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1 /* crypto/cryptlib.c */
2 /* ====================================================================
3  * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  *
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
15  *    distribution.
16  *
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/)"
21  *
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.
26  *
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.
30  *
31  * 6. Redistributions of any form whatsoever must retain the following
32  *    acknowledgment:
33  *    "This product includes software developed by the OpenSSL Project
34  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35  *
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  * ====================================================================
49  *
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).
53  *
54  */
55 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
56  * All rights reserved.
57  *
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.
61  *
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).
68  *
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.
75  *
76  * Redistribution and use in source and binary forms, with or without
77  * modification, are permitted provided that the following conditions
78  * are met:
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)"
93  *
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
104  * SUCH DAMAGE.
105  *
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.]
110  */
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.
115  */
116 
117 #include "cryptlib.h"
118 #include <openssl/safestack.h>
119 
120 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
121 static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
122 #endif
123 
124 DECLARE_STACK_OF(CRYPTO_dynlock)
125 
126 /* real #defines in crypto.h, keep these upto date */
127 static const char* const lock_names[CRYPTO_NUM_LOCKS] =
128 	{
129 	"<<ERROR>>",
130 	"err",
131 	"ex_data",
132 	"x509",
133 	"x509_info",
134 	"x509_pkey",
135 	"x509_crl",
136 	"x509_req",
137 	"dsa",
138 	"rsa",
139 	"evp_pkey",
140 	"x509_store",
141 	"ssl_ctx",
142 	"ssl_cert",
143 	"ssl_session",
144 	"ssl_sess_cert",
145 	"ssl",
146 	"ssl_method",
147 	"rand",
148 	"rand2",
149 	"debug_malloc",
150 	"BIO",
151 	"gethostbyname",
152 	"getservbyname",
153 	"readdir",
154 	"RSA_blinding",
155 	"dh",
156 	"debug_malloc2",
157 	"dso",
158 	"dynlock",
159 	"engine",
160 	"ui",
161 	"ecdsa",
162 	"ec",
163 	"ecdh",
164 	"bn",
165 	"ec_pre_comp",
166 	"store",
167 	"comp",
168 	"fips",
169 	"fips2",
170 #if CRYPTO_NUM_LOCKS != 41
171 # error "Inconsistency between crypto.h and cryptlib.c"
172 #endif
173 	};
174 
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;
178 
179 /* For applications that want a more dynamic way of handling threads, the
180    following stack is used.  These are externally numbered with negative
181    numbers.  */
182 static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL;
183 
184 
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 #ifndef OPENSSL_NO_DEPRECATED
190 static unsigned long (MS_FAR *id_callback)(void)=0;
191 #endif
192 static void (MS_FAR *threadid_callback)(CRYPTO_THREADID *)=0;
193 static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
194 	(const char *file,int line)=0;
195 static void (MS_FAR *dynlock_lock_callback)(int mode,
196 	struct CRYPTO_dynlock_value *l, const char *file,int line)=0;
197 static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
198 	const char *file,int line)=0;
199 
CRYPTO_get_new_lockid(char * name)200 int CRYPTO_get_new_lockid(char *name)
201 	{
202 	char *str;
203 	int i;
204 
205 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
206 	/* A hack to make Visual C++ 5.0 work correctly when linking as
207 	 * a DLL using /MT. Without this, the application cannot use
208 	 * any floating point printf's.
209 	 * It also seems to be needed for Visual C 1.5 (win16) */
210 	SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
211 #endif
212 
213 	if ((app_locks == NULL) && ((app_locks=sk_OPENSSL_STRING_new_null()) == NULL))
214 		{
215 		CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
216 		return(0);
217 		}
218 	if ((str=BUF_strdup(name)) == NULL)
219 		{
220 		CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
221 		return(0);
222 		}
223 	i=sk_OPENSSL_STRING_push(app_locks,str);
224 	if (!i)
225 		OPENSSL_free(str);
226 	else
227 		i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
228 	return(i);
229 	}
230 
CRYPTO_num_locks(void)231 int CRYPTO_num_locks(void)
232 	{
233 	return CRYPTO_NUM_LOCKS;
234 	}
235 
CRYPTO_get_new_dynlockid(void)236 int CRYPTO_get_new_dynlockid(void)
237 	{
238 	int i = 0;
239 	CRYPTO_dynlock *pointer = NULL;
240 
241 	if (dynlock_create_callback == NULL)
242 		{
243 		CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
244 		return(0);
245 		}
246 	CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
247 	if ((dyn_locks == NULL)
248 		&& ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
249 		{
250 		CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
251 		CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
252 		return(0);
253 		}
254 	CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
255 
256 	pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
257 	if (pointer == NULL)
258 		{
259 		CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
260 		return(0);
261 		}
262 	pointer->references = 1;
263 	pointer->data = dynlock_create_callback(__FILE__,__LINE__);
264 	if (pointer->data == NULL)
265 		{
266 		OPENSSL_free(pointer);
267 		CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
268 		return(0);
269 		}
270 
271 	CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
272 	/* First, try to find an existing empty slot */
273 	i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
274 	/* If there was none, push, thereby creating a new one */
275 	if (i == -1)
276 		/* Since sk_push() returns the number of items on the
277 		   stack, not the location of the pushed item, we need
278 		   to transform the returned number into a position,
279 		   by decreasing it.  */
280 		i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1;
281 	else
282 		/* If we found a place with a NULL pointer, put our pointer
283 		   in it.  */
284 		(void)sk_CRYPTO_dynlock_set(dyn_locks,i,pointer);
285 	CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
286 
287 	if (i == -1)
288 		{
289 		dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
290 		OPENSSL_free(pointer);
291 		}
292 	else
293 		i += 1; /* to avoid 0 */
294 	return -i;
295 	}
296 
CRYPTO_destroy_dynlockid(int i)297 void CRYPTO_destroy_dynlockid(int i)
298 	{
299 	CRYPTO_dynlock *pointer = NULL;
300 	if (i)
301 		i = -i-1;
302 	if (dynlock_destroy_callback == NULL)
303 		return;
304 
305 	CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
306 
307 	if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
308 		{
309 		CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
310 		return;
311 		}
312 	pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
313 	if (pointer != NULL)
314 		{
315 		--pointer->references;
316 #ifdef REF_CHECK
317 		if (pointer->references < 0)
318 			{
319 			fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
320 			abort();
321 			}
322 		else
323 #endif
324 			if (pointer->references <= 0)
325 				{
326 				(void)sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
327 				}
328 			else
329 				pointer = NULL;
330 		}
331 	CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
332 
333 	if (pointer)
334 		{
335 		dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
