1 /* crypto/cryptlib.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
62 #include <openssl/crypto.h>
63 #include <openssl/safestack.h>
65 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
66 static double SSLeay_MSVC5_hack
=0.0; /* and for VC1.5 */
69 DECLARE_STACK_OF(CRYPTO_dynlock
)
70 IMPLEMENT_STACK_OF(CRYPTO_dynlock
)
72 /* real #defines in crypto.h, keep these upto date */
73 static const char* lock_names
[CRYPTO_NUM_LOCKS
] =
107 #if CRYPTO_NUM_LOCKS != 32
108 # error "Inconsistency between crypto.h and cryptlib.c"
112 /* This is for applications to allocate new type names in the non-dynamic
113 array of lock names. These are numbered with positive numbers. */
114 static STACK
*app_locks
=NULL
;
116 /* For applications that want a more dynamic way of handling threads, the
117 following stack is used. These are externally numbered with negative
119 static STACK_OF(CRYPTO_dynlock
) *dyn_locks
=NULL
;
122 static void (MS_FAR
*locking_callback
)(int mode
,int type
,
123 const char *file
,int line
)=NULL
;
124 static int (MS_FAR
*add_lock_callback
)(int *pointer
,int amount
,
125 int type
,const char *file
,int line
)=NULL
;
126 static unsigned long (MS_FAR
*id_callback
)(void)=NULL
;
127 static struct CRYPTO_dynlock_value
*(MS_FAR
*dynlock_create_callback
)
128 (const char *file
,int line
)=NULL
;
129 static void (MS_FAR
*dynlock_lock_callback
)(int mode
,
130 struct CRYPTO_dynlock_value
*l
, const char *file
,int line
)=NULL
;
131 static void (MS_FAR
*dynlock_destroy_callback
)(struct CRYPTO_dynlock_value
*l
,
132 const char *file
,int line
)=NULL
;
134 int CRYPTO_get_new_lockid(char *name
)
139 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
140 /* A hack to make Visual C++ 5.0 work correctly when linking as
141 * a DLL using /MT. Without this, the application cannot use
142 * and floating point printf's.
143 * It also seems to be needed for Visual C 1.5 (win16) */
144 SSLeay_MSVC5_hack
=(double)name
[0]*(double)name
[1];
147 if ((app_locks
== NULL
) && ((app_locks
=sk_new_null()) == NULL
))
149 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID
,ERR_R_MALLOC_FAILURE
);
152 if ((str
=BUF_strdup(name
)) == NULL
)
154 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID
,ERR_R_MALLOC_FAILURE
);
157 i
=sk_push(app_locks
,str
);
161 i
+=CRYPTO_NUM_LOCKS
; /* gap of one :-) */
165 int CRYPTO_num_locks(void)
167 return CRYPTO_NUM_LOCKS
;
170 int CRYPTO_get_new_dynlockid(void)
173 CRYPTO_dynlock
*pointer
= NULL
;
175 if (dynlock_create_callback
== NULL
)
177 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID
,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK
);
180 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK
);
181 if ((dyn_locks
== NULL
)
182 && ((dyn_locks
=sk_CRYPTO_dynlock_new_null()) == NULL
))
184 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK
);
185 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID
,ERR_R_MALLOC_FAILURE
);
188 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK
);
190 pointer
= (CRYPTO_dynlock
*)OPENSSL_malloc(sizeof(CRYPTO_dynlock
));
193 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID
,ERR_R_MALLOC_FAILURE
);
196 pointer
->references
= 1;
197 pointer
->data
= dynlock_create_callback(__FILE__
,__LINE__
);
198 if (pointer
->data
== NULL
)
200 OPENSSL_free(pointer
);
201 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID
,ERR_R_MALLOC_FAILURE
);
205 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK
);
206 /* First, try to find an existing empty slot */
207 i
=sk_CRYPTO_dynlock_find(dyn_locks
,NULL
);
208 /* If there was none, push, thereby creating a new one */
210 i
=sk_CRYPTO_dynlock_push(dyn_locks
,pointer
);
211 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK
);
215 dynlock_destroy_callback(pointer
->data
,__FILE__
,__LINE__
);
216 OPENSSL_free(pointer
);
219 i
+= 1; /* to avoid 0 */
223 void CRYPTO_destroy_dynlockid(int i
)
225 CRYPTO_dynlock
*pointer
= NULL
;
228 if (dynlock_destroy_callback
== NULL
)
231 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK
);
233 if (dyn_locks
== NULL
|| i
>= sk_CRYPTO_dynlock_num(dyn_locks
))
235 pointer
= sk_CRYPTO_dynlock_value(dyn_locks
, i
);
238 --pointer
->references
;
240 if (pointer
->references
< 0)
242 fprintf(stderr
,"CRYPTO_destroy_dynlockid, bad reference count\n");
247 if (pointer
->references
<= 0)
249 sk_CRYPTO_dynlock_set(dyn_locks
