err.c revision 1.29
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#ifdef OPENSSL_SYS_WINDOWS 171 {ERR_PACK(0,SYS_F_WSASTARTUP, 0), "WSAstartup"}, 172#endif 173 {ERR_PACK(0,SYS_F_OPENDIR, 0), "opendir"}, 174 {ERR_PACK(0,SYS_F_FREAD, 0), "fread"}, 175 {0, NULL}, 176}; 177 178static ERR_STRING_DATA ERR_str_reasons[] = { 179 {ERR_R_SYS_LIB , "system lib"}, 180 {ERR_R_BN_LIB , "BN lib"}, 181 {ERR_R_RSA_LIB , "RSA lib"}, 182 {ERR_R_DH_LIB , "DH lib"}, 183 {ERR_R_EVP_LIB , "EVP lib"}, 184 {ERR_R_BUF_LIB , "BUF lib"}, 185 {ERR_R_OBJ_LIB , "OBJ lib"}, 186 {ERR_R_PEM_LIB , "PEM lib"}, 187 {ERR_R_DSA_LIB , "DSA lib"}, 188 {ERR_R_X509_LIB , "X509 lib"}, 189 {ERR_R_ASN1_LIB , "ASN1 lib"}, 190 {ERR_R_CONF_LIB , "CONF lib"}, 191 {ERR_R_CRYPTO_LIB , "CRYPTO lib"}, 192 {ERR_R_EC_LIB , "EC lib"}, 193 {ERR_R_SSL_LIB , "SSL lib"}, 194 {ERR_R_BIO_LIB , "BIO lib"}, 195 {ERR_R_PKCS7_LIB , "PKCS7 lib"}, 196 {ERR_R_X509V3_LIB , "X509V3 lib"}, 197 {ERR_R_PKCS12_LIB , "PKCS12 lib"}, 198 {ERR_R_RAND_LIB , "RAND lib"}, 199 {ERR_R_DSO_LIB , "DSO lib"}, 200 {ERR_R_ENGINE_LIB , "ENGINE lib"}, 201 {ERR_R_OCSP_LIB , "OCSP lib"}, 202 {ERR_R_TS_LIB , "TS lib"}, 203 204 {ERR_R_NESTED_ASN1_ERROR , "nested asn1 error"}, 205 {ERR_R_BAD_ASN1_OBJECT_HEADER , "bad asn1 object header"}, 206 {ERR_R_BAD_GET_ASN1_OBJECT_CALL , "bad get asn1 object call"}, 207 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE , "expecting an asn1 sequence"}, 208 {ERR_R_ASN1_LENGTH_MISMATCH , "asn1 length mismatch"}, 209 {ERR_R_MISSING_ASN1_EOS , "missing asn1 eos"}, 210 211 {ERR_R_FATAL , "fatal"}, 212 {ERR_R_MALLOC_FAILURE , "malloc failure"}, 213 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED , "called a function you should not call"}, 214 {ERR_R_PASSED_NULL_PARAMETER , "passed a null parameter"}, 215 {ERR_R_INTERNAL_ERROR , "internal error"}, 216 {ERR_R_DISABLED , "called a function that was disabled at compile-time"}, 217 218 {0, NULL}, 219}; 220#endif 221 222 223/* Define the predeclared (but externally opaque) "ERR_FNS" type */ 224struct st_ERR_FNS { 225 /* Works on the "error_hash" string table */ 226 LHASH_OF(ERR_STRING_DATA) *(*cb_err_get)(int create); 227 void (*cb_err_del)(void); 228 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 229 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 230 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 231 /* Works on the "thread_hash" error-state table */ 232 LHASH_OF(ERR_STATE) *(*cb_thread_get)(int create); 233 void (*cb_thread_release)(LHASH_OF(ERR_STATE) **hash); 234 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 235 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 236 void (*cb_thread_del_item)(const ERR_STATE *); 237 /* Returns the next available error "library" numbers */ 238 int (*cb_get_next_lib)(void); 239}; 240 241/* Predeclarations of the "err_defaults" functions */ 242static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create); 243static void int_err_del(void); 244static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 245static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 246static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 247static LHASH_OF(ERR_STATE) *int_thread_get(int create); 248static void int_thread_release(LHASH_OF(ERR_STATE) **hash); 249static ERR_STATE *int_thread_get_item(const ERR_STATE *); 250static ERR_STATE *int_thread_set_item(ERR_STATE *); 251static void int_thread_del_item(const