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1 /* crypto/err/err_def.c */ | |
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
3 * All rights reserved. | |
4 * | |
5 * This package is an SSL implementation written | |
6 * by Eric Young (eay@cryptsoft.com). | |
7 * The implementation was written so as to conform with Netscapes SSL. | |
8 * | |
9 * This library is free for commercial and non-commercial use as long as | |
10 * the following conditions are aheared to. The following conditions | |
11 * apply to all code found in this distribution, be it the RC4, RSA, | |
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 * included with this distribution is covered by the same copyright terms | |
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 * | |
16 * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 * the code are not to be removed. | |
18 * If this package is used in a product, Eric Young should be given attribution | |
19 * as the author of the parts of the library used. | |
20 * This can be in the form of a textual message at program startup or | |
21 * in documentation (online or textual) provided with the package. | |
22 * | |
23 * Redistribution and use in source and binary forms, with or without | |
24 * modification, are permitted provided that the following conditions | |
25 * are met: | |
26 * 1. Redistributions of source code must retain the copyright | |
27 * notice, this list of conditions and the following disclaimer. | |
28 * 2. Redistributions in binary form must reproduce the above copyright | |
29 * notice, this list of conditions and the following disclaimer in the | |
30 * documentation and/or other materials provided with the distribution. | |
31 * 3. All advertising materials mentioning features or use of this software | |
32 * must display the following acknowledgement: | |
33 * "This product includes cryptographic software written by | |
34 * Eric Young (eay@cryptsoft.com)" | |
35 * The word 'cryptographic' can be left out if the rouines from the library | |
36 * being used are not cryptographic related :-). | |
37 * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 * the apps directory (application code) you must include an acknowledgement: | |
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 * | |
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 * SUCH DAMAGE. | |
52 * | |
53 * The licence and distribution terms for any publically available version or | |
54 * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 * copied and put under another distribution licence | |
56 * [including the GNU Public Licence.] | |
57 */ | |
58 /* ==================================================================== | |
59 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. | |
60 * | |
61 * Redistribution and use in source and binary forms, with or without | |
62 * modification, are permitted provided that the following conditions | |
63 * are met: | |
64 * | |
65 * 1. Redistributions of source code must retain the above copyright | |
66 * notice, this list of conditions and the following disclaimer. | |
67 * | |
68 * 2. Redistributions in binary form must reproduce the above copyright | |
69 * notice, this list of conditions and the following disclaimer in | |
70 * the documentation and/or other materials provided with the | |
71 * distribution. | |
72 * | |
73 * 3. All advertising materials mentioning features or use of this | |
74 * software must display the following acknowledgment: | |
75 * "This product includes software developed by the OpenSSL Project | |
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
77 * | |
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
79 * endorse or promote products derived from this software without | |
80 * prior written permission. For written permission, please contact | |
81 * openssl-core@openssl.org. | |
82 * | |
83 * 5. Products derived from this software may not be called "OpenSSL" | |
84 * nor may "OpenSSL" appear in their names without prior written | |
85 * permission of the OpenSSL Project. | |
86 * | |
87 * 6. Redistributions of any form whatsoever must retain the following | |
88 * acknowledgment: | |
89 * "This product includes software developed by the OpenSSL Project | |
