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| 1 /* crypto/mem_dbg.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 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. | |
| 60 * | |
| 61 * Redistribution and use in source and binary forms, with or without | |
| 62 * modification, are permitted provided that the following conditions | |
| 63 * are met: | |
| 64 * | |
| 65 * 1. Redistributions of source code must retain the above copyright | |
| 66 * notice, this list of conditions and the following disclaimer. | |
| 67 * | |
| 68 * 2. Redistributions in binary form must reproduce the above copyright | |
| 69 * notice, this list of conditions and the following disclaimer in | |
| 70 * the documentation and/or other materials provided with the | |
| 71 * distribution. | |
| 72 * | |
| 73 * 3. All advertising materials mentioning features or use of this | |
| 74 * software must display the following acknowledgment: | |
| 75 * "This product includes software developed by the OpenSSL Project | |
| 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
| 77 * | |
| 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
| 79 * endorse or promote products derived from this software without | |
| 80 * prior written permission. For written permission, please contact | |
| 81 * openssl-core@openssl.org. | |
| 82 * | |
| 83 * 5. Products derived from this software may not be called "OpenSSL" | |
| 84 * nor may "OpenSSL" appear in their names without prior written | |
| 85 * permission of the OpenSSL Project. | |
| 86 * | |
| 87 * 6. Redistributions of any form whatsoever must retain the following | |
| 88 * acknowledgment: | |
| 89 * "This product includes software developed by the OpenSSL Project | |
| 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
| 91 * | |
| 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
| 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
| 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
| 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
| 103 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 104 * ==================================================================== | |
| 105 * | |
| 106 * This product includes cryptographic software written by Eric Young | |
| 107 * (eay@cryptsoft.com). This product includes software written by Tim | |
| 108 * Hudson (tjh@cryptsoft.com). | |
| 109 * | |
| 110 */ | |
| 111 | |
| 112 #include <stdio.h> | |
| 113 #include <stdlib.h> | |
| 114 #include <time.h> | |
| 115 #include "cryptlib.h" | |
| 116 #include <openssl/crypto.h> | |
| 117 #include <openssl/buffer.h> | |
| 118 #include <openssl/bio.h> | |
| 119 #include <openssl/lhash.h> | |
| 120 | |
| 121 static int mh_mode=CRYPTO_MEM_CHECK_OFF; | |
| 122 /* The state changes to CRYPTO_MEM_CHECK_ON | CRYPTO_MEM_CHECK_ENABLE | |
| 123 * when the application asks for it (usually after library initialisation | |
| 124 * for which no book-keeping is desired). | |
| 125 * | |
| 126 * State CRYPTO_MEM_CHECK_ON exists only temporarily when the library | |
| 127 * thinks that certain allocations should not be checked (e.g. the data | |
| 128 * structures used for memory checking). It is not suitable as an initial | |
| 129 * state: the library will unexpectedly enable memory checking when it | |
