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1/* $OpenBSD: err.c,v 1.41 2014/11/09 19:17:13 miod Exp $ */
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 <stdarg.h>
113#include <stdio.h>
114#include <string.h>
115
116#include <openssl/opensslconf.h>
117
118#include <openssl/bio.h>
119#include <openssl/buffer.h>
120#include <openssl/crypto.h>
121#include <openssl/err.h>
122#include <openssl/lhash.h>
123
124DECLARE_LHASH_OF(ERR_STRING_DATA);
125DECLARE_LHASH_OF(ERR_STATE);
126
127static void err_load_strings(int lib, ERR_STRING_DATA *str);
128
129static void ERR_STATE_free(ERR_STATE *s);
130#ifndef OPENSSL_NO_ERR
131static ERR_STRING_DATA ERR_str_libraries[] = {
132 {ERR_PACK(ERR_LIB_NONE,0,0), "unknown library"},
133 {ERR_PACK(ERR_LIB_SYS,0,0), "system library"},
134 {ERR_PACK(ERR_LIB_BN,0,0), "bignum routines"},
135 {ERR_PACK(ERR_LIB_RSA,0,0), "rsa routines"},
136 {ERR_PACK(ERR_LIB_DH,0,0), "Diffie-Hellman routines"},
137 {ERR_PACK(ERR_LIB_EVP,0,0), "digital envelope routines"},
138 {ERR_PACK(ERR_LIB_BUF,0,0), "memory buffer routines"},
139 {ERR_PACK(ERR_LIB_OBJ,0,0), "object identifier routines"},
140 {ERR_PACK(ERR_LIB_PEM,0,0), "PEM routines"},
141 {ERR_PACK(ERR_LIB_DSA,0,0), "dsa routines"},
142 {ERR_PACK(ERR_LIB_X509,0,0), "x509 certificate routines"},
143 {ERR_PACK(ERR_LIB_ASN1,0,0), "asn1 encoding routines"},
144 {ERR_PACK(ERR_LIB_CONF,0,0), "configuration file routines"},
145 {ERR_PACK(ERR_LIB_CRYPTO,0,0), "common libcrypto routines"},
146 {ERR_PACK(ERR_LIB_EC,0,0), "elliptic curve routines"},
147 {ERR_PACK(ERR_LIB_SSL,0,0), "SSL routines"},
148 {ERR_PACK(ERR_LIB_BIO,0,0), "BIO routines"},
149 {ERR_PACK(ERR_LIB_PKCS7,0,0), "PKCS7 routines"},
150 {ERR_PACK(ERR_LIB_X509V3,0,0), "X509 V3 routines"},
151 {ERR_PACK(ERR_LIB_PKCS12,0,0), "PKCS12 routines"},
152 {ERR_PACK(ERR_LIB_RAND,0,0), "random number generator"},
153 {ERR_PACK(ERR_LIB_DSO,0,0), "DSO support routines"},
154 {ERR_PACK(ERR_LIB_TS,0,0), "time stamp routines"},
155 {ERR_PACK(ERR_LIB_ENGINE,0,0), "engine routines"},
156 {ERR_PACK(ERR_LIB_OCSP,0,0), "OCSP routines"},
157 {ERR_PACK(ERR_LIB_FIPS,0,0), "FIPS routines"},
158 {ERR_PACK(ERR_LIB_CMS,0,0), "CMS routines"},
159 {ERR_PACK(ERR_LIB_HMAC,0,0), "HMAC routines"},
160 {ERR_PACK(ERR_LIB_GOST,0,0), "GOST routines"},
161 {0, NULL},
162};
163
164static ERR_STRING_DATA ERR_str_functs[] = {
165 {ERR_PACK(0,SYS_F_FOPEN, 0), "fopen"},
166 {ERR_PACK(0,SYS_F_CONNECT, 0), "connect"},
167 {ERR_PACK(0,SYS_F_GETSERVBYNAME, 0), "getservbyname"},
168 {ERR_PACK(0,SYS_F_SOCKET, 0), "socket"},
169 {ERR_PACK(0,SYS_F_IOCTLSOCKET, 0), "ioctl"},
170 {ERR_PACK(0,SYS_F_BIND, 0), "bind"},
171 {ERR_PACK(0,SYS_F_LISTEN, 0), "listen"},
172 {ERR_PACK(0,SYS_F_ACCEPT, 0), "accept"},
173 {ERR_PACK(0,SYS_F_OPENDIR, 0), "opendir"},
174 {ERR_PACK(0,SYS_F_FREAD, 0), "fread"},
175 {0, NULL},
176};
177
178static ERR_STRING_DATA ERR_str_reasons[] = {
179 {ERR_R_SYS_LIB, "system lib"},
180 {ERR_R_BN_LIB, "BN lib"},
181 {ERR_R_RSA_LIB, "RSA lib"},
182 {ERR_R_DH_LIB, "DH lib"},
183 {ERR_R_EVP_LIB, "EVP lib"},
184 {ERR_R_BUF_LIB, "BUF lib"},
185 {ERR_R_OBJ_LIB, "OBJ lib"},
186 {ERR_R_PEM_LIB, "PEM lib"},
187 {ERR_R_DSA_LIB, "DSA lib"},
188 {ERR_R_X509_LIB, "X509 lib"},
189 {ERR_R_ASN1_LIB, "ASN1 lib"},
190 {ERR_R_CONF_LIB, "CONF lib"},
191 {ERR_R_CRYPTO_LIB, "CRYPTO lib"},
192 {ERR_R_EC_LIB, "EC lib"},
193 {ERR_R_SSL_LIB, "SSL lib"},
194 {ERR_R_BIO_LIB, "BIO lib"},
