1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
61 #include <openssl/crypto.h>
62 #include "internal/cryptlib.h"
65 * the following pointers may be changed as long as 'allow_customize' is set
67 static int allow_customize = 1;
69 static void *(*malloc_impl)(size_t, const char *, int)
71 static void *(*realloc_impl)(void *, size_t, const char *, int)
73 static void (*free_impl)(void *, const char *, int)
76 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
77 static int call_malloc_debug = 1;
79 static int call_malloc_debug = 0;
82 int CRYPTO_set_mem_functions(
83 void *(*m)(size_t, const char *, int),
84 void *(*r)(void *, size_t, const char *, int),
85 void (*f)(void *, const char *, int))
98 int CRYPTO_set_mem_debug(int flag)
100 if (!allow_customize)
102 call_malloc_debug = flag;
106 void CRYPTO_get_mem_functions(
107 void *(**m)(size_t, const char *, int),
108 void *(**r)(void *, size_t, const char *, int),
109 void (**f)(void *, const char *, int))
119 void *CRYPTO_malloc(size_t num, const char *file, int line)
123 if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)
124 return malloc_impl(num, file, line);
130 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
131 if (call_malloc_debug) {
132 CRYPTO_mem_debug_malloc(NULL, num, 0, file, line);
134 CRYPTO_mem_debug_malloc(ret, num, 1, file, line);
139 osslargused(file); osslargused(line);
146 void *CRYPTO_zalloc(size_t num, const char *file, int line)
148 void *ret = CRYPTO_malloc(num, file, line);
155 void *CRYPTO_realloc(void *str, size_t num, const char *file, int line)
157 if (realloc_impl != NULL && realloc_impl != &CRYPTO_realloc)
158 return realloc_impl(str, num, file, line);
161 return CRYPTO_malloc(num, file, line);
164 CRYPTO_free(str, file, line);
169 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
170 if (call_malloc_debug) {
172 CRYPTO_mem_debug_realloc(str, NULL, num, 0, file, line);
173 ret = realloc(str, num);
174 CRYPTO_mem_debug_realloc(str, ret, num, 1, file, line);
178 osslargused(file); osslargused(line);
180 return realloc(str, num);
184 void *CRYPTO_clear_realloc(void *str, size_t old_len, size_t num,
185 const char *file, int line)
190 return CRYPTO_malloc(num, file, line);
193 CRYPTO_clear_free(str, old_len, file, line);
197 /* Can't shrink the buffer since memcpy below copies |old_len| bytes. */
199 memset((char*)str + num, 0, old_len - num);
203 ret = CRYPTO_malloc(num, file, line);
205 memcpy(ret, str, old_len);
206 CRYPTO_clear_free(str, old_len, file, line);
211 void CRYPTO_free(void *str, const char *file, int line)
213 if (free_impl != NULL && free_impl != &CRYPTO_free) {
214 free_impl(str, file, line);
218 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
219 if (call_malloc_debug) {
220 CRYPTO_mem_debug_free(str, 0, file, line);
222 CRYPTO_mem_debug_free(str, 1, file, line);
231 void CRYPTO_clear_free(void *str, size_t num, const char *file, int line)
236 OPENSSL_cleanse(str, num);
237 CRYPTO_free(str, file, line);