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| 1 /* crypto/mem.c */ | |
| 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
| 3 * All rights reserved. | |
| 4 * | |
| 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. | |
| 8 * | |
| 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). | |
| 15 * | |
| 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. | |
| 22 * | |
| 23 * Redistribution and use in source and binary forms, with or without | |
| 24 * modification, are permitted provided that the following conditions | |
| 25 * are met: | |
| 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)" | |
| 40 * | |
| 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 | |
| 51 * SUCH DAMAGE. | |
| 52 * | |
| 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.] | |
| 57 */ | |
| 58 | |
| 59 #include <stdio.h> | |
| 60 #include <stdlib.h> | |
| 61 #include <openssl/crypto.h> | |
| 62 #include "cryptlib.h" | |
| 63 | |
| 64 | |
| 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 | |
| 71 * don't match etc. */ | |
| 72 | |
| 73 | |
| 74 | |
| 75 /* the following pointers may be changed as long as 'allow_customize' is set */ | |
| 76 | |
| 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) | |
| 81 = default_malloc_ex; | |
| 82 | |
| 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) | |
| 88 = default_realloc_ex; | |
| 89 | |
| 90 static void (*free_func)(void *) = free; | |
| 91 | |
| 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; | |
| 97 | |
| 98 static void (*free_locked_func)(void *) = free; | |
| 99 | |
| 100 | |
| 101 | |
| 102 /* may be changed as long as 'allow_customize_debug' is set */ | |
| 103 /* XXX use correct function pointer types */ | |
| 104 #ifdef CRYPTO_MDEBUG | |
| 105 /* use default functions from mem_dbg.c */ | |
| 106 static void (*malloc_debug_func)(void *,int,const char *,int,int) | |
| 107 = CRYPTO_dbg_malloc; | |
| 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; | |
| 113 #else | |
| 114 /* applications can use CRYPTO_malloc_debug_init() to select above case | |
| 115 * at run-time */ | |
| 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) | |
| 118 = NULL; | |
| 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; | |
| 122 #endif | |
| 123 | |
| 124 int CRYPTO_set_mem_functions(void *(*m)(size_t), void *(*r)(void *, size_t), | |
| 125 void (*f)(void *)) | |
| 126 { | |
| 127 /* Dummy call just to ensure OPENSSL_init() gets linked in */ | |
| 128 OPENSSL_init(); | |
| 129 if (!allow_customize) | |
| 130 return 0; | |
| 131 if ((m == 0) || (r == 0) || (f == 0)) | |
| 132 return 0; | |
| 133 malloc_func=m; malloc_ex_func=default_malloc_ex; | |
| 134 realloc_func=r; realloc_ex_func=default_realloc_ex; | |
| 135 free_func=f; | |
| 136 malloc_locked_func=m; malloc_locked_ex_func=default_malloc_locked_ex; | |
| 137 free_locked_func=f; | |
| 138 return 1; | |
| 139 } | |
| 140 | |
| 141 int CRYPTO_set_mem_ex_functions( | |
| 142 void *(*m)(size_t,const char *,int), | |
| 143 void *(*r)(void *, size_t,const char *,int), | |
| 144 void (*f)(void *)) | |