ERR_STATE *); 252static int int_err_get_next_lib(void); 253 254/* The static ERR_FNS table using these defaults functions */ 255static const ERR_FNS err_defaults = { 256 int_err_get, 257 int_err_del, 258 int_err_get_item, 259 int_err_set_item, 260 int_err_del_item, 261 int_thread_get, 262 int_thread_release, 263 int_thread_get_item, 264 int_thread_set_item, 265 int_thread_del_item, 266 int_err_get_next_lib 267}; 268 269/* The replacable table of ERR_FNS functions we use at run-time */ 270static const ERR_FNS *err_fns = NULL; 271 272/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 273#define ERRFN(a) err_fns->cb_##a 274 275/* The internal state used by "err_defaults" - as such, the setting, reading, 276 * creating, and deleting of this data should only be permitted via the 277 * "err_defaults" functions. This way, a linked module can completely defer all 278 * ERR state operation (together with requisite locking) to the implementations 279 * and state in the loading application. */ 280static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; 281static LHASH_OF(ERR_STATE) *int_thread_hash = NULL; 282static int int_thread_hash_references = 0; 283static int int_err_library_number = ERR_LIB_USER; 284 285/* Internal function that checks whether "err_fns" is set and if not, sets it to 286 * the defaults. */ 287static void 288err_fns_check(void) 289{ 290 if (err_fns) 291 return; 292 293 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 294 if (!err_fns) 295 err_fns = &err_defaults; 296 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 297} 298 299/* API functions to get or set the underlying ERR functions. */ 300 301const ERR_FNS * 302ERR_get_implementation(void) 303{ 304 err_fns_check(); 305 return err_fns; 306} 307 308int 309ERR_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 err_fns = fns; 318 ret = 1; 319 } 320 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 321 return ret; 322} 323 324/* These are the callbacks provided to "lh_new()" when creating the LHASH tables 325 * internal to the "err_defaults" implementation. */ 326 327static unsigned long get_error_values(int inc, int top, const char **file, 328 int *line, const char **data, int *flags); 329 330/* The internal functions used in the "err_defaults" implementation */ 331 332static unsigned long 333err_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 344err_string_data_cmp(const ERR_STRING_DATA *a, 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 351LHASH_OF(ERR_STRING_DATA) *int_err_get(int create) 352{ 353 LHASH_OF(ERR_STRING_DATA) *ret = NULL; 354 355 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 356 if (!int_error_hash && create) { 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 369int_err_del(void) 370{ 371 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 372 if (int_error_hash) { 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 * 380int_err_get_item(const ERR_STRING_DATA *d) 381{ 382 ERR_STRING_DATA *p; 383 LHASH_OF(ERR_STRING_DATA) *hash; 384 385 err_fns_check(); 386 hash = ERRFN(err_get)(0); 387 if (!hash) 388 return NULL; 389 390 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 391 p = lh_ERR_STRING_DATA_retrieve(hash, d); 392 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 393 394 return p; 395} 396 397static ERR_STRING_DATA * 398int_err_set_item(ERR_STRING_DATA *d) 399{ 400 ERR_STRING_DATA *p; 401 LHASH_OF(ERR_STRING_DATA) *hash; 