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1/* $OpenBSD: err.c,v 1.52 2023/04/09 19:10:23 tb 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 <pthread.h>
113#include <stdarg.h>
114#include <stdio.h>
115#include <string.h>
116
117#include <openssl/opensslconf.h>
118
119#include <openssl/bio.h>
120#include <openssl/buffer.h>
121#include <openssl/crypto.h>
122#include <openssl/err.h>
123#include <openssl/lhash.h>
124
125DECLARE_LHASH_OF(ERR_STRING_DATA);
126DECLARE_LHASH_OF(ERR_STATE);
127
128static void err_load_strings(int lib, ERR_STRING_DATA *str);
129
130static void ERR_STATE_free(ERR_STATE *s);
131#ifndef OPENSSL_NO_ERR
132static ERR_STRING_DATA ERR_str_libraries[] = {
133 {ERR_PACK(ERR_LIB_NONE,0,0), "unknown library"},
134 {ERR_PACK(ERR_LIB_SYS,0,0), "system library"},
135 {ERR_PACK(ERR_LIB_BN,0,0), "bignum routines"},
136 {ERR_PACK(ERR_LIB_RSA,0,0), "rsa routines"},
137 {ERR_PACK(ERR_LIB_DH,0,0), "Diffie-Hellman routines"},
138 {ERR_PACK(ERR_LIB_EVP,0,0), "digital envelope routines"},
139 {ERR_PACK(ERR_LIB_BUF,0,0), "memory buffer routines"},
140 {ERR_PACK(ERR_LIB_OBJ,0,0), "object identifier routines"},
141 {ERR_PACK(ERR_LIB_PEM,0,0), "PEM routines"},
142 {ERR_PACK(ERR_LIB_DSA,0,0), "dsa routines"},
143 {ERR_PACK(ERR_LIB_X509,0,0), "x509 certificate routines"},
144 {ERR_PACK(ERR_LIB_ASN1,0,0), "asn1 encoding routines"},
145 {ERR_PACK(ERR_LIB_CONF,0,0), "configuration file routines"},
146 {ERR_PACK(ERR_LIB_CRYPTO,0,0), "common libcrypto routines"},
147 {ERR_PACK(ERR_LIB_EC,0,0), "elliptic curve routines"},
148 {ERR_PACK(ERR_LIB_SSL,0,0), "SSL routines"},
149 {ERR_PACK(ERR_LIB_BIO,0,0), "BIO routines"},
150 {ERR_PACK(ERR_LIB_PKCS7,0,0), "PKCS7 routines"},
151 {ERR_PACK(ERR_LIB_X509V3,0,0), "X509 V3 routines"},
152 {ERR_PACK(ERR_LIB_PKCS12,0,0), "PKCS12 routines"},
153 {ERR_PACK(ERR_LIB_RAND,0,0), "random number generator"},
154 {ERR_PACK(ERR_LIB_DSO,0,0), "DSO support routines"},
155 {ERR_PACK(ERR_LIB_TS,0,0), "time stamp routines"},
156 {ERR_PACK(ERR_LIB_ENGINE,0,0), "engine routines"},
157 {ERR_PACK(ERR_LIB_OCSP,0,0), "OCSP routines"},
158 {ERR_PACK(ERR_LIB_FIPS,0,0), "FIPS routines"},
159 {ERR_PACK(ERR_LIB_CMS,0,0), "CMS routines"},
160 {ERR_PACK(ERR_LIB_HMAC,0,0), "HMAC routines"},
161 {ERR_PACK(ERR_LIB_GOST,0,0), "GOST routines"},
162 {0, NULL},
163};
164
165static ERR_STRING_DATA ERR_str_functs[] = {
166 {ERR_PACK(0,SYS_F_FOPEN, 0), "fopen"},
167 {ERR_PACK(0,SYS_F_CONNECT, 0), "connect"},
168 {ERR_PACK(0,SYS_F_GETSERVBYNAME, 0), "getservbyname"},
169 {ERR_PACK(0,SYS_F_SOCKET, 0), "socket"},
170 {ERR_PACK(0,SYS_F_IOCTLSOCKET, 0), "ioctl"},
171 {ERR_PACK(0,SYS_F_BIND, 0), "bind"},
172 {ERR_PACK(0,SYS_F_LISTEN, 0), "listen"},
173 {ERR_PACK(0,SYS_F_ACCEPT, 0), "accept"},
174 {ERR_PACK(0,SYS_F_OPENDIR, 0), "opendir"},
175 {ERR_PACK(0,SYS_F_FREAD, 0), "fread"},
176 {0, NULL},
177};
178
179static ERR_STRING_DATA ERR_str_reasons[] = {
180 {ERR_R_SYS_LIB, "system lib"},
181 {ERR_R_BN_LIB, "BN lib"},
182 {ERR_R_RSA_LIB, "RSA lib"},
183 {ERR_R_DH_LIB, "DH lib"},
184 {ERR_R_EVP_LIB, "EVP lib"},
185 {ERR_R_BUF_LIB, "BUF lib"},
186 {ERR_R_OBJ_LIB, "OBJ lib"},
187 {ERR_R_PEM_LIB, "PEM lib"},
188 {ERR_R_DSA_LIB, "DSA lib"},
189 {ERR_R_X509_LIB, "X509 lib"},
190 {ERR_R_ASN1_LIB, "ASN1 lib"},
191 {ERR_R_CONF_LIB, "CONF lib"},
192 {ERR_R_CRYPTO_LIB, "CRYPTO lib"},
193 {ERR_R_EC_LIB, "EC lib"},
194 {ERR_R_SSL_LIB, "SSL lib"},
195 {ERR_R_BIO_LIB, "BIO lib"},
196 {ERR_R_PKCS7_LIB, "PKCS7 lib"},
197 {ERR_R_X509V3_LIB, "X509V3 lib"},
198 {ERR_R_PKCS12_LIB, "PKCS12 lib"},
199 {ERR_R_RAND_LIB, "RAND lib"},
