1 /* $OpenBSD: err.c,v 1.75 2024/11/02 12:46:36 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 DECLARE_LHASH_OF(ERR_STRING_DATA); 126 DECLARE_LHASH_OF(ERR_STATE); 127 128 typedef struct err_state_st { 129 pthread_t tid; 130 int err_flags[ERR_NUM_ERRORS]; 131 unsigned long err_buffer[ERR_NUM_ERRORS]; 132 char *err_data[ERR_NUM_ERRORS]; 133 int err_data_flags[ERR_NUM_ERRORS]; 134 const char *err_file[ERR_NUM_ERRORS]; 135 int err_line[ERR_NUM_ERRORS]; 136 int top, bottom; 137 } ERR_STATE; 138 139 #ifndef OPENSSL_NO_ERR 140 static const ERR_STRING_DATA ERR_str_libraries[] = { 141 {ERR_PACK(ERR_LIB_NONE, 0, 0), "unknown library"}, 142 {ERR_PACK(ERR_LIB_SYS, 0, 0), "system library"}, 143 {ERR_PACK(ERR_LIB_BN, 0, 0), "bignum routines"}, 144 {ERR_PACK(ERR_LIB_RSA, 0, 0), "rsa routines"}, 145 {ERR_PACK(ERR_LIB_DH, 0, 0), "Diffie-Hellman routines"}, 146 {ERR_PACK(ERR_LIB_EVP, 0, 0), "digital envelope routines"}, 147 {ERR_PACK(ERR_LIB_BUF, 0, 0), "memory buffer routines"}, 148 {ERR_PACK(ERR_LIB_OBJ, 0, 0), "object identifier routines"}, 149 {ERR_PACK(ERR_LIB_PEM, 0, 0), "PEM routines"}, 150 {ERR_PACK(ERR_LIB_DSA, 0, 0), "dsa routines"}, 151 {ERR_PACK(ERR_LIB_X509, 0, 0), "x509 certificate routines"}, 152 {ERR_PACK(ERR_LIB_ASN1, 0, 0), "asn1 encoding routines"}, 153 {ERR_PACK(ERR_LIB_CONF, 0, 0), "configuration file routines"}, 154 {ERR_PACK(ERR_LIB_CRYPTO, 0, 0), "common libcrypto routines"}, 155 {ERR_PACK(ERR_LIB_EC, 0, 0), "elliptic curve routines"}, 156 {ERR_PACK(ERR_LIB_SSL, 0, 0), "SSL routines"}, 157 {ERR_PACK(ERR_LIB_BIO, 0, 0), "BIO routines"}, 158 {ERR_PACK(ERR_LIB_PKCS7, 0, 0), "PKCS7 routines"}, 159 {ERR_PACK(ERR_LIB_X509V3, 0, 0), "X509 V3 routines"}, 160 {ERR_PACK(ERR_LIB_PKCS12, 0, 0), "PKCS12 routines"}, 161 {ERR_PACK(ERR_LIB_RAND, 0, 0), "random number generator"}, 162 {ERR_PACK(ERR_LIB_DSO, 0, 0), "DSO support routines"}, 163 {ERR_PACK(ERR_LIB_TS, 0, 0), "time stamp routines"}, 164 {ERR_PACK(ERR_LIB_ENGINE, 0, 0), "engine routines"}, 165 {ERR_PACK(ERR_LIB_OCSP, 0, 0), "OCSP routines"}, 166 {ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"}, 167 {ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"}, 168 {ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"}, 169 {ERR_PACK(ERR_LIB_GOST, 0, 0), "GOST routines"}, 170 {0, NULL}, 171 }; 172 173 static const ERR_STRING_DATA ERR_str_functs[] = { 174 {ERR_PACK(ERR_LIB_SYS, SYS_F_FOPEN, 0), "fopen"}, 175 {ERR_PACK(ERR_LIB_SYS, SYS_F_CONNECT, 0), "connect"}, 176 {ERR_PACK(ERR_LIB_SYS, SYS_F_GETSERVBYNAME, 0), "getservbyname"}, 177 {ERR_PACK(ERR_LIB_SYS, SYS_F_SOCKET, 0), "socket"}, 178 {ERR_PACK(ERR_LIB_SYS, SYS_F_IOCTLSOCKET, 0), "ioctl"}, 179 {ERR_PACK(ERR_LIB_SYS, SYS_F_BIND, 0), "bind"}, 180 {ERR_PACK(ERR_LIB_SYS, SYS_F_LISTEN, 0), "listen"}, 181 {ERR_PACK(ERR_LIB_SYS, SYS_F_ACCEPT, 0), "accept"}, 182 {ERR_PACK(ERR_LIB_SYS, SYS_F_OPENDIR, 0), "opendir"}, 183 {ERR_PACK(ERR_LIB_SYS, SYS_F_FREAD, 0), "fread"}, 184 {0, NULL}, 185 }; 186 187 static const ERR_STRING_DATA ERR_str_reasons[] = { 188 {ERR_R_SYS_LIB, "system lib"}, 189 {ERR_R_BN_LIB, "BN lib"}, 190 {ERR_R_RSA_LIB, "RSA lib"}, 191 {ERR_R_DH_LIB, "DH lib"}, 192 {ERR_R_EVP_LIB, "EVP lib"}, 