1 /* crypto/err/err.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 112 #include <stdio.h> 113 #include <stdarg.h> 114 #include <string.h> 115 #include <openssl/lhash.h> 116 #include <openssl/crypto.h> 117 #include "cryptlib.h" 118 #include <openssl/buffer.h> 119 #include <openssl/bio.h> 120 #include <openssl/err.h> 121 122 static void err_load_strings(int lib, ERR_STRING_DATA *str); 123 124 static void ERR_STATE_free(ERR_STATE *s); 125 #ifndef OPENSSL_NO_ERR 126 static ERR_STRING_DATA ERR_str_libraries[]= 127 { 128 {ERR_PACK(ERR_LIB_NONE,0,0) ,"unknown library"}, 129 {ERR_PACK(ERR_LIB_SYS,0,0) ,"system library"}, 130 {ERR_PACK(ERR_LIB_BN,0,0) ,"bignum routines"}, 131 {ERR_PACK(ERR_LIB_RSA,0,0) ,"rsa routines"}, 132 {ERR_PACK(ERR_LIB_DH,0,0) ,"Diffie-Hellman routines"}, 133 {ERR_PACK(ERR_LIB_EVP,0,0) ,"digital envelope routines"}, 134 {ERR_PACK(ERR_LIB_BUF,0,0) ,"memory buffer routines"}, 135 {ERR_PACK(ERR_LIB_OBJ,0,0) ,"object identifier routines"}, 136 {ERR_PACK(ERR_LIB_PEM,0,0) ,"PEM routines"}, 137 {ERR_PACK(ERR_LIB_DSA,0,0) ,"dsa routines"}, 138 {ERR_PACK(ERR_LIB_X509,0,0) ,"x509 certificate routines"}, 139 {ERR_PACK(ERR_LIB_ASN1,0,0) ,"asn1 encoding routines"}, 140 {ERR_PACK(ERR_LIB_CONF,0,0) ,"configuration file routines"}, 141 {ERR_PACK(ERR_LIB_CRYPTO,0,0) ,"common libcrypto routines"}, 142 {ERR_PACK(ERR_LIB_EC,0,0) ,"elliptic curve routines"}, 143 {ERR_PACK(ERR_LIB_SSL,0,0) ,"SSL routines"}, 144 {ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"}, 145 {ERR_PACK(ERR_LIB_PKCS7,0,0) ,"PKCS7 routines"}, 146 {ERR_PACK(ERR_LIB_X509V3,0,0) ,"X509 V3 routines"}, 147 {ERR_PACK(ERR_LIB_PKCS12,0,0) ,"PKCS12 routines"}, 148 {ERR_PACK(ERR_LIB_RAND,0,0) ,"random number generator"}, 149 {ERR_PACK(ERR_LIB_DSO,0,0) ,"DSO support routines"}, 150 {ERR_PACK(ERR_LIB_ENGINE,0,0) ,"engine routines"}, 151 {ERR_PACK(ERR_LIB_OCSP,0,0) ,"OCSP routines"}, 152 {0,NULL}, 153 }; 154 155 static ERR_STRING_DATA ERR_str_functs[]= 156 { 157 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"}, 158 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"}, 159 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"}, 160 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"}, 161 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"}, 162 {ERR_PACK(0,SYS_F_BIND,0), "bind"}, 163 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"}, 164 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"}, 165 #ifdef OPENSSL_SYS_WINDOWS 166 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"}, 167 #endif 168 {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"}, 169 {ERR_PACK(0,SYS_F_FREAD,0), "fread"}, 170 {0,NULL}, 171 }; 172 173 static ERR_STRING_DATA ERR_str_reasons[]= 174 { 175 {ERR_R_SYS_LIB ,"system lib"}, 176 {ERR_R_BN_LIB ,"BN lib"}, 177 {ERR_R_RSA_LIB ,"RSA lib"}, 178 {ERR_R_DH_LIB ,"DH lib"}, 179 {ERR_R_EVP_LIB ,"EVP lib"}, 180 {ERR_R_BUF_LIB ,"BUF lib"}, 181 {ERR_R_OBJ_LIB ,"OBJ lib"}, 182 {ERR_R_PEM_LIB ,"PEM lib"}, 183 {ERR_R_DSA_LIB ,"DSA lib"}, 184 {ERR_R_X509_LIB ,"X509 lib"}, 185 {ERR_R_ASN1_LIB ,"ASN1 lib"}, 186 {ERR_R_CONF_LIB ,"CONF lib"}, 187 {ERR_R_CRYPTO_LIB ,"CRYPTO lib"}, 188 {ERR_R_EC_LIB ,"EC lib"}, 189 {ERR_R_SSL_LIB ,"SSL lib"}, 190 {ERR_R_BIO_LIB ,"BIO lib"}, 191 {ERR_R_PKCS7_LIB ,"PKCS7 lib"}, 192 {ERR_R_X509V3_LIB ,"X509V3 lib"}, 193 {ERR_R_PKCS12_LIB ,"PKCS12 lib"}, 194 {ERR_R_RAND_LIB ,"RAND lib"}, 195 {ERR_R_DSO_LIB ,"DSO lib"}, 196 {ERR_R_ENGINE_LIB ,"ENGINE lib"}, 197 {ERR_R_OCSP_LIB ,"OCSP lib"}, 198 199 {ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"}, 200 {ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"}, 