err.c revision 1.26
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 { 131{ERR_PACK(ERR_LIB_NONE,0,0) ,"unknown library"}, 132{ERR_PACK(ERR_LIB_SYS,0,0) ,"system library"}, 133{ERR_PACK(ERR_LIB_BN,0,0) ,"bignum routines"}, 134{ERR_PACK(ERR_LIB_RSA,0,0) ,"rsa routines"}, 135{ERR_PACK(ERR_LIB_DH,0,0) ,"Diffie-Hellman routines"}, 136{ERR_PACK(ERR_LIB_EVP,0,0) ,"digital envelope routines"}, 137{ERR_PACK(ERR_LIB_BUF,0,0) ,"memory buffer routines"}, 138{ERR_PACK(ERR_LIB_OBJ,0,0) ,"object identifier routines"}, 139{ERR_PACK(ERR_LIB_PEM,0,0) ,"PEM routines"}, 140{ERR_PACK(ERR_LIB_DSA,0,0) ,"dsa routines"}, 141{ERR_PACK(ERR_LIB_X509,0,0) ,"x509 certificate routines"}, 142{ERR_PACK(ERR_LIB_ASN1,0,0) ,"asn1 encoding routines"}, 143{ERR_PACK(ERR_LIB_CONF,0,0) ,"configuration file routines"}, 144{ERR_PACK(ERR_LIB_CRYPTO,0,0) ,"common libcrypto routines"}, 145{ERR_PACK(ERR_LIB_EC,0,0) ,"elliptic curve routines"}, 146{ERR_PACK(ERR_LIB_SSL,0,0) ,"SSL routines"}, 147{ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"}, 148{ERR_PACK(ERR_LIB_PKCS7,0,0) ,"PKCS7 routines"}, 149{ERR_PACK(ERR_LIB_X509V3,0,0) ,"X509 V3 routines"}, 150{ERR_PACK(ERR_LIB_PKCS12,0,0) ,"PKCS12 routines"}, 151{ERR_PACK(ERR_LIB_RAND,0,0) ,"random number generator"}, 152{ERR_PACK(ERR_LIB_DSO,0,0) ,"DSO support routines"}, 153{ERR_PACK(ERR_LIB_TS,0,0) ,"time stamp routines"}, 154{ERR_PACK(ERR_LIB_ENGINE,0,0) ,"engine routines"}, 155{ERR_PACK(ERR_LIB_OCSP,0,0) ,"OCSP routines"}, 156{ERR_PACK(ERR_LIB_FIPS,0,0) ,"FIPS routines"}, 157{ERR_PACK(ERR_LIB_CMS,0,0) ,"CMS routines"}, 158{ERR_PACK(ERR_LIB_HMAC,0,0) ,"HMAC routines"}, 159{0,NULL}, 160 }; 161 162static ERR_STRING_DATA ERR_str_functs[]= 163 { 164 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"}, 165 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"}, 166 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"}, 167 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"}, 168 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctl"}, 169 {ERR_PACK(0,SYS_F_BIND,0), "bind"}, 170 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"}, 171 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"}, 172#ifdef OPENSSL_SYS_WINDOWS 173 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"}, 174#endif 175 {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"}, 176 {ERR_PACK(0,SYS_F_FREAD,0), "fread"}, 177 {0,NULL}, 178 }; 179 180static ERR_STRING_DATA ERR_str_reasons[]= 181 { 182{ERR_R_SYS_LIB ,"system lib"}, 183{ERR_R_BN_LIB ,"BN lib"}, 184{ERR_R_RSA_LIB ,"RSA lib"}, 185{ERR_R_DH_LIB ,"DH lib"}, 186{ERR_R_EVP_LIB ,"EVP lib"}, 187{ERR_R_BUF_LIB ,"BUF lib"}, 188{ERR_R_OBJ_LIB ,"OBJ lib"}, 189{ERR_R_PEM_LIB ,"PEM lib"}, 190{ERR_R_DSA_LIB ,"DSA lib"}, 191{ERR_R_X509_LIB ,"X509 lib"}, 192{ERR_R_ASN1_LIB ,"ASN1 lib"}, 193{ERR_R_CONF_LIB ,"CONF lib"}, 194{ERR_R_CRYPTO_LIB ,"CRYPTO lib"}, 195{ERR_R_EC_LIB ,"EC lib"}, 196{ERR_R_SSL_LIB ,"SSL lib"}, 197{ERR_R_BIO_LIB ,"BIO lib"}, 198{ERR_R_PKCS7_LIB ,"PKCS7 lib"}, 199{ERR_R_X509V3_LIB ,"X509V3 lib"}, 200{ERR_R_PKCS12_LIB ,"PKCS12 lib"}, 201{ERR_R_RAND_LIB ,"RAND lib"}, 202{ERR_R_DSO_LIB ,"DSO lib"}, 203{ERR_R_ENGINE_LIB ,"ENGINE lib"}, 204{ERR_R_OCSP_LIB ,"OCSP lib"}, 205{ERR_R_TS_LIB ,"TS lib"}, 206 207{ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"}, 208{ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"}, 209{ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"}, 210{ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"}, 211{ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"}, 212{ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"}, 213 214{ERR_R_FATAL ,"fatal"}, 215{ERR_R_MALLOC_FAILURE ,"malloc failure"}, 216{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"}, 