195 {ERR_R_PKCS7_LIB, "PKCS7 lib"},
196 {ERR_R_X509V3_LIB, "X509V3 lib"},
197 {ERR_R_PKCS12_LIB, "PKCS12 lib"},
198 {ERR_R_RAND_LIB, "RAND lib"},
199 {ERR_R_DSO_LIB, "DSO lib"},
200 {ERR_R_ENGINE_LIB, "ENGINE lib"},
201 {ERR_R_OCSP_LIB, "OCSP lib"},
202 {ERR_R_TS_LIB, "TS lib"},
203
204 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"},
205 {ERR_R_BAD_ASN1_OBJECT_HEADER, "bad asn1 object header"},
206 {ERR_R_BAD_GET_ASN1_OBJECT_CALL, "bad get asn1 object call"},
207 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE, "expecting an asn1 sequence"},
208 {ERR_R_ASN1_LENGTH_MISMATCH, "asn1 length mismatch"},
209 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"},
210
211 {ERR_R_FATAL, "fatal"},
212 {ERR_R_MALLOC_FAILURE, "malloc failure"},
213 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, "called a function you should not call"},
214 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"},
215 {ERR_R_INTERNAL_ERROR, "internal error"},
216 {ERR_R_DISABLED , "called a function that was disabled at compile-time"},
217
218 {0, NULL},
219};
220#endif
221
222
223/* Define the predeclared (but externally opaque) "ERR_FNS" type */
224struct st_ERR_FNS {
225 /* Works on the "error_hash" string table */
226 LHASH_OF(ERR_STRING_DATA) *(*cb_err_get)(int create);
227 void (*cb_err_del)(void);
228 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *);
229 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *);
230 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *);
231 /* Works on the "thread_hash" error-state table */
232 LHASH_OF(ERR_STATE) *(*cb_thread_get)(int create);
233 void (*cb_thread_release)(LHASH_OF(ERR_STATE) **hash);
234 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *);
235 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *);
236 void (*cb_thread_del_item)(const ERR_STATE *);
237 /* Returns the next available error "library" numbers */
238 int (*cb_get_next_lib)(void);
239};
240
241/* Predeclarations of the "err_defaults" functions */
242static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create);
243static void int_err_del(void);
244static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
245static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *);
246static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *);
247static LHASH_OF(ERR_STATE) *int_thread_get(int create);
248static void int_thread_release(LHASH_OF(ERR_STATE) **hash);
249static ERR_STATE *int_thread_get_item(const ERR_STATE *);
250static ERR_STATE *int_thread_set_item(ERR_STATE *);
251static void int_thread_del_item(const ERR_STATE *);
252static int int_err_get_next_lib(void);
253
254/* The static ERR_FNS table using these defaults functions */
255static const ERR_FNS err_defaults = {
256 int_err_get,
257 int_err_del,
258 int_err_get_item,
259 int_err_set_item,
260 int_err_del_item,
261 int_thread_get,
262 int_thread_release,
263 int_thread_get_item,
264 int_thread_set_item,
265 int_thread_del_item,
266 int_err_get_next_lib
267};
268
269/* The replacable table of ERR_FNS functions we use at run-time */
270static const ERR_FNS *err_fns = NULL;
271
272/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */
273#define ERRFN(a) err_fns->cb_##a
274
275/* The internal state used by "err_defaults" - as such, the setting, reading,
276 * creating, and deleting of this data should only be permitted via the
277 * "err_defaults" functions. This way, a linked module can completely defer all
