err.c revision 1.7
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 {0,NULL}, 170 }; 171 172static ERR_STRING_DATA ERR_str_reasons[]= 173 { 174{ERR_R_SYS_LIB ,"system lib"}, 175{ERR_R_BN_LIB ,"BN lib"}, 176{ERR_R_RSA_LIB ,"RSA lib"}, 177{ERR_R_DH_LIB ,"DH lib"}, 178{ERR_R_EVP_LIB ,"EVP lib"}, 179{ERR_R_BUF_LIB ,"BUF lib"}, 180{ERR_R_OBJ_LIB ,"OBJ lib"}, 181{ERR_R_PEM_LIB ,"PEM lib"}, 182{ERR_R_DSA_LIB ,"DSA lib"}, 183{ERR_R_X509_LIB ,"X509 lib"}, 184{ERR_R_ASN1_LIB ,"ASN1 lib"}, 185{ERR_R_CONF_LIB ,"CONF lib"}, 186{ERR_R_CRYPTO_LIB ,"CRYPTO lib"}, 187{ERR_R_EC_LIB ,"EC lib"}, 188{ERR_R_SSL_LIB ,"SSL lib"}, 189{ERR_R_BIO_LIB ,"BIO lib"}, 190{ERR_R_PKCS7_LIB ,"PKCS7 lib"}, 191{ERR_R_X509V3_LIB ,"X509V3 lib"}, 192{ERR_R_PKCS12_LIB ,"PKCS12 lib"}, 193{ERR_R_RAND_LIB ,"RAND lib"}, 194{ERR_R_DSO_LIB ,"DSO lib"}, 195{ERR_R_ENGINE_LIB ,"ENGINE lib"}, 196{ERR_R_OCSP_LIB ,"OCSP lib"}, 197 198{ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"}, 199{ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"}, 200{ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"}, 201{ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"}, 202{ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"}, 203{ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"}, 204 205{ERR_R_FATAL ,"fatal"}, 206{ERR_R_MALLOC_FAILURE ,"malloc failure"}, 207{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"}, 208{ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"}, 209{ERR_R_INTERNAL_ERROR ,"internal error"}, 210 211{0,NULL}, 212 }; 213 214 215/* Define the predeclared (but externally opaque) "ERR_FNS" type */ 216struct st_ERR_FNS 217 { 218 /* Works on the "error_hash" string table */ 219 LHASH *(*cb_err_get)(int create); 220 void (*cb_err_del)(void); 221 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 222 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 223 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 224 /* Works on the "thread_hash" error-state table */ 225 LHASH *(*cb_thread_get)(int create); 226 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 227 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 228 void (*cb_thread_del_item)(const ERR_STATE *); 229 /* Returns the next available error "library" numbers */ 230 int (*cb_get_next_lib)(void); 231 }; 232 233/* Predeclarations of the "err_defaults" functions */ 234static LHASH *int_err_get(int create); 235static void int_err_del(void); 236static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 237static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 238static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 239static LHASH *int_thread_get(int create); 240static ERR_STATE *int_thread_get_item(const ERR_STATE *); 241static ERR_STATE *int_thread_set_item(ERR_STATE *); 242static void int_thread_del_item(const ERR_STATE *); 243static int int_err_get_next_lib(void); 244/* The static ERR_FNS table using these defaults functions */ 245static const ERR_FNS err_defaults = 246 { 247 int_err_get, 248 int_err_del, 249 int_err_get_item, 250 int_err_set_item, 251 int_err_del_item, 252 int_thread_get, 253 int_thread_get_item, 254 int_thread_set_item, 255 int_thread_del_item, 256 int_err_get_next_lib 257 }; 258 259/* The replacable table of ERR_FNS functions we use at run-time */ 260static const ERR_FNS *err_fns = NULL; 261 262/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 263#define ERRFN(a) err_fns->cb_##a 264 265/* The internal state used by "err_defaults" - as such, the setting, reading, 266 * creating, and deleting of this data should only be permitted via the 267 * "err_defaults" functions. This way, a linked module can completely defer all 268 * ERR state operation (together with requisite locking) to the implementations 269 * and state in the loading application. */ 270static LHASH *int_error_hash = NULL; 271static LHASH *int_thread_hash = NULL; 272static int int_err_library_number= ERR_LIB_USER; 273 274/* Internal function that checks whether "err_fns" is set and if not, sets it to 275 * the defaults. */ 276static void err_fns_check(void) 277 { 278 if (err_fns) return; 279 280 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 281 if (!err_fns) 282 err_fns = &err_defaults; 283 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 284 } 285 286/* API functions to get or set the underlying ERR functions. */ 287 288const ERR_FNS *ERR_get_implementation(void) 289 { 290 err_fns_check(); 291 return err_fns; 292 } 293 294int ERR_set_implementation(const ERR_FNS *fns) 295 { 296 int ret = 0; 297 298 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 299 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 300 * an error is there?! */ 301 if (!err_fns) 302 { 303 err_fns = fns; 304 ret = 1; 305 } 306 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 307 return ret; 308 } 309 310/* These are the callbacks provided to "lh_new()" when creating the LHASH tables 311 * internal to the "err_defaults" implementation. */ 312 313/* static unsigned long err_hash(ERR_STRING_DATA *a); */ 314static unsigned long err_hash(const void *a_void); 315/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */ 316static int err_cmp(const void *a_void, const void *b_void); 317/* static unsigned long pid_hash(ERR_STATE *pid); */ 318static unsigned long pid_hash(const void *pid_void); 319/* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */ 320static int pid_cmp(const void *a_void,const void *pid_void); 321static unsigned long get_error_values(int inc,int top,const char **file,int *line, 322 const char **data,int *flags); 323 324/* The internal functions used in the "err_defaults" implementation */ 325 326static LHASH *int_err_get(int create) 327 { 328 LHASH *ret = NULL; 329 330 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 331 if (!int_error_hash && create) 332 { 333 CRYPTO_push_info("int_err_get (err.c)"); 334 int_error_hash = lh_new(err_hash, err_cmp); 335 CRYPTO_pop_info(); 336 } 337 if (int_error_hash) 338 ret = int_error_hash; 339 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 340 341 return ret; 342 } 343 344static void int_err_del(void) 345 { 346 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 347 if (int_error_hash) 348 { 349 lh_free(int_error_hash); 350 int_error_hash = NULL; 351 } 352 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 353 } 354 355static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) 356 { 357 ERR_STRING_DATA *p; 358 LHASH *hash; 359 360 err_fns_check(); 361 hash = ERRFN(err_get)(0); 362 if (!hash) 363 return NULL; 364 365 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 366 p = (ERR_STRING_DATA *)lh_retrieve(hash, d); 367 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 368 369 return p; 370 } 371 372static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) 373 { 374 ERR_STRING_DATA *p; 375 LHASH *hash; 376 377 err_fns_check(); 378 hash = ERRFN(err_get)(1); 379 if (!hash) 380 return NULL; 381 382 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 383 p = (ERR_STRING_DATA *)lh_insert(hash, d); 384 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 385 386 return p; 387 } 388 389static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) 390 { 391 ERR_STRING_DATA *p; 392 LHASH *hash; 393 394 err_fns_check(); 395 hash = ERRFN(err_get)(0); 396 if (!hash) 397 return NULL; 398 399 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 400 p = (ERR_STRING_DATA *)lh_delete(hash, d); 401 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 402 403 return