1 /* crypto/err/err.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) 1998-2006 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 DECLARE_LHASH_OF(ERR_STRING_DATA);
123 DECLARE_LHASH_OF(ERR_STATE);
124
125 static void err_load_strings(int lib, ERR_STRING_DATA *str);
126
127 static void ERR_STATE_free(ERR_STATE *s);
128 #ifndef OPENSSL_NO_ERR
129 static ERR_STRING_DATA ERR_str_libraries[]=
130 {
131 {ERR_PACK(ERR_LIB_NONE,0,0) ,"unknown library"},
132 {ERR_PACK(ERR_LIB_SYS,0,0) ,"system library"},
133 {ERR_PACK(ERR_LIB_BN,0,0) ,"bignum routines"},
134 {ERR_PACK(ERR_LIB_RSA,0,0) ,"rsa routines"},
135 {ERR_PACK(ERR_LIB_DH,0,0) ,"Diffie-Hellman routines"},
136 {ERR_PACK(ERR_LIB_EVP,0,0) ,"digital envelope routines"},
137 {ERR_PACK(ERR_LIB_BUF,0,0) ,"memory buffer routines"},
138 {ERR_PACK(ERR_LIB_OBJ,0,0) ,"object identifier routines"},
139 {ERR_PACK(ERR_LIB_PEM,0,0) ,"PEM routines"},
140 {ERR_PACK(ERR_LIB_DSA,0,0) ,"dsa routines"},
141 {ERR_PACK(ERR_LIB_X509,0,0) ,"x509 certificate routines"},
142 {ERR_PACK(ERR_LIB_ASN1,0,0) ,"asn1 encoding routines"},
143 {ERR_PACK(ERR_LIB_CONF,0,0) ,"configuration file routines"},
144 {ERR_PACK(ERR_LIB_CRYPTO,0,0) ,"common libcrypto routines"},
145 {ERR_PACK(ERR_LIB_EC,0,0) ,"elliptic curve routines"},
146 {ERR_PACK(ERR_LIB_SSL,0,0) ,"SSL routines"},
147 {ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"},
148 {ERR_PACK(ERR_LIB_PKCS7,0,0) ,"PKCS7 routines"},
149 {ERR_PACK(ERR_LIB_X509V3,0,0) ,"X509 V3 routines"},
150 {ERR_PACK(ERR_LIB_PKCS12,0,0) ,"PKCS12 routines"},
151 {ERR_PACK(ERR_LIB_RAND,0,0) ,"random number generator"},
152 {ERR_PACK(ERR_LIB_DSO,0,0) ,"DSO support routines"},
153 {ERR_PACK(ERR_LIB_TS,0,0) ,"time stamp routines"},
154 {ERR_PACK(ERR_LIB_ENGINE,0,0) ,"engine routines"},
155 {ERR_PACK(ERR_LIB_OCSP,0,0) ,"OCSP routines"},
156 {ERR_PACK(ERR_LIB_FIPS,0,0) ,"FIPS routines"},
157 {ERR_PACK(ERR_LIB_CMS,0,0) ,"CMS routines"},
158 {ERR_PACK(ERR_LIB_HMAC,0,0) ,"HMAC routines"},
159 {0,NULL},
160 };
161
162 static ERR_STRING_DATA ERR_str_functs[]=
163 {
164 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"},
165 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"},
166 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"},
167 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"},
168 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"},
169 {ERR_PACK(0,SYS_F_BIND,0), "bind"},
170 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"},
171 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"},
172 #ifdef OPENSSL_SYS_WINDOWS
173 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"},
174 #endif
175 {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"},
176 {ERR_PACK(0,SYS_F_FREAD,0), "fread"},
177 {0,NULL},
178 };
179
180 static ERR_STRING_DATA ERR_str_reasons[]=
181 {
182 {ERR_R_SYS_LIB ,"system lib"},
183 {ERR_R_BN_LIB ,"BN lib"},
184 {ERR_R_RSA_LIB ,"RSA lib"},
185 {ERR_R_DH_LIB ,"DH lib"},
186 {ERR_R_EVP_LIB ,"EVP lib"},
187 {ERR_R_BUF_LIB ,"BUF lib"},
188 {ERR_R_OBJ_LIB ,"OBJ lib"},
189 {ERR_R_PEM_LIB ,"PEM lib"},
190 {ERR_R_DSA_LIB ,"DSA lib"},
191 {ERR_R_X509_LIB ,"X509 lib"},
192 {ERR_R_ASN1_LIB ,"ASN1 lib"},
193 {ERR_R_CONF_LIB ,"CONF lib"},
194 {ERR_R_CRYPTO_LIB ,"CRYPTO lib"},
195 {ERR_R_EC_LIB ,"EC lib"},
196 {ERR_R_SSL_LIB ,"SSL lib"},
197 {ERR_R_BIO_LIB ,"BIO lib"},
198 {ERR_R_PKCS7_LIB ,"PKCS7 lib"},
199 {ERR_R_X509V3_LIB ,"X509V3 lib"},
200 {ERR_R_PKCS12_LIB ,"PKCS12 lib"},
201 {ERR_R_RAND_LIB ,"RAND lib"},
202 {ERR_R_DSO_LIB ,"DSO lib"},
203 {ERR_R_ENGINE_LIB ,"ENGINE lib"},
204 {ERR_R_OCSP_LIB ,"OCSP lib"},
205 {ERR_R_TS_LIB ,"TS lib"},
