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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 <openssl/lhash.h>
116#include <openssl/crypto.h>
117#include "cryptlib.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{0,NULL},
153 };
154
155static ERR_STRING_DATA ERR_str_functs[]=
156 {
157 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"},
158 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"},
159 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"},
160 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"},
161 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"},
162 {ERR_PACK(0,SYS_F_BIND,0), "bind"},
163 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"},
164 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"},
165#ifdef OPENSSL_SYS_WINDOWS
166 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"},
167#endif
168 {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"},
169 {ERR_PACK(0,SYS_F_FREAD,0), "fread"},
170 {0,NULL},
171 };
172
173static ERR_STRING_DATA ERR_str_reasons[]=
174 {
175{ERR_R_SYS_LIB ,"system lib"},
176{ERR_R_BN_LIB ,"BN lib"},
177{ERR_R_RSA_LIB ,"RSA lib"},
178{ERR_R_DH_LIB ,"DH lib"},
179{ERR_R_EVP_LIB ,"EVP lib"},
180{ERR_R_BUF_LIB ,"BUF lib"},
181{ERR_R_OBJ_LIB ,"OBJ lib"},
182{ERR_R_PEM_LIB ,"PEM lib"},
183{ERR_R_DSA_LIB ,"DSA lib"},
184{ERR_R_X509_LIB ,"X509 lib"},
185{ERR_R_ASN1_LIB ,"ASN1 lib"},
186{ERR_R_CONF_LIB ,"CONF lib"},
187{ERR_R_CRYPTO_LIB ,"CRYPTO lib"},
188{ERR_R_EC_LIB ,"EC lib"},
189{ERR_R_SSL_LIB ,"SSL lib"},
190{ERR_R_BIO_LIB ,"BIO lib"},
191{ERR_R_PKCS7_LIB ,"PKCS7 lib"},
192{ERR_R_X509V3_LIB ,"X509V3 lib"},
193{ERR_R_PKCS12_LIB ,"PKCS12 lib"},
194{ERR_R_RAND_LIB ,"RAND lib"},
195{ERR_R_DSO_LIB ,"DSO lib"},
196{ERR_R_ENGINE_LIB ,"ENGINE lib"},
197{ERR_R_OCSP_LIB ,"OCSP lib"},
198
199{ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"},
200{ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"},
201{ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"},
202{ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"},
203{ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"},
204{ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"},
205
206{ERR_R_FATAL ,"fatal"},
207{ERR_R_MALLOC_FAILURE ,"malloc failure"},
208{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"},
209{ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"},
210{ERR_R_INTERNAL_ERROR ,"internal error"},
211
212{0,NULL},
213 };
214#endif
215
216
217/* Define the predeclared (but externally opaque) "ERR_FNS" type */
218struct st_ERR_FNS
219 {
220 /* Works on the "error_hash" string table */
221 LHASH *(*cb_err_get)(int create);
222 void (*cb_err_del)(void);
223 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *);
224 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *);
225 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *);
226 /* Works on the "thread_hash" error-state table */
227 LHASH *(*cb_thread_get)(int create);
228 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *);
229 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *);
230 void (*cb_thread_del_item)(const ERR_STATE *);
231 /* Returns the next available error "library" numbers */
232 int (*cb_get_next_lib)(void);
233 };
234
235/* Predeclarations of the "err_defaults" functions */
236static LHASH *int_err_get(int create);
237static void int_err_del(void);
238static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
239static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *);
240static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *);
241static LHASH *int_thread_get(int create);
242static ERR_STATE *int_thread_get_item(const ERR_STATE *);
243static ERR_STATE *int_thread_set_item(ERR_STATE *);
244static void int_thread_del_item(const ERR_STATE *);
245static int int_err_get_next_lib(void);
246/* The static ERR_FNS table using these defaults functions */
247static const ERR_FNS err_defaults =
248 {
249 int_err_get,
250 int_err_del,
251 int_err_get_item,
252 int_err_set_item,
253 int_err_del_item,
254 int_thread_get,
255 int_thread_get_item,
256 int_thread_set_item,
257 int_thread_del_item,
258 int_err_get_next_lib
259 };
260
261/* The replacable table of ERR_FNS functions we use at run-time */
262static const ERR_FNS *err_fns = NULL;
263
264/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */
265#define ERRFN(a) err_fns->cb_##a
266
267/* The internal state used by "err_defaults" - as such, the setting, reading,
268 * creating, and deleting of this data should only be permitted via the
269 * "err_defaults" functions. This way, a linked module can completely defer all