200 {ERR_R_DSO_LIB, "DSO lib"},
201 {ERR_R_ENGINE_LIB, "ENGINE lib"},
202 {ERR_R_OCSP_LIB, "OCSP lib"},
203 {ERR_R_TS_LIB, "TS lib"},
204
205 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"},
206 {ERR_R_BAD_ASN1_OBJECT_HEADER, "bad asn1 object header"},
207 {ERR_R_BAD_GET_ASN1_OBJECT_CALL, "bad get asn1 object call"},
208 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE, "expecting an asn1 sequence"},
209 {ERR_R_ASN1_LENGTH_MISMATCH, "asn1 length mismatch"},
210 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"},
211
212 {ERR_R_FATAL, "fatal"},
213 {ERR_R_MALLOC_FAILURE, "malloc failure"},
214 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, "called a function you should not call"},
215 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"},
216 {ERR_R_INTERNAL_ERROR, "internal error"},
217 {ERR_R_DISABLED , "called a function that was disabled at compile-time"},
218 {ERR_R_INIT_FAIL, "initialization failure"},
219
220 {0, NULL},
221};
222#endif
223
224
225/* Define the predeclared (but externally opaque) "ERR_FNS" type */
226struct st_ERR_FNS {
227 /* Works on the "error_hash" string table */
228 LHASH_OF(ERR_STRING_DATA) *(*cb_err_get)(int create);
229 void (*cb_err_del)(void);
230 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *);
231 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *);
232 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *);
233 /* Works on the "thread_hash" error-state table */
234 LHASH_OF(ERR_STATE) *(*cb_thread_get)(int create);
235 void (*cb_thread_release)(LHASH_OF(ERR_STATE) **hash);
236 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *);
237 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *);
238 void (*cb_thread_del_item)(const ERR_STATE *);
239 /* Returns the next available error "library" numbers */
240 int (*cb_get_next_lib)(void);
241};
242
243/* Predeclarations of the "err_defaults" functions */
244static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create);
245static void int_err_del(void);
246static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
247static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *);
248static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *);
249static LHASH_OF(ERR_STATE) *int_thread_get(int create);
250static void int_thread_release(LHASH_OF(ERR_STATE) **hash);
251static ERR_STATE *int_thread_get_item(const ERR_STATE *);
252static ERR_STATE *int_thread_set_item(ERR_STATE *);
253static void int_thread_del_item(const ERR_STATE *);
254static int int_err_get_next_lib(void);
255
256/* The static ERR_FNS table using these defaults functions */
257static const ERR_FNS err_defaults = {
258 int_err_get,
259 int_err_del,
260 int_err_get_item,
261 int_err_set_item,
262 int_err_del_item,
263 int_thread_get,
264 int_thread_release,
265 int_thread_get_item,
266 int_thread_set_item,
267 int_thread_del_item,
268 int_err_get_next_lib
269};
270
271/* The replacable table of ERR_FNS functions we use at run-time */
272static const ERR_FNS *err_fns = NULL;
273
274/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */
275#define ERRFN(a) err_fns->cb_##a
276
277/* The internal state used by "err_defaults" - as such, the setting, reading,
278 * creating, and deleting of this data should only be permitted via the
279 * "err_defaults" functions. This way, a linked module can completely defer all
280 * ERR state operation (together with requisite locking) to the implementations
281 * and state in the loading application. */
282static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
283static LHASH_OF(ERR_STATE) *int_thread_hash = NULL;