, i
, NULL
);
254 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK
);
258 dynlock_destroy_callback(pointer
->data
,__FILE__
,__LINE__
);
259 OPENSSL_free(pointer
);
263 struct CRYPTO_dynlock_value
*CRYPTO_get_dynlock_value(int i
)
265 CRYPTO_dynlock
*pointer
= NULL
;
269 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK
);
271 if (dyn_locks
!= NULL
&& i
< sk_CRYPTO_dynlock_num(dyn_locks
))
272 pointer
= sk_CRYPTO_dynlock_value(dyn_locks
, i
);
274 pointer
->references
++;
276 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK
);
279 return pointer
->data
;
283 struct CRYPTO_dynlock_value
*(*CRYPTO_get_dynlock_create_callback(void))
284 (const char *file
,int line
)
286 return(dynlock_create_callback
);
289 void (*CRYPTO_get_dynlock_lock_callback(void))(int mode
,
290 struct CRYPTO_dynlock_value
*l
, const char *file
,int line
)
292 return(dynlock_lock_callback
);
295 void (*CRYPTO_get_dynlock_destroy_callback(void))
296 (struct CRYPTO_dynlock_value
*l
, const char *file
,int line
)
298 return(dynlock_destroy_callback
);
301 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value
*(*func
)
302 (const char *file
, int line
))
304 dynlock_create_callback
=func
;
307 void CRYPTO_set_dynlock_lock_callback(void (*func
)(int mode
,
308 struct CRYPTO_dynlock_value
*l
, const char *file
, int line
))
310 dynlock_lock_callback
=func
;
313 void CRYPTO_set_dynlock_destroy_callback(void (*func
)
314 (struct CRYPTO_dynlock_value
*l
, const char *file
, int line
))
316 dynlock_destroy_callback
=func
;
320 void (*CRYPTO_get_locking_callback(void))(int mode
,int type
,const char *file
,
323 return(locking_callback
);
326 int (*CRYPTO_get_add_lock_callback(void))(int *num
,int mount
,int type
,
327 const char *file
,int line
)
329 return(add_lock_callback
);
332 void CRYPTO_set_locking_callback(void (*func
)(int mode
,int type
,
333 const char *file
,int line
))
335 locking_callback
=func
;
338 void CRYPTO_set_add_lock_callback(int (*func
)(int *num
,int mount
,int type
,
339 const char *file
,int line
))
341 add_lock_callback
=func
;
344 unsigned long (*CRYPTO_get_id_callback(void))(void)
349 void CRYPTO_set_id_callback(unsigned long (*func
)(void))
354 unsigned long CRYPTO_thread_id(void)
358 if (id_callback
== NULL
)
360 #ifdef OPENSSL_SYS_WIN16
361 ret
=(unsigned long)GetCurrentTask();
362 #elif defined(OPENSSL_SYS_WIN32)
363 ret
=(unsigned long)GetCurrentThreadId();
364 #elif defined(GETPID_IS_MEANINGLESS)
367 ret
=(unsigned long)getpid();
375 void CRYPTO_lock(int mode
, int type
, const char *file
, int line
)
379 char *rw_text
,*operation_text
;
381 if (mode
& CRYPTO_LOCK
)
382 operation_text
="lock ";
383 else if (mode
& CRYPTO_UNLOCK
)
384 operation_text
="unlock";
386 operation_text
="ERROR ";
388 if (mode
& CRYPTO_READ
)
390 else if (mode
& CRYPTO_WRITE
)
395 fprintf(stderr
,"lock:%08lx:(%s)%s %-18s %s:%d\n",
396 CRYPTO_thread_id(), rw_text
, operation_text
,
397 CRYPTO_get_lock_name(type
), file
, line
);
402 struct CRYPTO_dynlock_value
*pointer
403 = CRYPTO_get_dynlock_value(type
);
405 if (pointer
&& dynlock_lock_callback
)
407 dynlock_lock_callback(mode
, pointer
, file
, line
);
410 CRYPTO_destroy_dynlockid(type
);
413 if (locking_callback
!= NULL
)
414 locking_callback(mode
,type
,file
,line
);
417 int CRYPTO_add_lock(int *pointer
, int amount
, int type
, const char *file
,
422 if (add_lock_callback
!= NULL
)
425 int before
= *pointer
;
428 ret
=add_lock_callback(pointer
,amount
,type
,file
,line
);
430 fprintf(stderr
,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
433 CRYPTO_get_lock_name(type
),
439 CRYPTO_lock(CRYPTO_LOCK
|CRYPTO_WRITE
,type
,file
,line
);
441 ret
= *pointer
+amount
;
443 fprintf(stderr
,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
446 CRYPTO_get_lock_name(type
),
450 CRYPTO_lock(CRYPTO_UNLOCK
|CRYPTO_WRITE
,type
,file
,line
);
455 const char *CRYPTO_get_lock_name(int type
)
459 else if (type
< CRYPTO_NUM_LOCKS
)
460 return(lock_names
[type
]);
461 else if (type
-CRYPTO_NUM_LOCKS
>= sk_num(app_locks
))
464 return(sk_value(app_locks
,type
-CRYPTO_NUM_LOCKS
));
468 #ifdef OPENSSL_SYS_WIN32
470 /* All we really need to do is remove the 'error' state when a thread
473 BOOL WINAPI
DLLEntryPoint(HINSTANCE hinstDLL
, DWORD fdwReason
,
478 case DLL_PROCESS_ATTACH
:
480 case DLL_THREAD_ATTACH
:
482 case DLL_THREAD_DETACH
:
485 case DLL_PROCESS_DETACH
: