1 /* $OpenBSD: err.c,v 1.40 2014/10/05 15:21:48 deraadt 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 <stdarg.h> 113 #include <stdio.h> 114 #include <string.h> 115 116 #include <openssl/opensslconf.h> 117 118 #include <openssl/bio.h> 119 #include <openssl/buffer.h> 120 #include <openssl/crypto.h> 121 #include <openssl/err.h> 122 #include <openssl/lhash.h> 123 124 DECLARE_LHASH_OF(ERR_STRING_DATA); 125 DECLARE_LHASH_OF(ERR_STATE); 126 127 static void err_load_strings(int lib, ERR_STRING_DATA *str); 128 129 static void ERR_STATE_free(ERR_STATE *s); 130 #ifndef OPENSSL_NO_ERR 131 static ERR_STRING_DATA ERR_str_libraries[] = { 132 {ERR_PACK(ERR_LIB_NONE,0,0), "unknown library"}, 133 {ERR_PACK(ERR_LIB_SYS,0,0), "system library"}, 134 {ERR_PACK(ERR_LIB_BN,0,0), "bignum routines"}, 135 {ERR_PACK(ERR_LIB_RSA,0,0), "rsa routines"}, 136 {ERR_PACK(ERR_LIB_DH,0,0), "Diffie-Hellman routines"}, 137 {ERR_PACK(ERR_LIB_EVP,0,0), "digital envelope routines"}, 138 {ERR_PACK(ERR_LIB_BUF,0,0), "memory buffer routines"}, 139 {ERR_PACK(ERR_LIB_OBJ,0,0), "object identifier routines"}, 140 {ERR_PACK(ERR_LIB_PEM,0,0), "PEM routines"}, 141 {ERR_PACK(ERR_LIB_DSA,0,0), "dsa routines"}, 142 {ERR_PACK(ERR_LIB_X509,0,0), "x509 certificate routines"}, 143 {ERR_PACK(ERR_LIB_ASN1,0,0), "asn1 encoding routines"}, 144 {ERR_PACK(ERR_LIB_CONF,0,0), "configuration file routines"}, 145 {ERR_PACK(ERR_LIB_CRYPTO,0,0), "common libcrypto routines"}, 146 {ERR_PACK(ERR_LIB_EC,0,0), "elliptic curve routines"}, 147 {ERR_PACK(ERR_LIB_SSL,0,0), "SSL routines"}, 148 {ERR_PACK(ERR_LIB_BIO,0,0), "BIO routines"}, 149 {ERR_PACK(ERR_LIB_PKCS7,0,0), "PKCS7 routines"}, 150 {ERR_PACK(ERR_LIB_X509V3,0,0), "X509 V3 routines"}, 151 {ERR_PACK(ERR_LIB_PKCS12,0,0), "PKCS12 routines"}, 152 {ERR_PACK(ERR_LIB_RAND,0,0), "random number generator"}, 153 {ERR_PACK(ERR_LIB_DSO,0,0), "DSO support routines"}, 154 {ERR_PACK(ERR_LIB_TS,0,0), "time stamp routines"}, 155 {ERR_PACK(ERR_LIB_ENGINE,0,0), "engine routines"}, 156 {ERR_PACK(ERR_LIB_OCSP,0,0), "OCSP routines"}, 157 {ERR_PACK(ERR_LIB_FIPS,0,0), "FIPS routines"}, 158 {ERR_PACK(ERR_LIB_CMS,0,0), "CMS routines"}, 159 {ERR_PACK(ERR_LIB_HMAC,0,0), "HMAC routines"}, 160 {ERR_PACK(ERR_LIB_GOST,0,0), "GOST routines"}, 161 {0, NULL}, 162 }; 163 164 static ERR_STRING_DATA ERR_str_functs[] = { 165 {ERR_PACK(0,SYS_F_FOPEN, 0), "fopen"}, 166 {ERR_PACK(0,SYS_F_CONNECT, 0), "connect"}, 167 {ERR_PACK(0,SYS_F_GETSERVBYNAME, 0), "getservbyname"}, 168 {ERR_PACK(0,SYS_F_SOCKET, 0), "socket"}, 169 {ERR_PACK(0,SYS_F_IOCTLSOCKET, 0), "ioctl"}, 170 {ERR_PACK(0,SYS_F_BIND, 0), "bind"}, 171 {ERR_PACK(0,SYS_F_LISTEN, 0), "listen"}, 172 {ERR_PACK(0,SYS_F_ACCEPT, 0), "accept"}, 173 {ERR_PACK(0,SYS_F_OPENDIR, 0), "opendir"}, 174 {ERR_PACK(0,SYS_F_FREAD, 0), "fread"}, 175 {0, NULL}, 176 }; 177 178 static ERR_STRING_DATA ERR_str_reasons[] = { 179 {ERR_R_SYS_LIB, "system lib"}, 180 {ERR_R_BN_LIB, "BN lib"}, 181 {ERR_R_RSA_LIB, "RSA lib"}, 182 {ERR_R_DH_LIB, "DH lib"}, 183 {ERR_R_EVP_LIB, "EVP lib"}, 184 {ERR_R_BUF_LIB, "BUF lib"}, 185 {ERR_R_OBJ_LIB, "OBJ lib"}, 186 {ERR_R_PEM_LIB, "PEM lib"}, 187 {ERR_R_DSA_LIB, "DSA lib"}, 188 {ERR_R_X509_LIB, "X509 lib"}, 189 {ERR_R_ASN1_LIB, "ASN1 lib"}, 190 {ERR_R_CONF_LIB, "CONF lib"}, 191 {ERR_R_CRYPTO_LIB, "CRYPTO lib"}, 192 {ERR_R_EC_LIB, "EC lib"}, 193 {ERR_R_SSL_LIB, "SSL lib"}, 194 {ERR_R_BIO_LIB, "BIO lib"}, 195 {ERR_R_PKCS7_LIB, "PKCS7 lib"}, 196 {ERR_R_X509V3_LIB, "X509V3 lib"}, 197 {ERR_R_PKCS12_LIB, "PKCS12 lib"}, 