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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 void (*cb_thread_release)(LHASH **hash);
229 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *);
230 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *);
231 void (*cb_thread_del_item)(const ERR_STATE *);
232 /* Returns the next available error "library" numbers */
233 int (*cb_get_next_lib)(void);
234 };
235
236/* Predeclarations of the "err_defaults" functions */
237static LHASH *int_err_get(int create);
238static void int_err_del(void);
239static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
240static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *);
241static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *);
242static LHASH *int_thread_get(int create);
243static void int_thread_release(LHASH **hash);
244static ERR_STATE *int_thread_get_item(const ERR_STATE *);
245static ERR_STATE *int_thread_set_item(ERR_STATE *);
246static void int_thread_del_item(const ERR_STATE *);
247static int int_err_get_next_lib(void);
248/* The static ERR_FNS table using these defaults functions */
249static const ERR_FNS err_defaults =
250 {
251 int_err_get,
252 int_err_del,
253 int_err_get_item,
254 int_err_set_item,
255 int_err_del_item,
256 int_thread_get,
257 int_thread_release,
258 int_thread_get_item,
259 int_thread_set_item,
260 int_thread_del_item,
261 int_err_get_next_lib
262 };
263
264/* The replacable table of ERR_FNS functions we use at run-time */
265static const ERR_FNS *err_fns = NULL;
266
267/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */
268#define ERRFN(a) err_fns->cb_##a
269
270/* The internal state used by "err_defaults" - as such, the setting, reading,
271 * creating, and deleting of this data should only be permitted via the
272 * "err_defaults" functions. This way, a linked module can completely defer all
273 * ERR state operation (together with requisite locking) to the implementations
274 * and state in the loading application. */
275static LHASH *int_error_hash = NULL;
276static LHASH *int_thread_hash = NULL;
277static int int_thread_hash_references = 0;
278static int int_err_library_number= ERR_LIB_USER;
279
280/* Internal function that checks whether "err_fns" is set and if not, sets it to
281 * the defaults. */
282static void err_fns_check(void)
283 {
284 if (err_fns) return;
285
286 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
287 if (!err_fns)
288 err_fns = &err_defaults;
289 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
290 }
291
292/* API functions to get or set the underlying ERR functions. */
293
294const ERR_FNS *ERR_get_implementation(void)
295 {
296 err_fns_check();
297 return err_fns;
298 }
299
300int ERR_set_implementation(const ERR_FNS *fns)
301 {
302 int ret = 0;
303
304 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
305 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting
306 * an error is there?! */
307 if (!err_fns)
308 {
309 err_fns = fns;
310 ret = 1;
311 }
312 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
313 return ret;
314 }
315
316/* These are the callbacks provided to "lh_new()" when creating the LHASH tables
317 * internal to the "err_defaults" implementation. */
318
319/* static unsigned long err_hash(ERR_STRING_DATA *a); */
320static unsigned long err_hash(const void *a_void);
321/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */
322static int err_cmp(const void *a_void, const void *b_void);
323/* static unsigned long pid_hash(ERR_STATE *pid); */
324static unsigned long pid_hash(const void *pid_void);
325/* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */
326static int pid_cmp(const void *a_void,const void *pid_void);
327static unsigned long get_error_values(int inc,int top,const char **file,int *line,
328 const char **data,int *flags);
329
330/* The internal functions used in the "err_defaults" implementation */
331
332static LHASH *int_err_get(int create)
333 {
334 LHASH *ret = NULL;
335
336 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
337 if (!int_error_hash && create)
338 {
339 CRYPTO_push_info("int_err_get (err.c)");
340 int_error_hash = lh_new(err_hash, err_cmp);
341 CRYPTO_pop_info();
342 }
343 if (int_error_hash)
344 ret = int_error_hash;
345 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
346
347 return ret;
348 }
349
