aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libs/openssl/crypto/rand/randfile.c
diff options
context:
space:
mode:
authordeshevoy <deshevoy@yandex-team.ru>2022-02-10 16:46:56 +0300
committerDaniil Cherednik <dcherednik@yandex-team.ru>2022-02-10 16:46:56 +0300
commite988f30484abe5fdeedcc7a5d3c226c01a21800c (patch)
tree0a217b173aabb57b7e51f8a169989b1a3e0309fe /contrib/libs/openssl/crypto/rand/randfile.c
parent33ee501c05d3f24036ae89766a858930ae66c548 (diff)
downloadydb-e988f30484abe5fdeedcc7a5d3c226c01a21800c.tar.gz
Restoring authorship annotation for <deshevoy@yandex-team.ru>. Commit 1 of 2.
Diffstat (limited to 'contrib/libs/openssl/crypto/rand/randfile.c')
-rw-r--r--contrib/libs/openssl/crypto/rand/randfile.c622
1 files changed, 311 insertions, 311 deletions
diff --git a/contrib/libs/openssl/crypto/rand/randfile.c b/contrib/libs/openssl/crypto/rand/randfile.c
index 229ce864a3..3a03f993c3 100644
--- a/contrib/libs/openssl/crypto/rand/randfile.c
+++ b/contrib/libs/openssl/crypto/rand/randfile.c
@@ -1,314 +1,314 @@
-/*
+/*
* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the OpenSSL license (the "License"). You may not use
- * this file except in compliance with the License. You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
-
-#include "internal/cryptlib.h"
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <openssl/crypto.h>
-#include <openssl/rand.h>
-#include <openssl/rand_drbg.h>
-#include <openssl/buffer.h>
-
-#ifdef OPENSSL_SYS_VMS
-# include <unixio.h>
-#endif
-#include <sys/types.h>
-#ifndef OPENSSL_NO_POSIX_IO
-# include <sys/stat.h>
-# include <fcntl.h>
+ *
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include "internal/cryptlib.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl/crypto.h>
+#include <openssl/rand.h>
+#include <openssl/rand_drbg.h>
+#include <openssl/buffer.h>
+
+#ifdef OPENSSL_SYS_VMS
+# include <unixio.h>
+#endif
+#include <sys/types.h>
+#ifndef OPENSSL_NO_POSIX_IO
+# include <sys/stat.h>
+# include <fcntl.h>
# if defined(_WIN32) && !defined(_WIN32_WCE)
-# include <windows.h>
-# include <io.h>
-# define stat _stat
-# define chmod _chmod
-# define open _open
-# define fdopen _fdopen
-# define fstat _fstat
-# define fileno _fileno
-# endif
-#endif
-
-/*
- * Following should not be needed, and we could have been stricter
- * and demand S_IS*. But some systems just don't comply... Formally
- * below macros are "anatomically incorrect", because normally they
- * would look like ((m) & MASK == TYPE), but since MASK availability
- * is as questionable, we settle for this poor-man fallback...
- */
-# if !defined(S_ISREG)
-# define S_ISREG(m) ((m) & S_IFREG)
-# endif
-
-#define RAND_BUF_SIZE 1024
-#define RFILE ".rnd"
-
-#ifdef OPENSSL_SYS_VMS
-/*
- * __FILE_ptr32 is a type provided by DEC C headers (types.h specifically)
- * to make sure the FILE* is a 32-bit pointer no matter what. We know that
- * stdio functions return this type (a study of stdio.h proves it).
- *
- * This declaration is a nasty hack to get around vms' extension to fopen for
- * passing in sharing options being disabled by /STANDARD=ANSI89
- */
-static __FILE_ptr32 (*const vms_fopen)(const char *, const char *, ...) =
- (__FILE_ptr32 (*)(const char *, const char *, ...))fopen;
-# define VMS_OPEN_ATTRS \
- "shr=get,put,upd,del","ctx=bin,stm","rfm=stm","rat=none","mrs=0"
-# define openssl_fopen(fname, mode) vms_fopen((fname), (mode), VMS_OPEN_ATTRS)
-#endif
-
-/*
- * Note that these functions are intended for seed files only. Entropy
- * devices and EGD sockets are handled in rand_unix.c If |bytes| is
- * -1 read the complete file; otherwise read the specified amount.