270 * ERR state operation (together with requisite locking) to the implementations
271 * and state in the loading application. */
272static LHASH *int_error_hash = NULL;
273static LHASH *int_thread_hash = NULL;
274static int int_err_library_number= ERR_LIB_USER;
275
276/* Internal function that checks whether "err_fns" is set and if not, sets it to
277 * the defaults. */
278static void err_fns_check(void)
279 {
280 if (err_fns) return;
281
282 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
283 if (!err_fns)
284 err_fns = &err_defaults;
285 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
286 }
287
288/* API functions to get or set the underlying ERR functions. */
289
290const ERR_FNS *ERR_get_implementation(void)
291 {
292 err_fns_check();
293 return err_fns;
294 }
295
296int ERR_set_implementation(const ERR_FNS *fns)
297 {
298 int ret = 0;
299
300 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
301 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting
302 * an error is there?! */
303 if (!err_fns)
304 {
305 err_fns = fns;
306 ret = 1;
307 }
308 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
309 return ret;
310 }
311
312/* These are the callbacks provided to "lh_new()" when creating the LHASH tables
313 * internal to the "err_defaults" implementation. */
314
315/* static unsigned long err_hash(ERR_STRING_DATA *a); */
316static unsigned long err_hash(const void *a_void);
317/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */
318static int err_cmp(const void *a_void, const void *b_void);
319/* static unsigned long pid_hash(ERR_STATE *pid); */
320static unsigned long pid_hash(const void *pid_void);
321/* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */
322static int pid_cmp(const void *a_void,const void *pid_void);
323static unsigned long get_error_values(int inc,int top,const char **file,int *line,
324 const char **data,int *flags);
325
326/* The internal functions used in the "err_defaults" implementation */
327
328static LHASH *int_err_get(int create)
329 {
330 LHASH *ret = NULL;
331
332 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
333 if (!int_error_hash && create)
334 {
335 CRYPTO_push_info("int_err_get (err.c)");
336 int_error_hash = lh_new(err_hash, err_cmp);
337 CRYPTO_pop_info();
338 }
339 if (int_error_hash)
340 ret = int_error_hash;
341 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
342
343 return ret;
344 }
345
346static void int_err_del(void)
347 {
348 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
349 if (int_error_hash)
350 {
351 lh_free(int_error_hash);
352 int_error_hash = NULL;
353 }
354 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
355 }
356
357static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
358 {
359 ERR_STRING_DATA *p;
360 LHASH *hash;
361
362 err_fns_check();
363 hash = ERRFN(err_get)(0);
364 if (!hash)
365 return NULL;
366
367 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
368 p = (ERR_STRING_DATA *)lh_retrieve(hash, d);
369 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
370
371 return p;
372 }
373
374static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d)
375 {
376 ERR_STRING_DATA *p;
377 LHASH *hash;
378
379 err_fns_check();
380 hash = ERRFN(err_get)(1);
381 if (!hash)
382 return NULL;
383
384 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
385 p = (ERR_STRING_DATA *)lh_insert(hash, d);
386 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
387
388 return p;
389 }
390
391static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d)
392 {
393 ERR_STRING_DATA *p;
394 LHASH *hash;
395
396 err_fns_check();
397 hash = ERRFN(err_get)(0);
398 if (!hash)
399 return NULL;
400
401 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
402 p = (ERR_STRING_DATA *)lh_delete(hash, d);
403 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
404
405 return p;
406 }
407
408static LHASH *int_thread_get(int create)
409 {
410 LHASH *ret = NULL;
411
412 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
413 if (!int_thread_hash && create)
414 {
415 CRYPTO_push_info("int_thread_get (err.c)");
416 int_thread_hash = lh_new(pid_hash, pid_cmp);
417 CRYPTO_pop_info();
418 }
419 if (int_thread_hash)
420 ret = int_thread_hash;
421 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
422 return ret;
423 }
424
425static ERR_STATE *int_thread_get_item(const ERR_STATE *d)
426 {
427 ERR_STATE *p;
428 LHASH *hash;
429
430 err_fns_check();
431 hash = ERRFN(thread_get)(0);
432 if (!hash)
433 return NULL;
434
435 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
436 p = (ERR_STATE *)lh_retrieve(hash, d);
