1 /* crypto/cryptlib.c */
2 /* ====================================================================
3 * Copyright (c) 1998-2019 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 "<<ERROR>>",
129 "err",
130 "ex_data",
131 "x509",
132 "x509_info",
133 "x509_pkey",
134 "x509_crl",
135 "x509_req",
136 "dsa",
137 "rsa",
138 "evp_pkey",
139 "x509_store",
140 "ssl_ctx",
141 "ssl_cert",
142 "ssl_session",
143 "ssl_sess_cert",
144 "ssl",
145 "ssl_method",
146 "rand",
147 "rand2",
148 "debug_malloc",
149 "BIO",
150 "gethostbyname",
151 "getservbyname",
152 "readdir",
153 "RSA_blinding",
154 "dh",
155 "debug_malloc2",
156 "dso",
157 "dynlock",
158 "engine",
159 "ui",
160 "ecdsa",
161 "ec",
162 "ecdh",
163 "bn",
164 "ec_pre_comp",
165 "store",
166 "comp",
167 "fips",
168 "fips2",
169 #if CRYPTO_NUM_LOCKS != 41
170 # error "Inconsistency between crypto.h and cryptlib.c"
171 #endif
172 };
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 */
178 static STACK_OF(OPENSSL_STRING) *app_locks = NULL;
179
180 /*
181 * For applications that want a more dynamic way of handling threads, the
182 * following stack is used. These are externally numbered with negative
183 * numbers.
184 */
185 static STACK_OF(CRYPTO_dynlock) *dyn_locks = NULL;
186
187 static void (MS_FAR *locking_callback) (int mode, int type,
188 const char *file, int line) = 0;
189 static int (MS_FAR *add_lock_callback) (int *pointer, int amount,
190 int type, const char *file,
191 int line) = 0;
192 #ifndef OPENSSL_NO_DEPRECATED
193 static unsigned long (MS_FAR *id_callback) (void) = 0;
194 #endif
195 static void (MS_FAR *threadid_callback) (CRYPTO_THREADID *) = 0;
196 static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
197 (const char *file, int line) = 0;
198 static void (MS_FAR *dynlock_lock_callback) (int mode,
199 struct CRYPTO_dynlock_value *l,
200 const char *file, int line) = 0;
201 static void (MS_FAR *dynlock_destroy_callback) (struct CRYPTO_dynlock_value
202 *l, const char *file,
203 int line) = 0;
204
CRYPTO_get_new_lockid(char * name)205 int CRYPTO_get_new_lockid(char *name)
206 {
207 char *str;
208 int i;
209
210 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
211 /*
212 * A hack to make Visual C++ 5.0 work correctly when linking as a DLL
213 * using /MT. Without this, the application cannot use any floating point
214 * printf's. It also seems to be needed for Visual C 1.5 (win16)
215 */
216 SSLeay_MSVC5_hack = (double)name[0] * (double)name[1];
217 #endif
218
219 if ((app_locks == NULL)
220 && ((app_locks = sk_OPENSSL_STRING_new_null()) == NULL)) {
221 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID, ERR_R_MALLOC_FAILURE);
222 return (0);
223 }
224 if ((str = BUF_strdup(name)) == NULL) {
225 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID, ERR_R_MALLOC_FAILURE);
226 return (0);
227 }
228 i = sk_OPENSSL_STRING_push(app_locks, str);
229 if (!i)
230 OPENSSL_free(str);
231 else
232 i += CRYPTO_NUM_LOCKS; /* gap of one :-) */
233 return (i);
234 }
235
CRYPTO_num_locks(void)236 int CRYPTO_num_locks(void)
237 {
238 return CRYPTO_NUM_LOCKS;
239 }
240
CRYPTO_get_new_dynlockid(void)241 int CRYPTO_get_new_dynlockid(void)
242 {
243 int i = 0;
244 CRYPTO_dynlock *pointer = NULL;
245
246 if (dynlock_create_callback == NULL) {
247 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,
248 CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
249 return (0);
250 }
251 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
252 if ((dyn_locks == NULL)
253 && ((dyn_locks = sk_CRYPTO_dynlock_new_null()) == NULL)) {
254 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
255 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID, ERR_R_MALLOC_FAILURE);
256 return (0);
257 }
258 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
259
260 pointer = (CRYPTO_dynlock *) OPENSSL_malloc(sizeof(CRYPTO_dynlock));
261 if (pointer == NULL) {
262 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID, ERR_R_MALLOC_FAILURE);
263 return (0);
264 }
265 pointer->references = 1;
266 pointer->data = dynlock_create_callback(__FILE__, __LINE__);
267 if (pointer->data == NULL) {
268 OPENSSL_free(pointer);
269 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID, ERR_R_MALLOC_FAILURE);
270 return (0);
271 }
272
273 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
274 /* First, try to find an existing empty slot */
275 i = sk_CRYPTO_dynlock_find(dyn_locks, NULL);
276 /* If there was none, push, thereby creating a new one */
277 if (i == -1)
278 /*
279 * Since sk_push() returns the number of items on the stack, not the
280 * location of the pushed item, we need to transform the returned
281 * number into a position, by decreasing it.
