err.c revision 325337
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), "ioctlsocket"}, 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 {ERR_PACK(0, SYS_F_FFLUSH, 0), "fflush"}, 176 {0, NULL}, 177}; 178 179static ERR_STRING_DATA ERR_str_reasons[] = { 180 {ERR_R_SYS_LIB, "system lib"}, 181 {ERR_R_BN_LIB, "BN lib"}, 182 {ERR_R_RSA_LIB, "RSA lib"}, 183 {ERR_R_DH_LIB, "DH lib"}, 184 {ERR_R_EVP_LIB, "EVP lib"}, 185 {ERR_R_BUF_LIB, "BUF lib"}, 186 {ERR_R_OBJ_LIB, "OBJ lib"}, 187 {ERR_R_PEM_LIB, "PEM lib"}, 188 {ERR_R_DSA_LIB, "DSA lib"}, 189 {ERR_R_X509_LIB, "X509 lib"}, 190 {ERR_R_ASN1_LIB, "ASN1 lib"}, 191 {ERR_R_CONF_LIB, "CONF lib"}, 192 {ERR_R_CRYPTO_LIB, "CRYPTO lib"}, 193 {ERR_R_EC_LIB, "EC lib"}, 194 {ERR_R_SSL_LIB, "SSL lib"}, 195 {ERR_R_BIO_LIB, "BIO lib"}, 196 {ERR_R_PKCS7_LIB, "PKCS7 lib"}, 197 {ERR_R_X509V3_LIB, "X509V3 lib"}, 198 {ERR_R_PKCS12_LIB, "PKCS12 lib"}, 199 {ERR_R_RAND_LIB, "RAND lib"}, 200 {ERR_R_DSO_LIB, "DSO lib"}, 201 {ERR_R_ENGINE_LIB, "ENGINE lib"}, 202 {ERR_R_OCSP_LIB, "OCSP lib"}, 203 {ERR_R_TS_LIB, "TS lib"}, 204 205 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"}, 206 {ERR_R_BAD_ASN1_OBJECT_HEADER, "bad asn1 object header"}, 207 {ERR_R_BAD_GET_ASN1_OBJECT_CALL, "bad get asn1 object call"}, 208 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE, "expecting an asn1 sequence"}, 209 {ERR_R_ASN1_LENGTH_MISMATCH, "asn1 length mismatch"}, 210 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"}, 211 212 {ERR_R_FATAL, "fatal"}, 213 {ERR_R_MALLOC_FAILURE, "malloc failure"}, 214 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, 215 "called a function you should not call"}, 216 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"}, 217 {ERR_R_INTERNAL_ERROR, "internal error"}, 218 {ERR_R_DISABLED, "called a function that was disabled at compile-time"}, 219 220 {0, NULL}, 221}; 222#endif 223 224/* Define the predeclared (but externally opaque) "ERR_FNS" type */ 225struct st_ERR_FNS { 226 /* Works on the "error_hash" string table */ 227 LHASH_OF(ERR_STRING_DATA) *(*cb_err_get) (int create); 228 void (*cb_err_del) (void); 229 ERR_STRING_DATA *(*cb_err_get_item) (const ERR_STRING_DATA *); 230 ERR_STRING_DATA *(*cb_err_set_item) (ERR_STRING_DATA *); 231 ERR_STRING_DATA *(*cb_err_del_item) (ERR_STRING_DATA *); 232 /* Works on the "thread_hash" error-state table */ 233 LHASH_OF(ERR_STATE) *(*cb_thread_get) (int create); 234 void (*cb_thread_release) (LHASH_OF(ERR_STATE) **hash); 235 ERR_STATE *(*cb_thread_get_item) (const ERR_STATE *); 236 ERR_STATE *(*cb_thread_set_item) (ERR_STATE *); 237 void (*cb_thread_del_item) (const ERR_STATE *); 238 /* Returns the next available error "library" numbers */ 239 int (*cb_get_next_lib) (void); 240}; 241 242/* Predeclarations of the "err_defaults" functions */ 243static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create); 244static void int_err_del(void); 245static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 246static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 247static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 248static LHASH_OF(ERR_STATE) *int_thread_get(int create); 249static void int_thread_release(LHASH_OF(ERR_STATE) **hash); 250static ERR_STATE *int_thread_get_item(const ERR_STATE *); 251static ERR_STATE *int_thread_set_item(ERR_STATE *); 252static void int_thread_del_item(const ERR_STATE *); 253static int int_err_get_next_lib(void); 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/* 276 * The internal state used by "err_defaults" - as such, the setting, reading, 277 * creating, and deleting of this data should only be permitted via the 278 * "err_defaults" functions. This way, a linked module can completely defer 279 * all ERR state operation (together with requisite locking) to the 280 * implementations and state in the loading application. 