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 {ERR_PACK(ERR_LIB_FIPS,0,0) ,"FIPS routines"}, 153 {0,NULL}, 154 }; 155 156 static ERR_STRING_DATA ERR_str_functs[]= 157 { 158 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"}, 159 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"}, 160 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"}, 161 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"}, 162 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"}, 163 {ERR_PACK(0,SYS_F_BIND,0), "bind"}, 164 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"}, 165 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"}, 166 #ifdef OPENSSL_SYS_WINDOWS 167 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"}, 168 #endif 169 {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"}, 170 {ERR_PACK(0,SYS_F_FREAD,0), "fread"}, 171 {ERR_PACK(0,SYS_F_GETADDRINFO,0), "getaddrinfo"}, 172 {0,NULL}, 173 }; 174 175 static ERR_STRING_DATA ERR_str_reasons[]= 176 { 177 {ERR_R_SYS_LIB ,"system lib"}, 178 {ERR_R_BN_LIB ,"BN lib"}, 179 {ERR_R_RSA_LIB ,"RSA lib"}, 180 {ERR_R_DH_LIB ,"DH lib"}, 181 {ERR_R_EVP_LIB ,"EVP lib"}, 182 {ERR_R_BUF_LIB ,"BUF lib"}, 183 {ERR_R_OBJ_LIB ,"OBJ lib"}, 184 {ERR_R_PEM_LIB ,"PEM lib"}, 185 {ERR_R_DSA_LIB ,"DSA lib"}, 186 {ERR_R_X509_LIB ,"X509 lib"}, 187 {ERR_R_ASN1_LIB ,"ASN1 lib"}, 188 {ERR_R_CONF_LIB ,"CONF lib"}, 189 {ERR_R_CRYPTO_LIB ,"CRYPTO lib"}, 190 {ERR_R_EC_LIB ,"EC lib"}, 191 {ERR_R_SSL_LIB ,"SSL lib"}, 192 {ERR_R_BIO_LIB ,"BIO lib"}, 193 {ERR_R_PKCS7_LIB ,"PKCS7 lib"}, 194 {ERR_R_X509V3_LIB ,"X509V3 lib"}, 195 {ERR_R_PKCS12_LIB ,"PKCS12 lib"}, 196 {ERR_R_RAND_LIB ,"RAND lib"}, 197 {ERR_R_DSO_LIB ,"DSO lib"}, 198 {ERR_R_ENGINE_LIB ,"ENGINE lib"}, 199 {ERR_R_OCSP_LIB ,"OCSP lib"}, 200 201 {ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"}, 202 {ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"}, 203 {ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"}, 204 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"}, 205 {ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"}, 206 {ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"}, 207 208 {ERR_R_FATAL ,"fatal"}, 209 {ERR_R_MALLOC_FAILURE ,"malloc failure"}, 210 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"}, 211 {ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"}, 212 {ERR_R_INTERNAL_ERROR ,"internal error"}, 213 214 {0,NULL}, 215 }; 216 #endif 217 218 219 /* Define the predeclared (but externally opaque) "ERR_FNS" type */ 220 struct st_ERR_FNS 221 { 222 /* Works on the "error_hash" string table */ 223 LHASH *(*cb_err_get)(int create); 224 void (*cb_err_del)(void); 225 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 226 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 227 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 228 /* Works on the "thread_hash" error-state table */ 229 LHASH *(*cb_thread_get)(int create); 230 void (*cb_thread_release)(LHASH **hash); 231 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 232 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 233 void (*cb_thread_del_item)(const ERR_STATE *); 234 /* Returns the next available error "library" numbers */ 235 int (*cb_get_next_lib)(void); 236 }; 237 238 /* Predeclarations of the "err_defaults" functions */ 239 static LHASH *int_err_get(int create); 240 static void int_err_del(void); 241 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 242 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 243 