err.c revision 1.39
1/* $OpenBSD: err.c,v 1.39 2014/08/24 16:11:39 bcook Exp $ */ 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 <stdarg.h> 113#include <stdio.h> 114#include <string.h> 115 116#include <openssl/opensslconf.h> 117 118#include <openssl/bio.h> 119#include <openssl/buffer.h> 120#include <openssl/crypto.h> 121#include <openssl/err.h> 122#include <openssl/lhash.h> 123 124DECLARE_LHASH_OF(ERR_STRING_DATA); 125DECLARE_LHASH_OF(ERR_STATE); 126 127static void err_load_strings(int lib, ERR_STRING_DATA *str); 128 129static void ERR_STATE_free(ERR_STATE *s); 130#ifndef OPENSSL_NO_ERR 131static ERR_STRING_DATA ERR_str_libraries[] = { 132 {ERR_PACK(ERR_LIB_NONE,0,0), "unknown library"}, 133 {ERR_PACK(ERR_LIB_SYS,0,0), "system library"}, 134 {ERR_PACK(ERR_LIB_BN,0,0), "bignum routines"}, 135 {ERR_PACK(ERR_LIB_RSA,0,0), "rsa routines"}, 136 {ERR_PACK(ERR_LIB_DH,0,0), "Diffie-Hellman routines"}, 137 {ERR_PACK(ERR_LIB_EVP,0,0), "digital envelope routines"}, 138 {ERR_PACK(ERR_LIB_BUF,0,0), "memory buffer routines"}, 139 {ERR_PACK(ERR_LIB_OBJ,0,0), "object identifier routines"}, 140 {ERR_PACK(ERR_LIB_PEM,0,0), "PEM routines"}, 141 {ERR_PACK(ERR_LIB_DSA,0,0), "dsa routines"}, 142 {ERR_PACK(ERR_LIB_X509,0,0), "x509 certificate routines"}, 143 {ERR_PACK(ERR_LIB_ASN1,0,0), "asn1 encoding routines"}, 144 {ERR_PACK(ERR_LIB_CONF,0,0), "configuration file routines"}, 145 {ERR_PACK(ERR_LIB_CRYPTO,0,0), "common libcrypto routines"}, 146 {ERR_PACK(ERR_LIB_EC,0,0), "elliptic curve routines"}, 147 {ERR_PACK(ERR_LIB_SSL,0,0), "SSL routines"}, 148 {ERR_PACK(ERR_LIB_BIO,0,0), "BIO routines"}, 149 {ERR_PACK(ERR_LIB_PKCS7,0,0), "PKCS7 routines"}, 150 {ERR_PACK(ERR_LIB_X509V3,0,0), "X509 V3 routines"}, 151 {ERR_PACK(ERR_LIB_PKCS12,0,0), "PKCS12 routines"}, 152 {ERR_PACK(ERR_LIB_RAND,0,0), "random number generator"}, 153 {ERR_PACK(ERR_LIB_DSO,0,0), "DSO support routines"}, 154 {ERR_PACK(ERR_LIB_TS,0,0), "time stamp routines"}, 155 {ERR_PACK(ERR_LIB_ENGINE,0,0), "engine routines"}, 156 {ERR_PACK(ERR_LIB_OCSP,0,0), "OCSP routines"}, 157 {ERR_PACK(ERR_LIB_FIPS,0,0), "FIPS routines"}, 158 {ERR_PACK(ERR_LIB_CMS,0,0), "CMS routines"}, 159 {ERR_PACK(ERR_LIB_HMAC,0,0), "HMAC routines"}, 160 {0, NULL}, 161}; 162 163static ERR_STRING_DATA ERR_str_functs[] = { 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 {ERR_PACK(0,SYS_F_OPENDIR, 0), "opendir"}, 173 {ERR_PACK(0,SYS_F_FREAD, 0), "fread"}, 174 {0, NULL}, 175}; 176 177static ERR_STRING_DATA ERR_str_reasons[] = { 178 {ERR_R_SYS_LIB, "system lib"}, 179 {ERR_R_BN_LIB, "BN lib"}, 180 {ERR_R_RSA_LIB, "RSA lib"}, 181 {ERR_R_DH_LIB, "DH lib"}, 182 {ERR_R_EVP_LIB, "EVP lib"}, 183 {ERR_R_BUF_LIB, "BUF lib"}, 184 {ERR_R_OBJ_LIB, "OBJ lib"}, 185 {ERR_R_PEM_LIB, "PEM lib"}, 186 {ERR_R_DSA_LIB, "DSA lib"}, 187 {ERR_R_X509_LIB, "X509 lib"}, 188 {ERR_R_ASN1_LIB, "ASN1 lib"}, 189 {ERR_R_CONF_LIB, "CONF lib"}, 190 {ERR_R_CRYPTO_LIB, "CRYPTO lib"}, 191 {ERR_R_EC_LIB, "EC lib"}, 192 {ERR_R_SSL_LIB, "SSL lib"}, 193 {ERR_R_BIO_LIB, "BIO lib"}, 194 {ERR_R_PKCS7_LIB, "PKCS7 lib"}, 195 {ERR_R_X509V3_LIB, "X509V3 lib"}, 196 {ERR_R_PKCS12_LIB, "PKCS12 lib"}, 197 {ERR_R_RAND_LIB, "RAND lib"}, 198 {ERR_R_DSO_LIB, "DSO lib"}, 199 {ERR_R_ENGINE_LIB, "ENGINE lib"}, 200 {ERR_R_OCSP_LIB, "OCSP lib"}, 201 {ERR_R_TS_LIB, "TS lib"}, 202 203 