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 void (*cb_thread_release)(LHASH **hash); 229 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 230 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 231 void (*cb_thread_del_item)(const ERR_STATE *); 232 /* Returns the next available error "library" numbers */ 233 int (*cb_get_next_lib)(void); 234 }; 235 236 /* Predeclarations of the "err_defaults" functions */ 237 static LHASH *int_err_get(int create); 238 static void int_err_del(void); 239 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 240 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 241 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 242 static LHASH *int_thread_get(int create); 243 static void int_thread_release(LHASH **hash); 244 static ERR_STATE *int_thread_get_item(const ERR_STATE *); 245 static ERR_STATE *int_thread_set_item(ERR_STATE *); 246 static void int_thread_del_item(const ERR_STATE *); 247 static int int_err_get_next_lib(void); 248 /* The static ERR_FNS table using these defaults functions */ 249 static const ERR_FNS err_defaults = 250 { 251 int_err_get, 252 int_err_del, 253 int_err_get_item, 254 int_err_set_item, 255 int_err_del_item, 256 int_thread_get, 257 int_thread_release, 258 int_thread_get_item, 259 int_thread_set_item, 260 int_thread_del_item, 261 int_err_get_next_lib 262 }; 263 264 /* The replacable table of ERR_FNS functions we use at run-time */ 265 static const ERR_FNS *err_fns = NULL; 266 267 /* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 268 #define ERRFN(a) err_fns->cb_##a 269 270 /* The internal state used by "err_defaults" - as such, the setting, reading, 271 * creating, and deleting of this data should only be permitted via the 272 * "err_defaults" functions. This way, a linked module can completely defer all 273 * ERR state operation (together with requisite locking) to the implementations 274 * and state in the loading application. */ 275 static LHASH *int_error_hash = NULL; 276 static LHASH *int_thread_hash = NULL; 277 static int int_thread_hash_references = 0; 278 static int int_err_library_number= ERR_LIB_USER; 279 280 /* Internal function that checks whether "err_fns" is set and if not, sets it to 281 * the defaults. */ 282 static void err_fns_check(void) 283 { 284 if (err_fns) return; 285 286 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 287 if (!err_fns) 288 err_fns = &err_defaults; 289 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 290 } 291 292 /* API functions to get or set the underlying ERR functions. */ 293 294 const ERR_FNS *ERR_get_implementation(void) 295 { 296 err_fns_check(); 297 return err_fns; 298 } 299 300 int ERR_set_implementation(const ERR_FNS *fns) 301 { 302 int ret = 0; 303 304 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 305 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 306 * an error is there?! */ 307 if (!err_fns) 308 { 309 err_fns = fns; 310 ret = 1; 311 } 312 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 313 return ret; 314 } 315 316 /* These are the callbacks provided to "lh_new()" when creating the LHASH tables 317 * internal to the "err_defaults" implementation. */ 318 319 /* static unsigned long err_hash(ERR_STRING_DATA *a); */ 320 static unsigned long err_hash(const void *a_void); 321 /* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */ 322 static int err_cmp(const void *a_void, const void *b_void); 323 /* static unsigned long pid_hash(ERR_STATE *pid); */ 324 static unsigned long pid_hash(const void *pid_void); 325 /* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */ 326 static int