1 /* crypto/err/err.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58 /* ====================================================================
59 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111
112 #include <stdio.h>
113 #include <stdarg.h>
114 #include <string.h>
115 #include "cryptlib.h"
116 #include <openssl/lhash.h>
117 #include <openssl/crypto.h>
118 #include <openssl/buffer.h>
119 #include <openssl/bio.h>
120 #include <openssl/err.h>
121
122 static void err_load_strings(int lib, ERR_STRING_DATA *str);
123
124 static void ERR_STATE_free(ERR_STATE *s);
125 #ifndef OPENSSL_NO_ERR
126 static 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_CMS,0,0) ,"CMS routines"},
153 {0,NULL},
154 };
155
156 static 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 {0,NULL},
172 };
173
174 static ERR_STRING_DATA ERR_str_reasons[]=
175 {
176 {ERR_R_SYS_LIB ,"system lib"},
177 {ERR_R_BN_LIB ,"BN lib"},
178 {ERR_R_RSA_LIB ,"RSA lib"},
179 {ERR_R_DH_LIB ,"DH lib"},
180 {ERR_R_EVP_LIB ,"EVP lib"},
181 {ERR_R_BUF_LIB ,"BUF lib"},
182 {ERR_R_OBJ_LIB ,"OBJ lib"},
183 {ERR_R_PEM_LIB ,"PEM lib"},
184 {ERR_R_DSA_LIB ,"DSA lib"},
185 {ERR_R_X509_LIB ,"X509 lib"},
186 {ERR_R_ASN1_LIB ,"ASN1 lib"},
187 {ERR_R_CONF_LIB ,"CONF lib"},
188 {ERR_R_CRYPTO_LIB ,"CRYPTO lib"},
189 {ERR_R_EC_LIB ,"EC lib"},
190 {ERR_R_SSL_LIB ,"SSL lib"},
191 {ERR_R_BIO_LIB ,"BIO lib"},
192 {ERR_R_PKCS7_LIB ,"PKCS7 lib"},
193 {ERR_R_X509V3_LIB ,"X509V3 lib"},
194 {ERR_R_PKCS12_LIB ,"PKCS12 lib"},
195 {ERR_R_RAND_LIB ,"RAND lib"},
196 {ERR_R_DSO_LIB ,"DSO lib"},
197 {ERR_R_ENGINE_LIB ,"ENGINE lib"},
198 {ERR_R_OCSP_LIB ,"OCSP lib"},
199
200 {ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"},
201 {ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"},
202 {ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"},
203 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"},
204 {ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"},
205 {ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"},
206
207 {ERR_R_FATAL ,"fatal"},
208 {ERR_R_MALLOC_FAILURE ,"malloc failure"},
209 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"},
210 {ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"},
211 {ERR_R_INTERNAL_ERROR ,"internal error"},
212 {ERR_R_DISABLED ,"called a function that was disabled at compile-time"},
213
214 {0,NULL},
215 };
216 #endif
217
218
219 /* Define the predeclared (but externally opaque) "ERR_FNS" type */
220 struct 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 */
239 static LHASH *int_err_get(int create);
240 static void int_err_del(void);
241 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
242 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *);
243 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *);
244 static LHASH *int_thread_get(int create);
245 static void int_thread_release(LHASH **hash);
246 static ERR_STATE *int_thread_get_item(const ERR_STATE *);
247 static ERR_STATE *int_thread_set_item(ERR_STATE *);
248 static void int_thread_del_item(const ERR_STATE *);
249 static int int_err_get_next_lib(void);
250 /* The static ERR_FNS table using these defaults functions */
251 static 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 */
267 static 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. */
277 static LHASH *int_error_hash = NULL;
278 static LHASH *int_thread_hash = NULL;
279 static int int_thread_hash_references = 0;