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 244 static LHASH *int_thread_get(int create); 245 static void int_thread_release(LHASH **hash); 246 static ERR_STATE *int_thread_get_item(const ERR_STATE *); 247 static ERR_STATE *int_thread_set_item(ERR_STATE *); 248 static void int_thread_del_item(const ERR_STATE *); 249 static int int_err_get_next_lib(void); 250 /* The static ERR_FNS table using these defaults functions */ 251 static const ERR_FNS err_defaults = 252 { 253 int_err_get, 254 int_err_del, 255 int_err_get_item, 256 int_err_set_item, 257 int_err_del_item, 258 int_thread_get, 259 int_thread_release, 260 int_thread_get_item, 261 int_thread_set_item, 262 int_thread_del_item, 263 int_err_get_next_lib 264 }; 265 266 /* The replacable table of ERR_FNS functions we use at run-time */ 267 static const ERR_FNS *err_fns = NULL; 268 269 /* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 270 #define ERRFN(a) err_fns->cb_##a 271 272 /* The internal state used by "err_defaults" - as such, the setting, reading, 273 * creating, and deleting of this data should only be permitted via the 274 * "err_defaults" functions. This way, a linked module can completely defer all 275 * ERR state operation (together with requisite locking) to the implementations 276 * and state in the loading application. */ 277 static LHASH *int_error_hash = NULL; 278 static LHASH *int_thread_hash = NULL; 279 static int int_thread_hash_references = 0; 280 static int int_err_library_number= ERR_LIB_USER; 281 282 /* Internal function that checks whether "err_fns" is set and if not, sets it to 283 * the defaults. */ 284 static void err_fns_check(void) 285 { 286 if (err_fns) return; 287 288 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 289 if (!err_fns) 290 err_fns = &err_defaults; 291 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 292 } 293 294 /* API functions to get or set the underlying ERR functions. */ 295 296 const ERR_FNS *ERR_get_implementation(void) 297 { 298 err_fns_check(); 299 return err_fns; 300 } 301 302 int ERR_set_implementation(const ERR_FNS *fns) 303 { 304 int ret = 0; 305 306 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 307 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 308 * an error is there?! */ 309 if (!err_fns) 310 { 311 err_fns = fns; 312 ret = 1; 313 } 314 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 315 return ret; 316 } 317 318 /* These are the callbacks provided to "lh_new()" when creating the LHASH tables 319 * internal to the "err_defaults" implementation. */ 320 321 /* static unsigned long err_hash(ERR_STRING_DATA *a); */ 322 static unsigned long err_hash(const void *a_void); 323 /* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */ 324 static int err_cmp(const void *a_void, const void *b_void); 325 /* static unsigned long pid_hash(ERR_STATE *pid); */ 326 static unsigned long pid_hash(const void *pid_void); 327 /* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */ 328 static int pid_cmp(const void *a_void,const void *pid_void); 329 static unsigned long get_error_values(int inc,int top,const char **file,int *line, 330 const char **data,int *flags); 331 332 /* The internal functions used in the "err_defaults" implementation */ 333 334 static LHASH *int_err_get(int create) 335 { 336 LHASH *ret = NULL; 337 338 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 339 if (!int_error_hash && create) 340 { 341 CRYPTO_push_info("int_err_get (err.c)"); 342 int_error_hash = lh_new(err_hash, err_cmp); 343 CRYPTO_pop_info(); 