206
207 {ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"},
208 {ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"},
209 {ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"},
210 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"},
211 {ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"},
212 {ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"},
213
214 {ERR_R_FATAL ,"fatal"},
215 {ERR_R_MALLOC_FAILURE ,"malloc failure"},
216 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"},
217 {ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"},
218 {ERR_R_INTERNAL_ERROR ,"internal error"},
219 {ERR_R_DISABLED ,"called a function that was disabled at compile-time"},
220
221 {0,NULL},
222 };
223 #endif
224
225
226 /* Define the predeclared (but externally opaque) "ERR_FNS" type */
227 struct st_ERR_FNS
228 {
229 /* Works on the "error_hash" string table */
230 LHASH_OF(ERR_STRING_DATA) *(*cb_err_get)(int create);
231 void (*cb_err_del)(void);
232 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *);
233 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *);
234 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *);
235 /* Works on the "thread_hash" error-state table */
236 LHASH_OF(ERR_STATE) *(*cb_thread_get)(int create);
237 void (*cb_thread_release)(LHASH_OF(ERR_STATE) **hash);
238 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *);
239 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *);
240 void (*cb_thread_del_item)(const ERR_STATE *);
241 /* Returns the next available error "library" numbers */
242 int (*cb_get_next_lib)(void);
243 };
244
245 /* Predeclarations of the "err_defaults" functions */
246 static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create);
247 static void int_err_del(void);
248 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
249 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *);
250 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *);
251 static LHASH_OF(ERR_STATE) *int_thread_get(int create);
252 static void int_thread_release(LHASH_OF(ERR_STATE) **hash);
253 static ERR_STATE *int_thread_get_item(const ERR_STATE *);
254 static ERR_STATE *int_thread_set_item(ERR_STATE *);
255 static void int_thread_del_item(const ERR_STATE *);
256 static int int_err_get_next_lib(void);
257 /* The static ERR_FNS table using these defaults functions */
258 static const ERR_FNS err_defaults =
259 {
260 int_err_get,
261 int_err_del,
262 int_err_get_item,
263 int_err_set_item,
264 int_err_del_item,
265 int_thread_get,
266 int_thread_release,
267 int_thread_get_item,
268 int_thread_set_item,
269 int_thread_del_item,
270 int_err_get_next_lib
271 };
272
273 /* The replacable table of ERR_FNS functions we use at run-time */
274 static const ERR_FNS *err_fns = NULL;
275
276 /* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */
277 #define ERRFN(a) err_fns->cb_##a
278
279 /* The internal state used by "err_defaults" - as such, the setting, reading,
280 * creating, and deleting of this data should only be permitted via the
281 * "err_defaults" functions. This way, a linked module can completely defer all
282 * ERR state operation (together with requisite locking) to the implementations
283 * and state in the loading application. */
284 static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
285 static LHASH_OF(ERR_STATE) *int_thread_hash = NULL;
286 static int int_thread_hash_references = 0;
287 static int int_err_library_number= ERR_LIB_USER;
288
289 /* Internal function that checks whether "err_fns" is set and if not, sets it to
