1/* $OpenBSD: err.c,v 1.60 2024/03/02 11:37:13 tb 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 <pthread.h> 113#include <stdarg.h> 114#include <stdio.h> 115#include <string.h> 116 117#include <openssl/opensslconf.h> 118 119#include <openssl/bio.h> 120#include <openssl/buffer.h> 121#include <openssl/crypto.h> 122#include <openssl/err.h> 123#include <openssl/lhash.h> 124 125#include "crypto_local.h" 126 127DECLARE_LHASH_OF(ERR_STRING_DATA); 128DECLARE_LHASH_OF(ERR_STATE); 129 130typedef struct st_ERR_FNS ERR_FNS; 131 132typedef struct err_state_st { 133 CRYPTO_THREADID tid; 134 int err_flags[ERR_NUM_ERRORS]; 135 unsigned long err_buffer[ERR_NUM_ERRORS]; 136 char *err_data[ERR_NUM_ERRORS]; 137 int err_data_flags[ERR_NUM_ERRORS]; 138 const char *err_file[ERR_NUM_ERRORS]; 139 int err_line[ERR_NUM_ERRORS]; 140 int top, bottom; 141} ERR_STATE; 142 143static void err_load_strings(int lib, ERR_STRING_DATA *str); 144 145static ERR_STATE *ERR_get_state(void); 146static void ERR_STATE_free(ERR_STATE *s); 147 148#ifndef OPENSSL_NO_ERR 149static ERR_STRING_DATA ERR_str_libraries[] = { 150 {ERR_PACK(ERR_LIB_NONE,0,0), "unknown library"}, 151 {ERR_PACK(ERR_LIB_SYS,0,0), "system library"}, 152 {ERR_PACK(ERR_LIB_BN,0,0), "bignum routines"}, 153 {ERR_PACK(ERR_LIB_RSA,0,0), "rsa routines"}, 154 {ERR_PACK(ERR_LIB_DH,0,0), "Diffie-Hellman routines"}, 155 {ERR_PACK(ERR_LIB_EVP,0,0), "digital envelope routines"}, 156 {ERR_PACK(ERR_LIB_BUF,0,0), "memory buffer routines"}, 157 {ERR_PACK(ERR_LIB_OBJ,0,0), "object identifier routines"}, 158 {ERR_PACK(ERR_LIB_PEM,0,0), "PEM routines"}, 159 {ERR_PACK(ERR_LIB_DSA,0,0), "dsa routines"}, 160 {ERR_PACK(ERR_LIB_X509,0,0), "x509 certificate routines"}, 161 {ERR_PACK(ERR_LIB_ASN1,0,0), "asn1 encoding routines"}, 162 {ERR_PACK(ERR_LIB_CONF,0,0), "configuration file routines"}, 163 {ERR_PACK(ERR_LIB_CRYPTO,0,0), "common libcrypto routines"}, 164 {ERR_PACK(ERR_LIB_EC,0,0), "elliptic curve routines"}, 165 {ERR_PACK(ERR_LIB_SSL,0,0), "SSL routines"}, 166 {ERR_PACK(ERR_LIB_BIO,0,0), "BIO routines"}, 167 {ERR_PACK(ERR_LIB_PKCS7,0,0), "PKCS7 routines"}, 168 {ERR_PACK(ERR_LIB_X509V3,0,0), "X509 V3 routines"}, 169 {ERR_PACK(ERR_LIB_PKCS12,0,0), "PKCS12 routines"}, 170 {ERR_PACK(ERR_LIB_RAND,0,0), "random number generator"}, 171 {ERR_PACK(ERR_LIB_DSO,0,0), "DSO support routines"}, 172 {ERR_PACK(ERR_LIB_TS,0,0), "time stamp routines"}, 173 {ERR_PACK(ERR_LIB_ENGINE,0,0), "engine routines"}, 174 {ERR_PACK(ERR_LIB_OCSP,0,0), "OCSP routines"}, 175 {ERR_PACK(ERR_LIB_FIPS,0,0), "FIPS routines"}, 176 {ERR_PACK(ERR_LIB_CMS,0,0), "CMS routines"}, 177 {ERR_PACK(ERR_LIB_HMAC,0,0), "HMAC routines"}, 178 {ERR_PACK(ERR_LIB_GOST,0,0), "GOST routines"}, 179 {0, NULL}, 180}; 181 182static ERR_STRING_DATA ERR_str_functs[] = { 183 {ERR_PACK(0,SYS_F_FOPEN, 0), "fopen"}, 184 {ERR_PACK(0,SYS_F_CONNECT, 0), "connect"}, 185 {ERR_PACK(0,SYS_F_GETSERVBYNAME, 0), "getservbyname"}, 186 {ERR_PACK(0,SYS_F_SOCKET, 0), "socket"}, 187 {ERR_PACK(0,SYS_F_IOCTLSOCKET, 0), "ioctl"}, 188 {ERR_PACK(0,SYS_F_BIND, 0), "bind"}, 189 {ERR_PACK(0,SYS_F_LISTEN, 0), "listen"}, 190 {ERR_PACK(0,SYS_F_ACCEPT, 0), "accept"}, 191 {ERR_PACK(0,SYS_F_OPENDIR, 0), "opendir"}, 192 {ERR_PACK(0,SYS_F_FREAD, 0), "fread"}, 193 {0, NULL}, 194}; 195 196static ERR_STRING_DATA ERR_str_reasons[] = { 197 {ERR_R_SYS_LIB, "system lib"}, 198 {ERR_R_BN_LIB, "BN lib"}, 199 {ERR_R_RSA_LIB, "RSA lib"}, 200 {ERR_R_DH_LIB, "DH lib"}, 201 {ERR_R_EVP_LIB, "EVP lib"}, 202 {ERR_R_BUF_LIB, "BUF lib"}, 203 {ERR_R_OBJ_LIB, "OBJ lib"}, 204 {ERR_R_PEM_LIB, "PEM lib"}, 205 {ERR_R_DSA_LIB, "DSA lib"}, 206 {ERR_R_X509_LIB, "X509 lib"}, 207 {ERR_R_ASN1_LIB, "ASN1 