437 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
438
439 return p;
440 }
441
442static ERR_STATE *int_thread_set_item(ERR_STATE *d)
443 {
444 ERR_STATE *p;
445 LHASH *hash;
446
447 err_fns_check();
448 hash = ERRFN(thread_get)(1);
449 if (!hash)
450 return NULL;
451
452 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
453 p = (ERR_STATE *)lh_insert(hash, d);
454 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
455
456 return p;
457 }
458
459static void int_thread_del_item(const ERR_STATE *d)
460 {
461 ERR_STATE *p;
462 LHASH *hash;
463
464 err_fns_check();
465 hash = ERRFN(thread_get)(0);
466 if (!hash)
467 return;
468
469 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
470 p = (ERR_STATE *)lh_delete(hash, d);
471 /* make sure we don't leak memory */
472 if (int_thread_hash && (lh_num_items(int_thread_hash) == 0))
473 {
474 lh_free(int_thread_hash);
475 int_thread_hash = NULL;
476 }
477 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
478
479 if (p)
480 ERR_STATE_free(p);
481 }
482
483static int int_err_get_next_lib(void)
484 {
485 int ret;
486
487 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
488 ret = int_err_library_number++;
489 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
490
491 return ret;
492 }
493
494
495#ifndef OPENSSL_NO_ERR
496#define NUM_SYS_STR_REASONS 127
497#define LEN_SYS_STR_REASON 32
498
499static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
500/* SYS_str_reasons is filled with copies of strerror() results at
501 * initialization.
502 * 'errno' values up to 127 should cover all usual errors,
503 * others will be displayed numerically by ERR_error_string.
504 * It is crucial that we have something for each reason code
505 * that occurs in ERR_str_reasons, or bogus reason strings
506 * will be returned for SYSerr(), which always gets an errno
507 * value and never one of those 'standard' reason codes. */
508
509static void build_SYS_str_reasons()
510 {
511 /* OPENSSL_malloc cannot be used here, use static storage instead */
512 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
513 int i;
514 static int init = 1;
515
516 if (!init) return;
517
518 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
519
520 for (i = 1; i <= NUM_SYS_STR_REASONS; i++)
521 {
522 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
523
524 str->error = (unsigned long)i;
525 if (str->string == NULL)
526 {
527 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]);
528 char *src = strerror(i);
529 if (src != NULL)
530 {
531 strncpy(*dest, src, sizeof *dest);
532 (*dest)[sizeof *dest - 1] = '\0';
533 str->string = *dest;
534 }
535 }
536 if (str->string == NULL)
537 str->string = "unknown";
538 }
539
540 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL},
541 * as required by ERR_load_strings. */
542
543 init = 0;
544
545 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
546 }
547#endif
548
549#define err_clear_data(p,i) \
550 if (((p)->err_data[i] != NULL) && \
551 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
552 { \
553 OPENSSL_free((p)->err_data[i]); \
554 (p)->err_data[i]=NULL; \
555 } \
556 (p)->err_data_flags[i]=0;
557
558static void ERR_STATE_free(ERR_STATE *s)
559 {
560 int i;
561
562 if (s == NULL)
563 return;
564
565 for (i=0; i<ERR_NUM_ERRORS; i++)
566 {
567 err_clear_data(s,i);
568 }
569 OPENSSL_free(s);
570 }
571
572void ERR_load_ERR_strings(void)
573 {
574 err_fns_check();
575#ifndef OPENSSL_NO_ERR
576 err_load_strings(0,ERR_str_libraries);
577 err_load_strings(0,ERR_str_reasons);
578 err_load_strings(ERR_LIB_SYS,ERR_str_functs);
579 build_SYS_str_reasons();
580 err_load_strings(ERR_LIB_SYS,SYS_str_reasons);
581#endif
582 }
583
584static void err_load_strings(int lib, ERR_STRING_DATA *str)
585 {
586 while (str->error)
587 {
588 str->error|=ERR_PACK(lib,0,0);
589 ERRFN(err_set_item)(str);
590 str++;
591 }
592 }
593
594void ERR_load_strings(int lib, ERR_STRING_DATA *str)
595 {
596 ERR_load_ERR_strings();
597 err_load_strings(lib, str);
598 }
599
600void ERR_unload_strings(int lib, ERR_STRING_DATA *str)
601 {
602 while (str->error)
603 {
604 str->error|=ERR_PACK(lib,0,0);
605 ERRFN(err_del_item)(str);
606 str++;
607 }
608 }
609
610void ERR_free_strings(void)
611 {
612 err_fns_check();
613 ERRFN(err_del)();
614 }
615
616/********************************************************/
617
618void ERR_put_error(int lib, int func, int reason, const char *file,
619 int line)
620 {
621 ERR_STATE *es;
622
623#ifdef _OSD_POSIX
624 /* In the BS2000-OSD POSIX subsystem, the compiler generates
625 * path names in the form "*POSIX(/etc/passwd)".