217{ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"}, 218{ERR_R_INTERNAL_ERROR ,"internal error"}, 219{ERR_R_DISABLED ,"called a function that was disabled at compile-time"}, 220 221{0,NULL}, 222 }; 223#endif 224 225 226/* Define the predeclared (but externally opaque) "ERR_FNS" type */ 227struct st_ERR_FNS 228 { 229 /* Works on the "error_hash" string table */ 230 LHASH_OF(ERR_STRING_DATA) *(*cb_err_get)(int create); 231 void (*cb_err_del)(void); 232 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 233 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 234 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 235 /* Works on the "thread_hash" error-state table */ 236 LHASH_OF(ERR_STATE) *(*cb_thread_get)(int create); 237 void (*cb_thread_release)(LHASH_OF(ERR_STATE) **hash); 238 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 239 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 240 void (*cb_thread_del_item)(const ERR_STATE *); 241 /* Returns the next available error "library" numbers */ 242 int (*cb_get_next_lib)(void); 243 }; 244 245/* Predeclarations of the "err_defaults" functions */ 246static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create); 247static void int_err_del(void); 248static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 249static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 250static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 251static LHASH_OF(ERR_STATE) *int_thread_get(int create); 252static void int_thread_release(LHASH_OF(ERR_STATE) **hash); 253static ERR_STATE *int_thread_get_item(const ERR_STATE *); 254static ERR_STATE *int_thread_set_item(ERR_STATE *); 255static void int_thread_del_item(const ERR_STATE *); 256static int int_err_get_next_lib(void); 257/* The static ERR_FNS table using these defaults functions */ 258static const ERR_FNS err_defaults = 259 { 260 int_err_get, 261 int_err_del, 262 int_err_get_item, 263 int_err_set_item, 264 int_err_del_item, 265 int_thread_get, 266 int_thread_release, 267 int_thread_get_item, 268 int_thread_set_item, 269 int_thread_del_item, 270 int_err_get_next_lib 271 }; 272 273/* The replacable table of ERR_FNS functions we use at run-time */ 274static const ERR_FNS *err_fns = NULL; 275 276/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 277#define ERRFN(a) err_fns->cb_##a 278 279/* The internal state used by "err_defaults" - as such, the setting, reading, 280 * creating, and deleting of this data should only be permitted via the 281 * "err_defaults" functions. This way, a linked module can completely defer all 282 * ERR state operation (together with requisite locking) to the implementations 283 * and state in the loading application. */ 284static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; 285static LHASH_OF(ERR_STATE) *int_thread_hash = NULL; 286static int int_thread_hash_references = 0; 287static int int_err_library_number= ERR_LIB_USER; 288 289/* Internal function that checks whether "err_fns" is set and if not, sets it to 290 * the defaults. */ 291static void err_fns_check(void) 292 { 293 if (err_fns) return; 294 295 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 296 if (!err_fns) 297 err_fns = &err_defaults; 298 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 299 } 300 301/* API functions to get or set the underlying ERR functions. */ 302 303const ERR_FNS *ERR_get_implementation(void) 304 { 305 err_fns_check(); 306 return err_fns; 307 } 308 309int ERR_set_implementation(const ERR_FNS *fns) 310 { 311 int ret = 0; 312 313 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 314 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 315 * an error is there?! */ 316 if (!err_fns) 317 { 318 err_fns = fns; 319 ret = 1; 320 } 321 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 322 return ret; 323 } 324 325/* These are the callbacks provided to "lh_new()" when creating the LHASH tables 326 * internal to the "err_defaults" implementation. */ 327 328static unsigned long get_error_values(int inc,int top,const char **file,int *line, 329 const char **data,int *flags); 330 331/* The internal functions used in the "err_defaults" implementation */ 332 333static unsigned long err_string_data_hash(const ERR_STRING_DATA *a) 334 { 335 unsigned long ret,l; 336 337 l=a->error; 338 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 339 return(ret^ret%19*13); 340 } 341static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA) 342 343static int err_string_data_cmp(const ERR_STRING_DATA *a, 344 const ERR_STRING_DATA *b) 345 { 346 return (int)(a->error - b->error); 347 } 348static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA) 349 350static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create) 351 { 352 LHASH_OF(ERR_STRING_DATA) *ret = NULL; 353 354 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 355 if (!int_error_hash && create) 356 { 357 CRYPTO_push_info("int_err_get (err.c)"); 358 int_error_hash = lh_ERR_STRING_DATA_new(); 359 CRYPTO_pop_info(); 360 } 361 if (int_error_hash) 362 ret = int_error_hash; 363 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 364 365 return ret; 366 } 367 368static void int_err_del(void) 369 { 370 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 371 if (int_error_hash) 372 { 373 lh_ERR_STRING_DATA_free(int_error_hash); 374 int_error_hash = NULL; 375 } 376 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 377 } 378 379static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) 380 { 381 ERR_STRING_DATA *p; 382 LHASH_OF(ERR_STRING_DATA) *hash; 383 384 err_fns_check(); 385 hash = ERRFN(err_get)(0); 386 if (!hash) 387 return NULL; 388 389 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 390 p = lh_ERR_STRING_DATA_retrieve(hash, d); 391 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 392 393 return p; 394 } 395 396static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) 397 { 398 ERR_STRING_DATA *p; 399 LHASH_OF(ERR_STRING_DATA) *hash; 400 401 err_fns_check(); 402 hash = ERRFN(err_get)(1); 403 if (!hash) 404 return NULL; 405 406 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 407 p = lh_ERR_STRING_DATA_insert(hash, d); 408 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 409 410 return p; 411 } 412 413static ERR_STRING_DATA *int_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 err_state_hash(const ERR_STATE *a) 431 { 432 return CRYPTO_THREADID_hash(&a->tid) * 13; 433 } 434static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) 435 436static int err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) 437 { 438 return CRYPTO_THREADID_cmp(&a->tid, &b->tid); 439 } 440static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) 441 442static LHASH_OF(ERR_STATE) *int_thread_get(int create) 443 { 444 LHASH_OF(ERR_STATE) *ret = NULL; 445 446 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 447 if (!int_thread_hash && create) 448 { 449 CRYPTO_push_info("int_thread_get (err.c)"); 450 int_thread_hash = lh_ERR_STATE_new(); 451 CRYPTO_pop_info(); 452 } 453 if (int_thread_hash) 454 { 455 int_thread_hash_references++; 456 ret = int_thread_hash; 457 } 458 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 459 return ret; 460 } 461 462static void int_thread_release(LHASH_OF(ERR_STATE) **hash) 463 { 464 int i; 465 466 if (hash == NULL || *hash == NULL) 467 return; 468 469 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 470 