err.c revision 1.31
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) 1998-2006 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 122DECLARE_LHASH_OF(ERR_STRING_DATA); 123DECLARE_LHASH_OF(ERR_STATE); 124 125static void err_load_strings(int lib, ERR_STRING_DATA *str); 126 127static void ERR_STATE_free(ERR_STATE *s); 128#ifndef OPENSSL_NO_ERR 129static ERR_STRING_DATA ERR_str_libraries[] = { 130 {ERR_PACK(ERR_LIB_NONE,0,0) , "unknown library"}, 131 {ERR_PACK(ERR_LIB_SYS,0,0) , "system library"}, 132 {ERR_PACK(ERR_LIB_BN,0,0) , "bignum routines"}, 133 {ERR_PACK(ERR_LIB_RSA,0,0) , "rsa routines"}, 134 {ERR_PACK(ERR_LIB_DH,0,0) , "Diffie-Hellman routines"}, 135 {ERR_PACK(ERR_LIB_EVP,0,0) , "digital envelope routines"}, 136 {ERR_PACK(ERR_LIB_BUF,0,0) , "memory buffer routines"}, 137 {ERR_PACK(ERR_LIB_OBJ,0,0) , "object identifier routines"}, 138 {ERR_PACK(ERR_LIB_PEM,0,0) , "PEM routines"}, 139 {ERR_PACK(ERR_LIB_DSA,0,0) , "dsa routines"}, 140 {ERR_PACK(ERR_LIB_X509,0,0) , "x509 certificate routines"}, 141 {ERR_PACK(ERR_LIB_ASN1,0,0) , "asn1 encoding routines"}, 142 {ERR_PACK(ERR_LIB_CONF,0,0) , "configuration file routines"}, 143 {ERR_PACK(ERR_LIB_CRYPTO,0,0) , "common libcrypto routines"}, 144 {ERR_PACK(ERR_LIB_EC,0,0) , "elliptic curve routines"}, 145 {ERR_PACK(ERR_LIB_SSL,0,0) , "SSL routines"}, 146 {ERR_PACK(ERR_LIB_BIO,0,0) , "BIO routines"}, 147 {ERR_PACK(ERR_LIB_PKCS7,0,0) , "PKCS7 routines"}, 148 {ERR_PACK(ERR_LIB_X509V3,0,0) , "X509 V3 routines"}, 149 {ERR_PACK(ERR_LIB_PKCS12,0,0) , "PKCS12 routines"}, 150 {ERR_PACK(ERR_LIB_RAND,0,0) , "random number generator"}, 151 {ERR_PACK(ERR_LIB_DSO,0,0) , "DSO support routines"}, 152 {ERR_PACK(ERR_LIB_TS,0,0) , "time stamp routines"}, 153 {ERR_PACK(ERR_LIB_ENGINE,0,0) , "engine routines"}, 154 {ERR_PACK(ERR_LIB_OCSP,0,0) , "OCSP routines"}, 155 {ERR_PACK(ERR_LIB_FIPS,0,0) , "FIPS routines"}, 156 {ERR_PACK(ERR_LIB_CMS,0,0) , "CMS routines"}, 157 {ERR_PACK(ERR_LIB_HMAC,0,0) , "HMAC routines"}, 158 {0, NULL}, 159}; 160 161static ERR_STRING_DATA ERR_str_functs[] = { 162 {ERR_PACK(0,SYS_F_FOPEN, 0), "fopen"}, 163 {ERR_PACK(0,SYS_F_CONNECT, 0), "connect"}, 164 {ERR_PACK(0,SYS_F_GETSERVBYNAME, 0), "getservbyname"}, 165 {ERR_PACK(0,SYS_F_SOCKET, 0), "socket"}, 166 {ERR_PACK(0,SYS_F_IOCTLSOCKET, 0), "ioctl"}, 167 {ERR_PACK(0,SYS_F_BIND, 0), "bind"}, 168 {ERR_PACK(0,SYS_F_LISTEN, 0), "listen"}, 169 {ERR_PACK(0,SYS_F_ACCEPT, 0), "accept"}, 170 {ERR_PACK(0,SYS_F_OPENDIR, 0), "opendir"}, 171 {ERR_PACK(0,SYS_F_FREAD, 0), "fread"}, 172 {0, NULL}, 173}; 174 175static ERR_STRING_DATA ERR_str_reasons[] = { 176 {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 {ERR_R_TS_LIB , "TS lib"}, 200 201 {ERR_R_NESTED_ASN1_ERROR , "nested asn1 error"}, 202 {ERR_R_BAD_ASN1_OBJECT_HEADER , "bad asn1 object header"}, 203 {ERR_R_BAD_GET_ASN1_OBJECT_CALL , "bad get asn1 object call"}, 204 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE , "expecting an asn1 sequence"}, 205 {ERR_R_ASN1_LENGTH_MISMATCH , "asn1 length mismatch"}, 206 {ERR_R_MISSING_ASN1_EOS , "missing asn1 eos"}, 207 208 {ERR_R_FATAL , "fatal"}, 209 {ERR_R_MALLOC_FAILURE , "malloc failure"}, 210 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED , "called a function you should not call"}, 211 {ERR_R_PASSED_NULL_PARAMETER , "passed a null parameter"}, 212 {ERR_R_INTERNAL_ERROR , "internal error"}, 213 {ERR_R_DISABLED , "called a function that was disabled at compile-time"}, 214 215 {0, NULL}, 216}; 217#endif 218 219 220/* Define the predeclared (but