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
91 * | |
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
103 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
104 * ==================================================================== | |
105 * | |
106 * This product includes cryptographic software written by Eric Young | |
107 * (eay@cryptsoft.com). This product includes software written by Tim | |
108 * Hudson (tjh@cryptsoft.com). | |
109 * | |
110 */ | |
111 | |
112 #include <stdio.h> | |
113 #include <stdarg.h> | |
114 #include <string.h> | |
115 #include "cryptlib.h" | |
116 #include <openssl/lhash.h> | |
117 #include <openssl/crypto.h> | |
118 #include <openssl/buffer.h> | |
119 #include <openssl/bio.h> | |
120 #include <openssl/err.h> | |
121 | |
122 #define err_clear_data(p,i) \ | |
123 do { \ | |
124 if (((p)->err_data[i] != NULL) && \ | |
125 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ | |
126 { \ | |
127 OPENSSL_free((p)->err_data[i]); \ | |
128 (p)->err_data[i]=NULL; \ | |
129 } \ | |
130 (p)->err_data_flags[i]=0; \ | |
131 } while(0) | |
132 | |
133 #define err_clear(p,i) \ | |
134 do { \ | |
135 (p)->err_flags[i]=0; \ | |
136 (p)->err_buffer[i]=0; \ | |
137 err_clear_data(p,i); \ | |
138 (p)->err_file[i]=NULL; \ | |
139 (p)->err_line[i]= -1; \ | |
140 } while(0) | |
141 | |
142 static void err_load_strings(int lib, ERR_STRING_DATA *str); | |
143 | |
144 static void ERR_STATE_free(ERR_STATE *s); | |
145 | |
146 /* Define the predeclared (but externally opaque) "ERR_FNS" type */ | |
147 struct st_ERR_FNS | |
148 { | |
149 /* Works on the "error_hash" string table */ | |
150 LHASH *(*cb_err_get)(int create); | |
151 void (*cb_err_del)(void); | |
152 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); | |
153 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); | |
154 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); | |
155 /* Works on the "thread_hash" error-state table */ | |
156 LHASH *(*cb_thread_get)(int create); | |
157 void (*cb_thread_release)(LHASH **hash); | |
158 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); | |
159 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); | |
160 void (*cb_thread_del_item)(const ERR_STATE *); | |
161 /* Returns the next available error "library" numbers */ | |
162 int (*cb_get_next_lib)(void); | |
163 }; | |
164 | |
165 /* Predeclarations of the "err_defaults" functions */ | |
166 static LHASH *int_err_get(int create); | |
167 static void int_err_del(void); | |
168 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); | |
169 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); | |
170 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); | |
171 static LHASH *int_thread_get(int create); | |
172 static void int_thread_release(LHASH **hash); | |
173 static ERR_STATE *int_thread_get_item(const ERR_STATE *); | |
174 static ERR_STATE *int_thread_set_item(ERR_STATE *); | |
175 static void int_thread_del_item(const ERR_STATE *); | |
176 static int int_err_get_next_lib(void); | |
177 /* The static ERR_FNS table using these defaults functions */ | |
178 static const ERR_FNS err_defaults = | |
179 { | |
180 int_err_get, | |
181 int_err_del, | |
182 int_err_get_item, | |
183 int_err_set_item, | |
184 int_err_del_item, | |
185 int_thread_get, | |
186 int_thread_release, | |
187 int_thread_get_item, | |
188 int_thread_set_item, | |
189 int_thread_del_item, | |
190 int_err_get_next_lib | |
191 }; | |
192 | |
193 /* The replacable table of ERR_FNS functions we use at run-time */ | |
194 static const ERR_FNS *err_fns = NULL; | |
195 | |
196 /* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ | |
197 #define ERRFN(a) err_fns->cb_##a | |
198 | |
199 /* The internal state used by "err_defaults" - as such, the setting, reading, | |
200 * creating, and deleting of this data should only be permitted via the | |
201 * "err_defaults" functions. This way, a linked module can completely defer all | |
202 * ERR state operation (together with requisite locking) to the implementations | |
203 * and state in the loading application. */ | |
204 static LHASH *int_error_hash = NULL; | |
205 static LHASH *int_thread_hash = NULL; | |
206 static int int_thread_hash_references = 0; | |
207 static int int_err_library_number= ERR_LIB_USER; | |
