err.c revision 162912
1/* crypto/err/err.c */ 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) 1998-2001 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 <stdio.h> 113#include <stdarg.h> 114#include <string.h> 115#include "cryptlib.h" 116#include <openssl/lhash.h> 117#include <openssl/crypto.h> 118#include <openssl/buffer.h> 119#include <openssl/bio.h> 120#include <openssl/err.h> 121 122static void err_load_strings(int lib, ERR_STRING_DATA *str); 123 124static void ERR_STATE_free(ERR_STATE *s); 125#ifndef OPENSSL_NO_ERR 126static ERR_STRING_DATA ERR_str_libraries[]= 127 { 128{ERR_PACK(ERR_LIB_NONE,0,0) ,"unknown library"}, 129{ERR_PACK(ERR_LIB_SYS,0,0) ,"system library"}, 130{ERR_PACK(ERR_LIB_BN,0,0) ,"bignum routines"}, 131{ERR_PACK(ERR_LIB_RSA,0,0) ,"rsa routines"}, 132{ERR_PACK(ERR_LIB_DH,0,0) ,"Diffie-Hellman routines"}, 133{ERR_PACK(ERR_LIB_EVP,0,0) ,"digital envelope routines"}, 134{ERR_PACK(ERR_LIB_BUF,0,0) ,"memory buffer routines"}, 135{ERR_PACK(ERR_LIB_OBJ,0,0) ,"object identifier routines"}, 136{ERR_PACK(ERR_LIB_PEM,0,0) ,"PEM routines"}, 137{ERR_PACK(ERR_LIB_DSA,0,0) ,"dsa routines"}, 138{ERR_PACK(ERR_LIB_X509,0,0) ,"x509 certificate routines"}, 139{ERR_PACK(ERR_LIB_ASN1,0,0) ,"asn1 encoding routines"}, 140{ERR_PACK(ERR_LIB_CONF,0,0) ,"configuration file routines"}, 141{ERR_PACK(ERR_LIB_CRYPTO,0,0) ,"common libcrypto routines"}, 142{ERR_PACK(ERR_LIB_EC,0,0) ,"elliptic curve routines"}, 143{ERR_PACK(ERR_LIB_SSL,0,0) ,"SSL routines"}, 144{ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"}, 145{ERR_PACK(ERR_LIB_PKCS7,0,0) ,"PKCS7 routines"}, 146{ERR_PACK(ERR_LIB_X509V3,0,0) ,"X509 V3 routines"}, 147{ERR_PACK(ERR_LIB_PKCS12,0,0) ,"PKCS12 routines"}, 148{ERR_PACK(ERR_LIB_RAND,0,0) ,"random number generator"}, 149{ERR_PACK(ERR_LIB_DSO,0,0) ,"DSO support routines"}, 150{ERR_PACK(ERR_LIB_ENGINE,0,0) ,"engine routines"}, 151{ERR_PACK(ERR_LIB_OCSP,0,0) ,"OCSP routines"}, 152{0,NULL}, 153 }; 154 155static ERR_STRING_DATA ERR_str_functs[]= 156 { 157 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"}, 158 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"}, 159 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"}, 160 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"}, 161 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"}, 162 {ERR_PACK(0,SYS_F_BIND,0), "bind"}, 163 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"}, 164 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"}, 165#ifdef OPENSSL_SYS_WINDOWS 166 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"}, 167#endif 168 {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"}, 169 {ERR_PACK(0,SYS_F_FREAD,0), "fread"}, 170 {0,NULL}, 171 }; 172 173static ERR_STRING_DATA ERR_str_reasons[]= 174 { 175{ERR_R_SYS_LIB ,"system lib"}, 176{ERR_R_BN_LIB ,"BN lib"}, 177{ERR_R_RSA_LIB ,"RSA lib"}, 178{ERR_R_DH_LIB ,"DH lib"}, 179{ERR_R_EVP_LIB ,"EVP lib"}, 180{ERR_R_BUF_LIB ,"BUF lib"}, 181{ERR_R_OBJ_LIB ,"OBJ lib"}, 182{ERR_R_PEM_LIB ,"PEM lib"}, 183{ERR_R_DSA_LIB ,"DSA lib"}, 184{ERR_R_X509_LIB ,"X509 lib"}, 185{ERR_R_ASN1_LIB ,"ASN1 lib"}, 186{ERR_R_CONF_LIB ,"CONF lib"}, 187{ERR_R_CRYPTO_LIB ,"CRYPTO lib"}, 188{ERR_R_EC_LIB ,"EC lib"}, 189{ERR_R_SSL_LIB ,"SSL lib"}, 190{ERR_R_BIO_LIB ,"BIO lib"}, 191{ERR_R_PKCS7_LIB ,"PKCS7 lib"}, 192{ERR_R_X509V3_LIB ,"X509V3 lib"}, 193{ERR_R_PKCS12_LIB ,"PKCS12 lib"}, 194{ERR_R_RAND_LIB ,"RAND lib"}, 195{ERR_R_DSO_LIB ,"DSO lib"}, 