err.c revision 1.16
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_FIPS,0,0) ,"FIPS routines"}, 153{ERR_PACK(ERR_LIB_CMS,0,0) ,"CMS routines"}, 154{0,NULL}, 155 }; 156 157static ERR_STRING_DATA ERR_str_functs[]= 158 { 159 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"}, 160 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"}, 161 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"}, 162 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"}, 163 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"}, 164 {ERR_PACK(0,SYS_F_BIND,0), "bind"}, 165 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"}, 166 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"}, 167#ifdef OPENSSL_SYS_WINDOWS 168 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"}, 169#endif 170 {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"}, 171 {ERR_PACK(0,SYS_F_FREAD,0), "fread"}, 172 {0,NULL}, 173 }; 174 175static ERR_STRING_DATA ERR_str_reasons[]= 176 { 177{ERR_R_SYS_LIB ,"system lib"}, 178{ERR_R_BN_LIB ,"BN lib"}, 179{ERR_R_RSA_LIB ,"RSA lib"}, 180{ERR_R_DH_LIB ,"DH lib"}, 181{ERR_R_EVP_LIB ,"EVP lib"}, 182{ERR_R_BUF_LIB ,"BUF lib"}, 183{ERR_R_OBJ_LIB ,"OBJ lib"}, 184{ERR_R_PEM_LIB ,"PEM lib"}, 185{ERR_R_DSA_LIB ,"DSA lib"}, 186{ERR_R_X509_LIB ,"X509 lib"}, 187{ERR_R_ASN1_LIB ,"ASN1 lib"}, 188{ERR_R_CONF_LIB ,"CONF lib"}, 189{ERR_R_CRYPTO_LIB ,"CRYPTO lib"}, 190{ERR_R_EC_LIB ,"EC lib"}, 191{ERR_R_SSL_LIB ,"SSL lib"}, 192{ERR_R_BIO_LIB ,"BIO lib"}, 193{ERR_R_PKCS7_LIB ,"PKCS7 lib"}, 194{ERR_R_X509V3_LIB ,"X509V3 lib"}, 195{ERR_R_PKCS12_LIB ,"PKCS12 lib"}, 196{ERR_R_RAND_LIB ,"RAND lib"}, 197{ERR_R_DSO_LIB ,"DSO lib"}, 198{ERR_R_ENGINE_LIB ,"ENGINE lib"}, 199{ERR_R_OCSP_LIB ,"OCSP lib"}, 200 201{ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"}, 202{ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"}, 203{ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"}, 204{ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"}, 205{ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"}, 206{ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"}, 207 208{ERR_R_FATAL ,"fatal"}, 209{ERR_R_MALLOC_FAILURE ,"malloc failure"}, 210{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"}, 211{ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"}, 212{ERR_R_INTERNAL_ERROR ,"internal error"}, 213{ERR_R_DISABLED ,"called a function that was disabled at compile-time"}, 214 215{0,NULL}, 216 }; 217#endif 218 219 220/* Define the predeclared (but externally opaque) "ERR_FNS" type */ 221struct st_ERR_FNS 222 { 223 /* Works on the "error_hash" string table */ 224 LHASH *(*cb_err_get)(int create); 225 void (*cb_err_del)(void); 226 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 227 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 228 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 229 /* Works on the "thread_hash" error-state table */ 230 LHASH *(*cb_thread_get)(int create); 231 void (*cb_thread_release)(LHASH **hash); 232 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 233 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 234 void (*cb_thread_del_item)(const ERR_STATE *); 235 /* Returns the next available error "library" numbers */ 236 int (*cb_get_next_lib)(void); 237 }; 238 239/* Predeclarations of the "err_defaults" functions */ 240static LHASH *int_err_get(int create); 241static void int_err_del(void); 242static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 243static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 244static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 245static LHASH *int_thread_get(int create); 246static void