198 {ERR_R_RAND_LIB, "RAND lib"}, 199 {ERR_R_DSO_LIB, "DSO lib"}, 200 {ERR_R_ENGINE_LIB, "ENGINE lib"}, 201 {ERR_R_OCSP_LIB, "OCSP lib"}, 202 {ERR_R_TS_LIB, "TS lib"}, 203 204 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"}, 205 {ERR_R_BAD_ASN1_OBJECT_HEADER, "bad asn1 object header"}, 206 {ERR_R_BAD_GET_ASN1_OBJECT_CALL, "bad get asn1 object call"}, 207 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE, "expecting an asn1 sequence"}, 208 {ERR_R_ASN1_LENGTH_MISMATCH, "asn1 length mismatch"}, 209 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"}, 210 211 {ERR_R_FATAL, "fatal"}, 212 {ERR_R_MALLOC_FAILURE, "malloc failure"}, 213 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, "called a function you should not call"}, 214 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"}, 215 {ERR_R_INTERNAL_ERROR, "internal error"}, 216 {ERR_R_DISABLED , "called a function that was disabled at compile-time"}, 217 218 {0, NULL}, 219 }; 220 #endif 221 222 223 /* Define the predeclared (but externally opaque) "ERR_FNS" type */ 224 struct st_ERR_FNS { 225 /* Works on the "error_hash" string table */ 226 LHASH_OF(ERR_STRING_DATA) *(*cb_err_get)(int create); 227 void (*cb_err_del)(void); 228 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 229 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 230 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 231 /* Works on the "thread_hash" error-state table */ 232 LHASH_OF(ERR_STATE) *(*cb_thread_get)(int create); 233 void (*cb_thread_release)(LHASH_OF(ERR_STATE) **hash); 234 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 235 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 236 void (*cb_thread_del_item)(const ERR_STATE *); 237 /* Returns the next available error "library" numbers */ 238 int (*cb_get_next_lib)(void); 239 }; 240 241 /* Predeclarations of the "err_defaults" functions */ 242 static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create); 243 static void int_err_del(void); 244 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 245 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 246 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 247 static LHASH_OF(ERR_STATE) *int_thread_get(int create); 248 static void int_thread_release(LHASH_OF(ERR_STATE) **hash); 249 static ERR_STATE *int_thread_get_item(const ERR_STATE *); 250 static ERR_STATE *int_thread_set_item(ERR_STATE *); 251 static void int_thread_del_item(const ERR_STATE *); 252 static int int_err_get_next_lib(void); 253 254 /* The static ERR_FNS table using these defaults functions */ 255 static const ERR_FNS err_defaults = { 256 int_err_get, 257 int_err_del, 258 int_err_get_item, 259 int_err_set_item, 260 int_err_del_item, 261 int_thread_get, 262 int_thread_release, 263 int_thread_get_item, 264 int_thread_set_item, 265 int_thread_del_item, 266 int_err_get_next_lib 267 }; 268 269 /* The replacable table of ERR_FNS functions we use at run-time */ 270 static const ERR_FNS *err_fns = NULL; 271 272 /* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 273 #define ERRFN(a) err_fns->cb_##a 274 275 /* The internal state used by "err_defaults" - as such, the setting, reading, 276 * creating, and deleting of this data should only be permitted via the 277 * "err_defaults" functions. This way, a linked module can completely defer all 278 * ERR state operation (together with requisite locking) to the implementations 279 * and state in the loading application. */ 280 