350static void int_err_del(void)
351 {
352 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
353 if (int_error_hash)
354 {
355 lh_free(int_error_hash);
356 int_error_hash = NULL;
357 }
358 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
359 }
360
361static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
362 {
363 ERR_STRING_DATA *p;
364 LHASH *hash;
365
366 err_fns_check();
367 hash = ERRFN(err_get)(0);
368 if (!hash)
369 return NULL;
370
371 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
372 p = (ERR_STRING_DATA *)lh_retrieve(hash, d);
373 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
374
375 return p;
376 }
377
378static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d)
379 {
380 ERR_STRING_DATA *p;
381 LHASH *hash;
382
383 err_fns_check();
384 hash = ERRFN(err_get)(1);
385 if (!hash)
386 return NULL;
387
388 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
389 p = (ERR_STRING_DATA *)lh_insert(hash, d);
390 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
391
392 return p;
393 }
394
395static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d)
396 {
397 ERR_STRING_DATA *p;
398 LHASH *hash;
399
400 err_fns_check();
401 hash = ERRFN(err_get)(0);
402 if (!hash)
403 return NULL;
404
405 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
406 p = (ERR_STRING_DATA *)lh_delete(hash, d);
407 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
408
409 return p;
410 }
411
412static LHASH *int_thread_get(int create)
413 {
414 LHASH *ret = NULL;
415
416 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
417 if (!int_thread_hash && create)
418 {
419 CRYPTO_push_info("int_thread_get (err.c)");
420 int_thread_hash = lh_new(pid_hash, pid_cmp);
421 CRYPTO_pop_info();
422 }
423 if (int_thread_hash)
424 {
425 int_thread_hash_references++;
426 ret = int_thread_hash;
427 }
428 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
429 return ret;
430 }
431
432static void int_thread_release(LHASH **hash)
433 {
434 int i;
435
436 if (hash == NULL || *hash == NULL)
437 return;
438
439 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR);
440
441#ifdef REF_PRINT
442 fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR");
443#endif
444 if (i > 0) return;
445#ifdef REF_CHECK
446 if (i < 0)
447 {
448 fprintf(stderr,"int_thread_release, bad reference count\n");
449 abort(); /* ok */
450 }
451#endif
452 *hash = NULL;
453 }
454
455static ERR_STATE *int_thread_get_item(const ERR_STATE *d)
456 {
457 ERR_STATE *p;
458 LHASH *hash;
459
460 err_fns_check();
461 hash = ERRFN(thread_get)(0);
462 if (!hash)
463 return NULL;
464
465 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
466 p = (ERR_STATE *)lh_retrieve(hash, d);
467 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
468
469 ERRFN(thread_release)(&hash);
470 return p;
471 }
472
473static ERR_STATE *int_thread_set_item(ERR_STATE *d)
474 {
475 ERR_STATE *p;
476 LHASH *hash;
477
478 err_fns_check();
479 hash = ERRFN(thread_get)(1);
480 if (!hash)
481 return NULL;
482
483 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
484 p = (ERR_STATE *)lh_insert(hash, d);
485 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
486
487 ERRFN(thread_release)(&hash);
488 return p;
489 }
490
491static void int_thread_del_item(const ERR_STATE *d)
492 {
493 ERR_STATE *p;
494 LHASH *hash;
495
496 err_fns_check();
497 hash = ERRFN(thread_get)(0);
498 if (!hash)
499 return;
500
501 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
502 p = (ERR_STATE *)lh_delete(hash, d);
503 /* make sure we don't leak memory */
504 if (int_thread_hash_references == 1
505 && int_thread_hash && (lh_num_items(int_thread_hash) == 0))
506 {
507 lh_free(int_thread_hash);
508 int_thread_hash = NULL;
509 }
510 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
511
512 ERRFN(thread_release)(&hash);
513 if (p)
514 ERR_STATE_free(p);
515 }
516
517static int int_err_get_next_lib(void)
518 {
519 int ret;
520
521 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
522 ret = int_err_library_number++;
523 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
524
525 return ret;
526 }
527
528
529#ifndef OPENSSL_NO_ERR
530#define NUM_SYS_STR_REASONS 127
531#define LEN_SYS_STR_REASON 32
532
533static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
534/* SYS_str_reasons is filled with copies of strerror() results at
535 * initialization.