336 		OPENSSL_free(pointer);
337 		}
338 	}
339 
CRYPTO_get_dynlock_value(int i)340 struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
341 	{
342 	CRYPTO_dynlock *pointer = NULL;
343 	if (i)
344 		i = -i-1;
345 
346 	CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
347 
348 	if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
349 		pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
350 	if (pointer)
351 		pointer->references++;
352 
353 	CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
354 
355 	if (pointer)
356 		return pointer->data;
357 	return NULL;
358 	}
359 
CRYPTO_get_dynlock_create_callback(void)360 struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
361 	(const char *file,int line)
362 	{
363 	return(dynlock_create_callback);
364 	}
365 
CRYPTO_get_dynlock_lock_callback(void)366 void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
367 	struct CRYPTO_dynlock_value *l, const char *file,int line)
368 	{
369 	return(dynlock_lock_callback);
370 	}
371 
CRYPTO_get_dynlock_destroy_callback(void)372 void (*CRYPTO_get_dynlock_destroy_callback(void))
373 	(struct CRYPTO_dynlock_value *l, const char *file,int line)
374 	{
375 	return(dynlock_destroy_callback);
376 	}
377 
CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value * (* func)(const char * file,int line))378 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
379 	(const char *file, int line))
380 	{
381 	dynlock_create_callback=func;
382 	}
383 
CRYPTO_set_dynlock_lock_callback(void (* func)(int mode,struct CRYPTO_dynlock_value * l,const char * file,int line))384 void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
385 	struct CRYPTO_dynlock_value *l, const char *file, int line))
386 	{
387 	dynlock_lock_callback=func;
388 	}
389 
CRYPTO_set_dynlock_destroy_callback(void (* func)(struct CRYPTO_dynlock_value * l,const char * file,int line))390 void CRYPTO_set_dynlock_destroy_callback(void (*func)
391 	(struct CRYPTO_dynlock_value *l, const char *file, int line))
392 	{
393 	dynlock_destroy_callback=func;
394 	}
395 
396 
CRYPTO_get_locking_callback(void)397 void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
398 		int line)
399 	{
400 	return(locking_callback);
401 	}
402 
CRYPTO_get_add_lock_callback(void)403 int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
404 					  const char *file,int line)
405 	{
406 	return(add_lock_callback);
407 	}
408 
CRYPTO_set_locking_callback(void (* func)(int mode,int type,const char * file,int line))409 void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
410 					      const char *file,int line))
411 	{
412 	locking_callback=func;
413 	}
414 
CRYPTO_set_add_lock_callback(int (* func)(int * num,int mount,int type,const char * file,int line))415 void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
416 					      const char *file,int line))
417 	{
418 	add_lock_callback=func;
419 	}
420 
421 /* the memset() here and in set_pointer() seem overkill, but for the sake of
422  * CRYPTO_THREADID_cmp() this avoids any platform silliness that might cause two
423  * "equal" THREADID structs to not be memcmp()-identical. */
CRYPTO_THREADID_set_numeric(CRYPTO_THREADID * id,unsigned long val)424 void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id, unsigned long val)
425 	{
426 	memset(id, 0, sizeof(*id));
427 	id->val = val;
428 	}
429 
430 static const unsigned char hash_coeffs[] = { 3, 5, 7, 11, 13, 17, 19, 23 };
CRYPTO_THREADID_set_pointer(CRYPTO_THREADID * id,void * ptr)431 void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr)
432 	{
433 	unsigned char *dest = (void *)&id->val;
434 	unsigned int accum = 0;
435 	unsigned char dnum = sizeof(id->val);
436 
437 	memset(id, 0, sizeof(*id));
438 	id->ptr = ptr;
439 	if (sizeof(id->val) >= sizeof(id->ptr))
440 		{