193 {ERR_R_BUF_LIB, "BUF lib"}, 194 {ERR_R_OBJ_LIB, "OBJ lib"}, 195 {ERR_R_PEM_LIB, "PEM lib"}, 196 {ERR_R_DSA_LIB, "DSA lib"}, 197 {ERR_R_X509_LIB, "X509 lib"}, 198 {ERR_R_ASN1_LIB, "ASN1 lib"}, 199 {ERR_R_CONF_LIB, "CONF lib"}, 200 {ERR_R_CRYPTO_LIB, "CRYPTO lib"}, 201 {ERR_R_EC_LIB, "EC lib"}, 202 {ERR_R_SSL_LIB, "SSL lib"}, 203 {ERR_R_BIO_LIB, "BIO lib"}, 204 {ERR_R_PKCS7_LIB, "PKCS7 lib"}, 205 {ERR_R_X509V3_LIB, "X509V3 lib"}, 206 {ERR_R_PKCS12_LIB, "PKCS12 lib"}, 207 {ERR_R_RAND_LIB, "RAND lib"}, 208 {ERR_R_DSO_LIB, "DSO lib"}, 209 {ERR_R_ENGINE_LIB, "ENGINE lib"}, 210 {ERR_R_OCSP_LIB, "OCSP lib"}, 211 {ERR_R_TS_LIB, "TS lib"}, 212 213 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"}, 214 {ERR_R_BAD_ASN1_OBJECT_HEADER, "bad asn1 object header"}, 215 {ERR_R_BAD_GET_ASN1_OBJECT_CALL, "bad get asn1 object call"}, 216 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE, "expecting an asn1 sequence"}, 217 {ERR_R_ASN1_LENGTH_MISMATCH, "asn1 length mismatch"}, 218 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"}, 219 220 {ERR_R_FATAL, "fatal"}, 221 {ERR_R_MALLOC_FAILURE, "malloc failure"}, 222 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, "called a function you should not call"}, 223 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"}, 224 {ERR_R_INTERNAL_ERROR, "internal error"}, 225 {ERR_R_DISABLED, "called a function that was disabled at compile-time"}, 226 {ERR_R_INIT_FAIL, "initialization failure"}, 227 228 {0, NULL}, 229 }; 230 #endif 231 232 static void ERR_STATE_free(ERR_STATE *s); 233 234 /* 235 * The internal state used by "err_defaults" - as such, the setting, reading, 236 * creating, and deleting of this data should only be permitted via the 237 * "err_defaults" functions. This way, a linked module can completely defer all 238 * ERR state operation (together with requisite locking) to the implementations 239 * and state in the loading application. 240 */ 241 static LHASH_OF(ERR_STRING_DATA) *err_error_hash = NULL; 242 static LHASH_OF(ERR_STATE) *err_thread_hash = NULL; 243 static int err_thread_hash_references = 0; 244 static int err_library_number = ERR_LIB_USER; 245 246 static pthread_t err_init_thread; 247 248 /* 249 * These are the callbacks provided to "lh_new()" when creating the LHASH tables 250 * internal to the "err_defaults" implementation. 251 */ 252 253 static unsigned long 254 err_string_data_hash(const ERR_STRING_DATA *a) 255 { 256 unsigned long ret, l; 257 258 l = a->error; 259 ret = l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 260 return (ret^ret % 19*13); 261 } 262 static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA) 263 264 static int 265 err_string_data_cmp(const ERR_STRING_DATA *a, const ERR_STRING_DATA *b) 266 { 267 return (int)(a->error - b->error); 268 } 269 static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA) 270 271 static LHASH_OF(ERR_STRING_DATA) * 272 err_get(int create) 273 { 274 LHASH_OF(ERR_STRING_DATA) *ret = NULL; 275 276 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 277 if (!err_error_hash && create) 278 err_error_hash = lh_ERR_STRING_DATA_new(); 279 if (err_error_hash) 280 ret = err_error_hash; 281 