1 /* 2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <stdio.h> 11 #include <stdarg.h> 12 #include <string.h> 13 #include "internal/cryptlib_int.h" 14 #include "internal/err.h" 15 #include "internal/err_int.h" 16 #include <openssl/err.h> 17 #include <openssl/crypto.h> 18 #include <openssl/buffer.h> 19 #include <openssl/bio.h> 20 #include <openssl/opensslconf.h> 21 #include "internal/thread_once.h" 22 23 static int err_load_strings(const ERR_STRING_DATA *str); 24 25 static void ERR_STATE_free(ERR_STATE *s); 26 #ifndef OPENSSL_NO_ERR 27 static ERR_STRING_DATA ERR_str_libraries[] = { 28 {ERR_PACK(ERR_LIB_NONE, 0, 0), "unknown library"}, 29 {ERR_PACK(ERR_LIB_SYS, 0, 0), "system library"}, 30 {ERR_PACK(ERR_LIB_BN, 0, 0), "bignum routines"}, 31 {ERR_PACK(ERR_LIB_RSA, 0, 0), "rsa routines"}, 32 {ERR_PACK(ERR_LIB_DH, 0, 0), "Diffie-Hellman routines"}, 33 {ERR_PACK(ERR_LIB_EVP, 0, 0), "digital envelope routines"}, 34 {ERR_PACK(ERR_LIB_BUF, 0, 0), "memory buffer routines"}, 35 {ERR_PACK(ERR_LIB_OBJ, 0, 0), "object identifier routines"}, 36 {ERR_PACK(ERR_LIB_PEM, 0, 0), "PEM routines"}, 37 {ERR_PACK(ERR_LIB_DSA, 0, 0), "dsa routines"}, 38 {ERR_PACK(ERR_LIB_X509, 0, 0), "x509 certificate routines"}, 39 {ERR_PACK(ERR_LIB_ASN1, 0, 0), "asn1 encoding routines"}, 40 {ERR_PACK(ERR_LIB_CONF, 0, 0), "configuration file routines"}, 41 {ERR_PACK(ERR_LIB_CRYPTO, 0, 0), "common libcrypto routines"}, 42 {ERR_PACK(ERR_LIB_EC, 0, 0), "elliptic curve routines"}, 43 {ERR_PACK(ERR_LIB_ECDSA, 0, 0), "ECDSA routines"}, 44 {ERR_PACK(ERR_LIB_ECDH, 0, 0), "ECDH routines"}, 45 {ERR_PACK(ERR_LIB_SSL, 0, 0), "SSL routines"}, 46 {ERR_PACK(ERR_LIB_BIO, 0, 0), "BIO routines"}, 47 {ERR_PACK(ERR_LIB_PKCS7, 0, 0), "PKCS7 routines"}, 48 {ERR_PACK(ERR_LIB_X509V3, 0, 0), "X509 V3 routines"}, 49 {ERR_PACK(ERR_LIB_PKCS12, 0, 0), "PKCS12 routines"}, 50 {ERR_PACK(ERR_LIB_RAND, 0, 0), "random number generator"}, 51 {ERR_PACK(ERR_LIB_DSO, 0, 0), "DSO support routines"}, 52 {ERR_PACK(ERR_LIB_TS, 0, 0), "time stamp routines"}, 53 {ERR_PACK(ERR_LIB_ENGINE, 0, 0), "engine routines"}, 54 {ERR_PACK(ERR_LIB_OCSP, 0, 0), "OCSP routines"}, 55 {ERR_PACK(ERR_LIB_UI, 0, 0), "UI routines"}, 56 {ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"}, 57 {ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"}, 58 {ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"}, 59 {ERR_PACK(ERR_LIB_CT, 0, 0), "CT routines"}, 60 {ERR_PACK(ERR_LIB_ASYNC, 0, 0), "ASYNC routines"}, 61 {ERR_PACK(ERR_LIB_KDF, 0, 0), "KDF routines"}, 62 {ERR_PACK(ERR_LIB_OSSL_STORE, 0, 0), "STORE routines"}, 63 {ERR_PACK(ERR_LIB_SM2, 0, 0), "SM2 routines"}, 64 {0, NULL}, 65 }; 66 67 static ERR_STRING_DATA ERR_str_functs[] = { 68 {ERR_PACK(0, SYS_F_FOPEN, 0), "fopen"}, 69 {ERR_PACK(0, SYS_F_CONNECT, 0), "connect"}, 70 {ERR_PACK(0, SYS_F_GETSERVBYNAME, 0), "getservbyname"}, 71 {ERR_PACK(0, SYS_F_SOCKET, 0), "socket"}, 72 {ERR_PACK(0, SYS_F_IOCTLSOCKET, 0), "ioctlsocket"}, 73 {ERR_PACK(0, SYS_F_BIND, 0), "bind"}, 74 {ERR_PACK(0, SYS_F_LISTEN, 0), "listen"}, 75 {ERR_PACK(0, SYS_F_ACCEPT, 0), "accept"}, 76 # ifdef OPENSSL_SYS_WINDOWS 77 {ERR_PACK(0, SYS_F_WSASTARTUP, 0), "WSAstartup"}, 78 # endif 79 {ERR_PACK(0, SYS_F_OPENDIR, 0), "opendir"}, 80 {ERR_PACK(0, SYS_F_FREAD, 0), "fread"}, 