536 * 'errno' values up to 127 should cover all usual errors,
537 * others will be displayed numerically by ERR_error_string.
538 * It is crucial that we have something for each reason code
539 * that occurs in ERR_str_reasons, or bogus reason strings
540 * will be returned for SYSerr(), which always gets an errno
541 * value and never one of those 'standard' reason codes. */
542
543static void build_SYS_str_reasons()
544 {
545 /* OPENSSL_malloc cannot be used here, use static storage instead */
546 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
547 int i;
548 static int init = 1;
549
550 if (!init) return;
551
552 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
553
554 for (i = 1; i <= NUM_SYS_STR_REASONS; i++)
555 {
556 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
557
558 str->error = (unsigned long)i;
559 if (str->string == NULL)
560 {
561 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]);
562 char *src = strerror(i);
563 if (src != NULL)
564 {
565 strncpy(*dest, src, sizeof *dest);
566 (*dest)[sizeof *dest - 1] = '\0';
567 str->string = *dest;
568 }
569 }
570 if (str->string == NULL)
571 str->string = "unknown";
572 }
573
574 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL},
575 * as required by ERR_load_strings. */
576
577 init = 0;
578
579 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
580 }
581#endif
582
583#define err_clear_data(p,i) \
584 if (((p)->err_data[i] != NULL) && \
585 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
586 { \
587 OPENSSL_free((p)->err_data[i]); \
588 (p)->err_data[i]=NULL; \
589 } \
590 (p)->err_data_flags[i]=0;
591
592static void ERR_STATE_free(ERR_STATE *s)
593 {
594 int i;
595
596 if (s == NULL)
597 return;
598
599 for (i=0; i<ERR_NUM_ERRORS; i++)
600 {
601 err_clear_data(s,i);
602 }
603 OPENSSL_free(s);
604 }
605
606void ERR_load_ERR_strings(void)
607 {
608 err_fns_check();
609#ifndef OPENSSL_NO_ERR
610 err_load_strings(0,ERR_str_libraries);
611 err_load_strings(0,ERR_str_reasons);
612 err_load_strings(ERR_LIB_SYS,ERR_str_functs);
613 build_SYS_str_reasons();
614 err_load_strings(ERR_LIB_SYS,SYS_str_reasons);
615#endif
616 }
617
618static void err_load_strings(int lib, ERR_STRING_DATA *str)
619 {
620 while (str->error)
621 {
622 str->error|=ERR_PACK(lib,0,0);
623 ERRFN(err_set_item)(str);
624 str++;
625 }
626 }
627
628void ERR_load_strings(int lib, ERR_STRING_DATA *str)
629 {
630 ERR_load_ERR_strings();
631 err_load_strings(lib, str);
632 }
633
634void ERR_unload_strings(int lib, ERR_STRING_DATA *str)
635 {
636 while (str->error)
637 {
638 str->error|=ERR_PACK(lib,0,0);
639 ERRFN(err_del_item)(str);
640 str++;
641 }
642 }
643
644void ERR_free_strings(void)
645 {
646 err_fns_check();
647 ERRFN(err_del)();
648 }
649
650/********************************************************/
651
652void ERR_put_error(int lib, int func, int reason, const char *file,
653 int line)
654 {
655 ERR_STATE *es;
656
657#ifdef _OSD_POSIX
658 /* In the BS2000-OSD POSIX subsystem, the compiler generates
659 * path names in the form "*POSIX(/etc/passwd)".
660 * This dirty hack strips them to something sensible.
661 * @@@ We shouldn't modify a const string, though.
