1 /* $OpenBSD: err.c,v 1.49 2022/08/29 06:49:24 jsing 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 static void err_load_strings(int lib, ERR_STRING_DATA *str); 129 130 static void ERR_STATE_free(ERR_STATE *s); 131 #ifndef OPENSSL_NO_ERR 132 static ERR_STRING_DATA ERR_str_libraries[] = { 133 {ERR_PACK(ERR_LIB_NONE,0,0), "unknown library"}, 134 {ERR_PACK(ERR_LIB_SYS,0,0), "system library"}, 135 {ERR_PACK(ERR_LIB_BN,0,0), "bignum routines"}, 136 {ERR_PACK(ERR_LIB_RSA,0,0), "rsa routines"}, 137 {ERR_PACK(ERR_LIB_DH,0,0), "Diffie-Hellman routines"}, 138 {ERR_PACK(ERR_LIB_EVP,0,0), "digital envelope routines"}, 139 {ERR_PACK(ERR_LIB_BUF,0,0), "memory buffer routines"}, 140 {ERR_PACK(ERR_LIB_OBJ,0,0), "object identifier routines"}, 141 {ERR_PACK(ERR_LIB_PEM,0,0), "PEM routines"}, 142 {ERR_PACK(ERR_LIB_DSA,0,0), "dsa routines"}, 143 {ERR_PACK(ERR_LIB_X509,0,0), "x509 certificate routines"}, 144 {ERR_PACK(ERR_LIB_ASN1,0,0), "asn1 encoding routines"}, 145 {ERR_PACK(ERR_LIB_CONF,0,0), "configuration file routines"}, 146 {ERR_PACK(ERR_LIB_CRYPTO,0,0), "common libcrypto routines"}, 147 {ERR_PACK(ERR_LIB_EC,0,0), "elliptic curve routines"}, 148 {ERR_PACK(ERR_LIB_SSL,0,0), "SSL routines"}, 149 {ERR_PACK(ERR_LIB_BIO,0,0), "BIO routines"}, 150 {ERR_PACK(ERR_LIB_PKCS7,0,0), "PKCS7 routines"}, 151 {ERR_PACK(ERR_LIB_X509V3,0,0), "X509 V3 routines"}, 152 {ERR_PACK(ERR_LIB_PKCS12,0,0), "PKCS12 routines"}, 153 {ERR_PACK(ERR_LIB_RAND,0,0), "random number generator"}, 154 {ERR_PACK(ERR_LIB_DSO,0,0), "DSO support routines"}, 155 {ERR_PACK(ERR_LIB_TS,0,0), "time stamp routines"}, 156 {ERR_PACK(ERR_LIB_ENGINE,0,0), "engine routines"}, 157 {ERR_PACK(ERR_LIB_OCSP,0,0), "OCSP routines"}, 158 {ERR_PACK(ERR_LIB_FIPS,0,0), "FIPS routines"}, 159 {ERR_PACK(ERR_LIB_CMS,0,0), "CMS routines"}, 160 {ERR_PACK(ERR_LIB_HMAC,0,0), "HMAC routines"}, 161 {ERR_PACK(ERR_LIB_GOST,0,0), "GOST routines"}, 162 {0, NULL}, 163 }; 164 165 static ERR_STRING_DATA ERR_str_functs[] = { 166 {ERR_PACK(0,SYS_F_FOPEN, 0), "fopen"}, 167 {ERR_PACK(0,SYS_F_CONNECT, 0), "connect"}, 168 {ERR_PACK(0,SYS_F_GETSERVBYNAME, 0), "getservbyname"}, 169 {ERR_PACK(0,SYS_F_SOCKET, 0), "socket"}, 170 {ERR_PACK(0,SYS_F_IOCTLSOCKET, 0), "ioctl"}, 171 {ERR_PACK(0,SYS_F_BIND, 0), "bind"}, 172 {ERR_PACK(0,SYS_F_LISTEN, 0), "listen"}, 173 {ERR_PACK(0,SYS_F_ACCEPT, 0), "accept"}, 174 {ERR_PACK(0,SYS_F_OPENDIR, 0), "opendir"}, 175 {ERR_PACK(0,SYS_F_FREAD, 0), "fread"}, 176 {0, NULL}, 177 }; 178 179 static ERR_STRING_DATA ERR_str_reasons[] = { 180 {ERR_R_SYS_LIB, "system lib"}, 181 {ERR_R_BN_LIB, "BN lib"}, 182 {ERR_R_RSA_LIB, "RSA lib"}, 183 {ERR_R_DH_LIB, "DH lib"}, 184 {ERR_R_EVP_LIB, "EVP lib"}, 185 {ERR_R_BUF_LIB, "BUF lib"}, 186 {ERR_R_OBJ_LIB, "OBJ lib"}, 187 {ERR_R_PEM_LIB, "PEM lib"}, 188 {ERR_R_DSA_LIB, "DSA lib"}, 189 {ERR_R_X509_LIB, "X509 lib"}, 190 {ERR_R_ASN1_LIB, "ASN1 lib"}, 191 {ERR_R_CONF_LIB, "CONF lib"}, 192 {ERR_R_CRYPTO_LIB, "CRYPTO lib"}, 193 {ERR_R_EC_LIB, "EC lib"}, 194 {ERR_R_SSL_LIB, "SSL lib"}, 195 {ERR_R_BIO_LIB, "BIO lib"}, 196 {ERR_R_PKCS7_LIB, "PKCS7 lib"}, 197 {ERR_R_X509V3_LIB, "X509V3 lib"}, 198 {ERR_R_PKCS12_LIB, "PKCS12 lib"}, 199 {ERR_R_RAND_LIB, "RAND lib"}, 200 {ERR_R_DSO_LIB, "DSO lib"}, 201 {ERR_R_ENGINE_LIB, "ENGINE lib"}, 202 {ERR_R_OCSP_LIB, "OCSP lib"}, 203 {ERR_R_TS_LIB, "TS lib"}, 204 205 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"}, 206 {ERR_R_BAD_ASN1_OBJECT_HEADER, "bad asn1 object header"}, 207 {ERR_R_BAD_GET_ASN1_OBJECT_CALL, "bad get asn1 object call"}, 208 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE, "expecting an asn1 sequence"}, 209 {ERR_R_ASN1_LENGTH_MISMATCH, "asn1 length mismatch"}, 210 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"}, 211 212 {ERR_R_FATAL, "fatal"}, 213 {ERR_R_MALLOC_FAILURE, "malloc failure"}, 214 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, "called a function you should not call"}, 215 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"}, 216 {ERR_R_INTERNAL_ERROR, "internal error"}, 217 {ERR_R_DISABLED , "called a function that was disabled at compile-time"}, 218 {ERR_R_INIT_FAIL, "initialization failure"}, 219 220 {0, NULL}, 221 }; 222 #endif 223 224 225 /* Define the predeclared (but externally opaque) "ERR_FNS" type */ 226 struct st_ERR_FNS { 227 /* Works on the "error_hash" string table */ 228 LHASH_OF(ERR_STRING_DATA) *(*cb_err_get)(int create); 229 void (*cb_err_del)(void); 230 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 231 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 232 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 233 /* Works on the "thread_hash" error-state table */ 234 LHASH_OF(ERR_STATE) *(*cb_thread_get)(int create); 235 void (*cb_thread_release)(LHASH_OF(ERR_STATE) **hash); 236 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 237 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 238 void (*cb_thread_del_item)(const ERR_STATE *); 239 /* Returns the next available error "library" numbers */ 240 int (*cb_get_next_lib)(void); 241 }; 242 243 /* Predeclarations of the "err_defaults" functions */ 244 static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create); 245 static void int_err_del(void); 246 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 247 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 248 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 249 static LHASH_OF(ERR_STATE) *int_thread_get(int create); 250 static void int_thread_release(LHASH_OF(ERR_STATE) **hash); 251 static ERR_STATE *int_thread_get_item(const ERR_STATE *); 252 static ERR_STATE *int_thread_set_item(ERR_STATE *); 253 static void int_thread_del_item(const ERR_STATE *); 254 static int int_err_get_next_lib(void); 255 256 /* The static ERR_FNS table using these defaults functions */ 257 static const ERR_FNS err_defaults = { 258 int_err_get, 259 int_err_del, 260 int_err_get_item, 261 int_err_set_item, 262 int_err_del_item, 263 int_thread_get, 264 int_thread_release, 265 int_thread_get_item, 266 int_thread_set_item, 267 int_thread_del_item, 268 int_err_get_next_lib 269 }; 270 271 /* The replacable table of ERR_FNS functions we use at run-time */ 272 static const ERR_FNS *err_fns = NULL; 273 274 /* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 275 #define ERRFN(a) err_fns->cb_##a 276 277 /* The internal state used by "err_defaults" - as such, the setting, reading, 278 * creating, and deleting of this data should only be permitted via the 279 * "err_defaults" functions. This way, a linked module can completely defer all 280 * ERR state operation (together with requisite locking) to the implementations 281 * and state in the loading application. */ 282 static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; 283 static LHASH_OF(ERR_STATE) *int_thread_hash = NULL; 284 static int int_thread_hash_references = 0; 285 static int int_err_library_number = ERR_LIB_USER; 286 287 static pthread_t err_init_thread; 288 289 /* Internal function that checks whether "err_fns" is set and if not, sets it to 290 * the defaults. */ 291 static void 292 err_fns_check(void) 293 { 294 if (err_fns) 295 return; 296 297 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 298 if (!err_fns) 299 err_fns = &err_defaults; 300 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 301 } 302 303 /* API functions to get or set the underlying ERR functions. */ 304 305 const ERR_FNS * 306 ERR_get_implementation(void) 307 { 308 err_fns_check(); 309 return err_fns; 310 } 311 312 int 313 ERR_set_implementation(const ERR_FNS *fns) 314 { 315 int ret = 0; 316 317 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 318 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 319 * an error is there?! */ 320 if (!err_fns) { 321 err_fns = fns; 322 ret = 1; 323 } 324 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 325 return ret; 326 } 327 328 /* These are the callbacks provided to "lh_new()" when creating the LHASH tables 329 * internal to the "err_defaults" implementation. */ 330 331 static unsigned long get_error_values(int inc, int top, const char **file, 332 int *line, const char **data, int *flags); 333 334 /* The internal functions used in the "err_defaults" implementation */ 335 336 static unsigned long 337 err_string_data_hash(const ERR_STRING_DATA *a) 338 { 339 unsigned long ret, l; 340 341 l = a->error; 342 ret = l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 343 return (ret^ret % 19*13); 344 } 345 static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA) 346 347 static int 348 err_string_data_cmp(const ERR_STRING_DATA *a, const ERR_STRING_DATA *b) 349 { 350 return (int)(a->error - b->error); 351 } 352 static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA) 353 354 static 355 LHASH_OF(ERR_STRING_DATA) *int_err_get(int create) 356 { 357 LHASH_OF(ERR_STRING_DATA) *ret = NULL; 358 359 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 360 if (!int_error_hash && create) { 361 CRYPTO_push_info("int_err_get (err.c)"); 362 int_error_hash = lh_ERR_STRING_DATA_new(); 363 CRYPTO_pop_info(); 364 } 365 if (int_error_hash) 366 ret = int_error_hash; 367 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 368 369 return ret; 370 } 371 372 static void 373 int_err_del(void) 374 { 375 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 376 if (int_error_hash) { 377 lh_ERR_STRING_DATA_free(int_error_hash); 378 int_error_hash = NULL; 379 } 380 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 381 } 382 383 static ERR_STRING_DATA * 384 int_err_get_item(const ERR_STRING_DATA *d) 385 { 386 ERR_STRING_DATA *p; 387 LHASH_OF(ERR_STRING_DATA) *hash; 388 389 err_fns_check(); 390 hash = ERRFN(err_get)(0); 391 if (!hash) 392 return NULL; 393 394 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 395 p = lh_ERR_STRING_DATA_retrieve(hash, d); 396 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 397 398 return p; 399 } 400 401 static ERR_STRING_DATA * 402 int_err_set_item(ERR_STRING_DATA *d) 403 { 404 ERR_STRING_DATA *p; 405 LHASH_OF(ERR_STRING_DATA) *hash; 406 407 err_fns_check(); 408 hash = ERRFN(err_get)(1); 409 if (!hash) 410 return NULL; 411 412 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 413 p = lh_ERR_STRING_DATA_insert(hash, d); 414 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 415 416 return p; 417 } 418 419 static ERR_STRING_DATA * 420 int_err_del_item(ERR_STRING_DATA *d) 421 { 422 ERR_STRING_DATA *p; 423 LHASH_OF(ERR_STRING_DATA) *hash; 424 425 err_fns_check(); 426 hash = ERRFN(err_get)(0); 427 if (!hash) 428 return NULL; 429 430 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 431 p = lh_ERR_STRING_DATA_delete(hash, d); 432 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 433 434 return p; 435 } 436 437 static unsigned long 438 err_state_hash(const ERR_STATE *a) 439 { 440 return CRYPTO_THREADID_hash(&a->tid) * 