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 "hwcrhk", /* This is a HACK which will disappear in 0.9.8 */
110 #if CRYPTO_NUM_LOCKS != 35
111 # error "Inconsistency between crypto.h and cryptlib.c"
115 /* This is for applications to allocate new type names in the non-dynamic
116 array of lock names. These are numbered with positive numbers. */
117 static STACK *app_locks=NULL;
119 /* For applications that want a more dynamic way of handling threads, the
120 following stack is used. These are externally numbered with negative
122 static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL;
125 static void (MS_FAR *locking_callback)(int mode,int type,
126 const char *file,int line)=NULL;
127 static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
128 int type,const char *file,int line)=NULL;
129 static unsigned long (MS_FAR *id_callback)(void)=NULL;
130 static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
131 (const char *file,int line)=NULL;
132 static void (MS_FAR *dynlock_lock_callback)(int mode,
133 struct CRYPTO_dynlock_value *l, const char *file,int line)=NULL;
134 static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
135 const char *file,int line)=NULL;
137 int CRYPTO_get_new_lockid(char *name)
142 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
143 /* A hack to make Visual C++ 5.0 work correctly when linking as
144 * a DLL using /MT. Without this, the application cannot use
145 * and floating point printf's.
146 * It also seems to be needed for Visual C 1.5 (win16) */
147 SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
150 if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
152 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
155 if ((str=BUF_strdup(name)) == NULL)
157 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
160 i=sk_push(app_locks,str);
164 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
168 int CRYPTO_num_locks(void)
170 return CRYPTO_NUM_LOCKS;
173 int CRYPTO_get_new_dynlockid(void)
176 CRYPTO_dynlock *pointer = NULL;
178 if (dynlock_create_callback == NULL)
180 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
183 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
184 if ((dyn_locks == NULL)
185 && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
187 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
188 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
191 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
193 pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
196 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
199 pointer->references = 1;
200 pointer->data = dynlock_create_callback(__FILE__,__LINE__);
201 if (pointer->data == NULL)
203 OPENSSL_free(pointer);
204 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
208 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
209 /* First, try to find an existing empty slot */
210 i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
211 /* If there was none, push, thereby creating a new one */
213 /* Since sk_push() returns the number of items on the
214 stack, not the location of the pushed item, we need
215 to transform the returned number into a position,
217 i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1;
219 /* If we found a place with a NULL pointer, put our pointer
221 sk_CRYPTO_dynlock_set(dyn_locks,i,pointer);
222 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
226 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
227 OPENSSL_free(pointer);
230 i += 1; /* to avoid 0 */
234 void CRYPTO_destroy_dynlockid(int i)
236 CRYPTO_dynlock *pointer = NULL;
239 if (dynlock_destroy_callback == NULL)
242 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
244 if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
246 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
249 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
252 --pointer->references;
254 if (pointer->references < 0)
256 fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
261 if (pointer->references <= 0)
263 sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
268 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
272 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
273 OPENSSL_free(pointer);
277 struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
279 CRYPTO_dynlock *pointer = NULL;
283 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
285 if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
286 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
288 pointer->references++;
290 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
293 return pointer->data;
297 struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
298 (const char *file,int line)
300 return(dynlock_create_callback);
303 void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
304 struct CRYPTO_dynlock_value *l, const char *file,int line)
306 return(dynlock_lock_callback);
309 void (*CRYPTO_get_dynlock_destroy_callback(void))
310 (struct CRYPTO_dynlock_value *l, const char *file,int line)
312 return(dynlock_destroy_callback);
