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
] =
171 #if CRYPTO_NUM_LOCKS != 38
172 # error "Inconsistency between crypto.h and cryptlib.c"
176 /* This is for applications to allocate new type names in the non-dynamic
177 array of lock names. These are numbered with positive numbers. */
178 static STACK
*app_locks
=NULL
;
180 /* For applications that want a more dynamic way of handling threads, the
181 following stack is used. These are externally numbered with negative
183 static STACK_OF(CRYPTO_dynlock
) *dyn_locks
=NULL
;
186 static void (MS_FAR
*locking_callback
)(int mode
,int type
,
187 const char *file
,int line
)=NULL
;
188 static int (MS_FAR
*add_lock_callback
)(int *pointer
,int amount
,
189 int type
,const char *file
,int line
)=NULL
;
190 static unsigned long (MS_FAR
*id_callback
)(void)=NULL
;
191 static struct CRYPTO_dynlock_value
*(MS_FAR
*dynlock_create_callback
)
192 (const char *file
,int line
)=NULL
;
193 static void (MS_FAR
*dynlock_lock_callback
)(int mode
,
194 struct CRYPTO_dynlock_value
*l
, const char *file
,int line
)=NULL
;
195 static void (MS_FAR
*dynlock_destroy_callback
)(struct CRYPTO_dynlock_value
*l
,
196 const char *file
,int line
)=NULL
;
198 int CRYPTO_get_new_lockid(char *name
)
203 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
204 /* A hack to make Visual C++ 5.0 work correctly when linking as
205 * a DLL using /MT. Without this, the application cannot use
206 * and floating point printf's.
207 * It also seems to be needed for Visual C 1.5 (win16) */
208 SSLeay_MSVC5_hack
=(double)name
[0]*(double)name
[1];
211 if ((app_locks
== NULL
) && ((app_locks
=sk_new_null()) == NULL
))
213 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID
,ERR_R_MALLOC_FAILURE
);
216 if ((str
=BUF_strdup(name
)) == NULL
)
218 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID
,ERR_R_MALLOC_FAILURE
);
221 i
=sk_push(app_locks
,str
);
225 i
+=CRYPTO_NUM_LOCKS
; /* gap of one :-) */
229 int CRYPTO_num_locks(void)
231 return CRYPTO_NUM_LOCKS
;
234 int CRYPTO_get_new_dynlockid(void)
237 CRYPTO_dynlock
*pointer
= NULL
;
239 if (dynlock_create_callback
== NULL
)
241 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID
,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK
);
244 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK
);
245 if ((dyn_locks
== NULL
)
246 && ((dyn_locks
=sk_CRYPTO_dynlock_new_null()) == NULL
))
248 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK
);
249 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID
,ERR_R_MALLOC_FAILURE
);
252 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK
);
254 pointer
= (CRYPTO_dynlock
*)OPENSSL_malloc(sizeof(CRYPTO_dynlock
));
257 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID
,ERR_R_MALLOC_FAILURE
);
260 pointer
->references
= 1;
261 pointer
->data
= dynlock_create_callback(__FILE__
,__LINE__
);
262 if (pointer
->data
== NULL
)
264 OPENSSL_free(pointer
);
265 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID
,ERR_R_MALLOC_FAILURE
);
269 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK
);
270 /* First, try to find an existing empty slot */
271 i
=sk_CRYPTO_dynlock_find(dyn_locks
,NULL
);
272 /* If there was none, push, thereby creating a new one */
274 /* Since sk_push() returns the number of items on the
275 stack, not the location of the pushed item, we need
276 to transform the returned number into a position,
278 i
=sk_CRYPTO_dynlock_push(dyn_locks
,pointer
) - 1;
280 /* If we found a place with a NULL pointer, put our pointer
282 sk_CRYPTO_dynlock_set(dyn_locks
,i
,pointer
);
283 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK
);
287 dynlock_destroy_callback(pointer
->data
,__FILE__
,__LINE__
);
288 OPENSSL_free(pointer
);
291 i
+= 1; /* to avoid 0 */
295 void CRYPTO_destroy_dynlockid(int i
)
297 CRYPTO_dynlock
*pointer
= NULL
;
300 if (dynlock_destroy_callback
== NULL
)
303 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK
);
305 if (dyn_locks
== NULL
|| i
>= sk_CRYPTO_dynlock_num(dyn_locks
))
307 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK
);
310 pointer
= sk_CRYPTO_dynlock_value(dyn_locks
, i
);
313 --pointer
->references
;
315 if (pointer
->references
< 0)
317 fprintf(stderr
,"CRYPTO_destroy_dynlockid, bad reference count\n");
322 if (pointer
->references
<= 0)
324 sk_CRYPTO_dynlock_set(dyn_locks
, i
, NULL
);
329 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK
);
333 dynlock_destroy_callback(pointer
->data