284static int int_thread_hash_references = 0;
285static int int_err_library_number = ERR_LIB_USER;
286
287static pthread_t err_init_thread;
288
289/* Internal function that checks whether "err_fns" is set and if not, sets it to
290 * the defaults. */
291static void
292err_fns_check(void)
293{
294 if (err_fns)
295 return;
296
297 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
298 if (!err_fns)
299 err_fns = &err_defaults;
300 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
301}
302
303/* API functions to get or set the underlying ERR functions. */
304
305const ERR_FNS *
306ERR_get_implementation(void)
307{
308 err_fns_check();
309 return err_fns;
310}
311
312int
313ERR_set_implementation(const ERR_FNS *fns)
314{
315 int ret = 0;
316
317 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
318 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting
319 * an error is there?! */
320 if (!err_fns) {
321 err_fns = fns;
322 ret = 1;
323 }
324 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
325 return ret;
326}
327
328/* These are the callbacks provided to "lh_new()" when creating the LHASH tables
329 * internal to the "err_defaults" implementation. */
330
331static unsigned long get_error_values(int inc, int top, const char **file,
332 int *line, const char **data, int *flags);
333
334/* The internal functions used in the "err_defaults" implementation */
335
336static unsigned long
337err_string_data_hash(const ERR_STRING_DATA *a)
338{
339 unsigned long ret, l;
340
341 l = a->error;
342 ret = l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
343 return (ret^ret % 19*13);
344}
345static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA)
346
347static int
348err_string_data_cmp(const ERR_STRING_DATA *a, const ERR_STRING_DATA *b)
349{
350 return (int)(a->error - b->error);
351}
352static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA)
353
354static
355LHASH_OF(ERR_STRING_DATA) *int_err_get(int create)
356{
357 LHASH_OF(ERR_STRING_DATA) *ret = NULL;
358
359 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
360 if (!int_error_hash && create) {
361 CRYPTO_push_info("int_err_get (err.c)");
362 int_error_hash = lh_ERR_STRING_DATA_new();
363 CRYPTO_pop_info();
364 }
365 if (int_error_hash)
366 ret = int_error_hash;
367 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
368
369 return ret;
370}
371
372static void
373int_err_del(void)
374{
375 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
376 if (int_error_hash) {
377 lh_ERR_STRING_DATA_free(int_error_hash);
378 int_error_hash = NULL;
379 }
380 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
381}
382
383static ERR_STRING_DATA *
384int_err_get_item(const ERR_STRING_DATA *d)
385{
386 ERR_STRING_DATA *p;
387 LHASH_OF(ERR_STRING_DATA) *hash;
388
389 err_fns_check();
390 hash = ERRFN(err_get)(0);
391 if (!hash)
392 return NULL;
393
394 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
395 p = lh_ERR_STRING_DATA_retrieve(hash, d);
396 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
397
398 return p;
399}
400
401static ERR_STRING_DATA *
402int_err_set_item(ERR_STRING_DATA *d)
403{
404 ERR_STRING_DATA *p;
405 LHASH_OF(ERR_STRING_DATA) *hash;
406
407 err_fns_check();
408 hash = ERRFN(err_get)(1);
409 if (!hash)
410 return NULL;
411
412 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
413 p = lh_ERR_STRING_DATA_insert(hash, d);
414 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
415
416 return p;
417}
418
419static ERR_STRING_DATA *
420int_err_del_item(ERR_STRING_DATA *d)
421{
422 ERR_STRING_DATA *p;
