1 /* $OpenBSD: err.c,v 1.47 2018/04/03 21:59:37 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 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"}, 218 219 {0, NULL}, 220 }; 221 #endif 222 223 224 /* Define the predeclared (but externally opaque) "ERR_FNS" type */ 225 struct st_ERR_FNS { 226 /* Works on the "error_hash" string table */ 227 LHASH_OF(ERR_STRING_DATA) *(*cb_err_get)(int create); 228 void (*cb_err_del)(void); 229 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 230 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 231 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 232 /* Works on the "thread_hash" error-state table */ 233 LHASH_OF(ERR_STATE) *(*cb_thread_get)(int create); 234 void (*cb_thread_release)(LHASH_OF(ERR_STATE) **hash); 235 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 236 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 237 void (*cb_thread_del_item)(const ERR_STATE *); 238 /* Returns the next available error "library" numbers */ 239 int (*cb_get_next_lib)(void); 240 }; 241 242 /* Predeclarations of the "err_defaults" functions */ 243 static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create); 244 static void int_err_del(void); 245 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 246 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 247 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 248 static LHASH_OF(ERR_STATE) *int_thread_get(int create); 249 static void int_thread_release(LHASH_OF(ERR_STATE) **hash); 250 static ERR_STATE *int_thread_get_item(const ERR_STATE *); 251 static ERR_STATE *int_thread_set_item(ERR_STATE *); 252 static void int_thread_del_item(const ERR_STATE *); 253 static int int_err_get_next_lib(void); 254 255 /* The static ERR_FNS table using these defaults functions */ 256 static const ERR_FNS err_defaults = { 257 int_err_get, 258 int_err_del, 259 int_err_get_item, 260 int_err_set_item, 261 int_err_del_item, 262 int_thread_get, 263 int_thread_release, 264 int_thread_get_item, 265 int_thread_set_item, 266 int_thread_del_item, 267 int_err_get_next_lib 268 }; 269 270 /* The replacable table of ERR_FNS functions we use at run-time */ 271 static const ERR_FNS *err_fns = NULL; 272 273 /* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 274 #define ERRFN(a) err_fns->cb_##a 275 276 /* The internal state used by "err_defaults" - as such, the setting, reading, 277 * creating, and deleting of this data should only be permitted via the 278 * "err_defaults" functions. This way, a linked module can completely defer all 279 * ERR state operation (together with requisite locking) to the implementations 280 * and state in the loading application. */ 281 static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; 282 static LHASH_OF(ERR_STATE) *int_thread_hash = NULL; 283 static int int_thread_hash_references = 0; 284 static int int_err_library_number = ERR_LIB_USER; 285 286 static pthread_t err_init_thread; 287 288 /* Internal function that checks whether "err_fns" is set and if not, sets it to 289 * the defaults. */ 290 static void 291 err_fns_check(void) 292 { 293 if (err_fns) 294 return; 295 296 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 297 if (!err_fns) 298 err_fns = &err_defaults; 299 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 300 } 301 302 /* API functions to get or set the underlying ERR functions. */ 303 304 const ERR_FNS * 305 ERR_get_implementation(void) 306 { 307 err_fns_check(); 308 return