred_addr.ipv6_present) { + sa_in6 = ¶ms->preferred_addr.ipv6; + + log->log_printf(log->user_data, + (NGTCP2_LOG_TP " preferred_address.ipv6_addr=%s"), + NGTCP2_LOG_TP_HD_FIELDS, + (const char *)ngtcp2_encode_ipv6( + addr, (const uint8_t *)&sa_in6->sin6_addr)); + log->log_printf(log->user_data, + (NGTCP2_LOG_TP " preferred_address.ipv6_port=%u"), + NGTCP2_LOG_TP_HD_FIELDS, ngtcp2_ntohs(sa_in6->sin6_port)); + } + + log->log_printf( + log->user_data, (NGTCP2_LOG_TP " preferred_address.cid=0x%s"), + NGTCP2_LOG_TP_HD_FIELDS, + (const char *)ngtcp2_encode_hex(cid, params->preferred_addr.cid.data, + params->preferred_addr.cid.datalen)); + log->log_printf( + log->user_data, + (NGTCP2_LOG_TP " preferred_address.stateless_reset_token=0x%s"), + NGTCP2_LOG_TP_HD_FIELDS, + (const char *)ngtcp2_encode_hex( + token, params->preferred_addr.stateless_reset_token, + sizeof(params->preferred_addr.stateless_reset_token))); + } + + if (params->original_dcid_present) { + log->log_printf( + log->user_data, + (NGTCP2_LOG_TP " original_destination_connection_id=0x%s"), + NGTCP2_LOG_TP_HD_FIELDS, + (const char *)ngtcp2_encode_hex(cid, params->original_dcid.data, + params->original_dcid.datalen)); + } + + if (params->retry_scid_present) { + log->log_printf( + log->user_data, (NGTCP2_LOG_TP " retry_source_connection_id=0x%s"), + NGTCP2_LOG_TP_HD_FIELDS, + (const char *)ngtcp2_encode_hex(cid, params->retry_scid.data, + params->retry_scid.datalen)); + } + + if (params->initial_scid_present) { + log->log_printf( + log->user_data, (NGTCP2_LOG_TP " initial_source_connection_id=0x%s"), + NGTCP2_LOG_TP_HD_FIELDS, + (const char *)ngtcp2_encode_hex(cid, params->initial_scid.data, + params->initial_scid.datalen)); + } + + log->log_printf( + log->user_data, + (NGTCP2_LOG_TP " initial_max_stream_data_bidi_local=%" PRIu64), + NGTCP2_LOG_TP_HD_FIELDS, params->initial_max_stream_data_bidi_local); + log->log_printf( + log->user_data, + (NGTCP2_LOG_TP " initial_max_stream_data_bidi_remote=%" PRIu64), + NGTCP2_LOG_TP_HD_FIELDS, params->initial_max_stream_data_bidi_remote); + log->log_printf(log->user_data, + (NGTCP2_LOG_TP " initial_max_stream_data_uni=%" PRIu64), + NGTCP2_LOG_TP_HD_FIELDS, params->initial_max_stream_data_uni); + log->log_printf(log->user_data, (NGTCP2_LOG_TP " initial_max_data=%" PRIu64), + NGTCP2_LOG_TP_HD_FIELDS, params->initial_max_data); + log->log_printf(log->user_data, + (NGTCP2_LOG_TP " initial_max_streams_bidi=%" PRIu64), + NGTCP2_LOG_TP_HD_FIELDS, params->initial_max_streams_bidi); + log->log_printf(log->user_data, + (NGTCP2_LOG_TP " initial_max_streams_uni=%" PRIu64), + NGTCP2_LOG_TP_HD_FIELDS, params->initial_max_streams_uni); + log->log_printf(log->user_data, (NGTCP2_LOG_TP " max_idle_timeout=%" PRIu64), + NGTCP2_LOG_TP_HD_FIELDS, + params->max_idle_timeout / NGTCP2_MILLISECONDS); + log->log_printf(log->user_data, + (NGTCP2_LOG_TP " max_udp_payload_size=%" PRIu64), + NGTCP2_LOG_TP_HD_FIELDS, params->max_udp_payload_size); + log->log_printf(log->user_data, + (NGTCP2_LOG_TP " ack_delay_exponent=%" PRIu64), + NGTCP2_LOG_TP_HD_FIELDS, params->ack_delay_exponent); + log->log_printf(log->user_data, (NGTCP2_LOG_TP " max_ack_delay=%" PRIu64), + NGTCP2_LOG_TP_HD_FIELDS, + params->max_ack_delay / NGTCP2_MILLISECONDS); + log->log_printf(log->user_data, + (NGTCP2_LOG_TP " active_connection_id_limit=%" PRIu64), + NGTCP2_LOG_TP_HD_FIELDS, params->active_connection_id_limit); + log->log_printf(log->user_data, + (NGTCP2_LOG_TP " disable_active_migration=%d"), + NGTCP2_LOG_TP_HD_FIELDS, params->disable_active_migration); + log->log_printf(log->user_data, + (NGTCP2_LOG_TP " max_datagram_frame_size=%" PRIu64), + NGTCP2_LOG_TP_HD_FIELDS, params->max_datagram_frame_size); + log->log_printf(log->user_data, (NGTCP2_LOG_TP " grease_quic_bit=%d"), + NGTCP2_LOG_TP_HD_FIELDS, params->grease_quic_bit); + + if (params->version_info_present) { + log->log_printf( + log->user_data, + (NGTCP2_LOG_TP " version_information.chosen_version=0x%08x"), + NGTCP2_LOG_TP_HD_FIELDS, params->version_info.chosen_version); + + assert(!(params->version_info.available_versionslen & 0x3)); + + for (i = 0, p = params->version_info.available_versions; + i < params->version_info.available_versionslen; + i += sizeof(uint32_t)) { + p = ngtcp2_get_uint32be(&version, p); + + log->log_printf( + log->user_data, + (NGTCP2_LOG_TP " version_information.available_versions[%zu]=0x%08x"), + NGTCP2_LOG_TP_HD_FIELDS, i >> 2, version); + } + } +} + +void ngtcp2_log_pkt_lost(ngtcp2_log *log, int64_t pkt_num, uint8_t type, + uint8_t flags, ngtcp2_tstamp sent_ts) { + if (!log->log_printf || !(log->events & NGTCP2_LOG_EVENT_LDC)) { + return; + } + + ngtcp2_log_info(log, NGTCP2_LOG_EVENT_LDC, + "pkn=%" PRId64 " lost type=%s sent_ts=%" PRIu64, pkt_num, + strpkttype_type_flags(type, flags), sent_ts); +} + +static void log_pkt_hd(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const char *dir) { + uint8_t dcid[sizeof(hd->dcid.data) * 2 + 1]; + uint8_t scid[sizeof(hd->scid.data) * 2 + 1]; + + if (!log->log_printf || !(log->events & NGTCP2_LOG_EVENT_PKT)) { + return; + } + + if (hd->type == NGTCP2_PKT_1RTT) { + ngtcp2_log_info( + log, NGTCP2_LOG_EVENT_PKT, "%s pkn=%" PRId64 " dcid=0x%s type=%s k=%d", + dir, hd->pkt_num, + (const char *)ngtcp2_encode_hex(dcid, hd->dcid.data, hd->dcid.datalen), + strpkttype(hd), (hd->flags & NGTCP2_PKT_FLAG_KEY_PHASE) != 0); + } else { + ngtcp2_log_info( + log, NGTCP2_LOG_EVENT_PKT, + "%s pkn=%" PRId64 " dcid=0x%s scid=0x%s version=0x%08x type=%s len=%zu", + dir, hd->pkt_num, + (const char *)ngtcp2_encode_hex(dcid, hd->dcid.data, hd->dcid.datalen), + (const char *)ngtcp2_encode_hex(scid, hd->scid.data, hd->scid.datalen), + hd->version, strpkttype(hd), hd->len); + } +} + +void ngtcp2_log_rx_pkt_hd(ngtcp2_log *log, const ngtcp2_pkt_hd *hd) { + log_pkt_hd(log, hd, "rx"); +} + +void ngtcp2_log_tx_pkt_hd(ngtcp2_log *log, const ngtcp2_pkt_hd *hd) { + log_pkt_hd(log, hd, "tx"); +} + +void ngtcp2_log_info(ngtcp2_log *log, ngtcp2_log_event ev, const char *fmt, + ...) { + va_list ap; + int n; + char buf[NGTCP2_LOG_BUFLEN]; + + if (!log->log_printf || !(log->events & ev)) { + return; + } + + va_start(ap, fmt); + n = vsnprintf(buf, sizeof(buf), fmt, ap); + va_end(ap); + + if (n < 0 || (size_t)n >= sizeof(buf)) { + return; + } + + log->log_printf(log->user_data, (NGTCP2_LOG_HD " %s"), + timestamp_cast(log->last_ts - log->ts), log->scid, + strevent(ev), buf); +} + +void ngtcp2_log_tx_cancel(ngtcp2_log *log, const ngtcp2_pkt_hd *hd) { + ngtcp2_log_info(log, NGTCP2_LOG_EVENT_PKT, + "cancel tx pkn=%" PRId64 " type=%s", hd->pkt_num, + strpkttype(hd)); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_log.h b/contrib/libs/ngtcp2/lib/ngtcp2_log.h new file mode 100644 index 0000000000..13fb81a72e --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_log.h @@ -0,0 +1,132 @@ +/* + * ngtcp2 + * + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_LOG_H +#define NGTCP2_LOG_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_pkt.h" + +typedef struct ngtcp2_log { + /* log_printf is a sink to write log. NULL means no logging + output. */ + ngtcp2_printf log_printf; + /* events is an event filter. Only events set in this field are + emitted. */ + uint8_t events; + /* ts is the time point used to write time delta in the log. */ + ngtcp2_tstamp ts; + /* last_ts is the most recent time point that this object is + told. */ + ngtcp2_tstamp last_ts; + /* user_data is user-defined opaque data which is passed to + log_pritnf. */ + void *user_data; + /* scid is SCID encoded as NULL-terminated hex string. */ + uint8_t scid[NGTCP2_MAX_CIDLEN * 2 + 1]; +} ngtcp2_log; + +/** + * @enum + * + * :type:`ngtcp2_log_event` defines an event of ngtcp2 library + * internal logger. + */ +typedef enum ngtcp2_log_event { + /** + * :enum:`NGTCP2_LOG_EVENT_NONE` represents no event. + */ + NGTCP2_LOG_EVENT_NONE, + /** + * :enum:`NGTCP2_LOG_EVENT_CON` is a connection (catch-all) event + */ + NGTCP2_LOG_EVENT_CON = 0x1, + /** + * :enum:`NGTCP2_LOG_EVENT_PKT` is a packet event. + */ + NGTCP2_LOG_EVENT_PKT = 0x2, + /** + * :enum:`NGTCP2_LOG_EVENT_FRM` is a QUIC frame event. + */ + NGTCP2_LOG_EVENT_FRM = 0x4, + /** + * :enum:`NGTCP2_LOG_EVENT_LDC` is a loss detection and congestion + * control event. + */ + NGTCP2_LOG_EVENT_LDC = 0x8, + /** + * :enum:`NGTCP2_LOG_EVENT_CRY` is a crypto event. + */ + NGTCP2_LOG_EVENT_CRY = 0x10, + /** + * :enum:`NGTCP2_LOG_EVENT_PTV` is a path validation event. + */ + NGTCP2_LOG_EVENT_PTV = 0x20, + /** + * :enum:`NGTCP2_LOG_EVENT_CCA` is a congestion controller algorithm + * event. + */ + NGTCP2_LOG_EVENT_CCA = 0x40, +} ngtcp2_log_event; + +void ngtcp2_log_init(ngtcp2_log *log, const ngtcp2_cid *scid, + ngtcp2_printf log_printf, ngtcp2_tstamp ts, + void *user_data); + +void ngtcp2_log_rx_fr(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_frame *fr); +void ngtcp2_log_tx_fr(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const ngtcp2_frame *fr); + +void ngtcp2_log_rx_vn(ngtcp2_log *log, const ngtcp2_pkt_hd *hd, + const uint32_t *sv, size_t nsv); + +void ngtcp2_log_rx_sr(ngtcp2_log *log, const ngtcp2_pkt_stateless_reset *sr); + +void ngtcp2_log_remote_tp(ngtcp2_log *log, + const ngtcp2_transport_params *params); + +void ngtcp2_log_pkt_lost(ngtcp2_log *log, int64_t pkt_num, uint8_t type, + uint8_t flags, ngtcp2_tstamp sent_ts); + +void ngtcp2_log_rx_pkt_hd(ngtcp2_log *log, const ngtcp2_pkt_hd *hd); + +void ngtcp2_log_tx_pkt_hd(ngtcp2_log *log, const ngtcp2_pkt_hd *hd); + +void ngtcp2_log_tx_cancel(ngtcp2_log *log, const ngtcp2_pkt_hd *hd); + +/** + * @function + * + * `ngtcp2_log_info` writes info level log. + */ +void ngtcp2_log_info(ngtcp2_log *log, ngtcp2_log_event ev, const char *fmt, + ...); + +#endif /* !defined(NGTCP2_LOG_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_macro.h b/contrib/libs/ngtcp2/lib/ngtcp2_macro.h new file mode 100644 index 0000000000..649ed8434a --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_macro.h @@ -0,0 +1,81 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_MACRO_H +#define NGTCP2_MACRO_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <stddef.h> + +#include <ngtcp2/ngtcp2.h> + +#define ngtcp2_struct_of(ptr, type, member) \ + ((type *)(void *)((char *)(ptr) - offsetof(type, member))) + +/* ngtcp2_list_insert inserts |T| before |*PD|. The contract is that + this is singly linked list, and the next element is pointed by next + field of the previous element. |PD| must be a pointer to the + pointer to the next field of the previous element of |*PD|: if C is + the previous element of |PD|, PD = &C->next. */ +#define ngtcp2_list_insert(T, PD) \ + do { \ + (T)->next = *(PD); \ + *(PD) = (T); \ + } while (0) + +/* + * ngtcp2_arraylen returns the number of elements in array |A|. + */ +#define ngtcp2_arraylen(A) (sizeof(A) / sizeof(A[0])) + +#define ngtcp2_max_def(SUFFIX, T) \ + static inline T ngtcp2_max_##SUFFIX(T a, T b) { return a < b ? b : a; } + +ngtcp2_max_def(int8, int8_t); +ngtcp2_max_def(int16, int16_t); +ngtcp2_max_def(int32, int32_t); +ngtcp2_max_def(int64, int64_t); +ngtcp2_max_def(uint8, uint8_t); +ngtcp2_max_def(uint16, uint16_t); +ngtcp2_max_def(uint32, uint32_t); +ngtcp2_max_def(uint64, uint64_t); +ngtcp2_max_def(size, size_t); + +#define ngtcp2_min_def(SUFFIX, T) \ + static inline T ngtcp2_min_##SUFFIX(T a, T b) { return a < b ? a : b; } + +ngtcp2_min_def(int8, int8_t); +ngtcp2_min_def(int16, int16_t); +ngtcp2_min_def(int32, int32_t); +ngtcp2_min_def(int64, int64_t); +ngtcp2_min_def(uint8, uint8_t); +ngtcp2_min_def(uint16, uint16_t); +ngtcp2_min_def(uint32, uint32_t); +ngtcp2_min_def(uint64, uint64_t); +ngtcp2_min_def(size, size_t); + +#endif /* !defined(NGTCP2_MACRO_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_map.c b/contrib/libs/ngtcp2/lib/ngtcp2_map.c new file mode 100644 index 0000000000..9eb102f16b --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_map.c @@ -0,0 +1,302 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_map.h" + +#include <string.h> +#include <assert.h> +#include <stdio.h> + +#include "ngtcp2_conv.h" + +#define NGTCP2_INITIAL_TABLE_LENBITS 4 + +void ngtcp2_map_init(ngtcp2_map *map, const ngtcp2_mem *mem) { + map->mem = mem; + map->hashbits = 0; + map->table = NULL; + map->size = 0; +} + +void ngtcp2_map_free(ngtcp2_map *map) { + if (!map) { + return; + } + + ngtcp2_mem_free(map->mem, map->table); +} + +int ngtcp2_map_each(const ngtcp2_map *map, int (*func)(void *data, void *ptr), + void *ptr) { + int rv; + size_t i; + ngtcp2_map_bucket *bkt; + size_t tablelen; + + if (map->size == 0) { + return 0; + } + + tablelen = 1u << map->hashbits; + + for (i = 0; i < tablelen; ++i) { + bkt = &map->table[i]; + + if (bkt->data == NULL) { + continue; + } + + rv = func(bkt->data, ptr); + if (rv != 0) { + return rv; + } + } + + return 0; +} + +static size_t hash(ngtcp2_map_key_type key, size_t bits) { + return (size_t)((key * 11400714819323198485llu) >> (64 - bits)); +} + +static void map_bucket_swap(ngtcp2_map_bucket *a, ngtcp2_map_bucket *b) { + ngtcp2_map_bucket c = *a; + + *a = *b; + *b = c; +} + +#ifndef WIN32 +void ngtcp2_map_print_distance(const ngtcp2_map *map) { + size_t i; + size_t idx; + ngtcp2_map_bucket *bkt; + size_t tablelen; + + if (map->size == 0) { + return; + } + + tablelen = 1u << map->hashbits; + + for (i = 0; i < tablelen; ++i) { + bkt = &map->table[i]; + + if (bkt->data == NULL) { + fprintf(stderr, "@%zu <EMPTY>\n", i); + continue; + } + + idx = hash(bkt->key, map->hashbits); + fprintf(stderr, "@%zu hash=%zu key=%" PRIu64 " base=%zu distance=%u\n", i, + hash(bkt->key, map->hashbits), bkt->key, idx, bkt->psl); + } +} +#endif /* !defined(WIN32) */ + +static int insert(ngtcp2_map_bucket *table, size_t hashbits, + ngtcp2_map_key_type key, void *data) { + size_t idx = hash(key, hashbits); + ngtcp2_map_bucket b = {0, key, data}, *bkt; + size_t mask = (1u << hashbits) - 1; + + for (;;) { + bkt = &table[idx]; + + if (bkt->data == NULL) { + *bkt = b; + return 0; + } + + if (b.psl > bkt->psl) { + map_bucket_swap(bkt, &b); + } else if (bkt->key == key) { + /* TODO This check is just a waste after first swap or if this + function is called from map_resize. That said, there is no + difference with or without this conditional in performance + wise. */ + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + ++b.psl; + idx = (idx + 1) & mask; + } +} + +static int map_resize(ngtcp2_map *map, size_t new_hashbits) { + size_t i; + ngtcp2_map_bucket *new_table; + ngtcp2_map_bucket *bkt; + size_t tablelen; + int rv; + (void)rv; + + new_table = + ngtcp2_mem_calloc(map->mem, 1u << new_hashbits, sizeof(ngtcp2_map_bucket)); + if (new_table == NULL) { + return NGTCP2_ERR_NOMEM; + } + + if (map->size) { + tablelen = 1u << map->hashbits; + + for (i = 0; i < tablelen; ++i) { + bkt = &map->table[i]; + if (bkt->data == NULL) { + continue; + } + + rv = insert(new_table, new_hashbits, bkt->key, bkt->data); + + assert(0 == rv); + } + } + + ngtcp2_mem_free(map->mem, map->table); + map->hashbits = new_hashbits; + map->table = new_table; + + return 0; +} + +int ngtcp2_map_insert(ngtcp2_map *map, ngtcp2_map_key_type key, void *data) { + int rv; + + assert(data); + + /* Load factor is 0.75 */ + /* Under the very initial condition, that is map->size == 0 and + map->hashbits == 0, 4 > 3 still holds nicely. */ + if ((map->size + 1) * 4 > (1u << map->hashbits) * 3) { + if (map->hashbits) { + rv = map_resize(map, map->hashbits + 1); + if (rv != 0) { + return rv; + } + } else { + rv = map_resize(map, NGTCP2_INITIAL_TABLE_LENBITS); + if (rv != 0) { + return rv; + } + } + } + + rv = insert(map->table, map->hashbits, key, data); + if (rv != 0) { + return rv; + } + + ++map->size; + + return 0; +} + +void *ngtcp2_map_find(const ngtcp2_map *map, ngtcp2_map_key_type key) { + size_t idx; + ngtcp2_map_bucket *bkt; + size_t psl = 0; + size_t mask; + + if (map->size == 0) { + return NULL; + } + + idx = hash(key, map->hashbits); + mask = (1u << map->hashbits) - 1; + + for (;;) { + bkt = &map->table[idx]; + + if (bkt->data == NULL || psl > bkt->psl) { + return NULL; + } + + if (bkt->key == key) { + return bkt->data; + } + + ++psl; + idx = (idx + 1) & mask; + } +} + +int ngtcp2_map_remove(ngtcp2_map *map, ngtcp2_map_key_type key) { + size_t idx; + ngtcp2_map_bucket *b, *bkt; + size_t psl = 0; + size_t mask; + + if (map->size == 0) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + idx = hash(key, map->hashbits); + mask = (1u << map->hashbits) - 1; + + for (;;) { + bkt = &map->table[idx]; + + if (bkt->data == NULL || psl > bkt->psl) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + if (bkt->key == key) { + b = bkt; + idx = (idx + 1) & mask; + + for (;;) { + bkt = &map->table[idx]; + if (bkt->data == NULL || bkt->psl == 0) { + b->data = NULL; + break; + } + + --bkt->psl; + *b = *bkt; + b = bkt; + + idx = (idx + 1) & mask; + } + + --map->size; + + return 0; + } + + ++psl; + idx = (idx + 1) & mask; + } +} + +void ngtcp2_map_clear(ngtcp2_map *map) { + if (map->size == 0) { + return; + } + + memset(map->table, 0, sizeof(*map->table) * (1u << map->hashbits)); + map->size = 0; +} + +size_t ngtcp2_map_size(const ngtcp2_map *map) { return map->size; } diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_map.h b/contrib/libs/ngtcp2/lib/ngtcp2_map.h new file mode 100644 index 0000000000..9d882fb200 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_map.h @@ -0,0 +1,128 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_MAP_H +#define NGTCP2_MAP_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_mem.h" + +/* Implementation of unordered map */ + +typedef uint64_t ngtcp2_map_key_type; + +typedef struct ngtcp2_map_bucket { + uint32_t psl; + ngtcp2_map_key_type key; + void *data; +} ngtcp2_map_bucket; + +typedef struct ngtcp2_map { + ngtcp2_map_bucket *table; + const ngtcp2_mem *mem; + size_t size; + size_t hashbits; +} ngtcp2_map; + +/* + * ngtcp2_map_init initializes the map |map|. + */ +void ngtcp2_map_init(ngtcp2_map *map, const ngtcp2_mem *mem); + +/* + * ngtcp2_map_free deallocates any resources allocated for |map|. The + * stored entries are not freed by this function. Use + * ngtcp2_map_each() to free each entry. + */ +void ngtcp2_map_free(ngtcp2_map *map); + +/* + * ngtcp2_map_insert inserts the new |data| with the |key| to the map + * |map|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_INVALID_ARGUMENT + * The item associated by |key| already exists. + * NGTCP2_ERR_NOMEM + * Out of memory + */ +int ngtcp2_map_insert(ngtcp2_map *map, ngtcp2_map_key_type key, void *data); + +/* + * ngtcp2_map_find returns the entry associated by the key |key|. If + * there is no such entry, this function returns NULL. + */ +void *ngtcp2_map_find(const ngtcp2_map *map, ngtcp2_map_key_type key); + +/* + * ngtcp2_map_remove removes the entry associated by the key |key| + * from the |map|. The removed entry is not freed by this function. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_INVALID_ARGUMENT + * The entry associated by |key| does not exist. + */ +int ngtcp2_map_remove(ngtcp2_map *map, ngtcp2_map_key_type key); + +/* + * ngtcp2_map_clear removes all entries from |map|. The removed entry + * is not freed by this function. + */ +void ngtcp2_map_clear(ngtcp2_map *map); + +/* + * ngtcp2_map_size returns the number of items stored in the map + * |map|. + */ +size_t ngtcp2_map_size(const ngtcp2_map *map); + +/* + * ngtcp2_map_each applies the function |func| to each entry in the + * |map| with the optional user supplied pointer |ptr|. + * + * If the |func| returns 0, this function calls the |func| with the + * next entry. If the |func| returns nonzero, it will not call the + * |func| for further entries and return the return value of the + * |func| immediately. Thus, this function returns 0 if all the + * invocations of the |func| return 0, or nonzero value which the last + * invocation of |func| returns. + */ +int ngtcp2_map_each(const ngtcp2_map *map, int (*func)(void *data, void *ptr), + void *ptr); + +#ifndef WIN32 +void ngtcp2_map_print_distance(const ngtcp2_map *map); +#endif /* !defined(WIN32) */ + +#endif /* !defined(NGTCP2_MAP_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_mem.c b/contrib/libs/ngtcp2/lib/ngtcp2_mem.c new file mode 100644 index 0000000000..d30e1f986e --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_mem.c @@ -0,0 +1,113 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2014 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_mem.h" + +#include <stdio.h> + +static void *default_malloc(size_t size, void *user_data) { + (void)user_data; + + return malloc(size); +} + +static void default_free(void *ptr, void *user_data) { + (void)user_data; + + free(ptr); +} + +static void *default_calloc(size_t nmemb, size_t size, void *user_data) { + (void)user_data; + + return calloc(nmemb, size); +} + +static void *default_realloc(void *ptr, size_t size, void *user_data) { + (void)user_data; + + return realloc(ptr, size); +} + +static const ngtcp2_mem mem_default = {NULL, default_malloc, default_free, + default_calloc, default_realloc}; + +const ngtcp2_mem *ngtcp2_mem_default(void) { return &mem_default; } + +#ifndef MEMDEBUG +void *ngtcp2_mem_malloc(const ngtcp2_mem *mem, size_t size) { + return mem->malloc(size, mem->user_data); +} + +void ngtcp2_mem_free(const ngtcp2_mem *mem, void *ptr) { + mem->free(ptr, mem->user_data); +} + +void *ngtcp2_mem_calloc(const ngtcp2_mem *mem, size_t nmemb, size_t size) { + return mem->calloc(nmemb, size, mem->user_data); +} + +void *ngtcp2_mem_realloc(const ngtcp2_mem *mem, void *ptr, size_t size) { + return mem->realloc(ptr, size, mem->user_data); +} +#else /* defined(MEMDEBUG) */ +void *ngtcp2_mem_malloc_debug(const ngtcp2_mem *mem, size_t size, + const char *func, const char *file, size_t line) { + void *nptr = mem->malloc(size, mem->user_data); + + fprintf(stderr, "malloc %p size=%zu in %s at %s:%zu\n", nptr, size, func, + file, line); + + return nptr; +} + +void ngtcp2_mem_free_debug(const ngtcp2_mem *mem, void *ptr, const char *func, + const char *file, size_t line) { + fprintf(stderr, "free ptr=%p in %s at %s:%zu\n", ptr, func, file, line); + + mem->free(ptr, mem->user_data); +} + +void *ngtcp2_mem_calloc_debug(const ngtcp2_mem *mem, size_t nmemb, size_t size, + const char *func, const char *file, size_t line) { + void *nptr = mem->calloc(nmemb, size, mem->user_data); + + fprintf(stderr, "calloc %p nmemb=%zu size=%zu in %s at %s:%zu\n", nptr, nmemb, + size, func, file, line); + + return nptr; +} + +void *ngtcp2_mem_realloc_debug(const ngtcp2_mem *mem, void *ptr, size_t size, + const char *func, const char *file, + size_t line) { + void *nptr = mem->realloc(ptr, size, mem->user_data); + + fprintf(stderr, "realloc %p ptr=%p size=%zu in %s at %s:%zu\n", nptr, ptr, + size, func, file, line); + + return nptr; +} +#endif /* defined(MEMDEBUG) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_mem.h b/contrib/libs/ngtcp2/lib/ngtcp2_mem.h new file mode 100644 index 0000000000..9f81875212 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_mem.h @@ -0,0 +1,72 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2014 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_MEM_H +#define NGTCP2_MEM_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +/* Convenient wrapper functions to call allocator function in + |mem|. */ +#ifndef MEMDEBUG +void *ngtcp2_mem_malloc(const ngtcp2_mem *mem, size_t size); + +void ngtcp2_mem_free(const ngtcp2_mem *mem, void *ptr); + +void *ngtcp2_mem_calloc(const ngtcp2_mem *mem, size_t nmemb, size_t size); + +void *ngtcp2_mem_realloc(const ngtcp2_mem *mem, void *ptr, size_t size); +#else /* defined(MEMDEBUG) */ +void *ngtcp2_mem_malloc_debug(const ngtcp2_mem *mem, size_t size, + const char *func, const char *file, size_t line); + +# define ngtcp2_mem_malloc(MEM, SIZE) \ + ngtcp2_mem_malloc_debug((MEM), (SIZE), __func__, __FILE__, __LINE__) + +void ngtcp2_mem_free_debug(const ngtcp2_mem *mem, void *ptr, const char *func, + const char *file, size_t line); + +# define ngtcp2_mem_free(MEM, PTR) \ + ngtcp2_mem_free_debug((MEM), (PTR), __func__, __FILE__, __LINE__) + +void *ngtcp2_mem_calloc_debug(const ngtcp2_mem *mem, size_t nmemb, size_t size, + const char *func, const char *file, size_t line); + +# define ngtcp2_mem_calloc(MEM, NMEMB, SIZE) \ + ngtcp2_mem_calloc_debug((MEM), (NMEMB), (SIZE), __func__, __FILE__, \ + __LINE__) + +void *ngtcp2_mem_realloc_debug(const ngtcp2_mem *mem, void *ptr, size_t size, + const char *func, const char *file, size_t line); + +# define ngtcp2_mem_realloc(MEM, PTR, SIZE) \ + ngtcp2_mem_realloc_debug((MEM), (PTR), (SIZE), __func__, __FILE__, __LINE__) +#endif /* defined(MEMDEBUG) */ + +#endif /* !defined(NGTCP2_MEM_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_net.h b/contrib/libs/ngtcp2/lib/ngtcp2_net.h new file mode 100644 index 0000000000..103a2fb2d8 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_net.h @@ -0,0 +1,141 @@ +/* + * ngtcp2 + * + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_NET_H +#define NGTCP2_NET_H + +/* This header file is explicitly allowed to be shared with + ngtcp2_crypto library. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#ifdef HAVE_ARPA_INET_H +# include <arpa/inet.h> +#endif /* defined(HAVE_ARPA_INET_H) */ + +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif /* defined(HAVE_NETINET_IN_H) */ + +#ifdef HAVE_BYTESWAP_H +# include <byteswap.h> +#endif /* defined(HAVE_BYTESWAP_H) */ + +#ifdef HAVE_ENDIAN_H +# include <endian.h> +#endif /* defined(HAVE_ENDIAN_H) */ + +#ifdef HAVE_SYS_ENDIAN_H +# include <sys/endian.h> +#endif /* defined(HAVE_SYS_ENDIAN_H) */ + +#ifdef __APPLE__ +# include <libkern/OSByteOrder.h> +#endif /* defined(__APPLE__) */ + +#include <ngtcp2/ngtcp2.h> + +#if HAVE_DECL_BE64TOH +# define ngtcp2_ntohl64(N) be64toh(N) +# define ngtcp2_htonl64(N) htobe64(N) +#else /* !HAVE_DECL_BE64TOH */ +# ifdef WORDS_BIGENDIAN +# define ngtcp2_ntohl64(N) (N) +# define ngtcp2_htonl64(N) (N) +# else /* !defined(WORDS_BIGENDIAN) */ +# if HAVE_DECL_BSWAP_64 +# define ngtcp2_bswap64 bswap_64 +# elif defined(WIN32) +# define ngtcp2_bswap64 _byteswap_uint64 +# elif defined(__APPLE__) +# define ngtcp2_bswap64 OSSwapInt64 +# else /* !(HAVE_DECL_BSWAP_64 || defined(WIN32) || defined(__APPLE__)) */ +# define ngtcp2_bswap64(N) \ + ((uint64_t)(ngtcp2_ntohl((uint32_t)(N))) << 32 | \ + ngtcp2_ntohl((uint32_t)((N) >> 32))) +# endif /* !(HAVE_DECL_BSWAP_64 || defined(WIN32) || defined(__APPLE__)) */ +# define ngtcp2_ntohl64(N) ngtcp2_bswap64(N) +# define ngtcp2_htonl64(N) ngtcp2_bswap64(N) +# endif /* !defined(WORDS_BIGENDIAN) */ +#endif /* !HAVE_DECL_BE64TOH */ + +#ifdef WIN32 +/* Windows requires ws2_32 library for ntonl family functions. We + define inline functions for those function so that we don't have + dependency on that lib. */ + +# ifdef _MSC_VER +# define STIN static __inline +# else /* !defined(_MSC_VER) */ +# define STIN static inline +# endif /* !defined(_MSC_VER) */ + +STIN uint32_t ngtcp2_htonl(uint32_t hostlong) { + uint32_t res; + unsigned char *p = (unsigned char *)&res; + *p++ = (unsigned char)(hostlong >> 24); + *p++ = (hostlong >> 16) & 0xffu; + *p++ = (hostlong >> 8) & 0xffu; + *p = hostlong & 0xffu; + return res; +} + +STIN uint16_t ngtcp2_htons(uint16_t hostshort) { + uint16_t res; + unsigned char *p = (unsigned char *)&res; + *p++ = (unsigned char)(hostshort >> 8); + *p = hostshort & 0xffu; + return res; +} + +STIN uint32_t ngtcp2_ntohl(uint32_t netlong) { + uint32_t res; + unsigned char *p = (unsigned char *)&netlong; + res = (uint32_t)(*p++ << 24); + res += (uint32_t)(*p++ << 16); + res += (uint32_t)(*p++ << 8); + res += *p; + return res; +} + +STIN uint16_t ngtcp2_ntohs(uint16_t netshort) { + uint16_t res; + unsigned char *p = (unsigned char *)&netshort; + res = (uint16_t)(*p++ << 8); + res += *p; + return res; +} + +#else /* !defined(WIN32) */ + +# define ngtcp2_htonl htonl +# define ngtcp2_htons htons +# define ngtcp2_ntohl ntohl +# define ngtcp2_ntohs ntohs + +#endif /* !defined(WIN32) */ + +#endif /* !defined(NGTCP2_NET_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_objalloc.c b/contrib/libs/ngtcp2/lib/ngtcp2_objalloc.c new file mode 100644 index 0000000000..8b06cdd5de --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_objalloc.c @@ -0,0 +1,40 @@ +/* + * ngtcp2 + * + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_objalloc.h" + +void ngtcp2_objalloc_init(ngtcp2_objalloc *objalloc, size_t blklen, + const ngtcp2_mem *mem) { + ngtcp2_balloc_init(&objalloc->balloc, blklen, mem); + ngtcp2_opl_init(&objalloc->opl); +} + +void ngtcp2_objalloc_free(ngtcp2_objalloc *objalloc) { + ngtcp2_balloc_free(&objalloc->balloc); +} + +void ngtcp2_objalloc_clear(ngtcp2_objalloc *objalloc) { + ngtcp2_opl_clear(&objalloc->opl); + ngtcp2_balloc_clear(&objalloc->balloc); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_objalloc.h b/contrib/libs/ngtcp2/lib/ngtcp2_objalloc.h new file mode 100644 index 0000000000..cf23de7b2b --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_objalloc.h @@ -0,0 +1,147 @@ +/* + * ngtcp2 + * + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_OBJALLOC_H +#define NGTCP2_OBJALLOC_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_balloc.h" +#include "ngtcp2_opl.h" +#include "ngtcp2_macro.h" +#include "ngtcp2_mem.h" + +/* + * ngtcp2_objalloc combines ngtcp2_balloc and ngtcp2_opl, and provides + * an object pool with the custom allocator to reduce the allocation + * and deallocation overheads for small objects. + */ +typedef struct ngtcp2_objalloc { + ngtcp2_balloc balloc; + ngtcp2_opl opl; +} ngtcp2_objalloc; + +/* + * ngtcp2_objalloc_init initializes |objalloc|. |blklen| is directly + * passed to ngtcp2_balloc_init. + */ +void ngtcp2_objalloc_init(ngtcp2_objalloc *objalloc, size_t blklen, + const ngtcp2_mem *mem); + +/* + * ngtcp2_objalloc_free releases all allocated resources. + */ +void ngtcp2_objalloc_free(ngtcp2_objalloc *objalloc); + +/* + * ngtcp2_objalloc_clear releases all allocated resources and + * initializes its state. + */ +void ngtcp2_objalloc_clear(ngtcp2_objalloc *objalloc); + +#ifndef NOMEMPOOL +# define ngtcp2_objalloc_decl(NAME, TYPE, OPLENTFIELD) \ + inline static void ngtcp2_objalloc_##NAME##_init( \ + ngtcp2_objalloc *objalloc, size_t nmemb, const ngtcp2_mem *mem) { \ + ngtcp2_objalloc_init( \ + objalloc, ((sizeof(TYPE) + 0xfu) & ~(uintptr_t)0xfu) * nmemb, mem); \ + } \ + \ + TYPE *ngtcp2_objalloc_##NAME##_get(ngtcp2_objalloc *objalloc); \ + \ + TYPE *ngtcp2_objalloc_##NAME##_len_get(ngtcp2_objalloc *objalloc, \ + size_t len); \ + \ + inline static void ngtcp2_objalloc_##NAME##_release( \ + ngtcp2_objalloc *objalloc, TYPE *obj) { \ + ngtcp2_opl_push(&objalloc->opl, &obj->OPLENTFIELD); \ + } + +# define ngtcp2_objalloc_def(NAME, TYPE, OPLENTFIELD) \ + TYPE *ngtcp2_objalloc_##NAME##_get(ngtcp2_objalloc *objalloc) { \ + ngtcp2_opl_entry *oplent = ngtcp2_opl_pop(&objalloc->opl); \ + TYPE *obj; \ + int rv; \ + \ + if (!oplent) { \ + rv = \ + ngtcp2_balloc_get(&objalloc->balloc, (void **)&obj, sizeof(TYPE)); \ + if (rv != 0) { \ + return NULL; \ + } \ + \ + return obj; \ + } \ + \ + return ngtcp2_struct_of(oplent, TYPE, OPLENTFIELD); \ + } \ + \ + TYPE *ngtcp2_objalloc_##NAME##_len_get(ngtcp2_objalloc *objalloc, \ + size_t len) { \ + ngtcp2_opl_entry *oplent = ngtcp2_opl_pop(&objalloc->opl); \ + TYPE *obj; \ + int rv; \ + \ + if (!oplent) { \ + rv = ngtcp2_balloc_get(&objalloc->balloc, (void **)&obj, len); \ + if (rv != 0) { \ + return NULL; \ + } \ + \ + return obj; \ + } \ + \ + return ngtcp2_struct_of(oplent, TYPE, OPLENTFIELD); \ + } +#else /* defined(NOMEMPOOL) */ +# define ngtcp2_objalloc_decl(NAME, TYPE, OPLENTFIELD) \ + inline static void ngtcp2_objalloc_##NAME##_init( \ + ngtcp2_objalloc *objalloc, size_t nmemb, const ngtcp2_mem *mem) { \ + ngtcp2_objalloc_init( \ + objalloc, ((sizeof(TYPE) + 0xfu) & ~(uintptr_t)0xfu) * nmemb, mem); \ + } \ + \ + inline static TYPE *ngtcp2_objalloc_##NAME##_get( \ + ngtcp2_objalloc *objalloc) { \ + return ngtcp2_mem_malloc(objalloc->balloc.mem, sizeof(TYPE)); \ + } \ + \ + inline static TYPE *ngtcp2_objalloc_##NAME##_len_get( \ + ngtcp2_objalloc *objalloc, size_t len) { \ + return ngtcp2_mem_malloc(objalloc->balloc.mem, len); \ + } \ + \ + inline static void ngtcp2_objalloc_##NAME##_release( \ + ngtcp2_objalloc *objalloc, TYPE *obj) { \ + ngtcp2_mem_free(objalloc->balloc.mem, obj); \ + } + +# define ngtcp2_objalloc_def(NAME, TYPE, OPLENTFIELD) +#endif /* defined(NOMEMPOOL) */ + +#endif /* !defined(NGTCP2_OBJALLOC_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_opl.c b/contrib/libs/ngtcp2/lib/ngtcp2_opl.c new file mode 100644 index 0000000000..a29361c634 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_opl.c @@ -0,0 +1,46 @@ +/* + * ngtcp2 + * + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_opl.h" + +void ngtcp2_opl_init(ngtcp2_opl *opl) { opl->head = NULL; } + +void ngtcp2_opl_push(ngtcp2_opl *opl, ngtcp2_opl_entry *ent) { + ent->next = opl->head; + opl->head = ent; +} + +ngtcp2_opl_entry *ngtcp2_opl_pop(ngtcp2_opl *opl) { + ngtcp2_opl_entry *ent = opl->head; + + if (!ent) { + return NULL; + } + + opl->head = ent->next; + + return ent; +} + +void ngtcp2_opl_clear(ngtcp2_opl *opl) { opl->head = NULL; } diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_opl.h b/contrib/libs/ngtcp2/lib/ngtcp2_opl.h new file mode 100644 index 0000000000..f2df3f6dcc --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_opl.h @@ -0,0 +1,65 @@ +/* + * ngtcp2 + * + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_OPL_H +#define NGTCP2_OPL_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +typedef struct ngtcp2_opl_entry ngtcp2_opl_entry; + +struct ngtcp2_opl_entry { + ngtcp2_opl_entry *next; +}; + +/* + * ngtcp2_opl is an object memory pool. + */ +typedef struct ngtcp2_opl { + ngtcp2_opl_entry *head; +} ngtcp2_opl; + +/* + * ngtcp2_opl_init initializes |opl|. + */ +void ngtcp2_opl_init(ngtcp2_opl *opl); + +/* + * ngtcp2_opl_push inserts |ent| to |opl| head. + */ +void ngtcp2_opl_push(ngtcp2_opl *opl, ngtcp2_opl_entry *ent); + +/* + * ngtcp2_opl_pop removes the first ngtcp2_opl_entry from |opl| and + * returns it. If |opl| does not have any entry, it returns NULL. + */ +ngtcp2_opl_entry *ngtcp2_opl_pop(ngtcp2_opl *opl); + +void ngtcp2_opl_clear(ngtcp2_opl *opl); + +#endif /* !defined(NGTCP2_OPL_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_path.c b/contrib/libs/ngtcp2/lib/ngtcp2_path.c new file mode 100644 index 0000000000..8323873003 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_path.c @@ -0,0 +1,77 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_path.h" + +#include <string.h> + +#include "ngtcp2_addr.h" + +void ngtcp2_path_init(ngtcp2_path *path, const ngtcp2_addr *local, + const ngtcp2_addr *remote) { + path->local = *local; + path->remote = *remote; +} + +void ngtcp2_path_copy(ngtcp2_path *dest, const ngtcp2_path *src) { + ngtcp2_addr_copy(&dest->local, &src->local); + ngtcp2_addr_copy(&dest->remote, &src->remote); + dest->user_data = src->user_data; +} + +int ngtcp2_path_eq(const ngtcp2_path *a, const ngtcp2_path *b) { + return ngtcp2_addr_eq(&a->local, &b->local) && + ngtcp2_addr_eq(&a->remote, &b->remote); +} + +void ngtcp2_path_storage_init(ngtcp2_path_storage *ps, + const ngtcp2_sockaddr *local_addr, + ngtcp2_socklen local_addrlen, + const ngtcp2_sockaddr *remote_addr, + ngtcp2_socklen remote_addrlen, void *user_data) { + ngtcp2_addr_init(&ps->path.local, (const ngtcp2_sockaddr *)&ps->local_addrbuf, + 0); + ngtcp2_addr_init(&ps->path.remote, + (const ngtcp2_sockaddr *)&ps->remote_addrbuf, 0); + + ngtcp2_addr_copy_byte(&ps->path.local, local_addr, local_addrlen); + ngtcp2_addr_copy_byte(&ps->path.remote, remote_addr, remote_addrlen); + + ps->path.user_data = user_data; +} + +void ngtcp2_path_storage_init2(ngtcp2_path_storage *ps, + const ngtcp2_path *path) { + ngtcp2_path_storage_init(ps, path->local.addr, path->local.addrlen, + path->remote.addr, path->remote.addrlen, + path->user_data); +} + +void ngtcp2_path_storage_zero(ngtcp2_path_storage *ps) { + ngtcp2_addr_init(&ps->path.local, (const ngtcp2_sockaddr *)&ps->local_addrbuf, + 0); + ngtcp2_addr_init(&ps->path.remote, + (const ngtcp2_sockaddr *)&ps->remote_addrbuf, 0); + ps->path.user_data = NULL; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_path.h b/contrib/libs/ngtcp2/lib/ngtcp2_path.h new file mode 100644 index 0000000000..a708378db3 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_path.h @@ -0,0 +1,49 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_PATH_H +#define NGTCP2_PATH_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +/* + * ngtcp2_path_init initializes |path| with the given addresses. Note + * that the buffer pointed by local->addr and remote->addr are not + * copied. Their pointer values are assigned instead. + */ +void ngtcp2_path_init(ngtcp2_path *path, const ngtcp2_addr *local, + const ngtcp2_addr *remote); + +/* + * ngtcp2_path_storage_init2 initializes |ps| using |path| as initial + * data. + */ +void ngtcp2_path_storage_init2(ngtcp2_path_storage *ps, + const ngtcp2_path *path); + +#endif /* !defined(NGTCP2_PATH_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_pkt.c b/contrib/libs/ngtcp2/lib/ngtcp2_pkt.c new file mode 100644 index 0000000000..5c82e1bd50 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_pkt.c @@ -0,0 +1,2575 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_pkt.h" + +#include <assert.h> +#include <string.h> + +#include "ngtcp2_conv.h" +#include "ngtcp2_str.h" +#include "ngtcp2_macro.h" +#include "ngtcp2_cid.h" +#include "ngtcp2_mem.h" +#include "ngtcp2_vec.h" +#include "ngtcp2_unreachable.h" + +int ngtcp2_pkt_chain_new(ngtcp2_pkt_chain **ppc, const ngtcp2_path *path, + const ngtcp2_pkt_info *pi, const uint8_t *pkt, + size_t pktlen, size_t dgramlen, ngtcp2_tstamp ts, + const ngtcp2_mem *mem) { + *ppc = ngtcp2_mem_malloc(mem, sizeof(ngtcp2_pkt_chain) + pktlen); + if (*ppc == NULL) { + return NGTCP2_ERR_NOMEM; + } + + ngtcp2_path_storage_init2(&(*ppc)->path, path); + (*ppc)->pi = *pi; + (*ppc)->next = NULL; + (*ppc)->pkt = (uint8_t *)(*ppc) + sizeof(ngtcp2_pkt_chain); + (*ppc)->pktlen = pktlen; + (*ppc)->dgramlen = dgramlen; + (*ppc)->ts = ts; + + memcpy((*ppc)->pkt, pkt, pktlen); + + return 0; +} + +void ngtcp2_pkt_chain_del(ngtcp2_pkt_chain *pc, const ngtcp2_mem *mem) { + ngtcp2_mem_free(mem, pc); +} + +int ngtcp2_pkt_decode_version_cid(ngtcp2_version_cid *dest, const uint8_t *data, + size_t datalen, size_t short_dcidlen) { + size_t len; + uint32_t version; + size_t dcidlen, scidlen; + int supported_version; + + assert(datalen); + + if (data[0] & NGTCP2_HEADER_FORM_BIT) { + /* 1 byte (Header Form, Fixed Bit, Long Packet Type, Type-Specific bits) + * 4 bytes Version + * 1 byte DCID Length + * 1 byte SCID Length + */ + len = 1 + 4 + 1 + 1; + if (datalen < len) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + dcidlen = data[5]; + len += dcidlen; + + if (datalen < len) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + scidlen = data[5 + 1 + dcidlen]; + len += scidlen; + + if (datalen < len) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + ngtcp2_get_uint32be(&version, &data[1]); + + supported_version = ngtcp2_is_supported_version(version); + + if (supported_version && + (dcidlen > NGTCP2_MAX_CIDLEN || scidlen > NGTCP2_MAX_CIDLEN)) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + if (version && !supported_version && + datalen < NGTCP2_MAX_UDP_PAYLOAD_SIZE) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + dest->version = version; + dest->dcid = &data[6]; + dest->dcidlen = dcidlen; + dest->scid = &data[6 + dcidlen + 1]; + dest->scidlen = scidlen; + + if (!version) { + /* VN */ + return 0; + } + + if (!supported_version) { + return NGTCP2_ERR_VERSION_NEGOTIATION; + } + + return 0; + } + + assert(short_dcidlen <= NGTCP2_MAX_CIDLEN); + + len = 1 + short_dcidlen; + if (datalen < len) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + dest->version = 0; + dest->dcid = &data[1]; + dest->dcidlen = short_dcidlen; + dest->scid = NULL; + dest->scidlen = 0; + + return 0; +} + +void ngtcp2_pkt_hd_init(ngtcp2_pkt_hd *hd, uint8_t flags, uint8_t type, + const ngtcp2_cid *dcid, const ngtcp2_cid *scid, + int64_t pkt_num, size_t pkt_numlen, uint32_t version, + size_t len) { + hd->flags = flags; + hd->type = type; + + if (dcid) { + hd->dcid = *dcid; + } else { + ngtcp2_cid_zero(&hd->dcid); + } + + if (scid) { + hd->scid = *scid; + } else { + ngtcp2_cid_zero(&hd->scid); + } + + hd->pkt_num = pkt_num; + hd->token = NULL; + hd->tokenlen = 0; + hd->pkt_numlen = pkt_numlen; + hd->version = version; + hd->len = len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_hd_long(ngtcp2_pkt_hd *dest, const uint8_t *pkt, + size_t pktlen) { + uint8_t type; + uint32_t version; + size_t dcil, scil; + const uint8_t *p; + size_t len = 0; + size_t ntokenlen = 0; + const uint8_t *token = NULL; + size_t tokenlen = 0; + size_t nlonglen = 0; + size_t longlen = 0; + uint64_t vi; + uint8_t flags = NGTCP2_PKT_FLAG_LONG_FORM; + + if (pktlen < 5) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + if (!(pkt[0] & NGTCP2_HEADER_FORM_BIT)) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + ngtcp2_get_uint32be(&version, &pkt[1]); + + if (version == 0) { + type = NGTCP2_PKT_VERSION_NEGOTIATION; + /* Version Negotiation is not a long header packet. */ + flags = NGTCP2_PKT_FLAG_NONE; + /* This must be Version Negotiation packet which lacks packet + number and payload length fields. */ + len = 5 + 2; + } else { + if (!(pkt[0] & NGTCP2_FIXED_BIT_MASK)) { + flags |= NGTCP2_PKT_FLAG_FIXED_BIT_CLEAR; + } + + type = ngtcp2_pkt_get_type_long(version, pkt[0]); + switch (type) { + case 0: + return NGTCP2_ERR_INVALID_ARGUMENT; + case NGTCP2_PKT_INITIAL: + len = 1 /* Token Length */ + NGTCP2_MIN_LONG_HEADERLEN - + 1; /* Cut packet number field */ + break; + case NGTCP2_PKT_RETRY: + /* Retry packet does not have packet number and length fields */ + len = 5 + 2; + break; + case NGTCP2_PKT_HANDSHAKE: + case NGTCP2_PKT_0RTT: + len = NGTCP2_MIN_LONG_HEADERLEN - 1; /* Cut packet number field */ + break; + default: + /* Unreachable */ + ngtcp2_unreachable(); + } + } + + if (pktlen < len) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + p = &pkt[5]; + dcil = *p; + + if (dcil > NGTCP2_MAX_CIDLEN) { + /* QUIC v1 implementation never expect to receive CID length more + than NGTCP2_MAX_CIDLEN. */ + return NGTCP2_ERR_INVALID_ARGUMENT; + } + len += dcil; + + if (pktlen < len) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + p += 1 + dcil; + scil = *p; + + if (scil > NGTCP2_MAX_CIDLEN) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + len += scil; + + if (pktlen < len) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + p += 1 + scil; + + if (type == NGTCP2_PKT_INITIAL) { + /* Token Length */ + ntokenlen = ngtcp2_get_uvarintlen(p); + len += ntokenlen - 1; + + if (pktlen < len) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + p = ngtcp2_get_uvarint(&vi, p); + if (pktlen - len < vi) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + tokenlen = (size_t)vi; + len += tokenlen; + + if (tokenlen) { + token = p; + } + + p += tokenlen; + } + + switch (type) { + case NGTCP2_PKT_RETRY: + break; + default: + if (!(flags & NGTCP2_PKT_FLAG_LONG_FORM)) { + assert(type == NGTCP2_PKT_VERSION_NEGOTIATION); + /* Version Negotiation is not a long header packet. */ + break; + } + + /* Length */ + nlonglen = ngtcp2_get_uvarintlen(p); + len += nlonglen - 1; + + if (pktlen < len) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + ngtcp2_get_uvarint(&vi, p); +#if SIZE_MAX > UINT32_MAX + if (vi > SIZE_MAX) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } +#endif /* SIZE_MAX > UINT32_MAX */ + + longlen = (size_t)vi; + } + + dest->flags = flags; + dest->type = type; + dest->version = version; + dest->pkt_num = 0; + dest->pkt_numlen = 0; + + p = &pkt[6]; + ngtcp2_cid_init(&dest->dcid, p, dcil); + p += dcil + 1; + ngtcp2_cid_init(&dest->scid, p, scil); + p += scil; + + dest->token = token; + dest->tokenlen = tokenlen; + p += ntokenlen + tokenlen; + + dest->len = longlen; + +#ifndef NDEBUG + p += nlonglen; +#endif /* !defined(NDEBUG) */ + + assert((size_t)(p - pkt) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_hd_short(ngtcp2_pkt_hd *dest, const uint8_t *pkt, + size_t pktlen, size_t dcidlen) { + size_t len = 1 + dcidlen; + const uint8_t *p = pkt; + uint8_t flags = NGTCP2_PKT_FLAG_NONE; + + assert(dcidlen <= NGTCP2_MAX_CIDLEN); + + if (pktlen < len) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + if (pkt[0] & NGTCP2_HEADER_FORM_BIT) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + if (!(pkt[0] & NGTCP2_FIXED_BIT_MASK)) { + flags |= NGTCP2_PKT_FLAG_FIXED_BIT_CLEAR; + } + + p = &pkt[1]; + + dest->type = NGTCP2_PKT_1RTT; + + ngtcp2_cid_init(&dest->dcid, p, dcidlen); + p += dcidlen; + + /* Set 0 to SCID so that we don't accidentally reference it and gets + garbage. */ + ngtcp2_cid_zero(&dest->scid); + + dest->flags = flags; + dest->version = 0; + dest->len = 0; + dest->pkt_num = 0; + dest->pkt_numlen = 0; + dest->token = NULL; + dest->tokenlen = 0; + + assert((size_t)(p - pkt) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_encode_hd_long(uint8_t *out, size_t outlen, + const ngtcp2_pkt_hd *hd) { + uint8_t *p; + size_t len = NGTCP2_MIN_LONG_HEADERLEN + hd->dcid.datalen + hd->scid.datalen - + 2; /* NGTCP2_MIN_LONG_HEADERLEN includes 1 byte for + len and 1 byte for packet number. */ + + if (hd->type != NGTCP2_PKT_RETRY) { + len += NGTCP2_PKT_LENGTHLEN /* Length */ + hd->pkt_numlen; + } + + if (hd->type == NGTCP2_PKT_INITIAL) { + len += ngtcp2_put_uvarintlen(hd->tokenlen) + hd->tokenlen; + } + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p = (uint8_t)(NGTCP2_HEADER_FORM_BIT | + (ngtcp2_pkt_versioned_type(hd->version, hd->type) << 4) | + (uint8_t)(hd->pkt_numlen - 1)); + + if (!