280 static 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. */
err_fns_check(void)284 static 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
ERR_get_implementation(void)296 const ERR_FNS *ERR_get_implementation(void)
297 {
298 err_fns_check();
299 return err_fns;
300 }
301
ERR_set_implementation(const ERR_FNS * fns)302 int 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); */
322 static unsigned long err_hash(const void *a_void);
323 /* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */
324 static int err_cmp(const void *a_void, const void *b_void);
325 /* static unsigned long pid_hash(ERR_STATE *pid); */
326 static unsigned long pid_hash(const void *pid_void);
327 /* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */
328 static int pid_cmp(const void *a_void,const void *pid_void);
329 static 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
int_err_get(int create)334 static 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
int_err_del(void)352 static 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
int_err_get_item(const ERR_STRING_DATA * d)363 static 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
int_err_set_item(ERR_STRING_DATA * d)380 static 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
int_err_del_item(ERR_STRING_DATA * d)397 static 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
int_thread_get(int create)414 static 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
int_thread_release(LHASH ** hash)434 static 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
int_thread_get_item(const ERR_STATE * d)457 static 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
int_thread_set_item(ERR_STATE * d)475 static 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
int_thread_del_item(const ERR_STATE * d)493 static 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
int_err_get_next_lib(void)519 static 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
535 static 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
build_SYS_str_reasons(void)545 static void build_SYS_str_reasons(void)
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 CRYPTO_r_lock(CRYPTO_LOCK_ERR);
553 if (!init)
554 {
555 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
556 return;
557 }
558
559 CRYPTO_r_unlock(CRYPTO_LOCK_ERR);
560 CRYPTO_w_lock(CRYPTO_LOCK_ERR);
561 if (!init)
562 {
563 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
564 return;
565 }
566
567 for (i = 1; i <= NUM_SYS_STR_REASONS; i++)
568 {
569 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
570
571 str->error = (unsigned long)i;
572 if (str->string == NULL)
573 {
574 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]);
575 char *src = strerror(i);
576 if (src != NULL)
577 {
578 strncpy(*dest, src, sizeof *dest);
579 (*dest)[sizeof *dest - 1] = '\0';
580 str->string = *dest;
581 }
582 }
583 if (str->string == NULL)
584 str->string = "unknown";
585 }
586
587 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL},
588 * as required by ERR_load_strings. */
589
590 init = 0;
591
592 CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
593 }
594 #endif
595
596 #define err_clear_data(p,i) \
597 do { \
598 if (((p)->err_data[i] != NULL) && \
599 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
600 { \
601 OPENSSL_free((p)->err_data[i]); \
602 (p)->err_data[i]=NULL; \
603 } \
604 (p)->err_data_flags[i]=0; \
605 } while(0)
606
607 #define err_clear(p,i) \
608 do { \