282 */
283 i = sk_CRYPTO_dynlock_push(dyn_locks, pointer) - 1;
284 else
285 /*
286 * If we found a place with a NULL pointer, put our pointer in it.
287 */
288 (void)sk_CRYPTO_dynlock_set(dyn_locks, i, pointer);
289 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
290
291 if (i == -1) {
292 dynlock_destroy_callback(pointer->data, __FILE__, __LINE__);
293 OPENSSL_free(pointer);
294 } else
295 i += 1; /* to avoid 0 */
296 return -i;
297 }
298
CRYPTO_destroy_dynlockid(int i)299 void CRYPTO_destroy_dynlockid(int i)
300 {
301 CRYPTO_dynlock *pointer = NULL;
302 if (i)
303 i = -i - 1;
304 if (dynlock_destroy_callback == NULL)
305 return;
306
307 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
308
309 if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks)) {
310 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
311 return;
312 }
313 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
314 if (pointer != NULL) {
315 --pointer->references;
316 #ifdef REF_CHECK
317 if (pointer->references < 0) {
318 fprintf(stderr,
319 "CRYPTO_destroy_dynlockid, bad reference count\n");
320 abort();
321 } else
322 #endif
323 if (pointer->references <= 0) {
324 (void)sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
325 } else
326 pointer = NULL;
327 }
328 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
329
330 if (pointer) {
331 dynlock_destroy_callback(pointer->data, __FILE__, __LINE__);
332 OPENSSL_free(pointer);
333 }
334 }
335
CRYPTO_get_dynlock_value(int i)336 struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
337 {
338 CRYPTO_dynlock *pointer = NULL;
339 if (i)
340 i = -i - 1;
341
342 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
343
344 if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
345 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
346 if (pointer)
347 pointer->references++;
348
349 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
350
351 if (pointer)
352 return pointer->data;
353 return NULL;
354 }
355
CRYPTO_get_dynlock_create_callback(void)356 struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
357 (const char *file, int line) {
358 return (dynlock_create_callback);
359 }
360
CRYPTO_get_dynlock_lock_callback(void)361 void (*CRYPTO_get_dynlock_lock_callback(void)) (int mode,
362 struct CRYPTO_dynlock_value
363 *l, const char *file,
364 int line) {
365 return (dynlock_lock_callback);
366 }
367
CRYPTO_get_dynlock_destroy_callback(void)368 void (*CRYPTO_get_dynlock_destroy_callback(void))
369 (struct CRYPTO_dynlock_value *l, const char *file, int line) {
370 return (dynlock_destroy_callback);
371 }
372
CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value * (* func)(const char * file,int line))373 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
374 (const char *file, int line))
375 {
376 dynlock_create_callback = func;
377 }
378
CRYPTO_set_dynlock_lock_callback(void (* func)(int mode,struct CRYPTO_dynlock_value * l,const char * file,int line))379 void CRYPTO_set_dynlock_lock_callback(void (*func) (int mode,
380 struct
381 CRYPTO_dynlock_value *l,
