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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) 1998-2001 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111
112#include <stdio.h>
113#include <stdarg.h>
114#include <string.h>
115#include "cryptlib.h"
116#include <openssl/lhash.h>
117#include <openssl/crypto.h>
118#include <openssl/buffer.h>
119#include <openssl/bio.h>
120#include <openssl/err.h>
121
122static void err_load_strings(int lib, ERR_STRING_DATA *str);
123
124static void ERR_STATE_free(ERR_STATE *s);
125#ifndef OPENSSL_NO_ERR
126static ERR_STRING_DATA ERR_str_libraries[]=
127 {
128{ERR_PACK(ERR_LIB_NONE,0,0) ,"unknown library"},
129{ERR_PACK(ERR_LIB_SYS,0,0) ,"system library"},
130{ERR_PACK(ERR_LIB_BN,0,0) ,"bignum routines"},
131{ERR_PACK(ERR_LIB_RSA,0,0) ,"rsa routines"},
132{ERR_PACK(ERR_LIB_DH,0,0) ,"Diffie-Hellman routines"},
133{ERR_PACK(ERR_LIB_EVP,0,0) ,"digital envelope routines"},
134{ERR_PACK(ERR_LIB_BUF,0,0) ,"memory buffer routines"},
135{ERR_PACK(ERR_LIB_OBJ,0,0) ,"object identifier routines"},
136{ERR_PACK(ERR_LIB_PEM,0,0) ,"PEM routines"},
137{ERR_PACK(ERR_LIB_DSA,0,0) ,"dsa routines"},
138{ERR_PACK(ERR_LIB_X509,0,0) ,"x509 certificate routines"},
139{ERR_PACK(ERR_LIB_ASN1,0,0) ,"asn1 encoding routines"},
140{ERR_PACK(ERR_LIB_CONF,0,0) ,"configuration file routines"},
141{ERR_PACK(ERR_LIB_CRYPTO,0,0) ,"common libcrypto routines"},
142{ERR_PACK(ERR_LIB_EC,0,0) ,"elliptic curve routines"},
143{ERR_PACK(ERR_LIB_SSL,0,0) ,"SSL routines"},
144{ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"},
145{ERR_PACK(ERR_LIB_PKCS7,0,0) ,"PKCS7 routines"},
146{ERR_PACK(ERR_LIB_X509V3,0,0) ,"X509 V3 routines"},
147{ERR_PACK(ERR_LIB_PKCS12,0,0) ,"PKCS12 routines"},
148{ERR_PACK(ERR_LIB_RAND,0,0) ,"random number generator"},
149{ERR_PACK(ERR_LIB_DSO,0,0) ,"DSO support routines"},
150{ERR_PACK(ERR_LIB_ENGINE,0,0) ,"engine routines"},
151{ERR_PACK(ERR_LIB_OCSP,0,0) ,"OCSP routines"},
152{ERR_PACK(ERR_LIB_FIPS,0,0) ,"FIPS routines"},
153{ERR_PACK(ERR_LIB_CMS,0,0) ,"CMS routines"},
154{0,NULL},
155 };
156
157static ERR_STRING_DATA ERR_str_functs[]=
158 {
159 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"},
160 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"},
161 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"},
162 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"},
163 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"},
164 {ERR_PACK(0,SYS_F_BIND,0), "bind"},
165 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"},
166 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"},
167#ifdef OPENSSL_SYS_WINDOWS
168 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"},
169#endif
170 {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"},
171 {ERR_PACK(0,SYS_F_FREAD,0), "fread"},
172 {0,NULL},
173 };
174
175static ERR_STRING_DATA ERR_str_reasons[]=
176 {
177{ERR_R_SYS_LIB ,"system lib"},
178{ERR_R_BN_LIB ,"BN lib"},
179{ERR_R_RSA_LIB ,"RSA lib"},
180{ERR_R_DH_LIB ,"DH lib"},
181{ERR_R_EVP_LIB ,"EVP lib"},
182{ERR_R_BUF_LIB ,"BUF lib"},
183{ERR_R_OBJ_LIB ,"OBJ lib"},
184{ERR_R_PEM_LIB ,"PEM lib"},
185{ERR_R_DSA_LIB ,"DSA lib"},
186{ERR_R_X509_LIB ,"X509 lib"},
187{ERR_R_ASN1_LIB ,"ASN1 lib"},
188{ERR_R_CONF_LIB ,"CONF lib"},
189{ERR_R_CRYPTO_LIB ,"CRYPTO lib"},
190{ERR_R_EC_LIB ,"EC lib"},
191{ERR_R_SSL_LIB ,"SSL lib"},
192{ERR_R_BIO_LIB ,"BIO lib"},
193{ERR_R_PKCS7_LIB ,"PKCS7 lib"},
194{ERR_R_X509V3_LIB ,"X509V3 lib"},
