1 /* $OpenBSD: err.c,v 1.56 2023/07/28 10:23:19 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 st_ERR_FNS ERR_FNS; 129 130 static void err_load_strings(int lib, ERR_STRING_DATA *str); 131 132 static void ERR_STATE_free(ERR_STATE *s); 133 #ifndef OPENSSL_NO_ERR 134 static ERR_STRING_DATA ERR_str_libraries[] = { 135 {ERR_PACK(ERR_LIB_NONE,0,0), "unknown library"}, 136 {ERR_PACK(ERR_LIB_SYS,0,0), "system library"}, 137 {ERR_PACK(ERR_LIB_BN,0,0), "bignum routines"}, 138 {ERR_PACK(ERR_LIB_RSA,0,0), "rsa routines"}, 139 {ERR_PACK(ERR_LIB_DH,0,0), "Diffie-Hellman routines"}, 140 {ERR_PACK(ERR_LIB_EVP,0,0), "digital envelope routines"}, 141 {ERR_PACK(ERR_LIB_BUF,0,0), "memory buffer routines"}, 142 {ERR_PACK(ERR_LIB_OBJ,0,0), "object identifier routines"}, 143 {ERR_PACK(ERR_LIB_PEM,0,0), "PEM routines"}, 144 {ERR_PACK(ERR_LIB_DSA,0,0), "dsa routines"}, 145 {ERR_PACK(ERR_LIB_X509,0,0), "x509 certificate routines"}, 146 {ERR_PACK(ERR_LIB_ASN1,0,0), "asn1 encoding routines"}, 147 {ERR_PACK(ERR_LIB_CONF,0,0), "configuration file routines"}, 148 {ERR_PACK(ERR_LIB_CRYPTO,0,0), "common libcrypto routines"}, 149 {ERR_PACK(ERR_LIB_EC,0,0), "elliptic curve routines"}, 150 {ERR_PACK(ERR_LIB_SSL,0,0), "SSL routines"}, 151 {ERR_PACK(ERR_LIB_BIO,0,0), "BIO routines"}, 152 {ERR_PACK(ERR_LIB_PKCS7,0,0), "PKCS7 routines"}, 153 {ERR_PACK(ERR_LIB_X509V3,0,0), "X509 V3 routines"}, 154 {ERR_PACK(ERR_LIB_PKCS12,0,0), "PKCS12 routines"}, 155 {ERR_PACK(ERR_LIB_RAND,0,0), "random number generator"}, 156 {ERR_PACK(ERR_LIB_DSO,0,0), "DSO support routines"}, 157 {ERR_PACK(ERR_LIB_TS,0,0), "time stamp routines"}, 158 {ERR_PACK(ERR_LIB_ENGINE,0,0), "engine routines"}, 159 {ERR_PACK(ERR_LIB_OCSP,0,0), "OCSP routines"}, 160 {ERR_PACK(ERR_LIB_FIPS,0,0), "FIPS routines"}, 161 {ERR_PACK(ERR_LIB_CMS,0,0), "CMS routines"}, 162 {ERR_PACK(ERR_LIB_HMAC,0,0), "HMAC routines"}, 163 {ERR_PACK(ERR_LIB_GOST,0,0), "GOST routines"}, 164 {0, NULL}, 165 }; 166 167 static ERR_STRING_DATA ERR_str_functs[] = { 168 {ERR_PACK(0,SYS_F_FOPEN, 0), "fopen"}, 169 {ERR_PACK(0,SYS_F_CONNECT, 0), "connect"}, 170 {ERR_PACK(0,SYS_F_GETSERVBYNAME, 0), "getservbyname"}, 171 {ERR_PACK(0,SYS_F_SOCKET, 0), "socket"}, 172 {ERR_PACK(0,SYS_F_IOCTLSOCKET, 0), "ioctl"}, 173 {ERR_PACK(0,SYS_F_BIND, 0), "bind"}, 174 {ERR_PACK(0,SYS_F_LISTEN, 0), "listen"}, 175 {ERR_PACK(0,SYS_F_ACCEPT, 0), "accept"}, 176 {ERR_PACK(0,SYS_F_OPENDIR, 0), "opendir"}, 177 {ERR_PACK(0,SYS_F_FREAD, 0), "fread"}, 178 {0, NULL}, 179 }; 180 181 static ERR_STRING_DATA ERR_str_reasons[] = { 182 {ERR_R_SYS_LIB, "system lib"}, 183 {ERR_R_BN_LIB, "BN lib"}, 184 {ERR_R_RSA_LIB, "RSA lib"}, 185 {ERR_R_DH_LIB, "DH lib"}, 186 {ERR_R_EVP_LIB, "EVP lib"}, 187 {ERR_R_BUF_LIB, "BUF lib"}, 188 {ERR_R_OBJ_LIB, "OBJ lib"}, 189 {ERR_R_PEM_LIB, "PEM lib"}, 190 {ERR_R_DSA_LIB, "DSA lib"}, 191 {ERR_R_X509_LIB, "X509 lib"}, 192 {ERR_R_ASN1_LIB, "ASN1 lib"}, 193 {ERR_R_CONF_LIB, "CONF lib"}, 194 {ERR_R_CRYPTO_LIB, "CRYPTO lib"}, 195 {ERR_R_EC_LIB, "EC lib"}, 196 {ERR_R_SSL_LIB, "SSL lib"}, 197 {ERR_R_BIO_LIB, "BIO lib"}, 198 {ERR_R_PKCS7_LIB, "PKCS7 lib"}, 199 {ERR_R_X509V3_LIB, "X509V3 lib"}, 200 {ERR_R_PKCS12_LIB, "PKCS12 lib"}, 201 {ERR_R_RAND_LIB, "RAND lib"}, 202 {ERR_R_DSO_LIB, "DSO lib"}, 203 {ERR_R_ENGINE_LIB, "ENGINE lib"}, 204 {ERR_R_OCSP_LIB, "OCSP lib"}, 205 {ERR_R_TS_LIB, "TS lib"}, 206 207 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"}, 208 {ERR_R_BAD_ASN1_OBJECT_HEADER, "bad asn1 object header"}, 209 {ERR_R_BAD_GET_ASN1_OBJECT_CALL, "bad get asn1 object call"}, 210 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE, "expecting an asn1 sequence"}, 211 {ERR_R_ASN1_LENGTH_MISMATCH, "asn1 length mismatch"}, 212 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"}, 213 214 {ERR_R_FATAL, "fatal"}, 215 {ERR_R_MALLOC_FAILURE, "malloc failure"}, 216 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, "called a function you should not call"}, 217 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"}, 218 {ERR_R_INTERNAL_ERROR, "internal error"}, 219 {ERR_R_DISABLED , "called a function that was disabled at compile-time"}, 220 {ERR_R_INIT_FAIL, "initialization failure"}, 221 222 {0, NULL}, 223 }; 224 #endif 225 226 227 /* Define the predeclared (but externally opaque) "ERR_FNS" type */ 228 struct st_ERR_FNS { 229 /* Works on the "error_hash" string table */ 230 LHASH_OF(ERR_STRING_DATA) *(*cb_err_get)(int create); 231 void (*cb_err_del)(void); 232 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 233 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 234 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 235 /* Works on the "thread_hash" error-state table */ 236 LHASH_OF(ERR_STATE) *(*cb_thread_get)(int create); 237 void (*cb_thread_release)(LHASH_OF(ERR_STATE) **hash); 238 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 239 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 240 void (*cb_thread_del_item)(const ERR_STATE *); 241 /* Returns the next available error "library" numbers */ 242 int (*cb_get_next_lib)(void); 243 }; 244 245 /* Predeclarations of the "err_defaults" functions */ 246 static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create); 247 static void int_err_del(void); 248 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 249 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 250 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 251 static LHASH_OF(ERR_STATE) *int_thread_get(int create); 252 static void int_thread_release(LHASH_OF(ERR_STATE) **hash); 253 static ERR_STATE *int_thread_get_item(const ERR_STATE *); 254 static ERR_STATE *int_thread_set_item(ERR_STATE *); 255 static void int_thread_del_item(const ERR_STATE *); 256 static int int_err_get_next_lib(void); 257 258 /* The static ERR_FNS table using these defaults functions */ 259 static const ERR_FNS err_defaults = { 260 int_err_get, 261 int_err_del, 262 int_err_get_item, 263 int_err_set_item, 264 int_err_del_item, 265 int_thread_get, 266 int_thread_release, 267 int_thread_get_item, 268 int_thread_set_item, 269 int_thread_del_item, 270 int_err_get_next_lib 271 }; 272 273 /* The replacable table of ERR_FNS functions we use at run-time */ 274 static const ERR_FNS *err_fns = NULL; 275 276 /* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 277 #define ERRFN(a) err_fns->cb_##a 278 279 /* The internal state used by "err_defaults" - as such, the setting, reading, 280 * creating, and deleting of this data should only be permitted via the 281 * "err_defaults" functions. This way, a linked module can completely defer all 282 * ERR state operation (together with requisite locking) to the implementations 283 * and state in the loading application. */ 284 static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; 285 static LHASH_OF(ERR_STATE) *int_thread_hash = NULL; 286 static int int_thread_hash_references = 0; 287 static int int_err_library_number = ERR_LIB_USER; 288 289 static pthread_t err_init_thread; 290 291 /* Internal function that checks whether "err_fns" is set and if not, sets it to 292 * the defaults. */ 293 static void 294 err_fns_check(void) 295 { 296 if (err_fns) 297 return; 298 299 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 300 if (!err_fns) 301 err_fns = &err_defaults; 302 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 