int_thread_release(LHASH **hash); 247static ERR_STATE *int_thread_get_item(const ERR_STATE *); 248static ERR_STATE *int_thread_set_item(ERR_STATE *); 249static void int_thread_del_item(const ERR_STATE *); 250static int int_err_get_next_lib(void); 251/* The static ERR_FNS table using these defaults functions */ 252static const ERR_FNS err_defaults = 253 { 254 int_err_get, 255 int_err_del, 256 int_err_get_item, 257 int_err_set_item, 258 int_err_del_item, 259 int_thread_get, 260 int_thread_release, 261 int_thread_get_item, 262 int_thread_set_item, 263 int_thread_del_item, 264 int_err_get_next_lib 265 }; 266 267/* The replacable table of ERR_FNS functions we use at run-time */ 268static const ERR_FNS *err_fns = NULL; 269 270/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 271#define ERRFN(a) err_fns->cb_##a 272 273/* The internal state used by "err_defaults" - as such, the setting, reading, 274 * creating, and deleting of this data should only be permitted via the 275 * "err_defaults" functions. This way, a linked module can completely defer all 276 * ERR state operation (together with requisite locking) to the implementations 277 * and state in the loading application. */ 278static LHASH *int_error_hash = NULL; 279static LHASH *int_thread_hash = NULL; 280static int int_thread_hash_references = 0; 281static int int_err_library_number= ERR_LIB_USER; 282 283/* Internal function that checks whether "err_fns" is set and if not, sets it to 284 * the defaults. */ 285static void err_fns_check(void) 286 { 287 if (err_fns) return; 288 289 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 290 if (!err_fns) 291 err_fns = &err_defaults; 292 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 293 } 294 295/* API functions to get or set the underlying ERR functions. */ 296 297const ERR_FNS *ERR_get_implementation(void) 298 { 299 err_fns_check(); 300 return err_fns; 301 } 302 303int ERR_set_implementation(const ERR_FNS *fns) 304 { 305 int ret = 0; 306 307 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 308 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 309 * an error is there?! */ 310 if (!err_fns) 311 { 312 err_fns = fns; 313 ret = 1; 314 } 315 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 316 return ret; 317 } 318 319/* These are the callbacks provided to "lh_new()" when creating the LHASH tables 320 * internal to the "err_defaults" implementation. */ 321 322/* static unsigned long err_hash(ERR_STRING_DATA *a); */ 323static unsigned long err_hash(const void *a_void); 324/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */ 325static int err_cmp(const void *a_void, const void *b_void); 326/* static unsigned long pid_hash(ERR_STATE *pid); */ 327static unsigned long pid_hash(const void *pid_void); 328/* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */ 329static int pid_cmp(const void *a_void,const void *pid_void); 330static unsigned long get_error_values(int inc,int top,const char **file,int *line, 331 const char **data,int *flags); 332 333/* The internal functions used in the "err_defaults" implementation */ 334 335static LHASH *int_err_get(int create) 336 { 337 LHASH *ret = NULL; 338 339 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 340 if (!int_error_hash && create) 341 { 342 CRYPTO_push_info("int_err_get (err.c)"); 343 int_error_hash = lh_new(err_hash, err_cmp); 344 CRYPTO_pop_info(); 345 } 346 if (int_error_hash) 347 ret = int_error_hash; 348 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 349 350 return ret; 351 } 352 353static void int_err_del(void) 354 { 355 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 356 if (int_error_hash) 357 { 358 