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 282 283 return ret; 284 } 285 286 static void 287 err_del(void) 288 { 289 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 290 if (err_error_hash) { 291 lh_ERR_STRING_DATA_free(err_error_hash); 292 err_error_hash = NULL; 293 } 294 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 295 } 296 297 static const ERR_STRING_DATA * 298 err_get_item(const ERR_STRING_DATA *d) 299 { 300 ERR_STRING_DATA *p; 301 LHASH_OF(ERR_STRING_DATA) *hash; 302 303 hash = err_get(0); 304 if (!hash) 305 return NULL; 306 307 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 308 p = lh_ERR_STRING_DATA_retrieve(hash, d); 309 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 310 311 return p; 312 } 313 314 static const ERR_STRING_DATA * 315 err_set_item(const ERR_STRING_DATA *d) 316 { 317 const ERR_STRING_DATA *p; 318 LHASH_OF(ERR_STRING_DATA) *hash; 319 320 hash = err_get(1); 321 if (!hash) 322 return NULL; 323 324 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 325 p = lh_ERR_STRING_DATA_insert(hash, (void *)d); 326 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 327 328 return p; 329 } 330 331 static const ERR_STRING_DATA * 332 err_del_item(const ERR_STRING_DATA *d) 333 { 334 ERR_STRING_DATA *p; 335 LHASH_OF(ERR_STRING_DATA) *hash; 336 337 hash = err_get(0); 338 if (!hash) 339 return NULL; 340 341 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 342 p = lh_ERR_STRING_DATA_delete(hash, d); 343 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 344 345 return p; 346 } 347 348 static unsigned long 349 err_state_hash(const ERR_STATE *a) 350 { 351 return 13 * (unsigned long)a->tid; 352 } 353 static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) 354 355 static int 356 err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) 357 { 358 return pthread_equal(a->tid, b->tid) == 0; 359 } 360 static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) 361 362 static LHASH_OF(ERR_STATE) * 363 err_thread_get(int create) 364 { 365 LHASH_OF(ERR_STATE) *ret = NULL; 366 367 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 368 if (!err_thread_hash && create) 369 err_thread_hash = lh_ERR_STATE_new(); 370 if (err_thread_hash) { 371 err_thread_hash_references++; 372 ret = err_thread_hash; 373 } 374 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 375 return ret; 376 } 377 378 static void 379 err_thread_release(LHASH_OF(ERR_STATE) **hash) 380 { 381 int i; 382 383 if (hash == NULL || *hash == NULL) 384 return; 385 386 i = CRYPTO_add(&err_thread_hash_references, -1, CRYPTO_LOCK_ERR); 387 if (i > 0) 388 return; 389 390 *hash = NULL; 391 } 392 393 static ERR_STATE * 394 err_thread_get_item(const ERR_STATE *d) 395 { 396 ERR_STATE *p; 397 LHASH_OF(ERR_STATE) *hash; 398 399 hash = err_thread_get(0); 400 if (!hash) 401 return NULL; 402 403 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 404 p = lh_ERR_STATE_retrieve(hash, d); 405 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 406 407 err_thread_release(&hash); 408 return p; 409 } 410 411 static ERR_STATE * 412 err_thread_set_item(ERR_STATE *d) 413 { 414 ERR_STATE *p; 415 LHASH_OF(ERR_STATE) *hash; 416 