81 {ERR_PACK(0, SYS_F_GETADDRINFO, 0), "getaddrinfo"}, 82 {ERR_PACK(0, SYS_F_GETNAMEINFO, 0), "getnameinfo"}, 83 {ERR_PACK(0, SYS_F_SETSOCKOPT, 0), "setsockopt"}, 84 {ERR_PACK(0, SYS_F_GETSOCKOPT, 0), "getsockopt"}, 85 {ERR_PACK(0, SYS_F_GETSOCKNAME, 0), "getsockname"}, 86 {ERR_PACK(0, SYS_F_GETHOSTBYNAME, 0), "gethostbyname"}, 87 {ERR_PACK(0, SYS_F_FFLUSH, 0), "fflush"}, 88 {ERR_PACK(0, SYS_F_OPEN, 0), "open"}, 89 {ERR_PACK(0, SYS_F_CLOSE, 0), "close"}, 90 {ERR_PACK(0, SYS_F_IOCTL, 0), "ioctl"}, 91 {ERR_PACK(0, SYS_F_STAT, 0), "stat"}, 92 {ERR_PACK(0, SYS_F_FCNTL, 0), "fcntl"}, 93 {ERR_PACK(0, SYS_F_FSTAT, 0), "fstat"}, 94 {0, NULL}, 95 }; 96 97 static ERR_STRING_DATA ERR_str_reasons[] = { 98 {ERR_R_SYS_LIB, "system lib"}, 99 {ERR_R_BN_LIB, "BN lib"}, 100 {ERR_R_RSA_LIB, "RSA lib"}, 101 {ERR_R_DH_LIB, "DH lib"}, 102 {ERR_R_EVP_LIB, "EVP lib"}, 103 {ERR_R_BUF_LIB, "BUF lib"}, 104 {ERR_R_OBJ_LIB, "OBJ lib"}, 105 {ERR_R_PEM_LIB, "PEM lib"}, 106 {ERR_R_DSA_LIB, "DSA lib"}, 107 {ERR_R_X509_LIB, "X509 lib"}, 108 {ERR_R_ASN1_LIB, "ASN1 lib"}, 109 {ERR_R_EC_LIB, "EC lib"}, 110 {ERR_R_BIO_LIB, "BIO lib"}, 111 {ERR_R_PKCS7_LIB, "PKCS7 lib"}, 112 {ERR_R_X509V3_LIB, "X509V3 lib"}, 113 {ERR_R_ENGINE_LIB, "ENGINE lib"}, 114 {ERR_R_UI_LIB, "UI lib"}, 115 {ERR_R_OSSL_STORE_LIB, "STORE lib"}, 116 {ERR_R_ECDSA_LIB, "ECDSA lib"}, 117 118 {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"}, 119 {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"}, 120 121 {ERR_R_FATAL, "fatal"}, 122 {ERR_R_MALLOC_FAILURE, "malloc failure"}, 123 {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, 124 "called a function you should not call"}, 125 {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"}, 126 {ERR_R_INTERNAL_ERROR, "internal error"}, 127 {ERR_R_DISABLED, "called a function that was disabled at compile-time"}, 128 {ERR_R_INIT_FAIL, "init fail"}, 129 {ERR_R_OPERATION_FAIL, "operation fail"}, 130 131 {0, NULL}, 132 }; 133 #endif 134 135 static CRYPTO_ONCE err_init = CRYPTO_ONCE_STATIC_INIT; 136 static int set_err_thread_local; 137 static CRYPTO_THREAD_LOCAL err_thread_local; 138 139 static CRYPTO_ONCE err_string_init = CRYPTO_ONCE_STATIC_INIT; 140 static CRYPTO_RWLOCK *err_string_lock; 141 142 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); 143 144 /* 145 * The internal state 146 */ 147 148 static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; 149 static int int_err_library_number = ERR_LIB_USER; 150 151 static unsigned long get_error_values(int inc, int top, const char **file, 152 int *line, const char **data, 153 int *flags); 154 155 static unsigned long err_string_data_hash(const ERR_STRING_DATA *a) 156 { 157 unsigned long ret, l; 158 159 l = a->error; 160 ret = l ^ ERR_GET_LIB(l) ^ ERR_GET_FUNC(l); 161 return (ret ^ ret % 19 * 13); 162 } 163 164 static int err_string_data_cmp(const ERR_STRING_DATA *a, 165 const ERR_STRING_DATA *b) 166 { 167 if (a->error == b->error) 168 return 0; 169 return a->error > b->error ? 