lh_free(int_error_hash); 359 int_error_hash = NULL; 360 } 361 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 362 } 363 364static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) 365 { 366 ERR_STRING_DATA *p; 367 LHASH *hash; 368 369 err_fns_check(); 370 hash = ERRFN(err_get)(0); 371 if (!hash) 372 return NULL; 373 374 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 375 p = (ERR_STRING_DATA *)lh_retrieve(hash, d); 376 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 377 378 return p; 379 } 380 381static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) 382 { 383 ERR_STRING_DATA *p; 384 LHASH *hash; 385 386 err_fns_check(); 387 hash = ERRFN(err_get)(1); 388 if (!hash) 389 return NULL; 390 391 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 392 p = (ERR_STRING_DATA *)lh_insert(hash, d); 393 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 394 395 return p; 396 } 397 398static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) 399 { 400 ERR_STRING_DATA *p; 401 LHASH *hash; 402 403 err_fns_check(); 404 hash = ERRFN(err_get)(0); 405 if (!hash) 406 return NULL; 407 408 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 409 p = (ERR_STRING_DATA *)lh_delete(hash, d); 410 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 411 412 return p; 413 } 414 415static LHASH *int_thread_get(int create) 416 { 417 LHASH *ret = NULL; 418 419 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 420 if (!int_thread_hash && create) 421 { 422 CRYPTO_push_info("int_thread_get (err.c)"); 423 int_thread_hash = lh_new(pid_hash, pid_cmp); 424 CRYPTO_pop_info(); 425 } 426 if (int_thread_hash) 427 { 428 int_thread_hash_references++; 429 ret = int_thread_hash; 430 } 431 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 432 return ret; 433 } 434 435static void int_thread_release(LHASH **hash) 436 { 437 int i; 438 439 if (hash == NULL || *hash == NULL) 440 return; 441 442 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 443 444#ifdef REF_PRINT 445 fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR"); 446#endif 447 if (i > 0) return; 448#ifdef REF_CHECK 449 if (i < 0) 450 { 451 fprintf(stderr,"int_thread_release, bad reference count\n"); 452 abort(); /* ok */ 453 } 454#endif 455 *hash = NULL; 456 } 457 458static ERR_STATE *int_thread_get_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 NULL; 467 468 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 469 p = (ERR_STATE *)lh_retrieve(hash, d); 470 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 471 472 ERRFN(thread_release)(&hash); 473 return p; 474 } 475 476static ERR_STATE *int_thread_set_item(ERR_STATE *d) 477 { 478 ERR_STATE *p; 479 LHASH *hash; 480 481 err_fns_check(); 482 hash = ERRFN(thread_get)(1); 483 if (!hash) 484 return NULL; 485 486 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 487 p = (ERR_STATE *)lh_insert(hash, d); 488 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 489 490 ERRFN(thread_release)(&hash); 491 return p; 492 } 493 494static void int_thread_del_item(const ERR_STATE *d) 495 { 496 ERR_STATE *p; 497 LHASH *hash; 498 499 err_fns_check(); 500 hash = ERRFN(thread_get)(0); 501 if (!hash) 502 return; 503 504 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 505 p = (ERR_STATE *)lh_delete(hash, d); 506 /* make sure we don't leak memory */ 507 if (int_thread_hash_references == 1 508 && int_thread_hash && (lh_num_items(int_thread_hash) == 0)) 509 { 510 lh_free(int_thread_hash); 511 int_thread_hash = NULL; 512 } 513 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 514 515 ERRFN(thread_release)(&hash); 516 if (p) 517 ERR_STATE_free(p); 518 } 519 520static int int_err_get_next_lib(void) 521 { 522 int ret; 523 524 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 525 ret = int_err_library_number++; 526 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 527 528 return ret; 529 } 530 531 532#ifndef OPENSSL_NO_ERR 533#define NUM_SYS_STR_REASONS 127 534#define LEN_SYS_STR_REASON 32 535 536static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 537/* SYS_str_reasons is filled with copies of strerror() results at 538 * initialization. 