lib"}, 208 {ERR_R_CONF_LIB, "CONF lib"}, 209 {ERR_R_CRYPTO_LIB, "CRYPTO lib"}, 210 {ERR_R_EC_LIB, "EC lib"}, 211 {ERR_R_SSL_LIB, "SSL lib"}, 212 {ERR_R_BIO_LIB, "BIO lib"}, 213 {ERR_R_PKCS7_LIB, "PKCS7 lib"}, 214 {ERR_R_X509V3_LIB, "X509V3 lib"}, 215 {ERR_R_PKCS12_LIB, "PKCS12 lib"}, 216 {ERR_R_RAND_LIB, "RAND lib"}, 217 {ERR_R_DSO_LIB, "DSO lib"}, 218 {ERR_R_ENGINE_LIB, "ENGINE lib"}, 219 {ERR_R_OCSP_LIB, "OCSP lib"}, 220 {ERR_R_TS_LIB, "TS lib"}, 221 222 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"}, 223 {ERR_R_BAD_ASN1_OBJECT_HEADER, "bad asn1 object header"}, 224 {ERR_R_BAD_GET_ASN1_OBJECT_CALL, "bad get asn1 object call"}, 225 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE, "expecting an asn1 sequence"}, 226 {ERR_R_ASN1_LENGTH_MISMATCH, "asn1 length mismatch"}, 227 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"}, 228 229 {ERR_R_FATAL, "fatal"}, 230 {ERR_R_MALLOC_FAILURE, "malloc failure"}, 231 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, "called a function you should not call"}, 232 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"}, 233 {ERR_R_INTERNAL_ERROR, "internal error"}, 234 {ERR_R_DISABLED , "called a function that was disabled at compile-time"}, 235 {ERR_R_INIT_FAIL, "initialization failure"}, 236 237 {0, NULL}, 238}; 239#endif 240 241 242/* Define the predeclared (but externally opaque) "ERR_FNS" type */ 243struct st_ERR_FNS { 244 /* Works on the "error_hash" string table */ 245 LHASH_OF(ERR_STRING_DATA) *(*cb_err_get)(int create); 246 void (*cb_err_del)(void); 247 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 248 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 249 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 250 /* Works on the "thread_hash" error-state table */ 251 LHASH_OF(ERR_STATE) *(*cb_thread_get)(int create); 252 void (*cb_thread_release)(LHASH_OF(ERR_STATE) **hash); 253 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 254 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 255 void (*cb_thread_del_item)(const ERR_STATE *); 256 /* Returns the next available error "library" numbers */ 257 int (*cb_get_next_lib)(void); 258}; 259 260/* Predeclarations of the "err_defaults" functions */ 261static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create); 262static void int_err_del(void); 263static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 264static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 265static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 266static LHASH_OF(ERR_STATE) *int_thread_get(int create); 267static void int_thread_release(LHASH_OF(ERR_STATE) **hash); 268static ERR_STATE *int_thread_get_item(const ERR_STATE *); 269static ERR_STATE *int_thread_set_item(ERR_STATE *); 270static void int_thread_del_item(const ERR_STATE *); 271static int int_err_get_next_lib(void); 272 273/* The static ERR_FNS table using these defaults functions */ 274static const ERR_FNS err_defaults = { 275 int_err_get, 276 int_err_del, 277 int_err_get_item, 278 int_err_set_item, 279 int_err_del_item, 280 int_thread_get, 281 int_thread_release, 282 int_thread_get_item, 283 int_thread_set_item, 284 int_thread_del_item, 285 int_err_get_next_lib 286}; 287 288/* The replacable table of ERR_FNS functions we use at run-time */ 289static const ERR_FNS *err_fns = NULL; 290 291/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 292#define ERRFN(a) err_fns->cb_##a 293 294/* The internal state used by "err_defaults" - as such, the setting, reading, 295 * creating, and deleting of this data should only be permitted via the 296 * "err_defaults" functions. This way, a linked module