externally opaque) "ERR_FNS" type */ 221struct st_ERR_FNS { 222 /* Works on the "error_hash" string table */ 223 LHASH_OF(ERR_STRING_DATA) *(*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_OF(ERR_STATE) *(*cb_thread_get)(int create); 230 void (*cb_thread_release)(LHASH_OF(ERR_STATE) **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_OF(ERR_STRING_DATA) *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_OF(ERR_STATE) *int_thread_get(int create); 245static void int_thread_release(LHASH_OF(ERR_STATE) **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); 250 251/* The static ERR_FNS table using these defaults functions */ 252static const ERR_FNS err_defaults = { 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_OF(ERR_STRING_DATA) *int_error_hash = NULL; 278static LHASH_OF(ERR_STATE) *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 285err_fns_check(void) 286{ 287 if (err_fns) 288 return; 289 290 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 291 if (!err_fns) 292 err_fns = &err_defaults; 293 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 294} 295 296/* API functions to get or set the underlying ERR functions. */ 297 298const ERR_FNS * 299ERR_get_implementation(void) 300{ 301 err_fns_check(); 302 return err_fns; 303} 304 305int 306ERR_set_implementation(const ERR_FNS *fns) 307{ 308 int ret = 0; 309 310 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 311 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 312 * an error is there?! */ 313 if (!err_fns) { 314 err_fns = fns; 315 ret = 1; 316 } 317 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 318 return ret; 319} 320 321/* These are the callbacks provided to "lh_new()" when creating the LHASH tables 322 * internal to the "err_defaults" implementation. */ 323 324static unsigned long get_error_values(int inc, int top, const char **file, 325 int *line, const char **data, int *flags); 326 327/* The internal functions used in the "err_defaults" implementation */ 328 329static unsigned long 330err_string_data_hash(const ERR_STRING_DATA *a) 331{ 332 unsigned long ret, l; 333 334 l = a->error; 335 ret = l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 336 return (ret^ret % 19*13); 337} 338static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA) 339 340static int 341err_string_data_cmp(const ERR_STRING_DATA *a, const ERR_STRING_DATA *b) 342{ 343 return (int)(a->error - b->error); 344} 345static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA) 346 347static 348LHASH_OF(ERR_STRING_DATA) *int_err_get(int create) 349{ 350 LHASH_OF(ERR_STRING_DATA) *ret = NULL; 351 352 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 353 if (!int_error_hash && create) { 354 CRYPTO_push_info("int_err_get (err.c)"); 355 int_error_hash = lh_ERR_STRING_DATA_new(); 356 CRYPTO_pop_info(); 357 } 358 if (int_error_hash) 359 ret = int_error_hash; 360 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 361 362 return ret; 363} 364 365static void 366int_err_del(void) 367{ 368 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 369 if (int_error_hash) { 370 lh_ERR_STRING_DATA_free(int_error_hash); 371 int_error_hash = NULL; 372 } 373 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 374} 375 376static ERR_STRING_DATA * 377int_err_get_item(const ERR_STRING_DATA *d) 378{ 379 ERR_STRING_DATA *p; 380 LHASH_OF(ERR_STRING_DATA) *hash; 381 382 err_fns_check(); 383 hash = ERRFN(err_get)(0); 384 if (!hash) 385 return NULL; 386 387 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 