196{ERR_R_ENGINE_LIB ,"ENGINE lib"}, 197{ERR_R_OCSP_LIB ,"OCSP lib"}, 198 199{ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"}, 200{ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"}, 201{ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"}, 202{ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"}, 203{ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"}, 204{ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"}, 205 206{ERR_R_FATAL ,"fatal"}, 207{ERR_R_MALLOC_FAILURE ,"malloc failure"}, 208{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"}, 209{ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"}, 210{ERR_R_INTERNAL_ERROR ,"internal error"}, 211{ERR_R_DISABLED ,"called a function that was disabled at compile-time"}, 212 213{0,NULL}, 214 }; 215#endif 216 217 218/* Define the predeclared (but externally opaque) "ERR_FNS" type */ 219struct st_ERR_FNS 220 { 221 /* Works on the "error_hash" string table */ 222 LHASH *(*cb_err_get)(int create); 223 void (*cb_err_del)(void); 224 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 225 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 226 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 227 /* Works on the "thread_hash" error-state table */ 228 LHASH *(*cb_thread_get)(int create); 229 void (*cb_thread_release)(LHASH **hash); 230 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 231 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 232 void (*cb_thread_del_item)(const ERR_STATE *); 233 /* Returns the next available error "library" numbers */ 234 int (*cb_get_next_lib)(void); 235 }; 236 237/* Predeclarations of the "err_defaults" functions */ 238static LHASH *int_err_get(int create); 239static void int_err_del(void); 240static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 241static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 242static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 243static LHASH *int_thread_get(int create); 244static void int_thread_release(LHASH **hash); 245static ERR_STATE *int_thread_get_item(const ERR_STATE *); 246static ERR_STATE *int_thread_set_item(ERR_STATE *); 247static void int_thread_del_item(const ERR_STATE *); 248static int int_err_get_next_lib(void); 249/* The static ERR_FNS table using these defaults functions */ 250static const ERR_FNS err_defaults = 251 { 252 int_err_get, 253 int_err_del, 254 int_err_get_item, 255 int_err_set_item, 256 int_err_del_item, 257 int_thread_get, 258 int_thread_release, 259 int_thread_get_item, 260 int_thread_set_item, 261 int_thread_del_item, 262 int_err_get_next_lib 263 }; 264 265/* The replacable table of ERR_FNS functions we use at run-time */ 266static const ERR_FNS *err_fns = NULL; 267 268/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 269#define ERRFN(a) err_fns->cb_##a 270 271/* The internal state used by "err_defaults" - as such, the setting, reading, 272 * creating, and deleting of this data should only be permitted via the 273 * "err_defaults" functions. This way, a linked module can completely defer all 274 * ERR state operation (together with requisite locking) to the implementations 275 * and state in the loading application. */ 276static LHASH *int_error_hash = NULL; 277static LHASH *int_thread_hash = NULL; 278static int int_thread_hash_references = 0; 279static int int_err_library_number= ERR_LIB_USER; 280 281/* Internal function that checks whether "err_fns" is set and if