diff options
Diffstat (limited to 'Cryptlib/OpenSSL/crypto/mem.c')
| -rw-r--r-- | Cryptlib/OpenSSL/crypto/mem.c | 484 |
1 files changed, 376 insertions, 108 deletions
diff --git a/Cryptlib/OpenSSL/crypto/mem.c b/Cryptlib/OpenSSL/crypto/mem.c index 02aa43a7..06c3960c 100644 --- a/Cryptlib/OpenSSL/crypto/mem.c +++ b/Cryptlib/OpenSSL/crypto/mem.c @@ -1,190 +1,458 @@ -/* - * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. +/* crypto/mem.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. * - * 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 + * 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 <stdio.h> #include <stdlib.h> -#include <limits.h> #include <openssl/crypto.h> -#include "internal/cryptlib.h" +#include "cryptlib.h" + +static int allow_customize = 1; /* we provide flexible functions for */ +static int allow_customize_debug = 1; /* exchanging memory-related functions + * at run-time, but this must be done + * before any blocks are actually + * allocated; or we'll run into huge + * problems when malloc/free pairs + * don't match etc. */ /* * the following pointers may be changed as long as 'allow_customize' is set */ -static int allow_customize = 1; -static void *(*malloc_impl)(size_t, const char *, int) - = CRYPTO_malloc; -static void *(*realloc_impl)(void *, size_t, const char *, int) - = CRYPTO_realloc; -static void (*free_impl)(void *, const char *, int) - = CRYPTO_free; +static void *(*malloc_func) (size_t) = malloc; +static void *default_malloc_ex(size_t num, const char *file, int line) +{ + return malloc_func(num); +} + +static void *(*malloc_ex_func) (size_t, const char *file, int line) + = default_malloc_ex; + +#ifdef OPENSSL_SYS_VMS +# if __INITIAL_POINTER_SIZE == 64 +# define realloc _realloc64 +# elif __INITIAL_POINTER_SIZE == 32 +# define realloc _realloc32 +# endif +#endif + +static void *(*realloc_func) (void *, size_t) = realloc; +static void *default_realloc_ex(void *str, size_t num, + const char *file, int line) +{ + return realloc_func(str, num); +} + +static void *(*realloc_ex_func) (void *, size_t, const char *file, int line) + = default_realloc_ex; + +#ifdef OPENSSL_SYS_VMS + static void (*free_func) (__void_ptr64) = free; +#else + static void (*free_func) (void *) = free; +#endif + +static void *(*malloc_locked_func) (size_t) = malloc; +static void *default_malloc_locked_ex(size_t num, const char *file, int line) +{ + return malloc_locked_func(num); +} + +static void *(*malloc_locked_ex_func) (size_t, const char *file, int line) + = default_malloc_locked_ex; -#ifndef OPENSSL_NO_CRYPTO_MDEBUG -static int call_malloc_debug = 1; +#ifdef OPENSSL_SYS_VMS + static void (*free_locked_func) (__void_ptr64) = free; #else -static int call_malloc_debug = 0; + static void (*free_locked_func) (void *) = free; +#endif + +/* may be changed as long as 'allow_customize_debug' is set */ +/* XXX use correct function pointer types */ +#ifdef CRYPTO_MDEBUG +/* use default functions from mem_dbg.c */ +static void (*malloc_debug_func) (void *, int, const char *, int, int) + = CRYPTO_dbg_malloc; +static void (*realloc_debug_func) (void *, void *, int, const char *, int, + int) + = CRYPTO_dbg_realloc; +static void (*free_debug_func) (void *, int) = CRYPTO_dbg_free; +static void (*set_debug_options_func) (long) = CRYPTO_dbg_set_options; +static long (*get_debug_options_func) (void) = CRYPTO_dbg_get_options; +#else +/* + * applications