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"}, 204 {ERR_R_BAD_ASN1_OBJECT_HEADER, "bad asn1 object header"}, 205 {ERR_R_BAD_GET_ASN1_OBJECT_CALL, "bad get asn1 object call"}, 206 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE, "expecting an asn1 sequence"}, 207 {ERR_R_ASN1_LENGTH_MISMATCH, "asn1 length mismatch"}, 208 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"}, 209 210 {ERR_R_FATAL, "fatal"}, 211 {ERR_R_MALLOC_FAILURE, "malloc failure"}, 212 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, "called a function you should not call"}, 213 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"}, 214 {ERR_R_INTERNAL_ERROR, "internal error"}, 215 {ERR_R_DISABLED , "called a function that was disabled at compile-time"}, 216 217 {0, NULL}, 218}; 219#endif 220 221 222/* Define the predeclared (but externally opaque) "ERR_FNS" type */ 223struct st_ERR_FNS { 224 /* Works on the "error_hash" string table */ 225 LHASH_OF(ERR_STRING_DATA) *(*cb_err_get)(int create); 226 void (*cb_err_del)(void); 227 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 228 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 229 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 230 /* Works on the "thread_hash" error-state table */ 231 LHASH_OF(ERR_STATE) *(*cb_thread_get)(int create); 232 void (*cb_thread_release)(LHASH_OF(ERR_STATE) **hash); 233 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 234 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 235 void (*cb_thread_del_item)(const ERR_STATE *); 236 /* Returns the next available error "library" numbers */ 237 int (*cb_get_next_lib)(void); 238}; 239 240/* Predeclarations of the "err_defaults" functions */ 241static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create); 242static void int_err_del(void); 243static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 244static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 245static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 246static LHASH_OF(ERR_STATE) *int_thread_get(int create); 247static void int_thread_release(LHASH_OF(ERR_STATE) **hash); 248static ERR_STATE *int_thread_get_item(const ERR_STATE *); 249static ERR_STATE *int_thread_set_item(ERR_STATE *); 250static void int_thread_del_item(const ERR_STATE *); 251static int int_err_get_next_lib(void); 252 253/* The static ERR_FNS table using these defaults functions */ 254static const ERR_FNS err_defaults = { 255 int_err_get, 256 int_err_del, 257 int_err_get_item, 258 int_err_set_item, 259 int_err_del_item, 260 int_thread_get, 261 int_thread_release, 262 int_thread_get_item, 263 int_thread_set_item, 264 int_thread_del_item, 265 int_err_get_next_lib 266}; 267 268/* The replacable table of ERR_FNS functions we use at run-time */ 269static const ERR_FNS *err_fns = NULL; 270 271/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 272#define ERRFN(a) err_fns->cb_##a 273 274/* The internal state used by "err_defaults" - as such, the setting, reading, 275 * creating, and deleting of this data should only be permitted via the 276 * "err_defaults" functions. This way, a linked module can completely defer all 277 * ERR state operation (together with requisite locking) to the implementations 278 * and state in the loading application. */ 279static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; 