| 145 { | |
| 146 if (!allow_customize) | |
| 147 return 0; | |
| 148 if ((m == 0) || (r == 0) || (f == 0)) | |
| 149 return 0; | |
| 150 malloc_func=0; malloc_ex_func=m; | |
| 151 realloc_func=0; realloc_ex_func=r; | |
| 152 free_func=f; | |
| 153 malloc_locked_func=0; malloc_locked_ex_func=m; | |
| 154 free_locked_func=f; | |
| 155 return 1; | |
| 156 } | |
| 157 | |
| 158 int CRYPTO_set_locked_mem_functions(void *(*m)(size_t), void (*f)(void *)) | |
| 159 { | |
| 160 if (!allow_customize) | |
| 161 return 0; | |
| 162 if ((m == NULL) || (f == NULL)) | |
| 163 return 0; | |
| 164 malloc_locked_func=m; malloc_locked_ex_func=default_malloc_locked_ex; | |
| 165 free_locked_func=f; | |
| 166 return 1; | |
| 167 } | |
| 168 | |
| 169 int CRYPTO_set_locked_mem_ex_functions( | |
| 170 void *(*m)(size_t,const char *,int), | |
| 171 void (*f)(void *)) | |
| 172 { | |
| 173 if (!allow_customize) | |
| 174 return 0; | |
| 175 if ((m == NULL) || (f == NULL)) | |
| 176 return 0; | |
| 177 malloc_locked_func=0; malloc_locked_ex_func=m; | |
| 178 free_func=f; | |
| 179 return 1; | |
| 180 } | |
| 181 | |
| 182 int CRYPTO_set_mem_debug_functions(void (*m)(void *,int,const char *,int,int), | |
| 183 void (*r)(void *,void *,int,const char *,int,
int), | |
| 184 void (*f)(void *,int), | |
| 185 void (*so)(long), | |
| 186 long (*go)(void)) | |
| 187 { | |
| 188 if (!allow_customize_debug) | |
| 189 return 0; | |
| 190 OPENSSL_init(); | |
| 191 malloc_debug_func=m; | |
| 192 realloc_debug_func=r; | |
| 193 free_debug_func=f; | |
| 194 set_debug_options_func=so; | |
| 195 get_debug_options_func=go; | |
| 196 return 1; | |
| 197 } | |
| 198 | |
| 199 | |
| 200 void CRYPTO_get_mem_functions(void *(**m)(size_t), void *(**r)(void *, size_t), | |
| 201 void (**f)(void *)) | |
| 202 { | |
| 203 if (m != NULL) *m = (malloc_ex_func == default_malloc_ex) ? | |
| 204 malloc_func : 0; | |
| 205 if (r != NULL) *r = (realloc_ex_func == default_realloc_ex) ? | |
| 206 realloc_func : 0; | |
| 207 if (f != NULL) *f=free_func; | |
| 208 } | |
| 209 | |
| 210 void CRYPTO_get_mem_ex_functions( | |
| 211 void *(**m)(size_t,const char *,int), | |
| 212 void *(**r)(void *, size_t,const char *,int), | |
| 213 void (**f)(void *)) | |
| 214 { | |
| 215 if (m != NULL) *m = (malloc_ex_func != default_malloc_ex) ? | |
| 216 malloc_ex_func : 0; | |
| 217 if (r != NULL) *r = (realloc_ex_func != default_realloc_ex) ? | |
| 218 realloc_ex_func : 0; | |
| 219 if (f != NULL) *f=free_func; | |
| 220 } | |
| 221 | |
| 222 void CRYPTO_get_locked_mem_functions(void *(**m)(size_t), void (**f)(void *)) | |
| 223 { | |
| 224 if (m != NULL) *m = (malloc_locked_ex_func == default_malloc_locked_ex)
? | |
| 225 malloc_locked_func : 0; | |
| 226 if (f != NULL) *f=free_locked_func; | |
| 227 } | |
| 228 | |
| 229 void CRYPTO_get_locked_mem_ex_functions( | |
| 230 void *(**m)(size_t,const char *,int), | |
| 231 void (**f)(void *)) | |
| 232 { | |
| 233 if (m != NULL) *m = (malloc_locked_ex_func != default_malloc_locked_ex)
? | |
| 234 malloc_locked_ex_func : 0; | |
| 235 if (f != NULL) *f=free_locked_func; | |