303 } 304 305 /* These are the callbacks provided to "lh_new()" when creating the LHASH tables 306 * internal to the "err_defaults" implementation. */ 307 308 static unsigned long get_error_values(int inc, int top, const char **file, 309 int *line, const char **data, int *flags); 310 311 /* The internal functions used in the "err_defaults" implementation */ 312 313 static unsigned long 314 err_string_data_hash(const ERR_STRING_DATA *a) 315 { 316 unsigned long ret, l; 317 318 l = a->error; 319 ret = l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 320 return (ret^ret % 19*13); 321 } 322 static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA) 323 324 static int 325 err_string_data_cmp(const ERR_STRING_DATA *a, const ERR_STRING_DATA *b) 326 { 327 return (int)(a->error - b->error); 328 } 329 static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA) 330 331 static 332 LHASH_OF(ERR_STRING_DATA) *int_err_get(int create) 333 { 334 LHASH_OF(ERR_STRING_DATA) *ret = NULL; 335 336 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 337 if (!int_error_hash && create) { 338 CRYPTO_push_info("int_err_get (err.c)"); 339 int_error_hash = lh_ERR_STRING_DATA_new(); 340 CRYPTO_pop_info(); 341 } 342 if (int_error_hash) 343 ret = int_error_hash; 344 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 345 346 return ret; 347 } 348 349 static void 350 int_err_del(void) 351 { 352 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 353 if (int_error_hash) { 354 lh_ERR_STRING_DATA_free(int_error_hash); 355 int_error_hash = NULL; 356 } 357 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 358 } 359 360 static ERR_STRING_DATA * 361 int_err_get_item(const ERR_STRING_DATA *d) 362 { 363 ERR_STRING_DATA *p; 364 LHASH_OF(ERR_STRING_DATA) *hash; 365 366 err_fns_check(); 367 hash = ERRFN(err_get)(0); 368 if (!hash) 369 return NULL; 370 371 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 372 p = lh_ERR_STRING_DATA_retrieve(hash, d); 373 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 374 375 return p; 376 } 377 378 static ERR_STRING_DATA * 379 int_err_set_item(ERR_STRING_DATA *d) 380 { 381 ERR_STRING_DATA *p; 382 LHASH_OF(ERR_STRING_DATA) *hash; 383 384 err_fns_check(); 385 hash = ERRFN(err_get)(1); 386 if (!hash) 387 return NULL; 388 389 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 390 p = lh_ERR_STRING_DATA_insert(hash, d); 391 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 392 393 return p; 394 } 395 396 static ERR_STRING_DATA * 397 int_err_del_item(ERR_STRING_DATA *d) 398 { 399 ERR_STRING_DATA *p; 400 LHASH_OF(ERR_STRING_DATA) *hash; 401 402 err_fns_check(); 403 hash = ERRFN(err_get)(0); 404 if (!hash) 405 return NULL; 406 407 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 408 p = lh_ERR_STRING_DATA_delete(hash, d); 409 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 410 411 return p; 412 } 413 414 static unsigned long 415 err_state_hash(const ERR_STATE *a) 416 { 417 return CRYPTO_THREADID_hash(&a->tid) * 13; 418 } 419 static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) 420 421 static int 422 err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) 423 { 424 return CRYPTO_THREADID_cmp(&a->tid, &b->tid); 425 } 426 static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) 427 428 static 429 LHASH_OF(ERR_STATE) *int_thread_get(int create) 430 { 431 LHASH_OF(ERR_STATE) *ret = NULL; 432 433 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 434 if (!int_thread_hash && create) { 435 CRYPTO_push_info("int_thread_get (err.c)"); 436 int_thread_hash = lh_ERR_STATE_new(); 437 CRYPTO_pop_info(); 438 } 439 if (int_thread_hash) { 440 int_thread_hash_references++; 441 ret = int_thread_hash; 442 } 443 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 444 return ret; 445 } 446 447 static void 448 int_thread_release(LHASH_OF(ERR_STATE) **hash) 449 { 450 int i; 451 452 if (hash == NULL || *hash == NULL) 453 return; 454 455 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 456 if (i > 0) 457 return; 458 459 *hash = NULL; 460 } 461 462 static ERR_STATE * 463 int_thread_get_item(const ERR_STATE *d) 464 { 465 ERR_STATE *p; 466 LHASH_OF(ERR_STATE) *hash; 467 468 err_fns_check(); 469 hash = ERRFN(thread_get)(0); 470 if (!hash) 471 return NULL; 472 473 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 474 p = lh_ERR_STATE_retrieve(hash, d); 475 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 476 477 ERRFN(thread_release)(&hash); 478 return p; 479 } 480 481 static ERR_STATE * 482 int_thread_set_item(ERR_STATE *d) 483 { 484 ERR_STATE *p; 485 LHASH_OF(ERR_STATE) *hash; 486 487 err_fns_check(); 488 hash = ERRFN(thread_get)(1); 489 if (!hash) 490 return NULL; 491 492 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 493 p = lh_ERR_STATE_insert(hash, d); 494 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 495 496 ERRFN(thread_release)(&hash); 497 return p; 498 } 499 500 static void 501 int_thread_del_item(const ERR_STATE *d) 502 { 503 ERR_STATE *p; 504 LHASH_OF(ERR_STATE) *hash; 505 506 err_fns_check(); 507 hash = ERRFN(thread_get)(0); 508 if (!hash) 509 return; 510 511 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 512 p = lh_ERR_STATE_delete(hash, d); 513 /* make sure we don't leak memory */ 514 if (int_thread_hash_references == 1 && 515 int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) { 516 lh_ERR_STATE_free(int_thread_hash); 517 int_thread_hash = NULL; 518 } 519 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 520 521 ERRFN(thread_release)(&hash); 522 if (p) 523 ERR_STATE_free(p); 524 } 525 526 static int 527 int_err_get_next_lib(void) 528 { 529 int ret; 530 531 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 532 ret = int_err_library_number++; 533 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 534 535 return ret; 536 } 537 538 539 #ifndef OPENSSL_NO_ERR 540 #define NUM_SYS_STR_REASONS 127 541 #define LEN_SYS_STR_REASON 32 542 543 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 544 /* SYS_str_reasons is filled with copies of strerror() results at 545 * initialization. 546 * 'errno' values up to 127 should cover all usual errors, 547 * others will be displayed numerically by ERR_error_string. 548 * It is crucial that we have something for each reason code 549 * that occurs in ERR_str_reasons, or bogus reason strings 550 * will be returned for SYSerror(which always gets an errno 551 * value and never one of those 'standard' reason codes. */ 552 553 static void 554 build_SYS_str_reasons(void) 555 { 556 /* malloc cannot be used here, use static storage instead */ 557 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 558 int i; 559 static int init = 1; 560 int save_errno; 561 562 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 563 if (!init) { 564 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 565 return; 566 } 567 568 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 569 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 570 if (!init) { 571 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 572 return; 573 } 574 575 /* strerror(3) will set errno to EINVAL when i is an unknown errno. */ 576 save_errno = errno; 577 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { 578 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 