1 : -1; 170 } 171 172 static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) 173 { 174 ERR_STRING_DATA *p = NULL; 175 176 CRYPTO_THREAD_read_lock(err_string_lock); 177 p = lh_ERR_STRING_DATA_retrieve(int_error_hash, d); 178 CRYPTO_THREAD_unlock(err_string_lock); 179 180 return p; 181 } 182 183 #ifndef OPENSSL_NO_ERR 184 # define NUM_SYS_STR_REASONS 127 185 # define LEN_SYS_STR_REASON 32 186 187 static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; 188 /* 189 * SYS_str_reasons is filled with copies of strerror() results at 190 * initialization. 'errno' values up to 127 should cover all usual errors, 191 * others will be displayed numerically by ERR_error_string. It is crucial 192 * that we have something for each reason code that occurs in 193 * ERR_str_reasons, or bogus reason strings will be returned for SYSerr(), 194 * which always gets an errno value and never one of those 'standard' reason 195 * codes. 196 */ 197 198 static void build_SYS_str_reasons(void) 199 { 200 /* OPENSSL_malloc cannot be used here, use static storage instead */ 201 static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; 202 static int init = 1; 203 int i; 204 205 CRYPTO_THREAD_write_lock(err_string_lock); 206 if (!init) { 207 CRYPTO_THREAD_unlock(err_string_lock); 208 return; 209 } 210 211 for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { 212 ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; 213 214 str->error = ERR_PACK(ERR_LIB_SYS, 0, i); 215 if (str->string == NULL) { 216 char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); 217 if (openssl_strerror_r(i, *dest, sizeof(*dest))) 218 str->string = *dest; 219 } 220 if (str->string == NULL) 221 str->string = "unknown"; 222 } 223 224 /* 225 * Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as 226 * required by ERR_load_strings. 227 */ 228 229 init = 0; 230 231 CRYPTO_THREAD_unlock(err_string_lock); 232 err_load_strings(SYS_str_reasons); 233 } 234 #endif 235 236 #define err_clear_data(p, i) \ 237 do { \ 238 if ((p)->err_data_flags[i] & ERR_TXT_MALLOCED) {\ 239 OPENSSL_free((p)->err_data[i]); \ 240 (p)->err_data[i] = NULL; \ 241 } \ 242 (p)->err_data_flags[i] = 0; \ 243 } while (0) 244 245 #define err_clear(p, i) \ 246 do { \ 247 err_clear_data(p, i); \ 248 (p)->err_flags[i] = 0; \ 249 (p)->err_buffer[i] = 0; \ 250 (p)->err_file[i] = NULL; \ 251 (p)->err_line[i] = -1; \ 252 } while (0) 253 254 static void ERR_STATE_free(ERR_STATE *s) 255 { 256 int i; 257 258 if (s == NULL) 259 return; 260 for (i = 0; i < ERR_NUM_ERRORS; i++) { 261 err_clear_data(s, i); 262 } 263 OPENSSL_free(s); 264 } 265 266 DEFINE_RUN_ONCE_STATIC(do_err_strings_init) 267 { 268 if (!OPENSSL_init_crypto(0, NULL)) 269 return 0; 270 err_string_lock = CRYPTO_THREAD_lock_new(); 271 if (err_string_lock == NULL) 272 return 0; 273 int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash, 274 err_string_data_cmp); 275 if (int_error_hash == NULL) { 276 CRYPTO_THREAD_lock_free(err_string_lock); 277 err_string_lock = NULL; 278 return 0; 279 } 280 return 1; 281 } 282 283 void err_cleanup(void) 284 { 285 if (set_err_thread_local != 0) 286 CRYPTO_THREAD_cleanup_local(&err_thread_local); 287 CRYPTO_THREAD_lock_free(err_string_lock); 288 err_string_lock = NULL; 289 lh_ERR_STRING_DATA_free(int_error_hash); 290 int_error_hash = NULL; 291 } 292 293 /* 294 * Legacy; pack in the library. 