(hd->flags & NGTCP2_PKT_FLAG_FIXED_BIT_CLEAR)) { + *p |= NGTCP2_FIXED_BIT_MASK; + } + + ++p; + + p = ngtcp2_put_uint32be(p, hd->version); + *p++ = (uint8_t)hd->dcid.datalen; + + if (hd->dcid.datalen) { + p = ngtcp2_cpymem(p, hd->dcid.data, hd->dcid.datalen); + } + + *p++ = (uint8_t)hd->scid.datalen; + + if (hd->scid.datalen) { + p = ngtcp2_cpymem(p, hd->scid.data, hd->scid.datalen); + } + + if (hd->type == NGTCP2_PKT_INITIAL) { + p = ngtcp2_put_uvarint(p, hd->tokenlen); + + if (hd->tokenlen) { + p = ngtcp2_cpymem(p, hd->token, hd->tokenlen); + } + } + + if (hd->type != NGTCP2_PKT_RETRY) { + p = ngtcp2_put_uvarint30(p, (uint32_t)hd->len); + p = ngtcp2_put_pkt_num(p, hd->pkt_num, hd->pkt_numlen); + } + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_encode_hd_short(uint8_t *out, size_t outlen, + const ngtcp2_pkt_hd *hd) { + uint8_t *p; + size_t len = 1 + hd->dcid.datalen + hd->pkt_numlen; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p = (uint8_t)(hd->pkt_numlen - 1); + + if (!(hd->flags & NGTCP2_PKT_FLAG_FIXED_BIT_CLEAR)) { + *p |= NGTCP2_FIXED_BIT_MASK; + } + + if (hd->flags & NGTCP2_PKT_FLAG_KEY_PHASE) { + *p |= NGTCP2_SHORT_KEY_PHASE_BIT; + } + + ++p; + + if (hd->dcid.datalen) { + p = ngtcp2_cpymem(p, hd->dcid.data, hd->dcid.datalen); + } + + p = ngtcp2_put_pkt_num(p, hd->pkt_num, hd->pkt_numlen); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_frame(ngtcp2_frame *dest, const uint8_t *payload, + size_t payloadlen) { + uint8_t type; + + if (payloadlen == 0) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + type = payload[0]; + + switch (type) { + case NGTCP2_FRAME_PADDING: + return ngtcp2_pkt_decode_padding_frame(&dest->padding, payload, payloadlen); + case NGTCP2_FRAME_RESET_STREAM: + return ngtcp2_pkt_decode_reset_stream_frame(&dest->reset_stream, payload, + payloadlen); + case NGTCP2_FRAME_CONNECTION_CLOSE: + case NGTCP2_FRAME_CONNECTION_CLOSE_APP: + return ngtcp2_pkt_decode_connection_close_frame(&dest->connection_close, + payload, payloadlen); + case NGTCP2_FRAME_MAX_DATA: + return ngtcp2_pkt_decode_max_data_frame(&dest->max_data, payload, + payloadlen); + case NGTCP2_FRAME_MAX_STREAM_DATA: + return ngtcp2_pkt_decode_max_stream_data_frame(&dest->max_stream_data, + payload, payloadlen); + case NGTCP2_FRAME_MAX_STREAMS_BIDI: + case NGTCP2_FRAME_MAX_STREAMS_UNI: + return ngtcp2_pkt_decode_max_streams_frame(&dest->max_streams, payload, + payloadlen); + case NGTCP2_FRAME_PING: + return ngtcp2_pkt_decode_ping_frame(&dest->ping, payload, payloadlen); + case NGTCP2_FRAME_DATA_BLOCKED: + return ngtcp2_pkt_decode_data_blocked_frame(&dest->data_blocked, payload, + payloadlen); + case NGTCP2_FRAME_STREAM_DATA_BLOCKED: + return ngtcp2_pkt_decode_stream_data_blocked_frame( + &dest->stream_data_blocked, payload, payloadlen); + case NGTCP2_FRAME_STREAMS_BLOCKED_BIDI: + case NGTCP2_FRAME_STREAMS_BLOCKED_UNI: + return ngtcp2_pkt_decode_streams_blocked_frame(&dest->streams_blocked, + payload, payloadlen); + case NGTCP2_FRAME_NEW_CONNECTION_ID: + return ngtcp2_pkt_decode_new_connection_id_frame(&dest->new_connection_id, + payload, payloadlen); + case NGTCP2_FRAME_STOP_SENDING: + return ngtcp2_pkt_decode_stop_sending_frame(&dest->stop_sending, payload, + payloadlen); + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + return ngtcp2_pkt_decode_ack_frame(&dest->ack, payload, payloadlen); + case NGTCP2_FRAME_PATH_CHALLENGE: + return ngtcp2_pkt_decode_path_challenge_frame(&dest->path_challenge, + payload, payloadlen); + case NGTCP2_FRAME_PATH_RESPONSE: + return ngtcp2_pkt_decode_path_response_frame(&dest->path_response, payload, + payloadlen); + case NGTCP2_FRAME_CRYPTO: + return ngtcp2_pkt_decode_crypto_frame(&dest->stream, payload, payloadlen); + case NGTCP2_FRAME_NEW_TOKEN: + return ngtcp2_pkt_decode_new_token_frame(&dest->new_token, payload, + payloadlen); + case NGTCP2_FRAME_RETIRE_CONNECTION_ID: + return ngtcp2_pkt_decode_retire_connection_id_frame( + &dest->retire_connection_id, payload, payloadlen); + case NGTCP2_FRAME_HANDSHAKE_DONE: + return ngtcp2_pkt_decode_handshake_done_frame(&dest->handshake_done, + payload, payloadlen); + case NGTCP2_FRAME_DATAGRAM: + case NGTCP2_FRAME_DATAGRAM_LEN: + return ngtcp2_pkt_decode_datagram_frame(&dest->datagram, payload, + payloadlen); + default: + if ((type & ~(NGTCP2_FRAME_STREAM - 1)) == NGTCP2_FRAME_STREAM) { + return ngtcp2_pkt_decode_stream_frame(&dest->stream, payload, payloadlen); + } + + /* For frame types > 0xff, use ngtcp2_get_uvarintlen and + ngtcp2_get_uvarint to get a frame type, and then switch over + it. Verify that payloadlen >= ngtcp2_get_uvarintlen(payload) + before calling ngtcp2_get_uvarint(payload). */ + + return NGTCP2_ERR_FRAME_ENCODING; + } +} + +ngtcp2_ssize ngtcp2_pkt_decode_stream_frame(ngtcp2_stream *dest, + const uint8_t *payload, + size_t payloadlen) { + uint8_t type; + size_t len = 1 + 1; + const uint8_t *p; + size_t datalen = 0; + size_t ndatalen = 0; + size_t n; + uint64_t vi; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + type = payload[0]; + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + + if (type & NGTCP2_STREAM_OFF_BIT) { + ++len; + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + } + + if (type & NGTCP2_STREAM_LEN_BIT) { + ++len; + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + ndatalen = ngtcp2_get_uvarintlen(p); + len += ndatalen - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + /* p = */ ngtcp2_get_uvarint(&vi, p); + if (payloadlen - len < vi) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + datalen = (size_t)vi; + len += datalen; + } else { + len = payloadlen; + } + + p = payload + 1; + + dest->type = NGTCP2_FRAME_STREAM; + dest->flags = (uint8_t)(type & ~NGTCP2_FRAME_STREAM); + dest->fin = (type & NGTCP2_STREAM_FIN_BIT) != 0; + p = ngtcp2_get_varint(&dest->stream_id, p); + + if (type & NGTCP2_STREAM_OFF_BIT) { + p = ngtcp2_get_uvarint(&dest->offset, p); + } else { + dest->offset = 0; + } + + if (type & NGTCP2_STREAM_LEN_BIT) { + p += ndatalen; + } else { + datalen = payloadlen - (size_t)(p - payload); + } + + if (datalen) { + dest->data[0].len = datalen; + dest->data[0].base = (uint8_t *)p; + dest->datacnt = 1; + p += datalen; + } else { + dest->datacnt = 0; + } + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_ack_frame(ngtcp2_ack *dest, + const uint8_t *payload, + size_t payloadlen) { + size_t rangecnt, max_rangecnt; + size_t nrangecnt; + size_t len = 1 + 1 + 1 + 1 + 1; + const uint8_t *p; + size_t i, j; + ngtcp2_ack_range *range; + size_t n; + uint8_t type; + uint64_t vi; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + type = payload[0]; + + p = payload + 1; + + /* Largest Acknowledged */ + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + + /* ACK Delay */ + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + + /* ACK Range Count */ + nrangecnt = ngtcp2_get_uvarintlen(p); + len += nrangecnt - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = ngtcp2_get_uvarint(&vi, p); + if (vi > SIZE_MAX / (1 + 1) || payloadlen - len < vi * (1 + 1)) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + rangecnt = (size_t)vi; + len += rangecnt * (1 + 1); + + /* First ACK Range */ + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + + for (i = 0; i < rangecnt; ++i) { + /* Gap, and Additional ACK Range */ + for (j = 0; j < 2; ++j) { + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + } + } + + if (type == NGTCP2_FRAME_ACK_ECN) { + len += 3; + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + for (i = 0; i < 3; ++i) { + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + } + } + + /* TODO We might not decode all ranges. It could be very large. */ + max_rangecnt = ngtcp2_min_size(NGTCP2_MAX_ACK_RANGES, rangecnt); + + p = payload + 1; + + dest->type = type; + p = ngtcp2_get_varint(&dest->largest_ack, p); + p = ngtcp2_get_uvarint(&dest->ack_delay, p); + /* This value will be assigned in the upper layer. */ + dest->ack_delay_unscaled = 0; + dest->rangecnt = max_rangecnt; + p += nrangecnt; + p = ngtcp2_get_uvarint(&dest->first_ack_range, p); + + for (i = 0; i < max_rangecnt; ++i) { + range = &dest->ranges[i]; + p = ngtcp2_get_uvarint(&range->gap, p); + p = ngtcp2_get_uvarint(&range->len, p); + } + + for (; i < rangecnt; ++i) { + p += ngtcp2_get_uvarintlen(p); + p += ngtcp2_get_uvarintlen(p); + } + + if (type == NGTCP2_FRAME_ACK_ECN) { + p = ngtcp2_get_uvarint(&dest->ecn.ect0, p); + p = ngtcp2_get_uvarint(&dest->ecn.ect1, p); + p = ngtcp2_get_uvarint(&dest->ecn.ce, p); + } + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_padding_frame(ngtcp2_padding *dest, + const uint8_t *payload, + size_t payloadlen) { + const uint8_t *p, *ep; + + assert(payloadlen > 0); + + p = payload + 1; + ep = payload + payloadlen; + + for (; p != ep && *p == NGTCP2_FRAME_PADDING; ++p) + ; + + dest->type = NGTCP2_FRAME_PADDING; + dest->len = (size_t)(p - payload); + + return (ngtcp2_ssize)dest->len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_reset_stream_frame(ngtcp2_reset_stream *dest, + const uint8_t *payload, + size_t payloadlen) { + size_t len = 1 + 1 + 1 + 1; + const uint8_t *p; + size_t n; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + dest->type = NGTCP2_FRAME_RESET_STREAM; + p = ngtcp2_get_varint(&dest->stream_id, p); + p = ngtcp2_get_uvarint(&dest->app_error_code, p); + p = ngtcp2_get_uvarint(&dest->final_size, p); + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_connection_close_frame( + ngtcp2_connection_close *dest, const uint8_t *payload, size_t payloadlen) { + size_t len = 1 + 1 + 1; + const uint8_t *p; + size_t reasonlen; + size_t nreasonlen; + size_t n; + uint8_t type; + uint64_t vi; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + type = payload[0]; + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + + if (type == NGTCP2_FRAME_CONNECTION_CLOSE) { + ++len; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + } + + nreasonlen = ngtcp2_get_uvarintlen(p); + len += nreasonlen - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = ngtcp2_get_uvarint(&vi, p); + if (payloadlen - len < vi) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + reasonlen = (size_t)vi; + len += reasonlen; + + p = payload + 1; + + dest->type = type; + p = ngtcp2_get_uvarint(&dest->error_code, p); + + if (type == NGTCP2_FRAME_CONNECTION_CLOSE) { + p = ngtcp2_get_uvarint(&dest->frame_type, p); + } else { + dest->frame_type = 0; + } + + dest->reasonlen = reasonlen; + p += nreasonlen; + + if (reasonlen == 0) { + dest->reason = NULL; + } else { + dest->reason = (uint8_t *)p; + p += reasonlen; + } + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_max_data_frame(ngtcp2_max_data *dest, + const uint8_t *payload, + size_t payloadlen) { + size_t len = 1 + 1; + const uint8_t *p; + size_t n; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + dest->type = NGTCP2_FRAME_MAX_DATA; + p = ngtcp2_get_uvarint(&dest->max_data, p); + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_max_stream_data_frame( + ngtcp2_max_stream_data *dest, const uint8_t *payload, size_t payloadlen) { + size_t len = 1 + 1 + 1; + const uint8_t *p; + size_t n; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + dest->type = NGTCP2_FRAME_MAX_STREAM_DATA; + p = ngtcp2_get_varint(&dest->stream_id, p); + p = ngtcp2_get_uvarint(&dest->max_stream_data, p); + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_max_streams_frame(ngtcp2_max_streams *dest, + const uint8_t *payload, + size_t payloadlen) { + size_t len = 1 + 1; + const uint8_t *p; + size_t n; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + dest->type = payload[0]; + p = ngtcp2_get_uvarint(&dest->max_streams, p); + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_ping_frame(ngtcp2_ping *dest, + const uint8_t *payload, + size_t payloadlen) { + (void)payload; + (void)payloadlen; + + dest->type = NGTCP2_FRAME_PING; + return 1; +} + +ngtcp2_ssize ngtcp2_pkt_decode_data_blocked_frame(ngtcp2_data_blocked *dest, + const uint8_t *payload, + size_t payloadlen) { + size_t len = 1 + 1; + const uint8_t *p; + size_t n; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + dest->type = NGTCP2_FRAME_DATA_BLOCKED; + p = ngtcp2_get_uvarint(&dest->offset, p); + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_stream_data_blocked_frame( + ngtcp2_stream_data_blocked *dest, const uint8_t *payload, size_t payloadlen) { + size_t len = 1 + 1 + 1; + const uint8_t *p; + size_t n; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + dest->type = NGTCP2_FRAME_STREAM_DATA_BLOCKED; + p = ngtcp2_get_varint(&dest->stream_id, p); + p = ngtcp2_get_uvarint(&dest->offset, p); + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_streams_blocked_frame( + ngtcp2_streams_blocked *dest, const uint8_t *payload, size_t payloadlen) { + size_t len = 1 + 1; + const uint8_t *p; + size_t n; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + dest->type = payload[0]; + p = ngtcp2_get_uvarint(&dest->max_streams, p); + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_new_connection_id_frame( + ngtcp2_new_connection_id *dest, const uint8_t *payload, size_t payloadlen) { + size_t len = 1 + 1 + 1 + 1 + 16; + const uint8_t *p; + size_t n; + size_t cil; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + + cil = *p; + if (cil < NGTCP2_MIN_CIDLEN || cil > NGTCP2_MAX_CIDLEN) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + len += cil; + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + dest->type = NGTCP2_FRAME_NEW_CONNECTION_ID; + p = ngtcp2_get_uvarint(&dest->seq, p); + p = ngtcp2_get_uvarint(&dest->retire_prior_to, p); + ++p; + ngtcp2_cid_init(&dest->cid, p, cil); + p += cil; + p = ngtcp2_get_bytes(dest->stateless_reset_token, p, + NGTCP2_STATELESS_RESET_TOKENLEN); + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_stop_sending_frame(ngtcp2_stop_sending *dest, + const uint8_t *payload, + size_t payloadlen) { + size_t len = 1 + 1 + 1; + const uint8_t *p; + size_t n; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + dest->type = NGTCP2_FRAME_STOP_SENDING; + p = ngtcp2_get_varint(&dest->stream_id, p); + p = ngtcp2_get_uvarint(&dest->app_error_code, p); + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_path_challenge_frame(ngtcp2_path_challenge *dest, + const uint8_t *payload, + size_t payloadlen) { + size_t len = 1 + 8; + const uint8_t *p; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + dest->type = NGTCP2_FRAME_PATH_CHALLENGE; + ngtcp2_cpymem(dest->data, p, sizeof(dest->data)); + p += sizeof(dest->data); + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_path_response_frame(ngtcp2_path_response *dest, + const uint8_t *payload, + size_t payloadlen) { + size_t len = 1 + 8; + const uint8_t *p; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + dest->type = NGTCP2_FRAME_PATH_RESPONSE; + ngtcp2_cpymem(dest->data, p, sizeof(dest->data)); + p += sizeof(dest->data); + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_crypto_frame(ngtcp2_stream *dest, + const uint8_t *payload, + size_t payloadlen) { + size_t len = 1 + 1 + 1; + const uint8_t *p; + size_t datalen; + size_t ndatalen; + size_t n; + uint64_t vi; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p += n; + + ndatalen = ngtcp2_get_uvarintlen(p); + len += ndatalen - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = ngtcp2_get_uvarint(&vi, p); + if (payloadlen - len < vi) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + datalen = (size_t)vi; + len += datalen; + + p = payload + 1; + + dest->type = NGTCP2_FRAME_CRYPTO; + dest->flags = 0; + dest->fin = 0; + dest->stream_id = 0; + p = ngtcp2_get_uvarint(&dest->offset, p); + dest->data[0].len = datalen; + p += ndatalen; + + if (dest->data[0].len) { + dest->data[0].base = (uint8_t *)p; + p += dest->data[0].len; + dest->datacnt = 1; + } else { + dest->data[0].base = NULL; + dest->datacnt = 0; + } + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_new_token_frame(ngtcp2_new_token *dest, + const uint8_t *payload, + size_t payloadlen) { + size_t len = 1 + 1; + const uint8_t *p; + size_t n; + size_t datalen; + uint64_t vi; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = ngtcp2_get_uvarint(&vi, p); + if (payloadlen - len < vi) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + datalen = (size_t)vi; + len += datalen; + + dest->type = NGTCP2_FRAME_NEW_TOKEN; + dest->tokenlen = datalen; + dest->token = (uint8_t *)p; + p += dest->tokenlen; + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize +ngtcp2_pkt_decode_retire_connection_id_frame(ngtcp2_retire_connection_id *dest, + const uint8_t *payload, + size_t payloadlen) { + size_t len = 1 + 1; + const uint8_t *p; + size_t n; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = payload + 1; + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + dest->type = NGTCP2_FRAME_RETIRE_CONNECTION_ID; + p = ngtcp2_get_uvarint(&dest->seq, p); + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_decode_handshake_done_frame(ngtcp2_handshake_done *dest, + const uint8_t *payload, + size_t payloadlen) { + (void)payload; + (void)payloadlen; + + dest->type = NGTCP2_FRAME_HANDSHAKE_DONE; + return 1; +} + +ngtcp2_ssize ngtcp2_pkt_decode_datagram_frame(ngtcp2_datagram *dest, + const uint8_t *payload, + size_t payloadlen) { + size_t len = 1; + const uint8_t *p; + uint8_t type; + size_t datalen; + size_t n; + uint64_t vi; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + type = payload[0]; + + p = payload + 1; + + switch (type) { + case NGTCP2_FRAME_DATAGRAM: + datalen = payloadlen - 1; + len = payloadlen; + break; + case NGTCP2_FRAME_DATAGRAM_LEN: + ++len; + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + n = ngtcp2_get_uvarintlen(p); + len += n - 1; + + if (payloadlen < len) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + p = ngtcp2_get_uvarint(&vi, p); + if (payloadlen - len < vi) { + return NGTCP2_ERR_FRAME_ENCODING; + } + + datalen = (size_t)vi; + len += datalen; + + break; + default: + ngtcp2_unreachable(); + } + + dest->type = type; + + if (datalen == 0) { + dest->datacnt = 0; + dest->data = NULL; + } else { + dest->datacnt = 1; + dest->data = dest->rdata; + dest->rdata[0].len = datalen; + + dest->rdata[0].base = (uint8_t *)p; + p += datalen; + } + + assert((size_t)(p - payload) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_encode_frame(uint8_t *out, size_t outlen, + ngtcp2_frame *fr) { + switch (fr->type) { + case NGTCP2_FRAME_STREAM: + return ngtcp2_pkt_encode_stream_frame(out, outlen, &fr->stream); + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + return ngtcp2_pkt_encode_ack_frame(out, outlen, &fr->ack); + case NGTCP2_FRAME_PADDING: + return ngtcp2_pkt_encode_padding_frame(out, outlen, &fr->padding); + case NGTCP2_FRAME_RESET_STREAM: + return ngtcp2_pkt_encode_reset_stream_frame(out, outlen, &fr->reset_stream); + case NGTCP2_FRAME_CONNECTION_CLOSE: + case NGTCP2_FRAME_CONNECTION_CLOSE_APP: + return ngtcp2_pkt_encode_connection_close_frame(out, outlen, + &fr->connection_close); + case NGTCP2_FRAME_MAX_DATA: + return ngtcp2_pkt_encode_max_data_frame(out, outlen, &fr->max_data); + case NGTCP2_FRAME_MAX_STREAM_DATA: + return ngtcp2_pkt_encode_max_stream_data_frame(out, outlen, + &fr->max_stream_data); + case NGTCP2_FRAME_MAX_STREAMS_BIDI: + case NGTCP2_FRAME_MAX_STREAMS_UNI: + return ngtcp2_pkt_encode_max_streams_frame(out, outlen, &fr->max_streams); + case NGTCP2_FRAME_PING: + return ngtcp2_pkt_encode_ping_frame(out, outlen, &fr->ping); + case NGTCP2_FRAME_DATA_BLOCKED: + return ngtcp2_pkt_encode_data_blocked_frame(out, outlen, &fr->data_blocked); + case NGTCP2_FRAME_STREAM_DATA_BLOCKED: + return ngtcp2_pkt_encode_stream_data_blocked_frame( + out, outlen, &fr->stream_data_blocked); + case NGTCP2_FRAME_STREAMS_BLOCKED_BIDI: + case NGTCP2_FRAME_STREAMS_BLOCKED_UNI: + return ngtcp2_pkt_encode_streams_blocked_frame(out, outlen, + &fr->streams_blocked); + case NGTCP2_FRAME_NEW_CONNECTION_ID: + return ngtcp2_pkt_encode_new_connection_id_frame(out, outlen, + &fr->new_connection_id); + case NGTCP2_FRAME_STOP_SENDING: + return ngtcp2_pkt_encode_stop_sending_frame(out, outlen, &fr->stop_sending); + case NGTCP2_FRAME_PATH_CHALLENGE: + return ngtcp2_pkt_encode_path_challenge_frame(out, outlen, + &fr->path_challenge); + case NGTCP2_FRAME_PATH_RESPONSE: + return ngtcp2_pkt_encode_path_response_frame(out, outlen, + &fr->path_response); + case NGTCP2_FRAME_CRYPTO: + return ngtcp2_pkt_encode_crypto_frame(out, outlen, &fr->stream); + case NGTCP2_FRAME_NEW_TOKEN: + return ngtcp2_pkt_encode_new_token_frame(out, outlen, &fr->new_token); + case NGTCP2_FRAME_RETIRE_CONNECTION_ID: + return ngtcp2_pkt_encode_retire_connection_id_frame( + out, outlen, &fr->retire_connection_id); + case NGTCP2_FRAME_HANDSHAKE_DONE: + return ngtcp2_pkt_encode_handshake_done_frame(out, outlen, + &fr->handshake_done); + case NGTCP2_FRAME_DATAGRAM: + case NGTCP2_FRAME_DATAGRAM_LEN: + return ngtcp2_pkt_encode_datagram_frame(out, outlen, &fr->datagram); + default: + return NGTCP2_ERR_INVALID_ARGUMENT; + } +} + +ngtcp2_ssize ngtcp2_pkt_encode_stream_frame(uint8_t *out, size_t outlen, + ngtcp2_stream *fr) { + size_t len = 1; + uint8_t flags = NGTCP2_STREAM_LEN_BIT; + uint8_t *p; + size_t i; + size_t datalen = 0; + + if (fr->fin) { + flags |= NGTCP2_STREAM_FIN_BIT; + } + + if (fr->offset) { + flags |= NGTCP2_STREAM_OFF_BIT; + len += ngtcp2_put_uvarintlen(fr->offset); + } + + len += ngtcp2_put_uvarintlen((uint64_t)fr->stream_id); + + for (i = 0; i < fr->datacnt; ++i) { + datalen += fr->data[i].len; + } + + len += ngtcp2_put_uvarintlen(datalen); + len += datalen; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = flags | NGTCP2_FRAME_STREAM; + + fr->flags = flags; + + p = ngtcp2_put_uvarint(p, (uint64_t)fr->stream_id); + + if (fr->offset) { + p = ngtcp2_put_uvarint(p, fr->offset); + } + + p = ngtcp2_put_uvarint(p, datalen); + + for (i = 0; i < fr->datacnt; ++i) { + assert(fr->data[i].len); + assert(fr->data[i].base); + p = ngtcp2_cpymem(p, fr->data[i].base, fr->data[i].len); + } + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_encode_ack_frame(uint8_t *out, size_t outlen, + const ngtcp2_ack *fr) { + size_t len = 1 + ngtcp2_put_uvarintlen((uint64_t)fr->largest_ack) + + ngtcp2_put_uvarintlen(fr->ack_delay) + + ngtcp2_put_uvarintlen(fr->rangecnt) + + ngtcp2_put_uvarintlen(fr->first_ack_range); + uint8_t *p; + size_t i; + const ngtcp2_ack_range *range; + + for (i = 0; i < fr->rangecnt; ++i) { + range = &fr->ranges[i]; + len += ngtcp2_put_uvarintlen(range->gap); + len += ngtcp2_put_uvarintlen(range->len); + } + + if (fr->type == NGTCP2_FRAME_ACK_ECN) { + len += ngtcp2_put_uvarintlen(fr->ecn.ect0) + + ngtcp2_put_uvarintlen(fr->ecn.ect1) + + ngtcp2_put_uvarintlen(fr->ecn.ce); + } + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = (uint8_t)fr->type; + p = ngtcp2_put_uvarint(p, (uint64_t)fr->largest_ack); + p = ngtcp2_put_uvarint(p, fr->ack_delay); + p = ngtcp2_put_uvarint(p, fr->rangecnt); + p = ngtcp2_put_uvarint(p, fr->first_ack_range); + + for (i = 0; i < fr->rangecnt; ++i) { + range = &fr->ranges[i]; + p = ngtcp2_put_uvarint(p, range->gap); + p = ngtcp2_put_uvarint(p, range->len); + } + + if (fr->type == NGTCP2_FRAME_ACK_ECN) { + p = ngtcp2_put_uvarint(p, fr->ecn.ect0); + p = ngtcp2_put_uvarint(p, fr->ecn.ect1); + p = ngtcp2_put_uvarint(p, fr->ecn.ce); + } + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_encode_padding_frame(uint8_t *out, size_t outlen, + const ngtcp2_padding *fr) { + if (outlen < fr->len) { + return NGTCP2_ERR_NOBUF; + } + + memset(out, 0, fr->len); + + return (ngtcp2_ssize)fr->len; +} + +ngtcp2_ssize +ngtcp2_pkt_encode_reset_stream_frame(uint8_t *out, size_t outlen, + const ngtcp2_reset_stream *fr) { + size_t len = 1 + ngtcp2_put_uvarintlen((uint64_t)fr->stream_id) + + ngtcp2_put_uvarintlen(fr->app_error_code) + + ngtcp2_put_uvarintlen(fr->final_size); + uint8_t *p; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = NGTCP2_FRAME_RESET_STREAM; + p = ngtcp2_put_uvarint(p, (uint64_t)fr->stream_id); + p = ngtcp2_put_uvarint(p, fr->app_error_code); + p = ngtcp2_put_uvarint(p, fr->final_size); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize +ngtcp2_pkt_encode_connection_close_frame(uint8_t *out, size_t outlen, + const ngtcp2_connection_close *fr) { + size_t len = 1 + ngtcp2_put_uvarintlen(fr->error_code) + + (fr->type == NGTCP2_FRAME_CONNECTION_CLOSE + ? ngtcp2_put_uvarintlen(fr->frame_type) + : 0) + + ngtcp2_put_uvarintlen(fr->reasonlen) + fr->reasonlen; + uint8_t *p; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = (uint8_t)fr->type; + p = ngtcp2_put_uvarint(p, fr->error_code); + + if (fr->type == NGTCP2_FRAME_CONNECTION_CLOSE) { + p = ngtcp2_put_uvarint(p, fr->frame_type); + } + + p = ngtcp2_put_uvarint(p, fr->reasonlen); + + if (fr->reasonlen) { + p = ngtcp2_cpymem(p, fr->reason, fr->reasonlen); + } + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_encode_max_data_frame(uint8_t *out, size_t outlen, + const ngtcp2_max_data *fr) { + size_t len = 1 + ngtcp2_put_uvarintlen(fr->max_data); + uint8_t *p; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = NGTCP2_FRAME_MAX_DATA; + p = ngtcp2_put_uvarint(p, fr->max_data); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize +ngtcp2_pkt_encode_max_stream_data_frame(uint8_t *out, size_t outlen, + const ngtcp2_max_stream_data *fr) { + size_t len = 1 + ngtcp2_put_uvarintlen((uint64_t)fr->stream_id) + + ngtcp2_put_uvarintlen(fr->max_stream_data); + uint8_t *p; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = NGTCP2_FRAME_MAX_STREAM_DATA; + p = ngtcp2_put_uvarint(p, (uint64_t)fr->stream_id); + p = ngtcp2_put_uvarint(p, fr->max_stream_data); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_encode_max_streams_frame(uint8_t *out, size_t outlen, + const ngtcp2_max_streams *fr) { + size_t len = 1 + ngtcp2_put_uvarintlen(fr->max_streams); + uint8_t *p; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = (uint8_t)fr->type; + p = ngtcp2_put_uvarint(p, fr->max_streams); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_encode_ping_frame(uint8_t *out, size_t outlen, + const ngtcp2_ping *fr) { + (void)fr; + + if (outlen < 1) { + return NGTCP2_ERR_NOBUF; + } + + *out++ = NGTCP2_FRAME_PING; + + return 1; +} + +ngtcp2_ssize +ngtcp2_pkt_encode_data_blocked_frame(uint8_t *out, size_t outlen, + const ngtcp2_data_blocked *fr) { + size_t len = 1 + ngtcp2_put_uvarintlen(fr->offset); + uint8_t *p; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = NGTCP2_FRAME_DATA_BLOCKED; + p = ngtcp2_put_uvarint(p, fr->offset); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_encode_stream_data_blocked_frame( + uint8_t *out, size_t outlen, const ngtcp2_stream_data_blocked *fr) { + size_t len = 1 + ngtcp2_put_uvarintlen((uint64_t)fr->stream_id) + + ngtcp2_put_uvarintlen(fr->offset); + uint8_t *p; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = NGTCP2_FRAME_STREAM_DATA_BLOCKED; + p = ngtcp2_put_uvarint(p, (uint64_t)fr->stream_id); + p = ngtcp2_put_uvarint(p, fr->offset); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize +ngtcp2_pkt_encode_streams_blocked_frame(uint8_t *out, size_t outlen, + const ngtcp2_streams_blocked *fr) { + size_t len = 1 + ngtcp2_put_uvarintlen(fr->max_streams); + uint8_t *p; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = (uint8_t)fr->type; + p = ngtcp2_put_uvarint(p, fr->max_streams); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize +ngtcp2_pkt_encode_new_connection_id_frame(uint8_t *out, size_t outlen, + const ngtcp2_new_connection_id *fr) { + size_t len = 1 + ngtcp2_put_uvarintlen(fr->seq) + + ngtcp2_put_uvarintlen(fr->retire_prior_to) + 1 + + fr->cid.datalen + NGTCP2_STATELESS_RESET_TOKENLEN; + uint8_t *p; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = NGTCP2_FRAME_NEW_CONNECTION_ID; + p = ngtcp2_put_uvarint(p, fr->seq); + p = ngtcp2_put_uvarint(p, fr->retire_prior_to); + *p++ = (uint8_t)fr->cid.datalen; + p = ngtcp2_cpymem(p, fr->cid.data, fr->cid.datalen); + p = ngtcp2_cpymem(p, fr->stateless_reset_token, + NGTCP2_STATELESS_RESET_TOKENLEN); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize +ngtcp2_pkt_encode_stop_sending_frame(uint8_t *out, size_t outlen, + const ngtcp2_stop_sending *fr) { + size_t len = 1 + ngtcp2_put_uvarintlen((uint64_t)fr->stream_id) + + ngtcp2_put_uvarintlen(fr->app_error_code); + uint8_t *p; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = NGTCP2_FRAME_STOP_SENDING; + p = ngtcp2_put_uvarint(p, (uint64_t)fr->stream_id); + p = ngtcp2_put_uvarint(p, fr->app_error_code); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize +ngtcp2_pkt_encode_path_challenge_frame(uint8_t *out, size_t outlen, + const ngtcp2_path_challenge *fr) { + size_t len = 1 + 8; + uint8_t *p; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = NGTCP2_FRAME_PATH_CHALLENGE; + p = ngtcp2_cpymem(p, fr->data, sizeof(fr->data)); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize +ngtcp2_pkt_encode_path_response_frame(uint8_t *out, size_t outlen, + const ngtcp2_path_response *fr) { + size_t len = 1 + 8; + uint8_t *p; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = NGTCP2_FRAME_PATH_RESPONSE; + p = ngtcp2_cpymem(p, fr->data, sizeof(fr->data)); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_encode_crypto_frame(uint8_t *out, size_t outlen, + const ngtcp2_stream *fr) { + size_t len = 1; + uint8_t *p; + size_t i; + size_t datalen = 0; + + len += ngtcp2_put_uvarintlen(fr->offset); + + for (i = 0; i < fr->datacnt; ++i) { + datalen += fr->data[i].len; + } + + len += ngtcp2_put_uvarintlen(datalen); + len += datalen; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = NGTCP2_FRAME_CRYPTO; + + p = ngtcp2_put_uvarint(p, fr->offset); + p = ngtcp2_put_uvarint(p, datalen); + + for (i = 0; i < fr->datacnt; ++i) { + assert(fr->data[i].base); + p = ngtcp2_cpymem(p, fr->data[i].base, fr->data[i].len); + } + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_encode_new_token_frame(uint8_t *out, size_t outlen, + const ngtcp2_new_token *fr) { + size_t len = 1 + ngtcp2_put_uvarintlen(fr->tokenlen) + fr->tokenlen; + uint8_t *p; + + assert(fr->tokenlen); + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = NGTCP2_FRAME_NEW_TOKEN; + + p = ngtcp2_put_uvarint(p, fr->tokenlen); + p = ngtcp2_cpymem(p, fr->token, fr->tokenlen); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_encode_retire_connection_id_frame( + uint8_t *out, size_t outlen, const ngtcp2_retire_connection_id *fr) { + size_t len = 1 + ngtcp2_put_uvarintlen(fr->seq); + uint8_t *p; + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = NGTCP2_FRAME_RETIRE_CONNECTION_ID; + + p = ngtcp2_put_uvarint(p, fr->seq); + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize +ngtcp2_pkt_encode_handshake_done_frame(uint8_t *out, size_t outlen, + const ngtcp2_handshake_done *fr) { + (void)fr; + + if (outlen < 1) { + return NGTCP2_ERR_NOBUF; + } + + *out++ = NGTCP2_FRAME_HANDSHAKE_DONE; + + return 1; +} + +ngtcp2_ssize ngtcp2_pkt_encode_datagram_frame(uint8_t *out, size_t outlen, + const ngtcp2_datagram *fr) { + uint64_t datalen = ngtcp2_vec_len(fr->data, fr->datacnt); + uint64_t len = + 1 + + (fr->type == NGTCP2_FRAME_DATAGRAM ? 0 : ngtcp2_put_uvarintlen(datalen)) + + datalen; + uint8_t *p; + size_t i; + + assert(fr->type == NGTCP2_FRAME_DATAGRAM || + fr->type == NGTCP2_FRAME_DATAGRAM_LEN); + + if (outlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = out; + + *p++ = (uint8_t)fr->type; + + if (fr->type == NGTCP2_FRAME_DATAGRAM_LEN) { + p = ngtcp2_put_uvarint(p, datalen); + } + + for (i = 0; i < fr->datacnt; ++i) { + assert(fr->data[i].len); + assert(fr->data[i].base); + p = ngtcp2_cpymem(p, fr->data[i].base, fr->data[i].len); + } + + assert((size_t)(p - out) == len); + + return (ngtcp2_ssize)len; +} + +ngtcp2_ssize ngtcp2_pkt_write_version_negotiation( + uint8_t *dest, size_t destlen, uint8_t unused_random, const uint8_t *dcid, + size_t dcidlen, const uint8_t *scid, size_t scidlen, const uint32_t *sv, + size_t nsv) { + size_t len = 1 + 4 + 1 + dcidlen + 1 + scidlen + nsv * 4; + uint8_t *p; + size_t i; + + assert(dcidlen < 256); + assert(scidlen < 256); + + if (destlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = dest; + + *p++ = 0xc0 | unused_random; + p = ngtcp2_put_uint32be(p, 0); + *p++ = (uint8_t)dcidlen; + + if (dcidlen) { + p = ngtcp2_cpymem(p, dcid, dcidlen); + } + + *p++ = (uint8_t)scidlen; + + if (scidlen) { + p = ngtcp2_cpymem(p, scid, scidlen); + } + + for (i = 0; i < nsv; ++i) { + p = ngtcp2_put_uint32be(p, sv[i]); + } + + assert((size_t)(p - dest) == len); + + return (ngtcp2_ssize)len; +} + +size_t ngtcp2_pkt_decode_version_negotiation(uint32_t *dest, + const uint8_t *payload, + size_t payloadlen) { + const uint8_t *end = payload + payloadlen; + + assert((payloadlen % sizeof(uint32_t)) == 0); + + for (; payload != end;) { + payload = ngtcp2_get_uint32be(dest++, payload); + } + + return payloadlen / sizeof(uint32_t); +} + +int ngtcp2_pkt_decode_stateless_reset(ngtcp2_pkt_stateless_reset *sr, + const uint8_t *payload, + size_t payloadlen) { + const uint8_t *p = payload; + + if (payloadlen < + NGTCP2_MIN_STATELESS_RESET_RANDLEN + NGTCP2_STATELESS_RESET_TOKENLEN) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + sr->rand = p; + sr->randlen = payloadlen - NGTCP2_STATELESS_RESET_TOKENLEN; + p += sr->randlen; + memcpy(sr->stateless_reset_token, p, NGTCP2_STATELESS_RESET_TOKENLEN); + + return 0; +} + +int ngtcp2_pkt_decode_retry(ngtcp2_pkt_retry *dest, const uint8_t *payload, + size_t payloadlen) { + size_t len = /* token */ 1 + NGTCP2_RETRY_TAGLEN; + + if (payloadlen < len) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + dest->token = (uint8_t *)payload; + dest->tokenlen = (size_t)(payloadlen - NGTCP2_RETRY_TAGLEN); + ngtcp2_cpymem(dest->tag, payload + dest->tokenlen, NGTCP2_RETRY_TAGLEN); + + return 0; +} + +int64_t ngtcp2_pkt_adjust_pkt_num(int64_t max_pkt_num, int64_t pkt_num, + size_t pkt_numlen) { + int64_t expected = max_pkt_num + 1; + int64_t win = (int64_t)1 << (pkt_numlen * 8); + int64_t hwin = win / 2; + int64_t mask = win - 1; + int64_t cand = (expected & ~mask) | pkt_num; + + if (cand <= expected - hwin) { + assert(cand <= (int64_t)NGTCP2_MAX_VARINT - win); + return cand + win; + } + + if (cand > expected + hwin && cand >= win) { + return cand - win; + } + + return cand; +} + +int ngtcp2_pkt_validate_ack(const ngtcp2_ack *fr, int64_t min_pkt_num) { + int64_t largest_ack = fr->largest_ack; + size_t i; + + if (largest_ack < (int64_t)fr->first_ack_range) { + return NGTCP2_ERR_ACK_FRAME; + } + + largest_ack -= (int64_t)fr->first_ack_range; + + if (largest_ack < min_pkt_num) { + return NGTCP2_ERR_PROTO; + } + + for (i = 0; i < fr->rangecnt; ++i) { + if (largest_ack < (int64_t)fr->ranges[i].gap + 2) { + return NGTCP2_ERR_ACK_FRAME; + } + + largest_ack -= (int64_t)fr->ranges[i].gap + 2; + + if (largest_ack < (int64_t)fr->ranges[i].len) { + return NGTCP2_ERR_ACK_FRAME; + } + + largest_ack -= (int64_t)fr->ranges[i].len; + + if (largest_ack < min_pkt_num) { + return NGTCP2_ERR_PROTO; + } + } + + return 0; +} + +ngtcp2_ssize +ngtcp2_pkt_write_stateless_reset(uint8_t *dest, size_t destlen, + const uint8_t *stateless_reset_token, + const uint8_t *rand, size_t randlen) { + uint8_t *p; + + if (destlen < + NGTCP2_MIN_STATELESS_RESET_RANDLEN + NGTCP2_STATELESS_RESET_TOKENLEN) { + return NGTCP2_ERR_NOBUF; + } + + if (randlen < NGTCP2_MIN_STATELESS_RESET_RANDLEN) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + p = dest; + + randlen = ngtcp2_min_size(destlen - NGTCP2_STATELESS_RESET_TOKENLEN, randlen); + + p = ngtcp2_cpymem(p, rand, randlen); + p = ngtcp2_cpymem(p, stateless_reset_token, NGTCP2_STATELESS_RESET_TOKENLEN); + *dest = (uint8_t)((*dest & 0x7fu) | 0x40u); + + return p - dest; +} + +ngtcp2_ssize ngtcp2_pkt_write_retry( + uint8_t *dest, size_t destlen, uint32_t version, const ngtcp2_cid *dcid, + const ngtcp2_cid *scid, const ngtcp2_cid *odcid, const uint8_t *token, + size_t tokenlen, ngtcp2_encrypt encrypt, const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx) { + ngtcp2_pkt_hd hd; + uint8_t pseudo_retry[1500]; + ngtcp2_ssize pseudo_retrylen; + uint8_t tag[NGTCP2_RETRY_TAGLEN]; + int rv; + uint8_t *p; + size_t offset; + const uint8_t *nonce; + size_t noncelen; + + assert(tokenlen > 0); + assert(!ngtcp2_cid_eq(scid, odcid)); + + /* Retry packet is sent at most once per one connection attempt. In + the first connection attempt, client has to send random DCID + which is at least NGTCP2_MIN_INITIAL_DCIDLEN bytes long. */ + if (odcid->datalen < NGTCP2_MIN_INITIAL_DCIDLEN) { + return NGTCP2_ERR_INVALID_ARGUMENT; + } + + ngtcp2_pkt_hd_init(&hd, NGTCP2_PKT_FLAG_LONG_FORM, NGTCP2_PKT_RETRY, dcid, + scid, /* pkt_num = */ 0, /* pkt_numlen = */ 1, version, + /* len = */ 0); + + pseudo_retrylen = + ngtcp2_pkt_encode_pseudo_retry(pseudo_retry, sizeof(pseudo_retry), &hd, + /* unused = */ 0, odcid, token, tokenlen); + if (pseudo_retrylen < 0) { + return pseudo_retrylen; + } + + switch (version) { + case NGTCP2_PROTO_VER_V1: + default: + nonce = (const uint8_t *)NGTCP2_RETRY_NONCE_V1; + noncelen = sizeof(NGTCP2_RETRY_NONCE_V1) - 1; + break; + case NGTCP2_PROTO_VER_V2: + nonce = (const uint8_t *)NGTCP2_RETRY_NONCE_V2; + noncelen = sizeof(NGTCP2_RETRY_NONCE_V2) - 1; + break; + } + + /* OpenSSL does not like NULL plaintext. */ + rv = encrypt(tag, aead, aead_ctx, (const uint8_t *)"", 0, nonce, noncelen, + pseudo_retry, (size_t)pseudo_retrylen); + if (rv != 0) { + return rv; + } + + offset = 1 + odcid->datalen; + if (destlen < (size_t)pseudo_retrylen + sizeof(tag) - offset) { + return NGTCP2_ERR_NOBUF; + } + + p = ngtcp2_cpymem(dest, pseudo_retry + offset, + (size_t)pseudo_retrylen - offset); + p = ngtcp2_cpymem(p, tag, sizeof(tag)); + + return p - dest; +} + +ngtcp2_ssize ngtcp2_pkt_encode_pseudo_retry( + uint8_t *dest, size_t destlen, const ngtcp2_pkt_hd *hd, uint8_t unused, + const ngtcp2_cid *odcid, const uint8_t *token, size_t tokenlen) { + uint8_t *p = dest; + ngtcp2_ssize nwrite; + + if (destlen < 1 + odcid->datalen) { + return NGTCP2_ERR_NOBUF; + } + + *p++ = (uint8_t)odcid->datalen; + p = ngtcp2_cpymem(p, odcid->data, odcid->datalen); + destlen -= (size_t)(p - dest); + + nwrite = ngtcp2_pkt_encode_hd_long(p, destlen, hd); + if (nwrite < 0) { + return nwrite; + } + + if (destlen < (size_t)nwrite + tokenlen) { + return NGTCP2_ERR_NOBUF; + } + + *p &= 0xf0; + *p |= unused; + + p += nwrite; + + p = ngtcp2_cpymem(p, token, tokenlen); + + return p - dest; +} + +int ngtcp2_pkt_verify_retry_tag(uint32_t version, const ngtcp2_pkt_retry *retry, + const uint8_t *pkt, size_t pktlen, + ngtcp2_encrypt encrypt, + const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx) { + uint8_t pseudo_retry[1500]; + size_t pseudo_retrylen; + uint8_t *p = pseudo_retry; + int rv; + uint8_t tag[NGTCP2_RETRY_TAGLEN]; + const uint8_t *nonce; + size_t noncelen; + + assert(pktlen >= sizeof(retry->tag)); + + if (sizeof(pseudo_retry) < + 1 + retry->odcid.datalen + pktlen - sizeof(retry->tag)) { + return NGTCP2_ERR_PROTO; + } + + *p++ = (uint8_t)retry->odcid.datalen; + p = ngtcp2_cpymem(p, retry->odcid.data, retry->odcid.datalen); + p = ngtcp2_cpymem(p, pkt, pktlen - sizeof(retry->tag)); + + pseudo_retrylen = (size_t)(p - pseudo_retry); + + switch (version) { + case NGTCP2_PROTO_VER_V1: + default: + nonce = (const uint8_t *)NGTCP2_RETRY_NONCE_V1; + noncelen = sizeof(NGTCP2_RETRY_NONCE_V1) - 1; + break; + case NGTCP2_PROTO_VER_V2: + nonce = (const uint8_t *)NGTCP2_RETRY_NONCE_V2; + noncelen = sizeof(NGTCP2_RETRY_NONCE_V2) - 1; + break; + } + + /* OpenSSL does not like NULL plaintext. */ + rv = encrypt(tag, aead, aead_ctx, (const uint8_t *)"", 0, nonce, noncelen, + pseudo_retry, pseudo_retrylen); + if (rv != 0) { + return rv; + } + + if (0 != memcmp(retry->tag, tag, sizeof(retry->tag))) { + return NGTCP2_ERR_PROTO; + } + + return 0; +} + +size_t ngtcp2_pkt_stream_max_datalen(int64_t stream_id, uint64_t offset, + uint64_t len, size_t left) { + size_t n = 1 /* type */ + ngtcp2_put_uvarintlen((uint64_t)stream_id) + + (offset ? ngtcp2_put_uvarintlen(offset) : 0); + + if (left <= n) { + return (size_t)-1; + } + + left -= n; + + if (left > 8 + 1073741823 && len > 1073741823) { +#if SIZE_MAX > UINT32_MAX + len = ngtcp2_min_uint64(len, 4611686018427387903lu); +#endif /* SIZE_MAX > UINT32_MAX */ + return (size_t)ngtcp2_min_uint64(len, (uint64_t)(left - 8)); + } + + if (left > 4 + 16383 && len > 16383) { + len = ngtcp2_min_uint64(len, 1073741823); + return (size_t)ngtcp2_min_uint64(len, (uint64_t)(left - 4)); + } + + if (left > 2 + 63 && len > 63) { + len = ngtcp2_min_uint64(len, 16383); + return (size_t)ngtcp2_min_uint64(len, (uint64_t)(left - 2)); + } + + len = ngtcp2_min_uint64(len, 63); + return (size_t)ngtcp2_min_uint64(len, (uint64_t)(left - 1)); +} + +size_t ngtcp2_pkt_crypto_max_datalen(uint64_t offset, size_t len, size_t left) { + size_t n = 1 /* type */ + ngtcp2_put_uvarintlen(offset); + + /* CRYPTO frame must contain nonzero length data. Return -1 if + there is no space to write crypto data. */ + if (left <= n + 1) { + return (size_t)-1; + } + + left -= n; + + if (left > 8 + 1073741823 && len > 1073741823) { +#if SIZE_MAX > UINT32_MAX + len = ngtcp2_min_size(len, 4611686018427387903lu); +#endif /* SIZE_MAX > UINT32_MAX */ + return ngtcp2_min_size(len, left - 8); + } + + if (left > 4 + 16383 && len > 16383) { + len = ngtcp2_min_size(len, 1073741823); + return ngtcp2_min_size(len, left - 4); + } + + if (left > 2 + 63 && len > 63) { + len = ngtcp2_min_size(len, 16383); + return ngtcp2_min_size(len, left - 2); + } + + len = ngtcp2_min_size(len, 63); + return ngtcp2_min_size(len, left - 1); +} + +size_t ngtcp2_pkt_datagram_framelen(size_t len) { + return 1 /* type */ + ngtcp2_put_uvarintlen(len) + len; +} + +int ngtcp2_is_supported_version(uint32_t version) { + switch (version) { + case NGTCP2_PROTO_VER_V1: + case NGTCP2_PROTO_VER_V2: + return 1; + default: + return 0; + } +} + +int ngtcp2_is_reserved_version(uint32_t version) { + return (version & NGTCP2_RESERVED_VERSION_MASK) == + NGTCP2_RESERVED_VERSION_MASK; +} + +uint8_t ngtcp2_pkt_get_type_long(uint32_t version, uint8_t c) { + uint8_t pkt_type = (uint8_t)((c & NGTCP2_LONG_TYPE_MASK) >> 4); + + switch (version) { + case NGTCP2_PROTO_VER_V2: + switch (pkt_type) { + case NGTCP2_PKT_TYPE_INITIAL_V2: + return NGTCP2_PKT_INITIAL; + case NGTCP2_PKT_TYPE_0RTT_V2: + return NGTCP2_PKT_0RTT; + case NGTCP2_PKT_TYPE_HANDSHAKE_V2: + return NGTCP2_PKT_HANDSHAKE; + case NGTCP2_PKT_TYPE_RETRY_V2: + return NGTCP2_PKT_RETRY; + default: + return 0; + } + default: + if (!ngtcp2_is_supported_version(version)) { + return 0; + } + + switch (pkt_type) { + case NGTCP2_PKT_TYPE_INITIAL_V1: + return NGTCP2_PKT_INITIAL; + case NGTCP2_PKT_TYPE_0RTT_V1: + return NGTCP2_PKT_0RTT; + case NGTCP2_PKT_TYPE_HANDSHAKE_V1: + return NGTCP2_PKT_HANDSHAKE; + case NGTCP2_PKT_TYPE_RETRY_V1: + return NGTCP2_PKT_RETRY; + default: + return 0; + } + } +} + +uint8_t ngtcp2_pkt_versioned_type(uint32_t version, uint32_t pkt_type) { + switch (version) { + case NGTCP2_PROTO_VER_V2: + switch (pkt_type) { + case NGTCP2_PKT_INITIAL: + return NGTCP2_PKT_TYPE_INITIAL_V2; + case NGTCP2_PKT_0RTT: + return NGTCP2_PKT_TYPE_0RTT_V2; + case NGTCP2_PKT_HANDSHAKE: + return NGTCP2_PKT_TYPE_HANDSHAKE_V2; + case NGTCP2_PKT_RETRY: + return NGTCP2_PKT_TYPE_RETRY_V2; + default: + ngtcp2_unreachable(); + } + default: + /* Assume that unsupported versions share the numeric long packet + types with QUIC v1 in order to send a packet to elicit Version + Negotiation packet. */ + + switch (pkt_type) { + case NGTCP2_PKT_INITIAL: + return NGTCP2_PKT_TYPE_INITIAL_V1; + case NGTCP2_PKT_0RTT: + return NGTCP2_PKT_TYPE_0RTT_V1; + case NGTCP2_PKT_HANDSHAKE: + return NGTCP2_PKT_TYPE_HANDSHAKE_V1; + case NGTCP2_PKT_RETRY: + return NGTCP2_PKT_TYPE_RETRY_V1; + default: + ngtcp2_unreachable(); + } + } +} + +int ngtcp2_pkt_verify_reserved_bits(uint8_t c) { + if (c & NGTCP2_HEADER_FORM_BIT) { + return (c & NGTCP2_LONG_RESERVED_BIT_MASK) == 0 ? 0 : NGTCP2_ERR_PROTO; + } + + return (c & NGTCP2_SHORT_RESERVED_BIT_MASK) == 0 ? 