1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay (at) cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] 56 */ 57 /* ==================================================================== 58 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. 59 * 60 * Redistribution and use in source and binary forms, with or without 61 * modification, are permitted provided that the following conditions 62 * are met: 63 * 64 * 1. Redistributions of source code must retain the above copyright 65 * notice, this list of conditions and the following disclaimer. 66 * 67 * 2. Redistributions in binary form must reproduce the above copyright 68 * notice, this list of conditions and the following disclaimer in 69 * the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3. All advertising materials mentioning features or use of this 73 * software must display the following acknowledgment: 74 * "This product includes software developed by the OpenSSL Project 75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 76 * 77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 78 * endorse or promote products derived from this software without 79 * prior written permission. For written permission, please contact 80 * openssl-core (at) openssl.org. 81 * 82 * 5. Products derived from this software may not be called "OpenSSL" 83 * nor may "OpenSSL" appear in their names without prior written 84 * permission of the OpenSSL Project. 85 * 86 * 6. Redistributions of any form whatsoever must retain the following 87 * acknowledgment: 88 * "This product includes software developed by the OpenSSL Project 89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 90 * 91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 102 * OF THE POSSIBILITY OF SUCH DAMAGE. 103 * ==================================================================== 104 * 105 * This product includes cryptographic software written by Eric Young 106 * (eay (at) cryptsoft.com). This product includes software written by Tim 107 * Hudson (tjh (at) cryptsoft.com). */ 108 109 #ifndef OPENSSL_HEADER_ERR_H 110 #define OPENSSL_HEADER_ERR_H 111 112 #include <openssl/base.h> 113 #include <openssl/thread.h> 114 #include <openssl/lhash.h> 115 116 #if defined(__cplusplus) 117 extern "C" { 118 #endif 119 120 121 /* Error queue handling functions. 122 * 123 * Errors in OpenSSL are generally signalled by the return value of a function. 124 * When a function fails it may add an entry to a per-thread error queue, 125 * which is managed by the functions in this header. 126 * 127 * Each error contains: 128 * 1) The library (i.e. ec, pem, rsa) which created it. 129 * 2) A function identifier and reason code. 130 * 3) The file and line number of the call that added the error. 131 * 4) A pointer to some error specific data, which may be NULL. 132 * 133 * The library identifier, function identifier and reason code are packed in a 134 * uint32_t and there exist various functions for unpacking it. 135 * 136 * The typical behaviour is that an error will occur deep in a call queue and 137 * that code will push an error onto the error queue. As the error queue 138 * unwinds, other functions will push their own errors. Thus, the "least 139 * recent" error is the most specific and the other errors will provide a 140 * backtrace of sorts. */ 141 142 143 /* Startup and shutdown. */ 144 145 /* ERR_load_crypto_strings initialises the error string hash with builtin 146 * values. If this is not called then the string forms of errors produced by 147 * the functions below will contain numeric identifiers rather than 148 * human-readable strings. */ 149 OPENSSL_EXPORT void ERR_load_crypto_strings(void); 150 151 /* ERR_free_strings frees any internal error values that have been loaded. This 152 * should only be called