290 * the defaults. */
291 static void err_fns_check(void)
292 {
293 if (err_fns) return;
294
295 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
296 if (!err_fns)
297 err_fns = &err_defaults;
298 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
299 }
300
301 /* API functions to get or set the underlying ERR functions. */
302
303 const ERR_FNS *ERR_get_implementation(void)
304 {
305 err_fns_check();
306 return err_fns;
307 }
308
309 int ERR_set_implementation(const ERR_FNS *fns)
310 {
311 int ret = 0;
312
313 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
314 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting
315 * an error is there?! */
316 if (!err_fns)
317 {
318 err_fns = fns;
319 ret = 1;
320 }
321 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
322 return ret;
323 }
324
325 /* These are the callbacks provided to "lh_new()" when creating the LHASH tables
326 * internal to the "err_defaults" implementation. */
327
328 static unsigned long get_error_values(int inc,int top,const char **file,int *line,
329 const char **data,int *flags);
330
331 /* The internal functions used in the "err_defaults" implementation */
332
333 static unsigned long err_string_data_hash(const ERR_STRING_DATA *a)
334 {
335 unsigned long ret,l;
336
337 l=a->error;
338 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
339 return(ret^ret%19*13);
340 }
341 static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA)
342
343 static int err_string_data_cmp(const ERR_STRING_DATA *a,
344 const ERR_STRING_DATA *b)
345 {
346 return (int)(a->error - b->error);
347 }
348 static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA)
349
350 static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create)
351 {
352 LHASH_OF(ERR_STRING_DATA) *ret = NULL;
353
354 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
355 if (!int_error_hash && create)
356 {
357 CRYPTO_push_info("int_err_get (err.c)");
358 int_error_hash = lh_ERR_STRING_DATA_new();
359 CRYPTO_pop_info();
360 }
361 if (int_error_hash)
362 ret = int_error_hash;
363 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
364
365 return ret;
366 }
367
368 static void int_err_del(void)
369 {
370 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
371 if (int_error_hash)
372 {
373 lh_ERR_STRING_DATA_free(int_error_hash);
374 int_error_hash = NULL;
375 }
376 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
377 }
378
379 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
380 {
381 ERR_STRING_DATA *p;
382 LHASH_OF(ERR_STRING_DATA) *hash;
383
384 err_fns_check();
385 hash = ERRFN(err_get)(0);
386 if (!hash)
387 return NULL;
388
389 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
390 p = lh_ERR_STRING_DATA_retrieve(hash, d);
391 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
392
393 return p;
394 }
395
396 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d)
397 {
398 ERR_STRING_DATA *p;
399 LHASH_OF(ERR_STRING_DATA) *hash;
400
401 err_fns_check();
402 hash = ERRFN(err_get)(1);
403 if (!hash)
404 return NULL;
405
406 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
407 p = lh_ERR_STRING_DATA_insert(hash, d);
408 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
409
410 return p;
411 }
412
413 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d)
414 {
415 ERR_STRING_DATA *p;
416 LHASH_OF(ERR_STRING_DATA) *hash;
417
418 err_fns_check();
419 hash = ERRFN(err_get)(0);
420 if (!hash)
421 return NULL;
422
423 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
424 p = lh_ERR_STRING_DATA_delete(hash, d);
425 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