can completely defer all 297 * ERR state operation (together with requisite locking) to the implementations 298 * and state in the loading application. */ 299static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; 300static LHASH_OF(ERR_STATE) *int_thread_hash = NULL; 301static int int_thread_hash_references = 0; 302static int int_err_library_number = ERR_LIB_USER; 303 304static pthread_t err_init_thread; 305 306/* Internal function that checks whether "err_fns" is set and if not, sets it to 307 * the defaults. */ 308static void 309err_fns_check(void) 310{ 311 if (err_fns) 312 return; 313 314 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 315 if (!err_fns) 316 err_fns = &err_defaults; 317 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 318} 319 320/* These are the callbacks provided to "lh_new()" when creating the LHASH tables 321 * internal to the "err_defaults" implementation. */ 322 323static unsigned long get_error_values(int inc, int top, const char **file, 324 int *line, const char **data, int *flags); 325 326/* The internal functions used in the "err_defaults" implementation */ 327 328static unsigned long 329err_string_data_hash(const ERR_STRING_DATA *a) 330{ 331 unsigned long ret, l; 332 333 l = a->error; 334 ret = l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 335 return (ret^ret % 19*13); 336} 337static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA) 338 339static int 340err_string_data_cmp(const ERR_STRING_DATA *a, const ERR_STRING_DATA *b) 341{ 342 return (int)(a->error - b->error); 343} 344static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA) 345 346static LHASH_OF(ERR_STRING_DATA) * 347int_err_get(int create) 348{ 349 LHASH_OF(ERR_STRING_DATA) *ret = NULL; 350 351 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 352 if (!int_error_hash && create) 353 int_error_hash = lh_ERR_STRING_DATA_new(); 354 if (int_error_hash) 355 ret = int_error_hash; 356 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 357 358 return ret; 359} 360 361static void 362int_err_del(void) 363{ 364 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 365 if (int_error_hash) { 366 lh_ERR_STRING_DATA_free(int_error_hash); 367 int_error_hash = NULL; 368 } 369 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 370} 371 372static ERR_STRING_DATA * 373int_err_get_item(const ERR_STRING_DATA *d) 374{ 375 ERR_STRING_DATA *p; 376 LHASH_OF(ERR_STRING_DATA) *hash; 377 378 err_fns_check(); 379 hash = ERRFN(err_get)(0); 380 if (!hash) 381 return NULL; 382 383 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 384 p = lh_ERR_STRING_DATA_retrieve(hash, d); 385 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 386 387 return p; 388} 389 390static ERR_STRING_DATA * 391int_err_set_item(ERR_STRING_DATA *d) 392{ 393 ERR_STRING_DATA *p; 394 LHASH_OF(ERR_STRING_DATA) *hash; 395 396 err_fns_check(); 397 hash = ERRFN(err_get)(1); 398 if (!hash) 399 return NULL; 400 401 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 402 p = lh_ERR_STRING_DATA_insert(hash, d); 403 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 404 405 return p; 406} 407 408static ERR_STRING_DATA * 409int_err_del_item(ERR_STRING_DATA *d) 410{ 411 ERR_STRING_DATA *p; 412 LHASH_OF(ERR_STRING_DATA) *hash; 413 414 err_fns_check(); 415 hash = ERRFN(err_get)(0); 416 if (!hash) 417 return NULL; 418 419 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 420 p = lh_ERR_STRING_DATA_delete(hash, d); 421 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 422 423 return p; 424} 425 426static unsigned long 427err_state_hash(const ERR_STATE *a) 428{ 429 return CRYPTO_THREADID_hash(&a->tid) * 