1 /* crypto/err/err.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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) 1998-2006 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 (at) 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 (at) cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh (at) cryptsoft.com). 109 * 110 */ 111 112 #include <stdio.h> 113 #include <stdarg.h> 114 #include <string.h> 115 #include "cryptlib.h" 116 #include <openssl/lhash.h> 117 #include <openssl/crypto.h> 118 #include <openssl/buffer.h> 119 #include <openssl/bio.h> 120 #include <openssl/err.h> 121 122 DECLARE_LHASH_OF(ERR_STRING_DATA); 123 DECLARE_LHASH_OF(ERR_STATE); 124 125 static void err_load_strings(int lib, ERR_STRING_DATA *str); 126 127 static void ERR_STATE_free(ERR_STATE *s); 128 #ifndef OPENSSL_NO_ERR 129 static ERR_STRING_DATA ERR_str_libraries[]= 130 { 131 {ERR_PACK(ERR_LIB_NONE,0,0) ,"unknown library"}, 132 {ERR_PACK(ERR_LIB_SYS,0,0) ,"system library"}, 133 {ERR_PACK(ERR_LIB_BN,0,0) ,"bignum routines"}, 134 {ERR_PACK(ERR_LIB_RSA,0,0) ,"rsa routines"}, 135 {ERR_PACK(ERR_LIB_DH,0,0) ,"Diffie-Hellman routines"}, 136 {ERR_PACK(ERR_LIB_EVP,0,0) ,"digital envelope routines"}, 137 {ERR_PACK(ERR_LIB_BUF,0,0) ,"memory buffer routines"}, 138 {ERR_PACK(ERR_LIB_OBJ,0,0) ,"object identifier routines"}, 139 {ERR_PACK(ERR_LIB_PEM,0,0) ,"PEM routines"}, 140 {ERR_PACK(ERR_LIB_DSA,0,0) ,"dsa routines"}, 141 {ERR_PACK(ERR_LIB_X509,0,0) ,"x509 certificate routines"}, 142 {ERR_PACK(ERR_LIB_ASN1,0,0) ,"asn1 encoding routines"}, 143 {ERR_PACK(ERR_LIB_CONF,0,0) ,"configuration file routines"}, 144 {ERR_PACK(ERR_LIB_CRYPTO,0,0) ,"common libcrypto routines"}, 145 {ERR_PACK(ERR_LIB_EC,0,0) ,"elliptic curve routines"}, 146 {ERR_PACK(ERR_LIB_SSL,0,0) ,"SSL routines"}, 147 {ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"}, 148 {ERR_PACK(ERR_LIB_PKCS7,0,0) ,"PKCS7 routines"}, 149 {ERR_PACK(ERR_LIB_X509V3,0,0) ,"X509 V3 routines"}, 150 {ERR_PACK(ERR_LIB_PKCS12,0,0) ,"PKCS12 routines"}, 151 {ERR_PACK(ERR_LIB_RAND,0,0) ,"random number generator"}, 152 {ERR_PACK(ERR_LIB_DSO,0,0) ,"DSO support routines"}, 153 {ERR_PACK(ERR_LIB_TS,0,0) ,"time stamp routines"}, 154 {ERR_PACK(ERR_LIB_ENGINE,0,0) ,"engine routines"}, 155 {ERR_PACK(ERR_LIB_OCSP,0,0) ,"OCSP routines"}, 156 {ERR_PACK(ERR_LIB_FIPS,0,0) ,"FIPS routines"}, 157 {ERR_PACK(ERR_LIB_CMS,0,0) ,"CMS routines"}, 158 {ERR_PACK(ERR_LIB_HMAC,0,0) ,"HMAC routines"}, 159 {0,NULL}, 160 }; 161 162 static ERR_STRING_DATA ERR_str_functs[]= 163 { 164 {ERR_PACK(0,SYS_F_FOPEN,0), "fopen"}, 165 {ERR_PACK(0,SYS_F_CONNECT,0), "connect"}, 166 {ERR_PACK(0,SYS_F_GETSERVBYNAME,0), "getservbyname"}, 167 {ERR_PACK(0,SYS_F_SOCKET,0), "socket"}, 168 {ERR_PACK(0,SYS_F_IOCTLSOCKET,0), "ioctlsocket"}, 169 {ERR_PACK(0,SYS_F_BIND,0), "bind"}, 170 {ERR_PACK(0,SYS_F_LISTEN,0), "listen"}, 171 {ERR_PACK(0,SYS_F_ACCEPT,0), "accept"}, 172 #ifdef OPENSSL_SYS_WINDOWS 173 {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"}, 174 #endif 175 {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"}, 176 {ERR_PACK(0,SYS_F_FREAD,0), "fread"}, 177 {0,NULL}, 178 }; 179 180 static ERR_STRING_DATA ERR_str_reasons[]= 181 { 182 {ERR_R_SYS_LIB ,"system lib"}, 183 {ERR_R_BN_LIB ,"BN lib"}, 184 {ERR_R_RSA_LIB ,"RSA lib"}, 185 {ERR_R_DH_LIB ,"DH lib"}, 186 {ERR_R_EVP_LIB ,"EVP lib"}, 187 {ERR_R_BUF_LIB ,"BUF lib"}, 188 {ERR_R_OBJ_LIB ,"OBJ lib"}, 189 {ERR_R_PEM_LIB ,"PEM lib"}, 190 {ERR_R_DSA_LIB ,"DSA lib"}, 191 {ERR_R_X509_LIB ,"X509 lib"}, 192 {ERR_R_ASN1_LIB ,"ASN1 lib"}, 193 {ERR_R_CONF_LIB ,"CONF lib"}, 194 {ERR_R_CRYPTO_LIB ,"CRYPTO lib"}, 195 {ERR_R_EC_LIB ,"EC lib"}, 196 {ERR_R_SSL_LIB ,"SSL lib"}, 197 {ERR_R_BIO_LIB ,"BIO lib"}, 198 {ERR_R_PKCS7_LIB ,"PKCS7 lib"}, 199 {ERR_R_X509V3_LIB ,"X509V3 lib"}, 200 {ERR_R_PKCS12_LIB ,"PKCS12 lib"}, 201 {ERR_R_RAND_LIB ,"RAND lib"}, 202 {ERR_R_DSO_LIB ,"DSO lib"}, 203 {ERR_R_ENGINE_LIB ,"ENGINE lib"}, 204 {ERR_R_OCSP_LIB ,"OCSP lib"}, 205 {ERR_R_TS_LIB ,"TS lib"}, 206 207 {ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"}, 208 {ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"}, 209 {ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"}, 210 {ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"}, 211 {ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"}, 212 {ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"}, 213 214 {ERR_R_FATAL ,"fatal"}, 215 {ERR_R_MALLOC_FAILURE ,"malloc failure"}, 216 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"}, 217 {ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"}, 218 {ERR_R_INTERNAL_ERROR ,"internal error"}, 219 {ERR_R_DISABLED ,"called a function that was disabled at compile-time"}, 220 221 {0,NULL}, 222 }; 223 #endif 224 225 226 /* Define the predeclared (but externally opaque) "ERR_FNS" type */ 227 struct st_ERR_FNS 228 { 229 /* Works on the "error_hash" string table */ 230 LHASH_OF(ERR_STRING_DATA) *(*cb_err_get)(int create); 231 void (*cb_err_del)(void); 232 ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); 233 ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); 234 ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); 235 /* Works on the "thread_hash" error-state table */ 236 LHASH_OF(ERR_STATE) *(*cb_thread_get)(int create); 237 void (*cb_thread_release)(LHASH_OF(ERR_STATE) **hash); 238 ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); 239 ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); 240 void (*cb_thread_del_item)(const ERR_STATE *); 241 /* Returns the next available error "library" numbers */ 242 int (*cb_get_next_lib)(void); 243 }; 244 245 /* Predeclarations of the "err_defaults" functions */ 246 static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create); 247 static void int_err_del(void); 248 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 249 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); 250 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); 251 static LHASH_OF(ERR_STATE) *int_thread_get(int create); 252 static void int_thread_release(LHASH_OF(ERR_STATE) **hash); 253 static ERR_STATE *int_thread_get_item(const ERR_STATE *); 254 static ERR_STATE *int_thread_set_item(ERR_STATE *); 255 static void int_thread_del_item(const ERR_STATE *); 256 static int int_err_get_next_lib(void); 257 /* The static ERR_FNS table using these defaults functions */ 258 static const ERR_FNS err_defaults = 259 { 260 int_err_get, 261 int_err_del, 262 int_err_get_item, 263 int_err_set_item, 264 int_err_del_item, 265 int_thread_get, 266 int_thread_release, 267 int_thread_get_item, 268 int_thread_set_item, 269 int_thread_del_item, 270 int_err_get_next_lib 271 }; 272 273 /* The replacable table of ERR_FNS functions we use at run-time */ 274 static const ERR_FNS *err_fns = NULL; 275 276 /* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ 277 #define ERRFN(a) err_fns->cb_##a 278 279 /* The internal state used by "err_defaults" - as such, the setting, reading, 280 * creating, and deleting of this data should only be permitted via the 