| 130 * executes one of those sections that want to disable checking | |
| 131 * temporarily. | |
| 132 * | |
| 133 * State CRYPTO_MEM_CHECK_ENABLE without ..._ON makes no sense whatsoever. | |
| 134 */ | |
| 135 | |
| 136 static unsigned long order = 0; /* number of memory requests */ | |
| 137 | |
| 138 DECLARE_LHASH_OF(MEM); | |
| 139 static LHASH_OF(MEM) *mh=NULL; /* hash-table of memory requests | |
| 140 * (address as key); access requires | |
| 141 * MALLOC2 lock */ | |
| 142 | |
| 143 | |
| 144 typedef struct app_mem_info_st | |
| 145 /* For application-defined information (static C-string `info') | |
| 146 * to be displayed in memory leak list. | |
| 147 * Each thread has its own stack. For applications, there is | |
| 148 * CRYPTO_push_info("...") to push an entry, | |
| 149 * CRYPTO_pop_info() to pop an entry, | |
| 150 * CRYPTO_remove_all_info() to pop all entries. | |
| 151 */ | |
| 152 { | |
| 153 CRYPTO_THREADID threadid; | |
| 154 const char *file; | |
| 155 int line; | |
| 156 const char *info; | |
| 157 struct app_mem_info_st *next; /* tail of thread's stack */ | |
| 158 int references; | |
| 159 } APP_INFO; | |
| 160 | |
| 161 static void app_info_free(APP_INFO *); | |
| 162 | |
| 163 DECLARE_LHASH_OF(APP_INFO); | |
| 164 static LHASH_OF(APP_INFO) *amih=NULL; /* hash-table with those | |
| 165 * app_mem_info_st's that are at | |
| 166 * the top of their thread's | |
| 167 * stack (with `thread' as key); | |
| 168 * access requires MALLOC2 | |
| 169 * lock */ | |
| 170 | |
| 171 typedef struct mem_st | |
| 172 /* memory-block description */ | |
| 173 { | |
| 174 void *addr; | |
| 175 int num; | |
| 176 const char *file; | |
| 177 int line; | |
| 178 CRYPTO_THREADID threadid; | |
| 179 unsigned long order; | |
| 180 time_t time; | |
| 181 APP_INFO *app_info; | |
| 182 } MEM; | |
| 183 | |
| 184 static long options = /* extra information to be recorded */ | |
| 185 #if defined(CRYPTO_MDEBUG_TIME) || defined(CRYPTO_MDEBUG_ALL) | |
| 186 V_CRYPTO_MDEBUG_TIME | | |
| 187 #endif | |
| 188 #if defined(CRYPTO_MDEBUG_THREAD) || defined(CRYPTO_MDEBUG_ALL) | |
| 189 V_CRYPTO_MDEBUG_THREAD | | |
| 190 #endif | |
| 191 0; | |
| 192 | |
| 193 | |
| 194 static unsigned int num_disable = 0; /* num_disable > 0 | |
| 195 * iff | |
| 196 * mh_mode == CRYPTO_MEM_CHECK_ON (w/o ..._
ENABLE) | |
| 197 */ | |
| 198 | |
| 199 /* Valid iff num_disable > 0. CRYPTO_LOCK_MALLOC2 is locked exactly in this | |
| 200 * case (by the thread named in disabling_thread). | |
| 201 */ | |
| 202 static CRYPTO_THREADID disabling_threadid; | |
| 203 | |
| 204 static void app_info_free(APP_INFO *inf) | |
| 205 { | |
| 206 if (--(inf->references) <= 0) | |
| 207 { | |
| 208 if (inf->next != NULL) | |
| 209 { | |
| 210 app_info_free(inf->next); | |
| 211 } | |
| 212 OPENSSL_free(inf); | |
| 213 } | |
| 214 } | |
| 215 | |
| 216 int CRYPTO_mem_ctrl(int mode) | |
| 217 { | |
| 218 int ret=mh_mode; | |
| 219 | |
| 220 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC); | |
| 221 switch (mode) | |
| 222 { | |
| 223 /* for applications (not to be called while multiple threads | |
| 224 * use the library): */ | |
| 225 case CRYPTO_MEM_CHECK_ON: /* aka MemCheck_start() */ | |
| 226 mh_mode = CRYPTO_MEM_CHECK_ON|CRYPTO_MEM_CHECK_ENABLE; | |
| 227 num_disable = 0; | |
