err.c revision 1.4
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) 1998-2000 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/err.h> 120#include <openssl/crypto.h> 121 122 123static LHASH *error_hash=NULL; 124static LHASH *thread_hash=NULL; 125 126static unsigned long err_hash(ERR_STRING_DATA *a); 127static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); 128static unsigned long pid_hash(ERR_STATE *pid); 129static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); 130static unsigned long get_error_values(int inc,const char **file,int *line, 131 const char **data,int *flags); 132static void ERR_STATE_free(ERR_STATE *s); 133#ifndef NO_ERR 134static ERR_STRING_DATA ERR_str_libraries[]= 135 { 136{ERR_PACK(ERR_LIB_NONE,0,0) ,"unknown library"}, 137{ERR_PACK(ERR_LIB_SYS,0,0) ,"system library"}, 138{ERR_PACK(ERR_LIB_BN,0,0) ,"bignum routines"}, 139{ERR_PACK(ERR_LIB_RSA,0,0) ,"rsa routines"}, 140{ERR_PACK(ERR_LIB_DH,0,0) ,"Diffie-Hellman routines"}, 141{ERR_PACK(ERR_LIB_EVP,0,0) ,"digital envelope routines"}, 142{ERR_PACK(ERR_LIB_BUF,0,0) ,"memory buffer routines"}, 143{ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"}, 144{ERR_PACK(ERR_LIB_OBJ,0,0) ,"object identifier routines"}, 145{ERR_PACK(ERR_LIB_PEM,0,0) ,"PEM routines"}, 146{ERR_PACK(ERR_LIB_ASN1,0,0) ,"asn1 encoding routines"}, 147{ERR_PACK(ERR_LIB_X509,0,0) ,"x509 certificate routines"}, 148{ERR_PACK(ERR_LIB_CONF,0,0) ,"configuration file routines"}, 149{ERR_PACK(ERR_LIB_METH,0,0) ,"X509 lookup 'method' routines"}, 150{ERR_PACK(ERR_LIB_SSL,0,0) ,"SSL routines"}, 151{ERR_PACK(ERR_LIB_RSAREF,0,0) ,"RSAref routines"}, 152{ERR_PACK(ERR_LIB_PROXY,0,0) ,"Proxy routines"}, 153{ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"}, 154{ERR_PACK(ERR_LIB_PKCS7,0,0) ,"PKCS7 routines"}, 155{ERR_PACK(ERR_LIB_X509V3,0,0) ,"X509 V3 routines"}, 156{ERR_PACK(ERR_LIB_PKCS12,0,0) ,"PKCS12 routines"}, 157{ERR_PACK(ERR_LIB_RAND,0,0) ,"random number generator"}, 158{0,NULL}, 159 }; 160 161static ERR_STRING_DATA ERR_str_functs[]= 162 { 163 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"}, 164 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"}, 165 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"}, 166 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"}, 167 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"}, 168 {ERR_PACK(0,SYS_F_BIND,0), "bind"}, 169 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"}, 170 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"}, 171#ifdef WINDOWS 172 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"}, 173#endif 174 {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"}, 175 {0,NULL}, 176 }; 177 178static ERR_STRING_DATA ERR_str_reasons[]= 179 { 180{ERR_R_FATAL ,"fatal"}, 181{ERR_R_SYS_LIB ,"system lib"}, 182{ERR_R_BN_LIB ,"BN lib"}, 183{ERR_R_RSA_LIB ,"RSA lib"}, 184{ERR_R_DH_LIB ,"DH lib"}, 185{ERR_R_EVP_LIB ,"EVP lib"}, 186{ERR_R_BUF_LIB ,"BUF lib"}, 187{ERR_R_BIO_LIB ,"BIO lib"}, 188{ERR_R_OBJ_LIB ,"OBJ lib"}, 189{ERR_R_PEM_LIB ,"PEM lib"}, 190{ERR_R_X509_LIB ,"X509 lib"}, 191{ERR_R_METH_LIB ,"METH lib"}, 192{ERR_R_ASN1_LIB ,"ASN1 lib"}, 193{ERR_R_CONF_LIB ,"CONF lib"}, 194{ERR_R_SSL_LIB ,"SSL lib"}, 195{ERR_R_PROXY_LIB ,"PROXY lib"}, 196{ERR_R_BIO_LIB ,"BIO lib"}, 197{ERR_R_PKCS7_LIB ,"PKCS7 lib"}, 198{ERR_R_PKCS12_LIB ,"PKCS12 lib"}, 199{ERR_R_MALLOC_FAILURE ,"Malloc failure"}, 200{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"}, 201{ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"}, 202{ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"}, 203{ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"}, 204{ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"}, 205{ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"}, 206{ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"}, 207{ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"}, 208 209{0,NULL}, 210 }; 211 212 213#define NUM_SYS_STR_REASONS 127 214#define LEN_SYS_STR_REASON 32 215 216static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 217/* SYS_str_reasons is filled with copies of strerror() results at 218 * initialization. 