388 p = lh_ERR_STRING_DATA_retrieve(hash, d); 389 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 390 391 return p; 392} 393 394static ERR_STRING_DATA * 395int_err_set_item(ERR_STRING_DATA *d) 396{ 397 ERR_STRING_DATA *p; 398 LHASH_OF(ERR_STRING_DATA) *hash; 399 400 err_fns_check(); 401 hash = ERRFN(err_get)(1); 402 if (!hash) 403 return NULL; 404 405 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 406 p = lh_ERR_STRING_DATA_insert(hash, d); 407 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 408 409 return p; 410} 411 412static ERR_STRING_DATA * 413int_err_del_item(ERR_STRING_DATA *d) 414{ 415 ERR_STRING_DATA *p; 416 LHASH_OF(ERR_STRING_DATA) *hash; 417 418 err_fns_check(); 419 hash = ERRFN(err_get)(0); 420 if (!hash) 421 return NULL; 422 423 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 424 p = lh_ERR_STRING_DATA_delete(hash, d); 425 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 426 427 return p; 428} 429 430static unsigned long 431err_state_hash(const ERR_STATE *a) 432{ 433 return CRYPTO_THREADID_hash(&a->tid) * 13; 434} 435static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) 436 437static int 438err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) 439{ 440 return CRYPTO_THREADID_cmp(&a->tid, &b->tid); 441} 442static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) 443 444static 445LHASH_OF(ERR_STATE) *int_thread_get(int create) 446{ 447 LHASH_OF(ERR_STATE) *ret = NULL; 448 449 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 450 if (!int_thread_hash && create) { 451 CRYPTO_push_info("int_thread_get (err.c)"); 452 int_thread_hash = lh_ERR_STATE_new(); 453 CRYPTO_pop_info(); 454 } 455 if (int_thread_hash) { 456 int_thread_hash_references++; 457 ret = int_thread_hash; 458 } 459 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 460 return ret; 461} 462 463static void 464int_thread_release(LHASH_OF(ERR_STATE) **hash) 465{ 466 int i; 467 468 if (hash == NULL || *hash == NULL) 469 return; 470 471 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 472 if (i > 0) 473 return; 474 475 *hash = NULL; 476} 477 478static ERR_STATE * 479int_thread_get_item(const ERR_STATE *d) 480{ 481 ERR_STATE *p; 482 LHASH_OF(ERR_STATE) *hash; 483 484 err_fns_check(); 485 hash = ERRFN(thread_get)(0); 486 if (!hash) 487 return NULL; 488 489 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 490 p = lh_ERR_STATE_retrieve(hash, d); 491 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 492 493 ERRFN(thread_release)(&hash); 494 return p; 495} 496 497static ERR_STATE * 498int_thread_set_item(ERR_STATE *d) 499{ 500 ERR_STATE *p; 501 LHASH_OF(ERR_STATE) *hash; 502 503 err_fns_check(); 504 hash = ERRFN(thread_get)(1); 505 if (!hash) 506 return NULL; 507 508 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 509 p = lh_ERR_STATE_insert(hash, d); 510 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 511 512 ERRFN(thread_release)(&hash); 513 return p; 514} 515 516static void 517int_thread_del_item(const ERR_STATE *d) 518{ 519 ERR_STATE *p; 520 LHASH_OF(ERR_STATE) *hash; 521 522 err_fns_check(); 523 hash = ERRFN(thread_get)(0); 524 if (!hash) 525 return; 526 527 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 528 p = lh_ERR_STATE_delete(hash, d); 529 /* make sure we don't leak memory */ 530 if (int_thread_hash_references == 1 && 531 int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) { 532 lh_ERR_STATE_free(int_thread_hash); 533 int_thread_hash = NULL; 534 } 535 