2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
61 #include <openssl/crypto.h>
62 #ifdef CRYPTO_MDEBUG_TIME
65 #include <openssl/buffer.h>
66 #include <openssl/bio.h>
67 #include <openssl/lhash.h>
70 /* #ifdef CRYPTO_MDEBUG */
71 /* static int mh_mode=CRYPTO_MEM_CHECK_ON; */
73 static int mh_mode=CRYPTO_MEM_CHECK_OFF;
74 static unsigned long disabling_thread = 0;
76 /* State CRYPTO_MEM_CHECK_ON exists only temporarily when the library
77 * thinks that certain allocations should not be checked (e.g. the data
78 * structures used for memory checking). It is not suitable as an initial
79 * state: the library will unexpectedly enable memory checking when it
80 * executes one of those sections that want to disable checking
83 * State CRYPTO_MEM_CHECK_ENABLE without ..._ON makes no sense whatsoever.
86 static unsigned long order=0;
88 static LHASH *amih=NULL;
90 typedef struct app_mem_info_st
96 struct app_mem_info_st *next;
100 static LHASH *mh=NULL;
102 typedef struct mem_st
108 #ifdef CRYPTO_MDEBUG_THREAD
109 unsigned long thread;
112 #ifdef CRYPTO_MDEBUG_TIME
118 int CRYPTO_mem_ctrl(int mode)
122 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
125 /* for applications: */
126 case CRYPTO_MEM_CHECK_ON: /* aka MemCheck_start() */
127 mh_mode = CRYPTO_MEM_CHECK_ON|CRYPTO_MEM_CHECK_ENABLE;
128 disabling_thread = 0;
130 case CRYPTO_MEM_CHECK_OFF: /* aka MemCheck_stop() */
132 disabling_thread = 0;
135 /* switch off temporarily (for library-internal use): */
136 case CRYPTO_MEM_CHECK_DISABLE: /* aka MemCheck_off() */
137 if (mh_mode & CRYPTO_MEM_CHECK_ON)
139 mh_mode&= ~CRYPTO_MEM_CHECK_ENABLE;
140 if (disabling_thread != CRYPTO_thread_id())
142 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2);
143 disabling_thread=CRYPTO_thread_id();
147 case CRYPTO_MEM_CHECK_ENABLE: /* aka MemCheck_on() */
148 if (mh_mode & CRYPTO_MEM_CHECK_ON)
150 mh_mode|=CRYPTO_MEM_CHECK_ENABLE;
151 if (disabling_thread != 0)
154 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2);
162 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
166 static int is_MemCheck_On()
170 if (mh_mode & CRYPTO_MEM_CHECK_ON)
172 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
174 ret = (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
175 && disabling_thread != CRYPTO_thread_id();
177 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
182 static int mem_cmp(MEM *a, MEM *b)
184 return(a->addr - b->addr);
187 static unsigned long mem_hash(MEM *a)
191 ret=(unsigned long)a->addr;
193 ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
197 static int app_info_cmp(APP_INFO *a, APP_INFO *b)
199 return(a->thread - b->thread);
202 static unsigned long app_info_hash(APP_INFO *a)
206 ret=(unsigned long)a->thread;
208 ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
212 static APP_INFO *free_info(APP_INFO *app_info)
216 if (app_info == NULL)
219 if (--(app_info->references) > 0)
222 app_info->references = 0;
224 next = app_info->next;
225 app_info->next = NULL; /* Just to make sure */
228 if (next != app_info)
229 return free_info(next);
233 static APP_INFO *remove_info()
236 APP_INFO *ret = NULL;
240 tmp.thread=CRYPTO_thread_id();
241 if ((ret=(APP_INFO *)lh_delete(amih,(char *)&tmp)) != NULL)
243 APP_INFO *next=ret->next;
245 if (ret->thread != tmp.thread)
247 fprintf(stderr, "remove_info(): deleted info has other thread ID (%lu) than the current thread (%lu)!!!!\n",
248 ret->thread, tmp.thread);
254 lh_insert(amih,(char *)next);
262 int CRYPTO_add_info(const char *file, int line, const char *info)
264 APP_INFO *ami, *amim;
267 if (is_MemCheck_On())
271 if ((ami = (APP_INFO *)Malloc(sizeof(APP_INFO))) == NULL)
278 if ((amih=lh_new(app_info_hash,app_info_cmp)) == NULL)
286 ami->thread=CRYPTO_thread_id();
293 if ((amim=(APP_INFO *)lh_insert(amih,(char *)ami)) != NULL)
296 if (ami->thread != amim->thread)
298 fprintf(stderr, "CRYPTO_add_info(): previous info has other thread ID (%lu) than the current thread (%lu)!!!!\n",
299 amim->thread, ami->thread);
312 int CRYPTO_remove_info()
316 if (is_MemCheck_On())
320 ret=(remove_info() != NULL);
327 static char *(*malloc_locked_func)()=(char *(*)())malloc;
328 static void (*free_locked_func)()=(void (*)())free;
329 static char *(*malloc_func)()= (char *(*)())malloc;
330 static char *(*realloc_func)()= (char *(*)())realloc;
