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/*
This file is part of libmicrohttpd
Copyright (C) 2006-2021 Christian Grothoff (and other contributing authors)
Copyright (C) 2014-2023 Evgeny Grin (Karlson2k)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file microhttpd.h
* @brief public interface to libmicrohttpd
* @author Christian Grothoff
* @author Karlson2k (Evgeny Grin)
* @author Chris GauthierDickey
*
* All symbols defined in this header start with MHD. MHD is a small
* HTTP daemon library. As such, it does not have any API for logging
* errors (you can only enable or disable logging to stderr). Also,
* it may not support all of the HTTP features directly, where
* applicable, portions of HTTP may have to be handled by clients of
* the library.
*
* The library is supposed to handle everything that it must handle
* (because the API would not allow clients to do this), such as basic
* connection management; however, detailed interpretations of headers
* -- such as range requests -- and HTTP methods are left to clients.
* The library does understand HEAD and will only send the headers of
* the response and not the body, even if the client supplied a body.
* The library also understands headers that control connection
* management (specifically, "Connection: close" and "Expect: 100
* continue" are understood and handled automatically).
*
* MHD understands POST data and is able to decode certain formats
* (at the moment only "application/x-www-form-urlencoded" and
* "multipart/formdata"). Unsupported encodings and large POST
* submissions may require the application to manually process
* the stream, which is provided to the main application (and thus can be
* processed, just not conveniently by MHD).
*
* The header file defines various constants used by the HTTP protocol.
* This does not mean that MHD actually interprets all of these
* values. The provided constants are exported as a convenience
* for users of the library. MHD does not verify that transmitted
* HTTP headers are part of the standard specification; users of the
* library are free to define their own extensions of the HTTP
* standard and use those with MHD.
*
* All functions are guaranteed to be completely reentrant and
* thread-safe (with the exception of #MHD_set_connection_value,
* which must only be used in a particular context).
*
*
* @defgroup event event-loop control
* MHD API to start and stop the HTTP server and manage the event loop.
* @defgroup response generation of responses
* MHD API used to generate responses.
* @defgroup request handling of requests
* MHD API used to access information about requests.
* @defgroup authentication HTTP authentication
* MHD API related to basic and digest HTTP authentication.
* @defgroup logging logging
* MHD API to mange logging and error handling
* @defgroup specialized misc. specialized functions
* This group includes functions that do not fit into any particular
* category and that are rarely used.
*/
#ifndef MHD_MICROHTTPD_H
#define MHD_MICROHTTPD_H
#ifdef __cplusplus
extern "C"
{
#if 0 /* keep Emacsens' auto-indent happy */
}
#endif
#endif
/**
* Current version of the library in packed BCD form.
* @note Version number components are coded as Simple Binary-Coded Decimal
* (also called Natural BCD or BCD 8421). While they are hexadecimal numbers,
* they are parsed as decimal numbers.
* Example: 0x01093001 = 1.9.30-1.
*/
#define MHD_VERSION 0x01000100
/* If generic headers don't work on your platform, include headers
which define 'va_list', 'size_t', 'ssize_t', 'intptr_t', 'off_t',
'uint8_t', 'uint16_t', 'int32_t', 'uint32_t', 'int64_t', 'uint64_t',
'struct sockaddr', 'socklen_t', 'fd_set' and "#define MHD_PLATFORM_H" before
including "microhttpd.h". Then the following "standard"
includes won't be used (which might be a good idea, especially
on platforms where they do not exist).
*/
#ifndef MHD_PLATFORM_H
#if defined(_WIN32) && ! defined(__CYGWIN__) && \
! defined(_CRT_DECLARE_NONSTDC_NAMES)
/* Declare POSIX-compatible names */
#define _CRT_DECLARE_NONSTDC_NAMES 1
#endif /* _WIN32 && ! __CYGWIN__ && ! _CRT_DECLARE_NONSTDC_NAMES */
#include <stdarg.h>
#include <stdint.h>
#include <sys/types.h>
#if ! defined(_WIN32) || defined(__CYGWIN__)
#include <unistd.h>
#include <sys/time.h>
#include <sys/socket.h>
#else /* _WIN32 && ! __CYGWIN__ */
#include <ws2tcpip.h>
#if defined(_MSC_FULL_VER) && ! defined(_SSIZE_T_DEFINED)
#define _SSIZE_T_DEFINED
typedef intptr_t ssize_t;
#endif /* !_SSIZE_T_DEFINED */
#endif /* _WIN32 && ! __CYGWIN__ */
#endif
#if defined(__CYGWIN__) && ! defined(_SYS_TYPES_FD_SET)
/* Do not define __USE_W32_SOCKETS under Cygwin! */
#error Cygwin with winsock fd_set is not supported
#endif
#ifdef __has_attribute
#if __has_attribute (flag_enum)
#define _MHD_FLAGS_ENUM __attribute__((flag_enum))
#endif /* flag_enum */
#if __has_attribute (enum_extensibility)
#define _MHD_FIXED_ENUM __attribute__((enum_extensibility (closed)))
#endif /* enum_extensibility */
#endif /* __has_attribute */
#ifndef _MHD_FLAGS_ENUM
#define _MHD_FLAGS_ENUM
#endif /* _MHD_FLAGS_ENUM */
#ifndef _MHD_FIXED_ENUM
#define _MHD_FIXED_ENUM
#endif /* _MHD_FIXED_ENUM */
#define _MHD_FIXED_FLAGS_ENUM _MHD_FIXED_ENUM _MHD_FLAGS_ENUM
/**
* Operational results from MHD calls.
*/
enum MHD_Result
{
/**
* MHD result code for "NO".
*/
MHD_NO = 0,
/**
* MHD result code for "YES".
*/
MHD_YES = 1
} _MHD_FIXED_ENUM;
/**
* Constant used to indicate unknown size (use when
* creating a response).
*/
#ifdef UINT64_MAX
#define MHD_SIZE_UNKNOWN UINT64_MAX
#else
#define MHD_SIZE_UNKNOWN ((uint64_t) -1LL)
#endif
#define MHD_CONTENT_READER_END_OF_STREAM ((ssize_t) -1)
#define MHD_CONTENT_READER_END_WITH_ERROR ((ssize_t) -2)
#ifndef _MHD_EXTERN
#if defined(_WIN32) && defined(MHD_W32LIB)
#define _MHD_EXTERN extern
#elif defined(_WIN32) && defined(MHD_W32DLL)
/* Define MHD_W32DLL when using MHD as W32 .DLL to speed up linker a little */
#define _MHD_EXTERN __declspec(dllimport)
#else
#define _MHD_EXTERN extern
#endif
#endif
#ifndef MHD_SOCKET_DEFINED
/**
* MHD_socket is type for socket FDs
*/
#if ! defined(_WIN32) || defined(_SYS_TYPES_FD_SET)
#define MHD_POSIX_SOCKETS 1
typedef int MHD_socket;
#define MHD_INVALID_SOCKET (-1)
#else /* !defined(_WIN32) || defined(_SYS_TYPES_FD_SET) */
#define MHD_WINSOCK_SOCKETS 1
#include <winsock2.h>
typedef SOCKET MHD_socket;
#define MHD_INVALID_SOCKET (INVALID_SOCKET)
#endif /* !defined(_WIN32) || defined(_SYS_TYPES_FD_SET) */
#define MHD_SOCKET_DEFINED 1
#endif /* MHD_SOCKET_DEFINED */
/**
* Define MHD_NO_DEPRECATION before including "microhttpd.h" to disable deprecation messages
*/
#ifdef MHD_NO_DEPRECATION
#define _MHD_DEPR_MACRO(msg)
#define _MHD_NO_DEPR_IN_MACRO 1
#define _MHD_DEPR_IN_MACRO(msg)
#define _MHD_NO_DEPR_FUNC 1
#define _MHD_DEPR_FUNC(msg)
#endif /* MHD_NO_DEPRECATION */
#ifndef _MHD_DEPR_MACRO
#if defined(_MSC_FULL_VER) && _MSC_VER + 0 >= 1500
/* VS 2008 or later */
/* Stringify macros */
#define _MHD_INSTRMACRO(a) #a
#define _MHD_STRMACRO(a) _MHD_INSTRMACRO (a)
/* deprecation message */
#define _MHD_DEPR_MACRO(msg) \
__pragma(message (__FILE__ "(" _MHD_STRMACRO ( __LINE__) "): warning: " msg))
#define _MHD_DEPR_IN_MACRO(msg) _MHD_DEPR_MACRO (msg)
#elif defined(__clang__) || defined(__GNUC_PATCHLEVEL__)
/* clang or GCC since 3.0 */
#define _MHD_GCC_PRAG(x) _Pragma(#x)
#if (defined(__clang__) && \
(__clang_major__ + 0 >= 5 || \
(! defined(__apple_build_version__) && \
(__clang_major__ + 0 > 3 || \
(__clang_major__ + 0 == 3 && __clang_minor__ >= 3))))) || \
__GNUC__ + 0 > 4 || (__GNUC__ + 0 == 4 && __GNUC_MINOR__ + 0 >= 8)
/* clang >= 3.3 (or XCode's clang >= 5.0) or
GCC >= 4.8 */
#define _MHD_DEPR_MACRO(msg) _MHD_GCC_PRAG (GCC warning msg)
#define _MHD_DEPR_IN_MACRO(msg) _MHD_DEPR_MACRO (msg)
#else /* older clang or GCC */
/* clang < 3.3, XCode's clang < 5.0, 3.0 <= GCC < 4.8 */
#define _MHD_DEPR_MACRO(msg) _MHD_GCC_PRAG (message msg)
#if (defined(__clang__) && \
(__clang_major__ + 0 > 2 || \
(__clang_major__ + 0 == 2 && __clang_minor__ >= 9))) /* clang >= 2.9 */
/* clang handles inline pragmas better than GCC */
#define _MHD_DEPR_IN_MACRO(msg) _MHD_DEPR_MACRO (msg)
#endif /* clang >= 2.9 */
#endif /* older clang or GCC */
/* #elif defined(SOMEMACRO) */ /* add compiler-specific macros here if required */
#endif /* clang || GCC >= 3.0 */
#endif /* !_MHD_DEPR_MACRO */
#ifndef _MHD_DEPR_MACRO
#define _MHD_DEPR_MACRO(msg)
#endif /* !_MHD_DEPR_MACRO */
#ifndef _MHD_DEPR_IN_MACRO
#define _MHD_NO_DEPR_IN_MACRO 1
#define _MHD_DEPR_IN_MACRO(msg)
#endif /* !_MHD_DEPR_IN_MACRO */
#ifndef _MHD_DEPR_FUNC
#if defined(_MSC_FULL_VER) && _MSC_VER + 0 >= 1400
/* VS 2005 or later */
#define _MHD_DEPR_FUNC(msg) __declspec(deprecated (msg))
#elif defined(_MSC_FULL_VER) && _MSC_VER + 0 >= 1310
/* VS .NET 2003 deprecation does not support custom messages */
#define _MHD_DEPR_FUNC(msg) __declspec(deprecated)
#elif (__GNUC__ + 0 >= 5) || (defined(__clang__) && \
(__clang_major__ + 0 > 2 || \
(__clang_major__ + 0 == 2 && __clang_minor__ >= 9)))
/* GCC >= 5.0 or clang >= 2.9 */
#define _MHD_DEPR_FUNC(msg) __attribute__((deprecated (msg)))
#elif defined(__clang__) || __GNUC__ + 0 > 3 || \
(__GNUC__ + 0 == 3 && __GNUC_MINOR__ + 0 >= 1)
/* 3.1 <= GCC < 5.0 or clang < 2.9 */
/* old GCC-style deprecation does not support custom messages */
#define _MHD_DEPR_FUNC(msg) __attribute__((__deprecated__))
/* #elif defined(SOMEMACRO) */ /* add compiler-specific macros here if required */
#endif /* clang < 2.9 || GCC >= 3.1 */
#endif /* !_MHD_DEPR_FUNC */
#ifndef _MHD_DEPR_FUNC
#define _MHD_NO_DEPR_FUNC 1
#define _MHD_DEPR_FUNC(msg)
#endif /* !_MHD_DEPR_FUNC */
/**
* Not all architectures and `printf()`'s support the `long long` type.
* This gives the ability to replace `long long` with just a `long`,
* standard `int` or a `short`.
*/
#ifndef MHD_LONG_LONG
/**
* @deprecated use #MHD_UNSIGNED_LONG_LONG instead!
*/
#define MHD_LONG_LONG long long
#define MHD_UNSIGNED_LONG_LONG unsigned long long
#else /* MHD_LONG_LONG */
_MHD_DEPR_MACRO ( \
"Macro MHD_LONG_LONG is deprecated, use MHD_UNSIGNED_LONG_LONG")
#endif
/**
* Format string for printing a variable of type #MHD_LONG_LONG.
* You should only redefine this if you also define #MHD_LONG_LONG.
*/
#ifndef MHD_LONG_LONG_PRINTF
/**
* @deprecated use #MHD_UNSIGNED_LONG_LONG_PRINTF instead!
*/
#define MHD_LONG_LONG_PRINTF "ll"
#define MHD_UNSIGNED_LONG_LONG_PRINTF "%llu"
#else /* MHD_LONG_LONG_PRINTF */
_MHD_DEPR_MACRO ( \
"Macro MHD_LONG_LONG_PRINTF is deprecated, use MHD_UNSIGNED_LONG_LONG_PRINTF")
#endif
/**
* @defgroup httpcode HTTP response codes.
* These are the status codes defined for HTTP responses.
* See: https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
* Registry export date: 2023-09-29
* @{
*/
/* 100 "Continue". RFC9110, Section 15.2.1. */
#define MHD_HTTP_CONTINUE 100
/* 101 "Switching Protocols". RFC9110, Section 15.2.2. */
#define MHD_HTTP_SWITCHING_PROTOCOLS 101
/* 102 "Processing". RFC2518. */
#define MHD_HTTP_PROCESSING 102
/* 103 "Early Hints". RFC8297. */
#define MHD_HTTP_EARLY_HINTS 103
/* 200 "OK". RFC9110, Section 15.3.1. */
#define MHD_HTTP_OK 200
/* 201 "Created". RFC9110, Section 15.3.2. */
#define MHD_HTTP_CREATED 201
/* 202 "Accepted". RFC9110, Section 15.3.3. */
#define MHD_HTTP_ACCEPTED 202
/* 203 "Non-Authoritative Information". RFC9110, Section 15.3.4. */
#define MHD_HTTP_NON_AUTHORITATIVE_INFORMATION 203
/* 204 "No Content". RFC9110, Section 15.3.5. */
#define MHD_HTTP_NO_CONTENT 204
/* 205 "Reset Content". RFC9110, Section 15.3.6. */
#define MHD_HTTP_RESET_CONTENT 205
/* 206 "Partial Content". RFC9110, Section 15.3.7. */
#define MHD_HTTP_PARTIAL_CONTENT 206
/* 207 "Multi-Status". RFC4918. */
#define MHD_HTTP_MULTI_STATUS 207
/* 208 "Already Reported". RFC5842. */
#define MHD_HTTP_ALREADY_REPORTED 208
/* 226 "IM Used". RFC3229. */
#define MHD_HTTP_IM_USED 226
/* 300 "Multiple Choices". RFC9110, Section 15.4.1. */
#define MHD_HTTP_MULTIPLE_CHOICES 300
/* 301 "Moved Permanently". RFC9110, Section 15.4.2. */
#define MHD_HTTP_MOVED_PERMANENTLY 301
/* 302 "Found". RFC9110, Section 15.4.3. */
#define MHD_HTTP_FOUND 302
/* 303 "See Other". RFC9110, Section 15.4.4. */
#define MHD_HTTP_SEE_OTHER 303
/* 304 "Not Modified". RFC9110, Section 15.4.5. */
#define MHD_HTTP_NOT_MODIFIED 304
/* 305 "Use Proxy". RFC9110, Section 15.4.6. */
#define MHD_HTTP_USE_PROXY 305
/* 306 "Switch Proxy". Not used! RFC9110, Section 15.4.7. */
#define MHD_HTTP_SWITCH_PROXY 306
/* 307 "Temporary Redirect". RFC9110, Section 15.4.8. */
#define MHD_HTTP_TEMPORARY_REDIRECT 307
/* 308 "Permanent Redirect". RFC9110, Section 15.4.9. */
#define MHD_HTTP_PERMANENT_REDIRECT 308
/* 400 "Bad Request". RFC9110, Section 15.5.1. */
#define MHD_HTTP_BAD_REQUEST 400
/* 401 "Unauthorized". RFC9110, Section 15.5.2. */
#define MHD_HTTP_UNAUTHORIZED 401
/* 402 "Payment Required". RFC9110, Section 15.5.3. */
#define MHD_HTTP_PAYMENT_REQUIRED 402
/* 403 "Forbidden". RFC9110, Section 15.5.4. */
#define MHD_HTTP_FORBIDDEN 403
/* 404 "Not Found". RFC9110, Section 15.5.5. */
#define MHD_HTTP_NOT_FOUND 404
/* 405 "Method Not Allowed". RFC9110, Section 15.5.6. */
#define MHD_HTTP_METHOD_NOT_ALLOWED 405
/* 406 "Not Acceptable". RFC9110, Section 15.5.7. */
#define MHD_HTTP_NOT_ACCEPTABLE 406
/* 407 "Proxy Authentication Required". RFC9110, Section 15.5.8. */
#define MHD_HTTP_PROXY_AUTHENTICATION_REQUIRED 407
/* 408 "Request Timeout". RFC9110, Section 15.5.9. */
#define MHD_HTTP_REQUEST_TIMEOUT 408
/* 409 "Conflict". RFC9110, Section 15.5.10. */
#define MHD_HTTP_CONFLICT 409
/* 410 "Gone". RFC9110, Section 15.5.11. */
#define MHD_HTTP_GONE 410
/* 411 "Length Required". RFC9110, Section 15.5.12. */
#define MHD_HTTP_LENGTH_REQUIRED 411
/* 412 "Precondition Failed". RFC9110, Section 15.5.13. */
#define MHD_HTTP_PRECONDITION_FAILED 412
/* 413 "Content Too Large". RFC9110, Section 15.5.14. */
#define MHD_HTTP_CONTENT_TOO_LARGE 413
/* 414 "URI Too Long". RFC9110, Section 15.5.15. */
#define MHD_HTTP_URI_TOO_LONG 414
/* 415 "Unsupported Media Type". RFC9110, Section 15.5.16. */
#define MHD_HTTP_UNSUPPORTED_MEDIA_TYPE 415
/* 416 "Range Not Satisfiable". RFC9110, Section 15.5.17. */
#define MHD_HTTP_RANGE_NOT_SATISFIABLE 416
/* 417 "Expectation Failed". RFC9110, Section 15.5.18. */
#define MHD_HTTP_EXPECTATION_FAILED 417
/* 421 "Misdirected Request". RFC9110, Section 15.5.20. */
#define MHD_HTTP_MISDIRECTED_REQUEST 421
/* 422 "Unprocessable Content". RFC9110, Section 15.5.21. */
#define MHD_HTTP_UNPROCESSABLE_CONTENT 422
/* 423 "Locked". RFC4918. */
#define MHD_HTTP_LOCKED 423
/* 424 "Failed Dependency". RFC4918. */
#define MHD_HTTP_FAILED_DEPENDENCY 424
/* 425 "Too Early". RFC8470. */
#define MHD_HTTP_TOO_EARLY 425
/* 426 "Upgrade Required". RFC9110, Section 15.5.22. */
#define MHD_HTTP_UPGRADE_REQUIRED 426
/* 428 "Precondition Required". RFC6585. */
#define MHD_HTTP_PRECONDITION_REQUIRED 428
/* 429 "Too Many Requests". RFC6585. */
#define MHD_HTTP_TOO_MANY_REQUESTS 429
/* 431 "Request Header Fields Too Large". RFC6585. */
#define MHD_HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE 431
/* 451 "Unavailable For Legal Reasons". RFC7725. */
#define MHD_HTTP_UNAVAILABLE_FOR_LEGAL_REASONS 451
/* 500 "Internal Server Error". RFC9110, Section 15.6.1. */
#define MHD_HTTP_INTERNAL_SERVER_ERROR 500
/* 501 "Not Implemented". RFC9110, Section 15.6.2. */
#define MHD_HTTP_NOT_IMPLEMENTED 501
/* 502 "Bad Gateway". RFC9110, Section 15.6.3. */
#define MHD_HTTP_BAD_GATEWAY 502
/* 503 "Service Unavailable". RFC9110, Section 15.6.4. */
#define MHD_HTTP_SERVICE_UNAVAILABLE 503
/* 504 "Gateway Timeout". RFC9110, Section 15.6.5. */
#define MHD_HTTP_GATEWAY_TIMEOUT 504
/* 505 "HTTP Version Not Supported". RFC9110, Section 15.6.6. */
#define MHD_HTTP_HTTP_VERSION_NOT_SUPPORTED 505
/* 506 "Variant Also Negotiates". RFC2295. */
#define MHD_HTTP_VARIANT_ALSO_NEGOTIATES 506
/* 507 "Insufficient Storage". RFC4918. */
#define MHD_HTTP_INSUFFICIENT_STORAGE 507
/* 508 "Loop Detected". RFC5842. */
#define MHD_HTTP_LOOP_DETECTED 508
/* 510 "Not Extended". (OBSOLETED) RFC2774; status-change-http-experiments-to-historic. */
#define MHD_HTTP_NOT_EXTENDED 510
/* 511 "Network Authentication Required". RFC6585. */
#define MHD_HTTP_NETWORK_AUTHENTICATION_REQUIRED 511
/* Not registered non-standard codes */
/* 449 "Reply With". MS IIS extension. */
#define MHD_HTTP_RETRY_WITH 449
/* 450 "Blocked by Windows Parental Controls". MS extension. */
#define MHD_HTTP_BLOCKED_BY_WINDOWS_PARENTAL_CONTROLS 450
/* 509 "Bandwidth Limit Exceeded". Apache extension. */
#define MHD_HTTP_BANDWIDTH_LIMIT_EXCEEDED 509
/* Deprecated names and codes */
/** @deprecated */
#define MHD_HTTP_METHOD_NOT_ACCEPTABLE _MHD_DEPR_IN_MACRO (\
"Value MHD_HTTP_METHOD_NOT_ACCEPTABLE is deprecated, use MHD_HTTP_NOT_ACCEPTABLE" \
) 406
/** @deprecated */
#define MHD_HTTP_REQUEST_ENTITY_TOO_LARGE _MHD_DEPR_IN_MACRO (\
"Value MHD_HTTP_REQUEST_ENTITY_TOO_LARGE is deprecated, use MHD_HTTP_CONTENT_TOO_LARGE"\
) 413
/** @deprecated */
#define MHD_HTTP_PAYLOAD_TOO_LARGE _MHD_DEPR_IN_MACRO (\
"Value MHD_HTTP_PAYLOAD_TOO_LARGE is deprecated use MHD_HTTP_CONTENT_TOO_LARGE" \
) 413
/** @deprecated */
#define MHD_HTTP_REQUEST_URI_TOO_LONG _MHD_DEPR_IN_MACRO (\
"Value MHD_HTTP_REQUEST_URI_TOO_LONG is deprecated, use MHD_HTTP_URI_TOO_LONG" \
) 414
/** @deprecated */
#define MHD_HTTP_REQUESTED_RANGE_NOT_SATISFIABLE _MHD_DEPR_IN_MACRO (\
"Value MHD_HTTP_REQUESTED_RANGE_NOT_SATISFIABLE is deprecated, use MHD_HTTP_RANGE_NOT_SATISFIABLE" \
) 416
/** @deprecated */
#define MHD_HTTP_UNPROCESSABLE_ENTITY _MHD_DEPR_IN_MACRO (\
"Value MHD_HTTP_UNPROCESSABLE_ENTITY is deprecated, use MHD_HTTP_UNPROCESSABLE_CONTENT" \
) 422
/** @deprecated */
#define MHD_HTTP_UNORDERED_COLLECTION _MHD_DEPR_IN_MACRO (\
"Value MHD_HTTP_UNORDERED_COLLECTION is deprecated as it was removed from RFC" \
) 425
/** @deprecated */
#define MHD_HTTP_NO_RESPONSE _MHD_DEPR_IN_MACRO (\
"Value MHD_HTTP_NO_RESPONSE is deprecated as it is nginx internal code for logs only"\
) 444
/** @} */ /* end of group httpcode */
/**
* Returns the string reason phrase for a response code.
