1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
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@cryptsoft.com).
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.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
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@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@cryptsoft.com)"
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
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.]
57 /* ====================================================================
58 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
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
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/)"
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@openssl.org.
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.
86 * 6. Redistributions of any form whatsoever must retain the following
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * ====================================================================
105 * This product includes cryptographic software written by Eric Young
106 * (eay@cryptsoft.com). This product includes software written by Tim
107 * Hudson (tjh@cryptsoft.com). */
109 #ifndef OPENSSL_HEADER_ERR_H
110 #define OPENSSL_HEADER_ERR_H
112 #include <openssl/base.h>
113 #include <openssl/thread.h>
114 #include <openssl/lhash.h>
116 #if defined(__cplusplus)
121 /* Error queue handling functions.
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.
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.
133 * The library identifier, function identifier and reason code are packed in a
134 * uint32_t and there exist various functions for unpacking it.
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. */
143 /* Startup and shutdown. */
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);
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);
156 /* Reading and formatting errors. */
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);
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);
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);
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);
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);
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
195 * The string will have the following format:
197 * error:[error code]:[library name]:[function name]:[reason string]
199 * error code is an 8 digit hexadecimal number; library name, function name
200 * and reason string are ASCII text.
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
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
210 OPENSSL_EXPORT void ERR_error_string_n(uint32_t packed_error, char *buf,
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);
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);
221 /* ERR_reason_error_string returns a string representation of the reason for
223 OPENSSL_EXPORT const char *ERR_reason_error_string(uint32_t packed_error);
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|.
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,
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
239 * The string will have the following format (which differs from
240 * |ERR_error_string|):
242 * [thread id]:error:[error code]:[library name]:[function name]:
243 * [reason string]:[file]:[line number]:[optional string data]
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
250 OPENSSL_EXPORT void ERR_print_errors_cb(ERR_print_errors_callback_t callback,
254 /* Clearing errors. */
256 /* ERR_clear_error clears the error queue for the current thread. */
257 OPENSSL_EXPORT void ERR_clear_error(void);
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);
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);
272 /* Private functions. */
274 /* ERR_clear_system_error clears the system's error value (i.e. errno). */
275 OPENSSL_EXPORT void ERR_clear_system_error(void);
277 /* OPENSSL_PUT_ERROR is used by OpenSSL code to add an error to the error
279 #define OPENSSL_PUT_ERROR(library, func, reason) \
280 ERR_put_error(ERR_LIB_##library, library##_F_##func, reason, __FILE__, \
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__);
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);
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
297 OPENSSL_EXPORT void ERR_add_error_data(unsigned count, ...);
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, ...);
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);
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);
313 struct err_error_st {
314 /* file contains the filename where the error occured. */
316 /* data contains optional data. It must be freed with |OPENSSL_free| if
317 * |flags&ERR_FLAG_MALLOCED|. */
319 /* packed contains the error library, function and reason, as packed by
322 /* line contains the line number where the error occured. */
324 /* flags contains a bitwise-OR of ERR_FLAG_* values. */
328 /* ERR_FLAG_MALLOCED means the the |data| member must be freed when no longer
330 #define ERR_FLAG_MALLOCED 1
331 /* ERR_FLAG_STRING means that the |data| member is a NUL-terminated string that
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
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
342 /* The following flag values are internal and are masked when flags are
343 * returned from functions like |ERR_get_error_line_data|. */
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
349 /* ERR_NUM_ERRORS is the limit of the number of errors in the queue. */
350 #define ERR_NUM_ERRORS 16
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. */
357 /* errors contains the ERR_NUM_ERRORS most recent errors, organised as a ring
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. */
363 /* bottom contains the index of the last error in the queue. */
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
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)
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
459 #define ERR_PACK(lib, func, reason) \
460 (((((uint32_t)lib) & 0xff) << 24) | ((((uint32_t)func) & 0xfff) << 12) | \
461 ((((uint32_t)reason) & 0xfff)))
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)
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 {
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);
478 /* ERR_FNS_st is a structure of function pointers that contains the actual
479 * implementation of the error queue handling functions. */
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);
486 /* get_state returns the ERR_STATE for the current thread. This function
487 * never returns NULL. */
488 ERR_STATE *(*get_state)(void);
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);
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
498 int (*get_next_library)(void);
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)
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)
515 /* ERR_load_BIO_strings does nothing.
517 * TODO(fork): remove. libjingle calls this. */
518 OPENSSL_EXPORT void ERR_load_BIO_strings(void);
521 #if defined(__cplusplus)
525 #endif /* OPENSSL_HEADER_ERR_H */