201 {ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"}, 202 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"}, 203 {ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"}, 204 {ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"}, 205 206 {ERR_R_FATAL ,"fatal"}, 207 {ERR_R_MALLOC_FAILURE ,"malloc failure"}, 208 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"}, 209 {ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"}, 210 {ERR_R_INTERNAL_ERROR ,"internal error"}, 211 212 {0,NULL}, 213 }; 214 #endif 215 216 217 /* Define the predeclared (but externally opaque) "ERR_FNS" type */ 218 struct st_ERR_FNS 219 { 220 /* Works on the "error_hash" string table */ 221 LHASH *(*cb_err_get)(int create); 222 void (*cb_err_del)(void); 223 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 224 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 225 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 226 /* Works on the "thread_hash" error-state table */ 227 LHASH *(*cb_thread_get)(int create); 228 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 229 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 230 void (*cb_thread_del_item)(const ERR_STATE *); 231 /* Returns the next available error "library" numbers */ 232 int (*cb_get_next_lib)(void); 233 }; 234 235 /* Predeclarations of the "err_defaults" functions */ 236 static LHASH *int_err_get(int create); 237 static void int_err_del(void); 238 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 239 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 240 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 241 static LHASH *int_thread_get(int create); 242 static ERR_STATE *int_thread_get_item(const ERR_STATE *); 243 static ERR_STATE *int_thread_set_item(ERR_STATE *); 244 static void int_thread_del_item(const ERR_STATE *); 245 static int int_err_get_next_lib(void); 246 /* The static ERR_FNS table using these defaults functions */ 247 static const ERR_FNS err_defaults = 248 { 249 int_err_get, 250 int_err_del, 251 int_err_get_item, 252 int_err_set_item, 253 int_err_del_item, 254 int_thread_get, 255 int_thread_get_item, 256 int_thread_set_item, 257 int_thread_del_item, 258 int_err_get_next_lib 259 }; 260 261 /* The replacable table of ERR_FNS functions we use at run-time */ 262 static const ERR_FNS *err_fns = NULL; 263 264 /* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 265 #define ERRFN(a) err_fns->cb_##a 266 267 /* The internal state used by "err_defaults" - as such, the setting, reading, 268 * creating, and deleting of this data should only be permitted via the 269 * "err_defaults" functions. This way, a linked module can completely defer all 270 * ERR state operation (together with requisite locking) to the implementations 271 * and state in the loading application. */ 272 static LHASH *int_error_hash = NULL; 273 static LHASH *int_thread_hash = NULL; 274 static int int_err_library_number= ERR_LIB_USER; 275 276 /* Internal function that checks whether "err_fns" is set and if not, sets it to 277 * the defaults. */ 278 static void err_fns_check(void) 279 { 280 if (err_fns) return; 281 282 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 283 if (!err_fns) 284 err_fns = &err_defaults; 285 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 286 } 287 288 /* API functions to get or set the underlying ERR functions. */ 289 290 const ERR_FNS *ERR_get_implementation(void) 291 { 292 err_fns_check(); 293 return err_fns; 294 } 295 296 int ERR_set_implementation(const ERR_FNS *fns) 297 { 298 int ret = 0; 299 300 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 