579 580 str->error = (unsigned long)i; 581 if (str->string == NULL) { 582 char (*dest)[LEN_SYS_STR_REASON] = 583 &(strerror_tab[i - 1]); 584 const char *src = strerror(i); 585 if (src != NULL) { 586 strlcpy(*dest, src, sizeof *dest); 587 str->string = *dest; 588 } 589 } 590 if (str->string == NULL) 591 str->string = "unknown"; 592 } 593 errno = save_errno; 594 595 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 596 * as required by ERR_load_strings. */ 597 598 init = 0; 599 600 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 601 } 602 #endif 603 604 #define err_clear_data(p,i) \ 605 do { \ 606 if (((p)->err_data[i] != NULL) && \ 607 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) { \ 608 free((p)->err_data[i]); \ 609 (p)->err_data[i] = NULL; \ 610 } \ 611 (p)->err_data_flags[i] = 0; \ 612 } while(0) 613 614 #define err_clear(p,i) \ 615 do { \ 616 (p)->err_flags[i] = 0; \ 617 (p)->err_buffer[i] = 0; \ 618 err_clear_data(p, i); \ 619 (p)->err_file[i] = NULL; \ 620 (p)->err_line[i] = -1; \ 621 } while(0) 622 623 static void 624 ERR_STATE_free(ERR_STATE *s) 625 { 626 int i; 627 628 if (s == NULL) 629 return; 630 631 for (i = 0; i < ERR_NUM_ERRORS; i++) { 632 err_clear_data(s, i); 633 } 634 free(s); 635 } 636 637 void 638 ERR_load_ERR_strings_internal(void) 639 { 640 err_init_thread = pthread_self(); 641 err_fns_check(); 642 #ifndef OPENSSL_NO_ERR 643 err_load_strings(0, ERR_str_libraries); 644 err_load_strings(0, ERR_str_reasons); 645 err_load_strings(ERR_LIB_SYS, ERR_str_functs); 646 build_SYS_str_reasons(); 647 err_load_strings(ERR_LIB_SYS, SYS_str_reasons); 648 #endif 649 } 650 651 652 void 653 ERR_load_ERR_strings(void) 654 { 655 static pthread_once_t once = PTHREAD_ONCE_INIT; 656 657 if (pthread_equal(pthread_self(), err_init_thread)) 658 return; /* don't recurse */ 659 660 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 661 (void) OPENSSL_init_crypto(0, NULL); 662 663 (void) pthread_once(&once, ERR_load_ERR_strings_internal); 664 } 665 LCRYPTO_ALIAS(ERR_load_ERR_strings); 666 667 static void 668 err_load_strings(int lib, ERR_STRING_DATA *str) 669 { 670 while (str->error) { 671 if (lib) 672 str->error |= ERR_PACK(lib, 0, 0); 673 ERRFN(err_set_item)(str); 674 str++; 675 } 676 } 677 678 void 679 ERR_load_strings(int lib, ERR_STRING_DATA *str) 680 { 681 ERR_load_ERR_strings(); 682 err_load_strings(lib, str); 683 } 684 LCRYPTO_ALIAS(ERR_load_strings); 685 686 void 687 ERR_unload_strings(int lib, ERR_STRING_DATA *str) 688 { 689 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 690 (void) OPENSSL_init_crypto(0, NULL); 691 692 while (str->error) { 693 if (lib) 694 str->error |= ERR_PACK(lib, 0, 0); 695 ERRFN(err_del_item)(str); 696 str++; 697 } 698 } 699 LCRYPTO_ALIAS(ERR_unload_strings); 700 701 void 702 ERR_free_strings(void) 703 { 704 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 705 (void) OPENSSL_init_crypto(0, NULL); 706 707 err_fns_check(); 708 ERRFN(err_del)(); 709 } 710 LCRYPTO_ALIAS(ERR_free_strings); 711 712 /********************************************************/ 713 714 void 715 ERR_put_error(int lib, int func, int reason, const char *file, int line) 716 { 717 ERR_STATE *es; 718 int save_errno = errno; 719 720 es = ERR_get_state(); 721 722 es->top = (es->top + 1) % ERR_NUM_ERRORS; 723 if (es->top == es->bottom) 724 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; 725 es->err_flags[es->top] = 0; 726 es->err_buffer[es->top] = ERR_PACK(lib, func, reason); 727 es->err_file[es->top] = file; 728 es->err_line[es->top] = line; 729 err_clear_data(es, es->top); 730 errno = save_errno; 731 } 732 