if (i > 0) return; 471 472 *hash = NULL; 473 } 474 475static ERR_STATE *int_thread_get_item(const ERR_STATE *d) 476 { 477 ERR_STATE *p; 478 LHASH_OF(ERR_STATE) *hash; 479 480 err_fns_check(); 481 hash = ERRFN(thread_get)(0); 482 if (!hash) 483 return NULL; 484 485 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 486 p = lh_ERR_STATE_retrieve(hash, d); 487 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 488 489 ERRFN(thread_release)(&hash); 490 return p; 491 } 492 493static ERR_STATE *int_thread_set_item(ERR_STATE *d) 494 { 495 ERR_STATE *p; 496 LHASH_OF(ERR_STATE) *hash; 497 498 err_fns_check(); 499 hash = ERRFN(thread_get)(1); 500 if (!hash) 501 return NULL; 502 503 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 504 p = lh_ERR_STATE_insert(hash, d); 505 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 506 507 ERRFN(thread_release)(&hash); 508 return p; 509 } 510 511static void int_thread_del_item(const ERR_STATE *d) 512 { 513 ERR_STATE *p; 514 LHASH_OF(ERR_STATE) *hash; 515 516 err_fns_check(); 517 hash = ERRFN(thread_get)(0); 518 if (!hash) 519 return; 520 521 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 522 p = lh_ERR_STATE_delete(hash, d); 523 /* make sure we don't leak memory */ 524 if (int_thread_hash_references == 1 525 && int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) 526 { 527 lh_ERR_STATE_free(int_thread_hash); 528 int_thread_hash = NULL; 529 } 530 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 531 532 ERRFN(thread_release)(&hash); 533 if (p) 534 ERR_STATE_free(p); 535 } 536 537static int int_err_get_next_lib(void) 538 { 539 int ret; 540 541 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 542 ret = int_err_library_number++; 543 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 544 545 return ret; 546 } 547 548 549#ifndef OPENSSL_NO_ERR 550#define NUM_SYS_STR_REASONS 127 551#define LEN_SYS_STR_REASON 32 552 553static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 554/* SYS_str_reasons is filled with copies of strerror() results at 555 * initialization. 556 * 'errno' values up to 127 should cover all usual errors, 557 * others will be displayed numerically by ERR_error_string. 558 * It is crucial that we have something for each reason code 559 * that occurs in ERR_str_reasons, or bogus reason strings 560 * will be returned for SYSerr(), which always gets an errno 561 * value and never one of those 'standard' reason codes. */ 562 563static void build_SYS_str_reasons(void) 564 { 565 /* malloc cannot be used here, use static storage instead */ 566 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 567 int i; 568 static int init = 1; 569 570 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 571 if (!init) 572 { 573 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 574 return; 575 } 576 577 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 578 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 579 if (!init) 580 { 581 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 582 return; 583 } 584 585 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) 586 { 587 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 588 589 str->error = (unsigned long)i; 590 if (str->string == NULL) 591 { 592 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 593 char *src = strerror(i); 594 if (src != NULL) 595 { 596 strlcpy(*dest, src, sizeof *dest); 597 str->string = *dest; 598 } 599 } 600 if (str->string == NULL) 601 str->string = "unknown"; 602 } 603 604 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 605 * as required by ERR_load_strings. */ 606 607 init = 0; 608 609 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 610 } 611#endif 612 613#define