err.c revision 1.15
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{ERR_PACK(ERR_LIB_CMS,0,0) ,"CMS routines"}, 153{0,NULL}, 154 }; 155 156static ERR_STRING_DATA ERR_str_functs[]= 157 { 158 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"}, 159 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"}, 160 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"}, 161 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"}, 162 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"}, 163 {ERR_PACK(0,SYS_F_BIND,0), "bind"}, 164 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"}, 165 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"}, 166#ifdef OPENSSL_SYS_WINDOWS 167 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"}, 168#endif 169 {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"}, 170 {ERR_PACK(0,SYS_F_FREAD,0), "fread"}, 171 {0,NULL}, 172 }; 173 174static ERR_STRING_DATA ERR_str_reasons[]= 175 { 176{ERR_R_SYS_LIB ,"system lib"}, 177{ERR_R_BN_LIB ,"BN lib"}, 178{ERR_R_RSA_LIB ,"RSA lib"}, 179{ERR_R_DH_LIB ,"DH lib"}, 180{ERR_R_EVP_LIB ,"EVP lib"}, 181{ERR_R_BUF_LIB ,"BUF lib"}, 182{ERR_R_OBJ_LIB ,"OBJ lib"}, 183{ERR_R_PEM_LIB ,"PEM lib"}, 184{ERR_R_DSA_LIB ,"DSA lib"}, 185{ERR_R_X509_LIB ,"X509 lib"}, 186{ERR_R_ASN1_LIB ,"ASN1 lib"}, 187{ERR_R_CONF_LIB ,"CONF lib"}, 188{ERR_R_CRYPTO_LIB ,"CRYPTO lib"}, 189{ERR_R_EC_LIB ,"EC lib"}, 190{ERR_R_SSL_LIB ,"SSL lib"}, 191{ERR_R_BIO_LIB ,"BIO lib"}, 192{ERR_R_PKCS7_LIB ,"PKCS7 lib"}, 193{ERR_R_X509V3_LIB ,"X509V3 lib"}, 194{ERR_R_PKCS12_LIB ,"PKCS12 lib"}, 195{ERR_R_RAND_LIB ,"RAND lib"}, 196{ERR_R_DSO_LIB ,"DSO lib"}, 197{ERR_R_ENGINE_LIB ,"ENGINE lib"}, 198{ERR_R_OCSP_LIB ,"OCSP lib"}, 199 200{ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"}, 201{ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"}, 202{ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"}, 203{ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"}, 204{ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"}, 205{ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"}, 206 207{ERR_R_FATAL ,"fatal"}, 208{ERR_R_MALLOC_FAILURE ,"malloc failure"}, 209{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"}, 210{ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"}, 211{ERR_R_INTERNAL_ERROR ,"internal error"}, 212{ERR_R_DISABLED ,"called a function that was disabled at compile-time"}, 213 214{0,NULL}, 215 }; 216#endif 217 218 219/* Define the predeclared (but externally opaque) "ERR_FNS" type */ 220struct st_ERR_FNS 221 { 222 /* Works on the "error_hash" string table */ 223 LHASH *(*cb_err_get)(int create); 224 void (*cb_err_del)(void); 225 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 226 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 227 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 228 /* Works on the "thread_hash" error-state table */ 229 LHASH *(*cb_thread_get)(int create); 230 void (*cb_thread_release)(LHASH **hash); 231 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 232 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 233 void (*cb_thread_del_item)(const ERR_STATE *); 234 /* Returns the next available error "library" numbers */ 235 int (*cb_get_next_lib)(void); 236 }; 237 238/* Predeclarations of the "err_defaults" functions */ 239static LHASH *int_err_get(int create); 240static void int_err_del(void); 241static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 242static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 243static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 244static LHASH *int_thread_get(int create); 245static void int_thread_release(LHASH **hash); 246static