402 403 err_fns_check(); 404 hash = ERRFN(err_get)(1); 405 if (!hash) 406 return NULL; 407 408 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 409 p = lh_ERR_STRING_DATA_insert(hash, d); 410 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 411 412 return p; 413} 414 415static ERR_STRING_DATA * 416int_err_del_item(ERR_STRING_DATA *d) 417{ 418 ERR_STRING_DATA *p; 419 LHASH_OF(ERR_STRING_DATA) *hash; 420 421 err_fns_check(); 422 hash = ERRFN(err_get)(0); 423 if (!hash) 424 return NULL; 425 426 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 427 p = lh_ERR_STRING_DATA_delete(hash, d); 428 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 429 430 return p; 431} 432 433static unsigned long 434err_state_hash(const ERR_STATE *a) 435{ 436 return CRYPTO_THREADID_hash(&a->tid) * 13; 437} 438static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) 439 440static int 441err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) 442{ 443 return CRYPTO_THREADID_cmp(&a->tid, &b->tid); 444} 445static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) 446 447static 448LHASH_OF(ERR_STATE) *int_thread_get(int create) 449{ 450 LHASH_OF(ERR_STATE) *ret = NULL; 451 452 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 453 if (!int_thread_hash && create) { 454 CRYPTO_push_info("int_thread_get (err.c)"); 455 int_thread_hash = lh_ERR_STATE_new(); 456 CRYPTO_pop_info(); 457 } 458 if (int_thread_hash) { 459 int_thread_hash_references++; 460 ret = int_thread_hash; 461 } 462 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 463 return ret; 464} 465 466static void 467int_thread_release(LHASH_OF(ERR_STATE) **hash) 468{ 469 int i; 470 471 if (hash == NULL || *hash == NULL) 472 return; 473 474 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 475 if (i > 0) 476 return; 477 478 *hash = NULL; 479} 480 481static ERR_STATE * 482int_thread_get_item(const ERR_STATE *d) 483{ 484 ERR_STATE *p; 485 LHASH_OF(ERR_STATE) *hash; 486 487 err_fns_check(); 488 hash = ERRFN(thread_get)(0); 489 if (!hash) 490 return NULL; 491 492 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 493 p = lh_ERR_STATE_retrieve(hash, d); 494 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 495 496 ERRFN(thread_release)(&hash); 497 return p; 498} 499 500static ERR_STATE * 501int_thread_set_item(ERR_STATE *d) 502{ 503 ERR_STATE *p; 504 LHASH_OF(ERR_STATE) *hash; 505 506 err_fns_check(); 507 hash = ERRFN(thread_get)(1); 508 if (!hash) 509 return NULL; 510 511 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 512 p = lh_ERR_STATE_insert(hash, d); 513 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 514 515 ERRFN(thread_release)(&hash); 516 return p; 517} 518 519static void 520int_thread_del_item(const ERR_STATE *d) 521{ 522 ERR_STATE *p; 523 LHASH_OF(ERR_STATE) *hash; 524 525 err_fns_check(); 526 hash = ERRFN(thread_get)(0); 527 if (!hash) 528 return; 529 530 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 531 p = lh_ERR_STATE_delete(hash, d); 532 /* make sure we don't leak memory */ 533 if (int_thread_hash_references == 1 && 534 int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) { 535 lh_ERR_STATE_free(int_thread_hash); 536 int_thread_hash = NULL; 537 } 538 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 539 540 ERRFN(thread_release)(&hash); 541 if (p) 542 ERR_STATE_free(p); 543} 544 545static int 546int_err_get_next_lib(void) 547{ 548 int ret; 549 550 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 551 ret = int_err_library_number++; 552 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 553 554 return ret; 555} 556 557 558#ifndef OPENSSL_NO_ERR 559#define NUM_SYS_STR_REASONS 127 560#define LEN_SYS_STR_REASON 32 561 562static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 563/* SYS_str_reasons is filled with copies of strerror() results at 564 * initialization. 