Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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 used, |
| 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_threadid, &cur)) /* otherwise we already have the MALLOC2 lock */ |
| 242 | { |
| 243 | /* Long-time lock CRYPTO_LOCK_MALLOC2 must not be claimed while |
| 244 | * we're holding CRYPTO_LOCK_MALLOC, or we'll deadlock 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_LOCK_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 are 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 wrong */ |
| 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 other 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 info 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 wrong */ |
| 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, addr2 = %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 itself |
| 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 | } |