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authorryker <>1998-10-05 20:13:15 +0000
committerryker <>1998-10-05 20:13:15 +0000
commit536c76cbb863bab152f19842ab88772c01e922c7 (patch)
treedfecec371a097b73d605aae665887946d9982219 /src/lib/libcrypto/mem.c
downloadopenbsd-536c76cbb863bab152f19842ab88772c01e922c7.tar.gz
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Import of SSLeay-0.9.0b with RSA and IDEA stubbed + OpenBSD build
functionality for shared libs. Note that routines such as sslv2_init and friends that use RSA will not work due to lack of RSA in this library. Needs documentation and help from ports for easy upgrade to full functionality where legally possible.
Diffstat (limited to 'src/lib/libcrypto/mem.c')
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diff --git a/src/lib/libcrypto/mem.c b/src/lib/libcrypto/mem.c
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1/* crypto/mem.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#include <stdio.h>
60#include <stdlib.h>
61#include "buffer.h"
62#include "bio.h"
63#include "lhash.h"
64#include "cryptlib.h"
65
66static int mh_mode=CRYPTO_MEM_CHECK_OFF;
67static unsigned long order=0;
68
69static LHASH *mh=NULL;
70
71typedef struct mem_st
72 {
73 char *addr;
74 int num;
75 char *file;
76 int line;
77 unsigned long order;
78 } MEM;
79
80int CRYPTO_mem_ctrl(mode)
81int mode;
82 {
83 int ret=mh_mode;
84
85 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
86 switch (mode)
87 {
88 case CRYPTO_MEM_CHECK_ON:
89 mh_mode|=CRYPTO_MEM_CHECK_ON;
90 break;
91 case CRYPTO_MEM_CHECK_OFF:
92 mh_mode&= ~CRYPTO_MEM_CHECK_ON;
93 break;
94 default:
95 break;
96 }
97 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
98 return(ret);
99 }
100
101static int mem_cmp(a,b)
102MEM *a,*b;
103 {
104 return(a->addr - b->addr);
105 }
106
107static unsigned long mem_hash(a)
108MEM *a;
109 {
110 unsigned long ret;
111
112 ret=(unsigned long)a->addr;
113
114 ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
115 return(ret);
116 }
117
118static char *(*malloc_func)()= (char *(*)())malloc;
119static char *(*realloc_func)()= (char *(*)())realloc;
120static void (*free_func)()= (void (*)())free;
121
122void CRYPTO_set_mem_functions(m,r,f)
123char *(*m)();
124char *(*r)();
125void (*f)();
126 {
127 if ((m == NULL) || (r == NULL) || (f == NULL)) return;
128 malloc_func=m;
129 realloc_func=r;
130 free_func=f;
131 }
132
133void CRYPTO_get_mem_functions(m,r,f)
134char *(**m)();
135char *(**r)();
136void (**f)();
137 {
138 if (m != NULL) *m=malloc_func;
139 if (r != NULL) *r=realloc_func;
140 if (f != NULL) *f=free_func;
141 }
142
143char *CRYPTO_malloc(num)
144int num;
145 {
146 return(malloc_func(num));
147 }
148
149char *CRYPTO_realloc(str,num)
150char *str;
151int num;
152 {
153 return(realloc_func(str,num));
154 }
155
156void CRYPTO_free(str)
157char *str;
158 {
159 free_func(str);
160 }
161
162char *CRYPTO_dbg_malloc(num,file,line)
163int num;
164char *file;
165int line;
166 {
167 char *ret;
168 MEM *m,*mm;
169
170 if ((ret=malloc_func(num)) == NULL)
171 return(NULL);
172
173 if (mh_mode & CRYPTO_MEM_CHECK_ON)
174 {
175 if ((m=(MEM *)malloc(sizeof(MEM))) == NULL)
176 {
177 free(ret);
178 return(NULL);
179 }
180 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
181 if (mh == NULL)
182 {
183 if ((mh=lh_new(mem_hash,mem_cmp)) == NULL)
184 {
185 free(ret);
186 free(m);