539 * 'errno' values up to 127 should cover all usual errors, 540 * others will be displayed numerically by ERR_error_string. 541 * It is crucial that we have something for each reason code 542 * that occurs in ERR_str_reasons, or bogus reason strings 543 * will be returned for SYSerr(), which always gets an errno 544 * value and never one of those 'standard' reason codes. */ 545 546static void build_SYS_str_reasons(void) 547 { 548 /* OPENSSL_malloc cannot be used here, use static storage instead */ 549 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 550 int i; 551 static int init = 1; 552 553 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 554 if (!init) 555 { 556 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 557 return; 558 } 559 560 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 561 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 562 if (!init) 563 { 564 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 565 return; 566 } 567 568 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) 569 { 570 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 571 572 str->error = (unsigned long)i; 573 if (str->string == NULL) 574 { 575 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 576 char *src = strerror(i); 577 if (src != NULL) 578 { 579 strncpy(*dest, src, sizeof *dest); 580 (*dest)[sizeof *dest - 1] = '\0'; 581 str->string = *dest; 582 } 583 } 584 if (str->string == NULL) 585 str->string = "unknown"; 586 } 587 588 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 589 * as required by ERR_load_strings. */ 590 591 init = 0; 592 593 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 594 } 595#endif 596 597#define err_clear_data(p,i) \ 598 do { \ 599 if (((p)->err_data[i] != NULL) && \ 600 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 601 { \ 602 OPENSSL_free((p)->err_data[i]); \ 603 (p)->err_data[i]=NULL; \ 604 } \ 605 (p)->err_data_flags[i]=0; \ 606 } while(0) 607 608#define err_clear(p,i) \ 609 do { \ 610 (p)->err_flags[i]=0; \ 611 (p)->err_buffer[i]=0; \ 612 err_clear_data(p,i); \ 613 (p)->err_file[i]=NULL; \ 614 (p)->err_line[i]= -1; \ 615 } while(0) 616 617static void ERR_STATE_free(ERR_STATE *s) 618 { 619 int i; 620 621 if (s == NULL) 622 return; 623 624 for (i=0; i<ERR_NUM_ERRORS; i++) 625 { 626 err_clear_data(s,i); 627 } 628 OPENSSL_free(s); 629 } 630 631void ERR_load_ERR_strings(void) 632 { 633 err_fns_check(); 634#ifndef OPENSSL_NO_ERR 635 err_load_strings(0,ERR_str_libraries); 636 err_load_strings(0,ERR_str_reasons); 637 err_load_strings(ERR_LIB_SYS,ERR_str_functs); 638 build_SYS_str_reasons(); 639 err_load_strings(ERR_LIB_SYS,SYS_str_reasons); 640#endif 641 } 642 643static void err_load_strings(int lib, ERR_STRING_DATA *str) 644 { 645 while (str->error) 646 { 647 if (lib) 648 str->error|=ERR_PACK(lib,0,0); 649 ERRFN(err_set_item)(str); 650 str++; 651 } 652 } 653 654void ERR_load_strings(int lib, ERR_STRING_DATA *str) 655 { 656 ERR_load_ERR_strings(); 657 err_load_strings(lib, str); 658 } 659 660void ERR_unload_strings(int lib, ERR_STRING_DATA *str) 661 { 662 while (str->error) 663 { 664 if (lib) 665 str->error|=ERR_PACK(lib,0,0); 666 ERRFN(err_del_item)(str); 667 str++; 668 } 669 } 670 671void ERR_free_strings(void) 672 { 673 err_fns_check(); 674 ERRFN(err_del)(); 675 } 676 677/********************************************************/ 678 679void ERR_put_error(int lib, int func, int reason, const char *file, 680 int line) 681 { 682 ERR_STATE *es; 683 684#ifdef _OSD_POSIX 685 /* In the BS2000-OSD POSIX subsystem, the compiler generates 686 * path names in the form "*POSIX(/etc/passwd)". 