err_clear_data(p,i) \ 614 do { \ 615 if (((p)->err_data[i] != NULL) && \ 616 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 617 { \ 618 free((p)->err_data[i]); \ 619 (p)->err_data[i]=NULL; \ 620 } \ 621 (p)->err_data_flags[i]=0; \ 622 } while(0) 623 624#define err_clear(p,i) \ 625 do { \ 626 (p)->err_flags[i]=0; \ 627 (p)->err_buffer[i]=0; \ 628 err_clear_data(p,i); \ 629 (p)->err_file[i]=NULL; \ 630 (p)->err_line[i]= -1; \ 631 } while(0) 632 633static void ERR_STATE_free(ERR_STATE *s) 634 { 635 int i; 636 637 if (s == NULL) 638 return; 639 640 for (i=0; i<ERR_NUM_ERRORS; i++) 641 { 642 err_clear_data(s,i); 643 } 644 free(s); 645 } 646 647void ERR_load_ERR_strings(void) 648 { 649 err_fns_check(); 650#ifndef OPENSSL_NO_ERR 651 err_load_strings(0,ERR_str_libraries); 652 err_load_strings(0,ERR_str_reasons); 653 err_load_strings(ERR_LIB_SYS,ERR_str_functs); 654 build_SYS_str_reasons(); 655 err_load_strings(ERR_LIB_SYS,SYS_str_reasons); 656#endif 657 } 658 659static void err_load_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_set_item)(str); 666 str++; 667 } 668 } 669 670void ERR_load_strings(int lib, ERR_STRING_DATA *str) 671 { 672 ERR_load_ERR_strings(); 673 err_load_strings(lib, str); 674 } 675 676void ERR_unload_strings(int lib, ERR_STRING_DATA *str) 677 { 678 while (str->error) 679 { 680 if (lib) 681 str->error|=ERR_PACK(lib,0,0); 682 ERRFN(err_del_item)(str); 683 str++; 684 } 685 } 686 687void ERR_free_strings(void) 688 { 689 err_fns_check(); 690 ERRFN(err_del)(); 691 } 692 693/********************************************************/ 694 695void ERR_put_error(int lib, int func, int reason, const char *file, 696 int line) 697 { 698 ERR_STATE *es; 699 700 es=ERR_get_state(); 701 702 es->top=(es->top+1)%ERR_NUM_ERRORS; 703 if (es->top == es->bottom) 704 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; 705 es->err_flags[es->top]=0; 706 es->err_buffer[es->top]=ERR_PACK(lib,func,reason); 707 es->err_file[es->top]=file; 708 es->err_line[es->top]=line; 709 err_clear_data(es,es->top); 710 } 711 712void ERR_clear_error(void) 713 { 714 int i; 715 ERR_STATE *es; 716 717 es=ERR_get_state(); 718 719 for (i=0; i<ERR_NUM_ERRORS; i++) 720 { 721 err_clear(es,i); 722 } 723 es->top=es->bottom=0; 724 } 725 726 727unsigned long ERR_get_error(void) 728 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); } 729 730unsigned long ERR_get_error_line(const char **file, 731 int *line) 732 { return(get_error_values(1,0,file,line,NULL,NULL)); } 733 734unsigned long ERR_get_error_line_data(const char **file, int *line, 735 const char **data, int *flags) 736 { return(get_error_values(1,0,file,line,data,flags)); } 737 738 739unsigned long ERR_peek_error(void) 740 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); } 741 742unsigned long ERR_peek_error_line(const char **file, int *line) 743 { return(get_error_values(0,0,file,line,NULL,NULL)); } 744 745unsigned long ERR_peek_error_line_data(const char **file, int *line, 746 const char **data, int *flags) 747 { return(get_error_values(0,0,file,line,data,flags)); } 748 749 750unsigned long ERR_peek_last_error(void) 751 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); } 752 753unsigned long ERR_peek_last_error_line(const char **file, int *line) 754 { return(get_error_values(0,1,file,line,NULL,NULL)); } 755 756unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 757 const char **data, int *flags) 758 { return(get_error_values(0,1,file,line,data,flags)); } 759 760 761static unsigned long get_error_values(int inc, int top, const char **file, int *line, 762 const char **data, int *flags) 763 { 764 int i=0; 765 ERR_STATE *es; 766 unsigned long ret; 767 768 es=ERR_get_state(); 769 770 if (inc && top) 771 { 772 if (file) *file = ""; 773 if (line) *line = 0; 774 if (data) *data = ""; 775 if (flags) *flags = 0; 776 777 return ERR_R_INTERNAL_ERROR; 778 } 779 780 if (es->bottom == es->top) return 0; 781 if (top) 782 i=es->top; /* last error */ 783 else 784 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */ 785 786 ret=es->err_buffer[i]; 787 if (inc) 788 { 789 es->bottom=i; 790 es->err_buffer[i]=0; 791 } 792 793 if ((file != NULL) && (line != NULL)) 794 { 795 if (es->err_file[i] == NULL) 796 { 797 *file="NA"; 798 if (line != NULL) *line=0; 799 } 800 else 801 { 802 *file=es->err_file[i]; 803 if (line != NULL) *line=es->err_line[i]; 804 } 805 } 806 807 if (data == NULL) 808 { 809 if (inc) 810 { 811 err_clear_data(es, i); 812 } 813 } 814 else 815 { 816 if (es->err_data[i] == NULL) 817 { 818 *data=""; 819 if (flags != NULL) *flags=0; 820 } 821 else 822 { 823 *data=es->err_data[i]; 824 if (flags != NULL) *flags=es->err_data_flags[i]; 825 } 826 } 827 return ret; 828 } 829 830void ERR_error_string_n(unsigned long e, char *buf, size_t len) 831 { 832 char lsbuf[64], fsbuf[64], rsbuf[64]; 833 const char *ls,*fs,*rs; 834 unsigned long l,f,r; 835 836 l=ERR_GET_LIB(e); 837 f=ERR_GET_FUNC(e); 838 r=ERR_GET_REASON(e); 839 840 ls=ERR_lib_error_string(e); 841 fs=ERR_func_error_string(e); 842 rs=ERR_reason_error_string(e); 843 844 if (ls == NULL) 845 (void) snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); 846 if (fs == NULL) 847 (void) snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); 848 if (rs == NULL) 849 (void) snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); 850 851 (void) snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf, 852 fs?fs:fsbuf, rs?rs:rsbuf); 853 if (strlen(buf) == len-1) 854 { 855 /* output may be truncated; make sure we always have 5 856 * colon-separated fields, i.e. 4 colons ... */ 857#define NUM_COLONS 4 858 if (len > NUM_COLONS) /* ... if possible */ 859 { 860 int i; 861 char *s = buf; 862 863 for (i = 0; i < NUM_COLONS; i++) 864 { 865 char *colon = strchr(s, ':'); 866 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i) 867 { 868 /* set colon no. i at last possible position 869 * (buf[len-1] is the terminating 0)*/ 870 colon = &buf[len-1] - NUM_COLONS + i; 871 *colon = ':'; 872 } 873 s = colon + 1; 874 } 875 } 876 } 877 } 878 879/* BAD for multi-threading: uses a local buffer if ret == NULL */ 880/* ERR_error_string_n should be used instead for ret != NULL 881 * as ERR_error_string cannot know how large the buffer is */ 882char *ERR_error_string(unsigned long e, char *ret) 883 { 884 static char buf[256]; 885 886 if (ret == NULL) ret=buf; 887 ERR_error_string_n(e, ret, 256); 888 889 return ret; 890 } 891 892LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void) 893 { 894 err_fns_check(); 895 return ERRFN(err_get)(0); 896 } 897 898LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void) 899 { 900 err_fns_check(); 901 return ERRFN(thread_get)(0); 902 } 903 904void ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash) 905 { 906 err_fns_check(); 907 ERRFN(thread_release)(hash); 908 } 909 910const char *ERR_lib_error_string(unsigned long e) 911 { 912 ERR_STRING_DATA d,*p; 913 unsigned long l; 914 915 err_fns_check(); 916 l=ERR_GET_LIB(e); 917 d.error=ERR_PACK(l,0,0); 918 p=ERRFN(err_get_item)(&d); 919 return((p == NULL)?NULL:p->string); 920 } 921 922const char *ERR_func_error_string(unsigned long e) 923 { 924 ERR_STRING_DATA d,*p; 925 unsigned long l,f; 926 927 err_fns_check(); 928 l=ERR_GET_LIB(e); 929 f=ERR_GET_FUNC(e); 930 d.error=ERR_PACK(l,f,0); 931 p=ERRFN(err_get_item)(&d); 932 return((p == NULL)?NULL:p->string); 933 } 934 935const char *ERR_reason_error_string(unsigned long