13; 441 } 442 static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) 443 444 static int 445 err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) 446 { 447 return CRYPTO_THREADID_cmp(&a->tid, &b->tid); 448 } 449 static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) 450 451 static 452 LHASH_OF(ERR_STATE) *int_thread_get(int create) 453 { 454 LHASH_OF(ERR_STATE) *ret = NULL; 455 456 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 457 if (!int_thread_hash && create) { 458 CRYPTO_push_info("int_thread_get (err.c)"); 459 int_thread_hash = lh_ERR_STATE_new(); 460 CRYPTO_pop_info(); 461 } 462 if (int_thread_hash) { 463 int_thread_hash_references++; 464 ret = int_thread_hash; 465 } 466 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 467 return ret; 468 } 469 470 static void 471 int_thread_release(LHASH_OF(ERR_STATE) **hash) 472 { 473 int i; 474 475 if (hash == NULL || *hash == NULL) 476 return; 477 478 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 479 if (i > 0) 480 return; 481 482 *hash = NULL; 483 } 484 485 static ERR_STATE * 486 int_thread_get_item(const ERR_STATE *d) 487 { 488 ERR_STATE *p; 489 LHASH_OF(ERR_STATE) *hash; 490 491 err_fns_check(); 492 hash = ERRFN(thread_get)(0); 493 if (!hash) 494 return NULL; 495 496 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 497 p = lh_ERR_STATE_retrieve(hash, d); 498 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 499 500 ERRFN(thread_release)(&hash); 501 return p; 502 } 503 504 static ERR_STATE * 505 int_thread_set_item(ERR_STATE *d) 506 { 507 ERR_STATE *p; 508 LHASH_OF(ERR_STATE) *hash; 509 510 err_fns_check(); 511 hash = ERRFN(thread_get)(1); 512 if (!hash) 513 return NULL; 514 515 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 516 p = lh_ERR_STATE_insert(hash, d); 517 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 518 519 ERRFN(thread_release)(&hash); 520 return p; 521 } 522 523 static void 524 int_thread_del_item(const ERR_STATE *d) 525 { 526 ERR_STATE *p; 527 LHASH_OF(ERR_STATE) *hash; 528 529 err_fns_check(); 530 hash = ERRFN(thread_get)(0); 531 if (!hash) 532 return; 533 534 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 535 p = lh_ERR_STATE_delete(hash, d); 536 /* make sure we don't leak memory */ 537 if (int_thread_hash_references == 1 && 538 int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) { 539 lh_ERR_STATE_free(int_thread_hash); 540 int_thread_hash = NULL; 541 } 542 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 543 544 ERRFN(thread_release)(&hash); 545 if (p) 546 ERR_STATE_free(p); 547 } 548 549 static int 550 int_err_get_next_lib(void) 551 { 552 int ret; 553 554 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 555 ret = int_err_library_number++; 556 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 557 558 return ret; 559 } 560 561 562 #ifndef OPENSSL_NO_ERR 563 #define NUM_SYS_STR_REASONS 127 564 #define LEN_SYS_STR_REASON 32 565 566 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 567 /* SYS_str_reasons is filled with copies of strerror() results at 568 * initialization. 569 * 'errno' values up to 127 should cover all usual errors, 570 * others will be displayed numerically by ERR_error_string. 