280static LHASH_OF(ERR_STATE) *int_thread_hash = NULL; 281static int int_thread_hash_references = 0; 282static int int_err_library_number = ERR_LIB_USER; 283 284/* Internal function that checks whether "err_fns" is set and if not, sets it to 285 * the defaults. */ 286static void 287err_fns_check(void) 288{ 289 if (err_fns) 290 return; 291 292 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 293 if (!err_fns) 294 err_fns = &err_defaults; 295 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 296} 297 298/* API functions to get or set the underlying ERR functions. */ 299 300const ERR_FNS * 301ERR_get_implementation(void) 302{ 303 err_fns_check(); 304 return err_fns; 305} 306 307int 308ERR_set_implementation(const ERR_FNS *fns) 309{ 310 int ret = 0; 311 312 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 313 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 314 * an error is there?! */ 315 if (!err_fns) { 316 err_fns = fns; 317 ret = 1; 318 } 319 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 320 return ret; 321} 322 323/* These are the callbacks provided to "lh_new()" when creating the LHASH tables 324 * internal to the "err_defaults" implementation. */ 325 326static unsigned long get_error_values(int inc, int top, const char **file, 327 int *line, const char **data, int *flags); 328 329/* The internal functions used in the "err_defaults" implementation */ 330 331static unsigned long 332err_string_data_hash(const ERR_STRING_DATA *a) 333{ 334 unsigned long ret, l; 335 336 l = a->error; 337 ret = l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 338 return (ret^ret % 19*13); 339} 340static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA) 341 342static int 343err_string_data_cmp(const ERR_STRING_DATA *a, const ERR_STRING_DATA *b) 344{ 345 return (int)(a->error - b->error); 346} 347static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA) 348 349static 350LHASH_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 CRYPTO_push_info("int_err_get (err.c)"); 357 int_error_hash = lh_ERR_STRING_DATA_new(); 358 CRYPTO_pop_info(); 359 } 360 if (int_error_hash) 361 ret = int_error_hash; 362 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 363 364 return ret; 365} 366 367static void 368int_err_del(void) 369{ 370 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 371 if (int_error_hash) { 372 lh_ERR_STRING_DATA_free(int_error_hash); 373 int_error_hash = NULL; 374 } 375 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 376} 377 378static ERR_STRING_DATA * 379int_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 * 397int_err_set_item(ERR_STRING_DATA *d) 398{ 399 ERR_STRING_DATA *p; 400 LHASH_OF(ERR_STRING_DATA) *hash; 401 402 err_fns_check(); 403 hash = ERRFN(err_get)(1); 404 if (!hash) 405 return NULL; 406 407 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 408 p = lh_ERR_STRING_DATA_insert(hash, d); 409 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 410 411 return p; 412} 413 414static ERR_STRING_DATA * 415int_err_del_item(ERR_STRING_DATA *d) 416{ 417 ERR_STRING_DATA *p; 418 LHASH_OF(ERR_STRING_DATA) *hash; 419 420 err_fns_check(); 421 hash = ERRFN(err_get)(0); 422 if (!hash) 423 return NULL; 424 425 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 426 p = lh_ERR_STRING_DATA_delete(hash, d); 427 