426
427 return p;
428 }
429
430 static unsigned long err_state_hash(const ERR_STATE *a)
431 {
432 return CRYPTO_THREADID_hash(&a->tid) * 13;
433 }
434 static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE)
435
436 static int err_state_cmp(const ERR_STATE *a, const ERR_STATE *b)
437 {
438 return CRYPTO_THREADID_cmp(&a->tid, &b->tid);
439 }
440 static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE)
441
442 static LHASH_OF(ERR_STATE) *int_thread_get(int create)
443 {
444 LHASH_OF(ERR_STATE) *ret = NULL;
445
446 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
447 if (!int_thread_hash && create)
448 {
449 CRYPTO_push_info("int_thread_get (err.c)");
450 int_thread_hash = lh_ERR_STATE_new();
451 CRYPTO_pop_info();
452 }
453 if (int_thread_hash)
454 {
455 int_thread_hash_references++;
456 ret = int_thread_hash;
457 }
458 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
459 return ret;
460 }
461
462 static void int_thread_release(LHASH_OF(ERR_STATE) **hash)
463 {
464 int i;
465
466 if (hash == NULL || *hash == NULL)
467 return;
468
469 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR);
470
471 #ifdef REF_PRINT
472 fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR");
473 #endif
474 if (i > 0) return;
475 #ifdef REF_CHECK
476 if (i < 0)
477 {
478 fprintf(stderr,"int_thread_release, bad reference count\n");
479 abort(); /* ok */
480 }
481 #endif
482 *hash = NULL;
483 }
484
485 static ERR_STATE *int_thread_get_item(const ERR_STATE *d)
486 {
487 ERR_STATE *p;
488 LHASH_OF(ERR_STATE) *hash;
489
490 err_fns_check();
491 hash = ERRFN(thread_get)(0);
492 if (!hash)
493 return NULL;
494
495 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
496 p = lh_ERR_STATE_retrieve(hash, d);
497 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
498
499 ERRFN(thread_release)(&hash);
500 return p;
501 }
502
503 static ERR_STATE *int_thread_set_item(ERR_STATE *d)
504 {
505 ERR_STATE *p;
506 LHASH_OF(ERR_STATE) *hash;
507
508 err_fns_check();
509 hash = ERRFN(thread_get)(1);
510 if (!hash)
511 return NULL;
512
513 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
514 p = lh_ERR_STATE_insert(hash, d);
515 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
516
517 ERRFN(thread_release)(&hash);
518 return p;
519 }
520
521 static void int_thread_del_item(const ERR_STATE *d)
522 {
523 ERR_STATE *p;
524 LHASH_OF(ERR_STATE) *hash;
525
526 err_fns_check();
527 hash = ERRFN(thread_get)(0);
528 if (!hash)
529 return;
530
531 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
532 p = lh_ERR_STATE_delete(hash, d);
533 /* make sure we don't leak memory */
534 if (int_thread_hash_references == 1
535 && int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0)
536 {
537 lh_ERR_STATE_free(int_thread_hash);
538 int_thread_hash = NULL;
539 }
540 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
541
542 ERRFN(thread_release)(&hash);
543 if (p)
544 ERR_STATE_free(p);
545 }
546
547 static int int_err_get_next_lib(void)
548 {
549 int ret;
550
551 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
552 ret = int_err_library_number++;
553 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
554
555 return ret;
556 }
557
558
559 #ifndef OPENSSL_NO_ERR
560 #define NUM_SYS_STR_REASONS 127
561 #define LEN_SYS_STR_REASON 32
562
563 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
564 /* SYS_str_reasons is filled with copies of strerror() results at
565 * initialization.
566 * 'errno' values up to 127 should cover all usual errors,
567 * others will be displayed numerically by ERR_error_string.