pid_cmp(const void *a_void,const void *pid_void); 327 static unsigned long get_error_values(int inc,int top,const char **file,int *line, 328 const char **data,int *flags); 329 330 /* The internal functions used in the "err_defaults" implementation */ 331 332 static LHASH *int_err_get(int create) 333 { 334 LHASH *ret = NULL; 335 336 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 337 if (!int_error_hash && create) 338 { 339 CRYPTO_push_info("int_err_get (err.c)"); 340 int_error_hash = lh_new(err_hash, err_cmp); 341 CRYPTO_pop_info(); 342 } 343 if (int_error_hash) 344 ret = int_error_hash; 345 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 346 347 return ret; 348 } 349 350 static void int_err_del(void) 351 { 352 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 353 if (int_error_hash) 354 { 355 lh_free(int_error_hash); 356 int_error_hash = NULL; 357 } 358 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 359 } 360 361 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) 362 { 363 ERR_STRING_DATA *p; 364 LHASH *hash; 365 366 err_fns_check(); 367 hash = ERRFN(err_get)(0); 368 if (!hash) 369 return NULL; 370 371 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 372 p = (ERR_STRING_DATA *)lh_retrieve(hash, d); 373 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 374 375 return p; 376 } 377 378 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) 379 { 380 ERR_STRING_DATA *p; 381 LHASH *hash; 382 383 err_fns_check(); 384 hash = ERRFN(err_get)(1); 385 if (!hash) 386 return NULL; 387 388 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 389 p = (ERR_STRING_DATA *)lh_insert(hash, d); 390 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 391 392 return p; 393 } 394 395 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) 396 { 397 ERR_STRING_DATA *p; 398 LHASH *hash; 399 400 err_fns_check(); 401 hash = ERRFN(err_get)(0); 402 if (!hash) 403 return NULL; 404 405 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 406 p = (ERR_STRING_DATA *)lh_delete(hash, d); 407 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 408 409 return p; 410 } 411 412 static LHASH *int_thread_get(int create) 413 { 414 LHASH *ret = NULL; 415 416 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 417 if (!int_thread_hash && create) 418 { 419 CRYPTO_push_info("int_thread_get (err.c)"); 420 int_thread_hash = lh_new(pid_hash, pid_cmp); 421 CRYPTO_pop_info(); 422 } 423 if (int_thread_hash) 424 { 425 int_thread_hash_references++; 426 ret = int_thread_hash; 427 } 428 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 429 return ret; 430 } 431 432 static void int_thread_release(LHASH **hash) 433 { 434 int i; 435 436 if (hash == NULL || *hash == NULL) 437 return; 438 439 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 440 441 #ifdef REF_PRINT 442 fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR"); 443 #endif 444 if (i > 0) return; 445 #ifdef REF_CHECK 446 if (i < 0) 447 { 448 fprintf(stderr,"int_thread_release, bad reference count\n"); 449 abort(); /* ok */ 450 } 451 #endif 452 *hash = NULL; 453 } 454 455 static ERR_STATE *int_thread_get_item(const ERR_STATE *d) 456 { 457 ERR_STATE *p; 458 LHASH *hash; 459 460 err_fns_check(); 461 hash = ERRFN(thread_get)(0); 462 if (!hash) 463 return NULL; 464 465 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 466 p = (ERR_STATE *)lh_retrieve(hash, d); 467 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 468 469 ERRFN(thread_release)(&hash); 470 return p; 471 } 472 473 static ERR_STATE *int_thread_set_item(ERR_STATE *d) 474 { 475 ERR_STATE *p; 476 LHASH *hash; 477 478 