423 LHASH_OF(ERR_STRING_DATA) *hash;
424
425 err_fns_check();
426 hash = ERRFN(err_get)(0);
427 if (!hash)
428 return NULL;
429
430 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
431 p = lh_ERR_STRING_DATA_delete(hash, d);
432 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
433
434 return p;
435}
436
437static unsigned long
438err_state_hash(const ERR_STATE *a)
439{
440 return CRYPTO_THREADID_hash(&a->tid) * 13;
441}
442static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE)
443
444static int
445err_state_cmp(const ERR_STATE *a, const ERR_STATE *b)
446{
447 return CRYPTO_THREADID_cmp(&a->tid, &b->tid);
448}
449static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE)
450
451static
452LHASH_OF(ERR_STATE) *int_thread_get(int create)
453{
454 LHASH_OF(ERR_STATE) *ret = NULL;
455
456 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
457 if (!int_thread_hash && create) {
458 CRYPTO_push_info("int_thread_get (err.c)");
459 int_thread_hash = lh_ERR_STATE_new();
460 CRYPTO_pop_info();
461 }
462 if (int_thread_hash) {
463 int_thread_hash_references++;
464 ret = int_thread_hash;
465 }
466 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
467 return ret;
468}
469
470static void
471int_thread_release(LHASH_OF(ERR_STATE) **hash)
472{
473 int i;
474
475 if (hash == NULL || *hash == NULL)
476 return;
477
478 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR);
479 if (i > 0)
480 return;
481
482 *hash = NULL;
483}
484
485static ERR_STATE *
486int_thread_get_item(const ERR_STATE *d)
487{
488 ERR_STATE *p;
489 LHASH_OF(ERR_STATE) *hash;
490
491 err_fns_check();
492 hash = ERRFN(thread_get)(0);
493 if (!hash)
494 return NULL;
495
496 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
497 p = lh_ERR_STATE_retrieve(hash, d);
498 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
499
500 ERRFN(thread_release)(&hash);
501 return p;
502}
503
504static ERR_STATE *
505int_thread_set_item(ERR_STATE *d)
506{
507 ERR_STATE *p;
508 LHASH_OF(ERR_STATE) *hash;
509
510 err_fns_check();
511 hash = ERRFN(thread_get)(1);
512 if (!hash)
513 return NULL;
514
515 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
516 p = lh_ERR_STATE_insert(hash, d);
517 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
518
519 ERRFN(thread_release)(&hash);
520 return p;
521}
522
523static void
524int_thread_del_item(const ERR_STATE *d)
525{
526 ERR_STATE *p;
527 LHASH_OF(ERR_STATE) *hash;
528
529 err_fns_check();
530 hash = ERRFN(thread_get)(0);
531 if (!hash)
532 return;
533
534 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
535 p = lh_ERR_STATE_delete(hash, d);
536 /* make sure we don't leak memory */
537 if (int_thread_hash_references == 1 &&
538 int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) {
539 lh_ERR_STATE_free(int_thread_hash);
540 int_thread_hash = NULL;
541 }
542 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
543
544 ERRFN(thread_release)(&hash);
545 if (p)
546 ERR_STATE_free(p);
547}
548
549static int
550int_err_get_next_lib(void)
551{
552 int ret;
553
554 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
555 ret = int_err_library_number++;
556 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
557
558 return ret;
559}
560
561
562#ifndef OPENSSL_NO_ERR
563#define NUM_SYS_STR_REASONS 127
564#define LEN_SYS_STR_REASON 32
565
566static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
567/* SYS_str_reasons is filled with copies of strerror() results at
568 * initialization.
569 * 'errno' values up to 127 should cover all usual errors,
570 * others will be displayed numerically by ERR_error_string.