382 const char *file,
383 int line))
384 {
385 dynlock_lock_callback = func;
386 }
387
CRYPTO_set_dynlock_destroy_callback(void (* func)(struct CRYPTO_dynlock_value * l,const char * file,int line))388 void CRYPTO_set_dynlock_destroy_callback(void (*func)
389 (struct CRYPTO_dynlock_value *l,
390 const char *file, int line))
391 {
392 dynlock_destroy_callback = func;
393 }
394
CRYPTO_get_locking_callback(void)395 void (*CRYPTO_get_locking_callback(void)) (int mode, int type,
396 const char *file, int line) {
397 return (locking_callback);
398 }
399
CRYPTO_get_add_lock_callback(void)400 int (*CRYPTO_get_add_lock_callback(void)) (int *num, int mount, int type,
401 const char *file, int line) {
402 return (add_lock_callback);
403 }
404
CRYPTO_set_locking_callback(void (* func)(int mode,int type,const char * file,int line))405 void CRYPTO_set_locking_callback(void (*func) (int mode, int type,
406 const char *file, int line))
407 {
408 /*
409 * Calling this here ensures initialisation before any threads are
410 * started.
411 */
412 OPENSSL_init();
413 locking_callback = func;
414 }
415
CRYPTO_set_add_lock_callback(int (* func)(int * num,int mount,int type,const char * file,int line))416 void CRYPTO_set_add_lock_callback(int (*func) (int *num, int mount, int type,
417 const char *file, int line))
418 {
419 add_lock_callback = func;
420 }
421
422 /*
423 * the memset() here and in set_pointer() seem overkill, but for the sake of
424 * CRYPTO_THREADID_cmp() this avoids any platform silliness that might cause
425 * two "equal" THREADID structs to not be memcmp()-identical.
426 */
CRYPTO_THREADID_set_numeric(CRYPTO_THREADID * id,unsigned long val)427 void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id, unsigned long val)
428 {
429 memset(id, 0, sizeof(*id));
430 id->val = val;
431 }
432
433 static const unsigned char hash_coeffs[] = { 3, 5, 7, 11, 13, 17, 19, 23 };
434
CRYPTO_THREADID_set_pointer(CRYPTO_THREADID * id,void * ptr)435 void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr)
436 {
437 unsigned char *dest = (void *)&id->val;
438 unsigned int accum = 0;
439 unsigned char dnum = sizeof(id->val);
440
441 memset(id, 0, sizeof(*id));
442 id->ptr = ptr;
443 if (sizeof(id->val) >= sizeof(id->ptr)) {
444 /*
445 * 'ptr' can be embedded in 'val' without loss of uniqueness
446 */
447 id->val = (unsigned long)id->ptr;
448 return;
449 }
450 /*
451 * hash ptr ==> val. Each byte of 'val' gets the mod-256 total of a
452 * linear function over the bytes in 'ptr', the co-efficients of which
453 * are a sequence of low-primes (hash_coeffs is an 8-element cycle) - the
454 * starting prime for the sequence varies for each byte of 'val' (unique
455 * polynomials unless pointers are >64-bit). For added spice, the totals
456 * accumulate rather than restarting from zero, and the index of the
457 * 'val' byte is added each time (position dependence). If I was a
458 * black-belt, I'd scan big-endian pointers in reverse to give low-order
459 * bits more play, but this isn't crypto and I'd prefer nobody mistake it
460 * as such. Plus I'm lazy.