278 * ERR state operation (together with requisite locking) to the implementations
279 * and state in the loading application. */
280static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
281static LHASH_OF(ERR_STATE) *int_thread_hash = NULL;
282static int int_thread_hash_references = 0;
283static int int_err_library_number = ERR_LIB_USER;
284
285/* Internal function that checks whether "err_fns" is set and if not, sets it to
286 * the defaults. */
287static void
288err_fns_check(void)
289{
290 if (err_fns)
291 return;
292
293 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
294 if (!err_fns)
295 err_fns = &err_defaults;
296 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
297}
298
299/* API functions to get or set the underlying ERR functions. */
300
301const ERR_FNS *
302ERR_get_implementation(void)
303{
304 err_fns_check();
305 return err_fns;
306}
307
308int
309ERR_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 err_fns = fns;
318 ret = 1;
319 }
320 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
321 return ret;
322}
323
324/* These are the callbacks provided to "lh_new()" when creating the LHASH tables
325 * internal to the "err_defaults" implementation. */
326
327static unsigned long get_error_values(int inc, int top, const char **file,
328 int *line, const char **data, int *flags);
329
330/* The internal functions used in the "err_defaults" implementation */
331
332static unsigned long
333err_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}
341static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA)
342
343static int
344err_string_data_cmp(const ERR_STRING_DATA *a, const ERR_STRING_DATA *b)
345{
346 return (int)(a->error - b->error);
347}
348static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA)
349
350static
351LHASH_OF(ERR_STRING_DATA) *int_err_get(int create)
352{
353 LHASH_OF(ERR_STRING_DATA) *ret = NULL;
354
355 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
356 if (!int_error_hash && create) {
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
368static void
369int_err_del(void)
370{
371 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
372 if (int_error_hash) {
373 lh_ERR_STRING_DATA_free(int_error_hash);
374 int_error_hash = NULL;
375 }
376 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
377}
378
379static ERR_STRING_DATA *
380int_err_get_item(const ERR_STRING_DATA *d)
381{
382 ERR_STRING_DATA *p;
383 LHASH_OF(ERR_STRING_DATA) *hash;
384
385 err_fns_check();
386 hash = ERRFN(err_get)(0);
387 if (!hash)
388 return NULL;
389
390 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
391 p = lh_ERR_STRING_DATA_retrieve(hash, d);
392 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
393
394 return p;
395}
396
397static ERR_STRING_DATA *
398int_err_set_item(ERR_STRING_DATA *d)
399{
400 ERR_STRING_DATA *p;
401 LHASH_OF(ERR_STRING_DATA) *hash;
402
403 err_fns_check();
404 hash = ERRFN(err_get)(1);
405 if (!hash)
406 return NULL;
407
408 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
409 p = lh_ERR_STRING_DATA_insert(hash, d);
410 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
411
412 return p;
413}
414
415static ERR_STRING_DATA *
416int_err_del_item(ERR_STRING_DATA *d)
417{
418 ERR_STRING_DATA *p;
419 LHASH_OF(ERR_STRING_DATA) *hash;
420
421 err_fns_check();
422 hash = ERRFN(err_get)(0);
423 if (!hash)
424 return NULL;
425
426 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