13; 430} 431static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) 432 433static int 434err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) 435{ 436 return CRYPTO_THREADID_cmp(&a->tid, &b->tid); 437} 438static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) 439 440static LHASH_OF(ERR_STATE) * 441int_thread_get(int create) 442{ 443 LHASH_OF(ERR_STATE) *ret = NULL; 444 445 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 446 if (!int_thread_hash && create) 447 int_thread_hash = lh_ERR_STATE_new(); 448 if (int_thread_hash) { 449 int_thread_hash_references++; 450 ret = int_thread_hash; 451 } 452 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 453 return ret; 454} 455 456static void 457int_thread_release(LHASH_OF(ERR_STATE) **hash) 458{ 459 int i; 460 461 if (hash == NULL || *hash == NULL) 462 return; 463 464 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 465 if (i > 0) 466 return; 467 468 *hash = NULL; 469} 470 471static ERR_STATE * 472int_thread_get_item(const ERR_STATE *d) 473{ 474 ERR_STATE *p; 475 LHASH_OF(ERR_STATE) *hash; 476 477 err_fns_check(); 478 hash = ERRFN(thread_get)(0); 479 if (!hash) 480 return NULL; 481 482 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 483 p = lh_ERR_STATE_retrieve(hash, d); 484 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 485 486 ERRFN(thread_release)(&hash); 487 return p; 488} 489 490static ERR_STATE * 491int_thread_set_item(ERR_STATE *d) 492{ 493 ERR_STATE *p; 494 LHASH_OF(ERR_STATE) *hash; 495 496 err_fns_check(); 497 hash = ERRFN(thread_get)(1); 498 if (!hash) 499 return NULL; 500 501 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 502 p = lh_ERR_STATE_insert(hash, d); 503 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 504 505 ERRFN(thread_release)(&hash); 506 return p; 507} 508 509static void 510int_thread_del_item(const ERR_STATE *d) 511{ 512 ERR_STATE *p; 513 LHASH_OF(ERR_STATE) *hash; 514 515 err_fns_check(); 516 hash = ERRFN(thread_get)(0); 517 if (!hash) 518 return; 519 520 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 521 p = lh_ERR_STATE_delete(hash, d); 522 /* make sure we don't leak memory */ 523 if (int_thread_hash_references == 1 && 524 int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) { 525 lh_ERR_STATE_free(int_thread_hash); 526 int_thread_hash = NULL; 527 } 528 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 529 530 ERRFN(thread_release)(&hash); 531 if (p) 532 ERR_STATE_free(p); 533} 534 535static int 536int_err_get_next_lib(void) 537{ 538 int ret; 539 540 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 541 ret = int_err_library_number++; 542 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 543 544 return ret; 545} 546 547 548#ifndef OPENSSL_NO_ERR 549#define NUM_SYS_STR_REASONS 127 550#define LEN_SYS_STR_REASON 32 551 552static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 553/* SYS_str_reasons is filled with copies of strerror() results at 554 * initialization. 555 * 'errno' values up to 127 should cover all usual errors, 556 * others will be displayed numerically by ERR_error_string. 