err.c revision 109998
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 <openssl/lhash.h> 116#include <openssl/crypto.h> 117#include "cryptlib.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"}, 211 212{0,NULL}, 213 }; 214 215 216/* Define the predeclared (but externally opaque) "ERR_FNS" type */ 217struct st_ERR_FNS 218 { 219 /* Works on the "error_hash" string table */ 220 LHASH *(*cb_err_get)(int create); 221 void (*cb_err_del)(void); 222 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 223 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 224 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 225 /* Works on the "thread_hash" error-state table */ 226 LHASH *(*cb_thread_get)(int create); 227 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 228 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 229 void (*cb_thread_del_item)(const ERR_STATE *); 230 /* Returns the next available error "library" numbers */ 231 int (*cb_get_next_lib)(void); 232 }; 233 234/* Predeclarations of the "err_defaults" functions */ 235static LHASH *int_err_get(int create); 236static void int_err_del(void); 237static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 238static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 239static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 240static LHASH *int_thread_get(int create); 241static ERR_STATE *int_thread_get_item(const ERR_STATE *); 242static ERR_STATE *int_thread_set_item(ERR_STATE *); 243static void int_thread_del_item(const ERR_STATE *); 244static int int_err_get_next_lib(void); 245/* The static ERR_FNS table using these defaults functions */ 246static const ERR_FNS err_defaults = 247 { 248 int_err_get, 249 int_err_del, 250 int_err_get_item, 251 int_err_set_item, 252 int_err_del_item, 253 int_thread_get, 254 int_thread_get_item, 255 int_thread_set_item, 256 int_thread_del_item, 257 int_err_get_next_lib 258 }; 259 260/* The replacable table of ERR_FNS functions we use at run-time */ 261static const ERR_FNS *err_fns = NULL; 262 263/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 264#define ERRFN(a) err_fns->cb_##a 265 266/* The internal state used by "err_defaults" - as such, the setting, reading, 267 * creating, and deleting of this data should only be permitted via the 268 * "err_defaults" functions. This way, a linked module can completely defer all 269 * ERR state operation (together with requisite locking) to the implementations 270 * and state in the loading application. */ 271static LHASH *int_error_hash = NULL; 272static LHASH *int_thread_hash = NULL; 273static int int_err_library_number= ERR_LIB_USER; 274 275/* Internal function that checks whether "err_fns" is set and if not, sets it to 276 * the defaults. */ 277static void err_fns_check(void) 278 { 279 if (err_fns) return; 280 281 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 282 if (!err_fns) 283 err_fns = &err_defaults; 284 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 285 } 286 287/* API functions to get or set the underlying ERR functions. */ 288 289const ERR_FNS *ERR_get_implementation(void) 290 { 291 err_fns_check(); 292 return err_fns; 293 } 294 295int ERR_set_implementation(const ERR_FNS *fns) 296 { 297 int ret = 0; 298 299 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 300 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 301 * an error is there?! */ 302 if (!err_fns) 303 { 304 err_fns = fns; 305 ret = 1; 306 } 307 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 308 return ret; 309 } 310 311/* These are the callbacks provided to "lh_new()" when creating the LHASH tables 312 * internal to the "err_defaults" implementation. */ 313 314/* static unsigned long err_hash(ERR_STRING_DATA *a); */ 315static unsigned long err_hash(const void *a_void); 316/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */ 317static int err_cmp(const void *a_void, const void *b_void); 318/* static unsigned long pid_hash(ERR_STATE *pid); */ 319static unsigned long pid_hash(const void *pid_void); 320/* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */ 321static int pid_cmp(const void *a_void,const void *pid_void); 322static unsigned long get_error_values(int inc,int top,const char **file,int *line, 323 const char **data,int *flags); 324 325/* The internal functions used in the "err_defaults" implementation */ 326 327static LHASH *int_err_get(int create) 328 { 329 LHASH *ret = NULL; 330 331 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 332 if (!int_error_hash && create) 333 { 334 CRYPTO_push_info("int_err_get (err.c)"); 335 int_error_hash = lh_new(err_hash, err_cmp); 336 CRYPTO_pop_info(); 337 } 338 if (int_error_hash) 339 ret = int_error_hash; 340 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 341 342 return ret; 343 } 344 345static void int_err_del(void) 346 { 347 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 348 if (int_error_hash) 349 { 350 lh_free(int_error_hash); 351 int_error_hash = NULL; 352 } 353 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 354 } 355 356static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) 357 { 358 ERR_STRING_DATA *p; 359 LHASH *hash; 360 361 err_fns_check(); 362 hash = ERRFN(err_get)(0); 363 if (!hash) 364 return NULL; 365 366 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 367 p = (ERR_STRING_DATA *)lh_retrieve(hash, d); 368 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 369 370 return p; 371 } 372 373static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) 374 { 375 ERR_STRING_DATA *p; 376 LHASH *hash; 377 378 err_fns_check(); 379 hash = ERRFN(err_get)(1); 380 if (!hash) 381 return NULL; 382 383 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 384 p = (ERR_STRING_DATA *)lh_insert(hash, d); 385 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 386 387 return p; 388 } 389 390static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) 391 { 392 ERR_STRING_DATA *p; 393 LHASH *hash; 394 395 err_fns_check(); 396 hash = ERRFN(err_get)(0); 397 if (!hash) 398 return NULL; 399 400 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 401 p = (ERR_STRING_DATA *)lh_delete(hash, d); 402 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 403 404 return p; 405 } 406 407static LHASH *int_thread_get(int create) 408 { 409 LHASH *ret = NULL; 410 411 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 412 if (!int_thread_hash && create) 413 { 414 CRYPTO_push_info("int_thread_get (err.c)"); 415 int_thread_hash = lh_new(pid_hash, pid_cmp); 416 CRYPTO_pop_info(); 417 } 418 if (int_thread_hash) 419 ret = int_thread_hash; 420 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 421 return ret; 422 } 423 424static ERR_STATE *int_thread_get_item(const ERR_STATE *d) 425 { 426 ERR_STATE *p; 427 LHASH *hash; 428 429 err_fns_check(); 430 hash = ERRFN(thread_get)(0); 431 if (!hash) 432 return NULL; 433 434 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 435 p = (ERR_STATE *)lh_retrieve(hash, d); 436 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 437 438 return p; 439 } 440 441static ERR_STATE *int_thread_set_item(ERR_STATE *d) 442 { 443 ERR_STATE *p; 444 LHASH *hash; 445 446 err_fns_check(); 447 hash = ERRFN(thread_get)(1); 448 if (!hash) 449 return NULL; 450 451 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 452 p = (ERR_STATE *)lh_insert(hash, d); 453 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 454 455 return p; 456 } 457 458static void int_thread_del_item(const ERR_STATE *d) 459 { 460 ERR_STATE *p; 461 LHASH *hash; 462 463 err_fns_check(); 464 hash = ERRFN(thread_get)(0); 465 if (!hash) 466 return; 467 468 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 469 p = (ERR_STATE *)lh_delete(hash, d); 470 /* make sure we don't leak memory */ 471 if (int_thread_hash && (lh_num_items(int_thread_hash) == 0)) 472 { 473 lh_free(int_thread_hash); 474 int_thread_hash = NULL; 475 } 476 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 477 478 if (p) 479 ERR_STATE_free(p); 480 } 481 482static int int_err_get_next_lib(void) 483 { 484 int ret; 485 486 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 487 ret = int_err_library_number++; 488 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 489 490 return ret; 491 } 492 493 494#define NUM_SYS_STR_REASONS 127 495#define LEN_SYS_STR_REASON 32 496 497static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 498/* SYS_str_reasons is filled with copies of strerror() results at 499 * initialization. 