281 */ 282static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; 283static LHASH_OF(ERR_STATE) *int_thread_hash = NULL; 284static int int_thread_hash_references = 0; 285static int int_err_library_number = ERR_LIB_USER; 286 287/* 288 * Internal function that checks whether "err_fns" is set and if not, sets it 289 * to the defaults. 290 */ 291static void err_fns_check(void) 292{ 293 if (err_fns) 294 return; 295 296 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 297 if (!err_fns) 298 err_fns = &err_defaults; 299 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 300} 301 302/* API functions to get or set the underlying ERR functions. */ 303 304const ERR_FNS *ERR_get_implementation(void) 305{ 306 err_fns_check(); 307 return err_fns; 308} 309 310int ERR_set_implementation(const ERR_FNS *fns) 311{ 312 int ret = 0; 313 314 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 315 /* 316 * It's too late if 'err_fns' is non-NULL. BTW: not much point setting an 317 * error is there?! 318 */ 319 if (!err_fns) { 320 err_fns = fns; 321 ret = 1; 322 } 323 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 324 return ret; 325} 326 327/* 328 * These are the callbacks provided to "lh_new()" when creating the LHASH 329 * tables internal to the "err_defaults" implementation. 330 */ 331 332static unsigned long get_error_values(int inc, int top, const char **file, 333 int *line, const char **data, 334 int *flags); 335 336/* The internal functions used in the "err_defaults" implementation */ 337 338static unsigned long err_string_data_hash(const ERR_STRING_DATA *a) 339{ 340 unsigned long ret, l; 341 342 l = a->error; 343 ret = l ^ ERR_GET_LIB(l) ^ ERR_GET_FUNC(l); 344 return (ret ^ ret % 19 * 13); 345} 346 347static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA) 348 349static int err_string_data_cmp(const ERR_STRING_DATA *a, 350 const ERR_STRING_DATA *b) 351{ 352 return (int)(a->error - b->error); 353} 354 355static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA) 356 357static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create) 358{ 359 LHASH_OF(ERR_STRING_DATA) *ret = NULL; 360 361 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 362 if (!int_error_hash && create) { 363 CRYPTO_push_info("int_err_get (err.c)"); 364 int_error_hash = lh_ERR_STRING_DATA_new(); 365 CRYPTO_pop_info(); 366 } 367 if (int_error_hash) 368 ret = int_error_hash; 369 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 370 371 return ret; 372} 373 374static void int_err_del(void) 375{ 376 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 377 if (int_error_hash) { 378 lh_ERR_STRING_DATA_free(int_error_hash); 379 int_error_hash = NULL; 380 } 381 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 382} 383 384static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) 385{ 386 ERR_STRING_DATA *p; 387 LHASH_OF(ERR_STRING_DATA) *hash; 388 389 err_fns_check(); 390 hash = ERRFN(err_get) (0); 391 if (!hash) 392 return NULL; 393 394 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 395 p = lh_ERR_STRING_DATA_retrieve(hash, d); 396 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 397 398 return p; 399} 400 401static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) 402{ 403 ERR_STRING_DATA *p; 404 LHASH_OF(ERR_STRING_DATA) *hash; 405 406 err_fns_check(); 407 hash = ERRFN(err_get) (1); 408 if (!hash) 409 return NULL; 410 411 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 412 p = lh_ERR_STRING_DATA_insert(hash, d); 413 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 414 415 return p; 416} 417 418static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) 419{ 420 ERR_STRING_DATA *p; 421 LHASH_OF(ERR_STRING_DATA) *hash; 422 423 err_fns_check(); 424 hash = ERRFN(err_get) (0); 425 if (!hash) 426 return NULL; 427 428 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 429 p = lh_ERR_STRING_DATA_delete(hash, d); 430 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 431 432 return p; 433} 434 435static unsigned long err_state_hash(const ERR_STATE *a) 436{ 437 return CRYPTO_THREADID_hash(&a->tid) * 13; 438} 439 440static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) 441 442static int err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) 443{ 444 return CRYPTO_THREADID_cmp(&a->tid, &b->tid); 445} 446 447static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) 448 449static LHASH_OF(ERR_STATE) *int_thread_get(int create) 450{ 451 LHASH_OF(ERR_STATE) *ret = NULL; 452 453 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 454 if (!int_thread_hash && create) { 455 CRYPTO_push_info("int_thread_get (err.c)"); 456 int_thread_hash = lh_ERR_STATE_new(); 457 CRYPTO_pop_info(); 458 } 459 if (int_thread_hash) { 460 int_thread_hash_references++; 461 ret = int_thread_hash; 462 } 463 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 464 return ret; 465} 466 467static void int_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); 475 476#ifdef REF_PRINT 477 fprintf(stderr, "%4d:%s\n", int_thread_hash_references, "ERR"); 478#endif 479 if (i > 0) 480 return; 481#ifdef REF_CHECK 482 if (i < 0) { 483 fprintf(stderr, "int_thread_release, bad reference count\n"); 484 abort(); /* ok */ 485 } 486#endif 487 *hash = NULL; 488} 489 490static ERR_STATE *int_thread_get_item(const ERR_STATE *d) 491{ 492 ERR_STATE *p; 493 LHASH_OF(ERR_STATE) *hash; 494 495 err_fns_check(); 496 hash = ERRFN(thread_get) (0); 497 if (!hash) 498 return NULL; 499 500 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 501 p = lh_ERR_STATE_retrieve(hash, d); 502 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 503 504 ERRFN(thread_release) (&hash); 505 return p; 506} 507 508static ERR_STATE *int_thread_set_item(ERR_STATE *d) 509{ 510 ERR_STATE *p; 511 LHASH_OF(ERR_STATE) *hash; 512 513 err_fns_check(); 514 hash = ERRFN(thread_get) (1); 515 if (!hash) 516 return NULL; 517 518 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 519 p = lh_ERR_STATE_insert(hash, d); 520 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 521 522 ERRFN(thread_release) (&hash); 523 return p; 524} 525 526static void int_thread_del_item(const ERR_STATE *d) 527{ 528 ERR_STATE *p; 529 LHASH_OF(ERR_STATE) *hash; 530 531 err_fns_check(); 532 hash = ERRFN(thread_get) (0); 533 if (!hash) 534 return; 535 536 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 537 p = lh_ERR_STATE_delete(hash, d); 538 /* make sure we don't leak memory */ 539 if (int_thread_hash_references == 1 540 && int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) { 541 lh_ERR_STATE_free(int_thread_hash); 542 int_thread_hash = NULL; 543 } 544 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 545 546 ERRFN(thread_release) (&hash); 547 if (p) 548 ERR_STATE_free(p); 549} 550 551static int int_err_get_next_lib(void) 552{ 553 int ret; 554 555 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 556 ret = int_err_library_number++; 557 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 558 559 return ret; 560} 561 562#ifndef OPENSSL_NO_ERR 563# define NUM_SYS_STR_REASONS 127 564# define LEN_SYS_STR_REASON 32 565 566static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 567/* 568 * SYS_str_reasons is filled with copies of strerror() results at 569 * initialization. 