626 * This dirty hack strips them to something sensible.
627 * @@@ We shouldn't modify a const string, though.
628 */
629 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) {
630 char *end;
631
632 /* Skip the "*POSIX(" prefix */
633 file += sizeof("*POSIX(")-1;
634 end = &file[strlen(file)-1];
635 if (*end == ')')
636 *end = '\0';
637 /* Optional: use the basename of the path only. */
638 if ((end = strrchr(file, '/')) != NULL)
639 file = &end[1];
640 }
641#endif
642 es=ERR_get_state();
643
644 es->top=(es->top+1)%ERR_NUM_ERRORS;
645 if (es->top == es->bottom)
646 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
647 es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
648 es->err_file[es->top]=file;
649 es->err_line[es->top]=line;
650 err_clear_data(es,es->top);
651 }
652
653void ERR_clear_error(void)
654 {
655 int i;
656 ERR_STATE *es;
657
658 es=ERR_get_state();
659
660 for (i=0; i<ERR_NUM_ERRORS; i++)
661 {
662 es->err_buffer[i]=0;
663 err_clear_data(es,i);
664 es->err_file[i]=NULL;
665 es->err_line[i]= -1;
666 }
667 es->top=es->bottom=0;
668 }
669
670
671unsigned long ERR_get_error(void)
672 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); }
673
674unsigned long ERR_get_error_line(const char **file,
675 int *line)
676 { return(get_error_values(1,0,file,line,NULL,NULL)); }
677
678unsigned long ERR_get_error_line_data(const char **file, int *line,
679 const char **data, int *flags)
680 { return(get_error_values(1,0,file,line,data,flags)); }
681
682
683unsigned long ERR_peek_error(void)
684 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); }
685
686unsigned long ERR_peek_error_line(const char **file, int *line)
687 { return(get_error_values(0,0,file,line,NULL,NULL)); }
688
689unsigned long ERR_peek_error_line_data(const char **file, int *line,
690 const char **data, int *flags)
691 { return(get_error_values(0,0,file,line,data,flags)); }
692
693
694unsigned long ERR_peek_last_error(void)
695 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); }
696
697unsigned long ERR_peek_last_error_line(const char **file, int *line)
698 { return(get_error_values(0,1,file,line,NULL,NULL)); }
699
700unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
701 const char **data, int *flags)
702 { return(get_error_values(0,1,file,line,data,flags)); }
703
704
705static unsigned long get_error_values(int inc, int top, const char **file, int *line,
706 const char **data, int *flags)
707 {
708 int i=0;
709 ERR_STATE *es;
710 unsigned long ret;
711
712 es=ERR_get_state();
713
714 if (inc && top)
715 {
716 if (file) *file = "";
717 if (line) *line = 0;
718 if (data) *data = "";
719 if (flags) *flags = 0;
720
721 return ERR_R_INTERNAL_ERROR;
722 }
723
724 if (es->bottom == es->top) return 0;
725 if (top)
726 i=es->top; /* last error */
727 else
728 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */
729
730 ret=es->err_buffer[i];
731 if (inc)
732 {
733 es->bottom=i;
734 es->err_buffer[i]=0;
735 }
736
737 if ((file != NULL) && (line != NULL))
738 {
739 if (es->err_file[i] == NULL)
740 {
741 *file="NA";
742 if (line != NULL) *line=0;
743 }
744 else
745 {
746 *file=es->err_file[i];
747 if (line != NULL) *line=es->err_line[i];
748 }
749 }
750
751 if (data == NULL)
752 {
753 if (inc)
754 {
