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/bio.h> 120 #include <openssl/err.h> 121 122 123 static LHASH *error_hash=NULL; 124 static LHASH *thread_hash=NULL; 125 126 static unsigned long err_hash(ERR_STRING_DATA *a); 127 static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); 128 static unsigned long pid_hash(ERR_STATE *pid); 129 static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); 130 static unsigned long get_error_values(int inc,const char **file,int *line, 131 const char **data,int *flags); 132 static void ERR_STATE_free(ERR_STATE *s); 133 #ifndef NO_ERR 134 static 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_DSA,0,0) ,"dsa routines"}, 141 {ERR_PACK(ERR_LIB_DH,0,0) ,"Diffie-Hellman routines"}, 142 {ERR_PACK(ERR_LIB_EVP,0,0) ,"digital envelope routines"}, 143 {ERR_PACK(ERR_LIB_BUF,0,0) ,"memory buffer routines"}, 144 {ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"}, 145 {ERR_PACK(ERR_LIB_OBJ,0,0) ,"object identifier routines"}, 146 {ERR_PACK(ERR_LIB_PEM,0,0) ,"PEM routines"}, 147 {ERR_PACK(ERR_LIB_ASN1,0,0) ,"asn1 encoding routines"}, 148 {ERR_PACK(ERR_LIB_X509,0,0) ,"x509 certificate routines"}, 149 {ERR_PACK(ERR_LIB_CONF,0,0) ,"configuration file routines"}, 150 {ERR_PACK(ERR_LIB_METH,0,0) ,"X509 lookup 'method' routines"}, 151 {ERR_PACK(ERR_LIB_SSL,0,0) ,"SSL routines"}, 152 {ERR_PACK(ERR_LIB_RSAREF,0,0) ,"RSAref routines"}, 153 {ERR_PACK(ERR_LIB_PROXY,0,0) ,"Proxy routines"}, 154 {ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"}, 155 {ERR_PACK(ERR_LIB_PKCS7,0,0) ,"PKCS7 routines"}, 156 {ERR_PACK(ERR_LIB_X509V3,0,0) ,"X509 V3 routines"}, 157 {ERR_PACK(ERR_LIB_PKCS12,0,0) ,"PKCS12 routines"}, 158 {ERR_PACK(ERR_LIB_RAND,0,0) ,"random number generator"}, 159 {ERR_PACK(ERR_LIB_DSO,0,0) ,"DSO support routines"}, 160 {ERR_PACK(ERR_LIB_ENGINE,0,0) ,"engine routines"}, 161 {0,NULL}, 162 }; 163 164 static ERR_STRING_DATA ERR_str_functs[]= 165 { 166 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"}, 167 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"}, 168 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"}, 169 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"}, 170 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"}, 171 {ERR_PACK(0,SYS_F_BIND,0), "bind"}, 172 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"}, 173 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"}, 174 #ifdef WINDOWS 175 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"}, 176 #endif 177 {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"}, 178 {0,NULL}, 179 }; 180 181 static ERR_STRING_DATA ERR_str_reasons[]= 182 { 183 {ERR_R_FATAL ,"fatal"}, 184 {ERR_R_SYS_LIB ,"system lib"}, 185 {ERR_R_BN_LIB ,"BN lib"}, 186 {ERR_R_RSA_LIB ,"RSA lib"}, 187 {ERR_R_DH_LIB ,"DH lib"}, 188 {ERR_R_EVP_LIB ,"EVP lib"}, 189 {ERR_R_BUF_LIB ,"BUF lib"}, 190 {ERR_R_BIO_LIB ,"BIO lib"}, 191 {ERR_R_OBJ_LIB ,"OBJ lib"}, 192 {ERR_R_PEM_LIB ,"PEM lib"}, 193 {ERR_R_X509_LIB ,"X509 lib"}, 194 {ERR_R_METH_LIB ,"METH lib"}, 195 {ERR_R_ASN1_LIB ,"ASN1 lib"}, 196 {ERR_R_CONF_LIB ,"CONF lib"}, 197 {ERR_R_SSL_LIB ,"SSL lib"}, 198 {ERR_R_PROXY_LIB ,"PROXY lib"}, 199 {ERR_R_BIO_LIB ,"BIO lib"}, 200 {ERR_R_PKCS7_LIB ,"PKCS7 lib"}, 201 {ERR_R_PKCS12_LIB ,"PKCS12 lib"}, 202 {ERR_R_MALLOC_FAILURE ,"Malloc failure"}, 203 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"}, 204 {ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"}, 205 {ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"}, 206 {ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"}, 207 {ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"}, 208 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"}, 209 {ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"}, 210 {ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"}, 211 {ERR_R_DSO_LIB ,"DSO lib"}, 212 {ERR_R_ENGINE_LIB ,"ENGINE lib"}, 213 214 {0,NULL}, 215 }; 216 217 218 #define NUM_SYS_STR_REASONS 127 219 #define LEN_SYS_STR_REASON 32 220 221 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 222 /* SYS_str_reasons is filled with copies of strerror() results at 223 * initialization. 224 * 'errno' values up to 127 should cover all usual errors, 225 * others will be displayed numerically by ERR_error_string. 226 * It is crucial that we have something for each reason code 227 * that occurs in ERR_str_reasons, or bogus reason strings 228 * will be returned for SYSerr(), which always gets an errno 229 * value and never one of those 'standard' reason codes. */ 230 231 static void build_SYS_str_reasons() 232 { 233 /* OPENSSL_malloc cannot be used here, use static storage instead */ 234 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 235 int i; 236 237 CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH); 238 239 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) 240 { 241 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 242 243 str->error = (unsigned long)i; 244 if (str->string == NULL) 245 { 246 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 247 char *src = strerror(i); 248 if (src != NULL) 249 { 250 strncpy(*dest, src, sizeof *dest); 251 (*dest)[sizeof *dest - 1] = '\0'; 252 str->string = *dest; 253 } 254 } 255 if (str->string == NULL) 256 str->string = "unknown"; 257 } 258 259 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 260 * as required by ERR_load_strings. */ 261 262 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); 263 } 264 #endif 265 266 #define err_clear_data(p,i) \ 267 if (((p)->err_data[i] != NULL) && \ 268 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 269 { \ 270 OPENSSL_free((p)->err_data[i]); \ 271 (p)->err_data[i]=NULL; \ 272 } \ 273 (p)->err_data_flags[i]=0; 274 275 static void ERR_STATE_free(ERR_STATE *s) 276 { 277 int i; 278 279 if(s == NULL) 280 return; 281 282 for (i=0; i<ERR_NUM_ERRORS; i++) 283 { 284 err_clear_data(s,i); 285 } 286 OPENSSL_free(s); 287 } 288 289 void ERR_load_ERR_strings(void) 290 { 291 static int init=1; 292 293 if (init) 294 { 295 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 296 if (init == 0) 297 { 298 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 299 return; 300 } 301 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 302 303 #ifndef NO_ERR 304 ERR_load_strings(0,ERR_str_libraries); 305 ERR_load_strings(0,ERR_str_reasons); 306 ERR_load_strings(ERR_LIB_SYS,ERR_str_functs); 307 build_SYS_str_reasons(); 308 ERR_load_strings(ERR_LIB_SYS,SYS_str_reasons); 309 #endif 310 init=0; 311 } 312 } 313 314 void ERR_load_strings(int lib, ERR_STRING_DATA *str) 315 { 316 if (error_hash == NULL) 317 { 318 CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH); 319 error_hash=lh_new(err_hash,err_cmp); 320 if (error_hash == NULL) 321 { 322 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); 323 return; 324 } 325 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); 326 327 ERR_load_ERR_strings(); 328 } 329 330 CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH); 331 while (str->error) 332 { 333 str->error|=ERR_PACK(lib,0,0); 334 lh_insert(error_hash,str); 335 str++; 336 } 337 