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
75 /* the following pointers may be changed as long as 'allow_customize' is set */
77 static void *(*malloc_func)(size_t) = malloc;
78 static void *default_malloc_ex(size_t num, const char *file, int line)
79 { return malloc_func(num); }
80 static void *(*malloc_ex_func)(size_t, const char *file, int line)
83 static void *(*realloc_func)(void *, size_t)= realloc;
84 static void *default_realloc_ex(void *str, size_t num,
85 const char *file, int line)
86 { return realloc_func(str,num); }
87 static void *(*realloc_ex_func)(void *, size_t, const char *file, int line)
90 static void (*free_func)(void *) = free;
92 static void *(*malloc_locked_func)(size_t) = malloc;
93 static void *default_malloc_locked_ex(size_t num, const char *file, int line)
94 { return malloc_locked_func(num); }
95 static void *(*malloc_locked_ex_func)(size_t, const char *file, int line)
96 = default_malloc_locked_ex;
98 static void (*free_locked_func)(void *) = free;
102 /* may be changed as long as 'allow_customize_debug' is set */
103 /* XXX use correct function pointer types */
105 /* use default functions from mem_dbg.c */
106 static void (*malloc_debug_func)(void *,int,const char *,int,int)
108 static void (*realloc_debug_func)(void *,void *,int,const char *,int,int)
109 = CRYPTO_dbg_realloc;
110 static void (*free_debug_func)(void *,int) = CRYPTO_dbg_free;
111 static void (*set_debug_options_func)(long) = CRYPTO_dbg_set_options;
112 static long (*get_debug_options_func)(void) = CRYPTO_dbg_get_options;
114 /* applications can use CRYPTO_malloc_debug_init() to select above case
116 static void (*malloc_debug_func)(void *,int,const char *,int,int) = NULL;
117 static void (*realloc_debug_func)(void *,void *,int,const char *,int,int)
119 static void (*free_debug_func)(void *,int) = NULL;
120 static void (*set_debug_options_func)(long) = NULL;
121 static long (*get_debug_options_func)(void) = NULL;
125 int CRYPTO_set_mem_functions(void *(*m)(size_t), void *(*r)(void *, size_t),
128 if (!allow_customize)
130 if ((m == 0) || (r == 0) || (f == 0))
132 malloc_func=m; malloc_ex_func=default_malloc_ex;
133 realloc_func=r; realloc_ex_func=default_realloc_ex;
135 malloc_locked_func=m; malloc_locked_ex_func=default_malloc_locked_ex;
140 int CRYPTO_set_mem_ex_functions(
141 void *(*m)(size_t,const char *,int),
142 void *(*r)(void *, size_t,const char *,int),
145 if (!allow_customize)
147 if ((m == 0) || (r == 0) || (f == 0))
149 malloc_func=0; malloc_ex_func=m;
150 realloc_func=0; realloc_ex_func=r;
152 malloc_locked_func=0; malloc_locked_ex_func=m;
157 int CRYPTO_set_locked_mem_functions(void *(*m)(size_t), void (*f)(void *))
159 if (!allow_customize)
161 if ((m == NULL) || (f == NULL))
163 malloc_locked_func=m; malloc_locked_ex_func=default_malloc_locked_ex;
168 int CRYPTO_set_locked_mem_ex_functions(
169 void *(*m)(size_t,const char *,int),
172 if (!allow_customize)
174 if ((m == NULL) || (f == NULL))
176 malloc_locked_func=0; malloc_locked_ex_func=m;
181 int CRYPTO_set_mem_debug_functions(void (*m)(void *,int,const char *,int,int),
182 void (*r)(void *,void *,int,const char *,int,int),
183 void (*f)(void *,int),
187 if (!allow_customize_debug)
190 realloc_debug_func=r;
192 set_debug_options_func=so;
193 get_debug_options_func=go;
198 void CRYPTO_get_mem_functions(void *(**m)(size_t), void *(**r)(void *, size_t),
201 if (m != NULL) *m = (malloc_ex_func == default_malloc_ex) ?
203 if (r != NULL) *r = (realloc_ex_func == default_realloc_ex) ?
