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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{ERR_PACK(ERR_LIB_FIPS,0,0) ,"FIPS routines"},
153{0,NULL},
154 };
155
156static ERR_STRING_DATA ERR_str_functs[]=
157 {
158 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"},
159 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"},
160 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"},
161 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"},
162 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"},
163 {ERR_PACK(0,SYS_F_BIND,0), "bind"},
164 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"},
165 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"},
166#ifdef OPENSSL_SYS_WINDOWS
167 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"},
168#endif
169 {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"},
170 {ERR_PACK(0,SYS_F_FREAD,0), "fread"},
171 {ERR_PACK(0,SYS_F_GETADDRINFO,0), "getaddrinfo"},
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
214{0,NULL},
215 };
216#endif
217
218
219/* Define the predeclared (but externally opaque) "ERR_FNS" type */
220struct st_ERR_FNS
221 {
222 /* Works on the "error_hash" string table */
223 LHASH *(*cb_err_get)(int create);
224 void (*cb_err_del)(void);
225 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *);
226 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *);
227 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *);
228 /* Works on the "thread_hash" error-state table */
229 LHASH *(*cb_thread_get)(int create);
230 void (*cb_thread_release)(LHASH **hash);
231 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *);
232 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *);
233 void (*cb_thread_del_item)(const ERR_STATE *);
234 /* Returns the next available error "library" numbers */
235 int (*cb_get_next_lib)(void);
236 };
237
238/* Predeclarations of the "err_defaults" functions */
239static LHASH *int_err_get(int create);
240static void int_err_del(void);
241static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
242static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *);
243static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *);
244static LHASH *int_thread_get(int create);
245static void int_thread_release(LHASH **hash);
246static ERR_STATE *int_thread_get_item(const ERR_STATE *);
247static ERR_STATE *int_thread_set_item(ERR_STATE *);
248static void int_thread_del_item(const ERR_STATE *);
249static int int_err_get_next_lib(void);
250/* The static ERR_FNS table using these defaults functions */
251static const ERR_FNS err_defaults =
252 {
253 int_err_get,
254 int_err_del,
255 int_err_get_item,
256 int_err_set_item,
257 int_err_del_item,
258 int_thread_get,
259 int_thread_release,
260 int_thread_get_item,
261 int_thread_set_item,
262 int_thread_del_item,
263 int_err_get_next_lib
264 };
265
266/* The replacable table of ERR_FNS functions we use at run-time */
267static const ERR_FNS *err_fns = NULL;
268
269/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */
270#define ERRFN(a) err_fns->cb_##a
271
272/* The internal state used by "err_defaults" - as such, the setting, reading,
273 * creating, and deleting of this data should only be permitted via the
274 * "err_defaults" functions. This way, a linked module can completely defer all
275 * ERR state operation (together with requisite locking) to the implementations
276 * and state in the loading application. */
277static LHASH *int_error_hash = NULL;
278static LHASH *int_thread_hash = NULL;
279static int int_thread_hash_references = 0;
280static int int_err_library_number= ERR_LIB_USER;
281
282/* Internal function that checks whether "err_fns" is set and if not, sets it to
283 * the defaults. */
284static void err_fns_check(void)
285 {
286 if (err_fns) return;
287
288 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
289 if (!err_fns)
290 err_fns = &err_defaults;
291 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
292 }
293
294/* API functions to get or set the underlying ERR functions. */
295
296const ERR_FNS *ERR_get_implementation(void)
297 {
298 err_fns_check();
299 return err_fns;
300 }
301
302int ERR_set_implementation(const ERR_FNS *fns)
303 {
304 int ret = 0;
305
306 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
307 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting
308 * an error is there?! */
309 if (!err_fns)
310 {
311 err_fns = fns;
312 ret = 1;
313 }
314 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
315 return ret;
316 }
317
318/* These are the callbacks provided to "lh_new()" when creating the LHASH tables
319 * internal to the "err_defaults" implementation. */
320
321/* static unsigned long err_hash(ERR_STRING_DATA *a); */
322static unsigned long err_hash(const void *a_void);
323/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */
324static int err_cmp(const void *a_void, const void *b_void);
325/* static unsigned long pid_hash(ERR_STATE *pid); */
326static unsigned long pid_hash(const void *pid_void);
327/* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */
328static int pid_cmp(const void *a_void,const void *pid_void);
329static unsigned long get_error_values(int inc,int top,const char **file,int *line,
330 const char **data,int *flags);
331
332/* The internal functions used in the "err_defaults" implementation */
333
334static LHASH *int_err_get(int create)
335 {
336 LHASH *ret = NULL;
337
338 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
339 if (!int_error_hash && create)
340 {
341 CRYPTO_push_info("int_err_get (err.c)");
342 int_error_hash = lh_new(err_hash, err_cmp);
343 CRYPTO_pop_info();
344 }
345 if (int_error_hash)
346 ret = int_error_hash;
347 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
348
349 return ret;
350 }
351
352static void int_err_del(void)
353 {
354 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
355 if (int_error_hash)
356 {
357 lh_free(int_error_hash);
358 int_error_hash = NULL;
359 }
360 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
361 }
362
363static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
364 {
365 ERR_STRING_DATA *p;
366 LHASH *hash;
367
368 err_fns_check();
369 hash = ERRFN(err_get)(0);
370 if (!hash)
371 return NULL;
372
373 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
374 p = (ERR_STRING_DATA *)lh_retrieve(hash, d);
375 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
376
377 return p;
378 }
379
380static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d)
381 {
382 ERR_STRING_DATA *p;
383 LHASH *hash;
384
385 err_fns_check();
386 hash = ERRFN(err_get)(1);
387 if (!hash)
388 return NULL;
389
390 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
391 p = (ERR_STRING_DATA *)lh_insert(hash, d);
392 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
393
394 return p;
395 }
396
397static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d)
398 {
399 ERR_STRING_DATA *p;
400 LHASH *hash;
401
402 err_fns_check();
403 hash = ERRFN(err_get)(0);
404 if (!hash)
405 return NULL;
406
407 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
408 p = (ERR_STRING_DATA *)lh_delete(hash, d);
409 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
410
411 return p;
412 }
413
414static LHASH *int_thread_get(int create)
415 {
416 LHASH *ret = NULL;
417
418 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
419 if (!int_thread_hash && create)
420 {
421 CRYPTO_push_info("int_thread_get (err.c)");
422 int_thread_hash = lh_new(pid_hash, pid_cmp);
423 CRYPTO_pop_info();
424 }
425 if (int_thread_hash)
426 {
427 int_thread_hash_references++;
428 ret = int_thread_hash;
429 }
430 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
431 return ret;
432 }
433
434static void int_thread_release(LHASH **hash)
435 {
436 int i;
437
438 if (hash == NULL || *hash == NULL)
439 return;
440
441 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR);
442
443#ifdef REF_PRINT
444 fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR");
445#endif
446 if (i > 0) return;
447#ifdef REF_CHECK
448 if (i < 0)
449 {
450 fprintf(stderr,"int_thread_release, bad reference count\n");
451 abort(); /* ok */
452 }
453#endif
454 *hash = NULL;
455 }
456
457static ERR_STATE *int_thread_get_item(const ERR_STATE *d)
458 {
459 ERR_STATE *p;
460 LHASH *hash;
461
462 err_fns_check();
463 hash = ERRFN(thread_get)(0);
464 if (!hash)
465 return NULL;
466
467 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
468 p = (ERR_STATE *)lh_retrieve(hash, d);
469 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
470
471 ERRFN(thread_release)(&hash);
472 return p;
473 }
474
475static ERR_STATE *int_thread_set_item(ERR_STATE *d)
476 {
477 ERR_STATE *p;
478 LHASH *hash;
479
480 err_fns_check();
481 hash = ERRFN(thread_get)(1);
482 if (!hash)
483 return NULL;
484
485 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
486 p = (ERR_STATE *)lh_insert(hash, d);
487 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
488
489 ERRFN(thread_release)(&hash);
490 return p;
491 }
492
493static void int_thread_del_item(const ERR_STATE *d)
494 {
495 ERR_STATE *p;
496 LHASH *hash;
497
498 err_fns_check();
499 hash = ERRFN(thread_get)(0);
500 if (!hash)
501 return;
502
503 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
504 p = (ERR_STATE *)lh_delete(hash, d);
505 /* make sure we don't leak memory */
506 if (int_thread_hash_references == 1
507 && int_thread_hash && (lh_num_items(int_thread_hash) == 0))
508 {
509 lh_free(int_thread_hash);
510 int_thread_hash = NULL;
511 }
512 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
513
514 ERRFN(thread_release)(&hash);
515 if (p)
516 ERR_STATE_free(p);
517 }
518
519static int int_err_get_next_lib(void)
520 {
521 int ret;
522
523 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
524 ret = int_err_library_number++;
525 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
526
527 return ret;
528 }
529
530
531#ifndef OPENSSL_NO_ERR
532#define NUM_SYS_STR_REASONS 127
533#define LEN_SYS_STR_REASON 32
534
535static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
536/* SYS_str_reasons is filled with copies of strerror() results at
537 * initialization.