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); 338 } 339 340 void ERR_free_strings(void) 341 { 342 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 343 344 if (error_hash != NULL) 345 { 346 lh_free(error_hash); 347 error_hash=NULL; 348 } 349 350 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 351 } 352 353 /********************************************************/ 354 355 void ERR_put_error(int lib, int func, int reason, const char *file, 356 int line) 357 { 358 ERR_STATE *es; 359 360 #ifdef _OSD_POSIX 361 /* In the BS2000-OSD POSIX subsystem, the compiler generates 362 * path names in the form "*POSIX(/etc/passwd)". 363 * This dirty hack strips them to something sensible. 364 * @@@ We shouldn't modify a const string, though. 365 */ 366 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) { 367 char *end; 368 369 /* Skip the "*POSIX(" prefix */ 370 file += sizeof("*POSIX(")-1; 371 end = &file[strlen(file)-1]; 372 if (*end == ')') 373 *end = '\0'; 374 /* Optional: use the basename of the path only. */ 375 if ((end = strrchr(file, '/')) != NULL) 376 file = &end[1]; 377 } 378 #endif 379 es=ERR_get_state(); 380 381 es->top=(es->top+1)%ERR_NUM_ERRORS; 382 if (es->top == es->bottom) 383 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; 384 es->err_buffer[es->top]=ERR_PACK(lib,func,reason); 385 es->err_file[es->top]=file; 386 es->err_line[es->top]=line; 387 err_clear_data(es,es->top); 388 } 389 390 void ERR_clear_error(void) 391 { 392 int i; 393 ERR_STATE *es; 394 395 es=ERR_get_state(); 396 397 for (i=0; i<ERR_NUM_ERRORS; i++) 398 { 399 es->err_buffer[i]=0; 400 err_clear_data(es,i); 401 es->err_file[i]=NULL; 402 es->err_line[i]= -1; 403 } 404 es->top=es->bottom=0; 405 } 406 407 408 unsigned long ERR_get_error(void) 409 { return(get_error_values(1,NULL,NULL,NULL,NULL)); } 410 411 unsigned long ERR_get_error_line(const char **file, 412 int *line) 413 { return(get_error_values(1,file,line,NULL,NULL)); } 414 415 unsigned long ERR_get_error_line_data(const char **file, int *line, 416 const char **data, int *flags) 417 { return(get_error_values(1,file,line, 418 data,flags)); } 419 420 unsigned long ERR_peek_error(void) 421 { return(get_error_values(0,NULL,NULL,NULL,NULL)); } 422 423 unsigned long ERR_peek_error_line(const char **file, 424 int *line) 425 { return(get_error_values(0,file,line,NULL,NULL)); } 426 427 unsigned long ERR_peek_error_line_data(const char **file, int *line, 428 const char **data, int *flags) 429 { return(get_error_values(0,file,line, 430 data,flags)); } 431 432 static unsigned long get_error_values(int inc, const char **file, int *line, 433 const char **data, int *flags) 434 { 435 int i=0; 436 ERR_STATE *es; 437 unsigned long ret; 438 439 es=ERR_get_state(); 440 441 if (es->bottom == es->top) return(0); 442 i=(es->bottom+1)%ERR_NUM_ERRORS; 443 444 ret=es->err_buffer[i]; 445 if (inc) 446 { 447 es->bottom=i; 448 es->err_buffer[i]=0; 449 } 450 451 if ((file != NULL) && (line != NULL)) 452 { 453 if (es->err_file[i] == NULL) 454 { 455 *file="NA"; 456 if (line != NULL) *line=0; 457 } 458 else 459 { 460 *file=es->err_file[i]; 461 if (line != NULL) *line=es->err_line[i]; 462 } 463 } 464 465 if (data == NULL) 466 { 467 if (inc) 468 { 469 err_clear_data(es, i); 470 } 471 } 472 else 473 { 474 if (es->err_data[i] == NULL) 475 { 476 *data=""; 477 if (flags != NULL) *flags=0; 478 } 479 else 480 { 481 *data=es->err_data[i]; 482 if (flags != NULL) *flags=es->err_data_flags[i]; 483 } 484 } 485 return(ret); 486 } 487 488 void ERR_error_string_n(unsigned long e, char *buf, size_t