err_fns_check(); 479 hash = ERRFN(thread_get)(1); 480 if (!hash) 481 return NULL; 482 483 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 484 p = (ERR_STATE *)lh_insert(hash, d); 485 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 486 487 ERRFN(thread_release)(&hash); 488 return p; 489 } 490 491 static void int_thread_del_item(const ERR_STATE *d) 492 { 493 ERR_STATE *p; 494 LHASH *hash; 495 496 err_fns_check(); 497 hash = ERRFN(thread_get)(0); 498 if (!hash) 499 return; 500 501 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 502 p = (ERR_STATE *)lh_delete(hash, d); 503 /* make sure we don't leak memory */ 504 if (int_thread_hash_references == 1 505 && int_thread_hash && (lh_num_items(int_thread_hash) == 0)) 506 { 507 lh_free(int_thread_hash); 508 int_thread_hash = NULL; 509 } 510 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 511 512 ERRFN(thread_release)(&hash); 513 if (p) 514 ERR_STATE_free(p); 515 } 516 517 static int int_err_get_next_lib(void) 518 { 519 int ret; 520 521 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 522 ret = int_err_library_number++; 523 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 524 525 return ret; 526 } 527 528 529 #ifndef OPENSSL_NO_ERR 530 #define NUM_SYS_STR_REASONS 127 531 #define LEN_SYS_STR_REASON 32 532 533 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 534 /* SYS_str_reasons is filled with copies of strerror() results at 535 * initialization. 536 * 'errno' values up to 127 should cover all usual errors, 537 * others will be displayed numerically by ERR_error_string. 538 * It is crucial that we have something for each reason code 539 * that occurs in ERR_str_reasons, or bogus reason strings 540 * will be returned for SYSerr(), which always gets an errno 541 * value and never one of those 'standard' reason codes. */ 542 543 static void build_SYS_str_reasons() 544 { 545 /* OPENSSL_malloc cannot be used here, use static storage instead */ 546 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 547 int i; 548 static int init = 1; 549 550 if (!init) return; 551 552 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 553 554 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) 555 { 556 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 557 558 str->error = (unsigned long)i; 559 if (str->string == NULL) 560 { 561 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 562 char *src = strerror(i); 563 if (src != NULL) 564 { 565 strncpy(*dest, src, sizeof *dest); 566 (*dest)[sizeof *dest - 1] = '\0'; 567 str->string = *dest; 568 } 569 } 570 if (str->string == NULL) 571 str->string = "unknown"; 572 } 573 574 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 575 * as required by ERR_load_strings. */ 576 577 init = 0; 578 579 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 580 } 581 #endif 582 583 #define err_clear_data(p,i) \ 584 if (((p)->err_data[i] != NULL) && \ 585 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 586 { \ 587 OPENSSL_free((p)->err_data[i]); \ 588 (p)->err_data[i]=NULL; \ 589 } \ 590 (p)->err_data_flags[i]=0; 591 592 static void ERR_STATE_free(ERR_STATE *s) 593 { 594 int i; 595 596 if (s == NULL) 597 return; 598 599 for (i=0; i<ERR_NUM_ERRORS; i++) 600 { 601 err_clear_data(s,i); 602 } 603 OPENSSL_free(s); 604 } 605 606 void ERR_load_ERR_strings(void) 607 { 608 err_fns_check(); 609 #ifndef OPENSSL_NO_ERR 610 err_load_strings(0,ERR_str_libraries); 611 err_load_strings(0,ERR_str_reasons); 612 err_load_strings(ERR_LIB_SYS,ERR_str_functs); 613 build_SYS_str_reasons(); 614 err_load_strings(ERR_LIB_SYS,SYS_str_reasons); 615 #endif 616 } 617 