301 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 302 * an error is there?! */ 303 if (!err_fns) 304 { 305 err_fns = fns; 306 ret = 1; 307 } 308 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 309 return ret; 310 } 311 312 /* These are the callbacks provided to "lh_new()" when creating the LHASH tables 313 * internal to the "err_defaults" implementation. */ 314 315 /* static unsigned long err_hash(ERR_STRING_DATA *a); */ 316 static unsigned long err_hash(const void *a_void); 317 /* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */ 318 static int err_cmp(const void *a_void, const void *b_void); 319 /* static unsigned long pid_hash(ERR_STATE *pid); */ 320 static unsigned long pid_hash(const void *pid_void); 321 /* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */ 322 static int pid_cmp(const void *a_void,const void *pid_void); 323 static unsigned long get_error_values(int inc,int top,const char **file,int *line, 324 const char **data,int *flags); 325 326 /* The internal functions used in the "err_defaults" implementation */ 327 328 static LHASH *int_err_get(int create) 329 { 330 LHASH *ret = NULL; 331 332 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 333 if (!int_error_hash && create) 334 { 335 CRYPTO_push_info("int_err_get (err.c)"); 336 int_error_hash = lh_new(err_hash, err_cmp); 337 CRYPTO_pop_info(); 338 } 339 if (int_error_hash) 340 ret = int_error_hash; 341 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 342 343 return ret; 344 } 345 346 static void int_err_del(void) 347 { 348 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 349 if (int_error_hash) 350 { 351 lh_free(int_error_hash); 352 int_error_hash = NULL; 353 } 354 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 355 } 356 357 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) 358 { 359 ERR_STRING_DATA *p; 360 LHASH *hash; 361 362 err_fns_check(); 363 hash = ERRFN(err_get)(0); 364 if (!hash) 365 return NULL; 366 367 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 368 p = (ERR_STRING_DATA *)lh_retrieve(hash, d); 369 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 370 371 return p; 372 } 373 374 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) 375 { 376 ERR_STRING_DATA *p; 377 LHASH *hash; 378 379 err_fns_check(); 380 hash = ERRFN(err_get)(1); 381 if (!hash) 382 return NULL; 383 384 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 385 p = (ERR_STRING_DATA *)lh_insert(hash, d); 386 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 387 388 return p; 389 } 390 391 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) 392 { 393 ERR_STRING_DATA *p; 394 LHASH *hash; 395 396 err_fns_check(); 397 hash = ERRFN(err_get)(0); 398 if (!hash) 399 return NULL; 400 401 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 402 p = (ERR_STRING_DATA *)lh_delete(hash, d); 403 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 404 405 return p; 406 } 407 408 static LHASH *int_thread_get(int create) 409 { 410 LHASH *ret = NULL; 411 412 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 413 if (!int_thread_hash && create) 414 { 415 CRYPTO_push_info("int_thread_get (err.c)"); 416 int_thread_hash = lh_new(pid_hash, pid_cmp); 417 CRYPTO_pop_info(); 418 } 419 if (int_thread_hash) 420 ret = int_thread_hash; 421 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 422 return ret; 423 } 424 425 static ERR_STATE *int_thread_get_item(const ERR_STATE *d) 426 { 427 ERR_STATE *p; 428 LHASH *hash; 429 430 err_fns_check(); 431 hash = ERRFN(thread_get)(0); 432 if (!hash) 433 return NULL; 434 435 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 