687 * This dirty hack strips them to something sensible. 688 * @@@ We shouldn't modify a const string, though. 689 */ 690 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) { 691 char *end; 692 693 /* Skip the "*POSIX(" prefix */ 694 file += sizeof("*POSIX(")-1; 695 end = &file[strlen(file)-1]; 696 if (*end == ')') 697 *end = '\0'; 698 /* Optional: use the basename of the path only. */ 699 if ((end = strrchr(file, '/')) != NULL) 700 file = &end[1]; 701 } 702#endif 703 es=ERR_get_state(); 704 705 es->top=(es->top+1)%ERR_NUM_ERRORS; 706 if (es->top == es->bottom) 707 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; 708 es->err_flags[es->top]=0; 709 es->err_buffer[es->top]=ERR_PACK(lib,func,reason); 710 es->err_file[es->top]=file; 711 es->err_line[es->top]=line; 712 err_clear_data(es,es->top); 713 } 714 715void ERR_clear_error(void) 716 { 717 int i; 718 ERR_STATE *es; 719 720 es=ERR_get_state(); 721 722 for (i=0; i<ERR_NUM_ERRORS; i++) 723 { 724 err_clear(es,i); 725 } 726 es->top=es->bottom=0; 727 } 728 729 730unsigned long ERR_get_error(void) 731 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); } 732 733unsigned long ERR_get_error_line(const char **file, 734 int *line) 735 { return(get_error_values(1,0,file,line,NULL,NULL)); } 736 737unsigned long ERR_get_error_line_data(const char **file, int *line, 738 const char **data, int *flags) 739 { return(get_error_values(1,0,file,line,data,flags)); } 740 741 742unsigned long ERR_peek_error(void) 743 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); } 744 745unsigned long ERR_peek_error_line(const char **file, int *line) 746 { return(get_error_values(0,0,file,line,NULL,NULL)); } 747 748unsigned long ERR_peek_error_line_data(const char **file, int *line, 749 const char **data, int *flags) 750 { return(get_error_values(0,0,file,line,data,flags)); } 751 752 753unsigned long ERR_peek_last_error(void) 754 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); } 755 756unsigned long ERR_peek_last_error_line(const char **file, int *line) 757 { return(get_error_values(0,1,file,line,NULL,NULL)); } 758 759unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 760 const char **data, int *flags) 761 { return(get_error_values(0,1,file,line,data,flags)); } 762 763 764static unsigned long get_error_values(int inc, int top, const char **file, int *line, 765 const char **data, int *flags) 766 { 767 int i=0; 768 ERR_STATE *es; 769 unsigned long ret; 770 771 es=ERR_get_state(); 772 773 if (inc && top) 774 { 775 if (file) *file = ""; 776 if (line) *line = 0; 777 if (data) *data = ""; 778 if (flags) *flags = 0; 779 780 return ERR_R_INTERNAL_ERROR; 781 } 782 783 if (es->bottom == es->top) return 0; 784 if (top) 785 i=es->top; /* last error */ 786 else 787 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */ 788 789 ret=es->err_buffer[i]; 790 if (inc) 791 { 792 es->bottom=i; 793 es->err_buffer[i]=0; 794 } 795 796 if ((file != NULL) && (line != NULL)) 797 { 798 if (es->err_file[i] == NULL) 799 { 800 *file="NA"; 801 if (line != NULL) *line=0; 802 } 803 else 804 { 805 *file=es->err_file[i]; 806 if (line != NULL) *line=es->err_line[i]; 807 } 808 } 809 810 if (data == NULL) 811 { 812 if (inc) 813 { 814 