208 | |
209 /* Internal function that checks whether "err_fns" is set and if not, sets it to | |
210 * the defaults. */ | |
211 static void err_fns_check(void) | |
212 { | |
213 if (err_fns) return; | |
214 | |
215 CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
216 if (!err_fns) | |
217 err_fns = &err_defaults; | |
218 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
219 } | |
220 | |
221 /* API functions to get or set the underlying ERR functions. */ | |
222 | |
223 const ERR_FNS *ERR_get_implementation(void) | |
224 { | |
225 err_fns_check(); | |
226 return err_fns; | |
227 } | |
228 | |
229 int ERR_set_implementation(const ERR_FNS *fns) | |
230 { | |
231 int ret = 0; | |
232 | |
233 CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
234 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting | |
235 * an error is there?! */ | |
236 if (!err_fns) | |
237 { | |
238 err_fns = fns; | |
239 ret = 1; | |
240 } | |
241 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
242 return ret; | |
243 } | |
244 | |
245 /* These are the callbacks provided to "lh_new()" when creating the LHASH tables | |
246 * internal to the "err_defaults" implementation. */ | |
247 | |
248 /* static unsigned long err_hash(ERR_STRING_DATA *a); */ | |
249 static unsigned long err_hash(const void *a_void); | |
250 /* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */ | |
251 static int err_cmp(const void *a_void, const void *b_void); | |
252 /* static unsigned long pid_hash(ERR_STATE *pid); */ | |
253 static unsigned long pid_hash(const void *pid_void); | |
254 /* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */ | |
255 static int pid_cmp(const void *a_void,const void *pid_void); | |
256 | |
257 /* The internal functions used in the "err_defaults" implementation */ | |
258 | |
259 static LHASH *int_err_get(int create) | |
260 { | |
261 LHASH *ret = NULL; | |
262 | |
263 CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
264 if (!int_error_hash && create) | |
265 { | |
266 CRYPTO_push_info("int_err_get (err.c)"); | |
267 int_error_hash = lh_new(err_hash, err_cmp); | |
268 CRYPTO_pop_info(); | |
269 } | |
270 if (int_error_hash) | |
271 ret = int_error_hash; | |
272 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
273 | |
274 return ret; | |
275 } | |
276 | |
277 static void int_err_del(void) | |
278 { | |
279 CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
280 if (int_error_hash) | |
281 { | |
282 lh_free(int_error_hash); | |
283 int_error_hash = NULL; | |
284 } | |
285 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
286 } | |
287 | |
288 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) | |
289 { | |
290 ERR_STRING_DATA *p; | |
291 LHASH *hash; | |
292 | |
293 err_fns_check(); | |
294 hash = ERRFN(err_get)(0); | |
295 if (!hash) | |
296 return NULL; | |
297 | |
298 CRYPTO_r_lock(CRYPTO_LOCK_ERR); | |
299 p = (ERR_STRING_DATA *)lh_retrieve(hash, d); | |
300 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); | |
301 | |
302 return p; | |
303 } | |
304 | |
305 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) | |
306 { | |
307 ERR_STRING_DATA *p; | |
308 LHASH *hash; | |
309 | |
310 err_fns_check(); | |
311 hash = ERRFN(err_get)(1); | |
312 if (!hash) | |
313 return NULL; | |
314 | |
315 CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
316 p = (ERR_STRING_DATA *)lh_insert(hash, d); | |
317 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
318 | |
319 return p; | |
320 } | |
321 | |
322 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) | |
323 { | |
324 ERR_STRING_DATA *p; | |
325 LHASH *hash; | |
326 | |
327 err_fns_check(); | |
328 hash = ERRFN(err_get)(0); | |
329 if (!hash) | |
330 return NULL; | |
331 | |
332 CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
333 p = (ERR_STRING_DATA *)lh_delete(hash, d); | |
334 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
335 | |
336 return p; | |
337 } | |
338 | |
339 static LHASH *int_thread_get(int create) | |
340 { | |
341 LHASH *ret = NULL; | |
342 | |
343 CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
344 if (!int_thread_hash && create) | |
345 { | |
346 CRYPTO_push_info("int_thread_get (err.c)"); | |
347 int_thread_hash = lh_new(pid_hash, pid_cmp); | |
