OpenSSL: update to 1.0.1m
[tomato.git] / release / src / router / openssl / crypto / mem_dbg.c
blob8525ded78c7983fbe3fb7ddbc698c0e20f627cc3
1 /* crypto/mem_dbg.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
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
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)"
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.
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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
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.
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/)"
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.
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.
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/)"
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 * ====================================================================
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).
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>
121 static int mh_mode = CRYPTO_MEM_CHECK_OFF;
123 * The state changes to CRYPTO_MEM_CHECK_ON | CRYPTO_MEM_CHECK_ENABLE when
124 * the application asks for it (usually after library initialisation for
125 * which no book-keeping is desired). State CRYPTO_MEM_CHECK_ON exists only
126 * temporarily when the library thinks that certain allocations should not be
127 * checked (e.g. the data structures used for memory checking). It is not
128 * suitable as an initial state: the library will unexpectedly enable memory
129 * checking when it executes one of those sections that want to disable
130 * checking temporarily. State CRYPTO_MEM_CHECK_ENABLE without ..._ON makes
131 * no sense whatsoever.
134 static unsigned long order = 0; /* number of memory requests */
136 DECLARE_LHASH_OF(MEM);
137 static LHASH_OF(MEM) *mh = NULL; /* hash-table of memory requests (address as
138 * key); access requires MALLOC2 lock */
140 typedef struct app_mem_info_st
142 * For application-defined information (static C-string `info')
143 * to be displayed in memory leak list.
144 * Each thread has its own stack. For applications, there is
145 * CRYPTO_push_info("...") to push an entry,
146 * CRYPTO_pop_info() to pop an entry,
147 * CRYPTO_remove_all_info() to pop all entries.
150 CRYPTO_THREADID threadid;
151 const char *file;
152 int line;
153 const char *info;
154 struct app_mem_info_st *next; /* tail of thread's stack */
155 int references;
156 } APP_INFO;
158 static void app_info_free(APP_INFO *);
160 DECLARE_LHASH_OF(APP_INFO);
161 static LHASH_OF(APP_INFO) *amih = NULL; /* hash-table with those
162 * app_mem_info_st's that are at the
163 * top of their thread's stack (with
164 * `thread' as key); access requires
165 * MALLOC2 lock */
167 typedef struct mem_st
168 /* memory-block description */
170 void *addr;
171 int num;
172 const char *file;
173 int line;
174 CRYPTO_THREADID threadid;
175 unsigned long order;
176 time_t time;
177 APP_INFO *app_info;
178 } MEM;
180 static long options = /* extra information to be recorded */
181 #if defined(CRYPTO_MDEBUG_TIME) || defined(CRYPTO_MDEBUG_ALL)
182 V_CRYPTO_MDEBUG_TIME |
183 #endif
184 #if defined(CRYPTO_MDEBUG_THREAD) || defined(CRYPTO_MDEBUG_ALL)
185 V_CRYPTO_MDEBUG_THREAD |
186 #endif
189 static unsigned int num_disable = 0; /* num_disable > 0 iff mh_mode ==
190 * CRYPTO_MEM_CHECK_ON (w/o ..._ENABLE) */
193 * Valid iff num_disable > 0. CRYPTO_LOCK_MALLOC2 is locked exactly in this
194 * case (by the thread named in disabling_thread).