557 * It is crucial that we have something for each reason code 558 * that occurs in ERR_str_reasons, or bogus reason strings 559 * will be returned for SYSerror(which always gets an errno 560 * value and never one of those 'standard' reason codes. */ 561 562static void 563build_SYS_str_reasons(void) 564{ 565 /* malloc cannot be used here, use static storage instead */ 566 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 567 int i; 568 static int init = 1; 569 int save_errno; 570 571 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 572 if (!init) { 573 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 574 return; 575 } 576 577 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 578 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 579 if (!init) { 580 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 581 return; 582 } 583 584 /* strerror(3) will set errno to EINVAL when i is an unknown errno. */ 585 save_errno = errno; 586 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { 587 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 588 589 str->error = (unsigned long)i; 590 if (str->string == NULL) { 591 char (*dest)[LEN_SYS_STR_REASON] = 592 &(strerror_tab[i - 1]); 593 const char *src = strerror(i); 594 if (src != NULL) { 595 strlcpy(*dest, src, sizeof *dest); 596 str->string = *dest; 597 } 598 } 599 if (str->string == NULL) 600 str->string = "unknown"; 601 } 602 errno = save_errno; 603 604 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 605 * as required by ERR_load_strings. */ 606 607 init = 0; 608 609 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 610} 611#endif 612 613#define err_clear_data(p,i) \ 614 do { \ 615 if (((p)->err_data[i] != NULL) && \ 616 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) { \ 617 free((p)->err_data[i]); \ 618 (p)->err_data[i] = NULL; \ 619 } \ 620 (p)->err_data_flags[i] = 0; \ 621 } while(0) 622 623#define err_clear(p,i) \ 624 do { \ 625 (p)->err_flags[i] = 0; \ 626 (p)->err_buffer[i] = 0; \ 627 err_clear_data(p, i); \ 628 (p)->err_file[i] = NULL; \ 629 (p)->err_line[i] = -1; \ 630 } while(0) 631 632static void 633ERR_STATE_free(ERR_STATE *s) 634{ 635 int i; 636 637 if (s == NULL) 638 return; 639 640 for (i = 0; i < ERR_NUM_ERRORS; i++) { 641 err_clear_data(s, i); 642 } 643 free(s); 644} 645 646void 647ERR_load_ERR_strings_internal(void) 648{ 649 err_init_thread = pthread_self(); 650 err_fns_check(); 651#ifndef OPENSSL_NO_ERR 652 err_load_strings(0, ERR_str_libraries); 653 err_load_strings(0, ERR_str_reasons); 654 err_load_strings(ERR_LIB_SYS, ERR_str_functs); 655 build_SYS_str_reasons(); 656 err_load_strings(ERR_LIB_SYS, SYS_str_reasons); 657#endif 658} 659 660 661void 662ERR_load_ERR_strings(void) 663{ 664 static pthread_once_t once = PTHREAD_ONCE_INIT; 665 666 if (pthread_equal(pthread_self(), err_init_thread)) 667 return; /* don't recurse */ 668 669 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 670 (void) OPENSSL_init_crypto(0, NULL); 671 672 (void) pthread_once(&once, ERR_load_ERR_strings_internal); 673} 674LCRYPTO_ALIAS(ERR_load_ERR_strings); 675 676static void 677err_load_strings(int lib, ERR_STRING_DATA *str) 678{ 679 while (str->error) { 680 if (lib) 681 str->error |= ERR_PACK(lib, 0, 0); 682 ERRFN(err_set_item)(str); 683 str++; 684 } 685} 686 687void 688ERR_load_strings(int lib, ERR_STRING_DATA *str) 689{ 690 ERR_load_ERR_strings(); 691 err_load_strings(lib, str); 692} 693LCRYPTO_ALIAS(ERR_load_strings); 694 695void 696ERR_unload_strings(int lib, ERR_STRING_DATA *str) 697{ 698 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 699 (void) OPENSSL_init_crypto(0, NULL); 700 701 while (str->error) { 702 if (lib) 703 str->error |= ERR_PACK(lib, 0, 0); 704 ERRFN(err_del_item)(str); 705 str++; 706 } 707} 708LCRYPTO_ALIAS(ERR_unload_strings); 709 710void 711ERR_free_strings(void) 712{ 713 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 714 (void) OPENSSL_init_crypto(0, NULL); 715 716 err_fns_check(); 717 ERRFN(err_del)(); 718} 719LCRYPTO_ALIAS(ERR_free_strings); 720 721/********************************************************/ 722 723void 724ERR_put_error(int lib, int func, int reason, const char *file, int line) 725{ 