diff options
Diffstat (limited to 'Cryptlib/OpenSSL/crypto/rand/randfile.c')
| -rw-r--r-- | Cryptlib/OpenSSL/crypto/rand/randfile.c | 276 |
1 files changed, 141 insertions, 135 deletions
diff --git a/Cryptlib/OpenSSL/crypto/rand/randfile.c b/Cryptlib/OpenSSL/crypto/rand/randfile.c index 15fa9dce..728fd0a7 100644 --- a/Cryptlib/OpenSSL/crypto/rand/randfile.c +++ b/Cryptlib/OpenSSL/crypto/rand/randfile.c @@ -1,19 +1,67 @@ -/* - * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. +/* 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)" * - * 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 + * 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 "internal/cryptlib.h" - #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> @@ -57,52 +105,23 @@ # define chmod _chmod # define open _open # define fdopen _fdopen -# define fstat _fstat -# define fileno _fileno #endif #undef BUFSIZE #define BUFSIZE 1024 #define RAND_DATA 1024 -#ifdef OPENSSL_SYS_VMS -/* - * Misc hacks needed for specific cases. - * - * __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 function return this type (a study of stdio.h proves it). - * Additionally, we create a similar char pointer type for the sake of - * vms_setbuf below. - */ -# if __INITIAL_POINTER_SIZE == 64 -# pragma pointer_size save -# pragma pointer_size 32 -typedef char *char_ptr32; -# pragma pointer_size restore -/* - * On VMS, setbuf() will only take 32-bit pointers, and a compilation - * with /POINTER_SIZE=64 will give off a MAYLOSEDATA2 warning here. - * Since we know that the FILE* really is a 32-bit pointer expanded to - * 64 bits, we also know it's safe to convert it back to a 32-bit pointer. - * As for the buffer parameter, we only use NULL here, so that passes as - * well... - */ -# define setbuf(fp,buf) (setbuf)((__FILE_ptr32)(fp), (char_ptr32)(buf)) -# endif - +#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 /STANDARD=ANSI89 + * passing in sharing options being disabled by our /STANDARD=ANSI89 */ -static __FILE_ptr32 (*const vms_fopen)(const char *, const char *, ...) = - (__FILE_ptr32 (*)(const char *, const char *, ...))fopen; +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" - -# define openssl_fopen(fname,mode) vms_fopen((fname), (mode), VMS_OPEN_ATTRS) #endif -#define RFILE ".rnd" +/* #define RFILE ".rnd" - defined in ../../e_os.h */ /* * Note that these functions are intended for seed files only. Entropy @@ -116,24 +135,35 @@ int RAND_load_file(const char *file, long bytes) * if bytes == -1, read complete file. */ - unsigned char buf[BUFSIZE]; + MS_STATIC unsigned char buf[BUFSIZE]; #ifndef OPENSSL_NO_POSIX_IO struct stat sb; #endif int i, ret = 0, n; - FILE *in = NULL; +/* + * 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; - - if (bytes == 0) - return ret; - - in = openssl_fopen(file, "rb"); - if (in == NULL) - goto err; + 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 @@ -141,11 +171,22 @@ int RAND_load_file(const char *file, long bytes) * applications such as Valgrind. */ memset(&sb, 0, sizeof(sb)); - if (fstat(fileno(in), &sb) < 0) - goto err; +# endif + if (stat(file, &sb) < 0) + return (0); RAND_add(&sb, sizeof(sb), 0.0); +#endif + if (bytes == 0) + return (ret); -# if defined(S_ISBLK) && defined(S_ISCHR) +#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 @@ -153,9 +194,10 @@ int RAND_load_file(const char *file, long bytes) * because we will waste system entropy. */ bytes = (bytes == -1) ? 