0 : NGTCP2_ERR_PROTO; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_pkt.h b/contrib/libs/ngtcp2/lib/ngtcp2_pkt.h new file mode 100644 index 0000000000..86ebecef7b --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_pkt.h @@ -0,0 +1,1228 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_PKT_H +#define NGTCP2_PKT_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +/* QUIC header macros */ +#define NGTCP2_HEADER_FORM_BIT 0x80 +#define NGTCP2_FIXED_BIT_MASK 0x40 +#define NGTCP2_PKT_NUMLEN_MASK 0x03 + +/* Long header specific macros */ +#define NGTCP2_LONG_TYPE_MASK 0x30 +#define NGTCP2_LONG_RESERVED_BIT_MASK 0x0c + +/* Short header specific macros */ +#define NGTCP2_SHORT_RESERVED_BIT_MASK 0x18 +#define NGTCP2_SHORT_KEY_PHASE_BIT 0x04 + +/* NGTCP2_SR_TYPE is a Type field of Stateless Reset. */ +#define NGTCP2_SR_TYPE 0x1f + +/* NGTCP2_MIN_LONG_HEADERLEN is the minimum length of long header. + That is (1|1|TT|RR|PP)<1> + VERSION<4> + DCIL<1> + SCIL<1> + + LENGTH<1> + PKN<1> */ +#define NGTCP2_MIN_LONG_HEADERLEN (1 + 4 + 1 + 1 + 1 + 1) + +/* STREAM frame specific macros */ +#define NGTCP2_STREAM_FIN_BIT 0x01 +#define NGTCP2_STREAM_LEN_BIT 0x02 +#define NGTCP2_STREAM_OFF_BIT 0x04 + +/* NGTCP2_STREAM_OVERHEAD is the maximum number of bytes required + other than payload for STREAM frame. That is from type field to + the beginning of the payload. */ +#define NGTCP2_STREAM_OVERHEAD (1 + 8 + 8 + 8) + +/* NGTCP2_CRYPTO_OVERHEAD is the maximum number of bytes required + other than payload for CRYPTO frame. That is from type field to + the beginning of the payload. */ +#define NGTCP2_CRYPTO_OVERHEAD (1 + 8 + 8) + +/* NGTCP2_DATAGRAM_OVERHEAD is the maximum number of bytes required + other than payload for DATAGRAM frame. That is from type field to + the beginning of the payload. */ +#define NGTCP2_DATAGRAM_OVERHEAD (1 + 8) + +/* NGTCP2_MAX_SERVER_STREAM_ID_BIDI is the maximum bidirectional + server stream ID. */ +#define NGTCP2_MAX_SERVER_STREAM_ID_BIDI ((int64_t)0x3ffffffffffffffdll) +/* NGTCP2_MAX_CLIENT_STREAM_ID_BIDI is the maximum bidirectional + client stream ID. */ +#define NGTCP2_MAX_CLIENT_STREAM_ID_BIDI ((int64_t)0x3ffffffffffffffcll) +/* NGTCP2_MAX_SERVER_STREAM_ID_UNI is the maximum unidirectional + server stream ID. */ +#define NGTCP2_MAX_SERVER_STREAM_ID_UNI ((int64_t)0x3fffffffffffffffll) +/* NGTCP2_MAX_CLIENT_STREAM_ID_UNI is the maximum unidirectional + client stream ID. */ +#define NGTCP2_MAX_CLIENT_STREAM_ID_UNI ((int64_t)0x3ffffffffffffffell) + +/* NGTCP2_MAX_NUM_ACK_RANGES is the maximum number of Additional ACK + ranges which this library can create, or decode. */ +#define NGTCP2_MAX_ACK_RANGES 32 + +/* NGTCP2_MAX_PKT_NUM is the maximum packet number. */ +#define NGTCP2_MAX_PKT_NUM ((int64_t)((1ll << 62) - 1)) + +/* NGTCP2_MIN_PKT_EXPANDLEN is the minimum packet size expansion to + hide/trigger Stateless Reset. */ +#define NGTCP2_MIN_PKT_EXPANDLEN 22 + +/* NGTCP2_RETRY_TAGLEN is the length of Retry packet integrity tag. */ +#define NGTCP2_RETRY_TAGLEN 16 + +/* NGTCP2_HARD_MAX_UDP_PAYLOAD_SIZE is the maximum UDP datagram + payload size that this library can write. */ +#define NGTCP2_HARD_MAX_UDP_PAYLOAD_SIZE ((1 << 24) - 1) + +/* NGTCP2_PKT_LENGTHLEN is the number of bytes that is occupied by + Length field in Long packet header. */ +#define NGTCP2_PKT_LENGTHLEN 4 + +/* NGTCP2_PKT_TYPE_INITIAL_V1 is Initial long header packet type for + QUIC v1. */ +#define NGTCP2_PKT_TYPE_INITIAL_V1 0x0 +/* NGTCP2_PKT_TYPE_0RTT_V1 is 0RTT long header packet type for QUIC + v1. */ +#define NGTCP2_PKT_TYPE_0RTT_V1 0x1 +/* NGTCP2_PKT_TYPE_HANDSHAKE_V1 is Handshake long header packet type + for QUIC v1. */ +#define NGTCP2_PKT_TYPE_HANDSHAKE_V1 0x2 +/* NGTCP2_PKT_TYPE_RETRY_V1 is Retry long header packet type for QUIC + v1. */ +#define NGTCP2_PKT_TYPE_RETRY_V1 0x3 + +/* NGTCP2_PKT_TYPE_INITIAL_V2 is Initial long header packet type for + QUIC v2. */ +#define NGTCP2_PKT_TYPE_INITIAL_V2 0x1 +/* NGTCP2_PKT_TYPE_0RTT_V2 is 0RTT long header packet type for QUIC + v2. */ +#define NGTCP2_PKT_TYPE_0RTT_V2 0x2 +/* NGTCP2_PKT_TYPE_HANDSHAKE_V2 is Handshake long header packet type + for QUIC v2. */ +#define NGTCP2_PKT_TYPE_HANDSHAKE_V2 0x3 +/* NGTCP2_PKT_TYPE_RETRY_V2 is Retry long header packet type for QUIC + v2. */ +#define NGTCP2_PKT_TYPE_RETRY_V2 0x0 + +typedef struct ngtcp2_pkt_retry { + ngtcp2_cid odcid; + uint8_t *token; + size_t tokenlen; + uint8_t tag[NGTCP2_RETRY_TAGLEN]; +} ngtcp2_pkt_retry; + +#define NGTCP2_FRAME_PADDING 0x00 +#define NGTCP2_FRAME_PING 0x01 +#define NGTCP2_FRAME_ACK 0x02 +#define NGTCP2_FRAME_ACK_ECN 0x03 +#define NGTCP2_FRAME_RESET_STREAM 0x04 +#define NGTCP2_FRAME_STOP_SENDING 0x05 +#define NGTCP2_FRAME_CRYPTO 0x06 +#define NGTCP2_FRAME_NEW_TOKEN 0x07 +#define NGTCP2_FRAME_STREAM 0x08 +#define NGTCP2_FRAME_MAX_DATA 0x10 +#define NGTCP2_FRAME_MAX_STREAM_DATA 0x11 +#define NGTCP2_FRAME_MAX_STREAMS_BIDI 0x12 +#define NGTCP2_FRAME_MAX_STREAMS_UNI 0x13 +#define NGTCP2_FRAME_DATA_BLOCKED 0x14 +#define NGTCP2_FRAME_STREAM_DATA_BLOCKED 0x15 +#define NGTCP2_FRAME_STREAMS_BLOCKED_BIDI 0x16 +#define NGTCP2_FRAME_STREAMS_BLOCKED_UNI 0x17 +#define NGTCP2_FRAME_NEW_CONNECTION_ID 0x18 +#define NGTCP2_FRAME_RETIRE_CONNECTION_ID 0x19 +#define NGTCP2_FRAME_PATH_CHALLENGE 0x1a +#define NGTCP2_FRAME_PATH_RESPONSE 0x1b +#define NGTCP2_FRAME_CONNECTION_CLOSE 0x1c +#define NGTCP2_FRAME_CONNECTION_CLOSE_APP 0x1d +#define NGTCP2_FRAME_HANDSHAKE_DONE 0x1e +#define NGTCP2_FRAME_DATAGRAM 0x30 +#define NGTCP2_FRAME_DATAGRAM_LEN 0x31 + +/* ngtcp2_stream represents STREAM and CRYPTO frames. */ +typedef struct ngtcp2_stream { + uint64_t type; + /** + * flags of decoded STREAM frame. This gets ignored when encoding + * STREAM frame. CRYPTO frame does not include this field, and must + * set it to 0. + */ + uint8_t flags; + /* CRYPTO frame does not include this field, and must set it to + 0. */ + uint8_t fin; + /* CRYPTO frame does not include this field, and must set it to + 0. */ + int64_t stream_id; + uint64_t offset; + /* datacnt is the number of elements that data contains. Although + the length of data is 1 in this definition, the library may + allocate extra bytes to hold more elements. */ + size_t datacnt; + /* data is the array of ngtcp2_vec which references data. */ + ngtcp2_vec data[1]; +} ngtcp2_stream; + +typedef struct ngtcp2_ack_range { + uint64_t gap; + uint64_t len; +} ngtcp2_ack_range; + +typedef struct ngtcp2_ack { + uint64_t type; + int64_t largest_ack; + uint64_t ack_delay; + /** + * ack_delay_unscaled is an ack_delay multiplied by + * 2**ack_delay_component * NGTCP2_MICROSECONDS. + */ + ngtcp2_duration ack_delay_unscaled; + struct { + uint64_t ect0; + uint64_t ect1; + uint64_t ce; + } ecn; + uint64_t first_ack_range; + size_t rangecnt; + ngtcp2_ack_range ranges[1]; +} ngtcp2_ack; + +typedef struct ngtcp2_padding { + uint64_t type; + /** + * The length of contiguous PADDING frames. + */ + size_t len; +} ngtcp2_padding; + +typedef struct ngtcp2_reset_stream { + uint64_t type; + int64_t stream_id; + uint64_t app_error_code; + uint64_t final_size; +} ngtcp2_reset_stream; + +typedef struct ngtcp2_connection_close { + uint64_t type; + uint64_t error_code; + uint64_t frame_type; + size_t reasonlen; + uint8_t *reason; +} ngtcp2_connection_close; + +typedef struct ngtcp2_max_data { + uint64_t type; + /** + * max_data is Maximum Data. + */ + uint64_t max_data; +} ngtcp2_max_data; + +typedef struct ngtcp2_max_stream_data { + uint64_t type; + int64_t stream_id; + uint64_t max_stream_data; +} ngtcp2_max_stream_data; + +typedef struct ngtcp2_max_streams { + uint64_t type; + uint64_t max_streams; +} ngtcp2_max_streams; + +typedef struct ngtcp2_ping { + uint64_t type; +} ngtcp2_ping; + +typedef struct ngtcp2_data_blocked { + uint64_t type; + uint64_t offset; +} ngtcp2_data_blocked; + +typedef struct ngtcp2_stream_data_blocked { + uint64_t type; + int64_t stream_id; + uint64_t offset; +} ngtcp2_stream_data_blocked; + +typedef struct ngtcp2_streams_blocked { + uint64_t type; + uint64_t max_streams; +} ngtcp2_streams_blocked; + +typedef struct ngtcp2_new_connection_id { + uint64_t type; + uint64_t seq; + uint64_t retire_prior_to; + ngtcp2_cid cid; + uint8_t stateless_reset_token[NGTCP2_STATELESS_RESET_TOKENLEN]; +} ngtcp2_new_connection_id; + +typedef struct ngtcp2_stop_sending { + uint64_t type; + int64_t stream_id; + uint64_t app_error_code; +} ngtcp2_stop_sending; + +typedef struct ngtcp2_path_challenge { + uint64_t type; + uint8_t data[NGTCP2_PATH_CHALLENGE_DATALEN]; +} ngtcp2_path_challenge; + +typedef struct ngtcp2_path_response { + uint64_t type; + uint8_t data[NGTCP2_PATH_CHALLENGE_DATALEN]; +} ngtcp2_path_response; + +typedef struct ngtcp2_new_token { + uint64_t type; + uint8_t *token; + size_t tokenlen; +} ngtcp2_new_token; + +typedef struct ngtcp2_retire_connection_id { + uint64_t type; + uint64_t seq; +} ngtcp2_retire_connection_id; + +typedef struct ngtcp2_handshake_done { + uint64_t type; +} ngtcp2_handshake_done; + +typedef struct ngtcp2_datagram { + uint64_t type; + /* dgram_id is an opaque identifier chosen by an application. */ + uint64_t dgram_id; + /* datacnt is the number of elements that data contains. */ + size_t datacnt; + /* data is a pointer to ngtcp2_vec array that stores data. */ + ngtcp2_vec *data; + /* rdata is conveniently embedded to ngtcp2_datagram, so that data + field can just point to the address of this field to store a + single vector which is the case when DATAGRAM is received from a + remote endpoint. */ + ngtcp2_vec rdata[1]; +} ngtcp2_datagram; + +typedef union ngtcp2_frame { + uint64_t type; + ngtcp2_stream stream; + ngtcp2_ack ack; + ngtcp2_padding padding; + ngtcp2_reset_stream reset_stream; + ngtcp2_connection_close connection_close; + ngtcp2_max_data max_data; + ngtcp2_max_stream_data max_stream_data; + ngtcp2_max_streams max_streams; + ngtcp2_ping ping; + ngtcp2_data_blocked data_blocked; + ngtcp2_stream_data_blocked stream_data_blocked; + ngtcp2_streams_blocked streams_blocked; + ngtcp2_new_connection_id new_connection_id; + ngtcp2_stop_sending stop_sending; + ngtcp2_path_challenge path_challenge; + ngtcp2_path_response path_response; + ngtcp2_new_token new_token; + ngtcp2_retire_connection_id retire_connection_id; + ngtcp2_handshake_done handshake_done; + ngtcp2_datagram datagram; + /* Extend ngtcp2_frame so that ngtcp2_stream has at least additional + 3 ngtcp2_vec, totaling 4 slots, which can store HEADERS header, + HEADERS payload, DATA header, and DATA payload in the standard + sized ngtcp2_frame_chain. */ + uint8_t pad[sizeof(ngtcp2_stream) + sizeof(ngtcp2_vec) * 3]; +} ngtcp2_frame; + +typedef struct ngtcp2_pkt_chain ngtcp2_pkt_chain; + +/* + * ngtcp2_pkt_chain is the chain of incoming packets buffered. + */ +struct ngtcp2_pkt_chain { + ngtcp2_path_storage path; + ngtcp2_pkt_info pi; + ngtcp2_pkt_chain *next; + uint8_t *pkt; + /* pktlen is length of a QUIC packet. */ + size_t pktlen; + /* dgramlen is length of UDP datagram payload that a QUIC packet is + included. */ + size_t dgramlen; + ngtcp2_tstamp ts; +}; + +/* + * ngtcp2_pkt_chain_new allocates ngtcp2_pkt_chain objects, and + * assigns its pointer to |*ppc|. The content of buffer pointed by + * |pkt| of length |pktlen| is copied into |*ppc|. The packet is + * obtained via the network |path|. The values of path->local and + * path->remote are copied into |*ppc|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_pkt_chain_new(ngtcp2_pkt_chain **ppc, const ngtcp2_path *path, + const ngtcp2_pkt_info *pi, const uint8_t *pkt, + size_t pktlen, size_t dgramlen, ngtcp2_tstamp ts, + const ngtcp2_mem *mem); + +/* + * ngtcp2_pkt_chain_del deallocates |pc|. It also frees the memory + * pointed by |pc|. + */ +void ngtcp2_pkt_chain_del(ngtcp2_pkt_chain *pc, const ngtcp2_mem *mem); + +/* + * ngtcp2_pkt_hd_init initializes |hd| with the given values. If + * |dcid| and/or |scid| is NULL, Destination Connection ID and/or + * Source Connection ID of |hd| is empty respectively. |pkt_numlen| + * is the number of bytes used to encode |pkt_num| and either 1, 2, or + * 4. |version| is QUIC version for long header. |len| is the length + * field of Initial, 0RTT, and Handshake packets. + */ +void ngtcp2_pkt_hd_init(ngtcp2_pkt_hd *hd, uint8_t flags, uint8_t type, + const ngtcp2_cid *dcid, const ngtcp2_cid *scid, + int64_t pkt_num, size_t pkt_numlen, uint32_t version, + size_t len); + +/* + * ngtcp2_pkt_encode_hd_long encodes |hd| as QUIC long header into + * |out| which has length |outlen|. It returns the number of bytes + * written into |out| if it succeeds, or one of the following negative + * error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer is too short + */ +ngtcp2_ssize ngtcp2_pkt_encode_hd_long(uint8_t *out, size_t outlen, + const ngtcp2_pkt_hd *hd); + +/* + * ngtcp2_pkt_encode_hd_short encodes |hd| as QUIC short header into + * |out| which has length |outlen|. It returns the number of bytes + * written into |out| if it succeeds, or one of the following negative + * error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer is too short + */ +ngtcp2_ssize ngtcp2_pkt_encode_hd_short(uint8_t *out, size_t outlen, + const ngtcp2_pkt_hd *hd); + +/** + * @function + * + * `ngtcp2_pkt_decode_frame` decodes a QUIC frame from the buffer + * pointed by |payload| whose length is |payloadlen|. + * + * This function returns the number of bytes read to decode a single + * frame if it succeeds, or one of the following negative error codes: + * + * :enum:`NGTCP2_ERR_FRAME_ENCODING` + * Frame is badly formatted; or frame type is unknown; or + * |payloadlen| is 0. + */ +ngtcp2_ssize ngtcp2_pkt_decode_frame(ngtcp2_frame *dest, const uint8_t *payload, + size_t payloadlen); + +/** + * @function + * + * `ngtcp2_pkt_encode_frame` encodes a frame |fr| into the buffer + * pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written to the buffer, or + * one of the following negative error codes: + * + * :enum:`NGTCP2_ERR_NOBUF` + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize ngtcp2_pkt_encode_frame(uint8_t *out, size_t outlen, + ngtcp2_frame *fr); + +/* + * ngtcp2_pkt_decode_version_negotiation decodes Version Negotiation + * packet payload |payload| of length |payloadlen|, and stores the + * result in |dest|. |dest| must have enough capacity to store the + * result. |payloadlen| also must be a multiple of sizeof(uint32_t). + * + * This function returns the number of versions written in |dest|. + */ +size_t ngtcp2_pkt_decode_version_negotiation(uint32_t *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_stateless_reset decodes Stateless Reset payload + * |payload| of length |payloadlen|. The |payload| must start with + * Stateless Reset Token. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_INVALID_ARGUMENT + * Payloadlen is too short. + */ +int ngtcp2_pkt_decode_stateless_reset(ngtcp2_pkt_stateless_reset *sr, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_retry decodes Retry packet payload |payload| of + * length |payloadlen|. The |payload| must start with Retry token + * field. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_INVALID_ARGUMENT + * Payloadlen is too short. + */ +int ngtcp2_pkt_decode_retry(ngtcp2_pkt_retry *dest, const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_stream_frame decodes STREAM frame from |payload| + * of length |payloadlen|. The result is stored in the object pointed + * by |dest|. STREAM frame must start at payload[0]. This function + * finishes when it decodes one STREAM frame, and returns the exact + * number of bytes read to decode a frame if it succeeds, or one of + * the following negative error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include STREAM frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_stream_frame(ngtcp2_stream *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_ack_frame decodes ACK frame from |payload| of + * length |payloadlen|. The result is stored in the object pointed by + * |dest|. ACK frame must start at payload[0]. This function + * finishes when it decodes one ACK frame, and returns the exact + * number of bytes read to decode a frame if it succeeds, or one of + * the following negative error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include ACK frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_ack_frame(ngtcp2_ack *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_padding_frame decodes contiguous PADDING frames + * from |payload| of length |payloadlen|. It continues to parse + * frames as long as the frame type is PADDING. It finishes when it + * encounters the frame type which is not PADDING, or all input data + * is read. The first byte (payload[0]) must be NGTCP2_FRAME_PADDING. + * This function returns the exact number of bytes read to decode + * PADDING frames. + */ +ngtcp2_ssize ngtcp2_pkt_decode_padding_frame(ngtcp2_padding *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_reset_stream_frame decodes RESET_STREAM frame + * from |payload| of length |payloadlen|. The result is stored in the + * object pointed by |dest|. RESET_STREAM frame must start at + * payload[0]. This function finishes when it decodes one + * RESET_STREAM frame, and returns the exact number of bytes read to + * decode a frame if it succeeds, or one of the following negative + * error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include RESET_STREAM frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_reset_stream_frame(ngtcp2_reset_stream *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_connection_close_frame decodes CONNECTION_CLOSE + * frame from |payload| of length |payloadlen|. The result is stored + * in the object pointed by |dest|. CONNECTION_CLOSE frame must start + * at payload[0]. This function finishes when it decodes one + * CONNECTION_CLOSE frame, and returns the exact number of bytes read + * to decode a frame if it succeeds, or one of the following negative + * error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include CONNECTION_CLOSE frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_connection_close_frame( + ngtcp2_connection_close *dest, const uint8_t *payload, size_t payloadlen); + +/* + * ngtcp2_pkt_decode_max_data_frame decodes MAX_DATA frame from + * |payload| of length |payloadlen|. The result is stored in the + * object pointed by |dest|. MAX_DATA frame must start at payload[0]. + * This function finishes when it decodes one MAX_DATA frame, and + * returns the exact number of bytes read to decode a frame if it + * succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include MAX_DATA frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_max_data_frame(ngtcp2_max_data *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_max_stream_data_frame decodes MAX_STREAM_DATA + * frame from |payload| of length |payloadlen|. The result is stored + * in the object pointed by |dest|. MAX_STREAM_DATA frame must start + * at payload[0]. This function finishes when it decodes one + * MAX_STREAM_DATA frame, and returns the exact number of bytes read + * to decode a frame if it succeeds, or one of the following negative + * error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include MAX_STREAM_DATA frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_max_stream_data_frame( + ngtcp2_max_stream_data *dest, const uint8_t *payload, size_t payloadlen); + +/* + * ngtcp2_pkt_decode_max_streams_frame decodes MAX_STREAMS frame from + * |payload| of length |payloadlen|. The result is stored in the + * object pointed by |dest|. MAX_STREAMS frame must start at + * payload[0]. This function finishes when it decodes one MAX_STREAMS + * frame, and returns the exact number of bytes read to decode a frame + * if it succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include MAX_STREAMS frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_max_streams_frame(ngtcp2_max_streams *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_ping_frame decodes PING frame from |payload| of + * length |payloadlen|. The result is stored in the object pointed by + * |dest|. PING frame must start at payload[0]. This function + * finishes when it decodes one PING frame, and returns the exact + * number of bytes read to decode a frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_ping_frame(ngtcp2_ping *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_data_blocked_frame decodes DATA_BLOCKED frame + * from |payload| of length |payloadlen|. The result is stored in the + * object pointed by |dest|. DATA_BLOCKED frame must start at + * payload[0]. This function finishes when it decodes one + * DATA_BLOCKED frame, and returns the exact number of bytes read to + * decode a frame if it succeeds, or one of the following negative + * error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include DATA_BLOCKED frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_data_blocked_frame(ngtcp2_data_blocked *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_stream_data_blocked_frame decodes + * STREAM_DATA_BLOCKED frame from |payload| of length |payloadlen|. + * The result is stored in the object pointed by |dest|. + * STREAM_DATA_BLOCKED frame must start at payload[0]. This function + * finishes when it decodes one STREAM_DATA_BLOCKED frame, and returns + * the exact number of bytes read to decode a frame if it succeeds, or + * one of the following negative error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include STREAM_DATA_BLOCKED frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_stream_data_blocked_frame( + ngtcp2_stream_data_blocked *dest, const uint8_t *payload, size_t payloadlen); + +/* + * ngtcp2_pkt_decode_streams_blocked_frame decodes STREAMS_BLOCKED + * frame from |payload| of length |payloadlen|. The result is stored + * in the object pointed by |dest|. STREAMS_BLOCKED frame must start + * at payload[0]. This function finishes when it decodes one + * STREAMS_BLOCKED frame, and returns the exact number of bytes read + * to decode a frame if it succeeds, or one of the following negative + * error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include STREAMS_BLOCKED frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_streams_blocked_frame( + ngtcp2_streams_blocked *dest, const uint8_t *payload, size_t payloadlen); + +/* + * ngtcp2_pkt_decode_new_connection_id_frame decodes NEW_CONNECTION_ID + * frame from |payload| of length |payloadlen|. The result is stored + * in the object pointed by |dest|. NEW_CONNECTION_ID frame must + * start at payload[0]. This function finishes when it decodes one + * NEW_CONNECTION_ID frame, and returns the exact number of bytes read + * to decode a frame if it succeeds, or one of the following negative + * error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include NEW_CONNECTION_ID frame; or the + * length of Connection ID is strictly less than NGTCP2_MIN_CIDLEN + * or greater than NGTCP2_MAX_CIDLEN. + */ +ngtcp2_ssize ngtcp2_pkt_decode_new_connection_id_frame( + ngtcp2_new_connection_id *dest, const uint8_t *payload, size_t payloadlen); + +/* + * ngtcp2_pkt_decode_stop_sending_frame decodes STOP_SENDING frame + * from |payload| of length |payloadlen|. The result is stored in the + * object pointed by |dest|. STOP_SENDING frame must start at + * payload[0]. This function finishes when it decodes one + * STOP_SENDING frame, and returns the exact number of bytes read to + * decode a frame if it succeeds, or one of the following negative + * error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include STOP_SENDING frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_stop_sending_frame(ngtcp2_stop_sending *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_path_challenge_frame decodes PATH_CHALLENGE frame + * from |payload| of length |payloadlen|. The result is stored in the + * object pointed by |dest|. PATH_CHALLENGE frame must start at + * payload[0]. This function finishes when it decodes one + * PATH_CHALLENGE frame, and returns the exact number of bytes read to + * decode a frame if it succeeds, or one of the following negative + * error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include PATH_CHALLENGE frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_path_challenge_frame(ngtcp2_path_challenge *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_path_response_frame decodes PATH_RESPONSE frame + * from |payload| of length |payloadlen|. The result is stored in the + * object pointed by |dest|. PATH_RESPONSE frame must start at + * payload[0]. This function finishes when it decodes one + * PATH_RESPONSE frame, and returns the exact number of bytes read to + * decode a frame if it succeeds, or one of the following negative + * error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include PATH_RESPONSE frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_path_response_frame(ngtcp2_path_response *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_crypto_frame decodes CRYPTO frame from |payload| + * of length |payloadlen|. The result is stored in the object pointed + * by |dest|. CRYPTO frame must start at payload[0]. This function + * finishes when it decodes one CRYPTO frame, and returns the exact + * number of bytes read to decode a frame if it succeeds, or one of + * the following negative error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include CRYPTO frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_crypto_frame(ngtcp2_stream *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_new_token_frame decodes NEW_TOKEN frame from + * |payload| of length |payloadlen|. The result is stored in the + * object pointed by |dest|. NEW_TOKEN frame must start at + * payload[0]. This function finishes when it decodes one NEW_TOKEN + * frame, and returns the exact number of bytes read to decode a frame + * if it succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include NEW_TOKEN frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_new_token_frame(ngtcp2_new_token *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_retire_connection_id_frame decodes + * RETIRE_CONNECTION_ID frame from |payload| of length |payloadlen|. + * The result is stored in the object pointed by |dest|. + * RETIRE_CONNECTION_ID frame must start at payload[0]. This function + * finishes when it decodes one RETIRE_CONNECTION_ID frame, and + * returns the exact number of bytes read to decode a frame if it + * succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include RETIRE_CONNECTION_ID frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_retire_connection_id_frame( + ngtcp2_retire_connection_id *dest, const uint8_t *payload, size_t payloadlen); + +/* + * ngtcp2_pkt_decode_handshake_done_frame decodes HANDSHAKE_DONE frame + * from |payload| of length |payloadlen|. The result is stored in the + * object pointed by |dest|. HANDSHAKE_DONE frame must start at + * payload[0]. This function finishes when it decodes one + * HANDSHAKE_DONE frame, and returns the exact number of bytes read to + * decode a frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_handshake_done_frame(ngtcp2_handshake_done *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_decode_datagram_frame decodes DATAGRAM frame from + * |payload| of length |payloadlen|. The result is stored in the + * object pointed by |dest|. DATAGRAM frame must start at payload[0]. + * This function finishes when it decodes one DATAGRAM frame, and + * returns the exact number of bytes read to decode a frame if it + * succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_FRAME_ENCODING + * Payload is too short to include DATAGRAM frame. + */ +ngtcp2_ssize ngtcp2_pkt_decode_datagram_frame(ngtcp2_datagram *dest, + const uint8_t *payload, + size_t payloadlen); + +/* + * ngtcp2_pkt_encode_stream_frame encodes STREAM frame |fr| into the + * buffer pointed by |out| of length |outlen|. + * + * This function assigns <the serialized frame type> & + * ~NGTCP2_FRAME_STREAM to fr->flags. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize ngtcp2_pkt_encode_stream_frame(uint8_t *out, size_t outlen, + ngtcp2_stream *fr); + +/* + * ngtcp2_pkt_encode_ack_frame encodes ACK frame |fr| into the buffer + * pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize ngtcp2_pkt_encode_ack_frame(uint8_t *out, size_t outlen, + const ngtcp2_ack *fr); + +/* + * ngtcp2_pkt_encode_padding_frame encodes PADDING frame |fr| into the + * buffer pointed by |out| of length |outlen|. + * + * This function encodes consecutive fr->len PADDING frames. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write frame(s). + */ +ngtcp2_ssize ngtcp2_pkt_encode_padding_frame(uint8_t *out, size_t outlen, + const ngtcp2_padding *fr); + +/* + * ngtcp2_pkt_encode_reset_stream_frame encodes RESET_STREAM frame + * |fr| into the buffer pointed by |out| of length |buflen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize +ngtcp2_pkt_encode_reset_stream_frame(uint8_t *out, size_t outlen, + const ngtcp2_reset_stream *fr); + +/* + * ngtcp2_pkt_encode_connection_close_frame encodes CONNECTION_CLOSE + * frame |fr| into the buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize +ngtcp2_pkt_encode_connection_close_frame(uint8_t *out, size_t outlen, + const ngtcp2_connection_close *fr); + +/* + * ngtcp2_pkt_encode_max_data_frame encodes MAX_DATA frame |fr| into + * the buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize ngtcp2_pkt_encode_max_data_frame(uint8_t *out, size_t outlen, + const ngtcp2_max_data *fr); + +/* + * ngtcp2_pkt_encode_max_stream_data_frame encodes MAX_STREAM_DATA + * frame |fr| into the buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize +ngtcp2_pkt_encode_max_stream_data_frame(uint8_t *out, size_t outlen, + const ngtcp2_max_stream_data *fr); + +/* + * ngtcp2_pkt_encode_max_streams_frame encodes MAX_STREAMS + * frame |fr| into the buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize ngtcp2_pkt_encode_max_streams_frame(uint8_t *out, size_t outlen, + const ngtcp2_max_streams *fr); + +/* + * ngtcp2_pkt_encode_ping_frame encodes PING frame |fr| into the + * buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize ngtcp2_pkt_encode_ping_frame(uint8_t *out, size_t outlen, + const ngtcp2_ping *fr); + +/* + * ngtcp2_pkt_encode_data_blocked_frame encodes DATA_BLOCKED frame + * |fr| into the buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize +ngtcp2_pkt_encode_data_blocked_frame(uint8_t *out, size_t outlen, + const ngtcp2_data_blocked *fr); + +/* + * ngtcp2_pkt_encode_stream_data_blocked_frame encodes + * STREAM_DATA_BLOCKED frame |fr| into the buffer pointed by |out| of + * length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize ngtcp2_pkt_encode_stream_data_blocked_frame( + uint8_t *out, size_t outlen, const ngtcp2_stream_data_blocked *fr); + +/* + * ngtcp2_pkt_encode_streams_blocked_frame encodes STREAMS_BLOCKED + * frame |fr| into the buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize +ngtcp2_pkt_encode_streams_blocked_frame(uint8_t *out, size_t outlen, + const ngtcp2_streams_blocked *fr); + +/* + * ngtcp2_pkt_encode_new_connection_id_frame encodes NEW_CONNECTION_ID + * frame |fr| into the buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize +ngtcp2_pkt_encode_new_connection_id_frame(uint8_t *out, size_t outlen, + const ngtcp2_new_connection_id *fr); + +/* + * ngtcp2_pkt_encode_stop_sending_frame encodes STOP_SENDING frame + * |fr| into the buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize +ngtcp2_pkt_encode_stop_sending_frame(uint8_t *out, size_t outlen, + const ngtcp2_stop_sending *fr); + +/* + * ngtcp2_pkt_encode_path_challenge_frame encodes PATH_CHALLENGE frame + * |fr| into the buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize +ngtcp2_pkt_encode_path_challenge_frame(uint8_t *out, size_t outlen, + const ngtcp2_path_challenge *fr); + +/* + * ngtcp2_pkt_encode_path_response_frame encodes PATH_RESPONSE frame + * |fr| into the buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize +ngtcp2_pkt_encode_path_response_frame(uint8_t *out, size_t outlen, + const ngtcp2_path_response *fr); + +/* + * ngtcp2_pkt_encode_crypto_frame encodes CRYPTO frame |fr| into the + * buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize ngtcp2_pkt_encode_crypto_frame(uint8_t *out, size_t outlen, + const ngtcp2_stream *fr); + +/* + * ngtcp2_pkt_encode_new_token_frame encodes NEW_TOKEN frame |fr| into + * the buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize ngtcp2_pkt_encode_new_token_frame(uint8_t *out, size_t outlen, + const ngtcp2_new_token *fr); + +/* + * ngtcp2_pkt_encode_retire_connection_id_frame encodes + * RETIRE_CONNECTION_ID frame |fr| into the buffer pointed by |out| of + * length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize ngtcp2_pkt_encode_retire_connection_id_frame( + uint8_t *out, size_t outlen, const ngtcp2_retire_connection_id *fr); + +/* + * ngtcp2_pkt_encode_handshake_done_frame encodes HANDSHAKE_DONE frame + * |fr| into the buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize +ngtcp2_pkt_encode_handshake_done_frame(uint8_t *out, size_t outlen, + const ngtcp2_handshake_done *fr); + +/* + * ngtcp2_pkt_encode_datagram_frame encodes DATAGRAM frame |fr| into + * the buffer pointed by |out| of length |outlen|. + * + * This function returns the number of bytes written if it succeeds, + * or one of the following negative error codes: + * + * NGTCP2_ERR_NOBUF + * Buffer does not have enough capacity to write a frame. + */ +ngtcp2_ssize ngtcp2_pkt_encode_datagram_frame(uint8_t *out, size_t outlen, + const ngtcp2_datagram *fr); + +/* + * ngtcp2_pkt_adjust_pkt_num finds the full 62 bits packet number for + * |pkt_num|, which is encoded in |pkt_numlen| bytes. The + * |max_pkt_num| is the highest successfully authenticated packet + * number. + */ +int64_t ngtcp2_pkt_adjust_pkt_num(int64_t max_pkt_num, int64_t pkt_num, + size_t pkt_numlen); + +/* + * ngtcp2_pkt_validate_ack verifies whether |fr| is malformed or not. + * |min_pkt_num| is the minimum packet number that a local endpoint + * sends. It is an error to receive acknowledgements for a packet + * less than |min_pkt_num|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_ACK_FRAME + * ACK frame is malformed + * NGTCP2_ERR_PROTO + * |fr| contains a packet number less than |min_pkt_num|. + */ +int ngtcp2_pkt_validate_ack(const ngtcp2_ack *fr, int64_t min_pkt_num); + +/* + * ngtcp2_pkt_stream_max_datalen returns the maximum number of bytes + * which can be sent for stream denoted by |stream_id|. |offset| is + * an offset within the stream. |len| is the estimated number of + * bytes to send. |left| is the size of buffer. If |left| is too + * small to write STREAM frame, this function returns (size_t)-1. + */ +size_t ngtcp2_pkt_stream_max_datalen(int64_t stream_id, uint64_t offset, + uint64_t len, size_t left); + +/* + * ngtcp2_pkt_crypto_max_datalen returns the maximum number of bytes + * which can be sent for crypto stream. |offset| is an offset within + * the crypto stream. |len| is the estimated number of bytes to send. + * |left| is the size of buffer. If |left| is too small to write + * CRYPTO frame, this function returns (size_t)-1. + */ +size_t ngtcp2_pkt_crypto_max_datalen(uint64_t offset, size_t len, size_t left); + +/* + * ngtcp2_pkt_datagram_framelen returns the length of DATAGRAM frame + * to encode |len| bytes of data. + */ +size_t ngtcp2_pkt_datagram_framelen(size_t len); + +/* + * ngtcp2_pkt_verify_reserved_bits verifies that the first byte |c| of + * the packet header has the correct reserved bits. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_PROTO + * Reserved bits has wrong value. + */ +int ngtcp2_pkt_verify_reserved_bits(uint8_t c); + +/* + * ngtcp2_pkt_encode_pseudo_retry encodes Retry pseudo-packet in the + * buffer pointed by |dest| of length |destlen|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_BUF + * Buffer is too short. + */ +ngtcp2_ssize ngtcp2_pkt_encode_pseudo_retry( + uint8_t *dest, size_t destlen, const ngtcp2_pkt_hd *hd, uint8_t unused, + const ngtcp2_cid *odcid, const uint8_t *token, size_t tokenlen); + +/* + * ngtcp2_pkt_verify_retry_tag verifies Retry packet. The buffer + * pointed by |pkt| of length |pktlen| must contain Retry packet + * including packet header. The odcid and tag fields of |retry| must + * be specified. |aead| must be AEAD_AES_128_GCM. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_PROTO + * Verification failed. + */ +int ngtcp2_pkt_verify_retry_tag(uint32_t version, const ngtcp2_pkt_retry *retry, + const uint8_t *pkt, size_t pktlen, + ngtcp2_encrypt encrypt, + const ngtcp2_crypto_aead *aead, + const ngtcp2_crypto_aead_ctx *aead_ctx); + +/* + * ngtcp2_pkt_versioned_type returns versioned packet type for a + * version |version| that corresponds to the version-independent + * |pkt_type|. + */ +uint8_t ngtcp2_pkt_versioned_type(uint32_t version, uint32_t pkt_type); + +/** + * @function + * + * `ngtcp2_pkt_get_type_long` returns the version-independent long + * packet type. |version| is the QUIC version. |c| is the first byte + * of Long packet header. If |version| is not supported by the + * library, it returns 0. + */ +uint8_t ngtcp2_pkt_get_type_long(uint32_t version, uint8_t c); + +#endif /* !defined(NGTCP2_PKT_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_pktns_id.h b/contrib/libs/ngtcp2/lib/ngtcp2_pktns_id.h new file mode 100644 index 0000000000..9cf8444d32 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_pktns_id.h @@ -0,0 +1,62 @@ +/* + * ngtcp2 + * + * Copyright (c) 2023 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_PKTNS_ID_H +#define NGTCP2_PKTNS_ID_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +/** + * @enum + * + * :type:`ngtcp2_pktns_id` defines packet number space identifier. + */ +typedef enum ngtcp2_pktns_id { + /** + * :enum:`NGTCP2_PKTNS_ID_INITIAL` is the Initial packet number + * space. + */ + NGTCP2_PKTNS_ID_INITIAL, + /** + * :enum:`NGTCP2_PKTNS_ID_HANDSHAKE` is the Handshake packet number + * space. + */ + NGTCP2_PKTNS_ID_HANDSHAKE, + /** + * :enum:`NGTCP2_PKTNS_ID_APPLICATION` is the Application data + * packet number space. + */ + NGTCP2_PKTNS_ID_APPLICATION, + /** + * :enum:`NGTCP2_PKTNS_ID_MAX` is defined to get the number of + * packet number spaces. + */ + NGTCP2_PKTNS_ID_MAX +} ngtcp2_pktns_id; + +#endif /* !defined(NGTCP2_PKTNS_ID_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_pmtud.c b/contrib/libs/ngtcp2/lib/ngtcp2_pmtud.c new file mode 100644 index 0000000000..ebd113f674 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_pmtud.c @@ -0,0 +1,167 @@ +/* + * ngtcp2 + * + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_pmtud.h" + +#include <assert.h> + +#include "ngtcp2_mem.h" +#include "ngtcp2_macro.h" + +/* NGTCP2_PMTUD_PROBE_NUM_MAX is the maximum number of packets sent + for each probe. */ +#define NGTCP2_PMTUD_PROBE_NUM_MAX 3 + +static uint16_t pmtud_default_probes[] = { + 1454 - 48, /* The well known MTU used by a domestic optic fiber + service in Japan. */ + 1390 - 48, /* Typical Tunneled MTU */ + 1280 - 48, /* IPv6 minimum MTU */ + 1492 - 48, /* PPPoE */ +}; + +int ngtcp2_pmtud_new(ngtcp2_pmtud **ppmtud, size_t max_udp_payload_size, + size_t hard_max_udp_payload_size, int64_t tx_pkt_num, + const uint16_t *probes, size_t probeslen, + const ngtcp2_mem *mem) { + ngtcp2_pmtud *pmtud = ngtcp2_mem_malloc(mem, sizeof(ngtcp2_pmtud)); + + if (pmtud == NULL) { + return NGTCP2_ERR_NOMEM; + } + + pmtud->mem = mem; + pmtud->mtu_idx = 0; + pmtud->num_pkts_sent = 0; + pmtud->expiry = UINT64_MAX; + pmtud->tx_pkt_num = tx_pkt_num; + pmtud->max_udp_payload_size = max_udp_payload_size; + pmtud->hard_max_udp_payload_size = hard_max_udp_payload_size; + pmtud->min_fail_udp_payload_size = SIZE_MAX; + + if (probeslen) { + pmtud->probes = probes; + pmtud->probeslen = probeslen; + } else { + pmtud->probes = pmtud_default_probes; + pmtud->probeslen = ngtcp2_arraylen(pmtud_default_probes); + } + + for (; pmtud->mtu_idx < pmtud->probeslen; ++pmtud->mtu_idx) { + if (pmtud->probes[pmtud->mtu_idx] > pmtud->hard_max_udp_payload_size) { + continue; + } + if (pmtud->probes[pmtud->mtu_idx] > pmtud->max_udp_payload_size) { + break; + } + } + + *ppmtud = pmtud; + + return 0; +} + +void ngtcp2_pmtud_del(ngtcp2_pmtud *pmtud) { + if (!pmtud) { + return; + } + + ngtcp2_mem_free(pmtud->mem, pmtud); +} + +size_t ngtcp2_pmtud_probelen(ngtcp2_pmtud *pmtud) { + assert(pmtud->mtu_idx < pmtud->probeslen); + + return pmtud->probes[pmtud->mtu_idx]; +} + +void ngtcp2_pmtud_probe_sent(ngtcp2_pmtud *pmtud, ngtcp2_duration pto, + ngtcp2_tstamp ts) { + ngtcp2_tstamp timeout; + + if (++pmtud->num_pkts_sent < NGTCP2_PMTUD_PROBE_NUM_MAX) { + timeout = pto; + } else { + timeout = 3 * pto; + } + + pmtud->expiry = ts + timeout; +} + +int ngtcp2_pmtud_require_probe(ngtcp2_pmtud *pmtud) { + return pmtud->expiry == UINT64_MAX; +} + +static void pmtud_next_probe(ngtcp2_pmtud *pmtud) { + assert(pmtud->mtu_idx < pmtud->probeslen); + + ++pmtud->mtu_idx; + pmtud->num_pkts_sent = 0; + pmtud->expiry = UINT64_MAX; + + for (; pmtud->mtu_idx < pmtud->probeslen; ++pmtud->mtu_idx) { + if (pmtud->probes[pmtud->mtu_idx] <= pmtud->max_udp_payload_size || + pmtud->probes[pmtud->mtu_idx] > pmtud->hard_max_udp_payload_size) { + continue; + } + + if (pmtud->probes[pmtud->mtu_idx] < pmtud->min_fail_udp_payload_size) { + break; + } + } +} + +void ngtcp2_pmtud_probe_success(ngtcp2_pmtud *pmtud, size_t payloadlen) { + pmtud->max_udp_payload_size = + ngtcp2_max_size(pmtud->max_udp_payload_size, payloadlen); + + assert(pmtud->mtu_idx < pmtud->probeslen); + + if (pmtud->probes[pmtud->mtu_idx] > pmtud->max_udp_payload_size) { + return; + } + + pmtud_next_probe(pmtud); +} + +void ngtcp2_pmtud_handle_expiry(ngtcp2_pmtud *pmtud, ngtcp2_tstamp ts) { + if (ts < pmtud->expiry) { + return; + } + + pmtud->expiry = UINT64_MAX; + + if (pmtud->num_pkts_sent < NGTCP2_PMTUD_PROBE_NUM_MAX) { + return; + } + + pmtud->min_fail_udp_payload_size = ngtcp2_min_size( + pmtud->min_fail_udp_payload_size, pmtud->probes[pmtud->mtu_idx]); + + pmtud_next_probe(pmtud); +} + +int ngtcp2_pmtud_finished(ngtcp2_pmtud *pmtud) { + return pmtud->mtu_idx >= pmtud->probeslen; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_pmtud.h b/contrib/libs/ngtcp2/lib/ngtcp2_pmtud.h new file mode 100644 index 0000000000..53fc6a5382 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_pmtud.h @@ -0,0 +1,132 @@ +/* + * ngtcp2 + * + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_PMTUD_H +#define NGTCP2_PMTUD_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +typedef struct ngtcp2_pmtud { + const ngtcp2_mem *mem; + /* mtu_idx is the index of UDP payload size candidates to try + out. */ + size_t mtu_idx; + /* num_pkts_sent is the number of mtu_idx sized UDP datagram payload + sent */ + size_t num_pkts_sent; + /* expiry is the expired, if it is reached, send out the next UDP + datagram. UINT64_MAX means no expiry, or expiration is canceled. + In either case, new probe packet should be sent unless we have + done all attempts. */ + ngtcp2_tstamp expiry; + /* tx_pkt_num is the smallest outgoing packet number where the + current discovery is performed. In other words, acknowledging + packet whose packet number lower than that does not indicate the + success of Path MTU Discovery. */ + int64_t tx_pkt_num; + /* max_udp_payload_size is the maximum UDP payload size which is + known to work. */ + size_t max_udp_payload_size; + /* hard_max_udp_payload_size is the maximum UDP payload size that is + going to be probed. */ + size_t hard_max_udp_payload_size; + /* min_fail_udp_payload_size is the minimum UDP payload size that is + known to fail. */ + size_t min_fail_udp_payload_size; + /* probes is the array of UDP datagram payload size to probe. */ + const uint16_t *probes; + /* probeslen is the number of probes pointed by probes. */ + size_t probeslen; +} ngtcp2_pmtud; + +/* + * ngtcp2_pmtud_new creates new ngtcp2_pmtud object, and assigns its + * pointer to |*ppmtud|. |max_udp_payload_size| is the maximum UDP + * payload size that is known to work for the current path. + * |tx_pkt_num| should be the next packet number to send, which is + * used to differentiate the PMTUD probe packet sent by the previous + * PMTUD. PMTUD might finish immediately if |max_udp_payload_size| is + * larger than or equal to all UDP payload probe candidates. + * Therefore, call ngtcp2_pmtud_finished to check this situation. + * + * The array pointed by |pmtud_probes| of length |pmtud_probeslen| + * specifies UDP datagram payload size to probe. If |pmtud_probeslen| + * is zero, the default probes are used. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_pmtud_new(ngtcp2_pmtud **ppmtud, size_t max_udp_payload_size, + size_t hard_max_udp_payload_size, int64_t tx_pkt_num, + const uint16_t *pmtud_probes, size_t pmtud_probeslen, + const ngtcp2_mem *mem); + +/* + * ngtcp2_pmtud_del deletes |pmtud|. + */ +void ngtcp2_pmtud_del(ngtcp2_pmtud *pmtud); + +/* + * ngtcp2_pmtud_probelen returns the length of UDP payload size for a + * PMTUD probe packet. + */ +size_t ngtcp2_pmtud_probelen(ngtcp2_pmtud *pmtud); + +/* + * ngtcp2_pmtud_probe_sent should be invoked when a PMTUD probe packet is + * sent. + */ +void ngtcp2_pmtud_probe_sent(ngtcp2_pmtud *pmtud, ngtcp2_duration pto, + ngtcp2_tstamp ts); + +/* + * ngtcp2_pmtud_require_probe returns nonzero if a PMTUD probe packet + * should be sent. + */ +int ngtcp2_pmtud_require_probe(ngtcp2_pmtud *pmtud); + +/* + * ngtcp2_pmtud_probe_success should be invoked when a PMTUD probe + * UDP datagram sized |payloadlen| is acknowledged. + */ +void ngtcp2_pmtud_probe_success(ngtcp2_pmtud *pmtud, size_t payloadlen); + +/* + * ngtcp2_pmtud_handle_expiry handles expiry. + */ +void ngtcp2_pmtud_handle_expiry(ngtcp2_pmtud *pmtud, ngtcp2_tstamp ts); + +/* + * ngtcp2_pmtud_finished returns nonzero if PMTUD has finished. + */ +int ngtcp2_pmtud_finished(ngtcp2_pmtud *pmtud); + +#endif /* !defined(NGTCP2_PMTUD_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_ppe.c b/contrib/libs/ngtcp2/lib/ngtcp2_ppe.c new file mode 100644 index 0000000000..13ef2b2490 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_ppe.c @@ -0,0 +1,243 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_ppe.h" + +#include <string.h> +#include <assert.h> + +#include "ngtcp2_str.h" +#include "ngtcp2_conv.h" +#include "ngtcp2_macro.h" + +void ngtcp2_ppe_init(ngtcp2_ppe *ppe, uint8_t *out, size_t outlen, + size_t dgram_offset, ngtcp2_crypto_cc *cc) { + ngtcp2_buf_init(&ppe->buf, out, outlen); + + ppe->dgram_offset = dgram_offset; + ppe->hdlen = 0; + ppe->len_offset = 0; + ppe->pkt_num_offset = 0; + ppe->pkt_numlen = 0; + ppe->pkt_num = 0; + ppe->cc = cc; +} + +int ngtcp2_ppe_encode_hd(ngtcp2_ppe *ppe, const ngtcp2_pkt_hd *hd) { + ngtcp2_ssize rv; + ngtcp2_buf *buf = &ppe->buf; + ngtcp2_crypto_cc *cc = ppe->cc; + + if (ngtcp2_buf_left(buf) < cc->aead.max_overhead) { + return NGTCP2_ERR_NOBUF; + } + + if (hd->flags & NGTCP2_PKT_FLAG_LONG_FORM) { + ppe->len_offset = 1 + 4 + 1 + hd->dcid.datalen + 1 + hd->scid.datalen; + + if (hd->type == NGTCP2_PKT_INITIAL) { + ppe->len_offset += ngtcp2_put_uvarintlen(hd->tokenlen) + hd->tokenlen; + } + + ppe->pkt_num_offset = ppe->len_offset + NGTCP2_PKT_LENGTHLEN; + + rv = ngtcp2_pkt_encode_hd_long( + buf->last, ngtcp2_buf_left(buf) - cc->aead.max_overhead, hd); + } else { + ppe->pkt_num_offset = 1 + hd->dcid.datalen; + + rv = ngtcp2_pkt_encode_hd_short( + buf->last, ngtcp2_buf_left(buf) - cc->aead.max_overhead, hd); + } + + if (rv < 0) { + return (int)rv; + } + + buf->last += rv; + + ppe->pkt_numlen = hd->pkt_numlen; + ppe->hdlen = (size_t)rv; + ppe->pkt_num = hd->pkt_num; + + return 0; +} + +int ngtcp2_ppe_encode_frame(ngtcp2_ppe *ppe, ngtcp2_frame *fr) { + ngtcp2_ssize rv; + ngtcp2_buf *buf = &ppe->buf; + ngtcp2_crypto_cc *cc = ppe->cc; + + if (ngtcp2_buf_left(buf) < cc->aead.max_overhead) { + return NGTCP2_ERR_NOBUF; + } + + rv = ngtcp2_pkt_encode_frame( + buf->last, ngtcp2_buf_left(buf) - cc->aead.max_overhead, fr); + if (rv < 0) { + return (int)rv; + } + + buf->last += rv; + + return 0; +} + +/* + * ppe_sample_offset returns the offset to sample for packet number + * encryption. + */ +static size_t ppe_sample_offset(ngtcp2_ppe *ppe) { + return ppe->pkt_num_offset + 4; +} + +ngtcp2_ssize ngtcp2_ppe_final(ngtcp2_ppe *ppe, const uint8_t **ppkt) { + ngtcp2_buf *buf = &ppe->buf; + ngtcp2_crypto_cc *cc = ppe->cc; + uint8_t *payload = buf->begin + ppe->hdlen; + size_t payloadlen = ngtcp2_buf_len(buf) - ppe->hdlen; + uint8_t mask[NGTCP2_HP_SAMPLELEN]; + uint8_t *p; + size_t i; + int rv; + + assert(cc->encrypt); + assert(cc->hp_mask); + + if (ppe->len_offset) { + ngtcp2_put_uvarint30( + buf->begin + ppe->len_offset, + (uint16_t)(payloadlen + ppe->pkt_numlen + cc->aead.max_overhead)); + } + + ngtcp2_crypto_create_nonce(ppe->nonce, cc->ckm->iv.base, cc->ckm->iv.len, + ppe->pkt_num); + + rv = cc->encrypt(payload, &cc->aead, &cc->ckm->aead_ctx, payload, payloadlen, + ppe->nonce, cc->ckm->iv.len, buf->begin, ppe->hdlen); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + buf->last = payload + payloadlen + cc->aead.max_overhead; + + /* Make sure that we have enough space to get sample */ + assert(ppe_sample_offset(ppe) + NGTCP2_HP_SAMPLELEN <= ngtcp2_buf_len(buf)); + + rv = cc->hp_mask(mask, &cc->hp, &cc->hp_ctx, + buf->begin + ppe_sample_offset(ppe)); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + p = buf->begin; + if (*p & NGTCP2_HEADER_FORM_BIT) { + *p = (uint8_t)(*p ^ (mask[0] & 0x0f)); + } else { + *p = (uint8_t)(*p ^ (mask[0] & 0x1f)); + } + + p = buf->begin + ppe->pkt_num_offset; + for (i = 0; i < ppe->pkt_numlen; ++i) { + *(p + i) ^= mask[i + 1]; + } + + if (ppkt != NULL) { + *ppkt = buf->begin; + } + + return (ngtcp2_ssize)ngtcp2_buf_len(buf); +} + +size_t ngtcp2_ppe_left(const ngtcp2_ppe *ppe) { + ngtcp2_crypto_cc *cc = ppe->cc; + + if (ngtcp2_buf_left(&ppe->buf) < cc->aead.max_overhead) { + return 0; + } + + return ngtcp2_buf_left(&ppe->buf) - cc->aead.max_overhead; +} + +size_t ngtcp2_ppe_pktlen(const ngtcp2_ppe *ppe) { + ngtcp2_crypto_cc *cc = ppe->cc; + + return ngtcp2_buf_len(&ppe->buf) + cc->aead.max_overhead; +} + +size_t ngtcp2_ppe_padding_size(ngtcp2_ppe *ppe, size_t n) { + ngtcp2_crypto_cc *cc = ppe->cc; + ngtcp2_buf *buf = &ppe->buf; + size_t pktlen = ngtcp2_buf_len(buf) + cc->aead.max_overhead; + size_t len = 0; + size_t max_samplelen; + + n = ngtcp2_min_size(n, ngtcp2_buf_cap(buf)); + if (pktlen < n) { + len = n - pktlen; + } + + /* Ensure header protection sample */ + max_samplelen = + ngtcp2_buf_len(buf) + cc->aead.max_overhead - ppe_sample_offset(ppe); + + if (max_samplelen < NGTCP2_HP_SAMPLELEN) { + len = ngtcp2_max_size(len, NGTCP2_HP_SAMPLELEN - max_samplelen); + } + + assert(ngtcp2_buf_left(buf) >= len + cc->aead.max_overhead); + + buf->last = ngtcp2_setmem(buf->last, 0, len); + + return len; +} + +size_t ngtcp2_ppe_dgram_padding(ngtcp2_ppe *ppe) { + return ngtcp2_ppe_dgram_padding_size(ppe, NGTCP2_MAX_UDP_PAYLOAD_SIZE); +} + +size_t ngtcp2_ppe_dgram_padding_size(ngtcp2_ppe *ppe, size_t n) { + ngtcp2_crypto_cc *cc = ppe->cc; + ngtcp2_buf *buf = &ppe->buf; + size_t dgramlen = + ppe->dgram_offset + ngtcp2_buf_len(buf) + cc->aead.max_overhead; + size_t len; + + n = ngtcp2_min_size(n, ppe->dgram_offset + ngtcp2_buf_cap(buf)); + + if (dgramlen >= n) { + return 0; + } + + len = n - dgramlen; + buf->last = ngtcp2_setmem(buf->last, 0, len); + + return len; +} + +int ngtcp2_ppe_ensure_hp_sample(ngtcp2_ppe *ppe) { + ngtcp2_buf *buf = &ppe->buf; + + return ngtcp2_buf_left(buf) >= (4 - ppe->pkt_numlen) + NGTCP2_HP_SAMPLELEN; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_ppe.h b/contrib/libs/ngtcp2/lib/ngtcp2_ppe.h new file mode 100644 index 0000000000..660b1482b5 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_ppe.h @@ -0,0 +1,163 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_PPE_H +#define NGTCP2_PPE_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_pkt.h" +#include "ngtcp2_buf.h" +#include "ngtcp2_crypto.h" + +/* + * ngtcp2_ppe is the QUIC Packet Encoder. + */ +typedef struct ngtcp2_ppe { + /* buf is the buffer where a QUIC packet is written. */ + ngtcp2_buf buf; + /* cc is the encryption context that includes callback functions to + encrypt a QUIC packet, and AEAD cipher, etc. */ + ngtcp2_crypto_cc *cc; + /* dgram_offset is the offset in UDP datagram payload that this QUIC + packet is positioned at. */ + size_t dgram_offset; + /* hdlen is the number of bytes for packet header written in buf. */ + size_t hdlen; + /* len_offset is the offset to Length field. */ + size_t len_offset; + /* pkt_num_offset is the offset to packet number field. */ + size_t pkt_num_offset; + /* pkt_numlen is the number of bytes used to encode a packet + number */ + size_t pkt_numlen; + /* pkt_num is the packet number written in buf. */ + int64_t pkt_num; + /* nonce is the buffer to store nonce. It should be equal or longer + than the length of IV. */ + uint8_t nonce[32]; +} ngtcp2_ppe; + +/* + * ngtcp2_ppe_init initializes |ppe| with the given buffer. + */ +void ngtcp2_ppe_init(ngtcp2_ppe *ppe, uint8_t *out, size_t outlen, + size_t dgram_offset, ngtcp2_crypto_cc *cc); + +/* + * ngtcp2_ppe_encode_hd encodes |hd|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOBUF + * The buffer is too small. + */ +int ngtcp2_ppe_encode_hd(ngtcp2_ppe *ppe, const ngtcp2_pkt_hd *hd); + +/* + * ngtcp2_ppe_encode_frame encodes |fr|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOBUF + * The buffer is too small. + */ +int ngtcp2_ppe_encode_frame(ngtcp2_ppe *ppe, ngtcp2_frame *fr); + +/* + * ngtcp2_ppe_final encrypts QUIC packet payload. If |ppkt| is not + * NULL, the pointer to the packet is assigned to it. + * + * This function returns the length of QUIC packet, including header, + * and payload if it succeeds, or one of the following negative error + * codes: + * + * NGTCP2_ERR_CALLBACK_FAILURE + * User-defined callback function failed. + */ +ngtcp2_ssize ngtcp2_ppe_final(ngtcp2_ppe *ppe, const uint8_t **ppkt); + +/* + * ngtcp2_ppe_left returns the number of bytes left to write + * additional frames. This does not count AEAD overhead. + */ +size_t ngtcp2_ppe_left(const ngtcp2_ppe *ppe); + +/* + * ngtcp2_ppe_pktlen returns the provisional packet length. It + * includes AEAD overhead. + */ +size_t ngtcp2_ppe_pktlen(const ngtcp2_ppe *ppe); + +/* + * ngtcp2_ppe_dgram_padding is equivalent to call + * ngtcp2_ppe_dgram_padding_size(ppe, NGTCP2_MAX_UDP_PAYLOAD_SIZE). + * This function should be called just before calling + * ngtcp2_ppe_final(). + * + * This function returns the number of bytes padded. + */ +size_t ngtcp2_ppe_dgram_padding(ngtcp2_ppe *ppe); + +/* + * ngtcp2_ppe_dgram_padding_size adds PADDING frame so that the size + * of a UDP datagram payload is at least |n| bytes long. If it is + * unable to add PADDING in that way, this function still adds PADDING + * frame as much as possible. This function should be called just + * before calling ngtcp2_ppe_final(). + * + * This function returns the number of bytes added as padding. + */ +size_t ngtcp2_ppe_dgram_padding_size(ngtcp2_ppe *ppe, size_t n); + +/* + * ngtcp2_ppe_padding_size adds PADDING frame so that the size of QUIC + * packet is at least |n| bytes long and the current payload has + * enough space for header protection sample. If it is unable to add + * PADDING at least |n| bytes, this function still adds PADDING frames + * as much as possible. This function also adds PADDING frames so + * that the minimum padding requirement of header protection is met. + * Those padding may be larger than |n| bytes. It is recommended to + * make sure that ngtcp2_ppe_ensure_hp_sample succeeds after writing + * QUIC packet header. This function should be called just before + * calling ngtcp2_ppe_final(). + * + * This function returns the number of bytes added as padding. + */ +size_t ngtcp2_ppe_padding_size(ngtcp2_ppe *ppe, size_t n); + +/* + * ngtcp2_ppe_ensure_hp_sample returns nonzero if the buffer has + * enough space for header protection sample. This should be called + * right after packet header is written. + */ +int ngtcp2_ppe_ensure_hp_sample(ngtcp2_ppe *ppe); + +#endif /* !defined(NGTCP2_PPE_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_pq.c b/contrib/libs/ngtcp2/lib/ngtcp2_pq.c new file mode 100644 index 0000000000..19e3e3e36a --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_pq.c @@ -0,0 +1,179 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_pq.h" + +#include <assert.h> + +#include "ngtcp2_macro.h" + +void ngtcp2_pq_init(ngtcp2_pq *pq, ngtcp2_pq_less less, const ngtcp2_mem *mem) { + pq->q = NULL; + pq->mem = mem; + pq->length = 0; + pq->capacity = 0; + pq->less = less; +} + +void ngtcp2_pq_free(ngtcp2_pq *pq) { + if (!pq) { + return; + } + + ngtcp2_mem_free(pq->mem, pq->q); +} + +static void swap(ngtcp2_pq *pq, size_t i, size_t j) { + ngtcp2_pq_entry *a = pq->q[i]; + ngtcp2_pq_entry *b = pq->q[j]; + + pq->q[i] = b; + b->index = i; + pq->q[j] = a; + a->index = j; +} + +static void bubble_up(ngtcp2_pq *pq, size_t index) { + size_t parent; + + while (index) { + parent = (index - 1) / 2; + if (!pq->less(pq->q[index], pq->q[parent])) { + return; + } + + swap(pq, parent, index); + index = parent; + } +} + +int ngtcp2_pq_push(ngtcp2_pq *pq, ngtcp2_pq_entry *item) { + if (pq->capacity <= pq->length) { + void *nq; + size_t ncapacity; + + ncapacity = ngtcp2_max_size(4, pq->capacity * 2); + + nq = + ngtcp2_mem_realloc(pq->mem, pq->q, ncapacity * sizeof(ngtcp2_pq_entry *)); + if (nq == NULL) { + return NGTCP2_ERR_NOMEM; + } + + pq->capacity = ncapacity; + pq->q = nq; + } + + pq->q[pq->length] = item; + item->index = pq->length; + ++pq->length; + bubble_up(pq, item->index); + + return 0; +} + +ngtcp2_pq_entry *ngtcp2_pq_top(const ngtcp2_pq *pq) { + assert(pq->length); + return pq->q[0]; +} + +static void bubble_down(ngtcp2_pq *pq, size_t index) { + size_t i, j, minindex; + + for (;;) { + j = index * 2 + 1; + minindex = index; + + for (i = 0; i < 2; ++i, ++j) { + if (j >= pq->length) { + break; + } + + if (pq->less(pq->q[j], pq->q[minindex])) { + minindex = j; + } + } + + if (minindex == index) { + return; + } + + swap(pq, index, minindex); + index = minindex; + } +} + +void ngtcp2_pq_pop(ngtcp2_pq *pq) { + assert(pq->length); + + pq->q[0] = pq->q[pq->length - 1]; + pq->q[0]->index = 0; + --pq->length; + bubble_down(pq, 0); +} + +void ngtcp2_pq_remove(ngtcp2_pq *pq, ngtcp2_pq_entry *item) { + assert(pq->q[item->index] == item); + + if (item->index == 0) { + ngtcp2_pq_pop(pq); + return; + } + + if (item->index == pq->length - 1) { + --pq->length; + return; + } + + pq->q[item->index] = pq->q[pq->length - 1]; + pq->q[item->index]->index = item->index; + --pq->length; + + if (pq->less(item, pq->q[item->index])) { + bubble_down(pq, item->index); + } else { + bubble_up(pq, item->index); + } +} + +int ngtcp2_pq_empty(const ngtcp2_pq *pq) { return pq->length == 0; } + +size_t ngtcp2_pq_size(const ngtcp2_pq *pq) { return pq->length; } + +int ngtcp2_pq_each(const ngtcp2_pq *pq, ngtcp2_pq_item_cb fun, void *arg) { + size_t i; + + if (pq->length == 0) { + return 0; + } + + for (i = 0; i < pq->length; ++i) { + if ((*fun)(pq->q[i], arg)) { + return 1; + } + } + + return 0; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_pq.h b/contrib/libs/ngtcp2/lib/ngtcp2_pq.h new file mode 100644 index 0000000000..84961c9143 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_pq.h @@ -0,0 +1,129 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_PQ_H +#define NGTCP2_PQ_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_mem.h" + +/* Implementation of priority queue */ + +/* NGTCP2_PQ_BAD_INDEX is the priority queue index which indicates + that an entry is not queued. Assigning this value to + ngtcp2_pq_entry.index can check that the entry is queued or not. */ +#define NGTCP2_PQ_BAD_INDEX SIZE_MAX + +typedef struct ngtcp2_pq_entry { + size_t index; +} ngtcp2_pq_entry; + +/* ngtcp2_pq_less is a "less" function, that returns nonzero if |lhs| + is considered to be less than |rhs|. */ +typedef int (*ngtcp2_pq_less)(const ngtcp2_pq_entry *lhs, + const ngtcp2_pq_entry *rhs); + +typedef struct ngtcp2_pq { + /* q is a pointer to an array that stores the items. */ + ngtcp2_pq_entry **q; + /* mem is a memory allocator. */ + const ngtcp2_mem *mem; + /* length is the number of items stored. */ + size_t length; + /* capacity is the maximum number of items this queue can store. + This is automatically extended when length is reached to this + limit. */ + size_t capacity; + /* less is the less function to compare items. */ + ngtcp2_pq_less less; +} ngtcp2_pq; + +/* + * ngtcp2_pq_init initializes |pq| with compare function |cmp|. + */ +void ngtcp2_pq_init(ngtcp2_pq *pq, ngtcp2_pq_less less, const ngtcp2_mem *mem); + +/* + * ngtcp2_pq_free deallocates any resources allocated for |pq|. The + * stored items are not freed by this function. + */ +void ngtcp2_pq_free(ngtcp2_pq *pq); + +/* + * ngtcp2_pq_push adds |item| to |pq|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_pq_push(ngtcp2_pq *pq, ngtcp2_pq_entry *item); + +/* + * ngtcp2_pq_top returns item at the top of |pq|. It is undefined if + * |pq| is empty. + */ +ngtcp2_pq_entry *ngtcp2_pq_top(const ngtcp2_pq *pq); + +/* + * ngtcp2_pq_pop pops item at the top of |pq|. The popped item is not + * freed by this function. It is undefined if |pq| is empty. + */ +void ngtcp2_pq_pop(ngtcp2_pq *pq); + +/* + * ngtcp2_pq_empty returns nonzero if |pq| is empty. + */ +int ngtcp2_pq_empty(const ngtcp2_pq *pq); + +/* + * ngtcp2_pq_size returns the number of items |pq| contains. + */ +size_t ngtcp2_pq_size(const ngtcp2_pq *pq); + +typedef int (*ngtcp2_pq_item_cb)(ngtcp2_pq_entry *item, void *arg); + +/* + * ngtcp2_pq_each applies |fun| to each item in |pq|. The |arg| is + * passed as arg parameter to callback function. This function must + * not change the ordering key. If the return value from callback is + * nonzero, this function returns 1 immediately without iterating + * remaining items. Otherwise this function returns 0. + */ +int ngtcp2_pq_each(const ngtcp2_pq *pq, ngtcp2_pq_item_cb fun, void *arg); + +/* + * ngtcp2_pq_remove removes |item| from |pq|. |pq| must contain + * |item| otherwise the behavior is undefined. + */ +void ngtcp2_pq_remove(ngtcp2_pq *pq, ngtcp2_pq_entry *item); + +#endif /* !defined(NGTCP2_PQ_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_pv.c b/contrib/libs/ngtcp2/lib/ngtcp2_pv.c new file mode 100644 index 0000000000..e4fee94eb5 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_pv.c @@ -0,0 +1,172 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_pv.h" + +#include <string.h> +#include <assert.h> + +#include "ngtcp2_mem.h" +#include "ngtcp2_log.h" +#include "ngtcp2_macro.h" +#include "ngtcp2_addr.h" + +void ngtcp2_pv_entry_init(ngtcp2_pv_entry *pvent, const uint8_t *data, + ngtcp2_tstamp expiry, uint8_t flags) { + memcpy(pvent->data, data, sizeof(pvent->data)); + pvent->expiry = expiry; + pvent->flags = flags; +} + +int ngtcp2_pv_new(ngtcp2_pv **ppv, const ngtcp2_dcid *dcid, + ngtcp2_duration timeout, uint8_t flags, ngtcp2_log *log, + const ngtcp2_mem *mem) { + (*ppv) = ngtcp2_mem_malloc(mem, sizeof(ngtcp2_pv)); + if (*ppv == NULL) { + return NGTCP2_ERR_NOMEM; + } + + ngtcp2_static_ringbuf_pv_ents_init(&(*ppv)->ents); + + ngtcp2_dcid_copy(&(*ppv)->dcid, dcid); + + (*ppv)->mem = mem; + (*ppv)->log = log; + (*ppv)->timeout = timeout; + (*ppv)->fallback_pto = 0; + (*ppv)->started_ts = UINT64_MAX; + (*ppv)->probe_pkt_left = NGTCP2_PV_NUM_PROBE_PKT; + (*ppv)->round = 0; + (*ppv)->flags = flags; + + return 0; +} + +void ngtcp2_pv_del(ngtcp2_pv *pv) { + if (pv == NULL) { + return; + } + ngtcp2_mem_free(pv->mem, pv); +} + +void ngtcp2_pv_add_entry(ngtcp2_pv *pv, const uint8_t *data, + ngtcp2_tstamp expiry, uint8_t flags, + ngtcp2_tstamp ts) { + ngtcp2_pv_entry *ent; + + assert(pv->probe_pkt_left); + + if (ngtcp2_ringbuf_len(&pv->ents.rb) == 0) { + pv->started_ts = ts; + } + + ent = ngtcp2_ringbuf_push_back(&pv->ents.rb); + ngtcp2_pv_entry_init(ent, data, expiry, flags); + + pv->flags &= (uint8_t)~NGTCP2_PV_FLAG_CANCEL_TIMER; + --pv->probe_pkt_left; +} + +int ngtcp2_pv_validate(ngtcp2_pv *pv, uint8_t *pflags, const uint8_t *data) { + size_t len = ngtcp2_ringbuf_len(&pv->ents.rb); + size_t i; + ngtcp2_pv_entry *ent; + + if (len == 0) { + return NGTCP2_ERR_INVALID_STATE; + } + + for (i = 0; i < len; ++i) { + ent = ngtcp2_ringbuf_get(&pv->ents.rb, i); + if (memcmp(ent->data, data, sizeof(ent->data)) == 0) { + *pflags = ent->flags; + ngtcp2_log_info(pv->log, NGTCP2_LOG_EVENT_PTV, "path has been validated"); + return 0; + } + } + + return NGTCP2_ERR_INVALID_ARGUMENT; +} + +void ngtcp2_pv_handle_entry_expiry(ngtcp2_pv *pv, ngtcp2_tstamp ts) { + ngtcp2_pv_entry *ent; + + if (ngtcp2_ringbuf_len(&pv->ents.rb) == 0) { + return; + } + + ent = ngtcp2_ringbuf_get(&pv->ents.rb, ngtcp2_ringbuf_len(&pv->ents.rb) - 1); + + if (ent->expiry > ts) { + return; + } + + ++pv->round; + pv->probe_pkt_left = NGTCP2_PV_NUM_PROBE_PKT; +} + +int ngtcp2_pv_should_send_probe(ngtcp2_pv *pv) { + return pv->probe_pkt_left > 0; +} + +int ngtcp2_pv_validation_timed_out(ngtcp2_pv *pv, ngtcp2_tstamp ts) { + ngtcp2_tstamp t; + ngtcp2_pv_entry *ent; + + if (pv->started_ts == UINT64_MAX) { + return 0; + } + + assert(ngtcp2_ringbuf_len(&pv->ents.rb)); + + ent = ngtcp2_ringbuf_get(&pv->ents.rb, ngtcp2_ringbuf_len(&pv->ents.rb) - 1); + + t = pv->started_ts + pv->timeout; + t = ngtcp2_max_uint64(t, ent->expiry); + + return t <= ts; +} + +ngtcp2_tstamp ngtcp2_pv_next_expiry(ngtcp2_pv *pv) { + ngtcp2_pv_entry *ent; + + if ((pv->flags & NGTCP2_PV_FLAG_CANCEL_TIMER) || + ngtcp2_ringbuf_len(&pv->ents.rb) == 0) { + return UINT64_MAX; + } + + ent = ngtcp2_ringbuf_get(&pv->ents.rb, ngtcp2_ringbuf_len(&pv->ents.rb) - 1); + + return ent->expiry; +} + +void ngtcp2_pv_cancel_expired_timer(ngtcp2_pv *pv, ngtcp2_tstamp ts) { + ngtcp2_tstamp expiry = ngtcp2_pv_next_expiry(pv); + + if (expiry > ts) { + return; + } + + pv->flags |= NGTCP2_PV_FLAG_CANCEL_TIMER; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_pv.h b/contrib/libs/ngtcp2/lib/ngtcp2_pv.h new file mode 100644 index 0000000000..7ffa623d17 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_pv.h @@ -0,0 +1,194 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_PV_H +#define NGTCP2_PV_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_cid.h" +#include "ngtcp2_ringbuf.h" + +/* NGTCP2_PV_MAX_ENTRIES is the maximum number of entries that + ngtcp2_pv can contain. It must be power of 2. */ +#define NGTCP2_PV_MAX_ENTRIES 8 +/* NGTCP2_PV_NUM_PROBE_PKT is the number of probe packets containing + PATH_CHALLENGE sent at a time. */ +#define NGTCP2_PV_NUM_PROBE_PKT 2 + +typedef struct ngtcp2_log ngtcp2_log; + +typedef struct ngtcp2_frame_chain ngtcp2_frame_chain; + +/* NGTCP2_PV_ENTRY_FLAG_NONE indicates that no flag is set. */ +#define NGTCP2_PV_ENTRY_FLAG_NONE 0x00u +/* NGTCP2_PV_ENTRY_FLAG_UNDERSIZED indicates that UDP datagram which + contains PATH_CHALLENGE is undersized (< 1200 bytes) */ +#define NGTCP2_PV_ENTRY_FLAG_UNDERSIZED 0x01u + +typedef struct ngtcp2_pv_entry { + /* expiry is the timestamp when this PATH_CHALLENGE expires. */ + ngtcp2_tstamp expiry; + /* flags is zero or more of NGTCP2_PV_ENTRY_FLAG_*. */ + uint8_t flags; + /* data is a byte string included in PATH_CHALLENGE. */ + uint8_t data[8]; +} ngtcp2_pv_entry; + +void ngtcp2_pv_entry_init(ngtcp2_pv_entry *pvent, const uint8_t *data, + ngtcp2_tstamp expiry, uint8_t flags); + +/* NGTCP2_PV_FLAG_NONE indicates no flag is set. */ +#define NGTCP2_PV_FLAG_NONE 0x00u +/* NGTCP2_PV_FLAG_DONT_CARE indicates that the outcome of path + validation should be ignored entirely. */ +#define NGTCP2_PV_FLAG_DONT_CARE 0x01u +/* NGTCP2_PV_FLAG_CANCEL_TIMER indicates that the expiry timer is + cancelled. */ +#define NGTCP2_PV_FLAG_CANCEL_TIMER 0x02u +/* NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE indicates that fallback DCID is + available in ngtcp2_pv. If path validation fails, fallback to the + fallback DCID. If path validation succeeds, fallback DCID is + retired if it does not equal to the current DCID. */ +#define NGTCP2_PV_FLAG_FALLBACK_ON_FAILURE 0x04u +/* NGTCP2_PV_FLAG_PREFERRED_ADDR indicates that client is migrating to + server's preferred address. This flag is only used by client. */ +#define NGTCP2_PV_FLAG_PREFERRED_ADDR 0x10u + +typedef struct ngtcp2_pv ngtcp2_pv; + +ngtcp2_static_ringbuf_def(pv_ents, NGTCP2_PV_MAX_ENTRIES, + sizeof(ngtcp2_pv_entry)); +/* + * ngtcp2_pv is the context of a single path validation. + */ +struct ngtcp2_pv { + const ngtcp2_mem *mem; + ngtcp2_log *log; + /* dcid is DCID and path this path validation uses. */ + ngtcp2_dcid dcid; + /* fallback_dcid is the usually validated DCID and used as a + fallback if this path validation fails. */ + ngtcp2_dcid fallback_dcid; + /* ents is the ring buffer of ngtcp2_pv_entry */ + ngtcp2_static_ringbuf_pv_ents ents; + /* timeout is the duration within which this path validation should + succeed. */ + ngtcp2_duration timeout; + /* fallback_pto is PTO of fallback connection. */ + ngtcp2_duration fallback_pto; + /* started_ts is the timestamp this path validation starts. */ + ngtcp2_tstamp started_ts; + /* round is the number of times that probe_pkt_left is reset. */ + size_t round; + /* probe_pkt_left is the number of probe packets containing + PATH_CHALLENGE which can be send without waiting for an + expiration of a previous flight. */ + size_t probe_pkt_left; + /* flags is bitwise-OR of zero or more of NGTCP2_PV_FLAG_*. */ + uint8_t flags; +}; + +/* + * ngtcp2_pv_new creates new ngtcp2_pv object and assigns its pointer + * to |*ppv|. This function makes a copy of |dcid|. |timeout| is a + * duration within which this path validation must succeed. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + */ +int ngtcp2_pv_new(ngtcp2_pv **ppv, const ngtcp2_dcid *dcid, + ngtcp2_duration timeout, uint8_t flags, ngtcp2_log *log, + const ngtcp2_mem *mem); + +/* + * ngtcp2_pv_del deallocates |pv|. This function frees memory |pv| + * points too. + */ +void ngtcp2_pv_del(ngtcp2_pv *pv); + +/* + * ngtcp2_pv_add_entry adds new entry with |data|. |expiry| is the + * expiry time of the entry. + */ +void ngtcp2_pv_add_entry(ngtcp2_pv *pv, const uint8_t *data, + ngtcp2_tstamp expiry, uint8_t flags, ngtcp2_tstamp ts); + +/* + * ngtcp2_pv_full returns nonzero if |pv| is full of ngtcp2_pv_entry. + */ +int ngtcp2_pv_full(ngtcp2_pv *pv); + +/* + * ngtcp2_pv_validate validates that the received |data| matches the + * one of the existing entry. The flag of ngtcp2_pv_entry that + * matches |data| is assigned to |*pflags| if this function succeeds. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_PATH_VALIDATION_FAILED + * path validation has failed and must be abandoned + * NGTCP2_ERR_INVALID_STATE + * |pv| includes no entry + * NGTCP2_ERR_INVALID_ARGUMENT + * |pv| does not have an entry which has |data| and |path| + */ +int ngtcp2_pv_validate(ngtcp2_pv *pv, uint8_t *pflags, const uint8_t *data); + +/* + * ngtcp2_pv_handle_entry_expiry checks expiry of existing entries. + */ +void ngtcp2_pv_handle_entry_expiry(ngtcp2_pv *pv, ngtcp2_tstamp ts); + +/* + * ngtcp2_pv_should_send_probe returns nonzero if new entry can be + * added by ngtcp2_pv_add_entry. + */ +int ngtcp2_pv_should_send_probe(ngtcp2_pv *pv); + +/* + * ngtcp2_pv_validation_timed_out returns nonzero if the path + * validation fails because of timeout. + */ +int ngtcp2_pv_validation_timed_out(ngtcp2_pv *pv, ngtcp2_tstamp ts); + +/* + * ngtcp2_pv_next_expiry returns the earliest expiry. + */ +ngtcp2_tstamp ngtcp2_pv_next_expiry(ngtcp2_pv *pv); + +/* + * ngtcp2_pv_cancel_expired_timer cancels the expired timer. + */ +void ngtcp2_pv_cancel_expired_timer(ngtcp2_pv *pv, ngtcp2_tstamp ts); + +#endif /* !defined(NGTCP2_PV_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_qlog.c b/contrib/libs/ngtcp2/lib/ngtcp2_qlog.c new file mode 100644 index 0000000000..c0f920746a --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_qlog.c @@ -0,0 +1,1223 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_qlog.h" + +#include <assert.h> + +#include "ngtcp2_str.h" +#include "ngtcp2_vec.h" +#include "ngtcp2_conv.h" +#include "ngtcp2_net.h" +#include "ngtcp2_unreachable.h" +#include "ngtcp2_conn_stat.h" + +void ngtcp2_qlog_init(ngtcp2_qlog *qlog, ngtcp2_qlog_write write, + ngtcp2_tstamp ts, void *user_data) { + qlog->write = write; + qlog->ts = qlog->last_ts = ts; + qlog->user_data = user_data; +} + +#define write_verbatim(DEST, S) ngtcp2_cpymem((DEST), (S), sizeof(S) - 1) + +static uint8_t *write_string_impl(uint8_t *p, const uint8_t *data, + size_t datalen) { + *p++ = '"'; + if (datalen) { + p = ngtcp2_cpymem(p, data, datalen); + } + *p++ = '"'; + return p; +} + +#define write_string(DEST, S) \ + write_string_impl((DEST), (const uint8_t *)(S), sizeof(S) - 1) + +#define NGTCP2_LOWER_XDIGITS "0123456789abcdef" + +static uint8_t *write_hex(uint8_t *p, const uint8_t *data, size_t datalen) { + const uint8_t *b = data, *end = data + datalen; + *p++ = '"'; + for (; b != end; ++b) { + *p++ = (uint8_t)NGTCP2_LOWER_XDIGITS[*b >> 4]; + *p++ = (uint8_t)NGTCP2_LOWER_XDIGITS[*b & 0xf]; + } + *p++ = '"'; + return p; +} + +static uint8_t *write_cid(uint8_t *p, const ngtcp2_cid *cid) { + return write_hex(p, cid->data, cid->datalen); +} + +static uint8_t *write_number(uint8_t *p, uint64_t n) { + size_t nlen = 0; + uint64_t t; + uint8_t *res; + + if (n == 0) { + *p++ = '0'; + return p; + } + for (t = n; t; t /= 10, ++nlen) + ; + p += nlen; + res = p; + for (; n; n /= 10) { + *--p = (uint8_t)((n % 10) + '0'); + } + return res; +} + +static uint8_t *write_tstamp(uint8_t *p, ngtcp2_tstamp ts) { + return write_number(p, ts / NGTCP2_MILLISECONDS); +} + +static uint8_t *write_duration(uint8_t *p, ngtcp2_duration duration) { + return write_number(p, duration / NGTCP2_MILLISECONDS); +} + +static uint8_t *write_bool(uint8_t *p, int b) { + if (b) { + return ngtcp2_cpymem(p, "true", sizeof("true") - 1); + } + return ngtcp2_cpymem(p, "false", sizeof("false") - 1); +} + +static uint8_t *write_pair_impl(uint8_t *p, const uint8_t *name, size_t namelen, + const ngtcp2_vec *value) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_string_impl(p, value->base, value->len); +} + +#define write_pair(DEST, NAME, VALUE) \ + write_pair_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, (VALUE)) + +static uint8_t *write_pair_hex_impl(uint8_t *p, const uint8_t *name, + size_t namelen, const uint8_t *value, + size_t valuelen) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_hex(p, value, valuelen); +} + +#define write_pair_hex(DEST, NAME, VALUE, VALUELEN) \ + write_pair_hex_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, \ + (VALUE), (VALUELEN)) + +static uint8_t *write_pair_number_impl(uint8_t *p, const uint8_t *name, + size_t namelen, uint64_t value) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_number(p, value); +} + +#define write_pair_number(DEST, NAME, VALUE) \ + write_pair_number_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, \ + (VALUE)) + +static uint8_t *write_pair_duration_impl(uint8_t *p, const uint8_t *name, + size_t namelen, + ngtcp2_duration duration) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_duration(p, duration); +} + +#define write_pair_duration(DEST, NAME, VALUE) \ + write_pair_duration_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, \ + (VALUE)) + +static uint8_t *write_pair_tstamp_impl(uint8_t *p, const uint8_t *name, + size_t namelen, ngtcp2_tstamp ts) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_tstamp(p, ts); +} + +#define write_pair_tstamp(DEST, NAME, VALUE) \ + write_pair_tstamp_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, \ + (VALUE)) + +static uint8_t *write_pair_bool_impl(uint8_t *p, const uint8_t *name, + size_t namelen, int b) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_bool(p, b); +} + +#define write_pair_bool(DEST, NAME, VALUE) \ + write_pair_bool_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, \ + (VALUE)) + +static uint8_t *write_pair_cid_impl(uint8_t *p, const uint8_t *name, + size_t namelen, const ngtcp2_cid *cid) { + p = write_string_impl(p, name, namelen); + *p++ = ':'; + return write_cid(p, cid); +} + +#define write_pair_cid(DEST, NAME, VALUE) \ + write_pair_cid_impl((DEST), (const uint8_t *)(NAME), sizeof(NAME) - 1, \ + (VALUE)) + +#define ngtcp2_make_vec_lit(S) {(uint8_t *)(S), sizeof((S)) - 1} + +static uint8_t *write_common_fields(uint8_t *p, const ngtcp2_cid *odcid) { + p = write_verbatim( + p, "\"common_fields\":{\"protocol_type\":[\"QUIC\"],\"time_format\":" + "\"relative\",\"reference_time\":0,\"group_id\":"); + p = write_cid(p, odcid); + *p++ = '}'; + return p; +} + +static uint8_t *write_trace(uint8_t *p, int server, const ngtcp2_cid *odcid) { + p = write_verbatim( + p, "\"trace\":{\"vantage_point\":{\"name\":\"ngtcp2\",\"type\":"); + if (server) { + p = write_string(p, "server"); + } else { + p = write_string(p, "client"); + } + p = write_verbatim(p, "},"); + p = write_common_fields(p, odcid); + *p++ = '}'; + return p; +} + +void ngtcp2_qlog_start(ngtcp2_qlog *qlog, const ngtcp2_cid *odcid, int server) { + uint8_t buf[1024]; + uint8_t *p = buf; + + if (!qlog->write) { + return; + } + + p = write_verbatim( + p, "\x1e{\"qlog_format\":\"JSON-SEQ\",\"qlog_version\":\"0.3\","); + p = write_trace(p, server, odcid); + p = write_verbatim(p, "}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf, + (size_t)(p - buf)); +} + +void ngtcp2_qlog_end(ngtcp2_qlog *qlog) { + uint8_t buf[1] = {0}; + + if (!qlog->write) { + return; + } + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_FIN, &buf, 0); +} + +static ngtcp2_vec vec_pkt_type_initial = ngtcp2_make_vec_lit("initial"); +static ngtcp2_vec vec_pkt_type_handshake = ngtcp2_make_vec_lit("handshake"); +static ngtcp2_vec vec_pkt_type_0rtt = ngtcp2_make_vec_lit("0RTT"); +static ngtcp2_vec vec_pkt_type_1rtt = ngtcp2_make_vec_lit("1RTT"); +static ngtcp2_vec vec_pkt_type_retry = ngtcp2_make_vec_lit("retry"); +static ngtcp2_vec vec_pkt_type_version_negotiation = + ngtcp2_make_vec_lit("version_negotiation"); +static ngtcp2_vec vec_pkt_type_stateless_reset = + ngtcp2_make_vec_lit("stateless_reset"); +static ngtcp2_vec vec_pkt_type_unknown = ngtcp2_make_vec_lit("unknown"); + +static const ngtcp2_vec *qlog_pkt_type(const ngtcp2_pkt_hd *hd) { + if (hd->flags & NGTCP2_PKT_FLAG_LONG_FORM) { + switch (hd->type) { + case NGTCP2_PKT_INITIAL: + return &vec_pkt_type_initial; + case NGTCP2_PKT_HANDSHAKE: + return &vec_pkt_type_handshake; + case NGTCP2_PKT_0RTT: + return &vec_pkt_type_0rtt; + case NGTCP2_PKT_RETRY: + return &vec_pkt_type_retry; + default: + return &vec_pkt_type_unknown; + } + } + + switch (hd->type) { + case NGTCP2_PKT_VERSION_NEGOTIATION: + return &vec_pkt_type_version_negotiation; + case NGTCP2_PKT_STATELESS_RESET: + return &vec_pkt_type_stateless_reset; + case NGTCP2_PKT_1RTT: + return &vec_pkt_type_1rtt; + default: + return &vec_pkt_type_unknown; + } +} + +static uint8_t *write_pkt_hd(uint8_t *p, const ngtcp2_pkt_hd *hd) { + /* + * {"packet_type":"version_negotiation","packet_number":"0000000000000000000","token":{"data":""}} + */ +#define NGTCP2_QLOG_PKT_HD_OVERHEAD 95 + + *p++ = '{'; + p = write_pair(p, "packet_type", qlog_pkt_type(hd)); + *p++ = ','; + p = write_pair_number(p, "packet_number", (uint64_t)hd->pkt_num); + if (hd->type == NGTCP2_PKT_INITIAL && hd->tokenlen) { + p = write_verbatim(p, ",\"token\":{"); + p = write_pair_hex(p, "data", hd->token, hd->tokenlen); + *p++ = '}'; + } + /* TODO Write DCIL and DCID */ + /* TODO Write SCIL and SCID */ + *p++ = '}'; + return p; +} + +static uint8_t *write_padding_frame(uint8_t *p, const ngtcp2_padding *fr) { + (void)fr; + + /* {"frame_type":"padding"} */ +#define NGTCP2_QLOG_PADDING_FRAME_OVERHEAD 24 + + return write_verbatim(p, "{\"frame_type\":\"padding\"}"); +} + +static uint8_t *write_ping_frame(uint8_t *p, const ngtcp2_ping *fr) { + (void)fr; + + /* {"frame_type":"ping"} */ +#define NGTCP2_QLOG_PING_FRAME_OVERHEAD 21 + + return write_verbatim(p, "{\"frame_type\":\"ping\"}"); +} + +static uint8_t *write_ack_frame(uint8_t *p, const ngtcp2_ack *fr) { + int64_t largest_ack, min_ack; + size_t i; + const ngtcp2_ack_range *range; + + /* + * {"frame_type":"ack","ack_delay":0000000000000000000,"acked_ranges":[]} + * + * each range: + * [0000000000000000000,0000000000000000000], + * + * ecn: + * ,"ect1":0000000000000000000,"ect0":0000000000000000000,"ce":0000000000000000000 + */ +#define NGTCP2_QLOG_ACK_FRAME_BASE_OVERHEAD 70 +#define NGTCP2_QLOG_ACK_FRAME_RANGE_OVERHEAD 42 +#define NGTCP2_QLOG_ACK_FRAME_ECN_OVERHEAD 79 + + p = write_verbatim(p, "{\"frame_type\":\"ack\","); + p = write_pair_duration(p, "ack_delay", fr->ack_delay_unscaled); + p = write_verbatim(p, ",\"acked_ranges\":["); + + largest_ack = fr->largest_ack; + min_ack = fr->largest_ack - (int64_t)fr->first_ack_range; + + *p++ = '['; + p = write_number(p, (uint64_t)min_ack); + if (largest_ack != min_ack) { + *p++ = ','; + p = write_number(p, (uint64_t)largest_ack); + } + *p++ = ']'; + + for (i = 0; i < fr->rangecnt; ++i) { + range = &fr->ranges[i]; + largest_ack = min_ack - (int64_t)range->gap - 2; + min_ack = largest_ack - (int64_t)range->len; + *p++ = ','; + *p++ = '['; + p = write_number(p, (uint64_t)min_ack); + if (largest_ack != min_ack) { + *p++ = ','; + p = write_number(p, (uint64_t)largest_ack); + } + *p++ = ']'; + } + + *p++ = ']'; + + if (fr->type == NGTCP2_FRAME_ACK_ECN) { + *p++ = ','; + p = write_pair_number(p, "ect1", fr->ecn.ect1); + *p++ = ','; + p = write_pair_number(p, "ect0", fr->ecn.ect0); + *p++ = ','; + p = write_pair_number(p, "ce", fr->ecn.ce); + } + + *p++ = '}'; + + return p; +} + +static uint8_t *write_reset_stream_frame(uint8_t *p, + const ngtcp2_reset_stream *fr) { + /* + * {"frame_type":"reset_stream","stream_id":0000000000000000000,"error_code":0000000000000000000,"final_size":0000000000000000000} + */ +#define NGTCP2_QLOG_RESET_STREAM_FRAME_OVERHEAD 127 + + p = write_verbatim(p, "{\"frame_type\":\"reset_stream\","); + p = write_pair_number(p, "stream_id", (uint64_t)fr->stream_id); + *p++ = ','; + p = write_pair_number(p, "error_code", fr->app_error_code); + *p++ = ','; + p = write_pair_number(p, "final_size", fr->final_size); + *p++ = '}'; + + return p; +} + +static uint8_t *write_stop_sending_frame(uint8_t *p, + const ngtcp2_stop_sending *fr) { + /* + * {"frame_type":"stop_sending","stream_id":0000000000000000000,"error_code":0000000000000000000} + */ +#define NGTCP2_QLOG_STOP_SENDING_FRAME_OVERHEAD 94 + + p = write_verbatim(p, "{\"frame_type\":\"stop_sending\","); + p = write_pair_number(p, "stream_id", (uint64_t)fr->stream_id); + *p++ = ','; + p = write_pair_number(p, "error_code", fr->app_error_code); + *p++ = '}'; + + return p; +} + +static uint8_t *write_crypto_frame(uint8_t *p, const ngtcp2_stream *fr) { + /* + * {"frame_type":"crypto","offset":0000000000000000000,"length":0000000000000000000} + */ +#define NGTCP2_QLOG_CRYPTO_FRAME_OVERHEAD 81 + + p = write_verbatim(p, "{\"frame_type\":\"crypto\","); + p = write_pair_number(p, "offset", fr->offset); + *p++ = ','; + p = write_pair_number(p, "length", ngtcp2_vec_len(fr->data, fr->datacnt)); + *p++ = '}'; + + return p; +} + +static uint8_t *write_new_token_frame(uint8_t *p, const ngtcp2_new_token *fr) { + /* + * {"frame_type":"new_token","length":0000000000000000000,"token":{"data":""}} + */ +#define NGTCP2_QLOG_NEW_TOKEN_FRAME_OVERHEAD 75 + + p = write_verbatim(p, "{\"frame_type\":\"new_token\","); + p = write_pair_number(p, "length", fr->tokenlen); + p = write_verbatim(p, ",\"token\":{"); + p = write_pair_hex(p, "data", fr->token, fr->tokenlen); + *p++ = '}'; + *p++ = '}'; + + return p; +} + +static uint8_t *write_stream_frame(uint8_t *p, const ngtcp2_stream *fr) { + /* + * {"frame_type":"stream","stream_id":0000000000000000000,"offset":0000000000000000000,"length":0000000000000000000,"fin":true} + */ +#define NGTCP2_QLOG_STREAM_FRAME_OVERHEAD 124 + + p = write_verbatim(p, "{\"frame_type\":\"stream\","); + p = write_pair_number(p, "stream_id", (uint64_t)fr->stream_id); + *p++ = ','; + p = write_pair_number(p, "offset", fr->offset); + *p++ = ','; + p = write_pair_number(p, "length", ngtcp2_vec_len(fr->data, fr->datacnt)); + if (fr->fin) { + *p++ = ','; + p = write_pair_bool(p, "fin", 1); + } + *p++ = '}'; + + return p; +} + +static uint8_t *write_max_data_frame(uint8_t *p, const ngtcp2_max_data *fr) { + /* + * {"frame_type":"max_data","maximum":0000000000000000000} + */ +#define NGTCP2_QLOG_MAX_DATA_FRAME_OVERHEAD 55 + + p = write_verbatim(p, "{\"frame_type\":\"max_data\","); + p = write_pair_number(p, "maximum", fr->max_data); + *p++ = '}'; + + return p; +} + +static uint8_t *write_max_stream_data_frame(uint8_t *p, + const ngtcp2_max_stream_data *fr) { + /* + * {"frame_type":"max_stream_data","stream_id":0000000000000000000,"maximum":0000000000000000000} + */ +#define NGTCP2_QLOG_MAX_STREAM_DATA_FRAME_OVERHEAD 94 + + p = write_verbatim(p, "{\"frame_type\":\"max_stream_data\","); + p = write_pair_number(p, "stream_id", (uint64_t)fr->stream_id); + *p++ = ','; + p = write_pair_number(p, "maximum", fr->max_stream_data); + *p++ = '}'; + + return p; +} + +static uint8_t *write_max_streams_frame(uint8_t *p, + const ngtcp2_max_streams *fr) { + /* + * {"frame_type":"max_streams","stream_type":"unidirectional","maximum":0000000000000000000} + */ +#define NGTCP2_QLOG_MAX_STREAMS_FRAME_OVERHEAD 89 + + p = write_verbatim(p, "{\"frame_type\":\"max_streams\",\"stream_type\":"); + if (fr->type == NGTCP2_FRAME_MAX_STREAMS_BIDI) { + p = write_string(p, "bidirectional"); + } else { + p = write_string(p, "unidirectional"); + } + *p++ = ','; + p = write_pair_number(p, "maximum", fr->max_streams); + *p++ = '}'; + + return p; +} + +static uint8_t *write_data_blocked_frame(uint8_t *p, + const ngtcp2_data_blocked *fr) { + /* + * {"frame_type":"data_blocked","limit":0000000000000000000} + */ +#define NGTCP2_QLOG_DATA_BLOCKED_FRAME_OVERHEAD 57 + + p = write_verbatim(p, "{\"frame_type\":\"data_blocked\","); + p = write_pair_number(p, "limit", fr->offset); + *p++ = '}'; + + return p; +} + +static uint8_t * +write_stream_data_blocked_frame(uint8_t *p, + const ngtcp2_stream_data_blocked *fr) { + /* + * {"frame_type":"stream_data_blocked","stream_id":0000000000000000000,"limit":0000000000000000000} + */ +#define NGTCP2_QLOG_STREAM_DATA_BLOCKED_FRAME_OVERHEAD 96 + + p = write_verbatim(p, "{\"frame_type\":\"stream_data_blocked\","); + p = write_pair_number(p, "stream_id", (uint64_t)fr->stream_id); + *p++ = ','; + p = write_pair_number(p, "limit", fr->offset); + *p++ = '}'; + + return p; +} + +static uint8_t *write_streams_blocked_frame(uint8_t *p, + const ngtcp2_streams_blocked *fr) { + /* + * {"frame_type":"streams_blocked","stream_type":"unidirectional","limit":0000000000000000000} + */ +#define NGTCP2_QLOG_STREAMS_BLOCKED_FRAME_OVERHEAD 91 + + p = write_verbatim(p, "{\"frame_type\":\"streams_blocked\",\"stream_type\":"); + if (fr->type == NGTCP2_FRAME_STREAMS_BLOCKED_BIDI) { + p = write_string(p, "bidirectional"); + } else { + p = write_string(p, "unidirectional"); + } + *p++ = ','; + p = write_pair_number(p, "limit", fr->max_streams); + *p++ = '}'; + + return p; +} + +static uint8_t * +write_new_connection_id_frame(uint8_t *p, const ngtcp2_new_connection_id *fr) { + /* + * {"frame_type":"new_connection_id","sequence_number":0000000000000000000,"retire_prior_to":0000000000000000000,"connection_id_length":0000000000000000000,"connection_id":"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx","stateless_reset_token":{"data":"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"}} + */ +#define NGTCP2_QLOG_NEW_CONNECTION_ID_FRAME_OVERHEAD 280 + + p = write_verbatim(p, "{\"frame_type\":\"new_connection_id\","); + p = write_pair_number(p, "sequence_number", fr->seq); + *p++ = ','; + p = write_pair_number(p, "retire_prior_to", fr->retire_prior_to); + *p++ = ','; + p = write_pair_number(p, "connection_id_length", fr->cid.datalen); + *p++ = ','; + p = write_pair_cid(p, "connection_id", &fr->cid); + p = write_verbatim(p, ",\"stateless_reset_token\":{"); + p = write_pair_hex(p, "data", fr->stateless_reset_token, + sizeof(fr->stateless_reset_token)); + *p++ = '}'; + *p++ = '}'; + + return p; +} + +static uint8_t * +write_retire_connection_id_frame(uint8_t *p, + const ngtcp2_retire_connection_id *fr) { + /* + * {"frame_type":"retire_connection_id","sequence_number":0000000000000000000} + */ +#define NGTCP2_QLOG_RETIRE_CONNECTION_ID_FRAME_OVERHEAD 75 + + p = write_verbatim(p, "{\"frame_type\":\"retire_connection_id\","); + p = write_pair_number(p, "sequence_number", fr->seq); + *p++ = '}'; + + return p; +} + +static uint8_t *write_path_challenge_frame(uint8_t *p, + const ngtcp2_path_challenge *fr) { + /* + * {"frame_type":"path_challenge","data":"xxxxxxxxxxxxxxxx"} + */ +#define NGTCP2_QLOG_PATH_CHALLENGE_FRAME_OVERHEAD 57 + + p = write_verbatim(p, "{\"frame_type\":\"path_challenge\","); + p = write_pair_hex(p, "data", fr->data, sizeof(fr->data)); + *p++ = '}'; + + return p; +} + +static uint8_t *write_path_response_frame(uint8_t *p, + const ngtcp2_path_response *fr) { + /* + * {"frame_type":"path_response","data":"xxxxxxxxxxxxxxxx"} + */ +#define NGTCP2_QLOG_PATH_RESPONSE_FRAME_OVERHEAD 56 + + p = write_verbatim(p, "{\"frame_type\":\"path_response\","); + p = write_pair_hex(p, "data", fr->data, sizeof(fr->data)); + *p++ = '}'; + + return p; +} + +static uint8_t * +write_connection_close_frame(uint8_t *p, const ngtcp2_connection_close *fr) { + /* + * {"frame_type":"connection_close","error_space":"application","error_code":0000000000000000000,"raw_error_code":0000000000000000000} + */ +#define NGTCP2_QLOG_CONNECTION_CLOSE_FRAME_OVERHEAD 131 + + p = + write_verbatim(p, "{\"frame_type\":\"connection_close\",\"error_space\":"); + if (fr->type == NGTCP2_FRAME_CONNECTION_CLOSE) { + p = write_string(p, "transport"); + } else { + p = write_string(p, "application"); + } + *p++ = ','; + p = write_pair_number(p, "error_code", fr->error_code); + *p++ = ','; + p = write_pair_number(p, "raw_error_code", fr->error_code); + /* TODO Write reason by escaping non-printables */ + /* TODO Write trigger_frame_type */ + *p++ = '}'; + + return p; +} + +static uint8_t *write_handshake_done_frame(uint8_t *p, + const ngtcp2_handshake_done *fr) { + (void)fr; + + /* + * {"frame_type":"handshake_done"} + */ +#define NGTCP2_QLOG_HANDSHAKE_DONE_FRAME_OVERHEAD 31 + + return write_verbatim(p, "{\"frame_type\":\"handshake_done\"}"); +} + +static uint8_t *write_datagram_frame(uint8_t *p, const ngtcp2_datagram *fr) { + /* + * {"frame_type":"datagram","length":0000000000000000000} + */ +#define NGTCP2_QLOG_DATAGRAM_FRAME_OVERHEAD 54 + + p = write_verbatim(p, "{\"frame_type\":\"datagram\","); + p = write_pair_number(p, "length", ngtcp2_vec_len(fr->data, fr->datacnt)); + *p++ = '}'; + + return p; +} + +static uint8_t *qlog_write_time(ngtcp2_qlog *qlog, uint8_t *p) { + return write_pair_tstamp(p, "time", qlog->last_ts - qlog->ts); +} + +static void qlog_pkt_write_start(ngtcp2_qlog *qlog, int sent) { + uint8_t *p; + + if (!qlog->write) { + return; + } + + ngtcp2_buf_reset(&qlog->buf); + p = qlog->buf.last; + + *p++ = '\x1e'; + *p++ = '{'; + p = qlog_write_time(qlog, p); + p = write_verbatim(p, ",\"name\":"); + if (sent) { + p = write_string(p, "transport:packet_sent"); + } else { + p = write_string(p, "transport:packet_received"); + } + p = write_verbatim(p, ",\"data\":{\"frames\":["); + qlog->buf.last = p; +} + +static void qlog_pkt_write_end(ngtcp2_qlog *qlog, const ngtcp2_pkt_hd *hd, + size_t pktlen) { + uint8_t *p = qlog->buf.last; + + if (!qlog->write) { + return; + } + + /* + * ],"header":,"raw":{"length":0000000000000000000}}} + * + * plus, terminating LF + */ +#define NGTCP2_QLOG_PKT_WRITE_END_OVERHEAD \ + (1 + 50 + NGTCP2_QLOG_PKT_HD_OVERHEAD) + + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_PKT_WRITE_END_OVERHEAD + hd->tokenlen * 2) { + return; + } + + assert(ngtcp2_buf_len(&qlog->buf)); + + /* Eat last ',' */ + if (*(p - 1) == ',') { + --p; + } + + p = write_verbatim(p, "],\"header\":"); + p = write_pkt_hd(p, hd); + p = write_verbatim(p, ",\"raw\":{\"length\":"); + p = write_number(p, pktlen); + p = write_verbatim(p, "}}}\n"); + + qlog->buf.last = p; + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, qlog->buf.pos, + ngtcp2_buf_len(&qlog->buf)); +} + +void ngtcp2_qlog_write_frame(ngtcp2_qlog *qlog, const ngtcp2_frame *fr) { + uint8_t *p = qlog->buf.last; + + if (!qlog->write) { + return; + } + + switch (fr->type) { + case NGTCP2_FRAME_PADDING: + if (ngtcp2_buf_left(&qlog->buf) < NGTCP2_QLOG_PADDING_FRAME_OVERHEAD + 1) { + return; + } + p = write_padding_frame(p, &fr->padding); + break; + case NGTCP2_FRAME_PING: + if (ngtcp2_buf_left(&qlog->buf) < NGTCP2_QLOG_PING_FRAME_OVERHEAD + 1) { + return; + } + p = write_ping_frame(p, &fr->ping); + break; + case NGTCP2_FRAME_ACK: + case NGTCP2_FRAME_ACK_ECN: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_ACK_FRAME_BASE_OVERHEAD + + (size_t)(fr->type == NGTCP2_FRAME_ACK_ECN + ? NGTCP2_QLOG_ACK_FRAME_ECN_OVERHEAD + : 0) + + NGTCP2_QLOG_ACK_FRAME_RANGE_OVERHEAD * (1 + fr->ack.rangecnt) + 1) { + return; + } + p = write_ack_frame(p, &fr->ack); + break; + case NGTCP2_FRAME_RESET_STREAM: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_RESET_STREAM_FRAME_OVERHEAD + 1) { + return; + } + p = write_reset_stream_frame(p, &fr->reset_stream); + break; + case NGTCP2_FRAME_STOP_SENDING: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_STOP_SENDING_FRAME_OVERHEAD + 1) { + return; + } + p = write_stop_sending_frame(p, &fr->stop_sending); + break; + case NGTCP2_FRAME_CRYPTO: + if (ngtcp2_buf_left(&qlog->buf) < NGTCP2_QLOG_CRYPTO_FRAME_OVERHEAD + 1) { + return; + } + p = write_crypto_frame(p, &fr->stream); + break; + case NGTCP2_FRAME_NEW_TOKEN: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_NEW_TOKEN_FRAME_OVERHEAD + fr->new_token.tokenlen * 2 + 1) { + return; + } + p = write_new_token_frame(p, &fr->new_token); + break; + case NGTCP2_FRAME_STREAM: + if (ngtcp2_buf_left(&qlog->buf) < NGTCP2_QLOG_STREAM_FRAME_OVERHEAD + 1) { + return; + } + p = write_stream_frame(p, &fr->stream); + break; + case NGTCP2_FRAME_MAX_DATA: + if (ngtcp2_buf_left(&qlog->buf) < NGTCP2_QLOG_MAX_DATA_FRAME_OVERHEAD + 1) { + return; + } + p = write_max_data_frame(p, &fr->max_data); + break; + case