p; 404 } 405 406static LHASH *int_thread_get(int create) 407 { 408 LHASH *ret = NULL; 409 410 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 411 if (!int_thread_hash && create) 412 { 413 CRYPTO_push_info("int_thread_get (err.c)"); 414 int_thread_hash = lh_new(pid_hash, pid_cmp); 415 CRYPTO_pop_info(); 416 } 417 if (int_thread_hash) 418 ret = int_thread_hash; 419 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 420 return ret; 421 } 422 423static ERR_STATE *int_thread_get_item(const ERR_STATE *d) 424 { 425 ERR_STATE *p; 426 LHASH *hash; 427 428 err_fns_check(); 429 hash = ERRFN(thread_get)(0); 430 if (!hash) 431 return NULL; 432 433 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 434 p = (ERR_STATE *)lh_retrieve(hash, d); 435 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 436 437 return p; 438 } 439 440static ERR_STATE *int_thread_set_item(ERR_STATE *d) 441 { 442 ERR_STATE *p; 443 LHASH *hash; 444 445 err_fns_check(); 446 hash = ERRFN(thread_get)(1); 447 if (!hash) 448 return NULL; 449 450 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 451 p = (ERR_STATE *)lh_insert(hash, d); 452 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 453 454 return p; 455 } 456 457static void int_thread_del_item(const ERR_STATE *d) 458 { 459 ERR_STATE *p; 460 LHASH *hash; 461 462 err_fns_check(); 463 hash = ERRFN(thread_get)(0); 464 if (!hash) 465 return; 466 467 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 468 p = (ERR_STATE *)lh_delete(hash, d); 469 /* make sure we don't leak memory */ 470 if (int_thread_hash && (lh_num_items(int_thread_hash) == 0)) 471 { 472 lh_free(int_thread_hash); 473 int_thread_hash = NULL; 474 } 475 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 476 477 if (p) 478 ERR_STATE_free(p); 479 } 480 481static int int_err_get_next_lib(void) 482 { 483 int ret; 484 485 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 486 ret = int_err_library_number++; 487 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 488 489 return ret; 490 } 491 492 493#define NUM_SYS_STR_REASONS 127 494#define LEN_SYS_STR_REASON 32 495 496static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 497/* SYS_str_reasons is filled with copies of strerror() results at 498 * initialization. 499 * 'errno' values up to 127 should cover all usual errors, 500 * others will be displayed numerically by ERR_error_string. 501 * It is crucial that we have something for each reason code 502 * that occurs in ERR_str_reasons, or bogus reason strings 503 * will be returned for SYSerr(), which always gets an errno 504 * value and never one of those 'standard' reason codes. */ 505 506static void build_SYS_str_reasons() 507 { 508 /* OPENSSL_malloc cannot be used here, use static storage instead */ 509 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 510 int i; 511 static int init = 1; 512 513 if (!init) return; 514 515 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 516 517 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) 518 { 519 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 520 521 str->error = (unsigned long)i; 522 if (str->string == NULL) 523 { 524 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 525 char *src = strerror(i); 526 if (src != NULL) 527 { 528 strncpy(*dest, src, sizeof *dest); 529 (*dest)[sizeof *dest - 1] = '\0'; 530 str->string = *dest; 531 } 532 } 533 if (str->string == NULL) 534 str->string = "unknown"; 535 } 536 537 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 538 * as required by ERR_load_strings. */ 539 540 init = 0; 541 542 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 543 } 544#endif 545 546#define err_clear_data(p,i) \ 547 if (((p)->err_data[i] != NULL) && \ 548 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 