344 } 345 if (int_error_hash) 346 ret = int_error_hash; 347 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 348 349 return ret; 350 } 351 352 static void int_err_del(void) 353 { 354 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 355 if (int_error_hash) 356 { 357 lh_free(int_error_hash); 358 int_error_hash = NULL; 359 } 360 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 361 } 362 363 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) 364 { 365 ERR_STRING_DATA *p; 366 LHASH *hash; 367 368 err_fns_check(); 369 hash = ERRFN(err_get)(0); 370 if (!hash) 371 return NULL; 372 373 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 374 p = (ERR_STRING_DATA *)lh_retrieve(hash, d); 375 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 376 377 return p; 378 } 379 380 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) 381 { 382 ERR_STRING_DATA *p; 383 LHASH *hash; 384 385 err_fns_check(); 386 hash = ERRFN(err_get)(1); 387 if (!hash) 388 return NULL; 389 390 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 391 p = (ERR_STRING_DATA *)lh_insert(hash, d); 392 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 393 394 return p; 395 } 396 397 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) 398 { 399 ERR_STRING_DATA *p; 400 LHASH *hash; 401 402 err_fns_check(); 403 hash = ERRFN(err_get)(0); 404 if (!hash) 405 return NULL; 406 407 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 408 p = (ERR_STRING_DATA *)lh_delete(hash, d); 409 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 410 411 return p; 412 } 413 414 static LHASH *int_thread_get(int create) 415 { 416 LHASH *ret = NULL; 417 418 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 419 if (!int_thread_hash && create) 420 { 421 CRYPTO_push_info("int_thread_get (err.c)"); 422 int_thread_hash = lh_new(pid_hash, pid_cmp); 423 CRYPTO_pop_info(); 424 } 425 if (int_thread_hash) 426 { 427 int_thread_hash_references++; 428 ret = int_thread_hash; 429 } 430 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 431 return ret; 432 } 433 434 static void int_thread_release(LHASH **hash) 435 { 436 int i; 437 438 if (hash == NULL || *hash == NULL) 439 return; 440 441 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 442 443 #ifdef REF_PRINT 444 fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR"); 445 #endif 446 if (i > 0) return; 447 #ifdef REF_CHECK 448 if (i < 0) 449 { 450 fprintf(stderr,"int_thread_release, bad reference count\n"); 451 abort(); /* ok */ 452 } 453 #endif 454 *hash = NULL; 455 } 456 457 static ERR_STATE *int_thread_get_item(const ERR_STATE *d) 458 { 459 ERR_STATE *p; 460 LHASH *hash; 461 462 err_fns_check(); 463 hash = ERRFN(thread_get)(0); 464 if (!hash) 465 return NULL; 466 467 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 468 p = (ERR_STATE *)lh_retrieve(hash, d); 469 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 470 471 ERRFN(thread_release)(&hash); 472 return p; 473 } 474 475 static ERR_STATE *int_thread_set_item(ERR_STATE *d) 476 { 477 ERR_STATE *p; 478 LHASH *hash; 479 480 err_fns_check(); 481 hash = ERRFN(thread_get)(1); 482 if (!hash) 483 return NULL; 484 485 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 486 p = (ERR_STATE *)lh_insert(hash, d); 487 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 488 489 ERRFN(thread_release)(&hash); 490 return p; 491 } 492 493 static void int_thread_del_item(const ERR_STATE *d) 494 { 495 ERR_STATE *p; 496 LHASH *hash; 497 498 err_fns_check(); 499 hash = ERRFN(thread_get)(0); 