348 CRYPTO_pop_info(); | |
349 } | |
350 if (int_thread_hash) | |
351 { | |
352 int_thread_hash_references++; | |
353 ret = int_thread_hash; | |
354 } | |
355 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
356 return ret; | |
357 } | |
358 | |
359 static void int_thread_release(LHASH **hash) | |
360 { | |
361 int i; | |
362 | |
363 if (hash == NULL || *hash == NULL) | |
364 return; | |
365 | |
366 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); | |
367 | |
368 #ifdef REF_PRINT | |
369 fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR"); | |
370 #endif | |
371 if (i > 0) return; | |
372 #ifdef REF_CHECK | |
373 if (i < 0) | |
374 { | |
375 fprintf(stderr,"int_thread_release, bad reference count\n"); | |
376 abort(); /* ok */ | |
377 } | |
378 #endif | |
379 *hash = NULL; | |
380 } | |
381 | |
382 static ERR_STATE *int_thread_get_item(const ERR_STATE *d) | |
383 { | |
384 ERR_STATE *p; | |
385 LHASH *hash; | |
386 | |
387 err_fns_check(); | |
388 hash = ERRFN(thread_get)(0); | |
389 if (!hash) | |
390 return NULL; | |
391 | |
392 CRYPTO_r_lock(CRYPTO_LOCK_ERR); | |
393 p = (ERR_STATE *)lh_retrieve(hash, d); | |
394 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); | |
395 | |
396 ERRFN(thread_release)(&hash); | |
397 return p; | |
398 } | |
399 | |
400 static ERR_STATE *int_thread_set_item(ERR_STATE *d) | |
401 { | |
402 ERR_STATE *p; | |
403 LHASH *hash; | |
404 | |
405 err_fns_check(); | |
406 hash = ERRFN(thread_get)(1); | |
407 if (!hash) | |
408 return NULL; | |
409 | |
410 CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
411 p = (ERR_STATE *)lh_insert(hash, d); | |
412 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
413 | |
414 ERRFN(thread_release)(&hash); | |
415 return p; | |
416 } | |
417 | |
418 static void int_thread_del_item(const ERR_STATE *d) | |
419 { | |
420 ERR_STATE *p; | |
421 LHASH *hash; | |
422 | |
423 err_fns_check(); | |
424 hash = ERRFN(thread_get)(0); | |
425 if (!hash) | |
426 return; | |
427 | |
428 CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
429 p = (ERR_STATE *)lh_delete(hash, d); | |
430 /* make sure we don't leak memory */ | |
431 if (int_thread_hash_references == 1 | |
432 && int_thread_hash && (lh_num_items(int_thread_hash) == 0)) | |
433 { | |
434 lh_free(int_thread_hash); | |
435 int_thread_hash = NULL; | |
436 } | |
437 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
438 | |
439 ERRFN(thread_release)(&hash); | |
440 if (p) | |
441 ERR_STATE_free(p); | |
442 } | |
443 | |
444 static int int_err_get_next_lib(void) | |
445 { | |
446 int ret; | |
447 | |
448 CRYPTO_w_lock(CRYPTO_LOCK_ERR); | |
449 ret = int_err_library_number++; | |
450 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); | |
451 | |
452 return ret; | |
453 } | |
454 | |
455 static void ERR_STATE_free(ERR_STATE *s) | |
456 { | |
457 int i; | |
458 | |
459 if (s == NULL) | |
460 return; | |
461 | |
462 for (i=0; i<ERR_NUM_ERRORS; i++) | |
463 { | |
464 err_clear_data(s,i); | |
465 } | |
466 OPENSSL_free(s); | |
467 } | |
468 | |
469 static void err_load_strings(int lib, ERR_STRING_DATA *str) | |
470 { | |
471 while (str->error) | |
472 { | |
473 if (lib) | |
474 str->error|=ERR_PACK(lib,0,0); | |
475 ERRFN(err_set_item)(str); | |
476 str++; | |
477 } | |
478 } | |
479 | |
480 void ERR_load_strings(int lib, ERR_STRING_DATA *str) | |
481 { | |
482 err_fns_check(); | |
483 err_load_strings(lib, str); | |
484 } | |
485 | |
486 void ERR_unload_strings(int lib, ERR_STRING_DATA *str) | |
487 { | |
488 while (str->error) | |
489 { | |
490 if (lib) | |
491 str->error|=ERR_PACK(lib,0,0); | |
492 ERRFN(err_del_item)(str); | |
493 str++; | |
494 } | |
495 } | |
496 | |
497 void ERR_free_strings(void) | |
498 { | |
499 err_fns_check(); | |
500 ERRFN(err_del)(); | |
501 } | |
502 | |
503 LHASH *ERR_get_string_table(void) | |
504 { | |
505 err_fns_check(); | |
506 return ERRFN(err_get)(0); | |
507 } | |
508 | |
509 LHASH *ERR_get_err_state_table(void) | |
510 { | |
511 err_fns_check(); | |
512 return ERRFN(thread_get)(0); | |
513 } | |
514 | |
515 void ERR_release_err_state_table(LHASH **hash) | |
516 { | |
517 err_fns_check(); | |
518 ERRFN(thread_release)(hash); | |
519 } | |
520 | |
521 const char *ERR_lib_error_string(unsigned long e) | |
