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authordjm <>2010-10-01 22:59:01 +0000
committerdjm <>2010-10-01 22:59:01 +0000
commitfe047d8b632246cb2db3234a0a4f32e5c318857b (patch)
tree939b752540947d33507b3acc48d76a8bfb7c3dc3 /src/lib/libcrypto/dyn_lck.c
parent2ea67f4aa254b09ded62e6e14fc893bbe6381579 (diff)
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resolve conflicts, fix local changes
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diff --git a/src/lib/libcrypto/dyn_lck.c b/src/lib/libcrypto/dyn_lck.c
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1/* crypto/cryptlib.c */
2/* ====================================================================
3 * Copyright (c) 1998-2003 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)
121static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
122#endif
123
124DECLARE_STACK_OF(CRYPTO_dynlock)
125IMPLEMENT_STACK_OF(CRYPTO_dynlock)
126
127/* real #defines in crypto.h, keep these upto date */
128static const char* const lock_names[CRYPTO_NUM_LOCKS] =
129 {
130 "<<ERROR>>",
131 "err",
132 "ex_data",
133 "x509",
134 "x509_info",
135 "x509_pkey",
136 "x509_crl",
137 "x509_req",
138 "dsa",
139 "rsa",
140 "evp_pkey",
141 "x509_store",
142 "ssl_ctx",
143 "ssl_cert",
144 "ssl_session",
145 "ssl_sess_cert",
146 "ssl",
147 "ssl_method",
148 "rand",
149 "rand2",
150 "debug_malloc",
151 "BIO",
152 "gethostbyname",
153 "getservbyname",
154 "readdir",
155 "RSA_blinding",
156 "dh",
157 "debug_malloc2",
158 "dso",
159 "dynlock",
160 "engine",
161 "ui",
162 "ecdsa",
163 "ec",
164 "ecdh",
165 "bn",
166 "ec_pre_comp",
167 "store",
168 "comp",
169#ifndef OPENSSL_FIPS
170# if CRYPTO_NUM_LOCKS != 39
171# error "Inconsistency between crypto.h and cryptlib.c"
172# endif
173#else
174 "fips",
175 "fips2",
176# if CRYPTO_NUM_LOCKS != 41
177# error "Inconsistency between crypto.h and cryptlib.c"
178# endif
179#endif
180 };
181
182/* This is for applications to allocate new type names in the non-dynamic
183 array of lock names. These are numbered with positive numbers. */
184static STACK *app_locks=NULL;
185
186/* For applications that want a more dynamic way of handling threads, the
187 following stack is used. These are externally numbered with negative
188 numbers. */
189static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL;
190
191
192static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
193 (const char *file,int line)=NULL;
194static void (MS_FAR *dynlock_lock_callback)(int mode,
195 struct CRYPTO_dynlock_value *l, const char *file,int line)=NULL;
196static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
197 const char *file,int line)=NULL;
198
199int CRYPTO_get_new_lockid(char *name)
200 {
201 char *str;
202 int i;
203
204#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
205 /* A hack to make Visual C++ 5.0 work correctly when linking as
206 * a DLL using /MT. Without this, the application cannot use
207 * and floating point printf's.