static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; 281 static LHASH_OF(ERR_STATE) *int_thread_hash = NULL; 282 static int int_thread_hash_references = 0; 283 static int int_err_library_number = ERR_LIB_USER; 284 285 /* Internal function that checks whether "err_fns" is set and if not, sets it to 286 * the defaults. */ 287 static void 288 err_fns_check(void) 289 { 290 if (err_fns) 291 return; 292 293 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 294 if (!err_fns) 295 err_fns = &err_defaults; 296 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 297 } 298 299 /* API functions to get or set the underlying ERR functions. */ 300 301 const ERR_FNS * 302 ERR_get_implementation(void) 303 { 304 err_fns_check(); 305 return err_fns; 306 } 307 308 int 309 ERR_set_implementation(const ERR_FNS *fns) 310 { 311 int ret = 0; 312 313 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 314 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 315 * an error is there?! */ 316 if (!err_fns) { 317 err_fns = fns; 318 ret = 1; 319 } 320 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 321 return ret; 322 } 323 324 /* These are the callbacks provided to "lh_new()" when creating the LHASH tables 325 * internal to the "err_defaults" implementation. */ 326 327 static unsigned long get_error_values(int inc, int top, const char **file, 328 int *line, const char **data, int *flags); 329 330 /* The internal functions used in the "err_defaults" implementation */ 331 332 static unsigned long 333 err_string_data_hash(const ERR_STRING_DATA *a) 334 { 335 unsigned long ret, l; 336 337 l = a->error; 338 ret = l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 339 return (ret^ret % 19*13); 340 } 341 static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA) 342 343 static int 344 err_string_data_cmp(const ERR_STRING_DATA *a, const ERR_STRING_DATA *b) 345 { 346 return (int)(a->error - b->error); 347 } 348 static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA) 349 350 static 351 LHASH_OF(ERR_STRING_DATA) *int_err_get(int create) 352 { 353 LHASH_OF(ERR_STRING_DATA) *ret = NULL; 354 355 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 356 if (!int_error_hash && create) { 357 CRYPTO_push_info("int_err_get (err.c)"); 358 int_error_hash = lh_ERR_STRING_DATA_new(); 359 CRYPTO_pop_info(); 360 } 361 if (int_error_hash) 362 ret = int_error_hash; 363 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 364 365 return ret; 366 } 367 368 static void 369 int_err_del(void) 370 { 371 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 372 if (int_error_hash) { 373 lh_ERR_STRING_DATA_free(int_error_hash); 374 int_error_hash = NULL; 375 } 376 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 377 } 378 379 static ERR_STRING_DATA * 380 int_err_get_item(const ERR_STRING_DATA *d) 381 { 382 ERR_STRING_DATA *p; 383 LHASH_OF(ERR_STRING_DATA) *hash; 384 385 err_fns_check(); 386 hash = ERRFN(err_get)(0); 387 if (!hash) 388 return NULL; 389 390 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 391 p = lh_ERR_STRING_DATA_retrieve(hash, d); 392 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 393 394 return p; 395 } 396 397 static ERR_STRING_DATA * 398 int_err_set_item(ERR_STRING_DATA *d) 399 { 400 ERR_STRING_DATA *p; 401 LHASH_OF(ERR_STRING_DATA) *hash; 402 403 err_fns_check(); 404 hash = ERRFN(err_get)(1); 405 if (!hash) 406 return NULL; 407 408 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 409 p = lh_ERR_STRING_DATA_insert(hash, d); 