436 p = (ERR_STATE *)lh_retrieve(hash, d); 437 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 438 439 return p; 440 } 441 442 static ERR_STATE *int_thread_set_item(ERR_STATE *d) 443 { 444 ERR_STATE *p; 445 LHASH *hash; 446 447 err_fns_check(); 448 hash = ERRFN(thread_get)(1); 449 if (!hash) 450 return NULL; 451 452 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 453 p = (ERR_STATE *)lh_insert(hash, d); 454 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 455 456 return p; 457 } 458 459 static void int_thread_del_item(const ERR_STATE *d) 460 { 461 ERR_STATE *p; 462 LHASH *hash; 463 464 err_fns_check(); 465 hash = ERRFN(thread_get)(0); 466 if (!hash) 467 return; 468 469 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 470 p = (ERR_STATE *)lh_delete(hash, d); 471 /* make sure we don't leak memory */ 472 if (int_thread_hash && (lh_num_items(int_thread_hash) == 0)) 473 { 474 lh_free(int_thread_hash); 475 int_thread_hash = NULL; 476 } 477 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 478 479 if (p) 480 ERR_STATE_free(p); 481 } 482 483 static int int_err_get_next_lib(void) 484 { 485 int ret; 486 487 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 488 ret = int_err_library_number++; 489 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 490 491 return ret; 492 } 493 494 495 #ifndef OPENSSL_NO_ERR 496 #define NUM_SYS_STR_REASONS 127 497 #define LEN_SYS_STR_REASON 32 498 499 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 500 /* SYS_str_reasons is filled with copies of strerror() results at 501 * initialization. 502 * 'errno' values up to 127 should cover all usual errors, 503 * others will be displayed numerically by ERR_error_string. 504 * It is crucial that we have something for each reason code 505 * that occurs in ERR_str_reasons, or bogus reason strings 506 * will be returned for SYSerr(), which always gets an errno 507 * value and never one of those 'standard' reason codes. */ 508 509 static void build_SYS_str_reasons() 510 { 511 /* OPENSSL_malloc cannot be used here, use static storage instead */ 512 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 513 int i; 514 static int init = 1; 515 516 if (!init) return; 517 518 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 519 520 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) 521 { 522 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 523 524 str->error = (unsigned long)i; 525 if (str->string == NULL) 526 { 527 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 528 char *src = strerror(i); 529 if (src != NULL) 530 { 531 strncpy(*dest, src, sizeof *dest); 532 (*dest)[sizeof *dest - 1] = '\0'; 533 str->string = *dest; 534 } 535 } 536 if (str->string == NULL) 537 str->string = "unknown"; 538 } 539 540 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 541 * as required by ERR_load_strings. */ 542 543 init = 0; 544 545 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 546 } 547 #endif 548 549 #define err_clear_data(p,i) \ 550 if (((p)->err_data[i] != NULL) && \ 551 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 552 { \ 553 OPENSSL_free((p)->err_data[i]); \ 554 (p)->err_data[i]=NULL; \ 555 } \ 556 (p)->err_data_flags[i]=0; 557 558 static void ERR_STATE_free(ERR_STATE *s) 559 { 560 int i; 561 562 if (s == NULL) 563 return; 564 565 for (i=0; i<ERR_NUM_ERRORS; i++) 566 { 567 err_clear_data(s,i); 568 } 569 OPENSSL_free(s); 570 } 571 572 void ERR_load_ERR_strings(void) 573 { 574 err_fns_check(); 575 #ifndef OPENSSL_NO_ERR 576 err_load_strings(0,ERR_str_libraries); 577 err_load_strings(0,ERR_str_reasons); 