568 * It is crucial that we have something for each reason code
569 * that occurs in ERR_str_reasons, or bogus reason strings
570 * will be returned for SYSerr(), which always gets an errno
571 * value and never one of those 'standard' reason codes. */
572
573 static void build_SYS_str_reasons(void)
574 {
575 /* OPENSSL_malloc cannot be used here, use static storage instead */
576 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
577 int i;
578 static int init = 1;
579
580 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
581 if (!init)
582 {
583 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
584 return;
585 }
586
587 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
588 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
589 if (!init)
590 {
591 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
592 return;
593 }
594
595 for (i = 1; i <= NUM_SYS_STR_REASONS; i++)
596 {
597 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
598
599 str->error = (unsigned long)i;
600 if (str->string == NULL)
601 {
602 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]);
603 char *src = strerror(i);
604 if (src != NULL)
605 {
606 strncpy(*dest, src, sizeof *dest);
607 (*dest)[sizeof *dest - 1] = '\0';
608 str->string = *dest;
609 }
610 }
611 if (str->string == NULL)
612 str->string = "unknown";
613 }
614
615 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL},
616 * as required by ERR_load_strings. */
617
618 init = 0;
619
620 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
621 }
622 #endif
623
624 #define err_clear_data(p,i) \
625 do { \
626 if (((p)->err_data[i] != NULL) && \
627 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
628 { \
629 OPENSSL_free((p)->err_data[i]); \
630 (p)->err_data[i]=NULL; \
631 } \
632 (p)->err_data_flags[i]=0; \
633 } while(0)
634
635 #define err_clear(p,i) \
636 do { \
637 (p)->err_flags[i]=0; \
638 (p)->err_buffer[i]=0; \
639 err_clear_data(p,i); \
640 (p)->err_file[i]=NULL; \
641 (p)->err_line[i]= -1; \
642 } while(0)
643
644 static void ERR_STATE_free(ERR_STATE *s)
645 {
646 int i;
647
648 if (s == NULL)
649 return;
650
651 for (i=0; i<ERR_NUM_ERRORS; i++)
652 {
653 err_clear_data(s,i);
654 }
655 OPENSSL_free(s);
656 }
657
658 void ERR_load_ERR_strings(void)
659 {
660 err_fns_check();
661 #ifndef OPENSSL_NO_ERR
662 err_load_strings(0,ERR_str_libraries);
663 err_load_strings(0,ERR_str_reasons);
664 err_load_strings(ERR_LIB_SYS,ERR_str_functs);
665 build_SYS_str_reasons();
666 err_load_strings(ERR_LIB_SYS,SYS_str_reasons);
667 #endif
668 }
669
670 static void err_load_strings(int lib, ERR_STRING_DATA *str)
671 {
672 while (str->error)
673 {
674 if (lib)
675 str->error|=ERR_PACK(lib,0,0);
676 ERRFN(err_set_item)(str);
677 str++;
678 }
679 }
680
681 void ERR_load_strings(int lib, ERR_STRING_DATA *str)
682 {
683 ERR_load_ERR_strings();
684 err_load_strings(lib, str);
685 }
686
687 void ERR_unload_strings(int lib, ERR_STRING_DATA *str)
688 {
689 while (str->error)
690 {
691 if (lib)
692 str->error|=ERR_PACK(lib,0,0);
693 ERRFN(err_del_item)(str);
694 str++;
695 }
696 }
697
698 void ERR_free_strings(void)
699 {
700 err_fns_check();
701 ERRFN(err_del)();
702 }
703
704 /********************************************************/
705
706 void ERR_put_error(int lib, int func, int reason, const char *file,
707 int line)
708 {
709 ERR_STATE *es;
710
711 #ifdef _OSD_POSIX
712 /* In the BS2000-OSD POSIX subsystem, the compiler generates
713 * path names in the form "*POSIX(/etc/passwd)".
714 * This dirty hack strips them to something sensible.
715 * @@@ We shouldn't modify a const string, though.
