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#ifndef HEADER_CURL_VTLS_INT_H
#define HEADER_CURL_VTLS_INT_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "curl_setup.h"
#include "cfilters.h"
#include "urldata.h"
#ifdef USE_SSL
/* see https://www.iana.org/assignments/tls-extensiontype-values/ */
#define ALPN_HTTP_1_1_LENGTH 8
#define ALPN_HTTP_1_1 "http/1.1"
#define ALPN_HTTP_1_0_LENGTH 8
#define ALPN_HTTP_1_0 "http/1.0"
#define ALPN_H2_LENGTH 2
#define ALPN_H2 "h2"
#define ALPN_H3_LENGTH 2
#define ALPN_H3 "h3"
/* conservative sizes on the ALPN entries and count we are handling,
* we can increase these if we ever feel the need or have to accommodate
* ALPN strings from the "outside". */
#define ALPN_NAME_MAX 10
#define ALPN_ENTRIES_MAX 3
#define ALPN_PROTO_BUF_MAX (ALPN_ENTRIES_MAX * (ALPN_NAME_MAX + 1))
struct alpn_spec {
const char entries[ALPN_ENTRIES_MAX][ALPN_NAME_MAX];
size_t count; /* number of entries */
};
struct alpn_proto_buf {
unsigned char data[ALPN_PROTO_BUF_MAX];
int len;
};
CURLcode Curl_alpn_to_proto_buf(struct alpn_proto_buf *buf,
const struct alpn_spec *spec);
CURLcode Curl_alpn_to_proto_str(struct alpn_proto_buf *buf,
const struct alpn_spec *spec);
CURLcode Curl_alpn_set_negotiated(struct Curl_cfilter *cf,
struct Curl_easy *data,
const unsigned char *proto,
size_t proto_len);
/* Information in each SSL cfilter context: cf->ctx */
struct ssl_connect_data {
ssl_connection_state state;
ssl_connect_state connecting_state;
char *hostname; /* hostname for verification */
char *dispname; /* display version of hostname */
const struct alpn_spec *alpn; /* ALPN to use or NULL for none */
void *backend; /* vtls backend specific props */
struct cf_call_data call_data; /* data handle used in current call */
struct curltime handshake_done; /* time when handshake finished */
int port; /* remote port at origin */
BIT(use_alpn); /* if ALPN shall be used in handshake */
};
#undef CF_CTX_CALL_DATA
#define CF_CTX_CALL_DATA(cf) \
((struct ssl_connect_data *)(cf)->ctx)->call_data
/* Definitions for SSL Implementations */
struct Curl_ssl {
/*
* This *must* be the first entry to allow returning the list of available
* backends in curl_global_sslset().
*/
curl_ssl_backend info;
unsigned int supports; /* bitfield, see above */
size_t sizeof_ssl_backend_data;
int (*init)(void);
void (*cleanup)(void);
size_t (*version)(char *buffer, size_t size);
int (*check_cxn)(struct Curl_cfilter *cf, struct Curl_easy *data);
int (*shut_down)(struct Curl_cfilter *cf,
struct Curl_easy *data);
bool (*data_pending)(struct Curl_cfilter *cf,
const struct Curl_easy *data);
/* return 0 if a find random is filled in */
CURLcode (*random)(struct Curl_easy *data, unsigned char *entropy,
size_t length);
bool (*cert_status_request)(void);
CURLcode (*connect_blocking)(struct Curl_cfilter *cf,
struct Curl_easy *data);
CURLcode (*connect_nonblocking)(struct Curl_cfilter *cf,
struct Curl_easy *data,
bool *done);
/* If the SSL backend wants to read or write on this connection during a
handshake, set socks[0] to the connection's FIRSTSOCKET, and return
a bitmap indicating read or write with GETSOCK_WRITESOCK(0) or
GETSOCK_READSOCK(0). Otherwise return GETSOCK_BLANK.
