diff options
Diffstat (limited to 'thirdparty/openssl/crypto/rand/randfile.c')
-rw-r--r-- | thirdparty/openssl/crypto/rand/randfile.c | 372 |
1 files changed, 0 insertions, 372 deletions
diff --git a/thirdparty/openssl/crypto/rand/randfile.c b/thirdparty/openssl/crypto/rand/randfile.c deleted file mode 100644 index 728fd0a721..0000000000 --- a/thirdparty/openssl/crypto/rand/randfile.c +++ /dev/null @@ -1,372 +0,0 @@ -/* crypto/rand/randfile.c */ -/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) - * All rights reserved. - * - * This package is an SSL implementation written - * by Eric Young (eay@cryptsoft.com). - * The implementation was written so as to conform with Netscapes SSL. - * - * This library is free for commercial and non-commercial use as long as - * the following conditions are aheared to. The following conditions - * apply to all code found in this distribution, be it the RC4, RSA, - * lhash, DES, etc., code; not just the SSL code. The SSL documentation - * included with this distribution is covered by the same copyright terms - * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * - * Copyright remains Eric Young's, and as such any Copyright notices in - * the code are not to be removed. - * If this package is used in a product, Eric Young should be given attribution - * as the author of the parts of the library used. - * This can be in the form of a textual message at program startup or - * in documentation (online or textual) provided with the package. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * "This product includes cryptographic software written by - * Eric Young (eay@cryptsoft.com)" - * The word 'cryptographic' can be left out if the rouines from the library - * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from - * the apps directory (application code) you must include an acknowledgement: - * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * - * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * The licence and distribution terms for any publically available version or - * derivative of this code cannot be changed. i.e. this code cannot simply be - * copied and put under another distribution licence - * [including the GNU Public Licence.] - */ - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "e_os.h" -#include <openssl/crypto.h> -#include <openssl/rand.h> -#include <openssl/buffer.h> - -#ifdef OPENSSL_SYS_VMS -# include <unixio.h> -#endif -#ifndef NO_SYS_TYPES_H -# include <sys/types.h> -#endif -#ifndef OPENSSL_NO_POSIX_IO -# include <sys/stat.h> -# include <fcntl.h> -/* - * 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_ISBLK) -# if defined(_S_IFBLK) -# define S_ISBLK(m) ((m) & _S_IFBLK) -# elif defined(S_IFBLK) -# define S_ISBLK(m) ((m) & S_IFBLK) -# elif defined(_WIN32) -# define S_ISBLK(m) 0 /* no concept of block devices on Windows */ -# endif -# endif -# if !defined(S_ISCHR) -# if defined(_S_IFCHR) -# define S_ISCHR(m) ((m) & _S_IFCHR) -# elif defined(S_IFCHR) -# define S_ISCHR(m) ((m) & S_IFCHR) -# endif -# endif -#endif - -#ifdef _WIN32 -# define stat _stat -# define chmod _chmod -# define open _open -# define fdopen _fdopen -#endif - -#undef BUFSIZE -#define BUFSIZE 1024 -#define RAND_DATA 1024 - -#if (defined(OPENSSL_SYS_VMS) && (defined(__alpha) || defined(__ia64))) -/* - * This declaration is a nasty hack to get around vms' extension to fopen for - * passing in sharing options being disabled by our /STANDARD=ANSI89 - */ -static FILE *(*const vms_fopen)(const char *, const char *, ...) = - (FILE *(*)(const char *, const char *, ...))fopen; -# define VMS_OPEN_ATTRS "shr=get,put,upd,del","ctx=bin,stm","rfm=stm","rat=none","mrs=0" -#endif - -/* #define RFILE ".rnd" - defined in ../../e_os.h */ - -/* - * Note that these functions are intended for seed files only. Entropy - * devices and EGD sockets are handled in rand_unix.c - */ - -int RAND_load_file(const char *file, long bytes) -{ - /*- - * If bytes >= 0, read up to 'bytes' bytes. - * if bytes == -1, read complete file. - */ - - MS_STATIC unsigned char buf[BUFSIZE]; -#ifndef OPENSSL_NO_POSIX_IO - struct stat sb; -#endif - int i, ret = 0, n; -/* - * If setvbuf() is to be called, then the FILE pointer - * to it must be 32 bit. -*/ - -#if !defined OPENSSL_NO_SETVBUF_IONBF && defined(OPENSSL_SYS_VMS) && defined(__VMS_VER) && (__VMS_VER >= 70000000) - /* For 64-bit-->32 bit API Support*/ -#if __INITIAL_POINTER_SIZE == 64 -#pragma __required_pointer_size __save -#pragma __required_pointer_size 32 -#endif - FILE *in; /* setvbuf() requires 32-bit pointers */ -#if __INITIAL_POINTER_SIZE == 64 -#pragma __required_pointer_size __restore -#endif -#else - FILE *in; -#endif /* OPENSSL_SYS_VMS */ - - if (file == NULL) - return (0); - -#ifndef OPENSSL_NO_POSIX_IO -# ifdef PURIFY - /* - * struct stat can have padding and unused fields that may not be - * initialized in the call to stat(). We need to clear the entire - * structure before calling RAND_add() to avoid complaints from - * applications such as Valgrind. - */ - memset(&sb, 0, sizeof(sb)); -# endif - if (stat(file, &sb) < 0) - return (0); - RAND_add(&sb, sizeof(sb), 0.0); -#endif - if (bytes == 0) - return (ret); - -#ifdef OPENSSL_SYS_VMS - in = vms_fopen(file, "rb", VMS_OPEN_ATTRS); -#else - in = fopen(file, "rb"); -#endif - if (in == NULL) - goto err; -#if defined(S_ISBLK) && defined(S_ISCHR) && !defined(OPENSSL_NO_POSIX_IO) - if (S_ISBLK(sb.st_mode) || S_ISCHR(sb.st_mode)) { - /* - * this file is a device. we don't want read an infinite number of - * bytes from a random device, nor do we want to use buffered I/O - * because we will waste system entropy. - */ - bytes = (bytes == -1) ? 2048 : bytes; /* ok, is 2048 enough? */ -# ifndef OPENSSL_NO_SETVBUF_IONBF - setvbuf(in, NULL, _IONBF, 0); /* don't do buffered reads */ -# endif /* ndef OPENSSL_NO_SETVBUF_IONBF */ - } -#endif - for (;;) { - if (bytes > 0) - n = (bytes < BUFSIZE) ? (int)bytes : BUFSIZE; - else - n = BUFSIZE; - i = fread(buf, 1, n, in); - if (i <= 0) - break; -#ifdef PURIFY - RAND_add(buf, i, (double)i); -#else - /* even if n != i, use the full array */ - RAND_add(buf, n, (double)i); -#endif - ret += i; - if (bytes > 0) { - bytes -= n; - if (bytes <= 0) - break; - } - } - fclose(in); - OPENSSL_cleanse(buf, BUFSIZE); - err: - return (ret); -} - -int RAND_write_file(const char *file) -{ - unsigned char buf[BUFSIZE]; - int i, ret = 0, rand_err = 0; - FILE *out = NULL; - int n; -#ifndef OPENSSL_NO_POSIX_IO - struct stat sb; - - i = stat(file, &sb); - if (i != -1) { -# if defined(S_ISBLK) && defined(S_ISCHR) - if (S_ISBLK(sb.st_mode) || S_ISCHR(sb.st_mode)) { - /* - * this file is a device. we don't write back to it. we - * "succeed" on the assumption this is some sort of random - * device. Otherwise attempting to write to and chmod the device - * causes problems. - */ - return (1); - } -# endif - } -#endif - -#if defined(O_CREAT) && !defined(OPENSSL_NO_POSIX_IO) && !defined(OPENSSL_SYS_VMS) - { -# 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 - -#if (defined(OPENSSL_SYS_VMS) && (defined(__alpha) || defined(__ia64))) - /* - * 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 = vms_fopen(file, "rb+", VMS_OPEN_ATTRS); - if (out == NULL) - out = vms_fopen(file, "wb", VMS_OPEN_ATTRS); -#else - if (out == NULL) - out = fopen(file, "wb"); -#endif - if (out == NULL) - goto err; - -#ifndef NO_CHMOD - chmod(file, 0600); -#endif - n = RAND_DATA; - for (;;) { - i = (n > BUFSIZE) ? BUFSIZE : n; - n -= BUFSIZE; - if (RAND_bytes(buf, i) <= 0) - rand_err = 1; - i = fwrite(buf, 1, i, out); - if (i <= 0) { - ret = 0; - break; - } - ret += i; - if (n <= 0) - break; - } - - fclose(out); - OPENSSL_cleanse(buf, BUFSIZE); - err: - return (rand_err ? -1 : ret); -} - -const char *RAND_file_name(char *buf, size_t size) -{ - char *s = NULL; -#ifdef __OpenBSD__ - struct stat sb; -#endif - - if (OPENSSL_issetugid() == 0) - s = getenv("RANDFILE"); - if (s != NULL && *s && strlen(s) + 1 < size) { - if (BUF_strlcpy(buf, s, size) >= size) - return NULL; - } else { - if (OPENSSL_issetugid() == 0) - s = getenv("HOME"); -#ifdef DEFAULT_HOME - if (s == NULL) { - s = DEFAULT_HOME; - } -#endif - if (s && *s && strlen(s) + strlen(RFILE) + 2 < size) { - BUF_strlcpy(buf, s, size); -#ifndef OPENSSL_SYS_VMS - BUF_strlcat(buf, "/", size); -#endif - BUF_strlcat(buf, RFILE, size); - } else - buf[0] = '\0'; /* no file name */ - } - -#ifdef __OpenBSD__ - /* - * given that all random loads just fail if the file can't be seen on a - * stat, we stat the file we're returning, if it fails, use /dev/arandom - * instead. this allows the user to use their own source for good random - * data, but defaults to something hopefully decent if that isn't - * available. - */ - - if (!buf[0]) - if (BUF_strlcpy(buf, "/dev/arandom", size) >= size) { - return (NULL); - } - if (stat(buf, &sb) == -1) - if (BUF_strlcpy(buf, "/dev/arandom", size) >= size) { - return (NULL); - } -#endif - return (buf); -} |