461 */
462 while (dnum--) {
463 const unsigned char *src = (void *)&id->ptr;
464 unsigned char snum = sizeof(id->ptr);
465 while (snum--)
466 accum += *(src++) * hash_coeffs[(snum + dnum) & 7];
467 accum += dnum;
468 *(dest++) = accum & 255;
469 }
470 }
471
472 #ifdef OPENSSL_FIPS
473 extern int FIPS_crypto_threadid_set_callback(void (*func) (CRYPTO_THREADID *));
474 #endif
475
CRYPTO_THREADID_set_callback(void (* func)(CRYPTO_THREADID *))476 int CRYPTO_THREADID_set_callback(void (*func) (CRYPTO_THREADID *))
477 {
478 if (threadid_callback)
479 return 0;
480 threadid_callback = func;
481 #ifdef OPENSSL_FIPS
482 FIPS_crypto_threadid_set_callback(func);
483 #endif
484 return 1;
485 }
486
CRYPTO_THREADID_get_callback(void)487 void (*CRYPTO_THREADID_get_callback(void)) (CRYPTO_THREADID *) {
488 return threadid_callback;
489 }
490
CRYPTO_THREADID_current(CRYPTO_THREADID * id)491 void CRYPTO_THREADID_current(CRYPTO_THREADID *id)
492 {
493 if (threadid_callback) {
494 threadid_callback(id);
495 return;
496 }
497 #ifndef OPENSSL_NO_DEPRECATED
498 /* If the deprecated callback was set, fall back to that */
499 if (id_callback) {
500 CRYPTO_THREADID_set_numeric(id, id_callback());
501 return;
502 }
503 #endif
504 /* Else pick a backup */
505 #ifdef OPENSSL_SYS_WIN16
506 CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentTask());
507 #elif defined(OPENSSL_SYS_WIN32)
508 CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentThreadId());
509 #elif defined(OPENSSL_SYS_BEOS)
510 CRYPTO_THREADID_set_numeric(id, (unsigned long)find_thread(NULL));
511 #else
512 /* For everything else, default to using the address of 'errno' */
513 CRYPTO_THREADID_set_pointer(id, (void *)&errno);
514 #endif
515 }
516
CRYPTO_THREADID_cmp(const CRYPTO_THREADID * a,const CRYPTO_THREADID * b)517 int CRYPTO_THREADID_cmp(const CRYPTO_THREADID *a, const CRYPTO_THREADID *b)
518 {
519 return memcmp(a, b, sizeof(*a));
520 }
521
CRYPTO_THREADID_cpy(CRYPTO_THREADID * dest,const CRYPTO_THREADID * src)522 void CRYPTO_THREADID_cpy(CRYPTO_THREADID *dest, const CRYPTO_THREADID *src)
523 {
524 memcpy(dest, src, sizeof(*src));
525 }
526
CRYPTO_THREADID_hash(const CRYPTO_THREADID * id)527 unsigned long CRYPTO_THREADID_hash(const CRYPTO_THREADID *id)
528 {
529 return id->val;
530 }
531
532 #ifndef OPENSSL_NO_DEPRECATED
CRYPTO_get_id_callback(void)533 unsigned long (*CRYPTO_get_id_callback(void)) (void) {
534 return (id_callback);
535 }
536
CRYPTO_set_id_callback(unsigned long (* func)(void))537 void CRYPTO_set_id_callback(unsigned long (*func) (void))
538 {
539 id_callback = func;
540 }
541
CRYPTO_thread_id(void)542 unsigned long CRYPTO_thread_id(void)
543 {
544 unsigned long ret = 0;
545
546 if (id_callback == NULL) {
547 # ifdef OPENSSL_SYS_WIN16
548 ret = (unsigned long)GetCurrentTask();
549 # elif defined(OPENSSL_SYS_WIN32)
550 ret = (unsigned long)GetCurrentThreadId();
551 # elif defined(GETPID_IS_MEANINGLESS)
552 ret = 1L;
553 # elif defined(OPENSSL_SYS_BEOS)
554 ret = (unsigned long)find_thread(NULL);
555 # else
556 ret = (unsigned long)getpid();
557 # endif
558 } else
559 ret = id_callback();
560 return (ret);