*
* If message string is not available for a status code,
* "Unknown" string will be returned.
*/
_MHD_EXTERN const char *
MHD_get_reason_phrase_for (unsigned int code);
/**
* Returns the length of the string reason phrase for a response code.
*
* If message string is not available for a status code,
* 0 is returned.
*/
_MHD_EXTERN size_t
MHD_get_reason_phrase_len_for (unsigned int code);
/**
* Flag to be or-ed with MHD_HTTP status code for
* SHOUTcast. This will cause the response to begin
* with the SHOUTcast "ICY" line instead of "HTTP/1.x".
* @ingroup specialized
*/
#define MHD_ICY_FLAG ((uint32_t) (((uint32_t) 1) << 31))
/**
* @defgroup headers HTTP headers
* The standard headers found in HTTP requests and responses.
* See: https://www.iana.org/assignments/http-fields/http-fields.xhtml
* Registry export date: 2023-10-02
* @{
*/
/* Main HTTP headers. */
/* Permanent. RFC9110, Section 12.5.1: HTTP Semantics */
#define MHD_HTTP_HEADER_ACCEPT "Accept"
/* Deprecated. RFC9110, Section 12.5.2: HTTP Semantics */
#define MHD_HTTP_HEADER_ACCEPT_CHARSET "Accept-Charset"
/* Permanent. RFC9110, Section 12.5.3: HTTP Semantics */
#define MHD_HTTP_HEADER_ACCEPT_ENCODING "Accept-Encoding"
/* Permanent. RFC9110, Section 12.5.4: HTTP Semantics */
#define MHD_HTTP_HEADER_ACCEPT_LANGUAGE "Accept-Language"
/* Permanent. RFC9110, Section 14.3: HTTP Semantics */
#define MHD_HTTP_HEADER_ACCEPT_RANGES "Accept-Ranges"
/* Permanent. RFC9111, Section 5.1: HTTP Caching */
#define MHD_HTTP_HEADER_AGE "Age"
/* Permanent. RFC9110, Section 10.2.1: HTTP Semantics */
#define MHD_HTTP_HEADER_ALLOW "Allow"
/* Permanent. RFC9110, Section 11.6.3: HTTP Semantics */
#define MHD_HTTP_HEADER_AUTHENTICATION_INFO "Authentication-Info"
/* Permanent. RFC9110, Section 11.6.2: HTTP Semantics */
#define MHD_HTTP_HEADER_AUTHORIZATION "Authorization"
/* Permanent. RFC9111, Section 5.2 */
#define MHD_HTTP_HEADER_CACHE_CONTROL "Cache-Control"
/* Permanent. RFC9112, Section 9.6: HTTP/1.1 */
#define MHD_HTTP_HEADER_CLOSE "Close"
/* Permanent. RFC9110, Section 7.6.1: HTTP Semantics */
#define MHD_HTTP_HEADER_CONNECTION "Connection"
/* Permanent. RFC9110, Section 8.4: HTTP Semantics */
#define MHD_HTTP_HEADER_CONTENT_ENCODING "Content-Encoding"
/* Permanent. RFC9110, Section 8.5: HTTP Semantics */
#define MHD_HTTP_HEADER_CONTENT_LANGUAGE "Content-Language"
/* Permanent. RFC9110, Section 8.6: HTTP Semantics */
#define MHD_HTTP_HEADER_CONTENT_LENGTH "Content-Length"
/* Permanent. RFC9110, Section 8.7: HTTP Semantics */
#define MHD_HTTP_HEADER_CONTENT_LOCATION "Content-Location"
/* Permanent. RFC9110, Section 14.4: HTTP Semantics */
#define MHD_HTTP_HEADER_CONTENT_RANGE "Content-Range"
/* Permanent. RFC9110, Section 8.3: HTTP Semantics */
#define MHD_HTTP_HEADER_CONTENT_TYPE "Content-Type"
/* Permanent. RFC9110, Section 6.6.1: HTTP Semantics */
#define MHD_HTTP_HEADER_DATE "Date"
/* Permanent. RFC9110, Section 8.8.3: HTTP Semantics */
#define MHD_HTTP_HEADER_ETAG "ETag"
/* Permanent. RFC9110, Section 10.1.1: HTTP Semantics */
#define MHD_HTTP_HEADER_EXPECT "Expect"
/* Permanent. RFC9111, Section 5.3: HTTP Caching */
#define MHD_HTTP_HEADER_EXPIRES "Expires"
/* Permanent. RFC9110, Section 10.1.2: HTTP Semantics */
#define MHD_HTTP_HEADER_FROM "From"
/* Permanent. RFC9110, Section 7.2: HTTP Semantics */
#define MHD_HTTP_HEADER_HOST "Host"
/* Permanent. RFC9110, Section 13.1.1: HTTP Semantics */
#define MHD_HTTP_HEADER_IF_MATCH "If-Match"
/* Permanent. RFC9110, Section 13.1.3: HTTP Semantics */
#define MHD_HTTP_HEADER_IF_MODIFIED_SINCE "If-Modified-Since"
/* Permanent. RFC9110, Section 13.1.2: HTTP Semantics */
#define MHD_HTTP_HEADER_IF_NONE_MATCH "If-None-Match"
/* Permanent. RFC9110, Section 13.1.5: HTTP Semantics */
#define MHD_HTTP_HEADER_IF_RANGE "If-Range"
/* Permanent. RFC9110, Section 13.1.4: HTTP Semantics */
#define MHD_HTTP_HEADER_IF_UNMODIFIED_SINCE "If-Unmodified-Since"
/* Permanent. RFC9110, Section 8.8.2: HTTP Semantics */
#define MHD_HTTP_HEADER_LAST_MODIFIED "Last-Modified"
/* Permanent. RFC9110, Section 10.2.2: HTTP Semantics */
#define MHD_HTTP_HEADER_LOCATION "Location"
/* Permanent. RFC9110, Section 7.6.2: HTTP Semantics */
#define MHD_HTTP_HEADER_MAX_FORWARDS "Max-Forwards"
/* Permanent. RFC9112, Appendix B.1: HTTP/1.1 */
#define MHD_HTTP_HEADER_MIME_VERSION "MIME-Version"
/* Deprecated. RFC9111, Section 5.4: HTTP Caching */
#define MHD_HTTP_HEADER_PRAGMA "Pragma"
/* Permanent. RFC9110, Section 11.7.1: HTTP Semantics */
#define MHD_HTTP_HEADER_PROXY_AUTHENTICATE "Proxy-Authenticate"
/* Permanent. RFC9110, Section 11.7.3: HTTP Semantics */
#define MHD_HTTP_HEADER_PROXY_AUTHENTICATION_INFO "Proxy-Authentication-Info"
/* Permanent. RFC9110, Section 11.7.2: HTTP Semantics */
#define MHD_HTTP_HEADER_PROXY_AUTHORIZATION "Proxy-Authorization"
/* Permanent. RFC9110, Section 14.2: HTTP Semantics */
#define MHD_HTTP_HEADER_RANGE "Range"
/* Permanent. RFC9110, Section 10.1.3: HTTP Semantics */
#define MHD_HTTP_HEADER_REFERER "Referer"
/* Permanent. RFC9110, Section 10.2.3: HTTP Semantics */
#define MHD_HTTP_HEADER_RETRY_AFTER "Retry-After"
/* Permanent. RFC9110, Section 10.2.4: HTTP Semantics */
#define MHD_HTTP_HEADER_SERVER "Server"
/* Permanent. RFC9110, Section 10.1.4: HTTP Semantics */
#define MHD_HTTP_HEADER_TE "TE"
/* Permanent. RFC9110, Section 6.6.2: HTTP Semantics */
#define MHD_HTTP_HEADER_TRAILER "Trailer"
/* Permanent. RFC9112, Section 6.1: HTTP Semantics */
#define MHD_HTTP_HEADER_TRANSFER_ENCODING "Transfer-Encoding"
/* Permanent. RFC9110, Section 7.8: HTTP Semantics */
#define MHD_HTTP_HEADER_UPGRADE "Upgrade"
/* Permanent. RFC9110, Section 10.1.5: HTTP Semantics */
#define MHD_HTTP_HEADER_USER_AGENT "User-Agent"
/* Permanent. RFC9110, Section 12.5.5: HTTP Semantics */
#define MHD_HTTP_HEADER_VARY "Vary"
/* Permanent. RFC9110, Section 7.6.3: HTTP Semantics */
#define MHD_HTTP_HEADER_VIA "Via"
/* Permanent. RFC9110, Section 11.6.1: HTTP Semantics */
#define MHD_HTTP_HEADER_WWW_AUTHENTICATE "WWW-Authenticate"
/* Permanent. RFC9110, Section 12.5.5: HTTP Semantics */
#define MHD_HTTP_HEADER_ASTERISK "*"
/* Additional HTTP headers. */
/* Permanent. RFC 3229: Delta encoding in HTTP */
#define MHD_HTTP_HEADER_A_IM "A-IM"
/* Permanent. RFC 2324: Hyper Text Coffee Pot Control Protocol (HTCPCP/1.0) */
#define MHD_HTTP_HEADER_ACCEPT_ADDITIONS "Accept-Additions"
/* Permanent. RFC 8942, Section 3.1: HTTP Client Hints */
#define MHD_HTTP_HEADER_ACCEPT_CH "Accept-CH"
/* Permanent. RFC 7089: HTTP Framework for Time-Based Access to Resource States -- Memento */
#define MHD_HTTP_HEADER_ACCEPT_DATETIME "Accept-Datetime"
/* Permanent. RFC 2295: Transparent Content Negotiation in HTTP */
#define MHD_HTTP_HEADER_ACCEPT_FEATURES "Accept-Features"
/* Permanent. RFC 5789: PATCH Method for HTTP */
#define MHD_HTTP_HEADER_ACCEPT_PATCH "Accept-Patch"
/* Permanent. Linked Data Platform 1.0 */
#define MHD_HTTP_HEADER_ACCEPT_POST "Accept-Post"
/* Permanent. RFC-ietf-httpbis-message-signatures-19, Section 5.1: HTTP Message Signatures */
#define MHD_HTTP_HEADER_ACCEPT_SIGNATURE "Accept-Signature"
/* Permanent. Fetch */
#define MHD_HTTP_HEADER_ACCESS_CONTROL_ALLOW_CREDENTIALS \
"Access-Control-Allow-Credentials"
/* Permanent. Fetch */
#define MHD_HTTP_HEADER_ACCESS_CONTROL_ALLOW_HEADERS \
"Access-Control-Allow-Headers"
/* Permanent. Fetch */
#define MHD_HTTP_HEADER_ACCESS_CONTROL_ALLOW_METHODS \
"Access-Control-Allow-Methods"
/* Permanent. Fetch */
#define MHD_HTTP_HEADER_ACCESS_CONTROL_ALLOW_ORIGIN \
"Access-Control-Allow-Origin"
/* Permanent. Fetch */
#define MHD_HTTP_HEADER_ACCESS_CONTROL_EXPOSE_HEADERS \
"Access-Control-Expose-Headers"
/* Permanent. Fetch */
#define MHD_HTTP_HEADER_ACCESS_CONTROL_MAX_AGE "Access-Control-Max-Age"
/* Permanent. Fetch */
#define MHD_HTTP_HEADER_ACCESS_CONTROL_REQUEST_HEADERS \
"Access-Control-Request-Headers"
/* Permanent. Fetch */
#define MHD_HTTP_HEADER_ACCESS_CONTROL_REQUEST_METHOD \
"Access-Control-Request-Method"
/* Permanent. RFC 7639, Section 2: The ALPN HTTP Header Field */
#define MHD_HTTP_HEADER_ALPN "ALPN"
/* Permanent. RFC 7838: HTTP Alternative Services */
#define MHD_HTTP_HEADER_ALT_SVC "Alt-Svc"
/* Permanent. RFC 7838: HTTP Alternative Services */
#define MHD_HTTP_HEADER_ALT_USED "Alt-Used"
/* Permanent. RFC 2295: Transparent Content Negotiation in HTTP */
#define MHD_HTTP_HEADER_ALTERNATES "Alternates"
/* Permanent. RFC 4437: Web Distributed Authoring and Versioning (WebDAV) Redirect Reference Resources */
#define MHD_HTTP_HEADER_APPLY_TO_REDIRECT_REF "Apply-To-Redirect-Ref"
/* Permanent. RFC 8053, Section 4: HTTP Authentication Extensions for Interactive Clients */
#define MHD_HTTP_HEADER_AUTHENTICATION_CONTROL "Authentication-Control"
/* Permanent. RFC9211: The Cache-Status HTTP Response Header Field */
#define MHD_HTTP_HEADER_CACHE_STATUS "Cache-Status"
/* Permanent. RFC 8607, Section 5.1: Calendaring Extensions to WebDAV (CalDAV): Managed Attachments */
#define MHD_HTTP_HEADER_CAL_MANAGED_ID "Cal-Managed-ID"
/* Permanent. RFC 7809, Section 7.1: Calendaring Extensions to WebDAV (CalDAV): Time Zones by Reference */
#define MHD_HTTP_HEADER_CALDAV_TIMEZONES "CalDAV-Timezones"
/* Permanent. RFC9297 */
#define MHD_HTTP_HEADER_CAPSULE_PROTOCOL "Capsule-Protocol"
/* Permanent. RFC9213: Targeted HTTP Cache Control */
#define MHD_HTTP_HEADER_CDN_CACHE_CONTROL "CDN-Cache-Control"
/* Permanent. RFC 8586: Loop Detection in Content Delivery Networks (CDNs) */
#define MHD_HTTP_HEADER_CDN_LOOP "CDN-Loop"
/* Permanent. RFC 8739, Section 3.3: Support for Short-Term, Automatically Renewed (STAR) Certificates in the Automated Certificate Management Environment (ACME) */
#define MHD_HTTP_HEADER_CERT_NOT_AFTER "Cert-Not-After"
/* Permanent. RFC 8739, Section 3.3: Support for Short-Term, Automatically Renewed (STAR) Certificates in the Automated Certificate Management Environment (ACME) */
#define MHD_HTTP_HEADER_CERT_NOT_BEFORE "Cert-Not-Before"
/* Permanent. Clear Site Data */
#define MHD_HTTP_HEADER_CLEAR_SITE_DATA "Clear-Site-Data"
/* Permanent. RFC9440, Section 2: Client-Cert HTTP Header Field */
#define MHD_HTTP_HEADER_CLIENT_CERT "Client-Cert"
/* Permanent. RFC9440, Section 2: Client-Cert HTTP Header Field */
#define MHD_HTTP_HEADER_CLIENT_CERT_CHAIN "Client-Cert-Chain"
/* Permanent. RFC-ietf-httpbis-digest-headers-13, Section 2: Digest Fields */
#define MHD_HTTP_HEADER_CONTENT_DIGEST "Content-Digest"
/* Permanent. RFC 6266: Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP) */
#define MHD_HTTP_HEADER_CONTENT_DISPOSITION "Content-Disposition"
/* Permanent. The HTTP Distribution and Replication Protocol */
#define MHD_HTTP_HEADER_CONTENT_ID "Content-ID"
/* Permanent. Content Security Policy Level 3 */
#define MHD_HTTP_HEADER_CONTENT_SECURITY_POLICY "Content-Security-Policy"
/* Permanent. Content Security Policy Level 3 */
#define MHD_HTTP_HEADER_CONTENT_SECURITY_POLICY_REPORT_ONLY \
"Content-Security-Policy-Report-Only"
/* Permanent. RFC 6265: HTTP State Management Mechanism */
#define MHD_HTTP_HEADER_COOKIE "Cookie"
/* Permanent. HTML */
#define MHD_HTTP_HEADER_CROSS_ORIGIN_EMBEDDER_POLICY \
"Cross-Origin-Embedder-Policy"
/* Permanent. HTML */
#define MHD_HTTP_HEADER_CROSS_ORIGIN_EMBEDDER_POLICY_REPORT_ONLY \
"Cross-Origin-Embedder-Policy-Report-Only"
/* Permanent. HTML */
#define MHD_HTTP_HEADER_CROSS_ORIGIN_OPENER_POLICY "Cross-Origin-Opener-Policy"
/* Permanent. HTML */
#define MHD_HTTP_HEADER_CROSS_ORIGIN_OPENER_POLICY_REPORT_ONLY \
"Cross-Origin-Opener-Policy-Report-Only"
/* Permanent. Fetch */
#define MHD_HTTP_HEADER_CROSS_ORIGIN_RESOURCE_POLICY \
"Cross-Origin-Resource-Policy"
/* Permanent. RFC 5323: Web Distributed Authoring and Versioning (WebDAV) SEARCH */
#define MHD_HTTP_HEADER_DASL "DASL"
/* Permanent. RFC 4918: HTTP Extensions for Web Distributed Authoring and Versioning (WebDAV) */
#define MHD_HTTP_HEADER_DAV "DAV"
/* Permanent. RFC 3229: Delta encoding in HTTP */
#define MHD_HTTP_HEADER_DELTA_BASE "Delta-Base"
/* Permanent. RFC 4918: HTTP Extensions for Web Distributed Authoring and Versioning (WebDAV) */
#define MHD_HTTP_HEADER_DEPTH "Depth"
/* Permanent. RFC 4918: HTTP Extensions for Web Distributed Authoring and Versioning (WebDAV) */
#define MHD_HTTP_HEADER_DESTINATION "Destination"
/* Permanent. The HTTP Distribution and Replication Protocol */
#define MHD_HTTP_HEADER_DIFFERENTIAL_ID "Differential-ID"
/* Permanent. RFC9449: OAuth 2.0 Demonstrating Proof of Possession (DPoP) */
#define MHD_HTTP_HEADER_DPOP "DPoP"
/* Permanent. RFC9449: OAuth 2.0 Demonstrating Proof of Possession (DPoP) */
#define MHD_HTTP_HEADER_DPOP_NONCE "DPoP-Nonce"
/* Permanent. RFC 8470: Using Early Data in HTTP */
#define MHD_HTTP_HEADER_EARLY_DATA "Early-Data"
/* Permanent. RFC9163: Expect-CT Extension for HTTP */
#define MHD_HTTP_HEADER_EXPECT_CT "Expect-CT"
/* Permanent. RFC 7239: Forwarded HTTP Extension */
#define MHD_HTTP_HEADER_FORWARDED "Forwarded"
/* Permanent. RFC 7486, Section 6.1.1: HTTP Origin-Bound Authentication (HOBA) */