410 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 411 412 return p; 413 } 414 415 static ERR_STRING_DATA * 416 int_err_del_item(ERR_STRING_DATA *d) 417 { 418 ERR_STRING_DATA *p; 419 LHASH_OF(ERR_STRING_DATA) *hash; 420 421 err_fns_check(); 422 hash = ERRFN(err_get)(0); 423 if (!hash) 424 return NULL; 425 426 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 427 p = lh_ERR_STRING_DATA_delete(hash, d); 428 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 429 430 return p; 431 } 432 433 static unsigned long 434 err_state_hash(const ERR_STATE *a) 435 { 436 return CRYPTO_THREADID_hash(&a->tid) * 13; 437 } 438 static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) 439 440 static int 441 err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) 442 { 443 return CRYPTO_THREADID_cmp(&a->tid, &b->tid); 444 } 445 static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) 446 447 static 448 LHASH_OF(ERR_STATE) *int_thread_get(int create) 449 { 450 LHASH_OF(ERR_STATE) *ret = NULL; 451 452 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 453 if (!int_thread_hash && create) { 454 CRYPTO_push_info("int_thread_get (err.c)"); 455 int_thread_hash = lh_ERR_STATE_new(); 456 CRYPTO_pop_info(); 457 } 458 if (int_thread_hash) { 459 int_thread_hash_references++; 460 ret = int_thread_hash; 461 } 462 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 463 return ret; 464 } 465 466 static void 467 int_thread_release(LHASH_OF(ERR_STATE) **hash) 468 { 469 int i; 470 471 if (hash == NULL || *hash == NULL) 472 return; 473 474 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 475 if (i > 0) 476 return; 477 478 *hash = NULL; 479 } 480 481 static ERR_STATE * 482 int_thread_get_item(const ERR_STATE *d) 483 { 484 ERR_STATE *p; 485 LHASH_OF(ERR_STATE) *hash; 486 487 err_fns_check(); 488 hash = ERRFN(thread_get)(0); 489 if (!hash) 490 return NULL; 491 492 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 493 p = lh_ERR_STATE_retrieve(hash, d); 494 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 495 496 ERRFN(thread_release)(&hash); 497 return p; 498 } 499 500 static ERR_STATE * 501 int_thread_set_item(ERR_STATE *d) 502 { 503 ERR_STATE *p; 504 LHASH_OF(ERR_STATE) *hash; 505 506 err_fns_check(); 507 hash = ERRFN(thread_get)(1); 508 if (!hash) 509 return NULL; 510 511 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 512 p = lh_ERR_STATE_insert(hash, d); 513 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 514 515 ERRFN(thread_release)(&hash); 516 return p; 517 } 518 519 static void 520 int_thread_del_item(const ERR_STATE *d) 521 { 522 ERR_STATE *p; 523 LHASH_OF(ERR_STATE) *hash; 524 525 err_fns_check(); 526 hash = ERRFN(thread_get)(0); 527 if (!hash) 528 return; 529 530 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 531 p = lh_ERR_STATE_delete(hash, d); 532 /* make sure we don't leak memory */ 533 if (int_thread_hash_references == 1 && 534 int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) { 535 lh_ERR_STATE_free(int_thread_hash); 536 int_thread_hash = NULL; 537 } 538 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 539 540 ERRFN(thread_release)(&hash); 541 if (p) 542 ERR_STATE_free(p); 543 } 544 545 static int 546 int_err_get_next_lib(void) 547 { 548 int ret; 549 550 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 551 ret = int_err_library_number++; 552 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 553 554 return ret; 555 } 556 557 558 #ifndef OPENSSL_NO_ERR 559 #define NUM_SYS_STR_REASONS 127 560 #define LEN_SYS_STR_REASON 32 561 562 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 563 /* SYS_str_reasons is filled with copies of strerror() results at 564 * initialization. 