571 * It is crucial that we have something for each reason code
572 * that occurs in ERR_str_reasons, or bogus reason strings
573 * will be returned for SYSerror(which always gets an errno
574 * value and never one of those 'standard' reason codes. */
575
576static void
577build_SYS_str_reasons(void)
578{
579 /* malloc cannot be used here, use static storage instead */
580 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
581 int i;
582 static int init = 1;
583 int save_errno;
584
585 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
586 if (!init) {
587 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
588 return;
589 }
590
591 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
592 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
593 if (!init) {
594 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
595 return;
596 }
597
598 /* strerror(3) will set errno to EINVAL when i is an unknown errno. */
599 save_errno = errno;
600 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) {
601 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
602
603 str->error = (unsigned long)i;
604 if (str->string == NULL) {
605 char (*dest)[LEN_SYS_STR_REASON] =
606 &(strerror_tab[i - 1]);
607 const char *src = strerror(i);
608 if (src != NULL) {
609 strlcpy(*dest, src, sizeof *dest);
610 str->string = *dest;
611 }
612 }
613 if (str->string == NULL)
614 str->string = "unknown";
615 }
616 errno = save_errno;
617
618 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL},
619 * as required by ERR_load_strings. */
620
621 init = 0;
622
623 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
624}
625#endif
626
627#define err_clear_data(p,i) \
628 do { \
629 if (((p)->err_data[i] != NULL) && \
630 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) { \
631 free((p)->err_data[i]); \
632 (p)->err_data[i] = NULL; \
633 } \
634 (p)->err_data_flags[i] = 0; \
635 } while(0)
636
637#define err_clear(p,i) \
638 do { \
639 (p)->err_flags[i] = 0; \
640 (p)->err_buffer[i] = 0; \
641 err_clear_data(p, i); \
642 (p)->err_file[i] = NULL; \
643 (p)->err_line[i] = -1; \
644 } while(0)
645
646static void
647ERR_STATE_free(ERR_STATE *s)
648{
649 int i;
650
651 if (s == NULL)
652 return;
653
654 for (i = 0; i < ERR_NUM_ERRORS; i++) {
655 err_clear_data(s, i);
656 }
657 free(s);
658}
659
660void
661ERR_load_ERR_strings_internal(void)
662{
663 err_init_thread = pthread_self();
664 err_fns_check();
665#ifndef OPENSSL_NO_ERR
666 err_load_strings(0, ERR_str_libraries);
667 err_load_strings(0, ERR_str_reasons);
668 err_load_strings(ERR_LIB_SYS, ERR_str_functs);
669 build_SYS_str_reasons();
670 err_load_strings(ERR_LIB_SYS, SYS_str_reasons);
671#endif
672}
673
674
675void
676ERR_load_ERR_strings(void)
677{
678 static pthread_once_t once = PTHREAD_ONCE_INIT;
679
680 if (pthread_equal(pthread_self(), err_init_thread))
681 return; /* don't recurse */
682
683 /* Prayer and clean living lets you ignore errors, OpenSSL style */
684 (void) OPENSSL_init_crypto(0, NULL);
685
686 (void) pthread_once(&once, ERR_load_ERR_strings_internal);
687}
688
689static void
690err_load_strings(int lib, ERR_STRING_DATA *str)
691{
692 while (str->error) {
693 if (lib)
694 str->error |= ERR_PACK(lib, 0, 0);
695 ERRFN(err_set_item)(str);
696 str++;
697 }
698}
699
700void
701ERR_load_strings(int lib, ERR_STRING_DATA *str)
702{
703 ERR_load_ERR_strings();
704 err_load_strings(lib, str);
705}
706
707void
708ERR_unload_strings(int lib, ERR_STRING_DATA *str)
709{
710 /* Prayer and clean living lets you ignore errors, OpenSSL style */
711 (void) OPENSSL_init_crypto(0, NULL);
712
713 while (str->error) {
714 if (lib)
715 str->error |= ERR_PACK(lib, 0, 0);
716 ERRFN(err_del_item)(str);
717 str++;
718 }