331 static void (*free_func)()= (void (*)())free;
333 void CRYPTO_set_mem_functions(char *(*m)(), char *(*r)(), void (*f)())
335 if ((m == NULL) || (r == NULL) || (f == NULL)) return;
339 malloc_locked_func=m;
343 void CRYPTO_set_locked_mem_functions(char *(*m)(), void (*f)())
345 if ((m == NULL) || (f == NULL)) return;
346 malloc_locked_func=m;
350 void CRYPTO_get_mem_functions(char *(**m)(), char *(**r)(), void (**f)())
352 if (m != NULL) *m=malloc_func;
353 if (r != NULL) *r=realloc_func;
354 if (f != NULL) *f=free_func;
357 void CRYPTO_get_locked_mem_functions(char *(**m)(), void (**f)())
359 if (m != NULL) *m=malloc_locked_func;
360 if (f != NULL) *f=free_locked_func;
363 void *CRYPTO_malloc_locked(int num)
365 return(malloc_locked_func(num));
368 void CRYPTO_free_locked(void *str)
370 free_locked_func(str);
373 void *CRYPTO_malloc(int num)
375 return(malloc_func(num));
378 void *CRYPTO_realloc(void *str, int num)
380 return(realloc_func(str,num));
383 void CRYPTO_free(void *str)
388 static unsigned long break_order_num=0;
389 void *CRYPTO_dbg_malloc(int num, const char *file, int line)
395 if ((ret=malloc_func(num)) == NULL)
398 if (is_MemCheck_On())
401 if ((m=(MEM *)Malloc(sizeof(MEM))) == NULL)
409 if ((mh=lh_new(mem_hash,mem_cmp)) == NULL)
422 #ifdef CRYPTO_MDEBUG_THREAD
423 m->thread=CRYPTO_thread_id();
425 if (order == break_order_num)
431 #ifdef CRYPTO_MDEBUG_TIME
435 tmp.thread=CRYPTO_thread_id();
438 && (amim=(APP_INFO *)lh_retrieve(amih,(char *)&tmp)) != NULL)
444 if ((mm=(MEM *)lh_insert(mh,(char *)m)) != NULL)
446 /* Not good, but don't sweat it */
447 if (mm->app_info != NULL)
449 mm->app_info->references--;
459 void CRYPTO_dbg_free(void *addr)
463 if (is_MemCheck_On() && (mh != NULL))
468 mp=(MEM *)lh_delete(mh,(char *)&m);
471 if (mp->app_info != NULL)
473 mp->app_info->references--;
483 void *CRYPTO_dbg_realloc(void *addr, int num, const char *file, int line)
488 ret=realloc_func(addr,num);
489 if (ret == addr) return(ret);
491 if (is_MemCheck_On())
493 if (ret == NULL) return(NULL);
498 mp=(MEM *)lh_delete(mh,(char *)&m);
502 lh_insert(mh,(char *)mp);
510 void *CRYPTO_remalloc(void *a, int n)
512 if (a != NULL) Free(a);
517 void *CRYPTO_dbg_remalloc(void *a, int n, const char *file, int line)
519 if (a != NULL) CRYPTO_dbg_free(a);
520 a=(char *)CRYPTO_dbg_malloc(n,file,line);
525 typedef struct mem_leak_st
532 static void print_leak(MEM *m, MEM_LEAK *l)
537 #ifdef CRYPTO_MDEBUG_TIME
542 if(m->addr == (char *)l->bio)
545 #ifdef CRYPTO_MDEBUG_TIME
546 lcl = localtime(&m->time);
550 #ifdef CRYPTO_MDEBUG_TIME
553 "%5lu file=%s, line=%d, "
554 #ifdef CRYPTO_MDEBUG_THREAD
557 "number=%d, address=%08lX\n",
558 #ifdef CRYPTO_MDEBUG_TIME
559 lcl->tm_hour,lcl->tm_min,lcl->tm_sec,
561 m->order,m->file,m->line,
562 #ifdef CRYPTO_MDEBUG_THREAD
565 m->num,(unsigned long)m->addr);
567 BIO_puts(l->bio,buf);
576 while(amip && amip->thread == ti)
582 memset(buf,'>',ami_cnt);
583 sprintf(buf + ami_cnt,
584 "thread=%lu, file=%s, line=%d, info=\"",
585 amip->thread, amip->file, amip->line);
587 info_len=strlen(amip->info);
588 if (128 - buf_len - 3 < info_len)
590 memcpy(buf + buf_len, amip->info, 128 - buf_len - 3);
595 strcpy(buf + buf_len, amip->info);
596 buf_len = strlen(buf);
598 sprintf(buf + buf_len, "\"\n");
600 BIO_puts(l->bio,buf);
607 fprintf(stderr, "Thread switch detected i backtrace!!!!\n");
613 void CRYPTO_mem_leaks(BIO *b)
618 if (mh == NULL) return;
622 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2);
623 lh_doall_arg(mh,(void (*)())print_leak,(char *)&ml);
624 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2);
627 sprintf(buf,"%ld bytes leaked in %d chunks\n",
634 lh_node_stats_bio(mh,b);
635 lh_node_usage_stats_bio(mh,b);
639 static void (*mem_cb)()=NULL;
641 static void cb_leak(MEM *m, char *cb)
643 void (*mem_callback)()=(void (*)())cb;
644 mem_callback(m->order,m->file,m->line,m->num,m->addr);
647 void CRYPTO_mem_leaks_cb(void (*cb)())
649 if (mh == NULL) return;
650 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2);
652 lh_doall_arg(mh,(void (*)())cb_leak,(char *)mem_cb);
654 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2);
658 void CRYPTO_mem_leaks_fp(FILE *fp)
662 if (mh == NULL) return;
663 if ((b=BIO_new(BIO_s_file())) == NULL)
665 BIO_set_fp(b,fp,BIO_NOCLOSE);