500 if (!hash) 501 return; 502 503 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 504 p = (ERR_STATE *)lh_delete(hash, d); 505 /* make sure we don't leak memory */ 506 if (int_thread_hash_references == 1 507 && int_thread_hash && (lh_num_items(int_thread_hash) == 0)) 508 { 509 lh_free(int_thread_hash); 510 int_thread_hash = NULL; 511 } 512 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 513 514 ERRFN(thread_release)(&hash); 515 if (p) 516 ERR_STATE_free(p); 517 } 518 519 static int int_err_get_next_lib(void) 520 { 521 int ret; 522 523 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 524 ret = int_err_library_number++; 525 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 526 527 return ret; 528 } 529 530 531 #ifndef OPENSSL_NO_ERR 532 #define NUM_SYS_STR_REASONS 127 533 #define LEN_SYS_STR_REASON 32 534 535 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 536 /* SYS_str_reasons is filled with copies of strerror() results at 537 * initialization. 538 * 'errno' values up to 127 should cover all usual errors, 539 * others will be displayed numerically by ERR_error_string. 540 * It is crucial that we have something for each reason code 541 * that occurs in ERR_str_reasons, or bogus reason strings 542 * will be returned for SYSerr(), which always gets an errno 543 * value and never one of those 'standard' reason codes. */ 544 545 static void build_SYS_str_reasons() 546 { 547 /* OPENSSL_malloc cannot be used here, use static storage instead */ 548 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 549 int i; 550 static int init = 1; 551 552 if (!init) return; 553 554 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 555 556 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) 557 { 558 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 559 560 str->error = (unsigned long)i; 561 if (str->string == NULL) 562 { 563 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 564 char *src = strerror(i); 565 if (src != NULL) 566 { 567 strncpy(*dest, src, sizeof *dest); 568 (*dest)[sizeof *dest - 1] = '\0'; 569 str->string = *dest; 570 } 571 } 572 if (str->string == NULL) 573 str->string = "unknown"; 574 } 575 576 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 577 * as required by ERR_load_strings. */ 578 579 init = 0; 580 581 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 582 } 583 #endif 584 585 #define err_clear_data(p,i) \ 586 if (((p)->err_data[i] != NULL) && \ 587 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 588 { \ 589 OPENSSL_free((p)->err_data[i]); \ 590 (p)->err_data[i]=NULL; \ 591 } \ 592 (p)->err_data_flags[i]=0; 593 594 static void ERR_STATE_free(ERR_STATE *s) 595 { 596 int i; 597 598 if (s == NULL) 599 return; 600 601 for (i=0; i<ERR_NUM_ERRORS; i++) 602 { 603 err_clear_data(s,i); 604 } 605 OPENSSL_free(s); 606 } 607 608 void ERR_load_ERR_strings(void) 609 { 610 err_fns_check(); 611 #ifndef OPENSSL_NO_ERR 612 err_load_strings(0,ERR_str_libraries); 613 err_load_strings(0,ERR_str_reasons); 614 err_load_strings(ERR_LIB_SYS,ERR_str_functs); 615 build_SYS_str_reasons(); 616 err_load_strings(ERR_LIB_SYS,SYS_str_reasons); 617 #endif 618 } 619 620 static void err_load_strings(int lib, ERR_STRING_DATA *str) 621 { 622 while (str->error) 623 { 624 if (lib) 625 str->error|=ERR_PACK(lib,0,0); 626 ERRFN(err_set_item)(str); 627 str++; 628 } 629 } 630 631 void ERR_load_strings(int lib, ERR_STRING_DATA *str) 632 { 633 ERR_load_ERR_strings(); 634 err_load_strings(lib, str); 635 } 636 637 