281 * "err_defaults" functions. This way, a linked module can completely defer all 282 * ERR state operation (together with requisite locking) to the implementations 283 * and state in the loading application. */ 284 static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; 285 static LHASH_OF(ERR_STATE) *int_thread_hash = NULL; 286 static int int_thread_hash_references = 0; 287 static int int_err_library_number= ERR_LIB_USER; 288 289 /* Internal function that checks whether "err_fns" is set and if not, sets it to 290 * the defaults. */ 291 static void err_fns_check(void) 292 { 293 if (err_fns) return; 294 295 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 296 if (!err_fns) 297 err_fns = &err_defaults; 298 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 299 } 300 301 /* API functions to get or set the underlying ERR functions. */ 302 303 const ERR_FNS *ERR_get_implementation(void) 304 { 305 err_fns_check(); 306 return err_fns; 307 } 308 309 int ERR_set_implementation(const ERR_FNS *fns) 310 { 311 int ret = 0; 312 313 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 314 /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting 315 * an error is there?! */ 316 if (!err_fns) 317 { 318 err_fns = fns; 319 ret = 1; 320 } 321 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 322 return ret; 323 } 324 325 /* These are the callbacks provided to "lh_new()" when creating the LHASH tables 326 * internal to the "err_defaults" implementation. */ 327 328 static unsigned long get_error_values(int inc,int top,const char **file,int *line, 329 const char **data,int *flags); 330 331 /* The internal functions used in the "err_defaults" implementation */ 332 333 static unsigned long err_string_data_hash(const ERR_STRING_DATA *a) 334 { 335 unsigned long ret,l; 336 337 l=a->error; 338 ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); 339 return(ret^ret%19*13); 340 } 341 static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA) 342 343 static int err_string_data_cmp(const ERR_STRING_DATA *a, 344 const ERR_STRING_DATA *b) 345 { 346 return (int)(a->error - b->error); 347 } 348 static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA) 349 350 static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create) 351 { 352 LHASH_OF(ERR_STRING_DATA) *ret = NULL; 353 354 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 355 if (!int_error_hash && create) 356 { 357 CRYPTO_push_info("int_err_get (err.c)"); 358 int_error_hash = lh_ERR_STRING_DATA_new(); 359 CRYPTO_pop_info(); 360 } 361 if (int_error_hash) 362 ret = int_error_hash; 363 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 364 365 return ret; 366 } 367 368 static void int_err_del(void) 369 { 370 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 371 if (int_error_hash) 372 { 373 lh_ERR_STRING_DATA_free(int_error_hash); 374 int_error_hash = NULL; 375 } 376 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 377 } 378 379 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) 380 { 381 ERR_STRING_DATA *p; 382 LHASH_OF(ERR_STRING_DATA) *hash; 383 384 err_fns_check(); 385 hash = ERRFN(err_get)(0); 386 if (!hash) 387 return NULL; 388 389 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 390 p = lh_ERR_STRING_DATA_retrieve(hash, d); 391 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 392 393 return p; 394 } 395 396 static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) 397 { 398 ERR_STRING_DATA *p; 399 LHASH_OF(ERR_STRING_DATA) *hash; 400 401 err_fns_check(); 