578 err_load_strings(ERR_LIB_SYS,ERR_str_functs); 579 build_SYS_str_reasons(); 580 err_load_strings(ERR_LIB_SYS,SYS_str_reasons); 581 #endif 582 } 583 584 static void err_load_strings(int lib, ERR_STRING_DATA *str) 585 { 586 while (str->error) 587 { 588 str->error|=ERR_PACK(lib,0,0); 589 ERRFN(err_set_item)(str); 590 str++; 591 } 592 } 593 594 void ERR_load_strings(int lib, ERR_STRING_DATA *str) 595 { 596 ERR_load_ERR_strings(); 597 err_load_strings(lib, str); 598 } 599 600 void ERR_unload_strings(int lib, ERR_STRING_DATA *str) 601 { 602 while (str->error) 603 { 604 str->error|=ERR_PACK(lib,0,0); 605 ERRFN(err_del_item)(str); 606 str++; 607 } 608 } 609 610 void ERR_free_strings(void) 611 { 612 err_fns_check(); 613 ERRFN(err_del)(); 614 } 615 616 /********************************************************/ 617 618 void ERR_put_error(int lib, int func, int reason, const char *file, 619 int line) 620 { 621 ERR_STATE *es; 622 623 #ifdef _OSD_POSIX 624 /* In the BS2000-OSD POSIX subsystem, the compiler generates 625 * path names in the form "*POSIX(/etc/passwd)". 626 * This dirty hack strips them to something sensible. 627 * @@@ We shouldn't modify a const string, though. 628 */ 629 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) { 630 char *end; 631 632 /* Skip the "*POSIX(" prefix */ 633 file += sizeof("*POSIX(")-1; 634 end = &file[strlen(file)-1]; 635 if (*end == ')') 636 *end = '\0'; 637 /* Optional: use the basename of the path only. */ 638 if ((end = strrchr(file, '/')) != NULL) 639 file = &end[1]; 640 } 641 #endif 642 es=ERR_get_state(); 643 644 es->top=(es->top+1)%ERR_NUM_ERRORS; 645 if (es->top == es->bottom) 646 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; 647 es->err_buffer[es->top]=ERR_PACK(lib,func,reason); 648 es->err_file[es->top]=file; 649 es->err_line[es->top]=line; 650 err_clear_data(es,es->top); 651 } 652 653 void ERR_clear_error(void) 654 { 655 int i; 656 ERR_STATE *es; 657 658 es=ERR_get_state(); 659 660 for (i=0; i<ERR_NUM_ERRORS; i++) 661 { 662 es->err_buffer[i]=0; 663 err_clear_data(es,i); 664 es->err_file[i]=NULL; 665 es->err_line[i]= -1; 666 } 667 es->top=es->bottom=0; 668 } 669 670 671 unsigned long ERR_get_error(void) 672 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); } 673 674 unsigned long ERR_get_error_line(const char **file, 675 int *line) 676 { return(get_error_values(1,0,file,line,NULL,NULL)); } 677 678 unsigned long ERR_get_error_line_data(const char **file, int *line, 679 const char **data, int *flags) 680 { return(get_error_values(1,0,file,line,data,flags)); } 681 682 683 unsigned long ERR_peek_error(void) 684 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); } 685 686 unsigned long ERR_peek_error_line(const char **file, int *line) 687 { return(get_error_values(0,0,file,line,NULL,NULL)); } 688 689 unsigned long ERR_peek_error_line_data(const char **file, int *line, 690 const char **data, int *flags) 691 { return(get_error_values(0,0,file,line,data,flags)); } 692 693 694 unsigned long ERR_peek_last_error(void) 695 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); } 696 697 unsigned long ERR_peek_last_error_line(const char **file, int *line) 698 { return(get_error_values(0,1,file,line,NULL,NULL)); } 699 700 unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 701 const char **data, int *flags) 702 { return(get_error_values(0,1,file,line,data,flags)); } 703 704 705 static unsigned long get_error_values(int inc, int top, const char **file, int *line, 706 const char **data, int *flags) 707 { 708 int i=0; 709 ERR_STATE *es; 710 unsigned long ret; 711 712 es=ERR_get_state(); 