719}
720
721void
722ERR_free_strings(void)
723{
724 /* Prayer and clean living lets you ignore errors, OpenSSL style */
725 (void) OPENSSL_init_crypto(0, NULL);
726
727 err_fns_check();
728 ERRFN(err_del)();
729}
730
731/********************************************************/
732
733void
734ERR_put_error(int lib, int func, int reason, const char *file, int line)
735{
736 ERR_STATE *es;
737 int save_errno = errno;
738
739 es = ERR_get_state();
740
741 es->top = (es->top + 1) % ERR_NUM_ERRORS;
742 if (es->top == es->bottom)
743 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS;
744 es->err_flags[es->top] = 0;
745 es->err_buffer[es->top] = ERR_PACK(lib, func, reason);
746 es->err_file[es->top] = file;
747 es->err_line[es->top] = line;
748 err_clear_data(es, es->top);
749 errno = save_errno;
750}
751
752void
753ERR_clear_error(void)
754{
755 int i;
756 ERR_STATE *es;
757
758 es = ERR_get_state();
759
760 for (i = 0; i < ERR_NUM_ERRORS; i++) {
761 err_clear(es, i);
762 }
763 es->top = es->bottom = 0;
764}
765
766
767unsigned long
768ERR_get_error(void)
769{
770 return (get_error_values(1, 0, NULL, NULL, NULL, NULL));
771}
772
773unsigned long
774ERR_get_error_line(const char **file, int *line)
775{
776 return (get_error_values(1, 0, file, line, NULL, NULL));
777}
778
779unsigned long
780ERR_get_error_line_data(const char **file, int *line,
781 const char **data, int *flags)
782{
783 return (get_error_values(1, 0, file, line, data, flags));
784}
785
786
787unsigned long
788ERR_peek_error(void)
789{
790 return (get_error_values(0, 0, NULL, NULL, NULL, NULL));
791}
792
793unsigned long
794ERR_peek_error_line(const char **file, int *line)
795{
796 return (get_error_values(0, 0, file, line, NULL, NULL));
797}
798
799unsigned long
800ERR_peek_error_line_data(const char **file, int *line,
801 const char **data, int *flags)
802{
803 return (get_error_values(0, 0, file, line, data, flags));
804}
805
806unsigned long
807ERR_peek_last_error(void)
808{
809 return (get_error_values(0, 1, NULL, NULL, NULL, NULL));
810}
811
812unsigned long
813ERR_peek_last_error_line(const char **file, int *line)
814{
815 return (get_error_values(0, 1, file, line, NULL, NULL));
816}
817
818unsigned long
819ERR_peek_last_error_line_data(const char **file, int *line,
820 const char **data, int *flags)
821{
822 return (get_error_values(0, 1, file, line, data, flags));
823}
824
825static unsigned long
826get_error_values(int inc, int top, const char **file, int *line,
827 const char **data, int *flags)
828{
829 int i = 0;
830 ERR_STATE *es;
831 unsigned long ret;
832
833 es = ERR_get_state();
834
835 if (inc && top) {
836 if (file)
837 *file = "";
838 if (line)
839 *line = 0;
840 if (data)
841 *data = "";
842 if (flags)
843 *flags = 0;
844
845 return ERR_R_INTERNAL_ERROR;
846 }
847
848 if (es->bottom == es->top)
849 return 0;
850 if (top)
851 i = es->top; /* last error */
852 else
853 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */
854
855 ret = es->err_buffer[i];
856 if (inc) {
857 es->bottom = i;
858 es->err_buffer[i] = 0;
859 }
860
861 if ((file != NULL) && (line != NULL)) {
862 if (es->err_file[i] == NULL) {
863 *file = "NA";
864 if (line != NULL)
865 *line = 0;
866 } else {
867 *file = es->err_file[i];
868 if (line != NULL)
869 *line = es->err_line[i];
870 }
871 }
872
873 if (data == NULL) {
874 if (inc) {
875 err_clear_data(es, i);
876 }
877 } else {
878 if (es->err_data[i] == NULL) {
879 *data = "";
880 if (flags != NULL)
881 *flags = 0;
882 } else {
883 *data = es->err_data[i];
884 if (flags != NULL)
885 *flags = es->err_data_flags[i];
886 }
887 }
888 return ret;
889}
890
891void
892ERR_error_string_n(unsigned long e, char *buf, size_t len)
893{