609 (p)->err_flags[i]=0; \
610 (p)->err_buffer[i]=0; \
611 err_clear_data(p,i); \
612 (p)->err_file[i]=NULL; \
613 (p)->err_line[i]= -1; \
614 } while(0)
615
ERR_STATE_free(ERR_STATE * s)616 static void ERR_STATE_free(ERR_STATE *s)
617 {
618 int i;
619
620 if (s == NULL)
621 return;
622
623 for (i=0; i<ERR_NUM_ERRORS; i++)
624 {
625 err_clear_data(s,i);
626 }
627 OPENSSL_free(s);
628 }
629
ERR_load_ERR_strings(void)630 void ERR_load_ERR_strings(void)
631 {
632 err_fns_check();
633 #ifndef OPENSSL_NO_ERR
634 err_load_strings(0,ERR_str_libraries);
635 err_load_strings(0,ERR_str_reasons);
636 err_load_strings(ERR_LIB_SYS,ERR_str_functs);
637 build_SYS_str_reasons();
638 err_load_strings(ERR_LIB_SYS,SYS_str_reasons);
639 #endif
640 }
641
err_load_strings(int lib,ERR_STRING_DATA * str)642 static void err_load_strings(int lib, ERR_STRING_DATA *str)
643 {
644 while (str->error)
645 {
646 if (lib)
647 str->error|=ERR_PACK(lib,0,0);
648 ERRFN(err_set_item)(str);
649 str++;
650 }
651 }
652
ERR_load_strings(int lib,ERR_STRING_DATA * str)653 void ERR_load_strings(int lib, ERR_STRING_DATA *str)
654 {
655 ERR_load_ERR_strings();
656 err_load_strings(lib, str);
657 }
658
ERR_unload_strings(int lib,ERR_STRING_DATA * str)659 void ERR_unload_strings(int lib, ERR_STRING_DATA *str)
660 {
661 while (str->error)
662 {
663 if (lib)
664 str->error|=ERR_PACK(lib,0,0);
665 ERRFN(err_del_item)(str);
666 str++;
667 }
668 }
669
ERR_free_strings(void)670 void ERR_free_strings(void)
671 {
672 err_fns_check();
673 ERRFN(err_del)();
674 }
675
676 /********************************************************/
677
ERR_put_error(int lib,int func,int reason,const char * file,int line)678 void ERR_put_error(int lib, int func, int reason, const char *file,
679 int line)
680 {
681 ERR_STATE *es;
682
683 #ifdef _OSD_POSIX
684 /* In the BS2000-OSD POSIX subsystem, the compiler generates
685 * path names in the form "*POSIX(/etc/passwd)".
686 * This dirty hack strips them to something sensible.
687 * @@@ We shouldn't modify a const string, though.
688 */
689 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) {
690 char *end;
691
692 /* Skip the "*POSIX(" prefix */
693 file += sizeof("*POSIX(")-1;
694 end = &file[strlen(file)-1];
695 if (*end == ')')
696 *end = '\0';
697 /* Optional: use the basename of the path only. */
698 if ((end = strrchr(file, '/')) != NULL)
699 file = &end[1];
700 }
701 #endif
702 es=ERR_get_state();
703
704 es->top=(es->top+1)%ERR_NUM_ERRORS;
705 if (es->top == es->bottom)
706 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS;
707 es->err_flags[es->top]=0;
708 es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
709 es->err_file[es->top]=file;
710 es->err_line[es->top]=line;
711 err_clear_data(es,es->top);
712 }
713
ERR_clear_error(void)714 void ERR_clear_error(void)
715 {
716 int i;
717 ERR_STATE *es;
718
719 es=ERR_get_state();
720
721 for (i=0; i<ERR_NUM_ERRORS; i++)
722 {
723 err_clear(es,i);
724 }
725 es->top=es->bottom=0;
726 }
727
728
ERR_get_error(void)729 unsigned long ERR_get_error(void)
730 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); }
731
ERR_get_error_line(const char ** file,int * line)732 unsigned long ERR_get_error_line(const char **file,
733 int *line)
734 { return(get_error_values(1,0,file,line,NULL,NULL)); }
735
ERR_get_error_line_data(const char ** file,int * line,const char ** data,int * flags)736 unsigned long ERR_get_error_line_data(const char **file, int *line,