| 228 break; | |
| 229 case CRYPTO_MEM_CHECK_OFF: /* aka MemCheck_stop() */ | |
| 230 mh_mode = 0; | |
| 231 num_disable = 0; /* should be true *before* MemCheck_stop is use
d, | |
| 232 or there'll be a lot of confusion */ | |
| 233 break; | |
| 234 | |
| 235 /* switch off temporarily (for library-internal use): */ | |
| 236 case CRYPTO_MEM_CHECK_DISABLE: /* aka MemCheck_off() */ | |
| 237 if (mh_mode & CRYPTO_MEM_CHECK_ON) | |
| 238 { | |
| 239 CRYPTO_THREADID cur; | |
| 240 CRYPTO_THREADID_current(&cur); | |
| 241 if (!num_disable || CRYPTO_THREADID_cmp(&disabling_threa
did, &cur)) /* otherwise we already have the MALLOC2 lock */ | |
| 242 { | |
| 243 /* Long-time lock CRYPTO_LOCK_MALLOC2 must not b
e claimed while | |
| 244 * we're holding CRYPTO_LOCK_MALLOC, or we'll de
adlock if | |
| 245 * somebody else holds CRYPTO_LOCK_MALLOC2 (and
cannot release | |
| 246 * it because we block entry to this function). | |
| 247 * Give them a chance, first, and then claim the
locks in | |
| 248 * appropriate order (long-time lock first). | |
| 249 */ | |
| 250 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC); | |
| 251 /* Note that after we have waited for CRYPTO_LOC
K_MALLOC2 | |
| 252 * and CRYPTO_LOCK_MALLOC, we'll still be in the
right | |
| 253 * "case" and "if" branch because MemCheck_start
and | |
| 254 * MemCheck_stop may never be used while there a
re multiple | |
| 255 * OpenSSL threads. */ | |
| 256 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2); | |
| 257 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC); | |
| 258 mh_mode &= ~CRYPTO_MEM_CHECK_ENABLE; | |
| 259 CRYPTO_THREADID_cpy(&disabling_threadid, &cur); | |
| 260 } | |
| 261 num_disable++; | |
| 262 } | |
| 263 break; | |
| 264 case CRYPTO_MEM_CHECK_ENABLE: /* aka MemCheck_on() */ | |
| 265 if (mh_mode & CRYPTO_MEM_CHECK_ON) | |
| 266 { | |
| 267 if (num_disable) /* always true, or something is going w
rong */ | |
| 268 { | |
| 269 num_disable--; | |
| 270 if (num_disable == 0) | |
| 271 { | |
| 272 mh_mode|=CRYPTO_MEM_CHECK_ENABLE; | |
| 273 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2); | |
| 274 } | |
| 275 } | |
| 276 } | |
| 277 break; | |
| 278 | |
| 279 default: | |
| 280 break; | |
| 281 } | |
| 282 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC); | |
| 283 return(ret); | |
| 284 } | |
| 285 | |
| 286 int CRYPTO_is_mem_check_on(void) | |
| 287 { | |
| 288 int ret = 0; | |
| 289 | |
| 290 if (mh_mode & CRYPTO_MEM_CHECK_ON) | |
| 291 { | |
| 292 CRYPTO_THREADID cur; | |
| 293 CRYPTO_THREADID_current(&cur); | |
| 294 CRYPTO_r_lock(CRYPTO_LOCK_MALLOC); | |
| 295 | |
| 296 ret = (mh_mode & CRYPTO_MEM_CHECK_ENABLE) | |
| 297 || CRYPTO_THREADID_cmp(&disabling_threadid, &cur); | |
| 298 | |
| 299 CRYPTO_r_unlock(CRYPTO_LOCK_MALLOC); | |
| 300 } | |
| 301 return(ret); | |
| 302 } | |
| 303 | |
| 304 | |
| 305 void CRYPTO_dbg_set_options(long bits) | |
| 306 { | |
| 307 options = bits; | |
| 308 } | |
| 309 | |
| 310 long CRYPTO_dbg_get_options(void) | |
| 311 { | |
| 312 return options; | |
| 313 } | |
| 314 | |
| 315 static int mem_cmp(const MEM *a, const MEM *b) | |
| 316 { | |
| 317 #ifdef _WIN64 | |
| 318 const char *ap=(const char *)a->addr, | |
| 319 *bp=(const char *)b->addr; | |
| 320 if (ap==bp) return 0; | |
