-/* 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.
- *
- * 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.
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
- * 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.]
+ * 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 <stdio.h>
*/
static int allow_customize = 1;
-static void *(*malloc_wrapper)(size_t, const char *, int)
+static void *(*malloc_impl)(size_t, const char *, int)
= CRYPTO_malloc;
-static void *(*realloc_wrapper)(void *, size_t, const char *, int)
+static void *(*realloc_impl)(void *, size_t, const char *, int)
= CRYPTO_realloc;
-static void (*free_wrapper)(void *)
+static void (*free_impl)(void *, const char *, int)
= CRYPTO_free;
-#ifdef CRYPTO_MDEBUG
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
static int call_malloc_debug = 1;
#else
static int call_malloc_debug = 0;
int CRYPTO_set_mem_functions(
void *(*m)(size_t, const char *, int),
void *(*r)(void *, size_t, const char *, int),
- void (*f)(void *))
+ void (*f)(void *, const char *, int))
{
if (!allow_customize)
return 0;
if (m)
- malloc_wrapper = m;
+ malloc_impl = m;
if (r)
- realloc_wrapper = r;
+ realloc_impl = r;
if (f)
- free_wrapper = f;
+ free_impl = f;
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 *))
+ void (**f)(void *, const char *, int))
{
if (m != NULL)
- *m = malloc_wrapper;
+ *m = malloc_impl;
if (r != NULL)
- *r = realloc_wrapper;
+ *r = realloc_impl;
if (f != NULL)
- *f = free_wrapper;
+ *f = free_impl;
}
void *CRYPTO_malloc(size_t 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;
allow_customize = 0;
-#ifdef CRYPTO_MDEBUG
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
if (call_malloc_debug) {
CRYPTO_mem_debug_malloc(NULL, num, 0, file, line);
ret = malloc(num);
ret = malloc(num);
}
#else
- (void)file;
- (void)line;
+ osslargused(file); osslargused(line);
ret = malloc(num);
#endif
-#ifndef OPENSSL_CPUID_OBJ
- /*
- * Create a dependency on the value of 'cleanse_ctr' so our memory
- * sanitisation function can't be optimised out. NB: We only do this for
- * >2Kb so the overhead doesn't bother us.
- */
- if (ret && (num > 2048)) {
- extern unsigned char cleanse_ctr;
- ((unsigned char *)ret)[0] = cleanse_ctr;
- }
-#endif
-
return ret;
}
void *CRYPTO_realloc(void *str, size_t num, const char *file, int line)
{
+ if (realloc_impl != NULL && realloc_impl != &CRYPTO_realloc)
+ return realloc_impl(str, num, file, line);
+
if (str == NULL)
return CRYPTO_malloc(num, file, line);
if (num == 0) {
- CRYPTO_free(str);
+ CRYPTO_free(str, file, line);
return NULL;
}
allow_customize = 0;
-#ifdef CRYPTO_MDEBUG
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
if (call_malloc_debug) {
void *ret;
CRYPTO_mem_debug_realloc(str, NULL, num, 0, file, line);
return ret;
}
#else
- (void)file;
- (void)line;
+ osslargused(file); osslargused(line);
#endif
return realloc(str, num);
return CRYPTO_malloc(num, file, line);
if (num == 0) {
- CRYPTO_clear_free(str, old_len);
+ CRYPTO_clear_free(str, old_len, file, line);
return NULL;
}
/* Can't shrink the buffer since memcpy below copies |old_len| bytes. */
if (num < old_len) {
- memset((char*)str + num, 0, old_len - num);
+ OPENSSL_cleanse((char*)str + num, old_len - num);
return str;
}
- /* Allocate new memory. Call malloc and do a copy, so that we can
- * cleanse the old buffer. */
-#ifdef CRYPTO_MDEBUG
- if (call_malloc_debug) {
- CRYPTO_mem_debug_realloc(str, NULL, num, 0, file, line);
- ret = malloc(num);
- CRYPTO_mem_debug_realloc(str, ret, num, 1, file, line);
- } else {
- ret = malloc(num);
- }
-#else
- (void)file;
- (void)line;
- ret = malloc(num);
-#endif
-
- if (ret)
+ ret = CRYPTO_malloc(num, file, line);
+ if (ret != NULL) {
memcpy(ret, str, old_len);
- CRYPTO_clear_free(str, old_len);
+ CRYPTO_clear_free(str, old_len, file, line);
+ }
return ret;
}
-void CRYPTO_free(void *str)
+void CRYPTO_free(void *str, const char *file, int line)
{
-#ifdef CRYPTO_MDEBUG
+ 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);
+ CRYPTO_mem_debug_free(str, 0, file, line);
free(str);
- CRYPTO_mem_debug_free(str, 1);
+ CRYPTO_mem_debug_free(str, 1, file, line);
} else {
free(str);
}
#endif
}
-void CRYPTO_clear_free(void *str, size_t num)
+void CRYPTO_clear_free(void *str, size_t num, const char *file, int line)
{
if (str == NULL)
return;
if (num)
OPENSSL_cleanse(str, num);
- CRYPTO_free(str);
+ CRYPTO_free(str, file, line);
}