not, sets it to 282 * the defaults. */ 283static void err_fns_check(void) 284 { 285 if (err_fns) return; 286 287 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 288 if (!err_fns) 289 err_fns = &err_defaults; 290 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 291 } 292 293/* API functions to get or set the underlying ERR functions. */ 294 295const ERR_FNS *ERR_get_implementation(void) 296 { 297 err_fns_check(); 298 return err_fns; 299 } 300 301int ERR_set_implementation(const ERR_FNS *fns) 302 { 303 int ret = 0; 304 305 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 306 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 307 * an error is there?! */ 308 if (!err_fns) 309 { 310 err_fns = fns; 311 ret = 1; 312 } 313 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 314 return ret; 315 } 316 317/* These are the callbacks provided to "lh_new()" when creating the LHASH tables 318 * internal to the "err_defaults" implementation. */ 319 320/* static unsigned long err_hash(ERR_STRING_DATA *a); */ 321static unsigned long err_hash(const void *a_void); 322/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */ 323static int err_cmp(const void *a_void, const void *b_void); 324/* static unsigned long pid_hash(ERR_STATE *pid); */ 325static unsigned long pid_hash(const void *pid_void); 326/* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */ 327static int pid_cmp(const void *a_void,const void *pid_void); 328static unsigned long get_error_values(int inc,int top,const char **file,int *line, 329 const char **data,int *flags); 330 331/* The internal functions used in the "err_defaults" implementation */ 332 333static LHASH *int_err_get(int create) 334 { 335 LHASH *ret = NULL; 336 337 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 338 if (!int_error_hash && create) 339 { 340 CRYPTO_push_info("int_err_get (err.c)"); 341 int_error_hash = lh_new(err_hash, err_cmp); 342 CRYPTO_pop_info(); 343 } 344 if (int_error_hash) 345 ret = int_error_hash; 346 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 347 348 return ret; 349 } 350 351static void int_err_del(void) 352 { 353 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 354 if (int_error_hash) 355 { 356 lh_free(int_error_hash); 357 int_error_hash = NULL; 358 } 359 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 360 } 361 362static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) 363 { 364 ERR_STRING_DATA *p; 365 LHASH *hash; 366 367 err_fns_check(); 368 hash = ERRFN(err_get)(0); 369 if (!hash) 370 return NULL; 371 372 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 373 p = (ERR_STRING_DATA *)lh_retrieve(hash, d); 374 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 375 376 return p; 377 } 378 379static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) 380 { 381 ERR_STRING_DATA *p; 382 LHASH *hash; 383 384 err_fns_check(); 385 hash = ERRFN(err_get)(1); 386 if (!hash) 387 return NULL; 388 389 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 390 p = (ERR_STRING_DATA *)lh_insert(hash, d); 391 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 392 393 return p; 394 } 395 396static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) 397 { 398 ERR_STRING_DATA *p; 399 LHASH *hash; 400 401 err_fns_check(); 402 hash = ERRFN(err_get)(0); 403 if (!hash) 404 return NULL; 405 406 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 407 p = (ERR_STRING_DATA *)lh_delete(hash, d); 