538 * 'errno' values up to 127 should cover all usual errors,
539 * others will be displayed numerically by ERR_error_string.
540 * It is crucial that we have something for each reason code
541 * that occurs in ERR_str_reasons, or bogus reason strings
542 * will be returned for SYSerr(), which always gets an errno
543 * value and never one of those 'standard' reason codes. */
544
545static void build_SYS_str_reasons()
546 {
547 /* OPENSSL_malloc cannot be used here, use static storage instead */
548 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
549 int i;
550 static int init = 1;
551
552 if (!init) return;
553
554 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
555
556 for (i = 1; i <= NUM_SYS_STR_REASONS; i++)
557 {
558 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
559
560 str->error = (unsigned long)i;
561 if (str->string == NULL)
562 {
563 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]);
564 char *src = strerror(i);
565 if (src != NULL)
566 {
567 strncpy(*dest, src, sizeof *dest);
568 (*dest)[sizeof *dest - 1] = '\0';
569 str->string = *dest;
570 }
571 }
572 if (str->string == NULL)
573 str->string = "unknown";
574 }
575
576 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL},
577 * as required by ERR_load_strings. */
578
579 init = 0;
580
581 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
582 }
583#endif
584
585#define err_clear_data(p,i) \
586 if (((p)->err_data[i] != NULL) && \
587 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
588 { \
589 OPENSSL_free((p)->err_data[i]); \
590 (p)->err_data[i]=NULL; \
591 } \
592 (p)->err_data_flags[i]=0;
593
594static void ERR_STATE_free(ERR_STATE *s)
595 {
596 int i;
597
598 if (s == NULL)
599 return;
600
601 for (i=0; i<ERR_NUM_ERRORS; i++)
602 {
603 err_clear_data(s,i);
604 }
605 OPENSSL_free(s);
606 }
607
608void ERR_load_ERR_strings(void)
609 {
610 err_fns_check();
611#ifndef OPENSSL_NO_ERR
612 err_load_strings(0,ERR_str_libraries);
613 err_load_strings(0,ERR_str_reasons);
614 err_load_strings(ERR_LIB_SYS,ERR_str_functs);
615 build_SYS_str_reasons();
616 err_load_strings(ERR_LIB_SYS,SYS_str_reasons);
617#endif
618 }
619
620static void err_load_strings(int lib, ERR_STRING_DATA *str)
621 {
622 while (str->error)
623 {
624 if (lib)
625 str->error|=ERR_PACK(lib,0,0);
626 ERRFN(err_set_item)(str);
627 str++;
628 }
629 }
630
631void ERR_load_strings(int lib, ERR_STRING_DATA *str)
632 {
633 ERR_load_ERR_strings();
634 err_load_strings(lib, str);
635 }
636
637void ERR_unload_strings(int lib, ERR_STRING_DATA *str)
638 {
639 while (str->error)
640 {
641 if (lib)
642 str->error|=ERR_PACK(lib,0,0);
643 ERRFN(err_del_item)(str);
644 str++;
645 }
646 }
647
648void ERR_free_strings(void)
649 {
650 err_fns_check();
651 ERRFN(err_del)();
652 }
653
654/********************************************************/
655
656void ERR_put_error(int lib, int func, int reason, const char *file,
657 int line)
658 {
659 ERR_STATE *es;
660
661#ifdef _OSD_POSIX
662 /* In the BS2000-OSD POSIX subsystem, the compiler generates
663 * path names in the form "*POSIX(/etc/passwd)".