void ERR_unload_strings(int lib, ERR_STRING_DATA *str) 638 { 639 while (str->error) 640 { 641 if (lib) 642 str->error|=ERR_PACK(lib,0,0); 643 ERRFN(err_del_item)(str); 644 str++; 645 } 646 } 647 648 void ERR_free_strings(void) 649 { 650 err_fns_check(); 651 ERRFN(err_del)(); 652 } 653 654 /********************************************************/ 655 656 void ERR_put_error(int lib, int func, int reason, const char *file, 657 int line) 658 { 659 ERR_STATE *es; 660 661 #ifdef _OSD_POSIX 662 /* In the BS2000-OSD POSIX subsystem, the compiler generates 663 * path names in the form "*POSIX(/etc/passwd)". 664 * This dirty hack strips them to something sensible. 665 * @@@ We shouldn't modify a const string, though. 666 */ 667 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) { 668 char *end; 669 670 /* Skip the "*POSIX(" prefix */ 671 file += sizeof("*POSIX(")-1; 672 end = &file[strlen(file)-1]; 673 if (*end == ')') 674 *end = '\0'; 675 /* Optional: use the basename of the path only. */ 676 if ((end = strrchr(file, '/')) != NULL) 677 file = &end[1]; 678 } 679 #endif 680 es=ERR_get_state(); 681 682 es->top=(es->top+1)%ERR_NUM_ERRORS; 683 if (es->top == es->bottom) 684 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; 685 es->err_buffer[es->top]=ERR_PACK(lib,func,reason); 686 es->err_file[es->top]=file; 687 es->err_line[es->top]=line; 688 err_clear_data(es,es->top); 689 } 690 691 void ERR_clear_error(void) 692 { 693 int i; 694 ERR_STATE *es; 695 696 es=ERR_get_state(); 697 698 for (i=0; i<ERR_NUM_ERRORS; i++) 699 { 700 es->err_buffer[i]=0; 701 err_clear_data(es,i); 702 es->err_file[i]=NULL; 703 es->err_line[i]= -1; 704 } 705 es->top=es->bottom=0; 706 } 707 708 709 unsigned long ERR_get_error(void) 710 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); } 711 712 unsigned long ERR_get_error_line(const char **file, 713 int *line) 714 { return(get_error_values(1,0,file,line,NULL,NULL)); } 715 716 unsigned long ERR_get_error_line_data(const char **file, int *line, 717 const char **data, int *flags) 718 { return(get_error_values(1,0,file,line,data,flags)); } 719 720 721 unsigned long ERR_peek_error(void) 722 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); } 723 724 unsigned long ERR_peek_error_line(const char **file, int *line) 725 { return(get_error_values(0,0,file,line,NULL,NULL)); } 726 727 unsigned long ERR_peek_error_line_data(const char **file, int *line, 728 const char **data, int *flags) 729 { return(get_error_values(0,0,file,line,data,flags)); } 730 731 732 unsigned long ERR_peek_last_error(void) 733 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); } 734 735 unsigned long ERR_peek_last_error_line(const char **file, int *line) 736 { return(get_error_values(0,1,file,line,NULL,NULL)); } 737 738 unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 739 const char **data, int *flags) 740 { return(get_error_values(0,1,file,line,data,flags)); } 741 742 743 static unsigned long get_error_values(int inc, int top, const char **file, int *line, 744 const char **data, int *flags) 745 { 746 int i=0; 747 ERR_STATE *es; 748 unsigned long ret; 749 750 es=ERR_get_state(); 751 752 if (inc && top) 753 { 754 if (file) *file = ""; 755 if (line) *line = 0; 756 if (data) *data = ""; 757 if (flags) *flags = 0; 758 759 return ERR_R_INTERNAL_ERROR; 760 } 761 762 if (es->bottom == es->top) return 0; 763 if (top) 764 i=es->top; /* last error */ 765 else 766 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */ 767 768 ret=es->err_buffer[i]; 769 