195{ERR_R_PKCS12_LIB ,"PKCS12 lib"},
196{ERR_R_RAND_LIB ,"RAND lib"},
197{ERR_R_DSO_LIB ,"DSO lib"},
198{ERR_R_ENGINE_LIB ,"ENGINE lib"},
199{ERR_R_OCSP_LIB ,"OCSP lib"},
200
201{ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"},
202{ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"},
203{ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"},
204{ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"},
205{ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"},
206{ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"},
207
208{ERR_R_FATAL ,"fatal"},
209{ERR_R_MALLOC_FAILURE ,"malloc failure"},
210{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"},
211{ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"},
212{ERR_R_INTERNAL_ERROR ,"internal error"},
213{ERR_R_DISABLED ,"called a function that was disabled at compile-time"},
214
215{0,NULL},
216 };
217#endif
218
219
220/* Define the predeclared (but externally opaque) "ERR_FNS" type */
221struct st_ERR_FNS
222 {
223 /* Works on the "error_hash" string table */
224 LHASH *(*cb_err_get)(int create);
225 void (*cb_err_del)(void);
226 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *);
227 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *);
228 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *);
229 /* Works on the "thread_hash" error-state table */
230 LHASH *(*cb_thread_get)(int create);
231 void (*cb_thread_release)(LHASH **hash);
232 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *);
233 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *);
234 void (*cb_thread_del_item)(const ERR_STATE *);
235 /* Returns the next available error "library" numbers */
236 int (*cb_get_next_lib)(void);
237 };
238
239/* Predeclarations of the "err_defaults" functions */
240static LHASH *int_err_get(int create);
241static void int_err_del(void);
242static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
243static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *);
244static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *);
245static LHASH *int_thread_get(int create);
246static void int_thread_release(LHASH **hash);
247static ERR_STATE *int_thread_get_item(const ERR_STATE *);
248static ERR_STATE *int_thread_set_item(ERR_STATE *);
249static void int_thread_del_item(const ERR_STATE *);
250static int int_err_get_next_lib(void);
251/* The static ERR_FNS table using these defaults functions */
252static const ERR_FNS err_defaults =
253 {
254 int_err_get,
255 int_err_del,
256 int_err_get_item,
257 int_err_set_item,
258 int_err_del_item,
259 int_thread_get,
260 int_thread_release,
261 int_thread_get_item,
262 int_thread_set_item,
263 int_thread_del_item,
264 int_err_get_next_lib
265 };
266
267/* The replacable table of ERR_FNS functions we use at run-time */
268static const ERR_FNS *err_fns = NULL;
269
270/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */
271#define ERRFN(a) err_fns->cb_##a
272
273/* The internal state used by "err_defaults" - as such, the setting, reading,
274 * creating, and deleting of this data should only be permitted via the
275 * "err_defaults" functions. This way, a linked module can completely defer all
276 * ERR state operation (together with requisite locking) to the implementations
277 * and state in the loading application. */
278static LHASH *int_error_hash = NULL;
279static LHASH *int_thread_hash = NULL;
280static int int_thread_hash_references = 0;