196 static CRYPTO_THREADID disabling_threadid;
198 static void app_info_free(APP_INFO *inf)
200 if (--(inf->references) <= 0) {
201 if (inf->next != NULL) {
202 app_info_free(inf->next);
204 OPENSSL_free(inf);
208 int CRYPTO_mem_ctrl(int mode)
210 int ret = mh_mode;
212 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
213 switch (mode) {
215 * for applications (not to be called while multiple threads use the
216 * library):
218 case CRYPTO_MEM_CHECK_ON: /* aka MemCheck_start() */
219 mh_mode = CRYPTO_MEM_CHECK_ON | CRYPTO_MEM_CHECK_ENABLE;
220 num_disable = 0;
221 break;
222 case CRYPTO_MEM_CHECK_OFF: /* aka MemCheck_stop() */
223 mh_mode = 0;
224 num_disable = 0; /* should be true *before* MemCheck_stop is
225 * used, or there'll be a lot of confusion */
226 break;
228 /* switch off temporarily (for library-internal use): */
229 case CRYPTO_MEM_CHECK_DISABLE: /* aka MemCheck_off() */
230 if (mh_mode & CRYPTO_MEM_CHECK_ON) {
231 CRYPTO_THREADID cur;
232 CRYPTO_THREADID_current(&cur);
233 /* see if we don't have the MALLOC2 lock already */
234 if (!num_disable
235 || CRYPTO_THREADID_cmp(&disabling_threadid, &cur)) {
237 * Long-time lock CRYPTO_LOCK_MALLOC2 must not be claimed
238 * while we're holding CRYPTO_LOCK_MALLOC, or we'll deadlock
239 * if somebody else holds CRYPTO_LOCK_MALLOC2 (and cannot
240 * release it because we block entry to this function). Give
241 * them a chance, first, and then claim the locks in
242 * appropriate order (long-time lock first).
244 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
246 * Note that after we have waited for CRYPTO_LOCK_MALLOC2 and
247 * CRYPTO_LOCK_MALLOC, we'll still be in the right "case" and
248 * "if" branch because MemCheck_start and MemCheck_stop may
249 * never be used while there are multiple OpenSSL threads.
251 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2);
252 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
253 mh_mode &= ~CRYPTO_MEM_CHECK_ENABLE;
254 CRYPTO_THREADID_cpy(&disabling_threadid, &cur);
256 num_disable++;
258 break;
259 case CRYPTO_MEM_CHECK_ENABLE: /* aka MemCheck_on() */
260 if (mh_mode & CRYPTO_MEM_CHECK_ON) {
261 if (num_disable) { /* always true, or something is going wrong */
262 num_disable--;
263 if (num_disable == 0) {
264 mh_mode |= CRYPTO_MEM_CHECK_ENABLE;
265 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2);
269 break;
271 default:
272 break;
274 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
275 return (ret);
278 int CRYPTO_is_mem_check_on(void)
280 int ret = 0;
282 if (mh_mode & CRYPTO_MEM_CHECK_ON) {
283 CRYPTO_THREADID cur;
284 CRYPTO_THREADID_current(&cur);
285 CRYPTO_r_lock(CRYPTO_LOCK_MALLOC);
287 ret = (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
288 || CRYPTO_THREADID_cmp(&disabling_threadid, &cur);
290 CRYPTO_r_unlock(CRYPTO_LOCK_MALLOC);
292 return (ret);
295 void CRYPTO_dbg_set_options(long bits)
297 options = bits;
300 long CRYPTO_dbg_get_options(void)
302 return options;
305 static int mem_cmp(const MEM *a, const MEM *b)
307 #ifdef _WIN64
308 const char *ap = (const char *)a->addr, *bp = (const char *)b->addr;