#define MHD_HTTP_HEADER_HOBAREG "Hobareg"
/* Permanent. RFC 4918: HTTP Extensions for Web Distributed Authoring and Versioning (WebDAV) */
#define MHD_HTTP_HEADER_IF "If"
/* Permanent. RFC 6338: Scheduling Extensions to CalDAV */
#define MHD_HTTP_HEADER_IF_SCHEDULE_TAG_MATCH "If-Schedule-Tag-Match"
/* Permanent. RFC 3229: Delta encoding in HTTP */
#define MHD_HTTP_HEADER_IM "IM"
/* Permanent. RFC 8473: Token Binding over HTTP */
#define MHD_HTTP_HEADER_INCLUDE_REFERRED_TOKEN_BINDING_ID \
"Include-Referred-Token-Binding-ID"
/* Permanent. RFC 2068: Hypertext Transfer Protocol -- HTTP/1.1 */
#define MHD_HTTP_HEADER_KEEP_ALIVE "Keep-Alive"
/* Permanent. RFC 3253: Versioning Extensions to WebDAV: (Web Distributed Authoring and Versioning) */
#define MHD_HTTP_HEADER_LABEL "Label"
/* Permanent. HTML */
#define MHD_HTTP_HEADER_LAST_EVENT_ID "Last-Event-ID"
/* Permanent. RFC 8288: Web Linking */
#define MHD_HTTP_HEADER_LINK "Link"
/* Permanent. RFC 4918: HTTP Extensions for Web Distributed Authoring and Versioning (WebDAV) */
#define MHD_HTTP_HEADER_LOCK_TOKEN "Lock-Token"
/* Permanent. RFC 7089: HTTP Framework for Time-Based Access to Resource States -- Memento */
#define MHD_HTTP_HEADER_MEMENTO_DATETIME "Memento-Datetime"
/* Permanent. RFC 2227: Simple Hit-Metering and Usage-Limiting for HTTP */
#define MHD_HTTP_HEADER_METER "Meter"
/* Permanent. RFC 2295: Transparent Content Negotiation in HTTP */
#define MHD_HTTP_HEADER_NEGOTIATE "Negotiate"
/* Permanent. Network Error Logging */
#define MHD_HTTP_HEADER_NEL "NEL"
/* Permanent. OData Version 4.01 Part 1: Protocol; OASIS; Chet_Ensign */
#define MHD_HTTP_HEADER_ODATA_ENTITYID "OData-EntityId"
/* Permanent. OData Version 4.01 Part 1: Protocol; OASIS; Chet_Ensign */
#define MHD_HTTP_HEADER_ODATA_ISOLATION "OData-Isolation"
/* Permanent. OData Version 4.01 Part 1: Protocol; OASIS; Chet_Ensign */
#define MHD_HTTP_HEADER_ODATA_MAXVERSION "OData-MaxVersion"
/* Permanent. OData Version 4.01 Part 1: Protocol; OASIS; Chet_Ensign */
#define MHD_HTTP_HEADER_ODATA_VERSION "OData-Version"
/* Permanent. RFC 8053, Section 3: HTTP Authentication Extensions for Interactive Clients */
#define MHD_HTTP_HEADER_OPTIONAL_WWW_AUTHENTICATE "Optional-WWW-Authenticate"
/* Permanent. RFC 3648: Web Distributed Authoring and Versioning (WebDAV) Ordered Collections Protocol */
#define MHD_HTTP_HEADER_ORDERING_TYPE "Ordering-Type"
/* Permanent. RFC 6454: The Web Origin Concept */
#define MHD_HTTP_HEADER_ORIGIN "Origin"
/* Permanent. HTML */
#define MHD_HTTP_HEADER_ORIGIN_AGENT_CLUSTER "Origin-Agent-Cluster"
/* Permanent. RFC 8613, Section 11.1: Object Security for Constrained RESTful Environments (OSCORE) */
#define MHD_HTTP_HEADER_OSCORE "OSCORE"
/* Permanent. OASIS Project Specification 01; OASIS; Chet_Ensign */
#define MHD_HTTP_HEADER_OSLC_CORE_VERSION "OSLC-Core-Version"
/* Permanent. RFC 4918: HTTP Extensions for Web Distributed Authoring and Versioning (WebDAV) */
#define MHD_HTTP_HEADER_OVERWRITE "Overwrite"
/* Permanent. HTML */
#define MHD_HTTP_HEADER_PING_FROM "Ping-From"
/* Permanent. HTML */
#define MHD_HTTP_HEADER_PING_TO "Ping-To"
/* Permanent. RFC 3648: Web Distributed Authoring and Versioning (WebDAV) Ordered Collections Protocol */
#define MHD_HTTP_HEADER_POSITION "Position"
/* Permanent. RFC 7240: Prefer Header for HTTP */
#define MHD_HTTP_HEADER_PREFER "Prefer"
/* Permanent. RFC 7240: Prefer Header for HTTP */
#define MHD_HTTP_HEADER_PREFERENCE_APPLIED "Preference-Applied"
/* Permanent. RFC9218: Extensible Prioritization Scheme for HTTP */
#define MHD_HTTP_HEADER_PRIORITY "Priority"
/* Permanent. RFC9209: The Proxy-Status HTTP Response Header Field */
#define MHD_HTTP_HEADER_PROXY_STATUS "Proxy-Status"
/* Permanent. RFC 7469: Public Key Pinning Extension for HTTP */
#define MHD_HTTP_HEADER_PUBLIC_KEY_PINS "Public-Key-Pins"
/* Permanent. RFC 7469: Public Key Pinning Extension for HTTP */
#define MHD_HTTP_HEADER_PUBLIC_KEY_PINS_REPORT_ONLY \
"Public-Key-Pins-Report-Only"
/* Permanent. RFC 4437: Web Distributed Authoring and Versioning (WebDAV) Redirect Reference Resources */
#define MHD_HTTP_HEADER_REDIRECT_REF "Redirect-Ref"
/* Permanent. HTML */
#define MHD_HTTP_HEADER_REFRESH "Refresh"
/* Permanent. RFC 8555, Section 6.5.1: Automatic Certificate Management Environment (ACME) */
#define MHD_HTTP_HEADER_REPLAY_NONCE "Replay-Nonce"
/* Permanent. RFC-ietf-httpbis-digest-headers-13, Section 3: Digest Fields */
#define MHD_HTTP_HEADER_REPR_DIGEST "Repr-Digest"
/* Permanent. RFC 6638: Scheduling Extensions to CalDAV */
#define MHD_HTTP_HEADER_SCHEDULE_REPLY "Schedule-Reply"
/* Permanent. RFC 6338: Scheduling Extensions to CalDAV */
#define MHD_HTTP_HEADER_SCHEDULE_TAG "Schedule-Tag"
/* Permanent. Fetch */
#define MHD_HTTP_HEADER_SEC_PURPOSE "Sec-Purpose"
/* Permanent. RFC 8473: Token Binding over HTTP */
#define MHD_HTTP_HEADER_SEC_TOKEN_BINDING "Sec-Token-Binding"
/* Permanent. RFC 6455: The WebSocket Protocol */
#define MHD_HTTP_HEADER_SEC_WEBSOCKET_ACCEPT "Sec-WebSocket-Accept"
/* Permanent. RFC 6455: The WebSocket Protocol */
#define MHD_HTTP_HEADER_SEC_WEBSOCKET_EXTENSIONS "Sec-WebSocket-Extensions"
/* Permanent. RFC 6455: The WebSocket Protocol */
#define MHD_HTTP_HEADER_SEC_WEBSOCKET_KEY "Sec-WebSocket-Key"
/* Permanent. RFC 6455: The WebSocket Protocol */
#define MHD_HTTP_HEADER_SEC_WEBSOCKET_PROTOCOL "Sec-WebSocket-Protocol"
/* Permanent. RFC 6455: The WebSocket Protocol */
#define MHD_HTTP_HEADER_SEC_WEBSOCKET_VERSION "Sec-WebSocket-Version"
/* Permanent. Server Timing */
#define MHD_HTTP_HEADER_SERVER_TIMING "Server-Timing"
/* Permanent. RFC 6265: HTTP State Management Mechanism */
#define MHD_HTTP_HEADER_SET_COOKIE "Set-Cookie"
/* Permanent. RFC-ietf-httpbis-message-signatures-19, Section 4.2: HTTP Message Signatures */
#define MHD_HTTP_HEADER_SIGNATURE "Signature"
/* Permanent. RFC-ietf-httpbis-message-signatures-19, Section 4.1: HTTP Message Signatures */
#define MHD_HTTP_HEADER_SIGNATURE_INPUT "Signature-Input"
/* Permanent. RFC 5023: The Atom Publishing Protocol */
#define MHD_HTTP_HEADER_SLUG "SLUG"
/* Permanent. Simple Object Access Protocol (SOAP) 1.1 */
#define MHD_HTTP_HEADER_SOAPACTION "SoapAction"
/* Permanent. RFC 2518: HTTP Extensions for Distributed Authoring -- WEBDAV */
#define MHD_HTTP_HEADER_STATUS_URI "Status-URI"
/* Permanent. RFC 6797: HTTP Strict Transport Security (HSTS) */
#define MHD_HTTP_HEADER_STRICT_TRANSPORT_SECURITY "Strict-Transport-Security"
/* Permanent. RFC 8594: The Sunset HTTP Header Field */
#define MHD_HTTP_HEADER_SUNSET "Sunset"
/* Permanent. Edge Architecture Specification */
#define MHD_HTTP_HEADER_SURROGATE_CAPABILITY "Surrogate-Capability"
/* Permanent. Edge Architecture Specification */
#define MHD_HTTP_HEADER_SURROGATE_CONTROL "Surrogate-Control"
/* Permanent. RFC 2295: Transparent Content Negotiation in HTTP */
#define MHD_HTTP_HEADER_TCN "TCN"
/* Permanent. RFC 4918: HTTP Extensions for Web Distributed Authoring and Versioning (WebDAV) */
#define MHD_HTTP_HEADER_TIMEOUT "Timeout"
/* Permanent. RFC 8030, Section 5.4: Generic Event Delivery Using HTTP Push */
#define MHD_HTTP_HEADER_TOPIC "Topic"
/* Permanent. Trace Context */
#define MHD_HTTP_HEADER_TRACEPARENT "Traceparent"
/* Permanent. Trace Context */
#define MHD_HTTP_HEADER_TRACESTATE "Tracestate"
/* Permanent. RFC 8030, Section 5.2: Generic Event Delivery Using HTTP Push */
#define MHD_HTTP_HEADER_TTL "TTL"
/* Permanent. RFC 8030, Section 5.3: Generic Event Delivery Using HTTP Push */
#define MHD_HTTP_HEADER_URGENCY "Urgency"
/* Permanent. RFC 2295: Transparent Content Negotiation in HTTP */
#define MHD_HTTP_HEADER_VARIANT_VARY "Variant-Vary"
/* Permanent. RFC-ietf-httpbis-digest-headers-13, Section 4: Digest Fields */
#define MHD_HTTP_HEADER_WANT_CONTENT_DIGEST "Want-Content-Digest"
/* Permanent. RFC-ietf-httpbis-digest-headers-13, Section 4: Digest Fields */
#define MHD_HTTP_HEADER_WANT_REPR_DIGEST "Want-Repr-Digest"
/* Permanent. Fetch */
#define MHD_HTTP_HEADER_X_CONTENT_TYPE_OPTIONS "X-Content-Type-Options"
/* Permanent. HTML */
#define MHD_HTTP_HEADER_X_FRAME_OPTIONS "X-Frame-Options"
/* Provisional. AMP-Cache-Transform HTTP request header */
#define MHD_HTTP_HEADER_AMP_CACHE_TRANSFORM "AMP-Cache-Transform"
/* Provisional. OSLC Configuration Management Version 1.0. Part 3: Configuration Specification */
#define MHD_HTTP_HEADER_CONFIGURATION_CONTEXT "Configuration-Context"
/* Provisional. RFC 6017: Electronic Data Interchange - Internet Integration (EDIINT) Features Header Field */
#define MHD_HTTP_HEADER_EDIINT_FEATURES "EDIINT-Features"
/* Provisional. OData Version 4.01 Part 1: Protocol; OASIS; Chet_Ensign */
#define MHD_HTTP_HEADER_ISOLATION "Isolation"
/* Provisional. Permissions Policy */
#define MHD_HTTP_HEADER_PERMISSIONS_POLICY "Permissions-Policy"
/* Provisional. Repeatable Requests Version 1.0; OASIS; Chet_Ensign */
#define MHD_HTTP_HEADER_REPEATABILITY_CLIENT_ID "Repeatability-Client-ID"
/* Provisional. Repeatable Requests Version 1.0; OASIS; Chet_Ensign */
#define MHD_HTTP_HEADER_REPEATABILITY_FIRST_SENT "Repeatability-First-Sent"
/* Provisional. Repeatable Requests Version 1.0; OASIS; Chet_Ensign */
#define MHD_HTTP_HEADER_REPEATABILITY_REQUEST_ID "Repeatability-Request-ID"
/* Provisional. Repeatable Requests Version 1.0; OASIS; Chet_Ensign */
#define MHD_HTTP_HEADER_REPEATABILITY_RESULT "Repeatability-Result"
/* Provisional. Reporting API */
#define MHD_HTTP_HEADER_REPORTING_ENDPOINTS "Reporting-Endpoints"
/* Provisional. Global Privacy Control (GPC) */
#define MHD_HTTP_HEADER_SEC_GPC "Sec-GPC"
/* Provisional. Resource Timing Level 1 */
#define MHD_HTTP_HEADER_TIMING_ALLOW_ORIGIN "Timing-Allow-Origin"
/* Deprecated. PEP - an Extension Mechanism for HTTP; status-change-http-experiments-to-historic */
#define MHD_HTTP_HEADER_C_PEP_INFO "C-PEP-Info"
/* Deprecated. White Paper: Joint Electronic Payment Initiative */
#define MHD_HTTP_HEADER_PROTOCOL_INFO "Protocol-Info"
/* Deprecated. White Paper: Joint Electronic Payment Initiative */
#define MHD_HTTP_HEADER_PROTOCOL_QUERY "Protocol-Query"
/* Obsoleted. Access Control for Cross-site Requests */
#define MHD_HTTP_HEADER_ACCESS_CONTROL "Access-Control"
/* Obsoleted. RFC 2774: An HTTP Extension Framework; status-change-http-experiments-to-historic */
#define MHD_HTTP_HEADER_C_EXT "C-Ext"
/* Obsoleted. RFC 2774: An HTTP Extension Framework; status-change-http-experiments-to-historic */
#define MHD_HTTP_HEADER_C_MAN "C-Man"
/* Obsoleted. RFC 2774: An HTTP Extension Framework; status-change-http-experiments-to-historic */
#define MHD_HTTP_HEADER_C_OPT "C-Opt"
/* Obsoleted. PEP - an Extension Mechanism for HTTP; status-change-http-experiments-to-historic */
#define MHD_HTTP_HEADER_C_PEP "C-PEP"
/* Obsoleted. RFC 2068: Hypertext Transfer Protocol -- HTTP/1.1; RFC 2616: Hypertext Transfer Protocol -- HTTP/1.1 */
#define MHD_HTTP_HEADER_CONTENT_BASE "Content-Base"
/* Obsoleted. RFC 2616, Section 14.15: Hypertext Transfer Protocol -- HTTP/1.1; RFC 7231, Appendix B: Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content */
#define MHD_HTTP_HEADER_CONTENT_MD5 "Content-MD5"
/* Obsoleted. HTML 4.01 Specification */
#define MHD_HTTP_HEADER_CONTENT_SCRIPT_TYPE "Content-Script-Type"
/* Obsoleted. HTML 4.01 Specification */
#define MHD_HTTP_HEADER_CONTENT_STYLE_TYPE "Content-Style-Type"
/* Obsoleted. RFC 2068: Hypertext Transfer Protocol -- HTTP/1.1 */
#define MHD_HTTP_HEADER_CONTENT_VERSION "Content-Version"
/* Obsoleted. RFC 2965: HTTP State Management Mechanism; RFC 6265: HTTP State Management Mechanism */
#define MHD_HTTP_HEADER_COOKIE2 "Cookie2"
/* Obsoleted. HTML 4.01 Specification */
#define MHD_HTTP_HEADER_DEFAULT_STYLE "Default-Style"
/* Obsoleted. RFC 2068: Hypertext Transfer Protocol -- HTTP/1.1 */
#define MHD_HTTP_HEADER_DERIVED_FROM "Derived-From"
/* Obsoleted. RFC 3230: Instance Digests in HTTP; RFC-ietf-httpbis-digest-headers-13, Section 1.3: Digest Fields */
#define MHD_HTTP_HEADER_DIGEST "Digest"
/* Obsoleted. RFC 2774: An HTTP Extension Framework; status-change-http-experiments-to-historic */
#define MHD_HTTP_HEADER_EXT "Ext"
/* Obsoleted. Implementation of OPS Over HTTP */
#define MHD_HTTP_HEADER_GETPROFILE "GetProfile"
/* Obsoleted. RFC 7540, Section 3.2.1: Hypertext Transfer Protocol Version 2 (HTTP/2) */
#define MHD_HTTP_HEADER_HTTP2_SETTINGS "HTTP2-Settings"
/* Obsoleted. RFC 2774: An HTTP Extension Framework; status-change-http-experiments-to-historic */
#define MHD_HTTP_HEADER_MAN "Man"
/* Obsoleted. Access Control for Cross-site Requests */
#define MHD_HTTP_HEADER_METHOD_CHECK "Method-Check"
/* Obsoleted. Access Control for Cross-site Requests */
#define MHD_HTTP_HEADER_METHOD_CHECK_EXPIRES "Method-Check-Expires"
/* Obsoleted. RFC 2774: An HTTP Extension Framework; status-change-http-experiments-to-historic */
#define MHD_HTTP_HEADER_OPT "Opt"
/* Obsoleted. The Platform for Privacy Preferences 1.0 (P3P1.0) Specification */