561 }
562 #endif
563
CRYPTO_lock(int mode,int type,const char * file,int line)564 void CRYPTO_lock(int mode, int type, const char *file, int line)
565 {
566 #ifdef LOCK_DEBUG
567 {
568 CRYPTO_THREADID id;
569 char *rw_text, *operation_text;
570
571 if (mode & CRYPTO_LOCK)
572 operation_text = "lock ";
573 else if (mode & CRYPTO_UNLOCK)
574 operation_text = "unlock";
575 else
576 operation_text = "ERROR ";
577
578 if (mode & CRYPTO_READ)
579 rw_text = "r";
580 else if (mode & CRYPTO_WRITE)
581 rw_text = "w";
582 else
583 rw_text = "ERROR";
584
585 CRYPTO_THREADID_current(&id);
586 fprintf(stderr, "lock:%08lx:(%s)%s %-18s %s:%d\n",
587 CRYPTO_THREADID_hash(&id), rw_text, operation_text,
588 CRYPTO_get_lock_name(type), file, line);
589 }
590 #endif
591 if (type < 0) {
592 if (dynlock_lock_callback != NULL) {
593 struct CRYPTO_dynlock_value *pointer
594 = CRYPTO_get_dynlock_value(type);
595
596 OPENSSL_assert(pointer != NULL);
597
598 dynlock_lock_callback(mode, pointer, file, line);
599
600 CRYPTO_destroy_dynlockid(type);
601 }
602 } else if (locking_callback != NULL)
603 locking_callback(mode, type, file, line);
604 }
605
CRYPTO_add_lock(int * pointer,int amount,int type,const char * file,int line)606 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
607 int line)
608 {
609 int ret = 0;
610
611 if (add_lock_callback != NULL) {
612 #ifdef LOCK_DEBUG
613 int before = *pointer;
614 #endif
615
616 ret = add_lock_callback(pointer, amount, type, file, line);
617 #ifdef LOCK_DEBUG
618 {
619 CRYPTO_THREADID id;
620 CRYPTO_THREADID_current(&id);
621 fprintf(stderr, "ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
622 CRYPTO_THREADID_hash(&id), before, amount, ret,
623 CRYPTO_get_lock_name(type), file, line);
624 }
625 #endif
626 } else {
627 CRYPTO_lock(CRYPTO_LOCK | CRYPTO_WRITE, type, file, line);
628
629 ret = *pointer + amount;
630 #ifdef LOCK_DEBUG
631 {
632 CRYPTO_THREADID id;
633 CRYPTO_THREADID_current(&id);
634 fprintf(stderr, "ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
635 CRYPTO_THREADID_hash(&id),
636 *pointer, amount, ret,
637 CRYPTO_get_lock_name(type), file, line);
638 }
639 #endif
640 *pointer = ret;
641 CRYPTO_lock(CRYPTO_UNLOCK | CRYPTO_WRITE, type, file, line);
642 }
643 return (ret);
644 }
645
CRYPTO_get_lock_name(int type)646 const char *CRYPTO_get_lock_name(int type)
647 {
648 if (type < 0)
649 return ("dynamic");
650 else if (type < CRYPTO_NUM_LOCKS)
651 return (lock_names[type]);
652 else if (type - CRYPTO_NUM_LOCKS > sk_OPENSSL_STRING_num(app_locks))
653 return ("ERROR");
654 else
655 return (sk_OPENSSL_STRING_value(app_locks, type - CRYPTO_NUM_LOCKS));
656 }
657
658 #if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
659 defined(__INTEL__) || \
660 defined(__x86_64) || defined(__x86_64__) || \
661 defined(_M_AMD64) || defined(_M_X64)
662
663 extern unsigned int OPENSSL_ia32cap_P[4];
OPENSSL_ia32cap_loc(void)664 unsigned long *OPENSSL_ia32cap_loc(void)
665 {
666 if (sizeof(long) == 4)
667 /*
668 * If 32-bit application pulls address of OPENSSL_ia32cap_P[0]
669 * clear second element to maintain the illusion that vector
670 * is 32-bit.