- */
-int RAND_load_file(const char *file, long bytes)
-{
- /*
- * The load buffer size exceeds the chunk size by the comfortable amount
- * of 'RAND_DRBG_STRENGTH' bytes (not bits!). This is done on purpose
- * to avoid calling RAND_add() with a small final chunk. Instead, such
- * a small final chunk will be added together with the previous chunk
- * (unless it's the only one).
- */
-#define RAND_LOAD_BUF_SIZE (RAND_BUF_SIZE + RAND_DRBG_STRENGTH)
- unsigned char buf[RAND_LOAD_BUF_SIZE];
-
-#ifndef OPENSSL_NO_POSIX_IO
- struct stat sb;
-#endif
- int i, n, ret = 0;
- FILE *in;
-
- if (bytes == 0)
- return 0;
-
- if ((in = openssl_fopen(file, "rb")) == NULL) {
- RANDerr(RAND_F_RAND_LOAD_FILE, RAND_R_CANNOT_OPEN_FILE);
- ERR_add_error_data(2, "Filename=", file);
- return -1;
- }
-
-#ifndef OPENSSL_NO_POSIX_IO
- if (fstat(fileno(in), &sb) < 0) {
- RANDerr(RAND_F_RAND_LOAD_FILE, RAND_R_INTERNAL_ERROR);
- ERR_add_error_data(2, "Filename=", file);
- fclose(in);
- return -1;
- }
-
- if (bytes < 0) {
- if (S_ISREG(sb.st_mode))
- bytes = sb.st_size;
- else
- bytes = RAND_DRBG_STRENGTH;
- }
-#endif
- /*
- * On VMS, setbuf() will only take 32-bit pointers, and a compilation
- * with /POINTER_SIZE=64 will give off a MAYLOSEDATA2 warning here.
- * However, we trust that the C RTL will never give us a FILE pointer
- * above the first 4 GB of memory, so we simply turn off the warning
- * temporarily.
- */
-#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
-# pragma environment save
-# pragma message disable maylosedata2
-#endif
- /*
- * Don't buffer, because even if |file| is regular file, we have
- * no control over the buffer, so why would we want a copy of its
- * contents lying around?
- */
- setbuf(in, NULL);
-#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
-# pragma environment restore
-#endif
-
- for ( ; ; ) {
- if (bytes > 0)
- n = (bytes <= RAND_LOAD_BUF_SIZE) ? (int)bytes : RAND_BUF_SIZE;
- else
- n = RAND_LOAD_BUF_SIZE;
- i = fread(buf, 1, n, in);
-#ifdef EINTR
- if (ferror(in) && errno == EINTR){
- clearerr(in);
- if (i == 0)
- continue;
- }
-#endif
- if (i == 0)
- break;
-
- RAND_add(buf, i, (double)i);
- ret += i;
-
- /* If given a bytecount, and we did it, break. */
- if (bytes > 0 && (bytes -= i) <= 0)
- break;
- }
-
- OPENSSL_cleanse(buf, sizeof(buf));
- fclose(in);
- if (!RAND_status()) {
- RANDerr(RAND_F_RAND_LOAD_FILE, RAND_R_RESEED_ERROR);
- ERR_add_error_data(2, "Filename=", file);
- return -1;
- }
-
- return ret;
-}
-
-int RAND_write_file(const char *file)
-{
- unsigned char buf[RAND_BUF_SIZE];
- int ret = -1;
- FILE *out = NULL;
-#ifndef OPENSSL_NO_POSIX_IO
- struct stat sb;
-
- if (stat(file, &sb) >= 0 && !S_ISREG(sb.st_mode)) {
- RANDerr(RAND_F_RAND_WRITE_FILE, RAND_R_NOT_A_REGULAR_FILE);
- ERR_add_error_data(2, "Filename=", file);
- return -1;
- }
-#endif
-
- /* Collect enough random data. */
- if (RAND_priv_bytes(buf, (int)sizeof(buf)) != 1)
- return -1;
-
-#if defined(O_CREAT) && !defined(OPENSSL_NO_POSIX_IO) && \