417 hash = err_thread_get(1); 418 if (!hash) 419 return NULL; 420 421 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 422 p = lh_ERR_STATE_insert(hash, d); 423 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 424 425 err_thread_release(&hash); 426 return p; 427 } 428 429 static void 430 err_thread_del_item(const ERR_STATE *d) 431 { 432 ERR_STATE *p; 433 LHASH_OF(ERR_STATE) *hash; 434 435 hash = err_thread_get(0); 436 if (!hash) 437 return; 438 439 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 440 p = lh_ERR_STATE_delete(hash, d); 441 /* make sure we don't leak memory */ 442 if (err_thread_hash_references == 1 && 443 err_thread_hash && lh_ERR_STATE_num_items(err_thread_hash) == 0) { 444 lh_ERR_STATE_free(err_thread_hash); 445 err_thread_hash = NULL; 446 } 447 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 448 449 err_thread_release(&hash); 450 if (p) 451 ERR_STATE_free(p); 452 } 453 454 static int 455 err_get_next_lib(void) 456 { 457 int ret; 458 459 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 460 ret = err_library_number++; 461 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 462 463 return ret; 464 } 465 466 467 #ifndef OPENSSL_NO_ERR 468 #define NUM_SYS_STR_REASONS 127 469 #define LEN_SYS_STR_REASON 32 470 471 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 472 473 /* 474 * SYS_str_reasons is filled with copies of strerror() results at 475 * initialization. 'errno' values up to 127 should cover all usual errors, 476 * others will be displayed numerically by ERR_error_string. It is crucial that 477 * we have something for each reason code that occurs in ERR_str_reasons, or 478 * bogus reason strings will be returned for SYSerror(), which always gets an 479 * errno value and never one of those 'standard' reason codes. 480 */ 481 482 static void 483 err_build_SYS_str_reasons(void) 484 { 485 /* malloc cannot be used here, use static storage instead */ 486 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 487 int save_errno; 488 int i; 489 490 /* strerror(3) will set errno to EINVAL when i is an unknown errno. */ 491 save_errno = errno; 492 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { 493 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 494 495 str->error = (unsigned long)i; 496 if (str->string == NULL) { 497 char (*dest)[LEN_SYS_STR_REASON] = 498 &(strerror_tab[i - 1]); 499 const char *src = strerror(i); 500 if (src != NULL) { 501 strlcpy(*dest, src, sizeof *dest); 502 str->string = *dest; 503 } 504 } 505 if (str->string == NULL) 506 str->string = "unknown"; 507 } 508 errno = save_errno; 509 510 /* 511 * Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 512 * as required by ERR_load_strings. 