664 * This dirty hack strips them to something sensible.
665 * @@@ We shouldn't modify a const string, though.
666 */
667 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) {
668 char *end;
669
670 /* Skip the "*POSIX(" prefix */
671 file += sizeof("*POSIX(")-1;
672 end = &file[strlen(file)-1];
673 if (*end == ')')
674 *end = '\0';
675 /* Optional: use the basename of the path only. */
676 if ((end = strrchr(file, '/')) != NULL)
677 file = &end[1];
678 }
679#endif
680 es=ERR_get_state();
681
682 es->top=(es->top+1)%ERR_NUM_ERRORS;
683 if (es->top == es->bottom)
684 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
685 es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
686 es->err_file[es->top]=file;
687 es->err_line[es->top]=line;
688 err_clear_data(es,es->top);
689 }
690
691void ERR_clear_error(void)
692 {
693 int i;
694 ERR_STATE *es;
695
696 es=ERR_get_state();
697
698 for (i=0; i<ERR_NUM_ERRORS; i++)
699 {
700 es->err_buffer[i]=0;
701 err_clear_data(es,i);
702 es->err_file[i]=NULL;
703 es->err_line[i]= -1;
704 }
705 es->top=es->bottom=0;
706 }
707
708
709unsigned long ERR_get_error(void)
710 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); }
711
712unsigned long ERR_get_error_line(const char **file,
713 int *line)
714 { return(get_error_values(1,0,file,line,NULL,NULL)); }
715
716unsigned long ERR_get_error_line_data(const char **file, int *line,
717 const char **data, int *flags)
718 { return(get_error_values(1,0,file,line,data,flags)); }
719
720
721unsigned long ERR_peek_error(void)
722 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); }
723
724unsigned long ERR_peek_error_line(const char **file, int *line)
725 { return(get_error_values(0,0,file,line,NULL,NULL)); }
726
727unsigned long ERR_peek_error_line_data(const char **file, int *line,
728 const char **data, int *flags)
729 { return(get_error_values(0,0,file,line,data,flags)); }
730
731
732unsigned long ERR_peek_last_error(void)
733 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); }
734
735unsigned long ERR_peek_last_error_line(const char **file, int *line)
736 { return(get_error_values(0,1,file,line,NULL,NULL)); }
737
738unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
739 const char **data, int *flags)
740 { return(get_error_values(0,1,file,line,data,flags)); }
741
742
743static unsigned long get_error_values(int inc, int top, const char **file, int *line,
744 const char **data, int *flags)
745 {
746 int i=0;
747 ERR_STATE *es;
748 unsigned long ret;
749
750 es=ERR_get_state();
751
752 if (inc && top)
753 {
754 if (file) *file = "";
755 if (line) *line = 0;
756 if (data) *data = "";
757 if (flags) *flags = 0;
758
759 return ERR_R_INTERNAL_ERROR;
760 }
761
762 if (es->bottom == es->top) return 0;
763 if (top)
764 i=es->top; /* last error */
765 else
766 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */
767
768 ret=es->err_buffer[i];
769 if (inc)
770 {
771 es->bottom=i;
772 es->err_buffer[i]=0;
773 }
774
775 if ((file != NULL) && (line != NULL))
776 {
777 if (es->err_file[i] == NULL)
778 {
779 *file="NA";
780 if (line != NULL) *line=0;
781 }
782 else
783 {
784 *file=es->err_file[i];
785 if (line != NULL) *line=es->err_line[i];
786 }
787 }
788
789 if (data == NULL)
790 {
791 if (inc)
792 {
793 err_clear_data(es, i);
794 }
795 }
796 else
797 {