402 hash = ERRFN(err_get)(1); 403 if (!hash) 404 return NULL; 405 406 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 407 p = lh_ERR_STRING_DATA_insert(hash, d); 408 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 409 410 return p; 411 } 412 413 static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) 414 { 415 ERR_STRING_DATA *p; 416 LHASH_OF(ERR_STRING_DATA) *hash; 417 418 err_fns_check(); 419 hash = ERRFN(err_get)(0); 420 if (!hash) 421 return NULL; 422 423 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 424 p = lh_ERR_STRING_DATA_delete(hash, d); 425 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 426 427 return p; 428 } 429 430 static unsigned long err_state_hash(const ERR_STATE *a) 431 { 432 return CRYPTO_THREADID_hash(&a->tid) * 13; 433 } 434 static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) 435 436 static int err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) 437 { 438 return CRYPTO_THREADID_cmp(&a->tid, &b->tid); 439 } 440 static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) 441 442 static LHASH_OF(ERR_STATE) *int_thread_get(int create) 443 { 444 LHASH_OF(ERR_STATE) *ret = NULL; 445 446 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 447 if (!int_thread_hash && create) 448 { 449 CRYPTO_push_info("int_thread_get (err.c)"); 450 int_thread_hash = lh_ERR_STATE_new(); 451 CRYPTO_pop_info(); 452 } 453 if (int_thread_hash) 454 { 455 int_thread_hash_references++; 456 ret = int_thread_hash; 457 } 458 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 459 return ret; 460 } 461 462 static void int_thread_release(LHASH_OF(ERR_STATE) **hash) 463 { 464 int i; 465 466 if (hash == NULL || *hash == NULL) 467 return; 468 469 i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); 470 471 #ifdef REF_PRINT 472 fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR"); 473 #endif 474 if (i > 0) return; 475 #ifdef REF_CHECK 476 if (i < 0) 477 { 478 fprintf(stderr,"int_thread_release, bad reference count\n"); 479 abort(); /* ok */ 480 } 481 #endif 482 *hash = NULL; 483 } 484 485 static ERR_STATE *int_thread_get_item(const ERR_STATE *d) 486 { 487 ERR_STATE *p; 488 LHASH_OF(ERR_STATE) *hash; 489 490 err_fns_check(); 491 hash = ERRFN(thread_get)(0); 492 if (!hash) 493 return NULL; 494 495 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 496 p = lh_ERR_STATE_retrieve(hash, d); 497 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 498 499 ERRFN(thread_release)(&hash); 500 return p; 501 } 502 503 static ERR_STATE *int_thread_set_item(ERR_STATE *d) 504 { 505 ERR_STATE *p; 506 LHASH_OF(ERR_STATE) *hash; 507 508 err_fns_check(); 509 hash = ERRFN(thread_get)(1); 510 if (!hash) 511 return NULL; 512 513 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 514 p = lh_ERR_STATE_insert(hash, d); 515 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 516 517 ERRFN(thread_release)(&hash); 518 return p; 519 } 520 521 static void int_thread_del_item(const ERR_STATE *d) 522 { 523 ERR_STATE *p; 524 LHASH_OF(ERR_STATE) *hash; 525 526 err_fns_check(); 527 hash = ERRFN(thread_get)(0); 528 if (!hash) 529 return; 530 531 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 532 p = lh_ERR_STATE_delete(hash, d); 533 /* make sure we don't leak memory */ 534 if (int_thread_hash_references == 1 535 && int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) 536 { 537 lh_ERR_STATE_free(int_thread_hash); 538 int_thread_hash = NULL; 539 } 540 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 541 542 