565 * 'errno' values up to 127 should cover all usual errors, 566 * others will be displayed numerically by ERR_error_string. 567 * It is crucial that we have something for each reason code 568 * that occurs in ERR_str_reasons, or bogus reason strings 569 * will be returned for SYSerr(), which always gets an errno 570 * value and never one of those 'standard' reason codes. */ 571 572static void 573build_SYS_str_reasons(void) 574{ 575 /* malloc cannot be used here, use static storage instead */ 576 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 577 int i; 578 static int init = 1; 579 580 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 581 if (!init) { 582 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 583 return; 584 } 585 586 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 587 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 588 if (!init) { 589 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 590 return; 591 } 592 593 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { 594 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 595 596 str->error = (unsigned long)i; 597 if (str->string == NULL) { 598 char (*dest)[LEN_SYS_STR_REASON] = 599 &(strerror_tab[i - 1]); 600 char *src = strerror(i); 601 if (src != NULL) { 602 strlcpy(*dest, src, sizeof *dest); 603 str->string = *dest; 604 } 605 } 606 if (str->string == NULL) 607 str->string = "unknown"; 608 } 609 610 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 611 * as required by ERR_load_strings. */ 612 613 init = 0; 614 615 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 616} 617#endif 618 619#define err_clear_data(p,i) \ 620 do { \ 621 if (((p)->err_data[i] != NULL) && \ 622 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 623 { \ 624 free((p)->err_data[i]); \ 625 (p)->err_data[i]=NULL; \ 626 } \ 627 (p)->err_data_flags[i]=0; \ 628 } while(0) 629 630#define err_clear(p,i) \ 631 do { \ 632 (p)->err_flags[i]=0; \ 633 (p)->err_buffer[i]=0; \ 634 err_clear_data(p,i); \ 635 (p)->err_file[i]=NULL; \ 636 (p)->err_line[i]= -1; \ 637 } while(0) 638 639static void 640ERR_STATE_free(ERR_STATE *s) 641{ 642 int i; 643 644 if (s == NULL) 645 return; 646 647 for (i = 0; i < ERR_NUM_ERRORS; i++) { 648 err_clear_data(s, i); 649 } 650 free(s); 651} 652 653void 654ERR_load_ERR_strings(void) 655{ 656 err_fns_check(); 657#ifndef OPENSSL_NO_ERR 658 err_load_strings(0, ERR_str_libraries); 659 err_load_strings(0, ERR_str_reasons); 660 err_load_strings(ERR_LIB_SYS, ERR_str_functs); 661 build_SYS_str_reasons(); 662 err_load_strings(ERR_LIB_SYS, SYS_str_reasons); 663#endif 664} 665 666static void 667err_load_strings(int lib, ERR_STRING_DATA *str) 668{ 669 while (str->error) { 670 if (lib) 671 str->error |= ERR_PACK(lib, 0, 0); 672 ERRFN(err_set_item)(str); 673 str++; 674 } 675} 676 677void 678ERR_load_strings(int lib, ERR_STRING_DATA *str) 679{ 680 ERR_load_ERR_strings(); 681 err_load_strings(lib, str); 682} 683 684void 685ERR_unload_strings(int