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 428 429 return p; 430} 431 432static unsigned long 433err_state_hash(const ERR_STATE *a) 434{ 435 return CRYPTO_THREADID_hash(&a->tid) * 13; 436} 437static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) 438 439static int 440err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) 441{ 442 return CRYPTO_THREADID_cmp(&a->tid, &b->tid); 443} 444static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) 445 446static 447LHASH_OF(ERR_STATE) *int_thread_get(int create) 448{ 449 LHASH_OF(ERR_STATE) *ret = NULL; 450 451 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 452 if (!int_thread_hash && create) { 453 CRYPTO_push_info("int_thread_get (err.c)"); 454 int_thread_hash = lh_ERR_STATE_new(); 455 CRYPTO_pop_info(); 456 } 457 if (int_thread_hash) { 458 int_thread_hash_references++; 459 ret = int_thread_hash; 460 } 461 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 462 return ret; 463} 464 465static void 466int_thread_release(LHASH_OF(ERR_STATE) **hash) 467{ 468 int i; 469 470 if (hash == NULL || *hash == NULL) 471 return; 472 473 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 474 if (i > 0) 475 return; 476 477 *hash = NULL; 478} 479 480static ERR_STATE * 481int_thread_get_item(const ERR_STATE *d) 482{ 483 ERR_STATE *p; 484 LHASH_OF(ERR_STATE) *hash; 485 486 err_fns_check(); 487 hash = ERRFN(thread_get)(0); 488 if (!hash) 489 return NULL; 490 491 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 492 p = lh_ERR_STATE_retrieve(hash, d); 493 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 494 495 ERRFN(thread_release)(&hash); 496 return p; 497} 498 499static ERR_STATE * 500int_thread_set_item(ERR_STATE *d) 501{ 502 ERR_STATE *p; 503 LHASH_OF(ERR_STATE) *hash; 504 505 err_fns_check(); 506 hash = ERRFN(thread_get)(1); 507 if (!hash) 508 return NULL; 509 510 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 511 p = lh_ERR_STATE_insert(hash, d); 512 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 513 514 ERRFN(thread_release)(&hash); 515 return p; 516} 517 518static void 519int_thread_del_item(const ERR_STATE *d) 520{ 521 ERR_STATE *p; 522 LHASH_OF(ERR_STATE) *hash; 523 524 err_fns_check(); 525 hash = ERRFN(thread_get)(0); 526 if (!hash) 527 return; 528 529 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 530 p = lh_ERR_STATE_delete(hash, d); 531 /* make sure we don't leak memory */ 532 if (int_thread_hash_references == 1 && 533 int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) { 534 lh_ERR_STATE_free(int_thread_hash); 535 int_thread_hash = NULL; 536 } 537 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 538 539 ERRFN(thread_release)(&hash); 540 if (p) 541 ERR_STATE_free(p); 542} 543 544static int 545int_err_get_next_lib(void) 546{ 547 int ret; 548 549 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 550 ret = int_err_library_number++; 551 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 552 553 return ret; 554} 555 556 557#ifndef OPENSSL_NO_ERR 558#define NUM_SYS_STR_REASONS 127 559#define LEN_SYS_STR_REASON 32 560 561static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 562/* SYS_str_reasons is filled with copies of strerror() results at 563 * initialization. 564 * 'errno' values up to 127 should cover all usual errors, 565 * others will be displayed numerically by ERR_error_string. 