513 */ 514 } 515 #endif 516 517 static void 518 err_clear_data(ERR_STATE *s, int i) 519 { 520 if ((s->err_data_flags[i] & ERR_TXT_MALLOCED) != 0) 521 free(s->err_data[i]); 522 523 s->err_data[i] = NULL; 524 s->err_data_flags[i] = 0; 525 } 526 527 static void 528 err_clear(ERR_STATE *s, int i) 529 { 530 s->err_flags[i] = 0; 531 s->err_buffer[i] = 0; 532 s->err_file[i] = NULL; 533 s->err_line[i] = -1; 534 535 err_clear_data(s, i); 536 } 537 538 static void 539 ERR_STATE_free(ERR_STATE *s) 540 { 541 int i; 542 543 if (s == NULL) 544 return; 545 546 for (i = 0; i < ERR_NUM_ERRORS; i++) 547 err_clear_data(s, i); 548 549 free(s); 550 } 551 552 static ERR_STATE * 553 ERR_get_state(void) 554 { 555 static ERR_STATE fallback; 556 ERR_STATE *ret, tmp, *tmpp = NULL; 557 int i; 558 559 tmp.tid = pthread_self(); 560 ret = err_thread_get_item(&tmp); 561 562 /* ret == the error state, if NULL, make a new one */ 563 if (ret == NULL) { 564 ret = malloc(sizeof(ERR_STATE)); 565 if (ret == NULL) 566 return (&fallback); 567 ret->tid = pthread_self(); 568 ret->top = 0; 569 ret->bottom = 0; 570 for (i = 0; i < ERR_NUM_ERRORS; i++) { 571 ret->err_data[i] = NULL; 572 ret->err_data_flags[i] = 0; 573 } 574 tmpp = err_thread_set_item(ret); 575 /* To check if insertion failed, do a get. */ 576 if (err_thread_get_item(ret) != ret) { 577 ERR_STATE_free(ret); /* could not insert it */ 578 return (&fallback); 579 } 580 /* 581 * If a race occurred in this function and we came second, 582 * tmpp is the first one that we just replaced. 583 */ 584 if (tmpp) 585 ERR_STATE_free(tmpp); 586 } 587 return ret; 588 } 589 590 static void 591 err_load_strings(int lib, ERR_STRING_DATA *str) 592 { 593 while (str->error != 0) { 594 if (lib) 595 str->error |= ERR_PACK(lib, 0, 0); 596 err_set_item(str); 597 str++; 598 } 599 } 600 601 static void 602 err_load_const_strings(const ERR_STRING_DATA *str) 603 { 604 while (str->error != 0) { 605 err_set_item(str); 606 str++; 607 } 608 } 609 610 static unsigned long 611 get_error_values(int inc, int top, const char **file, int *line, 612 const char **data, int *flags) 613 { 614 int i = 0; 615 ERR_STATE *es; 616 unsigned long ret; 617 618 es = ERR_get_state(); 619 620 if (inc && top) { 621 if (file) 622 *file = ""; 623 if (line) 624 *line = 0; 625 if (data) 626 *data = ""; 627 if (flags) 628 *flags = 0; 629 630 return ERR_R_INTERNAL_ERROR; 631 } 632 633 if (es->bottom == es->top) 634 return 0; 635 if (top) 636 i = es->top; /* last error */ 637 else 638 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */ 639 640 ret = es->err_buffer[i]; 641 if (inc) { 642 es->bottom = i; 643 es->err_buffer[i] = 0; 644 } 645 646 if ((file != NULL) && (line != NULL)) { 647 if (es->err_file[i] == NULL) { 648 *file = "NA"; 649 if (line != NULL) 650 *line = 0; 651 } else { 652 *file = es->err_file[i]; 653 if (line != NULL) 654 *line = es->err_line[i]; 655 } 656 } 657 658 if (data == NULL) { 659 if (inc) { 660 err_clear_data(es, i); 661 } 662 } else { 663 if (es->err_data[i] == NULL) { 664 *data = ""; 665 if (flags != NULL) 666 *flags = 0; 667 } else { 668 *data = es->err_data[i]; 669 if (flags != NULL) 670 *flags = es->err_data_flags[i]; 671 } 672 } 673 return ret; 674 } 675 676 void 677 ERR_load_ERR_strings_internal(void) 678 { 679 err_init_thread = pthread_self(); 680 #ifndef OPENSSL_NO_ERR 681 err_load_const_strings(ERR_str_libraries); 682 err_load_const_strings(ERR_str_reasons); 683 err_load_const_strings(ERR_str_functs); 684 err_build_SYS_str_reasons(); 685 err_load_strings(ERR_LIB_SYS, SYS_str_reasons); 686 #endif 687 } 688 689 void 690 ERR_load_ERR_strings(void) 691 { 692 static