427 p = lh_ERR_STRING_DATA_delete(hash, d);
428 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
429
430 return p;
431}
432
433static unsigned long
434err_state_hash(const ERR_STATE *a)
435{
436 return CRYPTO_THREADID_hash(&a->tid) * 13;
437}
438static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE)
439
440static int
441err_state_cmp(const ERR_STATE *a, const ERR_STATE *b)
442{
443 return CRYPTO_THREADID_cmp(&a->tid, &b->tid);
444}
445static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE)
446
447static
448LHASH_OF(ERR_STATE) *int_thread_get(int create)
449{
450 LHASH_OF(ERR_STATE) *ret = NULL;
451
452 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
453 if (!int_thread_hash && create) {
454 CRYPTO_push_info("int_thread_get (err.c)");
455 int_thread_hash = lh_ERR_STATE_new();
456 CRYPTO_pop_info();
457 }
458 if (int_thread_hash) {
459 int_thread_hash_references++;
460 ret = int_thread_hash;
461 }
462 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
463 return ret;
464}
465
466static void
467int_thread_release(LHASH_OF(ERR_STATE) **hash)
468{
469 int i;
470
471 if (hash == NULL || *hash == NULL)
472 return;
473
474 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR);
475 if (i > 0)
476 return;
477
478 *hash = NULL;
479}
480
481static ERR_STATE *
482int_thread_get_item(const ERR_STATE *d)
483{
484 ERR_STATE *p;
485 LHASH_OF(ERR_STATE) *hash;
486
487 err_fns_check();
488 hash = ERRFN(thread_get)(0);
489 if (!hash)
490 return NULL;
491
492 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
493 p = lh_ERR_STATE_retrieve(hash, d);
494 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
495
496 ERRFN(thread_release)(&hash);
497 return p;
498}
499
500static ERR_STATE *
501int_thread_set_item(ERR_STATE *d)
502{
503 ERR_STATE *p;
504 LHASH_OF(ERR_STATE) *hash;
505
506 err_fns_check();
507 hash = ERRFN(thread_get)(1);
508 if (!hash)
509 return NULL;
510
511 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
512 p = lh_ERR_STATE_insert(hash, d);
513 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
514
515 ERRFN(thread_release)(&hash);
516 return p;
517}
518
519static void
520int_thread_del_item(const ERR_STATE *d)
521{
522 ERR_STATE *p;
523 LHASH_OF(ERR_STATE) *hash;
524
525 err_fns_check();
526 hash = ERRFN(thread_get)(0);
527 if (!hash)
528 return;
529
530 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
531 p = lh_ERR_STATE_delete(hash, d);
532 /* make sure we don't leak memory */
533 if (int_thread_hash_references == 1 &&
534 int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) {
535 lh_ERR_STATE_free(int_thread_hash);
536 int_thread_hash = NULL;
537 }
538 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
539
540 ERRFN(thread_release)(&hash);
541 if (p)
542 ERR_STATE_free(p);
543}
544
545static int
546int_err_get_next_lib(void)
547{
548 int ret;
549
550 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
551 ret = int_err_library_number++;
552 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
553
554 return ret;
555}
556
557
558#ifndef OPENSSL_NO_ERR
559#define NUM_SYS_STR_REASONS 127
560#define LEN_SYS_STR_REASON 32
561
562static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
563/* SYS_str_reasons is filled with copies of strerror() results at
564 * initialization.
565 * 'errno' values up to 127 should cover all usual errors,
566 * others will be displayed numerically by ERR_error_string.