err_clear_data(es, i); 815 } 816 } 817 else 818 { 819 if (es->err_data[i] == NULL) 820 { 821 *data=""; 822 if (flags != NULL) *flags=0; 823 } 824 else 825 { 826 *data=es->err_data[i]; 827 if (flags != NULL) *flags=es->err_data_flags[i]; 828 } 829 } 830 return ret; 831 } 832 833void ERR_error_string_n(unsigned long e, char *buf, size_t len) 834 { 835 char lsbuf[64], fsbuf[64], rsbuf[64]; 836 const char *ls,*fs,*rs; 837 unsigned long l,f,r; 838 839 l=ERR_GET_LIB(e); 840 f=ERR_GET_FUNC(e); 841 r=ERR_GET_REASON(e); 842 843 ls=ERR_lib_error_string(e); 844 fs=ERR_func_error_string(e); 845 rs=ERR_reason_error_string(e); 846 847 if (ls == NULL) 848 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); 849 if (fs == NULL) 850 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); 851 if (rs == NULL) 852 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); 853 854 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf, 855 fs?fs:fsbuf, rs?rs:rsbuf); 856 if (strlen(buf) == len-1) 857 { 858 /* output may be truncated; make sure we always have 5 859 * colon-separated fields, i.e. 4 colons ... */ 860#define NUM_COLONS 4 861 if (len > NUM_COLONS) /* ... if possible */ 862 { 863 int i; 864 char *s = buf; 865 866 for (i = 0; i < NUM_COLONS; i++) 867 { 868 char *colon = strchr(s, ':'); 869 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i) 870 { 871 /* set colon no. i at last possible position 872 * (buf[len-1] is the terminating 0)*/ 873 colon = &buf[len-1] - NUM_COLONS + i; 874 *colon = ':'; 875 } 876 s = colon + 1; 877 } 878 } 879 } 880 } 881 882/* BAD for multi-threading: uses a local buffer if ret == NULL */ 883/* ERR_error_string_n should be used instead for ret != NULL 884 * as ERR_error_string cannot know how large the buffer is */ 885char *ERR_error_string(unsigned long e, char *ret) 886 { 887 static char buf[256]; 888 889 if (ret == NULL) ret=buf; 890 ERR_error_string_n(e, ret, 256); 891 892 return ret; 893 } 894 895LHASH *ERR_get_string_table(void) 896 { 897 err_fns_check(); 898 return ERRFN(err_get)(0); 899 } 900 901LHASH *ERR_get_err_state_table(void) 902 { 903 err_fns_check(); 904 return ERRFN(thread_get)(0); 905 } 906 907void ERR_release_err_state_table(LHASH **hash) 908 { 909 err_fns_check(); 910 ERRFN(thread_release)(hash); 911 } 912 913const char *ERR_lib_error_string(unsigned long e) 914 { 915 ERR_STRING_DATA d,*p; 916 unsigned long l; 917 918 err_fns_check(); 919 l=ERR_GET_LIB(e); 920 d.error=ERR_PACK(l,0,0); 921 p=ERRFN(err_get_item)(&d); 922 return((p == NULL)?NULL:p->string); 923 } 924 925const char *ERR_func_error_string(unsigned long e) 926 { 927 ERR_STRING_DATA d,*p; 928 unsigned long l,f; 929 930 err_fns_check(); 931 l=ERR_GET_LIB(e); 932 f=ERR_GET_FUNC(e); 933 d.error=ERR_PACK(l,f,0); 934 p=ERRFN(err_get_item)(&d); 935 return((p == NULL)?NULL:p->string); 936 } 937 938const char *ERR_reason_error_string(unsigned long e) 939 { 940 ERR_STRING_DATA d,*p=NULL; 941 unsigned long l,r; 942 943 err_fns_check(); 944 l=ERR_GET_LIB(e); 945 r=ERR_GET_REASON(e); 946 d.error=ERR_PACK(l,0,r); 947 p=ERRFN(err_get_item)(&d); 948 if (!p) 949 { 950 d.error=ERR_PACK(0,0,r); 951 p=ERRFN(err_get_item)(&d); 952 } 953 return((p == NULL)?NULL:p->string); 954 } 955 956/* static unsigned long err_hash(ERR_STRING_DATA *a) */ 957static unsigned long err_hash(const void *a_void) 958 { 959 unsigned long ret,l; 960 961 l=((const ERR_STRING_DATA *)a_void)->error; 962 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 963 return(ret^ret%19*13); 964 } 965 966/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */ 967static int err_cmp(const void *a_void, const void *b_void) 968 { 969 