LCRYPTO_ALIAS(ERR_put_error); 733 734 void 735 ERR_clear_error(void) 736 { 737 int i; 738 ERR_STATE *es; 739 740 es = ERR_get_state(); 741 742 for (i = 0; i < ERR_NUM_ERRORS; i++) { 743 err_clear(es, i); 744 } 745 es->top = es->bottom = 0; 746 } 747 LCRYPTO_ALIAS(ERR_clear_error); 748 749 750 unsigned long 751 ERR_get_error(void) 752 { 753 return (get_error_values(1, 0, NULL, NULL, NULL, NULL)); 754 } 755 LCRYPTO_ALIAS(ERR_get_error); 756 757 unsigned long 758 ERR_get_error_line(const char **file, int *line) 759 { 760 return (get_error_values(1, 0, file, line, NULL, NULL)); 761 } 762 LCRYPTO_ALIAS(ERR_get_error_line); 763 764 unsigned long 765 ERR_get_error_line_data(const char **file, int *line, 766 const char **data, int *flags) 767 { 768 return (get_error_values(1, 0, file, line, data, flags)); 769 } 770 LCRYPTO_ALIAS(ERR_get_error_line_data); 771 772 773 unsigned long 774 ERR_peek_error(void) 775 { 776 return (get_error_values(0, 0, NULL, NULL, NULL, NULL)); 777 } 778 LCRYPTO_ALIAS(ERR_peek_error); 779 780 unsigned long 781 ERR_peek_error_line(const char **file, int *line) 782 { 783 return (get_error_values(0, 0, file, line, NULL, NULL)); 784 } 785 LCRYPTO_ALIAS(ERR_peek_error_line); 786 787 unsigned long 788 ERR_peek_error_line_data(const char **file, int *line, 789 const char **data, int *flags) 790 { 791 return (get_error_values(0, 0, file, line, data, flags)); 792 } 793 LCRYPTO_ALIAS(ERR_peek_error_line_data); 794 795 unsigned long 796 ERR_peek_last_error(void) 797 { 798 return (get_error_values(0, 1, NULL, NULL, NULL, NULL)); 799 } 800 LCRYPTO_ALIAS(ERR_peek_last_error); 801 802 unsigned long 803 ERR_peek_last_error_line(const char **file, int *line) 804 { 805 return (get_error_values(0, 1, file, line, NULL, NULL)); 806 } 807 LCRYPTO_ALIAS(ERR_peek_last_error_line); 808 809 unsigned long 810 ERR_peek_last_error_line_data(const char **file, int *line, 811 const char **data, int *flags) 812 { 813 return (get_error_values(0, 1, file, line, data, flags)); 814 } 815 LCRYPTO_ALIAS(ERR_peek_last_error_line_data); 816 817 static unsigned long 818 get_error_values(int inc, int top, const char **file, int *line, 819 const char **data, int *flags) 820 { 821 int i = 0; 822 ERR_STATE *es; 823 unsigned long ret; 824 825 es = ERR_get_state(); 826 827 if (inc && top) { 828 if (file) 829 *file = ""; 830 if (line) 831 *line = 0; 832 if (data) 833 *data = ""; 834 if (flags) 835 *flags = 0; 836 837 return ERR_R_INTERNAL_ERROR; 838 } 839 840 if (es->bottom == es->top) 841 return 0; 842 if (top) 843 i = es->top; /* last error */ 844 else 845 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */ 846 847 ret = es->err_buffer[i]; 848 if (inc) { 849 es->bottom = i; 850 es->err_buffer[i] = 0; 851 } 852 853 if ((file != NULL) && (line != NULL)) { 854 if (es->err_file[i] == NULL) { 855 *file = "NA"; 856 if (line != NULL) 857 *line = 0; 858 } else { 859 *file = es->err_file[i]; 860 if (line != NULL) 861 *line = es->err_line[i]; 862 } 863 } 864 865 if (data == NULL) { 866 if (inc) { 867 err_clear_data(es, i); 868 } 869 } else { 870 if (es->err_data[i] == NULL) { 871 *data = ""; 872 if (flags != NULL) 873 *flags = 0; 874 } else { 875 *data = es->err_data[i]; 876 if (flags != NULL) 877 *flags = es->err_data_flags[i]; 878 } 879 } 880 return ret; 881 } 882 883 void 884 ERR_error_string_n(unsigned long e, char *buf, size_t len) 885 { 886 char lsbuf[30], fsbuf[30], rsbuf[30]; 887 const char *ls, *fs, *rs; 888 int l, f, r, ret; 889 890 l = ERR_GET_LIB(e); 891 f = ERR_GET_FUNC(e); 892 r = ERR_GET_REASON(e); 893 894 ls = ERR_lib_error_string(e); 895 fs = ERR_func_error_string(e); 896 rs = ERR_reason_error_string(e); 