295 */ 296 static void err_patch(int lib, ERR_STRING_DATA *str) 297 { 298 unsigned long plib = ERR_PACK(lib, 0, 0); 299 300 for (; str->error != 0; str++) 301 str->error |= plib; 302 } 303 304 /* 305 * Hash in |str| error strings. Assumes the URN_ONCE was done. 306 */ 307 static int err_load_strings(const ERR_STRING_DATA *str) 308 { 309 CRYPTO_THREAD_write_lock(err_string_lock); 310 for (; str->error; str++) 311 (void)lh_ERR_STRING_DATA_insert(int_error_hash, 312 (ERR_STRING_DATA *)str); 313 CRYPTO_THREAD_unlock(err_string_lock); 314 return 1; 315 } 316 317 int ERR_load_ERR_strings(void) 318 { 319 #ifndef OPENSSL_NO_ERR 320 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) 321 return 0; 322 323 err_load_strings(ERR_str_libraries); 324 err_load_strings(ERR_str_reasons); 325 err_patch(ERR_LIB_SYS, ERR_str_functs); 326 err_load_strings(ERR_str_functs); 327 build_SYS_str_reasons(); 328 #endif 329 return 1; 330 } 331 332 int ERR_load_strings(int lib, ERR_STRING_DATA *str) 333 { 334 if (ERR_load_ERR_strings() == 0) 335 return 0; 336 337 err_patch(lib, str); 338 err_load_strings(str); 339 return 1; 340 } 341 342 int ERR_load_strings_const(const ERR_STRING_DATA *str) 343 { 344 if (ERR_load_ERR_strings() == 0) 345 return 0; 346 err_load_strings(str); 347 return 1; 348 } 349 350 int ERR_unload_strings(int lib, ERR_STRING_DATA *str) 351 { 352 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) 353 return 0; 354 355 CRYPTO_THREAD_write_lock(err_string_lock); 356 /* 357 * We don't need to ERR_PACK the lib, since that was done (to 358 * the table) when it was loaded. 359 */ 360 for (; str->error; str++) 361 (void)lh_ERR_STRING_DATA_delete(int_error_hash, str); 362 CRYPTO_THREAD_unlock(err_string_lock); 363 364 return 1; 365 } 366 367 void err_free_strings_int(void) 368 { 369 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) 370 return; 371 } 372 373 /********************************************************/ 374 375 void ERR_put_error(int lib, int func, int reason, const char *file, int line) 376 { 377 ERR_STATE *es; 378 379 #ifdef _OSD_POSIX 380 /* 381 * In the BS2000-OSD POSIX subsystem, the compiler generates path names 382 * in the form "*POSIX(/etc/passwd)". This dirty hack strips them to 383 * something sensible. @@@ We shouldn't modify a const string, though. 384 */ 385 if (strncmp(file, "*POSIX(", sizeof("*POSIX(") - 1) == 0) { 386 char *end; 387 388 /* Skip the "*POSIX(" prefix */ 389 file += sizeof("*POSIX(") - 1; 390 end = &file[strlen(file) - 1]; 391 if (*end == ')') 392 *end = '\0'; 393 /* Optional: use the basename of the path only. */ 394 if ((end = strrchr(file, '/')) != NULL) 395 file = &end[1]; 396 } 397 #endif 398 es = ERR_get_state(); 399 if (es == NULL) 400 return; 401 402 es->top = (es->top + 1) % ERR_NUM_ERRORS; 403 if (es->top == es->bottom) 404 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; 405 es->err_flags[es->top] = 0; 406 es->err_buffer[es->top] = ERR_PACK(lib, func, reason); 407 es->err_file[es->top] = file; 408 es->err_line[es->top] = line; 409 err_clear_data(es, es->top); 410 } 411 412 void ERR_clear_error(void) 413 { 414 int i; 415 ERR_STATE *es; 416 417 es = ERR_get_state(); 418 if (es == NULL) 419 return; 420 421 for (i = 0; i < ERR_NUM_ERRORS; i++) { 422 err_clear(es, i); 423 } 424 es->top = es->bottom = 0; 425 } 426 427 unsigned long ERR_get_error(void) 428 { 429 return get_error_values(1, 