if (inc) 770 { 771 es->bottom=i; 772 es->err_buffer[i]=0; 773 } 774 775 if ((file != NULL) && (line != NULL)) 776 { 777 if (es->err_file[i] == NULL) 778 { 779 *file="NA"; 780 if (line != NULL) *line=0; 781 } 782 else 783 { 784 *file=es->err_file[i]; 785 if (line != NULL) *line=es->err_line[i]; 786 } 787 } 788 789 if (data == NULL) 790 { 791 if (inc) 792 { 793 err_clear_data(es, i); 794 } 795 } 796 else 797 { 798 if (es->err_data[i] == NULL) 799 { 800 *data=""; 801 if (flags != NULL) *flags=0; 802 } 803 else 804 { 805 *data=es->err_data[i]; 806 if (flags != NULL) *flags=es->err_data_flags[i]; 807 } 808 } 809 return ret; 810 } 811 812 void ERR_error_string_n(unsigned long e, char *buf, size_t len) 813 { 814 char lsbuf[64], fsbuf[64], rsbuf[64]; 815 const char *ls,*fs,*rs; 816 unsigned long l,f,r; 817 818 l=ERR_GET_LIB(e); 819 f=ERR_GET_FUNC(e); 820 r=ERR_GET_REASON(e); 821 822 ls=ERR_lib_error_string(e); 823 fs=ERR_func_error_string(e); 824 rs=ERR_reason_error_string(e); 825 826 if (ls == NULL) 827 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); 828 if (fs == NULL) 829 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); 830 if (rs == NULL) 831 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); 832 833 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf, 834 fs?fs:fsbuf, rs?rs:rsbuf); 835 if (strlen(buf) == len-1) 836 { 837 /* output may be truncated; make sure we always have 5 838 * colon-separated fields, i.e. 4 colons ... */ 839 #define NUM_COLONS 4 840 if (len > NUM_COLONS) /* ... if possible */ 841 { 842 int i; 843 char *s = buf; 844 845 for (i = 0; i < NUM_COLONS; i++) 846 { 847 char *colon = strchr(s, ':'); 848 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i) 849 { 850 /* set colon no. i at last possible position 851 * (buf[len-1] is the terminating 0)*/ 852 colon = &buf[len-1] - NUM_COLONS + i; 853 *colon = ':'; 854 } 855 s = colon + 1; 856 } 857 } 858 } 859 } 860 861 /* BAD for multi-threading: uses a local buffer if ret == NULL */ 862 /* ERR_error_string_n should be used instead for ret != NULL 863 * as ERR_error_string cannot know how large the buffer is */ 864 char *ERR_error_string(unsigned long e, char *ret) 865 { 866 static char buf[256]; 867 868 if (ret == NULL) ret=buf; 869 ERR_error_string_n(e, ret, 256); 870 871 return ret; 872 } 873 874 LHASH *ERR_get_string_table(void) 875 { 876 err_fns_check(); 877 return ERRFN(err_get)(0); 878 } 879 880 LHASH *ERR_get_err_state_table(void) 881 { 882 err_fns_check(); 883 return ERRFN(thread_get)(0); 884 } 885 886 void ERR_release_err_state_table(LHASH **hash) 887 { 888 err_fns_check(); 889 ERRFN(thread_release)(hash); 890 } 891 892 const char *ERR_lib_error_string(unsigned long e) 893 { 894 ERR_STRING_DATA d,*p; 895 unsigned long l; 896 897 err_fns_check(); 898 l=ERR_GET_LIB(e); 899 d.error=ERR_PACK(l,0,0); 900 p=ERRFN(err_get_item)(&d); 901 return((p == NULL)?NULL:p->string); 902 } 903 904 const char *ERR_func_error_string(unsigned long e) 905 { 906 ERR_STRING_DATA d,*p; 907 unsigned long l,f; 908 909 err_fns_check(); 910 l=ERR_GET_LIB(e); 911 f=ERR_GET_FUNC(e); 912 d.error=ERR_PACK(l,f,0); 913 p=ERRFN(err_get_item)(&d); 914 return((p == NULL)?NULL:p->string); 915 } 916 917 const char *ERR_reason_error_string(unsigned long e) 918 { 919 ERR_STRING_DATA d,*p=NULL; 920 unsigned long l,r; 921 922 err_fns_check(); 923 l=ERR_GET_LIB(e); 924 r=ERR_GET_REASON(e); 925 d.error=ERR_PACK(l,0,r); 926 p=ERRFN(err_get_item)(&d); 927 if (!p) 928 { 929 d.error=ERR_PACK(0,0,r); 