441 		/* 'ptr' can be embedded in 'val' without loss of uniqueness */
442 		id->val = (unsigned long)id->ptr;
443 		return;
444 		}
445 	/* hash ptr ==> val. Each byte of 'val' gets the mod-256 total of a
446 	 * linear function over the bytes in 'ptr', the co-efficients of which
447 	 * are a sequence of low-primes (hash_coeffs is an 8-element cycle) -
448 	 * the starting prime for the sequence varies for each byte of 'val'
449 	 * (unique polynomials unless pointers are >64-bit). For added spice,
450 	 * the totals accumulate rather than restarting from zero, and the index
451 	 * of the 'val' byte is added each time (position dependence). If I was
452 	 * a black-belt, I'd scan big-endian pointers in reverse to give
453 	 * low-order bits more play, but this isn't crypto and I'd prefer nobody
454 	 * mistake it as such. Plus I'm lazy. */
455 	while (dnum--)
456 		{
457 		const unsigned char *src = (void *)&id->ptr;
458 		unsigned char snum = sizeof(id->ptr);
459 		while (snum--)
460 			accum += *(src++) * hash_coeffs[(snum + dnum) & 7];
461 		accum += dnum;
462 		*(dest++) = accum & 255;
463 		}
464 	}
465 
CRYPTO_THREADID_set_callback(void (* func)(CRYPTO_THREADID *))466 int CRYPTO_THREADID_set_callback(void (*func)(CRYPTO_THREADID *))
467 	{
468 	if (threadid_callback)
469 		return 0;
470 	threadid_callback = func;
471 	return 1;
472 	}
473 
CRYPTO_THREADID_get_callback(void)474 void (*CRYPTO_THREADID_get_callback(void))(CRYPTO_THREADID *)
475 	{
476 	return threadid_callback;
477 	}
478 
CRYPTO_THREADID_current(CRYPTO_THREADID * id)479 void CRYPTO_THREADID_current(CRYPTO_THREADID *id)
480 	{
481 	if (threadid_callback)
482 		{
483 		threadid_callback(id);
484 		return;
485 		}
486 #ifndef OPENSSL_NO_DEPRECATED
487 	/* If the deprecated callback was set, fall back to that */
488 	if (id_callback)
489 		{
490 		CRYPTO_THREADID_set_numeric(id, id_callback());
491 		return;
492 		}
493 #endif
494 	/* Else pick a backup */
495 #ifdef OPENSSL_SYS_WIN16
496 	CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentTask());
497 #elif defined(OPENSSL_SYS_WIN32)
498 	CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentThreadId());
499 #elif defined(OPENSSL_SYS_BEOS)
500 	CRYPTO_THREADID_set_numeric(id, (unsigned long)find_thread(NULL));
501 #else
502 	/* For everything else, default to using the address of 'errno' */
503 	CRYPTO_THREADID_set_pointer(id, &errno);
504 #endif
505 	}
506 
CRYPTO_THREADID_cmp(const CRYPTO_THREADID * a,const CRYPTO_THREADID * b)507 int CRYPTO_THREADID_cmp(const CRYPTO_THREADID *a, const CRYPTO_THREADID *b)
508 	{
509 	return memcmp(a, b, sizeof(*a));
510 	}
511 
CRYPTO_THREADID_cpy(CRYPTO_THREADID * dest,const CRYPTO_THREADID * src)512 void CRYPTO_THREADID_cpy(CRYPTO_THREADID *dest, const CRYPTO_THREADID *src)
513 	{
514 	memcpy(dest, src, sizeof(*src));
515 	}
516 
CRYPTO_THREADID_hash(const CRYPTO_THREADID * id)517 unsigned long CRYPTO_THREADID_hash(const CRYPTO_THREADID *id)
518 	{
519 	return id->val;
520 	}
521 
522 #ifndef OPENSSL_NO_DEPRECATED
CRYPTO_get_id_callback(void)523 unsigned long (*CRYPTO_get_id_callback(void))(void)
524 	{
525 	return(id_callback);
526 	}
527 
CRYPTO_set_id_callback(unsigned long (* func)(void))528 void CRYPTO_set_id_callback(unsigned long (*func)(void))
529 	{
530 	id_callback=func;
531 	}
532 
CRYPTO_thread_id(void)533 unsigned long CRYPTO_thread_id(void)
534 	{
535 	unsigned long ret=0;
536 
537 	if (id_callback == NULL)
538 		{
539 #ifdef OPENSSL_SYS_WIN16
540 		ret=(unsigned long)GetCurrentTask();
541 #elif defined(OPENSSL_SYS_WIN32)
542 		ret=(unsigned long)GetCurrentThreadId();
543 #elif defined(GETPID_IS_MEANINGLESS)
544 		ret=1L;
545 #elif defined(OPENSSL_SYS_BEOS)
546 		ret=(unsigned long)find_thread(NULL);
547 #else
548 		ret=(unsigned long)getpid();
549 #endif
550 		}
551 	else