0, NULL, NULL, NULL, NULL); 430 } 431 432 unsigned long ERR_get_error_line(const char **file, int *line) 433 { 434 return get_error_values(1, 0, file, line, NULL, NULL); 435 } 436 437 unsigned long ERR_get_error_line_data(const char **file, int *line, 438 const char **data, int *flags) 439 { 440 return get_error_values(1, 0, file, line, data, flags); 441 } 442 443 unsigned long ERR_peek_error(void) 444 { 445 return get_error_values(0, 0, NULL, NULL, NULL, NULL); 446 } 447 448 unsigned long ERR_peek_error_line(const char **file, int *line) 449 { 450 return get_error_values(0, 0, file, line, NULL, NULL); 451 } 452 453 unsigned long ERR_peek_error_line_data(const char **file, int *line, 454 const char **data, int *flags) 455 { 456 return get_error_values(0, 0, file, line, data, flags); 457 } 458 459 unsigned long ERR_peek_last_error(void) 460 { 461 return get_error_values(0, 1, NULL, NULL, NULL, NULL); 462 } 463 464 unsigned long ERR_peek_last_error_line(const char **file, int *line) 465 { 466 return get_error_values(0, 1, file, line, NULL, NULL); 467 } 468 469 unsigned long ERR_peek_last_error_line_data(const char **file, int *line, 470 const char **data, int *flags) 471 { 472 return get_error_values(0, 1, file, line, data, flags); 473 } 474 475 static unsigned long get_error_values(int inc, int top, const char **file, 476 int *line, const char **data, 477 int *flags) 478 { 479 int i = 0; 480 ERR_STATE *es; 481 unsigned long ret; 482 483 es = ERR_get_state(); 484 if (es == NULL) 485 return 0; 486 487 if (inc && top) { 488 if (file) 489 *file = ""; 490 if (line) 491 *line = 0; 492 if (data) 493 *data = ""; 494 if (flags) 495 *flags = 0; 496 497 return ERR_R_INTERNAL_ERROR; 498 } 499 500 if (es->bottom == es->top) 501 return 0; 502 if (top) 503 i = es->top; /* last error */ 504 else 505 i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */ 506 507 ret = es->err_buffer[i]; 508 if (inc) { 509 es->bottom = i; 510 es->err_buffer[i] = 0; 511 } 512 513 if (file != NULL && line != NULL) { 514 if (es->err_file[i] == NULL) { 515 *file = "NA"; 516 *line = 0; 517 } else { 518 *file = es->err_file[i]; 519 *line = es->err_line[i]; 520 } 521 } 522 523 if (data == NULL) { 524 if (inc) { 525 err_clear_data(es, i); 526 } 527 } else { 528 if (es->err_data[i] == NULL) { 529 *data = ""; 530 if (flags != NULL) 531 *flags = 0; 532 } else { 533 *data = es->err_data[i]; 534 if (flags != NULL) 535 *flags = es->err_data_flags[i]; 536 } 537 } 538 return ret; 539 } 540 541 void ERR_error_string_n(unsigned long e, char *buf, size_t len) 542 { 543 char lsbuf[64], fsbuf[64], rsbuf[64]; 544 const char *ls, *fs, *rs; 545 unsigned long l, f, r; 546 547 if (len == 0) 548 return; 549 550 l = ERR_GET_LIB(e); 551 ls = ERR_lib_error_string(e); 552 if (ls == NULL) { 553 BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); 554 ls = lsbuf; 555 } 556 557 fs = ERR_func_error_string(e); 558 f = ERR_GET_FUNC(e); 559 if (fs == NULL) { 560 BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); 561 fs = fsbuf; 562 } 563 564 rs = ERR_reason_error_string(e); 565 r = ERR_GET_REASON(e); 566 if (rs == NULL) { 567 BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); 568 rs = rsbuf; 569 } 570 571 BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs); 