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>
65 static int allow_customize = 1; /* we provide flexible functions for */
66 static int allow_customize_debug = 1;/* exchanging memory-related functions at
67 * run-time, but this must be done
68 * before any blocks are actually
69 * allocated; or we'll run into huge
70 * problems when malloc/free pairs
73 /* may be changed as long as `allow_customize' is set */
74 static void *(*malloc_locked_func)(size_t) = malloc;
75 static void (*free_locked_func)(void *) = free;
76 static void *(*malloc_func)(size_t) = malloc;
77 static void *(*realloc_func)(void *, size_t)= realloc;
78 static void (*free_func)(void *) = free;
80 static void *crypto_i_malloc_ex(size_t, const char *file, int line);
81 static void *crypto_i_realloc_ex(void *, size_t, const char *file, int line);
82 static void crypto_i_free_ex(void *);
83 static void *(*malloc_locked_ex_func)(size_t, const char *file, int line)
85 static void (*free_locked_ex_func)(void *)
87 static void *(*malloc_ex_func)(size_t, const char *file, int line)
89 static void *(*realloc_ex_func)(void *, size_t, const char *file, int line)
90 = crypto_i_realloc_ex;
91 static void (*free_ex_func)(void *)
94 /* may be changed as long as `allow_customize_debug' is set */
95 /* XXX use correct function pointer types */
97 /* use default functions from mem_dbg.c */
98 static void (*malloc_debug_func)(void *,int,const char *,int,int)
100 static void (*realloc_debug_func)(void *,void *,int,const char *,int,int)
101 = CRYPTO_dbg_realloc;
102 static void (*free_debug_func)(void *,int) = CRYPTO_dbg_free;
103 static void (*set_debug_options_func)(long) = CRYPTO_dbg_set_options;
104 static long (*get_debug_options_func)(void) = CRYPTO_dbg_get_options;
106 /* applications can use CRYPTO_malloc_debug_init() to select above case
108 static void (*malloc_debug_func)(void *,int,const char *,int,int) = NULL;
109 static void (*realloc_debug_func)(void *,void *,int,const char *,int,int)
111 static void (*free_debug_func)(void *,int) = NULL;
112 static void (*set_debug_options_func)(long) = NULL;
113 static long (*get_debug_options_func)(void) = NULL;
117 int CRYPTO_set_mem_functions(void *(*m)(size_t), void *(*r)(void *, size_t),
120 if (!allow_customize)
122 if ((m == NULL) || (r == NULL) || (f == NULL))
127 malloc_locked_func=m;
132 int CRYPTO_set_mem_ex_functions(
133 void *(*m)(size_t,const char *,int),
134 void *(*r)(void *, size_t,const char *,int),
137 if (!allow_customize)
139 if (m == NULL) m = crypto_i_malloc_ex;
140 if (r == NULL) r = crypto_i_realloc_ex;
141 if (f == NULL) f = crypto_i_free_ex;
145 malloc_locked_ex_func=m;
146 free_locked_ex_func=f;
150 int CRYPTO_set_locked_mem_functions(void *(*m)(size_t), void (*f)(void *))
152 if (!allow_customize)
154 if ((m == NULL) || (f == NULL))
156 malloc_locked_func=m;
161 int CRYPTO_set_locked_mem_ex_functions(
162 void *(*m)(size_t,const char *,int),
165 if (!allow_customize)
167 if (m == NULL) m = crypto_i_malloc_ex;
168 if (f == NULL) f = crypto_i_free_ex;
169 malloc_locked_ex_func=m;
170 free_locked_ex_func=f;
174 int CRYPTO_set_mem_debug_functions(void (*m)(void *,int,const char *,int,int),
175 void (*r)(void *,void *,int,const char *,int,int),
176 void (*f)(void *,int),
180 if (!allow_customize_debug)
183 realloc_debug_func=r;
185 set_debug_options_func=so;
186 get_debug_options_func=go;
190 void CRYPTO_get_mem_functions(void *(**m)(size_t), void *(**r)(void *, size_t),
193 if (m != NULL) *m=malloc_func;
194 if (r != NULL) *r=realloc_func;
195 if (f != NULL) *f=free_func;
198 void CRYPTO_get_mem_ex_functions(
199 void *(**m)(size_t,const char *,int),
200 void *(**r)(void *, size_t,const char *,int),
203 if (m != NULL) *m=malloc_ex_func;
204 if (r != NULL) *r=realloc_ex_func;
205 if (f != NULL) *f=free_ex_func;
208 void CRYPTO_get_locked_mem_functions(void *(**m)(size_t), void (**f)(void *))
210 if (m != NULL) *m=malloc_locked_func;
211 if (f != NULL) *f=free_locked_func;
214 void CRYPTO_get_locked_mem_ex_functions(
215 void *(**m)(size_t,const char *,int),
218 if (m != NULL) *m=malloc_locked_ex_func;
219 if (f != NULL) *f=free_locked_ex_func;
222 void CRYPTO_get_mem_debug_functions(void (**m)(void *,int,const char *,int,int),
223 void (**r)(void *,void *,int,const char *,int,int),
224 void (**f)(void *,int),
228 if (m != NULL) *m=malloc_debug_func;
229 if (r != NULL) *r=realloc_debug_func;
230 if (f != NULL) *f=free_debug_func;
231 if (so != NULL) *so=set_debug_options_func;
232 if (go != NULL) *go=get_debug_options_func;
236 void *CRYPTO_malloc_locked(int num, const char *file, int line)
241 if (malloc_debug_func != NULL)
243 allow_customize_debug = 0;
244 malloc_debug_func(NULL, num, file, line, 0);
246 ret = malloc_locked_ex_func(num,file,line);
247 #ifdef LEVITTE_DEBUG_MEM
248 fprintf(stderr, "LEVITTE_DEBUG_MEM: > 0x%p (%d)\n", ret, num);
250 if (malloc_debug_func != NULL)
251 malloc_debug_func(ret, num, file, line, 1);
256 void CRYPTO_free_locked(void *str)
258 if (free_debug_func != NULL)
259 free_debug_func(str, 0);
260 #ifdef LEVITTE_DEBUG_MEM
261 fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str);
263 free_locked_ex_func(str);
264 if (free_debug_func != NULL)
265 free_debug_func(NULL, 1);
268 void *CRYPTO_malloc(int num, const char *file, int line)
273 if (malloc_debug_func != NULL)
275 allow_customize_debug = 0;
276 malloc_debug_func(NULL, num, file, line, 0);
278 ret = malloc_ex_func(num,file,line);
279 #ifdef LEVITTE_DEBUG_MEM
280 fprintf(stderr, "LEVITTE_DEBUG_MEM: > 0x%p (%d)\n", ret, num);
282 if (malloc_debug_func != NULL)
283 malloc_debug_func(ret, num, file, line, 1);
288 void *CRYPTO_realloc(void *str, int num, const char *file, int line)
292 if (realloc_debug_func != NULL)
293 realloc_debug_func(str, NULL, num, file, line, 0);
294 ret = realloc_ex_func(str,num,file,line);
295 #ifdef LEVITTE_DEBUG_MEM
296 fprintf(stderr, "LEVITTE_DEBUG_MEM: | 0x%p -> 0x%p (%d)\n", str, ret, num);
298 if (realloc_debug_func != NULL)
299 realloc_debug_func(str, ret, num, file, line, 1);
304 void CRYPTO_free(void *str)
306 if (free_debug_func != NULL)
307 free_debug_func(str, 0);
308 #ifdef LEVITTE_DEBUG_MEM
309 fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str);
312 if (free_debug_func != NULL)
313 free_debug_func(NULL, 1);
316 void *CRYPTO_remalloc(void *a, int num, const char *file, int line)
318 if (a != NULL) OPENSSL_free(a);
319 a=(char *)OPENSSL_malloc(num);
324 void CRYPTO_set_mem_debug_options(long bits)
326 if (set_debug_options_func != NULL)
327 set_debug_options_func(bits);
330 long CRYPTO_get_mem_debug_options(void)
332 if (get_debug_options_func != NULL)
333 return get_debug_options_func();
337 static void *crypto_i_malloc_ex(size_t num, const char *file, int line)
339 return malloc_func(num);
342 static void *crypto_i_realloc_ex(void *str, size_t num,
343 const char *file, int line)
345 return realloc_func(str,num);
348 static void crypto_i_free_ex(void *str)