2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
61 #include <openssl/crypto.h>
64 static int allow_customize = 1; /* we provide flexible functions for */
65 static int allow_customize_debug = 1; /* exchanging memory-related functions
66 * at run-time, but this must be done
67 * before any blocks are actually
68 * allocated; or we'll run into huge
69 * problems when malloc/free pairs
73 * the following pointers may be changed as long as 'allow_customize' is set
76 static void *(*malloc_func) (size_t) = malloc;
77 static void *default_malloc_ex(size_t num, const char *file, int line)
79 return malloc_func(num);
82 static void *(*malloc_ex_func) (size_t, const char *file, int line)
85 #ifdef OPENSSL_SYS_VMS
86 # if __INITIAL_POINTER_SIZE == 64
87 # define realloc _realloc64
88 # elif __INITIAL_POINTER_SIZE == 32
89 # define realloc _realloc32
93 static void *(*realloc_func) (void *, size_t) = realloc;
94 static void *default_realloc_ex(void *str, size_t num,
95 const char *file, int line)
97 return realloc_func(str, num);
100 static void *(*realloc_ex_func) (void *, size_t, const char *file, int line)
101 = default_realloc_ex;
103 #ifdef OPENSSL_SYS_VMS
104 static void (*free_func) (__void_ptr64) = free;
106 static void (*free_func) (void *) = free;
109 static void *(*malloc_locked_func) (size_t) = malloc;
110 static void *default_malloc_locked_ex(size_t num, const char *file, int line)
112 return malloc_locked_func(num);
115 static void *(*malloc_locked_ex_func) (size_t, const char *file, int line)
116 = default_malloc_locked_ex;
118 #ifdef OPENSSL_SYS_VMS
119 static void (*free_locked_func) (__void_ptr64) = free;
121 static void (*free_locked_func) (void *) = free;
124 /* may be changed as long as 'allow_customize_debug' is set */
125 /* XXX use correct function pointer types */
127 /* use default functions from mem_dbg.c */
128 static void (*malloc_debug_func) (void *, int, const char *, int, int)
130 static void (*realloc_debug_func) (void *, void *, int, const char *, int,
132 = CRYPTO_dbg_realloc;
133 static void (*free_debug_func) (void *, int) = CRYPTO_dbg_free;
134 static void (*set_debug_options_func) (long) = CRYPTO_dbg_set_options;
135 static long (*get_debug_options_func) (void) = CRYPTO_dbg_get_options;
138 * applications can use CRYPTO_malloc_debug_init() to select above case at
141 static void (*malloc_debug_func) (void *, int, const char *, int, int) = NULL;
142 static void (*realloc_debug_func) (void *, void *, int, const char *, int,
145 static void (*free_debug_func) (void *, int) = NULL;
146 static void (*set_debug_options_func) (long) = NULL;
147 static long (*get_debug_options_func) (void) = NULL;
150 int CRYPTO_set_mem_functions(void *(*m) (size_t), void *(*r) (void *, size_t),
153 if (!allow_customize)
155 if ((m == 0) || (r == 0) || (f == 0))
157 /* Dummy call just to ensure OPENSSL_init() gets linked in */
160 malloc_ex_func = default_malloc_ex;
162 realloc_ex_func = default_realloc_ex;
164 malloc_locked_func = m;
165 malloc_locked_ex_func = default_malloc_locked_ex;
166 free_locked_func = f;
170 int CRYPTO_set_mem_ex_functions(void *(*m) (size_t, const char *, int),
171 void *(*r) (void *, size_t, const char *,
172 int), void (*f) (void *))
174 if (!allow_customize)
176 if ((m == 0) || (r == 0) || (f == 0))
183 malloc_locked_func = 0;
184 malloc_locked_ex_func = m;
185 free_locked_func = f;
189 int CRYPTO_set_locked_mem_functions(void *(*m) (size_t), void (*f) (void *))
191 if (!allow_customize)
193 if ((m == NULL) || (f == NULL))
195 malloc_locked_func = m;
196 malloc_locked_ex_func = default_malloc_locked_ex;
197 free_locked_func = f;
201 int CRYPTO_set_locked_mem_ex_functions(void *(*m) (size_t, const char *, int),
204 if (!allow_customize)
206 if ((m == NULL) || (f == NULL))
208 malloc_locked_func = 0;
209 malloc_locked_ex_func = m;
214 int CRYPTO_set_mem_debug_functions(void (*m)
215 (void *, int, const char *, int, int),
216 void (*r) (void *, void *, int,
217 const char *, int, int),
218 void (*f) (void *, int), void (*so) (long),
221 if (!allow_customize_debug)
224 malloc_debug_func = m;
225 realloc_debug_func = r;
227 set_debug_options_func = so;
228 get_debug_options_func = go;
232 void CRYPTO_get_mem_functions(void *(**m) (size_t),
233 void *(**r) (void *, size_t),
237 *m = (malloc_ex_func == default_malloc_ex) ? malloc_func : 0;
239 *r = (realloc_ex_func == default_realloc_ex) ? realloc_func : 0;
244 void CRYPTO_get_mem_ex_functions(void *(**m) (size_t, const char *, int),
245 void *(**r) (void *, size_t, const char *,
246 int), void (**f) (void *))
249 *m = (malloc_ex_func != default_malloc_ex) ? malloc_ex_func : 0;
251 *r = (realloc_ex_func != default_realloc_ex) ? realloc_ex_func : 0;
256 void CRYPTO_get_locked_mem_functions(void *(**m) (size_t),
260 *m = (malloc_locked_ex_func == default_malloc_locked_ex) ?