571 * It is crucial that we have something for each reason code 572 * that occurs in ERR_str_reasons, or bogus reason strings 573 * will be returned for SYSerror(which always gets an errno 574 * value and never one of those 'standard' reason codes. */ 575 576 static void 577 build_SYS_str_reasons(void) 578 { 579 /* malloc cannot be used here, use static storage instead */ 580 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 581 int i; 582 static int init = 1; 583 584 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 585 if (!init) { 586 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 587 return; 588 } 589 590 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 591 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 592 if (!init) { 593 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 594 return; 595 } 596 597 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { 598 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 599 600 str->error = (unsigned long)i; 601 if (str->string == NULL) { 602 char (*dest)[LEN_SYS_STR_REASON] = 603 &(strerror_tab[i - 1]); 604 const char *src = strerror(i); 605 if (src != NULL) { 606 strlcpy(*dest, src, sizeof *dest); 607 str->string = *dest; 608 } 609 } 610 if (str->string == NULL) 611 str->string = "unknown"; 612 } 613 614 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 615 * as required by ERR_load_strings. */ 616 617 init = 0; 618 619 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 620 } 621 #endif 622 623 #define err_clear_data(p,i) \ 624 do { \ 625 if (((p)->err_data[i] != NULL) && \ 626 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) { \ 627 free((p)->err_data[i]); \ 628 (p)->err_data[i] = NULL; \ 629 } \ 630 (p)->err_data_flags[i] = 0; \ 631 } while(0) 632 633 #define err_clear(p,i) \ 634 do { \ 635 (p)->err_flags[i] = 0; \ 636 (p)->err_buffer[i] = 0; \ 637 err_clear_data(p, i); \ 638 (p)->err_file[i] = NULL; \ 639 (p)->err_line[i] = -1; \ 640 } while(0) 641 642 static void 643 ERR_STATE_free(ERR_STATE *s) 644 { 645 int i; 646 647 if (s == NULL) 648 return; 649 650 for (i = 0; i < ERR_NUM_ERRORS; i++) { 651 err_clear_data(s, i); 652 } 653 free(s); 654 } 655 656 void 657 ERR_load_ERR_strings_internal(void) 658 { 659 err_init_thread = pthread_self(); 660 err_fns_check(); 661 #ifndef OPENSSL_NO_ERR 662 err_load_strings(0, ERR_str_libraries); 663 err_load_strings(0, ERR_str_reasons); 664 err_load_strings(ERR_LIB_SYS, ERR_str_functs); 665 build_SYS_str_reasons(); 666 err_load_strings(ERR_LIB_SYS, SYS_str_reasons); 667 #endif 668 } 669 670 671 void 672 ERR_load_ERR_strings(void) 673 { 674 static pthread_once_t once = PTHREAD_ONCE_INIT; 675 676 if (pthread_equal(pthread_self(), err_init_thread)) 677 return; /* don't recurse */ 678 679 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 680 (void) OPENSSL_init_crypto(0, NULL); 681 682 (void) pthread_once(&once, ERR_load_ERR_strings_internal); 683 } 684 685 static void 686 err_load_strings(int lib, ERR_STRING_DATA *str) 687 { 688 while (str->error) { 689 if (lib) 690 str->error |= ERR_PACK(lib, 0, 0); 691 ERRFN(err_set_item)(str); 692 str++; 693 } 694 } 695 696 void 697 ERR_load_strings(int lib, ERR_STRING_DATA *str) 698 { 699 ERR_load_ERR_strings(); 700 err_load_strings(lib, str); 701 } 702 703 void 704 ERR_unload_strings(int lib, ERR_STRING_DATA *str) 705 { 706 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 707 (void) OPENSSL_init_crypto(0, NULL); 708 709 while (str->error) { 710 if (lib) 711 str->error |= ERR_PACK(lib, 0, 0); 712 ERRFN(err_del_item)(str); 713 str++; 714 } 715 } 716 717 void 718 ERR_free_strings(void) 719 { 720 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 721 (void) OPENSSL_init_crypto(0, NULL); 722 723 err_fns_check(); 724 ERRFN(err_del)(); 725 } 726 727 /********************************************************/ 728 729 void 730 ERR_put_error(int lib, int func, int reason, const char *file, int line) 731 { 732 ERR_STATE *es; 733 int save_errno = errno; 734 735 es = ERR_get_state(); 736 737 es->top = (es->top + 1) % ERR_NUM_ERRORS; 738 if (es->top == es->bottom) 739 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; 740 es->err_flags[es->top] = 0; 741 es->err_buffer[es->top] = ERR_PACK(lib, func, reason); 742 es->err_file[es->top] = file; 743 es->err_line[es->top] = line; 744 err_clear_data(es, es->top); 745 errno = save_errno; 746 } 747 748 void 749 ERR_clear_error(void) 750 { 751 int i; 752 ERR_STATE *es; 753 754 es = ERR_get_state(); 755 756 for (i = 0; i < ERR_NUM_ERRORS; i++) { 757 err_clear(es, i); 758 } 759 es->top = es->bottom = 0; 760 } 761 762 763 unsigned long 764 ERR_get_error(void) 765 { 766 return (get_error_values(1, 0, NULL, NULL, NULL, NULL)); 767 } 768 769 unsigned long 770 ERR_get_error_line(const char **file, int *line) 771 { 772 return (get_error_values(1, 0, file, line, NULL, NULL)); 773 } 774 775 unsigned long 776 ERR_get_error_line_data(const char **file, int *line, 777 const char **data, int *flags) 778 { 779 return (get_error_values(1, 0, file, line, data, flags)); 780 } 781 782 783 unsigned long 784 ERR_peek_error(void) 785 { 786 return (get_error_values(0, 0, NULL, NULL, NULL, NULL)); 787 } 788 789 unsigned long 790 ERR_peek_error_line(const char **file, int *line) 791 { 792 return (get_error_values(0, 0, file, line, NULL, NULL)); 793 } 794 795 unsigned long 796 ERR_peek_error_line_data(const char **file, int *line, 797 const char **data, int *flags) 798 { 799 return (get_error_values(0, 0, file, line, data, flags)); 800 } 801 802 unsigned long 803 ERR_peek_last_error(void) 804 { 805 return (get_error_values(0, 1, NULL, NULL, NULL, NULL)); 806 } 807 808 unsigned long 809 ERR_peek_last_error_line(const char **file, int *line) 810 { 811 return (get_error_values(0, 1, file, line, NULL, NULL)); 812 } 813 814 unsigned long 815 ERR_peek_last_error_line_data(const char **file, int *line, 816 const char **data, int *flags) 817 { 818 return (get_error_values(0, 1, file, line, data, flags)); 819 } 820 821 static unsigned long 822 get_error_values(int inc, int top, const char **file, int *line, 823 const char **data, int *flags) 824 { 825 int i = 0; 826 ERR_STATE *es; 827 unsigned long ret; 828 829 es = ERR_get_state(); 830 831 if (inc && top) { 832 if (file) 833 *file = ""; 834 if (line) 835 *line = 0; 836 if (data) 837 *data = ""; 838 if (flags) 839 *flags = 0; 840 841 return ERR_R_INTERNAL_ERROR; 842 } 843 844 if (es->bottom == es->top) 845 return 0; 846 if (top) 847 i = es->top; /* last error */ 848 else 849 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */ 850 851 ret = es->err_buffer[i]; 852 if (inc) { 853 es->bottom = i; 854 es->err_buffer[i] = 0; 855 } 856 857 if ((file != NULL) && (line != NULL)) { 858 if (es->err_file[i] == NULL) { 859 *file = "NA"; 860 if (line != NULL) 861 *line = 0; 862 } else { 863 *file = es->err_file[i]; 864 if (line != NULL) 865 *line = es->err_line[i]; 866 } 867 } 868 869 if (data == NULL) { 870 if (inc) { 871 err_clear_data(es, i); 872 } 873 } else { 874 if (es->err_data[i] == NULL) { 875 *data = ""; 876 if (flags != NULL) 877 *flags = 0; 878 } else { 879 *data = es->err_data[i]; 880 if (flags != NULL) 881 *flags = es->err_data_flags[i]; 882 } 883 } 884 return ret; 885 } 886 887 void 888 ERR_error_string_n(unsigned long e, char *buf, size_t len) 889 { 890 char lsbuf[30], fsbuf[30], rsbuf[30]; 891 const char *ls, *fs, *rs; 892 int l, f, r, ret; 893 894 l = ERR_GET_LIB(e); 895 f = ERR_GET_FUNC(e); 896 r = ERR_GET_REASON(e); 897 898 ls = ERR_lib_error_string(e); 899 fs = ERR_func_error_string(e); 900 rs = ERR_reason_error_string(e); 901 