549 { \ 550 OPENSSL_free((p)->err_data[i]); \ 551 (p)->err_data[i]=NULL; \ 552 } \ 553 (p)->err_data_flags[i]=0; 554 555static void ERR_STATE_free(ERR_STATE *s) 556 { 557 int i; 558 559 if (s == NULL) 560 return; 561 562 for (i=0; i<ERR_NUM_ERRORS; i++) 563 { 564 err_clear_data(s,i); 565 } 566 OPENSSL_free(s); 567 } 568 569void ERR_load_ERR_strings(void) 570 { 571 err_fns_check(); 572#ifndef OPENSSL_NO_ERR 573 err_load_strings(0,ERR_str_libraries); 574 err_load_strings(0,ERR_str_reasons); 575 err_load_strings(ERR_LIB_SYS,ERR_str_functs); 576 build_SYS_str_reasons(); 577 err_load_strings(ERR_LIB_SYS,SYS_str_reasons); 578#endif 579 } 580 581static void err_load_strings(int lib, ERR_STRING_DATA *str) 582 { 583 while (str->error) 584 { 585 str->error|=ERR_PACK(lib,0,0); 586 ERRFN(err_set_item)(str); 587 str++; 588 } 589 } 590 591void ERR_load_strings(int lib, ERR_STRING_DATA *str) 592 { 593 ERR_load_ERR_strings(); 594 err_load_strings(lib, str); 595 } 596 597void ERR_unload_strings(int lib, ERR_STRING_DATA *str) 598 { 599 while (str->error) 600 { 601 str->error|=ERR_PACK(lib,0,0); 602 ERRFN(err_del_item)(str); 603 str++; 604 } 605 } 606 607void ERR_free_strings(void) 608 { 609 err_fns_check(); 610 ERRFN(err_del)(); 611 } 612 613/********************************************************/ 614 615void ERR_put_error(int lib, int func, int reason, const char *file, 616 int line) 617 { 618 ERR_STATE *es; 619 620#ifdef _OSD_POSIX 621 /* In the BS2000-OSD POSIX subsystem, the compiler generates 622 * path names in the form "*POSIX(/etc/passwd)". 623 * This dirty hack strips them to something sensible. 624 * @@@ We shouldn't modify a const string, though. 625 */ 626 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) { 627 char *end; 628 629 /* Skip the "*POSIX(" prefix */ 630 file += sizeof("*POSIX(")-1; 631 end = &file[strlen(file)-1]; 632 if (*end == ')') 633 *end = '\0'; 634 /* Optional: use the basename of the path only. */ 635 if ((end = strrchr(file, '/')) != NULL) 636 file = &end[1]; 637 } 638#endif 639 es=ERR_get_state(); 640 641 es->top=(es->top+1)%ERR_NUM_ERRORS; 642 if (es->top == es->bottom) 643 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; 644 es->err_buffer[es->top]=ERR_PACK(lib,func,reason); 645 es->err_file[es->top]=file; 646 es->err_line[es->top]=line; 647 err_clear_data(es,es->top); 648 } 649 650void ERR_clear_error(void) 651 { 652 int i; 653 ERR_STATE *es; 654 655 es=ERR_get_state(); 656 657 for (i=0; i<ERR_NUM_ERRORS; i++) 658 { 659 es->err_buffer[i]=0; 660 err_clear_data(es,i); 661 es->err_file[i]=NULL; 662 es->err_line[i]= -1; 663 } 664 es->top=es->bottom=0; 665 } 666 667 668unsigned long ERR_get_error(void) 669 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); } 670 671unsigned long ERR_get_error_line(const char **file, 672 int *line) 673 { return(get_error_values(1,0,file,line,NULL,NULL)); } 674 675unsigned long ERR_get_error_line_data(const char **file, int *line, 676 const char **data, int *flags) 677 { return(get_error_values(1,0,file,line,data,flags)); } 678 679 680unsigned long ERR_peek_error(void) 681 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); } 682 683unsigned long ERR_peek_error_line(const char **file, int *line) 684 { return(get_error_values(0,0,file,line,NULL,NULL)); } 685 686unsigned long ERR_peek_error_line_data(const char **file, int *line, 687 const char **data, int *flags) 688 { return(get_error_values(0,0,file,line,data,flags)); } 689 690 691unsigned long ERR_peek_last_error(void) 692 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); } 693 694unsigned long ERR_peek_last_error_line(const char **file, int *line) 695 { return(get_error_values(0,1,file,line,NULL,NULL)); } 696 697unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 