716 */
717 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) {
718 char *end;
719
720 /* Skip the "*POSIX(" prefix */
721 file += sizeof("*POSIX(")-1;
722 end = &file[strlen(file)-1];
723 if (*end == ')')
724 *end = '\0';
725 /* Optional: use the basename of the path only. */
726 if ((end = strrchr(file, '/')) != NULL)
727 file = &end[1];
728 }
729 #endif
730 es=ERR_get_state();
731
732 es->top=(es->top+1)%ERR_NUM_ERRORS;
733 if (es->top == es->bottom)
734 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
735 es->err_flags[es->top]=0;
736 es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
737 es->err_file[es->top]=file;
738 es->err_line[es->top]=line;
739 err_clear_data(es,es->top);
740 }
741
742 void ERR_clear_error(void)
743 {
744 int i;
745 ERR_STATE *es;
746
747 es=ERR_get_state();
748
749 for (i=0; i<ERR_NUM_ERRORS; i++)
750 {
751 err_clear(es,i);
752 }
753 es->top=es->bottom=0;
754 }
755
756
757 unsigned long ERR_get_error(void)
758 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); }
759
760 unsigned long ERR_get_error_line(const char **file,
761 int *line)
762 { return(get_error_values(1,0,file,line,NULL,NULL)); }
763
764 unsigned long ERR_get_error_line_data(const char **file, int *line,
765 const char **data, int *flags)
766 { return(get_error_values(1,0,file,line,data,flags)); }
767
768
769 unsigned long ERR_peek_error(void)
770 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); }
771
772 unsigned long ERR_peek_error_line(const char **file, int *line)
773 { return(get_error_values(0,0,file,line,NULL,NULL)); }
774
775 unsigned long ERR_peek_error_line_data(const char **file, int *line,
776 const char **data, int *flags)
777 { return(get_error_values(0,0,file,line,data,flags)); }
778
779
780 unsigned long ERR_peek_last_error(void)
781 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); }
782
783 unsigned long ERR_peek_last_error_line(const char **file, int *line)
784 { return(get_error_values(0,1,file,line,NULL,NULL)); }
785
786 unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
787 const char **data, int *flags)
788 { return(get_error_values(0,1,file,line,data,flags)); }
789
790
791 static unsigned long get_error_values(int inc, int top, const char **file, int *line,
792 const char **data, int *flags)
793 {
794 int i=0;
795 ERR_STATE *es;
796 unsigned long ret;
797
798 es=ERR_get_state();
799
800 if (inc && top)
801 {
802 if (file) *file = "";
803 if (line) *line = 0;
804 if (data) *data = "";
805 if (flags) *flags = 0;
806
807 return ERR_R_INTERNAL_ERROR;
808 }
809
810 if (es->bottom == es->top) return 0;
811 if (top)
812 i=es->top; /* last error */
813 else
814 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */
815
816 ret=es->err_buffer[i];
817 if (inc)
818 {
819 es->bottom=i;
820 es->err_buffer[i]=0;
821 }
822
823 if ((file != NULL) && (line != NULL))
824 {
825 if (es->err_file[i] == NULL)
826 {
827 *file="NA";
828 if (line != NULL) *line=0;
829 }
830 else
831 {
832 *file=es->err_file[i];
833 if (line != NULL) *line=es->err_line[i];
834 }
835 }
836
837 if (data == NULL)
838 {
839 if (inc)
840 {
841 err_clear_data(es, i);
842 }
843 }
844 else
845 {
846 if (es->err_data[i] == NULL)
847 {
848 *data="";
849 if (flags != NULL) *flags=0;
850 }
851 else
852 {
853 *data=es->err_data[i];