309 if (ap == bp)
310 return 0;
311 else if (ap > bp)
312 return 1;
313 else
314 return -1;
315 #else
316 return (const char *)a->addr - (const char *)b->addr;
317 #endif
320 static IMPLEMENT_LHASH_COMP_FN(mem, MEM)
322 static unsigned long mem_hash(const MEM *a)
324 unsigned long ret;
326 ret = (unsigned long)a->addr;
328 ret = ret * 17851 + (ret >> 14) * 7 + (ret >> 4) * 251;
329 return (ret);
332 static IMPLEMENT_LHASH_HASH_FN(mem, MEM)
334 /* static int app_info_cmp(APP_INFO *a, APP_INFO *b) */
335 static int app_info_cmp(const void *a_void, const void *b_void)
337 return CRYPTO_THREADID_cmp(&((const APP_INFO *)a_void)->threadid,
338 &((const APP_INFO *)b_void)->threadid);
341 static IMPLEMENT_LHASH_COMP_FN(app_info, APP_INFO)
343 static unsigned long app_info_hash(const APP_INFO *a)
345 unsigned long ret;
347 ret = CRYPTO_THREADID_hash(&a->threadid);
348 /* This is left in as a "who am I to question legacy?" measure */
349 ret = ret * 17851 + (ret >> 14) * 7 + (ret >> 4) * 251;
350 return (ret);
353 static IMPLEMENT_LHASH_HASH_FN(app_info, APP_INFO)
355 static APP_INFO *pop_info(void)
357 APP_INFO tmp;
358 APP_INFO *ret = NULL;
360 if (amih != NULL) {
361 CRYPTO_THREADID_current(&tmp.threadid);
362 if ((ret = lh_APP_INFO_delete(amih, &tmp)) != NULL) {
363 APP_INFO *next = ret->next;
365 if (next != NULL) {
366 next->references++;
367 (void)lh_APP_INFO_insert(amih, next);
369 #ifdef LEVITTE_DEBUG_MEM
370 if (CRYPTO_THREADID_cmp(&ret->threadid, &tmp.threadid)) {
371 fprintf(stderr,
372 "pop_info(): deleted info has other thread ID (%lu) than the current thread (%lu)!!!!\n",
373 CRYPTO_THREADID_hash(&ret->threadid),
374 CRYPTO_THREADID_hash(&tmp.threadid));
375 abort();
377 #endif
378 if (--(ret->references) <= 0) {
379 ret->next = NULL;
380 if (next != NULL)
381 next->references--;
382 OPENSSL_free(ret);
386 return (ret);
389 int CRYPTO_push_info_(const char *info, const char *file, int line)
391 APP_INFO *ami, *amim;
392 int ret = 0;
394 if (is_MemCheck_on()) {
395 MemCheck_off(); /* obtain MALLOC2 lock */
397 if ((ami = (APP_INFO *)OPENSSL_malloc(sizeof(APP_INFO))) == NULL) {
398 ret = 0;
399 goto err;
401 if (amih == NULL) {
402 if ((amih = lh_APP_INFO_new()) == NULL) {
403 OPENSSL_free(ami);
404 ret = 0;
405 goto err;
409 CRYPTO_THREADID_current(&ami->threadid);
410 ami->file = file;
411 ami->line = line;
412 ami->info = info;
413 ami->references = 1;
414 ami->next = NULL;
416 if ((amim = lh_APP_INFO_insert(amih, ami)) != NULL) {
417 #ifdef LEVITTE_DEBUG_MEM
418 if (CRYPTO_THREADID_cmp(&ami->threadid, &amim->threadid)) {
419 fprintf(stderr,
420 "CRYPTO_push_info(): previous info has other thread ID (%lu) than the current thread (%lu)!!!!\n",
421 CRYPTO_THREADID_hash(&amim->threadid),
422 CRYPTO_THREADID_hash(&ami->threadid));
423 abort();
425 #endif
426 ami->next = amim;
428 err:
429 MemCheck_on(); /* release MALLOC2 lock */
432 return (ret);
435 int CRYPTO_pop_info(void)
437 int ret = 0;
439 if (is_MemCheck_on()) { /* _must_ be true, or something went severely
440 * wrong */