'errno' values up to 127 should cover all usual errors, 570 * others will be displayed numerically by ERR_error_string. It is crucial 571 * that we have something for each reason code that occurs in 572 * ERR_str_reasons, or bogus reason strings will be returned for SYSerr(), 573 * which always gets an errno value and never one of those 'standard' reason 574 * codes. 575 */ 576 577static void build_SYS_str_reasons(void) 578{ 579 /* OPENSSL_malloc cannot be used here, use static storage instead */ 580 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 581 int i; 582 static int init = 1; 583 584 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 585 if (!init) { 586 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 587 return; 588 } 589 590 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 591 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 592 if (!init) { 593 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 594 return; 595 } 596 597 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { 598 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 599 600 str->error = (unsigned long)i; 601 if (str->string == NULL) { 602 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 603 char *src = strerror(i); 604 if (src != NULL) { 605 strncpy(*dest, src, sizeof *dest); 606 (*dest)[sizeof *dest - 1] = '\0'; 607 str->string = *dest; 608 } 609 } 610 if (str->string == NULL) 611 str->string = "unknown"; 612 } 613 614 /* 615 * Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as 616 * required by ERR_load_strings. 617 */ 618 619 init = 0; 620 621 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 622} 623#endif 624 625#define err_clear_data(p,i) \ 626 do { \ 627 if (((p)->err_data[i] != NULL) && \ 628 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 629 { \ 630 OPENSSL_free((p)->err_data[i]); \ 631 (p)->err_data[i]=NULL; \ 632 } \ 633 (p)->err_data_flags[i]=0; \ 634 } while(0) 635 636#define err_clear(p,i) \ 637 do { \ 638 (p)->err_flags[i]=0; \ 639 (p)->err_buffer[i]=0; \ 640 err_clear_data(p,i); \ 641 (p)->err_file[i]=NULL; \ 642 (p)->err_line[i]= -1; \ 643 } while(0) 644 645static void ERR_STATE_free(ERR_STATE *s) 646{ 647 int i; 648 649 if (s == NULL) 650 return; 651 652 for (i = 0; i < ERR_NUM_ERRORS; i++) { 653 err_clear_data(s, i); 654 } 655 OPENSSL_free(s); 656} 657 658void ERR_load_ERR_strings(void) 659{ 660 err_fns_check(); 661#ifndef OPENSSL_NO_ERR 662 err_load_strings(0, ERR_str_libraries); 663 err_load_strings(0, ERR_str_reasons); 664 err_load_strings(ERR_LIB_SYS, ERR_str_functs); 665 build_SYS_str_reasons(); 666 err_load_strings(ERR_LIB_SYS, SYS_str_reasons); 667#endif 668} 669 670static void err_load_strings(int lib, ERR_STRING_DATA *str) 671{ 672 while (str->error) { 673 if (lib) 674 str->error |= ERR_PACK(lib, 0, 0); 675 ERRFN(err_set_item) (str); 676 str++; 677 } 678} 679 680void ERR_load_strings(int lib, ERR_STRING_DATA *str) 681{ 682 ERR_load_ERR_strings(); 683 err_load_strings(lib, str); 684} 685 686void ERR_unload_strings(int lib, ERR_STRING_DATA *str) 687{ 688 while (str->error) { 689 if (lib) 690 str->error |= ERR_PACK(lib, 0, 0); 691 ERRFN(err_del_item) (str); 692 str++; 693 } 694} 695 696void ERR_free_strings(void) 697{ 698 err_fns_check(); 699 ERRFN(err_del) (); 700} 701 702/********************************************************/ 703 704void ERR_put_error(int lib, int func, int reason, const char *file, int line) 705{ 706 ERR_STATE *es; 707 708#ifdef _OSD_POSIX 709 /* 710 * In the BS2000-OSD POSIX subsystem, the compiler generates path names 711 * in the form "*POSIX(/etc/passwd)". This dirty hack strips them to 712 * something sensible. @@@ We shouldn't modify a const string, though. 