#define MHD_HTTP_HEADER_P3P "P3P"
/* Obsoleted. PEP - an Extension Mechanism for HTTP */
#define MHD_HTTP_HEADER_PEP "PEP"
/* Obsoleted. PEP - an Extension Mechanism for HTTP */
#define MHD_HTTP_HEADER_PEP_INFO "Pep-Info"
/* Obsoleted. PICS Label Distribution Label Syntax and Communication Protocols */
#define MHD_HTTP_HEADER_PICS_LABEL "PICS-Label"
/* Obsoleted. Implementation of OPS Over HTTP */
#define MHD_HTTP_HEADER_PROFILEOBJECT "ProfileObject"
/* Obsoleted. PICS Label Distribution Label Syntax and Communication Protocols */
#define MHD_HTTP_HEADER_PROTOCOL "Protocol"
/* Obsoleted. PICS Label Distribution Label Syntax and Communication Protocols */
#define MHD_HTTP_HEADER_PROTOCOL_REQUEST "Protocol-Request"
/* Obsoleted. Notification for Proxy Caches */
#define MHD_HTTP_HEADER_PROXY_FEATURES "Proxy-Features"
/* Obsoleted. Notification for Proxy Caches */
#define MHD_HTTP_HEADER_PROXY_INSTRUCTION "Proxy-Instruction"
/* Obsoleted. RFC 2068: Hypertext Transfer Protocol -- HTTP/1.1 */
#define MHD_HTTP_HEADER_PUBLIC "Public"
/* Obsoleted. Access Control for Cross-site Requests */
#define MHD_HTTP_HEADER_REFERER_ROOT "Referer-Root"
/* Obsoleted. RFC 2310: The Safe Response Header Field; status-change-http-experiments-to-historic */
#define MHD_HTTP_HEADER_SAFE "Safe"
/* Obsoleted. RFC 2660: The Secure HyperText Transfer Protocol; status-change-http-experiments-to-historic */
#define MHD_HTTP_HEADER_SECURITY_SCHEME "Security-Scheme"
/* Obsoleted. RFC 2965: HTTP State Management Mechanism; RFC 6265: HTTP State Management Mechanism */
#define MHD_HTTP_HEADER_SET_COOKIE2 "Set-Cookie2"
/* Obsoleted. Implementation of OPS Over HTTP */
#define MHD_HTTP_HEADER_SETPROFILE "SetProfile"
/* Obsoleted. RFC 2068: Hypertext Transfer Protocol -- HTTP/1.1 */
#define MHD_HTTP_HEADER_URI "URI"
/* Obsoleted. RFC 3230: Instance Digests in HTTP; RFC-ietf-httpbis-digest-headers-13, Section 1.3: Digest Fields */
#define MHD_HTTP_HEADER_WANT_DIGEST "Want-Digest"
/* Obsoleted. RFC9111, Section 5.5: HTTP Caching */
#define MHD_HTTP_HEADER_WARNING "Warning"
/* Headers removed from the registry. Do not use! */
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_COMPLIANCE "Compliance"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_CONTENT_TRANSFER_ENCODING "Content-Transfer-Encoding"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_COST "Cost"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_MESSAGE_ID "Message-ID"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_NON_COMPLIANCE "Non-Compliance"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_OPTIONAL "Optional"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_RESOLUTION_HINT "Resolution-Hint"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_RESOLVER_LOCATION "Resolver-Location"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_SUBOK "SubOK"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_SUBST "Subst"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_TITLE "Title"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_UA_COLOR "UA-Color"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_UA_MEDIA "UA-Media"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_UA_PIXELS "UA-Pixels"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_UA_RESOLUTION "UA-Resolution"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_UA_WINDOWPIXELS "UA-Windowpixels"
/* Obsoleted. RFC4229 */
#define MHD_HTTP_HEADER_VERSION "Version"
/* Obsoleted. W3C Mobile Web Best Practices Working Group */
#define MHD_HTTP_HEADER_X_DEVICE_ACCEPT "X-Device-Accept"
/* Obsoleted. W3C Mobile Web Best Practices Working Group */
#define MHD_HTTP_HEADER_X_DEVICE_ACCEPT_CHARSET "X-Device-Accept-Charset"
/* Obsoleted. W3C Mobile Web Best Practices Working Group */
#define MHD_HTTP_HEADER_X_DEVICE_ACCEPT_ENCODING "X-Device-Accept-Encoding"
/* Obsoleted. W3C Mobile Web Best Practices Working Group */
#define MHD_HTTP_HEADER_X_DEVICE_ACCEPT_LANGUAGE "X-Device-Accept-Language"
/* Obsoleted. W3C Mobile Web Best Practices Working Group */
#define MHD_HTTP_HEADER_X_DEVICE_USER_AGENT "X-Device-User-Agent"
/** @} */ /* end of group headers */
/**
* @defgroup versions HTTP versions
* These strings should be used to match against the first line of the
* HTTP header.
* @{
*/
#define MHD_HTTP_VERSION_1_0 "HTTP/1.0"
#define MHD_HTTP_VERSION_1_1 "HTTP/1.1"
/** @} */ /* end of group versions */
/**
* @defgroup methods HTTP methods
* HTTP methods (as strings).
* See: https://www.iana.org/assignments/http-methods/http-methods.xml
* Registry export date: 2023-10-02
* @{
*/
/* Main HTTP methods. */
/* Safe. Idempotent. RFC9110, Section 9.3.1. */
#define MHD_HTTP_METHOD_GET "GET"
/* Safe. Idempotent. RFC9110, Section 9.3.2. */
#define MHD_HTTP_METHOD_HEAD "HEAD"
/* Not safe. Not idempotent. RFC9110, Section 9.3.3. */
#define MHD_HTTP_METHOD_POST "POST"
/* Not safe. Idempotent. RFC9110, Section 9.3.4. */
#define MHD_HTTP_METHOD_PUT "PUT"
/* Not safe. Idempotent. RFC9110, Section 9.3.5. */
#define MHD_HTTP_METHOD_DELETE "DELETE"
/* Not safe. Not idempotent. RFC9110, Section 9.3.6. */
#define MHD_HTTP_METHOD_CONNECT "CONNECT"
/* Safe. Idempotent. RFC9110, Section 9.3.7. */
#define MHD_HTTP_METHOD_OPTIONS "OPTIONS"
/* Safe. Idempotent. RFC9110, Section 9.3.8. */
#define MHD_HTTP_METHOD_TRACE "TRACE"
/* Additional HTTP methods. */
/* Not safe. Idempotent. RFC3744, Section 8.1. */
#define MHD_HTTP_METHOD_ACL "ACL"
/* Not safe. Idempotent. RFC3253, Section 12.6. */
#define MHD_HTTP_METHOD_BASELINE_CONTROL "BASELINE-CONTROL"
/* Not safe. Idempotent. RFC5842, Section 4. */
#define MHD_HTTP_METHOD_BIND "BIND"
/* Not safe. Idempotent. RFC3253, Section 4.4, Section 9.4. */
#define MHD_HTTP_METHOD_CHECKIN "CHECKIN"
/* Not safe. Idempotent. RFC3253, Section 4.3, Section 8.8. */
#define MHD_HTTP_METHOD_CHECKOUT "CHECKOUT"
/* Not safe. Idempotent. RFC4918, Section 9.8. */
#define MHD_HTTP_METHOD_COPY "COPY"
/* Not safe. Idempotent. RFC3253, Section 8.2. */
#define MHD_HTTP_METHOD_LABEL "LABEL"
/* Not safe. Idempotent. RFC2068, Section 19.6.1.2. */
#define MHD_HTTP_METHOD_LINK "LINK"
/* Not safe. Not idempotent. RFC4918, Section 9.10. */
#define MHD_HTTP_METHOD_LOCK "LOCK"
/* Not safe. Idempotent. RFC3253, Section 11.2. */
#define MHD_HTTP_METHOD_MERGE "MERGE"
/* Not safe. Idempotent. RFC3253, Section 13.5. */
#define MHD_HTTP_METHOD_MKACTIVITY "MKACTIVITY"
/* Not safe. Idempotent. RFC4791, Section 5.3.1; RFC8144, Section 2.3. */
#define MHD_HTTP_METHOD_MKCALENDAR "MKCALENDAR"
/* Not safe. Idempotent. RFC4918, Section 9.3; RFC5689, Section 3; RFC8144, Section 2.3. */
#define MHD_HTTP_METHOD_MKCOL "MKCOL"
/* Not safe. Idempotent. RFC4437, Section 6. */
#define MHD_HTTP_METHOD_MKREDIRECTREF "MKREDIRECTREF"
/* Not safe. Idempotent. RFC3253, Section 6.3. */
#define MHD_HTTP_METHOD_MKWORKSPACE "MKWORKSPACE"
/* Not safe. Idempotent. RFC4918, Section 9.9. */
#define MHD_HTTP_METHOD_MOVE "MOVE"
/* Not safe. Idempotent. RFC3648, Section 7. */
#define MHD_HTTP_METHOD_ORDERPATCH "ORDERPATCH"
/* Not safe. Not idempotent. RFC5789, Section 2. */
#define MHD_HTTP_METHOD_PATCH "PATCH"
/* Safe. Idempotent. RFC9113, Section 3.4. */
#define MHD_HTTP_METHOD_PRI "PRI"
/* Safe. Idempotent. RFC4918, Section 9.1; RFC8144, Section 2.1. */
#define MHD_HTTP_METHOD_PROPFIND "PROPFIND"
/* Not safe. Idempotent. RFC4918, Section 9.2; RFC8144, Section 2.2. */
#define MHD_HTTP_METHOD_PROPPATCH "PROPPATCH"
/* Not safe. Idempotent. RFC5842, Section 6. */
#define MHD_HTTP_METHOD_REBIND "REBIND"
/* Safe. Idempotent. RFC3253, Section 3.6; RFC8144, Section 2.1. */
#define MHD_HTTP_METHOD_REPORT "REPORT"
/* Safe. Idempotent. RFC5323, Section 2. */
#define MHD_HTTP_METHOD_SEARCH "SEARCH"
/* Not safe. Idempotent. RFC5842, Section 5. */
#define MHD_HTTP_METHOD_UNBIND "UNBIND"
/* Not safe. Idempotent. RFC3253, Section 4.5. */
#define MHD_HTTP_METHOD_UNCHECKOUT "UNCHECKOUT"
/* Not safe. Idempotent. RFC2068, Section 19.6.1.3. */
#define MHD_HTTP_METHOD_UNLINK "UNLINK"
/* Not safe. Idempotent. RFC4918, Section 9.11. */
#define MHD_HTTP_METHOD_UNLOCK "UNLOCK"
/* Not safe. Idempotent. RFC3253, Section 7.1. */
#define MHD_HTTP_METHOD_UPDATE "UPDATE"
/* Not safe. Idempotent. RFC4437, Section 7. */
#define MHD_HTTP_METHOD_UPDATEREDIRECTREF "UPDATEREDIRECTREF"
/* Not safe. Idempotent. RFC3253, Section 3.5. */
#define MHD_HTTP_METHOD_VERSION_CONTROL "VERSION-CONTROL"
/* Not safe. Not idempotent. RFC9110, Section 18.2. */
#define MHD_HTTP_METHOD_ASTERISK "*"
/** @} */ /* end of group methods */
/**
* @defgroup postenc HTTP POST encodings
* See also: http://www.w3.org/TR/html4/interact/forms.html#h-17.13.4
* @{
*/
#define MHD_HTTP_POST_ENCODING_FORM_URLENCODED \
"application/x-www-form-urlencoded"
#define MHD_HTTP_POST_ENCODING_MULTIPART_FORMDATA "multipart/form-data"
/** @} */ /* end of group postenc */
/**
* @brief Handle for the daemon (listening on a socket for HTTP traffic).
* @ingroup event
*/
struct MHD_Daemon;
/**
* @brief Handle for a connection / HTTP request.
*
* With HTTP/1.1, multiple requests can be run over the same
* connection. However, MHD will only show one request per TCP
* connection to the client at any given time.
* @ingroup request
*/
struct MHD_Connection;
/**
* @brief Handle for a response.
* @ingroup response
*/
struct MHD_Response;
/**
* @brief Handle for POST processing.
* @ingroup response
*/
struct MHD_PostProcessor;
/**
* @brief Flags for the `struct MHD_Daemon`.
*
* Note that MHD will run automatically in background thread(s) only
* if #MHD_USE_INTERNAL_POLLING_THREAD is used. Otherwise caller (application)
* must use #MHD_run() or #MHD_run_from_select() to have MHD processed
* network connections and data.
*
* Starting the daemon may also fail if a particular option is not
* implemented or not supported on the target platform (i.e. no
* support for TLS, epoll or IPv6).
*/
enum MHD_FLAG
{
/**
* No options selected.
*/
MHD_NO_FLAG = 0,
/**
* Print errors messages to custom error logger or to `stderr` if
* custom error logger is not set.
* @sa ::MHD_OPTION_EXTERNAL_LOGGER
*/
MHD_USE_ERROR_LOG = 1,
/**
* Run in debug mode. If this flag is used, the library should
* print error messages and warnings to `stderr`.
*/
MHD_USE_DEBUG = 1,
/**
* Run in HTTPS mode. The modern protocol is called TLS.
*/
MHD_USE_TLS = 2,
/** @deprecated */
MHD_USE_SSL = 2,
#if 0
/* let's do this later once versions that define MHD_USE_TLS a more widely deployed. */
#define MHD_USE_SSL \
_MHD_DEPR_IN_MACRO ("Value MHD_USE_SSL is deprecated, use MHD_USE_TLS") \
MHD_USE_TLS
#endif
/**
* Run using one thread per connection.
* Must be used only with #MHD_USE_INTERNAL_POLLING_THREAD.
*
* If #MHD_USE_ITC is also not used, closed and expired connections may only
* be cleaned up internally when a new connection is received.
* Consider adding of #MHD_USE_ITC flag to have faster internal cleanups
* at very minor increase in system resources usage.
*/
MHD_USE_THREAD_PER_CONNECTION = 4,
/**
* Run using an internal thread (or thread pool) for sockets sending
* and receiving and data processing. Without this flag MHD will not
* run automatically in background thread(s).
* If this flag is set, #MHD_run() and #MHD_run_from_select() couldn't
* be used.
* This flag is set explicitly by #MHD_USE_POLL_INTERNAL_THREAD and
* by #MHD_USE_EPOLL_INTERNAL_THREAD.
* When this flag is not set, MHD run in "external" polling mode.
*/
MHD_USE_INTERNAL_POLLING_THREAD = 8,
/** @deprecated */
MHD_USE_SELECT_INTERNALLY = 8,
#if 0 /* Will be marked for real deprecation later. */
#define MHD_USE_SELECT_INTERNALLY \
_MHD_DEPR_IN_MACRO ( \
"Value MHD_USE_SELECT_INTERNALLY is deprecated, use MHD_USE_INTERNAL_POLLING_THREAD instead") \
MHD_USE_INTERNAL_POLLING_THREAD
#endif /* 0 */
/**
* Run using the IPv6 protocol (otherwise, MHD will just support
* IPv4). If you want MHD to support IPv4 and IPv6 using a single
* socket, pass #MHD_USE_DUAL_STACK, otherwise, if you only pass
* this option, MHD will try to bind to IPv6-only (resulting in
* no IPv4 support).
*/
MHD_USE_IPv6 = 16,
/**
* Be pedantic about the protocol (as opposed to as tolerant as
* possible).
* This flag is equivalent to setting 1 as #MHD_OPTION_CLIENT_DISCIPLINE_LVL
* value.
* @sa #MHD_OPTION_CLIENT_DISCIPLINE_LVL
*/
MHD_USE_PEDANTIC_CHECKS = 32,
#if 0 /* Will be marked for real deprecation later. */
#define MHD_USE_PEDANTIC_CHECKS \
_MHD_DEPR_IN_MACRO ( \
"Flag MHD_USE_PEDANTIC_CHECKS is deprecated, " \
"use option MHD_OPTION_CLIENT_DISCIPLINE_LVL instead") \
32
#endif /* 0 */
/**
* Use `poll()` instead of `select()` for polling sockets.
* This allows sockets with `fd >= FD_SETSIZE`.
* This option is not compatible with an "external" polling mode
* (as there is no API to get the file descriptors for the external
* poll() from MHD) and must also not be used in combination
* with #MHD_USE_EPOLL.
* @sa ::MHD_FEATURE_POLL, #MHD_USE_POLL_INTERNAL_THREAD
*/
MHD_USE_POLL = 64,
/**
* Run using an internal thread (or thread pool) doing `poll()`.