err_fns; 309 } 310 311 int 312 ERR_set_implementation(const ERR_FNS *fns) 313 { 314 int ret = 0; 315 316 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 317 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 318 * an error is there?! */ 319 if (!err_fns) { 320 err_fns = fns; 321 ret = 1; 322 } 323 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 324 return ret; 325 } 326 327 /* These are the callbacks provided to "lh_new()" when creating the LHASH tables 328 * internal to the "err_defaults" implementation. */ 329 330 static unsigned long get_error_values(int inc, int top, const char **file, 331 int *line, const char **data, int *flags); 332 333 /* The internal functions used in the "err_defaults" implementation */ 334 335 static unsigned long 336 err_string_data_hash(const ERR_STRING_DATA *a) 337 { 338 unsigned long ret, l; 339 340 l = a->error; 341 ret = l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 342 return (ret^ret % 19*13); 343 } 344 static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA) 345 346 static int 347 err_string_data_cmp(const ERR_STRING_DATA *a, const ERR_STRING_DATA *b) 348 { 349 return (int)(a->error - b->error); 350 } 351 static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA) 352 353 static 354 LHASH_OF(ERR_STRING_DATA) *int_err_get(int create) 355 { 356 LHASH_OF(ERR_STRING_DATA) *ret = NULL; 357 358 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 359 if (!int_error_hash && create) { 360 CRYPTO_push_info("int_err_get (err.c)"); 361 int_error_hash = lh_ERR_STRING_DATA_new(); 362 CRYPTO_pop_info(); 363 } 364 if (int_error_hash) 365 ret = int_error_hash; 366 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 367 368 return ret; 369 } 370 371 static void 372 int_err_del(void) 373 { 374 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 375 if (int_error_hash) { 376 lh_ERR_STRING_DATA_free(int_error_hash); 377 int_error_hash = NULL; 378 } 379 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 380 } 381 382 static ERR_STRING_DATA * 383 int_err_get_item(const ERR_STRING_DATA *d) 384 { 385 ERR_STRING_DATA *p; 386 LHASH_OF(ERR_STRING_DATA) *hash; 387 388 err_fns_check(); 389 hash = ERRFN(err_get)(0); 390 if (!hash) 391 return NULL; 392 393 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 394 p = lh_ERR_STRING_DATA_retrieve(hash, d); 395 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 396 397 return p; 398 } 399 400 static ERR_STRING_DATA * 401 int_err_set_item(ERR_STRING_DATA *d) 402 { 403 ERR_STRING_DATA *p; 404 LHASH_OF(ERR_STRING_DATA) *hash; 405 406 err_fns_check(); 407 hash = ERRFN(err_get)(1); 408 if (!hash) 409 return NULL; 410 411 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 412 p = lh_ERR_STRING_DATA_insert(hash, d); 413 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 414 415 return p; 416 } 417 418 static ERR_STRING_DATA * 419 int_err_del_item(ERR_STRING_DATA *d) 420 { 421 ERR_STRING_DATA *p; 422 LHASH_OF(ERR_STRING_DATA) *hash; 423 424 err_fns_check(); 425 hash = ERRFN(err_get)(0); 426 if (!hash) 427 return NULL; 428 429 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 430 p = lh_ERR_STRING_DATA_delete(hash, d); 431 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 432 433 return p; 434 } 435 436 static unsigned long 437 err_state_hash(const ERR_STATE *a) 438 { 439 return CRYPTO_THREADID_hash(&a->tid) * 13; 440 } 441 static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) 442 443 static int 444 