441 MemCheck_off(); /* obtain MALLOC2 lock */
443 ret = (pop_info() != NULL);
445 MemCheck_on(); /* release MALLOC2 lock */
447 return (ret);
450 int CRYPTO_remove_all_info(void)
452 int ret = 0;
454 if (is_MemCheck_on()) { /* _must_ be true */
455 MemCheck_off(); /* obtain MALLOC2 lock */
457 while (pop_info() != NULL)
458 ret++;
460 MemCheck_on(); /* release MALLOC2 lock */
462 return (ret);
465 static unsigned long break_order_num = 0;
466 void CRYPTO_dbg_malloc(void *addr, int num, const char *file, int line,
467 int before_p)
469 MEM *m, *mm;
470 APP_INFO tmp, *amim;
472 switch (before_p & 127) {
473 case 0:
474 break;
475 case 1:
476 if (addr == NULL)
477 break;
479 if (is_MemCheck_on()) {
480 MemCheck_off(); /* make sure we hold MALLOC2 lock */
481 if ((m = (MEM *)OPENSSL_malloc(sizeof(MEM))) == NULL) {
482 OPENSSL_free(addr);
483 MemCheck_on(); /* release MALLOC2 lock if num_disabled drops
484 * to 0 */
485 return;
487 if (mh == NULL) {
488 if ((mh = lh_MEM_new()) == NULL) {
489 OPENSSL_free(addr);
490 OPENSSL_free(m);
491 addr = NULL;
492 goto err;
496 m->addr = addr;
497 m->file = file;
498 m->line = line;
499 m->num = num;
500 if (options & V_CRYPTO_MDEBUG_THREAD)
501 CRYPTO_THREADID_current(&m->threadid);
502 else
503 memset(&m->threadid, 0, sizeof(m->threadid));
505 if (order == break_order_num) {
506 /* BREAK HERE */
507 m->order = order;
509 m->order = order++;
510 #ifdef LEVITTE_DEBUG_MEM
511 fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5ld] %c 0x%p (%d)\n",
512 m->order, (before_p & 128) ? '*' : '+', m->addr, m->num);
513 #endif
514 if (options & V_CRYPTO_MDEBUG_TIME)
515 m->time = time(NULL);
516 else
517 m->time = 0;
519 CRYPTO_THREADID_current(&tmp.threadid);
520 m->app_info = NULL;
521 if (amih != NULL
522 && (amim = lh_APP_INFO_retrieve(amih, &tmp)) != NULL) {
523 m->app_info = amim;
524 amim->references++;
527 if ((mm = lh_MEM_insert(mh, m)) != NULL) {
528 /* Not good, but don't sweat it */
529 if (mm->app_info != NULL) {
530 mm->app_info->references--;
532 OPENSSL_free(mm);
534 err:
535 MemCheck_on(); /* release MALLOC2 lock if num_disabled drops
536 * to 0 */
538 break;
540 return;
543 void CRYPTO_dbg_free(void *addr, int before_p)
545 MEM m, *mp;
547 switch (before_p) {
548 case 0:
549 if (addr == NULL)
550 break;
552 if (is_MemCheck_on() && (mh != NULL)) {
553 MemCheck_off(); /* make sure we hold MALLOC2 lock */
555 m.addr = addr;
556 mp = lh_MEM_delete(mh, &m);
557 if (mp != NULL) {
558 #ifdef LEVITTE_DEBUG_MEM
559 fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5ld] - 0x%p (%d)\n",
560 mp->order, mp->addr, mp->num);
561 #endif
562 if (mp->app_info != NULL)
563 app_info_free(mp->app_info);
564 OPENSSL_free(mp);
567 MemCheck_on(); /* release MALLOC2 lock if num_disabled drops
568 * to 0 */
570 break;
571 case 1:
572 break;
576 void CRYPTO_dbg_realloc(void *addr1, void *addr2, int num,
577 const char *file, int line, int before_p)
579 MEM m, *mp;
581 #ifdef LEVITTE_DEBUG_MEM
582 fprintf(stderr,
583 "LEVITTE_DEBUG_MEM: --> CRYPTO_dbg_malloc(addr1 = %p, addr2 = %p, num = %d, file = \"%s\", line = %d, before_p = %d)\n",