902 if (ls == NULL) { 903 (void) snprintf(lsbuf, sizeof(lsbuf), "lib(%d)", l); 904 ls = lsbuf; 905 } 906 if (fs == NULL) { 907 (void) snprintf(fsbuf, sizeof(fsbuf), "func(%d)", f); 908 fs = fsbuf; 909 } 910 if (rs == NULL) { 911 (void) snprintf(rsbuf, sizeof(rsbuf), "reason(%d)", r); 912 rs = rsbuf; 913 } 914 915 ret = snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs); 916 if (ret == -1) 917 return; /* can't happen, and can't do better if it does */ 918 if (ret >= len) { 919 /* output may be truncated; make sure we always have 5 920 * colon-separated fields, i.e. 4 colons ... */ 921 #define NUM_COLONS 4 922 if (len > NUM_COLONS) /* ... if possible */ 923 { 924 int i; 925 char *s = buf; 926 927 for (i = 0; i < NUM_COLONS; i++) { 928 char *colon = strchr(s, ':'); 929 if (colon == NULL || 930 colon > &buf[len - 1] - NUM_COLONS + i) { 931 /* set colon no. i at last possible position 932 * (buf[len-1] is the terminating 0)*/ 933 colon = &buf[len - 1] - NUM_COLONS + i; 934 *colon = ':'; 935 } 936 s = colon + 1; 937 } 938 } 939 } 940 } 941 942 /* BAD for multi-threading: uses a local buffer if ret == NULL */ 943 /* ERR_error_string_n should be used instead for ret != NULL 944 * as ERR_error_string cannot know how large the buffer is */ 945 char * 946 ERR_error_string(unsigned long e, char *ret) 947 { 948 static char buf[256]; 949 950 if (ret == NULL) 951 ret = buf; 952 ERR_error_string_n(e, ret, 256); 953 954 return ret; 955 } 956 957 LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void) 958 { 959 err_fns_check(); 960 return ERRFN(err_get)(0); 961 } 962 963 LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void) 964 { 965 err_fns_check(); 966 return ERRFN(thread_get)(0); 967 } 968 969 void 970 ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash) 971 { 972 err_fns_check(); 973 ERRFN(thread_release)(hash); 974 } 975 976 const char * 977 ERR_lib_error_string(unsigned long e) 978 { 979 ERR_STRING_DATA d, *p; 980 unsigned long l; 981 982 if (!OPENSSL_init_crypto(0, NULL)) 983 return NULL; 984 985 err_fns_check(); 986 l = ERR_GET_LIB(e); 987 d.error = ERR_PACK(l, 0, 0); 988 p = ERRFN(err_get_item)(&d); 989 return ((p == NULL) ? NULL : p->string); 990 } 991 992 const char * 993 ERR_func_error_string(unsigned long e) 994 { 995 ERR_STRING_DATA d, *p; 996 unsigned long l, f; 997 998 err_fns_check(); 999 l = ERR_GET_LIB(e); 1000 f = ERR_GET_FUNC(e); 1001 d.error = ERR_PACK(l, f, 0); 1002 p = ERRFN(err_get_item)(&d); 1003 return ((p == NULL) ? NULL : p->string); 1004 } 1005 1006 const char * 1007 ERR_reason_error_string(unsigned long e) 1008 { 1009 ERR_STRING_DATA d, *p = NULL; 1010 unsigned long l, r; 1011 1012 err_fns_check(); 1013 l = ERR_GET_LIB(e); 1014 r = ERR_GET_REASON(e); 1015 d.error = ERR_PACK(l, 0, r); 1016 p = ERRFN(err_get_item)(&d); 1017 if (!p) { 1018 d.error = ERR_PACK(0, 0, r); 1019 p = ERRFN(err_get_item)(&d); 1020 } 1021 return ((p == NULL) ? NULL : p->string); 1022 } 1023 1024 void 1025 ERR_remove_thread_state(const CRYPTO_THREADID *id) 1026 { 1027 ERR_STATE tmp; 1028 1029 if (id) 1030 CRYPTO_THREADID_cpy(&tmp.tid, id); 1031 else 1032 CRYPTO_THREADID_current(&tmp.tid); 1033 err_fns_check(); 1034 /* thread_del_item automatically destroys the LHASH if the number of 1035 * items reaches zero. */ 1036 ERRFN(thread_del_item)(&tmp); 1037 } 1038 1039 #ifndef OPENSSL_NO_DEPRECATED 1040 void 1041 ERR_remove_state(unsigned long pid) 1042 { 1043 ERR_remove_thread_state(NULL); 1044 } 1045 #endif 1046 1047 ERR_STATE * 1048 ERR_get_state(void) 1049 { 1050 static ERR_STATE fallback; 1051 ERR_STATE *ret, tmp, *tmpp = NULL; 1052 