1 /* crypto/cryptlib.c */
2 /* ====================================================================
3 * Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * openssl-core@openssl.org.
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
31 * 6. Redistributions of any form whatsoever must retain the following
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
55 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
56 * All rights reserved.
58 * This package is an SSL implementation written
59 * by Eric Young (eay@cryptsoft.com).
60 * The implementation was written so as to conform with Netscapes SSL.
62 * This library is free for commercial and non-commercial use as long as
63 * the following conditions are aheared to. The following conditions
64 * apply to all code found in this distribution, be it the RC4, RSA,
65 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
66 * included with this distribution is covered by the same copyright terms
67 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
69 * Copyright remains Eric Young's, and as such any Copyright notices in
70 * the code are not to be removed.
71 * If this package is used in a product, Eric Young should be given attribution
72 * as the author of the parts of the library used.
73 * This can be in the form of a textual message at program startup or
74 * in documentation (online or textual) provided with the package.
76 * Redistribution and use in source and binary forms, with or without
77 * modification, are permitted provided that the following conditions
79 * 1. Redistributions of source code must retain the copyright
80 * notice, this list of conditions and the following disclaimer.
81 * 2. Redistributions in binary form must reproduce the above copyright
82 * notice, this list of conditions and the following disclaimer in the
83 * documentation and/or other materials provided with the distribution.
84 * 3. All advertising materials mentioning features or use of this software
85 * must display the following acknowledgement:
86 * "This product includes cryptographic software written by
87 * Eric Young (eay@cryptsoft.com)"
88 * The word 'cryptographic' can be left out if the rouines from the library
89 * being used are not cryptographic related :-).
90 * 4. If you include any Windows specific code (or a derivative thereof) from
91 * the apps directory (application code) you must include an acknowledgement:
92 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
94 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
95 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
97 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
98 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
99 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
100 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
101 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
102 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
103 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
106 * The licence and distribution terms for any publically available version or
107 * derivative of this code cannot be changed. i.e. this code cannot simply be
108 * copied and put under another distribution licence
109 * [including the GNU Public Licence.]
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECDH support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
119 #include "cryptlib.h"
120 #include <openssl/crypto.h>
121 #include <openssl/safestack.h>
123 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
124 static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
127 DECLARE_STACK_OF(CRYPTO_dynlock)
128 IMPLEMENT_STACK_OF(CRYPTO_dynlock)
130 /* real #defines in crypto.h, keep these upto date */
131 static const char* lock_names[CRYPTO_NUM_LOCKS] =
170 #if CRYPTO_NUM_LOCKS != 37
171 # error "Inconsistency between crypto.h and cryptlib.c"
175 /* This is for applications to allocate new type names in the non-dynamic
176 array of lock names. These are numbered with positive numbers. */
177 static STACK *app_locks=NULL;
179 /* For applications that want a more dynamic way of handling threads, the
180 following stack is used. These are externally numbered with negative
182 static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL;
185 static void (MS_FAR *locking_callback)(int mode,int type,
186 const char *file,int line)=NULL;
187 static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
188 int type,const char *file,int line)=NULL;
189 static unsigned long (MS_FAR *id_callback)(void)=NULL;
190 static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
191 (const char *file,int line)=NULL;
192 static void (MS_FAR *dynlock_lock_callback)(int mode,
193 struct CRYPTO_dynlock_value *l, const char *file,int line)=NULL;
194 static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
195 const char *file,int line)=NULL;
197 int CRYPTO_get_new_lockid(char *name)
202 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
203 /* A hack to make Visual C++ 5.0 work correctly when linking as
204 * a DLL using /MT. Without this, the application cannot use
205 * and floating point printf's.