552 		ret=id_callback();
553 	return(ret);
554 	}
555 #endif
556 
CRYPTO_lock(int mode,int type,const char * file,int line)557 void CRYPTO_lock(int mode, int type, const char *file, int line)
558 	{
559 #ifdef LOCK_DEBUG
560 		{
561 		CRYPTO_THREADID id;
562 		char *rw_text,*operation_text;
563 
564 		if (mode & CRYPTO_LOCK)
565 			operation_text="lock  ";
566 		else if (mode & CRYPTO_UNLOCK)
567 			operation_text="unlock";
568 		else
569 			operation_text="ERROR ";
570 
571 		if (mode & CRYPTO_READ)
572 			rw_text="r";
573 		else if (mode & CRYPTO_WRITE)
574 			rw_text="w";
575 		else
576 			rw_text="ERROR";
577 
578 		CRYPTO_THREADID_current(&id);
579 		fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
580 			CRYPTO_THREADID_hash(&id), rw_text, operation_text,
581 			CRYPTO_get_lock_name(type), file, line);
582 		}
583 #endif
584 	if (type < 0)
585 		{
586 		if (dynlock_lock_callback != NULL)
587 			{
588 			struct CRYPTO_dynlock_value *pointer
589 				= CRYPTO_get_dynlock_value(type);
590 
591 			OPENSSL_assert(pointer != NULL);
592 
593 			dynlock_lock_callback(mode, pointer, file, line);
594 
595 			CRYPTO_destroy_dynlockid(type);
596 			}
597 		}
598 	else
599 		if (locking_callback != NULL)
600 			locking_callback(mode,type,file,line);
601 	}
602 
CRYPTO_add_lock(int * pointer,int amount,int type,const char * file,int line)603 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
604 	     int line)
605 	{
606 	int ret = 0;
607 
608 	if (add_lock_callback != NULL)
609 		{
610 #ifdef LOCK_DEBUG
611 		int before= *pointer;
612 #endif
613 
614 		ret=add_lock_callback(pointer,amount,type,file,line);
615 #ifdef LOCK_DEBUG
616 		{
617 		CRYPTO_THREADID id;
618 		CRYPTO_THREADID_current(&id);
619 		fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
620 			CRYPTO_THREADID_hash(&id), before,amount,ret,
621 			CRYPTO_get_lock_name(type),
622 			file,line);
623 		}
624 #endif
625 		}
626 	else
627 		{
628 		CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
629 
630 		ret= *pointer+amount;
631 #ifdef LOCK_DEBUG
632 		{
633 		CRYPTO_THREADID id;
634 		CRYPTO_THREADID_current(&id);
635 		fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
636 			CRYPTO_THREADID_hash(&id),
637 			*pointer,amount,ret,
638 			CRYPTO_get_lock_name(type),
639 			file,line);
640 		}
641 #endif
642 		*pointer=ret;
643 		CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
644 		}
645 	return(ret);
646 	}
647 
CRYPTO_get_lock_name(int type)648 const char *CRYPTO_get_lock_name(int type)
649 	{
650 	if (type < 0)
651 		return("dynamic");
652 	else if (type < CRYPTO_NUM_LOCKS)
653 		return(lock_names[type]);
654 	else if (type-CRYPTO_NUM_LOCKS > sk_OPENSSL_STRING_num(app_locks))
655 		return("ERROR");
656 	else
657 		return(sk_OPENSSL_STRING_value(app_locks,type-CRYPTO_NUM_LOCKS));
658 	}
659 
660 #if	defined(__i386)   || defined(__i386__)   || defined(_M_IX86) || \
661 	defined(__INTEL__) || \
662 	defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
663 
664 unsigned long  OPENSSL_ia32cap_P=0;
OPENSSL_ia32cap_loc(void)665 unsigned long *OPENSSL_ia32cap_loc(void) { return &OPENSSL_ia32cap_P; }
666 
667 #if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
668 #define OPENSSL_CPUID_SETUP
OPENSSL_cpuid_setup(void)669 void OPENSSL_cpuid_setup(void)
670 { static int trigger=0;
671   unsigned long OPENSSL_ia32_cpuid(void);
672   char *env;
673 
674     if (trigger)	return;
675 
676     trigger=1;
677     if ((env=getenv("OPENSSL_ia32cap")))
678 	OPENSSL_ia32cap_P = strtoul(env,NULL,0)|(1<<10);
679     else
680 	OPENSSL_ia32cap_P = OPENSSL_ia32_cpuid()|(1<<10);
681     /*
682      * |(1<<10) sets a reserved bit to signal that variable
683      * was initialized already... This is to avoid interference
684      * with cpuid snippets in ELF .init segment.