205 if (f != NULL) *f=free_func;
208 void CRYPTO_get_mem_ex_functions(
209 void *(**m)(size_t,const char *,int),
210 void *(**r)(void *, size_t,const char *,int),
213 if (m != NULL) *m = (malloc_ex_func != default_malloc_ex) ?
215 if (r != NULL) *r = (realloc_ex_func != default_realloc_ex) ?
217 if (f != NULL) *f=free_func;
220 void CRYPTO_get_locked_mem_functions(void *(**m)(size_t), void (**f)(void *))
222 if (m != NULL) *m = (malloc_locked_ex_func == default_malloc_locked_ex) ?
223 malloc_locked_func : 0;
224 if (f != NULL) *f=free_locked_func;
227 void CRYPTO_get_locked_mem_ex_functions(
228 void *(**m)(size_t,const char *,int),
231 if (m != NULL) *m = (malloc_locked_ex_func != default_malloc_locked_ex) ?
232 malloc_locked_ex_func : 0;
233 if (f != NULL) *f=free_locked_func;
236 void CRYPTO_get_mem_debug_functions(void (**m)(void *,int,const char *,int,int),
237 void (**r)(void *,void *,int,const char *,int,int),
238 void (**f)(void *,int),
242 if (m != NULL) *m=malloc_debug_func;
243 if (r != NULL) *r=realloc_debug_func;
244 if (f != NULL) *f=free_debug_func;
245 if (so != NULL) *so=set_debug_options_func;
246 if (go != NULL) *go=get_debug_options_func;
250 void *CRYPTO_malloc_locked(int num, const char *file, int line)
255 if (malloc_debug_func != NULL)
257 allow_customize_debug = 0;
258 malloc_debug_func(NULL, num, file, line, 0);
260 ret = malloc_locked_ex_func(num,file,line);
261 #ifdef LEVITTE_DEBUG_MEM
262 fprintf(stderr, "LEVITTE_DEBUG_MEM: > 0x%p (%d)\n", ret, num);
264 if (malloc_debug_func != NULL)
265 malloc_debug_func(ret, num, file, line, 1);
270 void CRYPTO_free_locked(void *str)
272 if (free_debug_func != NULL)
273 free_debug_func(str, 0);
274 #ifdef LEVITTE_DEBUG_MEM
275 fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str);
277 free_locked_func(str);
278 if (free_debug_func != NULL)
279 free_debug_func(NULL, 1);
282 void *CRYPTO_malloc(int num, const char *file, int line)
287 if (malloc_debug_func != NULL)
289 allow_customize_debug = 0;
290 malloc_debug_func(NULL, num, file, line, 0);
292 ret = malloc_ex_func(num,file,line);
293 #ifdef LEVITTE_DEBUG_MEM
294 fprintf(stderr, "LEVITTE_DEBUG_MEM: > 0x%p (%d)\n", ret, num);
296 if (malloc_debug_func != NULL)
297 malloc_debug_func(ret, num, file, line, 1);
302 void *CRYPTO_realloc(void *str, int num, const char *file, int line)
306 if (realloc_debug_func != NULL)
307 realloc_debug_func(str, NULL, num, file, line, 0);
308 ret = realloc_ex_func(str,num,file,line);
309 #ifdef LEVITTE_DEBUG_MEM
310 fprintf(stderr, "LEVITTE_DEBUG_MEM: | 0x%p -> 0x%p (%d)\n", str, ret, num);
312 if (realloc_debug_func != NULL)
313 realloc_debug_func(str, ret, num, file, line, 1);
318 void CRYPTO_free(void *str)
320 if (free_debug_func != NULL)
321 free_debug_func(str, 0);
322 #ifdef LEVITTE_DEBUG_MEM
323 fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str);
326 if (free_debug_func != NULL)
327 free_debug_func(NULL, 1);
330 void *CRYPTO_remalloc(void *a, int num, const char *file, int line)
332 if (a != NULL) OPENSSL_free(a);
333 a=(char *)OPENSSL_malloc(num);
338 void CRYPTO_set_mem_debug_options(long bits)
340 if (set_debug_options_func != NULL)
341 set_debug_options_func(bits);
344 long CRYPTO_get_mem_debug_options(void)
346 if (get_debug_options_func != NULL)
347 return get_debug_options_func();