- !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_WINDOWS)
- {
-# ifndef O_BINARY
-# define O_BINARY 0
-# endif
- /*
- * chmod(..., 0600) is too late to protect the file, permissions
- * should be restrictive from the start
- */
- int fd = open(file, O_WRONLY | O_CREAT | O_BINARY, 0600);
- if (fd != -1)
- out = fdopen(fd, "wb");
- }
-#endif
-
-#ifdef OPENSSL_SYS_VMS
- /*
- * VMS NOTE: Prior versions of this routine created a _new_ version of
- * the rand file for each call into this routine, then deleted all
- * existing versions named ;-1, and finally renamed the current version
- * as ';1'. Under concurrent usage, this resulted in an RMS race
- * condition in rename() which could orphan files (see vms message help
- * for RMS$_REENT). With the fopen() calls below, openssl/VMS now shares
- * the top-level version of the rand file. Note that there may still be
- * conditions where the top-level rand file is locked. If so, this code
- * will then create a new version of the rand file. Without the delete
- * and rename code, this can result in ascending file versions that stop
- * at version 32767, and this routine will then return an error. The
- * remedy for this is to recode the calling application to avoid
- * concurrent use of the rand file, or synchronize usage at the
- * application level. Also consider whether or not you NEED a persistent
- * rand file in a concurrent use situation.
- */
- out = openssl_fopen(file, "rb+");
-#endif
-
- if (out == NULL)
- out = openssl_fopen(file, "wb");
- if (out == NULL) {
- RANDerr(RAND_F_RAND_WRITE_FILE, RAND_R_CANNOT_OPEN_FILE);
- ERR_add_error_data(2, "Filename=", file);
- return -1;
- }
-
-#if !defined(NO_CHMOD) && !defined(OPENSSL_NO_POSIX_IO)
- /*
- * Yes it's late to do this (see above comment), but better than nothing.
- */
- chmod(file, 0600);
-#endif
-
- ret = fwrite(buf, 1, RAND_BUF_SIZE, out);
- fclose(out);
- OPENSSL_cleanse(buf, RAND_BUF_SIZE);
- return ret;
-}
-
-const char *RAND_file_name(char *buf, size_t size)
-{
- char *s = NULL;
- size_t len;
- int use_randfile = 1;
-
+# include <windows.h>
+# include <io.h>
+# define stat _stat
+# define chmod _chmod
+# define open _open
+# define fdopen _fdopen
+# define fstat _fstat
+# define fileno _fileno
+# endif
+#endif
+
+/*
+ * Following should not be needed, and we could have been stricter
+ * and demand S_IS*. But some systems just don't comply... Formally
+ * below macros are "anatomically incorrect", because normally they
+ * would look like ((m) & MASK == TYPE), but since MASK availability
+ * is as questionable, we settle for this poor-man fallback...
+ */
+# if !defined(S_ISREG)
+# define S_ISREG(m) ((m) & S_IFREG)
+# endif
+
+#define RAND_BUF_SIZE 1024
+#define RFILE ".rnd"
+
+#ifdef OPENSSL_SYS_VMS
+/*
+ * __FILE_ptr32 is a type provided by DEC C headers (types.h specifically)
+ * to make sure the FILE* is a 32-bit pointer no matter what. We know that
+ * stdio functions return this type (a study of stdio.h proves it).