len) 489 { 490 char lsbuf[64], fsbuf[64], rsbuf[64]; 491 const char *ls,*fs,*rs; 492 unsigned long l,f,r; 493 494 l=ERR_GET_LIB(e); 495 f=ERR_GET_FUNC(e); 496 r=ERR_GET_REASON(e); 497 498 ls=ERR_lib_error_string(e); 499 fs=ERR_func_error_string(e); 500 rs=ERR_reason_error_string(e); 501 502 if (ls == NULL) 503 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); 504 if (fs == NULL) 505 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); 506 if (rs == NULL) 507 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); 508 509 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf, 510 fs?fs:fsbuf, rs?rs:rsbuf); 511 if (strlen(buf) == len-1) 512 { 513 /* output may be truncated; make sure we always have 5 514 * colon-separated fields, i.e. 4 colons ... */ 515 #define NUM_COLONS 4 516 if (len > NUM_COLONS) /* ... if possible */ 517 { 518 int i; 519 char *s = buf; 520 521 for (i = 0; i < NUM_COLONS; i++) 522 { 523 char *colon = strchr(s, ':'); 524 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i) 525 { 526 /* set colon no. i at last possible position 527 * (buf[len-1] is the terminating 0)*/ 528 colon = &buf[len-1] - NUM_COLONS + i; 529 *colon = ':'; 530 } 531 s = colon + 1; 532 } 533 } 534 } 535 } 536 537 /* BAD for multi-threading: uses a local buffer if ret == NULL */ 538 /* ERR_error_string_n should be used instead for ret != NULL 539 * as ERR_error_string cannot know how large the buffer is */ 540 char *ERR_error_string(unsigned long e, char *ret) 541 { 542 static char buf[256]; 543 544 if (ret == NULL) ret=buf; 545 ERR_error_string_n(e, ret, 256); 546 547 return(ret); 548 } 549 550 LHASH *ERR_get_string_table(void) 551 { 552 return(error_hash); 553 } 554 555 /* not thread-safe */ 556 LHASH *ERR_get_err_state_table(void) 557 { 558 return(thread_hash); 559 } 560 561 const char *ERR_lib_error_string(unsigned long e) 562 { 563 ERR_STRING_DATA d,*p=NULL; 564 unsigned long l; 565 566 l=ERR_GET_LIB(e); 567 568 CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH); 569 570 if (error_hash != NULL) 571 { 572 d.error=ERR_PACK(l,0,0); 573 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d); 574 } 575 576 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); 577 578 return((p == NULL)?NULL:p->string); 579 } 580 581 const char *ERR_func_error_string(unsigned long e) 582 { 583 ERR_STRING_DATA d,*p=NULL; 584 unsigned long l,f; 585 586 l=ERR_GET_LIB(e); 587 f=ERR_GET_FUNC(e); 588 589 CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH); 590 591 if (error_hash != NULL) 592 { 593 d.error=ERR_PACK(l,f,0); 594 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d); 595 } 596 597 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); 598 599 return((p == NULL)?NULL:p->string); 600 } 601 602 const char *ERR_reason_error_string(unsigned long e) 603 { 604 ERR_STRING_DATA d,*p=NULL; 605 unsigned long l,r; 606 607 l=ERR_GET_LIB(e); 608 r=ERR_GET_REASON(e); 609 610 CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH); 611 612 if (error_hash != NULL) 613 { 614 d.error=ERR_PACK(l,0,r); 615 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d); 616 if (p == NULL) 617 { 618 d.error=ERR_PACK(0,0,r); 619 p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d); 620 } 621 } 622 623 CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); 624 625 return((p == NULL)?NULL:p->string); 626 } 627 628 static unsigned long err_hash(ERR_STRING_DATA *a) 629 { 630 unsigned long ret,l; 631 632 l=a->error; 633 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 634 return(ret^ret%19*13); 