OLD | NEW |
| (Empty) |
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) | |
121 static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */ | |
122 #endif | |
123 | |
124 DECLARE_STACK_OF(CRYPTO_dynlock) | |
125 IMPLEMENT_STACK_OF(CRYPTO_dynlock) | |
126 | |
127 /* real #defines in crypto.h, keep these upto date */ | |
128 static 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. */ | |
184 static 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. */ | |
189 static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL; | |
190 | |
191 | |
192 static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback) | |
193 (const char *file,int line)=NULL; | |
194 static void (MS_FAR *dynlock_lock_callback)(int mode, | |
195 struct CRYPTO_dynlock_value *l, const char *file,int line)=NULL; | |
196 static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l, | |
197 const char *file,int line)=NULL; | |
198 | |
199 int 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 | |
230 int 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 | |
291 void 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 | |
334 struct 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 | |
354 struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void)) | |
355 (const char *file,int line) | |
356 { | |
357 return(dynlock_create_callback); | |
358 } | |
359 | |
360 void (*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 | |
366 void (*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 | |
372 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func) | |
373 (const char *file, int line)) | |
374 { | |
375 dynlock_create_callback=func; | |
376 } | |
377 | |
378 static 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 | |
393 void 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 | |
411 void 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 | |
417 const 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 | |
OLD | NEW |