* @sa ::MHD_FEATURE_POLL, #MHD_USE_POLL, #MHD_USE_INTERNAL_POLLING_THREAD
*/
MHD_USE_POLL_INTERNAL_THREAD = MHD_USE_POLL | MHD_USE_INTERNAL_POLLING_THREAD,
/** @deprecated */
MHD_USE_POLL_INTERNALLY = MHD_USE_POLL | MHD_USE_INTERNAL_POLLING_THREAD,
#if 0 /* Will be marked for real deprecation later. */
#define MHD_USE_POLL_INTERNALLY \
_MHD_DEPR_IN_MACRO ( \
"Value MHD_USE_POLL_INTERNALLY is deprecated, use MHD_USE_POLL_INTERNAL_THREAD instead") \
MHD_USE_POLL_INTERNAL_THREAD
#endif /* 0 */
/**
* Suppress (automatically) adding the 'Date:' header to HTTP responses.
* This option should ONLY be used on systems that do not have a clock
* and that DO provide other mechanisms for cache control. See also
* RFC 2616, section 14.18 (exception 3).
*/
MHD_USE_SUPPRESS_DATE_NO_CLOCK = 128,
/** @deprecated */
MHD_SUPPRESS_DATE_NO_CLOCK = 128,
#if 0 /* Will be marked for real deprecation later. */
#define MHD_SUPPRESS_DATE_NO_CLOCK \
_MHD_DEPR_IN_MACRO ( \
"Value MHD_SUPPRESS_DATE_NO_CLOCK is deprecated, use MHD_USE_SUPPRESS_DATE_NO_CLOCK instead") \
MHD_USE_SUPPRESS_DATE_NO_CLOCK
#endif /* 0 */
/**
* Run without a listen socket. This option only makes sense if
* #MHD_add_connection is to be used exclusively to connect HTTP
* clients to the HTTP server. This option is incompatible with
* using a thread pool; if it is used, #MHD_OPTION_THREAD_POOL_SIZE
* is ignored.
*/
MHD_USE_NO_LISTEN_SOCKET = 256,
/**
* Use `epoll()` instead of `select()` or `poll()` for the event loop.
* This option is only available on some systems; using the option on
* systems without epoll will cause #MHD_start_daemon to fail. Using
* this option is not supported with #MHD_USE_THREAD_PER_CONNECTION.
* @sa ::MHD_FEATURE_EPOLL
*/
MHD_USE_EPOLL = 512,
/** @deprecated */
MHD_USE_EPOLL_LINUX_ONLY = 512,
#if 0 /* Will be marked for real deprecation later. */
#define MHD_USE_EPOLL_LINUX_ONLY \
_MHD_DEPR_IN_MACRO ( \
"Value MHD_USE_EPOLL_LINUX_ONLY is deprecated, use MHD_USE_EPOLL") \
MHD_USE_EPOLL
#endif /* 0 */
/**
* Run using an internal thread (or thread pool) doing `epoll` polling.
* This option is only available on certain platforms; using the option on
* platform without `epoll` support will cause #MHD_start_daemon to fail.
* @sa ::MHD_FEATURE_EPOLL, #MHD_USE_EPOLL, #MHD_USE_INTERNAL_POLLING_THREAD
*/
MHD_USE_EPOLL_INTERNAL_THREAD = MHD_USE_EPOLL
| MHD_USE_INTERNAL_POLLING_THREAD,
/** @deprecated */
MHD_USE_EPOLL_INTERNALLY = MHD_USE_EPOLL | MHD_USE_INTERNAL_POLLING_THREAD,
/** @deprecated */
MHD_USE_EPOLL_INTERNALLY_LINUX_ONLY = MHD_USE_EPOLL
| MHD_USE_INTERNAL_POLLING_THREAD,
#if 0 /* Will be marked for real deprecation later. */
#define MHD_USE_EPOLL_INTERNALLY \
_MHD_DEPR_IN_MACRO ( \
"Value MHD_USE_EPOLL_INTERNALLY is deprecated, use MHD_USE_EPOLL_INTERNAL_THREAD") \
MHD_USE_EPOLL_INTERNAL_THREAD
/** @deprecated */
#define MHD_USE_EPOLL_INTERNALLY_LINUX_ONLY \
_MHD_DEPR_IN_MACRO ( \
"Value MHD_USE_EPOLL_INTERNALLY_LINUX_ONLY is deprecated, use MHD_USE_EPOLL_INTERNAL_THREAD") \
MHD_USE_EPOLL_INTERNAL_THREAD
#endif /* 0 */
/**
* Use inter-thread communication channel.
* #MHD_USE_ITC can be used with #MHD_USE_INTERNAL_POLLING_THREAD
* and is ignored with any "external" sockets polling.
* It's required for use of #MHD_quiesce_daemon
* or #MHD_add_connection.
* This option is enforced by #MHD_ALLOW_SUSPEND_RESUME or
* #MHD_USE_NO_LISTEN_SOCKET.
* #MHD_USE_ITC is always used automatically on platforms
* where select()/poll()/other ignore shutdown of listen
* socket.
*/
MHD_USE_ITC = 1024,
/** @deprecated */
MHD_USE_PIPE_FOR_SHUTDOWN = 1024,
#if 0 /* Will be marked for real deprecation later. */
#define MHD_USE_PIPE_FOR_SHUTDOWN \
_MHD_DEPR_IN_MACRO ( \
"Value MHD_USE_PIPE_FOR_SHUTDOWN is deprecated, use MHD_USE_ITC") \
MHD_USE_ITC
#endif /* 0 */
/**
* Use a single socket for IPv4 and IPv6.
*/
MHD_USE_DUAL_STACK = MHD_USE_IPv6 | 2048,
/**
* Enable `turbo`. Disables certain calls to `shutdown()`,
* enables aggressive non-blocking optimistic reads and
* other potentially unsafe optimizations.
* Most effects only happen with #MHD_USE_EPOLL.
*/
MHD_USE_TURBO = 4096,
/** @deprecated */
MHD_USE_EPOLL_TURBO = 4096,
#if 0 /* Will be marked for real deprecation later. */
#define MHD_USE_EPOLL_TURBO \
_MHD_DEPR_IN_MACRO ( \
"Value MHD_USE_EPOLL_TURBO is deprecated, use MHD_USE_TURBO") \
MHD_USE_TURBO
#endif /* 0 */
/**
* Enable suspend/resume functions, which also implies setting up
* ITC to signal resume.
*/
MHD_ALLOW_SUSPEND_RESUME = 8192 | MHD_USE_ITC,
/** @deprecated */
MHD_USE_SUSPEND_RESUME = 8192 | MHD_USE_ITC,
#if 0 /* Will be marked for real deprecation later. */
#define MHD_USE_SUSPEND_RESUME \
_MHD_DEPR_IN_MACRO ( \
"Value MHD_USE_SUSPEND_RESUME is deprecated, use MHD_ALLOW_SUSPEND_RESUME instead") \
MHD_ALLOW_SUSPEND_RESUME
#endif /* 0 */
/**
* Enable TCP_FASTOPEN option. This option is only available on Linux with a
* kernel >= 3.6. On other systems, using this option cases #MHD_start_daemon
* to fail.
*/
MHD_USE_TCP_FASTOPEN = 16384,
/**
* You need to set this option if you want to use HTTP "Upgrade".
* "Upgrade" may require usage of additional internal resources,
* which we do not want to use unless necessary.
*/
MHD_ALLOW_UPGRADE = 32768,
/**
* Automatically use best available polling function.
* Choice of polling function is also depend on other daemon options.
* If #MHD_USE_INTERNAL_POLLING_THREAD is specified then epoll, poll() or
* select() will be used (listed in decreasing preference order, first
* function available on system will be used).
* If #MHD_USE_THREAD_PER_CONNECTION is specified then poll() or select()
* will be used.
* If those flags are not specified then epoll or select() will be
* used (as the only suitable for MHD_get_fdset())
*/
MHD_USE_AUTO = 65536,
/**
* Run using an internal thread (or thread pool) with best available on
* system polling function.
* This is combination of #MHD_USE_AUTO and #MHD_USE_INTERNAL_POLLING_THREAD
* flags.
*/
MHD_USE_AUTO_INTERNAL_THREAD = MHD_USE_AUTO | MHD_USE_INTERNAL_POLLING_THREAD,
/**
* Flag set to enable post-handshake client authentication
* (only useful in combination with #MHD_USE_TLS).
*/
MHD_USE_POST_HANDSHAKE_AUTH_SUPPORT = 1U << 17,
/**
* Flag set to enable TLS 1.3 early data. This has
* security implications, be VERY careful when using this.
*/
MHD_USE_INSECURE_TLS_EARLY_DATA = 1U << 18,
/**
* Indicates that MHD daemon will be used by application in single-threaded
* mode only. When this flag is set then application must call any MHD
* function only within a single thread.
* This flag turns off some internal thread-safety and allows MHD making
* some of the internal optimisations suitable only for single-threaded
* environment.
* Not compatible with #MHD_USE_INTERNAL_POLLING_THREAD.
* @note Available since #MHD_VERSION 0x00097707
*/
MHD_USE_NO_THREAD_SAFETY = 1U << 19
};
/**
* Type of a callback function used for logging by MHD.
*
* @param cls closure
* @param fm format string (`printf()`-style)
* @param ap arguments to @a fm
* @ingroup logging
*/
typedef void
(*MHD_LogCallback)(void *cls,
const char *fm,
va_list ap);
/**
* Function called to lookup the pre shared key (@a psk) for a given
* HTTP connection based on the @a username.
*
* @param cls closure
* @param connection the HTTPS connection
* @param username the user name claimed by the other side
* @param[out] psk to be set to the pre-shared-key; should be allocated with malloc(),
* will be freed by MHD
* @param[out] psk_size to be set to the number of bytes in @a psk
* @return 0 on success, -1 on errors
*/
typedef int
(*MHD_PskServerCredentialsCallback)(void *cls,
const struct MHD_Connection *connection,
const char *username,
void **psk,
size_t *psk_size);
/**
* Values for #MHD_OPTION_DIGEST_AUTH_NONCE_BIND_TYPE.
*
* These values can limit the scope of validity of MHD-generated nonces.
* Values can be combined with bitwise OR.
* Any value, except #MHD_DAUTH_BIND_NONCE_NONE, enforce function
* #MHD_digest_auth_check3() (and similar functions) to check nonce by
* re-generating it again with the same parameters, which is CPU-intensive
* operation.
* @note Available since #MHD_VERSION 0x00097701
*/
enum MHD_DAuthBindNonce
{
/**
* Generated nonces are valid for any request from any client until expired.
* This is default and recommended value.
* #MHD_digest_auth_check3() (and similar functions) would check only whether
* the nonce value that is used by client has been generated by MHD and not
* expired yet.
* It is recommended because RFC 7616 allows clients to use the same nonce
* for any request in the same "protection space".
* When checking client's authorisation requests CPU is loaded less if this
* value is used.
* This mode gives MHD maximum flexibility for nonces generation and can
* prevent possible nonce collisions (and corresponding log warning messages)
* when clients' requests are intensive.
* This value cannot be biwise-OR combined with other values.
*/
MHD_DAUTH_BIND_NONCE_NONE = 0,
/**
* Generated nonces are valid only for the same realm.
*/
MHD_DAUTH_BIND_NONCE_REALM = 1 << 0,
/**
* Generated nonces are valid only for the same URI (excluding parameters
* after '?' in URI) and request method (GET, POST etc).
* Not recommended unless "protection space" is limited to a single URI as
* RFC 7616 allows clients to re-use server-generated nonces for any URI
* in the same "protection space" which by default consists of all server
* URIs.
* Before #MHD_VERSION 0x00097701 this was default (and only supported)
* nonce bind type.
*/
MHD_DAUTH_BIND_NONCE_URI = 1 << 1,
/**
* Generated nonces are valid only for the same URI including URI parameters
* and request method (GET, POST etc).
* This value implies #MHD_DAUTH_BIND_NONCE_URI.
* Not recommended for that same reasons as #MHD_DAUTH_BIND_NONCE_URI.
*/
MHD_DAUTH_BIND_NONCE_URI_PARAMS = 1 << 2,
/**
* Generated nonces are valid only for the single client's IP.
* While it looks like security improvement, in practice the same client may
* jump from one IP to another (mobile or Wi-Fi handover, DHCP re-assignment,
* Multi-NAT, different proxy chain and other reasons), while IP address
* spoofing could be used relatively easily.
*/
MHD_DAUTH_BIND_NONCE_CLIENT_IP = 1 << 3
} _MHD_FLAGS_ENUM;
/**
* @brief MHD options.
*
* Passed in the varargs portion of #MHD_start_daemon.
*/
enum MHD_OPTION
{
/**
* No more options / last option. This is used
* to terminate the VARARGs list.
*/
MHD_OPTION_END = 0,
/**
* Maximum memory size per connection (followed by a `size_t`).
* Default is 32 kb (#MHD_POOL_SIZE_DEFAULT).
* Values above 128k are unlikely to result in much benefit, as half
* of the memory will be typically used for IO, and TCP buffers are
* unlikely to support window sizes above 64k on most systems.
* Values below 64 bytes are completely unusable.
* Since #MHD_VERSION 0x00097710 silently ignored if followed by zero value.
*/
MHD_OPTION_CONNECTION_MEMORY_LIMIT = 1,
/**
* Maximum number of concurrent connections to
* accept (followed by an `unsigned int`).
*/
MHD_OPTION_CONNECTION_LIMIT = 2,
/**
* After how many seconds of inactivity should a
* connection automatically be timed out? (followed
* by an `unsigned int`; use zero for no timeout).
* Values larger than (UINT64_MAX / 2000 - 1) will
* be clipped to this number.
*/
MHD_OPTION_CONNECTION_TIMEOUT = 3,
/**
* Register a function that should be called whenever a request has
* been completed (this can be used for application-specific clean
* up). Requests that have never been presented to the application
* (via #MHD_AccessHandlerCallback) will not result in
* notifications.
*
* This option should be followed by TWO pointers. First a pointer
* to a function of type #MHD_RequestCompletedCallback and second a
* pointer to a closure to pass to the request completed callback.
* The second pointer may be NULL.
*/
MHD_OPTION_NOTIFY_COMPLETED = 4,
/**
* Limit on the number of (concurrent) connections made to the
* server from the same IP address. Can be used to prevent one
* IP from taking over all of the allowed connections. If the
* same IP tries to establish more than the specified number of
* connections, they will be immediately rejected. The option
* should be followed by an `unsigned int`. The default is
* zero, which means no limit on the number of connections
* from the same IP address.
*/
MHD_OPTION_PER_IP_CONNECTION_LIMIT = 5,
/**
* Bind daemon to the supplied `struct sockaddr`. This option should
* be followed by a `struct sockaddr *`. If #MHD_USE_IPv6 is
* specified, the `struct sockaddr*` should point to a `struct
* sockaddr_in6`, otherwise to a `struct sockaddr_in`.
* Silently ignored if followed by NULL pointer.
* @deprecated Use #MHD_OPTION_SOCK_ADDR_LEN
*/
MHD_OPTION_SOCK_ADDR = 6,
/**
* Specify a function that should be called before parsing the URI from
* the client. The specified callback function can be used for processing
* the URI (including the options) before it is parsed. The URI after
* parsing will no longer contain the options, which maybe inconvenient for
* logging. This option should be followed by two arguments, the first
* one must be of the form
*
* void * my_logger(void *cls, const char *uri, struct MHD_Connection *con)
*
* where the return value will be passed as
* (`* req_cls`) in calls to the #MHD_AccessHandlerCallback
* when this request is processed later; returning a
* value of NULL has no special significance (however,
* note that if you return non-NULL, you can no longer
* rely on the first call to the access handler having
* `NULL == *req_cls` on entry;)
* "cls" will be set to the second argument following
* #MHD_OPTION_URI_LOG_CALLBACK. Finally, uri will
* be the 0-terminated URI of the request.
*
* Note that during the time of this call, most of the connection's
* state is not initialized (as we have not yet parsed the headers).
* However, information about the connecting client (IP, socket)
* is available.
*
* The specified function is called only once per request, therefore some
* programmers may use it to instantiate their own request objects, freeing
* them in the notifier #MHD_OPTION_NOTIFY_COMPLETED.
*/
MHD_OPTION_URI_LOG_CALLBACK = 7,
/**
* Memory pointer for the private key (key.pem) to be used by the
* HTTPS daemon. This option should be followed by a
* `const char *` argument.
* This should be used in conjunction with #MHD_OPTION_HTTPS_MEM_CERT.
*/
MHD_OPTION_HTTPS_MEM_KEY = 8,
/**
* Memory pointer for the certificate (cert.pem) to be used by the
* HTTPS daemon. This option should be followed by a
* `const char *` argument.
* This should be used in conjunction with #MHD_OPTION_HTTPS_MEM_KEY.
*/
MHD_OPTION_HTTPS_MEM_CERT = 9,
/**
* Daemon credentials type.
* Followed by an argument of type
* `gnutls_credentials_type_t`.
*/
MHD_OPTION_HTTPS_CRED_TYPE = 10,
/**
* Memory pointer to a `const char *` specifying the GnuTLS priorities string.
* If this options is not specified, then MHD will try the following strings:
* * "@LIBMICROHTTPD" (application-specific system-wide configuration)
* * "@SYSTEM" (system-wide configuration)
* * default GnuTLS priorities string
* * "NORMAL"
* The first configuration accepted by GnuTLS will be used.
* For more details see GnuTLS documentation for "Application-specific
* priority strings".
*/
MHD_OPTION_HTTPS_PRIORITIES = 11,
/**
* Pass a listen socket for MHD to use (systemd-style). If this
* option is used, MHD will not open its own listen socket(s). The
* argument passed must be of type `MHD_socket` and refer to an
* existing socket that has been bound to a port and is listening.
* If followed by MHD_INVALID_SOCKET value, MHD ignores this option
* and creates socket by itself.
*/
MHD_OPTION_LISTEN_SOCKET = 12,
/**
* Use the given function for logging error messages. This option
* must be followed by two arguments; the first must be a pointer to
* a function of type #MHD_LogCallback and the second a pointer
* `void *` which will be passed as the first argument to the log
* callback.
* Should be specified as the first option, otherwise some messages
* may be printed by standard MHD logger during daemon startup.
*
* Note that MHD will not generate any log messages
* if it was compiled without the "--enable-messages"
* flag being set.
*/
MHD_OPTION_EXTERNAL_LOGGER = 13,
/**
* Number (`unsigned int`) of threads in thread pool. Enable
* thread pooling by setting this value to to something
* greater than 1.
* Can be used only for daemons started with #MHD_USE_INTERNAL_POLLING_THREAD.
* Ignored if followed by zero value.
*/
MHD_OPTION_THREAD_POOL_SIZE = 14,
/**
* Additional options given in an array of `struct MHD_OptionItem`.
* The array must be terminated with an entry `{MHD_OPTION_END, 0, NULL}`.
* An example for code using #MHD_OPTION_ARRAY is:
*
* struct MHD_OptionItem ops[] = {
* { MHD_OPTION_CONNECTION_LIMIT, 100, NULL },
* { MHD_OPTION_CONNECTION_TIMEOUT, 10, NULL },
* { MHD_OPTION_END, 0, NULL }
* };
* d = MHD_start_daemon (0, 8080, NULL, NULL, dh, NULL,
* MHD_OPTION_ARRAY, ops,
* MHD_OPTION_END);
*
* For options that expect a single pointer argument, the
* 'value' member of the `struct MHD_OptionItem` is ignored.
