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 #ifdef CRYPTO_MDEBUG_TIME
64 #include <openssl/buffer.h>
65 #include <openssl/bio.h>
66 #include <openssl/lhash.h>
69 /* #ifdef CRYPTO_MDEBUG */
70 /* static int mh_mode=CRYPTO_MEM_CHECK_ON; */
72 static int mh_mode=CRYPTO_MEM_CHECK_OFF;
74 /* State CRYPTO_MEM_CHECK_ON exists only temporarily when the library
75 * thinks that certain allocations should not be checked (e.g. the data
76 * structures used for memory checking). It is not suitable as an initial
77 * state: the library will unexpectedly enable memory checking when it
78 * executes one of those sections that want to disable checking
81 * State CRYPTO_MEM_CHECK_ENABLE without ..._ON makes no sense whatsoever.
84 static unsigned long order=0;
86 static LHASH *mh=NULL;
95 #ifdef CRYPTO_MDEBUG_TIME
100 int CRYPTO_mem_ctrl(int mode)
104 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
107 /* for applications: */
108 case CRYPTO_MEM_CHECK_ON: /* aka MemCheck_start() */
109 mh_mode = CRYPTO_MEM_CHECK_ON|CRYPTO_MEM_CHECK_ENABLE;
111 case CRYPTO_MEM_CHECK_OFF: /* aka MemCheck_stop() */
115 /* switch off temporarily (for library-internal use): */
116 case CRYPTO_MEM_CHECK_DISABLE: /* aka MemCheck_off() */
117 mh_mode&= ~CRYPTO_MEM_CHECK_ENABLE;
119 case CRYPTO_MEM_CHECK_ENABLE: /* aka MemCheck_on() */
120 if (mh_mode&CRYPTO_MEM_CHECK_ON)
121 mh_mode|=CRYPTO_MEM_CHECK_ENABLE;
127 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
131 static int mem_cmp(MEM *a, MEM *b)
133 return(a->addr - b->addr);
136 static unsigned long mem_hash(MEM *a)
140 ret=(unsigned long)a->addr;
142 ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
146 static char *(*malloc_locked_func)()=(char *(*)())malloc;
147 static void (*free_locked_func)()=(void (*)())free;
148 static char *(*malloc_func)()= (char *(*)())malloc;
149 static char *(*realloc_func)()= (char *(*)())realloc;
150 static void (*free_func)()= (void (*)())free;
152 void CRYPTO_set_mem_functions(char *(*m)(), char *(*r)(), void (*f)())
154 if ((m == NULL) || (r == NULL) || (f == NULL)) return;
158 malloc_locked_func=m;
162 void CRYPTO_set_locked_mem_functions(char *(*m)(), void (*f)())
164 if ((m == NULL) || (f == NULL)) return;
165 malloc_locked_func=m;
169 void CRYPTO_get_mem_functions(char *(**m)(), char *(**r)(), void (**f)())
171 if (m != NULL) *m=malloc_func;
172 if (r != NULL) *r=realloc_func;
173 if (f != NULL) *f=free_func;
176 void CRYPTO_get_locked_mem_functions(char *(**m)(), void (**f)())
178 if (m != NULL) *m=malloc_locked_func;
179 if (f != NULL) *f=free_locked_func;
182 void *CRYPTO_malloc_locked(int num)
184 return(malloc_locked_func(num));
187 void CRYPTO_free_locked(void *str)
189 free_locked_func(str);
192 void *CRYPTO_malloc(int num)
194 return(malloc_func(num));
197 void *CRYPTO_realloc(void *str, int num)
199 return(realloc_func(str,num));
202 void CRYPTO_free(void *str)
207 static unsigned long break_order_num=0;
208 void *CRYPTO_dbg_malloc(int num, const char *file, int line)
213 if ((ret=malloc_func(num)) == NULL)
216 if (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
219 if ((m=(MEM *)Malloc(sizeof(MEM))) == NULL)
225 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
228 if ((mh=lh_new(mem_hash,mem_cmp)) == NULL)
241 if (order == break_order_num)
247 #ifdef CRYPTO_MDEBUG_TIME
250 if ((mm=(MEM *)lh_insert(mh,(char *)m)) != NULL)
252 /* Not good, but don't sweat it */
256 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
262 void CRYPTO_dbg_free(void *addr)
266 if ((mh_mode & CRYPTO_MEM_CHECK_ENABLE) && (mh != NULL))
269 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
271 mp=(MEM *)lh_delete(mh,(char *)&m);
274 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
280 void *CRYPTO_dbg_realloc(void *addr, int num, const char *file, int line)
285 ret=realloc_func(addr,num);
286 if (ret == addr) return(ret);
288 if (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
291 if (ret == NULL) return(NULL);
293 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
294 mp=(MEM *)lh_delete(mh,(char *)&m);
298 lh_insert(mh,(char *)mp);
300 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
306 void *CRYPTO_remalloc(void *a, int n)
308 if (a != NULL) Free(a);
313 void *CRYPTO_dbg_remalloc(void *a, int n, const char *file, int line)
315 if (a != NULL) CRYPTO_dbg_free(a);
316 a=(char *)CRYPTO_dbg_malloc(n,file,line);
321 typedef struct mem_leak_st
328 static void print_leak(MEM *m, MEM_LEAK *l)
332 if(m->addr == (char *)l->bio)
334 #ifdef CRYPTO_MDEBUG_TIME
336 struct tm *lcl = localtime(&m->time);
337 sprintf(buf,"[%02d:%02d:%02d] %5lu file=%s, line=%d, number=%d, address=%08lX\n",
338 lcl->tm_hour,lcl->tm_min,lcl->tm_sec,
339 m->order,m->file,m->line,m->num,(unsigned long)m->addr);
342 sprintf(buf,"%5lu file=%s, line=%d, number=%d, address=%08lX\n",
343 m->order,m->file,m->line,m->num,(unsigned long)m->addr);
345 BIO_puts(l->bio,buf);
350 void CRYPTO_mem_leaks(BIO *b)
355 if (mh == NULL) return;
359 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
360 lh_doall_arg(mh,(void (*)())print_leak,(char *)&ml);
361 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
364 sprintf(buf,"%ld bytes leaked in %d chunks\n",
371 lh_node_stats_bio(mh,b);
372 lh_node_usage_stats_bio(mh,b);
376 static void (*mem_cb)()=NULL;
378 static void cb_leak(MEM *m, char *cb)
380 void (*mem_callback)()=(void (*)())cb;
381 mem_callback(m->order,m->file,m->line,m->num,m->addr);
384 void CRYPTO_mem_leaks_cb(void (*cb)())
386 if (mh == NULL) return;
387 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
389 lh_doall_arg(mh,(void (*)())cb_leak,(char *)mem_cb);
391 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
395 void CRYPTO_mem_leaks_fp(FILE *fp)
399 if (mh == NULL) return;
400 if ((b=BIO_new(BIO_s_file())) == NULL)
402 BIO_set_fp(b,fp,BIO_NOCLOSE);