int i; 1053 CRYPTO_THREADID tid; 1054 1055 err_fns_check(); 1056 CRYPTO_THREADID_current(&tid); 1057 CRYPTO_THREADID_cpy(&tmp.tid, &tid); 1058 ret = ERRFN(thread_get_item)(&tmp); 1059 1060 /* ret == the error state, if NULL, make a new one */ 1061 if (ret == NULL) { 1062 ret = malloc(sizeof(ERR_STATE)); 1063 if (ret == NULL) 1064 return (&fallback); 1065 CRYPTO_THREADID_cpy(&ret->tid, &tid); 1066 ret->top = 0; 1067 ret->bottom = 0; 1068 for (i = 0; i < ERR_NUM_ERRORS; i++) { 1069 ret->err_data[i] = NULL; 1070 ret->err_data_flags[i] = 0; 1071 } 1072 tmpp = ERRFN(thread_set_item)(ret); 1073 /* To check if insertion failed, do a get. */ 1074 if (ERRFN(thread_get_item)(ret) != ret) { 1075 ERR_STATE_free(ret); /* could not insert it */ 1076 return (&fallback); 1077 } 1078 /* If a race occured in this function and we came second, tmpp 1079 * is the first one that we just replaced. */ 1080 if (tmpp) 1081 ERR_STATE_free(tmpp); 1082 } 1083 return ret; 1084 } 1085 1086 int 1087 ERR_get_next_error_library(void) 1088 { 1089 err_fns_check(); 1090 return ERRFN(get_next_lib)(); 1091 } 1092 1093 void 1094 ERR_set_error_data(char *data, int flags) 1095 { 1096 ERR_STATE *es; 1097 int i; 1098 1099 es = ERR_get_state(); 1100 1101 i = es->top; 1102 if (i == 0) 1103 i = ERR_NUM_ERRORS - 1; 1104 1105 err_clear_data(es, i); 1106 es->err_data[i] = data; 1107 es->err_data_flags[i] = flags; 1108 } 1109 1110 void 1111 ERR_asprintf_error_data(char * format, ...) 1112 { 1113 char *errbuf = NULL; 1114 va_list ap; 1115 int r; 1116 1117 va_start(ap, format); 1118 r = vasprintf(&errbuf, format, ap); 1119 va_end(ap); 1120 if (r == -1) 1121 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1122 else 1123 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1124 } 1125 1126 void 1127 ERR_add_error_vdata(int num, va_list args) 1128 { 1129 char format[129]; 1130 char *errbuf; 1131 int i; 1132 1133 format[0] = '\0'; 1134 for (i = 0; i < num; i++) { 1135 if (strlcat(format, "%s", sizeof(format)) >= sizeof(format)) { 1136 ERR_set_error_data("too many errors", ERR_TXT_STRING); 1137 return; 1138 } 1139 } 1140 if (vasprintf(&errbuf, format, args) == -1) 1141 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1142 else 1143 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1144 } 1145 1146 void 1147 ERR_add_error_data(int num, ...) 1148 { 1149 va_list args; 1150 va_start(args, num); 1151 ERR_add_error_vdata(num, args); 1152 va_end(args); 1153 } 1154 1155 int 1156 ERR_set_mark(void) 1157 { 1158 ERR_STATE *es; 1159 1160 es = ERR_get_state(); 1161 1162 if (es->bottom == es->top) 1163 return 0; 1164 es->err_flags[es->top] |= ERR_FLAG_MARK; 1165 return 1; 1166 } 1167 1168 int 1169 ERR_pop_to_mark(void) 1170 { 1171 ERR_STATE *es; 1172 1173 es = ERR_get_state(); 1174 1175 while (es->bottom != es->top && 1176 (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { 1177 err_clear(es, es->top); 1178 es->top -= 1; 1179 if (es->top == -1) 1180 es->top = ERR_NUM_ERRORS - 1; 1181 } 1182 1183 if (es->bottom == es->top) 1184 return 0; 1185 es->err_flags[es->top]&=~ERR_FLAG_MARK; 1186 return 1; 1187 } 1188 1189 void 1190 err_clear_last_constant_time(int clear) 1191 { 1192 ERR_STATE *es; 1193 int top; 1194 1195 es = ERR_get_state(); 1196 if (es == NULL) 1197 return; 1198 1199 top = es->top; 1200 1201 es->err_flags[top] &= ~(0 - clear); 1202 es->err_buffer[top] &= ~(0UL - clear); 1203 es->err_file[top] = (const char *)((uintptr_t)es->err_file[top] & 1204 ~((uintptr_t)0 - clear)); 1205 es->err_line[top] |= 0 - clear; 1206 1207 es->top = (top + ERR_NUM_ERRORS - clear) % ERR_NUM_ERRORS; 1208 } 1209