187 return(NULL);
188 }
189 }
190
191 m->addr=ret;
192 m->file=file;
193 m->line=line;
194 m->num=num;
195 m->order=order++;
196 if ((mm=(MEM *)lh_insert(mh,(char *)m)) != NULL)
197 {
198 /* Not good, but don't sweat it */
199 free(mm);
200 }
201 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
202 }
203 return(ret);
204 }
205
206void CRYPTO_dbg_free(addr)
207char *addr;
208 {
209 MEM m,*mp;
210
211 if ((mh_mode & CRYPTO_MEM_CHECK_ON) && (mh != NULL))
212 {
213 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
214 m.addr=addr;
215 mp=(MEM *)lh_delete(mh,(char *)&m);
216 if (mp != NULL)
217 free(mp);
218 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
219 }
220 free_func(addr);
221 }
222
223char *CRYPTO_dbg_realloc(addr,num,file,line)
224char *addr;
225int num;
226char *file;
227int line;
228 {
229 char *ret;
230 MEM m,*mp;
231
232 ret=realloc_func(addr,num);
233 if (ret == addr) return(ret);
234
235 if (mh_mode & CRYPTO_MEM_CHECK_ON)
236 {
237 if (ret == NULL) return(NULL);
238 m.addr=addr;
239 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
240 mp=(MEM *)lh_delete(mh,(char *)&m);
241 if (mp != NULL)
242 {
243 mp->addr=ret;
244 lh_insert(mh,(char *)mp);
245 }
246 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
247 }
248 return(ret);
249 }
250
251char *CRYPTO_remalloc(a,n)
252char *a;
253int n;
254 {
255 if (a != NULL) Free(a);
256 a=(char *)Malloc(n);
257 return(a);
258 }
259
260char *CRYPTO_dbg_remalloc(a,n,file,line)
261char *a;
262int n;
263char *file;
264int line;
265 {
266 if (a != NULL) CRYPTO_dbg_free(a);
267 a=(char *)CRYPTO_dbg_malloc(n,file,line);
268 return(a);
269 }
270
271
272typedef struct mem_leak_st
273 {
274 BIO *bio;
275 int chunks;
276 long bytes;
277 } MEM_LEAK;
278
279static void print_leak(m,l)
280MEM *m;
281MEM_LEAK *l;
282 {
283 char buf[128];
284
285 sprintf(buf,"%5ld file=%s, line=%d, number=%d, address=%08lX\n",
286 m->order,m->file,m->line,m->num,(long)m->addr);
287 BIO_puts(l->bio,buf);
288 l->chunks++;
289 l->bytes+=m->num;
290 }
291
292void CRYPTO_mem_leaks(b)
293BIO *b;
294 {
295 MEM_LEAK ml;
296 char buf[80];
297
298 if (mh == NULL) return;
299 ml.bio=b;
300 ml.bytes=0;
301 ml.chunks=0;
302 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
303 lh_doall_arg(mh,(void (*)())print_leak,(char *)&ml);
304 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
305 if (ml.chunks != 0)
306 {
307 sprintf(buf,"%ld bytes leaked in %d chunks\n",
308 ml.bytes,ml.chunks);
309 BIO_puts(b,buf);
310 }
311 /*
312 lh_stats_bio(mh,b);
313 lh_node_stats_bio(mh,b);
314 lh_node_usage_stats_bio(mh,b);
315 */
316 }
317
318static void (*mem_cb)()=NULL;
319
320static void cb_leak(m,cb)
321MEM *m;
322char *cb;
323 {
324 void (*mem_callback)()=(void (*)())cb;
325 mem_callback(m->order,m->file,m->line,m->num,m->addr);
326 }
327
328void CRYPTO_mem_leaks_cb(cb)
329void (*cb)();
330 {
331 if (mh == NULL) return;
332 CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
333 mem_cb=cb;
334 lh_doall_arg(mh,(void (*)())cb_leak,(char *)mem_cb);
335 mem_cb=NULL;
336 CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
337 }
338
339#ifndef NO_FP_API
340void CRYPTO_mem_leaks_fp(fp)
341FILE *fp;
342 {
343 BIO *b;
344
345 if (mh == NULL) return;
346 if ((b=BIO_new(BIO_s_file())) == NULL)
347 return;
348 BIO_set_fp(b,fp,BIO_NOCLOSE);
349 CRYPTO_mem_leaks(b);
350 BIO_free(b);
351 }
352#endif
353