281static int int_err_library_number= ERR_LIB_USER;
282
283/* Internal function that checks whether "err_fns" is set and if not, sets it to
284 * the defaults. */
285static void err_fns_check(void)
286 {
287 if (err_fns) return;
288
289 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
290 if (!err_fns)
291 err_fns = &err_defaults;
292 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
293 }
294
295/* API functions to get or set the underlying ERR functions. */
296
297const ERR_FNS *ERR_get_implementation(void)
298 {
299 err_fns_check();
300 return err_fns;
301 }
302
303int ERR_set_implementation(const ERR_FNS *fns)
304 {
305 int ret = 0;
306
307 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
308 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting
309 * an error is there?! */
310 if (!err_fns)
311 {
312 err_fns = fns;
313 ret = 1;
314 }
315 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
316 return ret;
317 }
318
319/* These are the callbacks provided to "lh_new()" when creating the LHASH tables
320 * internal to the "err_defaults" implementation. */
321
322/* static unsigned long err_hash(ERR_STRING_DATA *a); */
323static unsigned long err_hash(const void *a_void);
324/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */
325static int err_cmp(const void *a_void, const void *b_void);
326/* static unsigned long pid_hash(ERR_STATE *pid); */
327static unsigned long pid_hash(const void *pid_void);
328/* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */
329static int pid_cmp(const void *a_void,const void *pid_void);
330static unsigned long get_error_values(int inc,int top,const char **file,int *line,
331 const char **data,int *flags);
332
333/* The internal functions used in the "err_defaults" implementation */
334
335static LHASH *int_err_get(int create)
336 {
337 LHASH *ret = NULL;
338
339 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
340 if (!int_error_hash && create)
341 {
342 CRYPTO_push_info("int_err_get (err.c)");
343 int_error_hash = lh_new(err_hash, err_cmp);
344 CRYPTO_pop_info();
345 }
346 if (int_error_hash)
347 ret = int_error_hash;
348 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
349
350 return ret;
351 }
352
353static void int_err_del(void)
354 {
355 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
356 if (int_error_hash)
357 {
358 lh_free(int_error_hash);
359 int_error_hash = NULL;
360 }
361 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
362 }
363
364static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
365 {
366 ERR_STRING_DATA *p;
367 LHASH *hash;
368
369 err_fns_check();
370 hash = ERRFN(err_get)(0);
371 if (!hash)
372 return NULL;
373
374 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
375 p = (ERR_STRING_DATA *)lh_retrieve(hash, d);
376 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
377
378 return p;
379 }
380
381static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d)
382 {
383 ERR_STRING_DATA *p;
384 LHASH *hash;
385
386 err_fns_check();
387 hash = ERRFN(err_get)(1);
388 if (!hash)
389 return NULL;
390
391 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
392 p = (ERR_STRING_DATA *)lh_insert(hash, d);
393 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
394
395 return p;
396 }
397
398static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d)
399 {
400 ERR_STRING_DATA *p;
401 LHASH *hash;
402
403 err_fns_check();
404 hash = ERRFN(err_get)(0);
405 if (!hash)