ERRFN(thread_release)(&hash); 543 if (p) 544 ERR_STATE_free(p); 545 } 546 547 static int int_err_get_next_lib(void) 548 { 549 int ret; 550 551 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 552 ret = int_err_library_number++; 553 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 554 555 return ret; 556 } 557 558 559 #ifndef OPENSSL_NO_ERR 560 #define NUM_SYS_STR_REASONS 127 561 #define LEN_SYS_STR_REASON 32 562 563 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 564 /* SYS_str_reasons is filled with copies of strerror() results at 565 * initialization. 566 * 'errno' values up to 127 should cover all usual errors, 567 * others will be displayed numerically by ERR_error_string. 568 * It is crucial that we have something for each reason code 569 * that occurs in ERR_str_reasons, or bogus reason strings 570 * will be returned for SYSerr(), which always gets an errno 571 * value and never one of those 'standard' reason codes. */ 572 573 static void build_SYS_str_reasons(void) 574 { 575 /* OPENSSL_malloc cannot be used here, use static storage instead */ 576 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 577 int i; 578 static int init = 1; 579 580 CRYPTO_r_lock(CRYPTO_LOCK_ERR); 581 if (!init) 582 { 583 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 584 return; 585 } 586 587 CRYPTO_r_unlock(CRYPTO_LOCK_ERR); 588 CRYPTO_w_lock(CRYPTO_LOCK_ERR); 589 if (!init) 590 { 591 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 592 return; 593 } 594 595 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) 596 { 597 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 598 599 str->error = (unsigned long)i; 600 if (str->string == NULL) 601 { 602 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 603 char *src = strerror(i); 604 if (src != NULL) 605 { 606 strncpy(*dest, src, sizeof *dest); 607 (*dest)[sizeof *dest - 1] = '\0'; 608 str->string = *dest; 609 } 610 } 611 if (str->string == NULL) 612 str->string = "unknown"; 613 } 614 615 /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, 616 * as required by ERR_load_strings. */ 617 618 init = 0; 619 620 CRYPTO_w_unlock(CRYPTO_LOCK_ERR); 621 } 622 #endif 623 624 #define err_clear_data(p,i) \ 625 do { \ 626 if (((p)->err_data[i] != NULL) && \ 627 (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ 628 { \ 629 OPENSSL_free((p)->err_data[i]); \ 630 (p)->err_data[i]=NULL; \ 631 } \ 632 (p)->err_data_flags[i]=0; \ 633 } while(0) 634 635 #define err_clear(p,i) \ 636 do { \ 637 (p)->err_flags[i]=0; \ 638 (p)->err_buffer[i]=0; \ 639 err_clear_data(p,i); \ 640 (p)->err_file[i]=NULL; \ 641 (p)->err_line[i]= -1; \ 642 } while(0) 643 644 static void ERR_STATE_free(ERR_STATE *s) 645 { 646 int i; 647 648 if (s == NULL) 649 return; 650 651 for (i=0; i<ERR_NUM_ERRORS; i++) 652 { 653 err_clear_data(s,i); 654 } 655 OPENSSL_free(s); 656 } 657 658 void ERR_load_ERR_strings(void) 659 { 660 err_fns_check(); 661 #ifndef OPENSSL_NO_ERR 662 err_load_strings(0,ERR_str_libraries); 663 err_load_strings(0,ERR_str_reasons); 664 err_load_strings(ERR_LIB_SYS,ERR_str_functs); 665 build_SYS_str_reasons(); 666 err_load_strings(ERR_LIB_SYS,SYS_str_reasons); 667 #endif 668 } 669 670 static void err_load_strings(int lib, ERR_STRING_DATA *str) 671 { 672 while (str->error) 673 { 674 if (lib) 675 str->error|=ERR_PACK(lib,0,0); 676 ERRFN(err_set_item)(str); 677 str++; 678 } 679 } 680 681 void ERR_load_strings(int lib, ERR_STRING_DATA *str) 682 { 683 ERR_load_ERR_strings(); 684 err_load_strings(lib, str); 685 } 686 687 void ERR_unload_strings(int lib, ERR_STRING_DATA *str) 688 { 689 while (str->error) 690 { 691 if (lib) 692 str->error|=ERR_PACK(lib,0,0); 693 ERRFN(err_del_item)(str); 694 str++; 695 } 696 } 697 698 void ERR_free_strings(void) 699 { 700 err_fns_check(); 701 ERRFN(err_del)(); 702 } 703 704 /********************************************************/ 705 706 void ERR_put_error(int lib, int func, int reason, const char *file, 707 int line) 708 { 709 ERR_STATE *es; 710 711 #ifdef _OSD_POSIX 712 /* In the BS2000-OSD POSIX subsystem, the compiler generates 713 * path names in the form "*POSIX(/etc/passwd)". 714 * This dirty hack strips them to something sensible. 715 * @@@ We shouldn't modify a const string, though. 716 */ 717 if (strncmp(file,"*POSIX(", sizeof("*POSIX(")-1) == 0) { 718 char *end; 719 720 /* Skip the "*POSIX(" prefix */ 721 file += sizeof("*POSIX(")-1; 722 end = &file[strlen(file)-1]; 723 if (*end == ')') 724 *end = '\0'; 725 /* Optional: use the basename of the path only. */ 726 if ((end = strrchr(file, '/')) != NULL) 727 file = &end[1]; 728 } 729 #endif 730 es=ERR_get_state(); 731 732 es->top=(es->top+1)%ERR_NUM_ERRORS; 733 if (es->top == es->bottom) 734 es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; 735 es->err_flags[es->top]=0; 736 es->err_buffer[es->top]=ERR_PACK(lib,func,reason); 737 es->err_file[es->top]=file; 738 es->err_line[es->top]=line; 739 err_clear_data(es,es->top); 740 } 741 742 void ERR_clear_error(void) 743 { 744 int i; 745 ERR_STATE *es; 746 747 es=ERR_get_state(); 748 749 for (i=0; i<ERR_NUM_ERRORS; i++) 750 { 751 err_clear(es,i); 752 } 753 es->top=es->bottom=0; 754 } 755 756 757 unsigned long ERR_get_error(void) 758 { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); } 759 760 unsigned long ERR_get_error_line(const char **file, 761 int *line) 762 { return(get_error_values(1,0,file,line,NULL,NULL)); } 763 764 unsigned long ERR_get_error_line_data(const char **file, int *line, 765 const char **data, int *flags) 766 { return(get_error_values(1,0,file,line,data,flags)); } 767 768 769 unsigned long ERR_peek_error(void) 770 { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); } 771 772 unsigned long ERR_peek_error_line(const char **file, int *line) 773 { return(get_error_values(0,0,file,line,NULL,NULL)); } 774 775 unsigned long ERR_peek_error_line_data(const char **file, int *line, 776 const char **data, int *flags) 777 { return(get_error_values(0,0,file,line,data,flags)); } 778 779 780 unsigned long ERR_peek_last_error(void) 781 { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); } 782 783 unsigned long ERR_peek_last_error_line(const char **file, int *line) 784 { return(get_error_values(0,1,file,line,NULL,NULL)); } 785 786 unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 787 const char **data, int *flags) 788 { return(get_error_values(0,1,file,line,data,flags)); } 789 790 791 static unsigned long get_error_values(int inc, int top, const char **file, int *line, 792 const char **data, int *flags) 793 { 794 int i=0; 795 ERR_STATE *es; 796 unsigned long ret; 797 798 es=ERR_get_state(); 799 800 if (inc && top) 801 { 802 if (file) *file = ""; 803 if (line) *line = 0; 804 if (data) *data = ""; 805 if (flags) *flags = 0; 806 807 return ERR_R_INTERNAL_ERROR; 808 } 809 810 if (es->bottom == es->top) return 0; 811 if (top) 812 i=es->top; /* last error */ 813 else 814 i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */ 815 816 ret=es->err_buffer[i]; 817 if (inc) 818 { 819 es->bottom=i; 