567 * It is crucial that we have something for each reason code
568 * that occurs in ERR_str_reasons, or bogus reason strings
569 * will be returned for SYSerr(), which always gets an errno
570 * value and never one of those 'standard' reason codes. */
571
572static void
573build_SYS_str_reasons(void)
574{
575 /* 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 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
583 return;
584 }
585
586 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
587 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
588 if (!init) {
589 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
590 return;
591 }
592
593 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) {
594 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
595
596 str->error = (unsigned long)i;
597 if (str->string == NULL) {
598 char (*dest)[LEN_SYS_STR_REASON] =
599 &(strerror_tab[i - 1]);
600 const char *src = strerror(i);
601 if (src != NULL) {
602 strlcpy(*dest, src, sizeof *dest);
603 str->string = *dest;
604 }
605 }
606 if (str->string == NULL)
607 str->string = "unknown";
608 }
609
610 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL},
611 * as required by ERR_load_strings. */
612
613 init = 0;
614
615 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
616}
617#endif
618
619#define err_clear_data(p,i) \
620 do { \
621 if (((p)->err_data[i] != NULL) && \
622 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) { \
623 free((p)->err_data[i]); \
624 (p)->err_data[i] = NULL; \
625 } \
626 (p)->err_data_flags[i] = 0; \
627 } while(0)
628
629#define err_clear(p,i) \
630 do { \
631 (p)->err_flags[i] = 0; \
632 (p)->err_buffer[i] = 0; \
633 err_clear_data(p, i); \
634 (p)->err_file[i] = NULL; \
635 (p)->err_line[i] = -1; \
636 } while(0)
637
638static void
639ERR_STATE_free(ERR_STATE *s)
640{
641 int i;
642
643 if (s == NULL)
644 return;
645
646 for (i = 0; i < ERR_NUM_ERRORS; i++) {
647 err_clear_data(s, i);
648 }
649 free(s);
650}
651
652void
653ERR_load_ERR_strings(void)
654{
655 err_fns_check();
656#ifndef OPENSSL_NO_ERR
657 err_load_strings(0, ERR_str_libraries);
658 err_load_strings(0, ERR_str_reasons);
659 err_load_strings(ERR_LIB_SYS, ERR_str_functs);
660 build_SYS_str_reasons();
661 err_load_strings(ERR_LIB_SYS, SYS_str_reasons);
662#endif
663}
664
665static void
666err_load_strings(int lib, ERR_STRING_DATA *str)
667{
668 while (str->error) {
669 if (lib)
670 str->error |= ERR_PACK(lib, 0, 0);
671 ERRFN(err_set_item)(str);
672 str++;
673 }
674}
675
676void
677ERR_load_strings(int lib, ERR_STRING_DATA *str)
678{
679 ERR_load_ERR_strings();
680 err_load_strings(lib, str);
681}
682
683void
684ERR_unload_strings(int lib, ERR_STRING_DATA *str)
685{
686 while (str->error) {
687 if (lib)
688 str->error |= ERR_PACK(lib, 0, 0);
689 ERRFN(err_del_item)(str);
690 str++;
691 }
692}
693
694void
695ERR_free_strings(void)
696{
697 err_fns_check();
698 ERRFN(err_del)();
699}
700
701/********************************************************/
702
703void
704ERR_put_error(int lib, int func, int reason, const char *file, int line)
705{
706 ERR_STATE *es;
707 int save_errno = errno;
708
709 es = ERR_get_state();
710
711 es->top = (es->top + 1) % ERR_NUM_ERRORS;
712 if (es->top == es->bottom)
713 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS;