713 */ 714 if (strncmp(file, "*POSIX(", sizeof("*POSIX(") - 1) == 0) { 715 char *end; 716 717 /* Skip the "*POSIX(" prefix */ 718 file += sizeof("*POSIX(") - 1; 719 end = &file[strlen(file) - 1]; 720 if (*end == ')') 721 *end = '\0'; 722 /* Optional: use the basename of the path only. */ 723 if ((end = strrchr(file, '/')) != NULL) 724 file = &end[1]; 725 } 726#endif 727 es = ERR_get_state(); 728 if (es == NULL) 729 return; 730 731 es->top = (es->top + 1) % ERR_NUM_ERRORS; 732 if (es->top == es->bottom) 733 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; 734 es->err_flags[es->top] = 0; 735 es->err_buffer[es->top] = ERR_PACK(lib, func, reason); 736 es->err_file[es->top] = file; 737 es->err_line[es->top] = line; 738 err_clear_data(es, es->top); 739} 740 741void ERR_clear_error(void) 742{ 743 int i; 744 ERR_STATE *es; 745 746 es = ERR_get_state(); 747 if (es == NULL) 748 return; 749 750 for (i = 0; i < ERR_NUM_ERRORS; i++) { 751 err_clear(es, i); 752 } 753 es->top = es->bottom = 0; 754} 755 756unsigned long ERR_get_error(void) 757{ 758 return (get_error_values(1, 0, NULL, NULL, NULL, NULL)); 759} 760 761unsigned long ERR_get_error_line(const char **file, int *line) 762{ 763 return (get_error_values(1, 0, file, line, NULL, NULL)); 764} 765 766unsigned long ERR_get_error_line_data(const char **file, int *line, 767 const char **data, int *flags) 768{ 769 return (get_error_values(1, 0, file, line, data, flags)); 770} 771 772unsigned long ERR_peek_error(void) 773{ 774 return (get_error_values(0, 0, NULL, NULL, NULL, NULL)); 775} 776 777unsigned long ERR_peek_error_line(const char **file, int *line) 778{ 779 return (get_error_values(0, 0, file, line, NULL, NULL)); 780} 781 782unsigned long ERR_peek_error_line_data(const char **file, int *line, 783 const char **data, int *flags) 784{ 785 return (get_error_values(0, 0, file, line, data, flags)); 786} 787 788unsigned long ERR_peek_last_error(void) 789{ 790 return (get_error_values(0, 1, NULL, NULL, NULL, NULL)); 791} 792 793unsigned long ERR_peek_last_error_line(const char **file, int *line) 794{ 795 return (get_error_values(0, 1, file, line, NULL, NULL)); 796} 797 798unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 799 const char **data, int *flags) 800{ 801 return (get_error_values(0, 1, file, line, data, flags)); 802} 803 804static unsigned long get_error_values(int inc, int top, const char **file, 805 int *line, const char **data, 806 int *flags) 807{ 808 int i = 0; 809 ERR_STATE *es; 810 unsigned long ret; 811 812 es = ERR_get_state(); 813 if (es == NULL) 814 return 0; 815 816 if (inc && top) { 817 if (file) 818 *file = ""; 819 if (line) 820 *line = 0; 821 if (data) 822 *data = ""; 823 if (flags) 824 *flags = 0; 825 826 return ERR_R_INTERNAL_ERROR; 827 } 828 829 if (es->bottom == es->top) 830 return 0; 831 if (top) 832 i = es->top; /* last error */ 833 else 834 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */ 835 836 ret = es->err_buffer[i]; 837 if (inc) { 838 es->bottom = i; 839 es->err_buffer[i] = 0; 840 } 841 842 if ((file != NULL) && (line != NULL)) { 843 if (es->err_file[i] == NULL) { 844 *file = "NA"; 845 