618 static void err_load_strings(int lib, ERR_STRING_DATA *str) 619 { 620 while (str->error) 621 { 622 str->error|=ERR_PACK(lib,0,0); 623 ERRFN(err_set_item)(str); 624 str++; 625 } 626 } 627 628 void ERR_load_strings(int lib, ERR_STRING_DATA *str) 629 { 630 ERR_load_ERR_strings(); 631 err_load_strings(lib, str); 632 } 633 634 void ERR_unload_strings(int lib, ERR_STRING_DATA *str) 635 { 636 while (str->error) 637 { 638 str->error|=ERR_PACK(lib,0,0); 639 ERRFN(err_del_item)(str); 640 str++; 641 } 642 } 643 644 void ERR_free_strings(void) 645 { 646 err_fns_check(); 647 ERRFN(err_del)(); 648 } 649 650 /********************************************************/ 651 652 void ERR_put_error(int lib, int func, int reason, const char *file, 653 int line) 654 { 655 ERR_STATE *es; 656 657 #ifdef _OSD_POSIX 658 /* In the BS2000-OSD POSIX subsystem, the compiler generates 659 * path names in the form "*POSIX(/etc/passwd)". 660 * This dirty hack strips them to something sensible. 661 * @@@ We shouldn't modify a const string, though. 662 */ 663 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) { 664 char *end; 665 666 /* Skip the "*POSIX(" prefix */ 667 file += sizeof("*POSIX(")-1; 668 end = &file[strlen(file)-1]; 669 if (*end == ')') 670 *end = '\0'; 671 /* Optional: use the basename of the path only. */ 672 if ((end = strrchr(file, '/')) != NULL) 673 file = &end[1]; 674 } 675 #endif 676 es=ERR_get_state(); 677 678 es->top=(es->top+1)%ERR_NUM_ERRORS; 679 if (es->top == es->bottom) 680 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; 681 es->err_buffer[es->top]=ERR_PACK(lib,func,reason); 682 es->err_file[es->top]=file; 683 es->err_line[es->top]=line; 684 err_clear_data(es,es->top); 685 } 686 687 void ERR_clear_error(void) 688 { 689 int i; 690 ERR_STATE *es; 691 692 es=ERR_get_state(); 693 694 for (i=0; i<ERR_NUM_ERRORS; i++) 695 { 696 es->err_buffer[i]=0; 697 err_clear_data(es,i); 698 es->err_file[i]=NULL; 699 es->err_line[i]= -1; 700 } 701 es->top=es->bottom=0; 702 } 703 704 705 unsigned long ERR_get_error(void) 706 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); } 707 708 unsigned long ERR_get_error_line(const char **file, 709 int *line) 710 { return(get_error_values(1,0,file,line,NULL,NULL)); } 711 712 unsigned long ERR_get_error_line_data(const char **file, int *line, 713 const char **data, int *flags) 714 { return(get_error_values(1,0,file,line,data,flags)); } 715 716 717 unsigned long ERR_peek_error(void) 718 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); } 719 720 unsigned long ERR_peek_error_line(const char **file, int *line) 721 { return(get_error_values(0,0,file,line,NULL,NULL)); } 722 723 unsigned long ERR_peek_error_line_data(const char **file, int *line, 724 const char **data, int *flags) 725 { return(get_error_values(0,0,file,line,data,flags)); } 726 727 728 unsigned long ERR_peek_last_error(void) 729 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); } 730 731 unsigned long ERR_peek_last_error_line(const char **file, int *line) 732 { return(get_error_values(0,1,file,line,NULL,NULL)); } 733 734 unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 735 const char **data, int *flags) 736 { return(get_error_values(0,1,file,line,data,flags)); } 737 738 739 static unsigned long get_error_values(int inc, int top, const char **file, int *line, 740 const char **data, int *flags) 741 { 742 int i=0; 743 ERR_STATE *es; 744 unsigned long ret; 745 746 es=ERR_get_state(); 747 748 if (inc && top) 749 { 750 if (file) *file = ""; 751 if (line) *line = 0; 752 if (data) *data = ""; 753 if (flags) *flags = 0; 754 755 return