can use CRYPTO_malloc_debug_init() to select above case at + * run-time + */ +static void (*malloc_debug_func) (void *, int, const char *, int, int) = NULL; +static void (*realloc_debug_func) (void *, void *, int, const char *, int, + int) + = NULL; +static void (*free_debug_func) (void *, int) = NULL; +static void (*set_debug_options_func) (long) = NULL; +static long (*get_debug_options_func) (void) = NULL; #endif -int CRYPTO_set_mem_functions( - void *(*m)(size_t, const char *, int), - void *(*r)(void *, size_t, const char *, int), - void (*f)(void *, const char *, int)) +int CRYPTO_set_mem_functions(void *(*m) (size_t), void *(*r) (void *, size_t), + void (*f) (void *)) { + /* Dummy call just to ensure OPENSSL_init() gets linked in */ + OPENSSL_init(); if (!allow_customize) return 0; - if (m) - malloc_impl = m; - if (r) - realloc_impl = r; - if (f) - free_impl = f; + if ((m == 0) || (r == 0) || (f == 0)) + return 0; + malloc_func = m; + malloc_ex_func = default_malloc_ex; + realloc_func = r; + realloc_ex_func = default_realloc_ex; + free_func = f; + malloc_locked_func = m; + malloc_locked_ex_func = default_malloc_locked_ex; + free_locked_func = f; + return 1; +} + +int CRYPTO_set_mem_ex_functions(void *(*m) (size_t, const char *, int), + void *(*r) (void *, size_t, const char *, + int), void (*f) (void *)) +{ + if (!allow_customize) + return 0; + if ((m == 0) || (r == 0) || (f == 0)) + return 0; + malloc_func = 0; + malloc_ex_func = m; + realloc_func = 0; + realloc_ex_func = r; + free_func = f; + malloc_locked_func = 0; + malloc_locked_ex_func = m; + free_locked_func = f; + return 1; +} + +int CRYPTO_set_locked_mem_functions(void *(*m) (size_t), void (*f) (void *)) +{ + if (!allow_customize) + return 0; + if ((m == NULL) || (f == NULL)) + return 0; + malloc_locked_func = m; + malloc_locked_ex_func = default_malloc_locked_ex; + free_locked_func = f; return 1; } -int CRYPTO_set_mem_debug(int flag) +int CRYPTO_set_locked_mem_ex_functions(void *(*m) (size_t, const char *, int), + void (*f) (void *)) { if (!allow_customize) return 0; - call_malloc_debug = flag; + if ((m == NULL) || (f == NULL)) + return 0; + malloc_locked_func = 0; + malloc_locked_ex_func = m; + free_func = f; + return 1; +} + +int CRYPTO_set_mem_debug_functions(void (*m) + (void *, int, const char *, int, int), + void (*r) (void *, void *, int, + const char *, int, int), + void (*f) (void *, int), void (*so) (long), + long (*go) (void)) +{ + if (!allow_customize_debug) + return 0; + OPENSSL_init(); + malloc_debug_func = m; + realloc_debug_func = r; + free_debug_func = f; + set_debug_options_func = so; + get_debug_options_func = go; return 1; } -void CRYPTO_get_mem_functions( - void *(**m)(size_t, const char *, int), - void *(**r)(void *, size_t, const char *, int), - void (**f)(void *, const char *, int)) +void CRYPTO_get_mem_functions(void *(**m) (size_t), + void *(**r) (void *, size_t), + void (**f) (void *)) +{ + if (m != NULL) + *m = (malloc_ex_func == default_malloc_ex) ? malloc_func : 0; + if (r != NULL) + *r = (realloc_ex_func == default_realloc_ex) ? realloc_func : 0; + if (f != NULL) + *f = free_func; +} + +void CRYPTO_get_mem_ex_functions(void *(**m) (size_t, const char *, int), + void *(**r) (void *, size_t, const char *, + int), void (**f) (void *)) +{ + if (m != NULL) + *m = (malloc_ex_func != default_malloc_ex) ? malloc_ex_func : 0; + if (r != NULL) + *r = (realloc_ex_func != default_realloc_ex) ? realloc_ex_func : 0; + if (f != NULL) + *f = free_func; +} + +void CRYPTO_get_locked_mem_functions(void *(**m) (size_t), + void (**f) (void *)) +{ + if (m != NULL) + *m = (malloc_locked_ex_func == default_malloc_locked_ex) ? + malloc_locked_func : 0; + if (f != NULL) + *f = free_locked_func; +} + +void CRYPTO_get_locked_mem_ex_functions(void + *(**m) (size_t, const char *, int), + void (**f) (void *)) +{ + if (m != NULL) + *m = (malloc_locked_ex_func != default_malloc_locked_ex) ? + malloc_locked_ex_func : 0; + if (f != NULL) + *f = free_locked_func; +} + +void CRYPTO_get_mem_debug_functions(void (**m) + (void *, int, const char *, int, int), + void (**r) (void *, void *, int, + const char *, int, int), + void (**f) (void *, int), + void (**so) (long), long (**go) (void)) { if (m != NULL) - *m = malloc_impl; + *m = malloc_debug_func; if (r != NULL) - *r = realloc_impl; + *r = realloc_debug_func; if (f != NULL) - *f = free_impl; + *f = free_debug_func; + if (so != NULL) + *so = set_debug_options_func; + if (go != NULL) + *go = get_debug_options_func; } -void *CRYPTO_malloc(size_t num, const char *file, int line) +void *CRYPTO_malloc_locked(int num, const char *file, int line) { void *ret = NULL; - if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc) - return malloc_impl(num, file, line); + if (num <= 0) + return NULL; + + if (allow_customize) + allow_customize = 0; + if (malloc_debug_func != NULL) { + if (allow_customize_debug) + allow_customize_debug = 0; + malloc_debug_func(NULL, num, file, line, 0); + } + ret = malloc_locked_ex_func(num, file, line); +#ifdef LEVITTE_DEBUG_MEM + fprintf(stderr, "LEVITTE_DEBUG_MEM: > 0x%p (%d)\n", ret, num); +#endif + if (malloc_debug_func != NULL) + malloc_debug_func(ret, num, file, line, 1); + + return ret; +} + +void CRYPTO_free_locked(void *str) +{ + if (free_debug_func != NULL) + free_debug_func(str, 0); +#ifdef LEVITTE_DEBUG_MEM + fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str); +#endif + free_locked_func(str); + if (free_debug_func != NULL) + free_debug_func(NULL, 1); +} + +void *CRYPTO_malloc(int num, const char *file, int line) +{ + void *ret = NULL; if (num <= 0) return NULL; - allow_customize = 0; -#ifndef OPENSSL_NO_CRYPTO_MDEBUG - if (call_malloc_debug) { - CRYPTO_mem_debug_malloc(NULL, num, 0, file, line); - ret = malloc(num); - CRYPTO_mem_debug_malloc(ret, num, 1, file, line); - } else { - ret = malloc(num); + if (allow_customize) + allow_customize = 0; + if (malloc_debug_func != NULL) { + if (allow_customize_debug) + allow_customize_debug = 0; + malloc_debug_func(NULL, num, file, line, 0); } -#else - osslargused(file); osslargused(line); - ret = malloc(num); + ret = malloc_ex_func(num, file, line); +#ifdef LEVITTE_DEBUG_MEM + fprintf(stderr, "LEVITTE_DEBUG_MEM: > 0x%p (%d)\n", ret, num); #endif + if (malloc_debug_func != NULL) + malloc_debug_func(ret, num, file, line, 1); return ret; } -void *CRYPTO_zalloc(size_t num, const char *file, int line) +char *CRYPTO_strdup(const char *str, const char *file, int line) { - void *ret = CRYPTO_malloc(num, file, line); + char *ret = CRYPTO_malloc(strlen(str) + 1, file, line); - if (ret != NULL) - memset(ret, 0, num); + if (ret == NULL) + return NULL; + + strcpy(ret, str); return ret; } -void *CRYPTO_realloc(void *str, size_t num, const char *file, int line) +void *CRYPTO_realloc(void *str, int num, const char *file, int line) { - if (realloc_impl != NULL && realloc_impl != &CRYPTO_realloc) - return realloc_impl(str, num, file, line); + void *ret = NULL; if (str == NULL) return CRYPTO_malloc(num, file, line); - if (num == 0) { - CRYPTO_free(str, file, line); + if (num <= 0) return NULL; - } - allow_customize = 0; -#ifndef OPENSSL_NO_CRYPTO_MDEBUG - if (call_malloc_debug) { - void *ret; - CRYPTO_mem_debug_realloc(str, NULL, num, 0, file, line); - ret = realloc(str, num); - CRYPTO_mem_debug_realloc(str, ret, num, 1, file, line); - return ret; - } -#else - osslargused(file); osslargused(line); + if (realloc_debug_func != NULL) + realloc_debug_func(str, NULL, num, file, line, 0); + ret = realloc_ex_func(str, num, file, line); +#ifdef LEVITTE_DEBUG_MEM + fprintf(stderr, "LEVITTE_DEBUG_MEM: | 0x%p -> 0x%p (%d)\n", str, + ret, num); #endif - return realloc(str, num); + if (realloc_debug_func != NULL) + realloc_debug_func(str, ret, num, file, line, 1); + return ret; } -void *CRYPTO_clear_realloc(void *str, size_t old_len, size_t num, - const char *file, int line) +void *CRYPTO_realloc_clean(void *str, int old_len, int num, const char *file, + int line) { void *ret = NULL; if (str == NULL) return CRYPTO_malloc(num, file, line); - if (num == 0) { - CRYPTO_clear_free(str, old_len, file, line); + if (num <= 0) return NULL; - } - /* Can't shrink the buffer since memcpy below copies |old_len| bytes. */ - if (num < old_len) { - OPENSSL_cleanse((char*)str + num, old_len - num); - return str; - } + /* + * We don't support shrinking the buffer. Note the memcpy that copies + * |old_len| bytes to the new buffer, below. + */ + if (num < old_len) + return NULL; - ret = CRYPTO_malloc(num, file, line); - if (ret != NULL) { + if (realloc_debug_func != NULL) + realloc_debug_func(str, NULL, num, file, line, 0); + ret = malloc_ex_func(num, file, line); + if (ret) { memcpy(ret, str, old_len); - CRYPTO_clear_free(str, old_len, file, line); + OPENSSL_cleanse(str, old_len); + free_func(str); } +#ifdef LEVITTE_DEBUG_MEM + fprintf(stderr, + "LEVITTE_DEBUG_MEM: | 0x%p -> 0x%p (%d)\n", + str, ret, num); +#endif + if (realloc_debug_func != NULL) + realloc_debug_func(str, ret, num, file, line, 1); + return ret; } -void CRYPTO_free(void *str, const char *file, int line) +void CRYPTO_free(void *str) { - if (free_impl != NULL && free_impl != &CRYPTO_free) { - free_impl(str, file, line); - return; - } - -#ifndef OPENSSL_NO_CRYPTO_MDEBUG - if (call_malloc_debug) { - CRYPTO_mem_debug_free(str, 0, file, line); - free(str); - CRYPTO_mem_debug_free(str, 1, file, line); - } else { - free(str); - } -#else - free(str); + if (free_debug_func != NULL) + free_debug_func(str, 0); +#ifdef LEVITTE_DEBUG_MEM + fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str); #endif + free_func(str); + if (free_debug_func != NULL) + free_debug_func(NULL, 1); } -void CRYPTO_clear_free(void *str, size_t num, const char *file, int line) +void *CRYPTO_remalloc(void *a, int num, const char *file, int line) { - if (str == NULL) - return; - if (num) - OPENSSL_cleanse(str, num); - CRYPTO_free(str, file, line); + if (a != NULL) + OPENSSL_free(a); + a = (char *)OPENSSL_malloc(num); + return (a); +} + +void CRYPTO_set_mem_debug_options(long bits) +{ + if (set_debug_options_func != NULL) + set_debug_options_func(bits); +} + +long CRYPTO_get_mem_debug_options(void) +{ + if (get_debug_options_func != NULL) + return get_debug_options_func(); + return 0; } |