ERR_STATE *int_thread_get_item(const ERR_STATE *); 247static ERR_STATE *int_thread_set_item(ERR_STATE *); 248static void int_thread_del_item(const ERR_STATE *); 249static int int_err_get_next_lib(void); 250/* The static ERR_FNS table using these defaults functions */ 251static const ERR_FNS err_defaults = 252 { 253 int_err_get, 254 int_err_del, 255 int_err_get_item, 256 int_err_set_item, 257 int_err_del_item, 258 int_thread_get, 259 int_thread_release, 260 int_thread_get_item, 261 int_thread_set_item, 262 int_thread_del_item, 263 int_err_get_next_lib 264 }; 265 266/* The replacable table of ERR_FNS functions we use at run-time */ 267static const ERR_FNS *err_fns = NULL; 268 269/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 270#define ERRFN(a) err_fns->cb_##a 271 272/* The internal state used by "err_defaults" - as such, the setting, reading, 273 * creating, and deleting of this data should only be permitted via the 274 * "err_defaults" functions. This way, a linked module can completely defer all 275 * ERR state operation (together with requisite locking) to the implementations 276 * and state in the loading application. */ 277static LHASH *int_error_hash = NULL; 278static LHASH *int_thread_hash = NULL; 279static int int_thread_hash_references = 0; 280static int int_err_library_number= ERR_LIB_USER; 281 282/* Internal function that checks whether "err_fns" is set and if not, sets it to 283 * the defaults. */ 284static void err_fns_check(void) 285 { 286 if (err_fns) return; 287 288 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 289 if (!err_fns) 290 err_fns = &err_defaults; 291 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 292 } 293 294/* API functions to get or set the underlying ERR functions. */ 295 296const ERR_FNS *ERR_get_implementation(void) 297 { 298 err_fns_check(); 299 return err_fns; 300 } 301 302int ERR_set_implementation(const ERR_FNS *fns) 303 { 304 int ret = 0; 305 306 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 307 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 308 * an error is there?! */ 309 if (!err_fns) 310 { 311 err_fns = fns; 312 ret = 1; 313 } 314 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 315 return ret; 316 } 317 318/* These are the callbacks provided to "lh_new()" when creating the LHASH tables 319 * internal to the "err_defaults" implementation. */ 320 321/* static unsigned long err_hash(ERR_STRING_DATA *a); */ 322static unsigned long err_hash(const void *a_void); 323/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */ 324static int err_cmp(const void *a_void, const void *b_void); 325/* static unsigned long pid_hash(ERR_STATE *pid); */ 326static unsigned long pid_hash(const void *pid_void); 327/* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */ 328static int pid_cmp(const void *a_void,const void *pid_void); 329static unsigned long get_error_values(int inc,int top,const char **file,int *line, 330 const char **data,int *flags); 331 332/* The internal functions used in the "err_defaults" implementation */ 333 334static LHASH *int_err_get(int create) 335 { 336 LHASH *ret = NULL; 337 338 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 339 if (!int_error_hash && create) 340 { 341 CRYPTO_push_info("int_err_get (err.c)"); 342 int_error_hash = lh_new(err_hash, err_cmp); 343 CRYPTO_pop_info(); 344 } 345 if (int_error_hash) 346 ret = int_error_hash; 347 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 348 349 return ret; 350 } 351 352static void int_err_del(void) 353 { 354 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 355 if (int_error_hash) 356 { 357 lh_free(int_error_hash); 358 