315 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
316 (const char *file, int line))
318 dynlock_create_callback=func;
321 void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
322 struct CRYPTO_dynlock_value *l, const char *file, int line))
324 dynlock_lock_callback=func;
327 void CRYPTO_set_dynlock_destroy_callback(void (*func)
328 (struct CRYPTO_dynlock_value *l, const char *file, int line))
330 dynlock_destroy_callback=func;
334 void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
337 return(locking_callback);
340 int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
341 const char *file,int line)
343 return(add_lock_callback);
346 void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
347 const char *file,int line))
349 locking_callback=func;
352 void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
353 const char *file,int line))
355 add_lock_callback=func;
358 unsigned long (*CRYPTO_get_id_callback(void))(void)
363 void CRYPTO_set_id_callback(unsigned long (*func)(void))
368 unsigned long CRYPTO_thread_id(void)
372 if (id_callback == NULL)
374 #ifdef OPENSSL_SYS_WIN16
375 ret=(unsigned long)GetCurrentTask();
376 #elif defined(OPENSSL_SYS_WIN32)
377 ret=(unsigned long)GetCurrentThreadId();
378 #elif defined(GETPID_IS_MEANINGLESS)
381 ret=(unsigned long)getpid();
389 void CRYPTO_lock(int mode, int type, const char *file, int line)
393 char *rw_text,*operation_text;
395 if (mode & CRYPTO_LOCK)
396 operation_text="lock ";
397 else if (mode & CRYPTO_UNLOCK)
398 operation_text="unlock";
400 operation_text="ERROR ";
402 if (mode & CRYPTO_READ)
404 else if (mode & CRYPTO_WRITE)
409 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
410 CRYPTO_thread_id(), rw_text, operation_text,
411 CRYPTO_get_lock_name(type), file, line);
416 if (dynlock_lock_callback != NULL)
418 struct CRYPTO_dynlock_value *pointer
419 = CRYPTO_get_dynlock_value(type);
421 OPENSSL_assert(pointer != NULL);
423 dynlock_lock_callback(mode, pointer, file, line);
425 CRYPTO_destroy_dynlockid(type);
429 if (locking_callback != NULL)
430 locking_callback(mode,type,file,line);
433 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
438 if (add_lock_callback != NULL)
441 int before= *pointer;
444 ret=add_lock_callback(pointer,amount,type,file,line);
446 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
449 CRYPTO_get_lock_name(type),
455 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
457 ret= *pointer+amount;
459 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
462 CRYPTO_get_lock_name(type),
466 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
471 const char *CRYPTO_get_lock_name(int type)
475 else if (type < CRYPTO_NUM_LOCKS)
476 return(lock_names[type]);
477 else if (type-CRYPTO_NUM_LOCKS > sk_num(app_locks))
480 return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
484 #ifdef OPENSSL_SYS_WIN32
486 /* All we really need to do is remove the 'error' state when a thread
489 BOOL WINAPI DLLEntryPoint(HINSTANCE hinstDLL, DWORD fdwReason,
494 case DLL_PROCESS_ATTACH:
496 case DLL_THREAD_ATTACH:
498 case DLL_THREAD_DETACH:
501 case DLL_PROCESS_DETACH:
510 void OpenSSLDie(const char *file,int line,const char *assertion)
513 "%s(%d): OpenSSL internal error, assertion failed: %s\n",
514 file,line,assertion);
519 static int fips_started = 0;
520 static int fips_mode = 0;
521 static void *fips_rand_check = 0;
522 static unsigned long fips_thread = 0;
524 void fips_set_started(void)
529 int fips_is_started(void)
534 int fips_is_owning_thread(void)
538 if (fips_is_started())
540 CRYPTO_r_lock(CRYPTO_LOCK_FIPS2);
541 if (fips_thread != 0 && fips_thread == CRYPTO_thread_id())
543 CRYPTO_r_unlock(CRYPTO_LOCK_FIPS2);
548 int fips_set_owning_thread(void)
552 if (fips_is_started())
554 CRYPTO_w_lock(CRYPTO_LOCK_FIPS2);
555 if (fips_thread == 0)
557 fips_thread = CRYPTO_thread_id();
560 CRYPTO_w_unlock(CRYPTO_LOCK_FIPS2);
565 int fips_clear_owning_thread(void)
569 if (fips_is_started())
571 CRYPTO_w_lock(CRYPTO_LOCK_FIPS2);
572 if (fips_thread == CRYPTO_thread_id())
577 CRYPTO_w_unlock(CRYPTO_LOCK_FIPS2);
582 void fips_set_mode(int onoff)
584 int owning_thread = fips_is_owning_thread();
586 if (fips_is_started())
588 if (!owning_thread) CRYPTO_w_lock(CRYPTO_LOCK_FIPS);
590 if (!owning_thread) CRYPTO_w_unlock(CRYPTO_LOCK_FIPS);
594 void fips_set_rand_check(void *rand_check)
596 int owning_thread = fips_is_owning_thread();
598 if (fips_is_started())
600 if (!owning_thread) CRYPTO_w_lock(CRYPTO_LOCK_FIPS);
601 fips_rand_check = rand_check;
602 if (!owning_thread) CRYPTO_w_unlock(CRYPTO_LOCK_FIPS);
609 int owning_thread = fips_is_owning_thread();
611 if (fips_is_started())
613 if (!owning_thread) CRYPTO_r_lock(CRYPTO_LOCK_FIPS);
615 if (!owning_thread) CRYPTO_r_unlock(CRYPTO_LOCK_FIPS);
620 void *FIPS_rand_check(void)
623 int owning_thread = fips_is_owning_thread();
625 if (fips_is_started())
627 if (!owning_thread) CRYPTO_r_lock(CRYPTO_LOCK_FIPS);
628 ret = fips_rand_check;
629 if (!owning_thread) CRYPTO_r_unlock(CRYPTO_LOCK_FIPS);
634 #endif /* OPENSSL_FIPS */