| 321 else if (ap>bp) return 1; | |
| 322 else return -1; | |
| 323 #else | |
| 324 return (const char *)a->addr - (const char *)b->addr; | |
| 325 #endif | |
| 326 } | |
| 327 static IMPLEMENT_LHASH_COMP_FN(mem, MEM) | |
| 328 | |
| 329 static unsigned long mem_hash(const MEM *a) | |
| 330 { | |
| 331 unsigned long ret; | |
| 332 | |
| 333 ret=(unsigned long)a->addr; | |
| 334 | |
| 335 ret=ret*17851+(ret>>14)*7+(ret>>4)*251; | |
| 336 return(ret); | |
| 337 } | |
| 338 static IMPLEMENT_LHASH_HASH_FN(mem, MEM) | |
| 339 | |
| 340 /* static int app_info_cmp(APP_INFO *a, APP_INFO *b) */ | |
| 341 static int app_info_cmp(const void *a_void, const void *b_void) | |
| 342 { | |
| 343 return CRYPTO_THREADID_cmp(&((const APP_INFO *)a_void)->threadid, | |
| 344 &((const APP_INFO *)b_void)->threadid); | |
| 345 } | |
| 346 static IMPLEMENT_LHASH_COMP_FN(app_info, APP_INFO) | |
| 347 | |
| 348 static unsigned long app_info_hash(const APP_INFO *a) | |
| 349 { | |
| 350 unsigned long ret; | |
| 351 | |
| 352 ret = CRYPTO_THREADID_hash(&a->threadid); | |
| 353 /* This is left in as a "who am I to question legacy?" measure */ | |
| 354 ret=ret*17851+(ret>>14)*7+(ret>>4)*251; | |
| 355 return(ret); | |
| 356 } | |
| 357 static IMPLEMENT_LHASH_HASH_FN(app_info, APP_INFO) | |
| 358 | |
| 359 static APP_INFO *pop_info(void) | |
| 360 { | |
| 361 APP_INFO tmp; | |
| 362 APP_INFO *ret = NULL; | |
| 363 | |
| 364 if (amih != NULL) | |
| 365 { | |
| 366 CRYPTO_THREADID_current(&tmp.threadid); | |
| 367 if ((ret=lh_APP_INFO_delete(amih,&tmp)) != NULL) | |
| 368 { | |
| 369 APP_INFO *next=ret->next; | |
| 370 | |
| 371 if (next != NULL) | |
| 372 { | |
| 373 next->references++; | |
| 374 (void)lh_APP_INFO_insert(amih,next); | |
| 375 } | |
| 376 #ifdef LEVITTE_DEBUG_MEM | |
| 377 if (CRYPTO_THREADID_cmp(&ret->threadid, &tmp.threadid)) | |
| 378 { | |
| 379 fprintf(stderr, "pop_info(): deleted info has ot
her thread ID (%lu) than the current thread (%lu)!!!!\n", | |
| 380 CRYPTO_THREADID_hash(&ret->threadid), | |
| 381 CRYPTO_THREADID_hash(&tmp.threadid)); | |
| 382 abort(); | |
| 383 } | |
| 384 #endif | |
| 385 if (--(ret->references) <= 0) | |
| 386 { | |
| 387 ret->next = NULL; | |
| 388 if (next != NULL) | |
| 389 next->references--; | |
| 390 OPENSSL_free(ret); | |
| 391 } | |
| 392 } | |
| 393 } | |
| 394 return(ret); | |
| 395 } | |
| 396 | |
| 397 int CRYPTO_push_info_(const char *info, const char *file, int line) | |
| 398 { | |
| 399 APP_INFO *ami, *amim; | |
| 400 int ret=0; | |
| 401 | |
| 402 if (is_MemCheck_on()) | |
| 403 { | |
| 404 MemCheck_off(); /* obtain MALLOC2 lock */ | |
| 405 | |
| 406 if ((ami = (APP_INFO *)OPENSSL_malloc(sizeof(APP_INFO))) == NULL
) | |
| 407 { | |
| 408 ret=0; | |
| 409 goto err; | |
| 410 } | |
| 411 if (amih == NULL) | |
| 412 { | |
| 413 if ((amih=lh_APP_INFO_new()) == NULL) | |
| 414 { | |
| 415 OPENSSL_free(ami); | |
| 416 ret=0; | |
| 417 goto err; | |
| 418 } | |
| 419 } | |
| 420 | |
| 421 CRYPTO_THREADID_current(&ami->threadid); | |
| 422 ami->file=file; | |
| 423 ami->line=line; | |
| 424 ami->info=info; | |
| 425 ami->references=1; | |
| 426 ami->next=NULL; | |
| 427 | |
| 428 if ((amim=lh_APP_INFO_insert(amih,ami)) != NULL) | |
| 429 { | |
| 430 #ifdef LEVITTE_DEBUG_MEM | |
| 431 if (CRYPTO_THREADID_cmp(&ami->threadid, &amim->threadid)
) | |
| 432 { | |
| 433 fprintf(stderr, "CRYPTO_push_info(): previous in
fo has other thread ID (%lu) than the current thread (%lu)!!!!\n", | |
| 434 CRYPTO_THREADID_hash(&amim->threadid), | |
| 435 CRYPTO_THREADID_hash(&ami->threadid)); | |
| 436 abort(); | |
| 437 } | |
| 438 #endif | |
| 439 ami->next=amim; | |
| 440 } | |
| 441 err: | |
| 442 MemCheck_on(); /* release MALLOC2 lock */ | |
| 443 } | |
| 444 | |
| 445 return(ret); | |
| 446 } | |
| 447 | |
| 448 int CRYPTO_pop_info(void) | |
| 449 { | |
| 450 int ret=0; | |
| 451 | |
| 452 if (is_MemCheck_on()) /* _must_ be true, or something went severely wron
g */ | |
| 453 { | |
| 454 MemCheck_off(); /* obtain MALLOC2 lock */ | |
| 455 | |
| 456 ret=(pop_info() != NULL); | |
| 457 | |
| 458 MemCheck_on(); /* release MALLOC2 lock */ | |
| 459 } | |
| 460 return(ret); | |
| 461 } | |
| 462 | |
| 463 int CRYPTO_remove_all_info(void) | |
| 464 { | |
| 465 int ret=0; | |
| 466 | |
| 467 if (is_MemCheck_on()) /* _must_ be true */ | |
| 468 { | |
| 469 MemCheck_off(); /* obtain MALLOC2 lock */ | |
| 470 | |
| 471 while(pop_info() != NULL) | |
| 472 ret++; | |
| 473 | |
| 474 MemCheck_on(); /* release MALLOC2 lock */ | |
| 475 } | |
| 476 return(ret); | |
| 477 } | |
| 478 | |
| 479 | |
| 480 static unsigned long break_order_num=0; | |
| 481 void CRYPTO_dbg_malloc(void *addr, int num, const char *file, int line, | |
| 482 int before_p) | |
| 483 { | |
| 484 MEM *m,*mm; | |
| 485 APP_INFO tmp,*amim; | |
| 486 | |
| 487 switch(before_p & 127) | |
| 488 { | |
| 489 case 0: | |
| 490 break; | |
| 491 case 1: | |
| 492 if (addr == NULL) | |
| 493 break; | |
| 494 | |
| 495 if (is_MemCheck_on()) | |
| 496 { | |
| 497 MemCheck_off(); /* make sure we hold MALLOC2 lock */ | |
| 498 if ((m=(MEM *)OPENSSL_malloc(sizeof(MEM))) == NULL) | |
| 499 { | |
| 500 OPENSSL_free(addr); | |
| 501 MemCheck_on(); /* release MALLOC2 lock | |
| 502 * if num_disabled drops to 0 */ | |
| 503 return; | |
| 504 } | |
| 505 if (mh == NULL) | |
| 506 { | |
| 507 if ((mh=lh_MEM_new()) == NULL) | |
| 508 { | |
| 509 OPENSSL_free(addr); | |
| 510 OPENSSL_free(m); | |
| 511 addr=NULL; | |
| 512 goto err; | |
| 513 } | |
| 514 } | |
| 515 | |
| 516 m->addr=addr; | |
| 517 m->file=file; | |
| 518 m->line=line; | |
| 519 m->num=num; | |
| 520 if (options & V_CRYPTO_MDEBUG_THREAD) | |
| 521 CRYPTO_THREADID_current(&m->threadid); | |
| 522 else | |
| 523 memset(&m->threadid, 0, sizeof(m->threadid)); | |
| 524 | |
| 525 if (order == break_order_num) | |
| 526 { | |
| 527 /* BREAK HERE */ | |
| 528 m->order=order; | |
| 529 } | |
| 530 m->order=order++; | |
| 531 #ifdef LEVITTE_DEBUG_MEM | |
| 532 fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5ld] %c 0x%p (%d)\
n", | |
| 533 m->order, | |
| 534 (before_p & 128) ? '*' : '+', | |
| 535 m->addr, m->num); | |
| 536 #endif | |
| 537 if (options & V_CRYPTO_MDEBUG_TIME) | |
| 538 m->time=time(NULL); | |
| 539 else | |
| 540 m->time=0; | |
| 541 | |
| 542 CRYPTO_THREADID_current(&tmp.threadid); | |
| 543 m->app_info=NULL; | |
| 544 if (amih != NULL | |
| 545 && (amim=lh_APP_INFO_retrieve(amih,&tmp)) != NULL) | |
| 546 { | |
| 547 m->app_info = amim; | |
| 548 amim->references++; | |
| 549 } | |
| 550 | |
| 551 if ((mm=lh_MEM_insert(mh, m)) != NULL) | |
| 552 { | |
| 553 /* Not good, but don't sweat it */ | |
| 554 if (mm->app_info != NULL) | |
| 555 { | |
| 556 mm->app_info->references--; | |
| 557 } | |
| 558 OPENSSL_free(mm); | |
| 559 } | |
| 560 err: | |
| 561 MemCheck_on(); /* release MALLOC2 lock | |
| 562 * if num_disabled drops to 0 */ | |
| 563 } | |
| 564 break; | |
| 565 } | |
| 566 return; | |
| 567 } | |
| 568 | |
| 569 void CRYPTO_dbg_free(void *addr, int before_p) | |
| 570 { | |
| 571 MEM m,*mp; | |
| 572 | |
| 573 switch(before_p) | |
| 574 { | |
| 575 case 0: | |
| 576 if (addr == NULL) | |
| 577 break; | |
| 578 | |
| 579 if (is_MemCheck_on() && (mh != NULL)) | |
| 580 { | |
| 581 MemCheck_off(); /* make sure we hold MALLOC2 lock */ | |
| 582 | |
| 583 m.addr=addr; | |
| 584 mp=lh_MEM_delete(mh,&m); | |
| 585 if (mp != NULL) | |
| 586 { | |
| 587 #ifdef LEVITTE_DEBUG_MEM | |
| 588 fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5ld] - 0x%p (%d)\n
", | |
| 589 mp->order, mp->addr, mp->num); | |
| 590 #endif | |
| 591 if (mp->app_info != NULL) | |
| 592 app_info_free(mp->app_info); | |
| 593 OPENSSL_free(mp); | |
| 594 } | |
| 595 | |
| 596 MemCheck_on(); /* release MALLOC2 lock | |
| 597 * if num_disabled drops to 0 */ | |
| 598 } | |
| 599 break; | |
| 600 case 1: | |
| 601 break; | |
| 602 } | |
| 603 } | |
| 604 | |
| 605 void CRYPTO_dbg_realloc(void *addr1, void *addr2, int num, | |
| 606 const char *file, int line, int before_p) | |
| 607 { | |
| 608 MEM m,*mp; | |
| 609 | |
| 610 #ifdef LEVITTE_DEBUG_MEM | |
| 611 fprintf(stderr, "LEVITTE_DEBUG_MEM: --> CRYPTO_dbg_malloc(addr1 = %p, ad
dr2 = %p, num = %d, file = \"%s\", line = %d, before_p = %d)\n", | |
| 612 addr1, addr2, num, file, line, before_p); | |
| 613 #endif | |
| 614 | |
| 615 switch(before_p) | |
| 616 { | |
| 617 case 0: | |
| 618 break; | |
| 619 case 1: | |
| 620 if (addr2 == NULL) | |
| 621 break; | |
| 622 | |
| 623 if (addr1 == NULL) | |
| 624 { | |
| 625 CRYPTO_dbg_malloc(addr2, num, file, line, 128 | before_p
); | |
| 626 break; | |
| 627 } | |
| 628 | |
| 629 if (is_MemCheck_on()) | |
| 630 { | |
| 631 MemCheck_off(); /* make sure we hold MALLOC2 lock */ | |
| 632 | |
| 633 m.addr=addr1; | |
| 634 mp=lh_MEM_delete(mh,&m); | |
| 635 if (mp != NULL) | |
| 636 { | |
| 637 #ifdef LEVITTE_DEBUG_MEM | |
| 638 fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5ld] * 0x%
p (%d) -> 0x%p (%d)\n", | |
| 639 mp->order, | |
| 640 mp->addr, mp->num, | |
| 641 addr2, num); | |
| 642 #endif | |
| 643 mp->addr=addr2; | |
| 644 mp->num=num; | |
| 645 (void)lh_MEM_insert(mh,mp); | |
| 646 } | |
| 647 | |
| 648 MemCheck_on(); /* release MALLOC2 lock | |
| 649 * if num_disabled drops to 0 */ | |
| 650 } | |
| 651 break; | |
| 652 } | |
| 653 return; | |
| 654 } | |
| 655 | |
| 656 | |
| 657 typedef struct mem_leak_st | |
| 658 { | |
| 659 BIO *bio; | |
| 660 int chunks; | |
| 661 long bytes; | |
| 662 } MEM_LEAK; | |
| 663 | |
| 664 static void print_leak_doall_arg(const MEM *m, MEM_LEAK *l) | |
| 665 { | |
| 666 char buf[1024]; | |
| 667 char *bufp = buf; | |
| 668 APP_INFO *amip; | |
| 669 int ami_cnt; | |
| 670 struct tm *lcl = NULL; | |
| 671 CRYPTO_THREADID ti; | |
| 672 | |
| 673 #define BUF_REMAIN (sizeof buf - (size_t)(bufp - buf)) | |
| 674 | |
| 675 if(m->addr == (char *)l->bio) | |
| 676 return; | |