635 } 636 637 static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) 638 { 639 return((int)(a->error-b->error)); 640 } 641 642 static unsigned long pid_hash(ERR_STATE *a) 643 { 644 return(a->pid*13); 645 } 646 647 static int pid_cmp(ERR_STATE *a, ERR_STATE *b) 648 { 649 return((int)((long)a->pid - (long)b->pid)); 650 } 651 652 void ERR_remove_state(unsigned long pid) 653 { 654 ERR_STATE *p = NULL,tmp; 655 656 if (thread_hash == NULL) 657 return; 658 if (pid == 0) 659 pid=(unsigned long)CRYPTO_thread_id(); 660 tmp.pid=pid; 661 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 662 if (thread_hash) 663 { 664 p=(ERR_STATE *)lh_delete(thread_hash,&tmp); 665 if (lh_num_items(thread_hash) == 0) 666 { 667 /* make sure we don't leak memory */ 668 lh_free(thread_hash); 669 thread_hash = NULL; 670 } 671 } 672 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 673 674 if (p != NULL) ERR_STATE_free(p); 675 } 676 677 ERR_STATE *ERR_get_state(void) 678 { 679 static ERR_STATE fallback; 680 ERR_STATE *ret=NULL,tmp,*tmpp=NULL; 681 int thread_state_exists; 682 int i; 683 unsigned long pid; 684 685 pid=(unsigned long)CRYPTO_thread_id(); 686 687 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 688 if (thread_hash != NULL) 689 { 690 tmp.pid=pid; 691 ret=(ERR_STATE *)lh_retrieve(thread_hash,&tmp); 692 } 693 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 694 695 /* ret == the error state, if NULL, make a new one */ 696 if (ret == NULL) 697 { 698 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); 699 if (ret == NULL) return(&fallback); 700 ret->pid=pid; 701 ret->top=0; 702 ret->bottom=0; 703 for (i=0; i<ERR_NUM_ERRORS; i++) 704 { 705 ret->err_data[i]=NULL; 706 ret->err_data_flags[i]=0; 707 } 708 709 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 710 711 /* no entry yet in thread_hash for current thread - 712 * thus, it may have changed since we last looked at it */ 713 if (thread_hash == NULL) 714 thread_hash = lh_new(pid_hash, pid_cmp); 715 if (thread_hash == NULL) 716 thread_state_exists = 0; /* allocation error */ 717 else 718 { 719 tmpp=(ERR_STATE *)lh_insert(thread_hash,ret); 720 thread_state_exists = 1; 721 } 722 723 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 724 725 if (!thread_state_exists) 726 { 727 ERR_STATE_free(ret); /* could not insert it */ 728 return(&fallback); 729 } 730 731 if (tmpp != NULL) /* old entry - should not happen */ 732 { 733 ERR_STATE_free(tmpp); 734 } 735 } 736 return(ret); 737 } 738 739 int ERR_get_next_error_library(void) 740 { 741 static int value=ERR_LIB_USER; 742 743 return(value++); 744 } 745 746 void ERR_set_error_data(char *data, int flags) 747 { 748 ERR_STATE *es; 749 int i; 750 751 es=ERR_get_state(); 752 753 i=es->top; 754 if (i == 0) 755 i=ERR_NUM_ERRORS-1; 756 757 err_clear_data(es,i); 758 es->err_data[i]=data; 759 es->err_data_flags[i]=flags; 760 } 761 762 void ERR_add_error_data(int num, ...) 763 { 764 va_list args; 765 int i,n,s; 766 char *str,*p,*a; 767 768 s=80; 769 str=OPENSSL_malloc(s+1); 770 if (str == NULL) return; 771 str[0]='\0'; 772 773 va_start(args, num); 774 n=0; 775 for (i=0; i<num; i++) 776 { 777 a=va_arg(args, char*); 778 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 779 if (a != NULL) 780 { 781 n+=strlen(a); 782 if (n > s) 783 { 784 s=n+20; 785 p=OPENSSL_realloc(str,s+1); 786 if (p == NULL) 787 { 788 OPENSSL_free(str); 789 return; 790 } 791 else 792 str=p; 793 } 794 strcat(str,a); 795 } 796 } 797 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); 798 799 va_end(args); 800 } 801 802