err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) 445 { 446 return CRYPTO_THREADID_cmp(&a->tid, &b->tid); 447 } 448 static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) 449 450 static 451 LHASH_OF(ERR_STATE) *int_thread_get(int create) 452 { 453 LHASH_OF(ERR_STATE) *ret = NULL; 454 455 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 456 if (!int_thread_hash && create) { 457 CRYPTO_push_info("int_thread_get (err.c)"); 458 int_thread_hash = lh_ERR_STATE_new(); 459 CRYPTO_pop_info(); 460 } 461 if (int_thread_hash) { 462 int_thread_hash_references++; 463 ret = int_thread_hash; 464 } 465 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 466 return ret; 467 } 468 469 static void 470 int_thread_release(LHASH_OF(ERR_STATE) **hash) 471 { 472 int i; 473 474 if (hash == NULL || *hash == NULL) 475 return; 476 477 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 478 if (i > 0) 479 return; 480 481 *hash = NULL; 482 } 483 484 static ERR_STATE * 485 int_thread_get_item(const ERR_STATE *d) 486 { 487 ERR_STATE *p; 488 LHASH_OF(ERR_STATE) *hash; 489 490 err_fns_check(); 491 hash = ERRFN(thread_get)(0); 492 if (!hash) 493 return NULL; 494 495 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 496 p = lh_ERR_STATE_retrieve(hash, d); 497 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 498 499 ERRFN(thread_release)(&hash); 500 return p; 501 } 502 503 static ERR_STATE * 504 int_thread_set_item(ERR_STATE *d) 505 { 506 ERR_STATE *p; 507 LHASH_OF(ERR_STATE) *hash; 508 509 err_fns_check(); 510 hash = ERRFN(thread_get)(1); 511 if (!hash) 512 return NULL; 513 514 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 515 p = lh_ERR_STATE_insert(hash, d); 516 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 517 518 ERRFN(thread_release)(&hash); 519 return p; 520 } 521 522 static void 523 int_thread_del_item(const ERR_STATE *d) 524 { 525 ERR_STATE *p; 526 LHASH_OF(ERR_STATE) *hash; 527 528 err_fns_check(); 529 hash = ERRFN(thread_get)(0); 530 if (!hash) 531 return; 532 533 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 534 p = lh_ERR_STATE_delete(hash, d); 535 /* make sure we don't leak memory */ 536 if (int_thread_hash_references == 1 && 537 int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) { 538 lh_ERR_STATE_free(int_thread_hash); 539 int_thread_hash = NULL; 540 } 541 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 542 543 ERRFN(thread_release)(&hash); 544 if (p) 545 ERR_STATE_free(p); 546 } 547 548 static int 549 int_err_get_next_lib(void) 550 { 551 int ret; 552 553 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 554 ret = int_err_library_number++; 555 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 556 557 return ret; 558 } 559 560 561 #ifndef OPENSSL_NO_ERR 562 #define NUM_SYS_STR_REASONS 127 563 #define LEN_SYS_STR_REASON 32 564 565 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 566 /* SYS_str_reasons is filled with copies of strerror() results at 567 * initialization. 568 * 'errno' values up to 127 should cover all usual errors, 569 * others will be displayed numerically by ERR_error_string. 