1 /* ====================================================================
2 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
16 * 3. All advertising materials mentioning features or use of this
17 * software must display the following acknowledgment:
18 * "This product includes software developed by the OpenSSL Project
19 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
22 * endorse or promote products derived from this software without
23 * prior written permission. For written permission, please contact
24 * openssl-core@openssl.org.
26 * 5. Products derived from this software may not be called "OpenSSL"
27 * nor may "OpenSSL" appear in their names without prior written
28 * permission of the OpenSSL Project.
30 * 6. Redistributions of any form whatsoever must retain the following
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
46 * OF THE POSSIBILITY OF SUCH DAMAGE.
47 * ====================================================================
49 * This product includes cryptographic software written by Eric Young
50 * (eay@cryptsoft.com). This product includes software written by Tim
51 * Hudson (tjh@cryptsoft.com).
54 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
55 * All rights reserved.
57 * This package is an SSL implementation written
58 * by Eric Young (eay@cryptsoft.com).
59 * The implementation was written so as to conform with Netscapes SSL.
61 * This library is free for commercial and non-commercial use as long as
62 * the following conditions are aheared to. The following conditions
63 * apply to all code found in this distribution, be it the RC4, RSA,
64 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
65 * included with this distribution is covered by the same copyright terms
66 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
68 * Copyright remains Eric Young's, and as such any Copyright notices in
69 * the code are not to be removed.
70 * If this package is used in a product, Eric Young should be given attribution
71 * as the author of the parts of the library used.
72 * This can be in the form of a textual message at program startup or
73 * in documentation (online or textual) provided with the package.
75 * Redistribution and use in source and binary forms, with or without
76 * modification, are permitted provided that the following conditions
78 * 1. Redistributions of source code must retain the copyright
79 * notice, this list of conditions and the following disclaimer.
80 * 2. Redistributions in binary form must reproduce the above copyright
81 * notice, this list of conditions and the following disclaimer in the
82 * documentation and/or other materials provided with the distribution.
83 * 3. All advertising materials mentioning features or use of this software
84 * must display the following acknowledgement:
85 * "This product includes cryptographic software written by
86 * Eric Young (eay@cryptsoft.com)"
87 * The word 'cryptographic' can be left out if the rouines from the library
88 * being used are not cryptographic related :-).
89 * 4. If you include any Windows specific code (or a derivative thereof) from
90 * the apps directory (application code) you must include an acknowledgement:
91 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
93 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
94 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
95 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
96 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
97 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
98 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
99 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
101 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
102 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
105 * The licence and distribution terms for any publically available version or
106 * derivative of this code cannot be changed. i.e. this code cannot simply be
107 * copied and put under another distribution licence
108 * [including the GNU Public Licence.]
110 /* ====================================================================
111 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
112 * ECDH support in OpenSSL originally developed by
113 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
116 #include "internal/cryptlib.h"
117 #include <openssl/safestack.h>
119 #if defined(OPENSSL_SYS_WIN32)
120 static double OpenSSL_MSVC5_hack = 0.0; /* and for VC1.5 */
123 /* real #defines in crypto.h, keep these upto date */
124 static const char *const lock_names[CRYPTO_NUM_LOCKS] = {
166 #if CRYPTO_NUM_LOCKS != 41
167 # error "Inconsistency between crypto.h and cryptlib.c"
172 * This is for applications to allocate new type names in the non-dynamic
173 * array of lock names. These are numbered with positive numbers.