820 es->err_buffer[i]=0; 821 } 822 823 if ((file != NULL) && (line != NULL)) 824 { 825 if (es->err_file[i] == NULL) 826 { 827 *file="NA"; 828 if (line != NULL) *line=0; 829 } 830 else 831 { 832 *file=es->err_file[i]; 833 if (line != NULL) *line=es->err_line[i]; 834 } 835 } 836 837 if (data == NULL) 838 { 839 if (inc) 840 { 841 err_clear_data(es, i); 842 } 843 } 844 else 845 { 846 if (es->err_data[i] == NULL) 847 { 848 *data=""; 849 if (flags != NULL) *flags=0; 850 } 851 else 852 { 853 *data=es->err_data[i]; 854 if (flags != NULL) *flags=es->err_data_flags[i]; 855 } 856 } 857 return ret; 858 } 859 860 void ERR_error_string_n(unsigned long e, char *buf, size_t len) 861 { 862 char lsbuf[64], fsbuf[64], rsbuf[64]; 863 const char *ls,*fs,*rs; 864 unsigned long l,f,r; 865 866 l=ERR_GET_LIB(e); 867 f=ERR_GET_FUNC(e); 868 r=ERR_GET_REASON(e); 869 870 ls=ERR_lib_error_string(e); 871 fs=ERR_func_error_string(e); 872 rs=ERR_reason_error_string(e); 873 874 if (ls == NULL) 875 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); 876 if (fs == NULL) 877 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); 878 if (rs == NULL) 879 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); 880 881 BIO_snprintf(buf, len,"error:%08lX:%s:%s:%s", e, ls?ls:lsbuf, 882 fs?fs:fsbuf, rs?rs:rsbuf); 883 if (strlen(buf) == len-1) 884 { 885 /* output may be truncated; make sure we always have 5 886 * colon-separated fields, i.e. 4 colons ... */ 887 #define NUM_COLONS 4 888 if (len > NUM_COLONS) /* ... if possible */ 889 { 890 int i; 891 char *s = buf; 892 893 for (i = 0; i < NUM_COLONS; i++) 894 { 895 char *colon = strchr(s, ':'); 896 if (colon == NULL || colon > &buf[len-1] - NUM_COLONS + i) 897 { 898 /* set colon no. i at last possible position 899 * (buf[len-1] is the terminating 0)*/ 900 colon = &buf[len-1] - NUM_COLONS + i; 901 *colon = ':'; 902 } 903 s = colon + 1; 904 } 905 } 906 } 907 } 908 909 /* BAD for multi-threading: uses a local buffer if ret == NULL */ 910 /* ERR_error_string_n should be used instead for ret != NULL 911 * as ERR_error_string cannot know how large the buffer is */ 912 char *ERR_error_string(unsigned long e, char *ret) 913 { 914 static char buf[256]; 915 916 if (ret == NULL) ret=buf; 917 ERR_error_string_n(e, ret, 256); 918 919 return ret; 920 } 921 922 LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void) 923 { 924 err_fns_check(); 925 return ERRFN(err_get)(0); 926 } 927 928 LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void) 929 { 930 err_fns_check(); 931 return ERRFN(thread_get)(0); 932 } 933 934 void ERR_release_err_state_table(LHASH_OF(ERR_STATE) **hash) 935 { 936 err_fns_check(); 937 ERRFN(thread_release)(hash); 938 } 939 940 const char *ERR_lib_error_string(unsigned long e) 941 { 942 ERR_STRING_DATA d,*p; 943 unsigned long l; 944 945 err_fns_check(); 946 l=ERR_GET_LIB(e); 947 d.error=ERR_PACK(l,0,0); 948 p=ERRFN(err_get_item)(&d); 949 return((p == NULL)?NULL:p->string); 950 } 951 952 const char *ERR_func_error_string(unsigned long e) 953 { 954 ERR_STRING_DATA d,*p; 955 unsigned long l,f; 956 957 err_fns_check(); 958 l=ERR_GET_LIB(e); 959 f=ERR_GET_FUNC(e); 960 d.error=ERR_PACK(l,f,0); 961 p=ERRFN(err_get_item)(&d); 962 return((p == NULL)?NULL:p->string); 963 } 964 965 const char *ERR_reason_error_string(unsigned long e) 966 { 967 ERR_STRING_DATA d,*p=NULL; 968 unsigned long l,r; 969 970 err_fns_check(); 971 l=ERR_GET_LIB(e); 972 r=ERR_GET_REASON(e); 973 d.error=ERR_PACK(l,0,r); 974 p=ERRFN(err_get_item)(&d); 975 