894 char lsbuf[30], fsbuf[30], rsbuf[30];
895 const char *ls, *fs, *rs;
896 int l, f, r, ret;
897
898 l = ERR_GET_LIB(e);
899 f = ERR_GET_FUNC(e);
900 r = ERR_GET_REASON(e);
901
902 ls = ERR_lib_error_string(e);
903 fs = ERR_func_error_string(e);
904 rs = ERR_reason_error_string(e);
905
906 if (ls == NULL) {
907 (void) snprintf(lsbuf, sizeof(lsbuf), "lib(%d)", l);
908 ls = lsbuf;
909 }
910 if (fs == NULL) {
911 (void) snprintf(fsbuf, sizeof(fsbuf), "func(%d)", f);
912 fs = fsbuf;
913 }
914 if (rs == NULL) {
915 (void) snprintf(rsbuf, sizeof(rsbuf), "reason(%d)", r);
916 rs = rsbuf;
917 }
918
919 ret = snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs);
920 if (ret == -1)
921 return; /* can't happen, and can't do better if it does */
922 if (ret >= len) {
923 /* output may be truncated; make sure we always have 5
924 * colon-separated fields, i.e. 4 colons ... */
925#define NUM_COLONS 4
926 if (len > NUM_COLONS) /* ... if possible */
927 {
928 int i;
929 char *s = buf;
930
931 for (i = 0; i < NUM_COLONS; i++) {
932 char *colon = strchr(s, ':');
933 if (colon == NULL ||
934 colon > &buf[len - 1] - NUM_COLONS + i) {
935 /* set colon no. i at last possible position
936 * (buf[len-1] is the terminating 0)*/
937 colon = &buf[len - 1] - NUM_COLONS + i;
938 *colon = ':';
939 }
940 s = colon + 1;
941 }
942 }
943 }
944}
945
946/* BAD for multi-threading: uses a local buffer if ret == NULL */
947/* ERR_error_string_n should be used instead for ret != NULL
948 * as ERR_error_string cannot know how large the buffer is */
949char *
950ERR_error_string(unsigned long e, char *ret)
951{
952 static char buf[256];
953
954 if (ret == NULL)
955 ret = buf;
956 ERR_error_string_n(e, ret, 256);
957
958 return ret;
959}
960
961LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void)
962{
963 err_fns_check();
964 return ERRFN(err_get)(0);
965}
966
967LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void)
968{
969 err_fns_check();
970 return ERRFN(thread_get)(0);
971}
972
973void
974ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash)
975{
976 err_fns_check();
977 ERRFN(thread_release)(hash);
978}
979
980const char *
981ERR_lib_error_string(unsigned long e)
982{
983 ERR_STRING_DATA d, *p;
984 unsigned long l;
985
986 if (!OPENSSL_init_crypto(0, NULL))
987 return NULL;
988
989 err_fns_check();
990 l = ERR_GET_LIB(e);
991 d.error = ERR_PACK(l, 0, 0);
992 p = ERRFN(err_get_item)(&d);
993 return ((p == NULL) ? NULL : p->string);
994}
995
996const char *
997ERR_func_error_string(unsigned long e)
998{
999 ERR_STRING_DATA d, *p;
1000 unsigned long l, f;
1001
1002 err_fns_check();
1003 l = ERR_GET_LIB(e);
1004 f = ERR_GET_FUNC(e);
1005 d.error = ERR_PACK(l, f, 0);
1006 p = ERRFN(err_get_item)(&d);
1007 return ((p == NULL) ? NULL : p->string);
1008}
1009
1010const char *
1011ERR_reason_error_string(unsigned long e)
1012{
1013 ERR_STRING_DATA d, *p = NULL;
1014 unsigned long l, r;
1015
1016 err_fns_check();
1017 l = ERR_GET_LIB(e);
1018 r = ERR_GET_REASON(e);
1019 d.error = ERR_PACK(l, 0, r);
1020 p = ERRFN(err_get_item)(&d);
1021 if (!p) {
1022 d.error = ERR_PACK(0, 0, r);
1023 p = ERRFN(err_get_item)(&d);
1024 }
1025 return ((p == NULL) ? NULL : p->string);
1026}
1027
1028void
1029ERR_remove_thread_state(const CRYPTO_THREADID *id)
1030{
1031 ERR_STATE tmp;
1032
1033 if (id)
1034 CRYPTO_THREADID_cpy(&tmp.tid, id);
1035 else
1036 CRYPTO_THREADID_current(&tmp.tid);
1037 err_fns_check();
1038 /* thread_del_item automatically destroys the LHASH if the number of
1039 * items reaches zero. */
1040 ERRFN(thread_del_item)(&tmp);
1041}
1042
1043void
1044ERR_remove_state(unsigned long pid)
1045{
1046 ERR_remove_thread_state(NULL);
1047}
1048
1049ERR_STATE *
1050ERR_get_state(void)