175 static STACK_OF(OPENSSL_STRING) *app_locks = NULL;
178 * For applications that want a more dynamic way of handling threads, the
179 * following stack is used. These are externally numbered with negative
182 static STACK_OF(CRYPTO_dynlock) *dyn_locks = NULL;
184 static void (*locking_callback) (int mode, int type,
185 const char *file, int line) = 0;
186 static int (*add_lock_callback) (int *pointer, int amount,
187 int type, const char *file, int line) = 0;
188 static struct CRYPTO_dynlock_value *(*dynlock_create_callback)
189 (const char *file, int line) = 0;
190 static void (*dynlock_lock_callback) (int mode,
191 struct CRYPTO_dynlock_value *l,
192 const char *file, int line) = 0;
193 static void (*dynlock_destroy_callback) (struct CRYPTO_dynlock_value *l,
194 const char *file, int line) = 0;
196 int CRYPTO_get_new_lockid(char *name)
201 #if defined(OPENSSL_SYS_WIN32)
203 * A hack to make Visual C++ 5.0 work correctly when linking as a DLL
204 * using /MT. Without this, the application cannot use any floating point
205 * printf's. It also seems to be needed for Visual C 1.5 (win16)
207 OpenSSL_MSVC5_hack = (double)name[0] * (double)name[1];
210 if ((app_locks == NULL)
211 && ((app_locks = sk_OPENSSL_STRING_new_null()) == NULL)) {
212 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID, ERR_R_MALLOC_FAILURE);
215 if ((str = OPENSSL_strdup(name)) == NULL) {
216 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID, ERR_R_MALLOC_FAILURE);
219 i = sk_OPENSSL_STRING_push(app_locks, str);
223 i += CRYPTO_NUM_LOCKS; /* gap of one :-) */
227 int CRYPTO_num_locks(void)
229 return CRYPTO_NUM_LOCKS;
232 int CRYPTO_get_new_dynlockid(void)
235 CRYPTO_dynlock *pointer = NULL;
237 if (dynlock_create_callback == NULL) {
238 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,
239 CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
242 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
243 if ((dyn_locks == NULL)
244 && ((dyn_locks = sk_CRYPTO_dynlock_new_null()) == NULL)) {
245 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
246 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID, ERR_R_MALLOC_FAILURE);
249 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
251 pointer = OPENSSL_zalloc(sizeof(*pointer));
252 if (pointer == NULL) {
253 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID, ERR_R_MALLOC_FAILURE);
256 pointer->references = 1;
257 pointer->data = dynlock_create_callback(OPENSSL_FILE, OPENSSL_LINE);
258 if (pointer->data == NULL) {
259 OPENSSL_free(pointer);
260 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID, ERR_R_MALLOC_FAILURE);
264 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
265 /* First, try to find an existing empty slot */
266 i = sk_CRYPTO_dynlock_find(dyn_locks, NULL);
267 /* If there was none, push, thereby creating a new one */
270 * Since sk_push() returns the number of items on the stack, not the
271 * location of the pushed item, we need to transform the returned
272 * number into a position, by decreasing it.
274 i = sk_CRYPTO_dynlock_push(dyn_locks, pointer) - 1;
277 * If we found a place with a NULL pointer, put our pointer in it.
279 (void)sk_CRYPTO_dynlock_set(dyn_locks, i, pointer);
280 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
283 dynlock_destroy_callback(pointer->data, OPENSSL_FILE, OPENSSL_LINE);
284 OPENSSL_free(pointer);
286 i += 1; /* to avoid 0 */
290 void CRYPTO_destroy_dynlockid(int i)
292 CRYPTO_dynlock *pointer = NULL;
295 if (dynlock_destroy_callback == NULL)
298 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
300 if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks)) {
301 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
304 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
305 if (pointer != NULL) {
306 --pointer->references;
308 if (pointer->references < 0) {
309 OPENSSL_showfatal("CRYPTO_destroy_dynlockid, bad reference count\n");
313 if (pointer->references <= 0) {
314 (void)sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