408 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 409 410 return p; 411 } 412 413static LHASH *int_thread_get(int create) 414 { 415 LHASH *ret = NULL; 416 417 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 418 if (!int_thread_hash && create) 419 { 420 CRYPTO_push_info("int_thread_get (err.c)"); 421 int_thread_hash = lh_new(pid_hash, pid_cmp); 422 CRYPTO_pop_info(); 423 } 424 if (int_thread_hash) 425 { 426 int_thread_hash_references++; 427 ret = int_thread_hash; 428 } 429 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 430 return ret; 431 } 432 433static void int_thread_release(LHASH **hash) 434 { 435 int i; 436 437 if (hash == NULL || *hash == NULL) 438 return; 439 440 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 441 442#ifdef REF_PRINT 443 fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR"); 444#endif 445 if (i > 0) return; 446#ifdef REF_CHECK 447 if (i < 0) 448 { 449 fprintf(stderr,"int_thread_release, bad reference count\n"); 450 abort(); /* ok */ 451 } 452#endif 453 *hash = NULL; 454 } 455 456static ERR_STATE *int_thread_get_item(const ERR_STATE *d) 457 { 458 ERR_STATE *p; 459 LHASH *hash; 460 461 err_fns_check(); 462 hash = ERRFN(thread_get)(0); 463 if (!hash) 464 return NULL; 465 466 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 467 p = (ERR_STATE *)lh_retrieve(hash, d); 468 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 469 470 ERRFN(thread_release)(&hash); 471 return p; 472 } 473 474static ERR_STATE *int_thread_set_item(ERR_STATE *d) 475 { 476 ERR_STATE *p; 477 LHASH *hash; 478 479 err_fns_check(); 480 hash = ERRFN(thread_get)(1); 481 if (!hash) 482 return NULL; 483 484 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 485 p = (ERR_STATE *)lh_insert(hash, d); 486 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 487 488 ERRFN(thread_release)(&hash); 489 return p; 490 } 491 492static void int_thread_del_item(const ERR_STATE *d) 493 { 494 ERR_STATE *p; 495 LHASH *hash; 496 497 err_fns_check(); 498 hash = ERRFN(thread_get)(0); 499 if (!hash) 500 return; 501 502 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 503 p = (ERR_STATE *)lh_delete(hash, d); 504 /* make sure we don't leak memory */ 505 if (int_thread_hash_references == 1 506 && int_thread_hash && (lh_num_items(int_thread_hash) == 0)) 507 { 508 lh_free(int_thread_hash); 509 int_thread_hash = NULL; 510 } 511 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 512 513 ERRFN(thread_release)(&hash); 514 if (p) 515 ERR_STATE_free(p); 516 } 517 518static int int_err_get_next_lib(void) 519 { 520 int ret; 521 522 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 523 ret = int_err_library_number++; 524 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 525 526 return ret; 527 } 528 529 530#ifndef OPENSSL_NO_ERR 531#define NUM_SYS_STR_REASONS 127 532#define LEN_SYS_STR_REASON 32 533 534static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 535/* SYS_str_reasons is filled with copies of strerror() results at 536 * initialization. 537 * 'errno' values up to 127 should cover all usual errors, 538 * others will be displayed numerically by ERR_error_string. 