int_error_hash = NULL; 359 } 360 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 361 } 362 363static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) 364 { 365 ERR_STRING_DATA *p; 366 LHASH *hash; 367 368 err_fns_check(); 369 hash = ERRFN(err_get)(0); 370 if (!hash) 371 return NULL; 372 373 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 374 p = (ERR_STRING_DATA *)lh_retrieve(hash, d); 375 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 376 377 return p; 378 } 379 380static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) 381 { 382 ERR_STRING_DATA *p; 383 LHASH *hash; 384 385 err_fns_check(); 386 hash = ERRFN(err_get)(1); 387 if (!hash) 388 return NULL; 389 390 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 391 p = (ERR_STRING_DATA *)lh_insert(hash, d); 392 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 393 394 return p; 395 } 396 397static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) 398 { 399 ERR_STRING_DATA *p; 400 LHASH *hash; 401 402 err_fns_check(); 403 hash = ERRFN(err_get)(0); 404 if (!hash) 405 return NULL; 406 407 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 408 p = (ERR_STRING_DATA *)lh_delete(hash, d); 409 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 410 411 return p; 412 } 413 414static LHASH *int_thread_get(int create) 415 { 416 LHASH *ret = NULL; 417 418 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 419 if (!int_thread_hash && create) 420 { 421 CRYPTO_push_info("int_thread_get (err.c)"); 422 int_thread_hash = lh_new(pid_hash, pid_cmp); 423 CRYPTO_pop_info(); 424 } 425 if (int_thread_hash) 426 { 427 int_thread_hash_references++; 428 ret = int_thread_hash; 429 } 430 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 431 return ret; 432 } 433 434static void int_thread_release(LHASH **hash) 435 { 436 int i; 437 438 if (hash == NULL || *hash == NULL) 439 return; 440 441 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 442 443#ifdef REF_PRINT 444 fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR"); 445#endif 446 if (i > 0) return; 447#ifdef REF_CHECK 448 if (i < 0) 449 { 450 fprintf(stderr,"int_thread_release, bad reference count\n"); 451 abort(); /* ok */ 452 } 453#endif 454 *hash = NULL; 455 } 456 457static ERR_STATE *int_thread_get_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 NULL; 466 467 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 468 p = (ERR_STATE *)lh_retrieve(hash, d); 469 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 470 471 ERRFN(thread_release)(&hash); 472 return p; 473 } 474 475static ERR_STATE *int_thread_set_item(ERR_STATE *d) 476 { 477 ERR_STATE *p; 478 LHASH *hash; 479 480 err_fns_check(); 481 hash = ERRFN(thread_get)(1); 482 if (!hash) 483 return NULL; 484 485 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 486 p = (ERR_STATE *)lh_insert(hash, d); 487 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 488 489 ERRFN(thread_release)(&hash); 490 return p; 491 } 492 493static void int_thread_del_item(const ERR_STATE *d) 494 { 495 ERR_STATE *p; 496 LHASH *hash; 497 498 err_fns_check(); 499 hash = ERRFN(thread_get)(0); 500 if (!hash) 501 return; 502 503 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 504 p = (ERR_STATE *)lh_delete(hash, d); 505 /* make sure we don't leak memory */ 506 if (int_thread_hash_references == 1 507 && int_thread_hash && (lh_num_items(int_thread_hash) == 0)) 508 { 509 lh_free(int_thread_hash); 510 int_thread_hash = NULL; 511 } 512 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 513 514 ERRFN(thread_release)(&hash); 515 if (p) 516 ERR_STATE_free(p); 517 } 518 519static int int_err_get_next_lib(void) 520 { 521 int ret; 522 523 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 524 ret = int_err_library_number++; 525 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 526 527 return ret; 528 } 529 530 531#ifndef OPENSSL_NO_ERR 532#define NUM_SYS_STR_REASONS 127 533#define LEN_SYS_STR_REASON 32 534 535static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 536/* SYS_str_reasons is filled with copies of strerror() results at 537 * initialization. 538 * 'errno' values up to 127 should cover all usual errors, 539 * others will be displayed numerically by ERR_error_string. 540 * It is crucial that we have something for each reason code 541 * that occurs in ERR_str_reasons, or bogus reason strings 542 * will be returned for SYSerr(), which always gets an errno 543 * value and never one of those 'standard' reason codes. */ 544 545static void build_SYS_str_reasons(void) 546 { 547 /* OPENSSL_malloc cannot be used here, use static storage instead */ 548 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 549 int i; 550 static int init = 1; 551 552 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 553 if (!init) 554 { 555 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 556 return; 557 } 558 559 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 560 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 561 if (!init) 562 { 563 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 564 return; 565 } 566 567 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) 568 { 569 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 570 571 str->error = (unsigned long)i; 572 if (str->string == NULL) 573 { 574 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 575 char *src = strerror(i); 576 if (src != NULL) 577 { 578 strncpy(*dest, src, sizeof *dest); 579 (*dest)[sizeof *dest - 1] = '\0'; 580 str->string = *dest; 581 } 582 } 583 if (str->string == NULL) 584 str->string = "unknown"; 585 } 586 587 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 588 * as required by ERR_load_strings. */ 589 590 init = 0; 591 592 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 593 } 594#endif 595 596#define err_clear_data(p,i) \ 597 do { \ 598 if (((p)->err_data[i] != NULL) && \ 599 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 600 { \ 601 OPENSSL_free((p)->err_data[i]); \ 602 (p)->err_data[i]=NULL; \ 603 } \ 604 (p)->err_data_flags[i]=0; \ 605 } while(0) 606 607#define err_clear(p,i) \ 608 do { \ 609 (p)->err_flags[i]=0; \ 610 (p)->err_buffer[i]=0; \ 611 err_clear_data(p,i); \ 612 (p)->err_file[i]=NULL; \ 613 (p)->err_line[i]= -1; \ 614 } while(0) 615 616static void ERR_STATE_free(ERR_STATE *s) 617 { 618 int i; 619 620 if (s == NULL) 621 return; 622 623 for (i=0; i<ERR_NUM_ERRORS; i++) 624 { 625 err_clear_data(s,i); 626 } 627 OPENSSL_free(s); 628 } 629 630void ERR_load_ERR_strings(void) 631 { 632 err_fns_check(); 633#ifndef OPENSSL_NO_ERR 634 err_load_strings(0,ERR_str_libraries); 635 err_load_strings(0,ERR_str_reasons); 636 err_load_strings(ERR_LIB_SYS,ERR_str_functs); 637 build_SYS_str_reasons(); 638 err_load_strings(ERR_LIB_SYS,SYS_str_reasons); 639#endif 640 } 641 642static void err_load_strings(int lib, ERR_STRING_DATA *str) 643 { 644 while (str->error) 645 { 646 if (lib) 647 str->error|=ERR_PACK(lib,0,0); 648 ERRFN(err_set_item)(str); 649 str++; 650 } 651 } 652 653void ERR_load_strings(int lib, ERR_STRING_DATA *str) 654 { 655 ERR_load_ERR_strings(); 656 err_load_strings(lib, str); 657 } 658 659void ERR_unload_strings(int lib, ERR_STRING_DATA *str) 660 { 661 while (str->error) 662 { 663 if (lib) 664 str->error|=ERR_PACK(lib,0,0); 665 ERRFN(err_del_item)(str); 666 str++; 667 } 668 } 669 670void ERR_free_strings(void) 671 { 672 err_fns_check(); 673 ERRFN(err_del)(); 674 } 675 676/********************************************************/ 677 678void ERR_put_error(int lib, int func, int reason, const char *file, 679 int line) 680 { 681 ERR_STATE *es; 682 683#ifdef _OSD_POSIX 684 /* In the BS2000-OSD POSIX subsystem, the compiler generates 685 * path names in the form "*POSIX(/etc/passwd)". 686 * This dirty hack strips them to something sensible. 687 * @@@ We shouldn't modify a const string, though. 688 */ 689 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) { 690 char *end; 691 692 /* Skip the "*POSIX(" prefix */ 693 file += sizeof("*POSIX(")-1; 694 end = &file[strlen(file)-1]; 695 if (*end == ')') 696 *end = '\0'; 697 /* Optional: use the basename of the path only. */ 698 if ((end = strrchr(file, '/')) != NULL) 699 file = &end[1]; 700 } 701#endif 702 es=ERR_get_state(); 703 704 es->top=(es->top+1)%ERR_NUM_ERRORS; 705 if (es->top == es->bottom) 706 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; 707 es->err_flags[es->top]=0; 708 es->err_buffer[es->top]=ERR_PACK(lib,func,reason); 709 es->err_file[es->top]=file; 710 es->err_line[es->top]=line; 711 err_clear_data(es,es->top); 712 } 713 714void ERR_clear_error(void) 715 { 716 int i; 717 ERR_STATE *es; 718 719 es=ERR_get_state(); 720 721 for (i=0; i<ERR_NUM_ERRORS; i++) 722 { 723 err_clear(es,i); 724 } 725 es->top=es->bottom=0; 726 } 727 728 729unsigned long ERR_get_error(void) 730 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); } 731 732unsigned long ERR_get_error_line(const char **file, 733 int *line) 734 { return(get_error_values(1,0,file,line,NULL,NULL)); } 735 736unsigned long ERR_get_error_line_data(const char **file, int *line, 737 const char **data, int *flags) 738 { return(get_error_values(1,0,file,line,data,flags)); } 739 740 741unsigned long ERR_peek_error(void) 742 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); } 743 744unsigned long ERR_peek_error_line(const char **file, int *line) 745 { return(get_error_values(0,0,file,line,NULL,NULL)); } 746 747unsigned long ERR_peek_error_line_data(const char **file, int *line, 748 const char **data, int *flags) 749 { return(get_error_values(0,0,file,line,data,flags)); } 750 751 752unsigned long ERR_peek_last_error(void) 753 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); } 754 755unsigned long ERR_peek_last_error_line(const char **file, int *line) 756 { return(get_error_values(0,1,file,line,NULL,NULL)); } 757 758unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 759 const char **data, int *flags) 760 { return(get_error_values(0,1,file,line,data,flags)); } 761 762 763static unsigned long get_error_values(int inc, int top, const char **file, int *line, 764 const char **data, int *flags) 765 { 766 int i=0; 767 ERR_STATE *es; 768 unsigned long ret; 769 770 es=ERR_get_state(); 771 772 if (inc && top) 773 { 774 if (file) *file = ""; 775 if (line) *line = 0; 776 if (data) *data = ""; 777 if (flags) *flags = 0; 778 779 return ERR_R_INTERNAL_ERROR; 780 } 781 782 if (es->bottom == es->top) return 0; 783 if (top) 784 i=es->top; /* last error */ 785 else 786 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */ 787 788 ret=es->err_buffer[i]; 789 if (inc) 790 { 791 es->bottom=i; 792 es->err_buffer[i]=0; 793 } 794 795 if ((file != NULL) && (line != NULL)) 796 { 797 if (es->err_file[i] == NULL) 798 { 799 *file="NA"; 800 if (line != NULL) *line=0; 801 } 802 else 803 { 804 *file=es->err_file[i]; 805 if (line != NULL) *line=es->err_line[i]; 806 } 807 } 808 809 if (data == NULL) 810 { 811 if (inc) 812 { 813 