1 /* crypto/cryptlib.c */
2 /* ====================================================================
3 * Copyright (c) 1998-2006 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.
117 #include "cryptlib.h"
118 #include <openssl/safestack.h>
120 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
121 static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
124 DECLARE_STACK_OF(CRYPTO_dynlock)
126 /* real #defines in crypto.h, keep these upto date */
127 static const char* const lock_names[CRYPTO_NUM_LOCKS] =
170 #if CRYPTO_NUM_LOCKS != 41
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_OF(OPENSSL_STRING) *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)=0;
187 static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
188 int type,const char *file,int line)=0;
189 static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
190 (const char *file,int line)=0;
191 static void (MS_FAR *dynlock_lock_callback)(int mode,
192 struct CRYPTO_dynlock_value *l, const char *file,int line)=0;
193 static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
194 const char *file,int line)=0;
196 int CRYPTO_get_new_lockid(char *name)
201 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
202 /* A hack to make Visual C++ 5.0 work correctly when linking as
203 * a DLL using /MT. Without this, the application cannot use
204 * any floating point printf's.
205 * It also seems to be needed for Visual C 1.5 (win16) */
206 SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
209 if ((app_locks == NULL) && ((app_locks=sk_OPENSSL_STRING_new_null()) == NULL))
211 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
214 if ((str=BUF_strdup(name)) == NULL)
216 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
219 i=sk_OPENSSL_STRING_push(app_locks,str);
223 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
227 int CRYPTO_num_locks(void)
229 return CRYPTO_NUM_LOCKS;
232 int CRYPTO_get_new_dynlockid(void)
235 CRYPTO_dynlock *pointer = NULL;
237 if (dynlock_create_callback == NULL)
239 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
242 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
243 if ((dyn_locks == NULL)
244 && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
246 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
247 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
250 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
252 pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
255 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
258 pointer->references = 1;
259 pointer->data = dynlock_create_callback(__FILE__,__LINE__);
260 if (pointer->data == NULL)
262 OPENSSL_free(pointer);
263 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
267 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
268 /* First, try to find an existing empty slot */
269 i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
270 /* If there was none, push, thereby creating a new one */
272 /* Since sk_push() returns the number of items on the
273 stack, not the location of the pushed item, we need
274 to transform the returned number into a position,
276 i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1;
278 /* If we found a place with a NULL pointer, put our pointer
280 (void)sk_CRYPTO_dynlock_set(dyn_locks,i,pointer);
281 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
285 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
286 OPENSSL_free(pointer);
289 i += 1; /* to avoid 0 */
293 void CRYPTO_destroy_dynlockid(int i)
295 CRYPTO_dynlock *pointer = NULL;
298 if (dynlock_destroy_callback == NULL)
301 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
303 if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
305 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
308 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
311 --pointer->references;
313 if (pointer->references < 0)
315 fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
320 if (pointer->references <= 0)
322 (void)sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
327 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
331 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
332 OPENSSL_free(pointer);
336 struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
338 CRYPTO_dynlock *pointer = NULL;
342 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
344 if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
345 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
347 pointer->references++;
349 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
352 return pointer->data;
356 struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
357 (const char *file,int line)
359 return(dynlock_create_callback);
362 void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
363 struct CRYPTO_dynlock_value *l, const char *file,int line)
365 return(dynlock_lock_callback);
368 void (*CRYPTO_get_dynlock_destroy_callback(void))
369 (struct CRYPTO_dynlock_value *l, const char *file,int line)
371 return(dynlock_destroy_callback);
374 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
375 (const char *file, int line))
377 dynlock_create_callback=func;
380 void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
381 struct CRYPTO_dynlock_value *l, const char *file, int line))
384 FIPS_set_locking_callbacks(CRYPTO_lock, CRYPTO_add_lock);
386 dynlock_lock_callback=func;
389 void CRYPTO_set_dynlock_destroy_callback(void (*func)
390 (struct CRYPTO_dynlock_value *l, const char *file, int line))
392 dynlock_destroy_callback=func;
396 void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
399 return(locking_callback);
402 int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
403 const char *file,int line)
405 return(add_lock_callback);
408 void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
409 const char *file,int line))
412 FIPS_set_locking_callbacks(CRYPTO_lock, CRYPTO_add_lock);
414 locking_callback=func;
417 void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
418 const char *file,int line))
420 add_lock_callback=func;
423 void CRYPTO_lock(int mode, int type, const char *file, int line)
428 char *rw_text,*operation_text;
430 if (mode & CRYPTO_LOCK)
431 operation_text="lock ";
432 else if (mode & CRYPTO_UNLOCK)
433 operation_text="unlock";
435 operation_text="ERROR ";
437 if (mode & CRYPTO_READ)
439 else if (mode & CRYPTO_WRITE)
444 CRYPTO_THREADID_current(&id);
445 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
446 CRYPTO_THREADID_hash(&id), rw_text, operation_text,
447 CRYPTO_get_lock_name(type), file, line);
452 if (dynlock_lock_callback != NULL)
454 struct CRYPTO_dynlock_value *pointer
455 = CRYPTO_get_dynlock_value(type);
457 OPENSSL_assert(pointer != NULL);
459 dynlock_lock_callback(mode, pointer, file, line);
461 CRYPTO_destroy_dynlockid(type);
465 if (locking_callback != NULL)
466 locking_callback(mode,type,file,line);
469 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
474 if (add_lock_callback != NULL)
477 int before= *pointer;
480 ret=add_lock_callback(pointer,amount,type,file,line);
484 CRYPTO_THREADID_current(&id);
485 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
486 CRYPTO_THREADID_hash(&id), before,amount,ret,
487 CRYPTO_get_lock_name(type),
494 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
496 ret= *pointer+amount;
500 CRYPTO_THREADID_current(&id);
501 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
502 CRYPTO_THREADID_hash(&id),
504 CRYPTO_get_lock_name(type),
509 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
514 const char *CRYPTO_get_lock_name(int type)
518 else if (type < CRYPTO_NUM_LOCKS)
519 return(lock_names[type]);
520 else if (type-CRYPTO_NUM_LOCKS > sk_OPENSSL_STRING_num(app_locks))
523 return(sk_OPENSSL_STRING_value(app_locks,type-CRYPTO_NUM_LOCKS));