+ *
+ * This declaration is a nasty hack to get around vms' extension to fopen for
+ * passing in sharing options being disabled by /STANDARD=ANSI89
+ */
+static __FILE_ptr32 (*const vms_fopen)(const char *, const char *, ...) =
+ (__FILE_ptr32 (*)(const char *, const char *, ...))fopen;
+# define VMS_OPEN_ATTRS \
+ "shr=get,put,upd,del","ctx=bin,stm","rfm=stm","rat=none","mrs=0"
+# define openssl_fopen(fname, mode) vms_fopen((fname), (mode), VMS_OPEN_ATTRS)
+#endif
+
+/*
+ * Note that these functions are intended for seed files only. Entropy
+ * devices and EGD sockets are handled in rand_unix.c If |bytes| is
+ * -1 read the complete file; otherwise read the specified amount.
+ */
+int RAND_load_file(const char *file, long bytes)
+{
+ /*
+ * The load buffer size exceeds the chunk size by the comfortable amount
+ * of 'RAND_DRBG_STRENGTH' bytes (not bits!). This is done on purpose
+ * to avoid calling RAND_add() with a small final chunk. Instead, such
+ * a small final chunk will be added together with the previous chunk
+ * (unless it's the only one).
+ */
+#define RAND_LOAD_BUF_SIZE (RAND_BUF_SIZE + RAND_DRBG_STRENGTH)
+ unsigned char buf[RAND_LOAD_BUF_SIZE];
+
+#ifndef OPENSSL_NO_POSIX_IO
+ struct stat sb;
+#endif
+ int i, n, ret = 0;
+ FILE *in;
+
+ if (bytes == 0)
+ return 0;
+
+ if ((in = openssl_fopen(file, "rb")) == NULL) {
+ RANDerr(RAND_F_RAND_LOAD_FILE, RAND_R_CANNOT_OPEN_FILE);
+ ERR_add_error_data(2, "Filename=", file);
+ return -1;
+ }
+
+#ifndef OPENSSL_NO_POSIX_IO
+ if (fstat(fileno(in), &sb) < 0) {
+ RANDerr(RAND_F_RAND_LOAD_FILE, RAND_R_INTERNAL_ERROR);
+ ERR_add_error_data(2, "Filename=", file);
+ fclose(in);
+ return -1;
+ }
+
+ if (bytes < 0) {
+ if (S_ISREG(sb.st_mode))
+ bytes = sb.st_size;
+ else
+ bytes = RAND_DRBG_STRENGTH;
+ }
+#endif
+ /*
+ * On VMS, setbuf() will only take 32-bit pointers, and a compilation
+ * with /POINTER_SIZE=64 will give off a MAYLOSEDATA2 warning here.
+ * However, we trust that the C RTL will never give us a FILE pointer
+ * above the first 4 GB of memory, so we simply turn off the warning
+ * temporarily.
+ */
+#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
+# pragma environment save
+# pragma message disable maylosedata2
+#endif
+ /*
+ * Don't buffer, because even if |file| is regular file, we have
+ * no control over the buffer, so why would we want a copy of its
+ * contents lying around?