854 if (flags != NULL) *flags=es->err_data_flags[i];
855 }
856 }
857 return ret;
858 }
859
860 void ERR_error_string_n(unsigned long e, char *buf, size_t len)
861 {
862 char lsbuf[64], fsbuf[64], rsbuf[64];
863 const char *ls,*fs,*rs;
864 unsigned long l,f,r;
865
866 l=ERR_GET_LIB(e);
867 f=ERR_GET_FUNC(e);
868 r=ERR_GET_REASON(e);
869
870 ls=ERR_lib_error_string(e);
871 fs=ERR_func_error_string(e);
872 rs=ERR_reason_error_string(e);
873
874 if (ls == NULL)
875 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
876 if (fs == NULL)
877 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
878 if (rs == NULL)
879 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
880
881 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf,
882 fs?fs:fsbuf, rs?rs:rsbuf);
883 if (strlen(buf) == len-1)
884 {
885 /* output may be truncated; make sure we always have 5
886 * colon-separated fields, i.e. 4 colons ... */
887 #define NUM_COLONS 4
888 if (len > NUM_COLONS) /* ... if possible */
889 {
890 int i;
891 char *s = buf;
892
893 for (i = 0; i < NUM_COLONS; i++)
894 {
895 char *colon = strchr(s, ':');
896 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i)
897 {
898 /* set colon no. i at last possible position
899 * (buf[len-1] is the terminating 0)*/
900 colon = &buf[len-1] - NUM_COLONS + i;
901 *colon = ':';
902 }
903 s = colon + 1;
904 }
905 }
906 }
907 }
908
909 /* BAD for multi-threading: uses a local buffer if ret == NULL */
910 /* ERR_error_string_n should be used instead for ret != NULL
911 * as ERR_error_string cannot know how large the buffer is */
912 char *ERR_error_string(unsigned long e, char *ret)
913 {
914 static char buf[256];
915
916 if (ret == NULL) ret=buf;
917 ERR_error_string_n(e, ret, 256);
918
919 return ret;
920 }
921
922 LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void)
923 {
924 err_fns_check();
925 return ERRFN(err_get)(0);
926 }
927
928 LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void)
929 {
930 err_fns_check();
931 return ERRFN(thread_get)(0);
932 }
933
934 void ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash)
935 {
936 err_fns_check();
937 ERRFN(thread_release)(hash);
938 }
939
940 const char *ERR_lib_error_string(unsigned long e)
941 {
942 ERR_STRING_DATA d,*p;
943 unsigned long l;
944
945 err_fns_check();
946 l=ERR_GET_LIB(e);
947 d.error=ERR_PACK(l,0,0);
948 p=ERRFN(err_get_item)(&d);
949 return((p == NULL)?NULL:p->string);
950 }
951
952 const char *ERR_func_error_string(unsigned long e)
953 {
954 ERR_STRING_DATA d,*p;
955 unsigned long l,f;
956
957 err_fns_check();
958 l=ERR_GET_LIB(e);
959 f=ERR_GET_FUNC(e);
960 d.error=ERR_PACK(l,f,0);
961 p=ERRFN(err_get_item)(&d);
962 return((p == NULL)?NULL:p->string);
963 }
964
965 const char *ERR_reason_error_string(unsigned long e)
966 {
967 ERR_STRING_DATA d,*p=NULL;
968 unsigned long l,r;
969
970 err_fns_check();
971 l=ERR_GET_LIB(e);
972 r=ERR_GET_REASON(e);
973 d.error=ERR_PACK(l,0,r);
974 p=ERRFN(err_get_item)(&d);
975 if (!p)
976 {
977 d.error=ERR_PACK(0,0,r);
978 p=ERRFN(err_get_item)(&d);
979 }
980 return((p == NULL)?NULL:p->string);
981 }
982
983 void ERR_remove_thread_state(const CRYPTO_THREADID *id)
984 {
985 ERR_STATE tmp;
986
987 if (id)
988 CRYPTO_THREADID_cpy(&tmp.tid, id);
989 else
990 CRYPTO_THREADID_current(&tmp.tid);