570 * It is crucial that we have something for each reason code 571 * that occurs in ERR_str_reasons, or bogus reason strings 572 * will be returned for SYSerror(which always gets an errno 573 * value and never one of those 'standard' reason codes. */ 574 575 static void 576 build_SYS_str_reasons(void) 577 { 578 /* malloc cannot be used here, use static storage instead */ 579 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 580 int i; 581 static int init = 1; 582 583 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 584 if (!init) { 585 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 586 return; 587 } 588 589 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 590 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 591 if (!init) { 592 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 593 return; 594 } 595 596 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { 597 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 598 599 str->error = (unsigned long)i; 600 if (str->string == NULL) { 601 char (*dest)[LEN_SYS_STR_REASON] = 602 &(strerror_tab[i - 1]); 603 const char *src = strerror(i); 604 if (src != NULL) { 605 strlcpy(*dest, src, sizeof *dest); 606 str->string = *dest; 607 } 608 } 609 if (str->string == NULL) 610 str->string = "unknown"; 611 } 612 613 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 614 * as required by ERR_load_strings. */ 615 616 init = 0; 617 618 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 619 } 620 #endif 621 622 #define err_clear_data(p,i) \ 623 do { \ 624 if (((p)->err_data[i] != NULL) && \ 625 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) { \ 626 free((p)->err_data[i]); \ 627 (p)->err_data[i] = NULL; \ 628 } \ 629 (p)->err_data_flags[i] = 0; \ 630 } while(0) 631 632 #define err_clear(p,i) \ 633 do { \ 634 (p)->err_flags[i] = 0; \ 635 (p)->err_buffer[i] = 0; \ 636 err_clear_data(p, i); \ 637 (p)->err_file[i] = NULL; \ 638 (p)->err_line[i] = -1; \ 639 } while(0) 640 641 static void 642 ERR_STATE_free(ERR_STATE *s) 643 { 644 int i; 645 646 if (s == NULL) 647 return; 648 649 for (i = 0; i < ERR_NUM_ERRORS; i++) { 650 err_clear_data(s, i); 651 } 652 free(s); 653 } 654 655 void 656 ERR_load_ERR_strings_internal(void) 657 { 658 err_init_thread = pthread_self(); 659 err_fns_check(); 660 #ifndef OPENSSL_NO_ERR 661 err_load_strings(0, ERR_str_libraries); 662 err_load_strings(0, ERR_str_reasons); 663 err_load_strings(ERR_LIB_SYS, ERR_str_functs); 664 build_SYS_str_reasons(); 665 err_load_strings(ERR_LIB_SYS, SYS_str_reasons); 666 #endif 667 } 668 669 670 void 671 ERR_load_ERR_strings(void) 672 { 673 static pthread_once_t once = PTHREAD_ONCE_INIT; 674 675 if (pthread_equal(pthread_self(), err_init_thread)) 676 return; /* don't recurse */ 677 678 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 679 (void) OPENSSL_init_crypto(0, NULL); 680 681 (void) pthread_once(&once, ERR_load_ERR_strings_internal); 682 } 683 684 static void 685 err_load_strings(int lib, ERR_STRING_DATA *str) 686 { 687 while (str->error) { 688 if (lib) 689 str->error |= ERR_PACK(lib, 0, 0); 690 ERRFN(err_set_item)(str); 691 str++; 692 } 693 } 694 695 void 696 ERR_load_strings(int lib, ERR_STRING_DATA *str) 697 { 698 ERR_load_ERR_strings(); 699 err_load_strings(lib, str); 700 } 701 702 void 703 ERR_unload_strings(int lib, ERR_STRING_DATA *str) 704 { 705 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 706 (void) OPENSSL_init_crypto(0, NULL); 707 708 while (str->error) { 709 if (lib) 710 str->error |= ERR_PACK(lib, 0, 0); 711 ERRFN(err_del_item)(str); 712 str++; 713 } 714 } 715 716 void 717 ERR_free_strings(void) 718 { 719 /* Prayer and clean living lets you ignore errors, OpenSSL style */ 720 (void) OPENSSL_init_crypto(0, NULL); 721 722 err_fns_check(); 723 ERRFN(err_del)(); 724 } 725 726 /********************************************************/ 727 728 void 729 