+ */
+ setbuf(in, NULL);
+#if defined(OPENSSL_SYS_VMS) && defined(__DECC)
+# pragma environment restore
+#endif
+
+ for ( ; ; ) {
+ if (bytes > 0)
+ n = (bytes <= RAND_LOAD_BUF_SIZE) ? (int)bytes : RAND_BUF_SIZE;
+ else
+ n = RAND_LOAD_BUF_SIZE;
+ i = fread(buf, 1, n, in);
+#ifdef EINTR
+ if (ferror(in) && errno == EINTR){
+ clearerr(in);
+ if (i == 0)
+ continue;
+ }
+#endif
+ if (i == 0)
+ break;
+
+ RAND_add(buf, i, (double)i);
+ ret += i;
+
+ /* If given a bytecount, and we did it, break. */
+ if (bytes > 0 && (bytes -= i) <= 0)
+ break;
+ }
+
+ OPENSSL_cleanse(buf, sizeof(buf));
+ fclose(in);
+ if (!RAND_status()) {
+ RANDerr(RAND_F_RAND_LOAD_FILE, RAND_R_RESEED_ERROR);
+ ERR_add_error_data(2, "Filename=", file);
+ return -1;
+ }
+
+ return ret;
+}
+
+int RAND_write_file(const char *file)
+{
+ unsigned char buf[RAND_BUF_SIZE];
+ int ret = -1;
+ FILE *out = NULL;
+#ifndef OPENSSL_NO_POSIX_IO
+ struct stat sb;
+
+ if (stat(file, &sb) >= 0 && !S_ISREG(sb.st_mode)) {
+ RANDerr(RAND_F_RAND_WRITE_FILE, RAND_R_NOT_A_REGULAR_FILE);
+ ERR_add_error_data(2, "Filename=", file);
+ return -1;
+ }
+#endif
+
+ /* Collect enough random data. */
+ if (RAND_priv_bytes(buf, (int)sizeof(buf)) != 1)
+ return -1;
+
+#if defined(O_CREAT) && !defined(OPENSSL_NO_POSIX_IO) && \
+ !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_WINDOWS)
+ {
+# ifndef O_BINARY
+# define O_BINARY 0
+# endif
+ /*
+ * chmod(..., 0600) is too late to protect the file, permissions
+ * should be restrictive from the start
+ */
+ int fd = open(file, O_WRONLY | O_CREAT | O_BINARY, 0600);
+ if (fd != -1)
+ out = fdopen(fd, "wb");
+ }
+#endif
+
+#ifdef OPENSSL_SYS_VMS
+ /*
+ * VMS NOTE: Prior versions of this routine created a _new_ version of
+ * the rand file for each call into this routine, then deleted all
+ * existing versions named ;-1, and finally renamed the current version
+ * as ';1'. Under concurrent usage, this resulted in an RMS race
+ * condition in rename() which could orphan files (see vms message help
+ * for RMS$_REENT). With the fopen() calls below, openssl/VMS now shares
+ * the top-level version of the rand file. Note that there may still be
+ * conditions where the top-level rand file is locked. If so, this code
+ * will then create a new version of the rand file. Without the delete
+ * and rename code, this can result in ascending file versions that stop
+ * at version 32767, and this routine will then return an error. The
+ * remedy for this is to recode the calling application to avoid
+ * concurrent use of the rand file, or synchronize usage at the
+ * application level. Also consider whether or not you NEED a persistent
+ * rand file in a concurrent use situation.
+ */
+ out = openssl_fopen(file, "rb+");
+#endif
+
+ if (out == NULL)
+ out = openssl_fopen(file, "wb");
+ if (out == NULL) {
+ RANDerr(RAND_F_RAND_WRITE_FILE, RAND_R_CANNOT_OPEN_FILE);
+ ERR_add_error_data(2, "Filename=", file);
+ return -1;
+ }
+
+#if !defined(NO_CHMOD) && !defined(OPENSSL_NO_POSIX_IO)
+ /*
+ * Yes it's late to do this (see above comment), but better than nothing.