| 677 | |
| 678 if (options & V_CRYPTO_MDEBUG_TIME) | |
| 679 { | |
| 680 lcl = localtime(&m->time); | |
| 681 | |
| 682 BIO_snprintf(bufp, BUF_REMAIN, "[%02d:%02d:%02d] ", | |
| 683 lcl->tm_hour,lcl->tm_min,lcl->tm_sec); | |
| 684 bufp += strlen(bufp); | |
| 685 } | |
| 686 | |
| 687 BIO_snprintf(bufp, BUF_REMAIN, "%5lu file=%s, line=%d, ", | |
| 688 m->order,m->file,m->line); | |
| 689 bufp += strlen(bufp); | |
| 690 | |
| 691 if (options & V_CRYPTO_MDEBUG_THREAD) | |
| 692 { | |
| 693 BIO_snprintf(bufp, BUF_REMAIN, "thread=%lu, ", | |
| 694 CRYPTO_THREADID_hash(&m->threadid)); | |
| 695 bufp += strlen(bufp); | |
| 696 } | |
| 697 | |
| 698 BIO_snprintf(bufp, BUF_REMAIN, "number=%d, address=%08lX\n", | |
| 699 m->num,(unsigned long)m->addr); | |
| 700 bufp += strlen(bufp); | |
| 701 | |
| 702 BIO_puts(l->bio,buf); | |
| 703 | |
| 704 l->chunks++; | |
| 705 l->bytes+=m->num; | |
| 706 | |
| 707 amip=m->app_info; | |
| 708 ami_cnt=0; | |
| 709 if (!amip) | |
| 710 return; | |
| 711 CRYPTO_THREADID_cpy(&ti, &amip->threadid); | |
| 712 | |
| 713 do | |
| 714 { | |
| 715 int buf_len; | |
| 716 int info_len; | |
| 717 | |
| 718 ami_cnt++; | |
| 719 memset(buf,'>',ami_cnt); | |
| 720 BIO_snprintf(buf + ami_cnt, sizeof buf - ami_cnt, | |
| 721 " thread=%lu, file=%s, line=%d, info=\"", | |
| 722 CRYPTO_THREADID_hash(&amip->threadid), amip->file, | |
| 723 amip->line); | |
| 724 buf_len=strlen(buf); | |
| 725 info_len=strlen(amip->info); | |
| 726 if (128 - buf_len - 3 < info_len) | |
| 727 { | |
| 728 memcpy(buf + buf_len, amip->info, 128 - buf_len - 3); | |
| 729 buf_len = 128 - 3; | |
| 730 } | |
| 731 else | |
| 732 { | |
| 733 BUF_strlcpy(buf + buf_len, amip->info, | |
| 734 sizeof buf - buf_len); | |
| 735 buf_len = strlen(buf); | |
| 736 } | |
| 737 BIO_snprintf(buf + buf_len, sizeof buf - buf_len, "\"\n"); | |
| 738 | |
| 739 BIO_puts(l->bio,buf); | |
| 740 | |
| 741 amip = amip->next; | |
| 742 } | |
| 743 while(amip && !CRYPTO_THREADID_cmp(&amip->threadid, &ti)); | |
| 744 | |
| 745 #ifdef LEVITTE_DEBUG_MEM | |
| 746 if (amip) | |
| 747 { | |
| 748 fprintf(stderr, "Thread switch detected in backtrace!!!!\n"); | |
| 749 abort(); | |
| 750 } | |
| 751 #endif | |
| 752 } | |
| 753 | |
| 754 static IMPLEMENT_LHASH_DOALL_ARG_FN(print_leak, const MEM, MEM_LEAK) | |
| 755 | |
| 756 void CRYPTO_mem_leaks(BIO *b) | |
| 757 { | |
| 758 MEM_LEAK ml; | |
| 759 | |
| 760 if (mh == NULL && amih == NULL) | |
| 761 return; | |
| 762 | |
| 763 MemCheck_off(); /* obtain MALLOC2 lock */ | |
| 764 | |
| 765 ml.bio=b; | |
| 766 ml.bytes=0; | |
| 767 ml.chunks=0; | |
| 768 if (mh != NULL) | |
| 769 lh_MEM_doall_arg(mh, LHASH_DOALL_ARG_FN(print_leak), MEM_LEAK, | |
| 770 &ml); | |
| 771 if (ml.chunks != 0) | |
| 772 { | |
| 773 BIO_printf(b,"%ld bytes leaked in %d chunks\n", | |
| 774 ml.bytes,ml.chunks); | |
| 775 #ifdef CRYPTO_MDEBUG_ABORT | |
| 776 abort(); | |
| 777 #endif | |
| 778 } | |
| 779 else | |
| 780 { | |
| 781 /* Make sure that, if we found no leaks, memory-leak debugging i
tself | |
| 782 * does not introduce memory leaks (which might irritate | |
| 783 * external debugging tools). | |
| 784 * (When someone enables leak checking, but does not call | |
| 785 * this function, we declare it to be their fault.) | |
| 786 * | |