671 */
672 OPENSSL_ia32cap_P[1] = 0;
673
674 OPENSSL_ia32cap_P[2] = 0;
675
676 return (unsigned long *)OPENSSL_ia32cap_P;
677 }
678
679 # if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
680 # define OPENSSL_CPUID_SETUP
681 # if defined(_WIN32)
682 typedef unsigned __int64 IA32CAP;
683 # else
684 typedef unsigned long long IA32CAP;
685 # endif
OPENSSL_cpuid_setup(void)686 void OPENSSL_cpuid_setup(void)
687 {
688 static int trigger = 0;
689 IA32CAP OPENSSL_ia32_cpuid(unsigned int *);
690 IA32CAP vec;
691 char *env;
692
693 if (trigger)
694 return;
695
696 trigger = 1;
697 if ((env = getenv("OPENSSL_ia32cap"))) {
698 int off = (env[0] == '~') ? 1 : 0;
699 # if defined(_WIN32)
700 if (!sscanf(env + off, "%I64i", &vec))
701 vec = strtoul(env + off, NULL, 0);
702 # else
703 if (!sscanf(env + off, "%lli", (long long *)&vec))
704 vec = strtoul(env + off, NULL, 0);
705 # endif
706 if (off)
707 vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P) & ~vec;
708 else if (env[0] == ':')
709 vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
710
711 OPENSSL_ia32cap_P[2] = 0;
712 if ((env = strchr(env, ':'))) {
713 unsigned int vecx;
714 env++;
715 off = (env[0] == '~') ? 1 : 0;
716 vecx = strtoul(env + off, NULL, 0);
717 if (off)
718 OPENSSL_ia32cap_P[2] &= ~vecx;
719 else
720 OPENSSL_ia32cap_P[2] = vecx;
721 }
722 } else
723 vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
724
725 /*
726 * |(1<<10) sets a reserved bit to signal that variable
727 * was initialized already... This is to avoid interference
728 * with cpuid snippets in ELF .init segment.
729 */
730 OPENSSL_ia32cap_P[0] = (unsigned int)vec | (1 << 10);
731 OPENSSL_ia32cap_P[1] = (unsigned int)(vec >> 32);
732 }
733 # else
734 unsigned int OPENSSL_ia32cap_P[4];
735 # endif
736
737 #else
OPENSSL_ia32cap_loc(void)738 unsigned long *OPENSSL_ia32cap_loc(void)
739 {
740 return NULL;
741 }
742 #endif
743 int OPENSSL_NONPIC_relocated = 0;
744 #if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
OPENSSL_cpuid_setup(void)745 void OPENSSL_cpuid_setup(void)
746 {
747 }
748
OPENSSL_rdtsc(void)749 unsigned long OPENSSL_rdtsc(void)
750 {
751 return 0;
752 }
753 #endif
754
755 #if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)
756 # ifdef __CYGWIN__
757 /* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
758 # include <windows.h>
759 /*
760 * this has side-effect of _WIN32 getting defined, which otherwise is
761 * mutually exclusive with __CYGWIN__...
762 */
763 # endif
764
765 /*
766 * All we really need to do is remove the 'error' state when a thread
767 * detaches
768 */
769
DllMain(HINSTANCE hinstDLL,DWORD fdwReason,LPVOID lpvReserved)770 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
771 {
772 switch (fdwReason) {
773 case DLL_PROCESS_ATTACH:
774 OPENSSL_cpuid_setup();
775 # if defined(_WIN32_WINNT)
776 {
777 IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *) hinstDLL;
778 IMAGE_NT_HEADERS *nt_headers;
779
780 if (dos_header->e_magic == IMAGE_DOS_SIGNATURE) {
781 nt_headers = (IMAGE_NT_HEADERS *) ((char *)dos_header
782 + dos_header->e_lfanew);
783 if (nt_headers->Signature == IMAGE_NT_SIGNATURE &&
784 hinstDLL !=