930 p=ERRFN(err_get_item)(&d); 931 } 932 return((p == NULL)?NULL:p->string); 933 } 934 935 /* static unsigned long err_hash(ERR_STRING_DATA *a) */ 936 static unsigned long err_hash(const void *a_void) 937 { 938 unsigned long ret,l; 939 940 l=((ERR_STRING_DATA *)a_void)->error; 941 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 942 return(ret^ret%19*13); 943 } 944 945 /* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */ 946 static int err_cmp(const void *a_void, const void *b_void) 947 { 948 return((int)(((ERR_STRING_DATA *)a_void)->error - 949 ((ERR_STRING_DATA *)b_void)->error)); 950 } 951 952 /* static unsigned long pid_hash(ERR_STATE *a) */ 953 static unsigned long pid_hash(const void *a_void) 954 { 955 return(((ERR_STATE *)a_void)->pid*13); 956 } 957 958 /* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */ 959 static int pid_cmp(const void *a_void, const void *b_void) 960 { 961 return((int)((long)((ERR_STATE *)a_void)->pid - 962 (long)((ERR_STATE *)b_void)->pid)); 963 } 964 965 void ERR_remove_state(unsigned long pid) 966 { 967 ERR_STATE tmp; 968 969 err_fns_check(); 970 if (pid == 0) 971 pid=(unsigned long)CRYPTO_thread_id(); 972 tmp.pid=pid; 973 /* thread_del_item automatically destroys the LHASH if the number of 974 * items reaches zero. */ 975 ERRFN(thread_del_item)(&tmp); 976 } 977 978 ERR_STATE *ERR_get_state(void) 979 { 980 static ERR_STATE fallback; 981 ERR_STATE *ret,tmp,*tmpp=NULL; 982 int i; 983 unsigned long pid; 984 985 err_fns_check(); 986 pid=(unsigned long)CRYPTO_thread_id(); 987 tmp.pid=pid; 988 ret=ERRFN(thread_get_item)(&tmp); 989 990 /* ret == the error state, if NULL, make a new one */ 991 if (ret == NULL) 992 { 993 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); 994 if (ret == NULL) return(&fallback); 995 ret->pid=pid; 996 ret->top=0; 997 ret->bottom=0; 998 for (i=0; i<ERR_NUM_ERRORS; i++) 999 { 1000 ret->err_data[i]=NULL; 1001 ret->err_data_flags[i]=0; 1002 } 1003 tmpp = ERRFN(thread_set_item)(ret); 1004 /* To check if insertion failed, do a get. */ 1005 if (ERRFN(thread_get_item)(ret) != ret) 1006 { 1007 ERR_STATE_free(ret); /* could not insert it */ 1008 return(&fallback); 1009 } 1010 /* If a race occured in this function and we came second, tmpp 1011 * is the first one that we just replaced. */ 1012 if (tmpp) 1013 ERR_STATE_free(tmpp); 1014 } 1015 return ret; 1016 } 1017 1018 int ERR_get_next_error_library(void) 1019 { 1020 err_fns_check(); 1021 return ERRFN(get_next_lib)(); 1022 } 1023 1024 void ERR_set_error_data(char *data, int flags) 1025 { 1026 ERR_STATE *es; 1027 int i; 1028 1029 es=ERR_get_state(); 1030 1031 i=es->top; 1032 if (i == 0) 1033 i=ERR_NUM_ERRORS-1; 1034 1035 err_clear_data(es,i); 1036 es->err_data[i]=data; 1037 es->err_data_flags[i]=flags; 1038 } 1039 1040 void ERR_add_error_data(int num, ...) 1041 { 1042 va_list args; 1043 int i,n,s; 1044 char *str,*p,*a; 1045 1046 s=80; 1047 str=OPENSSL_malloc(s+1); 1048 if (str == NULL) return; 1049 str[0]='\0'; 1050 1051 va_start(args, num); 1052 n=0; 1053 for (i=0; i<num; i++) 1054 { 1055 a=va_arg(args, char*); 1056 /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ 1057 if (a != NULL) 1058 { 1059 n+=strlen(a); 1060 if (n > s) 1061 { 1062 s=n+20; 1063 p=OPENSSL_realloc(str,s+1); 1064 if (p == NULL) 1065 { 1066 OPENSSL_free(str); 1067 goto err; 1068 } 1069 else 1070 str=p; 1071 } 1072 BUF_strlcat(str,a,s+1); 1073 } 1074 } 1075 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); 1076 1077 err: 1078 va_end(args); 1079 } 1080