pthread_once_t once = PTHREAD_ONCE_INIT; 693 694 if (pthread_equal(pthread_self(), err_init_thread)) 695 return; /* don't recurse */ 696 697 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 698 (void) OPENSSL_init_crypto(0, NULL); 699 700 (void) pthread_once(&once, ERR_load_ERR_strings_internal); 701 } 702 LCRYPTO_ALIAS(ERR_load_ERR_strings); 703 704 void 705 ERR_load_strings(int lib, ERR_STRING_DATA *str) 706 { 707 ERR_load_ERR_strings(); 708 err_load_strings(lib, str); 709 } 710 LCRYPTO_ALIAS(ERR_load_strings); 711 712 void 713 ERR_load_const_strings(const ERR_STRING_DATA *str) 714 { 715 ERR_load_ERR_strings(); 716 err_load_const_strings(str); 717 } 718 719 void 720 ERR_unload_strings(int lib, ERR_STRING_DATA *str) 721 { 722 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 723 (void) OPENSSL_init_crypto(0, NULL); 724 725 while (str->error) { 726 if (lib) 727 str->error |= ERR_PACK(lib, 0, 0); 728 err_del_item(str); 729 str++; 730 } 731 } 732 LCRYPTO_ALIAS(ERR_unload_strings); 733 734 void 735 ERR_free_strings(void) 736 { 737 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 738 (void) OPENSSL_init_crypto(0, NULL); 739 740 err_del(); 741 } 742 LCRYPTO_ALIAS(ERR_free_strings); 743 744 int 745 ERR_get_next_error_library(void) 746 { 747 return err_get_next_lib(); 748 } 749 LCRYPTO_ALIAS(ERR_get_next_error_library); 750 751 void 752 ERR_remove_thread_state(const CRYPTO_THREADID *id) 753 { 754 ERR_STATE tmp; 755 756 OPENSSL_assert(id == NULL); 757 tmp.tid = pthread_self(); 758 759 /* 760 * err_thread_del_item automatically destroys the LHASH if the number of 761 * items reaches zero. 762 */ 763 err_thread_del_item(&tmp); 764 } 765 LCRYPTO_ALIAS(ERR_remove_thread_state); 766 767 void 768 ERR_remove_state(unsigned long pid) 769 { 770 ERR_remove_thread_state(NULL); 771 } 772 LCRYPTO_ALIAS(ERR_remove_state); 773 774 int 775 ERR_set_mark(void) 776 { 777 ERR_STATE *es; 778 779 es = ERR_get_state(); 780 781 if (es->bottom == es->top) 782 return 0; 783 es->err_flags[es->top] |= ERR_FLAG_MARK; 784 return 1; 785 } 786 LCRYPTO_ALIAS(ERR_set_mark); 787 788 int 789 ERR_pop_to_mark(void) 790 { 791 ERR_STATE *es; 792 793 es = ERR_get_state(); 794 795 while (es->bottom != es->top && 796 (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { 797 err_clear(es, es->top); 798 es->top -= 1; 799 if (es->top == -1) 800 es->top = ERR_NUM_ERRORS - 1; 801 } 802 803 if (es->bottom == es->top) 804 return 0; 805 es->err_flags[es->top]&=~ERR_FLAG_MARK; 806 return 1; 807 } 808 LCRYPTO_ALIAS(ERR_pop_to_mark); 809 810 void 811 ERR_clear_error(void) 812 { 813 int i; 814 ERR_STATE *es; 815 816 es = ERR_get_state(); 817 818 for (i = 0; i < ERR_NUM_ERRORS; i++) 819 err_clear(es, i); 820 821 es->top = es->bottom = 0; 822 } 823 LCRYPTO_ALIAS(ERR_clear_error); 824 825 void 826 err_clear_last_constant_time(int clear) 827 { 828 ERR_STATE *es; 829 int top; 830 831 es = ERR_get_state(); 832 if (es == NULL) 833 return; 834 835 top = es->top; 836 837 es->err_flags[top] &= ~(0 - clear); 838 es->err_buffer[top] &= ~(0UL - clear); 839 es->err_file[top] = (const char *)((uintptr_t)es->err_file[top] & 840 ~((uintptr_t)0 - clear)); 841 es->err_line[top] |= 0 - clear; 842 843 es->top = (top + ERR_NUM_ERRORS - clear) % ERR_NUM_ERRORS; 844 } 845 846 void 847 ERR_put_error(int lib, int func, int reason, const char *file, int line) 848 { 849 ERR_STATE *es; 850 int save_errno = errno; 851 852 es = ERR_get_state(); 853 854 es->top = (es->top + 1) % ERR_NUM_ERRORS; 855 if (es->top == es->bottom) 856 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; 857 es->err_flags[es->top] = 0; 858 es->err_buffer[es->top] = ERR_PACK(lib, func, reason); 859 es->err_file[es->top] = file; 860 es->err_line[es->top] = line; 861 err_clear_data(es, es->top); 862 errno = save_errno; 863 } 864 LCRYPTO_ALIAS(ERR_put_error); 865 866 void 867 ERR_asprintf_error_data(char * format, ...) 868 { 869 char *errbuf = NULL; 870 va_list ap; 871 int r; 872 873 va_start(ap, format); 874 r = vasprintf(&errbuf, format, ap); 875 va_end(ap); 876 if (r == -1) 877 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 878 else 879 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 880 } 881 LCRYPTO_ALIAS(ERR_asprintf_error_data); 882 883 void 884 ERR_set_error_data(char *data, int flags) 885 { 886 ERR_STATE *es; 887 int i; 888 889 es = ERR_get_state(); 890 891 i = es->top; 892 if (i == 0) 893 i = ERR_NUM_ERRORS - 1; 894 895 err_clear_data(es, i); 896 es->err_data[i] = data; 897 es->err_data_flags[i] = flags; 898 } 899 LCRYPTO_ALIAS(ERR_set_error_data); 900 901 unsigned long 902 ERR_get_error(void) 903 { 904 return (get_error_values(1, 0, NULL, NULL, NULL, NULL)); 905 } 906 LCRYPTO_ALIAS(ERR_get_error); 907 908 unsigned long 909 ERR_get_error_line(const char **file, int *line) 910 { 911 return (get_error_values(1, 0, file, line, NULL, NULL)); 912 } 913 LCRYPTO_ALIAS(ERR_get_error_line); 914 915 unsigned long 916 ERR_get_error_line_data(const char **file, int *line, 917 const char **data, int *flags) 918 { 919 return (get_error_values(1, 0, file, line, data, flags)); 920 } 921 LCRYPTO_ALIAS(ERR_get_error_line_data); 922 923 unsigned long 924 ERR_peek_error(void) 925 { 926 return (get_error_values(0, 0, NULL, NULL, NULL, NULL)); 927 } 928 LCRYPTO_ALIAS(ERR_peek_error); 929 930 unsigned long 931 ERR_peek_error_line(const char **file, int *line) 932 { 933 return (get_error_values(0, 0, file, line, NULL, NULL)); 934 } 935 LCRYPTO_ALIAS(ERR_peek_error_line); 936 937 unsigned long 938 ERR_peek_error_line_data(const char **file, int *line, 939 const char **data, int *flags) 940 { 941 return (get_error_values(0, 0, file, line, data, flags)); 942 } 943 LCRYPTO_ALIAS(ERR_peek_error_line_data); 944 945 unsigned long 946 ERR_peek_last_error(void) 947 { 948 return (get_error_values(0, 1, NULL, NULL, NULL, NULL)); 949 } 950 LCRYPTO_ALIAS(ERR_peek_last_error); 951 952 unsigned long 953 ERR_peek_last_error_line(const char **file, int *line) 954 { 955 return (get_error_values(0, 1, file, line, NULL, NULL)); 956 } 957 LCRYPTO_ALIAS(ERR_peek_last_error_line); 958 959 unsigned long 960 ERR_peek_last_error_line_data(const char **file, int *line, 961 const char **data, int *flags) 962 { 963 return (get_error_values(0, 1, file, line, data, flags)); 964 } 965 LCRYPTO_ALIAS(ERR_peek_last_error_line_data); 966 967 const char * 968 