737 const char **data, int *flags)
738 { return(get_error_values(1,0,file,line,data,flags)); }
739
740
ERR_peek_error(void)741 unsigned long ERR_peek_error(void)
742 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); }
743
ERR_peek_error_line(const char ** file,int * line)744 unsigned long ERR_peek_error_line(const char **file, int *line)
745 { return(get_error_values(0,0,file,line,NULL,NULL)); }
746
ERR_peek_error_line_data(const char ** file,int * line,const char ** data,int * flags)747 unsigned long ERR_peek_error_line_data(const char **file, int *line,
748 const char **data, int *flags)
749 { return(get_error_values(0,0,file,line,data,flags)); }
750
751
ERR_peek_last_error(void)752 unsigned long ERR_peek_last_error(void)
753 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); }
754
ERR_peek_last_error_line(const char ** file,int * line)755 unsigned long ERR_peek_last_error_line(const char **file, int *line)
756 { return(get_error_values(0,1,file,line,NULL,NULL)); }
757
ERR_peek_last_error_line_data(const char ** file,int * line,const char ** data,int * flags)758 unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
759 const char **data, int *flags)
760 { return(get_error_values(0,1,file,line,data,flags)); }
761
762
get_error_values(int inc,int top,const char ** file,int * line,const char ** data,int * flags)763 static unsigned long get_error_values(int inc, int top, const char **file, int *line,
764 const char **data, int *flags)
765 {
766 int i=0;
767 ERR_STATE *es;
768 unsigned long ret;
769
770 es=ERR_get_state();
771
772 if (inc && top)
773 {
774 if (file) *file = "";
775 if (line) *line = 0;
776 if (data) *data = "";
777 if (flags) *flags = 0;
778
779 return ERR_R_INTERNAL_ERROR;
780 }
781
782 if (es->bottom == es->top) return 0;
783 if (top)
784 i=es->top; /* last error */
785 else
786 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */
787
788 ret=es->err_buffer[i];
789 if (inc)
790 {
791 es->bottom=i;
792 es->err_buffer[i]=0;
793 }
794
795 if ((file != NULL) && (line != NULL))
796 {
797 if (es->err_file[i] == NULL)
798 {
799 *file="NA";
800 if (line != NULL) *line=0;
801 }
802 else
803 {
804 *file=es->err_file[i];
805 if (line != NULL) *line=es->err_line[i];
806 }
807 }
808
809 if (data == NULL)
810 {
811 if (inc)
812 {
813 err_clear_data(es, i);
814 }
815 }
816 else
817 {
818 if (es->err_data[i] == NULL)
819 {
820 *data="";
821 if (flags != NULL) *flags=0;
822 }
823 else
824 {
825 *data=es->err_data[i];
826 if (flags != NULL) *flags=es->err_data_flags[i];
827 }
828 }
829 return ret;
830 }
831
ERR_error_string_n(unsigned long e,char * buf,size_t len)832 void ERR_error_string_n(unsigned long e, char *buf, size_t len)
833 {
834 char lsbuf[64], fsbuf[64], rsbuf[64];
835 const char *ls,*fs,*rs;
836 unsigned long l,f,r;
837
838 l=ERR_GET_LIB(e);
839 f=ERR_GET_FUNC(e);
840 r=ERR_GET_REASON(e);
841
842 ls=ERR_lib_error_string(e);
843 fs=ERR_func_error_string(e);
844 rs=ERR_reason_error_string(e);
845
846 if (ls == NULL)
847 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
848 if (fs == NULL)
849 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
850 if (rs == NULL)
851 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
852
853 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf,
854 fs?fs:fsbuf, rs?rs:rsbuf);
855 if (strlen(buf) == len-1)
856 {
857 /* output may be truncated; make sure we always have 5