565 * 'errno' values up to 127 should cover all usual errors, 566 * others will be displayed numerically by ERR_error_string. 567 * It is crucial that we have something for each reason code 568 * that occurs in ERR_str_reasons, or bogus reason strings 569 * will be returned for SYSerr(), which always gets an errno 570 * value and never one of those 'standard' reason codes. */ 571 572 static void 573 build_SYS_str_reasons(void) 574 { 575 /* malloc cannot be used here, use static storage instead */ 576 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 577 int i; 578 static int init = 1; 579 580 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 581 if (!init) { 582 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 583 return; 584 } 585 586 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 587 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 588 if (!init) { 589 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 590 return; 591 } 592 593 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { 594 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 595 596 str->error = (unsigned long)i; 597 if (str->string == NULL) { 598 char (*dest)[LEN_SYS_STR_REASON] = 599 &(strerror_tab[i - 1]); 600 const char *src = strerror(i); 601 if (src != NULL) { 602 strlcpy(*dest, src, sizeof *dest); 603 str->string = *dest; 604 } 605 } 606 if (str->string == NULL) 607 str->string = "unknown"; 608 } 609 610 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 611 * as required by ERR_load_strings. */ 612 613 init = 0; 614 615 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 616 } 617 #endif 618 619 #define err_clear_data(p,i) \ 620 do { \ 621 if (((p)->err_data[i] != NULL) && \ 622 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) { \ 623 free((p)->err_data[i]); \ 624 (p)->err_data[i] = NULL; \ 625 } \ 626 (p)->err_data_flags[i] = 0; \ 627 } while(0) 628 629 #define err_clear(p,i) \ 630 do { \ 631 (p)->err_flags[i] = 0; \ 632 (p)->err_buffer[i] = 0; \ 633 err_clear_data(p, i); \ 634 (p)->err_file[i] = NULL; \ 635 (p)->err_line[i] = -1; \ 636 } while(0) 637 638 static void 639 ERR_STATE_free(ERR_STATE *s) 640 { 641 int i; 642 643 if (s == NULL) 644 return; 645 646 for (i = 0; i < ERR_NUM_ERRORS; i++) { 647 err_clear_data(s, i); 648 } 649 free(s); 650 } 651 652 void 653 ERR_load_ERR_strings(void) 654 { 655 err_fns_check(); 656 #ifndef OPENSSL_NO_ERR 657 err_load_strings(0, ERR_str_libraries); 658 err_load_strings(0, ERR_str_reasons); 659 err_load_strings(ERR_LIB_SYS, ERR_str_functs); 660 build_SYS_str_reasons(); 661 err_load_strings(ERR_LIB_SYS, SYS_str_reasons); 662 #endif 663 } 664 665 static void 666 err_load_strings(int lib, ERR_STRING_DATA *str) 667 { 668 while (str->error) { 669 if (lib) 670 str->error |= ERR_PACK(lib, 0, 0); 671 ERRFN(err_set_item)(str); 672 str++; 673 } 674 } 675 676 void 677 ERR_load_strings(int lib, ERR_STRING_DATA *str) 678 { 679 ERR_load_ERR_strings(); 680 err_load_strings(lib, str); 681 } 682 683 void 684 ERR_unload_strings(int lib, ERR_STRING_DATA *str) 685 { 686 while (str->error) { 687 if (lib) 688 str->error |= ERR_PACK(lib, 0, 0); 689 ERRFN(err_del_item)(str); 690 str++; 691 } 692 } 693 694 void 695 ERR_free_strings(void) 696 { 697 err_fns_check(); 698 ERRFN(err_del)(); 