2048 : bytes; /* ok, is 2048 enough? */ - setbuf(in, NULL); /* don't do buffered reads */ +# ifndef OPENSSL_NO_SETVBUF_IONBF + setvbuf(in, NULL, _IONBF, 0); /* don't do buffered reads */ +# endif /* ndef OPENSSL_NO_SETVBUF_IONBF */ } -# endif #endif for (;;) { if (bytes > 0) @@ -165,8 +207,12 @@ int RAND_load_file(const char *file, long bytes) 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; @@ -174,11 +220,10 @@ int RAND_load_file(const char *file, long bytes) break; } } + fclose(in); OPENSSL_cleanse(buf, BUFSIZE); err: - if (in != NULL) - fclose(in); - return ret; + return (ret); } int RAND_write_file(const char *file) @@ -190,15 +235,9 @@ int RAND_write_file(const char *file) #ifndef OPENSSL_NO_POSIX_IO struct stat sb; -# if defined(S_ISBLK) && defined(S_ISCHR) -# ifdef _WIN32 - /* - * Check for |file| being a driver as "ASCII-safe" on Windows, - * because driver paths are always ASCII. - */ -# endif 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 @@ -206,14 +245,13 @@ int RAND_write_file(const char *file) * device. Otherwise attempting to write to and chmod the device * causes problems. */ - return 1; + return (1); } - } # endif + } #endif -#if defined(O_CREAT) && !defined(OPENSSL_NO_POSIX_IO) && \ - !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_WINDOWS) +#if defined(O_CREAT) && !defined(OPENSSL_NO_POSIX_IO) && !defined(OPENSSL_SYS_VMS) { # ifndef O_BINARY # define O_BINARY 0 @@ -228,7 +266,7 @@ int RAND_write_file(const char *file) } #endif -#ifdef OPENSSL_SYS_VMS +#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 @@ -247,14 +285,17 @@ int RAND_write_file(const char *file) * rand file in a concurrent use situation. */ - out = openssl_fopen(file, "rb+"); -#endif + out = vms_fopen(file, "rb+", VMS_OPEN_ATTRS); if (out == NULL) - out = openssl_fopen(file, "wb"); + out = vms_fopen(file, "wb", VMS_OPEN_ATTRS); +#else + if (out == NULL) + out = fopen(file, "wb"); +#endif if (out == NULL) goto err; -#if !defined(NO_CHMOD) && !defined(OPENSSL_NO_POSIX_IO) +#ifndef NO_CHMOD chmod(file, 0600); #endif n = RAND_DATA; @@ -282,70 +323,31 @@ int RAND_write_file(const char *file) const char *RAND_file_name(char *buf, size_t size) { char *s = NULL; - int use_randfile = 1; #ifdef __OpenBSD__ struct stat sb; #endif -#if defined(_WIN32) && defined(CP_UTF8) - DWORD len; - WCHAR *var, *val; - - if ((var = L"RANDFILE", - len = GetEnvironmentVariableW(var, NULL, 0)) == 0 - && (var = L"HOME", use_randfile = 0, - len = GetEnvironmentVariableW(var, NULL, 0)) == 0 - && (var = L"USERPROFILE", - len = GetEnvironmentVariableW(var, NULL, 0)) == 0) { - var = L"SYSTEMROOT", - len = GetEnvironmentVariableW(var, NULL, 0); - } - - if (len != 0) { - int sz; - - val = _alloca(len * sizeof(WCHAR)); - - if (GetEnvironmentVariableW(var, val, len) < len - && (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 (OPENSSL_issetugid() != 0) { - use_randfile = 0; - } else { + if (OPENSSL_issetugid() == 0) s = getenv("RANDFILE"); - if (s == NULL || *s == '\0') { - use_randfile = 0; + 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"); - } - } -#endif #ifdef DEFAULT_HOME - if (!use_randfile && s == NULL) { - s = DEFAULT_HOME; - } + if (s == NULL) { + s = DEFAULT_HOME; + } #endif - if (s != NULL && *s) { - size_t len = strlen(s); - - if (use_randfile && len + 1 < size) { - if (OPENSSL_strlcpy(buf, s, size) >= size) - return NULL; - } else if (len + strlen(RFILE) + 2 < size) { - OPENSSL_strlcpy(buf, s, size); + if (s && *s && strlen(s) + strlen(RFILE) + 2 < size) { + BUF_strlcpy(buf, s, size); #ifndef OPENSSL_SYS_VMS - OPENSSL_strlcat(buf, "/", size); + BUF_strlcat(buf, "/", size); #endif - OPENSSL_strlcat(buf, RFILE, size); - } - } else { - buf[0] = '\0'; /* no file name */ + BUF_strlcat(buf, RFILE, size); + } else + buf[0] = '\0'; /* no file name */ } #ifdef __OpenBSD__ @@ -357,10 +359,14 @@ const char *RAND_file_name(char *buf, size_t size) * available. */ - if (!buf[0] || stat(buf, &sb) == -1) - if (OPENSSL_strlcpy(buf, "/dev/arandom", size) >= size) { - return NULL; + 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[0] ? buf : NULL; + return (buf); } |