at process shutdown. */ 153 OPENSSL_EXPORT void ERR_free_strings(void); 154 155 156 /* Reading and formatting errors. */ 157 158 /* ERR_get_error gets the packed error code for the least recent error and 159 * removes that error from the queue. If there are no errors in the queue then 160 * it returns zero. */ 161 OPENSSL_EXPORT uint32_t ERR_get_error(void); 162 163 /* ERR_get_error_line acts like |ERR_get_error|, except that the file and line 164 * number of the call that added the error are also returned. */ 165 OPENSSL_EXPORT uint32_t ERR_get_error_line(const char **file, int *line); 166 167 /* ERR_get_error_line_data acts like |ERR_get_error_line|, but also returns the 168 * error-specific data pointer and flags. The flags are a bitwise-OR of 169 * |ERR_FLAG_*| values. */ 170 OPENSSL_EXPORT uint32_t ERR_get_error_line_data(const char **file, int *line, 171 char **data, int *flags); 172 173 /* The "peek" functions act like the |ERR_get_error| functions, above, but they 174 * do not remove the error from the queue. */ 175 OPENSSL_EXPORT uint32_t ERR_peek_error(void); 176 OPENSSL_EXPORT uint32_t ERR_peek_error_line(const char **file, int *line); 177 OPENSSL_EXPORT uint32_t ERR_peek_error_line_data(const char **file, int *line, 178 const char **data, int *flags); 179 180 /* The "peek last" functions act like the "peek" functions, above, except that 181 * they return the most recent error. */ 182 OPENSSL_EXPORT uint32_t ERR_peek_last_error(void); 183 OPENSSL_EXPORT uint32_t ERR_peek_last_error_line(const char **file, int *line); 184 OPENSSL_EXPORT uint32_t 185 ERR_peek_last_error_line_data(const char **file, int *line, 186 const char **data, int *flags); 187 188 /* ERR_error_string generates a human-readable string representing 189 * |packed_error|, places it at |buf| (which must be at least 190 * ERR_ERROR_STRING_BUF_LEN bytes long) and returns |buf|. If |buf| is NULL, 191 * the error string is placed in a static buffer which is returned. (The static 192 * buffer may be overridden by concurrent calls in other threads so this form 193 * is deprecated.) 194 * 195 * The string will have the following format: 196 * 197 * error:[error code]:[library name]:[function name]:[reason string] 198 * 199 * error code is an 8 digit hexadecimal number; library name, function name 200 * and reason string are ASCII text. 201 * 202 * TODO(fork): remove in favour of |ERR_error_string_n|. */ 203 OPENSSL_EXPORT char *ERR_error_string(uint32_t packed_error, char *buf); 204 #define ERR_ERROR_STRING_BUF_LEN 256 205 206 /* ERR_error_string_n is a variant of |ERR_error_string| that writes at most 207 * len characters (including the terminating NUL) and truncates the string if 208 * necessary. If |len| is greater than zero then |buf| is always NUL 209 * terminated. */ 210 OPENSSL_EXPORT void ERR_error_string_n(uint32_t packed_error, char *buf, 211 size_t len); 212 213 /* ERR_lib_error_string returns a string representation of the library that 214 * generated |packed_error|. */ 215 OPENSSL_EXPORT const char *ERR_lib_error_string(uint32_t packed_error); 216 217 /* ERR_func_error_string returns a string representation of the function that 218 * generated |packed_error|. */ 219 OPENSSL_EXPORT const char *ERR_func_error_string(uint32_t packed_error); 220 221 /* ERR_reason_error_string returns a string representation of the reason for 222 * |packed_error|. */ 223 OPENSSL_EXPORT const char *ERR_reason_error_string(uint32_t packed_error); 224 225 /* ERR_print_errors_callback_t is the type of a function used by 226 * |ERR_print_errors_cb|. It takes a pointer to a human readable string (and 227 * its length) that describes an entry in the error queue. The |ctx| argument 228 * is an opaque pointer given to |ERR_print_errors_cb|. 