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 536 537 ERRFN(thread_release)(&hash); 538 if (p) 539 ERR_STATE_free(p); 540} 541 542static int 543int_err_get_next_lib(void) 544{ 545 int ret; 546 547 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 548 ret = int_err_library_number++; 549 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 550 551 return ret; 552} 553 554 555#ifndef OPENSSL_NO_ERR 556#define NUM_SYS_STR_REASONS 127 557#define LEN_SYS_STR_REASON 32 558 559static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 560/* SYS_str_reasons is filled with copies of strerror() results at 561 * initialization. 562 * 'errno' values up to 127 should cover all usual errors, 563 * others will be displayed numerically by ERR_error_string. 564 * It is crucial that we have something for each reason code 565 * that occurs in ERR_str_reasons, or bogus reason strings 566 * will be returned for SYSerr(), which always gets an errno 567 * value and never one of those 'standard' reason codes. */ 568 569static void 570build_SYS_str_reasons(void) 571{ 572 /* malloc cannot be used here, use static storage instead */ 573 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 574 int i; 575 static int init = 1; 576 577 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 578 if (!init) { 579 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 580 return; 581 } 582 583 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 584 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 585 if (!init) { 586 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 587 return; 588 } 589 590 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { 591 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 592 593 str->error = (unsigned long)i; 594 if (str->string == NULL) { 595 char (*dest)[LEN_SYS_STR_REASON] = 596 &(strerror_tab[i - 1]); 597 char *src = strerror(i); 598 if (src != NULL) { 599 strlcpy(*dest, src, sizeof *dest); 600 str->string = *dest; 601 } 602 } 603 if (str->string == NULL) 604 str->string = "unknown"; 605 } 606 607 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 608 * as required by ERR_load_strings. */ 609 610 init = 0; 611 612 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 613} 614#endif 615 616#define err_clear_data(p,i) \ 617 do { \ 618 if (((p)->err_data[i] != NULL) && \ 619 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 620 { \ 621 free((p)->err_data[i]); \ 622 (p)->err_data[i]=NULL; \ 623 } \ 624 (p)->err_data_flags[i]=0; \ 625 } while(0) 626 627#define err_clear(p,i) \ 628 do { \ 629 (p)->err_flags[i]=0; \ 630 (p)->err_buffer[i]=0; \ 631 err_clear_data(p,i); \ 632 (p)->err_file[i]=NULL; \ 633 (p)->err_line[i]= -1; \ 634 } while(0) 635 636static void 637ERR_STATE_free(ERR_STATE *s) 638{ 639 int i; 640 641 if (s == NULL) 642 return; 643 644 for (i = 0; i < ERR_NUM_ERRORS; i++) { 645 err_clear_data(s, i); 646 } 647 free(s); 648} 649 650void 651ERR_load_ERR_strings(void) 652{ 653 err_fns_check(); 654#ifndef OPENSSL_NO_ERR 655 err_load_strings(0, ERR_str_libraries); 656 err_load_strings(0, ERR_str_reasons); 657 err_load_strings(ERR_LIB_SYS, ERR_str_functs); 658 build_SYS_str_reasons(); 659 err_load_strings(ERR_LIB_SYS, SYS_str_reasons); 660#endif 661} 662 663static void 664err_load_strings(int lib, ERR_STRING_DATA *str) 665{ 666 while (str->error) { 667 if (lib) 668 str->error |= ERR_PACK(lib, 0, 0); 669 ERRFN(err_set_item)(str); 670 str++; 671 } 672} 673 674void 675ERR_load_strings(int lib, ERR_STRING_DATA *str) 676{ 677 ERR_load_ERR_strings(); 