500 * 'errno' values up to 127 should cover all usual errors, 501 * others will be displayed numerically by ERR_error_string. 502 * It is crucial that we have something for each reason code 503 * that occurs in ERR_str_reasons, or bogus reason strings 504 * will be returned for SYSerr(), which always gets an errno 505 * value and never one of those 'standard' reason codes. */ 506 507static void build_SYS_str_reasons() 508 { 509 /* OPENSSL_malloc cannot be used here, use static storage instead */ 510 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 511 int i; 512 static int init = 1; 513 514 if (!init) return; 515 516 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 517 518 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) 519 { 520 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 521 522 str->error = (unsigned long)i; 523 if (str->string == NULL) 524 { 525 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 526 char *src = strerror(i); 527 if (src != NULL) 528 { 529 strncpy(*dest, src, sizeof *dest); 530 (*dest)[sizeof *dest - 1] = '\0'; 531 str->string = *dest; 532 } 533 } 534 if (str->string == NULL) 535 str->string = "unknown"; 536 } 537 538 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 539 * as required by ERR_load_strings. */ 540 541 init = 0; 542 543 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 544 } 545#endif 546 547#define err_clear_data(p,i) \ 548 if (((p)->err_data[i] != NULL) && \ 549 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 550 { \ 551 OPENSSL_free((p)->err_data[i]); \ 552 (p)->err_data[i]=NULL; \ 553 } \ 554 (p)->err_data_flags[i]=0; 555 556static void ERR_STATE_free(ERR_STATE *s) 557 { 558 int i; 559 560 if (s == NULL) 561 return; 562 563 for (i=0; i<ERR_NUM_ERRORS; i++) 564 { 565 err_clear_data(s,i); 566 } 567 OPENSSL_free(s); 568 } 569 570void ERR_load_ERR_strings(void) 571 { 572 err_fns_check(); 573#ifndef OPENSSL_NO_ERR 574 err_load_strings(0,ERR_str_libraries); 575 err_load_strings(0,ERR_str_reasons); 576 err_load_strings(ERR_LIB_SYS,ERR_str_functs); 577 build_SYS_str_reasons(); 578 err_load_strings(ERR_LIB_SYS,SYS_str_reasons); 579#endif 580 } 581 582static void err_load_strings(int lib, ERR_STRING_DATA *str) 583 { 584 while (str->error) 585 { 586 str->error|=ERR_PACK(lib,0,0); 587 ERRFN(err_set_item)(str); 588 str++; 589 } 590 } 591 592void ERR_load_strings(int lib, ERR_STRING_DATA *str) 593 { 594 ERR_load_ERR_strings(); 595 err_load_strings(lib, str); 596 } 597 598void ERR_unload_strings(int lib, ERR_STRING_DATA *str) 599 { 600 while (str->error) 601 { 602 str->error|=ERR_PACK(lib,0,0); 603 ERRFN(err_del_item)(str); 604 str++; 605 } 606 } 607 608void ERR_free_strings(void) 609 { 610 err_fns_check(); 611 ERRFN(err_del)(); 612 } 613 614/********************************************************/ 615 616void ERR_put_error(int lib, int func, int reason, const char *file, 617 int line) 618 { 619 ERR_STATE *es; 620 621#ifdef _OSD_POSIX 622 /* In the BS2000-OSD POSIX subsystem, the compiler generates 623 * path names in the form "*POSIX(/etc/passwd)". 624 * This dirty hack strips them to something sensible. 625 * @@@ We shouldn't modify a const string, though. 626 */ 627 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) { 628 char *end; 629 630 /* Skip the "*POSIX(" prefix */ 631 file += sizeof("*POSIX(")-1; 632 end = &file[strlen(file)-1]; 633 if (*end == ')') 634 *end = '\0'; 635 /* Optional: use the basename of the path only. */ 636 if ((end = strrchr(file, '/')) != NULL) 637 file = &end[1]; 638 } 639#endif 640 es=ERR_get_state(); 641 642 es->top=(es->top+1)%ERR_NUM_ERRORS; 643 if (es->top == es->bottom) 644 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; 645 es->err_buffer[es->top]=ERR_PACK(lib,func,reason); 646 es->err_file[es->top]=file; 647 es->err_line[es->top]=line; 648 err_clear_data(es,es->top); 649 } 650 651void ERR_clear_error(void) 652 { 653 int i; 654 ERR_STATE *es; 655 656 es=ERR_get_state(); 657 658 for (i=0; i<ERR_NUM_ERRORS; i++) 659 { 660 es->err_buffer[i]=0; 661 err_clear_data(es,i); 662 es->err_file[i]=NULL; 663 es->err_line[i]= -1; 664 } 665 es->top=es->bottom=0; 666 } 667 668 669unsigned long ERR_get_error(void) 670 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); } 671 672unsigned long