584 addr1, addr2, num, file, line, before_p);
585 #endif
587 switch (before_p) {
588 case 0:
589 break;
590 case 1:
591 if (addr2 == NULL)
592 break;
594 if (addr1 == NULL) {
595 CRYPTO_dbg_malloc(addr2, num, file, line, 128 | before_p);
596 break;
599 if (is_MemCheck_on()) {
600 MemCheck_off(); /* make sure we hold MALLOC2 lock */
602 m.addr = addr1;
603 mp = lh_MEM_delete(mh, &m);
604 if (mp != NULL) {
605 #ifdef LEVITTE_DEBUG_MEM
606 fprintf(stderr,
607 "LEVITTE_DEBUG_MEM: [%5ld] * 0x%p (%d) -> 0x%p (%d)\n",
608 mp->order, mp->addr, mp->num, addr2, num);
609 #endif
610 mp->addr = addr2;
611 mp->num = num;
612 (void)lh_MEM_insert(mh, mp);
615 MemCheck_on(); /* release MALLOC2 lock if num_disabled drops
616 * to 0 */
618 break;
620 return;
623 typedef struct mem_leak_st {
624 BIO *bio;
625 int chunks;
626 long bytes;
627 } MEM_LEAK;
629 static void print_leak_doall_arg(const MEM *m, MEM_LEAK *l)
631 char buf[1024];
632 char *bufp = buf;
633 APP_INFO *amip;
634 int ami_cnt;
635 struct tm *lcl = NULL;
636 CRYPTO_THREADID ti;
638 #define BUF_REMAIN (sizeof buf - (size_t)(bufp - buf))
640 if (m->addr == (char *)l->bio)
641 return;
643 if (options & V_CRYPTO_MDEBUG_TIME) {
644 lcl = localtime(&m->time);
646 BIO_snprintf(bufp, BUF_REMAIN, "[%02d:%02d:%02d] ",
647 lcl->tm_hour, lcl->tm_min, lcl->tm_sec);
648 bufp += strlen(bufp);
651 BIO_snprintf(bufp, BUF_REMAIN, "%5lu file=%s, line=%d, ",
652 m->order, m->file, m->line);
653 bufp += strlen(bufp);
655 if (options & V_CRYPTO_MDEBUG_THREAD) {
656 BIO_snprintf(bufp, BUF_REMAIN, "thread=%lu, ",
657 CRYPTO_THREADID_hash(&m->threadid));
658 bufp += strlen(bufp);
661 BIO_snprintf(bufp, BUF_REMAIN, "number=%d, address=%08lX\n",
662 m->num, (unsigned long)m->addr);
663 bufp += strlen(bufp);
665 BIO_puts(l->bio, buf);
667 l->chunks++;
668 l->bytes += m->num;
670 amip = m->app_info;
671 ami_cnt = 0;
672 if (!amip)
673 return;
674 CRYPTO_THREADID_cpy(&ti, &amip->threadid);
676 do {
677 int buf_len;
678 int info_len;
680 ami_cnt++;
681 memset(buf, '>', ami_cnt);
682 BIO_snprintf(buf + ami_cnt, sizeof buf - ami_cnt,
683 " thread=%lu, file=%s, line=%d, info=\"",
684 CRYPTO_THREADID_hash(&amip->threadid), amip->file,
685 amip->line);
686 buf_len = strlen(buf);
687 info_len = strlen(amip->info);
688 if (128 - buf_len - 3 < info_len) {
689 memcpy(buf + buf_len, amip->info, 128 - buf_len - 3);
690 buf_len = 128 - 3;
691 } else {
692 BUF_strlcpy(buf + buf_len, amip->info, sizeof buf - buf_len);
693 buf_len = strlen(buf);
695 BIO_snprintf(buf + buf_len, sizeof buf - buf_len, "\"\n");
697 BIO_puts(l->bio, buf);
699 amip = amip->next;
701 while (amip && !CRYPTO_THREADID_cmp(&amip->threadid, &ti));
703 #ifdef LEVITTE_DEBUG_MEM
704 if (amip) {
705 fprintf(stderr, "Thread switch detected in backtrace!!!!\n");
706 abort();
708 #endif
711 static IMPLEMENT_LHASH_DOALL_ARG_FN(print_leak, const MEM, MEM_LEAK)
713 void CRYPTO_mem_leaks(BIO *b)
715 MEM_LEAK ml;
717 if (mh == NULL && amih == NULL)
718 return;
720 MemCheck_off(); /* obtain MALLOC2 lock */
722 ml.bio = b;
723 ml.bytes = 0;
724 ml.chunks = 0;