| 236 } | |
| 237 | |
| 238 void CRYPTO_get_mem_debug_functions(void (**m)(void *,int,const char *,int,int), | |
| 239 void (**r)(void *,void *,int,const char *,in
t,int), | |
| 240 void (**f)(void *,int), | |
| 241 void (**so)(long), | |
| 242 long (**go)(void)) | |
| 243 { | |
| 244 if (m != NULL) *m=malloc_debug_func; | |
| 245 if (r != NULL) *r=realloc_debug_func; | |
| 246 if (f != NULL) *f=free_debug_func; | |
| 247 if (so != NULL) *so=set_debug_options_func; | |
| 248 if (go != NULL) *go=get_debug_options_func; | |
| 249 } | |
| 250 | |
| 251 | |
| 252 void *CRYPTO_malloc_locked(int num, const char *file, int line) | |
| 253 { | |
| 254 void *ret = NULL; | |
| 255 | |
| 256 if (num <= 0) return NULL; | |
| 257 | |
| 258 allow_customize = 0; | |
| 259 if (malloc_debug_func != NULL) | |
| 260 { | |
| 261 allow_customize_debug = 0; | |
| 262 malloc_debug_func(NULL, num, file, line, 0); | |
| 263 } | |
| 264 ret = malloc_locked_ex_func(num,file,line); | |
| 265 #ifdef LEVITTE_DEBUG_MEM | |
| 266 fprintf(stderr, "LEVITTE_DEBUG_MEM: > 0x%p (%d)\n", ret, num); | |
| 267 #endif | |
| 268 if (malloc_debug_func != NULL) | |
| 269 malloc_debug_func(ret, num, file, line, 1); | |
| 270 | |
| 271 #ifndef OPENSSL_CPUID_OBJ | |
| 272 /* Create a dependency on the value of 'cleanse_ctr' so our memory | |
| 273 * sanitisation function can't be optimised out. NB: We only do | |
| 274 * this for >2Kb so the overhead doesn't bother us. */ | |
| 275 if(ret && (num > 2048)) | |
| 276 { extern unsigned char cleanse_ctr; | |
| 277 ((unsigned char *)ret)[0] = cleanse_ctr; | |
| 278 } | |
| 279 #endif | |
| 280 | |
| 281 return ret; | |
| 282 } | |
| 283 | |
| 284 void CRYPTO_free_locked(void *str) | |
| 285 { | |
| 286 if (free_debug_func != NULL) | |
| 287 free_debug_func(str, 0); | |
| 288 #ifdef LEVITTE_DEBUG_MEM | |
| 289 fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str); | |
| 290 #endif | |
| 291 free_locked_func(str); | |
| 292 if (free_debug_func != NULL) | |
| 293 free_debug_func(NULL, 1); | |
| 294 } | |
| 295 | |
| 296 void *CRYPTO_malloc(int num, const char *file, int line) | |
| 297 { | |
| 298 void *ret = NULL; | |
| 299 | |
| 300 if (num <= 0) return NULL; | |
| 301 | |
| 302 allow_customize = 0; | |
| 303 if (malloc_debug_func != NULL) | |
| 304 { | |
| 305 allow_customize_debug = 0; | |
| 306 malloc_debug_func(NULL, num, file, line, 0); | |
| 307 } | |
| 308 ret = malloc_ex_func(num,file,line); | |
| 309 #ifdef LEVITTE_DEBUG_MEM | |
| 310 fprintf(stderr, "LEVITTE_DEBUG_MEM: > 0x%p (%d)\n", ret, num); | |
| 311 #endif | |
| 312 if (malloc_debug_func != NULL) | |
| 313 malloc_debug_func(ret, num, file, line, 1); | |
| 314 | |
| 315 #ifndef OPENSSL_CPUID_OBJ | |
| 316 /* Create a dependency on the value of 'cleanse_ctr' so our memory | |
| 317 * sanitisation function can't be optimised out. NB: We only do | |
| 318 * this for >2Kb so the overhead doesn't bother us. */ | |
| 319 if(ret && (num > 2048)) | |
| 320 { extern unsigned char cleanse_ctr; | |
| 321 ((unsigned char *)ret)[0] = cleanse_ctr; | |
| 322 } | |