261 malloc_locked_func : 0;
263 *f = free_locked_func;
266 void CRYPTO_get_locked_mem_ex_functions(void
267 *(**m) (size_t, const char *, int),
271 *m = (malloc_locked_ex_func != default_malloc_locked_ex) ?
272 malloc_locked_ex_func : 0;
274 *f = free_locked_func;
277 void CRYPTO_get_mem_debug_functions(void (**m)
278 (void *, int, const char *, int, int),
279 void (**r) (void *, void *, int,
280 const char *, int, int),
281 void (**f) (void *, int),
282 void (**so) (long), long (**go) (void))
285 *m = malloc_debug_func;
287 *r = realloc_debug_func;
289 *f = free_debug_func;
291 *so = set_debug_options_func;
293 *go = get_debug_options_func;
296 void *CRYPTO_malloc_locked(int num, const char *file, int line)
305 if (malloc_debug_func != NULL) {
306 if (allow_customize_debug)
307 allow_customize_debug = 0;
308 malloc_debug_func(NULL, num, file, line, 0);
310 ret = malloc_locked_ex_func(num, file, line);
311 #ifdef LEVITTE_DEBUG_MEM
312 fprintf(stderr, "LEVITTE_DEBUG_MEM: > 0x%p (%d)\n", ret, num);
314 if (malloc_debug_func != NULL)
315 malloc_debug_func(ret, num, file, line, 1);
320 void CRYPTO_free_locked(void *str)
322 if (free_debug_func != NULL)
323 free_debug_func(str, 0);
324 #ifdef LEVITTE_DEBUG_MEM
325 fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str);
327 free_locked_func(str);
328 if (free_debug_func != NULL)
329 free_debug_func(NULL, 1);
332 void *CRYPTO_malloc(int num, const char *file, int line)
341 if (malloc_debug_func != NULL) {
342 if (allow_customize_debug)
343 allow_customize_debug = 0;
344 malloc_debug_func(NULL, num, file, line, 0);
346 ret = malloc_ex_func(num, file, line);
347 #ifdef LEVITTE_DEBUG_MEM
348 fprintf(stderr, "LEVITTE_DEBUG_MEM: > 0x%p (%d)\n", ret, num);
350 if (malloc_debug_func != NULL)
351 malloc_debug_func(ret, num, file, line, 1);
356 char *CRYPTO_strdup(const char *str, const char *file, int line)
358 char *ret = CRYPTO_malloc(strlen(str) + 1, file, line);
367 void *CRYPTO_realloc(void *str, int num, const char *file, int line)
372 return CRYPTO_malloc(num, file, line);
377 if (realloc_debug_func != NULL)
378 realloc_debug_func(str, NULL, num, file, line, 0);
379 ret = realloc_ex_func(str, num, file, line);
380 #ifdef LEVITTE_DEBUG_MEM
381 fprintf(stderr, "LEVITTE_DEBUG_MEM: | 0x%p -> 0x%p (%d)\n", str,
384 if (realloc_debug_func != NULL)
385 realloc_debug_func(str, ret, num, file, line, 1);
390 void *CRYPTO_realloc_clean(void *str, int old_len, int num, const char *file,
396 return CRYPTO_malloc(num, file, line);
402 * We don't support shrinking the buffer. Note the memcpy that copies
403 * |old_len| bytes to the new buffer, below.
408 if (realloc_debug_func != NULL)
409 realloc_debug_func(str, NULL, num, file, line, 0);
410 ret = malloc_ex_func(num, file, line);
412 memcpy(ret, str, old_len);
413 OPENSSL_cleanse(str, old_len);
416 #ifdef LEVITTE_DEBUG_MEM
418 "LEVITTE_DEBUG_MEM: | 0x%p -> 0x%p (%d)\n",
421 if (realloc_debug_func != NULL)
422 realloc_debug_func(str, ret, num, file, line, 1);
427 void CRYPTO_free(void *str)
429 if (free_debug_func != NULL)
430 free_debug_func(str, 0);
431 #ifdef LEVITTE_DEBUG_MEM
432 fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str);
435 if (free_debug_func != NULL)
436 free_debug_func(NULL, 1);
439 void *CRYPTO_remalloc(void *a, int num, const char *file, int line)
443 a = (char *)OPENSSL_malloc(num);
447 void CRYPTO_set_mem_debug_options(long bits)
449 if (set_debug_options_func != NULL)
450 set_debug_options_func(bits);
453 long CRYPTO_get_mem_debug_options(void)
455 if (get_debug_options_func != NULL)
456 return get_debug_options_func();