406 return NULL;
407
408 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
409 p = (ERR_STRING_DATA *)lh_delete(hash, d);
410 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
411
412 return p;
413 }
414
415static LHASH *int_thread_get(int create)
416 {
417 LHASH *ret = NULL;
418
419 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
420 if (!int_thread_hash && create)
421 {
422 CRYPTO_push_info("int_thread_get (err.c)");
423 int_thread_hash = lh_new(pid_hash, pid_cmp);
424 CRYPTO_pop_info();
425 }
426 if (int_thread_hash)
427 {
428 int_thread_hash_references++;
429 ret = int_thread_hash;
430 }
431 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
432 return ret;
433 }
434
435static void int_thread_release(LHASH **hash)
436 {
437 int i;
438
439 if (hash == NULL || *hash == NULL)
440 return;
441
442 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR);
443
444#ifdef REF_PRINT
445 fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR");
446#endif
447 if (i > 0) return;
448#ifdef REF_CHECK
449 if (i < 0)
450 {
451 fprintf(stderr,"int_thread_release, bad reference count\n");
452 abort(); /* ok */
453 }
454#endif
455 *hash = NULL;
456 }
457
458static ERR_STATE *int_thread_get_item(const ERR_STATE *d)
459 {
460 ERR_STATE *p;
461 LHASH *hash;
462
463 err_fns_check();
464 hash = ERRFN(thread_get)(0);
465 if (!hash)
466 return NULL;
467
468 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
469 p = (ERR_STATE *)lh_retrieve(hash, d);
470 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
471
472 ERRFN(thread_release)(&hash);
473 return p;
474 }
475
476static ERR_STATE *int_thread_set_item(ERR_STATE *d)
477 {
478 ERR_STATE *p;
479 LHASH *hash;
480
481 err_fns_check();
482 hash = ERRFN(thread_get)(1);
483 if (!hash)
484 return NULL;
485
486 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
487 p = (ERR_STATE *)lh_insert(hash, d);
488 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
489
490 ERRFN(thread_release)(&hash);
491 return p;
492 }
493
494static void int_thread_del_item(const ERR_STATE *d)
495 {
496 ERR_STATE *p;
497 LHASH *hash;
498
499 err_fns_check();
500 hash = ERRFN(thread_get)(0);
501 if (!hash)
502 return;
503
504 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
505 p = (ERR_STATE *)lh_delete(hash, d);
506 /* make sure we don't leak memory */
507 if (int_thread_hash_references == 1
508 && int_thread_hash && (lh_num_items(int_thread_hash) == 0))
509 {
510 lh_free(int_thread_hash);
511 int_thread_hash = NULL;
512 }
513 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
514
515 ERRFN(thread_release)(&hash);
516 if (p)
517 ERR_STATE_free(p);
518 }
519
520static int int_err_get_next_lib(void)
521 {
522 int ret;
523
524 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
525 ret = int_err_library_number++;
526 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
527
528 return ret;
529 }
530
531
532#ifndef OPENSSL_NO_ERR
533#define NUM_SYS_STR_REASONS 127
534#define LEN_SYS_STR_REASON 32
535
536static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
537/* SYS_str_reasons is filled with copies of strerror() results at
538 * initialization.
539 * 'errno' values up to 127 should cover all usual errors,
540 * others will be displayed numerically by ERR_error_string.
541 * It is crucial that we have something for each reason code
542 * that occurs in ERR_str_reasons, or bogus reason strings
543 * will be returned for SYSerr(), which always gets an errno