678 err_load_strings(lib, str); 679} 680 681void 682ERR_unload_strings(int lib, ERR_STRING_DATA *str) 683{ 684 while (str->error) { 685 if (lib) 686 str->error |= ERR_PACK(lib, 0, 0); 687 ERRFN(err_del_item)(str); 688 str++; 689 } 690} 691 692void 693ERR_free_strings(void) 694{ 695 err_fns_check(); 696 ERRFN(err_del)(); 697} 698 699/********************************************************/ 700 701void 702ERR_put_error(int lib, int func, int reason, const char *file, int line) 703{ 704 ERR_STATE *es; 705 706 es = ERR_get_state(); 707 708 es->top = (es->top + 1) % ERR_NUM_ERRORS; 709 if (es->top == es->bottom) 710 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; 711 es->err_flags[es->top] = 0; 712 es->err_buffer[es->top] = ERR_PACK(lib, func, reason); 713 es->err_file[es->top] = file; 714 es->err_line[es->top] = line; 715 err_clear_data(es, es->top); 716} 717 718void 719ERR_clear_error(void) 720{ 721 int i; 722 ERR_STATE *es; 723 724 es = ERR_get_state(); 725 726 for (i = 0; i < ERR_NUM_ERRORS; i++) { 727 err_clear(es, i); 728 } 729 es->top = es->bottom = 0; 730} 731 732 733unsigned long ERR_get_error(void) 734{ 735 return (get_error_values(1, 0,NULL, NULL, NULL, NULL)); 736} 737 738unsigned long ERR_get_error_line(const char **file, int *line) 739{ 740 return (get_error_values(1, 0,file, line, NULL, NULL)); 741} 742 743unsigned long ERR_get_error_line_data(const char **file, int *line, 744 const char **data, int *flags) 745{ 746 return (get_error_values(1, 0,file, line, data, flags)); 747} 748 749 750unsigned long ERR_peek_error(void) 751{ 752 return (get_error_values(0, 0,NULL, NULL, NULL, NULL)); 753} 754 755unsigned long ERR_peek_error_line(const char **file, int *line) 756{ 757 return (get_error_values(0, 0,file, line, NULL, NULL)); 758} 759 760unsigned long ERR_peek_error_line_data(const char **file, int *line, 761 const char **data, int *flags) 762{ 763 return (get_error_values(0, 0,file, line, data, flags)); 764} 765 766unsigned long ERR_peek_last_error(void) 767{ 768 return (get_error_values(0, 1,NULL, NULL, NULL, NULL)); 769} 770 771unsigned long ERR_peek_last_error_line(const char **file, int *line) 772{ 773 return (get_error_values(0, 1,file, line, NULL, NULL)); 774} 775 776unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 777 const char **data, int *flags) 778{ 779 return (get_error_values(0, 1,file, line, data, flags)); 780} 781 782static unsigned 783long get_error_values(int inc, int top, const char **file, int *line, 784 const char **data, int *flags) 785{ 786 int i = 0; 787 ERR_STATE *es; 788 unsigned long ret; 789 790 es = ERR_get_state(); 791 792 if (inc && top) { 793 if (file) 794 *file = ""; 795 if (line) 796 *line = 0; 797 if (data) 798 *data = ""; 799 if (flags) 800 *flags = 0; 801 802 return ERR_R_INTERNAL_ERROR; 803 } 804 805 if (es->bottom == es->top) 806 return 0; 807 if (top) 808 i = es->top; /* last error */ 809 else 810 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */ 811 812 ret = es->err_buffer[i]; 813 if (inc) { 814 es->bottom = i; 815 es->err_buffer[i] = 0; 816 } 817 818 if ((file != NULL) && (line != NULL)) { 819 if (es->err_file[i] == NULL) { 820 *file = "NA"; 821 if (line != NULL) 822 *line = 0; 823 } else { 824 *file = es->err_file[i]; 825 if (line != NULL) 826 *line = es->err_line[i]; 827 } 828 } 829 830 if (data == NULL) { 831 if (inc) { 832 err_clear_data(es, i); 833 } 834 } else { 835 if (es->err_data[i] == NULL) { 836 *data = ""; 837 if (flags != NULL) 838 *flags = 0; 839 } else { 