lib, ERR_STRING_DATA *str) 686{ 687 while (str->error) { 688 if (lib) 689 str->error |= ERR_PACK(lib, 0, 0); 690 ERRFN(err_del_item)(str); 691 str++; 692 } 693} 694 695void 696ERR_free_strings(void) 697{ 698 err_fns_check(); 699 ERRFN(err_del)(); 700} 701 702/********************************************************/ 703 704void 705ERR_put_error(int lib, int func, int reason, const char *file, int line) 706{ 707 ERR_STATE *es; 708 709 es = ERR_get_state(); 710 711 es->top = (es->top + 1) % ERR_NUM_ERRORS; 712 if (es->top == es->bottom) 713 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; 714 es->err_flags[es->top] = 0; 715 es->err_buffer[es->top] = ERR_PACK(lib, func, reason); 716 es->err_file[es->top] = file; 717 es->err_line[es->top] = line; 718 err_clear_data(es, es->top); 719} 720 721void 722ERR_clear_error(void) 723{ 724 int i; 725 ERR_STATE *es; 726 727 es = ERR_get_state(); 728 729 for (i = 0; i < ERR_NUM_ERRORS; i++) { 730 err_clear(es, i); 731 } 732 es->top = es->bottom = 0; 733} 734 735 736unsigned long ERR_get_error(void) 737{ 738 return (get_error_values(1, 0,NULL, NULL, NULL, NULL)); 739} 740 741unsigned long ERR_get_error_line(const char **file, int *line) 742{ 743 return (get_error_values(1, 0,file, line, NULL, NULL)); 744} 745 746unsigned long ERR_get_error_line_data(const char **file, int *line, 747 const char **data, int *flags) 748{ 749 return (get_error_values(1, 0,file, line, data, flags)); 750} 751 752 753unsigned long ERR_peek_error(void) 754{ 755 return (get_error_values(0, 0,NULL, NULL, NULL, NULL)); 756} 757 758unsigned long ERR_peek_error_line(const char **file, int *line) 759{ 760 return (get_error_values(0, 0,file, line, NULL, NULL)); 761} 762 763unsigned long ERR_peek_error_line_data(const char **file, int *line, 764 const char **data, int *flags) 765{ 766 return (get_error_values(0, 0,file, line, data, flags)); 767} 768 769unsigned long ERR_peek_last_error(void) 770{ 771 return (get_error_values(0, 1,NULL, NULL, NULL, NULL)); 772} 773 774unsigned long ERR_peek_last_error_line(const char **file, int *line) 775{ 776 return (get_error_values(0, 1,file, line, NULL, NULL)); 777} 778 779unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 780 const char **data, int *flags) 781{ 782 return (get_error_values(0, 1,file, line, data, flags)); 783} 784 785static unsigned 786long get_error_values(int inc, int top, const char **file, int *line, 787 const char **data, int *flags) 788{ 789 int i = 0; 790 ERR_STATE *es; 791 unsigned long ret; 792 793 es = ERR_get_state(); 794 795 if (inc && top) { 796 if (file) 797 *file = ""; 798 if (line) 799 *line = 0; 800 if (data) 801 *data = ""; 802 if (flags) 803 *flags = 0; 804 805 return ERR_R_INTERNAL_ERROR; 806 } 807 808 if (es->bottom == es->top) 809 return 0; 810 if (top) 811 i = es->top; /* last error */ 812 else 813 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */ 814 815 ret = es->err_buffer[i]; 816 if (inc) { 817 es->bottom = i; 818 es->err_buffer[i] = 0; 819 } 820 821 if ((file != NULL) && (line != NULL)) { 822 if (es->err_file[i] == NULL) { 823 *file = "NA"; 824 if (line != NULL) 825 *line = 0; 826 } else { 827 *file = es->err_file[i]; 828 if (line != NULL) 829 *line = es->err_line[i]; 830 } 831 } 832 833 if (data == NULL) { 834 if (inc) { 835 err_clear_data(es, i); 836 } 837 } else { 838 if (es->err_data[i] == NULL) { 839 *data = ""; 840 if (flags != NULL) 841 *flags = 0; 842 } else { 843 *data = es->err_data[i]; 844 if (flags != NULL) 845 *flags = es->err_data_flags[i]; 846 } 847 } 848 return ret; 849} 850 851void 852ERR_error_string_n(unsigned long e, char *buf, size_t len) 853{ 854 char lsbuf[30], fsbuf[30], rsbuf[30]; 855 const char *ls, *fs, *rs; 856 int l, f, r, ret; 857 858 l = ERR_GET_LIB(e); 859 f = ERR_GET_FUNC(e); 860 r = ERR_GET_REASON(e); 861 862 ls = ERR_lib_error_string(e); 863 fs = ERR_func_error_string(e); 864 rs = ERR_reason_error_string(e); 865 866 if (ls == NULL) { 867 (void) snprintf(lsbuf, sizeof(lsbuf), "lib(%d)", l); 868 ls = lsbuf; 869 } 870 if (fs == NULL) { 871 (void) snprintf(fsbuf, sizeof(fsbuf), "func(%d)", f); 872 fs = fsbuf; 873 } 874 if (rs == NULL) { 875 (void) snprintf(rsbuf, sizeof(rsbuf), "reason(%d)", r); 876 rs = rsbuf; 877 } 878 879 ret = snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs); 880 if (ret == -1) 881 return; /* can't happen, and can't do better if it does */ 882 if (ret >= len) { 883 /* output may be truncated; make sure we always have 5 884 * colon-separated fields, i.e. 4 colons ... */ 885#define NUM_COLONS 4 886 if (len > NUM_COLONS) /* ... if possible */ 887 { 888 int i; 889 char *s = buf; 890 891 for (i = 0; i < NUM_COLONS; i++) { 892 char *colon = strchr(s, ':'); 893 if (colon == NULL || 894 colon > &buf[len - 1] - NUM_COLONS + i) { 895 /* set colon no. i at last possible position 896 * (buf[len-1] is the terminating 0)*/ 897 colon = &buf[len - 1] - NUM_COLONS + i; 898 *colon = ':'; 899 } 900 s = colon + 1; 901 } 902 } 903 } 904} 905 906/* BAD for multi-threading: uses a local buffer if ret == NULL */ 907/* ERR_error_string_n should be used instead for ret != NULL 908 * as ERR_error_string cannot know how large the buffer is */ 909char * 910ERR_error_string(unsigned long e, char *ret) 911{ 912 static char buf[256]; 913 914 if (ret == NULL) 915 ret = buf; 916 ERR_error_string_n(e, ret, 256); 917 918 return ret; 919} 920 921LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void) 922{ 923 err_fns_check(); 924 return ERRFN(err_get)(0); 925} 926 927LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void) 928{ 929 err_fns_check(); 930 return ERRFN(thread_get)(0); 931} 932 933void 934ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash) 935{ 936 err_fns_check(); 937 ERRFN(thread_release)(hash); 938} 939 940const char * 941ERR_lib_error_string(unsigned long e) 942{ 943 ERR_STRING_DATA d, *p; 944 unsigned long l; 945 946 err_fns_check(); 947 l = ERR_GET_LIB(e); 948 d.error = ERR_PACK(l, 0, 0); 949 p = ERRFN(err_get_item)(&d); 950 return ((p == NULL) ? NULL : p->string); 951} 952 953const char * 954ERR_func_error_string(unsigned long e) 955{ 956 ERR_STRING_DATA d, *p; 957 unsigned long l, f; 958 959 err_fns_check(); 960 l = ERR_GET_LIB(e); 961 f = ERR_GET_FUNC(e); 962 d.error = ERR_PACK(l, f, 0); 963 p = ERRFN(err_get_item)(&d); 964 return ((p == NULL) ? NULL : p->string); 965} 966 967const char * 968ERR_reason_error_string(unsigned long e) 969{ 970 ERR_STRING_DATA d, *p = NULL; 971 unsigned long l, r; 972 973 err_fns_check(); 974 l = ERR_GET_LIB(e); 975 r = ERR_GET_REASON(e); 976 d.error = ERR_PACK(l, 0, r); 977 p = ERRFN(err_get_item)(&d); 978 if (!p) { 979 d.error = ERR_PACK(0, 0, r); 980 p = ERRFN(err_get_item)(&d); 981 } 982 return ((p == NULL) ? NULL : p->string); 983} 984 985void 986ERR_remove_thread_state(const CRYPTO_THREADID *id) 987{ 988 ERR_STATE tmp; 989 