318 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
321 dynlock_destroy_callback(pointer->data, OPENSSL_FILE, OPENSSL_LINE);
322 OPENSSL_free(pointer);
326 struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
328 CRYPTO_dynlock *pointer = NULL;
332 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
334 if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
335 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
337 pointer->references++;
339 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
342 return pointer->data;
346 struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
347 (const char *file, int line) {
348 return (dynlock_create_callback);
351 void (*CRYPTO_get_dynlock_lock_callback(void)) (int mode,
352 struct CRYPTO_dynlock_value
353 *l, const char *file,
355 return (dynlock_lock_callback);
358 void (*CRYPTO_get_dynlock_destroy_callback(void))
359 (struct CRYPTO_dynlock_value *l, const char *file, int line) {
360 return (dynlock_destroy_callback);
363 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
364 (const char *file, int line))
366 dynlock_create_callback = func;
369 void CRYPTO_set_dynlock_lock_callback(void (*func) (int mode,
371 CRYPTO_dynlock_value *l,
376 FIPS_set_locking_callbacks(CRYPTO_lock, CRYPTO_add_lock);
378 dynlock_lock_callback = func;
381 void CRYPTO_set_dynlock_destroy_callback(void (*func)
382 (struct CRYPTO_dynlock_value *l,
383 const char *file, int line))
385 dynlock_destroy_callback = func;
388 void (*CRYPTO_get_locking_callback(void)) (int mode, int type,
389 const char *file, int line) {
390 return (locking_callback);
393 int (*CRYPTO_get_add_lock_callback(void)) (int *num, int mount, int type,
394 const char *file, int line) {
395 return (add_lock_callback);
398 void CRYPTO_set_locking_callback(void (*func) (int mode, int type,
399 const char *file, int line))
402 FIPS_set_locking_callbacks(CRYPTO_lock, CRYPTO_add_lock);
404 locking_callback = func;
407 void CRYPTO_set_add_lock_callback(int (*func) (int *num, int mount, int type,
408 const char *file, int line))
410 add_lock_callback = func;
413 void CRYPTO_lock(int mode, int type, const char *file, int line)
418 char *rw_text, *operation_text;
420 if (mode & CRYPTO_LOCK)
421 operation_text = "lock ";
422 else if (mode & CRYPTO_UNLOCK)
423 operation_text = "unlock";
425 operation_text = "ERROR ";
427 if (mode & CRYPTO_READ)
429 else if (mode & CRYPTO_WRITE)
434 CRYPTO_THREADID_current(&id);
435 fprintf(stderr, "lock:%08lx:(%s)%s %-18s %s:%d\n",
436 CRYPTO_THREADID_hash(&id), rw_text, operation_text,
437 CRYPTO_get_lock_name(type), file, line);
441 if (dynlock_lock_callback != NULL) {
442 struct CRYPTO_dynlock_value *pointer
443 = CRYPTO_get_dynlock_value(type);
445 OPENSSL_assert(pointer != NULL);
447 dynlock_lock_callback(mode, pointer, file, line);
449 CRYPTO_destroy_dynlockid(type);
451 } else if (locking_callback != NULL)
452 locking_callback(mode, type, file, line);
455 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
460 if (add_lock_callback != NULL) {
462 int before = *pointer;
465 ret = add_lock_callback(pointer, amount, type, file, line);
469 CRYPTO_THREADID_current(&id);
470 fprintf(stderr, "ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
471 CRYPTO_THREADID_hash(&id), before, amount, ret,
472 CRYPTO_get_lock_name(type), file, line);
476 CRYPTO_lock(CRYPTO_LOCK | CRYPTO_WRITE, type, file, line);
478 ret = *pointer + amount;
482 CRYPTO_THREADID_current(&id);
483 fprintf(stderr, "ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
484 CRYPTO_THREADID_hash(&id),
485 *pointer, amount, ret,
486 CRYPTO_get_lock_name(type), file, line);
490 CRYPTO_lock(CRYPTO_UNLOCK | CRYPTO_WRITE, type, file, line);
495 const char *CRYPTO_get_lock_name(int type)
499 else if (type < CRYPTO_NUM_LOCKS)
500 return (lock_names[type]);
501 else if (type - CRYPTO_NUM_LOCKS > sk_OPENSSL_STRING_num(app_locks))
504 return (sk_OPENSSL_STRING_value(app_locks, type - CRYPTO_NUM_LOCKS));