572 if (strlen(buf) == len - 1) { 573 /* Didn't fit; use a minimal format. */ 574 BIO_snprintf(buf, len, "err:%lx:%lx:%lx:%lx", e, l, f, r); 575 } 576 } 577 578 /* 579 * ERR_error_string_n should be used instead for ret != NULL as 580 * ERR_error_string cannot know how large the buffer is 581 */ 582 char *ERR_error_string(unsigned long e, char *ret) 583 { 584 static char buf[256]; 585 586 if (ret == NULL) 587 ret = buf; 588 ERR_error_string_n(e, ret, (int)sizeof(buf)); 589 return ret; 590 } 591 592 const char *ERR_lib_error_string(unsigned long e) 593 { 594 ERR_STRING_DATA d, *p; 595 unsigned long l; 596 597 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) { 598 return NULL; 599 } 600 601 l = ERR_GET_LIB(e); 602 d.error = ERR_PACK(l, 0, 0); 603 p = int_err_get_item(&d); 604 return ((p == NULL) ? NULL : p->string); 605 } 606 607 const char *ERR_func_error_string(unsigned long e) 608 { 609 ERR_STRING_DATA d, *p; 610 unsigned long l, f; 611 612 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) { 613 return NULL; 614 } 615 616 l = ERR_GET_LIB(e); 617 f = ERR_GET_FUNC(e); 618 d.error = ERR_PACK(l, f, 0); 619 p = int_err_get_item(&d); 620 return ((p == NULL) ? NULL : p->string); 621 } 622 623 const char *ERR_reason_error_string(unsigned long e) 624 { 625 ERR_STRING_DATA d, *p = NULL; 626 unsigned long l, r; 627 628 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) { 629 return NULL; 630 } 631 632 l = ERR_GET_LIB(e); 633 r = ERR_GET_REASON(e); 634 d.error = ERR_PACK(l, 0, r); 635 p = int_err_get_item(&d); 636 if (!p) { 637 d.error = ERR_PACK(0, 0, r); 638 p = int_err_get_item(&d); 639 } 640 return ((p == NULL) ? NULL : p->string); 641 } 642 643 void err_delete_thread_state(void) 644 { 645 ERR_STATE *state = CRYPTO_THREAD_get_local(&err_thread_local); 646 if (state == NULL) 647 return; 648 649 CRYPTO_THREAD_set_local(&err_thread_local, NULL); 650 ERR_STATE_free(state); 651 } 652 653 #if OPENSSL_API_COMPAT < 0x10100000L 654 void ERR_remove_thread_state(void *dummy) 655 { 656 } 657 #endif 658 659 #if OPENSSL_API_COMPAT < 0x10000000L 660 void ERR_remove_state(unsigned long pid) 661 { 662 } 663 #endif 664 665 DEFINE_RUN_ONCE_STATIC(err_do_init) 666 { 667 set_err_thread_local = 1; 668 return CRYPTO_THREAD_init_local(&err_thread_local, NULL); 669 } 670 671 ERR_STATE *ERR_get_state(void) 672 { 673 ERR_STATE *state; 674 675 if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL)) 676 return NULL; 677 678 if (!RUN_ONCE(&err_init, err_do_init)) 679 return NULL; 680 681 state = CRYPTO_THREAD_get_local(&err_thread_local); 682 if (state == (ERR_STATE*)-1) 683 return NULL; 684 685 if (state == NULL) { 686 if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1)) 687 return NULL; 688 689 if ((state = OPENSSL_zalloc(sizeof(*state))) == NULL) { 690 CRYPTO_THREAD_set_local(&err_thread_local, NULL); 691 return NULL; 692 } 693 694 if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE) 695 || !CRYPTO_THREAD_set_local(&err_thread_local, state)) { 696 ERR_STATE_free(state); 697 CRYPTO_THREAD_set_local(&err_thread_local, NULL); 698 return NULL; 699 } 700 701 /* Ignore failures from these */ 702 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL); 703 } 704 705 return state; 706 } 707 708 /* 709 * err_shelve_state returns the current thread local error state 710 * and freezes the error module until err_unshelve_state is called. 