ERR_lib_error_string(unsigned long e) 969 { 970 const ERR_STRING_DATA *p; 971 ERR_STRING_DATA d; 972 unsigned long l; 973 974 if (!OPENSSL_init_crypto(0, NULL)) 975 return NULL; 976 977 l = ERR_GET_LIB(e); 978 d.error = ERR_PACK(l, 0, 0); 979 p = err_get_item(&d); 980 return ((p == NULL) ? NULL : p->string); 981 } 982 LCRYPTO_ALIAS(ERR_lib_error_string); 983 984 const char * 985 ERR_func_error_string(unsigned long e) 986 { 987 const ERR_STRING_DATA *p; 988 ERR_STRING_DATA d; 989 unsigned long l, f; 990 991 l = ERR_GET_LIB(e); 992 f = ERR_GET_FUNC(e); 993 d.error = ERR_PACK(l, f, 0); 994 p = err_get_item(&d); 995 return ((p == NULL) ? NULL : p->string); 996 } 997 LCRYPTO_ALIAS(ERR_func_error_string); 998 999 const char * 1000 ERR_reason_error_string(unsigned long e) 1001 { 1002 const ERR_STRING_DATA *p = NULL; 1003 ERR_STRING_DATA d; 1004 unsigned long l, r; 1005 1006 l = ERR_GET_LIB(e); 1007 r = ERR_GET_REASON(e); 1008 d.error = ERR_PACK(l, 0, r); 1009 p = err_get_item(&d); 1010 if (!p) { 1011 d.error = ERR_PACK(0, 0, r); 1012 p = err_get_item(&d); 1013 } 1014 return ((p == NULL) ? NULL : p->string); 1015 } 1016 LCRYPTO_ALIAS(ERR_reason_error_string); 1017 1018 void 1019 ERR_error_string_n(unsigned long e, char *buf, size_t len) 1020 { 1021 char lsbuf[30], fsbuf[30], rsbuf[30]; 1022 const char *ls, *fs, *rs; 1023 int l, f, r, ret; 1024 1025 l = ERR_GET_LIB(e); 1026 f = ERR_GET_FUNC(e); 1027 r = ERR_GET_REASON(e); 1028 1029 ls = ERR_lib_error_string(e); 1030 fs = ERR_func_error_string(e); 1031 rs = ERR_reason_error_string(e); 1032 1033 if (ls == NULL) { 1034 (void) snprintf(lsbuf, sizeof(lsbuf), "lib(%d)", l); 1035 ls = lsbuf; 1036 } 1037 if (fs == NULL) { 1038 (void) snprintf(fsbuf, sizeof(fsbuf), "func(%d)", f); 1039 fs = fsbuf; 1040 } 1041 if (rs == NULL) { 1042 (void) snprintf(rsbuf, sizeof(rsbuf), "reason(%d)", r); 1043 rs = rsbuf; 1044 } 1045 1046 ret = snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs); 1047 if (ret == -1) 1048 return; /* can't happen, and can't do better if it does */ 1049 if (ret >= len) { 1050 /* 1051 * output may be truncated; make sure we always have 5 1052 * colon-separated fields, i.e. 4 colons ... 1053 */ 1054 #define NUM_COLONS 4 1055 if (len > NUM_COLONS) /* ... if possible */ 1056 { 1057 int i; 1058 char *s = buf; 1059 1060 for (i = 0; i < NUM_COLONS; i++) { 1061 char *colon = strchr(s, ':'); 1062 if (colon == NULL || 1063 colon > &buf[len - 1] - NUM_COLONS + i) { 1064 /* set colon no. i at last possible position 1065 * (buf[len-1] is the terminating 0)*/ 1066 colon = &buf[len - 1] - NUM_COLONS + i; 1067 *colon = ':'; 1068 } 1069 s = colon + 1; 1070 } 1071 } 1072 } 1073 } 1074 LCRYPTO_ALIAS(ERR_error_string_n); 1075 1076 /* 1077 * ERR_error_string_n should be used instead for ret != NULL 1078 * as ERR_error_string cannot know how large the buffer is. 1079 * 1080 * BAD for multi-threading: uses a local buffer if ret == NULL. 1081 */ 1082 char * 1083 ERR_error_string(unsigned long e, char *ret) 1084 { 1085 static char buf[256]; 1086 1087 if (ret == NULL) 1088 ret = buf; 1089 ERR_error_string_n(e, ret, 256); 1090 1091 return ret; 1092 } 1093 LCRYPTO_ALIAS(ERR_error_string); 1094