840 *data = es->err_data[i]; 841 if (flags != NULL) 842 *flags = es->err_data_flags[i]; 843 } 844 } 845 return ret; 846} 847 848void 849ERR_error_string_n(unsigned long e, char *buf, size_t len) 850{ 851 char lsbuf[30], fsbuf[30], rsbuf[30]; 852 const char *ls, *fs, *rs; 853 int l, f, r, ret; 854 855 l = ERR_GET_LIB(e); 856 f = ERR_GET_FUNC(e); 857 r = ERR_GET_REASON(e); 858 859 ls = ERR_lib_error_string(e); 860 fs = ERR_func_error_string(e); 861 rs = ERR_reason_error_string(e); 862 863 if (ls == NULL) { 864 (void) snprintf(lsbuf, sizeof(lsbuf), "lib(%d)", l); 865 ls = lsbuf; 866 } 867 if (fs == NULL) { 868 (void) snprintf(fsbuf, sizeof(fsbuf), "func(%d)", f); 869 fs = fsbuf; 870 } 871 if (rs == NULL) { 872 (void) snprintf(rsbuf, sizeof(rsbuf), "reason(%d)", r); 873 rs = rsbuf; 874 } 875 876 ret = snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs); 877 if (ret == -1) 878 return; /* can't happen, and can't do better if it does */ 879 if (ret >= len) { 880 /* output may be truncated; make sure we always have 5 881 * colon-separated fields, i.e. 4 colons ... */ 882#define NUM_COLONS 4 883 if (len > NUM_COLONS) /* ... if possible */ 884 { 885 int i; 886 char *s = buf; 887 888 for (i = 0; i < NUM_COLONS; i++) { 889 char *colon = strchr(s, ':'); 890 if (colon == NULL || 891 colon > &buf[len - 1] - NUM_COLONS + i) { 892 /* set colon no. i at last possible position 893 * (buf[len-1] is the terminating 0)*/ 894 colon = &buf[len - 1] - NUM_COLONS + i; 895 *colon = ':'; 896 } 897 s = colon + 1; 898 } 899 } 900 } 901} 902 903/* BAD for multi-threading: uses a local buffer if ret == NULL */ 904/* ERR_error_string_n should be used instead for ret != NULL 905 * as ERR_error_string cannot know how large the buffer is */ 906char * 907ERR_error_string(unsigned long e, char *ret) 908{ 909 static char buf[256]; 910 911 if (ret == NULL) 912 ret = buf; 913 ERR_error_string_n(e, ret, 256); 914 915 return ret; 916} 917 918LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void) 919{ 920 err_fns_check(); 921 return ERRFN(err_get)(0); 922} 923 924LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void) 925{ 926 err_fns_check(); 927 return ERRFN(thread_get)(0); 928} 929 930void 931ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash) 932{ 933 err_fns_check(); 934 ERRFN(thread_release)(hash); 935} 936 937const char * 938ERR_lib_error_string(unsigned long e) 939{ 940 ERR_STRING_DATA d, *p; 941 unsigned long l; 942 943 err_fns_check(); 944 l = ERR_GET_LIB(e); 945 d.error = ERR_PACK(l, 0, 0); 946 p = ERRFN(err_get_item)(&d); 947 return ((p == NULL) ? NULL : p->string); 948} 949 950const char * 951ERR_func_error_string(unsigned long e) 952{ 953 ERR_STRING_DATA d, *p; 954 unsigned long l, f; 955 956 err_fns_check(); 957 l = ERR_GET_LIB(e); 958 f = ERR_GET_FUNC(e); 959 d.error = ERR_PACK(l, f, 0); 960 p = ERRFN(err_get_item)(&d); 961 return ((p == NULL) ? NULL : p->string); 962} 963 964const char * 965ERR_reason_error_string(unsigned long e) 966{ 967 ERR_STRING_DATA d, *p = NULL; 968 unsigned long l, r; 969 970 err_fns_check(); 971 l = ERR_GET_LIB(e); 972 r = ERR_GET_REASON(e); 973 d.error = ERR_PACK(l, 0, r); 974 p = ERRFN(err_get_item)(&d); 975 if (!p) { 976 d.error = ERR_PACK(0, 0, r); 977 p = ERRFN(err_get_item)(&d); 978 } 979 return ((p == NULL) ? NULL : p->string); 980} 981 982void 983ERR_remove_thread_state(const CRYPTO_THREADID *id) 984{ 985 ERR_STATE tmp; 986 987 if (id) 988 CRYPTO_THREADID_cpy(&tmp.tid, id); 989 else 990 CRYPTO_THREADID_current(&tmp.tid); 