544 * value and never one of those 'standard' reason codes. */
545
546static void build_SYS_str_reasons(void)
547 {
548 /* OPENSSL_malloc cannot be used here, use static storage instead */
549 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
550 int i;
551 static int init = 1;
552
553 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
554 if (!init)
555 {
556 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
557 return;
558 }
559
560 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
561 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
562 if (!init)
563 {
564 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
565 return;
566 }
567
568 for (i = 1; i <= NUM_SYS_STR_REASONS; i++)
569 {
570 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
571
572 str->error = (unsigned long)i;
573 if (str->string == NULL)
574 {
575 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]);
576 char *src = strerror(i);
577 if (src != NULL)
578 {
579 strncpy(*dest, src, sizeof *dest);
580 (*dest)[sizeof *dest - 1] = '\0';
581 str->string = *dest;
582 }
583 }
584 if (str->string == NULL)
585 str->string = "unknown";
586 }
587
588 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL},
589 * as required by ERR_load_strings. */
590
591 init = 0;
592
593 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
594 }
595#endif
596
597#define err_clear_data(p,i) \
598 do { \
599 if (((p)->err_data[i] != NULL) && \
600 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
601 { \
602 OPENSSL_free((p)->err_data[i]); \
603 (p)->err_data[i]=NULL; \
604 } \
605 (p)->err_data_flags[i]=0; \
606 } while(0)
607
608#define err_clear(p,i) \
609 do { \
610 (p)->err_flags[i]=0; \
611 (p)->err_buffer[i]=0; \
612 err_clear_data(p,i); \
613 (p)->err_file[i]=NULL; \
614 (p)->err_line[i]= -1; \
615 } while(0)
616
617static void ERR_STATE_free(ERR_STATE *s)
618 {
619 int i;
620
621 if (s == NULL)
622 return;
623
624 for (i=0; i<ERR_NUM_ERRORS; i++)
625 {
626 err_clear_data(s,i);
627 }
628 OPENSSL_free(s);
629 }
630
631void ERR_load_ERR_strings(void)
632 {
633 err_fns_check();
634#ifndef OPENSSL_NO_ERR
635 err_load_strings(0,ERR_str_libraries);
636 err_load_strings(0,ERR_str_reasons);
637 err_load_strings(ERR_LIB_SYS,ERR_str_functs);
638 build_SYS_str_reasons();
639 err_load_strings(ERR_LIB_SYS,SYS_str_reasons);
640#endif
641 }
642
643static void err_load_strings(int lib, ERR_STRING_DATA *str)
644 {
645 while (str->error)
646 {
647 if (lib)
648 str->error|=ERR_PACK(lib,0,0);
649 ERRFN(err_set_item)(str);
650 str++;
651 }
652 }
653
654void ERR_load_strings(int lib, ERR_STRING_DATA *str)
655 {
656 ERR_load_ERR_strings();
657 err_load_strings(lib, str);
658 }
659
660void ERR_unload_strings(int lib, ERR_STRING_DATA *str)
661 {
662 while (str->error)
663 {
664 if (lib)
665 str->error|=ERR_PACK(lib,0,0);
666 ERRFN(err_del_item)(str);
667 str++;
668 }
669 }
670
671void ERR_free_strings(void)
672 {
673 err_fns_check();
674 ERRFN(err_del)();
675 }
676
677/********************************************************/
678
679void ERR_put_error(int lib, int func, int reason, const char *file,
680 int line)
681 {
682 ERR_STATE *es;
683
684#ifdef _OSD_POSIX
685 /* In the BS2000-OSD POSIX subsystem, the compiler generates
686 * path names in the form "*POSIX(/etc/passwd)".
687 * This dirty hack strips them to something sensible.
688 * @@@ We shouldn't modify a const string, though.