* For options that expect two pointer arguments, the first
* argument must be cast to `intptr_t`.
*/
MHD_OPTION_ARRAY = 15,
/**
* Specify a function that should be called for unescaping escape
* sequences in URIs and URI arguments. Note that this function
* will NOT be used by the `struct MHD_PostProcessor`. If this
* option is not specified, the default method will be used which
* decodes escape sequences of the form "%HH". This option should
* be followed by two arguments, the first one must be of the form
*
* size_t my_unescaper(void *cls,
* struct MHD_Connection *c,
* char *s)
*
* where the return value must be the length of the value left in
* "s" (without the 0-terminator) and "s" should be updated. Note
* that the unescape function must not lengthen "s" (the result must
* be shorter than the input and must still be 0-terminated).
* However, it may also include binary zeros before the
* 0-termination. "cls" will be set to the second argument
* following #MHD_OPTION_UNESCAPE_CALLBACK.
*/
MHD_OPTION_UNESCAPE_CALLBACK = 16,
/**
* Memory pointer for the random values to be used by the Digest
* Auth module. This option should be followed by two arguments.
* First an integer of type `size_t` which specifies the size
* of the buffer pointed to by the second argument in bytes.
* The recommended size is between 8 and 32. If size is four or less
* then security could be lowered. Sizes more then 32 (or, probably
* more than 16 - debatable) will not increase security.
* Note that the application must ensure that the buffer of the
* second argument remains allocated and unmodified while the
* daemon is running.
* @sa #MHD_OPTION_DIGEST_AUTH_RANDOM_COPY
*/
MHD_OPTION_DIGEST_AUTH_RANDOM = 17,
/**
* Size of the internal array holding the map of the nonce and
* the nonce counter. This option should be followed by an `unsigend int`
* argument.
* The map size is 4 by default, which is enough to communicate with
* a single client at any given moment of time, but not enough to
* handle several clients simultaneously.
* If Digest Auth is not used, this option can be set to zero to minimise
* memory allocation.
*/
MHD_OPTION_NONCE_NC_SIZE = 18,
/**
* Desired size of the stack for threads created by MHD. Followed
* by an argument of type `size_t`. Use 0 for system default.
*/
MHD_OPTION_THREAD_STACK_SIZE = 19,
/**
* Memory pointer for the certificate (ca.pem) to be used by the
* HTTPS daemon for client authentication.
* This option should be followed by a `const char *` argument.
*/
MHD_OPTION_HTTPS_MEM_TRUST = 20,
/**
* Increment to use for growing the read buffer (followed by a
* `size_t`).
* Must not be higher than 1/4 of #MHD_OPTION_CONNECTION_MEMORY_LIMIT.
* Since #MHD_VERSION 0x00097710 silently ignored if followed by zero value.
*/
MHD_OPTION_CONNECTION_MEMORY_INCREMENT = 21,
/**
* Use a callback to determine which X.509 certificate should be
* used for a given HTTPS connection. This option should be
* followed by a argument of type `gnutls_certificate_retrieve_function2 *`.
* This option provides an
* alternative to #MHD_OPTION_HTTPS_MEM_KEY,
* #MHD_OPTION_HTTPS_MEM_CERT. You must use this version if
* multiple domains are to be hosted at the same IP address using
* TLS's Server Name Indication (SNI) extension. In this case,
* the callback is expected to select the correct certificate
* based on the SNI information provided. The callback is expected
* to access the SNI data using `gnutls_server_name_get()`.
* Using this option requires GnuTLS 3.0 or higher.
*/
MHD_OPTION_HTTPS_CERT_CALLBACK = 22,
/**
* When using #MHD_USE_TCP_FASTOPEN, this option changes the default TCP
* fastopen queue length of 50. Note that having a larger queue size can
* cause resource exhaustion attack as the TCP stack has to now allocate
* resources for the SYN packet along with its DATA. This option should be
* followed by an `unsigned int` argument.
*/
MHD_OPTION_TCP_FASTOPEN_QUEUE_SIZE = 23,
/**
* Memory pointer for the Diffie-Hellman parameters (dh.pem) to be used by the
* HTTPS daemon for key exchange.
* This option must be followed by a `const char *` argument.
*/
MHD_OPTION_HTTPS_MEM_DHPARAMS = 24,
/**
* If present and set to true, allow reusing address:port socket
* (by using SO_REUSEPORT on most platform, or platform-specific ways).
* If present and set to false, disallow reusing address:port socket
* (does nothing on most platform, but uses SO_EXCLUSIVEADDRUSE on Windows).
* This option must be followed by a `unsigned int` argument.
*/
MHD_OPTION_LISTENING_ADDRESS_REUSE = 25,
/**
* Memory pointer for a password that decrypts the private key (key.pem)
* to be used by the HTTPS daemon. This option should be followed by a
* `const char *` argument.
* This should be used in conjunction with #MHD_OPTION_HTTPS_MEM_KEY.
* @sa ::MHD_FEATURE_HTTPS_KEY_PASSWORD
*/
MHD_OPTION_HTTPS_KEY_PASSWORD = 26,
/**
* Register a function that should be called whenever a connection is
* started or closed.
*
* This option should be followed by TWO pointers. First a pointer
* to a function of type #MHD_NotifyConnectionCallback and second a
* pointer to a closure to pass to the request completed callback.
* The second pointer may be NULL.
*/
MHD_OPTION_NOTIFY_CONNECTION = 27,
/**
* Allow to change maximum length of the queue of pending connections on
* listen socket. If not present than default platform-specific SOMAXCONN
* value is used. This option should be followed by an `unsigned int`
* argument.
*/
MHD_OPTION_LISTEN_BACKLOG_SIZE = 28,
/**
* If set to 1 - be strict about the protocol. Use -1 to be
* as tolerant as possible.
*
* The more flexible option #MHD_OPTION_CLIENT_DISCIPLINE_LVL is recommended
* instead of this option.
*
* The values mapping table:
* #MHD_OPTION_STRICT_FOR_CLIENT | #MHD_OPTION_CLIENT_DISCIPLINE_LVL
* -----------------------------:|:---------------------------------
* 1 | 1
* 0 | 0
* -1 | -3
*
* This option should be followed by an `int` argument.
* @sa #MHD_OPTION_CLIENT_DISCIPLINE_LVL
*/
MHD_OPTION_STRICT_FOR_CLIENT = 29,
/**
* This should be a pointer to callback of type
* gnutls_psk_server_credentials_function that will be given to
* gnutls_psk_set_server_credentials_function. It is used to
* retrieve the shared key for a given username.
*/
MHD_OPTION_GNUTLS_PSK_CRED_HANDLER = 30,
/**
* Use a callback to determine which X.509 certificate should be
* used for a given HTTPS connection. This option should be
* followed by a argument of type `gnutls_certificate_retrieve_function3 *`.
* This option provides an
* alternative/extension to #MHD_OPTION_HTTPS_CERT_CALLBACK.
* You must use this version if you want to use OCSP stapling.
* Using this option requires GnuTLS 3.6.3 or higher.
*/
MHD_OPTION_HTTPS_CERT_CALLBACK2 = 31,
/**
* Allows the application to disable certain sanity precautions
* in MHD. With these, the client can break the HTTP protocol,
* so this should never be used in production. The options are,
* however, useful for testing HTTP clients against "broken"
* server implementations.
* This argument must be followed by an "unsigned int", corresponding
* to an `enum MHD_DisableSanityCheck`.
*/
MHD_OPTION_SERVER_INSANITY = 32,
/**
* If followed by value '1' informs MHD that SIGPIPE is suppressed or
* handled by application. Allows MHD to use network functions that could
* generate SIGPIPE, like `sendfile()`.
* Valid only for daemons without #MHD_USE_INTERNAL_POLLING_THREAD as
* MHD automatically suppresses SIGPIPE for threads started by MHD.
* This option should be followed by an `int` argument.
* @note Available since #MHD_VERSION 0x00097205
*/
MHD_OPTION_SIGPIPE_HANDLED_BY_APP = 33,
/**
* If followed by 'int' with value '1' disables usage of ALPN for TLS
* connections even if supported by TLS library.
* Valid only for daemons with #MHD_USE_TLS.
* This option should be followed by an `int` argument.
* @note Available since #MHD_VERSION 0x00097207
*/
MHD_OPTION_TLS_NO_ALPN = 34,
/**
* Memory pointer for the random values to be used by the Digest
* Auth module. This option should be followed by two arguments.
* First an integer of type `size_t` which specifies the size
* of the buffer pointed to by the second argument in bytes.
* The recommended size is between 8 and 32. If size is four or less
* then security could be lowered. Sizes more then 32 (or, probably
* more than 16 - debatable) will not increase security.
* An internal copy of the buffer will be made, the data do not
* need to be static.
* @sa #MHD_OPTION_DIGEST_AUTH_RANDOM
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_OPTION_DIGEST_AUTH_RANDOM_COPY = 35,
/**
* Allow to controls the scope of validity of MHD-generated nonces.
* This regulates how "nonces" are generated and how "nonces" are checked by
* #MHD_digest_auth_check3() and similar functions.
* This option should be followed by an 'unsigned int` argument with value
* formed as bitwise OR combination of #MHD_DAuthBindNonce values.
* When not specified, default value #MHD_DAUTH_BIND_NONCE_NONE is used.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_OPTION_DIGEST_AUTH_NONCE_BIND_TYPE = 36,
/**
* Memory pointer to a `const char *` specifying the GnuTLS priorities to be
* appended to default priorities.
* This allow some specific options to be enabled/disabled, while leaving
* the rest of the settings to their defaults.
* The string does not have to start with a colon ':' character.
* See #MHD_OPTION_HTTPS_PRIORITIES description for details of automatic
* default priorities.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_OPTION_HTTPS_PRIORITIES_APPEND = 37,
/**
* Sets specified client discipline level (i.e. HTTP protocol parsing
* strictness level).
*
* The following basic values are supported:
* 0 - default MHD level, a balance between extra security and broader
* compatibility, as allowed by RFCs for HTTP servers;
* 1 - more strict protocol interpretation, within the limits set by
* RFCs for HTTP servers;
* -1 - more lenient protocol interpretation, within the limits set by
* RFCs for HTTP servers.
* The following extended values could be used as well:
* 2 - stricter protocol interpretation, even stricter then allowed
* by RFCs for HTTP servers, however it should be absolutely compatible
* with clients following at least RFCs' "MUST" type of requirements
* for HTTP clients;
* 3 - strictest protocol interpretation, even stricter then allowed
* by RFCs for HTTP servers, however it should be absolutely compatible
* with clients following RFCs' "SHOULD" and "MUST" types of requirements
* for HTTP clients;
* -2 - more relaxed protocol interpretation, violating RFCs' "SHOULD" type
* of requirements for HTTP servers;
* -3 - the most flexible protocol interpretation, beyond RFCs' "MUST" type of
* requirements for HTTP server.
* Values higher than "3" or lower than "-3" are interpreted as "3" or "-3"
* respectively.
*
* Higher values are more secure, lower values are more compatible with
* various HTTP clients.
*
* The default value ("0") could be used in most cases.
* Value "1" is suitable for highly loaded public servers.
* Values "2" and "3" are generally recommended only for testing of HTTP
* clients against MHD.
* Value "2" may be used for security-centric application, however it is
* slight violation of RFCs' requirements.
* Negative values are not recommended for public servers.
* Values "-1" and "-2" could be used for servers in isolated environment.
* Value "-3" is not recommended unless it is absolutely necessary to
* communicate with some client(s) with badly broken HTTP implementation.
*
* This option should be followed by an `int` argument.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_OPTION_CLIENT_DISCIPLINE_LVL = 38,
/**
* Specifies value of FD_SETSIZE used by application. Only For external
* polling modes (without MHD internal threads).
* Some platforms (FreeBSD, Solaris, W32 etc.) allow overriding of FD_SETSIZE
* value. When polling by select() is used, MHD rejects sockets with numbers
* equal or higher than FD_SETSIZE. If this option is used, MHD treats this
* value as a limitation for socket number instead of FD_SETSIZE value which
* was used for building MHD.
* When external polling is used with #MHD_get_fdset2() (or #MHD_get_fdset()
* macro) and #MHD_run_from_select() interfaces, it is recommended to always
* use this option.
* It is safe to use this option on platforms with fixed FD_SETSIZE (like
* GNU/Linux) if system value of FD_SETSIZE is used as the argument.
* Can be used only for daemons without #MHD_USE_INTERNAL_POLLING_THREAD, i.e.
* only when external sockets polling is used.
* On W32 it is silently ignored, as W32 does not limit the socket number in
* fd_sets.
* This option should be followed by a positive 'int' argument.
* @note Available since #MHD_VERSION 0x00097705
*/
MHD_OPTION_APP_FD_SETSIZE = 39,
/**
* Bind daemon to the supplied 'struct sockaddr'. This option should
* be followed by two parameters: 'socklen_t' the size of memory at the next
* pointer and the pointer 'const struct sockaddr *'.
* Note: the order of the arguments is not the same as for system bind() and
* other network functions.
* If #MHD_USE_IPv6 is specified, the 'struct sockaddr*' should
* point to a 'struct sockaddr_in6'.
* The socket domain (protocol family) is detected from provided
* 'struct sockaddr'. IP, IPv6 and UNIX sockets are supported (if supported
* by the platform). Other types may work occasionally.
* Silently ignored if followed by zero size and NULL pointer.
* @note Available since #MHD_VERSION 0x00097706
*/
MHD_OPTION_SOCK_ADDR_LEN = 40
,
/**
* Default nonce timeout value used for Digest Auth.
* This option should be followed by an 'unsigned int' argument.
* Silently ignored if followed by zero value.
* @see #MHD_digest_auth_check3(), MHD_digest_auth_check_digest3()
* @note Available since #MHD_VERSION 0x00097709
*/
MHD_OPTION_DIGEST_AUTH_DEFAULT_NONCE_TIMEOUT = 41
,
/**
* Default maximum nc (nonce count) value used for Digest Auth.
* This option should be followed by an 'uint32_t' argument.
* Silently ignored if followed by zero value.
* @see #MHD_digest_auth_check3(), MHD_digest_auth_check_digest3()
* @note Available since #MHD_VERSION 0x00097709
*/
MHD_OPTION_DIGEST_AUTH_DEFAULT_MAX_NC = 42
} _MHD_FIXED_ENUM;
/**
* Bitfield for the #MHD_OPTION_SERVER_INSANITY specifying
* which santiy checks should be disabled.
*/
enum MHD_DisableSanityCheck
{
/**
* All sanity checks are enabled.
*/
MHD_DSC_SANE = 0
} _MHD_FIXED_FLAGS_ENUM;
/**
* Entry in an #MHD_OPTION_ARRAY.
*/
struct MHD_OptionItem
{
/**
* Which option is being given. Use #MHD_OPTION_END
* to terminate the array.
*/
enum MHD_OPTION option;
/**
* Option value (for integer arguments, and for options requiring
* two pointer arguments); should be 0 for options that take no
* arguments or only a single pointer argument.
*/
intptr_t value;
/**
* Pointer option value (use NULL for options taking no arguments
* or only an integer option).
*/
void *ptr_value;
};
/**
* The `enum MHD_ValueKind` specifies the source of
* the key-value pairs in the HTTP protocol.
*/
enum MHD_ValueKind
{
/**
* Response header
* @deprecated
*/
MHD_RESPONSE_HEADER_KIND = 0,
#define MHD_RESPONSE_HEADER_KIND \
_MHD_DEPR_IN_MACRO ( \
"Value MHD_RESPONSE_HEADER_KIND is deprecated and not used") \
MHD_RESPONSE_HEADER_KIND
/**
* HTTP header (request/response).
*/
MHD_HEADER_KIND = 1,
/**
* Cookies. Note that the original HTTP header containing
* the cookie(s) will still be available and intact.
*/
MHD_COOKIE_KIND = 2,
/**
* POST data. This is available only if a content encoding
* supported by MHD is used (currently only URL encoding),
* and only if the posted content fits within the available
* memory pool. Note that in that case, the upload data
* given to the #MHD_AccessHandlerCallback will be
* empty (since it has already been processed).
*/
MHD_POSTDATA_KIND = 4,
/**
* GET (URI) arguments.
*/
MHD_GET_ARGUMENT_KIND = 8,
/**
* HTTP footer (only for HTTP 1.1 chunked encodings).
*/
MHD_FOOTER_KIND = 16
} _MHD_FIXED_ENUM;
/**
* The `enum MHD_RequestTerminationCode` specifies reasons
* why a request has been terminated (or completed).
* @ingroup request
*/
enum MHD_RequestTerminationCode
{
/**
* We finished sending the response.
* @ingroup request
*/
MHD_REQUEST_TERMINATED_COMPLETED_OK = 0,
/**
* Error handling the connection (resources
* exhausted, application error accepting request,
* decrypt error (for HTTPS), connection died when
* sending the response etc.)
* @ingroup request
*/
MHD_REQUEST_TERMINATED_WITH_ERROR = 1,
/**
* No activity on the connection for the number
* of seconds specified using
* #MHD_OPTION_CONNECTION_TIMEOUT.
* @ingroup request
*/
MHD_REQUEST_TERMINATED_TIMEOUT_REACHED = 2,
/**
* We had to close the session since MHD was being
* shut down.
* @ingroup request
*/
MHD_REQUEST_TERMINATED_DAEMON_SHUTDOWN = 3,
/**
* We tried to read additional data, but the connection became broken or
* the other side hard closed the connection.
* This error is similar to #MHD_REQUEST_TERMINATED_WITH_ERROR, but
* specific to the case where the connection died before request completely
* received.
* @ingroup request
*/
MHD_REQUEST_TERMINATED_READ_ERROR = 4,
/**
* The client terminated the connection by closing the socket
* for writing (TCP half-closed) while still sending request.
* @ingroup request
*/
MHD_REQUEST_TERMINATED_CLIENT_ABORT = 5
} _MHD_FIXED_ENUM;
/**
* The `enum MHD_ConnectionNotificationCode` specifies types
* of connection notifications.
* @ingroup request
*/
enum MHD_ConnectionNotificationCode
{
/**
* A new connection has been started.
* @ingroup request
*/
MHD_CONNECTION_NOTIFY_STARTED = 0,
/**
* A connection is closed.
* @ingroup request
*/
MHD_CONNECTION_NOTIFY_CLOSED = 1
} _MHD_FIXED_ENUM;
/**
* Information about a connection.
*/
union MHD_ConnectionInfo
{
/**
* Cipher algorithm used, of type "enum gnutls_cipher_algorithm".
*/
int /* enum gnutls_cipher_algorithm */ cipher_algorithm;
/**
* Protocol used, of type "enum gnutls_protocol".
*/
int /* enum gnutls_protocol */ protocol;
/**
* The suspended status of a connection.
*/
int /* MHD_YES or MHD_NO */ suspended;
/**
* Amount of second that connection could spend in idle state
* before automatically disconnected.
* Zero for no timeout (unlimited idle time).
*/
unsigned int connection_timeout;
/**
* HTTP status queued with the response, for #MHD_CONNECTION_INFO_HTTP_STATUS.
*/
unsigned int http_status;
/**
* Connect socket
*/
MHD_socket connect_fd;
/**
* Size of the client's HTTP header.