798 if (es->err_data[i] == NULL)
799 {
800 *data="";
801 if (flags != NULL) *flags=0;
802 }
803 else
804 {
805 *data=es->err_data[i];
806 if (flags != NULL) *flags=es->err_data_flags[i];
807 }
808 }
809 return ret;
810 }
811
812void ERR_error_string_n(unsigned long e, char *buf, size_t len)
813 {
814 char lsbuf[64], fsbuf[64], rsbuf[64];
815 const char *ls,*fs,*rs;
816 unsigned long l,f,r;
817
818 l=ERR_GET_LIB(e);
819 f=ERR_GET_FUNC(e);
820 r=ERR_GET_REASON(e);
821
822 ls=ERR_lib_error_string(e);
823 fs=ERR_func_error_string(e);
824 rs=ERR_reason_error_string(e);
825
826 if (ls == NULL)
827 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
828 if (fs == NULL)
829 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
830 if (rs == NULL)
831 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
832
833 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf,
834 fs?fs:fsbuf, rs?rs:rsbuf);
835 if (strlen(buf) == len-1)
836 {
837 /* output may be truncated; make sure we always have 5
838 * colon-separated fields, i.e. 4 colons ... */
839#define NUM_COLONS 4
840 if (len > NUM_COLONS) /* ... if possible */
841 {
842 int i;
843 char *s = buf;
844
845 for (i = 0; i < NUM_COLONS; i++)
846 {
847 char *colon = strchr(s, ':');
848 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i)
849 {
850 /* set colon no. i at last possible position
851 * (buf[len-1] is the terminating 0)*/
852 colon = &buf[len-1] - NUM_COLONS + i;
853 *colon = ':';
854 }
855 s = colon + 1;
856 }
857 }
858 }
859 }
860
861/* BAD for multi-threading: uses a local buffer if ret == NULL */
862/* ERR_error_string_n should be used instead for ret != NULL
863 * as ERR_error_string cannot know how large the buffer is */
864char *ERR_error_string(unsigned long e, char *ret)
865 {
866 static char buf[256];
867
868 if (ret == NULL) ret=buf;
869 ERR_error_string_n(e, ret, 256);
870
871 return ret;
872 }
873
874LHASH *ERR_get_string_table(void)
875 {
876 err_fns_check();
877 return ERRFN(err_get)(0);
878 }
879
880LHASH *ERR_get_err_state_table(void)
881 {
882 err_fns_check();
883 return ERRFN(thread_get)(0);
884 }
885
886void ERR_release_err_state_table(LHASH **hash)
887 {
888 err_fns_check();
889 ERRFN(thread_release)(hash);
890 }
891
892const char *ERR_lib_error_string(unsigned long e)
893 {
894 ERR_STRING_DATA d,*p;
895 unsigned long l;
896
897 err_fns_check();
898 l=ERR_GET_LIB(e);
899 d.error=ERR_PACK(l,0,0);
900 p=ERRFN(err_get_item)(&d);
901 return((p == NULL)?NULL:p->string);
902 }
903
904const char *ERR_func_error_string(unsigned long e)
905 {
906 ERR_STRING_DATA d,*p;
907 unsigned long l,f;
908
909 err_fns_check();
910 l=ERR_GET_LIB(e);
911 f=ERR_GET_FUNC(e);
912 d.error=ERR_PACK(l,f,0);
913 p=ERRFN(err_get_item)(&d);
914 return((p == NULL)?NULL:p->string);
915 }
916
917const char *ERR_reason_error_string(unsigned long e)
918 {
919 ERR_STRING_DATA d,*p=NULL;
920 unsigned long l,r;
921
922 err_fns_check();
923 l=ERR_GET_LIB(e);
924 r=ERR_GET_REASON(e);
925 d.error=ERR_PACK(l,0,r);
926 p=ERRFN(err_get_item)(&d);
927 if (!p)
928 {
929 d.error=ERR_PACK(0,0,r);
930 p=ERRFN(err_get_item)(&d);
931 }
932 return((p == NULL)?NULL:p->string);
933 }
934
935/* static unsigned long err_hash(ERR_STRING_DATA *a) */
936static unsigned long err_hash(const void *a_void)
937 {
938 unsigned long ret,l;
939