713 714 if (inc && top) 715 { 716 if (file) *file = ""; 717 if (line) *line = 0; 718 if (data) *data = ""; 719 if (flags) *flags = 0; 720 721 return ERR_R_INTERNAL_ERROR; 722 } 723 724 if (es->bottom == es->top) return 0; 725 if (top) 726 i=es->top; /* last error */ 727 else 728 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */ 729 730 ret=es->err_buffer[i]; 731 if (inc) 732 { 733 es->bottom=i; 734 es->err_buffer[i]=0; 735 } 736 737 if ((file != NULL) && (line != NULL)) 738 { 739 if (es->err_file[i] == NULL) 740 { 741 *file="NA"; 742 if (line != NULL) *line=0; 743 } 744 else 745 { 746 *file=es->err_file[i]; 747 if (line != NULL) *line=es->err_line[i]; 748 } 749 } 750 751 if (data == NULL) 752 { 753 if (inc) 754 { 755 err_clear_data(es, i); 756 } 757 } 758 else 759 { 760 if (es->err_data[i] == NULL) 761 { 762 *data=""; 763 if (flags != NULL) *flags=0; 764 } 765 else 766 { 767 *data=es->err_data[i]; 768 if (flags != NULL) *flags=es->err_data_flags[i]; 769 } 770 } 771 return ret; 772 } 773 774 void ERR_error_string_n(unsigned long e, char *buf, size_t len) 775 { 776 char lsbuf[64], fsbuf[64], rsbuf[64]; 777 const char *ls,*fs,*rs; 778 unsigned long l,f,r; 779 780 l=ERR_GET_LIB(e); 781 f=ERR_GET_FUNC(e); 782 r=ERR_GET_REASON(e); 783 784 ls=ERR_lib_error_string(e); 785 fs=ERR_func_error_string(e); 786 rs=ERR_reason_error_string(e); 787 788 if (ls == NULL) 789 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); 790 if (fs == NULL) 791 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); 792 if (rs == NULL) 793 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); 794 795 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf, 796 fs?fs:fsbuf, rs?rs:rsbuf); 797 if (strlen(buf) == len-1) 798 { 799 /* output may be truncated; make sure we always have 5 800 * colon-separated fields, i.e. 4 colons ... */ 801 #define NUM_COLONS 4 802 if (len > NUM_COLONS) /* ... if possible */ 803 { 804 int i; 805 char *s = buf; 806 807 for (i = 0; i < NUM_COLONS; i++) 808 { 809 char *colon = strchr(s, ':'); 810 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i) 811 { 812 /* set colon no. i at last possible position 813 * (buf[len-1] is the terminating 0)*/ 814 colon = &buf[len-1] - NUM_COLONS + i; 815 *colon = ':'; 816 } 817 s = colon + 1; 818 } 819 } 820 } 821 } 822 823 /* BAD for multi-threading: uses a local buffer if ret == NULL */ 824 /* ERR_error_string_n should be used instead for ret != NULL 825 * as ERR_error_string cannot know how large the buffer is */ 826 char *ERR_error_string(unsigned long e, char *ret) 827 { 828 static char buf[256]; 829 830 if (ret == NULL) ret=buf; 831 ERR_error_string_n(e, ret, 256); 832 833 return ret; 834 } 835 836 LHASH *ERR_get_string_table(void) 837 { 838 err_fns_check(); 839 return ERRFN(err_get)(0); 840 } 841 842 LHASH *ERR_get_err_state_table(void) 843 { 844 err_fns_check(); 845 return ERRFN(thread_get)(0); 846 } 847 848 const char *ERR_lib_error_string(unsigned long e) 849 { 850 ERR_STRING_DATA d,*p; 851 unsigned long l; 852 853 err_fns_check(); 854 l=ERR_GET_LIB(e); 855 d.error=ERR_PACK(l,0,0); 856 p=ERRFN(err_get_item)(&d); 857 return((p == NULL)?NULL:p->string); 858 } 859 860 const char *ERR_func_error_string(unsigned long e) 861 { 862 ERR_STRING_DATA d,*p; 863 unsigned long l,f; 864 865 err_fns_check(); 866 l=ERR_GET_LIB(e); 867 f=ERR_GET_FUNC(e); 868 d.error=ERR_PACK(l,f,0); 869 p=ERRFN(err_get_item)(&d); 870 return((p == NULL)?NULL:p->string); 871 } 872 873 const char *ERR_reason_error_string(unsigned long e) 874 { 875 ERR_STRING_DATA d,*p=NULL; 876 unsigned long l,r; 877 878 err_fns_check(); 879 