208 * It also seems to be needed for Visual C 1.5 (win16) */
209 SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
210#endif
211
212 if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
213 {
214 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
215 return(0);
216 }
217 if ((str=BUF_strdup(name)) == NULL)
218 {
219 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
220 return(0);
221 }
222 i=sk_push(app_locks,str);
223 if (!i)
224 OPENSSL_free(str);
225 else
226 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
227 return(i);
228 }
229
230int CRYPTO_get_new_dynlockid(void)
231 {
232 int i = 0;
233 CRYPTO_dynlock *pointer = NULL;
234
235 if (dynlock_create_callback == NULL)
236 {
237 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
238 return(0);
239 }
240 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
241 if ((dyn_locks == NULL)
242 && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
243 {
244 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
245 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
246 return(0);
247 }
248 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
249
250 pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
251 if (pointer == NULL)
252 {
253 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
254 return(0);
255 }
256 pointer->references = 1;
257 pointer->data = dynlock_create_callback(__FILE__,__LINE__);
258 if (pointer->data == NULL)
259 {
260 OPENSSL_free(pointer);
261 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
262 return(0);
263 }
264
265 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
266 /* First, try to find an existing empty slot */
267 i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
268 /* If there was none, push, thereby creating a new one */
269 if (i == -1)
270 /* Since sk_push() returns the number of items on the
271 stack, not the location of the pushed item, we need
272 to transform the returned number into a position,
273 by decreasing it. */
274 i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1;
275 else
276 /* If we found a place with a NULL pointer, put our pointer
277 in it. */
278 (void)sk_CRYPTO_dynlock_set(dyn_locks,i,pointer);
279 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
280
281 if (i == -1)
282 {
283 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
284 OPENSSL_free(pointer);
285 }
286 else
287 i += 1; /* to avoid 0 */
288 return -i;
289 }
290
291void CRYPTO_destroy_dynlockid(int i)
292 {
293 CRYPTO_dynlock *pointer = NULL;
294 if (i)
295 i = -i-1;
296 if (dynlock_destroy_callback == NULL)
297 return;
298
299 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
300
301 if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
302 {
303 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
304 return;
305 }
306 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
307 if (pointer != NULL)
308 {
309 --pointer->references;
310#ifdef REF_CHECK
311 if (pointer->references < 0)
312 {
313 fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
314 abort();
315 }
316 else
317#endif
318 if (pointer->references <= 0)
319 {
320 (void)sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
321 }
322 else
323 pointer = NULL;
324 }
325 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
326
327 if (pointer)
328 {
329 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
330 OPENSSL_free(pointer);
331 }
332 }
333
334struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
335 {
336 CRYPTO_dynlock *pointer = NULL;
337 if (i)
338 i = -i-1;
339
340 CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
341
342 if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
343 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
344 if (pointer)
345 pointer->references++;
346
347 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
348
349 if (pointer)
350 return pointer->data;
351 return NULL;
352 }
353
354struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
355 (const char *file,int line)
356 {
357 return(dynlock_create_callback);
358 }
359
360void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
361 struct CRYPTO_dynlock_value *l, const char *file,int line)
362 {
363 return(dynlock_lock_callback);
364 }
365
366void (*CRYPTO_get_dynlock_destroy_callback(void))
367 (struct CRYPTO_dynlock_value *l, const char *file,int line)
368 {
369 return(dynlock_destroy_callback);
370 }
371
372void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
373 (const char *file, int line))
374 {
375 dynlock_create_callback=func;
376 }
377
378static void do_dynlock(int mode, int type, const char *file, int line)
379 {
380 if (dynlock_lock_callback != NULL)
381 {
382 struct CRYPTO_dynlock_value *pointer
383 = CRYPTO_get_dynlock_value(type);
384
385 OPENSSL_assert(pointer != NULL);
386
387 dynlock_lock_callback(mode, pointer, file, line);
388
389 CRYPTO_destroy_dynlockid(type);
390 }
391 }
392
393void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
394 struct CRYPTO_dynlock_value *l, const char *file, int line))
395 {
396 /* Set callback so CRYPTO_lock() can now handle dynamic locks.
397 * This is OK because at this point and application shouldn't be using
398 * OpenSSL from multiple threads because it is setting up the locking
399 * callbacks.
400 */
401 static int done = 0;
402 if (!done)
403 {
404 int_CRYPTO_set_do_dynlock_callback(do_dynlock);
405 done = 1;
406 }
407
408 dynlock_lock_callback=func;
409 }
410
411void CRYPTO_set_dynlock_destroy_callback(void (*func)
412 (struct CRYPTO_dynlock_value *l, const char *file, int line))
413 {
414 dynlock_destroy_callback=func;
415 }
416
417const char *CRYPTO_get_lock_name(int type)
418 {
419 if (type < 0)
420 return("dynamic");
421 else if (type < CRYPTO_NUM_LOCKS)
422 return(lock_names[type]);
423 else if (type-CRYPTO_NUM_LOCKS > sk_num(app_locks))
424 return("ERROR");
425 else
426 return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
427 }
428
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