NGTCP2_FRAME_MAX_STREAM_DATA: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_MAX_STREAM_DATA_FRAME_OVERHEAD + 1) { + return; + } + p = write_max_stream_data_frame(p, &fr->max_stream_data); + break; + case NGTCP2_FRAME_MAX_STREAMS_BIDI: + case NGTCP2_FRAME_MAX_STREAMS_UNI: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_MAX_STREAMS_FRAME_OVERHEAD + 1) { + return; + } + p = write_max_streams_frame(p, &fr->max_streams); + break; + case NGTCP2_FRAME_DATA_BLOCKED: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_DATA_BLOCKED_FRAME_OVERHEAD + 1) { + return; + } + p = write_data_blocked_frame(p, &fr->data_blocked); + break; + case NGTCP2_FRAME_STREAM_DATA_BLOCKED: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_STREAM_DATA_BLOCKED_FRAME_OVERHEAD + 1) { + return; + } + p = write_stream_data_blocked_frame(p, &fr->stream_data_blocked); + break; + case NGTCP2_FRAME_STREAMS_BLOCKED_BIDI: + case NGTCP2_FRAME_STREAMS_BLOCKED_UNI: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_STREAMS_BLOCKED_FRAME_OVERHEAD + 1) { + return; + } + p = write_streams_blocked_frame(p, &fr->streams_blocked); + break; + case NGTCP2_FRAME_NEW_CONNECTION_ID: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_NEW_CONNECTION_ID_FRAME_OVERHEAD + 1) { + return; + } + p = write_new_connection_id_frame(p, &fr->new_connection_id); + break; + case NGTCP2_FRAME_RETIRE_CONNECTION_ID: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_RETIRE_CONNECTION_ID_FRAME_OVERHEAD + 1) { + return; + } + p = write_retire_connection_id_frame(p, &fr->retire_connection_id); + break; + case NGTCP2_FRAME_PATH_CHALLENGE: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_PATH_CHALLENGE_FRAME_OVERHEAD + 1) { + return; + } + p = write_path_challenge_frame(p, &fr->path_challenge); + break; + case NGTCP2_FRAME_PATH_RESPONSE: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_PATH_RESPONSE_FRAME_OVERHEAD + 1) { + return; + } + p = write_path_response_frame(p, &fr->path_response); + break; + case NGTCP2_FRAME_CONNECTION_CLOSE: + case NGTCP2_FRAME_CONNECTION_CLOSE_APP: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_CONNECTION_CLOSE_FRAME_OVERHEAD + 1) { + return; + } + p = write_connection_close_frame(p, &fr->connection_close); + break; + case NGTCP2_FRAME_HANDSHAKE_DONE: + if (ngtcp2_buf_left(&qlog->buf) < + NGTCP2_QLOG_HANDSHAKE_DONE_FRAME_OVERHEAD + 1) { + return; + } + p = write_handshake_done_frame(p, &fr->handshake_done); + break; + case NGTCP2_FRAME_DATAGRAM: + case NGTCP2_FRAME_DATAGRAM_LEN: + if (ngtcp2_buf_left(&qlog->buf) < NGTCP2_QLOG_DATAGRAM_FRAME_OVERHEAD + 1) { + return; + } + p = write_datagram_frame(p, &fr->datagram); + break; + default: + ngtcp2_unreachable(); + } + + *p++ = ','; + + qlog->buf.last = p; +} + +void ngtcp2_qlog_pkt_received_start(ngtcp2_qlog *qlog) { + qlog_pkt_write_start(qlog, /* sent = */ 0); +} + +void ngtcp2_qlog_pkt_received_end(ngtcp2_qlog *qlog, const ngtcp2_pkt_hd *hd, + size_t pktlen) { + qlog_pkt_write_end(qlog, hd, pktlen); +} + +void ngtcp2_qlog_pkt_sent_start(ngtcp2_qlog *qlog) { + qlog_pkt_write_start(qlog, /* sent = */ 1); +} + +void ngtcp2_qlog_pkt_sent_end(ngtcp2_qlog *qlog, const ngtcp2_pkt_hd *hd, + size_t pktlen) { + qlog_pkt_write_end(qlog, hd, pktlen); +} + +void ngtcp2_qlog_parameters_set_transport_params( + ngtcp2_qlog *qlog, const ngtcp2_transport_params *params, int server, + ngtcp2_qlog_side side) { + uint8_t buf[1024]; + uint8_t *p = buf; + const ngtcp2_preferred_addr *paddr; + const ngtcp2_sockaddr_in *sa_in; + const ngtcp2_sockaddr_in6 *sa_in6; + + if (!qlog->write) { + return; + } + + *p++ = '\x1e'; + *p++ = '{'; + p = qlog_write_time(qlog, p); + p = write_verbatim( + p, ",\"name\":\"transport:parameters_set\",\"data\":{\"owner\":"); + + if (side == NGTCP2_QLOG_SIDE_LOCAL) { + p = write_string(p, "local"); + } else { + p = write_string(p, "remote"); + } + + *p++ = ','; + p = write_pair_cid(p, "initial_source_connection_id", ¶ms->initial_scid); + *p++ = ','; + if (side == (server ? NGTCP2_QLOG_SIDE_LOCAL : NGTCP2_QLOG_SIDE_REMOTE)) { + p = write_pair_cid(p, "original_destination_connection_id", + ¶ms->original_dcid); + *p++ = ','; + } + if (params->retry_scid_present) { + p = write_pair_cid(p, "retry_source_connection_id", ¶ms->retry_scid); + *p++ = ','; + } + if (params->stateless_reset_token_present) { + p = write_verbatim(p, "\"stateless_reset_token\":{"); + p = write_pair_hex(p, "data", params->stateless_reset_token, + sizeof(params->stateless_reset_token)); + *p++ = '}'; + *p++ = ','; + } + p = write_pair_bool(p, "disable_active_migration", + params->disable_active_migration); + *p++ = ','; + p = write_pair_duration(p, "max_idle_timeout", params->max_idle_timeout); + *p++ = ','; + p = + write_pair_number(p, "max_udp_payload_size", params->max_udp_payload_size); + *p++ = ','; + p = write_pair_number(p, "ack_delay_exponent", params->ack_delay_exponent); + *p++ = ','; + p = write_pair_duration(p, "max_ack_delay", params->max_ack_delay); + *p++ = ','; + p = write_pair_number(p, "active_connection_id_limit", + params->active_connection_id_limit); + *p++ = ','; + p = write_pair_number(p, "initial_max_data", params->initial_max_data); + *p++ = ','; + p = write_pair_number(p, "initial_max_stream_data_bidi_local", + params->initial_max_stream_data_bidi_local); + *p++ = ','; + p = write_pair_number(p, "initial_max_stream_data_bidi_remote", + params->initial_max_stream_data_bidi_remote); + *p++ = ','; + p = write_pair_number(p, "initial_max_stream_data_uni", + params->initial_max_stream_data_uni); + *p++ = ','; + p = write_pair_number(p, "initial_max_streams_bidi", + params->initial_max_streams_bidi); + *p++ = ','; + p = write_pair_number(p, "initial_max_streams_uni", + params->initial_max_streams_uni); + if (params->preferred_addr_present) { + *p++ = ','; + paddr = ¶ms->preferred_addr; + p = write_string(p, "preferred_address"); + *p++ = ':'; + *p++ = '{'; + + if (paddr->ipv4_present) { + sa_in = &paddr->ipv4; + + p = write_pair_hex(p, "ip_v4", (const uint8_t *)&sa_in->sin_addr, + sizeof(sa_in->sin_addr)); + *p++ = ','; + p = write_pair_number(p, "port_v4", ngtcp2_ntohs(sa_in->sin_port)); + *p++ = ','; + } + + if (paddr->ipv6_present) { + sa_in6 = &paddr->ipv6; + + p = write_pair_hex(p, "ip_v6", (const uint8_t *)&sa_in6->sin6_addr, + sizeof(sa_in6->sin6_addr)); + *p++ = ','; + p = write_pair_number(p, "port_v6", ngtcp2_ntohs(sa_in6->sin6_port)); + *p++ = ','; + } + + p = write_pair_cid(p, "connection_id", &paddr->cid); + p = write_verbatim(p, ",\"stateless_reset_token\":{"); + p = write_pair_hex(p, "data", paddr->stateless_reset_token, + sizeof(paddr->stateless_reset_token)); + *p++ = '}'; + *p++ = '}'; + } + *p++ = ','; + p = write_pair_number(p, "max_datagram_frame_size", + params->max_datagram_frame_size); + *p++ = ','; + p = write_pair_bool(p, "grease_quic_bit", params->grease_quic_bit); + p = write_verbatim(p, "}}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf, + (size_t)(p - buf)); +} + +void ngtcp2_qlog_metrics_updated(ngtcp2_qlog *qlog, + const ngtcp2_conn_stat *cstat) { + uint8_t buf[1024]; + uint8_t *p = buf; + + if (!qlog->write) { + return; + } + + *p++ = '\x1e'; + *p++ = '{'; + p = qlog_write_time(qlog, p); + p = write_verbatim(p, ",\"name\":\"recovery:metrics_updated\",\"data\":{"); + + if (cstat->min_rtt != UINT64_MAX) { + p = write_pair_duration(p, "min_rtt", cstat->min_rtt); + *p++ = ','; + } + p = write_pair_duration(p, "smoothed_rtt", cstat->smoothed_rtt); + *p++ = ','; + p = write_pair_duration(p, "latest_rtt", cstat->latest_rtt); + *p++ = ','; + p = write_pair_duration(p, "rtt_variance", cstat->rttvar); + *p++ = ','; + p = write_pair_number(p, "pto_count", cstat->pto_count); + *p++ = ','; + p = write_pair_number(p, "congestion_window", cstat->cwnd); + *p++ = ','; + p = write_pair_number(p, "bytes_in_flight", cstat->bytes_in_flight); + if (cstat->ssthresh != UINT64_MAX) { + *p++ = ','; + p = write_pair_number(p, "ssthresh", cstat->ssthresh); + } + + p = write_verbatim(p, "}}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf, + (size_t)(p - buf)); +} + +void ngtcp2_qlog_pkt_lost(ngtcp2_qlog *qlog, ngtcp2_rtb_entry *ent) { + uint8_t buf[256]; + uint8_t *p = buf; + ngtcp2_pkt_hd hd = {0}; + + if (!qlog->write) { + return; + } + + *p++ = '\x1e'; + *p++ = '{'; + p = qlog_write_time(qlog, p); + p = write_verbatim( + p, ",\"name\":\"recovery:packet_lost\",\"data\":{\"header\":"); + + hd.type = ent->hd.type; + hd.flags = ent->hd.flags; + hd.pkt_num = ent->hd.pkt_num; + + p = write_pkt_hd(p, &hd); + p = write_verbatim(p, "}}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf, + (size_t)(p - buf)); +} + +void ngtcp2_qlog_retry_pkt_received(ngtcp2_qlog *qlog, const ngtcp2_pkt_hd *hd, + const ngtcp2_pkt_retry *retry) { + uint8_t rawbuf[1024]; + ngtcp2_buf buf; + + if (!qlog->write) { + return; + } + + ngtcp2_buf_init(&buf, rawbuf, sizeof(rawbuf)); + + *buf.last++ = '\x1e'; + *buf.last++ = '{'; + buf.last = qlog_write_time(qlog, buf.last); + buf.last = write_verbatim( + buf.last, ",\"name\":\"transport:packet_received\",\"data\":{\"header\":"); + + if (ngtcp2_buf_left(&buf) < NGTCP2_QLOG_PKT_HD_OVERHEAD + hd->tokenlen * 2 + + sizeof(",\"retry_token\":{\"data\":\"\"}}}\n") - + 1 + retry->tokenlen * 2) { + return; + } + + buf.last = write_pkt_hd(buf.last, hd); + buf.last = write_verbatim(buf.last, ",\"retry_token\":{"); + buf.last = write_pair_hex(buf.last, "data", retry->token, retry->tokenlen); + buf.last = write_verbatim(buf.last, "}}}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf.pos, + ngtcp2_buf_len(&buf)); +} + +void ngtcp2_qlog_stateless_reset_pkt_received( + ngtcp2_qlog *qlog, const ngtcp2_pkt_stateless_reset *sr) { + uint8_t buf[256]; + uint8_t *p = buf; + ngtcp2_pkt_hd hd = {0}; + + if (!qlog->write) { + return; + } + + hd.type = NGTCP2_PKT_STATELESS_RESET; + + *p++ = '\x1e'; + *p++ = '{'; + p = qlog_write_time(qlog, p); + p = write_verbatim( + p, ",\"name\":\"transport:packet_received\",\"data\":{\"header\":"); + p = write_pkt_hd(p, &hd); + *p++ = ','; + p = write_pair_hex(p, "stateless_reset_token", sr->stateless_reset_token, + NGTCP2_STATELESS_RESET_TOKENLEN); + p = write_verbatim(p, "}}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf, + (size_t)(p - buf)); +} + +void ngtcp2_qlog_version_negotiation_pkt_received(ngtcp2_qlog *qlog, + const ngtcp2_pkt_hd *hd, + const uint32_t *sv, + size_t nsv) { + uint8_t rawbuf[512]; + ngtcp2_buf buf; + size_t i; + uint32_t v; + + if (!qlog->write) { + return; + } + + ngtcp2_buf_init(&buf, rawbuf, sizeof(rawbuf)); + + *buf.last++ = '\x1e'; + *buf.last++ = '{'; + buf.last = qlog_write_time(qlog, buf.last); + buf.last = write_verbatim( + buf.last, ",\"name\":\"transport:packet_received\",\"data\":{\"header\":"); + buf.last = write_pkt_hd(buf.last, hd); + buf.last = write_verbatim(buf.last, ",\"supported_versions\":["); + + if (nsv) { + if (ngtcp2_buf_left(&buf) < + (sizeof("\"xxxxxxxx\",") - 1) * nsv - 1 + sizeof("]}}\n") - 1) { + return; + } + + v = ngtcp2_htonl(sv[0]); + buf.last = write_hex(buf.last, (const uint8_t *)&v, sizeof(v)); + + for (i = 1; i < nsv; ++i) { + *buf.last++ = ','; + v = ngtcp2_htonl(sv[i]); + buf.last = write_hex(buf.last, (const uint8_t *)&v, sizeof(v)); + } + } + + buf.last = write_verbatim(buf.last, "]}}\n"); + + qlog->write(qlog->user_data, NGTCP2_QLOG_WRITE_FLAG_NONE, buf.pos, + ngtcp2_buf_len(&buf)); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_qlog.h b/contrib/libs/ngtcp2/lib/ngtcp2_qlog.h new file mode 100644 index 0000000000..d2a5f1038c --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_qlog.h @@ -0,0 +1,161 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_QLOG_H +#define NGTCP2_QLOG_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_pkt.h" +#include "ngtcp2_cc.h" +#include "ngtcp2_buf.h" +#include "ngtcp2_rtb.h" + +/* NGTCP2_QLOG_BUFLEN is the length of heap allocated buffer for + qlog. */ +#define NGTCP2_QLOG_BUFLEN 4096 + +typedef enum ngtcp2_qlog_side { + NGTCP2_QLOG_SIDE_LOCAL, + NGTCP2_QLOG_SIDE_REMOTE, +} ngtcp2_qlog_side; + +typedef struct ngtcp2_qlog { + /* write is a callback function to write qlog. */ + ngtcp2_qlog_write write; + /* ts is the initial timestamp */ + ngtcp2_tstamp ts; + /* last_ts is the timestamp observed last time. */ + ngtcp2_tstamp last_ts; + /* buf is a heap allocated buffer to write exclusively + packet_received and packet_sent. */ + ngtcp2_buf buf; + /* user_data is an opaque pointer which is passed to write + callback. */ + void *user_data; +} ngtcp2_qlog; + +/* + * ngtcp2_qlog_init initializes |qlog|. + */ +void ngtcp2_qlog_init(ngtcp2_qlog *qlog, ngtcp2_qlog_write write, + ngtcp2_tstamp ts, void *user_data); + +/* + * ngtcp2_qlog_start writes qlog preamble. + */ +void ngtcp2_qlog_start(ngtcp2_qlog *qlog, const ngtcp2_cid *odcid, int server); + +/* + * ngtcp2_qlog_end writes closing part of qlog. + */ +void ngtcp2_qlog_end(ngtcp2_qlog *qlog); + +/* + * ngtcp2_qlog_write_frame writes |fr| to qlog->buf. + * ngtcp2_qlog_pkt_received_start or ngtcp2_qlog_pkt_sent_start must + * be called before calling this function. + */ +void ngtcp2_qlog_write_frame(ngtcp2_qlog *qlog, const ngtcp2_frame *fr); + +/* + * ngtcp2_qlog_pkt_received_start starts to write packet_received + * event. It initializes qlog->buf. It writes qlog to qlog->buf. + * ngtcp2_qlog_pkt_received_end will flush the content of qlog->buf to + * write callback. + */ +void ngtcp2_qlog_pkt_received_start(ngtcp2_qlog *qlog); + +/* + * ngtcp2_qlog_pkt_received_end ends packet_received event and sends + * the content of qlog->buf to qlog->write callback. + */ +void ngtcp2_qlog_pkt_received_end(ngtcp2_qlog *qlog, const ngtcp2_pkt_hd *hd, + size_t pktlen); + +/* + * ngtcp2_qlog_pkt_sent_start starts to write packet_sent event. It + * initializes qlog->buf. It writes qlog to qlog->buf. + * ngtcp2_qlog_pkt_sent_end will flush the content of qlog->buf to + * write callback. + */ +void ngtcp2_qlog_pkt_sent_start(ngtcp2_qlog *qlog); + +/* + * ngtcp2_qlog_pkt_sent_end ends packet_sent event and sends the + * content of qlog->buf to qlog->write callback. + */ +void ngtcp2_qlog_pkt_sent_end(ngtcp2_qlog *qlog, const ngtcp2_pkt_hd *hd, + size_t pktlen); + +/* + * ngtcp2_qlog_parameters_set_transport_params writes |params| to qlog + * as parameters_set event. |server| is nonzero if the local endpoint + * is server. If |local| is nonzero, it is "owner" field becomes + * "local", otherwise "remote". + */ +void ngtcp2_qlog_parameters_set_transport_params( + ngtcp2_qlog *qlog, const ngtcp2_transport_params *params, int server, + ngtcp2_qlog_side side); + +/* + * ngtcp2_qlog_metrics_updated writes metrics_updated event of + * recovery category. + */ +void ngtcp2_qlog_metrics_updated(ngtcp2_qlog *qlog, + const ngtcp2_conn_stat *cstat); + +/* + * ngtcp2_qlog_pkt_lost writes packet_lost event. + */ +void ngtcp2_qlog_pkt_lost(ngtcp2_qlog *qlog, ngtcp2_rtb_entry *ent); + +/* + * ngtcp2_qlog_retry_pkt_received writes packet_received event for a + * received Retry packet. + */ +void ngtcp2_qlog_retry_pkt_received(ngtcp2_qlog *qlog, const ngtcp2_pkt_hd *hd, + const ngtcp2_pkt_retry *retry); + +/* + * ngtcp2_qlog_stateless_reset_pkt_received writes packet_received + * event for a received Stateless Reset packet. + */ +void ngtcp2_qlog_stateless_reset_pkt_received( + ngtcp2_qlog *qlog, const ngtcp2_pkt_stateless_reset *sr); + +/* + * ngtcp2_qlog_version_negotiation_pkt_received writes packet_received + * event for a received Version Negotiation packet. + */ +void ngtcp2_qlog_version_negotiation_pkt_received(ngtcp2_qlog *qlog, + const ngtcp2_pkt_hd *hd, + const uint32_t *sv, + size_t nsv); + +#endif /* !defined(NGTCP2_QLOG_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_range.c b/contrib/libs/ngtcp2/lib/ngtcp2_range.c new file mode 100644 index 0000000000..7bbefc0175 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_range.c @@ -0,0 +1,63 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_range.h" +#include "ngtcp2_macro.h" + +void ngtcp2_range_init(ngtcp2_range *r, uint64_t begin, uint64_t end) { + r->begin = begin; + r->end = end; +} + +ngtcp2_range ngtcp2_range_intersect(const ngtcp2_range *a, + const ngtcp2_range *b) { + ngtcp2_range r = {0, 0}; + uint64_t begin = ngtcp2_max_uint64(a->begin, b->begin); + uint64_t end = ngtcp2_min_uint64(a->end, b->end); + + if (begin < end) { + ngtcp2_range_init(&r, begin, end); + } + + return r; +} + +uint64_t ngtcp2_range_len(const ngtcp2_range *r) { return r->end - r->begin; } + +int ngtcp2_range_eq(const ngtcp2_range *a, const ngtcp2_range *b) { + return a->begin == b->begin && a->end == b->end; +} + +void ngtcp2_range_cut(ngtcp2_range *left, ngtcp2_range *right, + const ngtcp2_range *a, const ngtcp2_range *b) { + /* Assume that b is included in a */ + left->begin = a->begin; + left->end = b->begin; + right->begin = b->end; + right->end = a->end; +} + +int ngtcp2_range_not_after(const ngtcp2_range *a, const ngtcp2_range *b) { + return a->end <= b->end; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_range.h b/contrib/libs/ngtcp2/lib/ngtcp2_range.h new file mode 100644 index 0000000000..22cd295185 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_range.h @@ -0,0 +1,80 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_RANGE_H +#define NGTCP2_RANGE_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +/* + * ngtcp2_range represents half-closed range [begin, end). + */ +typedef struct ngtcp2_range { + uint64_t begin; + uint64_t end; +} ngtcp2_range; + +/* + * ngtcp2_range_init initializes |r| with the range [|begin|, |end|). + */ +void ngtcp2_range_init(ngtcp2_range *r, uint64_t begin, uint64_t end); + +/* + * ngtcp2_range_intersect returns the intersection of |a| and |b|. If + * they do not overlap, it returns empty range. + */ +ngtcp2_range ngtcp2_range_intersect(const ngtcp2_range *a, + const ngtcp2_range *b); + +/* + * ngtcp2_range_len returns the length of |r|. + */ +uint64_t ngtcp2_range_len(const ngtcp2_range *r); + +/* + * ngtcp2_range_eq returns nonzero if |a| equals |b|, such that + * a->begin == b->begin and a->end == b->end hold. + */ +int ngtcp2_range_eq(const ngtcp2_range *a, const ngtcp2_range *b); + +/* + * ngtcp2_range_cut returns the left and right range after removing + * |b| from |a|. This function assumes that |a| completely includes + * |b|. In other words, a->begin <= b->begin and b->end <= a->end + * hold. + */ +void ngtcp2_range_cut(ngtcp2_range *left, ngtcp2_range *right, + const ngtcp2_range *a, const ngtcp2_range *b); + +/* + * ngtcp2_range_not_after returns nonzero if the right edge of |a| + * does not go beyond of the right edge of |b|. + */ +int ngtcp2_range_not_after(const ngtcp2_range *a, const ngtcp2_range *b); + +#endif /* !defined(NGTCP2_RANGE_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_rcvry.h b/contrib/libs/ngtcp2/lib/ngtcp2_rcvry.h new file mode 100644 index 0000000000..e6321061b5 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_rcvry.h @@ -0,0 +1,40 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_RCVRY_H +#define NGTCP2_RCVRY_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +/* NGTCP2_PKT_THRESHOLD is kPacketThreshold described in RFC 9002. */ +#define NGTCP2_PKT_THRESHOLD 3 + +/* NGTCP2_GRANULARITY is kGranularity described in RFC 9002. */ +#define NGTCP2_GRANULARITY NGTCP2_MILLISECONDS + +#endif /* !defined(NGTCP2_RCVRY_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_ringbuf.c b/contrib/libs/ngtcp2/lib/ngtcp2_ringbuf.c new file mode 100644 index 0000000000..1dab296a80 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_ringbuf.c @@ -0,0 +1,123 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_ringbuf.h" + +#include <assert.h> +#ifdef WIN32 +# include <intrin.h> +#endif /* defined(WIN32) */ + +#include "ngtcp2_macro.h" + +static int ispow2(size_t n) { +#if defined(_MSC_VER) && !defined(__clang__) && \ + (defined(_M_ARM) || (defined(_M_ARM64) && _MSC_VER < 1941)) + return n && !(n & (n - 1)); +#elif defined(WIN32) + return 1 == __popcnt((unsigned int)n); +#else /* !((defined(_MSC_VER) && !defined(__clang__) && (defined(_M_ARM) || \ + (defined(_M_ARM64) && _MSC_VER < 1941))) || defined(WIN32)) */ + return 1 == __builtin_popcount((unsigned int)n); +#endif /* !((defined(_MSC_VER) && !defined(__clang__) && (defined(_M_ARM) || \ + (defined(_M_ARM64) && _MSC_VER < 1941))) || defined(WIN32)) */ +} + +int ngtcp2_ringbuf_init(ngtcp2_ringbuf *rb, size_t nmemb, size_t size, + const ngtcp2_mem *mem) { + uint8_t *buf = ngtcp2_mem_malloc(mem, nmemb * size); + + if (buf == NULL) { + return NGTCP2_ERR_NOMEM; + } + + ngtcp2_ringbuf_buf_init(rb, nmemb, size, buf, mem); + + return 0; +} + +void ngtcp2_ringbuf_buf_init(ngtcp2_ringbuf *rb, size_t nmemb, size_t size, + uint8_t *buf, const ngtcp2_mem *mem) { + assert(ispow2(nmemb)); + + rb->buf = buf; + rb->mem = mem; + rb->mask = nmemb - 1; + rb->size = size; + rb->first = 0; + rb->len = 0; +} + +void ngtcp2_ringbuf_free(ngtcp2_ringbuf *rb) { + if (rb == NULL) { + return; + } + + ngtcp2_mem_free(rb->mem, rb->buf); +} + +void *ngtcp2_ringbuf_push_front(ngtcp2_ringbuf *rb) { + rb->first = (rb->first - 1) & rb->mask; + if (rb->len < rb->mask + 1) { + ++rb->len; + } + + return (void *)&rb->buf[rb->first * rb->size]; +} + +void *ngtcp2_ringbuf_push_back(ngtcp2_ringbuf *rb) { + size_t offset = (rb->first + rb->len) & rb->mask; + + if (rb->len == rb->mask + 1) { + rb->first = (rb->first + 1) & rb->mask; + } else { + ++rb->len; + } + + return (void *)&rb->buf[offset * rb->size]; +} + +void ngtcp2_ringbuf_pop_front(ngtcp2_ringbuf *rb) { + rb->first = (rb->first + 1) & rb->mask; + --rb->len; +} + +void ngtcp2_ringbuf_pop_back(ngtcp2_ringbuf *rb) { + assert(rb->len); + --rb->len; +} + +void ngtcp2_ringbuf_resize(ngtcp2_ringbuf *rb, size_t len) { + assert(len <= rb->mask + 1); + rb->len = len; +} + +void *ngtcp2_ringbuf_get(const ngtcp2_ringbuf *rb, size_t offset) { + assert(offset < rb->len); + offset = (rb->first + offset) & rb->mask; + + return &rb->buf[offset * rb->size]; +} + +int ngtcp2_ringbuf_full(ngtcp2_ringbuf *rb) { return rb->len == rb->mask + 1; } diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_ringbuf.h b/contrib/libs/ngtcp2/lib/ngtcp2_ringbuf.h new file mode 100644 index 0000000000..6953ea6278 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_ringbuf.h @@ -0,0 +1,132 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_RINGBUF_H +#define NGTCP2_RINGBUF_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_mem.h" + +typedef struct ngtcp2_ringbuf { + /* buf points to the underlying buffer. */ + uint8_t *buf; + const ngtcp2_mem *mem; + /* mask is the bit mask to cover all bits for the maximum number of + elements. The maximum number of elements is mask + 1. */ + size_t mask; + /* size is the size of each element. */ + size_t size; + /* first is the offset to the first element. */ + size_t first; + /* len is the number of elements actually stored. */ + size_t len; +} ngtcp2_ringbuf; + +/* + * ngtcp2_ringbuf_init initializes |rb|. |nmemb| is the number of + * elements that can be stored in this buffer. |size| is the size of + * each element. |nmemb| must be power of 2. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_ringbuf_init(ngtcp2_ringbuf *rb, size_t nmemb, size_t size, + const ngtcp2_mem *mem); + +/* + * ngtcp2_ringbuf_buf_init initializes |rb| with given buffer and + * size. Same restrictions are applied as ngtcp2_ringbuf_init. + */ +void ngtcp2_ringbuf_buf_init(ngtcp2_ringbuf *rb, size_t nmemb, size_t size, + uint8_t *buf, const ngtcp2_mem *mem); + +/* + * ngtcp2_ringbuf_free frees resources allocated for |rb|. This + * function does not free the memory pointed by |rb|. + */ +void ngtcp2_ringbuf_free(ngtcp2_ringbuf *rb); + +/* ngtcp2_ringbuf_push_front moves the offset to the first element in + the buffer backward, and returns the pointer to the element. + Caller can store data to the buffer pointed by the returned + pointer. If this action exceeds the capacity of the ring buffer, + this function returns the pointer to the last element, and rb->len + remains unchanged. */ +void *ngtcp2_ringbuf_push_front(ngtcp2_ringbuf *rb); + +/* ngtcp2_ringbuf_push_back moves the offset to the last element in + the buffer forward, and returns the pointer to the element. Caller + can store data to the buffer pointed by the returned pointer. If + this action exceeds the capacity of the ring buffer, this function + returns the pointer to the first element, and rb->len remains + unchanged. */ +void *ngtcp2_ringbuf_push_back(ngtcp2_ringbuf *rb); + +/* + * ngtcp2_ringbuf_pop_front removes first element in |rb|. + */ +void ngtcp2_ringbuf_pop_front(ngtcp2_ringbuf *rb); + +/* + * ngtcp2_ringbuf_pop_back removes the last element in |rb|. + */ +void ngtcp2_ringbuf_pop_back(ngtcp2_ringbuf *rb); + +/* ngtcp2_ringbuf_resize changes the number of elements stored. This + does not change the capacity of the underlying buffer. */ +void ngtcp2_ringbuf_resize(ngtcp2_ringbuf *rb, size_t len); + +/* ngtcp2_ringbuf_get returns the pointer to the element at + |offset|. */ +void *ngtcp2_ringbuf_get(const ngtcp2_ringbuf *rb, size_t offset); + +/* ngtcp2_ringbuf_len returns the number of elements stored. */ +#define ngtcp2_ringbuf_len(RB) ((RB)->len) + +/* ngtcp2_ringbuf_full returns nonzero if |rb| is full. */ +int ngtcp2_ringbuf_full(ngtcp2_ringbuf *rb); + +/* ngtcp2_static_ringbuf_def defines ngtcp2_ringbuf struct wrapper + which uses a statically allocated buffer. ngtcp2_ringbuf_free + should never be called for rb field. */ +#define ngtcp2_static_ringbuf_def(NAME, NMEMB, SIZE) \ + typedef struct ngtcp2_static_ringbuf_##NAME { \ + ngtcp2_ringbuf rb; \ + uint8_t buf[(NMEMB) * (SIZE)]; \ + } ngtcp2_static_ringbuf_##NAME; \ + \ + static inline void ngtcp2_static_ringbuf_##NAME##_init( \ + ngtcp2_static_ringbuf_##NAME *srb) { \ + ngtcp2_ringbuf_buf_init(&srb->rb, (NMEMB), (SIZE), srb->buf, NULL); \ + } + +#endif /* !defined(NGTCP2_RINGBUF_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_rob.c b/contrib/libs/ngtcp2/lib/ngtcp2_rob.c new file mode 100644 index 0000000000..12c7d40976 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_rob.c @@ -0,0 +1,332 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_rob.h" + +#include <string.h> +#include <assert.h> + +#include "ngtcp2_macro.h" + +int ngtcp2_rob_gap_new(ngtcp2_rob_gap **pg, uint64_t begin, uint64_t end, + const ngtcp2_mem *mem) { + *pg = ngtcp2_mem_malloc(mem, sizeof(ngtcp2_rob_gap)); + if (*pg == NULL) { + return NGTCP2_ERR_NOMEM; + } + + (*pg)->range.begin = begin; + (*pg)->range.end = end; + + return 0; +} + +void ngtcp2_rob_gap_del(ngtcp2_rob_gap *g, const ngtcp2_mem *mem) { + ngtcp2_mem_free(mem, g); +} + +int ngtcp2_rob_data_new(ngtcp2_rob_data **pd, uint64_t offset, size_t chunk, + const ngtcp2_mem *mem) { + *pd = ngtcp2_mem_malloc(mem, sizeof(ngtcp2_rob_data) + chunk); + if (*pd == NULL) { + return NGTCP2_ERR_NOMEM; + } + + (*pd)->range.begin = offset; + (*pd)->range.end = offset + chunk; + (*pd)->begin = (uint8_t *)(*pd) + sizeof(ngtcp2_rob_data); + + return 0; +} + +void ngtcp2_rob_data_del(ngtcp2_rob_data *d, const ngtcp2_mem *mem) { + ngtcp2_mem_free(mem, d); +} + +int ngtcp2_rob_init(ngtcp2_rob *rob, size_t chunk, const ngtcp2_mem *mem) { + int rv; + ngtcp2_rob_gap *g; + + ngtcp2_ksl_init(&rob->gapksl, ngtcp2_ksl_range_compar, sizeof(ngtcp2_range), + mem); + + rv = ngtcp2_rob_gap_new(&g, 0, UINT64_MAX, mem); + if (rv != 0) { + goto fail_rob_gap_new; + } + + rv = ngtcp2_ksl_insert(&rob->gapksl, NULL, &g->range, g); + if (rv != 0) { + goto fail_gapksl_ksl_insert; + } + + ngtcp2_ksl_init(&rob->dataksl, ngtcp2_ksl_range_compar, sizeof(ngtcp2_range), + mem); + + rob->chunk = chunk; + rob->mem = mem; + + return 0; + +fail_gapksl_ksl_insert: + ngtcp2_rob_gap_del(g, mem); +fail_rob_gap_new: + ngtcp2_ksl_free(&rob->gapksl); + return rv; +} + +void ngtcp2_rob_free(ngtcp2_rob *rob) { + ngtcp2_ksl_it it; + + if (rob == NULL) { + return; + } + + for (it = ngtcp2_ksl_begin(&rob->dataksl); !ngtcp2_ksl_it_end(&it); + ngtcp2_ksl_it_next(&it)) { + ngtcp2_rob_data_del(ngtcp2_ksl_it_get(&it), rob->mem); + } + + for (it = ngtcp2_ksl_begin(&rob->gapksl); !ngtcp2_ksl_it_end(&it); + ngtcp2_ksl_it_next(&it)) { + ngtcp2_rob_gap_del(ngtcp2_ksl_it_get(&it), rob->mem); + } + + ngtcp2_ksl_free(&rob->dataksl); + ngtcp2_ksl_free(&rob->gapksl); +} + +static int rob_write_data(ngtcp2_rob *rob, uint64_t offset, const uint8_t *data, + size_t len) { + size_t n; + int rv; + ngtcp2_rob_data *d; + ngtcp2_range range = {offset, offset + len}; + ngtcp2_ksl_it it; + + for (it = ngtcp2_ksl_lower_bound_compar(&rob->dataksl, &range, + ngtcp2_ksl_range_exclusive_compar); + len; ngtcp2_ksl_it_next(&it)) { + if (ngtcp2_ksl_it_end(&it)) { + d = NULL; + } else { + d = ngtcp2_ksl_it_get(&it); + } + + if (d == NULL || offset < d->range.begin) { + rv = ngtcp2_rob_data_new(&d, (offset / rob->chunk) * rob->chunk, + rob->chunk, rob->mem); + if (rv != 0) { + return rv; + } + + rv = ngtcp2_ksl_insert(&rob->dataksl, &it, &d->range, d); + if (rv != 0) { + ngtcp2_rob_data_del(d, rob->mem); + return rv; + } + } + + n = (size_t)ngtcp2_min_uint64((uint64_t)len, + d->range.begin + rob->chunk - offset); + memcpy(d->begin + (offset - d->range.begin), data, n); + offset += n; + data += n; + len -= n; + } + + return 0; +} + +int ngtcp2_rob_push(ngtcp2_rob *rob, uint64_t offset, const uint8_t *data, + size_t datalen) { + int rv; + ngtcp2_rob_gap *g; + ngtcp2_range m, l, r, q = {offset, offset + datalen}; + ngtcp2_ksl_it it; + + it = ngtcp2_ksl_lower_bound_compar(&rob->gapksl, &q, + ngtcp2_ksl_range_exclusive_compar); + + for (; !ngtcp2_ksl_it_end(&it);) { + g = ngtcp2_ksl_it_get(&it); + + m = ngtcp2_range_intersect(&q, &g->range); + if (!ngtcp2_range_len(&m)) { + break; + } + + if (ngtcp2_range_eq(&g->range, &m)) { + ngtcp2_ksl_remove_hint(&rob->gapksl, &it, &it, &g->range); + ngtcp2_rob_gap_del(g, rob->mem); + + rv = rob_write_data(rob, m.begin, data + (m.begin - offset), + (size_t)ngtcp2_range_len(&m)); + if (rv != 0) { + return rv; + } + + continue; + } + + ngtcp2_range_cut(&l, &r, &g->range, &m); + + if (ngtcp2_range_len(&l)) { + ngtcp2_ksl_update_key(&rob->gapksl, &g->range, &l); + g->range = l; + + if (ngtcp2_range_len(&r)) { + ngtcp2_rob_gap *ng; + + rv = ngtcp2_rob_gap_new(&ng, r.begin, r.end, rob->mem); + if (rv != 0) { + return rv; + } + + rv = ngtcp2_ksl_insert(&rob->gapksl, &it, &ng->range, ng); + if (rv != 0) { + ngtcp2_rob_gap_del(ng, rob->mem); + return rv; + } + } + } else if (ngtcp2_range_len(&r)) { + ngtcp2_ksl_update_key(&rob->gapksl, &g->range, &r); + g->range = r; + } + + rv = rob_write_data(rob, m.begin, data + (m.begin - offset), + (size_t)ngtcp2_range_len(&m)); + if (rv != 0) { + return rv; + } + + ngtcp2_ksl_it_next(&it); + } + + return 0; +} + +void ngtcp2_rob_remove_prefix(ngtcp2_rob *rob, uint64_t offset) { + ngtcp2_rob_gap *g; + ngtcp2_rob_data *d; + ngtcp2_ksl_it it; + + it = ngtcp2_ksl_begin(&rob->gapksl); + + for (; !ngtcp2_ksl_it_end(&it);) { + g = ngtcp2_ksl_it_get(&it); + if (offset <= g->range.begin) { + break; + } + + if (offset < g->range.end) { + ngtcp2_range r = {offset, g->range.end}; + + ngtcp2_ksl_update_key(&rob->gapksl, &g->range, &r); + g->range.begin = offset; + + break; + } + + ngtcp2_ksl_remove_hint(&rob->gapksl, &it, &it, &g->range); + ngtcp2_rob_gap_del(g, rob->mem); + } + + it = ngtcp2_ksl_begin(&rob->dataksl); + + for (; !ngtcp2_ksl_it_end(&it);) { + d = ngtcp2_ksl_it_get(&it); + if (offset < d->range.begin + rob->chunk) { + return; + } + + ngtcp2_ksl_remove_hint(&rob->dataksl, &it, &it, &d->range); + ngtcp2_rob_data_del(d, rob->mem); + } +} + +size_t ngtcp2_rob_data_at(const ngtcp2_rob *rob, const uint8_t **pdest, + uint64_t offset) { + ngtcp2_rob_gap *g; + ngtcp2_rob_data *d; + ngtcp2_ksl_it it; + + it = ngtcp2_ksl_begin(&rob->gapksl); + if (ngtcp2_ksl_it_end(&it)) { + return 0; + } + + g = ngtcp2_ksl_it_get(&it); + + if (g->range.begin <= offset) { + return 0; + } + + it = ngtcp2_ksl_begin(&rob->dataksl); + d = ngtcp2_ksl_it_get(&it); + + assert(d); + assert(d->range.begin <= offset); + assert(offset < d->range.begin + rob->chunk); + + *pdest = d->begin + (offset - d->range.begin); + + return ( + size_t)(ngtcp2_min_uint64(g->range.begin, d->range.begin + rob->chunk) - + offset); +} + +void ngtcp2_rob_pop(ngtcp2_rob *rob, uint64_t offset, size_t len) { + ngtcp2_ksl_it it; + ngtcp2_rob_data *d; + + it = ngtcp2_ksl_begin(&rob->dataksl); + d = ngtcp2_ksl_it_get(&it); + + assert(d); + + if (offset + len < d->range.begin + rob->chunk) { + return; + } + + ngtcp2_ksl_remove_hint(&rob->dataksl, NULL, &it, &d->range); + ngtcp2_rob_data_del(d, rob->mem); +} + +uint64_t ngtcp2_rob_first_gap_offset(const ngtcp2_rob *rob) { + ngtcp2_ksl_it it = ngtcp2_ksl_begin(&rob->gapksl); + ngtcp2_rob_gap *g; + + if (ngtcp2_ksl_it_end(&it)) { + return UINT64_MAX; + } + + g = ngtcp2_ksl_it_get(&it); + + return g->range.begin; +} + +int ngtcp2_rob_data_buffered(const ngtcp2_rob *rob) { + return ngtcp2_ksl_len(&rob->dataksl) != 0; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_rob.h b/contrib/libs/ngtcp2/lib/ngtcp2_rob.h new file mode 100644 index 0000000000..d53b5160b1 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_rob.h @@ -0,0 +1,191 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_ROB_H +#define NGTCP2_ROB_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_mem.h" +#include "ngtcp2_range.h" +#include "ngtcp2_ksl.h" + +/* + * ngtcp2_rob_gap represents the gap, which is the range of stream + * data that is not received yet. + */ +typedef struct ngtcp2_rob_gap { + /* range is the range of this gap. */ + ngtcp2_range range; +} ngtcp2_rob_gap; + +/* + * ngtcp2_rob_gap_new allocates new ngtcp2_rob_gap object, and assigns + * its pointer to |*pg|. The caller should call ngtcp2_rob_gap_del to + * delete it when it is no longer used. The range of the gap is + * [begin, end). |mem| is custom memory allocator to allocate memory. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_rob_gap_new(ngtcp2_rob_gap **pg, uint64_t begin, uint64_t end, + const ngtcp2_mem *mem); + +/* + * ngtcp2_rob_gap_del deallocates |g|. It deallocates the memory + * pointed by |g| it self. |mem| is custom memory allocator to + * deallocate memory. + */ +void ngtcp2_rob_gap_del(ngtcp2_rob_gap *g, const ngtcp2_mem *mem); + +/* + * ngtcp2_rob_data holds the buffered stream data. + */ +typedef struct ngtcp2_rob_data { + /* range is the range of this data. */ + ngtcp2_range range; + /* begin points to the buffer. */ + uint8_t *begin; +} ngtcp2_rob_data; + +/* + * ngtcp2_rob_data_new allocates new ngtcp2_rob_data object, and + * assigns its pointer to |*pd|. The caller should call + * ngtcp2_rob_data_del to delete it when it is no longer used. + * |offset| is the stream offset of the first byte of this data. + * |chunk| is the size of the buffer. |offset| must be multiple of + * |chunk|. |mem| is custom memory allocator to allocate memory. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_rob_data_new(ngtcp2_rob_data **pd, uint64_t offset, size_t chunk, + const ngtcp2_mem *mem); + +/* + * ngtcp2_rob_data_del deallocates |d|. It deallocates the memory + * pointed by |d| itself. |mem| is custom memory allocator to + * deallocate memory. + */ +void ngtcp2_rob_data_del(ngtcp2_rob_data *d, const ngtcp2_mem *mem); + +/* + * ngtcp2_rob is the reorder buffer which reassembles stream data + * received in out of order. + */ +typedef struct ngtcp2_rob { + /* gapksl maintains the range of offset which is not received + yet. Initially, its range is [0, UINT64_MAX). */ + ngtcp2_ksl gapksl; + /* dataksl maintains the buffers which store received out-of-order + data ordered by stream offset. */ + ngtcp2_ksl dataksl; + /* mem is custom memory allocator */ + const ngtcp2_mem *mem; + /* chunk is the size of each buffer in data field */ + size_t chunk; +} ngtcp2_rob; + +/* + * ngtcp2_rob_init initializes |rob|. |chunk| is the size of buffer + * per chunk. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_rob_init(ngtcp2_rob *rob, size_t chunk, const ngtcp2_mem *mem); + +/* + * ngtcp2_rob_free frees resources allocated for |rob|. + */ +void ngtcp2_rob_free(ngtcp2_rob *rob); + +/* + * ngtcp2_rob_push adds new data pointed by |data| of length |datalen| + * at the stream offset |offset|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + */ +int ngtcp2_rob_push(ngtcp2_rob *rob, uint64_t offset, const uint8_t *data, + size_t datalen); + +/* + * ngtcp2_rob_remove_prefix removes gap up to |offset|, exclusive. It + * also removes buffered data if it is completely included in + * |offset|. + */ +void ngtcp2_rob_remove_prefix(ngtcp2_rob *rob, uint64_t offset); + +/* + * ngtcp2_rob_data_at stores the pointer to the buffer of stream + * offset |offset| to |*pdest| if it is available, and returns the + * valid length of available data. If no data is available, it + * returns 0. This function only returns the data before the first + * gap. It returns 0 even if data is available after the first gap. + */ +size_t ngtcp2_rob_data_at(const ngtcp2_rob *rob, const uint8_t **pdest, + uint64_t offset); + +/* + * ngtcp2_rob_pop clears data at stream offset |offset| of length + * |len|. + * + * |offset| must be the offset given in ngtcp2_rob_data_at. |len| + * must be the return value of ngtcp2_rob_data_at when |offset| is + * passed. + * + * Caller should call this function from offset 0 in non-decreasing + * order. + */ +void ngtcp2_rob_pop(ngtcp2_rob *rob, uint64_t offset, size_t len); + +/* + * ngtcp2_rob_first_gap_offset returns the offset to the first gap. + * If there is no gap, it returns UINT64_MAX. + */ +uint64_t ngtcp2_rob_first_gap_offset(const ngtcp2_rob *rob); + +/* + * ngtcp2_rob_data_buffered returns nonzero if any data is buffered. + */ +int ngtcp2_rob_data_buffered(const ngtcp2_rob *rob); + +#endif /* !defined(NGTCP2_ROB_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_rst.c b/contrib/libs/ngtcp2/lib/ngtcp2_rst.c new file mode 100644 index 0000000000..89c89acdc2 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_rst.c @@ -0,0 +1,131 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_rst.h" + +#include <assert.h> + +#include "ngtcp2_rtb.h" +#include "ngtcp2_cc.h" +#include "ngtcp2_macro.h" +#include "ngtcp2_conn_stat.h" + +void ngtcp2_rs_init(ngtcp2_rs *rs) { + rs->interval = UINT64_MAX; + rs->delivered = 0; + rs->prior_delivered = 0; + rs->prior_ts = UINT64_MAX; + rs->tx_in_flight = 0; + rs->lost = 0; + rs->prior_lost = 0; + rs->send_elapsed = 0; + rs->ack_elapsed = 0; + rs->last_end_seq = -1; + rs->is_app_limited = 0; +} + +void ngtcp2_rst_init(ngtcp2_rst *rst) { + ngtcp2_rs_init(&rst->rs); + rst->delivered = 0; + rst->delivered_ts = 0; + rst->first_sent_ts = 0; + rst->app_limited = 0; + rst->is_cwnd_limited = 0; + rst->lost = 0; + rst->last_seq = -1; +} + +void ngtcp2_rst_on_pkt_sent(ngtcp2_rst *rst, ngtcp2_rtb_entry *ent, + const ngtcp2_conn_stat *cstat) { + if (cstat->bytes_in_flight == 0) { + rst->first_sent_ts = rst->delivered_ts = ent->ts; + } + ent->rst.first_sent_ts = rst->first_sent_ts; + ent->rst.delivered_ts = rst->delivered_ts; + ent->rst.delivered = rst->delivered; + ent->rst.is_app_limited = rst->app_limited != 0; + ent->rst.tx_in_flight = cstat->bytes_in_flight + ent->pktlen; + ent->rst.lost = rst->lost; + ent->rst.end_seq = ++rst->last_seq; +} + +void ngtcp2_rst_on_ack_recv(ngtcp2_rst *rst, ngtcp2_conn_stat *cstat) { + ngtcp2_rs *rs = &rst->rs; + + if (rst->app_limited && rst->delivered > rst->app_limited) { + rst->app_limited = 0; + } + + if (rs->prior_ts == UINT64_MAX) { + return; + } + + rs->interval = ngtcp2_max_uint64(rs->send_elapsed, rs->ack_elapsed); + + rs->delivered = rst->delivered - rs->prior_delivered; + rs->lost = rst->lost - rs->prior_lost; + + if (rs->interval < cstat->min_rtt) { + rs->interval = UINT64_MAX; + return; + } + + if (!rs->interval) { + return; + } + + cstat->delivery_rate_sec = rs->delivered * NGTCP2_SECONDS / rs->interval; +} + +static int rst_is_newest_pkt(const ngtcp2_rst *rst, const ngtcp2_rtb_entry *ent, + const ngtcp2_rs *rs) { + return ent->ts > rst->first_sent_ts || + (ent->ts == rst->first_sent_ts && ent->rst.end_seq > rs->last_end_seq); +} + +void ngtcp2_rst_update_rate_sample(ngtcp2_rst *rst, const ngtcp2_rtb_entry *ent, + ngtcp2_tstamp ts) { + ngtcp2_rs *rs = &rst->rs; + + rst->delivered += ent->pktlen; + rst->delivered_ts = ts; + + if (rs->prior_ts == UINT64_MAX || rst_is_newest_pkt(rst, ent, rs)) { + rs->prior_delivered = ent->rst.delivered; + rs->prior_ts = ent->rst.delivered_ts; + rs->is_app_limited = ent->rst.is_app_limited; + rs->send_elapsed = ent->ts - ent->rst.first_sent_ts; + rs->ack_elapsed = rst->delivered_ts - ent->rst.delivered_ts; + rs->tx_in_flight = ent->rst.tx_in_flight; + rs->prior_lost = ent->rst.lost; + rs->last_end_seq = ent->rst.end_seq; + rst->first_sent_ts = ent->ts; + } +} + +void ngtcp2_rst_update_app_limited(ngtcp2_rst *rst, ngtcp2_conn_stat *cstat) { + (void)rst; + (void)cstat; + /* TODO Not implemented */ +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_rst.h b/contrib/libs/ngtcp2/lib/ngtcp2_rst.h new file mode 100644 index 0000000000..95616eee97 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_rst.h @@ -0,0 +1,88 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_RST_H +#define NGTCP2_RST_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_window_filter.h" + +typedef struct ngtcp2_rtb_entry ngtcp2_rtb_entry; +typedef struct ngtcp2_conn_stat ngtcp2_conn_stat; + +/** + * @struct + * + * ngtcp2_rs contains connection state for delivery rate estimation. + */ +typedef struct ngtcp2_rs { + ngtcp2_duration interval; + uint64_t delivered; + uint64_t prior_delivered; + ngtcp2_tstamp prior_ts; + uint64_t tx_in_flight; + uint64_t lost; + uint64_t prior_lost; + ngtcp2_duration send_elapsed; + ngtcp2_duration ack_elapsed; + int64_t last_end_seq; + int is_app_limited; +} ngtcp2_rs; + +void ngtcp2_rs_init(ngtcp2_rs *rs); + +/* + * ngtcp2_rst implements delivery rate estimation described in + * https://ietf-wg-ccwg.github.io/draft-cardwell-ccwg-bbr/draft-cardwell-ccwg-bbr.html + */ +typedef struct ngtcp2_rst { + ngtcp2_rs rs; + uint64_t delivered; + ngtcp2_tstamp delivered_ts; + ngtcp2_tstamp first_sent_ts; + uint64_t app_limited; + uint64_t lost; + /* last_seq is the sequence number of packets across all packet + number spaces. If we would adopt single packet number sequence + across all packet number spaces, we can replace this with a + packet number. */ + int64_t last_seq; + int is_cwnd_limited; +} ngtcp2_rst; + +void ngtcp2_rst_init(ngtcp2_rst *rst); + +void ngtcp2_rst_on_pkt_sent(ngtcp2_rst *rst, ngtcp2_rtb_entry *ent, + const ngtcp2_conn_stat *cstat); +void ngtcp2_rst_on_ack_recv(ngtcp2_rst *rst, ngtcp2_conn_stat *cstat); +void ngtcp2_rst_update_rate_sample(ngtcp2_rst *rst, const ngtcp2_rtb_entry *ent, + ngtcp2_tstamp ts); +void ngtcp2_rst_update_app_limited(ngtcp2_rst *rst, ngtcp2_conn_stat *cstat); + +#endif /* !defined(NGTCP2_RST_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_rtb.c b/contrib/libs/ngtcp2/lib/ngtcp2_rtb.c new file mode 100644 index 0000000000..008ba470c2 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_rtb.c @@ -0,0 +1,1508 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_rtb.h" + +#include <assert.h> +#include <string.h> + +#include "ngtcp2_macro.h" +#include "ngtcp2_conn.h" +#include "ngtcp2_log.h" +#include "ngtcp2_vec.h" +#include "ngtcp2_cc.h" +#include "ngtcp2_rcvry.h" +#include "ngtcp2_rst.h" +#include "ngtcp2_unreachable.h" +#include "ngtcp2_tstamp.h" +#include "ngtcp2_frame_chain.h" + +ngtcp2_objalloc_def(rtb_entry, ngtcp2_rtb_entry, oplent); + +static void rtb_entry_init(ngtcp2_rtb_entry *ent, const ngtcp2_pkt_hd *hd, + ngtcp2_frame_chain *frc, ngtcp2_tstamp ts, + size_t pktlen, uint16_t flags) { + memset(ent, 0, sizeof(*ent)); + + ent->hd.pkt_num = hd->pkt_num; + ent->hd.type = hd->type; + ent->hd.flags = hd->flags; + ent->frc = frc; + ent->ts = ts; + ent->lost_ts = UINT64_MAX; + ent->pktlen = pktlen; + ent->flags = flags; +} + +int ngtcp2_rtb_entry_objalloc_new(ngtcp2_rtb_entry **pent, + const ngtcp2_pkt_hd *hd, + ngtcp2_frame_chain *frc, ngtcp2_tstamp ts, + size_t pktlen, uint16_t flags, + ngtcp2_objalloc *objalloc) { + *pent = ngtcp2_objalloc_rtb_entry_get(objalloc); + if (*pent == NULL) { + return NGTCP2_ERR_NOMEM; + } + + rtb_entry_init(*pent, hd, frc, ts, pktlen, flags); + + return 0; +} + +void ngtcp2_rtb_entry_objalloc_del(ngtcp2_rtb_entry *ent, + ngtcp2_objalloc *objalloc, + ngtcp2_objalloc *frc_objalloc, + const ngtcp2_mem *mem) { + ngtcp2_frame_chain_list_objalloc_del(ent->frc, frc_objalloc, mem); + + ent->frc = NULL; + + ngtcp2_objalloc_rtb_entry_release(objalloc, ent); +} + +static int greater(const ngtcp2_ksl_key *lhs, const ngtcp2_ksl_key *rhs) { + return *(int64_t *)lhs > *(int64_t *)rhs; +} + +void ngtcp2_rtb_init(ngtcp2_rtb *rtb, ngtcp2_rst *rst, ngtcp2_cc *cc, + int64_t cc_pkt_num, ngtcp2_log *log, ngtcp2_qlog *qlog, + ngtcp2_objalloc *rtb_entry_objalloc, + ngtcp2_objalloc *frc_objalloc, const ngtcp2_mem *mem) { + rtb->rtb_entry_objalloc = rtb_entry_objalloc; + rtb->frc_objalloc = frc_objalloc; + ngtcp2_ksl_init(&rtb->ents, greater, sizeof(int64_t), mem); + rtb->rst = rst; + rtb->cc = cc; + rtb->log = log; + rtb->qlog = qlog; + rtb->mem = mem; + rtb->largest_acked_tx_pkt_num = -1; + rtb->num_ack_eliciting = 0; + rtb->num_retransmittable = 0; + rtb->num_pto_eliciting = 0; + rtb->probe_pkt_left = 0; + rtb->cc_pkt_num = cc_pkt_num; + rtb->cc_bytes_in_flight = 0; + rtb->persistent_congestion_start_ts = UINT64_MAX; + rtb->num_lost_pkts = 0; + rtb->num_lost_pmtud_pkts = 0; +} + +void ngtcp2_rtb_free(ngtcp2_rtb *rtb) { + ngtcp2_ksl_it it; + + if (rtb == NULL) { + return; + } + + it = ngtcp2_ksl_begin(&rtb->ents); + + for (; !ngtcp2_ksl_it_end(&it); ngtcp2_ksl_it_next(&it)) { + ngtcp2_rtb_entry_objalloc_del(ngtcp2_ksl_it_get(&it), + rtb->rtb_entry_objalloc, rtb->frc_objalloc, + rtb->mem); + } + + ngtcp2_ksl_free(&rtb->ents); +} + +static void rtb_on_add(ngtcp2_rtb *rtb, ngtcp2_rtb_entry *ent, + ngtcp2_conn_stat *cstat) { + ngtcp2_rst_on_pkt_sent(rtb->rst, ent, cstat); + + assert(rtb->cc_pkt_num <= ent->hd.pkt_num); + + cstat->bytes_in_flight += ent->pktlen; + rtb->cc_bytes_in_flight += ent->pktlen; + + ngtcp2_rst_update_app_limited(rtb->rst, cstat); + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) { + ++rtb->num_ack_eliciting; + } + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE) { + ++rtb->num_retransmittable; + } + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING) { + ++rtb->num_pto_eliciting; + } +} + +static size_t rtb_on_remove(ngtcp2_rtb *rtb, ngtcp2_rtb_entry *ent, + ngtcp2_conn_stat *cstat) { + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED) { + assert(rtb->num_lost_pkts); + --rtb->num_lost_pkts; + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_PMTUD_PROBE) { + assert(rtb->num_lost_pmtud_pkts); + --rtb->num_lost_pmtud_pkts; + } + + return 0; + } + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) { + assert(rtb->num_ack_eliciting); + --rtb->num_ack_eliciting; + } + + if ((ent->flags & NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE) && + !