711 */ 712 int err_shelve_state(void **state) 713 { 714 if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL)) 715 return 0; 716 717 if (!RUN_ONCE(&err_init, err_do_init)) 718 return 0; 719 720 *state = CRYPTO_THREAD_get_local(&err_thread_local); 721 if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1)) 722 return 0; 723 724 return 1; 725 } 726 727 /* 728 * err_unshelve_state restores the error state that was returned 729 * by err_shelve_state previously. 730 */ 731 void err_unshelve_state(void* state) 732 { 733 if (state != (void*)-1) 734 CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)state); 735 } 736 737 int ERR_get_next_error_library(void) 738 { 739 int ret; 740 741 if (!RUN_ONCE(&err_string_init, do_err_strings_init)) 742 return 0; 743 744 CRYPTO_THREAD_write_lock(err_string_lock); 745 ret = int_err_library_number++; 746 CRYPTO_THREAD_unlock(err_string_lock); 747 return ret; 748 } 749 750 void ERR_set_error_data(char *data, int flags) 751 { 752 ERR_STATE *es; 753 int i; 754 755 es = ERR_get_state(); 756 if (es == NULL) 757 return; 758 759 i = es->top; 760 761 err_clear_data(es, i); 762 es->err_data[i] = data; 763 es->err_data_flags[i] = flags; 764 } 765 766 void ERR_add_error_data(int num, ...) 767 { 768 va_list args; 769 va_start(args, num); 770 ERR_add_error_vdata(num, args); 771 va_end(args); 772 } 773 774 void ERR_add_error_vdata(int num, va_list args) 775 { 776 int i, n, s; 777 char *str, *p, *a; 778 779 s = 80; 780 if ((str = OPENSSL_malloc(s + 1)) == NULL) { 781 /* ERRerr(ERR_F_ERR_ADD_ERROR_VDATA, ERR_R_MALLOC_FAILURE); */ 782 return; 783 } 784 str[0] = '\0'; 785 786 n = 0; 787 for (i = 0; i < num; i++) { 788 a = va_arg(args, char *); 789 if (a == NULL) 790 a = "<NULL>"; 791 n += strlen(a); 792 if (n > s) { 793 s = n + 20; 794 p = OPENSSL_realloc(str, s + 1); 795 if (p == NULL) { 796 OPENSSL_free(str); 797 return; 798 } 799 str = p; 800 } 801 OPENSSL_strlcat(str, a, (size_t)s + 1); 802 } 803 ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING); 804 } 805 806 int ERR_set_mark(void) 807 { 808 ERR_STATE *es; 809 810 es = ERR_get_state(); 811 if (es == NULL) 812 return 0; 813 814 if (es->bottom == es->top) 815 return 0; 816 es->err_flags[es->top] |= ERR_FLAG_MARK; 817 return 1; 818 } 819 820 int ERR_pop_to_mark(void) 821 { 822 ERR_STATE *es; 823 824 es = ERR_get_state(); 825 if (es == NULL) 826 return 0; 827 828 while (es->bottom != es->top 829 && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { 830 err_clear(es, es->top); 831 es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1; 832 } 833 834 if (es->bottom == es->top) 835 return 0; 836 es->err_flags[es->top] &= ~ERR_FLAG_MARK; 837 return 1; 838 } 839 840 int ERR_clear_last_mark(void) 841 { 842 ERR_STATE *es; 843 int top; 844 845 es = ERR_get_state(); 846 if (es == NULL) 847 return 0; 848 849 top = es->top; 850 while (es->bottom != top 851 && (es->err_flags[top] & ERR_FLAG_MARK) == 0) { 852 top = top > 0 ? top - 1 : ERR_NUM_ERRORS - 1; 853 } 854 855 if (es->bottom == top) 856 return 0; 857 es->err_flags[top] &= ~ERR_FLAG_MARK; 858 return 1; 859 } 860