229 * 230 * It should return one on success or zero on error, which will stop the 231 * iteration over the error queue. */ 232 typedef int (*ERR_print_errors_callback_t)(const char *str, size_t len, 233 void *ctx); 234 235 /* ERR_print_errors_cb calls |callback| with a string representation of each 236 * error in the current thread's error queue, from the least recent to the most 237 * recent error. 238 * 239 * The string will have the following format (which differs from 240 * |ERR_error_string|): 241 * 242 * [thread id]:error:[error code]:[library name]:[function name]: 243 * [reason string]:[file]:[line number]:[optional string data] 244 * 245 * (All in one line.) 246 * 247 * The callback can return one to continue the iteration or zero to stop it. 248 * The |ctx| argument is an opaque value that is passed through to the 249 * callback. */ 250 OPENSSL_EXPORT void ERR_print_errors_cb(ERR_print_errors_callback_t callback, 251 void *ctx); 252 253 254 /* Clearing errors. */ 255 256 /* ERR_clear_error clears the error queue for the current thread. */ 257 OPENSSL_EXPORT void ERR_clear_error(void); 258 259 /* ERR_remove_thread_state deletes the error queue for the given thread. If 260 * |tid| is NULL then the error queue for the current thread is deleted. */ 261 OPENSSL_EXPORT void ERR_remove_thread_state(const CRYPTO_THREADID *tid); 262 263 264 /* Custom errors. */ 265 266 /* ERR_get_next_error_library returns a value suitable for passing as the 267 * |library| argument to |ERR_put_error|. This is intended for code that wishes 268 * to push its own, non-standard errors to the error queue. */ 269 OPENSSL_EXPORT int ERR_get_next_error_library(void); 270 271 272 /* Private functions. */ 273 274 /* ERR_clear_system_error clears the system's error value (i.e. errno). */ 275 OPENSSL_EXPORT void ERR_clear_system_error(void); 276 277 /* OPENSSL_PUT_ERROR is used by OpenSSL code to add an error to the error 278 * queue. */ 279 #define OPENSSL_PUT_ERROR(library, func, reason) \ 280 ERR_put_error(ERR_LIB_##library, library##_F_##func, reason, __FILE__, \ 281 __LINE__) 282 283 /* OPENSSL_PUT_SYSTEM_ERROR is used by OpenSSL code to add an error from the 284 * operating system to the error queue. */ 285 /* TODO(fork): include errno. */ 286 #define OPENSSL_PUT_SYSTEM_ERROR(func) \ 287 ERR_put_error(ERR_LIB_SYS, SYS_F_##func, 0, __FILE__, __LINE__); 288 289 /* ERR_put_error adds an error to the error queue, dropping the least recent 290 * error if neccessary for space reasons. */ 291 OPENSSL_EXPORT void ERR_put_error(int library, int func, int reason, 292 const char *file, unsigned line); 293 294 /* ERR_add_error_data takes a variable number (|count|) of const char* 295 * pointers, concatenates them and sets the result as the data on the most 296 * recent error. */ 297 OPENSSL_EXPORT void ERR_add_error_data(unsigned count, ...); 298 299 /* ERR_add_error_dataf takes a printf-style format and arguments, and sets the 300 * result as the data on the most recent error. */ 301 OPENSSL_EXPORT void ERR_add_error_dataf(const char *format, ...); 302 303 /* ERR_set_mark "marks" the most recent error for use with |ERR_pop_to_mark|. 304 * It returns one if an error was marked and zero if there are no errors. */ 305 OPENSSL_EXPORT int ERR_set_mark(void); 306 307 /* ERR_pop_to_mark removes errors from the most recent to the least recent 308 * until (and not including) a "marked" error. It returns zero if no marked 309 * error was found (and thus all errors were removed) and one otherwise. Errors 310 * are marked using |ERR_set_mark|. */ 311 OPENSSL_EXPORT int ERR_pop_to_mark(void); 312 313 struct err_error_st { 314 /* file contains the filename where the error occured. */ 315 const char *file; 316 /* data contains optional data. It must be freed with |OPENSSL_free| if 