726 ERR_STATE *es; 727 int save_errno = errno; 728 729 es = ERR_get_state(); 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 errno = save_errno; 740} 741LCRYPTO_ALIAS(ERR_put_error); 742 743void 744ERR_clear_error(void) 745{ 746 int i; 747 ERR_STATE *es; 748 749 es = ERR_get_state(); 750 751 for (i = 0; i < ERR_NUM_ERRORS; i++) { 752 err_clear(es, i); 753 } 754 es->top = es->bottom = 0; 755} 756LCRYPTO_ALIAS(ERR_clear_error); 757 758 759unsigned long 760ERR_get_error(void) 761{ 762 return (get_error_values(1, 0, NULL, NULL, NULL, NULL)); 763} 764LCRYPTO_ALIAS(ERR_get_error); 765 766unsigned long 767ERR_get_error_line(const char **file, int *line) 768{ 769 return (get_error_values(1, 0, file, line, NULL, NULL)); 770} 771LCRYPTO_ALIAS(ERR_get_error_line); 772 773unsigned long 774ERR_get_error_line_data(const char **file, int *line, 775 const char **data, int *flags) 776{ 777 return (get_error_values(1, 0, file, line, data, flags)); 778} 779LCRYPTO_ALIAS(ERR_get_error_line_data); 780 781 782unsigned long 783ERR_peek_error(void) 784{ 785 return (get_error_values(0, 0, NULL, NULL, NULL, NULL)); 786} 787LCRYPTO_ALIAS(ERR_peek_error); 788 789unsigned long 790ERR_peek_error_line(const char **file, int *line) 791{ 792 return (get_error_values(0, 0, file, line, NULL, NULL)); 793} 794LCRYPTO_ALIAS(ERR_peek_error_line); 795 796unsigned long 797ERR_peek_error_line_data(const char **file, int *line, 798 const char **data, int *flags) 799{ 800 return (get_error_values(0, 0, file, line, data, flags)); 801} 802LCRYPTO_ALIAS(ERR_peek_error_line_data); 803 804unsigned long 805ERR_peek_last_error(void) 806{ 807 return (get_error_values(0, 1, NULL, NULL, NULL, NULL)); 808} 809LCRYPTO_ALIAS(ERR_peek_last_error); 810 811unsigned long 812ERR_peek_last_error_line(const char **file, int *line) 813{ 814 return (get_error_values(0, 1, file, line, NULL, NULL)); 815} 816LCRYPTO_ALIAS(ERR_peek_last_error_line); 817 818unsigned long 819ERR_peek_last_error_line_data(const char **file, int *line, 820 const char **data, int *flags) 821{ 822 return (get_error_values(0, 1, file, line, data, flags)); 823} 824LCRYPTO_ALIAS(ERR_peek_last_error_line_data); 825 826static unsigned long 827get_error_values(int inc, int top, const char **file, int *line, 828 const char **data, int *flags) 829{ 830 int i = 0; 831 ERR_STATE *es; 832 unsigned long ret; 833 834 es = ERR_get_state(); 835 836 if (inc && top) { 837 if (file) 838 *file = ""; 839 if (line) 840 *line = 0; 841 if (data) 842 *data = ""; 843 if (flags) 844 *flags = 0; 845 846 return ERR_R_INTERNAL_ERROR; 847 } 848 849 if (es->bottom == es->top) 850 return 0; 851 if (top) 852 i = es->top; /* last error */ 853 else 854 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */ 855 856 ret = es->err_buffer[i]; 857 if (inc) { 858 es->bottom = i; 859 es->err_buffer[i] = 0; 860 } 861 862 if ((file != NULL) && (line != NULL)) { 863 if (es->err_file[i] == NULL) { 864 *file = "NA"; 865 if (line != NULL) 866 *line = 0; 867 } else { 868 *file = es->err_file[i]; 869 if (line != NULL) 870 *line = es->err_line[i]; 871 } 872 } 873 874 if (data == NULL) { 875 if (inc) { 876 err_clear_data(es, i); 877 } 878 } else { 879 if (es->err_data[i] == NULL) { 880 *data = ""; 881 if (flags != NULL) 882 *flags = 0; 883 } else { 884 *data = es->err_data[i]; 885 if (flags != NULL) 886 *flags = es->err_data_flags[i]; 887 } 888 } 889 return ret; 890} 891 892void 893ERR_error_string_n(unsigned long e, char *buf, size_t len) 894{ 895 char lsbuf[30], fsbuf[30], rsbuf[30]; 896 const char *ls, *fs, *rs; 897 int l, f, r, ret; 898 899 l = ERR_GET_LIB(e); 900 f = ERR_GET_FUNC(e); 901 r = ERR_GET_REASON(e); 