* It includes the request line, all request headers, the header section
* terminating empty line, with all CRLF (or LF) characters.
*/
size_t header_size;
/**
* GNUtls session handle, of type "gnutls_session_t".
*/
void * /* gnutls_session_t */ tls_session;
/**
* GNUtls client certificate handle, of type "gnutls_x509_crt_t".
*/
void * /* gnutls_x509_crt_t */ client_cert;
/**
* Address information for the client.
*/
struct sockaddr *client_addr;
/**
* Which daemon manages this connection (useful in case there are many
* daemons running).
*/
struct MHD_Daemon *daemon;
/**
* Socket-specific client context. Points to the same address as
* the "socket_context" of the #MHD_NotifyConnectionCallback.
*/
void *socket_context;
};
/**
* I/O vector type. Provided for use with #MHD_create_response_from_iovec().
* @note Available since #MHD_VERSION 0x00097204
*/
struct MHD_IoVec
{
/**
* The pointer to the memory region for I/O.
*/
const void *iov_base;
/**
* The size in bytes of the memory region for I/O.
*/
size_t iov_len;
};
/**
* Values of this enum are used to specify what
* information about a connection is desired.
* @ingroup request
*/
enum MHD_ConnectionInfoType
{
/**
* What cipher algorithm is being used.
* Takes no extra arguments.
* @ingroup request
*/
MHD_CONNECTION_INFO_CIPHER_ALGO,
/**
*
* Takes no extra arguments.
* @ingroup request
*/
MHD_CONNECTION_INFO_PROTOCOL,
/**
* Obtain IP address of the client. Takes no extra arguments.
* Returns essentially a `struct sockaddr **` (since the API returns
* a `union MHD_ConnectionInfo *` and that union contains a `struct
* sockaddr *`).
* @ingroup request
*/
MHD_CONNECTION_INFO_CLIENT_ADDRESS,
/**
* Get the gnuTLS session handle.
* @ingroup request
*/
MHD_CONNECTION_INFO_GNUTLS_SESSION,
/**
* Get the gnuTLS client certificate handle. Dysfunctional (never
* implemented, deprecated). Use #MHD_CONNECTION_INFO_GNUTLS_SESSION
* to get the `gnutls_session_t` and then call
* gnutls_certificate_get_peers().
*/
MHD_CONNECTION_INFO_GNUTLS_CLIENT_CERT,
/**
* Get the `struct MHD_Daemon *` responsible for managing this connection.
* @ingroup request
*/
MHD_CONNECTION_INFO_DAEMON,
/**
* Request the file descriptor for the connection socket.
* MHD sockets are always in non-blocking mode.
* No extra arguments should be passed.
* @ingroup request
*/
MHD_CONNECTION_INFO_CONNECTION_FD,
/**
* Returns the client-specific pointer to a `void *` that was (possibly)
* set during a #MHD_NotifyConnectionCallback when the socket was
* first accepted.
* Note that this is NOT the same as the "req_cls" argument of
* the #MHD_AccessHandlerCallback. The "req_cls" is fresh for each
* HTTP request, while the "socket_context" is fresh for each socket.
*/
MHD_CONNECTION_INFO_SOCKET_CONTEXT,
/**
* Check whether the connection is suspended.
* @ingroup request
*/
MHD_CONNECTION_INFO_CONNECTION_SUSPENDED,
/**
* Get connection timeout
* @ingroup request
*/
MHD_CONNECTION_INFO_CONNECTION_TIMEOUT,
/**
* Return length of the client's HTTP request header.
* @ingroup request
*/
MHD_CONNECTION_INFO_REQUEST_HEADER_SIZE,
/**
* Return HTTP status queued with the response. NULL
* if no HTTP response has been queued yet.
*/
MHD_CONNECTION_INFO_HTTP_STATUS
} _MHD_FIXED_ENUM;
/**
* Values of this enum are used to specify what
* information about a daemon is desired.
*/
enum MHD_DaemonInfoType
{
/**
* No longer supported (will return NULL).
*/
MHD_DAEMON_INFO_KEY_SIZE,
/**
* No longer supported (will return NULL).
*/
MHD_DAEMON_INFO_MAC_KEY_SIZE,
/**
* Request the file descriptor for the listening socket.
* No extra arguments should be passed.
*/
MHD_DAEMON_INFO_LISTEN_FD,
/**
* Request the file descriptor for the "external" sockets polling
* when 'epoll' mode is used.
* No extra arguments should be passed.
*
* Waiting on epoll FD must not block longer than value
* returned by #MHD_get_timeout() otherwise connections
* will "hung" with unprocessed data in network buffers
* and timed-out connections will not be closed.
*
* @sa #MHD_get_timeout(), #MHD_run()
*/
MHD_DAEMON_INFO_EPOLL_FD_LINUX_ONLY,
MHD_DAEMON_INFO_EPOLL_FD = MHD_DAEMON_INFO_EPOLL_FD_LINUX_ONLY,
/**
* Request the number of current connections handled by the daemon.
* No extra arguments should be passed.
* Note: when using MHD in "external" polling mode, this type of request
* could be used only when #MHD_run()/#MHD_run_from_select is not
* working in other thread at the same time.
*/
MHD_DAEMON_INFO_CURRENT_CONNECTIONS,
/**
* Request the daemon flags.
* No extra arguments should be passed.
* Note: flags may differ from original 'flags' specified for
* daemon, especially if #MHD_USE_AUTO was set.
*/
MHD_DAEMON_INFO_FLAGS,
/**
* Request the port number of daemon's listen socket.
* No extra arguments should be passed.
* Note: if port '0' was specified for #MHD_start_daemon(), returned
* value will be real port number.
*/
MHD_DAEMON_INFO_BIND_PORT
} _MHD_FIXED_ENUM;
/**
* Callback for serious error condition. The default action is to print
* an error message and `abort()`.
*
* @param cls user specified value
* @param file where the error occurred, may be NULL if MHD was built without
* messages support
* @param line where the error occurred
* @param reason error detail, may be NULL
* @ingroup logging
*/
typedef void
(*MHD_PanicCallback) (void *cls,
const char *file,
unsigned int line,
const char *reason);
/**
* Allow or deny a client to connect.
*
* @param cls closure
* @param addr address information from the client
* @param addrlen length of @a addr
* @return #MHD_YES if connection is allowed, #MHD_NO if not
*/
typedef enum MHD_Result
(*MHD_AcceptPolicyCallback)(void *cls,
const struct sockaddr *addr,
socklen_t addrlen);
/**
* A client has requested the given @a url using the given @a method
* (#MHD_HTTP_METHOD_GET, #MHD_HTTP_METHOD_PUT, #MHD_HTTP_METHOD_DELETE,
* #MHD_HTTP_METHOD_POST, etc).
*
* The callback must call MHD function MHD_queue_response() to provide content
* to give back to the client and return an HTTP status code (i.e.
* #MHD_HTTP_OK, #MHD_HTTP_NOT_FOUND, etc.). The response can be created
* in this callback or prepared in advance.
* Alternatively, callback may call MHD_suspend_connection() to temporarily
* suspend data processing for this connection.
*
* As soon as response is provided this callback will not be called anymore
* for the current request.
*
* For each HTTP request this callback is called several times:
* * after request headers are fully received and decoded,
* * for each received part of request body (optional, if request has body),
* * when request is fully received.
*
* If response is provided before request is fully received, the rest
* of the request is discarded and connection is automatically closed
* after sending response.
*
* If the request is fully received, but response hasn't been provided and
* connection is not suspended, the callback can be called again immediately.
*
* The response cannot be queued when this callback is called to process
* the client upload data (when @a upload_data is not NULL).
*
* @param cls argument given together with the function
* pointer when the handler was registered with MHD
* @param connection the connection handle
* @param url the requested url
* @param method the HTTP method used (#MHD_HTTP_METHOD_GET,
* #MHD_HTTP_METHOD_PUT, etc.)
* @param version the HTTP version string (i.e.
* #MHD_HTTP_VERSION_1_1)
* @param upload_data the data being uploaded (excluding HEADERS,
* for a POST that fits into memory and that is encoded
* with a supported encoding, the POST data will NOT be
* given in upload_data and is instead available as
* part of #MHD_get_connection_values; very large POST
* data *will* be made available incrementally in
* @a upload_data)
* @param[in,out] upload_data_size set initially to the size of the
* @a upload_data provided; the method must update this
* value to the number of bytes NOT processed;
* @param[in,out] req_cls pointer that the callback can set to some
* address and that will be preserved by MHD for future
* calls for this request; since the access handler may
* be called many times (i.e., for a PUT/POST operation
* with plenty of upload data) this allows the application
* to easily associate some request-specific state.
* If necessary, this state can be cleaned up in the
* global #MHD_RequestCompletedCallback (which
* can be set with the #MHD_OPTION_NOTIFY_COMPLETED).
* Initially, `*req_cls` will be NULL.
* @return #MHD_YES if the connection was handled successfully,
* #MHD_NO if the socket must be closed due to a serious
* error while handling the request
*
* @sa #MHD_queue_response()
*/
typedef enum MHD_Result
(*MHD_AccessHandlerCallback)(void *cls,
struct MHD_Connection *connection,
const char *url,
const char *method,
const char *version,
const char *upload_data,
size_t *upload_data_size,
void **req_cls);
/**
* Signature of the callback used by MHD to notify the
* application about completed requests.
*
* @param cls client-defined closure
* @param connection connection handle
* @param req_cls value as set by the last call to
* the #MHD_AccessHandlerCallback
* @param toe reason for request termination
* @see #MHD_OPTION_NOTIFY_COMPLETED
* @ingroup request
*/
typedef void
(*MHD_RequestCompletedCallback) (void *cls,
struct MHD_Connection *connection,
void **req_cls,
enum MHD_RequestTerminationCode toe);
/**
* Signature of the callback used by MHD to notify the
* application about started/stopped connections
*
* @param cls client-defined closure
* @param connection connection handle
* @param socket_context socket-specific pointer where the
* client can associate some state specific
* to the TCP connection; note that this is
* different from the "req_cls" which is per
* HTTP request. The client can initialize
* during #MHD_CONNECTION_NOTIFY_STARTED and
* cleanup during #MHD_CONNECTION_NOTIFY_CLOSED
* and access in the meantime using
* #MHD_CONNECTION_INFO_SOCKET_CONTEXT.
* @param toe reason for connection notification
* @see #MHD_OPTION_NOTIFY_CONNECTION
* @ingroup request
*/
typedef void
(*MHD_NotifyConnectionCallback) (void *cls,
struct MHD_Connection *connection,
void **socket_context,
enum MHD_ConnectionNotificationCode toe);
/**
* Iterator over key-value pairs. This iterator
* can be used to iterate over all of the cookies,
* headers, or POST-data fields of a request, and
* also to iterate over the headers that have been
* added to a response.
*
* @param cls closure
* @param kind kind of the header we are looking at
* @param key key for the value, can be an empty string
* @param value corresponding value, can be NULL
* @return #MHD_YES to continue iterating,
* #MHD_NO to abort the iteration
* @ingroup request
*/
typedef enum MHD_Result
(*MHD_KeyValueIterator)(void *cls,
enum MHD_ValueKind kind,
const char *key,
const char *value);
/**
* Iterator over key-value pairs with size parameters.
* This iterator can be used to iterate over all of
* the cookies, headers, or POST-data fields of a
* request, and also to iterate over the headers that
* have been added to a response.
* @note Available since #MHD_VERSION 0x00096303
*
* @param cls closure
* @param kind kind of the header we are looking at
* @param key key for the value, can be an empty string
* @param value corresponding value, can be NULL
* @param value_size number of bytes in @a value;
* for C-strings, the length excludes the 0-terminator
* @return #MHD_YES to continue iterating,
* #MHD_NO to abort the iteration
* @ingroup request
*/
typedef enum MHD_Result
(*MHD_KeyValueIteratorN)(void *cls,
enum MHD_ValueKind kind,
const char *key,
size_t key_size,
const char *value,
size_t value_size);
/**
* Callback used by libmicrohttpd in order to obtain content.
*
* The callback is to copy at most @a max bytes of content into @a buf.
* The total number of bytes that has been placed into @a buf should be
* returned.
*
* Note that returning zero will cause libmicrohttpd to try again.
* Thus, returning zero should only be used in conjunction
* with MHD_suspend_connection() to avoid busy waiting.
*
* @param cls extra argument to the callback
* @param pos position in the datastream to access;
* note that if a `struct MHD_Response` object is re-used,
* it is possible for the same content reader to
* be queried multiple times for the same data;
* however, if a `struct MHD_Response` is not re-used,
* libmicrohttpd guarantees that "pos" will be
* the sum of all non-negative return values
* obtained from the content reader so far.
* @param buf where to copy the data
* @param max maximum number of bytes to copy to @a buf (size of @a buf)
* @return number of bytes written to @a buf;
* 0 is legal unless MHD is started in "internal" sockets polling mode
* (since this would cause busy-waiting); 0 in "external" sockets
* polling mode will cause this function to be called again once
* any MHD_run*() function is called;
* #MHD_CONTENT_READER_END_OF_STREAM (-1) for the regular
* end of transmission (with chunked encoding, MHD will then
* terminate the chunk and send any HTTP footers that might be
* present; without chunked encoding and given an unknown
* response size, MHD will simply close the connection; note
* that while returning #MHD_CONTENT_READER_END_OF_STREAM is not technically
* legal if a response size was specified, MHD accepts this
* and treats it just as #MHD_CONTENT_READER_END_WITH_ERROR;
* #MHD_CONTENT_READER_END_WITH_ERROR (-2) to indicate a server
* error generating the response; this will cause MHD to simply
* close the connection immediately. If a response size was
* given or if chunked encoding is in use, this will indicate
* an error to the client. Note, however, that if the client
* does not know a response size and chunked encoding is not in
* use, then clients will not be able to tell the difference between
* #MHD_CONTENT_READER_END_WITH_ERROR and #MHD_CONTENT_READER_END_OF_STREAM.
* This is not a limitation of MHD but rather of the HTTP protocol.
*/
typedef ssize_t
(*MHD_ContentReaderCallback) (void *cls,
uint64_t pos,
char *buf,
size_t max);
/**
* This method is called by libmicrohttpd if we
* are done with a content reader. It should
* be used to free resources associated with the
* content reader.
*
* @param cls closure
* @ingroup response
*/
typedef void
(*MHD_ContentReaderFreeCallback) (void *cls);
/**
* Iterator over key-value pairs where the value
* may be made available in increments and/or may
* not be zero-terminated. Used for processing
* POST data.
*
* @param cls user-specified closure
* @param kind type of the value, always #MHD_POSTDATA_KIND when called from MHD
* @param key 0-terminated key for the value, NULL if not known. This value
* is never NULL for url-encoded POST data.
* @param filename name of the uploaded file, NULL if not known
* @param content_type mime-type of the data, NULL if not known
* @param transfer_encoding encoding of the data, NULL if not known
* @param data pointer to @a size bytes of data at the
* specified offset
* @param off offset of data in the overall value
* @param size number of bytes in @a data available
* @return #MHD_YES to continue iterating,
* #MHD_NO to abort the iteration
*/
typedef enum MHD_Result
(*MHD_PostDataIterator)(void *cls,
enum MHD_ValueKind kind,
const char *key,
const char *filename,
const char *content_type,
const char *transfer_encoding,
const char *data,
uint64_t off,
size_t size);
/* **************** Daemon handling functions ***************** */
/**
* Start a webserver on the given port.
*
* @param flags combination of `enum MHD_FLAG` values
* @param port port to bind to (in host byte order),
* use '0' to bind to random free port,
* ignored if MHD_OPTION_SOCK_ADDR or
* MHD_OPTION_LISTEN_SOCKET is provided
* or MHD_USE_NO_LISTEN_SOCKET is specified
* @param apc callback to call to check which clients
* will be allowed to connect; you can pass NULL
* in which case connections from any IP will be
* accepted
* @param apc_cls extra argument to apc
* @param dh handler called for all requests (repeatedly)
* @param dh_cls extra argument to @a dh
* @param ap list of options (type-value pairs,
* terminated with #MHD_OPTION_END).
* @return NULL on error, handle to daemon on success
* @ingroup event
*/
_MHD_EXTERN struct MHD_Daemon *
MHD_start_daemon_va (unsigned int flags,
uint16_t port,
MHD_AcceptPolicyCallback apc, void *apc_cls,
MHD_AccessHandlerCallback dh, void *dh_cls,
va_list ap);
/**
* Start a webserver on the given port. Variadic version of
* #MHD_start_daemon_va.
*
* @param flags combination of `enum MHD_FLAG` values
* @param port port to bind to (in host byte order),
* use '0' to bind to random free port,
* ignored if MHD_OPTION_SOCK_ADDR or
* MHD_OPTION_LISTEN_SOCKET is provided
* or MHD_USE_NO_LISTEN_SOCKET is specified
* @param apc callback to call to check which clients
* will be allowed to connect; you can pass NULL
* in which case connections from any IP will be
* accepted
* @param apc_cls extra argument to apc
* @param dh handler called for all requests (repeatedly)
* @param dh_cls extra argument to @a dh
* @return NULL on error, handle to daemon on success
* @ingroup event
*/
_MHD_EXTERN struct MHD_Daemon *
MHD_start_daemon (unsigned int flags,
uint16_t port,
MHD_AcceptPolicyCallback apc, void *apc_cls,
MHD_AccessHandlerCallback dh, void *dh_cls,
...);
/**
* Stop accepting connections from the listening socket. Allows
* clients to continue processing, but stops accepting new
* connections. Note that the caller is responsible for closing the
* returned socket; however, if MHD is run using threads (anything but
* "external" sockets polling mode), it must not be closed until AFTER
* #MHD_stop_daemon has been called (as it is theoretically possible
* that an existing thread is still using it).
*
* Note that some thread modes require the caller to have passed
* #MHD_USE_ITC when using this API. If this daemon is
* in one of those modes and this option was not given to
* #MHD_start_daemon, this function will return #MHD_INVALID_SOCKET.
*
* @param daemon daemon to stop accepting new connections for
* @return old listen socket on success, #MHD_INVALID_SOCKET if
* the daemon was already not listening anymore
* @ingroup specialized
*/
_MHD_EXTERN MHD_socket
MHD_quiesce_daemon (struct MHD_Daemon *daemon);
/**
* Shutdown an HTTP daemon.
*
* @param daemon daemon to stop
* @ingroup event
*/
_MHD_EXTERN void
MHD_stop_daemon (struct MHD_Daemon *daemon);
/**
* Add another client connection to the set of connections managed by
* MHD. This API is usually not needed (since MHD will accept inbound
* connections on the server socket). Use this API in special cases,
* for example if your HTTP server is behind NAT and needs to connect
* out to the HTTP client, or if you are building a proxy.
*
* If you use this API in conjunction with an "internal" socket polling,
* you must set the option #MHD_USE_ITC to ensure that the freshly added
* connection is immediately processed by MHD.
*
* The given client socket will be managed (and closed!) by MHD after
* this call and must no longer be used directly by the application
* afterwards.
*
* @param daemon daemon that manages the connection
* @param client_socket socket to manage (MHD will expect
* to receive an HTTP request from this socket next).
* @param addr IP address of the client
* @param addrlen number of bytes in @a addr
* @return #MHD_YES on success, #MHD_NO if this daemon could
* not handle the connection (i.e. `malloc()` failed, etc).