539 * It is crucial that we have something for each reason code 540 * that occurs in ERR_str_reasons, or bogus reason strings 541 * will be returned for SYSerr(), which always gets an errno 542 * value and never one of those 'standard' reason codes. */ 543 544static void build_SYS_str_reasons(void) 545 { 546 /* OPENSSL_malloc cannot be used here, use static storage instead */ 547 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 548 int i; 549 static int init = 1; 550 551 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 552 if (!init) 553 { 554 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 555 return; 556 } 557 558 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 559 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 560 if (!init) 561 { 562 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 563 return; 564 } 565 566 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) 567 { 568 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 569 570 str->error = (unsigned long)i; 571 if (str->string == NULL) 572 { 573 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 574 char *src = strerror(i); 575 if (src != NULL) 576 { 577 strncpy(*dest, src, sizeof *dest); 578 (*dest)[sizeof *dest - 1] = '\0'; 579 str->string = *dest; 580 } 581 } 582 if (str->string == NULL) 583 str->string = "unknown"; 584 } 585 586 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 587 * as required by ERR_load_strings. */ 588 589 init = 0; 590 591 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 592 } 593#endif 594 595#define err_clear_data(p,i) \ 596 do { \ 597 if (((p)->err_data[i] != NULL) && \ 598 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 599 { \ 600 OPENSSL_free((p)->err_data[i]); \ 601 (p)->err_data[i]=NULL; \ 602 } \ 603 (p)->err_data_flags[i]=0; \ 604 } while(0) 605 606#define err_clear(p,i) \ 607 do { \ 608 (p)->err_flags[i]=0; \ 609 (p)->err_buffer[i]=0; \ 610 err_clear_data(p,i); \ 611 (p)->err_file[i]=NULL; \ 612 (p)->err_line[i]= -1; \ 613 } while(0) 614 615static void ERR_STATE_free(ERR_STATE *s) 616 { 617 int i; 618 619 if (s == NULL) 620 return; 621 622 for (i=0; i<ERR_NUM_ERRORS; i++) 623 { 624 err_clear_data(s,i); 625 } 626 OPENSSL_free(s); 627 } 628 629void ERR_load_ERR_strings(void) 630 { 631 err_fns_check(); 632#ifndef OPENSSL_NO_ERR 633 err_load_strings(0,ERR_str_libraries); 634 err_load_strings(0,ERR_str_reasons); 635 err_load_strings(ERR_LIB_SYS,ERR_str_functs); 636 build_SYS_str_reasons(); 637 err_load_strings(ERR_LIB_SYS,SYS_str_reasons); 638#endif 639 } 640 641static void err_load_strings(int lib, ERR_STRING_DATA *str) 642 { 643 while (str->error) 644 { 645 if (lib) 646 str->error|=ERR_PACK(lib,0,0); 647 ERRFN(err_set_item)(str); 648 str++; 649 } 650 } 651 652void ERR_load_strings(int lib, ERR_STRING_DATA *str) 653 { 654 ERR_load_ERR_strings(); 655 err_load_strings(lib, str); 656 } 657 658void ERR_unload_strings(int lib, ERR_STRING_DATA *str) 659 { 660 while (str->error) 661 { 662 if (lib) 663 str->error|=ERR_PACK(lib,0,0); 664 ERRFN(err_del_item)(str); 665 str++; 666 } 667 } 668 669void ERR_free_strings(void) 670 { 671 err_fns_check(); 672 ERRFN(err_del)(); 673 } 674 675/********************************************************/ 676 677void ERR_put_error(int lib, int func, int reason, const char *file, 678 int line) 679 { 680 ERR_STATE *es; 681 682#ifdef _OSD_POSIX 683 /* In the BS2000-OSD POSIX subsystem, the compiler generates 684 * path names in the form "*POSIX(/etc/passwd)". 685 * This dirty hack strips them to something sensible. 686 * @@@ We shouldn't modify a const string, though. 