902 903 ls = ERR_lib_error_string(e); 904 fs = ERR_func_error_string(e); 905 rs = ERR_reason_error_string(e); 906 907 if (ls == NULL) { 908 (void) snprintf(lsbuf, sizeof(lsbuf), "lib(%d)", l); 909 ls = lsbuf; 910 } 911 if (fs == NULL) { 912 (void) snprintf(fsbuf, sizeof(fsbuf), "func(%d)", f); 913 fs = fsbuf; 914 } 915 if (rs == NULL) { 916 (void) snprintf(rsbuf, sizeof(rsbuf), "reason(%d)", r); 917 rs = rsbuf; 918 } 919 920 ret = snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs); 921 if (ret == -1) 922 return; /* can't happen, and can't do better if it does */ 923 if (ret >= len) { 924 /* output may be truncated; make sure we always have 5 925 * colon-separated fields, i.e. 4 colons ... */ 926#define NUM_COLONS 4 927 if (len > NUM_COLONS) /* ... if possible */ 928 { 929 int i; 930 char *s = buf; 931 932 for (i = 0; i < NUM_COLONS; i++) { 933 char *colon = strchr(s, ':'); 934 if (colon == NULL || 935 colon > &buf[len - 1] - NUM_COLONS + i) { 936 /* set colon no. i at last possible position 937 * (buf[len-1] is the terminating 0)*/ 938 colon = &buf[len - 1] - NUM_COLONS + i; 939 *colon = ':'; 940 } 941 s = colon + 1; 942 } 943 } 944 } 945} 946LCRYPTO_ALIAS(ERR_error_string_n); 947 948/* BAD for multi-threading: uses a local buffer if ret == NULL */ 949/* ERR_error_string_n should be used instead for ret != NULL 950 * as ERR_error_string cannot know how large the buffer is */ 951char * 952ERR_error_string(unsigned long e, char *ret) 953{ 954 static char buf[256]; 955 956 if (ret == NULL) 957 ret = buf; 958 ERR_error_string_n(e, ret, 256); 959 960 return ret; 961} 962LCRYPTO_ALIAS(ERR_error_string); 963 964const char * 965ERR_lib_error_string(unsigned long e) 966{ 967 ERR_STRING_DATA d, *p; 968 unsigned long l; 969 970 if (!OPENSSL_init_crypto(0, NULL)) 971 return NULL; 972 973 err_fns_check(); 974 l = ERR_GET_LIB(e); 975 d.error = ERR_PACK(l, 0, 0); 976 p = ERRFN(err_get_item)(&d); 977 return ((p == NULL) ? NULL : p->string); 978} 979LCRYPTO_ALIAS(ERR_lib_error_string); 980 981const char * 982ERR_func_error_string(unsigned long e) 983{ 984 ERR_STRING_DATA d, *p; 985 unsigned long l, f; 986 987 err_fns_check(); 988 l = ERR_GET_LIB(e); 989 f = ERR_GET_FUNC(e); 990 d.error = ERR_PACK(l, f, 0); 991 p = ERRFN(err_get_item)(&d); 992 return ((p == NULL) ? NULL : p->string); 993} 994LCRYPTO_ALIAS(ERR_func_error_string); 995 996const char * 997ERR_reason_error_string(unsigned long e) 998{ 999 ERR_STRING_DATA d, *p = NULL; 1000 unsigned long l, r; 1001 1002 err_fns_check(); 1003 l = ERR_GET_LIB(e); 1004 r = ERR_GET_REASON(e); 1005 d.error = ERR_PACK(l, 0, r); 1006 p = ERRFN(err_get_item)(&d); 1007 if (!p) { 1008 d.error = ERR_PACK(0, 0, r); 1009 p = ERRFN(err_get_item)(&d); 1010 } 1011 return ((p == NULL) ? NULL : p->string); 1012} 1013LCRYPTO_ALIAS(ERR_reason_error_string); 1014 1015void 1016ERR_remove_thread_state(const CRYPTO_THREADID *id) 1017{ 1018 ERR_STATE tmp; 1019 1020 if (id) 1021 CRYPTO_THREADID_cpy(&tmp.tid, id); 1022 else 1023 CRYPTO_THREADID_current(&tmp.tid); 1024 err_fns_check(); 1025 /* thread_del_item automatically destroys the LHASH if the number of 1026 * items reaches zero. */ 1027 ERRFN(thread_del_item)(&tmp); 1028} 1029LCRYPTO_ALIAS(ERR_remove_thread_state); 1030 1031void 1032ERR_remove_state(unsigned long pid) 1033{ 1034 ERR_remove_thread_state(NULL); 1035} 1036LCRYPTO_ALIAS(ERR_remove_state); 1037 1038static ERR_STATE * 1039ERR_get_state(void) 1040{ 1041 static ERR_STATE fallback; 1042 ERR_STATE *ret, tmp, *tmpp = NULL; 1043 int i; 1044 CRYPTO_THREADID tid; 1045 1046 err_fns_check(); 1047 CRYPTO_THREADID_current(&tid); 1048 CRYPTO_THREADID_cpy(&tmp.tid, &tid); 