699 } 700 701 /********************************************************/ 702 703 void 704 ERR_put_error(int lib, int func, int reason, const char *file, int line) 705 { 706 ERR_STATE *es; 707 int save_errno = errno; 708 709 es = ERR_get_state(); 710 711 es->top = (es->top + 1) % ERR_NUM_ERRORS; 712 if (es->top == es->bottom) 713 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; 714 es->err_flags[es->top] = 0; 715 es->err_buffer[es->top] = ERR_PACK(lib, func, reason); 716 es->err_file[es->top] = file; 717 es->err_line[es->top] = line; 718 err_clear_data(es, es->top); 719 errno = save_errno; 720 } 721 722 void 723 ERR_clear_error(void) 724 { 725 int i; 726 ERR_STATE *es; 727 728 es = ERR_get_state(); 729 730 for (i = 0; i < ERR_NUM_ERRORS; i++) { 731 err_clear(es, i); 732 } 733 es->top = es->bottom = 0; 734 } 735 736 737 unsigned long 738 ERR_get_error(void) 739 { 740 return (get_error_values(1, 0, NULL, NULL, NULL, NULL)); 741 } 742 743 unsigned long 744 ERR_get_error_line(const char **file, int *line) 745 { 746 return (get_error_values(1, 0, file, line, NULL, NULL)); 747 } 748 749 unsigned long 750 ERR_get_error_line_data(const char **file, int *line, 751 const char **data, int *flags) 752 { 753 return (get_error_values(1, 0, file, line, data, flags)); 754 } 755 756 757 unsigned long 758 ERR_peek_error(void) 759 { 760 return (get_error_values(0, 0, NULL, NULL, NULL, NULL)); 761 } 762 763 unsigned long 764 ERR_peek_error_line(const char **file, int *line) 765 { 766 return (get_error_values(0, 0, file, line, NULL, NULL)); 767 } 768 769 unsigned long 770 ERR_peek_error_line_data(const char **file, int *line, 771 const char **data, int *flags) 772 { 773 return (get_error_values(0, 0, file, line, data, flags)); 774 } 775 776 unsigned long 777 ERR_peek_last_error(void) 778 { 779 return (get_error_values(0, 1, NULL, NULL, NULL, NULL)); 780 } 781 782 unsigned long 783 ERR_peek_last_error_line(const char **file, int *line) 784 { 785 return (get_error_values(0, 1, file, line, NULL, NULL)); 786 } 787 788 unsigned long 789 ERR_peek_last_error_line_data(const char **file, int *line, 790 const char **data, int *flags) 791 { 792 return (get_error_values(0, 1, file, line, data, flags)); 793 } 794 795 static unsigned long 796 get_error_values(int inc, int top, const char **file, int *line, 797 const char **data, int *flags) 798 { 799 int i = 0; 800 ERR_STATE *es; 801 unsigned long ret; 802 803 es = ERR_get_state(); 804 805 if (inc && top) { 806 if (file) 807 *file = ""; 808 if (line) 809 *line = 0; 810 if (data) 811 *data = ""; 812 if (flags) 813 *flags = 0; 814 815 return ERR_R_INTERNAL_ERROR; 816 } 817 818 if (es->bottom == es->top) 819 return 0; 820 if (top) 821 i = es->top; /* last error */ 822 else 823 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */ 824 825 ret = es->err_buffer[i]; 826 if (inc) { 827 es->bottom = i; 828 es->err_buffer[i] = 0; 829 } 830 831 if ((file != NULL) && (line != NULL)) { 832 if (es->err_file[i] == NULL) { 833 *file = "NA"; 834 if (line != NULL) 835 *line = 0; 836 } else { 837 *file = es->err_file[i]; 838 if (line != NULL) 839 *line = es->err_line[i]; 840 } 841 } 842 843 if (data == NULL) { 844 if (inc) { 845 err_clear_data(es, i); 846 } 847 } else { 848 if (es->err_data[i] == NULL) { 849 *data = ""; 850 if (flags != NULL) 851 *flags = 0; 852 } else { 853 *data = es->err_data[i]; 854 if (flags != NULL) 855 *flags = es->err_data_flags[i]; 856 } 857 } 858 return ret; 859 } 860 861 void 862 