566 * It is crucial that we have something for each reason code 567 * that occurs in ERR_str_reasons, or bogus reason strings 568 * will be returned for SYSerr(), which always gets an errno 569 * value and never one of those 'standard' reason codes. */ 570 571static void 572build_SYS_str_reasons(void) 573{ 574 /* malloc cannot be used here, use static storage instead */ 575 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 576 int i; 577 static int init = 1; 578 579 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 580 if (!init) { 581 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 582 return; 583 } 584 585 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 586 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 587 if (!init) { 588 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 589 return; 590 } 591 592 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { 593 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 594 595 str->error = (unsigned long)i; 596 if (str->string == NULL) { 597 char (*dest)[LEN_SYS_STR_REASON] = 598 &(strerror_tab[i - 1]); 599 const char *src = strerror(i); 600 if (src != NULL) { 601 strlcpy(*dest, src, sizeof *dest); 602 str->string = *dest; 603 } 604 } 605 if (str->string == NULL) 606 str->string = "unknown"; 607 } 608 609 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 610 * as required by ERR_load_strings. */ 611 612 init = 0; 613 614 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 615} 616#endif 617 618#define err_clear_data(p,i) \ 619 do { \ 620 if (((p)->err_data[i] != NULL) && \ 621 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) { \ 622 free((p)->err_data[i]); \ 623 (p)->err_data[i] = NULL; \ 624 } \ 625 (p)->err_data_flags[i] = 0; \ 626 } while(0) 627 628#define err_clear(p,i) \ 629 do { \ 630 (p)->err_flags[i] = 0; \ 631 (p)->err_buffer[i] = 0; \ 632 err_clear_data(p, i); \ 633 (p)->err_file[i] = NULL; \ 634 (p)->err_line[i] = -1; \ 635 } while(0) 636 637static void 638ERR_STATE_free(ERR_STATE *s) 639{ 640 int i; 641 642 if (s == NULL) 643 return; 644 645 for (i = 0; i < ERR_NUM_ERRORS; i++) { 646 err_clear_data(s, i); 647 } 648 free(s); 649} 650 651void 652ERR_load_ERR_strings(void) 653{ 654 err_fns_check(); 655#ifndef OPENSSL_NO_ERR 656 err_load_strings(0, ERR_str_libraries); 657 err_load_strings(0, ERR_str_reasons); 658 err_load_strings(ERR_LIB_SYS, ERR_str_functs); 659 build_SYS_str_reasons(); 660 err_load_strings(ERR_LIB_SYS, SYS_str_reasons); 661#endif 662} 663 664static void 665err_load_strings(int lib, ERR_STRING_DATA *str) 666{ 667 while (str->error) { 668 if (lib) 669 str->error |= ERR_PACK(lib, 0, 0); 670 ERRFN(err_set_item)(str); 671 str++; 672 } 673} 674 675void 676ERR_load_strings(int lib, ERR_STRING_DATA *str) 677{ 678 ERR_load_ERR_strings(); 679 err_load_strings(lib, str); 680} 681 682void 683ERR_unload_strings(int lib, ERR_STRING_DATA *str) 684{ 685 while (str->error) { 686 if (lib) 687 str->error |= ERR_PACK(lib, 0, 0); 688 ERRFN(err_del_item)(str); 689 str++; 690 } 691} 692 693void 694ERR_free_strings(void) 695{ 696 err_fns_check(); 697 ERRFN(err_del)(); 698} 699 700/********************************************************/ 701 702void 703ERR_put_error(int lib, int func, int reason, const char *file, int line) 704{ 705 