return((int)(((const ERR_STRING_DATA *)a_void)->error - 970 ((const ERR_STRING_DATA *)b_void)->error)); 971 } 972 973/* static unsigned long pid_hash(ERR_STATE *a) */ 974static unsigned long pid_hash(const void *a_void) 975 { 976 return(((const ERR_STATE *)a_void)->pid*13); 977 } 978 979/* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */ 980static int pid_cmp(const void *a_void, const void *b_void) 981 { 982 return((int)((long)((const ERR_STATE *)a_void)->pid - 983 (long)((const ERR_STATE *)b_void)->pid)); 984 } 985 986void ERR_remove_state(unsigned long pid) 987 { 988 ERR_STATE tmp; 989 990 err_fns_check(); 991 if (pid == 0) 992 pid=(unsigned long)CRYPTO_thread_id(); 993 tmp.pid=pid; 994 /* thread_del_item automatically destroys the LHASH if the number of 995 * items reaches zero. */ 996 ERRFN(thread_del_item)(&tmp); 997 } 998 999ERR_STATE *ERR_get_state(void) 1000 { 1001 static ERR_STATE fallback; 1002 ERR_STATE *ret,tmp,*tmpp=NULL; 1003 int i; 1004 unsigned long pid; 1005 1006 err_fns_check(); 1007 pid=(unsigned long)CRYPTO_thread_id(); 1008 tmp.pid=pid; 1009 ret=ERRFN(thread_get_item)(&tmp); 1010 1011 /* ret == the error state, if NULL, make a new one */ 1012 if (ret == NULL) 1013 { 1014 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); 1015 if (ret == NULL) return(&fallback); 1016 ret->pid=pid; 1017 ret->top=0; 1018 ret->bottom=0; 1019 for (i=0; i<ERR_NUM_ERRORS; i++) 1020 { 1021 ret->err_data[i]=NULL; 1022 ret->err_data_flags[i]=0; 1023 } 1024 tmpp = ERRFN(thread_set_item)(ret); 1025 /* To check if insertion failed, do a get. */ 1026 if (ERRFN(thread_get_item)(ret) != ret) 1027 { 1028 ERR_STATE_free(ret); /* could not insert it */ 1029 return(&fallback); 1030 } 1031 /* If a race occured in this function and we came second, tmpp 1032 * is the first one that we just replaced. */ 1033 if (tmpp) 1034 ERR_STATE_free(tmpp); 1035 } 1036 return ret; 1037 } 1038 1039int ERR_get_next_error_library(void) 1040 { 1041 err_fns_check(); 1042 return ERRFN(get_next_lib)(); 1043 } 1044 1045void ERR_set_error_data(char *data, int flags) 1046 { 1047 ERR_STATE *es; 1048 int i; 1049 1050 es=ERR_get_state(); 1051 1052 i=es->top; 1053 if (i == 0) 1054 i=ERR_NUM_ERRORS-1; 1055 1056 err_clear_data(es,i); 1057 es->err_data[i]=data; 1058 es->err_data_flags[i]=flags; 1059 } 1060 1061void ERR_add_error_data(int num, ...) 1062 { 1063 va_list args; 1064 int i,n,s; 1065 char *str,*p,*a; 1066 1067 s=80; 1068 str=OPENSSL_malloc(s+1); 1069 if (str == NULL) return; 1070 str[0]='\0'; 1071 1072 va_start(args, num); 1073 n=0; 1074 for (i=0; i<num; i++) 1075 { 1076 a=va_arg(args, char*); 1077 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 1078 if (a != NULL) 1079 { 1080 n+=strlen(a); 1081 if (n > s) 1082 { 1083 s=n+20; 1084 p=OPENSSL_realloc(str,s+1); 1085 if (p == NULL) 1086 { 1087 OPENSSL_free(str); 1088 goto err; 1089 } 1090 else 1091 str=p; 1092 } 1093 BUF_strlcat(str,a,(size_t)s+1); 1094 } 1095 } 1096 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); 1097 1098err: 1099 va_end(args); 1100 } 1101 1102int ERR_set_mark(void) 1103 { 1104 ERR_STATE *es; 1105 1106 es=ERR_get_state(); 1107 1108 if (es->bottom == es->top) return 0; 1109 es->err_flags[es->top]|=ERR_FLAG_MARK; 1110 return 1; 1111 } 1112 1113int ERR_pop_to_mark(void) 1114 { 1115 ERR_STATE *es; 1116 1117 es=ERR_get_state(); 1118 1119 while(es->bottom != es->top 1120 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) 1121 { 1122 err_clear(es,es->top); 1123 es->top-=1; 1124 if (es->top == -1) es->top=ERR_NUM_ERRORS-1; 1125 } 1126 1127 if (es->bottom == es->top) return 0; 1128 es->err_flags[es->top]&=~ERR_FLAG_MARK; 1129 return 1; 1130 } 1131