897 898 if (ls == NULL) { 899 (void) snprintf(lsbuf, sizeof(lsbuf), "lib(%d)", l); 900 ls = lsbuf; 901 } 902 if (fs == NULL) { 903 (void) snprintf(fsbuf, sizeof(fsbuf), "func(%d)", f); 904 fs = fsbuf; 905 } 906 if (rs == NULL) { 907 (void) snprintf(rsbuf, sizeof(rsbuf), "reason(%d)", r); 908 rs = rsbuf; 909 } 910 911 ret = snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs); 912 if (ret == -1) 913 return; /* can't happen, and can't do better if it does */ 914 if (ret >= len) { 915 /* output may be truncated; make sure we always have 5 916 * colon-separated fields, i.e. 4 colons ... */ 917 #define NUM_COLONS 4 918 if (len > NUM_COLONS) /* ... if possible */ 919 { 920 int i; 921 char *s = buf; 922 923 for (i = 0; i < NUM_COLONS; i++) { 924 char *colon = strchr(s, ':'); 925 if (colon == NULL || 926 colon > &buf[len - 1] - NUM_COLONS + i) { 927 /* set colon no. i at last possible position 928 * (buf[len-1] is the terminating 0)*/ 929 colon = &buf[len - 1] - NUM_COLONS + i; 930 *colon = ':'; 931 } 932 s = colon + 1; 933 } 934 } 935 } 936 } 937 LCRYPTO_ALIAS(ERR_error_string_n); 938 939 /* BAD for multi-threading: uses a local buffer if ret == NULL */ 940 /* ERR_error_string_n should be used instead for ret != NULL 941 * as ERR_error_string cannot know how large the buffer is */ 942 char * 943 ERR_error_string(unsigned long e, char *ret) 944 { 945 static char buf[256]; 946 947 if (ret == NULL) 948 ret = buf; 949 ERR_error_string_n(e, ret, 256); 950 951 return ret; 952 } 953 LCRYPTO_ALIAS(ERR_error_string); 954 955 const char * 956 ERR_lib_error_string(unsigned long e) 957 { 958 ERR_STRING_DATA d, *p; 959 unsigned long l; 960 961 if (!OPENSSL_init_crypto(0, NULL)) 962 return NULL; 963 964 err_fns_check(); 965 l = ERR_GET_LIB(e); 966 d.error = ERR_PACK(l, 0, 0); 967 p = ERRFN(err_get_item)(&d); 968 return ((p == NULL) ? NULL : p->string); 969 } 970 LCRYPTO_ALIAS(ERR_lib_error_string); 971 972 const char * 973 ERR_func_error_string(unsigned long e) 974 { 975 ERR_STRING_DATA d, *p; 976 unsigned long l, f; 977 978 err_fns_check(); 979 l = ERR_GET_LIB(e); 980 f = ERR_GET_FUNC(e); 981 d.error = ERR_PACK(l, f, 0); 982 p = ERRFN(err_get_item)(&d); 983 return ((p == NULL) ? NULL : p->string); 984 } 985 LCRYPTO_ALIAS(ERR_func_error_string); 986 987 const char * 988 ERR_reason_error_string(unsigned long e) 989 { 990 ERR_STRING_DATA d, *p = NULL; 991 unsigned long l, r; 992 993 err_fns_check(); 994 l = ERR_GET_LIB(e); 995 r = ERR_GET_REASON(e); 996 d.error = ERR_PACK(l, 0, r); 997 p = ERRFN(err_get_item)(&d); 998 if (!p) { 999 d.error = ERR_PACK(0, 0, r); 1000 p = ERRFN(err_get_item)(&d); 1001 } 1002 return ((p == NULL) ? NULL : p->string); 1003 } 1004 LCRYPTO_ALIAS(ERR_reason_error_string); 1005 1006 void 1007 ERR_remove_thread_state(const CRYPTO_THREADID *id) 1008 { 1009 ERR_STATE tmp; 1010 1011 if (id) 1012 CRYPTO_THREADID_cpy(&tmp.tid, id); 1013 else 1014 CRYPTO_THREADID_current(&tmp.tid); 1015 err_fns_check(); 1016 /* thread_del_item automatically destroys the LHASH if the number of 1017 * items reaches zero. */ 1018 ERRFN(thread_del_item)(&tmp); 1019 } 1020 LCRYPTO_ALIAS(ERR_remove_thread_state); 1021 1022 void 1023 ERR_remove_state(unsigned long pid) 1024 { 1025 ERR_remove_thread_state(NULL); 1026 } 1027 LCRYPTO_ALIAS(ERR_remove_state); 1028 1029 ERR_STATE * 1030 ERR_get_state(void) 1031 { 1032 static ERR_STATE fallback; 1033 ERR_STATE *ret, tmp, *tmpp = NULL; 1034 int i; 1035 CRYPTO_THREADID tid; 1036 1037 err_fns_check(); 1038 CRYPTO_THREADID_current(&tid); 1039 CRYPTO_THREADID_cpy(&tmp.tid, &tid); 1040 ret = ERRFN(thread_get_item)(&tmp); 1041 1042 /* ret == the error