687 */ 688 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) { 689 char *end; 690 691 /* Skip the "*POSIX(" prefix */ 692 file += sizeof("*POSIX(")-1; 693 end = &file[strlen(file)-1]; 694 if (*end == ')') 695 *end = '\0'; 696 /* Optional: use the basename of the path only. */ 697 if ((end = strrchr(file, '/')) != NULL) 698 file = &end[1]; 699 } 700#endif 701 es=ERR_get_state(); 702 703 es->top=(es->top+1)%ERR_NUM_ERRORS; 704 if (es->top == es->bottom) 705 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; 706 es->err_flags[es->top]=0; 707 es->err_buffer[es->top]=ERR_PACK(lib,func,reason); 708 es->err_file[es->top]=file; 709 es->err_line[es->top]=line; 710 err_clear_data(es,es->top); 711 } 712 713void ERR_clear_error(void) 714 { 715 int i; 716 ERR_STATE *es; 717 718 es=ERR_get_state(); 719 720 for (i=0; i<ERR_NUM_ERRORS; i++) 721 { 722 err_clear(es,i); 723 } 724 es->top=es->bottom=0; 725 } 726 727 728unsigned long ERR_get_error(void) 729 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); } 730 731unsigned long ERR_get_error_line(const char **file, 732 int *line) 733 { return(get_error_values(1,0,file,line,NULL,NULL)); } 734 735unsigned long ERR_get_error_line_data(const char **file, int *line, 736 const char **data, int *flags) 737 { return(get_error_values(1,0,file,line,data,flags)); } 738 739 740unsigned long ERR_peek_error(void) 741 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); } 742 743unsigned long ERR_peek_error_line(const char **file, int *line) 744 { return(get_error_values(0,0,file,line,NULL,NULL)); } 745 746unsigned long ERR_peek_error_line_data(const char **file, int *line, 747 const char **data, int *flags) 748 { return(get_error_values(0,0,file,line,data,flags)); } 749 750 751unsigned long ERR_peek_last_error(void) 752 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); } 753 754unsigned long ERR_peek_last_error_line(const char **file, int *line) 755 { return(get_error_values(0,1,file,line,NULL,NULL)); } 756 757unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 758 const char **data, int *flags) 759 { return(get_error_values(0,1,file,line,data,flags)); } 760 761 762static unsigned long get_error_values(int inc, int top, const char **file, int *line, 763 const char **data, int *flags) 764 { 765 int i=0; 766 ERR_STATE *es; 767 unsigned long ret; 768 769 es=ERR_get_state(); 770 771 if (inc && top) 772 { 773 if (file) *file = ""; 774 if (line) *line = 0; 775 if (data) *data = ""; 776 if (flags) *flags = 0; 777 778 return ERR_R_INTERNAL_ERROR; 779 } 780 781 if (es->bottom == es->top) return 0; 782 if (top) 783 i=es->top; /* last error */ 784 else 785 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */ 786 787 ret=es->err_buffer[i]; 788 if (inc) 789 { 790 es->bottom=i; 791 es->err_buffer[i]=0; 792 } 793 794 if ((file != NULL) && (line != NULL)) 795 { 796 if (es->err_file[i] == NULL) 797 { 798 *file="NA"; 799 if (line != NULL) *line=0; 800 } 801 else 802 { 803 *file=es->err_file[i]; 804 if (line != NULL) *line=es->err_line[i]; 805 } 806 } 807 808 if (data == NULL) 809 { 810 if (inc) 811 { 812 err_clear_data(es, i); 813 } 814 } 815 else 816 { 817 if (es->err_data[i] == NULL) 818 { 819 *data=""; 820 if (flags != NULL) *flags=0; 821 } 822 else 823 { 824 *data=es->err_data[i]; 825 if (flags != NULL) *flags=es->err_data_flags[i]; 826 } 827 } 828 return ret; 829 } 830 831void ERR_error_string_n(unsigned long e, char *buf, size_t len) 832 { 833 char lsbuf[64], fsbuf[64], rsbuf[64]; 834 const char *ls,*fs,*rs; 835 unsigned long l,f,r; 836 