755 err_clear_data(es, i);
756 }
757 }
758 else
759 {
760 if (es->err_data[i] == NULL)
761 {
762 *data="";
763 if (flags != NULL) *flags=0;
764 }
765 else
766 {
767 *data=es->err_data[i];
768 if (flags != NULL) *flags=es->err_data_flags[i];
769 }
770 }
771 return ret;
772 }
773
774void ERR_error_string_n(unsigned long e, char *buf, size_t len)
775 {
776 char lsbuf[64], fsbuf[64], rsbuf[64];
777 const char *ls,*fs,*rs;
778 unsigned long l,f,r;
779
780 l=ERR_GET_LIB(e);
781 f=ERR_GET_FUNC(e);
782 r=ERR_GET_REASON(e);
783
784 ls=ERR_lib_error_string(e);
785 fs=ERR_func_error_string(e);
786 rs=ERR_reason_error_string(e);
787
788 if (ls == NULL)
789 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
790 if (fs == NULL)
791 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
792 if (rs == NULL)
793 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
794
795 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf,
796 fs?fs:fsbuf, rs?rs:rsbuf);
797 if (strlen(buf) == len-1)
798 {
799 /* output may be truncated; make sure we always have 5
800 * colon-separated fields, i.e. 4 colons ... */
801#define NUM_COLONS 4
802 if (len > NUM_COLONS) /* ... if possible */
803 {
804 int i;
805 char *s = buf;
806
807 for (i = 0; i < NUM_COLONS; i++)
808 {
809 char *colon = strchr(s, ':');
810 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i)
811 {
812 /* set colon no. i at last possible position
813 * (buf[len-1] is the terminating 0)*/
814 colon = &buf[len-1] - NUM_COLONS + i;
815 *colon = ':';
816 }
817 s = colon + 1;
818 }
819 }
820 }
821 }
822
823/* BAD for multi-threading: uses a local buffer if ret == NULL */
824/* ERR_error_string_n should be used instead for ret != NULL
825 * as ERR_error_string cannot know how large the buffer is */
826char *ERR_error_string(unsigned long e, char *ret)
827 {
828 static char buf[256];
829
830 if (ret == NULL) ret=buf;
831 ERR_error_string_n(e, ret, 256);
832
833 return ret;
834 }
835
836LHASH *ERR_get_string_table(void)
837 {
838 err_fns_check();
839 return ERRFN(err_get)(0);
840 }
841
842LHASH *ERR_get_err_state_table(void)
843 {
844 err_fns_check();
845 return ERRFN(thread_get)(0);
846 }
847
848const char *ERR_lib_error_string(unsigned long e)
849 {
850 ERR_STRING_DATA d,*p;
851 unsigned long l;
852
853 err_fns_check();
854 l=ERR_GET_LIB(e);
855 d.error=ERR_PACK(l,0,0);
856 p=ERRFN(err_get_item)(&d);
857 return((p == NULL)?NULL:p->string);
858 }
859
860const char *ERR_func_error_string(unsigned long e)
861 {
862 ERR_STRING_DATA d,*p;
863 unsigned long l,f;
864
865 err_fns_check();
866 l=ERR_GET_LIB(e);
867 f=ERR_GET_FUNC(e);
868 d.error=ERR_PACK(l,f,0);
869 p=ERRFN(err_get_item)(&d);
870 return((p == NULL)?NULL:p->string);
871 }
872
873const char *ERR_reason_error_string(unsigned long e)
874 {
875 ERR_STRING_DATA d,*p=NULL;
876 unsigned long l,r;
877
878 err_fns_check();
879 l=ERR_GET_LIB(e);
880 r=ERR_GET_REASON(e);
881 d.error=ERR_PACK(l,0,r);
882 p=ERRFN(err_get_item)(&d);
883 if (!p)
884 {
885 d.error=ERR_PACK(0,0,r);
886 p=ERRFN(err_get_item)(&d);
887 }
888 return((p == NULL)?NULL:p->string);
889 }
890
891/* static unsigned long err_hash(ERR_STRING_DATA *a) */
892static unsigned long err_hash(const void *a_void)
893 {
894 unsigned long ret,l;
895
896 l=((ERR_STRING_DATA *)a_void)->error;