ERR_put_error(int lib, int func, int reason, const char *file, int line) 730 { 731 ERR_STATE *es; 732 int save_errno = errno; 733 734 es = ERR_get_state(); 735 736 es->top = (es->top + 1) % ERR_NUM_ERRORS; 737 if (es->top == es->bottom) 738 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; 739 es->err_flags[es->top] = 0; 740 es->err_buffer[es->top] = ERR_PACK(lib, func, reason); 741 es->err_file[es->top] = file; 742 es->err_line[es->top] = line; 743 err_clear_data(es, es->top); 744 errno = save_errno; 745 } 746 747 void 748 ERR_clear_error(void) 749 { 750 int i; 751 ERR_STATE *es; 752 753 es = ERR_get_state(); 754 755 for (i = 0; i < ERR_NUM_ERRORS; i++) { 756 err_clear(es, i); 757 } 758 es->top = es->bottom = 0; 759 } 760 761 762 unsigned long 763 ERR_get_error(void) 764 { 765 return (get_error_values(1, 0, NULL, NULL, NULL, NULL)); 766 } 767 768 unsigned long 769 ERR_get_error_line(const char **file, int *line) 770 { 771 return (get_error_values(1, 0, file, line, NULL, NULL)); 772 } 773 774 unsigned long 775 ERR_get_error_line_data(const char **file, int *line, 776 const char **data, int *flags) 777 { 778 return (get_error_values(1, 0, file, line, data, flags)); 779 } 780 781 782 unsigned long 783 ERR_peek_error(void) 784 { 785 return (get_error_values(0, 0, NULL, NULL, NULL, NULL)); 786 } 787 788 unsigned long 789 ERR_peek_error_line(const char **file, int *line) 790 { 791 return (get_error_values(0, 0, file, line, NULL, NULL)); 792 } 793 794 unsigned long 795 ERR_peek_error_line_data(const char **file, int *line, 796 const char **data, int *flags) 797 { 798 return (get_error_values(0, 0, file, line, data, flags)); 799 } 800 801 unsigned long 802 ERR_peek_last_error(void) 803 { 804 return (get_error_values(0, 1, NULL, NULL, NULL, NULL)); 805 } 806 807 unsigned long 808 ERR_peek_last_error_line(const char **file, int *line) 809 { 810 return (get_error_values(0, 1, file, line, NULL, NULL)); 811 } 812 813 unsigned long 814 ERR_peek_last_error_line_data(const char **file, int *line, 815 const char **data, int *flags) 816 { 817 return (get_error_values(0, 1, file, line, data, flags)); 818 } 819 820 static unsigned long 821 get_error_values(int inc, int top, const char **file, int *line, 822 const char **data, int *flags) 823 { 824 int i = 0; 825 ERR_STATE *es; 826 unsigned long ret; 827 828 es = ERR_get_state(); 829 830 if (inc && top) { 831 if (file) 832 *file = ""; 833 if (line) 834 *line = 0; 835 if (data) 836 *data = ""; 837 if (flags) 838 *flags = 0; 839 840 return ERR_R_INTERNAL_ERROR; 841 } 842 843 if (es->bottom == es->top) 844 return 0; 845 if (top) 846 i = es->top; /* last error */ 847 else 848 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */ 849 850 ret = es->err_buffer[i]; 851 if (inc) { 852 es->bottom = i; 853 es->err_buffer[i] = 0; 854 } 855 856 if ((file != NULL) && (line != NULL)) { 857 if (es->err_file[i] == NULL) { 858 *file = "NA"; 859 if (line != NULL) 860 *line = 0; 861 } else { 862 *file = es->err_file[i]; 863 if (line != NULL) 864 *line = es->err_line[i]; 865 } 866 } 867 868 if (data == NULL) { 869 if (inc) { 870 err_clear_data(es, i); 871 } 872 } else { 873 if (es->err_data[i] == NULL) { 874 *data = ""; 875 if (flags != NULL) 876 *flags = 0; 877 } else { 878 *data = es->err_data[i]; 879 if (flags != NULL) 880 *flags = es->err_data_flags[i]; 881 } 882 } 883 return ret; 884 } 885 886 void 887 ERR_error_string_n(unsigned long e, char *buf, size_t len) 888 { 889 char lsbuf[30], fsbuf[30], rsbuf[30]; 