ERR_STATE *es; 706 int save_errno = errno; 707 708 es = ERR_get_state(); 709 710 es->top = (es->top + 1) % ERR_NUM_ERRORS; 711 if (es->top == es->bottom) 712 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; 713 es->err_flags[es->top] = 0; 714 es->err_buffer[es->top] = ERR_PACK(lib, func, reason); 715 es->err_file[es->top] = file; 716 es->err_line[es->top] = line; 717 err_clear_data(es, es->top); 718 errno = save_errno; 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 737ERR_get_error(void) 738{ 739 return (get_error_values(1, 0, NULL, NULL, NULL, NULL)); 740} 741 742unsigned long 743ERR_get_error_line(const char **file, int *line) 744{ 745 return (get_error_values(1, 0, file, line, NULL, NULL)); 746} 747 748unsigned long 749ERR_get_error_line_data(const char **file, int *line, 750 const char **data, int *flags) 751{ 752 return (get_error_values(1, 0, file, line, data, flags)); 753} 754 755 756unsigned long 757ERR_peek_error(void) 758{ 759 return (get_error_values(0, 0, NULL, NULL, NULL, NULL)); 760} 761 762unsigned long 763ERR_peek_error_line(const char **file, int *line) 764{ 765 return (get_error_values(0, 0, file, line, NULL, NULL)); 766} 767 768unsigned long 769ERR_peek_error_line_data(const char **file, int *line, 770 const char **data, int *flags) 771{ 772 return (get_error_values(0, 0, file, line, data, flags)); 773} 774 775unsigned long 776ERR_peek_last_error(void) 777{ 778 return (get_error_values(0, 1, NULL, NULL, NULL, NULL)); 779} 780 781unsigned long 782ERR_peek_last_error_line(const char **file, int *line) 783{ 784 return (get_error_values(0, 1, file, line, NULL, NULL)); 785} 786 787unsigned long 788ERR_peek_last_error_line_data(const char **file, int *line, 789 const char **data, int *flags) 790{ 791 return (get_error_values(0, 1, file, line, data, flags)); 792} 793 794static unsigned long 795get_error_values(int inc, int top, const char **file, int *line, 796 const char **data, int *flags) 797{ 798 int i = 0; 799 ERR_STATE *es; 800 unsigned long ret; 801 802 es = ERR_get_state(); 803 804 if (inc && top) { 805 if (file) 806 *file = ""; 807 if (line) 808 *line = 0; 809 if (data) 810 *data = ""; 811 if (flags) 812 *flags = 0; 813 814 return ERR_R_INTERNAL_ERROR; 815 } 816 817 if (es->bottom == es->top) 818 return 0; 819 if (top) 820 i = es->top; /* last error */ 821 else 822 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */ 823 824 ret = es->err_buffer[i]; 825 if (inc) { 826 es->bottom = i; 827 es->err_buffer[i] = 0; 828 } 829 830 if ((file != NULL) && (line != NULL)) { 831 if (es->err_file[i] == NULL) { 832 *file = "NA"; 833 if (line != NULL) 834 *line = 0; 835 } else { 836 *file = es->err_file[i]; 837 if (line != NULL) 838 *line = es->err_line[i]; 839 } 840 } 841 842 if (data == NULL) { 843 if (inc) { 844 err_clear_data(es, i); 845 } 846 } else { 847 if (es->err_data[i] == NULL) { 848 *data = ""; 849 if (flags != NULL) 850 *flags = 0; 851 } else { 852 *data = es->err_data[i]; 853 if (flags != NULL) 854 *flags = es->err_data_flags[i]; 855 } 856 } 857 return ret; 858} 859 860void 861ERR_error_string_n(unsigned long e, char *buf, size_t len) 862{ 863 char lsbuf[30], fsbuf[30], rsbuf[30]; 864 const char *ls, *fs, *rs; 865 int l, f, r, ret; 866 867 l = ERR_GET_LIB(e); 868 f = ERR_GET_FUNC(e); 869 r = ERR_GET_REASON(e); 870 871 ls = ERR_lib_error_string(e); 872 fs = ERR_func_error_string(e); 873 rs = ERR_reason_error_string(e); 874 875 if (ls == NULL) { 876 (void) snprintf(lsbuf, sizeof(lsbuf), "lib(%d)", l); 877 ls = lsbuf; 878 } 879 if (fs == NULL) { 880 (void) snprintf(fsbuf, sizeof(fsbuf), "func(%d)", f); 881 fs = fsbuf; 882 } 883 if (rs == NULL) { 884 (void) snprintf(rsbuf, sizeof(rsbuf), "reason(%d)", r); 885 rs = rsbuf; 886 } 887 888 ret = snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs); 889 if (ret == -1) 890 return; /* can't happen, and can't do better if it does */ 891 if (ret >= len) { 892 /* output may be truncated; make sure we always have 5 893 * colon-separated fields, i.e. 4 colons ... */ 894#define NUM_COLONS 4 895 if (len > NUM_COLONS) /* ... if possible */ 896 { 897 int i; 898 char *s = buf; 899 900 for (i = 0; i < NUM_COLONS; i++) { 901 char *colon = strchr(s, ':'); 902 if (colon == NULL || 903 colon > &buf[len - 1] - NUM_COLONS + i) { 904 /* set colon no. i at last possible position 905 * (buf[len-1] is the terminating 0)*/ 906 colon = &buf[len - 1] - NUM_COLONS + i; 907 *colon = ':'; 908 } 909 s = colon + 1; 910 } 911 } 912 } 913} 914 915/* BAD for multi-threading: uses a local buffer if ret == NULL */ 916/* ERR_error_string_n should be used instead for ret != NULL 917 * as ERR_error_string cannot know how large the buffer is */ 918char * 919ERR_error_string(unsigned long e, char *ret) 920{ 921 static char buf[256]; 922 923 if (ret == NULL) 924 ret = buf; 925 ERR_error_string_n(e, ret, 256); 926 927 return ret; 928} 929 930LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void) 931{ 932 err_fns_check(); 933 return ERRFN(err_get)(0); 934} 935 936LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void) 937{ 938 err_fns_check(); 939 return ERRFN(thread_get)(0); 940} 941 942void 943ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash) 944{ 945 err_fns_check(); 946 ERRFN(thread_release)(hash); 947} 948 949const char * 950ERR_lib_error_string(unsigned long e) 951{ 952 ERR_STRING_DATA d, *p; 953 unsigned long l; 954 955 err_fns_check(); 956 l = ERR_GET_LIB(e); 957 d.error = ERR_PACK(l, 0, 0); 958 p = ERRFN(err_get_item)(&d); 959 return ((p == NULL) ? NULL : p->string); 960} 961 962const char * 963ERR_func_error_string(unsigned long e) 964{ 965 ERR_STRING_DATA d, *p; 966 unsigned long l, f; 967 968 err_fns_check(); 969 l = ERR_GET_LIB(e); 970 f = ERR_GET_FUNC(e); 971 d.error = ERR_PACK(l, f, 0); 972 p = ERRFN(err_get_item)(&d); 973 return ((p == NULL) ? NULL : p->string); 974} 975 976const char * 977ERR_reason_error_string(unsigned long e) 978{ 979 ERR_STRING_DATA d, *p = NULL; 980 unsigned long l, r; 981 982 err_fns_check(); 983 l = ERR_GET_LIB(e); 984 r = ERR_GET_REASON(e); 985 d.error = ERR_PACK(l, 0, r); 986 p = ERRFN(err_get_item)(&d); 987 if (!p) { 988 d.error = ERR_PACK(0, 0, r); 989 p = ERRFN(err_get_item)(&d); 990 } 991 return ((p == NULL) ? NULL : p->string); 992} 993 994void 995ERR_remove_thread_state(const CRYPTO_THREADID *id) 996{ 997 ERR_STATE tmp; 998 999 if (id) 1000 CRYPTO_THREADID_cpy(&tmp.tid, id); 1001 else 1002 CRYPTO_THREADID_current(&tmp.tid); 1003 err_fns_check(); 1004 /* thread_del_item automatically destroys the LHASH if the number of 1005 * items reaches zero. */ 1006 ERRFN(thread_del_item)(&tmp); 1007} 1008 1009#ifndef