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diff --git a/src/lib/libcrypto/cryptlib.c b/src/lib/libcrypto/cryptlib.c
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1/* crypto/cryptlib.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 <string.h>
61#include "cryptlib.h"
62#include <openssl/crypto.h>
63#include <openssl/safestack.h>
64
65#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
66static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
67#endif
68
69DECLARE_STACK_OF(CRYPTO_dynlock)
70IMPLEMENT_STACK_OF(CRYPTO_dynlock)
71
72/* real #defines in crypto.h, keep these upto date */
73static const char* lock_names[CRYPTO_NUM_LOCKS] =
74 {
75 "<<ERROR>>",
76 "err",
77 "ex_data",
78 "x509",
79 "x509_info",
80 "x509_pkey",
81 "x509_crl",
82 "x509_req",
83 "dsa",
84 "rsa",
85 "evp_pkey",
86 "x509_store",
87 "ssl_ctx",
88 "ssl_cert",
89 "ssl_session",
90 "ssl_sess_cert",
91 "ssl",
92 "ssl_method",
93 "rand",
94 "rand2",
95 "debug_malloc",
96 "BIO",
97 "gethostbyname",
98 "getservbyname",
99 "readdir",
100 "RSA_blinding",
101 "dh",
102 "debug_malloc2",
103 "dso",
104 "dynlock",
105 "engine",
106 "ui",
107 "hwcrhk", /* This is a HACK which will disappear in 0.9.8 */
108#if CRYPTO_NUM_LOCKS != 33
109# error "Inconsistency between crypto.h and cryptlib.c"
110#endif
111 };
112
113/* This is for applications to allocate new type names in the non-dynamic
114 array of lock names. These are numbered with positive numbers. */
115static STACK *app_locks=NULL;
116
117/* For applications that want a more dynamic way of handling threads, the
118 following stack is used. These are externally numbered with negative
119 numbers. */
120static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL;
121
122
123static void (MS_FAR *locking_callback)(int mode,int type,
124 const char *file,int line)=NULL;
125static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
126 int type,const char *file,int line)=NULL;
127static unsigned long (MS_FAR *id_callback)(void)=NULL;
128static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
129 (const char *file,int line)=NULL;
130static void (MS_FAR *dynlock_lock_callback)(int mode,
131 struct CRYPTO_dynlock_value *l, const char *file,int line)=NULL;
132static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
133 const char *file,int line)=NULL;
134
135int CRYPTO_get_new_lockid(char *name)
136 {
137 char *str;
138 int i;
139
140#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
141 /* A hack to make Visual C++ 5.0 work correctly when linking as
142 * a DLL using /MT. Without this, the application cannot use
143 * and floating point printf's.
144 * It also seems to be needed for Visual C 1.5 (win16) */
145 SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
146#endif
147
148 if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
149 {
150 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
151 return(0);
152 }
153 if ((str=BUF_strdup(name)) == NULL)
154 {
155 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
156 return(0);
157 }
158 i=sk_push(app_locks,str);
159 if (!i)
160 OPENSSL_free(str);
161 else
162 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
163 return(i);
164 }
165
166int CRYPTO_num_locks(void)
167 {
168 return CRYPTO_NUM_LOCKS;
169 }
170
171int CRYPTO_get_new_dynlockid(void)
172 {
173 int i = 0;
174 CRYPTO_dynlock *pointer = NULL;
175
176 if (dynlock_create_callback == NULL)
177 {
178 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
179 return(0);
180 }
181 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
182 if ((dyn_locks == NULL)
183 && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
184 {
185 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
186 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
187 return(0);
188 }
189 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
190
191 pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
192 if (pointer == NULL)
193 {
194 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
195 return(0);
196 }
197 pointer->references = 1;
198 pointer->data = dynlock_create_callback(__FILE__,__LINE__);
199 if (pointer->data == NULL)
200 {
201 OPENSSL_free(pointer);
202 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
203 return(0);
204 }
205
206 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
207 /* First, try to find an existing empty slot */
208 i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
209 /* If there was none, push, thereby creating a new one */
210 if (i == -1)
211 /* Since sk_push() returns the number of items on the
212 stack, not the location of the pushed item, we need
213 to transform the returned number into a position,
214 by decreasing it. */
215 i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1;
216 else
217 /* If we found a place with a NULL pointer, put our pointer
218 in it. */
219 sk_CRYPTO_dynlock_set(dyn_locks,i,pointer);
220 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
221
222 if (i == -1)
223 {
224 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
225 OPENSSL_free(pointer);
226 }
227 else
228 i += 1; /* to avoid 0 */
229 return -i;
230 }
231
232void CRYPTO_destroy_dynlockid(int i)
233 {
234 CRYPTO_dynlock *pointer = NULL;
235 if (i)
236 i = -i-1;
237 if (dynlock_destroy_callback == NULL)
238 return;
239
240 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
241
242 if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
243 {
244 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
245 return;
246 }
247 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
248 if (pointer != NULL)
249 {
250 --pointer->references;
251#ifdef REF_CHECK
252 if (pointer->references < 0)
253 {
254 fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
255 abort();
256 }
257 else
258#endif
259 if (pointer->references <= 0)
260 {