state, if NULL, make a new one */ 1043 if (ret == NULL) { 1044 ret = malloc(sizeof(ERR_STATE)); 1045 if (ret == NULL) 1046 return (&fallback); 1047 CRYPTO_THREADID_cpy(&ret->tid, &tid); 1048 ret->top = 0; 1049 ret->bottom = 0; 1050 for (i = 0; i < ERR_NUM_ERRORS; i++) { 1051 ret->err_data[i] = NULL; 1052 ret->err_data_flags[i] = 0; 1053 } 1054 tmpp = ERRFN(thread_set_item)(ret); 1055 /* To check if insertion failed, do a get. */ 1056 if (ERRFN(thread_get_item)(ret) != ret) { 1057 ERR_STATE_free(ret); /* could not insert it */ 1058 return (&fallback); 1059 } 1060 /* If a race occurred in this function and we came second, tmpp 1061 * is the first one that we just replaced. */ 1062 if (tmpp) 1063 ERR_STATE_free(tmpp); 1064 } 1065 return ret; 1066 } 1067 LCRYPTO_ALIAS(ERR_get_state); 1068 1069 int 1070 ERR_get_next_error_library(void) 1071 { 1072 err_fns_check(); 1073 return ERRFN(get_next_lib)(); 1074 } 1075 LCRYPTO_ALIAS(ERR_get_next_error_library); 1076 1077 void 1078 ERR_set_error_data(char *data, int flags) 1079 { 1080 ERR_STATE *es; 1081 int i; 1082 1083 es = ERR_get_state(); 1084 1085 i = es->top; 1086 if (i == 0) 1087 i = ERR_NUM_ERRORS - 1; 1088 1089 err_clear_data(es, i); 1090 es->err_data[i] = data; 1091 es->err_data_flags[i] = flags; 1092 } 1093 LCRYPTO_ALIAS(ERR_set_error_data); 1094 1095 void 1096 ERR_asprintf_error_data(char * format, ...) 1097 { 1098 char *errbuf = NULL; 1099 va_list ap; 1100 int r; 1101 1102 va_start(ap, format); 1103 r = vasprintf(&errbuf, format, ap); 1104 va_end(ap); 1105 if (r == -1) 1106 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1107 else 1108 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1109 } 1110 LCRYPTO_ALIAS(ERR_asprintf_error_data); 1111 1112 void 1113 ERR_add_error_vdata(int num, va_list args) 1114 { 1115 char format[129]; 1116 char *errbuf; 1117 int i; 1118 1119 format[0] = '\0'; 1120 for (i = 0; i < num; i++) { 1121 if (strlcat(format, "%s", sizeof(format)) >= sizeof(format)) { 1122 ERR_set_error_data("too many errors", ERR_TXT_STRING); 1123 return; 1124 } 1125 } 1126 if (vasprintf(&errbuf, format, args) == -1) 1127 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1128 else 1129 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1130 } 1131 1132 void 1133 ERR_add_error_data(int num, ...) 1134 { 1135 va_list args; 1136 va_start(args, num); 1137 ERR_add_error_vdata(num, args); 1138 va_end(args); 1139 } 1140 1141 int 1142 ERR_set_mark(void) 1143 { 1144 ERR_STATE *es; 1145 1146 es = ERR_get_state(); 1147 1148 if (es->bottom == es->top) 1149 return 0; 1150 es->err_flags[es->top] |= ERR_FLAG_MARK; 1151 return 1; 1152 } 1153 LCRYPTO_ALIAS(ERR_set_mark); 1154 1155 int 1156 ERR_pop_to_mark(void) 1157 { 1158 ERR_STATE *es; 1159 1160 es = ERR_get_state(); 1161 1162 while (es->bottom != es->top && 1163 (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { 1164 err_clear(es, es->top); 1165 es->top -= 1; 1166 if (es->top == -1) 1167 es->top = ERR_NUM_ERRORS - 1; 1168 } 1169 1170 if (es->bottom == es->top) 1171 return 0; 1172 es->err_flags[es->top]&=~ERR_FLAG_MARK; 1173 return 1; 1174 } 1175 LCRYPTO_ALIAS(ERR_pop_to_mark); 1176 1177 void 1178 err_clear_last_constant_time(int clear) 1179 { 1180 ERR_STATE *es; 1181 int top; 1182 1183 es = ERR_get_state(); 1184 if (es == NULL) 1185 return; 1186 1187 top = es->top; 1188 1189 es->err_flags[top] &= ~(0 - clear); 1190 es->err_buffer[top] &= ~(0UL - clear); 1191 es->err_file[top] = (const char *)((uintptr_t)es->err_file[top] & 1192 ~((uintptr_t)0 - clear)); 1193 es->err_line[top] |= 0 - clear; 1194 1195 es->top = (top + ERR_NUM_ERRORS - clear) % ERR_NUM_ERRORS; 1196 } 1197