685      */
686 }
687 #endif
688 
689 #else
OPENSSL_ia32cap_loc(void)690 unsigned long *OPENSSL_ia32cap_loc(void) { return NULL; }
691 #endif
692 int OPENSSL_NONPIC_relocated = 0;
693 #if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
OPENSSL_cpuid_setup(void)694 void OPENSSL_cpuid_setup(void) {}
695 #endif
696 
697 #if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)
698 #ifdef __CYGWIN__
699 /* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
700 #include <windows.h>
701 /* this has side-effect of _WIN32 getting defined, which otherwise
702  * is mutually exclusive with __CYGWIN__... */
703 #endif
704 
705 /* All we really need to do is remove the 'error' state when a thread
706  * detaches */
707 
DllMain(HINSTANCE hinstDLL,DWORD fdwReason,LPVOID lpvReserved)708 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
709 	     LPVOID lpvReserved)
710 	{
711 	switch(fdwReason)
712 		{
713 	case DLL_PROCESS_ATTACH:
714 		OPENSSL_cpuid_setup();
715 #if defined(_WIN32_WINNT)
716 		{
717 		IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *)hinstDLL;
718 		IMAGE_NT_HEADERS *nt_headers;
719 
720 		if (dos_header->e_magic==IMAGE_DOS_SIGNATURE)
721 			{
722 			nt_headers = (IMAGE_NT_HEADERS *)((char *)dos_header
723 						+ dos_header->e_lfanew);
724 			if (nt_headers->Signature==IMAGE_NT_SIGNATURE &&
725 			    hinstDLL!=(HINSTANCE)(nt_headers->OptionalHeader.ImageBase))
726 				OPENSSL_NONPIC_relocated=1;
727 			}
728 		}
729 #endif
730 		break;
731 	case DLL_THREAD_ATTACH:
732 		break;
733 	case DLL_THREAD_DETACH:
734 		ERR_remove_state(0);
735 		break;
736 	case DLL_PROCESS_DETACH:
737 		break;
738 		}
739 	return(TRUE);
740 	}
741 #endif
742 
743 #if defined(_WIN32) && !defined(__CYGWIN__)
744 #include <tchar.h>
745 #include <signal.h>
746 
747 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
OPENSSL_isservice(void)748 int OPENSSL_isservice(void)
749 { HWINSTA h;
750   DWORD len;
751   WCHAR *name;
752   static union { void *p; int (*f)(void); } _OPENSSL_isservice = { NULL };
753 
754     if (_OPENSSL_isservice.p == NULL) {
755 	HANDLE h = GetModuleHandle(NULL);
756 	if (h != NULL)
757 	    _OPENSSL_isservice.p = GetProcAddress(h,"_OPENSSL_isservice");
758 	if (_OPENSSL_isservice.p == NULL)
759 	    _OPENSSL_isservice.p = (void *)-1;
760     }
761 
762     if (_OPENSSL_isservice.p != (void *)-1)
763 	return (*_OPENSSL_isservice.f)();
764 
765     (void)GetDesktopWindow(); /* return value is ignored */
766 
767     h = GetProcessWindowStation();
768     if (h==NULL) return -1;
769 
770     if (GetUserObjectInformationW (h,UOI_NAME,NULL,0,&len) ||
771 	GetLastError() != ERROR_INSUFFICIENT_BUFFER)
772 	return -1;
773 
774     if (len>512) return -1;		/* paranoia */
775     len++,len&=~1;			/* paranoia */
776 #ifdef _MSC_VER
777     name=(WCHAR *)_alloca(len+sizeof(WCHAR));
778 #else
779     name=(WCHAR *)alloca(len+sizeof(WCHAR));
780 #endif
781     if (!GetUserObjectInformationW (h,UOI_NAME,name,len,&len))
782 	return -1;
783 
784     len++,len&=~1;			/* paranoia */
785     name[len/sizeof(WCHAR)]=L'\0';	/* paranoia */
786 #if 1
787     /* This doesn't cover "interactive" services [working with real
788      * WinSta0's] nor programs started non-interactively by Task
789      * Scheduler [those are working with SAWinSta]. */
790     if (wcsstr(name,L"Service-0x"))	return 1;
791 #else
792     /* This covers all non-interactive programs such as services. */
793     if (!wcsstr(name,L"WinSta0"))	return 1;
794 #endif
795     else				return 0;
796 }
797 #else
OPENSSL_isservice(void)798 int OPENSSL_isservice(void) { return 0; }
799 #endif
800 
OPENSSL_showfatal(const char * fmta,...)801 void OPENSSL_showfatal (const char *fmta,...)