858 * colon-separated fields, i.e. 4 colons ... */
859 #define NUM_COLONS 4
860 if (len > NUM_COLONS) /* ... if possible */
861 {
862 int i;
863 char *s = buf;
864
865 for (i = 0; i < NUM_COLONS; i++)
866 {
867 char *colon = strchr(s, ':');
868 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i)
869 {
870 /* set colon no. i at last possible position
871 * (buf[len-1] is the terminating 0)*/
872 colon = &buf[len-1] - NUM_COLONS + i;
873 *colon = ':';
874 }
875 s = colon + 1;
876 }
877 }
878 }
879 }
880
881 /* BAD for multi-threading: uses a local buffer if ret == NULL */
882 /* ERR_error_string_n should be used instead for ret != NULL
883 * as ERR_error_string cannot know how large the buffer is */
ERR_error_string(unsigned long e,char * ret)884 char *ERR_error_string(unsigned long e, char *ret)
885 {
886 static char buf[256];
887
888 if (ret == NULL) ret=buf;
889 ERR_error_string_n(e, ret, 256);
890
891 return ret;
892 }
893
ERR_get_string_table(void)894 LHASH *ERR_get_string_table(void)
895 {
896 err_fns_check();
897 return ERRFN(err_get)(0);
898 }
899
ERR_get_err_state_table(void)900 LHASH *ERR_get_err_state_table(void)
901 {
902 err_fns_check();
903 return ERRFN(thread_get)(0);
904 }
905
ERR_release_err_state_table(LHASH ** hash)906 void ERR_release_err_state_table(LHASH **hash)
907 {
908 err_fns_check();
909 ERRFN(thread_release)(hash);
910 }
911
ERR_lib_error_string(unsigned long e)912 const char *ERR_lib_error_string(unsigned long e)
913 {
914 ERR_STRING_DATA d,*p;
915 unsigned long l;
916
917 err_fns_check();
918 l=ERR_GET_LIB(e);
919 d.error=ERR_PACK(l,0,0);
920 p=ERRFN(err_get_item)(&d);
921 return((p == NULL)?NULL:p->string);
922 }
923
ERR_func_error_string(unsigned long e)924 const char *ERR_func_error_string(unsigned long e)
925 {
926 ERR_STRING_DATA d,*p;
927 unsigned long l,f;
928
929 err_fns_check();
930 l=ERR_GET_LIB(e);
931 f=ERR_GET_FUNC(e);
932 d.error=ERR_PACK(l,f,0);
933 p=ERRFN(err_get_item)(&d);
934 return((p == NULL)?NULL:p->string);
935 }
936
ERR_reason_error_string(unsigned long e)937 const char *ERR_reason_error_string(unsigned long e)
938 {
939 ERR_STRING_DATA d,*p=NULL;
940 unsigned long l,r;
941
942 err_fns_check();
943 l=ERR_GET_LIB(e);
944 r=ERR_GET_REASON(e);
945 d.error=ERR_PACK(l,0,r);
946 p=ERRFN(err_get_item)(&d);
947 if (!p)
948 {
949 d.error=ERR_PACK(0,0,r);
950 p=ERRFN(err_get_item)(&d);
951 }
952 return((p == NULL)?NULL:p->string);
953 }
954
955 /* static unsigned long err_hash(ERR_STRING_DATA *a) */
err_hash(const void * a_void)956 static unsigned long err_hash(const void *a_void)
957 {
958 unsigned long ret,l;
959
960 l=((const ERR_STRING_DATA *)a_void)->error;
961 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l);
962 return(ret^ret%19*13);
963 }
964
965 /* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */
err_cmp(const void * a_void,const void * b_void)966 static int err_cmp(const void *a_void, const void *b_void)
967 {
968 return((int)(((const ERR_STRING_DATA *)a_void)->error -
969 ((const ERR_STRING_DATA *)b_void)->error));
970 }
971
972 /* static unsigned long pid_hash(ERR_STATE *a) */
pid_hash(const void * a_void)973 static unsigned long pid_hash(const void *a_void)
974 {
975 return(((const ERR_STATE *)a_void)->pid*13);
976 }
977
978 /* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */
pid_cmp(const void * a_void,const void * b_void)979 static int pid_cmp(const void *a_void, const void *b_void)
980 {