219 * 'errno' values up to 127 should cover all usual errors, 220 * others will be displayed numerically by ERR_error_string. 221 * It is crucial that we have something for each reason code 222 * that occurs in ERR_str_reasons, or bogus reason strings 223 * will be returned for SYSerr(), which always gets an errno 224 * value and never one of those 'standard' reason codes. */ 225 226static void build_SYS_str_reasons() 227 { 228 /* Malloc cannot be used here, use static storage instead */ 229 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 230 int i; 231 232 CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH); 233 234 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) 235 { 236 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 237 238 str->error = (unsigned long)i; 239 if (str->string == NULL) 240 { 241 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 242 char *src = strerror(i); 243 if (src != NULL) 244 { 245 strncpy(*dest, src, sizeof *dest); 246 (*dest)[sizeof *dest - 1] = '\0'; 247 str->string = *dest; 248 } 249 } 250 if (str->string == NULL) 251 str->string = "unknown"; 252 } 253 254 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 255 * as required by ERR_load_strings. */ 256 257 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); 258 } 259#endif 260 261#define err_clear_data(p,i) \ 262 if (((p)->err_data[i] != NULL) && \ 263 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 264 { \ 265 Free((p)->err_data[i]); \ 266 (p)->err_data[i]=NULL; \ 267 } \ 268 (p)->err_data_flags[i]=0; 269 270static void ERR_STATE_free(ERR_STATE *s) 271 { 272 int i; 273 274 if(s == NULL) 275 return; 276 277 for (i=0; i<ERR_NUM_ERRORS; i++) 278 { 279 err_clear_data(s,i); 280 } 281 Free(s); 282 } 283 284void ERR_load_ERR_strings(void) 285 { 286 static int init=1; 287 288 if (init) 289 { 290 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 291 if (init == 0) 292 { 293 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 294 return; 295 } 296 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 297 298#ifndef NO_ERR 299 ERR_load_strings(0,ERR_str_libraries); 300 ERR_load_strings(0,ERR_str_reasons); 301 ERR_load_strings(ERR_LIB_SYS,ERR_str_functs); 302 build_SYS_str_reasons(); 303 ERR_load_strings(ERR_LIB_SYS,SYS_str_reasons); 304#endif 305 init=0; 306 } 307 } 308 309void ERR_load_strings(int lib, ERR_STRING_DATA *str) 310 { 311 if (error_hash == NULL) 312 { 313 CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH); 314 error_hash=lh_new(err_hash,err_cmp); 315 if (error_hash == NULL) 316 { 317 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); 318 return; 319 } 320 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); 321 322 ERR_load_ERR_strings(); 323 } 324 325 CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH); 326 while (str->error) 327 { 328 str->error|=ERR_PACK(lib,0,0); 329 lh_insert(error_hash,str); 330 str++; 331 } 332 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); 333 } 334 335void ERR_free_strings(void) 336 { 337 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 338 339 if (error_hash != NULL) 340 { 341 lh_free(error_hash); 342 error_hash=NULL; 343 } 344 345 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 346 } 347 348/********************************************************/ 349 350void ERR_put_error(int lib, int func, int reason, const char *file, 351 int line) 352 { 353 ERR_STATE *es; 354 355#ifdef _OSD_POSIX 356 /* In the BS2000-OSD POSIX subsystem, the compiler generates 357 * path names in the form "*POSIX(/etc/passwd)". 358 * This dirty hack strips them to something sensible. 359 * @@@ We shouldn't modify a const string, though. 