802 { va_list ap;
803   TCHAR buf[256];
804   const TCHAR *fmt;
805 #ifdef STD_ERROR_HANDLE	/* what a dirty trick! */
806   HANDLE h;
807 
808     if ((h=GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
809 	GetFileType(h)!=FILE_TYPE_UNKNOWN)
810     {	/* must be console application */
811 	va_start (ap,fmta);
812 	vfprintf (stderr,fmta,ap);
813 	va_end (ap);
814 	return;
815     }
816 #endif
817 
818     if (sizeof(TCHAR)==sizeof(char))
819 	fmt=(const TCHAR *)fmta;
820     else do
821     { int    keepgoing;
822       size_t len_0=strlen(fmta)+1,i;
823       WCHAR *fmtw;
824 
825 #ifdef _MSC_VER
826 	fmtw = (WCHAR *)_alloca (len_0*sizeof(WCHAR));
827 #else
828 	fmtw = (WCHAR *)alloca (len_0*sizeof(WCHAR));
829 #endif
830 	if (fmtw == NULL) { fmt=(const TCHAR *)L"no stack?"; break; }
831 
832 #ifndef OPENSSL_NO_MULTIBYTE
833 	if (!MultiByteToWideChar(CP_ACP,0,fmta,len_0,fmtw,len_0))
834 #endif
835 	    for (i=0;i<len_0;i++) fmtw[i]=(WCHAR)fmta[i];
836 
837 	for (i=0;i<len_0;i++)
838 	{   if (fmtw[i]==L'%') do
839 	    {	keepgoing=0;
840 		switch (fmtw[i+1])
841 		{   case L'0': case L'1': case L'2': case L'3': case L'4':
842 		    case L'5': case L'6': case L'7': case L'8': case L'9':
843 		    case L'.': case L'*':
844 		    case L'-':	i++; keepgoing=1; break;
845 		    case L's':	fmtw[i+1]=L'S';   break;
846 		    case L'S':	fmtw[i+1]=L's';   break;
847 		    case L'c':	fmtw[i+1]=L'C';   break;
848 		    case L'C':	fmtw[i+1]=L'c';   break;
849 		}
850 	    } while (keepgoing);
851 	}
852 	fmt = (const TCHAR *)fmtw;
853     } while (0);
854 
855     va_start (ap,fmta);
856     _vsntprintf (buf,sizeof(buf)/sizeof(TCHAR)-1,fmt,ap);
857     buf [sizeof(buf)/sizeof(TCHAR)-1] = _T('\0');
858     va_end (ap);
859 
860 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
861     /* this -------------v--- guards NT-specific calls */
862     if (GetVersion() < 0x80000000 && OPENSSL_isservice() > 0)
863     {	HANDLE h = RegisterEventSource(0,_T("OPENSSL"));
864 	const TCHAR *pmsg=buf;
865 	ReportEvent(h,EVENTLOG_ERROR_TYPE,0,0,0,1,0,&pmsg,0);
866 	DeregisterEventSource(h);
867     }
868     else
869 #endif
870 	MessageBox (NULL,buf,_T("OpenSSL: FATAL"),MB_OK|MB_ICONSTOP);
871 }
872 #else
OPENSSL_showfatal(const char * fmta,...)873 void OPENSSL_showfatal (const char *fmta,...)
874 { va_list ap;
875 
876     va_start (ap,fmta);
877     vfprintf (stderr,fmta,ap);
878     va_end (ap);
879 }
OPENSSL_isservice(void)880 int OPENSSL_isservice (void) { return 0; }
881 #endif
882 
OpenSSLDie(const char * file,int line,const char * assertion)883 void OpenSSLDie(const char *file,int line,const char *assertion)
884 	{
885 	OPENSSL_showfatal(
886 		"%s(%d): OpenSSL internal error, assertion failed: %s\n",
887 		file,line,assertion);
888 #if !defined(_WIN32) || defined(__CYGWIN__)
889 	abort();
890 #else
891 	/* Win32 abort() customarily shows a dialog, but we just did that... */
892 	raise(SIGABRT);
893 	_exit(3);
894 #endif
895 	}
896 
OPENSSL_stderr(void)897 void *OPENSSL_stderr(void)	{ return stderr; }
898