662 */
663 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) {
664 char *end;
665
666 /* Skip the "*POSIX(" prefix */
667 file += sizeof("*POSIX(")-1;
668 end = &file[strlen(file)-1];
669 if (*end == ')')
670 *end = '\0';
671 /* Optional: use the basename of the path only. */
672 if ((end = strrchr(file, '/')) != NULL)
673 file = &end[1];
674 }
675#endif
676 es=ERR_get_state();
677
678 es->top=(es->top+1)%ERR_NUM_ERRORS;
679 if (es->top == es->bottom)
680 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
681 es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
682 es->err_file[es->top]=file;
683 es->err_line[es->top]=line;
684 err_clear_data(es,es->top);
685 }
686
687void ERR_clear_error(void)
688 {
689 int i;
690 ERR_STATE *es;
691
692 es=ERR_get_state();
693
694 for (i=0; i<ERR_NUM_ERRORS; i++)
695 {
696 es->err_buffer[i]=0;
697 err_clear_data(es,i);
698 es->err_file[i]=NULL;
699 es->err_line[i]= -1;
700 }
701 es->top=es->bottom=0;
702 }
703
704
705unsigned long ERR_get_error(void)
706 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); }
707
708unsigned long ERR_get_error_line(const char **file,
709 int *line)
710 { return(get_error_values(1,0,file,line,NULL,NULL)); }
711
712unsigned long ERR_get_error_line_data(const char **file, int *line,
713 const char **data, int *flags)
714 { return(get_error_values(1,0,file,line,data,flags)); }
715
716
717unsigned long ERR_peek_error(void)
718 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); }
719
720unsigned long ERR_peek_error_line(const char **file, int *line)
721 { return(get_error_values(0,0,file,line,NULL,NULL)); }
722
723unsigned long ERR_peek_error_line_data(const char **file, int *line,
724 const char **data, int *flags)
725 { return(get_error_values(0,0,file,line,data,flags)); }
726
727
728unsigned long ERR_peek_last_error(void)
729 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); }
730
731unsigned long ERR_peek_last_error_line(const char **file, int *line)
732 { return(get_error_values(0,1,file,line,NULL,NULL)); }
733
734unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
735 const char **data, int *flags)
736 { return(get_error_values(0,1,file,line,data,flags)); }
737
738
739static unsigned long get_error_values(int inc, int top, const char **file, int *line,
740 const char **data, int *flags)
741 {
742 int i=0;
743 ERR_STATE *es;
744 unsigned long ret;
745
746 es=ERR_get_state();
747
748 if (inc && top)
749 {
750 if (file) *file = "";
751 if (line) *line = 0;
752 if (data) *data = "";
753 if (flags) *flags = 0;
754
755 return ERR_R_INTERNAL_ERROR;
756 }
757
758 if (es->bottom == es->top) return 0;
759 if (top)
760 i=es->top; /* last error */
761 else
762 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */
763
764 ret=es->err_buffer[i];
765 if (inc)
766 {
767 es->bottom=i;
768 es->err_buffer[i]=0;
769 }
770
771 if ((file != NULL) && (line != NULL))
772 {
773 if (es->err_file[i] == NULL)
774 {
775 *file="NA";
776 if (line != NULL) *line=0;
777 }
778 else
779 {
780 *file=es->err_file[i];
781 if (line != NULL) *line=es->err_line[i];
782 }
783 }
784
785 if (data == NULL)
786 {
787 if (inc)
788 {
789 err_clear_data(es, i);
790 }
791 }
792 else
793 {
794 if (es->err_data[i] == NULL)
795 {
796 *data="";
797 if (flags != NULL) *flags=0;