360 */ 361 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) { 362 char *end; 363 364 /* Skip the "*POSIX(" prefix */ 365 file += sizeof("*POSIX(")-1; 366 end = &file[strlen(file)-1]; 367 if (*end == ')') 368 *end = '\0'; 369 /* Optional: use the basename of the path only. */ 370 if ((end = strrchr(file, '/')) != NULL) 371 file = &end[1]; 372 } 373#endif 374 es=ERR_get_state(); 375 376 es->top=(es->top+1)%ERR_NUM_ERRORS; 377 if (es->top == es->bottom) 378 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; 379 es->err_buffer[es->top]=ERR_PACK(lib,func,reason); 380 es->err_file[es->top]=file; 381 es->err_line[es->top]=line; 382 err_clear_data(es,es->top); 383 } 384 385void ERR_clear_error(void) 386 { 387 ERR_STATE *es; 388 389 es=ERR_get_state(); 390 391#if 0 392 /* hmm... is this needed */ 393 for (i=0; i<ERR_NUM_ERRORS; i++) 394 { 395 es->err_buffer[i]=0; 396 es->err_file[i]=NULL; 397 es->err_line[i]= -1; 398 err_clear_data(es,i); 399 } 400#endif 401 es->top=es->bottom=0; 402 } 403 404 405unsigned long ERR_get_error(void) 406 { return(get_error_values(1,NULL,NULL,NULL,NULL)); } 407 408unsigned long ERR_get_error_line(const char **file, 409 int *line) 410 { return(get_error_values(1,file,line,NULL,NULL)); } 411 412unsigned long ERR_get_error_line_data(const char **file, int *line, 413 const char **data, int *flags) 414 { return(get_error_values(1,file,line, 415 data,flags)); } 416 417unsigned long ERR_peek_error(void) 418 { return(get_error_values(0,NULL,NULL,NULL,NULL)); } 419 420unsigned long ERR_peek_error_line(const char **file, 421 int *line) 422 { return(get_error_values(0,file,line,NULL,NULL)); } 423 424unsigned long ERR_peek_error_line_data(const char **file, int *line, 425 const char **data, int *flags) 426 { return(get_error_values(0,file,line, 427 data,flags)); } 428 429static unsigned long get_error_values(int inc, const char **file, int *line, 430 const char **data, int *flags) 431 { 432 int i=0; 433 ERR_STATE *es; 434 unsigned long ret; 435 436 es=ERR_get_state(); 437 438 if (es->bottom == es->top) return(0); 439 i=(es->bottom+1)%ERR_NUM_ERRORS; 440 441 ret=es->err_buffer[i]; 442 if (inc) 443 { 444 es->bottom=i; 445 es->err_buffer[i]=0; 446 } 447 448 if ((file != NULL) && (line != NULL)) 449 { 450 if (es->err_file[i] == NULL) 451 { 452 *file="NA"; 453 if (line != NULL) *line=0; 454 } 455 else 456 { 457 *file=es->err_file[i]; 458 if (line != NULL) *line=es->err_line[i]; 459 } 460 } 461 462 if (data != NULL) 463 { 464 if (es->err_data[i] == NULL) 465 { 466 *data=""; 467 if (flags != NULL) *flags=0; 468 } 469 else 470 { 471 *data=es->err_data[i]; 472 if (flags != NULL) *flags=es->err_data_flags[i]; 473 } 474 } 475 return(ret); 476 } 477 478/* BAD for multi-threaded, uses a local buffer if ret == NULL */ 479char *ERR_error_string(unsigned long e, char *ret) 480 { 481 static char buf[256]; 482 const char *ls,*fs,*rs; 483 unsigned long l,f,r; 484 int i; 485 486 l=ERR_GET_LIB(e); 487 f=ERR_GET_FUNC(e); 488 r=ERR_GET_REASON(e); 489 490 ls=ERR_lib_error_string(e); 491 fs=ERR_func_error_string(e); 492 rs=ERR_reason_error_string(e); 493 494 if (ret == NULL) ret=buf; 495 496 sprintf(&(ret[0]),"error:%08lX:",e); 497 i=strlen(ret); 498 if (ls == NULL) 499 sprintf(&(ret[i]),":lib(%lu) ",l); 500 else sprintf(&(ret[i]),"%s",ls); 501 i=strlen(ret); 502 if (fs == NULL) 503 sprintf(&(ret[i]),":func(%lu) ",f); 504 else sprintf(&(ret[i]),":%s",fs); 505 i=strlen(ret); 506 if (rs == NULL) 507 sprintf(&(ret[i]),":reason(%lu)",r); 508 else sprintf(&(ret[i]),":%s",rs); 509 510 return(ret); 511 } 512 513LHASH *ERR_get_string_table(void) 514 { 515 return(error_hash); 516 } 517 518LHASH *ERR_get_err_state_table(void) 519 { 520 return(thread_hash); 521 } 522 523const char *ERR_lib_error_string(unsigned long e) 524 { 525 ERR_STRING_DATA d,*p=NULL; 526 unsigned long l; 527 528 l=ERR_GET_LIB(e); 529 530 CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH); 531 532 if (error_hash != NULL) 533 { 534 d.error=ERR_PACK(l,0,0); 535 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d); 536 } 537 538 CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH); 539 540 return((p == NULL)?NULL:p->string); 541 } 542 543const char *ERR_func_error_string(unsigned long e) 544 { 545 ERR_STRING_DATA d,*p=NULL; 546 unsigned long l,f; 547 548 l=ERR_GET_LIB(e); 549 f=ERR_GET_FUNC(e); 550 551 CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH); 552 553 if (error_hash != NULL) 554 { 555 d.error=ERR_PACK(l,f,0); 556 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d); 557 } 