890 const char *ls, *fs, *rs; 891 int l, f, r, ret; 892 893 l = ERR_GET_LIB(e); 894 f = ERR_GET_FUNC(e); 895 r = ERR_GET_REASON(e); 896 897 ls = ERR_lib_error_string(e); 898 fs = ERR_func_error_string(e); 899 rs = ERR_reason_error_string(e); 900 901 if (ls == NULL) { 902 (void) snprintf(lsbuf, sizeof(lsbuf), "lib(%d)", l); 903 ls = lsbuf; 904 } 905 if (fs == NULL) { 906 (void) snprintf(fsbuf, sizeof(fsbuf), "func(%d)", f); 907 fs = fsbuf; 908 } 909 if (rs == NULL) { 910 (void) snprintf(rsbuf, sizeof(rsbuf), "reason(%d)", r); 911 rs = rsbuf; 912 } 913 914 ret = snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs); 915 if (ret == -1) 916 return; /* can't happen, and can't do better if it does */ 917 if (ret >= len) { 918 /* output may be truncated; make sure we always have 5 919 * colon-separated fields, i.e. 4 colons ... */ 920 #define NUM_COLONS 4 921 if (len > NUM_COLONS) /* ... if possible */ 922 { 923 int i; 924 char *s = buf; 925 926 for (i = 0; i < NUM_COLONS; i++) { 927 char *colon = strchr(s, ':'); 928 if (colon == NULL || 929 colon > &buf[len - 1] - NUM_COLONS + i) { 930 /* set colon no. i at last possible position 931 * (buf[len-1] is the terminating 0)*/ 932 colon = &buf[len - 1] - NUM_COLONS + i; 933 *colon = ':'; 934 } 935 s = colon + 1; 936 } 937 } 938 } 939 } 940 941 /* BAD for multi-threading: uses a local buffer if ret == NULL */ 942 /* ERR_error_string_n should be used instead for ret != NULL 943 * as ERR_error_string cannot know how large the buffer is */ 944 char * 945 ERR_error_string(unsigned long e, char *ret) 946 { 947 static char buf[256]; 948 949 if (ret == NULL) 950 ret = buf; 951 ERR_error_string_n(e, ret, 256); 952 953 return ret; 954 } 955 956 LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void) 957 { 958 err_fns_check(); 959 return ERRFN(err_get)(0); 960 } 961 962 LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void) 963 { 964 err_fns_check(); 965 return ERRFN(thread_get)(0); 966 } 967 968 void 969 ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash) 970 { 971 err_fns_check(); 972 ERRFN(thread_release)(hash); 973 } 974 975 const char * 976 ERR_lib_error_string(unsigned long e) 977 { 978 ERR_STRING_DATA d, *p; 979 unsigned long l; 980 981 if (!OPENSSL_init_crypto(0, NULL)) 982 return NULL; 983 984 err_fns_check(); 985 l = ERR_GET_LIB(e); 986 d.error = ERR_PACK(l, 0, 0); 987 p = ERRFN(err_get_item)(&d); 988 return ((p == NULL) ? NULL : p->string); 989 } 990 991 const char * 992 ERR_func_error_string(unsigned long e) 993 { 994 ERR_STRING_DATA d, *p; 995 unsigned long l, f; 996 997 err_fns_check(); 998 l = ERR_GET_LIB(e); 999 f = ERR_GET_FUNC(e); 1000 d.error = ERR_PACK(l, f, 0); 1001 p = ERRFN(err_get_item)(&d); 1002 return ((p == NULL) ? NULL : p->string); 1003 } 1004 1005 const char * 1006 ERR_reason_error_string(unsigned long e) 1007 { 1008 ERR_STRING_DATA d, *p = NULL; 1009 unsigned long l, r; 1010 1011 err_fns_check(); 1012 l = ERR_GET_LIB(e); 1013 r = ERR_GET_REASON(e); 1014 d.error = ERR_PACK(l, 0, r); 1015 p = ERRFN(err_get_item)(&d); 1016 if (!p) { 1017 d.error = ERR_PACK(0, 0, r); 1018 p = ERRFN(err_get_item)(&d); 1019 } 1020 return ((p == NULL) ? NULL : p->string); 1021 } 1022 1023 void 1024 ERR_remove_thread_state(const CRYPTO_THREADID *id) 1025 { 1026 ERR_STATE tmp; 1027 1028 if (id) 1029 CRYPTO_THREADID_cpy(&tmp.tid, id); 1030 else 1031 CRYPTO_THREADID_current(&tmp.tid); 1032 err_fns_check(); 1033 /* thread_del_item automatically destroys the LHASH