err_clear_data(es, i); 814 } 815 } 816 else 817 { 818 if (es->err_data[i] == NULL) 819 { 820 *data=""; 821 if (flags != NULL) *flags=0; 822 } 823 else 824 { 825 *data=es->err_data[i]; 826 if (flags != NULL) *flags=es->err_data_flags[i]; 827 } 828 } 829 return ret; 830 } 831 832void ERR_error_string_n(unsigned long e, char *buf, size_t len) 833 { 834 char lsbuf[64], fsbuf[64], rsbuf[64]; 835 const char *ls,*fs,*rs; 836 unsigned long l,f,r; 837 838 l=ERR_GET_LIB(e); 839 f=ERR_GET_FUNC(e); 840 r=ERR_GET_REASON(e); 841 842 ls=ERR_lib_error_string(e); 843 fs=ERR_func_error_string(e); 844 rs=ERR_reason_error_string(e); 845 846 if (ls == NULL) 847 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); 848 if (fs == NULL) 849 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); 850 if (rs == NULL) 851 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); 852 853 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf, 854 fs?fs:fsbuf, rs?rs:rsbuf); 855 if (strlen(buf) == len-1) 856 { 857 /* output may be truncated; make sure we always have 5 858 * colon-separated fields, i.e. 4 colons ... */ 859#define NUM_COLONS 4 860 if (len > NUM_COLONS) /* ... if possible */ 861 { 862 int i; 863 char *s = buf; 864 865 for (i = 0; i < NUM_COLONS; i++) 866 { 867 char *colon = strchr(s, ':'); 868 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i) 869 { 870 /* set colon no. i at last possible position 871 * (buf[len-1] is the terminating 0)*/ 872 colon = &buf[len-1] - NUM_COLONS + i; 873 *colon = ':'; 874 } 875 s = colon + 1; 876 } 877 } 878 } 879 } 880 881/* BAD for multi-threading: uses a local buffer if ret == NULL */ 882/* ERR_error_string_n should be used instead for ret != NULL 883 * as ERR_error_string cannot know how large the buffer is */ 884char *ERR_error_string(unsigned long e, char *ret) 885 { 886 static char buf[256]; 887 888 if (ret == NULL) ret=buf; 889 ERR_error_string_n(e, ret, 256); 890 891 return ret; 892 } 893 894LHASH *ERR_get_string_table(void) 895 { 896 err_fns_check(); 897 return ERRFN(err_get)(0); 898 } 899 900LHASH *ERR_get_err_state_table(void) 901 { 902 err_fns_check(); 903 return ERRFN(thread_get)(0); 904 } 905 906void ERR_release_err_state_table(LHASH **hash) 907 { 908 err_fns_check(); 909 ERRFN(thread_release)(hash); 910 } 911 912const char *ERR_lib_error_string(unsigned long e) 913 { 914 ERR_STRING_DATA d,*p; 915 unsigned long l; 916 917 err_fns_check(); 918 l=ERR_GET_LIB(e); 919 d.error=ERR_PACK(l,0,0); 920 p=ERRFN(err_get_item)(&d); 921 return((p == NULL)?NULL:p->string); 922 } 923 924const char *ERR_func_error_string(unsigned long e) 925 { 926 ERR_STRING_DATA d,*p; 927 unsigned long l,f; 928 929 err_fns_check(); 930 l=ERR_GET_LIB(e); 931 f=ERR_GET_FUNC(e); 932 d.error=ERR_PACK(l,f,0); 933 p=ERRFN(err_get_item)(&d); 934 return((p == NULL)?NULL:p->string); 935 } 936 937const char *ERR_reason_error_string(unsigned long e) 938 { 939 ERR_STRING_DATA d,*p=NULL; 940 unsigned long l,r; 941 942 err_fns_check(); 943 l=ERR_GET_LIB(e); 944 r=ERR_GET_REASON(e); 945 d.error=ERR_PACK(l,0,r); 946 p=ERRFN(err_get_item)(&d); 947 if (!p) 948 { 949 d.error=ERR_PACK(0,0,r); 950 p=ERRFN(err_get_item)(&d); 951 } 952 return((p == NULL)?NULL:p->string); 953 } 954 955/* static unsigned long err_hash(ERR_STRING_DATA *a) */ 956static unsigned long err_hash(const void *a_void) 957 { 958 unsigned long ret,l; 959 960 l=((const ERR_STRING_DATA *)a_void)->error; 961 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 962 return(ret^ret%19*13); 963 } 964 965/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */ 966static int err_cmp(const void *a_void, const void *b_void) 967 { 968 return((int)(((const