689 */
690 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) {
691 char *end;
692
693 /* Skip the "*POSIX(" prefix */
694 file += sizeof("*POSIX(")-1;
695 end = &file[strlen(file)-1];
696 if (*end == ')')
697 *end = '\0';
698 /* Optional: use the basename of the path only. */
699 if ((end = strrchr(file, '/')) != NULL)
700 file = &end[1];
701 }
702#endif
703 es=ERR_get_state();
704
705 es->top=(es->top+1)%ERR_NUM_ERRORS;
706 if (es->top == es->bottom)
707 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
708 es->err_flags[es->top]=0;
709 es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
710 es->err_file[es->top]=file;
711 es->err_line[es->top]=line;
712 err_clear_data(es,es->top);
713 }
714
715void ERR_clear_error(void)
716 {
717 int i;
718 ERR_STATE *es;
719
720 es=ERR_get_state();
721
722 for (i=0; i<ERR_NUM_ERRORS; i++)
723 {
724 err_clear(es,i);
725 }
726 es->top=es->bottom=0;
727 }
728
729
730unsigned long ERR_get_error(void)
731 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); }
732
733unsigned long ERR_get_error_line(const char **file,
734 int *line)
735 { return(get_error_values(1,0,file,line,NULL,NULL)); }
736
737unsigned long ERR_get_error_line_data(const char **file, int *line,
738 const char **data, int *flags)
739 { return(get_error_values(1,0,file,line,data,flags)); }
740
741
742unsigned long ERR_peek_error(void)
743 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); }
744
745unsigned long ERR_peek_error_line(const char **file, int *line)
746 { return(get_error_values(0,0,file,line,NULL,NULL)); }
747
748unsigned long ERR_peek_error_line_data(const char **file, int *line,
749 const char **data, int *flags)
750 { return(get_error_values(0,0,file,line,data,flags)); }
751
752
753unsigned long ERR_peek_last_error(void)
754 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); }
755
756unsigned long ERR_peek_last_error_line(const char **file, int *line)
757 { return(get_error_values(0,1,file,line,NULL,NULL)); }
758
759unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
760 const char **data, int *flags)
761 { return(get_error_values(0,1,file,line,data,flags)); }
762
763
764static unsigned long get_error_values(int inc, int top, const char **file, int *line,
765 const char **data, int *flags)
766 {
767 int i=0;
768 ERR_STATE *es;
769 unsigned long ret;
770
771 es=ERR_get_state();
772
773 if (inc && top)
774 {
775 if (file) *file = "";
776 if (line) *line = 0;
777 if (data) *data = "";
778 if (flags) *flags = 0;
779
780 return ERR_R_INTERNAL_ERROR;
781 }
782
783 if (es->bottom == es->top) return 0;
784 if (top)
785 i=es->top; /* last error */
786 else
787 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */
788
789 ret=es->err_buffer[i];
790 if (inc)
791 {
792 es->bottom=i;
793 es->err_buffer[i]=0;
794 }
795
796 if ((file != NULL) && (line != NULL))
797 {
798 if (es->err_file[i] == NULL)
799 {
800 *file="NA";
801 if (line != NULL) *line=0;
802 }
803 else
804 {
805 *file=es->err_file[i];
806 if (line != NULL) *line=es->err_line[i];
807 }
808 }
809
810 if (data == NULL)
811 {
812 if (inc)
813 {
814 err_clear_data(es, i);
815 }
816 }
817 else
818 {
819 if (es->err_data[i] == NULL)
820 {
821 *data="";
822 if (flags != NULL) *flags=0;
823 }
824 else
825 {
826 *data=es->err_data[i];
827 if (flags != NULL) *flags=es->err_data_flags[i];
828 }
829 }
830 return ret;
831 }
832
833void ERR_error_string_n(unsigned long e, char *buf, size_t len)
834 {
835 char lsbuf[64], fsbuf[64], rsbuf[64];