OPENSSL_NO_DEPRECATED 1010void 1011ERR_remove_state(unsigned long pid) 1012{ 1013 ERR_remove_thread_state(NULL); 1014} 1015#endif 1016 1017ERR_STATE * 1018ERR_get_state(void) 1019{ 1020 static ERR_STATE fallback; 1021 ERR_STATE *ret, tmp, *tmpp = NULL; 1022 int i; 1023 CRYPTO_THREADID tid; 1024 1025 err_fns_check(); 1026 CRYPTO_THREADID_current(&tid); 1027 CRYPTO_THREADID_cpy(&tmp.tid, &tid); 1028 ret = ERRFN(thread_get_item)(&tmp); 1029 1030 /* ret == the error state, if NULL, make a new one */ 1031 if (ret == NULL) { 1032 ret = malloc(sizeof(ERR_STATE)); 1033 if (ret == NULL) 1034 return (&fallback); 1035 CRYPTO_THREADID_cpy(&ret->tid, &tid); 1036 ret->top = 0; 1037 ret->bottom = 0; 1038 for (i = 0; i < ERR_NUM_ERRORS; i++) { 1039 ret->err_data[i] = NULL; 1040 ret->err_data_flags[i] = 0; 1041 } 1042 tmpp = ERRFN(thread_set_item)(ret); 1043 /* To check if insertion failed, do a get. */ 1044 if (ERRFN(thread_get_item)(ret) != ret) { 1045 ERR_STATE_free(ret); /* could not insert it */ 1046 return (&fallback); 1047 } 1048 /* If a race occured in this function and we came second, tmpp 1049 * is the first one that we just replaced. */ 1050 if (tmpp) 1051 ERR_STATE_free(tmpp); 1052 } 1053 return ret; 1054} 1055 1056int 1057ERR_get_next_error_library(void) 1058{ 1059 err_fns_check(); 1060 return ERRFN(get_next_lib)(); 1061} 1062 1063void 1064ERR_set_error_data(char *data, int flags) 1065{ 1066 ERR_STATE *es; 1067 int i; 1068 1069 es = ERR_get_state(); 1070 1071 i = es->top; 1072 if (i == 0) 1073 i = ERR_NUM_ERRORS - 1; 1074 1075 err_clear_data(es, i); 1076 es->err_data[i] = data; 1077 es->err_data_flags[i] = flags; 1078} 1079 1080void 1081ERR_asprintf_error_data(char * format, ...) { 1082 char *errbuf = NULL; 1083 va_list ap; 1084 int r; 1085 1086 va_start(ap, format); 1087 r = vasprintf(&errbuf, format, ap); 1088 va_end(ap); 1089 if (r == -1) 1090 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1091 else 1092 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1093} 1094void 1095ERR_add_error_data(int num, ...) 1096{ 1097 va_list args; 1098 va_start(args, num); 1099 ERR_add_error_vdata(num, args); 1100 va_end(args); 1101} 1102 1103void 1104ERR_add_error_vdata(int num, va_list args) 1105{ 1106 char format[129]; 1107 char *errbuf; 1108 format[0] = '\0'; 1109 int i; 1110 for (i = 0; i < num; i++) { 1111 if (strlcat(format, "%s", sizeof(format)) >= sizeof(format)) { 1112 ERR_set_error_data("too many errors", ERR_TXT_STRING); 1113 return; 1114 } 1115 } 1116 if (vasprintf(&errbuf, format, args) == -1) 1117 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1118 else 1119 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1120} 1121 1122int 1123ERR_set_mark(void) 1124{ 1125 ERR_STATE *es; 1126 1127 es = ERR_get_state(); 1128 1129 if (es->bottom == es->top) 1130 return 0; 1131 es->err_flags[es->top] |= ERR_FLAG_MARK; 1132 return 1; 1133} 1134 1135int 1136ERR_pop_to_mark(void) 1137{ 1138 ERR_STATE *es; 1139 1140 es = ERR_get_state(); 1141 1142 while (es->bottom != es->top && 1143 (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { 1144 err_clear(es, es->top); 1145 es->top -= 1; 1146 if (es->top == -1) 1147 es->top = ERR_NUM_ERRORS - 1; 1148 } 1149 1150 if (es->bottom == es->top) 1151 return 0; 1152 es->err_flags[es->top]&=~ERR_FLAG_MARK; 1153 return 1; 1154} 1155