ERR_STRING_DATA *)a_void)->error - 969 ((const ERR_STRING_DATA *)b_void)->error)); 970 } 971 972/* static unsigned long pid_hash(ERR_STATE *a) */ 973static unsigned long pid_hash(const void *a_void) 974 { 975 return(((const ERR_STATE *)a_void)->pid*13); 976 } 977 978/* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */ 979static int pid_cmp(const void *a_void, const void *b_void) 980 { 981 return((int)((long)((const ERR_STATE *)a_void)->pid - 982 (long)((const ERR_STATE *)b_void)->pid)); 983 } 984 985void ERR_remove_state(unsigned long pid) 986 { 987 ERR_STATE tmp; 988 989 err_fns_check(); 990 if (pid == 0) 991 pid=(unsigned long)CRYPTO_thread_id(); 992 tmp.pid=pid; 993 /* thread_del_item automatically destroys the LHASH if the number of 994 * items reaches zero. */ 995 ERRFN(thread_del_item)(&tmp); 996 } 997 998ERR_STATE *ERR_get_state(void) 999 { 1000 static ERR_STATE fallback; 1001 ERR_STATE *ret,tmp,*tmpp=NULL; 1002 int i; 1003 unsigned long pid; 1004 1005 err_fns_check(); 1006 pid=(unsigned long)CRYPTO_thread_id(); 1007 tmp.pid=pid; 1008 ret=ERRFN(thread_get_item)(&tmp); 1009 1010 /* ret == the error state, if NULL, make a new one */ 1011 if (ret == NULL) 1012 { 1013 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); 1014 if (ret == NULL) return(&fallback); 1015 ret->pid=pid; 1016 ret->top=0; 1017 ret->bottom=0; 1018 for (i=0; i<ERR_NUM_ERRORS; i++) 1019 { 1020 ret->err_data[i]=NULL; 1021 ret->err_data_flags[i]=0; 1022 } 1023 tmpp = ERRFN(thread_set_item)(ret); 1024 /* To check if insertion failed, do a get. */ 1025 if (ERRFN(thread_get_item)(ret) != ret) 1026 { 1027 ERR_STATE_free(ret); /* could not insert it */ 1028 return(&fallback); 1029 } 1030 /* If a race occured in this function and we came second, tmpp 1031 * is the first one that we just replaced. */ 1032 if (tmpp) 1033 ERR_STATE_free(tmpp); 1034 } 1035 return ret; 1036 } 1037 1038int ERR_get_next_error_library(void) 1039 { 1040 err_fns_check(); 1041 return ERRFN(get_next_lib)(); 1042 } 1043 1044void ERR_set_error_data(char *data, int flags) 1045 { 1046 ERR_STATE *es; 1047 int i; 1048 1049 es=ERR_get_state(); 1050 1051 i=es->top; 1052 if (i == 0) 1053 i=ERR_NUM_ERRORS-1; 1054 1055 err_clear_data(es,i); 1056 es->err_data[i]=data; 1057 es->err_data_flags[i]=flags; 1058 } 1059 1060void ERR_add_error_data(int num, ...) 1061 { 1062 va_list args; 1063 int i,n,s; 1064 char *str,*p,*a; 1065 1066 s=80; 1067 str=OPENSSL_malloc(s+1); 1068 if (str == NULL) return; 1069 str[0]='\0'; 1070 1071 va_start(args, num); 1072 n=0; 1073 for (i=0; i<num; i++) 1074 { 1075 a=va_arg(args, char*); 1076 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 1077 if (a != NULL) 1078 { 1079 n+=strlen(a); 1080 if (n > s) 1081 { 1082 s=n+20; 1083 p=OPENSSL_realloc(str,s+1); 1084 if (p == NULL) 1085 { 1086 OPENSSL_free(str); 1087 goto err; 1088 } 1089 else 1090 str=p; 1091 } 1092 BUF_strlcat(str,a,(size_t)s+1); 1093 } 1094 } 1095 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); 1096 1097err: 1098 va_end(args); 1099 } 1100 1101int ERR_set_mark(void) 1102 { 1103 ERR_STATE *es; 1104 1105 es=ERR_get_state(); 1106 1107 if (es->bottom == es->top) return 0; 1108 es->err_flags[es->top]|=ERR_FLAG_MARK; 1109 return 1; 1110 } 1111 1112int ERR_pop_to_mark(void) 1113 { 1114 ERR_STATE *es; 1115 1116 es=ERR_get_state(); 1117 1118 while(es->bottom != es->top 1119 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) 1120 { 1121 err_clear(es,es->top); 1122 es->top-=1; 1123 if (es->top == -1) es->top=ERR_NUM_ERRORS-1; 1124 } 1125 1126 if (es->bottom == es->top) return 0; 1127 es->err_flags[es->top]&=~ERR_FLAG_MARK; 1128 return 1; 1129 } 1130