714 es->err_flags[es->top] = 0;
715 es->err_buffer[es->top] = ERR_PACK(lib, func, reason);
716 es->err_file[es->top] = file;
717 es->err_line[es->top] = line;
718 err_clear_data(es, es->top);
719 errno = save_errno;
720}
721
722void
723ERR_clear_error(void)
724{
725 int i;
726 ERR_STATE *es;
727
728 es = ERR_get_state();
729
730 for (i = 0; i < ERR_NUM_ERRORS; i++) {
731 err_clear(es, i);
732 }
733 es->top = es->bottom = 0;
734}
735
736
737unsigned long
738ERR_get_error(void)
739{
740 return (get_error_values(1, 0, NULL, NULL, NULL, NULL));
741}
742
743unsigned long
744ERR_get_error_line(const char **file, int *line)
745{
746 return (get_error_values(1, 0, file, line, NULL, NULL));
747}
748
749unsigned long
750ERR_get_error_line_data(const char **file, int *line,
751 const char **data, int *flags)
752{
753 return (get_error_values(1, 0, file, line, data, flags));
754}
755
756
757unsigned long
758ERR_peek_error(void)
759{
760 return (get_error_values(0, 0, NULL, NULL, NULL, NULL));
761}
762
763unsigned long
764ERR_peek_error_line(const char **file, int *line)
765{
766 return (get_error_values(0, 0, file, line, NULL, NULL));
767}
768
769unsigned long
770ERR_peek_error_line_data(const char **file, int *line,
771 const char **data, int *flags)
772{
773 return (get_error_values(0, 0, file, line, data, flags));
774}
775
776unsigned long
777ERR_peek_last_error(void)
778{
779 return (get_error_values(0, 1, NULL, NULL, NULL, NULL));
780}
781
782unsigned long
783ERR_peek_last_error_line(const char **file, int *line)
784{
785 return (get_error_values(0, 1, file, line, NULL, NULL));
786}
787
788unsigned long
789ERR_peek_last_error_line_data(const char **file, int *line,
790 const char **data, int *flags)
791{
792 return (get_error_values(0, 1, file, line, data, flags));
793}
794
795static unsigned long
796get_error_values(int inc, int top, const char **file, int *line,
797 const char **data, int *flags)
798{
799 int i = 0;
800 ERR_STATE *es;
801 unsigned long ret;
802
803 es = ERR_get_state();
804
805 if (inc && top) {
806 if (file)
807 *file = "";
808 if (line)
809 *line = 0;
810 if (data)
811 *data = "";
812 if (flags)
813 *flags = 0;
814
815 return ERR_R_INTERNAL_ERROR;
816 }
817
818 if (es->bottom == es->top)
819 return 0;
820 if (top)
821 i = es->top; /* last error */
822 else
823 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */
824
825 ret = es->err_buffer[i];
826 if (inc) {
827 es->bottom = i;
828 es->err_buffer[i] = 0;
829 }
830
831 if ((file != NULL) && (line != NULL)) {
832 if (es->err_file[i] == NULL) {
833 *file = "NA";
834 if (line != NULL)
835 *line = 0;
836 } else {
837 *file = es->err_file[i];
838 if (line != NULL)
839 *line = es->err_line[i];
840 }
841 }
842
843 if (data == NULL) {
844 if (inc) {
845 err_clear_data(es, i);
846 }
847 } else {
848 if (es->err_data[i] == NULL) {
849 *data = "";
850 if (flags != NULL)
851 *flags = 0;
852 } else {
853 *data = es->err_data[i];
854 if (flags != NULL)
855 *flags = es->err_data_flags[i];
856 }
857 }
858 return ret;
859}
860
861void
862ERR_error_string_n(unsigned long e, char *buf, size_t len)
863{
864 char lsbuf[30], fsbuf[30], rsbuf[30];
865 const char *ls, *fs, *rs;
866 int l, f, r, ret;
867
868 l = ERR_GET_LIB(e);
869 f = ERR_GET_FUNC(e);
870 r = ERR_GET_REASON(e);
871
872 ls = ERR_lib_error_string(e);
873 fs = ERR_func_error_string(e);