798 }
799 else
800 {
801 *data=es->err_data[i];
802 if (flags != NULL) *flags=es->err_data_flags[i];
803 }
804 }
805 return ret;
806 }
807
808void ERR_error_string_n(unsigned long e, char *buf, size_t len)
809 {
810 char lsbuf[64], fsbuf[64], rsbuf[64];
811 const char *ls,*fs,*rs;
812 unsigned long l,f,r;
813
814 l=ERR_GET_LIB(e);
815 f=ERR_GET_FUNC(e);
816 r=ERR_GET_REASON(e);
817
818 ls=ERR_lib_error_string(e);
819 fs=ERR_func_error_string(e);
820 rs=ERR_reason_error_string(e);
821
822 if (ls == NULL)
823 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
824 if (fs == NULL)
825 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
826 if (rs == NULL)
827 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
828
829 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf,
830 fs?fs:fsbuf, rs?rs:rsbuf);
831 if (strlen(buf) == len-1)
832 {
833 /* output may be truncated; make sure we always have 5
834 * colon-separated fields, i.e. 4 colons ... */
835#define NUM_COLONS 4
836 if (len > NUM_COLONS) /* ... if possible */
837 {
838 int i;
839 char *s = buf;
840
841 for (i = 0; i < NUM_COLONS; i++)
842 {
843 char *colon = strchr(s, ':');
844 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i)
845 {
846 /* set colon no. i at last possible position
847 * (buf[len-1] is the terminating 0)*/
848 colon = &buf[len-1] - NUM_COLONS + i;
849 *colon = ':';
850 }
851 s = colon + 1;
852 }
853 }
854 }
855 }
856
857/* BAD for multi-threading: uses a local buffer if ret == NULL */
858/* ERR_error_string_n should be used instead for ret != NULL
859 * as ERR_error_string cannot know how large the buffer is */
860char *ERR_error_string(unsigned long e, char *ret)
861 {
862 static char buf[256];
863
864 if (ret == NULL) ret=buf;
865 ERR_error_string_n(e, ret, 256);
866
867 return ret;
868 }
869
870LHASH *ERR_get_string_table(void)
871 {
872 err_fns_check();
873 return ERRFN(err_get)(0);
874 }
875
876LHASH *ERR_get_err_state_table(void)
877 {
878 err_fns_check();
879 return ERRFN(thread_get)(0);
880 }
881
882void ERR_release_err_state_table(LHASH **hash)
883 {
884 err_fns_check();
885 ERRFN(thread_release)(hash);
886 }
887
888const char *ERR_lib_error_string(unsigned long e)
889 {
890 ERR_STRING_DATA d,*p;
891 unsigned long l;
892
893 err_fns_check();
894 l=ERR_GET_LIB(e);
895 d.error=ERR_PACK(l,0,0);
896 p=ERRFN(err_get_item)(&d);
897 return((p == NULL)?NULL:p->string);
898 }
899
900const char *ERR_func_error_string(unsigned long e)
901 {
902 ERR_STRING_DATA d,*p;
903 unsigned long l,f;
904
905 err_fns_check();
906 l=ERR_GET_LIB(e);
907 f=ERR_GET_FUNC(e);
908 d.error=ERR_PACK(l,f,0);
909 p=ERRFN(err_get_item)(&d);
910 return((p == NULL)?NULL:p->string);
911 }
912
913const char *ERR_reason_error_string(unsigned long e)
914 {
915 ERR_STRING_DATA d,*p=NULL;
916 unsigned long l,r;
917
918 err_fns_check();
919 l=ERR_GET_LIB(e);
920 r=ERR_GET_REASON(e);
921 d.error=ERR_PACK(l,0,r);
922 p=ERRFN(err_get_item)(&d);
923 if (!p)
924 {
925 d.error=ERR_PACK(0,0,r);
926 p=ERRFN(err_get_item)(&d);
927 }
928 return((p == NULL)?NULL:p->string);
929 }
930
931/* static unsigned long err_hash(ERR_STRING_DATA *a) */
932static unsigned long err_hash(const void *a_void)
933 {
934 unsigned long ret,l;
935
936 l=((ERR_STRING_DATA *)a_void)->error;