785 (HINSTANCE) (nt_headers->OptionalHeader.ImageBase))
786 OPENSSL_NONPIC_relocated = 1;
787 }
788 }
789 # endif
790 break;
791 case DLL_THREAD_ATTACH:
792 break;
793 case DLL_THREAD_DETACH:
794 break;
795 case DLL_PROCESS_DETACH:
796 break;
797 }
798 return (TRUE);
799 }
800 #endif
801
802 #if defined(_WIN32) && !defined(__CYGWIN__)
803 # include <tchar.h>
804 # include <signal.h>
805 # ifdef __WATCOMC__
806 # if defined(_UNICODE) || defined(__UNICODE__)
807 # define _vsntprintf _vsnwprintf
808 # else
809 # define _vsntprintf _vsnprintf
810 # endif
811 # endif
812 # ifdef _MSC_VER
813 # define alloca _alloca
814 # endif
815
816 # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
OPENSSL_isservice(void)817 int OPENSSL_isservice(void)
818 {
819 HWINSTA h;
820 DWORD len;
821 WCHAR *name;
822 static union {
823 void *p;
824 int (*f) (void);
825 } _OPENSSL_isservice = {
826 NULL
827 };
828
829 if (_OPENSSL_isservice.p == NULL) {
830 HANDLE h = GetModuleHandle(NULL);
831 if (h != NULL)
832 _OPENSSL_isservice.p = GetProcAddress(h, "_OPENSSL_isservice");
833 if (_OPENSSL_isservice.p == NULL)
834 _OPENSSL_isservice.p = (void *)-1;
835 }
836
837 if (_OPENSSL_isservice.p != (void *)-1)
838 return (*_OPENSSL_isservice.f) ();
839
840 h = GetProcessWindowStation();
841 if (h == NULL)
842 return -1;
843
844 if (GetUserObjectInformationW(h, UOI_NAME, NULL, 0, &len) ||
845 GetLastError() != ERROR_INSUFFICIENT_BUFFER)
846 return -1;
847
848 if (len > 512)
849 return -1; /* paranoia */
850 len++, len &= ~1; /* paranoia */
851 name = (WCHAR *)alloca(len + sizeof(WCHAR));
852 if (!GetUserObjectInformationW(h, UOI_NAME, name, len, &len))
853 return -1;
854
855 len++, len &= ~1; /* paranoia */
856 name[len / sizeof(WCHAR)] = L'\0'; /* paranoia */
857 # if 1
858 /*
859 * This doesn't cover "interactive" services [working with real
860 * WinSta0's] nor programs started non-interactively by Task Scheduler
861 * [those are working with SAWinSta].
862 */
863 if (wcsstr(name, L"Service-0x"))
864 return 1;
865 # else
866 /* This covers all non-interactive programs such as services. */
867 if (!wcsstr(name, L"WinSta0"))
868 return 1;
869 # endif
870 else
871 return 0;
872 }
873 # else
OPENSSL_isservice(void)874 int OPENSSL_isservice(void)
875 {
876 return 0;
877 }
878 # endif
879
OPENSSL_showfatal(const char * fmta,...)880 void OPENSSL_showfatal(const char *fmta, ...)
881 {
882 va_list ap;
883 TCHAR buf[256];
884 const TCHAR *fmt;
885 # ifdef STD_ERROR_HANDLE /* what a dirty trick! */
886 HANDLE h;
887
888 if ((h = GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
889 GetFileType(h) != FILE_TYPE_UNKNOWN) {
890 /* must be console application */
891 int len;
892 DWORD out;
893
894 va_start(ap, fmta);
895 len = _vsnprintf((char *)buf, sizeof(buf), fmta, ap);
896 WriteFile(h, buf, len < 0 ? sizeof(buf) : (DWORD) len, &out, NULL);
897 va_end(ap);
898 return;
899 }
900 # endif
901
902 if (sizeof(TCHAR) == sizeof(char))
903 fmt = (const TCHAR *)fmta;
904 else
905 do {
906 int keepgoing;
907 size_t len_0 = strlen(fmta) + 1, i;
908 WCHAR *fmtw;
909
910 fmtw = (WCHAR *)alloca(len_0 * sizeof(WCHAR));
911 if (fmtw == NULL) {
912 fmt = (const TCHAR *)L"no stack?";
913 break;
914 }