874 rs = ERR_reason_error_string(e);
875
876 if (ls == NULL) {
877 (void) snprintf(lsbuf, sizeof(lsbuf), "lib(%d)", l);
878 ls = lsbuf;
879 }
880 if (fs == NULL) {
881 (void) snprintf(fsbuf, sizeof(fsbuf), "func(%d)", f);
882 fs = fsbuf;
883 }
884 if (rs == NULL) {
885 (void) snprintf(rsbuf, sizeof(rsbuf), "reason(%d)", r);
886 rs = rsbuf;
887 }
888
889 ret = snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs);
890 if (ret == -1)
891 return; /* can't happen, and can't do better if it does */
892 if (ret >= len) {
893 /* output may be truncated; make sure we always have 5
894 * colon-separated fields, i.e. 4 colons ... */
895#define NUM_COLONS 4
896 if (len > NUM_COLONS) /* ... if possible */
897 {
898 int i;
899 char *s = buf;
900
901 for (i = 0; i < NUM_COLONS; i++) {
902 char *colon = strchr(s, ':');
903 if (colon == NULL ||
904 colon > &buf[len - 1] - NUM_COLONS + i) {
905 /* set colon no. i at last possible position
906 * (buf[len-1] is the terminating 0)*/
907 colon = &buf[len - 1] - NUM_COLONS + i;
908 *colon = ':';
909 }
910 s = colon + 1;
911 }
912 }
913 }
914}
915
916/* BAD for multi-threading: uses a local buffer if ret == NULL */
917/* ERR_error_string_n should be used instead for ret != NULL
918 * as ERR_error_string cannot know how large the buffer is */
919char *
920ERR_error_string(unsigned long e, char *ret)
921{
922 static char buf[256];
923
924 if (ret == NULL)
925 ret = buf;
926 ERR_error_string_n(e, ret, 256);
927
928 return ret;
929}
930
931LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void)
932{
933 err_fns_check();
934 return ERRFN(err_get)(0);
935}
936
937LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void)
938{
939 err_fns_check();
940 return ERRFN(thread_get)(0);
941}
942
943void
944ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash)
945{
946 err_fns_check();
947 ERRFN(thread_release)(hash);
948}
949
950const char *
951ERR_lib_error_string(unsigned long e)
952{
953 ERR_STRING_DATA d, *p;
954 unsigned long l;
955
956 err_fns_check();
957 l = ERR_GET_LIB(e);
958 d.error = ERR_PACK(l, 0, 0);
959 p = ERRFN(err_get_item)(&d);
960 return ((p == NULL) ? NULL : p->string);
961}
962
963const char *
964ERR_func_error_string(unsigned long e)
965{
966 ERR_STRING_DATA d, *p;
967 unsigned long l, f;
968
969 err_fns_check();
970 l = ERR_GET_LIB(e);
971 f = ERR_GET_FUNC(e);
972 d.error = ERR_PACK(l, f, 0);
973 p = ERRFN(err_get_item)(&d);
974 return ((p == NULL) ? NULL : p->string);
975}
976
977const char *
978ERR_reason_error_string(unsigned long e)
979{
980 ERR_STRING_DATA d, *p = NULL;
981 unsigned long l, r;
982
983 err_fns_check();
984 l = ERR_GET_LIB(e);
985 r = ERR_GET_REASON(e);
986 d.error = ERR_PACK(l, 0, r);
987 p = ERRFN(err_get_item)(&d);
988 if (!p) {
989 d.error = ERR_PACK(0, 0, r);
990 p = ERRFN(err_get_item)(&d);
991 }
992 return ((p == NULL) ? NULL : p->string);
993}
994
995void
996ERR_remove_thread_state(const CRYPTO_THREADID *id)
997{
998 ERR_STATE tmp;
999
1000 if (id)
1001 CRYPTO_THREADID_cpy(&tmp.tid, id);
1002 else
1003 CRYPTO_THREADID_current(&tmp.tid);
1004 err_fns_check();
1005 /* thread_del_item automatically destroys the LHASH if the number of
1006 * items reaches zero. */
1007 ERRFN(thread_del_item)(&tmp);
1008}
1009
1010#ifndef OPENSSL_NO_DEPRECATED
1011void
1012ERR_remove_state(unsigned long pid)
1013{