ERR_error_string_n(unsigned long e, char *buf, size_t len) 863 { 864 char lsbuf[30], fsbuf[30], rsbuf[30]; 865 const char *ls, *fs, *rs; 866 int l, f, r, ret; 867 868 l = ERR_GET_LIB(e); 869 f = ERR_GET_FUNC(e); 870 r = ERR_GET_REASON(e); 871 872 ls = ERR_lib_error_string(e); 873 fs = ERR_func_error_string(e); 874 rs = ERR_reason_error_string(e); 875 876 if (ls == NULL) { 877 (void) snprintf(lsbuf, sizeof(lsbuf), "lib(%d)", l); 878 ls = lsbuf; 879 } 880 if (fs == NULL) { 881 (void) snprintf(fsbuf, sizeof(fsbuf), "func(%d)", f); 882 fs = fsbuf; 883 } 884 if (rs == NULL) { 885 (void) snprintf(rsbuf, sizeof(rsbuf), "reason(%d)", r); 886 rs = rsbuf; 887 } 888 889 ret = snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs); 890 if (ret == -1) 891 return; /* can't happen, and can't do better if it does */ 892 if (ret >= len) { 893 /* output may be truncated; make sure we always have 5 894 * colon-separated fields, i.e. 4 colons ... */ 895 #define NUM_COLONS 4 896 if (len > NUM_COLONS) /* ... if possible */ 897 { 898 int i; 899 char *s = buf; 900 901 for (i = 0; i < NUM_COLONS; i++) { 902 char *colon = strchr(s, ':'); 903 if (colon == NULL || 904 colon > &buf[len - 1] - NUM_COLONS + i) { 905 /* set colon no. i at last possible position 906 * (buf[len-1] is the terminating 0)*/ 907 colon = &buf[len - 1] - NUM_COLONS + i; 908 *colon = ':'; 909 } 910 s = colon + 1; 911 } 912 } 913 } 914 } 915 916 /* BAD for multi-threading: uses a local buffer if ret == NULL */ 917 /* ERR_error_string_n should be used instead for ret != NULL 918 * as ERR_error_string cannot know how large the buffer is */ 919 char * 920 ERR_error_string(unsigned long e, char *ret) 921 { 922 static char buf[256]; 923 924 if (ret == NULL) 925 ret = buf; 926 ERR_error_string_n(e, ret, 256); 927 928 return ret; 929 } 930 931 LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void) 932 { 933 err_fns_check(); 934 return ERRFN(err_get)(0); 935 } 936 937 LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void) 938 { 939 err_fns_check(); 940 return ERRFN(thread_get)(0); 941 } 942 943 void 944 ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash) 945 { 946 err_fns_check(); 947 ERRFN(thread_release)(hash); 948 } 949 950 const char * 951 ERR_lib_error_string(unsigned long e) 952 { 953 ERR_STRING_DATA d, *p; 954 unsigned long l; 955 956 err_fns_check(); 957 l = ERR_GET_LIB(e); 958 d.error = ERR_PACK(l, 0, 0); 959 p = ERRFN(err_get_item)(&d); 960 return ((p == NULL) ? NULL : p->string); 961 } 962 963 const char * 964 ERR_func_error_string(unsigned long e) 965 { 966 ERR_STRING_DATA d, *p; 967 unsigned long l, f; 968 969 err_fns_check(); 970 l = ERR_GET_LIB(e); 971 f = ERR_GET_FUNC(e); 972 d.error = ERR_PACK(l, f, 0); 973 p = ERRFN(err_get_item)(&d); 974 return ((p == NULL) ? NULL : p->string); 975 } 976 977 const char * 978 ERR_reason_error_string(unsigned long e) 979 { 980 ERR_STRING_DATA d, *p = NULL; 981 unsigned long l, r; 982 983 err_fns_check(); 984 l = ERR_GET_LIB(e); 985 r = ERR_GET_REASON(e); 986 d.error = ERR_PACK(l, 0, r); 987 p = ERRFN(err_get_item)(&d); 988 if (!p) { 989 d.error = ERR_PACK(0, 0, r); 990 p = ERRFN(err_get_item)(&d); 991 } 992 return ((p == NULL) ? NULL : p->string); 993 } 994 995 void 996 ERR_remove_thread_state(const CRYPTO_THREADID *id) 997 { 998 ERR_STATE tmp; 999 1000 if (id) 1001 CRYPTO_THREADID_cpy(&tmp.tid, id); 1002 else 1003 CRYPTO_THREADID_current(&tmp.tid); 1004 err_fns_check(); 1005 /* thread_del_item automatically destroys the