e) 936 { 937 ERR_STRING_DATA d,*p=NULL; 938 unsigned long l,r; 939 940 err_fns_check(); 941 l=ERR_GET_LIB(e); 942 r=ERR_GET_REASON(e); 943 d.error=ERR_PACK(l,0,r); 944 p=ERRFN(err_get_item)(&d); 945 if (!p) 946 { 947 d.error=ERR_PACK(0,0,r); 948 p=ERRFN(err_get_item)(&d); 949 } 950 return((p == NULL)?NULL:p->string); 951 } 952 953void ERR_remove_thread_state(const CRYPTO_THREADID *id) 954 { 955 ERR_STATE tmp; 956 957 if (id) 958 CRYPTO_THREADID_cpy(&tmp.tid, id); 959 else 960 CRYPTO_THREADID_current(&tmp.tid); 961 err_fns_check(); 962 /* thread_del_item automatically destroys the LHASH if the number of 963 * items reaches zero. */ 964 ERRFN(thread_del_item)(&tmp); 965 } 966 967#ifndef OPENSSL_NO_DEPRECATED 968void ERR_remove_state(unsigned long pid) 969 { 970 ERR_remove_thread_state(NULL); 971 } 972#endif 973 974ERR_STATE *ERR_get_state(void) 975 { 976 static ERR_STATE fallback; 977 ERR_STATE *ret,tmp,*tmpp=NULL; 978 int i; 979 CRYPTO_THREADID tid; 980 981 err_fns_check(); 982 CRYPTO_THREADID_current(&tid); 983 CRYPTO_THREADID_cpy(&tmp.tid, &tid); 984 ret=ERRFN(thread_get_item)(&tmp); 985 986 /* ret == the error state, if NULL, make a new one */ 987 if (ret == NULL) 988 { 989 ret=(ERR_STATE *)malloc(sizeof(ERR_STATE)); 990 if (ret == NULL) return(&fallback); 991 CRYPTO_THREADID_cpy(&ret->tid, &tid); 992 ret->top=0; 993 ret->bottom=0; 994 for (i=0; i<ERR_NUM_ERRORS; i++) 995 { 996 ret->err_data[i]=NULL; 997 ret->err_data_flags[i]=0; 998 } 999 tmpp = ERRFN(thread_set_item)(ret); 1000 /* To check if insertion failed, do a get. */ 1001 if (ERRFN(thread_get_item)(ret) != ret) 1002 { 1003 ERR_STATE_free(ret); /* could not insert it */ 1004 return(&fallback); 1005 } 1006 /* If a race occured in this function and we came second, tmpp 1007 * is the first one that we just replaced. */ 1008 if (tmpp) 1009 ERR_STATE_free(tmpp); 1010 } 1011 return ret; 1012 } 1013 1014int ERR_get_next_error_library(void) 1015 { 1016 err_fns_check(); 1017 return ERRFN(get_next_lib)(); 1018 } 1019 1020void ERR_set_error_data(char *data, int flags) 1021 { 1022 ERR_STATE *es; 1023 int i; 1024 1025 es=ERR_get_state(); 1026 1027 i=es->top; 1028 if (i == 0) 1029 i=ERR_NUM_ERRORS-1; 1030 1031 err_clear_data(es,i); 1032 es->err_data[i]=data; 1033 es->err_data_flags[i]=flags; 1034 } 1035 1036void ERR_add_error_data(int num, ...) 1037 { 1038 va_list args; 1039 va_start(args, num); 1040 ERR_add_error_vdata(num, args); 1041 va_end(args); 1042 } 1043 1044void ERR_add_error_vdata(int num, va_list args) 1045 { 1046 int i,n,s; 1047 char *str,*p,*a; 1048 1049 s=80; 1050 str=malloc(s+1); 1051 if (str == NULL) return; 1052 str[0]='\0'; 1053 1054 n=0; 1055 for (i=0; i<num; i++) 1056 { 1057 a=va_arg(args, char*); 1058 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 1059 if (a != NULL) 1060 { 1061 n+=strlen(a); 1062 if (n > s) 1063 { 1064 s=n+20; 1065 p=realloc(str,s+1); 1066 if (p == NULL) 1067 { 1068 free(str); 1069 return; 1070 } 1071 else 1072 str=p; 1073 } 1074 strlcat(str,a,(size_t)s+1); 1075 } 1076 } 1077 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); 1078 } 1079 1080int ERR_set_mark(void) 1081 { 1082 ERR_STATE *es; 1083 1084 es=ERR_get_state(); 1085 1086 if (es->bottom == es->top) return 0; 1087 es->err_flags[es->top]|=ERR_FLAG_MARK; 1088 return 1; 1089 } 1090 1091int ERR_pop_to_mark(void) 1092 { 1093 ERR_STATE *es; 1094 1095 es=ERR_get_state(); 1096 1097 while(es->bottom != es->top 1098 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) 1099 { 1100 err_clear(es,es->top); 1101 es->top-=1; 1102 if (es->top == -1) es->top=ERR_NUM_ERRORS-1; 1103 } 1104 1105 if (es->bottom == es->top) return 0; 1106 es->err_flags[es->top]&=~ERR_FLAG_MARK; 1107 return 1; 1108 } 1109