ERR_get_error_line(const char **file, 673 int *line) 674 { return(get_error_values(1,0,file,line,NULL,NULL)); } 675 676unsigned long ERR_get_error_line_data(const char **file, int *line, 677 const char **data, int *flags) 678 { return(get_error_values(1,0,file,line,data,flags)); } 679 680 681unsigned long ERR_peek_error(void) 682 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); } 683 684unsigned long ERR_peek_error_line(const char **file, int *line) 685 { return(get_error_values(0,0,file,line,NULL,NULL)); } 686 687unsigned long ERR_peek_error_line_data(const char **file, int *line, 688 const char **data, int *flags) 689 { return(get_error_values(0,0,file,line,data,flags)); } 690 691 692unsigned long ERR_peek_last_error(void) 693 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); } 694 695unsigned long ERR_peek_last_error_line(const char **file, int *line) 696 { return(get_error_values(0,1,file,line,NULL,NULL)); } 697 698unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 699 const char **data, int *flags) 700 { return(get_error_values(0,1,file,line,data,flags)); } 701 702 703static unsigned long get_error_values(int inc, int top, const char **file, int *line, 704 const char **data, int *flags) 705 { 706 int i=0; 707 ERR_STATE *es; 708 unsigned long ret; 709 710 es=ERR_get_state(); 711 712 if (inc && top) 713 { 714 if (file) *file = ""; 715 if (line) *line = 0; 716 if (data) *data = ""; 717 if (flags) *flags = 0; 718 719 return ERR_R_INTERNAL_ERROR; 720 } 721 722 if (es->bottom == es->top) return 0; 723 if (top) 724 i=es->top; /* last error */ 725 else 726 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */ 727 728 ret=es->err_buffer[i]; 729 if (inc) 730 { 731 es->bottom=i; 732 es->err_buffer[i]=0; 733 } 734 735 if ((file != NULL) && (line != NULL)) 736 { 737 if (es->err_file[i] == NULL) 738 { 739 *file="NA"; 740 if (line != NULL) *line=0; 741 } 742 else 743 { 744 *file=es->err_file[i]; 745 if (line != NULL) *line=es->err_line[i]; 746 } 747 } 748 749 if (data == NULL) 750 { 751 if (inc) 752 { 753 err_clear_data(es, i); 754 } 755 } 756 else 757 { 758 if (es->err_data[i] == NULL) 759 { 760 *data=""; 761 if (flags != NULL) *flags=0; 762 } 763 else 764 { 765 *data=es->err_data[i]; 766 if (flags != NULL) *flags=es->err_data_flags[i]; 767 } 768 } 769 return ret; 770 } 771 772void ERR_error_string_n(unsigned long e, char *buf, size_t len) 773 { 774 char lsbuf[64], fsbuf[64], rsbuf[64]; 775 const char *ls,*fs,*rs; 776 unsigned long l,f,r; 777 778 l=ERR_GET_LIB(e); 779 f=ERR_GET_FUNC(e); 780 r=ERR_GET_REASON(e); 781 782 ls=ERR_lib_error_string(e); 783 fs=ERR_func_error_string(e); 784 rs=ERR_reason_error_string(e); 785 786 if (ls == NULL) 787 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); 788 if (fs == NULL) 789 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); 790 if (rs == NULL) 791 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); 792 793 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf, 794 fs?fs:fsbuf, rs?rs:rsbuf); 795 if (strlen(buf) == len-1) 796 { 797 /* output may be truncated; make sure we always have 5 798 * colon-separated fields, i.e. 4 colons ... */ 799#define NUM_COLONS 4 800 if (len > NUM_COLONS) /* ... if possible */ 801 { 802 int i; 803 char *s = buf; 804 805 for (i = 0; i < NUM_COLONS; i++) 806 { 807 char *colon = strchr(s, ':'); 808 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i) 809 { 810 /* set colon no. i at last possible position 811 * (buf[len-1] is the terminating 0)*/ 812 colon = &buf[len-1] - NUM_COLONS + i; 813 *colon = ':'; 814 } 815 s = colon + 1; 816 } 817 } 818 } 819 } 820 821/* BAD for multi-threading: uses a local buffer if ret == NULL */ 822/* ERR_error_string_n should be used instead for ret != NULL 823 * as ERR_error_string cannot know how large the buffer is */ 824char *ERR_error_string(unsigned long e, char *ret) 825 { 826 static char buf[256]; 827 828 if (ret == NULL) ret=buf; 829 ERR_error_string_n(e, ret, 256); 830 831 return ret; 832 } 833 834LHASH *ERR_get_string_table(void) 835 { 836 err_fns_check(); 837 return ERRFN(err_get)(0); 838 } 839 840LHASH *ERR_get_err_state_table(void) 841 { 842 err_fns_check(); 843 return ERRFN(thread_get)(0); 844 } 845 846const char *ERR_lib_error_string(unsigned