725 if (mh != NULL)
726 lh_MEM_doall_arg(mh, LHASH_DOALL_ARG_FN(print_leak), MEM_LEAK, &ml);
727 if (ml.chunks != 0) {
728 BIO_printf(b, "%ld bytes leaked in %d chunks\n", ml.bytes, ml.chunks);
729 #ifdef CRYPTO_MDEBUG_ABORT
730 abort();
731 #endif
732 } else {
734 * Make sure that, if we found no leaks, memory-leak debugging itself
735 * does not introduce memory leaks (which might irritate external
736 * debugging tools). (When someone enables leak checking, but does not
737 * call this function, we declare it to be their fault.) XXX This
738 * should be in CRYPTO_mem_leaks_cb, and CRYPTO_mem_leaks should be
739 * implemented by using CRYPTO_mem_leaks_cb. (Also there should be a
740 * variant of lh_doall_arg that takes a function pointer instead of a
741 * void *; this would obviate the ugly and illegal void_fn_to_char
742 * kludge in CRYPTO_mem_leaks_cb. Otherwise the code police will come
743 * and get us.)
745 int old_mh_mode;
747 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
750 * avoid deadlock when lh_free() uses CRYPTO_dbg_free(), which uses
751 * CRYPTO_is_mem_check_on
753 old_mh_mode = mh_mode;
754 mh_mode = CRYPTO_MEM_CHECK_OFF;
756 if (mh != NULL) {
757 lh_MEM_free(mh);
758 mh = NULL;
760 if (amih != NULL) {
761 if (lh_APP_INFO_num_items(amih) == 0) {
762 lh_APP_INFO_free(amih);
763 amih = NULL;
767 mh_mode = old_mh_mode;
768 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
770 MemCheck_on(); /* release MALLOC2 lock */
773 #ifndef OPENSSL_NO_FP_API
774 void CRYPTO_mem_leaks_fp(FILE *fp)
776 BIO *b;
778 if (mh == NULL)
779 return;
781 * Need to turn off memory checking when allocated BIOs ... especially as
782 * we're creating them at a time when we're trying to check we've not
783 * left anything un-free()'d!!
785 MemCheck_off();
786 b = BIO_new(BIO_s_file());
787 MemCheck_on();
788 if (!b)
789 return;
790 BIO_set_fp(b, fp, BIO_NOCLOSE);
791 CRYPTO_mem_leaks(b);
792 BIO_free(b);
794 #endif
797 * FIXME: We really don't allow much to the callback. For example, it has no
798 * chance of reaching the info stack for the item it processes. Should it
799 * really be this way? -- Richard Levitte
802 * NB: The prototypes have been typedef'd to CRYPTO_MEM_LEAK_CB inside
803 * crypto.h If this code is restructured, remove the callback type if it is
804 * no longer needed. -- Geoff Thorpe
808 * Can't pass CRYPTO_MEM_LEAK_CB directly to lh_MEM_doall_arg because it is a
809 * function pointer and conversion to void * is prohibited. Instead pass its
810 * address
813 typedef CRYPTO_MEM_LEAK_CB *PCRYPTO_MEM_LEAK_CB;
815 static void cb_leak_doall_arg(const MEM *m, PCRYPTO_MEM_LEAK_CB *cb)
817 (*cb) (m->order, m->file, m->line, m->num, m->addr);
820 static IMPLEMENT_LHASH_DOALL_ARG_FN(cb_leak, const MEM, PCRYPTO_MEM_LEAK_CB)
822 void CRYPTO_mem_leaks_cb(CRYPTO_MEM_LEAK_CB *cb)
824 if (mh == NULL)
825 return;
826 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2);
827 lh_MEM_doall_arg(mh, LHASH_DOALL_ARG_FN(cb_leak), PCRYPTO_MEM_LEAK_CB,
828 &cb);
829 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2);