ERR_R_INTERNAL_ERROR; 756 } 757 758 if (es->bottom == es->top) return 0; 759 if (top) 760 i=es->top; /* last error */ 761 else 762 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */ 763 764 ret=es->err_buffer[i]; 765 if (inc) 766 { 767 es->bottom=i; 768 es->err_buffer[i]=0; 769 } 770 771 if ((file != NULL) && (line != NULL)) 772 { 773 if (es->err_file[i] == NULL) 774 { 775 *file="NA"; 776 if (line != NULL) *line=0; 777 } 778 else 779 { 780 *file=es->err_file[i]; 781 if (line != NULL) *line=es->err_line[i]; 782 } 783 } 784 785 if (data == NULL) 786 { 787 if (inc) 788 { 789 err_clear_data(es, i); 790 } 791 } 792 else 793 { 794 if (es->err_data[i] == NULL) 795 { 796 *data=""; 797 if (flags != NULL) *flags=0; 798 } 799 else 800 { 801 *data=es->err_data[i]; 802 if (flags != NULL) *flags=es->err_data_flags[i]; 803 } 804 } 805 return ret; 806 } 807 808 void ERR_error_string_n(unsigned long e, char *buf, size_t len) 809 { 810 char lsbuf[64], fsbuf[64], rsbuf[64]; 811 const char *ls,*fs,*rs; 812 unsigned long l,f,r; 813 814 l=ERR_GET_LIB(e); 815 f=ERR_GET_FUNC(e); 816 r=ERR_GET_REASON(e); 817 818 ls=ERR_lib_error_string(e); 819 fs=ERR_func_error_string(e); 820 rs=ERR_reason_error_string(e); 821 822 if (ls == NULL) 823 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); 824 if (fs == NULL) 825 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); 826 if (rs == NULL) 827 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); 828 829 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf, 830 fs?fs:fsbuf, rs?rs:rsbuf); 831 if (strlen(buf) == len-1) 832 { 833 /* output may be truncated; make sure we always have 5 834 * colon-separated fields, i.e. 4 colons ... */ 835 #define NUM_COLONS 4 836 if (len > NUM_COLONS) /* ... if possible */ 837 { 838 int i; 839 char *s = buf; 840 841 for (i = 0; i < NUM_COLONS; i++) 842 { 843 char *colon = strchr(s, ':'); 844 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i) 845 { 846 /* set colon no. i at last possible position 847 * (buf[len-1] is the terminating 0)*/ 848 colon = &buf[len-1] - NUM_COLONS + i; 849 *colon = ':'; 850 } 851 s = colon + 1; 852 } 853 } 854 } 855 } 856 857 /* BAD for multi-threading: uses a local buffer if ret == NULL */ 858 /* ERR_error_string_n should be used instead for ret != NULL 859 * as ERR_error_string cannot know how large the buffer is */ 860 char *ERR_error_string(unsigned long e, char *ret) 861 { 862 static char buf[256]; 863 864 if (ret == NULL) ret=buf; 865 ERR_error_string_n(e, ret, 256); 866 867 return ret; 868 } 869 870 LHASH *ERR_get_string_table(void) 871 { 872 err_fns_check(); 873 return ERRFN(err_get)(0); 874 } 875 876 LHASH *ERR_get_err_state_table(void) 877 { 878 err_fns_check(); 879 return ERRFN(thread_get)(0); 880 } 881 882 void ERR_release_err_state_table(LHASH **hash) 883 { 884 err_fns_check(); 885 ERRFN(thread_release)(hash); 886 } 887 888 const char *ERR_lib_error_string(unsigned long e) 889 { 890 ERR_STRING_DATA d,*p; 891 unsigned long l; 892 893 err_fns_check(); 894 l=ERR_GET_LIB(e); 895 d.error=ERR_PACK(l,0,0); 896 p=ERRFN(err_get_item)(&d); 897 return((p == NULL)?NULL:p->string); 898 } 899 900 const char *ERR_func_error_string(unsigned long e) 901 { 902 ERR_STRING_DATA d,*p; 903 unsigned long l,f; 904 905 err_fns_check(); 906 l=ERR_GET_LIB(e); 907 f=ERR_GET_FUNC(e); 908 d.error=ERR_PACK(l,f,0); 909 p=ERRFN(err_get_item)(&d); 910 return((p == NULL)?NULL:p->string); 911 } 912 913 const char *ERR_reason_error_string(unsigned long e) 914 { 915 ERR_STRING_DATA d,*p=NULL; 916 unsigned long l,r; 917 918 err_fns_check(); 919 l=ERR_GET_LIB(e); 920 r=ERR_GET_REASON(e); 