| 323 #endif | |
| 324 | |
| 325 return ret; | |
| 326 } | |
| 327 char *CRYPTO_strdup(const char *str, const char *file, int line) | |
| 328 { | |
| 329 char *ret = CRYPTO_malloc(strlen(str)+1, file, line); | |
| 330 | |
| 331 strcpy(ret, str); | |
| 332 return ret; | |
| 333 } | |
| 334 | |
| 335 void *CRYPTO_realloc(void *str, int num, const char *file, int line) | |
| 336 { | |
| 337 void *ret = NULL; | |
| 338 | |
| 339 if (str == NULL) | |
| 340 return CRYPTO_malloc(num, file, line); | |
| 341 | |
| 342 if (num <= 0) return NULL; | |
| 343 | |
| 344 if (realloc_debug_func != NULL) | |
| 345 realloc_debug_func(str, NULL, num, file, line, 0); | |
| 346 ret = realloc_ex_func(str,num,file,line); | |
| 347 #ifdef LEVITTE_DEBUG_MEM | |
| 348 fprintf(stderr, "LEVITTE_DEBUG_MEM: | 0x%p -> 0x%p (%d)\n", str,
ret, num); | |
| 349 #endif | |
| 350 if (realloc_debug_func != NULL) | |
| 351 realloc_debug_func(str, ret, num, file, line, 1); | |
| 352 | |
| 353 return ret; | |
| 354 } | |
| 355 | |
| 356 void *CRYPTO_realloc_clean(void *str, int old_len, int num, const char *file, | |
| 357 int line) | |
| 358 { | |
| 359 void *ret = NULL; | |
| 360 | |
| 361 if (str == NULL) | |
| 362 return CRYPTO_malloc(num, file, line); | |
| 363 | |
| 364 if (num <= 0) return NULL; | |
| 365 | |
| 366 /* We don't support shrinking the buffer. Note the memcpy that copies | |
| 367 * |old_len| bytes to the new buffer, below. */ | |
| 368 if (num < old_len) return NULL; | |
| 369 | |
| 370 if (realloc_debug_func != NULL) | |
| 371 realloc_debug_func(str, NULL, num, file, line, 0); | |
| 372 ret=malloc_ex_func(num,file,line); | |
| 373 if(ret) | |
| 374 { | |
| 375 memcpy(ret,str,old_len); | |
| 376 OPENSSL_cleanse(str,old_len); | |
| 377 free_func(str); | |
| 378 } | |
| 379 #ifdef LEVITTE_DEBUG_MEM | |
| 380 fprintf(stderr, | |
| 381 "LEVITTE_DEBUG_MEM: | 0x%p -> 0x%p (%d)\n", | |
| 382 str, ret, num); | |
| 383 #endif | |
| 384 if (realloc_debug_func != NULL) | |
| 385 realloc_debug_func(str, ret, num, file, line, 1); | |
| 386 | |
| 387 return ret; | |
| 388 } | |
| 389 | |
| 390 void CRYPTO_free(void *str) | |
| 391 { | |
| 392 if (free_debug_func != NULL) | |
| 393 free_debug_func(str, 0); | |
| 394 #ifdef LEVITTE_DEBUG_MEM | |
| 395 fprintf(stderr, "LEVITTE_DEBUG_MEM: < 0x%p\n", str); | |
| 396 #endif | |
| 397 free_func(str); | |
| 398 if (free_debug_func != NULL) | |
| 399 free_debug_func(NULL, 1); | |
| 400 } | |
| 401 | |
| 402 void *CRYPTO_remalloc(void *a, int num, const char *file, int line) | |
| 403 { | |
| 404 if (a != NULL) OPENSSL_free(a); | |
| 405 a=(char *)OPENSSL_malloc(num); | |
| 406 return(a); | |
| 407 } | |
| 408 | |
| 409 void CRYPTO_set_mem_debug_options(long bits) | |
| 410 { | |
| 411 if (set_debug_options_func != NULL) | |
| 412 set_debug_options_func(bits); | |
| 413 } | |
| 414 | |
| 415 long CRYPTO_get_mem_debug_options(void) | |
| 416 { | |
| 417 if (get_debug_options_func != NULL) | |
| 418 return get_debug_options_func(); | |
| 419 return 0; | |
| 420 } | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master