+ */
+ chmod(file, 0600);
+#endif
+
+ ret = fwrite(buf, 1, RAND_BUF_SIZE, out);
+ fclose(out);
+ OPENSSL_cleanse(buf, RAND_BUF_SIZE);
+ return ret;
+}
+
+const char *RAND_file_name(char *buf, size_t size)
+{
+ char *s = NULL;
+ size_t len;
+ int use_randfile = 1;
+
#if defined(_WIN32) && defined(CP_UTF8) && !defined(_WIN32_WCE)
- DWORD envlen;
- WCHAR *var;
-
- /* Look up various environment variables. */
- if ((envlen = GetEnvironmentVariableW(var = L"RANDFILE", NULL, 0)) == 0) {
- use_randfile = 0;
- if ((envlen = GetEnvironmentVariableW(var = L"HOME", NULL, 0)) == 0
- && (envlen = GetEnvironmentVariableW(var = L"USERPROFILE",
- NULL, 0)) == 0)
- envlen = GetEnvironmentVariableW(var = L"SYSTEMROOT", NULL, 0);
- }
-
- /* If we got a value, allocate space to hold it and then get it. */
- if (envlen != 0) {
- int sz;
- WCHAR *val = _alloca(envlen * sizeof(WCHAR));
-
- if (GetEnvironmentVariableW(var, val, envlen) < envlen
- && (sz = WideCharToMultiByte(CP_UTF8, 0, val, -1, NULL, 0,
- NULL, NULL)) != 0) {
- s = _alloca(sz);
- if (WideCharToMultiByte(CP_UTF8, 0, val, -1, s, sz,
- NULL, NULL) == 0)
- s = NULL;
- }
- }
-#else
- if ((s = ossl_safe_getenv("RANDFILE")) == NULL || *s == '\0') {
- use_randfile = 0;
- s = ossl_safe_getenv("HOME");
- }
-#endif
-
-#ifdef DEFAULT_HOME
- if (!use_randfile && s == NULL)
- s = DEFAULT_HOME;
-#endif
- if (s == NULL || *s == '\0')
- return NULL;
-
- len = strlen(s);
- if (use_randfile) {
- if (len + 1 >= size)
- return NULL;
- strcpy(buf, s);
- } else {
- if (len + 1 + strlen(RFILE) + 1 >= size)
- return NULL;
- strcpy(buf, s);
-#ifndef OPENSSL_SYS_VMS
- strcat(buf, "/");
-#endif
- strcat(buf, RFILE);
- }
-
- return buf;
-}
+ DWORD envlen;
+ WCHAR *var;
+
+ /* Look up various environment variables. */
+ if ((envlen = GetEnvironmentVariableW(var = L"RANDFILE", NULL, 0)) == 0) {
+ use_randfile = 0;
+ if ((envlen = GetEnvironmentVariableW(var = L"HOME", NULL, 0)) == 0
+ && (envlen = GetEnvironmentVariableW(var = L"USERPROFILE",
+ NULL, 0)) == 0)
+ envlen = GetEnvironmentVariableW(var = L"SYSTEMROOT", NULL, 0);
+ }
+
+ /* If we got a value, allocate space to hold it and then get it. */
+ if (envlen != 0) {
+ int sz;
+ WCHAR *val = _alloca(envlen * sizeof(WCHAR));
+
+ if (GetEnvironmentVariableW(var, val, envlen) < envlen
+ && (sz = WideCharToMultiByte(CP_UTF8, 0, val, -1, NULL, 0,
+ NULL, NULL)) != 0) {
+ s = _alloca(sz);
+ if (WideCharToMultiByte(CP_UTF8, 0, val, -1, s, sz,
+ NULL, NULL) == 0)
+ s = NULL;
+ }
+ }
+#else
+ if ((s = ossl_safe_getenv("RANDFILE")) == NULL || *s == '\0') {
+ use_randfile = 0;
+ s = ossl_safe_getenv("HOME");
+ }
+#endif
+
+#ifdef DEFAULT_HOME
+ if (!use_randfile && s == NULL)
+ s = DEFAULT_HOME;
+#endif
+ if (s == NULL || *s == '\0')
+ return NULL;
+
+ len = strlen(s);
+ if (use_randfile) {
+ if (len + 1 >= size)
+ return NULL;
+ strcpy(buf, s);
+ } else {
+ if (len + 1 + strlen(RFILE) + 1 >= size)
+ return NULL;
+ strcpy(buf, s);
+#ifndef OPENSSL_SYS_VMS
+ strcat(buf, "/");
+#endif
+ strcat(buf, RFILE);
+ }
+
+ return buf;
+}