if the number of 1034 * items reaches zero. */ 1035 ERRFN(thread_del_item)(&tmp); 1036 } 1037 1038 #ifndef OPENSSL_NO_DEPRECATED 1039 void 1040 ERR_remove_state(unsigned long pid) 1041 { 1042 ERR_remove_thread_state(NULL); 1043 } 1044 #endif 1045 1046 ERR_STATE * 1047 ERR_get_state(void) 1048 { 1049 static ERR_STATE fallback; 1050 ERR_STATE *ret, tmp, *tmpp = NULL; 1051 int i; 1052 CRYPTO_THREADID tid; 1053 1054 err_fns_check(); 1055 CRYPTO_THREADID_current(&tid); 1056 CRYPTO_THREADID_cpy(&tmp.tid, &tid); 1057 ret = ERRFN(thread_get_item)(&tmp); 1058 1059 /* ret == the error state, if NULL, make a new one */ 1060 if (ret == NULL) { 1061 ret = malloc(sizeof(ERR_STATE)); 1062 if (ret == NULL) 1063 return (&fallback); 1064 CRYPTO_THREADID_cpy(&ret->tid, &tid); 1065 ret->top = 0; 1066 ret->bottom = 0; 1067 for (i = 0; i < ERR_NUM_ERRORS; i++) { 1068 ret->err_data[i] = NULL; 1069 ret->err_data_flags[i] = 0; 1070 } 1071 tmpp = ERRFN(thread_set_item)(ret); 1072 /* To check if insertion failed, do a get. */ 1073 if (ERRFN(thread_get_item)(ret) != ret) { 1074 ERR_STATE_free(ret); /* could not insert it */ 1075 return (&fallback); 1076 } 1077 /* If a race occured in this function and we came second, tmpp 1078 * is the first one that we just replaced. */ 1079 if (tmpp) 1080 ERR_STATE_free(tmpp); 1081 } 1082 return ret; 1083 } 1084 1085 int 1086 ERR_get_next_error_library(void) 1087 { 1088 err_fns_check(); 1089 return ERRFN(get_next_lib)(); 1090 } 1091 1092 void 1093 ERR_set_error_data(char *data, int flags) 1094 { 1095 ERR_STATE *es; 1096 int i; 1097 1098 es = ERR_get_state(); 1099 1100 i = es->top; 1101 if (i == 0) 1102 i = ERR_NUM_ERRORS - 1; 1103 1104 err_clear_data(es, i); 1105 es->err_data[i] = data; 1106 es->err_data_flags[i] = flags; 1107 } 1108 1109 void 1110 ERR_asprintf_error_data(char * format, ...) 1111 { 1112 char *errbuf = NULL; 1113 va_list ap; 1114 int r; 1115 1116 va_start(ap, format); 1117 r = vasprintf(&errbuf, format, ap); 1118 va_end(ap); 1119 if (r == -1) 1120 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1121 else 1122 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1123 } 1124 1125 void 1126 ERR_add_error_vdata(int num, va_list args) 1127 { 1128 char format[129]; 1129 char *errbuf; 1130 int i; 1131 1132 format[0] = '\0'; 1133 for (i = 0; i < num; i++) { 1134 if (strlcat(format, "%s", sizeof(format)) >= sizeof(format)) { 1135 ERR_set_error_data("too many errors", ERR_TXT_STRING); 1136 return; 1137 } 1138 } 1139 if (vasprintf(&errbuf, format, args) == -1) 1140 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1141 else 1142 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1143 } 1144 1145 void 1146 ERR_add_error_data(int num, ...) 1147 { 1148 va_list args; 1149 va_start(args, num); 1150 ERR_add_error_vdata(num, args); 1151 va_end(args); 1152 } 1153 1154 int 1155 ERR_set_mark(void) 1156 { 1157 ERR_STATE *es; 1158 1159 es = ERR_get_state(); 1160 1161 if (es->bottom == es->top) 1162 return 0; 1163 es->err_flags[es->top] |= ERR_FLAG_MARK; 1164 return 1; 1165 } 1166 1167 int 1168 ERR_pop_to_mark(void) 1169 { 1170 ERR_STATE *es; 1171 1172 es = ERR_get_state(); 1173 1174 while (es->bottom != es->top && 1175 (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { 1176 err_clear(es, es->top); 1177 es->top -= 1; 1178 if (es->top == -1) 1179 es->top = ERR_NUM_ERRORS - 1; 1180 } 1181 1182 if (es->bottom == es->top) 1183 return 0; 1184 es->err_flags[es->top]&=~ERR_FLAG_MARK; 1185 return 1; 1186 } 1187