837 l=ERR_GET_LIB(e); 838 f=ERR_GET_FUNC(e); 839 r=ERR_GET_REASON(e); 840 841 ls=ERR_lib_error_string(e); 842 fs=ERR_func_error_string(e); 843 rs=ERR_reason_error_string(e); 844 845 if (ls == NULL) 846 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); 847 if (fs == NULL) 848 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); 849 if (rs == NULL) 850 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); 851 852 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf, 853 fs?fs:fsbuf, rs?rs:rsbuf); 854 if (strlen(buf) == len-1) 855 { 856 /* output may be truncated; make sure we always have 5 857 * colon-separated fields, i.e. 4 colons ... */ 858#define NUM_COLONS 4 859 if (len > NUM_COLONS) /* ... if possible */ 860 { 861 int i; 862 char *s = buf; 863 864 for (i = 0; i < NUM_COLONS; i++) 865 { 866 char *colon = strchr(s, ':'); 867 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i) 868 { 869 /* set colon no. i at last possible position 870 * (buf[len-1] is the terminating 0)*/ 871 colon = &buf[len-1] - NUM_COLONS + i; 872 *colon = ':'; 873 } 874 s = colon + 1; 875 } 876 } 877 } 878 } 879 880/* BAD for multi-threading: uses a local buffer if ret == NULL */ 881/* ERR_error_string_n should be used instead for ret != NULL 882 * as ERR_error_string cannot know how large the buffer is */ 883char *ERR_error_string(unsigned long e, char *ret) 884 { 885 static char buf[256]; 886 887 if (ret == NULL) ret=buf; 888 ERR_error_string_n(e, ret, 256); 889 890 return ret; 891 } 892 893LHASH *ERR_get_string_table(void) 894 { 895 err_fns_check(); 896 return ERRFN(err_get)(0); 897 } 898 899LHASH *ERR_get_err_state_table(void) 900 { 901 err_fns_check(); 902 return ERRFN(thread_get)(0); 903 } 904 905void ERR_release_err_state_table(LHASH **hash) 906 { 907 err_fns_check(); 908 ERRFN(thread_release)(hash); 909 } 910 911const char *ERR_lib_error_string(unsigned long e) 912 { 913 ERR_STRING_DATA d,*p; 914 unsigned long l; 915 916 err_fns_check(); 917 l=ERR_GET_LIB(e); 918 d.error=ERR_PACK(l,0,0); 919 p=ERRFN(err_get_item)(&d); 920 return((p == NULL)?NULL:p->string); 921 } 922 923const char *ERR_func_error_string(unsigned long e) 924 { 925 ERR_STRING_DATA d,*p; 926 unsigned long l,f; 927 928 err_fns_check(); 929 l=ERR_GET_LIB(e); 930 f=ERR_GET_FUNC(e); 931 d.error=ERR_PACK(l,f,0); 932 p=ERRFN(err_get_item)(&d); 933 return((p == NULL)?NULL:p->string); 934 } 935 936const char *ERR_reason_error_string(unsigned long e) 937 { 938 ERR_STRING_DATA d,*p=NULL; 939 unsigned long l,r; 940 941 err_fns_check(); 942 l=ERR_GET_LIB(e); 943 r=ERR_GET_REASON(e); 944 d.error=ERR_PACK(l,0,r); 945 p=ERRFN(err_get_item)(&d); 946 if (!p) 947 { 948 d.error=ERR_PACK(0,0,r); 949 p=ERRFN(err_get_item)(&d); 950 } 951 return((p == NULL)?NULL:p->string); 952 } 953 954/* static unsigned long err_hash(ERR_STRING_DATA *a) */ 955static unsigned long err_hash(const void *a_void) 956 { 957 unsigned long ret,l; 958 959 l=((const ERR_STRING_DATA *)a_void)->error; 960 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 961 return(ret^ret%19*13); 962 } 963 964/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */ 965static int err_cmp(const void *a_void, const void *b_void) 966 { 967 return((int)(((const ERR_STRING_DATA *)a_void)->error - 968 ((const ERR_STRING_DATA *)b_void)->error)); 969 } 970 971/* static unsigned long pid_hash(ERR_STATE *a) */ 972static unsigned long pid_hash(const void *a_void) 973 { 974 