l=ERR_GET_LIB(e); 880 r=ERR_GET_REASON(e); 881 d.error=ERR_PACK(l,0,r); 882 p=ERRFN(err_get_item)(&d); 883 if (!p) 884 { 885 d.error=ERR_PACK(0,0,r); 886 p=ERRFN(err_get_item)(&d); 887 } 888 return((p == NULL)?NULL:p->string); 889 } 890 891 /* static unsigned long err_hash(ERR_STRING_DATA *a) */ 892 static unsigned long err_hash(const void *a_void) 893 { 894 unsigned long ret,l; 895 896 l=((ERR_STRING_DATA *)a_void)->error; 897 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 898 return(ret^ret%19*13); 899 } 900 901 /* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */ 902 static int err_cmp(const void *a_void, const void *b_void) 903 { 904 return((int)(((ERR_STRING_DATA *)a_void)->error - 905 ((ERR_STRING_DATA *)b_void)->error)); 906 } 907 908 /* static unsigned long pid_hash(ERR_STATE *a) */ 909 static unsigned long pid_hash(const void *a_void) 910 { 911 return(((ERR_STATE *)a_void)->pid*13); 912 } 913 914 /* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */ 915 static int pid_cmp(const void *a_void, const void *b_void) 916 { 917 return((int)((long)((ERR_STATE *)a_void)->pid - 918 (long)((ERR_STATE *)b_void)->pid)); 919 } 920 921 void ERR_remove_state(unsigned long pid) 922 { 923 ERR_STATE tmp; 924 925 err_fns_check(); 926 if (pid == 0) 927 pid=(unsigned long)CRYPTO_thread_id(); 928 tmp.pid=pid; 929 /* thread_del_item automatically destroys the LHASH if the number of 930 * items reaches zero. */ 931 ERRFN(thread_del_item)(&tmp); 932 } 933 934 ERR_STATE *ERR_get_state(void) 935 { 936 static ERR_STATE fallback; 937 ERR_STATE *ret,tmp,*tmpp=NULL; 938 int i; 939 unsigned long pid; 940 941 err_fns_check(); 942 pid=(unsigned long)CRYPTO_thread_id(); 943 tmp.pid=pid; 944 ret=ERRFN(thread_get_item)(&tmp); 945 946 /* ret == the error state, if NULL, make a new one */ 947 if (ret == NULL) 948 { 949 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); 950 if (ret == NULL) return(&fallback); 951 ret->pid=pid; 952 ret->top=0; 953 ret->bottom=0; 954 for (i=0; i<ERR_NUM_ERRORS; i++) 955 { 956 ret->err_data[i]=NULL; 957 ret->err_data_flags[i]=0; 958 } 959 tmpp = ERRFN(thread_set_item)(ret); 960 /* To check if insertion failed, do a get. */ 961 if (ERRFN(thread_get_item)(ret) != ret) 962 { 963 ERR_STATE_free(ret); /* could not insert it */ 964 return(&fallback); 965 } 966 /* If a race occured in this function and we came second, tmpp 967 * is the first one that we just replaced. */ 968 if (tmpp) 969 ERR_STATE_free(tmpp); 970 } 971 return ret; 972 } 973 974 int ERR_get_next_error_library(void) 975 { 976 err_fns_check(); 977 return ERRFN(get_next_lib)(); 978 } 979 980 void ERR_set_error_data(char *data, int flags) 981 { 982 ERR_STATE *es; 983 int i; 984 985 es=ERR_get_state(); 986 987 i=es->top; 988 if (i == 0) 989 i=ERR_NUM_ERRORS-1; 990 991 err_clear_data(es,i); 992 es->err_data[i]=data; 993 es->err_data_flags[i]=flags; 994 } 995 996 void ERR_add_error_data(int num, ...) 997 { 998 va_list args; 999 int i,n,s; 1000 char *str,*p,*a; 1001 1002 s=80; 1003 str=OPENSSL_malloc(s+1); 1004 if (str == NULL) return; 1005 str[0]='\0'; 1006 1007 va_start(args, num); 1008 n=0; 1009 for (i=0; i<num; i++) 1010 { 1011 a=va_arg(args, char*); 1012 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 1013 if (a != NULL) 1014 { 1015 n+=strlen(a); 1016 if (n > s) 1017 { 1018 s=n+20; 1019 p=OPENSSL_realloc(str,s+1); 1020 if (p == NULL) 1021 { 1022 OPENSSL_free(str); 1023 goto err; 1024 } 1025 else 1026 str=p; 1027 } 1028 strlcat(str,a,s+1); 1029 } 1030 } 1031 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); 1032 1033 err: 1034 va_end(args); 1035 } 1036