317 * |flags&ERR_FLAG_MALLOCED|. */ 318 char *data; 319 /* packed contains the error library, function and reason, as packed by 320 * ERR_PACK. */ 321 uint32_t packed; 322 /* line contains the line number where the error occured. */ 323 uint16_t line; 324 /* flags contains a bitwise-OR of ERR_FLAG_* values. */ 325 uint8_t flags; 326 }; 327 328 /* ERR_FLAG_MALLOCED means the the |data| member must be freed when no longer 329 * needed. */ 330 #define ERR_FLAG_MALLOCED 1 331 /* ERR_FLAG_STRING means that the |data| member is a NUL-terminated string that 332 * can be printed. */ 333 #define ERR_FLAG_STRING 2 334 /* ERR_TXT_STRING is provided for compatibility with code that assumes that 335 * it's using OpenSSL. */ 336 #define ERR_TXT_STRING ERR_FLAG_STRING 337 338 /* ERR_FLAG_PUBLIC_MASK is applied to the flags field before it is returned 339 * from functions like |ERR_get_error_line_data|. */ 340 #define ERR_FLAG_PUBLIC_MASK 0xf 341 342 /* The following flag values are internal and are masked when flags are 343 * returned from functions like |ERR_get_error_line_data|. */ 344 345 /* ERR_FLAG_MARK is used to indicate a reversion point in the queue. See 346 * |ERR_pop_to_mark|. */ 347 #define ERR_FLAG_MARK 16 348 349 /* ERR_NUM_ERRORS is the limit of the number of errors in the queue. */ 350 #define ERR_NUM_ERRORS 16 351 352 /* ERR_STATE contains the per-thread, error queue. */ 353 typedef struct err_state_st { 354 /* tid is the identifier of the thread that owns this queue. */ 355 CRYPTO_THREADID tid; 356 357 /* errors contains the ERR_NUM_ERRORS most recent errors, organised as a ring 358 * buffer. */ 359 struct err_error_st errors[ERR_NUM_ERRORS]; 360 /* top contains the index one past the most recent error. If |top| equals 361 * |bottom| then the queue is empty. */ 362 unsigned top; 363 /* bottom contains the index of the last error in the queue. */ 364 unsigned bottom; 365 } ERR_STATE; 366 367 enum { 368 ERR_LIB_NONE = 1, 369 ERR_LIB_SYS, 370 ERR_LIB_BN, 371 ERR_LIB_RSA, 372 ERR_LIB_DH, 373 ERR_LIB_EVP, 374 ERR_LIB_BUF, 375 ERR_LIB_OBJ, 376 ERR_LIB_PEM, 377 ERR_LIB_DSA, 378 ERR_LIB_X509, 379 ERR_LIB_ASN1, 380 ERR_LIB_CONF, 381 ERR_LIB_CRYPTO, 382 ERR_LIB_EC, 383 ERR_LIB_SSL, 384 ERR_LIB_BIO, 385 ERR_LIB_PKCS7, 386 ERR_LIB_PKCS8, 387 ERR_LIB_X509V3, 388 ERR_LIB_PKCS12, 389 ERR_LIB_RAND, 390 ERR_LIB_ENGINE, 391 ERR_LIB_OCSP, 392 ERR_LIB_UI, 393 ERR_LIB_COMP, 394 ERR_LIB_ECDSA, 395 ERR_LIB_ECDH, 396 ERR_LIB_HMAC, 397 ERR_LIB_DIGEST, 398 ERR_LIB_CIPHER, 399 ERR_LIB_USER, 400 ERR_NUM_LIBS 401 }; 402 403 #define ERR_R_SYS_LIB ERR_LIB_SYS 404 #define ERR_R_BN_LIB ERR_LIB_BN 405 #define ERR_R_RSA_LIB ERR_LIB_RSA 406 #define ERR_R_DH_LIB ERR_LIB_DH 407 #define ERR_R_EVP_LIB ERR_LIB_EVP 408 #define ERR_R_BUF_LIB ERR_LIB_BUF 409 #define ERR_R_OBJ_LIB ERR_LIB_OBJ 410 #define ERR_R_PEM_LIB ERR_LIB_PEM 411 #define ERR_R_DSA_LIB ERR_LIB_DSA 412 #define ERR_R_X509_LIB ERR_LIB_X509 413 #define ERR_R_ASN1_LIB ERR_LIB_ASN1 414 #define ERR_R_CONF_LIB ERR_LIB_CONF 415 #define ERR_R_CRYPTO_LIB ERR_LIB_CRYPTO 416 #define ERR_R_EC_LIB ERR_LIB_EC 417 #define ERR_R_SSL_LIB ERR_LIB_SSL 418 #define ERR_R_BIO_LIB ERR_LIB_BIO 419 #define ERR_R_PKCS7_LIB ERR_LIB_PKCS7 420 #define ERR_R_PKCS8_LIB ERR_LIB_PKCS8 421 #define ERR_R_X509V3_LIB ERR_LIB_X509V3 422 #define ERR_R_PKCS12_LIB ERR_LIB_PKCS12 423 #define ERR_R_RAND_LIB ERR_LIB_RAND 424 #define ERR_R_DSO_LIB ERR_LIB_DSO 425 #define ERR_R_ENGINE_LIB ERR_LIB_ENGINE 426 #define ERR_R_OCSP_LIB ERR_LIB_OCSP 427 #define ERR_R_UI_LIB ERR_LIB_UI 428 #define ERR_R_COMP_LIB ERR_LIB_COMP 429 #define ERR_R_ECDSA_LIB ERR_LIB_ECDSA 430 #define ERR_R_ECDH_LIB ERR_LIB_ECDH 431 #define ERR_R_STORE_LIB ERR_LIB_STORE 432 #define ERR_R_FIPS_LIB ERR_LIB_FIPS 433 #define ERR_R_CMS_LIB ERR_LIB_CMS 434 #define ERR_R_TS_LIB