990 if (id) 991 CRYPTO_THREADID_cpy(&tmp.tid, id); 992 else 993 CRYPTO_THREADID_current(&tmp.tid); 994 err_fns_check(); 995 /* thread_del_item automatically destroys the LHASH if the number of 996 * items reaches zero. */ 997 ERRFN(thread_del_item)(&tmp); 998} 999 1000#ifndef OPENSSL_NO_DEPRECATED 1001void 1002ERR_remove_state(unsigned long pid) 1003{ 1004 ERR_remove_thread_state(NULL); 1005} 1006#endif 1007 1008ERR_STATE * 1009ERR_get_state(void) 1010{ 1011 static ERR_STATE fallback; 1012 ERR_STATE *ret, tmp, *tmpp = NULL; 1013 int i; 1014 CRYPTO_THREADID tid; 1015 1016 err_fns_check(); 1017 CRYPTO_THREADID_current(&tid); 1018 CRYPTO_THREADID_cpy(&tmp.tid, &tid); 1019 ret = ERRFN(thread_get_item)(&tmp); 1020 1021 /* ret == the error state, if NULL, make a new one */ 1022 if (ret == NULL) { 1023 ret = (ERR_STATE *)malloc(sizeof(ERR_STATE)); 1024 if (ret == NULL) 1025 return (&fallback); 1026 CRYPTO_THREADID_cpy(&ret->tid, &tid); 1027 ret->top = 0; 1028 ret->bottom = 0; 1029 for (i = 0; i < ERR_NUM_ERRORS; i++) { 1030 ret->err_data[i] = NULL; 1031 ret->err_data_flags[i] = 0; 1032 } 1033 tmpp = ERRFN(thread_set_item)(ret); 1034 /* To check if insertion failed, do a get. */ 1035 if (ERRFN(thread_get_item)(ret) != ret) { 1036 ERR_STATE_free(ret); /* could not insert it */ 1037 return (&fallback); 1038 } 1039 /* If a race occured in this function and we came second, tmpp 1040 * is the first one that we just replaced. */ 1041 if (tmpp) 1042 ERR_STATE_free(tmpp); 1043 } 1044 return ret; 1045} 1046 1047int 1048ERR_get_next_error_library(void) 1049{ 1050 err_fns_check(); 1051 return ERRFN(get_next_lib)(); 1052} 1053 1054void 1055ERR_set_error_data(char *data, int flags) 1056{ 1057 ERR_STATE *es; 1058 int i; 1059 1060 es = ERR_get_state(); 1061 1062 i = es->top; 1063 if (i == 0) 1064 i = ERR_NUM_ERRORS - 1; 1065 1066 err_clear_data(es, i); 1067 es->err_data[i] = data; 1068 es->err_data_flags[i] = flags; 1069} 1070 1071void 1072ERR_add_error_data(int num, ...) 1073{ 1074 va_list args; 1075 va_start(args, num); 1076 ERR_add_error_vdata(num, args); 1077 va_end(args); 1078} 1079 1080void 1081ERR_add_error_vdata(int num, va_list args) 1082{ 1083 int i, n, s; 1084 char *str, *p, *a; 1085 1086 s = 80; 1087 str = malloc(s + 1); 1088 if (str == NULL) 1089 return; 1090 str[0] = '\0'; 1091 1092 n = 0; 1093 for (i = 0; i < num; i++) { 1094 a = va_arg(args, char*); 1095 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 1096 if (a != NULL) { 1097 n += strlen(a); 1098 if (n > s) { 1099 s = n + 20; 1100 p = realloc(str, s + 1); 1101 if (p == NULL) { 1102 free(str); 1103 return; 1104 } else 1105 str = p; 1106 } 1107 strlcat(str, a, (size_t)s + 1); 1108 } 1109 } 1110 ERR_set_error_data(str, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1111} 1112 1113int 1114ERR_set_mark(void) 1115{ 1116 ERR_STATE *es; 1117 1118 es = ERR_get_state(); 1119 1120 if (es->bottom == es->top) 1121 return 0; 1122 es->err_flags[es->top] |= ERR_FLAG_MARK; 1123 return 1; 1124} 1125 1126int 1127ERR_pop_to_mark(void) 1128{ 1129 ERR_STATE *es; 1130 1131 es = ERR_get_state(); 1132 1133 while (es->bottom != es->top && 1134 (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { 1135 err_clear(es, es->top); 1136 es->top -= 1; 1137 if (es->top == -1) 1138 es->top = ERR_NUM_ERRORS - 1; 1139 } 1140 1141 if (es->bottom == es->top) 1142 return 0; 1143 es->err_flags[es->top]&=~ERR_FLAG_MARK; 1144 return 1; 1145} 1146