1049 ret = ERRFN(thread_get_item)(&tmp); 1050 1051 /* ret == the error state, if NULL, make a new one */ 1052 if (ret == NULL) { 1053 ret = malloc(sizeof(ERR_STATE)); 1054 if (ret == NULL) 1055 return (&fallback); 1056 CRYPTO_THREADID_cpy(&ret->tid, &tid); 1057 ret->top = 0; 1058 ret->bottom = 0; 1059 for (i = 0; i < ERR_NUM_ERRORS; i++) { 1060 ret->err_data[i] = NULL; 1061 ret->err_data_flags[i] = 0; 1062 } 1063 tmpp = ERRFN(thread_set_item)(ret); 1064 /* To check if insertion failed, do a get. */ 1065 if (ERRFN(thread_get_item)(ret) != ret) { 1066 ERR_STATE_free(ret); /* could not insert it */ 1067 return (&fallback); 1068 } 1069 /* If a race occurred in this function and we came second, tmpp 1070 * is the first one that we just replaced. */ 1071 if (tmpp) 1072 ERR_STATE_free(tmpp); 1073 } 1074 return ret; 1075} 1076 1077int 1078ERR_get_next_error_library(void) 1079{ 1080 err_fns_check(); 1081 return ERRFN(get_next_lib)(); 1082} 1083LCRYPTO_ALIAS(ERR_get_next_error_library); 1084 1085void 1086ERR_set_error_data(char *data, int flags) 1087{ 1088 ERR_STATE *es; 1089 int i; 1090 1091 es = ERR_get_state(); 1092 1093 i = es->top; 1094 if (i == 0) 1095 i = ERR_NUM_ERRORS - 1; 1096 1097 err_clear_data(es, i); 1098 es->err_data[i] = data; 1099 es->err_data_flags[i] = flags; 1100} 1101LCRYPTO_ALIAS(ERR_set_error_data); 1102 1103void 1104ERR_asprintf_error_data(char * format, ...) 1105{ 1106 char *errbuf = NULL; 1107 va_list ap; 1108 int r; 1109 1110 va_start(ap, format); 1111 r = vasprintf(&errbuf, format, ap); 1112 va_end(ap); 1113 if (r == -1) 1114 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1115 else 1116 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1117} 1118LCRYPTO_ALIAS(ERR_asprintf_error_data); 1119 1120void 1121ERR_add_error_vdata(int num, va_list args) 1122{ 1123 char format[129]; 1124 char *errbuf; 1125 int i; 1126 1127 format[0] = '\0'; 1128 for (i = 0; i < num; i++) { 1129 if (strlcat(format, "%s", sizeof(format)) >= sizeof(format)) { 1130 ERR_set_error_data("too many errors", ERR_TXT_STRING); 1131 return; 1132 } 1133 } 1134 if (vasprintf(&errbuf, format, args) == -1) 1135 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1136 else 1137 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1138} 1139 1140void 1141ERR_add_error_data(int num, ...) 1142{ 1143 va_list args; 1144 va_start(args, num); 1145 ERR_add_error_vdata(num, args); 1146 va_end(args); 1147} 1148 1149int 1150ERR_set_mark(void) 1151{ 1152 ERR_STATE *es; 1153 1154 es = ERR_get_state(); 1155 1156 if (es->bottom == es->top) 1157 return 0; 1158 es->err_flags[es->top] |= ERR_FLAG_MARK; 1159 return 1; 1160} 1161LCRYPTO_ALIAS(ERR_set_mark); 1162 1163int 1164ERR_pop_to_mark(void) 1165{ 1166 ERR_STATE *es; 1167 1168 es = ERR_get_state(); 1169 1170 while (es->bottom != es->top && 1171 (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { 1172 err_clear(es, es->top); 1173 es->top -= 1; 1174 if (es->top == -1) 1175 es->top = ERR_NUM_ERRORS - 1; 1176 } 1177 1178 if (es->bottom == es->top) 1179 return 0; 1180 es->err_flags[es->top]&=~ERR_FLAG_MARK; 1181 return 1; 1182} 1183LCRYPTO_ALIAS(ERR_pop_to_mark); 1184 1185void 1186err_clear_last_constant_time(int clear) 1187{ 1188 ERR_STATE *es; 1189 int top; 1190 1191 es = ERR_get_state(); 1192 if (es == NULL) 1193 return; 1194 1195 top = es->top; 1196 1197 es->err_flags[top] &= ~(0 - clear); 1198 es->err_buffer[top] &= ~(0UL - clear); 1199 es->err_file[top] = (const char *)((uintptr_t)es->err_file[top] & 1200 ~((uintptr_t)0 - clear)); 1201 es->err_line[top] |= 0 - clear; 1202 1203 es->top = (top + ERR_NUM_ERRORS - clear) % ERR_NUM_ERRORS; 1204} 1205