698 const char **data, int *flags) 699 { return(get_error_values(0,1,file,line,data,flags)); } 700 701 702static unsigned long get_error_values(int inc, int top, const char **file, int *line, 703 const char **data, int *flags) 704 { 705 int i=0; 706 ERR_STATE *es; 707 unsigned long ret; 708 709 es=ERR_get_state(); 710 711 if (inc && top) 712 { 713 if (file) *file = ""; 714 if (line) *line = 0; 715 if (data) *data = ""; 716 if (flags) *flags = 0; 717 718 return ERR_R_INTERNAL_ERROR; 719 } 720 721 if (es->bottom == es->top) return 0; 722 if (top) 723 i=es->top; /* last error */ 724 else 725 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */ 726 727 ret=es->err_buffer[i]; 728 if (inc) 729 { 730 es->bottom=i; 731 es->err_buffer[i]=0; 732 } 733 734 if ((file != NULL) && (line != NULL)) 735 { 736 if (es->err_file[i] == NULL) 737 { 738 *file="NA"; 739 if (line != NULL) *line=0; 740 } 741 else 742 { 743 *file=es->err_file[i]; 744 if (line != NULL) *line=es->err_line[i]; 745 } 746 } 747 748 if (data == NULL) 749 { 750 if (inc) 751 { 752 err_clear_data(es, i); 753 } 754 } 755 else 756 { 757 if (es->err_data[i] == NULL) 758 { 759 *data=""; 760 if (flags != NULL) *flags=0; 761 } 762 else 763 { 764 *data=es->err_data[i]; 765 if (flags != NULL) *flags=es->err_data_flags[i]; 766 } 767 } 768 return ret; 769 } 770 771void ERR_error_string_n(unsigned long e, char *buf, size_t len) 772 { 773 char lsbuf[64], fsbuf[64], rsbuf[64]; 774 const char *ls,*fs,*rs; 775 unsigned long l,f,r; 776 777 l=ERR_GET_LIB(e); 778 f=ERR_GET_FUNC(e); 779 r=ERR_GET_REASON(e); 780 781 ls=ERR_lib_error_string(e); 782 fs=ERR_func_error_string(e); 783 rs=ERR_reason_error_string(e); 784 785 if (ls == NULL) 786 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); 787 if (fs == NULL) 788 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); 789 if (rs == NULL) 790 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); 791 792 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf, 793 fs?fs:fsbuf, rs?rs:rsbuf); 794 if (strlen(buf) == len-1) 795 { 796 /* output may be truncated; make sure we always have 5 797 * colon-separated fields, i.e. 4 colons ... */ 798#define NUM_COLONS 4 799 if (len > NUM_COLONS) /* ... if possible */ 800 { 801 int i; 802 char *s = buf; 803 804 for (i = 0; i < NUM_COLONS; i++) 805 { 806 char *colon = strchr(s, ':'); 807 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i) 808 { 809 /* set colon no. i at last possible position 810 * (buf[len-1] is the terminating 0)*/ 811 colon = &buf[len-1] - NUM_COLONS + i; 812 *colon = ':'; 813 } 814 s = colon + 1; 815 } 816 } 817 } 818 } 819 820/* BAD for multi-threading: uses a local buffer if ret == NULL */ 821/* ERR_error_string_n should be used instead for ret != NULL 822 * as ERR_error_string cannot know how large the buffer is */ 823char *ERR_error_string(unsigned long e, char *ret) 824 { 825 static char buf[256]; 826 827 if (ret == NULL) ret=buf; 828 ERR_error_string_n(e, ret, 256); 829 830 return ret; 831 } 832 833LHASH *ERR_get_string_table(void) 834 { 835 err_fns_check(); 836 return ERRFN(err_get)(0); 837 } 838 839LHASH *ERR_get_err_state_table(void) 840 { 841 err_fns_check(); 842 return ERRFN(thread_get)(0); 843 } 844 845const char *ERR_lib_error_string(unsigned long e) 846 { 847 ERR_STRING_DATA d,*p; 848 unsigned long l; 849 850 err_fns_check(); 851 l=ERR_GET_LIB(e); 852 d.error=ERR_PACK(l,0,0); 853 p=ERRFN(err_get_item)(&d); 854 return((p == NULL)?NULL:p->string); 855 } 856 857const char *ERR_func_error_string(unsigned long e) 858 { 859 ERR_STRING_DATA d,*p; 860 unsigned long l,f; 861 862 err_fns_check(); 863 l=ERR_GET_LIB(e); 864 f=ERR_GET_FUNC(e); 865 d.error=ERR_PACK(l,f,0); 866 p=ERRFN(err_get_item)(&d); 867 return((p == NULL)?NULL:p->string); 868 } 869 870const char *ERR_reason_error_string(unsigned long e) 871 { 872 ERR_STRING_DATA d,*p=NULL; 873 unsigned long l,r; 874 875 err_fns_check(); 876 l=ERR_GET_LIB(e); 877 r=ERR_GET_REASON(e); 878 d.error=ERR_PACK(l,0,r); 879 p=ERRFN(err_get_item)(&d); 880 if (!p) 881 { 882 d.error=ERR_PACK(0,0,r); 883 p=ERRFN(err_get_item)(&d); 884 } 885 return((p == NULL)?NULL:p->string); 886 } 887 888/* static unsigned long err_hash(ERR_STRING_DATA *a) */ 889static unsigned long err_hash(const void *a_void) 890 { 891 unsigned long ret,l; 892 893 l=((ERR_STRING_DATA *)a_void)->error; 894 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 895 return(ret^ret%19*13); 896 } 897 898/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */ 899static int err_cmp(const void *a_void, const void *b_void) 900 { 901 return((int)(((ERR_STRING_DATA *)a_void)->error - 902 ((ERR_STRING_DATA *)b_void)->error)); 903 } 904 905/* static unsigned long pid_hash(ERR_STATE *a) */ 906static unsigned long pid_hash(const void *a_void) 907 { 908 return(((ERR_STATE *)a_void)->pid*13); 909 } 910 911/* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */ 912static int pid_cmp(const void *a_void, const void *b_void) 913 { 914 return((int)((long)((ERR_STATE *)a_void)->pid - 915 (long)((ERR_STATE *)b_void)->pid)); 916 } 917 918void ERR_remove_state(unsigned long pid) 919 { 920 ERR_STATE tmp; 921 922 err_fns_check(); 923 if (pid == 0) 924 pid=(unsigned long)CRYPTO_thread_id(); 925 tmp.pid=pid; 926 /* thread_del_item automatically destroys the LHASH if the number of 927 * items reaches zero. */ 928 ERRFN(thread_del_item)(&tmp); 929 } 930 931ERR_STATE *ERR_get_state(void) 932 { 933 static ERR_STATE fallback; 934 ERR_STATE *ret,tmp,*tmpp=NULL; 935 int i; 936 unsigned long pid; 937 938 err_fns_check(); 939 pid=(unsigned long)CRYPTO_thread_id(); 940 tmp.pid=pid; 941 ret=ERRFN(thread_get_item)(&tmp); 942 943 /* ret == the error state, if NULL, make a new one */ 944 if (ret == NULL) 945 { 946 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); 947 if (ret == NULL) return(&fallback); 948 ret->pid=pid; 949 ret->top=0; 950 ret->bottom=0; 951 for (i=0; i<ERR_NUM_ERRORS; i++) 952 { 953 ret->err_data[i]=NULL; 954 ret->err_data_flags[i]=0; 955 } 956 tmpp = ERRFN(thread_set_item)(ret); 957 /* To check if insertion failed, do a get. */ 958 if (ERRFN(thread_get_item)(ret) != ret) 959 { 960 ERR_STATE_free(ret); /* could not insert it */ 961 return(&fallback); 962 } 963 /* If a race occured in this function and we came second, tmpp 964 * is the first one that we just replaced. */ 965 if (tmpp) 966 ERR_STATE_free(tmpp); 967 } 968 return ret; 969 } 970 971int ERR_get_next_error_library(void) 972 { 973 err_fns_check(); 974 return ERRFN(get_next_lib)(); 975 } 976 977void ERR_set_error_data(char *data, int flags) 978 { 979 ERR_STATE *es; 980 int i; 981 982 es=ERR_get_state(); 983 984 i=es->top; 985 if (i == 0) 986 i=ERR_NUM_ERRORS-1; 987 988 err_clear_data(es,i); 989 es->err_data[i]=data; 990 es->err_data_flags[i]=flags; 991 } 992 993void ERR_add_error_data(int num, ...) 994 { 995 va_list args; 996 int i,n,s; 997 char *str,*p,*a; 998 999 s=80; 1000 str=OPENSSL_malloc(s+1); 1001 if (str == NULL) return; 1002 str[0]='\0'; 1003 1004 va_start(args, num); 1005 n=0; 1006 for (i=0; i<num; i++) 1007 { 1008 a=va_arg(args, char*); 1009 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 1010 if (a != NULL) 1011 { 1012 n+=strlen(a); 1013 if (n > s) 1014 { 1015 s=n+20; 1016 p=OPENSSL_realloc(str,s+1); 1017 if (p == NULL) 1018 { 1019 OPENSSL_free(str); 1020 goto err; 1021 } 1022 else 1023 str=p; 1024 } 1025 strcat(str,a); 1026 } 1027 } 1028 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); 1029 1030err: 1031 va_end(args); 1032 } 1033