981 return((int)((long)((const ERR_STATE *)a_void)->pid -
982 (long)((const ERR_STATE *)b_void)->pid));
983 }
984
ERR_remove_state(unsigned long pid)985 void ERR_remove_state(unsigned long pid)
986 {
987 ERR_STATE tmp;
988
989 err_fns_check();
990 if (pid == 0)
991 pid=(unsigned long)CRYPTO_thread_id();
992 tmp.pid=pid;
993 /* thread_del_item automatically destroys the LHASH if the number of
994 * items reaches zero. */
995 ERRFN(thread_del_item)(&tmp);
996 }
997
ERR_get_state(void)998 ERR_STATE *ERR_get_state(void)
999 {
1000 static ERR_STATE fallback;
1001 ERR_STATE *ret,tmp,*tmpp=NULL;
1002 int i;
1003 unsigned long pid;
1004
1005 err_fns_check();
1006 pid=(unsigned long)CRYPTO_thread_id();
1007 tmp.pid=pid;
1008 ret=ERRFN(thread_get_item)(&tmp);
1009
1010 /* ret == the error state, if NULL, make a new one */
1011 if (ret == NULL)
1012 {
1013 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE));
1014 if (ret == NULL) return(&fallback);
1015 ret->pid=pid;
1016 ret->top=0;
1017 ret->bottom=0;
1018 for (i=0; i<ERR_NUM_ERRORS; i++)
1019 {
1020 ret->err_data[i]=NULL;
1021 ret->err_data_flags[i]=0;
1022 }
1023 tmpp = ERRFN(thread_set_item)(ret);
1024 /* To check if insertion failed, do a get. */
1025 if (ERRFN(thread_get_item)(ret) != ret)
1026 {
1027 ERR_STATE_free(ret); /* could not insert it */
1028 return(&fallback);
1029 }
1030 /* If a race occured in this function and we came second, tmpp
1031 * is the first one that we just replaced. */
1032 if (tmpp)
1033 ERR_STATE_free(tmpp);
1034 }
1035 return ret;
1036 }
1037
ERR_get_next_error_library(void)1038 int ERR_get_next_error_library(void)
1039 {
1040 err_fns_check();
1041 return ERRFN(get_next_lib)();
1042 }
1043
ERR_set_error_data(char * data,int flags)1044 void ERR_set_error_data(char *data, int flags)
1045 {
1046 ERR_STATE *es;
1047 int i;
1048
1049 es=ERR_get_state();
1050
1051 i=es->top;
1052 if (i == 0)
1053 i=ERR_NUM_ERRORS-1;
1054
1055 err_clear_data(es,i);
1056 es->err_data[i]=data;
1057 es->err_data_flags[i]=flags;
1058 }
1059
ERR_add_error_data(int num,...)1060 void ERR_add_error_data(int num, ...)
1061 {
1062 va_list args;
1063 int i,n,s;
1064 char *str,*p,*a;
1065
1066 s=80;
1067 str=OPENSSL_malloc(s+1);
1068 if (str == NULL) return;
1069 str[0]='\0';
1070
1071 va_start(args, num);
1072 n=0;
1073 for (i=0; i<num; i++)
1074 {
1075 a=va_arg(args, char*);
1076 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */
1077 if (a != NULL)
1078 {
1079 n+=strlen(a);
1080 if (n > s)
1081 {
1082 s=n+20;
1083 p=OPENSSL_realloc(str,s+1);
1084 if (p == NULL)
1085 {
1086 OPENSSL_free(str);
1087 goto err;
1088 }
1089 else
1090 str=p;
1091 }
1092 BUF_strlcat(str,a,(size_t)s+1);
1093 }
1094 }
1095 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING);
1096
1097 err:
1098 va_end(args);
1099 }
1100
ERR_set_mark(void)1101 int ERR_set_mark(void)
1102 {
1103 ERR_STATE *es;
1104
1105 es=ERR_get_state();
1106
1107 if (es->bottom == es->top) return 0;
1108 es->err_flags[es->top]|=ERR_FLAG_MARK;
1109 return 1;
1110 }
1111
ERR_pop_to_mark(void)1112 int ERR_pop_to_mark(void)
1113 {
1114 ERR_STATE *es;
1115
1116 es=ERR_get_state();
1117
1118 while(es->bottom != es->top
1119 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0)
1120 {
1121 err_clear(es,es->top);
1122 es->top-=1;
1123 if (es->top == -1) es->top=ERR_NUM_ERRORS-1;
1124 }
1125
1126 if (es->bottom == es->top) return 0;
1127 es->err_flags[es->top]&=~ERR_FLAG_MARK;
1128 return 1;
1129 }
1130