836 const char *ls,*fs,*rs;
837 unsigned long l,f,r;
838
839 l=ERR_GET_LIB(e);
840 f=ERR_GET_FUNC(e);
841 r=ERR_GET_REASON(e);
842
843 ls=ERR_lib_error_string(e);
844 fs=ERR_func_error_string(e);
845 rs=ERR_reason_error_string(e);
846
847 if (ls == NULL)
848 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
849 if (fs == NULL)
850 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
851 if (rs == NULL)
852 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
853
854 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf,
855 fs?fs:fsbuf, rs?rs:rsbuf);
856 if (strlen(buf) == len-1)
857 {
858 /* output may be truncated; make sure we always have 5
859 * colon-separated fields, i.e. 4 colons ... */
860#define NUM_COLONS 4
861 if (len > NUM_COLONS) /* ... if possible */
862 {
863 int i;
864 char *s = buf;
865
866 for (i = 0; i < NUM_COLONS; i++)
867 {
868 char *colon = strchr(s, ':');
869 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i)
870 {
871 /* set colon no. i at last possible position
872 * (buf[len-1] is the terminating 0)*/
873 colon = &buf[len-1] - NUM_COLONS + i;
874 *colon = ':';
875 }
876 s = colon + 1;
877 }
878 }
879 }
880 }
881
882/* BAD for multi-threading: uses a local buffer if ret == NULL */
883/* ERR_error_string_n should be used instead for ret != NULL
884 * as ERR_error_string cannot know how large the buffer is */
885char *ERR_error_string(unsigned long e, char *ret)
886 {
887 static char buf[256];
888
889 if (ret == NULL) ret=buf;
890 ERR_error_string_n(e, ret, 256);
891
892 return ret;
893 }
894
895LHASH *ERR_get_string_table(void)
896 {
897 err_fns_check();
898 return ERRFN(err_get)(0);
899 }
900
901LHASH *ERR_get_err_state_table(void)
902 {
903 err_fns_check();
904 return ERRFN(thread_get)(0);
905 }
906
907void ERR_release_err_state_table(LHASH **hash)
908 {
909 err_fns_check();
910 ERRFN(thread_release)(hash);
911 }
912
913const char *ERR_lib_error_string(unsigned long e)
914 {
915 ERR_STRING_DATA d,*p;
916 unsigned long l;
917
918 err_fns_check();
919 l=ERR_GET_LIB(e);
920 d.error=ERR_PACK(l,0,0);
921 p=ERRFN(err_get_item)(&d);
922 return((p == NULL)?NULL:p->string);
923 }
924
925const char *ERR_func_error_string(unsigned long e)
926 {
927 ERR_STRING_DATA d,*p;
928 unsigned long l,f;
929
930 err_fns_check();
931 l=ERR_GET_LIB(e);
932 f=ERR_GET_FUNC(e);
933 d.error=ERR_PACK(l,f,0);
934 p=ERRFN(err_get_item)(&d);
935 return((p == NULL)?NULL:p->string);
936 }
937
938const char *ERR_reason_error_string(unsigned long e)
939 {
940 ERR_STRING_DATA d,*p=NULL;
941 unsigned long l,r;
942
943 err_fns_check();
944 l=ERR_GET_LIB(e);
945 r=ERR_GET_REASON(e);
946 d.error=ERR_PACK(l,0,r);
947 p=ERRFN(err_get_item)(&d);
948 if (!p)
949 {
950 d.error=ERR_PACK(0,0,r);
951 p=ERRFN(err_get_item)(&d);
952 }
953 return((p == NULL)?NULL:p->string);
954 }
955
956/* static unsigned long err_hash(ERR_STRING_DATA *a) */
957static unsigned long err_hash(const void *a_void)
958 {
959 unsigned long ret,l;
960
961 l=((const ERR_STRING_DATA *)a_void)->error;
962 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
963 return(ret^ret%19*13);
964 }
965
966/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */
967static int err_cmp(const void *a_void, const void *b_void)
968 {
969 return((int)(((const ERR_STRING_DATA *)a_void)->error -
970 ((const ERR_STRING_DATA *)b_void)->error));
971 }
972
973/* static unsigned long pid_hash(ERR_STATE *a) */
974static unsigned long pid_hash(const void *a_void)
975 {