991 err_fns_check();
992 /* thread_del_item automatically destroys the LHASH if the number of
993 * items reaches zero. */
994 ERRFN(thread_del_item)(&tmp);
995 }
996
997 #ifndef OPENSSL_NO_DEPRECATED
998 void ERR_remove_state(unsigned long pid)
999 {
1000 ERR_remove_thread_state(NULL);
1001 }
1002 #endif
1003
1004 ERR_STATE *ERR_get_state(void)
1005 {
1006 static ERR_STATE fallback;
1007 ERR_STATE *ret,tmp,*tmpp=NULL;
1008 int i;
1009 CRYPTO_THREADID tid;
1010
1011 err_fns_check();
1012 CRYPTO_THREADID_current(&tid);
1013 CRYPTO_THREADID_cpy(&tmp.tid, &tid);
1014 ret=ERRFN(thread_get_item)(&tmp);
1015
1016 /* ret == the error state, if NULL, make a new one */
1017 if (ret == NULL)
1018 {
1019 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE));
1020 if (ret == NULL) return(&fallback);
1021 CRYPTO_THREADID_cpy(&ret->tid, &tid);
1022 ret->top=0;
1023 ret->bottom=0;
1024 for (i=0; i<ERR_NUM_ERRORS; i++)
1025 {
1026 ret->err_data[i]=NULL;
1027 ret->err_data_flags[i]=0;
1028 }
1029 tmpp = ERRFN(thread_set_item)(ret);
1030 /* To check if insertion failed, do a get. */
1031 if (ERRFN(thread_get_item)(ret) != ret)
1032 {
1033 ERR_STATE_free(ret); /* could not insert it */
1034 return(&fallback);
1035 }
1036 /* If a race occured in this function and we came second, tmpp
1037 * is the first one that we just replaced. */
1038 if (tmpp)
1039 ERR_STATE_free(tmpp);
1040 }
1041 return ret;
1042 }
1043
1044 int ERR_get_next_error_library(void)
1045 {
1046 err_fns_check();
1047 return ERRFN(get_next_lib)();
1048 }
1049
1050 void ERR_set_error_data(char *data, int flags)
1051 {
1052 ERR_STATE *es;
1053 int i;
1054
1055 es=ERR_get_state();
1056
1057 i=es->top;
1058 if (i == 0)
1059 i=ERR_NUM_ERRORS-1;
1060
1061 err_clear_data(es,i);
1062 es->err_data[i]=data;
1063 es->err_data_flags[i]=flags;
1064 }
1065
1066 void ERR_add_error_data(int num, ...)
1067 {
1068 va_list args;
1069 va_start(args, num);
1070 ERR_add_error_vdata(num, args);
1071 va_end(args);
1072 }
1073
1074 void ERR_add_error_vdata(int num, va_list args)
1075 {
1076 int i,n,s;
1077 char *str,*p,*a;
1078
1079 s=80;
1080 str=OPENSSL_malloc(s+1);
1081 if (str == NULL) return;
1082 str[0]='\0';
1083
1084 n=0;
1085 for (i=0; i<num; i++)
1086 {
1087 a=va_arg(args, char*);
1088 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
1089 if (a != NULL)
1090 {
1091 n+=strlen(a);
1092 if (n > s)
1093 {
1094 s=n+20;
1095 p=OPENSSL_realloc(str,s+1);
1096 if (p == NULL)
1097 {
1098 OPENSSL_free(str);
1099 return;
1100 }
1101 else
1102 str=p;
1103 }
1104 BUF_strlcat(str,a,(size_t)s+1);
1105 }
1106 }
1107 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING);
1108 }
1109
1110 int ERR_set_mark(void)
1111 {
1112 ERR_STATE *es;
1113
1114 es=ERR_get_state();
1115
1116 if (es->bottom == es->top) return 0;
1117 es->err_flags[es->top]|=ERR_FLAG_MARK;
1118 return 1;
1119 }
1120
1121 int ERR_pop_to_mark(void)
1122 {
1123 ERR_STATE *es;
1124
1125 es=ERR_get_state();
1126
1127 while(es->bottom != es->top
1128 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0)
1129 {
1130 err_clear(es,es->top);
1131 es->top-=1;
1132 if (es->top == -1) es->top=ERR_NUM_ERRORS-1;
1133 }
1134
1135 if (es->bottom == es->top) return 0;
1136 es->err_flags[es->top]&=~ERR_FLAG_MARK;
1137 return 1;
1138 }