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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(WIN32) || defined(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 "err_hash",
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 "rand",
93 "debug_malloc",
94 "BIO",
95 "gethostbyname",
96 "getservbyname",
97 "readdir",
98 "RSA_blinding",
99 "dh",
100 "debug_malloc2",
101 "dso",
102 "dynlock",
103 "engine",
104#if CRYPTO_NUM_LOCKS != 29
105# error "Inconsistency between crypto.h and cryptlib.c"
106#endif
107 };
108
109/* This is for applications to allocate new type names in the non-dynamic
110 array of lock names. These are numbered with positive numbers. */
111static STACK *app_locks=NULL;
112
113/* For applications that want a more dynamic way of handling threads, the
114 following stack is used. These are externally numbered with negative
115 numbers. */
116static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL;
117
118
119static void (MS_FAR *locking_callback)(int mode,int type,
120 const char *file,int line)=NULL;
121static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
122 int type,const char *file,int line)=NULL;
123static unsigned long (MS_FAR *id_callback)(void)=NULL;
124static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
125 (const char *file,int line)=NULL;
126static void (MS_FAR *dynlock_lock_callback)(int mode,
127 struct CRYPTO_dynlock_value *l, const char *file,int line)=NULL;
128static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
129 const char *file,int line)=NULL;
130
131int CRYPTO_get_new_lockid(char *name)
132 {
133 char *str;
134 int i;
135
136 /* A hack to make Visual C++ 5.0 work correctly when linking as
137 * a DLL using /MT. Without this, the application cannot use
138 * and floating point printf's.
139 * It also seems to be needed for Visual C 1.5 (win16) */
140#if defined(WIN32) || defined(WIN16)
141 SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
142#endif
143
144 if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
145 {
146 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
147 return(0);
148 }
149 if ((str=BUF_strdup(name)) == NULL)
150 {
151 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
152 return(0);
153 }
154 i=sk_push(app_locks,str);
155 if (!i)
156 OPENSSL_free(str);
157 else
158 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
159 return(i);
160 }
161
162int CRYPTO_num_locks(void)
163 {
164 return CRYPTO_NUM_LOCKS;
165 }
166
167int CRYPTO_get_new_dynlockid(void)
168 {
169 int i = 0;
170 CRYPTO_dynlock *pointer = NULL;
171
172 if (dynlock_create_callback == NULL)
173 {
174 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
175 return(0);
176 }
177 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
178 if ((dyn_locks == NULL)
179 && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
180 {
181 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
182 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
183 return(0);
184 }
185 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
186
187 pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
188 if (pointer == NULL)
189 {
190 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
191 return(0);
192 }
193 pointer->references = 1;
194 pointer->data = dynlock_create_callback(__FILE__,__LINE__);
195 if (pointer->data == NULL)
196 {
197 OPENSSL_free(pointer);
198 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
199 return(0);
200 }
201
202 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
203 /* First, try to find an existing empty slot */
204 i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
205 /* If there was none, push, thereby creating a new one */
206 if (i == -1)
207 i=sk_CRYPTO_dynlock_push(dyn_locks,pointer);
208 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
209
210 if (!i)
211 {
212 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
213 OPENSSL_free(pointer);
214 }
215 else
216 i += 1; /* to avoid 0 */
217 return -i;
218 }
219
220void CRYPTO_destroy_dynlockid(int i)
221 {
222 CRYPTO_dynlock *pointer = NULL;
223 if (i)
224 i = -i-1;
225 if (dynlock_destroy_callback == NULL)
226 return;
227
228 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
229
230 if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
231 return;
232 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
233 if (pointer != NULL)
234 {
235 --pointer->references;
236#ifdef REF_CHECK
237 if (pointer->references < 0)
238 {
239 fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
240 abort();
241 }
242 else
243#endif
244 if (pointer->references <= 0)
245 {
246 sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
247 }
248 else
249 pointer = NULL;
250 }
251 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
252
253 if (pointer)
254 {
255 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
256 OPENSSL_free(pointer);
257 }
258 }
259
260struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
261 {
262 CRYPTO_dynlock *pointer = NULL;
263 if (i)
264 i = -i-1;
265
266 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
267