if (line != NULL) 846 *line = 0; 847 } else { 848 *file = es->err_file[i]; 849 if (line != NULL) 850 *line = es->err_line[i]; 851 } 852 } 853 854 if (data == NULL) { 855 if (inc) { 856 err_clear_data(es, i); 857 } 858 } else { 859 if (es->err_data[i] == NULL) { 860 *data = ""; 861 if (flags != NULL) 862 *flags = 0; 863 } else { 864 *data = es->err_data[i]; 865 if (flags != NULL) 866 *flags = es->err_data_flags[i]; 867 } 868 } 869 return ret; 870} 871 872void ERR_error_string_n(unsigned long e, char *buf, size_t len) 873{ 874 char lsbuf[64], fsbuf[64], rsbuf[64]; 875 const char *ls, *fs, *rs; 876 unsigned long l, f, r; 877 878 if (len == 0) 879 return; 880 881 l = ERR_GET_LIB(e); 882 f = ERR_GET_FUNC(e); 883 r = ERR_GET_REASON(e); 884 885 ls = ERR_lib_error_string(e); 886 fs = ERR_func_error_string(e); 887 rs = ERR_reason_error_string(e); 888 889 if (ls == NULL) 890 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); 891 if (fs == NULL) 892 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); 893 if (rs == NULL) 894 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); 895 896 BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls ? ls : lsbuf, 897 fs ? fs : fsbuf, rs ? rs : rsbuf); 898 if (strlen(buf) == len - 1) { 899 /* 900 * output may be truncated; make sure we always have 5 901 * colon-separated fields, i.e. 4 colons ... 902 */ 903#define NUM_COLONS 4 904 if (len > NUM_COLONS) { /* ... if possible */ 905 int i; 906 char *s = buf; 907 908 for (i = 0; i < NUM_COLONS; i++) { 909 char *colon = strchr(s, ':'); 910 if (colon == NULL || colon > &buf[len - 1] - NUM_COLONS + i) { 911 /* 912 * set colon no. i at last possible position (buf[len-1] 913 * is the terminating 0) 914 */ 915 colon = &buf[len - 1] - NUM_COLONS + i; 916 *colon = ':'; 917 } 918 s = colon + 1; 919 } 920 } 921 } 922} 923 924/* BAD for multi-threading: uses a local buffer if ret == NULL */ 925/* 926 * ERR_error_string_n should be used instead for ret != NULL as 927 * ERR_error_string cannot know how large the buffer is 928 */ 929char *ERR_error_string(unsigned long e, char *ret) 930{ 931 static char buf[256]; 932 933 if (ret == NULL) 934 ret = buf; 935 ERR_error_string_n(e, ret, 256); 936 937 return ret; 938} 939 940LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void) 941{ 942 err_fns_check(); 943 return ERRFN(err_get) (0); 944} 945 946LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void) 947{ 948 err_fns_check(); 949 return ERRFN(thread_get) (0); 950} 951 952void ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash) 953{ 954 err_fns_check(); 955 ERRFN(thread_release) (hash); 956} 957 958const char *ERR_lib_error_string(unsigned long e) 959{ 960 ERR_STRING_DATA d, *p; 961 unsigned long l; 962 963 err_fns_check(); 964 l = ERR_GET_LIB(e); 965 d.error = ERR_PACK(l, 0, 0); 966 p = ERRFN(err_get_item) (&d); 967 return ((p == NULL) ? NULL : p->string); 968} 969 970const char *ERR_func_error_string(unsigned long e) 971{ 972 ERR_STRING_DATA d, *p; 973 unsigned long l, f; 974 975 err_fns_check(); 976 l = ERR_GET_LIB(e); 977 f = ERR_GET_FUNC(e); 978 d.error = ERR_PACK(l, f, 0); 979 p = ERRFN(err_get_item) (&d); 980 return ((p == NULL) ? NULL : p->string); 981} 982 983const char *ERR_reason_error_string(unsigned long e) 984{ 985 ERR_STRING_DATA d, *p = NULL; 986 unsigned long l, r; 987 988 err_fns_check(); 989 l = ERR_GET_LIB(e); 990 r = ERR_GET_REASON(e); 991 d.error = ERR_PACK(l, 0, r); 992 p = ERRFN(err_get_item) (&d); 993 if (!p) { 994 d.error = ERR_PACK(0, 0, r); 995 p = ERRFN(err_get_item) (&d); 996 } 997 return ((p == NULL) ? NULL : p->string); 998} 999 1000void ERR_remove_thread_state(const CRYPTO_THREADID *id) 1001{ 1002 ERR_STATE tmp; 1003 1004 if (id) 1005 CRYPTO_THREADID_cpy(&tmp.tid, id); 1006 else 1007 CRYPTO_THREADID_current(&tmp.tid); 1008 err_fns_check(); 1009 /* 1010 * thread_del_item automatically destroys the LHASH if the number of 1011 * items reaches zero. 1012 */ 1013 ERRFN(thread_del_item) (&tmp); 1014} 1015 1016#ifndef OPENSSL_NO_DEPRECATED 1017void ERR_remove_state(unsigned long pid) 1018{ 1019 ERR_remove_thread_state(NULL); 1020} 1021#endif 1022 1023ERR_STATE *ERR_get_state(void) 1024{ 1025 ERR_STATE *ret, tmp, *tmpp = NULL; 1026 int i; 1027 CRYPTO_THREADID tid; 1028 1029 err_fns_check(); 1030 CRYPTO_THREADID_current(&tid); 1031 CRYPTO_THREADID_cpy(&tmp.tid, &tid); 1032 ret = ERRFN(thread_get_item) (&tmp); 1033 1034 /* ret == the error state, if NULL, make a new one */ 1035 if (ret == NULL) { 1036 ret = (ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); 1037 if (ret == NULL) 1038 return NULL; 1039 CRYPTO_THREADID_cpy(&ret->tid, &tid); 1040 ret->top = 0; 1041 ret->bottom = 0; 1042 for (i = 0; i < ERR_NUM_ERRORS; i++) { 1043 ret->err_data[i] = NULL; 1044 ret->err_data_flags[i] = 0; 1045 } 1046 tmpp = ERRFN(thread_set_item) (ret); 1047 /* To check if insertion failed, do a get. */ 1048 if (ERRFN(thread_get_item) (ret) != ret) { 1049 ERR_STATE_free(ret); /* could not insert it */ 1050 return NULL; 1051 } 1052 /* 1053 * If a race occured in this function and we came second, tmpp is the 1054 * first one that we just replaced. 1055 */ 1056 if (tmpp) 1057 ERR_STATE_free(tmpp); 1058 } 1059 return ret; 1060} 1061 1062int ERR_get_next_error_library(void) 1063{ 1064 err_fns_check(); 1065 return ERRFN(get_next_lib) (); 1066} 1067 1068void ERR_set_error_data(char *data, int flags) 1069{ 1070 ERR_STATE *es; 1071 int i; 1072 1073 es = ERR_get_state(); 1074 if (es == NULL) 1075 return; 1076 1077 i = es->top; 1078 1079 err_clear_data(es, i); 1080 es->err_data[i] = data; 1081 es->err_data_flags[i] = flags; 1082} 1083 1084void ERR_add_error_data(int num, ...) 1085{ 1086 va_list args; 1087 va_start(args, num); 1088 ERR_add_error_vdata(num, args); 1089 va_end(args); 1090} 1091 1092void ERR_add_error_vdata(int num, va_list args) 1093{ 1094 int i, n, s; 1095 char *str, *p, *a; 1096 1097 s = 80; 1098 str = OPENSSL_malloc(s + 1); 1099 if (str == NULL) 1100 return; 1101 str[0] = '\0'; 1102 1103 n = 0; 1104 for (i = 0; i < num; i++) { 1105 a = va_arg(args, char *); 1106 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 1107 if (a != NULL) { 1108 n += strlen(a); 1109 if (n > s) { 1110 s = n + 20; 1111 p = OPENSSL_realloc(str, s + 1); 1112 if (p == NULL) { 1113 OPENSSL_free(str); 1114 return; 1115 } else 1116 str = p; 1117 } 1118 BUF_strlcat(str, a, (size_t)s + 1); 1119 } 1120 } 1121 ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING); 1122} 1123 1124int ERR_set_mark(void) 1125{ 1126 ERR_STATE *es; 1127 1128 es = ERR_get_state(); 1129 if (es == NULL) 1130 return 0; 1131 1132 if (es->bottom == es->top) 1133 return 0; 1134 es->err_flags[es->top] |= ERR_FLAG_MARK; 1135 return 1; 1136} 1137 1138int ERR_pop_to_mark(void) 1139{ 1140 ERR_STATE *es; 1141 1142 es = ERR_get_state(); 1143 if (es == NULL) 1144 return 0; 1145 1146 while (es->bottom != es->top 1147 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { 1148 err_clear(es, es->top); 1149 es->top -= 1; 1150 if (es->top == -1) 1151 es->top = ERR_NUM_ERRORS - 1; 1152 } 1153 1154 if (es->bottom == es->top) 1155 return 0; 1156 es->err_flags[es->top] &= ~ERR_FLAG_MARK; 1157 return 1; 1158} 1159