915 # ifndef OPENSSL_NO_MULTIBYTE
916 if (!MultiByteToWideChar(CP_ACP, 0, fmta, len_0, fmtw, len_0))
917 # endif
918 for (i = 0; i < len_0; i++)
919 fmtw[i] = (WCHAR)fmta[i];
920
921 for (i = 0; i < len_0; i++) {
922 if (fmtw[i] == L'%')
923 do {
924 keepgoing = 0;
925 switch (fmtw[i + 1]) {
926 case L'0':
927 case L'1':
928 case L'2':
929 case L'3':
930 case L'4':
931 case L'5':
932 case L'6':
933 case L'7':
934 case L'8':
935 case L'9':
936 case L'.':
937 case L'*':
938 case L'-':
939 i++;
940 keepgoing = 1;
941 break;
942 case L's':
943 fmtw[i + 1] = L'S';
944 break;
945 case L'S':
946 fmtw[i + 1] = L's';
947 break;
948 case L'c':
949 fmtw[i + 1] = L'C';
950 break;
951 case L'C':
952 fmtw[i + 1] = L'c';
953 break;
954 }
955 } while (keepgoing);
956 }
957 fmt = (const TCHAR *)fmtw;
958 } while (0);
959
960 va_start(ap, fmta);
961 _vsntprintf(buf, sizeof(buf) / sizeof(TCHAR) - 1, fmt, ap);
962 buf[sizeof(buf) / sizeof(TCHAR) - 1] = _T('\0');
963 va_end(ap);
964
965 # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
966 /* this -------------v--- guards NT-specific calls */
967 if (check_winnt() && OPENSSL_isservice() > 0) {
968 HANDLE hEventLog = RegisterEventSource(NULL, _T("OpenSSL"));
969
970 if (hEventLog != NULL) {
971 const TCHAR *pmsg = buf;
972
973 if (!ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, 0, 0, NULL,
974 1, 0, &pmsg, NULL)) {
975 #if defined(DEBUG)
976 /*
977 * We are in a situation where we tried to report a critical
978 * error and this failed for some reason. As a last resort,
979 * in debug builds, send output to the debugger or any other
980 * tool like DebugView which can monitor the output.
981 */
982 OutputDebugString(pmsg);
983 #endif
984 }
985
986 (void)DeregisterEventSource(hEventLog);
987 }
988 } else
989 # endif
990 MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONERROR);
991 }
992 #else
OPENSSL_showfatal(const char * fmta,...)993 void OPENSSL_showfatal(const char *fmta, ...)
994 {
995 va_list ap;
996
997 va_start(ap, fmta);
998 vfprintf(stderr, fmta, ap);
999 va_end(ap);
1000 }
1001
OPENSSL_isservice(void)1002 int OPENSSL_isservice(void)
1003 {
1004 return 0;
1005 }
1006 #endif
1007
OpenSSLDie(const char * file,int line,const char * assertion)1008 void OpenSSLDie(const char *file, int line, const char *assertion)
1009 {
1010 OPENSSL_showfatal
1011 ("%s(%d): OpenSSL internal error, assertion failed: %s\n", file, line,
1012 assertion);
1013 #if !defined(_WIN32) || defined(__CYGWIN__)
1014 abort();
1015 #else
1016 /*
1017 * Win32 abort() customarily shows a dialog, but we just did that...
1018 */
1019 # if !defined(_WIN32_WCE)
1020 raise(SIGABRT);
1021 # endif
1022 _exit(3);
1023 #endif
1024 }
1025
OPENSSL_stderr(void)1026 void *OPENSSL_stderr(void)
1027 {
1028 return stderr;
1029 }
1030
CRYPTO_memcmp(const volatile void * in_a,const volatile void * in_b,size_t len)1031 int CRYPTO_memcmp(const volatile void *in_a, const volatile void *in_b, size_t len)
1032 {
1033 size_t i;
1034 const volatile unsigned char *a = in_a;
1035 const volatile unsigned char *b = in_b;
1036 unsigned char x = 0;
1037
1038 for (i = 0; i < len; i++)
1039 x |= a[i] ^ b[i];
1040
1041 return x;
1042 }
1043