268 if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
269 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
270 if (pointer)
271 pointer->references++;
272
273 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
274
275 if (pointer)
276 return pointer->data;
277 return NULL;
278 }
279
280struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
281 (const char *file,int line)
282 {
283 return(dynlock_create_callback);
284 }
285
286void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
287 struct CRYPTO_dynlock_value *l, const char *file,int line)
288 {
289 return(dynlock_lock_callback);
290 }
291
292void (*CRYPTO_get_dynlock_destroy_callback(void))
293 (struct CRYPTO_dynlock_value *l, const char *file,int line)
294 {
295 return(dynlock_destroy_callback);
296 }
297
298void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
299 (const char *file, int line))
300 {
301 dynlock_create_callback=func;
302 }
303
304void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
305 struct CRYPTO_dynlock_value *l, const char *file, int line))
306 {
307 dynlock_lock_callback=func;
308 }
309
310void CRYPTO_set_dynlock_destroy_callback(void (*func)
311 (struct CRYPTO_dynlock_value *l, const char *file, int line))
312 {
313 dynlock_destroy_callback=func;
314 }
315
316
317void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
318 int line)
319 {
320 return(locking_callback);
321 }
322
323int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
324 const char *file,int line)
325 {
326 return(add_lock_callback);
327 }
328
329void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
330 const char *file,int line))
331 {
332 locking_callback=func;
333 }
334
335void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
336 const char *file,int line))
337 {
338 add_lock_callback=func;
339 }
340
341unsigned long (*CRYPTO_get_id_callback(void))(void)
342 {
343 return(id_callback);
344 }
345
346void CRYPTO_set_id_callback(unsigned long (*func)(void))
347 {
348 id_callback=func;
349 }
350
351unsigned long CRYPTO_thread_id(void)
352 {
353 unsigned long ret=0;
354
355 if (id_callback == NULL)
356 {
357#ifdef WIN16
358 ret=(unsigned long)GetCurrentTask();
359#elif defined(WIN32)
360 ret=(unsigned long)GetCurrentThreadId();
361#elif defined(GETPID_IS_MEANINGLESS)
362 ret=1L;
363#else
364 ret=(unsigned long)getpid();
365#endif
366 }
367 else
368 ret=id_callback();
369 return(ret);
370 }
371
372void CRYPTO_lock(int mode, int type, const char *file, int line)
373 {
374#ifdef LOCK_DEBUG
375 {
376 char *rw_text,*operation_text;
377
378 if (mode & CRYPTO_LOCK)
379 operation_text="lock ";
380 else if (mode & CRYPTO_UNLOCK)
381 operation_text="unlock";
382 else
383 operation_text="ERROR ";
384
385 if (mode & CRYPTO_READ)
386 rw_text="r";
387 else if (mode & CRYPTO_WRITE)
388 rw_text="w";
389 else
390 rw_text="ERROR";
391
392 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
393 CRYPTO_thread_id(), rw_text, operation_text,
394 CRYPTO_get_lock_name(type), file, line);
395 }
396#endif
397 if (type < 0)
398 {
399 struct CRYPTO_dynlock_value *pointer
400 = CRYPTO_get_dynlock_value(type);
401
402 if (pointer && dynlock_lock_callback)
403 {
404 dynlock_lock_callback(mode, pointer, file, line);
405 }
406
407 CRYPTO_destroy_dynlockid(type);
408 }
409 else
410 if (locking_callback != NULL)
411 locking_callback(mode,type,file,line);
412 }
413
414int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
415 int line)
416 {
417 int ret = 0;
418
419 if (add_lock_callback != NULL)
420 {
421#ifdef LOCK_DEBUG
422 int before= *pointer;
423#endif
424
425 ret=add_lock_callback(pointer,amount,type,file,line);
426#ifdef LOCK_DEBUG
427 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
428 CRYPTO_thread_id(),
429 before,amount,ret,
430 CRYPTO_get_lock_name(type),
431 file,line);
432#endif
433 }
434 else
435 {
436 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
437
438 ret= *pointer+amount;
439#ifdef LOCK_DEBUG
440 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
441 CRYPTO_thread_id(),
442 *pointer,amount,ret,
443 CRYPTO_get_lock_name(type),
444 file,line);
445#endif
446 *pointer=ret;
447 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
448 }
449 return(ret);
450 }
451
452const char *CRYPTO_get_lock_name(int type)
453 {
454 if (type < 0)
455 return("dynamic");
456 else if (type < CRYPTO_NUM_LOCKS)
457 return(lock_names[type]);
458 else if (type-CRYPTO_NUM_LOCKS >= sk_num(app_locks))
459 return("ERROR");
460 else
461 return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
462 }
463
464#ifdef _DLL
465#ifdef WIN32
466
467/* All we really need to do is remove the 'error' state when a thread
468 * detaches */
469
470BOOL WINAPI DLLEntryPoint(HINSTANCE hinstDLL, DWORD fdwReason,
471 LPVOID lpvReserved)
472 {
473 switch(fdwReason)
474 {
475 case DLL_PROCESS_ATTACH:
476 break;
477 case DLL_THREAD_ATTACH:
478 break;
479 case DLL_THREAD_DETACH:
480 ERR_remove_state(0);
481 break;
482 case DLL_PROCESS_DETACH:
483 break;
484 }
485 return(TRUE);
486 }
487#endif
488
489#endif
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