return(((const ERR_STATE *)a_void)->pid*13); 975 } 976 977/* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */ 978static int pid_cmp(const void *a_void, const void *b_void) 979 { 980 return((int)((long)((const ERR_STATE *)a_void)->pid - 981 (long)((const ERR_STATE *)b_void)->pid)); 982 } 983 984void ERR_remove_state(unsigned long pid) 985 { 986 ERR_STATE tmp; 987 988 err_fns_check(); 989 if (pid == 0) 990 pid=(unsigned long)CRYPTO_thread_id(); 991 tmp.pid=pid; 992 /* thread_del_item automatically destroys the LHASH if the number of 993 * items reaches zero. */ 994 ERRFN(thread_del_item)(&tmp); 995 } 996 997ERR_STATE *ERR_get_state(void) 998 { 999 static ERR_STATE fallback; 1000 ERR_STATE *ret,tmp,*tmpp=NULL; 1001 int i; 1002 unsigned long pid; 1003 1004 err_fns_check(); 1005 pid=(unsigned long)CRYPTO_thread_id(); 1006 tmp.pid=pid; 1007 ret=ERRFN(thread_get_item)(&tmp); 1008 1009 /* ret == the error state, if NULL, make a new one */ 1010 if (ret == NULL) 1011 { 1012 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); 1013 if (ret == NULL) return(&fallback); 1014 ret->pid=pid; 1015 ret->top=0; 1016 ret->bottom=0; 1017 for (i=0; i<ERR_NUM_ERRORS; i++) 1018 { 1019 ret->err_data[i]=NULL; 1020 ret->err_data_flags[i]=0; 1021 } 1022 tmpp = ERRFN(thread_set_item)(ret); 1023 /* To check if insertion failed, do a get. */ 1024 if (ERRFN(thread_get_item)(ret) != ret) 1025 { 1026 ERR_STATE_free(ret); /* could not insert it */ 1027 return(&fallback); 1028 } 1029 /* If a race occured in this function and we came second, tmpp 1030 * is the first one that we just replaced. */ 1031 if (tmpp) 1032 ERR_STATE_free(tmpp); 1033 } 1034 return ret; 1035 } 1036 1037int ERR_get_next_error_library(void) 1038 { 1039 err_fns_check(); 1040 return ERRFN(get_next_lib)(); 1041 } 1042 1043void ERR_set_error_data(char *data, int flags) 1044 { 1045 ERR_STATE *es; 1046 int i; 1047 1048 es=ERR_get_state(); 1049 1050 i=es->top; 1051 if (i == 0) 1052 i=ERR_NUM_ERRORS-1; 1053 1054 err_clear_data(es,i); 1055 es->err_data[i]=data; 1056 es->err_data_flags[i]=flags; 1057 } 1058 1059void ERR_add_error_data(int num, ...) 1060 { 1061 va_list args; 1062 int i,n,s; 1063 char *str,*p,*a; 1064 1065 s=80; 1066 str=OPENSSL_malloc(s+1); 1067 if (str == NULL) return; 1068 str[0]='\0'; 1069 1070 va_start(args, num); 1071 n=0; 1072 for (i=0; i<num; i++) 1073 { 1074 a=va_arg(args, char*); 1075 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 1076 if (a != NULL) 1077 { 1078 n+=strlen(a); 1079 if (n > s) 1080 { 1081 s=n+20; 1082 p=OPENSSL_realloc(str,s+1); 1083 if (p == NULL) 1084 { 1085 OPENSSL_free(str); 1086 goto err; 1087 } 1088 else 1089 str=p; 1090 } 1091 BUF_strlcat(str,a,(size_t)s+1); 1092 } 1093 } 1094 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); 1095 1096err: 1097 va_end(args); 1098 } 1099 1100int ERR_set_mark(void) 1101 { 1102 ERR_STATE *es; 1103 1104 es=ERR_get_state(); 1105 1106 if (es->bottom == es->top) return 0; 1107 es->err_flags[es->top]|=ERR_FLAG_MARK; 1108 return 1; 1109 } 1110 1111int ERR_pop_to_mark(void) 1112 { 1113 ERR_STATE *es; 1114 1115 es=ERR_get_state(); 1116 1117 while(es->bottom != es->top 1118 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) 1119 { 1120 err_clear(es,es->top); 1121 es->top-=1; 1122 if (es->top == -1) es->top=ERR_NUM_ERRORS-1; 1123 } 1124 1125 if (es->bottom == es->top) return 0; 1126 es->err_flags[es->top]&=~ERR_FLAG_MARK; 1127 return 1; 1128 } 1129