,__FILE__
,__LINE__
);
334 OPENSSL_free(pointer
);
338 struct CRYPTO_dynlock_value
*CRYPTO_get_dynlock_value(int i
)
340 CRYPTO_dynlock
*pointer
= NULL
;
344 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK
);
346 if (dyn_locks
!= NULL
&& i
< sk_CRYPTO_dynlock_num(dyn_locks
))
347 pointer
= sk_CRYPTO_dynlock_value(dyn_locks
, i
);
349 pointer
->references
++;
351 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK
);
354 return pointer
->data
;
358 struct CRYPTO_dynlock_value
*(*CRYPTO_get_dynlock_create_callback(void))
359 (const char *file
,int line
)
361 return(dynlock_create_callback
);
364 void (*CRYPTO_get_dynlock_lock_callback(void))(int mode
,
365 struct CRYPTO_dynlock_value
*l
, const char *file
,int line
)
367 return(dynlock_lock_callback
);
370 void (*CRYPTO_get_dynlock_destroy_callback(void))
371 (struct CRYPTO_dynlock_value
*l
, const char *file
,int line
)
373 return(dynlock_destroy_callback
);
376 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value
*(*func
)
377 (const char *file
, int line
))
379 dynlock_create_callback
=func
;
382 void CRYPTO_set_dynlock_lock_callback(void (*func
)(int mode
,
383 struct CRYPTO_dynlock_value
*l
, const char *file
, int line
))
385 dynlock_lock_callback
=func
;
388 void CRYPTO_set_dynlock_destroy_callback(void (*func
)
389 (struct CRYPTO_dynlock_value
*l
, const char *file
, int line
))
391 dynlock_destroy_callback
=func
;
395 void (*CRYPTO_get_locking_callback(void))(int mode
,int type
,const char *file
,
398 return(locking_callback
);
401 int (*CRYPTO_get_add_lock_callback(void))(int *num
,int mount
,int type
,
402 const char *file
,int line
)
404 return(add_lock_callback
);
407 void CRYPTO_set_locking_callback(void (*func
)(int mode
,int type
,
408 const char *file
,int line
))
410 locking_callback
=func
;
413 void CRYPTO_set_add_lock_callback(int (*func
)(int *num
,int mount
,int type
,
414 const char *file
,int line
))
416 add_lock_callback
=func
;
419 unsigned long (*CRYPTO_get_id_callback(void))(void)
424 void CRYPTO_set_id_callback(unsigned long (*func
)(void))
429 unsigned long CRYPTO_thread_id(void)
433 if (id_callback
== NULL
)
435 #ifdef OPENSSL_SYS_WIN16
436 ret
=(unsigned long)GetCurrentTask();
437 #elif defined(OPENSSL_SYS_WIN32)
438 ret
=(unsigned long)GetCurrentThreadId();
439 #elif defined(GETPID_IS_MEANINGLESS)
442 ret
=(unsigned long)getpid();
450 void CRYPTO_lock(int mode
, int type
, const char *file
, int line
)
454 char *rw_text
,*operation_text
;
456 if (mode
& CRYPTO_LOCK
)
457 operation_text
="lock ";
458 else if (mode
& CRYPTO_UNLOCK
)
459 operation_text
="unlock";
461 operation_text
="ERROR ";
463 if (mode
& CRYPTO_READ
)
465 else if (mode
& CRYPTO_WRITE
)
470 fprintf(stderr
,"lock:%08lx:(%s)%s %-18s %s:%d\n",
471 CRYPTO_thread_id(), rw_text
, operation_text
,
472 CRYPTO_get_lock_name(type
), file
, line
);
477 if (dynlock_lock_callback
!= NULL
)
479 struct CRYPTO_dynlock_value
*pointer
480 = CRYPTO_get_dynlock_value(type
);
482 OPENSSL_assert(pointer
!= NULL
);
484 dynlock_lock_callback(mode
, pointer
, file
, line
);
486 CRYPTO_destroy_dynlockid(type
);
490 if (locking_callback
!= NULL
)
491 locking_callback(mode
,type
,file
,line
);
494 int CRYPTO_add_lock(int *pointer
, int amount
, int type
, const char *file
,
499 if (add_lock_callback
!= NULL
)
502 int before
= *pointer
;
505 ret
=add_lock_callback(pointer
,amount
,type
,file
,line
);
507 fprintf(stderr
,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
510 CRYPTO_get_lock_name(type
),
516 CRYPTO_lock(CRYPTO_LOCK
|CRYPTO_WRITE
,type
,file
,line
);
518 ret
= *pointer
+amount
;
520 fprintf(stderr
,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
523 CRYPTO_get_lock_name(type
),
527 CRYPTO_lock(CRYPTO_UNLOCK
|CRYPTO_WRITE
,type
,file
,line
);
532 const char *CRYPTO_get_lock_name(int type
)
536 else if (type
< CRYPTO_NUM_LOCKS
)
537 return(lock_names
[type
]);
538 else if (type
-CRYPTO_NUM_LOCKS
> sk_num(app_locks
))
541 return(sk_value(app_locks
,type
-CRYPTO_NUM_LOCKS
));
545 #ifdef OPENSSL_SYS_WIN32
547 /* All we really need to do is remove the 'error' state when a thread
550 BOOL WINAPI
DLLEntryPoint(HINSTANCE hinstDLL
, DWORD fdwReason
,
555 case DLL_PROCESS_ATTACH
:
557 case DLL_THREAD_ATTACH
:
559 case DLL_THREAD_DETACH
:
562 case DLL_PROCESS_DETACH
:
571 void OpenSSLDie(const char *file
,int line
,const char *assertion
)
574 "%s(%d): OpenSSL internal error, assertion failed: %s\n",
575 file
,line
,assertion
);