1014 ERR_remove_thread_state(NULL);
1015}
1016#endif
1017
1018ERR_STATE *
1019ERR_get_state(void)
1020{
1021 static ERR_STATE fallback;
1022 ERR_STATE *ret, tmp, *tmpp = NULL;
1023 int i;
1024 CRYPTO_THREADID tid;
1025
1026 err_fns_check();
1027 CRYPTO_THREADID_current(&tid);
1028 CRYPTO_THREADID_cpy(&tmp.tid, &tid);
1029 ret = ERRFN(thread_get_item)(&tmp);
1030
1031 /* ret == the error state, if NULL, make a new one */
1032 if (ret == NULL) {
1033 ret = malloc(sizeof(ERR_STATE));
1034 if (ret == NULL)
1035 return (&fallback);
1036 CRYPTO_THREADID_cpy(&ret->tid, &tid);
1037 ret->top = 0;
1038 ret->bottom = 0;
1039 for (i = 0; i < ERR_NUM_ERRORS; i++) {
1040 ret->err_data[i] = NULL;
1041 ret->err_data_flags[i] = 0;
1042 }
1043 tmpp = ERRFN(thread_set_item)(ret);
1044 /* To check if insertion failed, do a get. */
1045 if (ERRFN(thread_get_item)(ret) != ret) {
1046 ERR_STATE_free(ret); /* could not insert it */
1047 return (&fallback);
1048 }
1049 /* If a race occured in this function and we came second, tmpp
1050 * is the first one that we just replaced. */
1051 if (tmpp)
1052 ERR_STATE_free(tmpp);
1053 }
1054 return ret;
1055}
1056
1057int
1058ERR_get_next_error_library(void)
1059{
1060 err_fns_check();
1061 return ERRFN(get_next_lib)();
1062}
1063
1064void
1065ERR_set_error_data(char *data, int flags)
1066{
1067 ERR_STATE *es;
1068 int i;
1069
1070 es = ERR_get_state();
1071
1072 i = es->top;
1073 if (i == 0)
1074 i = ERR_NUM_ERRORS - 1;
1075
1076 err_clear_data(es, i);
1077 es->err_data[i] = data;
1078 es->err_data_flags[i] = flags;
1079}
1080
1081void
1082ERR_asprintf_error_data(char * format, ...) {
1083 char *errbuf = NULL;
1084 va_list ap;
1085 int r;
1086
1087 va_start(ap, format);
1088 r = vasprintf(&errbuf, format, ap);
1089 va_end(ap);
1090 if (r == -1)
1091 ERR_set_error_data("malloc failed", ERR_TXT_STRING);
1092 else
1093 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING);
1094}
1095void
1096ERR_add_error_data(int num, ...)
1097{
1098 va_list args;
1099 va_start(args, num);
1100 ERR_add_error_vdata(num, args);
1101 va_end(args);
1102}
1103
1104void
1105ERR_add_error_vdata(int num, va_list args)
1106{
1107 char format[129];
1108 char *errbuf;
1109 int i;
1110
1111 format[0] = '\0';
1112 for (i = 0; i < num; i++) {
1113 if (strlcat(format, "%s", sizeof(format)) >= sizeof(format)) {
1114 ERR_set_error_data("too many errors", ERR_TXT_STRING);
1115 return;
1116 }
1117 }
1118 if (vasprintf(&errbuf, format, args) == -1)
1119 ERR_set_error_data("malloc failed", ERR_TXT_STRING);
1120 else
1121 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING);
1122}
1123
1124int
1125ERR_set_mark(void)
1126{
1127 ERR_STATE *es;
1128
1129 es = ERR_get_state();
1130
1131 if (es->bottom == es->top)
1132 return 0;
1133 es->err_flags[es->top] |= ERR_FLAG_MARK;
1134 return 1;
1135}
1136
1137int
1138ERR_pop_to_mark(void)
1139{
1140 ERR_STATE *es;
1141
1142 es = ERR_get_state();
1143
1144 while (es->bottom != es->top &&
1145 (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
1146 err_clear(es, es->top);
1147 es->top -= 1;
1148 if (es->top == -1)
1149 es->top = ERR_NUM_ERRORS - 1;
1150 }
1151
1152 if (es->bottom == es->top)
1153 return 0;
1154 es->err_flags[es->top]&=~ERR_FLAG_MARK;
1155 return 1;
1156}
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-11-23 09:28:15 +0000