522 { | |
523 ERR_STRING_DATA d,*p; | |
524 unsigned long l; | |
525 | |
526 err_fns_check(); | |
527 l=ERR_GET_LIB(e); | |
528 d.error=ERR_PACK(l,0,0); | |
529 p=ERRFN(err_get_item)(&d); | |
530 return((p == NULL)?NULL:p->string); | |
531 } | |
532 | |
533 const char *ERR_func_error_string(unsigned long e) | |
534 { | |
535 ERR_STRING_DATA d,*p; | |
536 unsigned long l,f; | |
537 | |
538 err_fns_check(); | |
539 l=ERR_GET_LIB(e); | |
540 f=ERR_GET_FUNC(e); | |
541 d.error=ERR_PACK(l,f,0); | |
542 p=ERRFN(err_get_item)(&d); | |
543 return((p == NULL)?NULL:p->string); | |
544 } | |
545 | |
546 const char *ERR_reason_error_string(unsigned long e) | |
547 { | |
548 ERR_STRING_DATA d,*p=NULL; | |
549 unsigned long l,r; | |
550 | |
551 err_fns_check(); | |
552 l=ERR_GET_LIB(e); | |
553 r=ERR_GET_REASON(e); | |
554 d.error=ERR_PACK(l,0,r); | |
555 p=ERRFN(err_get_item)(&d); | |
556 if (!p) | |
557 { | |
558 d.error=ERR_PACK(0,0,r); | |
559 p=ERRFN(err_get_item)(&d); | |
560 } | |
561 return((p == NULL)?NULL:p->string); | |
562 } | |
563 | |
564 /* static unsigned long err_hash(ERR_STRING_DATA *a) */ | |
565 static unsigned long err_hash(const void *a_void) | |
566 { | |
567 unsigned long ret,l; | |
568 | |
569 l=((const ERR_STRING_DATA *)a_void)->error; | |
570 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); | |
571 return(ret^ret%19*13); | |
572 } | |
573 | |
574 /* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */ | |
575 static int err_cmp(const void *a_void, const void *b_void) | |
576 { | |
577 return((int)(((const ERR_STRING_DATA *)a_void)->error - | |
578 ((const ERR_STRING_DATA *)b_void)->error)); | |
579 } | |
580 | |
581 /* static unsigned long pid_hash(ERR_STATE *a) */ | |
582 static unsigned long pid_hash(const void *a_void) | |
583 { | |
584 return(((const ERR_STATE *)a_void)->pid*13); | |
585 } | |
586 | |
587 /* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */ | |
588 static int pid_cmp(const void *a_void, const void *b_void) | |
589 { | |
590 return((int)((long)((const ERR_STATE *)a_void)->pid - | |
591 (long)((const ERR_STATE *)b_void)->pid)); | |
592 } | |
593 #ifdef OPENSSL_FIPS | |
594 static void int_err_remove_state(unsigned long pid) | |
595 #else | |
596 void ERR_remove_state(unsigned long pid) | |
597 #endif | |
598 { | |
599 ERR_STATE tmp; | |
600 | |
601 err_fns_check(); | |
602 if (pid == 0) | |
603 pid=(unsigned long)CRYPTO_thread_id(); | |
604 tmp.pid=pid; | |
605 /* thread_del_item automatically destroys the LHASH if the number of | |
606 * items reaches zero. */ | |
607 ERRFN(thread_del_item)(&tmp); | |
608 } | |
609 | |
610 #ifdef OPENSSL_FIPS | |
611 static ERR_STATE *int_err_get_state(void) | |
612 #else | |
613 ERR_STATE *ERR_get_state(void) | |
614 #endif | |
615 { | |
616 static ERR_STATE fallback; | |
617 ERR_STATE *ret,tmp,*tmpp=NULL; | |
618 int i; | |
619 unsigned long pid; | |
620 | |
621 err_fns_check(); | |
622 pid=(unsigned long)CRYPTO_thread_id(); | |
623 tmp.pid=pid; | |
624 ret=ERRFN(thread_get_item)(&tmp); | |
625 | |
626 /* ret == the error state, if NULL, make a new one */ | |
627 if (ret == NULL) | |
628 { | |
629 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); | |
630 if (ret == NULL) return(&fallback); | |
631 ret->pid=pid; | |
632 ret->top=0; | |
633 ret->bottom=0; | |
634 for (i=0; i<ERR_NUM_ERRORS; i++) | |
635 { | |
636 ret->err_data[i]=NULL; | |
637 ret->err_data_flags[i]=0; | |
638 } | |
639 tmpp = ERRFN(thread_set_item)(ret); | |
640 /* To check if insertion failed, do a get. */ | |
641 if (ERRFN(thread_get_item)(ret) != ret) | |
642 { | |
643 ERR_STATE_free(ret); /* could not insert it */ | |
644 return(&fallback); | |
645 } | |
646 /* If a race occured in this function and we came second, tmpp | |
647 * is the first one that we just replaced. */ | |
648 if (tmpp) | |
649 ERR_STATE_free(tmpp); | |
650 } | |
651 return ret; | |
652 } | |
653 | |
654 #ifdef OPENSSL_FIPS | |
655 void int_ERR_lib_init(void) | |
656 { | |
657 int_ERR_set_state_func(int_err_get_state, int_err_remove_state); | |
658 } | |
659 #endif | |
660 | |
661 int ERR_get_next_error_library(void) | |
662 { | |
663 err_fns_check(); | |
664 return ERRFN(get_next_lib)(); | |
665 } | |
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