976 return(((const ERR_STATE *)a_void)->pid*13);
977 }
978
979/* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */
980static int pid_cmp(const void *a_void, const void *b_void)
981 {
982 return((int)((long)((const ERR_STATE *)a_void)->pid -
983 (long)((const ERR_STATE *)b_void)->pid));
984 }
985
986void ERR_remove_state(unsigned long pid)
987 {
988 ERR_STATE tmp;
989
990 err_fns_check();
991 if (pid == 0)
992 pid=(unsigned long)CRYPTO_thread_id();
993 tmp.pid=pid;
994 /* thread_del_item automatically destroys the LHASH if the number of
995 * items reaches zero. */
996 ERRFN(thread_del_item)(&tmp);
997 }
998
999ERR_STATE *ERR_get_state(void)
1000 {
1001 static ERR_STATE fallback;
1002 ERR_STATE *ret,tmp,*tmpp=NULL;
1003 int i;
1004 unsigned long pid;
1005
1006 err_fns_check();
1007 pid=(unsigned long)CRYPTO_thread_id();
1008 tmp.pid=pid;
1009 ret=ERRFN(thread_get_item)(&tmp);
1010
1011 /* ret == the error state, if NULL, make a new one */
1012 if (ret == NULL)
1013 {
1014 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE));
1015 if (ret == NULL) return(&fallback);
1016 ret->pid=pid;
1017 ret->top=0;
1018 ret->bottom=0;
1019 for (i=0; i<ERR_NUM_ERRORS; i++)
1020 {
1021 ret->err_data[i]=NULL;
1022 ret->err_data_flags[i]=0;
1023 }
1024 tmpp = ERRFN(thread_set_item)(ret);
1025 /* To check if insertion failed, do a get. */
1026 if (ERRFN(thread_get_item)(ret) != ret)
1027 {
1028 ERR_STATE_free(ret); /* could not insert it */
1029 return(&fallback);
1030 }
1031 /* If a race occured in this function and we came second, tmpp
1032 * is the first one that we just replaced. */
1033 if (tmpp)
1034 ERR_STATE_free(tmpp);
1035 }
1036 return ret;
1037 }
1038
1039int ERR_get_next_error_library(void)
1040 {
1041 err_fns_check();
1042 return ERRFN(get_next_lib)();
1043 }
1044
1045void ERR_set_error_data(char *data, int flags)
1046 {
1047 ERR_STATE *es;
1048 int i;
1049
1050 es=ERR_get_state();
1051
1052 i=es->top;
1053 if (i == 0)
1054 i=ERR_NUM_ERRORS-1;
1055
1056 err_clear_data(es,i);
1057 es->err_data[i]=data;
1058 es->err_data_flags[i]=flags;
1059 }
1060
1061void ERR_add_error_data(int num, ...)
1062 {
1063 va_list args;
1064 int i,n,s;
1065 char *str,*p,*a;
1066
1067 s=80;
1068 str=OPENSSL_malloc(s+1);
1069 if (str == NULL) return;
1070 str[0]='\0';
1071
1072 va_start(args, num);
1073 n=0;
1074 for (i=0; i<num; i++)
1075 {
1076 a=va_arg(args, char*);
1077 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
1078 if (a != NULL)
1079 {
1080 n+=strlen(a);
1081 if (n > s)
1082 {
1083 s=n+20;
1084 p=OPENSSL_realloc(str,s+1);
1085 if (p == NULL)
1086 {
1087 OPENSSL_free(str);
1088 goto err;
1089 }
1090 else
1091 str=p;
1092 }
1093 BUF_strlcat(str,a,(size_t)s+1);
1094 }
1095 }
1096 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING);
1097
1098err:
1099 va_end(args);
1100 }
1101
1102int ERR_set_mark(void)
1103 {
1104 ERR_STATE *es;
1105
1106 es=ERR_get_state();
1107
1108 if (es->bottom == es->top) return 0;
1109 es->err_flags[es->top]|=ERR_FLAG_MARK;
1110 return 1;
1111 }
1112
1113int ERR_pop_to_mark(void)
1114 {
1115 ERR_STATE *es;
1116
1117 es=ERR_get_state();
1118
1119 while(es->bottom != es->top
1120 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0)
1121 {
1122 err_clear(es,es->top);
1123 es->top-=1;
1124 if (es->top == -1) es->top=ERR_NUM_ERRORS-1;
1125 }
1126
1127 if (es->bottom == es->top) return 0;
1128 es->err_flags[es->top]&=~ERR_FLAG_MARK;
1129 return 1;
1130 }
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-04-27 17:11:07 +0000