| 787 * XXX This should be in CRYPTO_mem_leaks_cb, | |
| 788 * and CRYPTO_mem_leaks should be implemented by | |
| 789 * using CRYPTO_mem_leaks_cb. | |
| 790 * (Also there should be a variant of lh_doall_arg | |
| 791 * that takes a function pointer instead of a void *; | |
| 792 * this would obviate the ugly and illegal | |
| 793 * void_fn_to_char kludge in CRYPTO_mem_leaks_cb. | |
| 794 * Otherwise the code police will come and get us.) | |
| 795 */ | |
| 796 int old_mh_mode; | |
| 797 | |
| 798 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC); | |
| 799 | |
| 800 /* avoid deadlock when lh_free() uses CRYPTO_dbg_free(), | |
| 801 * which uses CRYPTO_is_mem_check_on */ | |
| 802 old_mh_mode = mh_mode; | |
| 803 mh_mode = CRYPTO_MEM_CHECK_OFF; | |
| 804 | |
| 805 if (mh != NULL) | |
| 806 { | |
| 807 lh_MEM_free(mh); | |
| 808 mh = NULL; | |
| 809 } | |
| 810 if (amih != NULL) | |
| 811 { | |
| 812 if (lh_APP_INFO_num_items(amih) == 0) | |
| 813 { | |
| 814 lh_APP_INFO_free(amih); | |
| 815 amih = NULL; | |
| 816 } | |
| 817 } | |
| 818 | |
| 819 mh_mode = old_mh_mode; | |
| 820 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC); | |
| 821 } | |
| 822 MemCheck_on(); /* release MALLOC2 lock */ | |
| 823 } | |
| 824 | |
| 825 #ifndef OPENSSL_NO_FP_API | |
| 826 void CRYPTO_mem_leaks_fp(FILE *fp) | |
| 827 { | |
| 828 BIO *b; | |
| 829 | |
| 830 if (mh == NULL) return; | |
| 831 /* Need to turn off memory checking when allocated BIOs ... especially | |
| 832 * as we're creating them at a time when we're trying to check we've not | |
| 833 * left anything un-free()'d!! */ | |
| 834 MemCheck_off(); | |
| 835 b = BIO_new(BIO_s_file()); | |
| 836 MemCheck_on(); | |
| 837 if(!b) return; | |
| 838 BIO_set_fp(b,fp,BIO_NOCLOSE); | |
| 839 CRYPTO_mem_leaks(b); | |
| 840 BIO_free(b); | |
| 841 } | |
| 842 #endif | |
| 843 | |
| 844 | |
| 845 | |
| 846 /* FIXME: We really don't allow much to the callback. For example, it has | |
| 847 no chance of reaching the info stack for the item it processes. Should | |
| 848 it really be this way? -- Richard Levitte */ | |
| 849 /* NB: The prototypes have been typedef'd to CRYPTO_MEM_LEAK_CB inside crypto.h | |
| 850 * If this code is restructured, remove the callback type if it is no longer | |
| 851 * needed. -- Geoff Thorpe */ | |
| 852 | |
| 853 /* Can't pass CRYPTO_MEM_LEAK_CB directly to lh_MEM_doall_arg because it | |
| 854 * is a function pointer and conversion to void * is prohibited. Instead | |
| 855 * pass its address | |
| 856 */ | |
| 857 | |
| 858 typedef CRYPTO_MEM_LEAK_CB *PCRYPTO_MEM_LEAK_CB; | |
| 859 | |
| 860 static void cb_leak_doall_arg(const MEM *m, PCRYPTO_MEM_LEAK_CB *cb) | |
| 861 { | |
| 862 (*cb)(m->order,m->file,m->line,m->num,m->addr); | |
| 863 } | |
| 864 | |
| 865 static IMPLEMENT_LHASH_DOALL_ARG_FN(cb_leak, const MEM, PCRYPTO_MEM_LEAK_CB) | |
| 866 | |
| 867 void CRYPTO_mem_leaks_cb(CRYPTO_MEM_LEAK_CB *cb) | |
| 868 { | |
| 869 if (mh == NULL) return; | |
| 870 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2); | |
| 871 lh_MEM_doall_arg(mh, LHASH_DOALL_ARG_FN(cb_leak), PCRYPTO_MEM_LEAK_CB, | |
| 872 &cb); | |
| 873 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2); | |
| 874 } | |
| OLD | NEW |
|---|
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