991 err_fns_check(); 992 /* thread_del_item automatically destroys the LHASH if the number of 993 * items reaches zero. */ 994 ERRFN(thread_del_item)(&tmp); 995} 996 997#ifndef OPENSSL_NO_DEPRECATED 998void 999ERR_remove_state(unsigned long pid) 1000{ 1001 ERR_remove_thread_state(NULL); 1002} 1003#endif 1004 1005ERR_STATE * 1006ERR_get_state(void) 1007{ 1008 static ERR_STATE fallback; 1009 ERR_STATE *ret, tmp, *tmpp = NULL; 1010 int i; 1011 CRYPTO_THREADID tid; 1012 1013 err_fns_check(); 1014 CRYPTO_THREADID_current(&tid); 1015 CRYPTO_THREADID_cpy(&tmp.tid, &tid); 1016 ret = ERRFN(thread_get_item)(&tmp); 1017 1018 /* ret == the error state, if NULL, make a new one */ 1019 if (ret == NULL) { 1020 ret = (ERR_STATE *)malloc(sizeof(ERR_STATE)); 1021 if (ret == NULL) 1022 return (&fallback); 1023 CRYPTO_THREADID_cpy(&ret->tid, &tid); 1024 ret->top = 0; 1025 ret->bottom = 0; 1026 for (i = 0; i < ERR_NUM_ERRORS; i++) { 1027 ret->err_data[i] = NULL; 1028 ret->err_data_flags[i] = 0; 1029 } 1030 tmpp = ERRFN(thread_set_item)(ret); 1031 /* To check if insertion failed, do a get. */ 1032 if (ERRFN(thread_get_item)(ret) != ret) { 1033 ERR_STATE_free(ret); /* could not insert it */ 1034 return (&fallback); 1035 } 1036 /* If a race occured in this function and we came second, tmpp 1037 * is the first one that we just replaced. */ 1038 if (tmpp) 1039 ERR_STATE_free(tmpp); 1040 } 1041 return ret; 1042} 1043 1044int 1045ERR_get_next_error_library(void) 1046{ 1047 err_fns_check(); 1048 return ERRFN(get_next_lib)(); 1049} 1050 1051void 1052ERR_set_error_data(char *data, int flags) 1053{ 1054 ERR_STATE *es; 1055 int i; 1056 1057 es = ERR_get_state(); 1058 1059 i = es->top; 1060 if (i == 0) 1061 i = ERR_NUM_ERRORS - 1; 1062 1063 err_clear_data(es, i); 1064 es->err_data[i] = data; 1065 es->err_data_flags[i] = flags; 1066} 1067 1068void 1069ERR_asprintf_error_data(char * format, ...) { 1070 char *errbuf = NULL; 1071 va_list ap; 1072 int r; 1073 1074 va_start(ap, format); 1075 r = vasprintf(&errbuf, format, ap); 1076 va_end(ap); 1077 if (r == -1) 1078 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1079 else 1080 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1081} 1082void 1083ERR_add_error_data(int num, ...) 1084{ 1085 va_list args; 1086 va_start(args, num); 1087 ERR_add_error_vdata(num, args); 1088 va_end(args); 1089} 1090 1091void 1092ERR_add_error_vdata(int num, va_list args) 1093{ 1094 char format[129]; 1095 char *errbuf; 1096 format[0] = '\0'; 1097 int i; 1098 for (i = 0; i < num; i++) { 1099 if (strlcat(format, "%s", sizeof(format)) >= sizeof(format)) { 1100 ERR_set_error_data("too many errors", ERR_TXT_STRING); 1101 return; 1102 } 1103 } 1104 if (vasprintf(&errbuf, format, args) == -1) 1105 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1106 else 1107 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1108} 1109 1110int 1111ERR_set_mark(void) 1112{ 1113 ERR_STATE *es; 1114 1115 es = ERR_get_state(); 1116 1117 if (es->bottom == es->top) 1118 return 0; 1119 es->err_flags[es->top] |= ERR_FLAG_MARK; 1120 return 1; 1121} 1122 1123int 1124ERR_pop_to_mark(void) 1125{ 1126 ERR_STATE *es; 1127 1128 es = ERR_get_state(); 1129 1130 while (es->bottom != es->top && 1131 (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { 1132 err_clear(es, es->top); 1133 es->top -= 1; 1134 if (es->top == -1) 1135 es->top = ERR_NUM_ERRORS - 1; 1136 } 1137 1138 if (es->bottom == es->top) 1139 return 0; 1140 es->err_flags[es->top]&=~ERR_FLAG_MARK; 1141 return 1; 1142} 1143