long e) 847 { 848 ERR_STRING_DATA d,*p; 849 unsigned long l; 850 851 err_fns_check(); 852 l=ERR_GET_LIB(e); 853 d.error=ERR_PACK(l,0,0); 854 p=ERRFN(err_get_item)(&d); 855 return((p == NULL)?NULL:p->string); 856 } 857 858const char *ERR_func_error_string(unsigned long e) 859 { 860 ERR_STRING_DATA d,*p; 861 unsigned long l,f; 862 863 err_fns_check(); 864 l=ERR_GET_LIB(e); 865 f=ERR_GET_FUNC(e); 866 d.error=ERR_PACK(l,f,0); 867 p=ERRFN(err_get_item)(&d); 868 return((p == NULL)?NULL:p->string); 869 } 870 871const char *ERR_reason_error_string(unsigned long e) 872 { 873 ERR_STRING_DATA d,*p=NULL; 874 unsigned long l,r; 875 876 err_fns_check(); 877 l=ERR_GET_LIB(e); 878 r=ERR_GET_REASON(e); 879 d.error=ERR_PACK(l,0,r); 880 p=ERRFN(err_get_item)(&d); 881 if (!p) 882 { 883 d.error=ERR_PACK(0,0,r); 884 p=ERRFN(err_get_item)(&d); 885 } 886 return((p == NULL)?NULL:p->string); 887 } 888 889/* static unsigned long err_hash(ERR_STRING_DATA *a) */ 890static unsigned long err_hash(const void *a_void) 891 { 892 unsigned long ret,l; 893 894 l=((ERR_STRING_DATA *)a_void)->error; 895 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 896 return(ret^ret%19*13); 897 } 898 899/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */ 900static int err_cmp(const void *a_void, const void *b_void) 901 { 902 return((int)(((ERR_STRING_DATA *)a_void)->error - 903 ((ERR_STRING_DATA *)b_void)->error)); 904 } 905 906/* static unsigned long pid_hash(ERR_STATE *a) */ 907static unsigned long pid_hash(const void *a_void) 908 { 909 return(((ERR_STATE *)a_void)->pid*13); 910 } 911 912/* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */ 913static int pid_cmp(const void *a_void, const void *b_void) 914 { 915 return((int)((long)((ERR_STATE *)a_void)->pid - 916 (long)((ERR_STATE *)b_void)->pid)); 917 } 918 919void ERR_remove_state(unsigned long pid) 920 { 921 ERR_STATE tmp; 922 923 err_fns_check(); 924 if (pid == 0) 925 pid=(unsigned long)CRYPTO_thread_id(); 926 tmp.pid=pid; 927 /* thread_del_item automatically destroys the LHASH if the number of 928 * items reaches zero. */ 929 ERRFN(thread_del_item)(&tmp); 930 } 931 932ERR_STATE *ERR_get_state(void) 933 { 934 static ERR_STATE fallback; 935 ERR_STATE *ret,tmp,*tmpp=NULL; 936 int i; 937 unsigned long pid; 938 939 err_fns_check(); 940 pid=(unsigned long)CRYPTO_thread_id(); 941 tmp.pid=pid; 942 ret=ERRFN(thread_get_item)(&tmp); 943 944 /* ret == the error state, if NULL, make a new one */ 945 if (ret == NULL) 946 { 947 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); 948 if (ret == NULL) return(&fallback); 949 ret->pid=pid; 950 ret->top=0; 951 ret->bottom=0; 952 for (i=0; i<ERR_NUM_ERRORS; i++) 953 { 954 ret->err_data[i]=NULL; 955 ret->err_data_flags[i]=0; 956 } 957 tmpp = ERRFN(thread_set_item)(ret); 958 /* To check if insertion failed, do a get. */ 959 if (ERRFN(thread_get_item)(ret) != ret) 960 { 961 ERR_STATE_free(ret); /* could not insert it */ 962 return(&fallback); 963 } 964 /* If a race occured in this function and we came second, tmpp 965 * is the first one that we just replaced. */ 966 if (tmpp) 967 ERR_STATE_free(tmpp); 968 } 969 return ret; 970 } 971 972int ERR_get_next_error_library(void) 973 { 974 err_fns_check(); 975 return ERRFN(get_next_lib)(); 976 } 977 978void ERR_set_error_data(char *data, int flags) 979 { 980 ERR_STATE *es; 981 int i; 982 983 es=ERR_get_state(); 984 985 i=es->top; 986 if (i == 0) 987 i=ERR_NUM_ERRORS-1; 988 989 err_clear_data(es,i); 990 es->err_data[i]=data; 991 es->err_data_flags[i]=flags; 992 } 993 994void ERR_add_error_data(int num, ...) 995 { 996 va_list args; 997 int i,n,s; 998 char *str,*p,*a; 999 1000 s=80; 1001 str=OPENSSL_malloc(s+1); 1002 if (str == NULL) return; 1003 str[0]='\0'; 1004 1005 va_start(args, num); 1006 n=0; 1007 for (i=0; i<num; i++) 1008 { 1009 a=va_arg(args, char*); 1010 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 1011 if (a != NULL) 1012 { 1013 n+=strlen(a); 1014 if (n > s) 1015 { 1016 s=n+20; 1017 p=OPENSSL_realloc(str,s+1); 1018 if (p == NULL) 1019 { 1020 OPENSSL_free(str); 1021 goto err; 1022 } 1023 else 1024 str=p; 1025 } 1026 strcat(str,a); 1027 } 1028 } 1029 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); 1030 1031err: 1032 va_end(args); 1033 } 1034