937 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
938 return(ret^ret%19*13);
939 }
940
941/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */
942static int err_cmp(const void *a_void, const void *b_void)
943 {
944 return((int)(((ERR_STRING_DATA *)a_void)->error -
945 ((ERR_STRING_DATA *)b_void)->error));
946 }
947
948/* static unsigned long pid_hash(ERR_STATE *a) */
949static unsigned long pid_hash(const void *a_void)
950 {
951 return(((ERR_STATE *)a_void)->pid*13);
952 }
953
954/* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */
955static int pid_cmp(const void *a_void, const void *b_void)
956 {
957 return((int)((long)((ERR_STATE *)a_void)->pid -
958 (long)((ERR_STATE *)b_void)->pid));
959 }
960
961void ERR_remove_state(unsigned long pid)
962 {
963 ERR_STATE tmp;
964
965 err_fns_check();
966 if (pid == 0)
967 pid=(unsigned long)CRYPTO_thread_id();
968 tmp.pid=pid;
969 /* thread_del_item automatically destroys the LHASH if the number of
970 * items reaches zero. */
971 ERRFN(thread_del_item)(&tmp);
972 }
973
974ERR_STATE *ERR_get_state(void)
975 {
976 static ERR_STATE fallback;
977 ERR_STATE *ret,tmp,*tmpp=NULL;
978 int i;
979 unsigned long pid;
980
981 err_fns_check();
982 pid=(unsigned long)CRYPTO_thread_id();
983 tmp.pid=pid;
984 ret=ERRFN(thread_get_item)(&tmp);
985
986 /* ret == the error state, if NULL, make a new one */
987 if (ret == NULL)
988 {
989 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE));
990 if (ret == NULL) return(&fallback);
991 ret->pid=pid;
992 ret->top=0;
993 ret->bottom=0;
994 for (i=0; i<ERR_NUM_ERRORS; i++)
995 {
996 ret->err_data[i]=NULL;
997 ret->err_data_flags[i]=0;
998 }
999 tmpp = ERRFN(thread_set_item)(ret);
1000 /* To check if insertion failed, do a get. */
1001 if (ERRFN(thread_get_item)(ret) != ret)
1002 {
1003 ERR_STATE_free(ret); /* could not insert it */
1004 return(&fallback);
1005 }
1006 /* If a race occured in this function and we came second, tmpp
1007 * is the first one that we just replaced. */
1008 if (tmpp)
1009 ERR_STATE_free(tmpp);
1010 }
1011 return ret;
1012 }
1013
1014int ERR_get_next_error_library(void)
1015 {
1016 err_fns_check();
1017 return ERRFN(get_next_lib)();
1018 }
1019
1020void ERR_set_error_data(char *data, int flags)
1021 {
1022 ERR_STATE *es;
1023 int i;
1024
1025 es=ERR_get_state();
1026
1027 i=es->top;
1028 if (i == 0)
1029 i=ERR_NUM_ERRORS-1;
1030
1031 err_clear_data(es,i);
1032 es->err_data[i]=data;
1033 es->err_data_flags[i]=flags;
1034 }
1035
1036void ERR_add_error_data(int num, ...)
1037 {
1038 va_list args;
1039 int i,n,s;
1040 char *str,*p,*a;
1041
1042 s=80;
1043 str=OPENSSL_malloc(s+1);
1044 if (str == NULL) return;
1045 str[0]='\0';
1046
1047 va_start(args, num);
1048 n=0;
1049 for (i=0; i<num; i++)
1050 {
1051 a=va_arg(args, char*);
1052 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
1053 if (a != NULL)
1054 {
1055 n+=strlen(a);
1056 if (n > s)
1057 {
1058 s=n+20;
1059 p=OPENSSL_realloc(str,s+1);
1060 if (p == NULL)
1061 {
1062 OPENSSL_free(str);
1063 goto err;
1064 }
1065 else
1066 str=p;
1067 }
1068 BUF_strlcat(str,a,s+1);
1069 }
1070 }
1071 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING);
1072
1073err:
1074 va_end(args);
1075 }
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-20 22:43:14 +0000