261 sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
262 }
263 else
264 pointer = NULL;
265 }
266 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
267
268 if (pointer)
269 {
270 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
271 OPENSSL_free(pointer);
272 }
273 }
274
275struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
276 {
277 CRYPTO_dynlock *pointer = NULL;
278 if (i)
279 i = -i-1;
280
281 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
282
283 if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
284 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
285 if (pointer)
286 pointer->references++;
287
288 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
289
290 if (pointer)
291 return pointer->data;
292 return NULL;
293 }
294
295struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
296 (const char *file,int line)
297 {
298 return(dynlock_create_callback);
299 }
300
301void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
302 struct CRYPTO_dynlock_value *l, const char *file,int line)
303 {
304 return(dynlock_lock_callback);
305 }
306
307void (*CRYPTO_get_dynlock_destroy_callback(void))
308 (struct CRYPTO_dynlock_value *l, const char *file,int line)
309 {
310 return(dynlock_destroy_callback);
311 }
312
313void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
314 (const char *file, int line))
315 {
316 dynlock_create_callback=func;
317 }
318
319void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
320 struct CRYPTO_dynlock_value *l, const char *file, int line))
321 {
322 dynlock_lock_callback=func;
323 }
324
325void CRYPTO_set_dynlock_destroy_callback(void (*func)
326 (struct CRYPTO_dynlock_value *l, const char *file, int line))
327 {
328 dynlock_destroy_callback=func;
329 }
330
331
332void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
333 int line)
334 {
335 return(locking_callback);
336 }
337
338int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
339 const char *file,int line)
340 {
341 return(add_lock_callback);
342 }
343
344void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
345 const char *file,int line))
346 {
347 locking_callback=func;
348 }
349
350void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
351 const char *file,int line))
352 {
353 add_lock_callback=func;
354 }
355
356unsigned long (*CRYPTO_get_id_callback(void))(void)
357 {
358 return(id_callback);
359 }
360
361void CRYPTO_set_id_callback(unsigned long (*func)(void))
362 {
363 id_callback=func;
364 }
365
366unsigned long CRYPTO_thread_id(void)
367 {
368 unsigned long ret=0;
369
370 if (id_callback == NULL)
371 {
372#ifdef OPENSSL_SYS_WIN16
373 ret=(unsigned long)GetCurrentTask();
374#elif defined(OPENSSL_SYS_WIN32)
375 ret=(unsigned long)GetCurrentThreadId();
376#elif defined(GETPID_IS_MEANINGLESS)
377 ret=1L;
378#else
379 ret=(unsigned long)getpid();
380#endif
381 }
382 else
383 ret=id_callback();
384 return(ret);
385 }
386
387void CRYPTO_lock(int mode, int type, const char *file, int line)
388 {
389#ifdef LOCK_DEBUG
390 {
391 char *rw_text,*operation_text;
392
393 if (mode & CRYPTO_LOCK)
394 operation_text="lock ";
395 else if (mode & CRYPTO_UNLOCK)
396 operation_text="unlock";
397 else
398 operation_text="ERROR ";
399
400 if (mode & CRYPTO_READ)
401 rw_text="r";
402 else if (mode & CRYPTO_WRITE)
403 rw_text="w";
404 else
405 rw_text="ERROR";
406
407 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
408 CRYPTO_thread_id(), rw_text, operation_text,
409 CRYPTO_get_lock_name(type), file, line);
410 }
411#endif
412 if (type < 0)
413 {
414 if (dynlock_lock_callback != NULL)
415 {
416 struct CRYPTO_dynlock_value *pointer
417 = CRYPTO_get_dynlock_value(type);
418
419 OPENSSL_assert(pointer != NULL);
420
421 dynlock_lock_callback(mode, pointer, file, line);
422
423 CRYPTO_destroy_dynlockid(type);
424 }
425 }
426 else
427 if (locking_callback != NULL)
428 locking_callback(mode,type,file,line);
429 }
430
431int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
432 int line)
433 {
434 int ret = 0;
435
436 if (add_lock_callback != NULL)
437 {
438#ifdef LOCK_DEBUG
439 int before= *pointer;
440#endif
441
442 ret=add_lock_callback(pointer,amount,type,file,line);
443#ifdef LOCK_DEBUG
444 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
445 CRYPTO_thread_id(),
446 before,amount,ret,
447 CRYPTO_get_lock_name(type),
448 file,line);
449#endif
450 }
451 else
452 {
453 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
454
455 ret= *pointer+amount;
456#ifdef LOCK_DEBUG
457 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
458 CRYPTO_thread_id(),
459 *pointer,amount,ret,
460 CRYPTO_get_lock_name(type),
461 file,line);
462#endif
463 *pointer=ret;
464 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
465 }
466 return(ret);
467 }
468
469const char *CRYPTO_get_lock_name(int type)
470 {
471 if (type < 0)
472 return("dynamic");
473 else if (type < CRYPTO_NUM_LOCKS)
474 return(lock_names[type]);
475 else if (type-CRYPTO_NUM_LOCKS > sk_num(app_locks))
476 return("ERROR");
477 else
478 return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
479 }
480
481#ifdef _DLL
482#ifdef OPENSSL_SYS_WIN32
483
484/* All we really need to do is remove the 'error' state when a thread
485 * detaches */
486
487BOOL WINAPI DLLEntryPoint(HINSTANCE hinstDLL, DWORD fdwReason,
488 LPVOID lpvReserved)
489 {
490 switch(fdwReason)
491 {
492 case DLL_PROCESS_ATTACH:
493 break;
494 case DLL_THREAD_ATTACH:
495 break;
496 case DLL_THREAD_DETACH:
497 ERR_remove_state(0);
498 break;
499 case DLL_PROCESS_DETACH:
500 break;
501 }
502 return(TRUE);
503 }
504#endif
505
506#endif
507
508void OpenSSLDie(const char *file,int line,const char *assertion)
509 {
510 fprintf(stderr,
511 "%s(%d): OpenSSL internal error, assertion failed: %s\n",
512 file,line,assertion);
513 abort();
514 }
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