897 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
898 return(ret^ret%19*13);
899 }
900
901/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */
902static int err_cmp(const void *a_void, const void *b_void)
903 {
904 return((int)(((ERR_STRING_DATA *)a_void)->error -
905 ((ERR_STRING_DATA *)b_void)->error));
906 }
907
908/* static unsigned long pid_hash(ERR_STATE *a) */
909static unsigned long pid_hash(const void *a_void)
910 {
911 return(((ERR_STATE *)a_void)->pid*13);
912 }
913
914/* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */
915static int pid_cmp(const void *a_void, const void *b_void)
916 {
917 return((int)((long)((ERR_STATE *)a_void)->pid -
918 (long)((ERR_STATE *)b_void)->pid));
919 }
920
921void ERR_remove_state(unsigned long pid)
922 {
923 ERR_STATE tmp;
924
925 err_fns_check();
926 if (pid == 0)
927 pid=(unsigned long)CRYPTO_thread_id();
928 tmp.pid=pid;
929 /* thread_del_item automatically destroys the LHASH if the number of
930 * items reaches zero. */
931 ERRFN(thread_del_item)(&tmp);
932 }
933
934ERR_STATE *ERR_get_state(void)
935 {
936 static ERR_STATE fallback;
937 ERR_STATE *ret,tmp,*tmpp=NULL;
938 int i;
939 unsigned long pid;
940
941 err_fns_check();
942 pid=(unsigned long)CRYPTO_thread_id();
943 tmp.pid=pid;
944 ret=ERRFN(thread_get_item)(&tmp);
945
946 /* ret == the error state, if NULL, make a new one */
947 if (ret == NULL)
948 {
949 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE));
950 if (ret == NULL) return(&fallback);
951 ret->pid=pid;
952 ret->top=0;
953 ret->bottom=0;
954 for (i=0; i<ERR_NUM_ERRORS; i++)
955 {
956 ret->err_data[i]=NULL;
957 ret->err_data_flags[i]=0;
958 }
959 tmpp = ERRFN(thread_set_item)(ret);
960 /* To check if insertion failed, do a get. */
961 if (ERRFN(thread_get_item)(ret) != ret)
962 {
963 ERR_STATE_free(ret); /* could not insert it */
964 return(&fallback);
965 }
966 /* If a race occured in this function and we came second, tmpp
967 * is the first one that we just replaced. */
968 if (tmpp)
969 ERR_STATE_free(tmpp);
970 }
971 return ret;
972 }
973
974int ERR_get_next_error_library(void)
975 {
976 err_fns_check();
977 return ERRFN(get_next_lib)();
978 }
979
980void ERR_set_error_data(char *data, int flags)
981 {
982 ERR_STATE *es;
983 int i;
984
985 es=ERR_get_state();
986
987 i=es->top;
988 if (i == 0)
989 i=ERR_NUM_ERRORS-1;
990
991 err_clear_data(es,i);
992 es->err_data[i]=data;
993 es->err_data_flags[i]=flags;
994 }
995
996void ERR_add_error_data(int num, ...)
997 {
998 va_list args;
999 int i,n,s;
1000 char *str,*p,*a;
1001
1002 s=80;
1003 str=OPENSSL_malloc(s+1);
1004 if (str == NULL) return;
1005 str[0]='\0';
1006
1007 va_start(args, num);
1008 n=0;
1009 for (i=0; i<num; i++)
1010 {
1011 a=va_arg(args, char*);
1012 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
1013 if (a != NULL)
1014 {
1015 n+=strlen(a);
1016 if (n > s)
1017 {
1018 s=n+20;
1019 p=OPENSSL_realloc(str,s+1);
1020 if (p == NULL)
1021 {
1022 OPENSSL_free(str);
1023 goto err;
1024 }
1025 else
1026 str=p;
1027 }
1028 strlcat(str,a,s+1);
1029 }
1030 }
1031 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING);
1032
1033err:
1034 va_end(args);
1035 }
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-04-26 20:32:07 +0000