LHASH if the number of 1006 * items reaches zero. */ 1007 ERRFN(thread_del_item)(&tmp); 1008 } 1009 1010 #ifndef OPENSSL_NO_DEPRECATED 1011 void 1012 ERR_remove_state(unsigned long pid) 1013 { 1014 ERR_remove_thread_state(NULL); 1015 } 1016 #endif 1017 1018 ERR_STATE * 1019 ERR_get_state(void) 1020 { 1021 static ERR_STATE fallback; 1022 ERR_STATE *ret, tmp, *tmpp = NULL; 1023 int i; 1024 CRYPTO_THREADID tid; 1025 1026 err_fns_check(); 1027 CRYPTO_THREADID_current(&tid); 1028 CRYPTO_THREADID_cpy(&tmp.tid, &tid); 1029 ret = ERRFN(thread_get_item)(&tmp); 1030 1031 /* ret == the error state, if NULL, make a new one */ 1032 if (ret == NULL) { 1033 ret = malloc(sizeof(ERR_STATE)); 1034 if (ret == NULL) 1035 return (&fallback); 1036 CRYPTO_THREADID_cpy(&ret->tid, &tid); 1037 ret->top = 0; 1038 ret->bottom = 0; 1039 for (i = 0; i < ERR_NUM_ERRORS; i++) { 1040 ret->err_data[i] = NULL; 1041 ret->err_data_flags[i] = 0; 1042 } 1043 tmpp = ERRFN(thread_set_item)(ret); 1044 /* To check if insertion failed, do a get. */ 1045 if (ERRFN(thread_get_item)(ret) != ret) { 1046 ERR_STATE_free(ret); /* could not insert it */ 1047 return (&fallback); 1048 } 1049 /* If a race occured in this function and we came second, tmpp 1050 * is the first one that we just replaced. */ 1051 if (tmpp) 1052 ERR_STATE_free(tmpp); 1053 } 1054 return ret; 1055 } 1056 1057 int 1058 ERR_get_next_error_library(void) 1059 { 1060 err_fns_check(); 1061 return ERRFN(get_next_lib)(); 1062 } 1063 1064 void 1065 ERR_set_error_data(char *data, int flags) 1066 { 1067 ERR_STATE *es; 1068 int i; 1069 1070 es = ERR_get_state(); 1071 1072 i = es->top; 1073 if (i == 0) 1074 i = ERR_NUM_ERRORS - 1; 1075 1076 err_clear_data(es, i); 1077 es->err_data[i] = data; 1078 es->err_data_flags[i] = flags; 1079 } 1080 1081 void 1082 ERR_asprintf_error_data(char * format, ...) { 1083 char *errbuf = NULL; 1084 va_list ap; 1085 int r; 1086 1087 va_start(ap, format); 1088 r = vasprintf(&errbuf, format, ap); 1089 va_end(ap); 1090 if (r == -1) 1091 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1092 else 1093 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1094 } 1095 void 1096 ERR_add_error_data(int num, ...) 1097 { 1098 va_list args; 1099 va_start(args, num); 1100 ERR_add_error_vdata(num, args); 1101 va_end(args); 1102 } 1103 1104 void 1105 ERR_add_error_vdata(int num, va_list args) 1106 { 1107 char format[129]; 1108 char *errbuf; 1109 int i; 1110 1111 format[0] = '\0'; 1112 for (i = 0; i < num; i++) { 1113 if (strlcat(format, "%s", sizeof(format)) >= sizeof(format)) { 1114 ERR_set_error_data("too many errors", ERR_TXT_STRING); 1115 return; 1116 } 1117 } 1118 if (vasprintf(&errbuf, format, args) == -1) 1119 ERR_set_error_data("malloc failed", ERR_TXT_STRING); 1120 else 1121 ERR_set_error_data(errbuf, ERR_TXT_MALLOCED|ERR_TXT_STRING); 1122 } 1123 1124 int 1125 ERR_set_mark(void) 1126 { 1127 ERR_STATE *es; 1128 1129 es = ERR_get_state(); 1130 1131 if (es->bottom == es->top) 1132 return 0; 1133 es->err_flags[es->top] |= ERR_FLAG_MARK; 1134 return 1; 1135 } 1136 1137 int 1138 ERR_pop_to_mark(void) 1139 { 1140 ERR_STATE *es; 1141 1142 es = ERR_get_state(); 1143 1144 while (es->bottom != es->top && 1145 (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { 1146 err_clear(es, es->top); 1147 es->top -= 1; 1148 if (es->top == -1) 1149 es->top = ERR_NUM_ERRORS - 1; 1150 } 1151 1152 if (es->bottom == es->top) 1153 return 0; 1154 es->err_flags[es->top]&=~ERR_FLAG_MARK; 1155 return 1; 1156 } 1157