921 d.error=ERR_PACK(l,0,r); 922 p=ERRFN(err_get_item)(&d); 923 if (!p) 924 { 925 d.error=ERR_PACK(0,0,r); 926 p=ERRFN(err_get_item)(&d); 927 } 928 return((p == NULL)?NULL:p->string); 929 } 930 931 /* static unsigned long err_hash(ERR_STRING_DATA *a) */ 932 static unsigned long err_hash(const void *a_void) 933 { 934 unsigned long ret,l; 935 936 l=((ERR_STRING_DATA *)a_void)->error; 937 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 938 return(ret^ret%19*13); 939 } 940 941 /* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */ 942 static int err_cmp(const void *a_void, const void *b_void) 943 { 944 return((int)(((ERR_STRING_DATA *)a_void)->error - 945 ((ERR_STRING_DATA *)b_void)->error)); 946 } 947 948 /* static unsigned long pid_hash(ERR_STATE *a) */ 949 static unsigned long pid_hash(const void *a_void) 950 { 951 return(((ERR_STATE *)a_void)->pid*13); 952 } 953 954 /* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */ 955 static int pid_cmp(const void *a_void, const void *b_void) 956 { 957 return((int)((long)((ERR_STATE *)a_void)->pid - 958 (long)((ERR_STATE *)b_void)->pid)); 959 } 960 961 void ERR_remove_state(unsigned long pid) 962 { 963 ERR_STATE tmp; 964 965 err_fns_check(); 966 if (pid == 0) 967 pid=(unsigned long)CRYPTO_thread_id(); 968 tmp.pid=pid; 969 /* thread_del_item automatically destroys the LHASH if the number of 970 * items reaches zero. */ 971 ERRFN(thread_del_item)(&tmp); 972 } 973 974 ERR_STATE *ERR_get_state(void) 975 { 976 static ERR_STATE fallback; 977 ERR_STATE *ret,tmp,*tmpp=NULL; 978 int i; 979 unsigned long pid; 980 981 err_fns_check(); 982 pid=(unsigned long)CRYPTO_thread_id(); 983 tmp.pid=pid; 984 ret=ERRFN(thread_get_item)(&tmp); 985 986 /* ret == the error state, if NULL, make a new one */ 987 if (ret == NULL) 988 { 989 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); 990 if (ret == NULL) return(&fallback); 991 ret->pid=pid; 992 ret->top=0; 993 ret->bottom=0; 994 for (i=0; i<ERR_NUM_ERRORS; i++) 995 { 996 ret->err_data[i]=NULL; 997 ret->err_data_flags[i]=0; 998 } 999 tmpp = ERRFN(thread_set_item)(ret); 1000 /* To check if insertion failed, do a get. */ 1001 if (ERRFN(thread_get_item)(ret) != ret) 1002 { 1003 ERR_STATE_free(ret); /* could not insert it */ 1004 return(&fallback); 1005 } 1006 /* If a race occured in this function and we came second, tmpp 1007 * is the first one that we just replaced. */ 1008 if (tmpp) 1009 ERR_STATE_free(tmpp); 1010 } 1011 return ret; 1012 } 1013 1014 int ERR_get_next_error_library(void) 1015 { 1016 err_fns_check(); 1017 return ERRFN(get_next_lib)(); 1018 } 1019 1020 void ERR_set_error_data(char *data, int flags) 1021 { 1022 ERR_STATE *es; 1023 int i; 1024 1025 es=ERR_get_state(); 1026 1027 i=es->top; 1028 if (i == 0) 1029 i=ERR_NUM_ERRORS-1; 1030 1031 err_clear_data(es,i); 1032 es->err_data[i]=data; 1033 es->err_data_flags[i]=flags; 1034 } 1035 1036 void ERR_add_error_data(int num, ...) 1037 { 1038 va_list args; 1039 int i,n,s; 1040 char *str,*p,*a; 1041 1042 s=80; 1043 str=OPENSSL_malloc(s+1); 1044 if (str == NULL) return; 1045 str[0]='\0'; 1046 1047 va_start(args, num); 1048 n=0; 1049 for (i=0; i<num; i++) 1050 { 1051 a=va_arg(args, char*); 1052 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 1053 if (a != NULL) 1054 { 1055 n+=strlen(a); 1056 if (n > s) 1057 { 1058 s=n+20; 1059 p=OPENSSL_realloc(str,s+1); 1060 if (p == NULL) 1061 { 1062 OPENSSL_free(str); 1063 goto err; 1064 } 1065 else 1066 str=p; 1067 } 1068 strlcat(str,a,s+1); 1069 } 1070 } 1071 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); 1072 1073 err: 1074 va_end(args); 1075 } 1076