558 559 CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH); 560 561 return((p == NULL)?NULL:p->string); 562 } 563 564const char *ERR_reason_error_string(unsigned long e) 565 { 566 ERR_STRING_DATA d,*p=NULL; 567 unsigned long l,r; 568 569 l=ERR_GET_LIB(e); 570 r=ERR_GET_REASON(e); 571 572 CRYPTO_r_lock(CRYPTO_LOCK_ERR_HASH); 573 574 if (error_hash != NULL) 575 { 576 d.error=ERR_PACK(l,0,r); 577 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d); 578 if (p == NULL) 579 { 580 d.error=ERR_PACK(0,0,r); 581 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d); 582 } 583 } 584 585 CRYPTO_r_unlock(CRYPTO_LOCK_ERR_HASH); 586 587 return((p == NULL)?NULL:p->string); 588 } 589 590static unsigned long err_hash(ERR_STRING_DATA *a) 591 { 592 unsigned long ret,l; 593 594 l=a->error; 595 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 596 return(ret^ret%19*13); 597 } 598 599static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) 600 { 601 return((int)(a->error-b->error)); 602 } 603 604static unsigned long pid_hash(ERR_STATE *a) 605 { 606 return(a->pid*13); 607 } 608 609static int pid_cmp(ERR_STATE *a, ERR_STATE *b) 610 { 611 return((int)((long)a->pid - (long)b->pid)); 612 } 613 614void ERR_remove_state(unsigned long pid) 615 { 616 ERR_STATE *p,tmp; 617 618 if (thread_hash == NULL) 619 return; 620 if (pid == 0) 621 pid=(unsigned long)CRYPTO_thread_id(); 622 tmp.pid=pid; 623 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 624 p=(ERR_STATE *)lh_delete(thread_hash,&tmp); 625 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 626 627 if (p != NULL) ERR_STATE_free(p); 628 } 629 630ERR_STATE *ERR_get_state(void) 631 { 632 static ERR_STATE fallback; 633 ERR_STATE *ret=NULL,tmp,*tmpp; 634 int i; 635 unsigned long pid; 636 637 pid=(unsigned long)CRYPTO_thread_id(); 638 639 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 640 if (thread_hash == NULL) 641 { 642 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 643 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 644 if (thread_hash == NULL) 645 { 646 MemCheck_off(); 647 thread_hash=lh_new(pid_hash,pid_cmp); 648 MemCheck_on(); 649 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 650 if (thread_hash == NULL) return(&fallback); 651 } 652 else 653 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 654 } 655 else 656 { 657 tmp.pid=pid; 658 ret=(ERR_STATE *)lh_retrieve(thread_hash,&tmp); 659 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 660 } 661 662 /* ret == the error state, if NULL, make a new one */ 663 if (ret == NULL) 664 { 665 ret=(ERR_STATE *)Malloc(sizeof(ERR_STATE)); 666 if (ret == NULL) return(&fallback); 667 ret->pid=pid; 668 ret->top=0; 669 ret->bottom=0; 670 for (i=0; i<ERR_NUM_ERRORS; i++) 671 { 672 ret->err_data[i]=NULL; 673 ret->err_data_flags[i]=0; 674 } 675 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 676 tmpp=(ERR_STATE *)lh_insert(thread_hash,ret); 677 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 678 if (tmpp != NULL) /* old entry - should not happen */ 679 { 680 ERR_STATE_free(tmpp); 681 } 682 } 683 return(ret); 684 } 685 686int ERR_get_next_error_library(void) 687 { 688 static int value=ERR_LIB_USER; 689 690 return(value++); 691 } 692 693void ERR_set_error_data(char *data, int flags) 694 { 695 ERR_STATE *es; 696 int i; 697 698 es=ERR_get_state(); 699 700 i=es->top; 701 if (i == 0) 702 i=ERR_NUM_ERRORS-1; 703 704 es->err_data[i]=data; 705 es->err_data_flags[es->top]=flags; 706 } 707 708void ERR_add_error_data(int num, ...) 709 { 710 va_list args; 711 int i,n,s; 712 char *str,*p,*a; 713 714 s=64; 715 str=Malloc(s+1); 716 if (str == NULL) return; 717 str[0]='\0'; 718 719 va_start(args, num); 720 n=0; 721 for (i=0; i<num; i++) 722 { 723 a=va_arg(args, char*); 724 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 725 if (a != NULL) 726 { 727 n+=strlen(a); 728 if (n > s) 729 { 730 s=n+20; 731 p=Realloc(str,s+1); 732 if (p == NULL) 733 { 734 Free(str); 735 return; 736 } 737 else 738 str=p; 739 } 740 strcat(str,a); 741 } 742 } 743 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); 744 745 va_end(args); 746 } 747 748