940 l=((ERR_STRING_DATA *)a_void)->error;
941 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
942 return(ret^ret%19*13);
943 }
944
945/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */
946static int err_cmp(const void *a_void, const void *b_void)
947 {
948 return((int)(((ERR_STRING_DATA *)a_void)->error -
949 ((ERR_STRING_DATA *)b_void)->error));
950 }
951
952/* static unsigned long pid_hash(ERR_STATE *a) */
953static unsigned long pid_hash(const void *a_void)
954 {
955 return(((ERR_STATE *)a_void)->pid*13);
956 }
957
958/* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */
959static int pid_cmp(const void *a_void, const void *b_void)
960 {
961 return((int)((long)((ERR_STATE *)a_void)->pid -
962 (long)((ERR_STATE *)b_void)->pid));
963 }
964
965void ERR_remove_state(unsigned long pid)
966 {
967 ERR_STATE tmp;
968
969 err_fns_check();
970 if (pid == 0)
971 pid=(unsigned long)CRYPTO_thread_id();
972 tmp.pid=pid;
973 /* thread_del_item automatically destroys the LHASH if the number of
974 * items reaches zero. */
975 ERRFN(thread_del_item)(&tmp);
976 }
977
978ERR_STATE *ERR_get_state(void)
979 {
980 static ERR_STATE fallback;
981 ERR_STATE *ret,tmp,*tmpp=NULL;
982 int i;
983 unsigned long pid;
984
985 err_fns_check();
986 pid=(unsigned long)CRYPTO_thread_id();
987 tmp.pid=pid;
988 ret=ERRFN(thread_get_item)(&tmp);
989
990 /* ret == the error state, if NULL, make a new one */
991 if (ret == NULL)
992 {
993 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE));
994 if (ret == NULL) return(&fallback);
995 ret->pid=pid;
996 ret->top=0;
997 ret->bottom=0;
998 for (i=0; i<ERR_NUM_ERRORS; i++)
999 {
1000 ret->err_data[i]=NULL;
1001 ret->err_data_flags[i]=0;
1002 }
1003 tmpp = ERRFN(thread_set_item)(ret);
1004 /* To check if insertion failed, do a get. */
1005 if (ERRFN(thread_get_item)(ret) != ret)
1006 {
1007 ERR_STATE_free(ret); /* could not insert it */
1008 return(&fallback);
1009 }
1010 /* If a race occured in this function and we came second, tmpp
1011 * is the first one that we just replaced. */
1012 if (tmpp)
1013 ERR_STATE_free(tmpp);
1014 }
1015 return ret;
1016 }
1017
1018int ERR_get_next_error_library(void)
1019 {
1020 err_fns_check();
1021 return ERRFN(get_next_lib)();
1022 }
1023
1024void ERR_set_error_data(char *data, int flags)
1025 {
1026 ERR_STATE *es;
1027 int i;
1028
1029 es=ERR_get_state();
1030
1031 i=es->top;
1032 if (i == 0)
1033 i=ERR_NUM_ERRORS-1;
1034
1035 err_clear_data(es,i);
1036 es->err_data[i]=data;
1037 es->err_data_flags[i]=flags;
1038 }
1039
1040void ERR_add_error_data(int num, ...)
1041 {
1042 va_list args;
1043 int i,n,s;
1044 char *str,*p,*a;
1045
1046 s=80;
1047 str=OPENSSL_malloc(s+1);
1048 if (str == NULL) return;
1049 str[0]='\0';
1050
1051 va_start(args, num);
1052 n=0;
1053 for (i=0; i<num; i++)
1054 {
1055 a=va_arg(args, char*);
1056 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
1057 if (a != NULL)
1058 {
1059 n+=strlen(a);
1060 if (n > s)
1061 {
1062 s=n+20;
1063 p=OPENSSL_realloc(str,s+1);
1064 if (p == NULL)
1065 {
1066 OPENSSL_free(str);
1067 goto err;
1068 }
1069 else
1070 str=p;
1071 }
1072 BUF_strlcat(str,a,s+1);
1073 }
1074 }
1075 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING);
1076
1077err:
1078 va_end(args);
1079 }
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