1051{
1052 static ERR_STATE fallback;
1053 ERR_STATE *ret, tmp, *tmpp = NULL;
1054 int i;
1055 CRYPTO_THREADID tid;
1056
1057 err_fns_check();
1058 CRYPTO_THREADID_current(&tid);
1059 CRYPTO_THREADID_cpy(&tmp.tid, &tid);
1060 ret = ERRFN(thread_get_item)(&tmp);
1061
1062 /* ret == the error state, if NULL, make a new one */
1063 if (ret == NULL) {
1064 ret = malloc(sizeof(ERR_STATE));
1065 if (ret == NULL)
1066 return (&fallback);
1067 CRYPTO_THREADID_cpy(&ret->tid, &tid);
1068 ret->top = 0;
1069 ret->bottom = 0;
1070 for (i = 0; i < ERR_NUM_ERRORS; i++) {
1071 ret->err_data[i] = NULL;
1072 ret->err_data_flags[i] = 0;
1073 }
1074 tmpp = ERRFN(thread_set_item)(ret);
1075 /* To check if insertion failed, do a get. */
1076 if (ERRFN(thread_get_item)(ret) != ret) {
1077 ERR_STATE_free(ret); /* could not insert it */
1078 return (&fallback);
1079 }
1080 /* If a race occurred in this function and we came second, tmpp
1081 * is the first one that we just replaced. */
1082 if (tmpp)
1083 ERR_STATE_free(tmpp);
1084 }
1085 return ret;
1086}
1087
1088int
1089ERR_get_next_error_library(void)
1090{
1091 err_fns_check();
1092 return ERRFN(get_next_lib)();
1093}
1094
1095void
1096ERR_set_error_data(char *data, int flags)
1097{
1098 ERR_STATE *es;
1099 int i;
1100
1101 es = ERR_get_state();
1102
1103 i = es->top;
1104 if (i == 0)
1105 i = ERR_NUM_ERRORS - 1;
1106
1107 err_clear_data(es, i);
1108 es->err_data[i] = data;
1109 es->err_data_flags[i] = flags;
1110}
1111
1112void
1113ERR_asprintf_error_data(char * format, ...)
1114{
1115 char *errbuf = NULL;
1116 va_list ap;
1117 int r;
1118
1119 va_start(ap, format);
1120 r = vasprintf(&errbuf, format, ap);
1121 va_end(ap);
1122 if (r == -1)
1123 ERR_set_error_data("malloc failed", ERR_TXT_STRING);
1124 else
1125 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING);
1126}
1127
1128void
1129ERR_add_error_vdata(int num, va_list args)
1130{
1131 char format[129];
1132 char *errbuf;
1133 int i;
1134
1135 format[0] = '\0';
1136 for (i = 0; i < num; i++) {
1137 if (strlcat(format, "%s", sizeof(format)) >= sizeof(format)) {
1138 ERR_set_error_data("too many errors", ERR_TXT_STRING);
1139 return;
1140 }
1141 }
1142 if (vasprintf(&errbuf, format, args) == -1)
1143 ERR_set_error_data("malloc failed", ERR_TXT_STRING);
1144 else
1145 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING);
1146}
1147
1148void
1149ERR_add_error_data(int num, ...)
1150{
1151 va_list args;
1152 va_start(args, num);
1153 ERR_add_error_vdata(num, args);
1154 va_end(args);
1155}
1156
1157int
1158ERR_set_mark(void)
1159{
1160 ERR_STATE *es;
1161
1162 es = ERR_get_state();
1163
1164 if (es->bottom == es->top)
1165 return 0;
1166 es->err_flags[es->top] |= ERR_FLAG_MARK;
1167 return 1;
1168}
1169
1170int
1171ERR_pop_to_mark(void)
1172{
1173 ERR_STATE *es;
1174
1175 es = ERR_get_state();
1176
1177 while (es->bottom != es->top &&
1178 (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
1179 err_clear(es, es->top);
1180 es->top -= 1;
1181 if (es->top == -1)
1182 es->top = ERR_NUM_ERRORS - 1;
1183 }
1184
1185 if (es->bottom == es->top)
1186 return 0;
1187 es->err_flags[es->top]&=~ERR_FLAG_MARK;
1188 return 1;
1189}
1190
1191void
1192err_clear_last_constant_time(int clear)
1193{
1194 ERR_STATE *es;
1195 int top;
1196
1197 es = ERR_get_state();
1198 if (es == NULL)
1199 return;
1200
1201 top = es->top;
1202
1203 es->err_flags[top] &= ~(0 - clear);
1204 es->err_buffer[top] &= ~(0UL - clear);
1205 es->err_file[top] = (const char *)((uintptr_t)es->err_file[top] &
1206 ~((uintptr_t)0 - clear));
1207 es->err_line[top] |= 0 - clear;
1208
1209 es->top = (top + ERR_NUM_ERRORS - clear) % ERR_NUM_ERRORS;
1210}
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