Mandatory. */
int (*get_select_socks)(struct Curl_cfilter *cf, struct Curl_easy *data,
curl_socket_t *socks);
void *(*get_internals)(struct ssl_connect_data *connssl, CURLINFO info);
void (*close)(struct Curl_cfilter *cf, struct Curl_easy *data);
void (*close_all)(struct Curl_easy *data);
void (*session_free)(void *ptr);
CURLcode (*set_engine)(struct Curl_easy *data, const char *engine);
CURLcode (*set_engine_default)(struct Curl_easy *data);
struct curl_slist *(*engines_list)(struct Curl_easy *data);
bool (*false_start)(void);
CURLcode (*sha256sum)(const unsigned char *input, size_t inputlen,
unsigned char *sha256sum, size_t sha256sumlen);
bool (*attach_data)(struct Curl_cfilter *cf, struct Curl_easy *data);
void (*detach_data)(struct Curl_cfilter *cf, struct Curl_easy *data);
void (*free_multi_ssl_backend_data)(struct multi_ssl_backend_data *mbackend);
ssize_t (*recv_plain)(struct Curl_cfilter *cf, struct Curl_easy *data,
char *buf, size_t len, CURLcode *code);
ssize_t (*send_plain)(struct Curl_cfilter *cf, struct Curl_easy *data,
const void *mem, size_t len, CURLcode *code);
};
extern const struct Curl_ssl *Curl_ssl;
int Curl_none_init(void);
void Curl_none_cleanup(void);
int Curl_none_shutdown(struct Curl_cfilter *cf, struct Curl_easy *data);
int Curl_none_check_cxn(struct Curl_cfilter *cf, struct Curl_easy *data);
CURLcode Curl_none_random(struct Curl_easy *data, unsigned char *entropy,
size_t length);
void Curl_none_close_all(struct Curl_easy *data);
void Curl_none_session_free(void *ptr);
bool Curl_none_data_pending(struct Curl_cfilter *cf,
const struct Curl_easy *data);
bool Curl_none_cert_status_request(void);
CURLcode Curl_none_set_engine(struct Curl_easy *data, const char *engine);
CURLcode Curl_none_set_engine_default(struct Curl_easy *data);
struct curl_slist *Curl_none_engines_list(struct Curl_easy *data);
bool Curl_none_false_start(void);
int Curl_ssl_get_select_socks(struct Curl_cfilter *cf, struct Curl_easy *data,
curl_socket_t *socks);
/**
* Get the ssl_config_data in `data` that is relevant for cfilter `cf`.
*/
struct ssl_config_data *Curl_ssl_cf_get_config(struct Curl_cfilter *cf,
struct Curl_easy *data);
/**
* Get the primary config relevant for the filter from its connection.
*/
struct ssl_primary_config *
Curl_ssl_cf_get_primary_config(struct Curl_cfilter *cf);
/**
* Get the first SSL filter in the chain starting with `cf`, or NULL.
*/
struct Curl_cfilter *Curl_ssl_cf_get_ssl(struct Curl_cfilter *cf);
/**
* Get the SSL filter below the given one or NULL if there is none.
*/
bool Curl_ssl_cf_is_proxy(struct Curl_cfilter *cf);
/* extract a session ID
* Sessionid mutex must be locked (see Curl_ssl_sessionid_lock).
* Caller must make sure that the ownership of returned sessionid object
* is properly taken (e.g. its refcount is incremented
* under sessionid mutex).
*/
bool Curl_ssl_getsessionid(struct Curl_cfilter *cf,
struct Curl_easy *data,
void **ssl_sessionid,
size_t *idsize); /* set 0 if unknown */
/* add a new session ID
* Sessionid mutex must be locked (see Curl_ssl_sessionid_lock).
* Caller must ensure that it has properly shared ownership of this sessionid
* object with cache (e.g. incrementing refcount on success)
*/
CURLcode Curl_ssl_addsessionid(struct Curl_cfilter *cf,
struct Curl_easy *data,
void *ssl_sessionid,
size_t idsize,
bool *added);
#include "openssl.h" /* OpenSSL versions */
#include "gtls.h" /* GnuTLS versions */
#include "nssg.h" /* NSS versions */
#include "gskit.h" /* Global Secure ToolKit versions */
#include "wolfssl.h" /* wolfSSL versions */
#include "schannel.h" /* Schannel SSPI version */
#include "sectransp.h" /* SecureTransport (Darwin) version */
#include "mbedtls.h" /* mbedTLS versions */
#include "bearssl.h" /* BearSSL versions */
#include "rustls.h" /* rustls versions */
#endif /* USE_SSL */
#endif /* HEADER_CURL_VTLS_INT_H */
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