206 * It also seems to be needed for Visual C 1.5 (win16) */
207 SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
210 if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
212 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
215 if ((str=BUF_strdup(name)) == NULL)
217 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
220 i=sk_push(app_locks,str);
224 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
228 int CRYPTO_num_locks(void)
230 return CRYPTO_NUM_LOCKS;
233 int CRYPTO_get_new_dynlockid(void)
236 CRYPTO_dynlock *pointer = NULL;
238 if (dynlock_create_callback == NULL)
240 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
243 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
244 if ((dyn_locks == NULL)
245 && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
247 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
248 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
251 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
253 pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
256 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
259 pointer->references = 1;
260 pointer->data = dynlock_create_callback(__FILE__,__LINE__);
261 if (pointer->data == NULL)
263 OPENSSL_free(pointer);
264 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
268 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
269 /* First, try to find an existing empty slot */
270 i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
271 /* If there was none, push, thereby creating a new one */
273 /* Since sk_push() returns the number of items on the
274 stack, not the location of the pushed item, we need
275 to transform the returned number into a position,
277 i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1;
279 /* If we found a place with a NULL pointer, put our pointer
281 sk_CRYPTO_dynlock_set(dyn_locks,i,pointer);
282 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
286 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
287 OPENSSL_free(pointer);
290 i += 1; /* to avoid 0 */
294 void CRYPTO_destroy_dynlockid(int i)
296 CRYPTO_dynlock *pointer = NULL;
299 if (dynlock_destroy_callback == NULL)
302 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
304 if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
306 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
309 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
312 --pointer->references;
314 if (pointer->references < 0)
316 fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
321 if (pointer->references <= 0)
323 sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
328 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
332 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
333 OPENSSL_free(pointer);
337 struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
339 CRYPTO_dynlock *pointer = NULL;
343 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
345 if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
346 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
348 pointer->references++;
350 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
353 return pointer->data;
357 struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
358 (const char *file,int line)
360 return(dynlock_create_callback);
363 void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
364 struct CRYPTO_dynlock_value *l, const char *file,int line)
366 return(dynlock_lock_callback);
369 void (*CRYPTO_get_dynlock_destroy_callback(void))
370 (struct CRYPTO_dynlock_value *l, const char *file,int line)
372 return(dynlock_destroy_callback);
375 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
376 (const char *file, int line))
378 dynlock_create_callback=func;
381 void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
382 struct CRYPTO_dynlock_value *l, const char *file, int line))
384 dynlock_lock_callback=func;
387 void CRYPTO_set_dynlock_destroy_callback(void (*func)
388 (struct CRYPTO_dynlock_value *l, const char *file, int line))
390 dynlock_destroy_callback=func;
394 void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
397 return(locking_callback);
400 int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
401 const char *file,int line)
403 return(add_lock_callback);
406 void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
407 const char *file,int line))
409 locking_callback=func;
412 void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
413 const char *file,int line))
415 add_lock_callback=func;
418 unsigned long (*CRYPTO_get_id_callback(void))(void)
423 void CRYPTO_set_id_callback(unsigned long (*func)(void))
428 unsigned long CRYPTO_thread_id(void)
432 if (id_callback == NULL)
434 #ifdef OPENSSL_SYS_WIN16
435 ret=(unsigned long)GetCurrentTask();
436 #elif defined(OPENSSL_SYS_WIN32)
437 ret=(unsigned long)GetCurrentThreadId();
438 #elif defined(GETPID_IS_MEANINGLESS)
441 ret=(unsigned long)getpid();
449 void CRYPTO_lock(int mode, int type, const char *file, int line)
453 char *rw_text,*operation_text;
455 if (mode & CRYPTO_LOCK)
456 operation_text="lock ";
457 else if (mode & CRYPTO_UNLOCK)
458 operation_text="unlock";
460 operation_text="ERROR ";
462 if (mode & CRYPTO_READ)
464 else if (mode & CRYPTO_WRITE)
469 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
470 CRYPTO_thread_id(), rw_text, operation_text,
471 CRYPTO_get_lock_name(type), file, line);
476 if (dynlock_lock_callback != NULL)
478 struct CRYPTO_dynlock_value *pointer
479 = CRYPTO_get_dynlock_value(type);
481 OPENSSL_assert(pointer != NULL);
483 dynlock_lock_callback(mode, pointer, file, line);
485 CRYPTO_destroy_dynlockid(type);
489 if (locking_callback != NULL)
490 locking_callback(mode,type,file,line);
493 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
498 if (add_lock_callback != NULL)
501 int before= *pointer;
504 ret=add_lock_callback(pointer,amount,type,file,line);
506 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
509 CRYPTO_get_lock_name(type),
515 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
517 ret= *pointer+amount;
519 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
522 CRYPTO_get_lock_name(type),
526 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
531 const char *CRYPTO_get_lock_name(int type)
535 else if (type < CRYPTO_NUM_LOCKS)
536 return(lock_names[type]);
537 else if (type-CRYPTO_NUM_LOCKS > sk_num(app_locks))
540 return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
544 #ifdef OPENSSL_SYS_WIN32
546 /* All we really need to do is remove the 'error' state when a thread
549 BOOL WINAPI DLLEntryPoint(HINSTANCE hinstDLL, DWORD fdwReason,
554 case DLL_PROCESS_ATTACH:
556 case DLL_THREAD_ATTACH:
558 case DLL_THREAD_DETACH:
561 case DLL_PROCESS_DETACH:
570 void OpenSSLDie(const char *file,int line,const char *assertion)
573 "%s(%d): OpenSSL internal error, assertion failed: %s\n",
574 file,line,assertion);