(ent->flags & NGTCP2_RTB_ENTRY_FLAG_PTO_RECLAIMED)) { + assert(rtb->num_retransmittable); + --rtb->num_retransmittable; + } + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING) { + assert(rtb->num_pto_eliciting); + --rtb->num_pto_eliciting; + } + + if (rtb->cc_pkt_num <= ent->hd.pkt_num) { + assert(cstat->bytes_in_flight >= ent->pktlen); + cstat->bytes_in_flight -= ent->pktlen; + + assert(rtb->cc_bytes_in_flight >= ent->pktlen); + rtb->cc_bytes_in_flight -= ent->pktlen; + + /* If PMTUD packet is lost, we do not report the lost bytes to the + caller in order to ignore loss of PMTUD packet. */ + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_PMTUD_PROBE) { + return 0; + } + + return ent->pktlen; + } + + return 0; +} + +/* NGTCP2_RECLAIM_FLAG_NONE indicates that no flag is set. */ +#define NGTCP2_RECLAIM_FLAG_NONE 0x00u +/* NGTCP2_RECLAIM_FLAG_ON_LOSS indicates that frames are reclaimed + because of the packet loss.*/ +#define NGTCP2_RECLAIM_FLAG_ON_LOSS 0x01u + +/* + * rtb_reclaim_frame copies and queues frames included in |ent| for + * retransmission. The frames are not deleted from |ent|. It returns + * the number of frames queued. |flags| is bitwise OR of 0 or more of + * NGTCP2_RECLAIM_FLAG_*. + */ +static ngtcp2_ssize rtb_reclaim_frame(ngtcp2_rtb *rtb, uint8_t flags, + ngtcp2_conn *conn, ngtcp2_pktns *pktns, + ngtcp2_rtb_entry *ent) { + ngtcp2_frame_chain *frc, *nfrc, **pfrc = &pktns->tx.frq; + ngtcp2_frame *fr; + ngtcp2_strm *strm; + ngtcp2_range gap, range; + size_t num_reclaimed = 0; + int rv; + + assert(ent->flags & NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE); + + /* TODO Reconsider the order of pfrc */ + for (frc = ent->frc; frc; frc = frc->next) { + fr = &frc->fr; + + /* Check that a late ACK acknowledged this frame. */ + if (frc->binder && + (frc->binder->flags & NGTCP2_FRAME_CHAIN_BINDER_FLAG_ACK)) { + continue; + } + + switch (frc->fr.type) { + case NGTCP2_FRAME_STREAM: + strm = ngtcp2_conn_find_stream(conn, fr->stream.stream_id); + if (strm == NULL || (strm->flags & NGTCP2_STRM_FLAG_RESET_STREAM)) { + continue; + } + + gap = ngtcp2_strm_get_unacked_range_after(strm, fr->stream.offset); + + range.begin = fr->stream.offset; + range.end = + fr->stream.offset + ngtcp2_vec_len(fr->stream.data, fr->stream.datacnt); + range = ngtcp2_range_intersect(&range, &gap); + + if (ngtcp2_range_len(&range) == 0) { + if (!fr->stream.fin) { + /* 0 length STREAM frame with offset == 0 must be + retransmitted if no non-empty data are sent to this + stream, and no data in this stream are acknowledged. */ + if (fr->stream.offset != 0 || fr->stream.datacnt != 0 || + strm->tx.offset || (strm->flags & NGTCP2_STRM_FLAG_ANY_ACKED)) { + continue; + } + } else if (strm->flags & NGTCP2_STRM_FLAG_FIN_ACKED) { + continue; + } + } + + if ((flags & NGTCP2_RECLAIM_FLAG_ON_LOSS) && + ent->hd.pkt_num != strm->tx.last_lost_pkt_num) { + strm->tx.last_lost_pkt_num = ent->hd.pkt_num; + ++strm->tx.loss_count; + } + + rv = ngtcp2_frame_chain_stream_datacnt_objalloc_new( + &nfrc, fr->stream.datacnt, rtb->frc_objalloc, rtb->mem); + if (rv != 0) { + return rv; + } + + nfrc->fr = *fr; + ngtcp2_vec_copy(nfrc->fr.stream.data, fr->stream.data, + fr->stream.datacnt); + + rv = ngtcp2_strm_streamfrq_push(strm, nfrc); + if (rv != 0) { + ngtcp2_frame_chain_objalloc_del(nfrc, rtb->frc_objalloc, rtb->mem); + return rv; + } + + if (!ngtcp2_strm_is_tx_queued(strm)) { + strm->cycle = ngtcp2_conn_tx_strmq_first_cycle(conn); + + rv = ngtcp2_conn_tx_strmq_push(conn, strm); + if (rv != 0) { + return rv; + } + } + + ++num_reclaimed; + + continue; + case NGTCP2_FRAME_CRYPTO: + /* Do not resend CRYPTO frame if the whole region it contains + has been acknowledged */ + gap = ngtcp2_strm_get_unacked_range_after(&pktns->crypto.strm, + fr->stream.offset); + + range.begin = fr->stream.offset; + range.end = + fr->stream.offset + ngtcp2_vec_len(fr->stream.data, fr->stream.datacnt); + range = ngtcp2_range_intersect(&range, &gap); + + if (ngtcp2_range_len(&range) == 0) { + continue; + } + + rv = ngtcp2_frame_chain_stream_datacnt_objalloc_new( + &nfrc, fr->stream.datacnt, rtb->frc_objalloc, rtb->mem); + if (rv != 0) { + return rv; + } + + nfrc->fr = *fr; + ngtcp2_vec_copy(nfrc->fr.stream.data, fr->stream.data, + fr->stream.datacnt); + + rv = ngtcp2_strm_streamfrq_push(&pktns->crypto.strm, nfrc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + ngtcp2_frame_chain_objalloc_del(nfrc, rtb->frc_objalloc, rtb->mem); + return rv; + } + + ++num_reclaimed; + + continue; + case NGTCP2_FRAME_NEW_TOKEN: + rv = ngtcp2_frame_chain_new_token_objalloc_new( + &nfrc, fr->new_token.token, fr->new_token.tokenlen, rtb->frc_objalloc, + rtb->mem); + if (rv != 0) { + return rv; + } + + rv = ngtcp2_bind_frame_chains(frc, nfrc, rtb->mem); + if (rv != 0) { + return rv; + } + + ++num_reclaimed; + + nfrc->next = *pfrc; + *pfrc = nfrc; + pfrc = &nfrc->next; + + continue; + case NGTCP2_FRAME_DATAGRAM: + case NGTCP2_FRAME_DATAGRAM_LEN: + continue; + case NGTCP2_FRAME_RESET_STREAM: + strm = ngtcp2_conn_find_stream(conn, fr->reset_stream.stream_id); + if (strm == NULL || !ngtcp2_strm_require_retransmit_reset_stream(strm)) { + continue; + } + + break; + case NGTCP2_FRAME_STOP_SENDING: + strm = ngtcp2_conn_find_stream(conn, fr->stop_sending.stream_id); + if (strm == NULL || !ngtcp2_strm_require_retransmit_stop_sending(strm)) { + continue; + } + + break; + case NGTCP2_FRAME_MAX_STREAM_DATA: + strm = ngtcp2_conn_find_stream(conn, fr->max_stream_data.stream_id); + if (strm == NULL || !ngtcp2_strm_require_retransmit_max_stream_data( + strm, &fr->max_stream_data)) { + continue; + } + + break; + case NGTCP2_FRAME_STREAM_DATA_BLOCKED: + strm = ngtcp2_conn_find_stream(conn, fr->stream_data_blocked.stream_id); + if (strm == NULL || !ngtcp2_strm_require_retransmit_stream_data_blocked( + strm, &fr->stream_data_blocked)) { + continue; + } + + break; + } + + rv = ngtcp2_frame_chain_objalloc_new(&nfrc, rtb->frc_objalloc); + if (rv != 0) { + return rv; + } + + nfrc->fr = *fr; + + rv = ngtcp2_bind_frame_chains(frc, nfrc, rtb->mem); + if (rv != 0) { + return rv; + } + + ++num_reclaimed; + + nfrc->next = *pfrc; + *pfrc = nfrc; + pfrc = &nfrc->next; + } + + return (ngtcp2_ssize)num_reclaimed; +} + +/* + * conn_process_lost_datagram calls ngtcp2_lost_datagram callback for + * lost DATAGRAM frames. + */ +static int conn_process_lost_datagram(ngtcp2_conn *conn, + ngtcp2_rtb_entry *ent) { + ngtcp2_frame_chain *frc; + int rv; + + for (frc = ent->frc; frc; frc = frc->next) { + switch (frc->fr.type) { + case NGTCP2_FRAME_DATAGRAM: + case NGTCP2_FRAME_DATAGRAM_LEN: + assert(conn->callbacks.lost_datagram); + + rv = conn->callbacks.lost_datagram(conn, frc->fr.datagram.dgram_id, + conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + break; + } + } + + return 0; +} + +static int rtb_on_pkt_lost(ngtcp2_rtb *rtb, ngtcp2_rtb_entry *ent, + ngtcp2_conn_stat *cstat, ngtcp2_conn *conn, + ngtcp2_pktns *pktns, ngtcp2_tstamp ts) { + int rv; + ngtcp2_ssize reclaimed; + ngtcp2_cc *cc = rtb->cc; + ngtcp2_cc_pkt pkt; + + ngtcp2_log_pkt_lost(rtb->log, ent->hd.pkt_num, ent->hd.type, ent->hd.flags, + ent->ts); + + if (rtb->qlog) { + ngtcp2_qlog_pkt_lost(rtb->qlog, ent); + } + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_PMTUD_PROBE) { + ++rtb->num_lost_pmtud_pkts; + } else if (rtb->cc->on_pkt_lost) { + cc->on_pkt_lost(cc, cstat, + ngtcp2_cc_pkt_init(&pkt, ent->hd.pkt_num, ent->pktlen, + pktns->id, ent->ts, ent->rst.lost, + ent->rst.tx_in_flight, + ent->rst.is_app_limited), + ts); + } + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_PTO_RECLAIMED) { + ngtcp2_log_info(rtb->log, NGTCP2_LOG_EVENT_LDC, + "pkn=%" PRId64 " has already been reclaimed on PTO", + ent->hd.pkt_num); + assert(!(ent->flags & NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED)); + assert(UINT64_MAX == ent->lost_ts); + } else { + if (conn->callbacks.lost_datagram && + (ent->flags & NGTCP2_RTB_ENTRY_FLAG_DATAGRAM)) { + rv = conn_process_lost_datagram(conn, ent); + if (rv != 0) { + return rv; + } + } + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE) { + assert(ent->frc); + assert(!(ent->flags & NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED)); + assert(UINT64_MAX == ent->lost_ts); + + reclaimed = + rtb_reclaim_frame(rtb, NGTCP2_RECLAIM_FLAG_ON_LOSS, conn, pktns, ent); + if (reclaimed < 0) { + return (int)reclaimed; + } + } + } + + ent->flags |= NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED; + ent->lost_ts = ts; + + ++rtb->num_lost_pkts; + + return 0; +} + +int ngtcp2_rtb_add(ngtcp2_rtb *rtb, ngtcp2_rtb_entry *ent, + ngtcp2_conn_stat *cstat) { + int rv; + + rv = ngtcp2_ksl_insert(&rtb->ents, NULL, &ent->hd.pkt_num, ent); + if (rv != 0) { + return rv; + } + + rtb_on_add(rtb, ent, cstat); + + return 0; +} + +ngtcp2_ksl_it ngtcp2_rtb_head(const ngtcp2_rtb *rtb) { + return ngtcp2_ksl_begin(&rtb->ents); +} + +static void rtb_remove(ngtcp2_rtb *rtb, ngtcp2_ksl_it *it, + ngtcp2_rtb_entry **pent, ngtcp2_rtb_entry *ent, + ngtcp2_conn_stat *cstat) { + int rv; + (void)rv; + + rv = ngtcp2_ksl_remove_hint(&rtb->ents, it, it, &ent->hd.pkt_num); + assert(0 == rv); + rtb_on_remove(rtb, ent, cstat); + + assert(ent->next == NULL); + + ngtcp2_list_insert(ent, pent); +} + +static void conn_ack_crypto_data(ngtcp2_conn *conn, ngtcp2_pktns *pktns, + uint64_t datalen) { + ngtcp2_buf_chain **pbufchain, *bufchain; + size_t left; + + for (pbufchain = &pktns->crypto.tx.data; *pbufchain;) { + left = ngtcp2_buf_len(&(*pbufchain)->buf); + if (left > datalen) { + (*pbufchain)->buf.pos += datalen; + return; + } + + bufchain = *pbufchain; + *pbufchain = bufchain->next; + + ngtcp2_mem_free(conn->mem, bufchain); + + datalen -= left; + + if (datalen == 0) { + return; + } + } + + assert(datalen == 0); + + return; +} + +static int process_acked_pkt(ngtcp2_rtb_entry *ent, ngtcp2_conn *conn, + ngtcp2_pktns *pktns) { + ngtcp2_frame_chain *frc; + uint64_t prev_stream_offset, stream_offset; + ngtcp2_strm *strm; + int rv; + uint64_t datalen; + ngtcp2_strm *crypto = &pktns->crypto.strm; + + if ((ent->flags & NGTCP2_RTB_ENTRY_FLAG_PMTUD_PROBE) && conn->pmtud && + conn->pmtud->tx_pkt_num <= ent->hd.pkt_num) { + ngtcp2_pmtud_probe_success(conn->pmtud, ent->pktlen); + + if (conn->dcid.current.max_udp_payload_size < ent->pktlen) { + conn->dcid.current.max_udp_payload_size = ent->pktlen; + conn->cstat.max_tx_udp_payload_size = + ngtcp2_conn_get_path_max_tx_udp_payload_size(conn); + } + + if (ngtcp2_pmtud_finished(conn->pmtud)) { + ngtcp2_conn_stop_pmtud(conn); + } + } + + for (frc = ent->frc; frc; frc = frc->next) { + if (frc->binder) { + if (frc->binder->flags & NGTCP2_FRAME_CHAIN_BINDER_FLAG_ACK) { + continue; + } + + frc->binder->flags |= NGTCP2_FRAME_CHAIN_BINDER_FLAG_ACK; + } + + switch (frc->fr.type) { + case NGTCP2_FRAME_STREAM: + strm = ngtcp2_conn_find_stream(conn, frc->fr.stream.stream_id); + if (strm == NULL) { + break; + } + + strm->flags |= NGTCP2_STRM_FLAG_ANY_ACKED; + + if (frc->fr.stream.fin) { + strm->flags |= NGTCP2_STRM_FLAG_FIN_ACKED; + } + + prev_stream_offset = ngtcp2_strm_get_acked_offset(strm); + + rv = ngtcp2_strm_ack_data( + strm, frc->fr.stream.offset, + ngtcp2_vec_len(frc->fr.stream.data, frc->fr.stream.datacnt)); + if (rv != 0) { + return rv; + } + + if (conn->callbacks.acked_stream_data_offset) { + stream_offset = ngtcp2_strm_get_acked_offset(strm); + + datalen = stream_offset - prev_stream_offset; + if (datalen == 0 && !frc->fr.stream.fin) { + break; + } + + rv = conn->callbacks.acked_stream_data_offset( + conn, strm->stream_id, prev_stream_offset, datalen, conn->user_data, + strm->stream_user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + } + + rv = ngtcp2_conn_close_stream_if_shut_rdwr(conn, strm); + if (rv != 0) { + return rv; + } + + break; + case NGTCP2_FRAME_CRYPTO: + prev_stream_offset = ngtcp2_strm_get_acked_offset(crypto); + + rv = ngtcp2_strm_ack_data( + crypto, frc->fr.stream.offset, + ngtcp2_vec_len(frc->fr.stream.data, frc->fr.stream.datacnt)); + if (rv != 0) { + return rv; + } + + stream_offset = ngtcp2_strm_get_acked_offset(crypto); + + datalen = stream_offset - prev_stream_offset; + if (datalen == 0) { + break; + } + + conn_ack_crypto_data(conn, pktns, datalen); + + break; + case NGTCP2_FRAME_RESET_STREAM: + strm = ngtcp2_conn_find_stream(conn, frc->fr.reset_stream.stream_id); + if (strm == NULL) { + break; + } + + strm->flags |= NGTCP2_STRM_FLAG_RESET_STREAM_ACKED; + + rv = ngtcp2_conn_close_stream_if_shut_rdwr(conn, strm); + if (rv != 0) { + return rv; + } + + break; + case NGTCP2_FRAME_RETIRE_CONNECTION_ID: + ngtcp2_conn_untrack_retired_dcid_seq(conn, + frc->fr.retire_connection_id.seq); + break; + case NGTCP2_FRAME_NEW_CONNECTION_ID: + assert(conn->scid.num_in_flight); + + --conn->scid.num_in_flight; + + break; + case NGTCP2_FRAME_DATAGRAM: + case NGTCP2_FRAME_DATAGRAM_LEN: + if (!conn->callbacks.ack_datagram) { + break; + } + + rv = conn->callbacks.ack_datagram(conn, frc->fr.datagram.dgram_id, + conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + + break; + } + } + + return 0; +} + +static void rtb_on_pkt_acked(ngtcp2_rtb *rtb, ngtcp2_rtb_entry *ent, + ngtcp2_conn_stat *cstat, const ngtcp2_pktns *pktns, + ngtcp2_tstamp ts) { + ngtcp2_cc *cc = rtb->cc; + ngtcp2_cc_pkt pkt; + + ngtcp2_rst_update_rate_sample(rtb->rst, ent, ts); + + if (cc->on_pkt_acked) { + cc->on_pkt_acked(cc, cstat, + ngtcp2_cc_pkt_init(&pkt, ent->hd.pkt_num, ent->pktlen, + pktns->id, ent->ts, ent->rst.lost, + ent->rst.tx_in_flight, + ent->rst.is_app_limited), + ts); + } + + if (!(ent->flags & NGTCP2_RTB_ENTRY_FLAG_PROBE) && + (ent->flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING)) { + cstat->pto_count = 0; + } +} + +static void conn_verify_ecn(ngtcp2_conn *conn, ngtcp2_pktns *pktns, + ngtcp2_cc *cc, ngtcp2_conn_stat *cstat, + const ngtcp2_ack *fr, size_t ecn_acked, + ngtcp2_tstamp largest_pkt_sent_ts, + ngtcp2_tstamp ts) { + if (conn->tx.ecn.state == NGTCP2_ECN_STATE_FAILED) { + return; + } + + if ((ecn_acked && fr->type == NGTCP2_FRAME_ACK) || + (fr->type == NGTCP2_FRAME_ACK_ECN && + (pktns->rx.ecn.ack.ect0 > fr->ecn.ect0 || + pktns->rx.ecn.ack.ect1 > fr->ecn.ect1 || + pktns->rx.ecn.ack.ce > fr->ecn.ce || + (fr->ecn.ect0 - pktns->rx.ecn.ack.ect0) + + (fr->ecn.ce - pktns->rx.ecn.ack.ce) < + ecn_acked || + fr->ecn.ect0 > pktns->tx.ecn.ect0 || fr->ecn.ect1))) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, + "path is not ECN capable"); + conn->tx.ecn.state = NGTCP2_ECN_STATE_FAILED; + + return; + } + + if (conn->tx.ecn.state != NGTCP2_ECN_STATE_CAPABLE && ecn_acked) { + ngtcp2_log_info(&conn->log, NGTCP2_LOG_EVENT_CON, "path is ECN capable"); + conn->tx.ecn.state = NGTCP2_ECN_STATE_CAPABLE; + } + + if (fr->type == NGTCP2_FRAME_ACK_ECN) { + if (cc->congestion_event && largest_pkt_sent_ts != UINT64_MAX && + fr->ecn.ce > pktns->rx.ecn.ack.ce) { + cc->congestion_event(cc, cstat, largest_pkt_sent_ts, 0, ts); + } + + pktns->rx.ecn.ack.ect0 = fr->ecn.ect0; + pktns->rx.ecn.ack.ect1 = fr->ecn.ect1; + pktns->rx.ecn.ack.ce = fr->ecn.ce; + } +} + +static int rtb_detect_lost_pkt(ngtcp2_rtb *rtb, uint64_t *ppkt_lost, + ngtcp2_conn *conn, ngtcp2_pktns *pktns, + ngtcp2_conn_stat *cstat, ngtcp2_tstamp ts); + +ngtcp2_ssize ngtcp2_rtb_recv_ack(ngtcp2_rtb *rtb, const ngtcp2_ack *fr, + ngtcp2_conn_stat *cstat, ngtcp2_conn *conn, + ngtcp2_pktns *pktns, ngtcp2_tstamp pkt_ts, + ngtcp2_tstamp ts) { + ngtcp2_rtb_entry *ent; + int64_t largest_ack = fr->largest_ack, min_ack; + size_t i; + int rv; + ngtcp2_ksl_it it; + size_t num_acked = 0; + ngtcp2_tstamp largest_pkt_sent_ts = UINT64_MAX; + int64_t pkt_num; + ngtcp2_cc *cc = rtb->cc; + ngtcp2_rtb_entry *acked_ent = NULL; + int ack_eliciting_pkt_acked = 0; + size_t ecn_acked = 0; + int verify_ecn = 0; + ngtcp2_cc_ack cc_ack = {0}; + size_t num_lost_pkts = rtb->num_lost_pkts - rtb->num_lost_pmtud_pkts; + + cc_ack.prior_bytes_in_flight = cstat->bytes_in_flight; + cc_ack.rtt = UINT64_MAX; + + if (conn && (conn->flags & NGTCP2_CONN_FLAG_KEY_UPDATE_NOT_CONFIRMED) && + (conn->flags & NGTCP2_CONN_FLAG_KEY_UPDATE_INITIATOR) && + largest_ack >= conn->pktns.crypto.tx.ckm->pkt_num) { + conn->flags &= (uint32_t) ~(NGTCP2_CONN_FLAG_KEY_UPDATE_NOT_CONFIRMED | + NGTCP2_CONN_FLAG_KEY_UPDATE_INITIATOR); + conn->crypto.key_update.confirmed_ts = ts; + + ngtcp2_log_info(rtb->log, NGTCP2_LOG_EVENT_CRY, "key update confirmed"); + } + + if (rtb->largest_acked_tx_pkt_num < largest_ack) { + rtb->largest_acked_tx_pkt_num = largest_ack; + verify_ecn = 1; + } + + /* Assume that ngtcp2_pkt_validate_ack(fr) returns 0 */ + it = ngtcp2_ksl_lower_bound(&rtb->ents, &largest_ack); + if (ngtcp2_ksl_it_end(&it)) { + if (conn && verify_ecn) { + conn_verify_ecn(conn, pktns, rtb->cc, cstat, fr, ecn_acked, + largest_pkt_sent_ts, ts); + } + + return 0; + } + + min_ack = largest_ack - (int64_t)fr->first_ack_range; + + for (; !ngtcp2_ksl_it_end(&it);) { + pkt_num = *(int64_t *)ngtcp2_ksl_it_key(&it); + + assert(pkt_num <= largest_ack); + + if (pkt_num < min_ack) { + break; + } + + ent = ngtcp2_ksl_it_get(&it); + + if (largest_ack == pkt_num) { + largest_pkt_sent_ts = ent->ts; + } + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) { + ack_eliciting_pkt_acked = 1; + } + + rtb_remove(rtb, &it, &acked_ent, ent, cstat); + ++num_acked; + } + + for (i = 0; i < fr->rangecnt; ++i) { + largest_ack = min_ack - (int64_t)fr->ranges[i].gap - 2; + min_ack = largest_ack - (int64_t)fr->ranges[i].len; + + it = ngtcp2_ksl_lower_bound(&rtb->ents, &largest_ack); + if (ngtcp2_ksl_it_end(&it)) { + break; + } + + for (; !ngtcp2_ksl_it_end(&it);) { + pkt_num = *(int64_t *)ngtcp2_ksl_it_key(&it); + if (pkt_num < min_ack) { + break; + } + + ent = ngtcp2_ksl_it_get(&it); + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING) { + ack_eliciting_pkt_acked = 1; + } + + rtb_remove(rtb, &it, &acked_ent, ent, cstat); + ++num_acked; + } + } + + if (largest_pkt_sent_ts != UINT64_MAX && ack_eliciting_pkt_acked) { + cc_ack.rtt = pkt_ts - largest_pkt_sent_ts; + + rv = ngtcp2_conn_update_rtt(conn, cc_ack.rtt, fr->ack_delay_unscaled, ts); + if (rv == 0 && cc->new_rtt_sample) { + cc->new_rtt_sample(cc, cstat, ts); + } + } + + if (conn) { + for (ent = acked_ent; ent; ent = acked_ent) { + if (ent->hd.pkt_num >= pktns->tx.ecn.start_pkt_num && + (ent->flags & NGTCP2_RTB_ENTRY_FLAG_ECN)) { + ++ecn_acked; + } + + rv = process_acked_pkt(ent, conn, pktns); + if (rv != 0) { + goto fail; + } + + if (ent->hd.pkt_num >= rtb->cc_pkt_num) { + assert(cc_ack.pkt_delivered <= ent->rst.delivered); + + cc_ack.bytes_delivered += ent->pktlen; + cc_ack.pkt_delivered = ent->rst.delivered; + } + + rtb_on_pkt_acked(rtb, ent, cstat, pktns, ts); + acked_ent = ent->next; + ngtcp2_rtb_entry_objalloc_del(ent, rtb->rtb_entry_objalloc, + rtb->frc_objalloc, rtb->mem); + } + + if (verify_ecn) { + conn_verify_ecn(conn, pktns, rtb->cc, cstat, fr, ecn_acked, + largest_pkt_sent_ts, ts); + } + } else { + /* For unit tests */ + for (ent = acked_ent; ent; ent = acked_ent) { + rtb_on_pkt_acked(rtb, ent, cstat, pktns, ts); + acked_ent = ent->next; + ngtcp2_rtb_entry_objalloc_del(ent, rtb->rtb_entry_objalloc, + rtb->frc_objalloc, rtb->mem); + } + } + + if (rtb->cc->on_spurious_congestion && num_lost_pkts && + rtb->num_lost_pkts == rtb->num_lost_pmtud_pkts) { + rtb->cc->on_spurious_congestion(cc, cstat, ts); + } + + if (num_acked) { + ngtcp2_rst_on_ack_recv(rtb->rst, cstat); + + if (conn) { + rv = rtb_detect_lost_pkt(rtb, &cc_ack.bytes_lost, conn, pktns, cstat, ts); + if (rv != 0) { + return rv; + } + } + } + + rtb->rst->lost += cc_ack.bytes_lost; + + cc_ack.largest_pkt_sent_ts = largest_pkt_sent_ts; + if (num_acked && cc->on_ack_recv) { + cc->on_ack_recv(cc, cstat, &cc_ack, ts); + } + + return (ngtcp2_ssize)num_acked; + +fail: + for (ent = acked_ent; ent; ent = acked_ent) { + acked_ent = ent->next; + ngtcp2_rtb_entry_objalloc_del(ent, rtb->rtb_entry_objalloc, + rtb->frc_objalloc, rtb->mem); + } + + return rv; +} + +static int rtb_pkt_lost(ngtcp2_rtb *rtb, ngtcp2_conn_stat *cstat, + const ngtcp2_rtb_entry *ent, ngtcp2_duration loss_delay, + size_t pkt_thres, const ngtcp2_pktns *pktns, + ngtcp2_tstamp ts) { + ngtcp2_tstamp loss_time; + + if (ngtcp2_tstamp_elapsed(ent->ts, loss_delay, ts) || + rtb->largest_acked_tx_pkt_num >= ent->hd.pkt_num + (int64_t)pkt_thres) { + return 1; + } + + loss_time = cstat->loss_time[pktns->id]; + + if (loss_time == UINT64_MAX) { + loss_time = ent->ts + loss_delay; + } else { + loss_time = ngtcp2_min_uint64(loss_time, ent->ts + loss_delay); + } + + cstat->loss_time[pktns->id] = loss_time; + + return 0; +} + +/* + * compute_pkt_loss_delay computes loss delay. + */ +static ngtcp2_duration compute_pkt_loss_delay(const ngtcp2_conn_stat *cstat) { + /* 9/8 is kTimeThreshold */ + ngtcp2_duration loss_delay = + ngtcp2_max_uint64(cstat->latest_rtt, cstat->smoothed_rtt) * 9 / 8; + return ngtcp2_max_uint64(loss_delay, NGTCP2_GRANULARITY); +} + +/* + * conn_all_ecn_pkt_lost returns nonzero if all ECN QUIC packets are + * lost during validation period. + */ +static int conn_all_ecn_pkt_lost(ngtcp2_conn *conn) { + ngtcp2_pktns *in_pktns = conn->in_pktns; + ngtcp2_pktns *hs_pktns = conn->hs_pktns; + ngtcp2_pktns *pktns = &conn->pktns; + + return (!in_pktns || in_pktns->tx.ecn.validation_pkt_sent == + in_pktns->tx.ecn.validation_pkt_lost) && + (!hs_pktns || hs_pktns->tx.ecn.validation_pkt_sent == + hs_pktns->tx.ecn.validation_pkt_lost) && + pktns->tx.ecn.validation_pkt_sent == pktns->tx.ecn.validation_pkt_lost; +} + +static int rtb_detect_lost_pkt(ngtcp2_rtb *rtb, uint64_t *ppkt_lost, + ngtcp2_conn *conn, ngtcp2_pktns *pktns, + ngtcp2_conn_stat *cstat, ngtcp2_tstamp ts) { + ngtcp2_rtb_entry *ent; + ngtcp2_duration loss_delay; + ngtcp2_ksl_it it; + ngtcp2_tstamp latest_ts, oldest_ts; + int64_t last_lost_pkt_num; + ngtcp2_duration loss_window, congestion_period; + ngtcp2_cc *cc = rtb->cc; + int rv; + uint64_t pkt_thres = + rtb->cc_bytes_in_flight / cstat->max_tx_udp_payload_size / 2; + size_t ecn_pkt_lost = 0; + ngtcp2_tstamp start_ts; + ngtcp2_duration pto = ngtcp2_conn_compute_pto(conn, pktns); + uint64_t bytes_lost = 0; + ngtcp2_duration max_ack_delay; + + pkt_thres = ngtcp2_max_uint64(pkt_thres, NGTCP2_PKT_THRESHOLD); + pkt_thres = ngtcp2_min_uint64(pkt_thres, 256); + cstat->loss_time[pktns->id] = UINT64_MAX; + loss_delay = compute_pkt_loss_delay(cstat); + + it = ngtcp2_ksl_lower_bound(&rtb->ents, &rtb->largest_acked_tx_pkt_num); + for (; !ngtcp2_ksl_it_end(&it); ngtcp2_ksl_it_next(&it)) { + ent = ngtcp2_ksl_it_get(&it); + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED) { + break; + } + + if (rtb_pkt_lost(rtb, cstat, ent, loss_delay, (size_t)pkt_thres, pktns, + ts)) { + /* All entries from ent are considered to be lost. */ + latest_ts = oldest_ts = ent->ts; + /* +1 to pick this packet for persistent congestion in the + following loop. */ + last_lost_pkt_num = ent->hd.pkt_num + 1; + max_ack_delay = conn->remote.transport_params + ? conn->remote.transport_params->max_ack_delay + : 0; + + congestion_period = + (cstat->smoothed_rtt + + ngtcp2_max_uint64(4 * cstat->rttvar, NGTCP2_GRANULARITY) + + max_ack_delay) * + NGTCP2_PERSISTENT_CONGESTION_THRESHOLD; + + start_ts = ngtcp2_max_uint64(rtb->persistent_congestion_start_ts, + cstat->first_rtt_sample_ts); + + for (; !ngtcp2_ksl_it_end(&it); ngtcp2_ksl_it_next(&it)) { + ent = ngtcp2_ksl_it_get(&it); + + if (last_lost_pkt_num == ent->hd.pkt_num + 1 && ent->ts >= start_ts) { + last_lost_pkt_num = ent->hd.pkt_num; + oldest_ts = ent->ts; + } else { + last_lost_pkt_num = -1; + } + + if ((ent->flags & NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED)) { + if (pktns->id != NGTCP2_PKTNS_ID_APPLICATION || + last_lost_pkt_num == -1 || + latest_ts - oldest_ts >= congestion_period) { + break; + } + + continue; + } + + if (ent->hd.pkt_num >= pktns->tx.ecn.start_pkt_num && + (ent->flags & NGTCP2_RTB_ENTRY_FLAG_ECN)) { + ++ecn_pkt_lost; + } + + bytes_lost += rtb_on_remove(rtb, ent, cstat); + rv = rtb_on_pkt_lost(rtb, ent, cstat, conn, pktns, ts); + if (rv != 0) { + return rv; + } + } + + /* If only PMTUD packets are lost, do not trigger congestion + event. */ + if (bytes_lost == 0) { + break; + } + + switch (conn->tx.ecn.state) { + case NGTCP2_ECN_STATE_TESTING: + if (conn->tx.ecn.validation_start_ts == UINT64_MAX) { + break; + } + + if (ts - conn->tx.ecn.validation_start_ts < 3 * pto) { + pktns->tx.ecn.validation_pkt_lost += ecn_pkt_lost; + assert(pktns->tx.ecn.validation_pkt_sent >= + pktns->tx.ecn.validation_pkt_lost); + break; + } + + conn->tx.ecn.state = NGTCP2_ECN_STATE_UNKNOWN; + + /* fall through */ + case NGTCP2_ECN_STATE_UNKNOWN: + pktns->tx.ecn.validation_pkt_lost += ecn_pkt_lost; + assert(pktns->tx.ecn.validation_pkt_sent >= + pktns->tx.ecn.validation_pkt_lost); + if (conn_all_ecn_pkt_lost(conn)) { + conn->tx.ecn.state = NGTCP2_ECN_STATE_FAILED; + } + break; + default: + break; + } + + if (cc->congestion_event) { + cc->congestion_event(cc, cstat, latest_ts, bytes_lost, ts); + } + + loss_window = latest_ts - oldest_ts; + /* Persistent congestion situation is only evaluated for app + * packet number space and for the packets sent after handshake + * is confirmed. During handshake, there is not much packets + * sent and also people seem to do lots of effort not to trigger + * persistent congestion there, then it is a lot easier to just + * not enable it during handshake. + */ + if (pktns->id == NGTCP2_PKTNS_ID_APPLICATION && loss_window && + loss_window >= congestion_period) { + ngtcp2_log_info(rtb->log, NGTCP2_LOG_EVENT_LDC, + "persistent congestion loss_window=%" PRIu64 + " congestion_period=%" PRIu64, + loss_window, congestion_period); + + /* Reset min_rtt, srtt, and rttvar here. Next new RTT + sample will be used to recalculate these values. */ + cstat->min_rtt = UINT64_MAX; + cstat->smoothed_rtt = conn->local.settings.initial_rtt; + cstat->rttvar = conn->local.settings.initial_rtt / 2; + cstat->first_rtt_sample_ts = UINT64_MAX; + + if (cc->on_persistent_congestion) { + cc->on_persistent_congestion(cc, cstat, ts); + } + } + + break; + } + } + + ngtcp2_rtb_remove_excessive_lost_pkt(rtb, (size_t)pkt_thres); + + if (ppkt_lost) { + *ppkt_lost = bytes_lost; + } + + return 0; +} + +int ngtcp2_rtb_detect_lost_pkt(ngtcp2_rtb *rtb, ngtcp2_conn *conn, + ngtcp2_pktns *pktns, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts) { + return rtb_detect_lost_pkt(rtb, /* ppkt_lost = */ NULL, conn, pktns, cstat, + ts); +} + +void ngtcp2_rtb_remove_excessive_lost_pkt(ngtcp2_rtb *rtb, size_t n) { + ngtcp2_ksl_it it = ngtcp2_ksl_end(&rtb->ents); + ngtcp2_rtb_entry *ent; + int rv; + (void)rv; + + for (; rtb->num_lost_pkts > n;) { + assert(ngtcp2_ksl_it_end(&it)); + ngtcp2_ksl_it_prev(&it); + ent = ngtcp2_ksl_it_get(&it); + + assert(ent->flags & NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED); + + ngtcp2_log_info(rtb->log, NGTCP2_LOG_EVENT_LDC, + "removing stale lost pkn=%" PRId64, ent->hd.pkt_num); + + --rtb->num_lost_pkts; + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_PMTUD_PROBE) { + --rtb->num_lost_pmtud_pkts; + } + + rv = ngtcp2_ksl_remove_hint(&rtb->ents, &it, &it, &ent->hd.pkt_num); + assert(0 == rv); + ngtcp2_rtb_entry_objalloc_del(ent, rtb->rtb_entry_objalloc, + rtb->frc_objalloc, rtb->mem); + } +} + +void ngtcp2_rtb_remove_expired_lost_pkt(ngtcp2_rtb *rtb, ngtcp2_duration pto, + ngtcp2_tstamp ts) { + ngtcp2_ksl_it it; + ngtcp2_rtb_entry *ent; + int rv; + (void)rv; + + if (ngtcp2_ksl_len(&rtb->ents) == 0) { + return; + } + + it = ngtcp2_ksl_end(&rtb->ents); + + for (;;) { + assert(ngtcp2_ksl_it_end(&it)); + + ngtcp2_ksl_it_prev(&it); + ent = ngtcp2_ksl_it_get(&it); + + if (!(ent->flags & NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED) || + ts - ent->lost_ts < pto) { + return; + } + + ngtcp2_log_info(rtb->log, NGTCP2_LOG_EVENT_LDC, + "removing stale lost pkn=%" PRId64, ent->hd.pkt_num); + + --rtb->num_lost_pkts; + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_PMTUD_PROBE) { + --rtb->num_lost_pmtud_pkts; + } + + rv = ngtcp2_ksl_remove_hint(&rtb->ents, &it, &it, &ent->hd.pkt_num); + assert(0 == rv); + ngtcp2_rtb_entry_objalloc_del(ent, rtb->rtb_entry_objalloc, + rtb->frc_objalloc, rtb->mem); + + if (ngtcp2_ksl_len(&rtb->ents) == 0) { + return; + } + } +} + +ngtcp2_tstamp ngtcp2_rtb_lost_pkt_ts(const ngtcp2_rtb *rtb) { + ngtcp2_ksl_it it; + ngtcp2_rtb_entry *ent; + + if (ngtcp2_ksl_len(&rtb->ents) == 0) { + return UINT64_MAX; + } + + it = ngtcp2_ksl_end(&rtb->ents); + ngtcp2_ksl_it_prev(&it); + ent = ngtcp2_ksl_it_get(&it); + + if (!(ent->flags & NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED)) { + return UINT64_MAX; + } + + return ent->lost_ts; +} + +static int rtb_on_pkt_lost_resched_move(ngtcp2_rtb *rtb, ngtcp2_conn *conn, + ngtcp2_pktns *pktns, + ngtcp2_rtb_entry *ent) { + ngtcp2_frame_chain **pfrc, *frc; + ngtcp2_stream *sfr; + ngtcp2_strm *strm; + int rv; + + ngtcp2_log_pkt_lost(rtb->log, ent->hd.pkt_num, ent->hd.type, ent->hd.flags, + ent->ts); + + if (rtb->qlog) { + ngtcp2_qlog_pkt_lost(rtb->qlog, ent); + } + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_PROBE) { + ngtcp2_log_info(rtb->log, NGTCP2_LOG_EVENT_LDC, + "pkn=%" PRId64 + " is a probe packet, no retransmission is necessary", + ent->hd.pkt_num); + return 0; + } + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_PMTUD_PROBE) { + ngtcp2_log_info(rtb->log, NGTCP2_LOG_EVENT_LDC, + "pkn=%" PRId64 + " is a PMTUD probe packet, no retransmission is necessary", + ent->hd.pkt_num); + return 0; + } + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED) { + --rtb->num_lost_pkts; + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_PMTUD_PROBE) { + --rtb->num_lost_pmtud_pkts; + } + + ngtcp2_log_info(rtb->log, NGTCP2_LOG_EVENT_LDC, + "pkn=%" PRId64 + " was declared lost and has already been retransmitted", + ent->hd.pkt_num); + return 0; + } + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_PTO_RECLAIMED) { + ngtcp2_log_info(rtb->log, NGTCP2_LOG_EVENT_LDC, + "pkn=%" PRId64 " has already been reclaimed on PTO", + ent->hd.pkt_num); + return 0; + } + + if (!(ent->flags & NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE) && + (!(ent->flags & NGTCP2_RTB_ENTRY_FLAG_DATAGRAM) || + !conn->callbacks.lost_datagram)) { + /* PADDING only (or PADDING + ACK ) packets will have NULL + ent->frc. */ + return 0; + } + + pfrc = &ent->frc; + + for (; *pfrc;) { + switch ((*pfrc)->fr.type) { + case NGTCP2_FRAME_STREAM: + frc = *pfrc; + + *pfrc = frc->next; + frc->next = NULL; + sfr = &frc->fr.stream; + + strm = ngtcp2_conn_find_stream(conn, sfr->stream_id); + if (!strm) { + ngtcp2_frame_chain_objalloc_del(frc, rtb->frc_objalloc, rtb->mem); + break; + } + + rv = ngtcp2_strm_streamfrq_push(strm, frc); + if (rv != 0) { + ngtcp2_frame_chain_objalloc_del(frc, rtb->frc_objalloc, rtb->mem); + return rv; + } + + if (!ngtcp2_strm_is_tx_queued(strm)) { + strm->cycle = ngtcp2_conn_tx_strmq_first_cycle(conn); + rv = ngtcp2_conn_tx_strmq_push(conn, strm); + if (rv != 0) { + return rv; + } + } + + break; + case NGTCP2_FRAME_CRYPTO: + frc = *pfrc; + + *pfrc = frc->next; + frc->next = NULL; + + rv = ngtcp2_strm_streamfrq_push(&pktns->crypto.strm, frc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + ngtcp2_frame_chain_objalloc_del(frc, rtb->frc_objalloc, rtb->mem); + return rv; + } + + break; + case NGTCP2_FRAME_DATAGRAM: + case NGTCP2_FRAME_DATAGRAM_LEN: + frc = *pfrc; + + if (conn->callbacks.lost_datagram) { + rv = conn->callbacks.lost_datagram(conn, frc->fr.datagram.dgram_id, + conn->user_data); + if (rv != 0) { + return NGTCP2_ERR_CALLBACK_FAILURE; + } + } + + *pfrc = (*pfrc)->next; + + ngtcp2_frame_chain_objalloc_del(frc, rtb->frc_objalloc, rtb->mem); + + break; + default: + pfrc = &(*pfrc)->next; + } + } + + *pfrc = pktns->tx.frq; + pktns->tx.frq = ent->frc; + ent->frc = NULL; + + return 0; +} + +int ngtcp2_rtb_remove_all(ngtcp2_rtb *rtb, ngtcp2_conn *conn, + ngtcp2_pktns *pktns, ngtcp2_conn_stat *cstat) { + ngtcp2_rtb_entry *ent; + ngtcp2_ksl_it it; + int rv; + + it = ngtcp2_ksl_begin(&rtb->ents); + + for (; !ngtcp2_ksl_it_end(&it);) { + ent = ngtcp2_ksl_it_get(&it); + + rtb_on_remove(rtb, ent, cstat); + rv = ngtcp2_ksl_remove_hint(&rtb->ents, &it, &it, &ent->hd.pkt_num); + assert(0 == rv); + + rv = rtb_on_pkt_lost_resched_move(rtb, conn, pktns, ent); + + ngtcp2_rtb_entry_objalloc_del(ent, rtb->rtb_entry_objalloc, + rtb->frc_objalloc, rtb->mem); + + if (rv != 0) { + return rv; + } + } + + return 0; +} + +void ngtcp2_rtb_remove_early_data(ngtcp2_rtb *rtb, ngtcp2_conn_stat *cstat) { + ngtcp2_rtb_entry *ent; + ngtcp2_ksl_it it; + int rv; + (void)rv; + + it = ngtcp2_ksl_begin(&rtb->ents); + + for (; !ngtcp2_ksl_it_end(&it);) { + ent = ngtcp2_ksl_it_get(&it); + + if (ent->hd.type != NGTCP2_PKT_0RTT) { + ngtcp2_ksl_it_next(&it); + continue; + } + + rtb_on_remove(rtb, ent, cstat); + rv = ngtcp2_ksl_remove_hint(&rtb->ents, &it, &it, &ent->hd.pkt_num); + assert(0 == rv); + + ngtcp2_rtb_entry_objalloc_del(ent, rtb->rtb_entry_objalloc, + rtb->frc_objalloc, rtb->mem); + } +} + +int ngtcp2_rtb_empty(const ngtcp2_rtb *rtb) { + return ngtcp2_ksl_len(&rtb->ents) == 0; +} + +void ngtcp2_rtb_reset_cc_state(ngtcp2_rtb *rtb, int64_t cc_pkt_num) { + rtb->cc_pkt_num = cc_pkt_num; + rtb->cc_bytes_in_flight = 0; +} + +ngtcp2_ssize ngtcp2_rtb_reclaim_on_pto(ngtcp2_rtb *rtb, ngtcp2_conn *conn, + ngtcp2_pktns *pktns, size_t num_pkts) { + ngtcp2_ksl_it it; + ngtcp2_rtb_entry *ent; + ngtcp2_ssize reclaimed; + size_t atmost = num_pkts; + + it = ngtcp2_ksl_end(&rtb->ents); + for (; !ngtcp2_ksl_it_begin(&it) && num_pkts;) { + ngtcp2_ksl_it_prev(&it); + ent = ngtcp2_ksl_it_get(&it); + + if ((ent->flags & (NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED | + NGTCP2_RTB_ENTRY_FLAG_PTO_RECLAIMED)) || + !(ent->flags & NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE)) { + continue; + } + + assert(ent->frc); + + reclaimed = + rtb_reclaim_frame(rtb, NGTCP2_RECLAIM_FLAG_NONE, conn, pktns, ent); + if (reclaimed < 0) { + return reclaimed; + } + + /* Mark ent reclaimed even if reclaimed == 0 so that we can skip + it in the next run. */ + ent->flags |= NGTCP2_RTB_ENTRY_FLAG_PTO_RECLAIMED; + + assert(rtb->num_retransmittable); + --rtb->num_retransmittable; + + if (ent->flags & NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING) { + ent->flags &= (uint16_t)~NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING; + assert(rtb->num_pto_eliciting); + --rtb->num_pto_eliciting; + } + + if (reclaimed) { + --num_pkts; + } + } + + return (ngtcp2_ssize)(atmost - num_pkts); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_rtb.h b/contrib/libs/ngtcp2/lib/ngtcp2_rtb.h new file mode 100644 index 0000000000..768f4abc42 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_rtb.h @@ -0,0 +1,320 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_RTB_H +#define NGTCP2_RTB_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_pkt.h" +#include "ngtcp2_ksl.h" +#include "ngtcp2_pq.h" +#include "ngtcp2_objalloc.h" +#include "ngtcp2_pktns_id.h" + +typedef struct ngtcp2_conn ngtcp2_conn; +typedef struct ngtcp2_pktns ngtcp2_pktns; +typedef struct ngtcp2_log ngtcp2_log; +typedef struct ngtcp2_qlog ngtcp2_qlog; +typedef struct ngtcp2_strm ngtcp2_strm; +typedef struct ngtcp2_rst ngtcp2_rst; +typedef struct ngtcp2_cc ngtcp2_cc; +typedef struct ngtcp2_conn_stat ngtcp2_conn_stat; +typedef struct ngtcp2_frame_chain ngtcp2_frame_chain; + +/* NGTCP2_RTB_ENTRY_FLAG_NONE indicates that no flag is set. */ +#define NGTCP2_RTB_ENTRY_FLAG_NONE 0x00u +/* NGTCP2_RTB_ENTRY_FLAG_PROBE indicates that the entry includes a + probe packet. */ +#define NGTCP2_RTB_ENTRY_FLAG_PROBE 0x01u +/* NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE indicates that the entry + includes a frame which must be retransmitted until it is + acknowledged. In most cases, this flag is used along with + NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING and + NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING. */ +#define NGTCP2_RTB_ENTRY_FLAG_RETRANSMITTABLE 0x02u +/* NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING indicates that the entry + elicits acknowledgement. */ +#define NGTCP2_RTB_ENTRY_FLAG_ACK_ELICITING 0x04u +/* NGTCP2_RTB_ENTRY_FLAG_PTO_RECLAIMED indicates that the packet has + been reclaimed on PTO. It is not marked lost yet and still + consumes congestion window. */ +#define NGTCP2_RTB_ENTRY_FLAG_PTO_RECLAIMED 0x08u +/* NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED indicates that the entry + has been marked lost and, optionally, scheduled to retransmit. */ +#define NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED 0x10u +/* NGTCP2_RTB_ENTRY_FLAG_ECN indicates that the entry is included in a + UDP datagram with ECN marking. */ +#define NGTCP2_RTB_ENTRY_FLAG_ECN 0x20u +/* NGTCP2_RTB_ENTRY_FLAG_DATAGRAM indicates that the entry includes + DATAGRAM frame. */ +#define NGTCP2_RTB_ENTRY_FLAG_DATAGRAM 0x40u +/* NGTCP2_RTB_ENTRY_FLAG_PMTUD_PROBE indicates that the entry includes + a PMTUD probe packet. */ +#define NGTCP2_RTB_ENTRY_FLAG_PMTUD_PROBE 0x80u +/* NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING indicates that the entry + includes a packet which elicits PTO probe packets. */ +#define NGTCP2_RTB_ENTRY_FLAG_PTO_ELICITING 0x100u + +typedef struct ngtcp2_rtb_entry ngtcp2_rtb_entry; + +/* + * ngtcp2_rtb_entry is an object stored in ngtcp2_rtb. It corresponds + * to the one packet which is waiting for its acknowledgement. + */ +struct ngtcp2_rtb_entry { + union { + struct { + ngtcp2_rtb_entry *next; + + struct { + int64_t pkt_num; + uint8_t type; + uint8_t flags; + } hd; + ngtcp2_frame_chain *frc; + /* ts is the time point when a packet included in this entry is + sent to a remote endpoint. */ + ngtcp2_tstamp ts; + /* lost_ts is the time when this entry is declared to be + lost. */ + ngtcp2_tstamp lost_ts; + /* pktlen is the length of QUIC packet */ + size_t pktlen; + struct { + uint64_t delivered; + ngtcp2_tstamp delivered_ts; + ngtcp2_tstamp first_sent_ts; + uint64_t tx_in_flight; + uint64_t lost; + int64_t end_seq; + int is_app_limited; + } rst; + /* flags is bitwise-OR of zero or more of + NGTCP2_RTB_ENTRY_FLAG_*. */ + uint16_t flags; + }; + + ngtcp2_opl_entry oplent; + }; +}; + +ngtcp2_objalloc_decl(rtb_entry, ngtcp2_rtb_entry, oplent); + +/* + * ngtcp2_rtb_entry_objalloc_new allocates ngtcp2_rtb_entry object via + * |objalloc|, and assigns its pointer to |*pent|. + */ +int ngtcp2_rtb_entry_objalloc_new(ngtcp2_rtb_entry **pent, + const ngtcp2_pkt_hd *hd, + ngtcp2_frame_chain *frc, ngtcp2_tstamp ts, + size_t pktlen, uint16_t flags, + ngtcp2_objalloc *objalloc); + +/* + * ngtcp2_rtb_entry_objalloc_del adds |ent| to |objalloc| for reuse. + * ngtcp2_frame_chain linked from ent->frc are also added to + * |frc_objalloc| depending on their frame type and size. + */ +void ngtcp2_rtb_entry_objalloc_del(ngtcp2_rtb_entry *ent, + ngtcp2_objalloc *objalloc, + ngtcp2_objalloc *frc_objalloc, + const ngtcp2_mem *mem); + +/* + * ngtcp2_rtb tracks sent packets, and its acknowledgement timeout for + * retransmission. + */ +typedef struct ngtcp2_rtb { + ngtcp2_objalloc *frc_objalloc; + ngtcp2_objalloc *rtb_entry_objalloc; + /* ents includes ngtcp2_rtb_entry sorted by decreasing order of + packet number. */ + ngtcp2_ksl ents; + ngtcp2_rst *rst; + ngtcp2_cc *cc; + ngtcp2_log *log; + ngtcp2_qlog *qlog; + const ngtcp2_mem *mem; + /* largest_acked_tx_pkt_num is the largest packet number + acknowledged by a remote endpoint. */ + int64_t largest_acked_tx_pkt_num; + /* num_ack_eliciting is the number of ACK eliciting entries in + ents. */ + size_t num_ack_eliciting; + /* num_retransmittable is the number of packets which contain frames + that must be retransmitted on loss in ents. */ + size_t num_retransmittable; + /* num_pto_eliciting is the number of packets that elicit PTO probe + packets in ents. */ + size_t num_pto_eliciting; + /* probe_pkt_left is the number of probe packet to send */ + size_t probe_pkt_left; + /* cc_pkt_num is the smallest packet number that is contributed to + ngtcp2_conn_stat.bytes_in_flight. */ + int64_t cc_pkt_num; + /* cc_bytes_in_flight is the number of in-flight bytes that is + contributed to ngtcp2_conn_stat.bytes_in_flight. It only + includes the bytes after congestion state is reset, that is only + count a packet whose packet number is greater than or equals to + cc_pkt_num. */ + uint64_t cc_bytes_in_flight; + /* persistent_congestion_start_ts is the time when persistent + congestion evaluation is started. It happens roughly after + handshake is confirmed. */ + ngtcp2_tstamp persistent_congestion_start_ts; + /* num_lost_pkts is the number entries in ents which has + NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED flag set. */ + size_t num_lost_pkts; + /* num_lost_pmtud_pkts is the number of entries in ents which have + both NGTCP2_RTB_ENTRY_FLAG_LOST_RETRANSMITTED and + NGTCP2_RTB_ENTRY_FLAG_PMTUD_PROBE flags set. */ + size_t num_lost_pmtud_pkts; +} ngtcp2_rtb; + +/* + * ngtcp2_rtb_init initializes |rtb|. + */ +void ngtcp2_rtb_init(ngtcp2_rtb *rtb, ngtcp2_rst *rst, ngtcp2_cc *cc, + int64_t cc_pkt_num, ngtcp2_log *log, ngtcp2_qlog *qlog, + ngtcp2_objalloc *rtb_entry_objalloc, + ngtcp2_objalloc *frc_objalloc, const ngtcp2_mem *mem); + +/* + * ngtcp2_rtb_free deallocates resources allocated for |rtb|. + */ +void ngtcp2_rtb_free(ngtcp2_rtb *rtb); + +/* + * ngtcp2_rtb_add adds |ent| to |rtb|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + */ +int ngtcp2_rtb_add(ngtcp2_rtb *rtb, ngtcp2_rtb_entry *ent, + ngtcp2_conn_stat *cstat); + +/* + * ngtcp2_rtb_head returns the iterator which points to the entry + * which has the largest packet number. If there is no entry, + * returned value satisfies ngtcp2_ksl_it_end(&it) != 0. + */ +ngtcp2_ksl_it ngtcp2_rtb_head(const ngtcp2_rtb *rtb); + +/* + * ngtcp2_rtb_recv_ack removes an acknowledged ngtcp2_rtb_entry from + * |rtb|. |pkt_num| is a packet number which includes |fr|. |pkt_ts| + * is the timestamp when packet is received. |ts| should be the + * current time. Usually they are the same, but for buffered packets, + * |pkt_ts| would be earlier than |ts|. + * + * This function returns the number of newly acknowledged packets if + * it succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_CALLBACK_FAILURE + * User callback failed + * NGTCP2_ERR_NOMEM + * Out of memory + */ +ngtcp2_ssize ngtcp2_rtb_recv_ack(ngtcp2_rtb *rtb, const ngtcp2_ack *fr, + ngtcp2_conn_stat *cstat, ngtcp2_conn *conn, + ngtcp2_pktns *pktns, ngtcp2_tstamp pkt_ts, + ngtcp2_tstamp ts); + +/* + * ngtcp2_rtb_detect_lost_pkt detects lost packets and prepends the + * frames contained them to |*pfrc|. Even when this function fails, + * some frames might be prepended to |*pfrc|, and the caller should + * handle them. + */ +int ngtcp2_rtb_detect_lost_pkt(ngtcp2_rtb *rtb, ngtcp2_conn *conn, + ngtcp2_pktns *pktns, ngtcp2_conn_stat *cstat, + ngtcp2_tstamp ts); + +/* + * ngtcp2_rtb_remove_expired_lost_pkt removes expired lost packet. + */ +void ngtcp2_rtb_remove_expired_lost_pkt(ngtcp2_rtb *rtb, ngtcp2_duration pto, + ngtcp2_tstamp ts); + +/* + * ngtcp2_rtb_lost_pkt_ts returns the timestamp when an oldest lost + * packet tracked by |rtb| was declared lost. It returns UINT64_MAX + * if no such packet exists. + */ +ngtcp2_tstamp ngtcp2_rtb_lost_pkt_ts(const ngtcp2_rtb *rtb); + +/* + * ngtcp2_rtb_remove_all removes all packets from |rtb|, and prepends + * all frames to |*pfrc|. Even when this function fails, some frames + * might be prepended to |*pfrc|, and the caller should handle them. + */ +int ngtcp2_rtb_remove_all(ngtcp2_rtb *rtb, ngtcp2_conn *conn, + ngtcp2_pktns *pktns, ngtcp2_conn_stat *cstat); + +/* + * ngtcp2_rtb_remove_early_data removes all entries for 0RTT packets. + */ +void ngtcp2_rtb_remove_early_data(ngtcp2_rtb *rtb, ngtcp2_conn_stat *cstat); + +/* + * ngtcp2_rtb_empty returns nonzero if |rtb| has no entry. + */ +int ngtcp2_rtb_empty(const ngtcp2_rtb *rtb); + +/* + * ngtcp2_rtb_reset_cc_state resets congestion state in |rtb|. + * |cc_pkt_num| is the next outbound packet number which is sent under + * new congestion state. + */ +void ngtcp2_rtb_reset_cc_state(ngtcp2_rtb *rtb, int64_t cc_pkt_num); + +/* + * ngtcp2_rtb_remove_excessive_lost_pkt ensures that the number of + * lost packets is at most |n|. + */ +void ngtcp2_rtb_remove_excessive_lost_pkt(ngtcp2_rtb *rtb, size_t n); + +/* + * ngtcp2_rtb_reclaim_on_pto reclaims up to |num_pkts| packets which + * are in-flight and not marked lost. The reclaimed frames may be + * sent in a PTO probe packet. + * + * This function returns the number of packets reclaimed if it + * succeeds, or one of the following negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + */ +ngtcp2_ssize ngtcp2_rtb_reclaim_on_pto(ngtcp2_rtb *rtb, ngtcp2_conn *conn, + ngtcp2_pktns *pktns, size_t num_pkts); + +#endif /* !defined(NGTCP2_RTB_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_settings.c b/contrib/libs/ngtcp2/lib/ngtcp2_settings.c new file mode 100644 index 0000000000..77a68bd112 