if (!p) 976 { 977 d.error=ERR_PACK(0,0,r); 978 p=ERRFN(err_get_item)(&d); 979 } 980 return((p == NULL)?NULL:p->string); 981 } 982 983 void ERR_remove_thread_state(const CRYPTO_THREADID *id) 984 { 985 ERR_STATE tmp; 986 987 if (id) 988 CRYPTO_THREADID_cpy(&tmp.tid, id); 989 else 990 CRYPTO_THREADID_current(&tmp.tid); 991 err_fns_check(); 992 /* thread_del_item automatically destroys the LHASH if the number of 993 * items reaches zero. */ 994 ERRFN(thread_del_item)(&tmp); 995 } 996 997 #ifndef OPENSSL_NO_DEPRECATED 998 void ERR_remove_state(unsigned long pid) 999 { 1000 ERR_remove_thread_state(NULL); 1001 } 1002 #endif 1003 1004 ERR_STATE *ERR_get_state(void) 1005 { 1006 static ERR_STATE fallback; 1007 ERR_STATE *ret,tmp,*tmpp=NULL; 1008 int i; 1009 CRYPTO_THREADID tid; 1010 1011 err_fns_check(); 1012 CRYPTO_THREADID_current(&tid); 1013 CRYPTO_THREADID_cpy(&tmp.tid, &tid); 1014 ret=ERRFN(thread_get_item)(&tmp); 1015 1016 /* ret == the error state, if NULL, make a new one */ 1017 if (ret == NULL) 1018 { 1019 ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); 1020 if (ret == NULL) return(&fallback); 1021 CRYPTO_THREADID_cpy(&ret->tid, &tid); 1022 ret->top=0; 1023 ret->bottom=0; 1024 for (i=0; i<ERR_NUM_ERRORS; i++) 1025 { 1026 ret->err_data[i]=NULL; 1027 ret->err_data_flags[i]=0; 1028 } 1029 tmpp = ERRFN(thread_set_item)(ret); 1030 /* To check if insertion failed, do a get. */ 1031 if (ERRFN(thread_get_item)(ret) != ret) 1032 { 1033 ERR_STATE_free(ret); /* could not insert it */ 1034 return(&fallback); 1035 } 1036 /* If a race occured in this function and we came second, tmpp 1037 * is the first one that we just replaced. */ 1038 if (tmpp) 1039 ERR_STATE_free(tmpp); 1040 } 1041 return ret; 1042 } 1043 1044 int ERR_get_next_error_library(void) 1045 { 1046 err_fns_check(); 1047 return ERRFN(get_next_lib)(); 1048 } 1049 1050 void ERR_set_error_data(char *data, int flags) 1051 { 1052 ERR_STATE *es; 1053 int i; 1054 1055 es=ERR_get_state(); 1056 1057 i=es->top; 1058 if (i == 0) 1059 i=ERR_NUM_ERRORS-1; 1060 1061 err_clear_data(es,i); 1062 es->err_data[i]=data; 1063 es->err_data_flags[i]=flags; 1064 } 1065 1066 void ERR_add_error_data(int num, ...) 1067 { 1068 va_list args; 1069 int i,n,s; 1070 char *str,*p,*a; 1071 1072 s=80; 1073 str=OPENSSL_malloc(s+1); 1074 if (str == NULL) return; 1075 str[0]='\0'; 1076 1077 va_start(args, num); 1078 n=0; 1079 for (i=0; i<num; i++) 1080 { 1081 a=va_arg(args, char*); 1082 /* ignore NULLs, thanks to Bob Beck <beck (at) obtuse.com> */ 1083 if (a != NULL) 1084 { 1085 n+=strlen(a); 1086 if (n > s) 1087 { 1088 s=n+20; 1089 p=OPENSSL_realloc(str,s+1); 1090 if (p == NULL) 1091 { 1092 OPENSSL_free(str); 1093 goto err; 1094 } 1095 else 1096 str=p; 1097 } 1098 BUF_strlcat(str,a,(size_t)s+1); 1099 } 1100 } 1101 ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); 1102 1103 err: 1104 va_end(args); 1105 } 1106 1107 int ERR_set_mark(void) 1108 { 1109 ERR_STATE *es; 1110 1111 es=ERR_get_state(); 1112 1113 if (es->bottom == es->top) return 0; 1114 es->err_flags[es->top]|=ERR_FLAG_MARK; 1115 return 1; 1116 } 1117 1118 int ERR_pop_to_mark(void) 1119 { 1120 ERR_STATE *es; 1121 1122 es=ERR_get_state(); 1123 1124 while(es->bottom != es->top 1125 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) 1126 { 1127 err_clear(es,es->top); 1128 es->top-=1; 1129 if (es->top == -1) es->top=ERR_NUM_ERRORS-1; 1130 } 1131 1132 if (es->bottom == es->top) return 0; 1133 es->err_flags[es->top]&=~ERR_FLAG_MARK; 1134 return 1; 1135 } 1136