ERR_LIB_TS 435 #define ERR_R_HMAC_LIB ERR_LIB_HMAC 436 #define ERR_R_JPAKE_LIB ERR_LIB_JPAKE 437 #define ERR_R_USER_LIB ERR_LIB_USER 438 #define ERR_R_DIGEST_LIB ERR_LIB_DIGEST 439 #define ERR_R_CIPHER_LIB ERR_LIB_CIPHER 440 441 /* Global reasons. */ 442 #define ERR_R_FATAL 64 443 #define ERR_R_MALLOC_FAILURE (1 | ERR_R_FATAL) 444 #define ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED (2 | ERR_R_FATAL) 445 #define ERR_R_PASSED_NULL_PARAMETER (3 | ERR_R_FATAL) 446 #define ERR_R_INTERNAL_ERROR (4 | ERR_R_FATAL) 447 #define ERR_R_OVERFLOW (5 | ERR_R_FATAL) 448 449 /* System error functions */ 450 #define SYS_F_fopen 100 451 #define SYS_F_fclose 101 452 #define SYS_F_fread 102 453 #define SYS_F_fwrite 103 454 #define SYS_F_socket 104 455 #define SYS_F_setsockopt 105 456 #define SYS_F_connect 106 457 #define SYS_F_getaddrinfo 107 458 459 #define ERR_PACK(lib, func, reason) \ 460 (((((uint32_t)lib) & 0xff) << 24) | ((((uint32_t)func) & 0xfff) << 12) | \ 461 ((((uint32_t)reason) & 0xfff))) 462 463 #define ERR_GET_LIB(packed_error) (((packed_error) >> 24) & 0xff) 464 #define ERR_GET_FUNC(packed_error) (((packed_error) >> 12) & 0xfff) 465 #define ERR_GET_REASON(packed_error) ((packed_error) & 0xfff) 466 467 /* ERR_STRING_DATA is the type of an lhash node that contains a mapping from a 468 * library, function or reason code to a string representation of it. */ 469 typedef struct err_string_data_st { 470 uint32_t error; 471 const char *string; 472 } ERR_STRING_DATA; 473 474 /* ERR_load_strings loads an array of ERR_STRING_DATA into the hash table. The 475 * array must be terminated by an entry with a NULL string. */ 476 OPENSSL_EXPORT void ERR_load_strings(const ERR_STRING_DATA *str); 477 478 /* ERR_FNS_st is a structure of function pointers that contains the actual 479 * implementation of the error queue handling functions. */ 480 struct ERR_FNS_st { 481 void (*shutdown)(void); 482 ERR_STRING_DATA *(*get_item)(uint32_t packed_error); 483 ERR_STRING_DATA *(*set_item)(const ERR_STRING_DATA *); 484 ERR_STRING_DATA *(*del_item)(uint32_t packed_error); 485 486 /* get_state returns the ERR_STATE for the current thread. This function 487 * never returns NULL. */ 488 ERR_STATE *(*get_state)(void); 489 490 /* release_state returns the |ERR_STATE| for the given thread, or NULL if 491 * none exists. It the return value is not NULL, it also returns ownership of 492 * the |ERR_STATE| and deletes it from its data structures. */ 493 ERR_STATE *(*release_state)(const CRYPTO_THREADID *tid); 494 495 /* get_next_library returns a unique value suitable for passing as the 496 * |library| to error calls. It will be distinct from all built-in library 497 * values. */ 498 int (*get_next_library)(void); 499 }; 500 501 /* OPENSSL_DECLARE_ERROR_REASON is used by util/make_errors.h (which generates 502 * the error defines) to recognise that an additional reason value is needed. 503 * This is needed when the reason value is used outside of an 504 * |OPENSSL_PUT_ERROR| macro. The resulting define will be 505 * ${lib}_R_${reason}. */ 506 #define OPENSSL_DECLARE_ERROR_REASON(lib, reason) 507 508 /* OPENSSL_DECLARE_ERROR_FUNCTION is used by util/make_errors.h (which 509 * generates the error * defines to recognise that an additional function value 510 * is needed. This is * needed when the function value is used outside of an 511 * |OPENSSL_PUT_ERROR| * macro. The resulting define will be 512 * ${lib}_F_${reason}. */ 513 #define OPENSSL_DECLARE_ERROR_FUNCTION(lib, function_name) 514 515 /* ERR_load_BIO_strings does nothing. 516 * 517 * TODO(fork): remove. libjingle calls this. */ 518 OPENSSL_EXPORT void ERR_load_BIO_strings(void); 519 520 521 #if defined(__cplusplus) 522 } /* extern C */ 523 #endif 524 525 #endif /* OPENSSL_HEADER_ERR_H */ 526