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_settings.c @@ -0,0 +1,91 @@ +/* + * ngtcp2 + * + * Copyright (c) 2024 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_settings.h" + +#include <string.h> +#include <assert.h> + +#include "ngtcp2_unreachable.h" + +void ngtcp2_settings_default_versioned(int settings_version, + ngtcp2_settings *settings) { + size_t len = ngtcp2_settingslen_version(settings_version); + + memset(settings, 0, len); + + switch (settings_version) { + case NGTCP2_SETTINGS_VERSION: + case NGTCP2_SETTINGS_V1: + settings->cc_algo = NGTCP2_CC_ALGO_CUBIC; + settings->initial_rtt = NGTCP2_DEFAULT_INITIAL_RTT; + settings->ack_thresh = 2; + settings->max_tx_udp_payload_size = 1500 - 48; + settings->handshake_timeout = UINT64_MAX; + + break; + } +} + +static void settings_copy(ngtcp2_settings *dest, const ngtcp2_settings *src, + int settings_version) { + assert(settings_version != NGTCP2_SETTINGS_VERSION); + + memcpy(dest, src, ngtcp2_settingslen_version(settings_version)); +} + +const ngtcp2_settings * +ngtcp2_settings_convert_to_latest(ngtcp2_settings *dest, int settings_version, + const ngtcp2_settings *src) { + if (settings_version == NGTCP2_SETTINGS_VERSION) { + return src; + } + + ngtcp2_settings_default(dest); + + settings_copy(dest, src, settings_version); + + return dest; +} + +void ngtcp2_settings_convert_to_old(int settings_version, ngtcp2_settings *dest, + const ngtcp2_settings *src) { + assert(settings_version != NGTCP2_SETTINGS_VERSION); + + settings_copy(dest, src, settings_version); +} + +size_t ngtcp2_settingslen_version(int settings_version) { + ngtcp2_settings settings; + + switch (settings_version) { + case NGTCP2_SETTINGS_VERSION: + return sizeof(settings); + case NGTCP2_SETTINGS_V1: + return offsetof(ngtcp2_settings, initial_pkt_num) + + sizeof(settings.initial_pkt_num); + default: + ngtcp2_unreachable(); + } +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_settings.h b/contrib/libs/ngtcp2/lib/ngtcp2_settings.h new file mode 100644 index 0000000000..80466d43e4 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_settings.h @@ -0,0 +1,73 @@ +/* + * ngtcp2 + * + * Copyright (c) 2024 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_SETTINGS_H +#define NGTCP2_SETTINGS_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +/* + * ngtcp2_settings_convert_to_latest converts |src| of version + * |settings_version| to the latest version NGTCP2_SETTINGS_VERSION. + * + * |dest| must point to the latest version. |src| may be the older + * version, and if so, it may have fewer fields. Accessing those + * fields causes undefined behavior. + * + * If |settings_version| == NGTCP2_SETTINGS_VERSION, no conversion is + * made, and |src| is returned. Otherwise, first |dest| is + * initialized via ngtcp2_settings_default, and then all valid fields + * in |src| are copied into |dest|. Finally, |dest| is returned. + */ +const ngtcp2_settings * +ngtcp2_settings_convert_to_latest(ngtcp2_settings *dest, int settings_version, + const ngtcp2_settings *src); + +/* + * ngtcp2_settings_convert_to_old converts |src| of the latest version + * to |dest| of version |settings_version|. + * + * |settings_version| must not be the latest version + * NGTCP2_SETTINGS_VERSION. + * + * |dest| points to the older version, and it may have fewer fields. + * Accessing those fields causes undefined behavior. + * + * This function copies all valid fields in version |settings_version| + * from |src| to |dest|. + */ +void ngtcp2_settings_convert_to_old(int settings_version, ngtcp2_settings *dest, + const ngtcp2_settings *src); + +/* + * ngtcp2_settingslen_version returns the effective length of + * ngtcp2_settings at the version |settings_version|. + */ +size_t ngtcp2_settingslen_version(int settings_version); + +#endif /* !defined(NGTCP2_SETTINGS_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_str.c b/contrib/libs/ngtcp2/lib/ngtcp2_str.c new file mode 100644 index 0000000000..a61636d188 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_str.c @@ -0,0 +1,233 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_str.h" + +#include <string.h> + +#include "ngtcp2_macro.h" + +void *ngtcp2_cpymem(void *dest, const void *src, size_t n) { + memcpy(dest, src, n); + return (uint8_t *)dest + n; +} + +uint8_t *ngtcp2_setmem(uint8_t *dest, uint8_t b, size_t n) { + memset(dest, b, n); + return dest + n; +} + +const void *ngtcp2_get_bytes(void *dest, const void *src, size_t n) { + memcpy(dest, src, n); + return (uint8_t *)src + n; +} + +#define LOWER_XDIGITS "0123456789abcdef" + +uint8_t *ngtcp2_encode_hex(uint8_t *dest, const uint8_t *data, size_t len) { + size_t i; + uint8_t *p = dest; + + for (i = 0; i < len; ++i) { + *p++ = (uint8_t)LOWER_XDIGITS[data[i] >> 4]; + *p++ = (uint8_t)LOWER_XDIGITS[data[i] & 0xf]; + } + + *p = '\0'; + + return dest; +} + +char *ngtcp2_encode_printable_ascii(char *dest, const uint8_t *data, + size_t len) { + size_t i; + char *p = dest; + uint8_t c; + + for (i = 0; i < len; ++i) { + c = data[i]; + if (0x20 <= c && c <= 0x7e) { + *p++ = (char)c; + } else { + *p++ = '.'; + } + } + + *p = '\0'; + + return dest; +} + +/* + * write_uint writes |n| to the buffer pointed by |p| in decimal + * representation. It returns |p| plus the number of bytes written. + * The function assumes that the buffer has enough capacity to contain + * a string. + */ +static uint8_t *write_uint(uint8_t *p, uint64_t n) { + size_t nlen = 0; + uint64_t t; + uint8_t *res; + + if (n == 0) { + *p++ = '0'; + return p; + } + for (t = n; t; t /= 10, ++nlen) + ; + p += nlen; + res = p; + for (; n; n /= 10) { + *--p = (uint8_t)((n % 10) + '0'); + } + return res; +} + +uint8_t *ngtcp2_encode_ipv4(uint8_t *dest, const uint8_t *addr) { + size_t i; + uint8_t *p = dest; + + p = write_uint(p, addr[0]); + + for (i = 1; i < 4; ++i) { + *p++ = '.'; + p = write_uint(p, addr[i]); + } + + *p = '\0'; + + return dest; +} + +/* + * write_hex_zsup writes the content of buffer pointed by |data| of + * length |len| to |dest| in hex string. Any leading zeros are + * suppressed. It returns |dest| plus the number of bytes written. + */ +static uint8_t *write_hex_zsup(uint8_t *dest, const uint8_t *data, size_t len) { + size_t i; + uint8_t *p = dest; + uint8_t d; + + for (i = 0; i < len; ++i) { + d = data[i]; + if (d >> 4) { + break; + } + + d &= 0xf; + + if (d) { + *p++ = (uint8_t)LOWER_XDIGITS[d]; + ++i; + break; + } + } + + if (p == dest && i == len) { + *p++ = '0'; + return p; + } + + for (; i < len; ++i) { + d = data[i]; + *p++ = (uint8_t)LOWER_XDIGITS[d >> 4]; + *p++ = (uint8_t)LOWER_XDIGITS[d & 0xf]; + } + + return p; +} + +uint8_t *ngtcp2_encode_ipv6(uint8_t *dest, const uint8_t *addr) { + uint16_t blks[8]; + size_t i; + size_t zlen, zoff; + size_t max_zlen = 0, max_zoff = 8; + uint8_t *p = dest; + + for (i = 0; i < 16; i += sizeof(uint16_t)) { + /* Copy in network byte order. */ + memcpy(&blks[i / sizeof(uint16_t)], addr + i, sizeof(uint16_t)); + } + + for (i = 0; i < 8;) { + if (blks[i]) { + ++i; + continue; + } + + zlen = 1; + zoff = i; + + ++i; + for (; i < 8 && blks[i] == 0; ++i, ++zlen) + ; + if (zlen > max_zlen) { + max_zlen = zlen; + max_zoff = zoff; + } + } + + /* Do not suppress a single '0' block */ + if (max_zlen == 1) { + max_zoff = 8; + } + + if (max_zoff != 0) { + p = write_hex_zsup(p, (const uint8_t *)blks, sizeof(uint16_t)); + + for (i = 1; i < max_zoff; ++i) { + *p++ = ':'; + p = write_hex_zsup(p, (const uint8_t *)(blks + i), sizeof(uint16_t)); + } + } + + if (max_zoff != 8) { + *p++ = ':'; + + if (max_zoff + max_zlen == 8) { + *p++ = ':'; + } else { + for (i = max_zoff + max_zlen; i < 8; ++i) { + *p++ = ':'; + p = write_hex_zsup(p, (const uint8_t *)(blks + i), sizeof(uint16_t)); + } + } + } + + *p = '\0'; + + return dest; +} + +int ngtcp2_cmemeq(const uint8_t *a, const uint8_t *b, size_t n) { + size_t i; + int rv = 0; + + for (i = 0; i < n; ++i) { + rv |= a[i] ^ b[i]; + } + + return rv == 0; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_str.h b/contrib/libs/ngtcp2/lib/ngtcp2_str.h new file mode 100644 index 0000000000..f970c153e8 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_str.h @@ -0,0 +1,94 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_STR_H +#define NGTCP2_STR_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +void *ngtcp2_cpymem(void *dest, const void *src, size_t n); + +/* + * ngtcp2_setmem writes a string of length |n| consisting only |b| to + * the buffer pointed by |dest|. It returns dest + n; + */ +uint8_t *ngtcp2_setmem(uint8_t *dest, uint8_t b, size_t n); + +/* + * ngtcp2_get_bytes copies |n| bytes from |src| to |dest|, and returns + * |src| + |n|. + */ +const void *ngtcp2_get_bytes(void *dest, const void *src, size_t n); + +/* + * ngtcp2_encode_hex encodes |data| of length |len| in hex string. It + * writes additional NULL bytes at the end of the buffer. The buffer + * pointed by |dest| must have at least |len| * 2 + 1 bytes space. + * This function returns |dest|. + */ +uint8_t *ngtcp2_encode_hex(uint8_t *dest, const uint8_t *data, size_t len); + +/* + * ngtcp2_encode_ipv4 encodes binary form IPv4 address stored in + * |addr| to human readable text form in the buffer pointed by |dest|. + * The capacity of buffer must have enough length to store a text form + * plus a terminating NULL byte. The resulting text form ends with + * NULL byte. The function returns |dest|. + */ +uint8_t *ngtcp2_encode_ipv4(uint8_t *dest, const uint8_t *addr); + +/* + * ngtcp2_encode_ipv6 encodes binary form IPv6 address stored in + * |addr| to human readable text form in the buffer pointed by |dest|. + * The capacity of buffer must have enough length to store a text form + * plus a terminating NULL byte. The resulting text form ends with + * NULL byte. The function produces the canonical form of IPv6 text + * representation described in + * https://tools.ietf.org/html/rfc5952#section-4. The function + * returns |dest|. + */ +uint8_t *ngtcp2_encode_ipv6(uint8_t *dest, const uint8_t *addr); + +/* + * ngtcp2_encode_printable_ascii encodes |data| of length |len| in + * |dest| in the following manner: printable ascii characters are + * copied as is. The other characters are converted to ".". It + * writes additional NULL bytes at the end of the buffer. |dest| must + * have at least |len| + 1 bytes. This function returns |dest|. + */ +char *ngtcp2_encode_printable_ascii(char *dest, const uint8_t *data, + size_t len); + +/* + * ngtcp2_cmemeq returns nonzero if the first |n| bytes of the buffers + * pointed by |a| and |b| are equal. The comparison is done in a + * constant time manner. + */ +int ngtcp2_cmemeq(const uint8_t *a, const uint8_t *b, size_t n); + +#endif /* !defined(NGTCP2_STR_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_strm.c b/contrib/libs/ngtcp2/lib/ngtcp2_strm.c new file mode 100644 index 0000000000..a30b052483 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_strm.c @@ -0,0 +1,778 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_strm.h" + +#include <string.h> +#include <assert.h> + +#include "ngtcp2_rtb.h" +#include "ngtcp2_pkt.h" +#include "ngtcp2_vec.h" +#include "ngtcp2_frame_chain.h" + +static int offset_less(const ngtcp2_ksl_key *lhs, const ngtcp2_ksl_key *rhs) { + return *(int64_t *)lhs < *(int64_t *)rhs; +} + +void ngtcp2_strm_init(ngtcp2_strm *strm, int64_t stream_id, uint32_t flags, + uint64_t max_rx_offset, uint64_t max_tx_offset, + void *stream_user_data, ngtcp2_objalloc *frc_objalloc, + const ngtcp2_mem *mem) { + strm->pe.index = NGTCP2_PQ_BAD_INDEX; + strm->cycle = 0; + strm->frc_objalloc = frc_objalloc; + strm->tx.acked_offset = NULL; + strm->tx.cont_acked_offset = 0; + strm->tx.streamfrq = NULL; + strm->tx.offset = 0; + strm->tx.max_offset = max_tx_offset; + strm->tx.last_blocked_offset = UINT64_MAX; + strm->tx.last_max_stream_data_ts = UINT64_MAX; + strm->tx.loss_count = 0; + strm->tx.last_lost_pkt_num = -1; + strm->tx.stop_sending_app_error_code = 0; + strm->tx.reset_stream_app_error_code = 0; + strm->rx.rob = NULL; + strm->rx.cont_offset = 0; + strm->rx.last_offset = 0; + strm->rx.max_offset = strm->rx.unsent_max_offset = strm->rx.window = + max_rx_offset; + strm->mem = mem; + strm->stream_id = stream_id; + strm->stream_user_data = stream_user_data; + strm->flags = flags; + strm->app_error_code = 0; +} + +void ngtcp2_strm_free(ngtcp2_strm *strm) { + ngtcp2_ksl_it it; + + if (strm == NULL) { + return; + } + + if (strm->tx.streamfrq) { + for (it = ngtcp2_ksl_begin(strm->tx.streamfrq); !ngtcp2_ksl_it_end(&it); + ngtcp2_ksl_it_next(&it)) { + ngtcp2_frame_chain_objalloc_del(ngtcp2_ksl_it_get(&it), + strm->frc_objalloc, strm->mem); + } + + ngtcp2_ksl_free(strm->tx.streamfrq); + ngtcp2_mem_free(strm->mem, strm->tx.streamfrq); + } + + if (strm->rx.rob) { + ngtcp2_rob_free(strm->rx.rob); + ngtcp2_mem_free(strm->mem, strm->rx.rob); + } + + if (strm->tx.acked_offset) { + ngtcp2_gaptr_free(strm->tx.acked_offset); + ngtcp2_mem_free(strm->mem, strm->tx.acked_offset); + } +} + +static int strm_rob_init(ngtcp2_strm *strm) { + int rv; + ngtcp2_rob *rob = ngtcp2_mem_malloc(strm->mem, sizeof(*rob)); + + if (rob == NULL) { + return NGTCP2_ERR_NOMEM; + } + + rv = ngtcp2_rob_init(rob, 8 * 1024, strm->mem); + if (rv != 0) { + ngtcp2_mem_free(strm->mem, rob); + return rv; + } + + strm->rx.rob = rob; + + return 0; +} + +uint64_t ngtcp2_strm_rx_offset(const ngtcp2_strm *strm) { + if (strm->rx.rob == NULL) { + return strm->rx.cont_offset; + } + return ngtcp2_rob_first_gap_offset(strm->rx.rob); +} + +/* strm_rob_heavily_fragmented returns nonzero if the number of gaps + in |rob| exceeds the limit. */ +static int strm_rob_heavily_fragmented(const ngtcp2_rob *rob) { + return ngtcp2_ksl_len(&rob->gapksl) >= 5000; +} + +int ngtcp2_strm_recv_reordering(ngtcp2_strm *strm, const uint8_t *data, + size_t datalen, uint64_t offset) { + int rv; + + if (strm->rx.rob == NULL) { + rv = strm_rob_init(strm); + if (rv != 0) { + return rv; + } + + if (strm->rx.cont_offset) { + ngtcp2_rob_remove_prefix(strm->rx.rob, strm->rx.cont_offset); + } + } + + if (strm_rob_heavily_fragmented(strm->rx.rob)) { + return NGTCP2_ERR_INTERNAL; + } + + return ngtcp2_rob_push(strm->rx.rob, offset, data, datalen); +} + +void ngtcp2_strm_update_rx_offset(ngtcp2_strm *strm, uint64_t offset) { + if (strm->rx.rob == NULL) { + strm->rx.cont_offset = offset; + return; + } + + ngtcp2_rob_remove_prefix(strm->rx.rob, offset); +} + +void ngtcp2_strm_discard_reordered_data(ngtcp2_strm *strm) { + if (strm->rx.rob == NULL) { + return; + } + + strm->rx.cont_offset = ngtcp2_strm_rx_offset(strm); + + ngtcp2_rob_free(strm->rx.rob); + ngtcp2_mem_free(strm->mem, strm->rx.rob); + strm->rx.rob = NULL; +} + +void ngtcp2_strm_shutdown(ngtcp2_strm *strm, uint32_t flags) { + strm->flags |= flags & NGTCP2_STRM_FLAG_SHUT_RDWR; +} + +static int strm_streamfrq_init(ngtcp2_strm *strm) { + ngtcp2_ksl *streamfrq = ngtcp2_mem_malloc(strm->mem, sizeof(*streamfrq)); + if (streamfrq == NULL) { + return NGTCP2_ERR_NOMEM; + } + + ngtcp2_ksl_init(streamfrq, offset_less, sizeof(uint64_t), strm->mem); + + strm->tx.streamfrq = streamfrq; + + return 0; +} + +int ngtcp2_strm_streamfrq_push(ngtcp2_strm *strm, ngtcp2_frame_chain *frc) { + int rv; + + assert(frc->fr.type == NGTCP2_FRAME_STREAM || + frc->fr.type == NGTCP2_FRAME_CRYPTO); + assert(frc->next == NULL); + + if (strm->tx.streamfrq == NULL) { + rv = strm_streamfrq_init(strm); + if (rv != 0) { + return rv; + } + } + + return ngtcp2_ksl_insert(strm->tx.streamfrq, NULL, &frc->fr.stream.offset, + frc); +} + +static int strm_streamfrq_unacked_pop(ngtcp2_strm *strm, + ngtcp2_frame_chain **pfrc) { + ngtcp2_frame_chain *frc, *nfrc; + ngtcp2_stream *fr, *nfr; + uint64_t offset, end_offset; + size_t idx, end_idx; + uint64_t base_offset, end_base_offset; + ngtcp2_range gap; + ngtcp2_vec *v; + int rv; + ngtcp2_ksl_it it; + + *pfrc = NULL; + + assert(strm->tx.streamfrq); + assert(ngtcp2_ksl_len(strm->tx.streamfrq)); + + for (it = ngtcp2_ksl_begin(strm->tx.streamfrq); !ngtcp2_ksl_it_end(&it);) { + frc = ngtcp2_ksl_it_get(&it); + fr = &frc->fr.stream; + + ngtcp2_ksl_remove_hint(strm->tx.streamfrq, &it, &it, &fr->offset); + + idx = 0; + offset = fr->offset; + base_offset = 0; + + gap = ngtcp2_strm_get_unacked_range_after(strm, offset); + if (gap.begin < offset) { + gap.begin = offset; + } + + for (; idx < fr->datacnt && offset < gap.begin; ++idx) { + v = &fr->data[idx]; + if (offset + v->len > gap.begin) { + base_offset = gap.begin - offset; + break; + } + + offset += v->len; + } + + if (idx == fr->datacnt) { + if (fr->fin) { + if (strm->flags & NGTCP2_STRM_FLAG_FIN_ACKED) { + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + assert(ngtcp2_ksl_len(strm->tx.streamfrq) == 0); + return 0; + } + + fr->offset += ngtcp2_vec_len(fr->data, fr->datacnt); + fr->datacnt = 0; + + *pfrc = frc; + + return 0; + } + + if (fr->offset == 0 && fr->datacnt == 0 && strm->tx.offset == 0 && + !(strm->flags & NGTCP2_STRM_FLAG_ANY_ACKED)) { + *pfrc = frc; + + return 0; + } + + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + + continue; + } + + assert(gap.begin == offset + base_offset); + + end_idx = idx; + end_offset = offset; + end_base_offset = 0; + + for (; end_idx < fr->datacnt; ++end_idx) { + v = &fr->data[end_idx]; + if (end_offset + v->len > gap.end) { + end_base_offset = gap.end - end_offset; + break; + } + + end_offset += v->len; + } + + if (fr->offset == offset && base_offset == 0 && fr->datacnt == end_idx) { + *pfrc = frc; + return 0; + } + + if (fr->datacnt == end_idx) { + memmove(fr->data, fr->data + idx, sizeof(fr->data[0]) * (end_idx - idx)); + + assert(fr->data[0].len > base_offset); + + fr->offset = offset + base_offset; + fr->datacnt = end_idx - idx; + fr->data[0].base += base_offset; + fr->data[0].len -= (size_t)base_offset; + + *pfrc = frc; + + return 0; + } + + rv = ngtcp2_frame_chain_stream_datacnt_objalloc_new( + &nfrc, fr->datacnt - end_idx, strm->frc_objalloc, strm->mem); + if (rv != 0) { + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + return rv; + } + + nfr = &nfrc->fr.stream; + memcpy(nfr->data, fr->data + end_idx, + sizeof(nfr->data[0]) * (fr->datacnt - end_idx)); + + assert(nfr->data[0].len > end_base_offset); + + nfr->type = fr->type; + nfr->flags = 0; + nfr->fin = fr->fin; + nfr->stream_id = fr->stream_id; + nfr->offset = end_offset + end_base_offset; + nfr->datacnt = fr->datacnt - end_idx; + nfr->data[0].base += end_base_offset; + nfr->data[0].len -= (size_t)end_base_offset; + + rv = ngtcp2_ksl_insert(strm->tx.streamfrq, NULL, &nfr->offset, nfrc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + ngtcp2_frame_chain_objalloc_del(nfrc, strm->frc_objalloc, strm->mem); + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + + return rv; + } + + if (end_base_offset) { + ++end_idx; + } + + memmove(fr->data, fr->data + idx, sizeof(fr->data[0]) * (end_idx - idx)); + + assert(fr->data[0].len > base_offset); + + fr->fin = 0; + fr->offset = offset + base_offset; + fr->datacnt = end_idx - idx; + + if (end_base_offset) { + assert(fr->data[fr->datacnt - 1].len > end_base_offset); + fr->data[fr->datacnt - 1].len = (size_t)end_base_offset; + } + + fr->data[0].base += base_offset; + fr->data[0].len -= (size_t)base_offset; + + *pfrc = frc; + + return 0; + } + + return 0; +} + +int ngtcp2_strm_streamfrq_pop(ngtcp2_strm *strm, ngtcp2_frame_chain **pfrc, + size_t left) { + ngtcp2_stream *fr, *nfr; + ngtcp2_frame_chain *frc, *nfrc, *sfrc; + int rv; + size_t nmerged; + uint64_t datalen; + ngtcp2_vec a[NGTCP2_MAX_STREAM_DATACNT]; + ngtcp2_vec b[NGTCP2_MAX_STREAM_DATACNT]; + size_t acnt, bcnt; + uint64_t unacked_offset; + + if (strm->tx.streamfrq == NULL || ngtcp2_ksl_len(strm->tx.streamfrq) == 0) { + *pfrc = NULL; + return 0; + } + + rv = strm_streamfrq_unacked_pop(strm, &frc); + if (rv != 0) { + return rv; + } + + if (frc == NULL) { + *pfrc = NULL; + return 0; + } + + fr = &frc->fr.stream; + datalen = ngtcp2_vec_len(fr->data, fr->datacnt); + + /* datalen could be zero if 0 length STREAM has been sent */ + if (left == 0 && datalen) { + rv = ngtcp2_ksl_insert(strm->tx.streamfrq, NULL, &fr->offset, frc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + return rv; + } + + *pfrc = NULL; + + return 0; + } + + if (datalen > left) { + ngtcp2_vec_copy(a, fr->data, fr->datacnt); + acnt = fr->datacnt; + + bcnt = 0; + ngtcp2_vec_split(b, &bcnt, a, &acnt, left, NGTCP2_MAX_STREAM_DATACNT); + + assert(acnt > 0); + assert(bcnt > 0); + + rv = ngtcp2_frame_chain_stream_datacnt_objalloc_new( + &nfrc, bcnt, strm->frc_objalloc, strm->mem); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + return rv; + } + + nfr = &nfrc->fr.stream; + nfr->type = fr->type; + nfr->flags = 0; + nfr->fin = fr->fin; + nfr->stream_id = fr->stream_id; + nfr->offset = fr->offset + left; + nfr->datacnt = bcnt; + ngtcp2_vec_copy(nfr->data, b, bcnt); + + rv = ngtcp2_ksl_insert(strm->tx.streamfrq, NULL, &nfr->offset, nfrc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + ngtcp2_frame_chain_objalloc_del(nfrc, strm->frc_objalloc, strm->mem); + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + + return rv; + } + + rv = ngtcp2_frame_chain_stream_datacnt_objalloc_new( + &nfrc, acnt, strm->frc_objalloc, strm->mem); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + return rv; + } + + nfr = &nfrc->fr.stream; + *nfr = *fr; + nfr->fin = 0; + nfr->datacnt = acnt; + ngtcp2_vec_copy(nfr->data, a, acnt); + + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + + *pfrc = nfrc; + + return 0; + } + + left -= (size_t)datalen; + + ngtcp2_vec_copy(a, fr->data, fr->datacnt); + acnt = fr->datacnt; + + for (; left && ngtcp2_ksl_len(strm->tx.streamfrq);) { + unacked_offset = ngtcp2_strm_streamfrq_unacked_offset(strm); + if (unacked_offset != fr->offset + datalen) { + assert(fr->offset + datalen < unacked_offset); + break; + } + + rv = strm_streamfrq_unacked_pop(strm, &nfrc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + return rv; + } + if (nfrc == NULL) { + break; + } + + nfr = &nfrc->fr.stream; + + if (nfr->fin && nfr->datacnt == 0) { + fr->fin = 1; + ngtcp2_frame_chain_objalloc_del(nfrc, strm->frc_objalloc, strm->mem); + break; + } + + bcnt = nfr->datacnt; + + nmerged = ngtcp2_vec_merge(a, &acnt, nfr->data, &bcnt, left, + NGTCP2_MAX_STREAM_DATACNT); + if (nmerged == 0) { + rv = ngtcp2_ksl_insert(strm->tx.streamfrq, NULL, &nfr->offset, nfrc); + if (rv != 0) { + assert(ngtcp2_err_is_fatal(rv)); + ngtcp2_frame_chain_objalloc_del(nfrc, strm->frc_objalloc, strm->mem); + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + + return rv; + } + + break; + } + + datalen += nmerged; + left -= nmerged; + + if (bcnt == 0) { + fr->fin = nfr->fin; + ngtcp2_frame_chain_objalloc_del(nfrc, strm->frc_objalloc, strm->mem); + continue; + } + + if (nfr->datacnt <= NGTCP2_FRAME_CHAIN_STREAM_DATACNT_THRES || + bcnt > NGTCP2_FRAME_CHAIN_STREAM_DATACNT_THRES) { + nfr->offset += nmerged; + nfr->datacnt = bcnt; + + rv = ngtcp2_ksl_insert(strm->tx.streamfrq, NULL, &nfr->offset, nfrc); + if (rv != 0) { + ngtcp2_frame_chain_objalloc_del(nfrc, strm->frc_objalloc, strm->mem); + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + return rv; + } + } else { + rv = ngtcp2_frame_chain_stream_datacnt_objalloc_new( + &sfrc, bcnt, strm->frc_objalloc, strm->mem); + if (rv != 0) { + ngtcp2_frame_chain_objalloc_del(nfrc, strm->frc_objalloc, strm->mem); + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + return rv; + } + + sfrc->fr.stream = nfrc->fr.stream; + sfrc->fr.stream.offset += nmerged; + sfrc->fr.stream.datacnt = bcnt; + ngtcp2_vec_copy(sfrc->fr.stream.data, nfrc->fr.stream.data, bcnt); + + ngtcp2_frame_chain_objalloc_del(nfrc, strm->frc_objalloc, strm->mem); + + rv = ngtcp2_ksl_insert(strm->tx.streamfrq, NULL, &sfrc->fr.stream.offset, + sfrc); + if (rv != 0) { + ngtcp2_frame_chain_objalloc_del(sfrc, strm->frc_objalloc, strm->mem); + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + return rv; + } + } + + break; + } + + if (acnt == fr->datacnt) { + if (acnt > 0) { + fr->data[acnt - 1] = a[acnt - 1]; + } + + *pfrc = frc; + + return 0; + } + + assert(acnt > fr->datacnt); + + rv = ngtcp2_frame_chain_stream_datacnt_objalloc_new( + &nfrc, acnt, strm->frc_objalloc, strm->mem); + if (rv != 0) { + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + return rv; + } + + nfr = &nfrc->fr.stream; + *nfr = *fr; + nfr->datacnt = acnt; + ngtcp2_vec_copy(nfr->data, a, acnt); + + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + + *pfrc = nfrc; + + return 0; +} + +uint64_t ngtcp2_strm_streamfrq_unacked_offset(const ngtcp2_strm *strm) { + ngtcp2_frame_chain *frc; + ngtcp2_stream *fr; + ngtcp2_range gap; + ngtcp2_ksl_it it; + uint64_t datalen; + + assert(strm->tx.streamfrq); + assert(ngtcp2_ksl_len(strm->tx.streamfrq)); + + for (it = ngtcp2_ksl_begin(strm->tx.streamfrq); !ngtcp2_ksl_it_end(&it); + ngtcp2_ksl_it_next(&it)) { + frc = ngtcp2_ksl_it_get(&it); + fr = &frc->fr.stream; + + gap = ngtcp2_strm_get_unacked_range_after(strm, fr->offset); + + datalen = ngtcp2_vec_len(fr->data, fr->datacnt); + + if (gap.begin <= fr->offset) { + return fr->offset; + } + + if (gap.begin < fr->offset + datalen) { + return gap.begin; + } + + if (fr->offset + datalen == gap.begin && fr->fin && + !(strm->flags & NGTCP2_STRM_FLAG_FIN_ACKED)) { + return fr->offset + datalen; + } + } + + return (uint64_t)-1; +} + +ngtcp2_frame_chain *ngtcp2_strm_streamfrq_top(const ngtcp2_strm *strm) { + ngtcp2_ksl_it it; + + assert(strm->tx.streamfrq); + assert(ngtcp2_ksl_len(strm->tx.streamfrq)); + + it = ngtcp2_ksl_begin(strm->tx.streamfrq); + + return ngtcp2_ksl_it_get(&it); +} + +int ngtcp2_strm_streamfrq_empty(const ngtcp2_strm *strm) { + return strm->tx.streamfrq == NULL || ngtcp2_ksl_len(strm->tx.streamfrq) == 0; +} + +void ngtcp2_strm_streamfrq_clear(ngtcp2_strm *strm) { + ngtcp2_frame_chain *frc; + ngtcp2_ksl_it it; + + if (strm->tx.streamfrq == NULL) { + return; + } + + for (it = ngtcp2_ksl_begin(strm->tx.streamfrq); !ngtcp2_ksl_it_end(&it); + ngtcp2_ksl_it_next(&it)) { + frc = ngtcp2_ksl_it_get(&it); + ngtcp2_frame_chain_objalloc_del(frc, strm->frc_objalloc, strm->mem); + } + + ngtcp2_ksl_clear(strm->tx.streamfrq); +} + +int ngtcp2_strm_is_tx_queued(const ngtcp2_strm *strm) { + return strm->pe.index != NGTCP2_PQ_BAD_INDEX; +} + +int ngtcp2_strm_is_all_tx_data_acked(const ngtcp2_strm *strm) { + if (strm->tx.acked_offset == NULL) { + return strm->tx.cont_acked_offset == strm->tx.offset; + } + + return ngtcp2_gaptr_first_gap_offset(strm->tx.acked_offset) == + strm->tx.offset; +} + +int ngtcp2_strm_is_all_tx_data_fin_acked(const ngtcp2_strm *strm) { + return (strm->flags & NGTCP2_STRM_FLAG_FIN_ACKED) && + ngtcp2_strm_is_all_tx_data_acked(strm); +} + +ngtcp2_range ngtcp2_strm_get_unacked_range_after(const ngtcp2_strm *strm, + uint64_t offset) { + ngtcp2_range gap; + + if (strm->tx.acked_offset == NULL) { + gap.begin = strm->tx.cont_acked_offset; + gap.end = UINT64_MAX; + return gap; + } + + return ngtcp2_gaptr_get_first_gap_after(strm->tx.acked_offset, offset); +} + +uint64_t ngtcp2_strm_get_acked_offset(const ngtcp2_strm *strm) { + if (strm->tx.acked_offset == NULL) { + return strm->tx.cont_acked_offset; + } + + return ngtcp2_gaptr_first_gap_offset(strm->tx.acked_offset); +} + +static int strm_acked_offset_init(ngtcp2_strm *strm) { + ngtcp2_gaptr *acked_offset = + ngtcp2_mem_malloc(strm->mem, sizeof(*acked_offset)); + + if (acked_offset == NULL) { + return NGTCP2_ERR_NOMEM; + } + + ngtcp2_gaptr_init(acked_offset, strm->mem); + + strm->tx.acked_offset = acked_offset; + + return 0; +} + +int ngtcp2_strm_ack_data(ngtcp2_strm *strm, uint64_t offset, uint64_t len) { + int rv; + + if (strm->tx.acked_offset == NULL) { + if (strm->tx.cont_acked_offset == offset) { + strm->tx.cont_acked_offset += len; + return 0; + } + + rv = strm_acked_offset_init(strm); + if (rv != 0) { + return rv; + } + + rv = + ngtcp2_gaptr_push(strm->tx.acked_offset, 0, strm->tx.cont_acked_offset); + if (rv != 0) { + return rv; + } + } + + return ngtcp2_gaptr_push(strm->tx.acked_offset, offset, len); +} + +void ngtcp2_strm_set_app_error_code(ngtcp2_strm *strm, + uint64_t app_error_code) { + if (strm->flags & NGTCP2_STRM_FLAG_APP_ERROR_CODE_SET) { + return; + } + + assert(0 == strm->app_error_code); + + strm->flags |= NGTCP2_STRM_FLAG_APP_ERROR_CODE_SET; + strm->app_error_code = app_error_code; +} + +int ngtcp2_strm_require_retransmit_reset_stream(const ngtcp2_strm *strm) { + return !ngtcp2_strm_is_all_tx_data_fin_acked(strm); +} + +int ngtcp2_strm_require_retransmit_stop_sending(const ngtcp2_strm *strm) { + return !(strm->flags & NGTCP2_STRM_FLAG_SHUT_RD) || + ngtcp2_strm_rx_offset(strm) != strm->rx.last_offset; +} + +int ngtcp2_strm_require_retransmit_max_stream_data( + const ngtcp2_strm *strm, const ngtcp2_max_stream_data *fr) { + return fr->max_stream_data == strm->rx.max_offset && + !(strm->flags & + (NGTCP2_STRM_FLAG_SHUT_RD | NGTCP2_STRM_FLAG_STOP_SENDING)); +} + +int ngtcp2_strm_require_retransmit_stream_data_blocked( + const ngtcp2_strm *strm, const ngtcp2_stream_data_blocked *fr) { + return fr->offset == strm->tx.max_offset && + !(strm->flags & NGTCP2_STRM_FLAG_SHUT_WR); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_strm.h b/contrib/libs/ngtcp2/lib/ngtcp2_strm.h new file mode 100644 index 0000000000..c72f8b9dc8 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_strm.h @@ -0,0 +1,361 @@ +/* + * ngtcp2 + * + * Copyright (c) 2017 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_STRM_H +#define NGTCP2_STRM_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_rob.h" +#include "ngtcp2_map.h" +#include "ngtcp2_gaptr.h" +#include "ngtcp2_ksl.h" +#include "ngtcp2_pq.h" +#include "ngtcp2_pkt.h" + +typedef struct ngtcp2_frame_chain ngtcp2_frame_chain; + +/* NGTCP2_STRM_FLAG_NONE indicates that no flag is set. */ +#define NGTCP2_STRM_FLAG_NONE 0x00u +/* NGTCP2_STRM_FLAG_SHUT_RD indicates that further reception of stream + data is not allowed. */ +#define NGTCP2_STRM_FLAG_SHUT_RD 0x01u +/* NGTCP2_STRM_FLAG_SHUT_WR indicates that further transmission of + stream data is not allowed. */ +#define NGTCP2_STRM_FLAG_SHUT_WR 0x02u +#define NGTCP2_STRM_FLAG_SHUT_RDWR \ + (NGTCP2_STRM_FLAG_SHUT_RD | NGTCP2_STRM_FLAG_SHUT_WR) +/* NGTCP2_STRM_FLAG_RESET_STREAM indicates that RESET_STREAM is sent + from the local endpoint. In this case, NGTCP2_STRM_FLAG_SHUT_WR is + also set. */ +#define NGTCP2_STRM_FLAG_RESET_STREAM 0x04u +/* NGTCP2_STRM_FLAG_RESET_STREAM_RECVED indicates that RESET_STREAM is + received from the remote endpoint. In this case, + NGTCP2_STRM_FLAG_SHUT_RD is also set. */ +#define NGTCP2_STRM_FLAG_RESET_STREAM_RECVED 0x08u +/* NGTCP2_STRM_FLAG_STOP_SENDING indicates that STOP_SENDING is sent + from the local endpoint. */ +#define NGTCP2_STRM_FLAG_STOP_SENDING 0x10u +/* NGTCP2_STRM_FLAG_RESET_STREAM_ACKED indicates that the outgoing + RESET_STREAM is acknowledged by peer. */ +#define NGTCP2_STRM_FLAG_RESET_STREAM_ACKED 0x20u +/* NGTCP2_STRM_FLAG_FIN_ACKED indicates that a STREAM with FIN bit set + is acknowledged by a remote endpoint. */ +#define NGTCP2_STRM_FLAG_FIN_ACKED 0x40u +/* NGTCP2_STRM_FLAG_ANY_ACKED indicates that any portion of stream + data, including 0 length segment, is acknowledged. */ +#define NGTCP2_STRM_FLAG_ANY_ACKED 0x80u +/* NGTCP2_STRM_FLAG_APP_ERROR_CODE_SET indicates that app_error_code + field is set. This resolves the ambiguity that the initial + app_error_code value 0 might be a proper application error code. + In this case, without this flag, we are unable to distinguish + assigned value from unassigned one. */ +#define NGTCP2_STRM_FLAG_APP_ERROR_CODE_SET 0x100u +/* NGTCP2_STRM_FLAG_SEND_STOP_SENDING is set when STOP_SENDING frame + should be sent. */ +#define NGTCP2_STRM_FLAG_SEND_STOP_SENDING 0x200u +/* NGTCP2_STRM_FLAG_SEND_RESET_STREAM is set when RESET_STREAM frame + should be sent. */ +#define NGTCP2_STRM_FLAG_SEND_RESET_STREAM 0x400u +/* NGTCP2_STRM_FLAG_STOP_SENDING_RECVED indicates that STOP_SENDING is + received from the remote endpoint. In this case, + NGTCP2_STRM_FLAG_SHUT_WR is also set. */ +#define NGTCP2_STRM_FLAG_STOP_SENDING_RECVED 0x800u +/* NGTCP2_STRM_FLAG_ANY_SENT indicates that any STREAM frame, + including empty one, has been sent. */ +#define NGTCP2_STRM_FLAG_ANY_SENT 0x1000u + +typedef struct ngtcp2_strm ngtcp2_strm; + +struct ngtcp2_strm { + union { + struct { + ngtcp2_pq_entry pe; + uint64_t cycle; + ngtcp2_objalloc *frc_objalloc; + + struct { + /* acked_offset tracks acknowledged outgoing data. */ + ngtcp2_gaptr *acked_offset; + /* cont_acked_offset is the offset that all data up to this offset + is acknowledged by a remote endpoint. It is used until the + remote endpoint acknowledges data in out-of-order. After that, + acked_offset is used instead. */ + uint64_t cont_acked_offset; + /* streamfrq contains STREAM or CRYPTO frame for + retransmission. The flow control credits have already been + paid when they are transmitted first time. There are no + restriction regarding flow control for retransmission. */ + ngtcp2_ksl *streamfrq; + /* offset is the next offset of new outgoing data. In other + words, it is the number of bytes sent in this stream + without duplication. */ + uint64_t offset; + /* max_tx_offset is the maximum offset that local endpoint can + send for this stream. */ + uint64_t max_offset; + /* last_blocked_offset is the largest offset where the + transmission of stream data is blocked. */ + uint64_t last_blocked_offset; + /* last_max_stream_data_ts is the timestamp when last + MAX_STREAM_DATA frame is sent. */ + ngtcp2_tstamp last_max_stream_data_ts; + /* loss_count is the number of packets that contain STREAM + frame for this stream and are declared to be lost. It may + include the spurious losses. It does not include a packet + whose contents have been reclaimed for PTO and which is + later declared to be lost. Those data are not blocked by + the flow control and will be sent immediately if no other + restrictions are applied. */ + size_t loss_count; + /* last_lost_pkt_num is the packet number of the packet that + is counted to loss_count. It is used to avoid to count + multiple STREAM frames in one lost packet. */ + int64_t last_lost_pkt_num; + /* stop_sending_app_error_code is the application specific + error code that is sent along with STOP_SENDING. */ + uint64_t stop_sending_app_error_code; + /* reset_stream_app_error_code is the application specific + error code that is sent along with RESET_STREAM. */ + uint64_t reset_stream_app_error_code; + } tx; + + struct { + /* rob is the reorder buffer for incoming stream data. The data + received in out of order is buffered and sorted by its offset + in this object. */ + ngtcp2_rob *rob; + /* cont_offset is the largest offset of consecutive data. It is + used until the endpoint receives out-of-order data. After + that, rob is used to track the offset and data. */ + uint64_t cont_offset; + /* last_offset is the largest offset of stream data received for + this stream. */ + uint64_t last_offset; + /* max_offset is the maximum offset that remote endpoint can send + to this stream. */ + uint64_t max_offset; + /* unsent_max_offset is the maximum offset that remote endpoint + can send to this stream, and it is not notified to the remote + endpoint. unsent_max_offset >= max_offset must be hold. */ + uint64_t unsent_max_offset; + /* window is the stream-level flow control window size. */ + uint64_t window; + } rx; + + const ngtcp2_mem *mem; + int64_t stream_id; + void *stream_user_data; + /* flags is bit-wise OR of zero or more of NGTCP2_STRM_FLAG_*. */ + uint32_t flags; + /* app_error_code is an error code the local endpoint sent in + RESET_STREAM or STOP_SENDING, or received from a remote endpoint + in RESET_STREAM or STOP_SENDING. First application error code is + chosen and when set, NGTCP2_STRM_FLAG_APP_ERROR_CODE_SET flag is + set in flags field. */ + uint64_t app_error_code; + }; + + ngtcp2_opl_entry oplent; + }; +}; + +/* + * ngtcp2_strm_init initializes |strm|. + */ +void ngtcp2_strm_init(ngtcp2_strm *strm, int64_t stream_id, uint32_t flags, + uint64_t max_rx_offset, uint64_t max_tx_offset, + void *stream_user_data, ngtcp2_objalloc *frc_objalloc, + const ngtcp2_mem *mem); + +/* + * ngtcp2_strm_free deallocates memory allocated for |strm|. This + * function does not free the memory pointed by |strm| itself. + */ +void ngtcp2_strm_free(ngtcp2_strm *strm); + +/* + * ngtcp2_strm_rx_offset returns the minimum offset of stream data + * which is not received yet. + */ +uint64_t ngtcp2_strm_rx_offset(const ngtcp2_strm *strm); + +/* + * ngtcp2_strm_recv_reordering handles reordered data. + * + * It returns 0 if it succeeds, or one of the following negative error + * codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + */ +int ngtcp2_strm_recv_reordering(ngtcp2_strm *strm, const uint8_t *data, + size_t datalen, uint64_t offset); + +/* + * ngtcp2_strm_update_rx_offset tells that data up to |offset| bytes + * are received in order. + */ +void ngtcp2_strm_update_rx_offset(ngtcp2_strm *strm, uint64_t offset); + +/* + * ngtcp2_strm_discard_reordered_data discards all buffered reordered + * data. + */ +void ngtcp2_strm_discard_reordered_data(ngtcp2_strm *strm); + +/* + * ngtcp2_strm_shutdown shutdowns |strm|. |flags| should be one of + * NGTCP2_STRM_FLAG_SHUT_RD, NGTCP2_STRM_FLAG_SHUT_WR, and + * NGTCP2_STRM_FLAG_SHUT_RDWR. + */ +void ngtcp2_strm_shutdown(ngtcp2_strm *strm, uint32_t flags); + +/* + * ngtcp2_strm_streamfrq_push pushes |frc| to strm->tx.streamfrq for + * retransmission. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + */ +int ngtcp2_strm_streamfrq_push(ngtcp2_strm *strm, ngtcp2_frame_chain *frc); + +/* + * ngtcp2_strm_streamfrq_pop assigns a ngtcp2_frame_chain that only + * contains unacknowledged stream data with smallest offset to |*pfrc| + * for retransmission. The assigned ngtcp2_frame_chain has stream + * data at most |left| bytes. strm->tx.streamfrq is adjusted to + * exclude the portion of data included in it. If there is no stream + * data to send, this function returns 0 and |*pfrc| is NULL. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory + */ +int ngtcp2_strm_streamfrq_pop(ngtcp2_strm *strm, ngtcp2_frame_chain **pfrc, + size_t left); + +/* + * ngtcp2_strm_streamfrq_unacked_offset returns the smallest offset of + * unacknowledged stream data held in strm->tx.streamfrq. + */ +uint64_t ngtcp2_strm_streamfrq_unacked_offset(const ngtcp2_strm *strm); + +/* + * ngtcp2_strm_streamfrq_top returns the first ngtcp2_frame_chain. + * The queue must not be empty. + */ +ngtcp2_frame_chain *ngtcp2_strm_streamfrq_top(const ngtcp2_strm *strm); + +/* + * ngtcp2_strm_streamfrq_empty returns nonzero if streamfrq is empty. + */ +int ngtcp2_strm_streamfrq_empty(const ngtcp2_strm *strm); + +/* + * ngtcp2_strm_streamfrq_clear removes all frames from streamfrq. + */ +void ngtcp2_strm_streamfrq_clear(ngtcp2_strm *strm); + +/* + * ngtcp2_strm_is_tx_queued returns nonzero if |strm| is queued. + */ +int ngtcp2_strm_is_tx_queued(const ngtcp2_strm *strm); + +/* + * ngtcp2_strm_is_all_tx_data_acked returns nonzero if all outgoing + * data for |strm| which have sent so far have been acknowledged. + */ +int ngtcp2_strm_is_all_tx_data_acked(const ngtcp2_strm *strm); + +/* + * ngtcp2_strm_is_all_tx_data_fin_acked behaves like + * ngtcp2_strm_is_all_tx_data_acked, but it also requires that STREAM + * frame with fin bit set is acknowledged. + */ +int ngtcp2_strm_is_all_tx_data_fin_acked(const ngtcp2_strm *strm); + +/* + * ngtcp2_strm_get_unacked_range_after returns the range that is not + * acknowledged yet and includes or comes after |offset|. + */ +ngtcp2_range ngtcp2_strm_get_unacked_range_after(const ngtcp2_strm *strm, + uint64_t offset); + +/* + * ngtcp2_strm_get_acked_offset returns offset, that is the data up to + * this offset have been acknowledged by a remote endpoint. It + * returns 0 if no data is acknowledged. + */ +uint64_t ngtcp2_strm_get_acked_offset(const ngtcp2_strm *strm); + +/* + * ngtcp2_strm_ack_data tells |strm| that the data [|offset|, |offset| + * + |len|) is acknowledged by a remote endpoint. + */ +int ngtcp2_strm_ack_data(ngtcp2_strm *strm, uint64_t offset, uint64_t len); + +/* + * ngtcp2_strm_set_app_error_code sets |app_error_code| to |strm| and + * set NGTCP2_STRM_FLAG_APP_ERROR_CODE_SET flag. If the flag is + * already set, this function does nothing. + */ +void ngtcp2_strm_set_app_error_code(ngtcp2_strm *strm, uint64_t app_error_code); + +/* + * ngtcp2_strm_require_retransmit_reset_stream returns nonzero if + * RESET_STREAM frame should be retransmitted. + */ +int ngtcp2_strm_require_retransmit_reset_stream(const ngtcp2_strm *strm); + +/* + * ngtcp2_strm_require_retransmit_stop_sending returns nonzero if + * STOP_SENDING frame should be retransmitted. + */ +int ngtcp2_strm_require_retransmit_stop_sending(const ngtcp2_strm *strm); + +/* + * ngtcp2_strm_require_retransmit_max_stream_data returns nonzero if + * MAX_STREAM_DATA frame should be retransmitted. + */ +int ngtcp2_strm_require_retransmit_max_stream_data( + const ngtcp2_strm *strm, const ngtcp2_max_stream_data *fr); + +/* + * ngtcp2_strm_require_retransmit_stream_data_blocked returns nonzero + * if STREAM_DATA_BLOCKED frame frame should be retransmitted. + */ +int ngtcp2_strm_require_retransmit_stream_data_blocked( + const ngtcp2_strm *strm, const ngtcp2_stream_data_blocked *fr); + +#endif /* !defined(NGTCP2_STRM_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_transport_params.c b/contrib/libs/ngtcp2/lib/ngtcp2_transport_params.c new file mode 100644 index 0000000000..dda59c4885 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_transport_params.c @@ -0,0 +1,886 @@ +/* + * ngtcp2 + * + * Copyright (c) 2023 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_transport_params.h" + +#include <string.h> +#include <assert.h> + +#include "ngtcp2_conv.h" +#include "ngtcp2_str.h" +#include "ngtcp2_mem.h" +#include "ngtcp2_unreachable.h" + +void ngtcp2_transport_params_default_versioned( + int transport_params_version, ngtcp2_transport_params *params) { + size_t len; + + switch (transport_params_version) { + case NGTCP2_TRANSPORT_PARAMS_VERSION: + len = sizeof(*params); + + break; + default: + ngtcp2_unreachable(); + } + + memset(params, 0, len); + + switch (transport_params_version) { + case NGTCP2_TRANSPORT_PARAMS_VERSION: + params->max_udp_payload_size = NGTCP2_DEFAULT_MAX_RECV_UDP_PAYLOAD_SIZE; + params->active_connection_id_limit = + NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT; + params->ack_delay_exponent = NGTCP2_DEFAULT_ACK_DELAY_EXPONENT; + params->max_ack_delay = NGTCP2_DEFAULT_MAX_ACK_DELAY; + + break; + } +} + +/* + * varint_paramlen returns the length of a single transport parameter + * which has variable integer in its parameter. + */ +static size_t varint_paramlen(ngtcp2_transport_param_id id, uint64_t param) { + size_t valuelen = ngtcp2_put_uvarintlen(param); + return ngtcp2_put_uvarintlen(id) + ngtcp2_put_uvarintlen(valuelen) + valuelen; +} + +/* + * write_varint_param writes parameter |id| of the given |value| in + * varint encoding. It returns p + the number of bytes written. + */ +static uint8_t *write_varint_param(uint8_t *p, ngtcp2_transport_param_id id, + uint64_t value) { + p = ngtcp2_put_uvarint(p, id); + p = ngtcp2_put_uvarint(p, ngtcp2_put_uvarintlen(value)); + return ngtcp2_put_uvarint(p, value); +} + +/* + * zero_paramlen returns the length of a single transport parameter + * which has zero length value in its parameter. + */ +static size_t zero_paramlen(ngtcp2_transport_param_id id) { + return ngtcp2_put_uvarintlen(id) + 1; +} + +/* + * write_zero_param writes parameter |id| that has zero length value. + * It returns p + the number of bytes written. + */ +static uint8_t *write_zero_param(uint8_t *p, ngtcp2_transport_param_id id) { + p = ngtcp2_put_uvarint(p, id); + *p++ = 0; + + return p; +} + +/* + * cid_paramlen returns the length of a single transport parameter + * which has |cid| as value. + */ +static size_t cid_paramlen(ngtcp2_transport_param_id id, + const ngtcp2_cid *cid) { + return ngtcp2_put_uvarintlen(id) + ngtcp2_put_uvarintlen(cid->datalen) + + cid->datalen; +} + +/* + * write_cid_param writes parameter |id| of the given |cid|. It + * returns p + the number of bytes written. + */ +static uint8_t *write_cid_param(uint8_t *p, ngtcp2_transport_param_id id, + const ngtcp2_cid *cid) { + assert(cid->datalen == 0 || cid->datalen >= NGTCP2_MIN_CIDLEN); + assert(cid->datalen <= NGTCP2_MAX_CIDLEN); + + p = ngtcp2_put_uvarint(p, id); + p = ngtcp2_put_uvarint(p, cid->datalen); + if (cid->datalen) { + p = ngtcp2_cpymem(p, cid->data, cid->datalen); + } + return p; +} + +static const uint8_t empty_address[16]; + +ngtcp2_ssize ngtcp2_transport_params_encode_versioned( + uint8_t *dest, size_t destlen, int transport_params_version, + const ngtcp2_transport_params *params) { + uint8_t *p; + size_t len = 0; + /* For some reason, gcc 7.3.0 requires this initialization. */ + size_t preferred_addrlen = 0; + size_t version_infolen = 0; + const ngtcp2_sockaddr_in *sa_in; + const ngtcp2_sockaddr_in6 *sa_in6; + ngtcp2_transport_params paramsbuf; + + params = ngtcp2_transport_params_convert_to_latest( + ¶msbuf, transport_params_version, params); + + if (params->original_dcid_present) { + len += + cid_paramlen(NGTCP2_TRANSPORT_PARAM_ORIGINAL_DESTINATION_CONNECTION_ID, + ¶ms->original_dcid); + } + + if (params->stateless_reset_token_present) { + len += ngtcp2_put_uvarintlen(NGTCP2_TRANSPORT_PARAM_STATELESS_RESET_TOKEN) + + ngtcp2_put_uvarintlen(NGTCP2_STATELESS_RESET_TOKENLEN) + + NGTCP2_STATELESS_RESET_TOKENLEN; + } + + if (params->preferred_addr_present) { + assert(params->preferred_addr.cid.datalen >= NGTCP2_MIN_CIDLEN); + assert(params->preferred_addr.cid.datalen <= NGTCP2_MAX_CIDLEN); + preferred_addrlen = 4 /* ipv4Address */ + 2 /* ipv4Port */ + + 16 /* ipv6Address */ + 2 /* ipv6Port */ + + 1 + params->preferred_addr.cid.datalen /* CID */ + + NGTCP2_STATELESS_RESET_TOKENLEN; + len += ngtcp2_put_uvarintlen(NGTCP2_TRANSPORT_PARAM_PREFERRED_ADDRESS) + + ngtcp2_put_uvarintlen(preferred_addrlen) + preferred_addrlen; + } + if (params->retry_scid_present) { + len += cid_paramlen(NGTCP2_TRANSPORT_PARAM_RETRY_SOURCE_CONNECTION_ID, + ¶ms->retry_scid); + } + + if (params->initial_scid_present) { + len += cid_paramlen(NGTCP2_TRANSPORT_PARAM_INITIAL_SOURCE_CONNECTION_ID, + ¶ms->initial_scid); + } + + if (params->initial_max_stream_data_bidi_local) { + len += + varint_paramlen(NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_LOCAL, + params->initial_max_stream_data_bidi_local); + } + if (params->initial_max_stream_data_bidi_remote) { + len += varint_paramlen( + NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_REMOTE, + params->initial_max_stream_data_bidi_remote); + } + if (params->initial_max_stream_data_uni) { + len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_UNI, + params->initial_max_stream_data_uni); + } + if (params->initial_max_data) { + len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_DATA, + params->initial_max_data); + } + if (params->initial_max_streams_bidi) { + len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_BIDI, + params->initial_max_streams_bidi); + } + if (params->initial_max_streams_uni) { + len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_UNI, + params->initial_max_streams_uni); + } + if (params->max_udp_payload_size != + NGTCP2_DEFAULT_MAX_RECV_UDP_PAYLOAD_SIZE) { + len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_MAX_UDP_PAYLOAD_SIZE, + params->max_udp_payload_size); + } + if (params->ack_delay_exponent != NGTCP2_DEFAULT_ACK_DELAY_EXPONENT) { + len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_ACK_DELAY_EXPONENT, + params->ack_delay_exponent); + } + if (params->disable_active_migration) { + len += zero_paramlen(NGTCP2_TRANSPORT_PARAM_DISABLE_ACTIVE_MIGRATION); + } + if (params->max_ack_delay != NGTCP2_DEFAULT_MAX_ACK_DELAY) { + len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_MAX_ACK_DELAY, + params->max_ack_delay / NGTCP2_MILLISECONDS); + } + if (params->max_idle_timeout) { + len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_MAX_IDLE_TIMEOUT, + params->max_idle_timeout / NGTCP2_MILLISECONDS); + } + if (params->active_connection_id_limit && + params->active_connection_id_limit != + NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT) { + len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_ACTIVE_CONNECTION_ID_LIMIT, + params->active_connection_id_limit); + } + if (params->max_datagram_frame_size) { + len += varint_paramlen(NGTCP2_TRANSPORT_PARAM_MAX_DATAGRAM_FRAME_SIZE, + params->max_datagram_frame_size); + } + if (params->grease_quic_bit) { + len += zero_paramlen(NGTCP2_TRANSPORT_PARAM_GREASE_QUIC_BIT); + } + if (params->version_info_present) { + version_infolen = + sizeof(uint32_t) + params->version_info.available_versionslen; + len += ngtcp2_put_uvarintlen(NGTCP2_TRANSPORT_PARAM_VERSION_INFORMATION) + + ngtcp2_put_uvarintlen(version_infolen) + version_infolen; + } + + if (dest == NULL && destlen == 0) { + return (ngtcp2_ssize)len; + } + + if (destlen < len) { + return NGTCP2_ERR_NOBUF; + } + + p = dest; + + if (params->original_dcid_present) { + p = write_cid_param( + p, NGTCP2_TRANSPORT_PARAM_ORIGINAL_DESTINATION_CONNECTION_ID, + ¶ms->original_dcid); + } + + if (params->stateless_reset_token_present) { + p = ngtcp2_put_uvarint(p, NGTCP2_TRANSPORT_PARAM_STATELESS_RESET_TOKEN); + p = ngtcp2_put_uvarint(p, sizeof(params->stateless_reset_token)); + p = ngtcp2_cpymem(p, params->stateless_reset_token, + sizeof(params->stateless_reset_token)); + } + + if (params->preferred_addr_present) { + p = ngtcp2_put_uvarint(p, NGTCP2_TRANSPORT_PARAM_PREFERRED_ADDRESS); + p = ngtcp2_put_uvarint(p, preferred_addrlen); + + if (params->preferred_addr.ipv4_present) { + sa_in = ¶ms->preferred_addr.ipv4; + p = ngtcp2_cpymem(p, &sa_in->sin_addr, sizeof(sa_in->sin_addr)); + p = ngtcp2_put_uint16(p, sa_in->sin_port); + } else { + p = ngtcp2_cpymem(p, empty_address, sizeof(sa_in->sin_addr)); + p = ngtcp2_put_uint16(p, 0); + } + + if (params->preferred_addr.ipv6_present) { + sa_in6 = ¶ms->preferred_addr.ipv6; + p = ngtcp2_cpymem(p, &sa_in6->sin6_addr, sizeof(sa_in6->sin6_addr)); + p = ngtcp2_put_uint16(p, sa_in6->sin6_port); + } else { + p = ngtcp2_cpymem(p, empty_address, sizeof(sa_in6->sin6_addr)); + p = ngtcp2_put_uint16(p, 0); + } + + *p++ = (uint8_t)params->preferred_addr.cid.datalen; + if (params->preferred_addr.cid.datalen) { + p = ngtcp2_cpymem(p, params->preferred_addr.cid.data, + params->preferred_addr.cid.datalen); + } + p = ngtcp2_cpymem(p, params->preferred_addr.stateless_reset_token, + sizeof(params->preferred_addr.stateless_reset_token)); + } + + if (params->retry_scid_present) { + p = write_cid_param(p, NGTCP2_TRANSPORT_PARAM_RETRY_SOURCE_CONNECTION_ID, + ¶ms->retry_scid); + } + + if (params->initial_scid_present) { + p = write_cid_param(p, NGTCP2_TRANSPORT_PARAM_INITIAL_SOURCE_CONNECTION_ID, + ¶ms->initial_scid); + } + + if (params->initial_max_stream_data_bidi_local) { + p = write_varint_param( + p, NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_LOCAL, + params->initial_max_stream_data_bidi_local); + } + + if (params->initial_max_stream_data_bidi_remote) { + p = write_varint_param( + p, NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_REMOTE, + params->initial_max_stream_data_bidi_remote); + } + + if (params->initial_max_stream_data_uni) { + p = + write_varint_param(p, NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_UNI, + params->initial_max_stream_data_uni); + } + + if (params->initial_max_data) { + p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_DATA, + params->initial_max_data); + } + + if (params->initial_max_streams_bidi) { + p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_BIDI, + params->initial_max_streams_bidi); + } + + if (params->initial_max_streams_uni) { + p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_UNI, + params->initial_max_streams_uni); + } + + if (params->max_udp_payload_size != + NGTCP2_DEFAULT_MAX_RECV_UDP_PAYLOAD_SIZE) { + p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_MAX_UDP_PAYLOAD_SIZE, + params->max_udp_payload_size); + } + + if (params->ack_delay_exponent != NGTCP2_DEFAULT_ACK_DELAY_EXPONENT) { + p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_ACK_DELAY_EXPONENT, + params->ack_delay_exponent); + } + + if (params->disable_active_migration) { + p = write_zero_param(p, NGTCP2_TRANSPORT_PARAM_DISABLE_ACTIVE_MIGRATION); + } + + if (params->max_ack_delay != NGTCP2_DEFAULT_MAX_ACK_DELAY) { + p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_MAX_ACK_DELAY, + params->max_ack_delay / NGTCP2_MILLISECONDS); + } + + if (params->max_idle_timeout) { + p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_MAX_IDLE_TIMEOUT, + params->max_idle_timeout / NGTCP2_MILLISECONDS); + } + + if (params->active_connection_id_limit && + params->active_connection_id_limit != + NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT) { + p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_ACTIVE_CONNECTION_ID_LIMIT, + params->active_connection_id_limit); + } + + if (params->max_datagram_frame_size) { + p = write_varint_param(p, NGTCP2_TRANSPORT_PARAM_MAX_DATAGRAM_FRAME_SIZE, + params->max_datagram_frame_size); + } + + if (params->grease_quic_bit) { + p = write_zero_param(p, NGTCP2_TRANSPORT_PARAM_GREASE_QUIC_BIT); + } + + if (params->version_info_present) { + p = ngtcp2_put_uvarint(p, NGTCP2_TRANSPORT_PARAM_VERSION_INFORMATION); + p = ngtcp2_put_uvarint(p, version_infolen); + p = ngtcp2_put_uint32be(p, params->version_info.chosen_version); + if (params->version_info.available_versionslen) { + p = ngtcp2_cpymem(p, params->version_info.available_versions, + params->version_info.available_versionslen); + } + } + + assert((size_t)(p - dest) == len); + + return (ngtcp2_ssize)len; +} + +/* + * decode_varint decodes a single varint from the buffer pointed by + * |*pp| of length |end - *pp|. If it decodes an integer + * successfully, it stores the integer in |*pdest|, increment |*pp| by + * the number of bytes read from |*pp|, and returns 0. Otherwise it + * returns -1. + */ +static int decode_varint(uint64_t *pdest, const uint8_t **pp, + const uint8_t *end) { + const uint8_t *p = *pp; + size_t len; + + if (p == end) { + return -1; + } + + len = ngtcp2_get_uvarintlen(p); + if ((uint64_t)(end - p) < len) { + return -1; + } + + *pp = ngtcp2_get_uvarint(pdest, p); + + return 0; +} + +/* + * decode_varint_param decodes length prefixed value from the buffer + * pointed by |*pp| of length |end - *pp|. The length and value are + * encoded in varint form. If it decodes a value successfully, it + * stores the value in |*pdest|, increment |*pp| by the number of + * bytes read from |*pp|, and returns 0. Otherwise it returns -1. + */ +static int decode_varint_param(uint64_t *pdest, const uint8_t **pp, + const uint8_t *end) { + const uint8_t *p = *pp; + uint64_t valuelen; + + if (decode_varint(&valuelen, &p, end) != 0) { + return -1; + } + + if (p == end) { + return -1; + } + + if ((uint64_t)(end - p) < valuelen) { + return -1; + } + + if (ngtcp2_get_uvarintlen(p) != valuelen) { + return -1; + } + + *pp = ngtcp2_get_uvarint(pdest, p); + + return 0; +} + +/* + * decode_zero_param decodes zero length value from the buffer pointed + * by |*pp| of length |end - *pp|. The length is encoded in varint + * form. If it decodes zero length value successfully, it increments + * |*pp| by 1, and returns 0. Otherwise it returns -1. + */ +static int decode_zero_param(const uint8_t **pp, const uint8_t *end) { + if (*pp == end || **pp != 0) { + return -1; + } + + ++*pp; + + return 0; +} + +/* + * decode_cid_param decodes length prefixed ngtcp2_cid from the buffer + * pointed by |*pp| of length |end - *pp|. The length is encoded in + * varint form. If it decodes a value successfully, it stores the + * value in |*pdest|, increment |*pp| by the number of read from + * |*pp|, and returns the number of bytes read. Otherwise it returns + * the one of the negative error code: + * + * NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM + * Could not decode Connection ID. + */ +static int decode_cid_param(ngtcp2_cid *pdest, const uint8_t **pp, + const uint8_t *end) { + const uint8_t *p = *pp; + uint64_t valuelen; + + if (decode_varint(&valuelen, &p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + + if ((valuelen != 0 && valuelen < NGTCP2_MIN_CIDLEN) || + valuelen > NGTCP2_MAX_CIDLEN || (size_t)(end - p) < valuelen) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + + ngtcp2_cid_init(pdest, p, (size_t)valuelen); + + p += valuelen; + + *pp = p; + + return 0; +} + +int ngtcp2_transport_params_decode_versioned(int transport_params_version, + ngtcp2_transport_params *dest, + const uint8_t *data, + size_t datalen) { + const uint8_t *p, *end, *lend; + size_t len; + uint64_t param_type; + uint64_t valuelen; + int rv; + ngtcp2_sockaddr_in *sa_in; + ngtcp2_sockaddr_in6 *sa_in6; + uint32_t version; + ngtcp2_transport_params *params, paramsbuf; + + if (transport_params_version == NGTCP2_TRANSPORT_PARAMS_VERSION) { + params = dest; + } else { + params = ¶msbuf; + } + + /* Set default values */ + memset(params, 0, sizeof(*params)); + params->max_udp_payload_size = NGTCP2_DEFAULT_MAX_RECV_UDP_PAYLOAD_SIZE; + params->ack_delay_exponent = NGTCP2_DEFAULT_ACK_DELAY_EXPONENT; + params->max_ack_delay = NGTCP2_DEFAULT_MAX_ACK_DELAY; + params->active_connection_id_limit = + NGTCP2_DEFAULT_ACTIVE_CONNECTION_ID_LIMIT; + + p = data; + end = data + datalen; + + for (; (size_t)(end - p) >= 2;) { + if (decode_varint(¶m_type, &p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + + switch (param_type) { + case NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_LOCAL: + if (decode_varint_param(¶ms->initial_max_stream_data_bidi_local, &p, + end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + break; + case NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_REMOTE: + if (decode_varint_param(¶ms->initial_max_stream_data_bidi_remote, &p, + end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + break; + case NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_UNI: + if (decode_varint_param(¶ms->initial_max_stream_data_uni, &p, end) != + 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + break; + case NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_DATA: + if (decode_varint_param(¶ms->initial_max_data, &p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + break; + case NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_BIDI: + if (decode_varint_param(¶ms->initial_max_streams_bidi, &p, end) != + 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + if (params->initial_max_streams_bidi > NGTCP2_MAX_STREAMS) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + break; + case NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_UNI: + if (decode_varint_param(¶ms->initial_max_streams_uni, &p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + if (params->initial_max_streams_uni > NGTCP2_MAX_STREAMS) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + break; + case NGTCP2_TRANSPORT_PARAM_MAX_IDLE_TIMEOUT: + if (decode_varint_param(¶ms->max_idle_timeout, &p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + params->max_idle_timeout *= NGTCP2_MILLISECONDS; + break; + case NGTCP2_TRANSPORT_PARAM_MAX_UDP_PAYLOAD_SIZE: + if (decode_varint_param(¶ms->max_udp_payload_size, &p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + break; + case NGTCP2_TRANSPORT_PARAM_STATELESS_RESET_TOKEN: + if (decode_varint(&valuelen, &p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + if ((size_t)valuelen != sizeof(params->stateless_reset_token)) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + if ((size_t)(end - p) < sizeof(params->stateless_reset_token)) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + + p = ngtcp2_get_bytes(params->stateless_reset_token, p, + sizeof(params->stateless_reset_token)); + params->stateless_reset_token_present = 1; + + break; + case NGTCP2_TRANSPORT_PARAM_ACK_DELAY_EXPONENT: + if (decode_varint_param(¶ms->ack_delay_exponent, &p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + if (params->ack_delay_exponent > 20) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + break; + case NGTCP2_TRANSPORT_PARAM_PREFERRED_ADDRESS: + if (decode_varint(&valuelen, &p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + if ((size_t)(end - p) < valuelen) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + len = 4 /* ipv4Address */ + 2 /* ipv4Port */ + 16 /* ipv6Address */ + + 2 /* ipv6Port */ + + 1 /* cid length */ + NGTCP2_STATELESS_RESET_TOKENLEN; + if (valuelen < len) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + + sa_in = ¶ms->preferred_addr.ipv4; + + p = ngtcp2_get_bytes(&sa_in->sin_addr, p, sizeof(sa_in->sin_addr)); + p = ngtcp2_get_uint16(&sa_in->sin_port, p); + + if (sa_in->sin_port || memcmp(empty_address, &sa_in->sin_addr, + sizeof(sa_in->sin_addr)) != 0) { + sa_in->sin_family = NGTCP2_AF_INET; + params->preferred_addr.ipv4_present = 1; + } + + sa_in6 = ¶ms->preferred_addr.ipv6; + + p = ngtcp2_get_bytes(&sa_in6->sin6_addr, p, sizeof(sa_in6->sin6_addr)); + p = ngtcp2_get_uint16(&sa_in6->sin6_port, p); + + if (sa_in6->sin6_port || memcmp(empty_address, &sa_in6->sin6_addr, + sizeof(sa_in6->sin6_addr)) != 0) { + sa_in6->sin6_family = NGTCP2_AF_INET6; + params->preferred_addr.ipv6_present = 1; + } + + /* cid */ + params->preferred_addr.cid.datalen = *p++; + len += params->preferred_addr.cid.datalen; + if (valuelen != len || + params->preferred_addr.cid.datalen > NGTCP2_MAX_CIDLEN || + params->preferred_addr.cid.datalen < NGTCP2_MIN_CIDLEN) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + if (params->preferred_addr.cid.datalen) { + p = ngtcp2_get_bytes(params->preferred_addr.cid.data, p, + params->preferred_addr.cid.datalen); + } + + /* stateless reset token */ + p = + ngtcp2_get_bytes(params->preferred_addr.stateless_reset_token, p, + sizeof(params->preferred_addr.stateless_reset_token)); + params->preferred_addr_present = 1; + break; + case NGTCP2_TRANSPORT_PARAM_DISABLE_ACTIVE_MIGRATION: + if (decode_zero_param(&p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + params->disable_active_migration = 1; + break; + case NGTCP2_TRANSPORT_PARAM_ORIGINAL_DESTINATION_CONNECTION_ID: + rv = decode_cid_param(¶ms->original_dcid, &p, end); + if (rv != 0) { + return rv; + } + params->original_dcid_present = 1; + break; + case NGTCP2_TRANSPORT_PARAM_RETRY_SOURCE_CONNECTION_ID: + rv = decode_cid_param(¶ms->retry_scid, &p, end); + if (rv != 0) { + return rv; + } + params->retry_scid_present = 1; + break; + case NGTCP2_TRANSPORT_PARAM_INITIAL_SOURCE_CONNECTION_ID: + rv = decode_cid_param(¶ms->initial_scid, &p, end); + if (rv != 0) { + return rv; + } + params->initial_scid_present = 1; + break; + case NGTCP2_TRANSPORT_PARAM_MAX_ACK_DELAY: + if (decode_varint_param(¶ms->max_ack_delay, &p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + if (params->max_ack_delay >= 16384) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + params->max_ack_delay *= NGTCP2_MILLISECONDS; + break; + case NGTCP2_TRANSPORT_PARAM_ACTIVE_CONNECTION_ID_LIMIT: + if (decode_varint_param(¶ms->active_connection_id_limit, &p, end) != + 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + break; + case NGTCP2_TRANSPORT_PARAM_MAX_DATAGRAM_FRAME_SIZE: + if (decode_varint_param(¶ms->max_datagram_frame_size, &p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + break; + case NGTCP2_TRANSPORT_PARAM_GREASE_QUIC_BIT: + if (decode_zero_param(&p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + params->grease_quic_bit = 1; + break; + case NGTCP2_TRANSPORT_PARAM_VERSION_INFORMATION: + if (decode_varint(&valuelen, &p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + if ((size_t)(end - p) < valuelen) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + if (valuelen < sizeof(uint32_t) || (valuelen & 0x3)) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + p = ngtcp2_get_uint32be(¶ms->version_info.chosen_version, p); + if (params->version_info.chosen_version == 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + if (valuelen > sizeof(uint32_t)) { + params->version_info.available_versions = (uint8_t *)p; + params->version_info.available_versionslen = + (size_t)valuelen - sizeof(uint32_t); + + for (lend = p + (valuelen - sizeof(uint32_t)); p != lend;) { + p = ngtcp2_get_uint32be(&version, p); + if (version == 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + } + } + params->version_info_present = 1; + break; + default: + /* Ignore unknown parameter */ + if (decode_varint(&valuelen, &p, end) != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + if ((size_t)(end - p) < valuelen) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + p += valuelen; + break; + } + } + + if (end - p != 0) { + return NGTCP2_ERR_MALFORMED_TRANSPORT_PARAM; + } + + if (transport_params_version != NGTCP2_TRANSPORT_PARAMS_VERSION) { + ngtcp2_transport_params_convert_to_old(transport_params_version, dest, + params); + } + + return 0; +} + +static int transport_params_copy_new(ngtcp2_transport_params **pdest, + const ngtcp2_transport_params *src, + const ngtcp2_mem *mem) { + size_t len = sizeof(**pdest); + ngtcp2_transport_params *dest; + uint8_t *p; + + if (src->version_info_present) { + len += src->version_info.available_versionslen; + } + + dest = ngtcp2_mem_malloc(mem, len); + if (dest == NULL) { + return NGTCP2_ERR_NOMEM; + } + + *dest = *src; + + if (src->version_info_present && src->version_info.available_versionslen) { + p = (uint8_t *)dest + sizeof(*dest); + memcpy(p, src->version_info.available_versions, + src->version_info.available_versionslen); + dest->version_info.available_versions = p; + } + + *pdest = dest; + + return 0; +} + +int ngtcp2_transport_params_decode_new(ngtcp2_transport_params **pparams, + const uint8_t *data, size_t datalen, + const ngtcp2_mem *mem) { + int rv; + ngtcp2_transport_params params; + + rv = ngtcp2_transport_params_decode(¶ms, data, datalen); + if (rv < 0) { + return rv; + } + + if (mem == NULL) { + mem = ngtcp2_mem_default(); + } + + return transport_params_copy_new(pparams, ¶ms, mem); +} + +void ngtcp2_transport_params_del(ngtcp2_transport_params *params, + const ngtcp2_mem *mem) { + if (params == NULL) { + return; + } + + if (mem == NULL) { + mem = ngtcp2_mem_default(); + } + + ngtcp2_mem_free(mem, params); +} + +int ngtcp2_transport_params_copy_new(ngtcp2_transport_params **pdest, + const ngtcp2_transport_params *src, + const ngtcp2_mem *mem) { + if (src == NULL) { + *pdest = NULL; + return 0; + } + + return transport_params_copy_new(pdest, src, mem); +} + +static void transport_params_copy(ngtcp2_transport_params *dest, + const ngtcp2_transport_params *src, + int transport_params_version) { + assert(transport_params_version != NGTCP2_TRANSPORT_PARAMS_VERSION); + + switch (transport_params_version) { + case NGTCP2_TRANSPORT_PARAMS_V1: + memcpy(dest, src, + offsetof(ngtcp2_transport_params, version_info_present) + + sizeof(src->version_info_present)); + + break; + } +} + +const ngtcp2_transport_params * +ngtcp2_transport_params_convert_to_latest(ngtcp2_transport_params *dest, + int transport_params_version, + const ngtcp2_transport_params *src) { + if (transport_params_version == NGTCP2_TRANSPORT_PARAMS_VERSION) { + return src; + } + + ngtcp2_transport_params_default(dest); + + transport_params_copy(dest, src, transport_params_version); + + return dest; +} + +void ngtcp2_transport_params_convert_to_old( + int transport_params_version, ngtcp2_transport_params *dest, + const ngtcp2_transport_params *src) { + assert(transport_params_version != NGTCP2_TRANSPORT_PARAMS_VERSION); + + transport_params_copy(dest, src, transport_params_version); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_transport_params.h b/contrib/libs/ngtcp2/lib/ngtcp2_transport_params.h new file mode 100644 index 0000000000..c077f06a9d --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_transport_params.h @@ -0,0 +1,118 @@ +/* + * ngtcp2 + * + * Copyright (c) 2023 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_TRANSPORT_PARAMS_H +#define NGTCP2_TRANSPORT_PARAMS_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +/* ngtcp2_transport_param_id is the registry of QUIC transport + parameter ID. */ +typedef uint64_t ngtcp2_transport_param_id; + +#define NGTCP2_TRANSPORT_PARAM_ORIGINAL_DESTINATION_CONNECTION_ID 0x00 +#define NGTCP2_TRANSPORT_PARAM_MAX_IDLE_TIMEOUT 0x01 +#define NGTCP2_TRANSPORT_PARAM_STATELESS_RESET_TOKEN 0x02 +#define NGTCP2_TRANSPORT_PARAM_MAX_UDP_PAYLOAD_SIZE 0x03 +#define NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_DATA 0x04 +#define NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_LOCAL 0x05 +#define NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_REMOTE 0x06 +#define NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_UNI 0x07 +#define NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_BIDI 0x08 +#define NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_UNI 0x09 +#define NGTCP2_TRANSPORT_PARAM_ACK_DELAY_EXPONENT 0x0a +#define NGTCP2_TRANSPORT_PARAM_MAX_ACK_DELAY 0x0b +#define NGTCP2_TRANSPORT_PARAM_DISABLE_ACTIVE_MIGRATION 0x0c +#define NGTCP2_TRANSPORT_PARAM_PREFERRED_ADDRESS 0x0d +#define NGTCP2_TRANSPORT_PARAM_ACTIVE_CONNECTION_ID_LIMIT 0x0e +#define NGTCP2_TRANSPORT_PARAM_INITIAL_SOURCE_CONNECTION_ID 0x0f +#define NGTCP2_TRANSPORT_PARAM_RETRY_SOURCE_CONNECTION_ID 0x10 +/* https://datatracker.ietf.org/doc/html/rfc9221 */ +#define NGTCP2_TRANSPORT_PARAM_MAX_DATAGRAM_FRAME_SIZE 0x20 +#define NGTCP2_TRANSPORT_PARAM_GREASE_QUIC_BIT 0x2ab2 +/* https://datatracker.ietf.org/doc/html/rfc9368 */ +#define NGTCP2_TRANSPORT_PARAM_VERSION_INFORMATION 0x11 + +/* NGTCP2_MAX_STREAMS is the maximum number of streams. */ +#define NGTCP2_MAX_STREAMS (1LL << 60) + +/* + * ngtcp2_transport_params_copy_new makes a copy of |src|, and assigns + * it to |*pdest|. If |src| is NULL, NULL is assigned to |*pdest|. + * + * Caller is responsible to call ngtcp2_transport_params_del to free + * the memory assigned to |*pdest|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGTCP2_ERR_NOMEM + * Out of memory. + */ +int ngtcp2_transport_params_copy_new(ngtcp2_transport_params **pdest, + const ngtcp2_transport_params *src, + const ngtcp2_mem *mem); + +/* + * ngtcp2_transport_params_convert_to_latest converts |src| of version + * |transport_params_version| to the latest version + * NGTCP2_TRANSPORT_PARAMS_VERSION. + * + * |dest| must point to the latest version. |src| may be the older + * version, and if so, it may have fewer fields. Accessing those + * fields causes undefined behavior. + * + * If |transport_params_version| == NGTCP2_TRANSPORT_PARAMS_VERSION, + * no conversion is made, and |src| is returned. Otherwise, first + * |dest| is initialized via ngtcp2_transport_params_default, and then + * all valid fields in |src| are copied into |dest|. Finally, |dest| + * is returned. + */ +const ngtcp2_transport_params * +ngtcp2_transport_params_convert_to_latest(ngtcp2_transport_params *dest, + int transport_params_version, + const ngtcp2_transport_params *src); + +/* + * ngtcp2_transport_params_convert_to_old converts |src| of the latest + * version to |dest| of version |transport_params_version|. + * + * |transport_params_version| must not be the latest version + * NGTCP2_TRANSPORT_PARAMS_VERSION. + * + * |dest| points to the older version, and it may have fewer fields. + * Accessing those fields causes undefined behavior. + * + * This function copies all valid fields in version + * |transport_params_version| from |src| to |dest|. + */ +void ngtcp2_transport_params_convert_to_old(int transport_params_version, + ngtcp2_transport_params *dest, + const ngtcp2_transport_params *src); + +#endif /* !defined(NGTCP2_TRANSPORT_PARAMS_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_tstamp.h b/contrib/libs/ngtcp2/lib/ngtcp2_tstamp.h new file mode 100644 index 0000000000..2b1bb51d87 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_tstamp.h @@ -0,0 +1,68 @@ +/* + * ngtcp2 + * + * Copyright (c) 2023 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_TSTAMP_H +#define NGTCP2_TSTAMP_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +/* + * ngtcp2_tstamp_elapsed returns nonzero if at least |d| has passed + * since |base|. |ts| expresses a current time, and must not be + * UINT64_MAX. + * + * If |base| is UINT64_MAX, this function returns 0 because UINT64_MAX + * is an invalid timestamp. Otherwise, if |base| + |d| >= UINT64_MAX, + * this function returns 0. + * + * !ngtcp2_tstamp_elapsed() == ngtcp2_tstamp_not_elapsed() does not + * hold when |base| is UINT64_MAX. If you need nonzero if |base| is + * UINT64_MAX, use !ngtcp2_tstamp_elapsed. Otherwise, use + * ngtcp2_tstamp_not_elapsed. + */ +static inline int ngtcp2_tstamp_elapsed(ngtcp2_tstamp base, ngtcp2_duration d, + ngtcp2_tstamp ts) { + return base != UINT64_MAX && base < UINT64_MAX - d && base + d <= ts; +} + +/* + * ngtcp2_tstamp_not_elapsed returns nonzero if |d| has not passed + * since |base|. |ts| expresses a current time, and must not be + * UINT64_MAX. + * + * If |base| is UINT64_MAX, this function returns 0 because UINT64_MAX + * is an invalid timestamp. Otherwise, if |base| + |d| >= UINT64_MAX, + * this function returns nonzero. + */ +static inline int ngtcp2_tstamp_not_elapsed(ngtcp2_tstamp base, + ngtcp2_duration d, + ngtcp2_tstamp ts) { + return base != UINT64_MAX && (base >= UINT64_MAX - d || base + d > ts); +} + +#endif /* !defined(NGTCP2_TSTAMP_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_unreachable.c b/contrib/libs/ngtcp2/lib/ngtcp2_unreachable.c new file mode 100644 index 0000000000..5ab1db72cc --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_unreachable.c @@ -0,0 +1,74 @@ +/* + * ngtcp2 + * + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_unreachable.h" + +#include <stdio.h> +#include <errno.h> +#include <stdlib.h> +#ifdef HAVE_UNISTD_H +# define NGTCP2_UNREACHABLE_LOG +# include <unistd.h> +#elif defined(WIN32) +# define NGTCP2_UNREACHABLE_LOG +# include <io.h> +#endif /* defined(WIN32) */ + +void ngtcp2_unreachable_fail(const char *file, int line, const char *func) { +#ifdef NGTCP2_UNREACHABLE_LOG + char *buf; + size_t buflen; + int rv; + +# define NGTCP2_UNREACHABLE_TEMPLATE "%s:%d %s: Unreachable.\n" + + rv = snprintf(NULL, 0, NGTCP2_UNREACHABLE_TEMPLATE, file, line, func); + if (rv < 0) { + abort(); + } + + /* here we explicitly use system malloc */ + buflen = (size_t)rv + 1; + buf = malloc(buflen); + if (buf == NULL) { + abort(); + } + + rv = snprintf(buf, buflen, NGTCP2_UNREACHABLE_TEMPLATE, file, line, func); + if (rv < 0) { + abort(); + } + +# ifndef WIN32 + while (write(STDERR_FILENO, buf, (size_t)rv) == -1 && errno == EINTR) + ; +# else /* defined(WIN32) */ + _write(_fileno(stderr), buf, (unsigned int)rv); +# endif /* defined(WIN32) */ + + free(buf); +#endif /* defined(NGTCP2_UNREACHABLE_LOG) */ + + abort(); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_unreachable.h b/contrib/libs/ngtcp2/lib/ngtcp2_unreachable.h new file mode 100644 index 0000000000..ca71238652 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_unreachable.h @@ -0,0 +1,52 @@ +/* + * ngtcp2 + * + * Copyright (c) 2022 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_UNREACHABLE_H +#define NGTCP2_UNREACHABLE_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#ifdef __FILE_NAME__ +# define NGTCP2_FILE_NAME __FILE_NAME__ +#else /* !defined(__FILE_NAME__) */ +# define NGTCP2_FILE_NAME "(file)" +#endif /* !defined(__FILE_NAME__) */ + +#define ngtcp2_unreachable() \ + ngtcp2_unreachable_fail(NGTCP2_FILE_NAME, __LINE__, __func__) + +#ifdef _MSC_VER +__declspec(noreturn) +#endif /* defined(_MSC_VER) */ + void ngtcp2_unreachable_fail(const char *file, int line, const char *func) +#ifndef _MSC_VER + __attribute__((noreturn)) +#endif /* !defined(_MSC_VER) */ + ; + +#endif /* !defined(NGTCP2_UNREACHABLE_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_vec.c b/contrib/libs/ngtcp2/lib/ngtcp2_vec.c new file mode 100644 index 0000000000..0b9c92d47d --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_vec.c @@ -0,0 +1,245 @@ +/* + * ngtcp2 + * + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "ngtcp2_vec.h" + +#include <string.h> +#include <assert.h> + +#include "ngtcp2_str.h" + +ngtcp2_vec *ngtcp2_vec_init(ngtcp2_vec *vec, const uint8_t *base, size_t len) { + vec->base = (uint8_t *)base; + vec->len = len; + return vec; +} + +int ngtcp2_vec_new(ngtcp2_vec **pvec, const uint8_t *data, size_t datalen, + const ngtcp2_mem *mem) { + size_t len; + uint8_t *p; + + len = sizeof(ngtcp2_vec) + datalen; + + *pvec = ngtcp2_mem_malloc(mem, len); + if (*pvec == NULL) { + return NGTCP2_ERR_NOMEM; + } + + p = (uint8_t *)(*pvec) + sizeof(ngtcp2_vec); + (*pvec)->base = p; + (*pvec)->len = datalen; + + if (datalen) { + /* p = */ ngtcp2_cpymem(p, data, datalen); + } + + return 0; +} + +void ngtcp2_vec_del(ngtcp2_vec *vec, const ngtcp2_mem *mem) { + ngtcp2_mem_free(mem, vec); +} + +uint64_t ngtcp2_vec_len(const ngtcp2_vec *vec, size_t n) { + size_t i; + size_t res = 0; + + for (i = 0; i < n; ++i) { + res += vec[i].len; + } + + return res; +} + +int64_t ngtcp2_vec_len_varint(const ngtcp2_vec *vec, size_t n) { + uint64_t res = 0; + size_t len; + size_t i; + + for (i = 0; i < n; ++i) { + len = vec[i].len; + if (len > NGTCP2_MAX_VARINT - res) { + return -1; + } + + res += len; + } + + return (int64_t)res; +} + +ngtcp2_ssize ngtcp2_vec_split(ngtcp2_vec *dst, size_t *pdstcnt, ngtcp2_vec *src, + size_t *psrccnt, size_t left, size_t maxcnt) { + size_t i; + size_t srccnt = *psrccnt; + size_t nmove; + size_t extra = 0; + + for (i = 0; i < srccnt; ++i) { + if (left >= src[i].len) { + left -= src[i].len; + continue; + } + + if (*pdstcnt && src[srccnt - 1].base + src[srccnt - 1].len == dst[0].base) { + if (*pdstcnt + srccnt - i - 1 > maxcnt) { + return -1; + } + + dst[0].len += src[srccnt - 1].len; + dst[0].base = src[srccnt - 1].base; + extra = src[srccnt - 1].len; + --srccnt; + } else if (*pdstcnt + srccnt - i > maxcnt) { + return -1; + } + + if (left == 0) { + *psrccnt = i; + } else { + *psrccnt = i + 1; + } + + nmove = srccnt - i; + if (nmove) { + memmove(dst + nmove, dst, sizeof(ngtcp2_vec) * (*pdstcnt)); + *pdstcnt += nmove; + memcpy(dst, src + i, sizeof(ngtcp2_vec) * nmove); + } + + dst[0].len -= left; + dst[0].base += left; + src[i].len = left; + + if (nmove == 0) { + extra -= left; + } + + return (ngtcp2_ssize)(ngtcp2_vec_len(dst, nmove) + extra); + } + + return 0; +} + +size_t ngtcp2_vec_merge(ngtcp2_vec *dst, size_t *pdstcnt, ngtcp2_vec *src, + size_t *psrccnt, size_t left, size_t maxcnt) { + size_t orig_left = left; + size_t i = 0; + ngtcp2_vec *a, *b; + + assert(maxcnt); + + if (*pdstcnt == 0) { + if (*psrccnt == 0) { + return 0; + } + + a = &dst[0]; + b = &src[0]; + + if (left < b->len) { + a->len = left; + a->base = b->base; + + b->len -= left; + b->base += left; + + return left; + } + + *a = *b; + ++*pdstcnt; + left -= b->len; + i = 1; + } + + for (; left && i < *psrccnt; ++i) { + a = &dst[*pdstcnt - 1]; + b = &src[i]; + + if (left < b->len) { + if (a->base + a->len == b->base) { + a->len += left; + } else if (*pdstcnt == maxcnt) { + break; + } else { + dst[*pdstcnt].len = left; + dst[*pdstcnt].base = b->base; + ++*pdstcnt; + } + + b->len -= left; + b->base += left; + left = 0; + + break; + } + + if (a->base + a->len == b->base) { + a->len += b->len; + } else if (*pdstcnt == maxcnt) { + break; + } else { + dst[(*pdstcnt)++] = *b; + } + + left -= b->len; + } + + memmove(src, src + i, sizeof(ngtcp2_vec) * (*psrccnt - i)); + *psrccnt -= i; + + return orig_left - left; +} + +size_t ngtcp2_vec_copy_at_most(ngtcp2_vec *dst, size_t dstcnt, + const ngtcp2_vec *src, size_t srccnt, + size_t left) { + size_t i, j; + + for (i = 0, j = 0; left > 0 && i < srccnt && j < dstcnt;) { + if (src[i].len == 0) { + ++i; + continue; + } + + dst[j] = src[i]; + + if (dst[j].len > left) { + dst[j].len = left; + return j + 1; + } + + left -= dst[j].len; + ++i; + ++j; + } + + return j; +} + +void ngtcp2_vec_copy(ngtcp2_vec *dst, const ngtcp2_vec *src, size_t cnt) { + memcpy(dst, src, sizeof(ngtcp2_vec) * cnt); +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_vec.h b/contrib/libs/ngtcp2/lib/ngtcp2_vec.h new file mode 100644 index 0000000000..f7611efcb7 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_vec.h @@ -0,0 +1,122 @@ +/* + * ngtcp2 + * + * Copyright (c) 2018 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef NGTCP2_VEC_H +#define NGTCP2_VEC_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +#include "ngtcp2_mem.h" + +/* + * ngtcp2_vec_lit is a convenient macro to fill the object pointed by + * |DEST| with the literal string |LIT|. + */ +#define ngtcp2_vec_lit(DEST, LIT) \ + ((DEST)->base = (uint8_t *)(LIT), (DEST)->len = sizeof(LIT) - 1, (DEST)) + +/* + * ngtcp2_vec_init initializes |vec| with the given parameters. It + * returns |vec|. + */ +ngtcp2_vec *ngtcp2_vec_init(ngtcp2_vec *vec, const uint8_t *base, size_t len); + +/* + * ngtcp2_vec_new allocates and initializes |*pvec| with given |data| + * of length |datalen|. This function allocates memory for |*pvec| + * and the given data with a single allocation, and the contents + * pointed by |data| is copied into the allocated memory space. To + * free the allocated memory, call ngtcp2_vec_del. + */ +int ngtcp2_vec_new(ngtcp2_vec **pvec, const uint8_t *data, size_t datalen, + const ngtcp2_mem *mem); + +/* + * ngtcp2_vec_del frees the memory allocated by |vec| which is + * allocated and initialized by ngtcp2_vec_new. + */ +void ngtcp2_vec_del(ngtcp2_vec *vec, const ngtcp2_mem *mem); + +/* + * ngtcp2_vec_len returns the sum of length in |vec| of |n| elements. + */ +uint64_t ngtcp2_vec_len(const ngtcp2_vec *vec, size_t n); + +/* + * ngtcp2_vec_len_varint is similar to ngtcp2_vec_len, but it returns + * -1 if the sum of the length exceeds NGTCP2_MAX_VARINT. + */ +int64_t ngtcp2_vec_len_varint(const ngtcp2_vec *vec, size_t n); + +/* + * ngtcp2_vec_split splits |src| at the data position where + * ngtcp2_vec_len(|src|) does not exceed |left| bytes. The removed + * vectors are moved to |dst|. The existing elements in |dst| are + * moved forward to make up a space. The |maxcnt| is the maximum + * number of elements which |dst| array can contain. The caller must + * set |*psrccnt| to the number of elements of |src|. Similarly, the + * caller must set |*pdstcnt| to the number of elements of |dst|. The + * split does not necessarily occur at the boundary of ngtcp2_vec + * object. After split has done, this function updates |*psrccnt| and + * |*pdstcnt|. This function returns the number of bytes moved from + * |src| to |dst|. If split cannot be made because doing so exceeds + * |maxcnt|, this function returns -1. + */ +ngtcp2_ssize ngtcp2_vec_split(ngtcp2_vec *dst, size_t *pdstcnt, ngtcp2_vec *src, + size_t *psrccnt, size_t left, size_t maxcnt); + +/* + * ngtcp2_vec_merge merges |src| into |dst| by moving at most |left| + * bytes from |src|. The |maxcnt| is the maximum number of elements + * which |dst| array can contain. The caller must set |*pdstcnt| to + * the number of elements of |dst|. Similarly, the caller must set + * |*psrccnt| to the number of elements of |src|. After merge has + * done, this function updates |*psrccnt| and |*pdstcnt|. This + * function returns the number of bytes moved from |src| to |dst|. + */ +size_t ngtcp2_vec_merge(ngtcp2_vec *dst, size_t *pdstcnt, ngtcp2_vec *src, + size_t *psrccnt, size_t left, size_t maxcnt); + +/* + * ngtcp2_vec_copy_at_most copies |src| of length |srccnt| to |dst| of + * length |dstcnt|. The total number of bytes which the copied + * ngtcp2_vec refers to is at most |left|. The empty elements in + * |src| are ignored. This function returns the number of elements + * copied. + */ +size_t ngtcp2_vec_copy_at_most(ngtcp2_vec *dst, size_t dstcnt, + const ngtcp2_vec *src, size_t srccnt, + size_t left); + +/* + * ngtcp2_vec_copy copies |src| of length |cnt| to |dst|. |dst| must + * have sufficient capacity. + */ +void ngtcp2_vec_copy(ngtcp2_vec *dst, const ngtcp2_vec *src, size_t cnt); + +#endif /* !defined(NGTCP2_VEC_H) */ diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_version.c b/contrib/libs/ngtcp2/lib/ngtcp2_version.c new file mode 100644 index 0000000000..d2557e9ef8 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_version.c @@ -0,0 +1,39 @@ +/* + * ngtcp2 + * + * Copyright (c) 2019 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +static ngtcp2_info version = {NGTCP2_VERSION_AGE, NGTCP2_VERSION_NUM, + NGTCP2_VERSION}; + +const ngtcp2_info *ngtcp2_version(int least_version) { + if (least_version > NGTCP2_VERSION_NUM) { + return NULL; + } + return &version; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_window_filter.c b/contrib/libs/ngtcp2/lib/ngtcp2_window_filter.c new file mode 100644 index 0000000000..39f3d408a7 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_window_filter.c @@ -0,0 +1,116 @@ +/* + * ngtcp2 + * + * Copyright (c) 2021 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * Translated to C from the original C++ code + * https://quiche.googlesource.com/quiche/+/5be974e29f7e71a196e726d6e2272676d33ab77d/quic/core/congestion_control/windowed_filter.h + * with the following license: + * + * // Copyright (c) 2016 The Chromium Authors. All rights reserved. + * // Use of this source code is governed by a BSD-style license that can be + * // found in the LICENSE file. + */ +#include "ngtcp2_window_filter.h" + +#include <string.h> + +void ngtcp2_window_filter_init(ngtcp2_window_filter *wf, + uint64_t window_length) { + wf->window_length = window_length; + memset(wf->estimates, 0xff, sizeof(wf->estimates)); +} + +void ngtcp2_window_filter_update(ngtcp2_window_filter *wf, uint64_t new_sample, + uint64_t new_time) { + /* Reset all estimates if they have not yet been initialized, if new + sample is a new best, or if the newest recorded estimate is too + old. */ + if (wf->estimates[0].sample == UINT64_MAX || + new_sample > wf->estimates[0].sample || + new_time - wf->estimates[2].time > wf->window_length) { + ngtcp2_window_filter_reset(wf, new_sample, new_time); + return; + } + + if (new_sample > wf->estimates[1].sample) { + wf->estimates[1].sample = new_sample; + wf->estimates[1].time = new_time; + wf->estimates[2] = wf->estimates[1]; + } else if (new_sample > wf->estimates[2].sample) { + wf->estimates[2].sample = new_sample; + wf->estimates[2].time = new_time; + } + + /* Expire and update estimates as necessary. */ + if (new_time - wf->estimates[0].time > wf->window_length) { + /* The best estimate hasn't been updated for an entire window, so + promote second and third best estimates. */ + wf->estimates[0] = wf->estimates[1]; + wf->estimates[1] = wf->estimates[2]; + wf->estimates[2].sample = new_sample; + wf->estimates[2].time = new_time; + + /* Need to iterate one more time. Check if the new best estimate + is outside the window as well, since it may also have been + recorded a long time ago. Don't need to iterate once more + since we cover that case at the beginning of the method. */ + if (new_time - wf->estimates[0].time > wf->window_length) { + wf->estimates[0] = wf->estimates[1]; + wf->estimates[1] = wf->estimates[2]; + } + return; + } + + if (wf->estimates[1].sample == wf->estimates[0].sample && + new_time - wf->estimates[1].time > wf->window_length >> 2) { + /* A quarter of the window has passed without a better sample, so + the second-best estimate is taken from the second quarter of + the window. */ + wf->estimates[2].sample = new_sample; + wf->estimates[2].time = new_time; + wf->estimates[1] = wf->estimates[2]; + return; + } + + if (wf->estimates[2].sample == wf->estimates[1].sample && + new_time - wf->estimates[2].time > wf->window_length >> 1) { + /* We've passed a half of the window without a better estimate, so + take a third-best estimate from the second half of the + window. */ + wf->estimates[2].sample = new_sample; + wf->estimates[2].time = new_time; + } +} + +void ngtcp2_window_filter_reset(ngtcp2_window_filter *wf, uint64_t new_sample, + uint64_t new_time) { + wf->estimates[0].sample = new_sample; + wf->estimates[0].time = new_time; + wf->estimates[1] = wf->estimates[2] = wf->estimates[0]; +} + +uint64_t ngtcp2_window_filter_get_best(ngtcp2_window_filter *wf) { + return wf->estimates[0].sample; +} diff --git a/contrib/libs/ngtcp2/lib/ngtcp2_window_filter.h b/contrib/libs/ngtcp2/lib/ngtcp2_window_filter.h new file mode 100644 index 0000000000..c90a9fdb90 --- /dev/null +++ b/contrib/libs/ngtcp2/lib/ngtcp2_window_filter.h @@ -0,0 +1,65 @@ +/* + * ngtcp2 + * + * Copyright (c) 2021 ngtcp2 contributors + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * Translated to C from the original C++ code + * https://quiche.googlesource.com/quiche/+/5be974e29f7e71a196e726d6e2272676d33ab77d/quic/core/congestion_control/windowed_filter.h + * with the following license: + * + * // Copyright (c) 2016 The Chromium Authors. All rights reserved. + * // Use of this source code is governed by a BSD-style license that can be + * // found in the LICENSE file. + */ +#ifndef NGTCP2_WINDOW_FILTER_H +#define NGTCP2_WINDOW_FILTER_H + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* defined(HAVE_CONFIG_H) */ + +#include <ngtcp2/ngtcp2.h> + +typedef struct ngtcp2_window_filter_sample { + uint64_t sample; + uint64_t time; +} ngtcp2_window_filter_sample; + +typedef struct ngtcp2_window_filter { + uint64_t window_length; + ngtcp2_window_filter_sample estimates[3]; +} ngtcp2_window_filter; + +void ngtcp2_window_filter_init(ngtcp2_window_filter *wf, + uint64_t window_length); + +void ngtcp2_window_filter_update(ngtcp2_window_filter *wf, uint64_t new_sample, + uint64_t new_time); + +void ngtcp2_window_filter_reset(ngtcp2_window_filter *wf, uint64_t new_sample, + uint64_t new_time); + +uint64_t ngtcp2_window_filter_get_best(ngtcp2_window_filter *wf); + +#endif /* !defined(NGTCP2_WINDOW_FILTER_H) */ diff --git a/contrib/libs/ngtcp2/patches/staticlib.patch b/contrib/libs/ngtcp2/patches/staticlib.patch new file mode 100644 index 0000000000..5c90b20e1d --- /dev/null +++ b/contrib/libs/ngtcp2/patches/staticlib.patch @@ -0,0 +1,11 @@ +--- a/lib/includes/ngtcp2/ngtcp2.h ++++ b/lib/includes/ngtcp2/ngtcp2.h +@@ -64,7 +64,7 @@ + + #include <ngtcp2/version.h> + +-#ifdef NGTCP2_STATICLIB ++#if 1 + # define NGTCP2_EXTERN + #elif defined(WIN32) + # ifdef BUILDING_NGTCP2 diff --git a/contrib/libs/ngtcp2/ya.make b/contrib/libs/ngtcp2/ya.make new file mode 100644 index 0000000000..c1c7b88d78 --- /dev/null +++ b/contrib/libs/ngtcp2/ya.make @@ -0,0 +1,80 @@ +# Generated by devtools/yamaker from nixpkgs 22.11. + +LIBRARY() + +VERSION(1.8.1) + +ORIGINAL_SOURCE(https://github.com/ngtcp2/ngtcp2/releases/download/v1.8.1/ngtcp2-1.8.1.tar.xz) + +LICENSE( + BSD-3-Clause AND + FSFAP AND + MIT +) + +LICENSE_TEXTS(.yandex_meta/licenses.list.txt) + +PEERDIR( + contrib/libs/openssl +) + +ADDINCL( + GLOBAL contrib/libs/ngtcp2/lib/includes + contrib/libs/ngtcp2 +) + +NO_COMPILER_WARNINGS() + +NO_RUNTIME() + +CFLAGS( + -DBUILDING_NGTCP2 + -DHAVE_CONFIG_H +) + +SRCS( + lib/ngtcp2_acktr.c + lib/ngtcp2_addr.c + lib/ngtcp2_balloc.c + lib/ngtcp2_bbr.c + lib/ngtcp2_buf.c + lib/ngtcp2_cc.c + lib/ngtcp2_cid.c + lib/ngtcp2_conn.c + lib/ngtcp2_conv.c + lib/ngtcp2_crypto.c + lib/ngtcp2_crypto_quictls.c + lib/ngtcp2_crypto_shared.c + lib/ngtcp2_err.c + lib/ngtcp2_frame_chain.c + lib/ngtcp2_gaptr.c + lib/ngtcp2_idtr.c + lib/ngtcp2_ksl.c + lib/ngtcp2_log.c + lib/ngtcp2_map.c + lib/ngtcp2_mem.c + lib/ngtcp2_objalloc.c + lib/ngtcp2_opl.c + lib/ngtcp2_path.c + lib/ngtcp2_pkt.c + lib/ngtcp2_pmtud.c + lib/ngtcp2_ppe.c + lib/ngtcp2_pq.c + lib/ngtcp2_pv.c + lib/ngtcp2_qlog.c + lib/ngtcp2_range.c + lib/ngtcp2_ringbuf.c + lib/ngtcp2_rob.c + lib/ngtcp2_rst.c + lib/ngtcp2_rtb.c + lib/ngtcp2_settings.c + lib/ngtcp2_str.c + lib/ngtcp2_strm.c + lib/ngtcp2_transport_params.c + lib/ngtcp2_unreachable.c + lib/ngtcp2_vec.c + lib/ngtcp2_version.c + lib/ngtcp2_window_filter.c +) + +END() |