* The socket will be closed in any case; `errno` is
* set to indicate further details about the error.
* @ingroup specialized
*/
_MHD_EXTERN enum MHD_Result
MHD_add_connection (struct MHD_Daemon *daemon,
MHD_socket client_socket,
const struct sockaddr *addr,
socklen_t addrlen);
/**
* Obtain the `select()` sets for this daemon.
* Daemon's FDs will be added to fd_sets. To get only
* daemon FDs in fd_sets, call FD_ZERO for each fd_set
* before calling this function. FD_SETSIZE is assumed
* to be platform's default.
*
* This function should be called only when MHD is configured to
* use "external" sockets polling with 'select()' or with 'epoll'.
* In the latter case, it will only add the single 'epoll' file
* descriptor used by MHD to the sets.
* It's necessary to use #MHD_get_timeout() to get maximum timeout
* value for `select()`. Usage of `select()` with indefinite timeout
* (or timeout larger than returned by #MHD_get_timeout()) will
* violate MHD API and may results in pending unprocessed data.
*
* This function must be called only for daemon started
* without #MHD_USE_INTERNAL_POLLING_THREAD flag.
*
* @param daemon daemon to get sets from
* @param read_fd_set read set
* @param write_fd_set write set
* @param except_fd_set except set
* @param max_fd increased to largest FD added (if larger
* than existing value); can be NULL
* @return #MHD_YES on success, #MHD_NO if this
* daemon was not started with the right
* options for this call or any FD didn't
* fit fd_set.
* @ingroup event
*/
_MHD_EXTERN enum MHD_Result
MHD_get_fdset (struct MHD_Daemon *daemon,
fd_set *read_fd_set,
fd_set *write_fd_set,
fd_set *except_fd_set,
MHD_socket *max_fd);
/**
* Obtain the `select()` sets for this daemon.
* Daemon's FDs will be added to fd_sets. To get only
* daemon FDs in fd_sets, call FD_ZERO for each fd_set
* before calling this function.
*
* Passing custom FD_SETSIZE as @a fd_setsize allow usage of
* larger/smaller than platform's default fd_sets.
*
* This function should be called only when MHD is configured to
* use "external" sockets polling with 'select()' or with 'epoll'.
* In the latter case, it will only add the single 'epoll' file
* descriptor used by MHD to the sets.
* It's necessary to use #MHD_get_timeout() to get maximum timeout
* value for `select()`. Usage of `select()` with indefinite timeout
* (or timeout larger than returned by #MHD_get_timeout()) will
* violate MHD API and may results in pending unprocessed data.
*
* This function must be called only for daemon started
* without #MHD_USE_INTERNAL_POLLING_THREAD flag.
*
* @param daemon daemon to get sets from
* @param read_fd_set read set
* @param write_fd_set write set
* @param except_fd_set except set
* @param max_fd increased to largest FD added (if larger
* than existing value); can be NULL
* @param fd_setsize value of FD_SETSIZE
* @return #MHD_YES on success, #MHD_NO if this
* daemon was not started with the right
* options for this call or any FD didn't
* fit fd_set.
* @ingroup event
*/
_MHD_EXTERN enum MHD_Result
MHD_get_fdset2 (struct MHD_Daemon *daemon,
fd_set *read_fd_set,
fd_set *write_fd_set,
fd_set *except_fd_set,
MHD_socket *max_fd,
unsigned int fd_setsize);
/**
* Obtain the `select()` sets for this daemon.
* Daemon's FDs will be added to fd_sets. To get only
* daemon FDs in fd_sets, call FD_ZERO for each fd_set
* before calling this function. Size of fd_set is
* determined by current value of FD_SETSIZE.
*
* This function should be called only when MHD is configured to
* use "external" sockets polling with 'select()' or with 'epoll'.
* In the latter case, it will only add the single 'epoll' file
* descriptor used by MHD to the sets.
* It's necessary to use #MHD_get_timeout() to get maximum timeout
* value for `select()`. Usage of `select()` with indefinite timeout
* (or timeout larger than returned by #MHD_get_timeout()) will
* violate MHD API and may results in pending unprocessed data.
*
* This function must be called only for daemon started
* without #MHD_USE_INTERNAL_POLLING_THREAD flag.
*
* @param daemon daemon to get sets from
* @param read_fd_set read set
* @param write_fd_set write set
* @param except_fd_set except set
* @param max_fd increased to largest FD added (if larger
* than existing value); can be NULL
* @return #MHD_YES on success, #MHD_NO if this
* daemon was not started with the right
* options for this call or any FD didn't
* fit fd_set.
* @ingroup event
*/
#define MHD_get_fdset(daemon,read_fd_set,write_fd_set,except_fd_set,max_fd) \
MHD_get_fdset2 ((daemon),(read_fd_set),(write_fd_set),(except_fd_set), \
(max_fd),FD_SETSIZE)
/**
* Obtain timeout value for polling function for this daemon.
*
* This function set value to the amount of milliseconds for which polling
* function (`select()`, `poll()` or epoll) should at most block, not the
* timeout value set for connections.
*
* Any "external" sockets polling function must be called with the timeout
* value provided by this function. Smaller timeout values can be used for
* polling function if it is required for any reason, but using larger
* timeout value or no timeout (indefinite timeout) when this function
* return #MHD_YES will break MHD processing logic and result in "hung"
* connections with data pending in network buffers and other problems.
*
* It is important to always use this function (or #MHD_get_timeout64(),
* #MHD_get_timeout64s(), #MHD_get_timeout_i() functions) when "external"
* polling is used.
* If this function returns #MHD_YES then #MHD_run() (or #MHD_run_from_select())
* must be called right after return from polling function, regardless of
* the states of MHD FDs.
*
* In practice, if #MHD_YES is returned then #MHD_run() (or
* #MHD_run_from_select()) must be called not later than @a timeout
* millisecond even if no activity is detected on sockets by sockets
* polling function.
*
* @param daemon daemon to query for timeout
* @param[out] timeout set to the timeout (in milliseconds)
* @return #MHD_YES on success, #MHD_NO if timeouts are
* not used and no data processing is pending.
* @ingroup event
*/
_MHD_EXTERN enum MHD_Result
MHD_get_timeout (struct MHD_Daemon *daemon,
MHD_UNSIGNED_LONG_LONG *timeout);
/**
* Free the memory allocated by MHD.
*
* If any MHD function explicitly mentions that returned pointer must be
* freed by this function, then no other method must be used to free
* the memory.
*
* @param ptr the pointer to free.
* @sa #MHD_digest_auth_get_username(), #MHD_basic_auth_get_username_password3()
* @sa #MHD_basic_auth_get_username_password()
* @note Available since #MHD_VERSION 0x00095600
* @ingroup specialized
*/
_MHD_EXTERN void
MHD_free (void *ptr);
/**
* Obtain timeout value for external polling function for this daemon.
*
* This function set value to the amount of milliseconds for which polling
* function (`select()`, `poll()` or epoll) should at most block, not the
* timeout value set for connections.
*
* Any "external" sockets polling function must be called with the timeout
* value provided by this function. Smaller timeout values can be used for
* polling function if it is required for any reason, but using larger
* timeout value or no timeout (indefinite timeout) when this function
* return #MHD_YES will break MHD processing logic and result in "hung"
* connections with data pending in network buffers and other problems.
*
* It is important to always use this function (or #MHD_get_timeout(),
* #MHD_get_timeout64s(), #MHD_get_timeout_i() functions) when "external"
* polling is used.
* If this function returns #MHD_YES then #MHD_run() (or #MHD_run_from_select())
* must be called right after return from polling function, regardless of
* the states of MHD FDs.
*
* In practice, if #MHD_YES is returned then #MHD_run() (or
* #MHD_run_from_select()) must be called not later than @a timeout
* millisecond even if no activity is detected on sockets by sockets
* polling function.
*
* @param daemon daemon to query for timeout
* @param[out] timeout64 the pointer to the variable to be set to the
* timeout (in milliseconds)
* @return #MHD_YES if timeout value has been set,
* #MHD_NO if timeouts are not used and no data processing is pending.
* @note Available since #MHD_VERSION 0x00097701
* @ingroup event
*/
_MHD_EXTERN enum MHD_Result
MHD_get_timeout64 (struct MHD_Daemon *daemon,
uint64_t *timeout);
/**
* Obtain timeout value for external polling function for this daemon.
*
* This function set value to the amount of milliseconds for which polling
* function (`select()`, `poll()` or epoll) should at most block, not the
* timeout value set for connections.
*
* Any "external" sockets polling function must be called with the timeout
* value provided by this function (if returned value is non-negative).
* Smaller timeout values can be used for polling function if it is required
* for any reason, but using larger timeout value or no timeout (indefinite
* timeout) when this function returns non-negative value will break MHD
* processing logic and result in "hung" connections with data pending in
* network buffers and other problems.
*
* It is important to always use this function (or #MHD_get_timeout(),
* #MHD_get_timeout64(), #MHD_get_timeout_i() functions) when "external"
* polling is used.
* If this function returns non-negative value then #MHD_run() (or
* #MHD_run_from_select()) must be called right after return from polling
* function, regardless of the states of MHD FDs.
*
* In practice, if zero or positive value is returned then #MHD_run() (or
* #MHD_run_from_select()) must be called not later than returned amount of
* millisecond even if no activity is detected on sockets by sockets
* polling function.
*
* @param daemon the daemon to query for timeout
* @return -1 if connections' timeouts are not set and no data processing
* is pending, so external polling function may wait for sockets
* activity for indefinite amount of time,
* otherwise returned value is the the maximum amount of millisecond
* that external polling function must wait for the activity of FDs.
* @note Available since #MHD_VERSION 0x00097701
* @ingroup event
*/
_MHD_EXTERN int64_t
MHD_get_timeout64s (struct MHD_Daemon *daemon);
/**
* Obtain timeout value for external polling function for this daemon.
*
* This function set value to the amount of milliseconds for which polling
* function (`select()`, `poll()` or epoll) should at most block, not the
* timeout value set for connections.
*
* Any "external" sockets polling function must be called with the timeout
* value provided by this function (if returned value is non-negative).
* Smaller timeout values can be used for polling function if it is required
* for any reason, but using larger timeout value or no timeout (indefinite
* timeout) when this function returns non-negative value will break MHD
* processing logic and result in "hung" connections with data pending in
* network buffers and other problems.
*
* It is important to always use this function (or #MHD_get_timeout(),
* #MHD_get_timeout64(), #MHD_get_timeout64s() functions) when "external"
* polling is used.
* If this function returns non-negative value then #MHD_run() (or
* #MHD_run_from_select()) must be called right after return from polling
* function, regardless of the states of MHD FDs.
*
* In practice, if zero or positive value is returned then #MHD_run() (or
* #MHD_run_from_select()) must be called not later than returned amount of
* millisecond even if no activity is detected on sockets by sockets
* polling function.
*
* @param daemon the daemon to query for timeout
* @return -1 if connections' timeouts are not set and no data processing
* is pending, so external polling function may wait for sockets
* activity for indefinite amount of time,
* otherwise returned value is the the maximum amount of millisecond
* (capped at INT_MAX) that external polling function must wait
* for the activity of FDs.
* @note Available since #MHD_VERSION 0x00097701
* @ingroup event
*/
_MHD_EXTERN int
MHD_get_timeout_i (struct MHD_Daemon *daemon);
/**
* Run webserver operations (without blocking unless in client callbacks).
*
* This method should be called by clients in combination with
* #MHD_get_fdset() (or #MHD_get_daemon_info() with MHD_DAEMON_INFO_EPOLL_FD
* if epoll is used) and #MHD_get_timeout() if the client-controlled
* connection polling method is used (i.e. daemon was started without
* #MHD_USE_INTERNAL_POLLING_THREAD flag).
*
* This function is a convenience method, which is useful if the
* fd_sets from #MHD_get_fdset were not directly passed to `select()`;
* with this function, MHD will internally do the appropriate `select()`
* call itself again. While it is acceptable to call #MHD_run (if
* #MHD_USE_INTERNAL_POLLING_THREAD is not set) at any moment, you should
* call #MHD_run_from_select() if performance is important (as it saves an
* expensive call to `select()`).
*
* If #MHD_get_timeout() returned #MHD_YES, than this function must be called
* right after polling function returns regardless of detected activity on
* the daemon's FDs.
*
* @param daemon daemon to run
* @return #MHD_YES on success, #MHD_NO if this
* daemon was not started with the right
* options for this call.
* @ingroup event
*/
_MHD_EXTERN enum MHD_Result
MHD_run (struct MHD_Daemon *daemon);
/**
* Run websever operation with possible blocking.
*
* This function does the following: waits for any network event not more than
* specified number of milliseconds, processes all incoming and outgoing data,
* processes new connections, processes any timed-out connection, and does
* other things required to run webserver.
* Once all connections are processed, function returns.
*
* This function is useful for quick and simple (lazy) webserver implementation
* if application needs to run a single thread only and does not have any other
* network activity.
*
* This function calls MHD_get_timeout() internally and use returned value as
* maximum wait time if it less than value of @a millisec parameter.
*
* It is expected that the "external" socket polling function is not used in
* conjunction with this function unless the @a millisec is set to zero.
*
* @param daemon the daemon to run
* @param millisec the maximum time in milliseconds to wait for network and
* other events. Note: there is no guarantee that function
* blocks for the specified amount of time. The real processing
* time can be shorter (if some data or connection timeout
* comes earlier) or longer (if data processing requires more
* time, especially in user callbacks).
* If set to '0' then function does not block and processes
* only already available data (if any).
* If set to '-1' then function waits for events
* indefinitely (blocks until next network activity or
* connection timeout).
* @return #MHD_YES on success, #MHD_NO if this
* daemon was not started with the right
* options for this call or some serious
* unrecoverable error occurs.
* @note Available since #MHD_VERSION 0x00097206
* @ingroup event
*/
_MHD_EXTERN enum MHD_Result
MHD_run_wait (struct MHD_Daemon *daemon,
int32_t millisec);
/**
* Run webserver operations. This method should be called by clients
* in combination with #MHD_get_fdset and #MHD_get_timeout() if the
* client-controlled select method is used.
*
* You can use this function instead of #MHD_run if you called
* `select()` on the result from #MHD_get_fdset. File descriptors in
* the sets that are not controlled by MHD will be ignored. Calling
* this function instead of #MHD_run is more efficient as MHD will
* not have to call `select()` again to determine which operations are
* ready.
*
* If #MHD_get_timeout() returned #MHD_YES, than this function must be
* called right after `select()` returns regardless of detected activity
* on the daemon's FDs.
*
* This function cannot be used with daemon started with
* #MHD_USE_INTERNAL_POLLING_THREAD flag.
*
* @param daemon daemon to run select loop for
* @param read_fd_set read set
* @param write_fd_set write set
* @param except_fd_set except set
* @return #MHD_NO on serious errors, #MHD_YES on success
* @ingroup event
*/
_MHD_EXTERN enum MHD_Result
MHD_run_from_select (struct MHD_Daemon *daemon,
const fd_set *read_fd_set,
const fd_set *write_fd_set,
const fd_set *except_fd_set);
/**
* Run webserver operations. This method should be called by clients
* in combination with #MHD_get_fdset and #MHD_get_timeout() if the
* client-controlled select method is used.
* This function specifies FD_SETSIZE used when provided fd_sets were
* created. It is important on platforms where FD_SETSIZE can be
* overridden.
*
* You can use this function instead of #MHD_run if you called
* 'select()' on the result from #MHD_get_fdset2(). File descriptors in
* the sets that are not controlled by MHD will be ignored. Calling
* this function instead of #MHD_run() is more efficient as MHD will
* not have to call 'select()' again to determine which operations are
* ready.
*
* If #MHD_get_timeout() returned #MHD_YES, than this function must be
* called right after 'select()' returns regardless of detected activity
* on the daemon's FDs.
*
* This function cannot be used with daemon started with
* #MHD_USE_INTERNAL_POLLING_THREAD flag.
*
* @param daemon the daemon to run select loop for
* @param read_fd_set the read set
* @param write_fd_set the write set
* @param except_fd_set the except set
* @param fd_setsize the value of FD_SETSIZE
* @return #MHD_NO on serious errors, #MHD_YES on success
* @sa #MHD_get_fdset2(), #MHD_OPTION_APP_FD_SETSIZE
* @ingroup event
*/
_MHD_EXTERN enum MHD_Result
MHD_run_from_select2 (struct MHD_Daemon *daemon,
const fd_set *read_fd_set,
const fd_set *write_fd_set,
const fd_set *except_fd_set,
unsigned int fd_setsize);
/**
* Run webserver operations. This method should be called by clients
* in combination with #MHD_get_fdset and #MHD_get_timeout() if the
* client-controlled select method is used.
* This macro automatically substitutes current FD_SETSIZE value.
* It is important on platforms where FD_SETSIZE can be overridden.
*
* You can use this function instead of #MHD_run if you called
* 'select()' on the result from #MHD_get_fdset2(). File descriptors in
* the sets that are not controlled by MHD will be ignored. Calling
* this function instead of #MHD_run() is more efficient as MHD will
* not have to call 'select()' again to determine which operations are
* ready.
*
* If #MHD_get_timeout() returned #MHD_YES, than this function must be
* called right after 'select()' returns regardless of detected activity
* on the daemon's FDs.
*
* This function cannot be used with daemon started with
* #MHD_USE_INTERNAL_POLLING_THREAD flag.
*
* @param daemon the daemon to run select loop for
* @param read_fd_set the read set
* @param write_fd_set the write set
* @param except_fd_set the except set
* @param fd_setsize the value of FD_SETSIZE
* @return #MHD_NO on serious errors, #MHD_YES on success
* @sa #MHD_get_fdset2(), #MHD_OPTION_APP_FD_SETSIZE
* @ingroup event
*/
#define MHD_run_from_select(d,r,w,e) \
MHD_run_from_select2((d),(r),(w),(e),(unsigned int)(FD_SETSIZE))
/* **************** Connection handling functions ***************** */
/**
* Get all of the headers from the request.
*
* @param connection connection to get values from
* @param kind types of values to iterate over, can be a bitmask
* @param iterator callback to call on each header;
* may be NULL (then just count headers)
* @param iterator_cls extra argument to @a iterator
* @return number of entries iterated over,
* -1 if connection is NULL.
* @ingroup request
*/
_MHD_EXTERN int
MHD_get_connection_values (struct MHD_Connection *connection,
enum MHD_ValueKind kind,
MHD_KeyValueIterator iterator,
void *iterator_cls);
/**
* Get all of the headers from the request.
*
* @param connection connection to get values from
* @param kind types of values to iterate over, can be a bitmask
* @param iterator callback to call on each header;
* may be NULL (then just count headers)
* @param iterator_cls extra argument to @a iterator
* @return number of entries iterated over,
* -1 if connection is NULL.
* @note Available since #MHD_VERSION 0x00096400
* @ingroup request
*/
_MHD_EXTERN int
MHD_get_connection_values_n (struct MHD_Connection *connection,
enum MHD_ValueKind kind,
MHD_KeyValueIteratorN iterator,
void *iterator_cls);
/**
* This function can be used to add an entry to the HTTP headers of a
* connection (so that the #MHD_get_connection_values function will
* return them -- and the `struct MHD_PostProcessor` will also see
* them). This maybe required in certain situations (see Mantis
* #1399) where (broken) HTTP implementations fail to supply values
* needed by the post processor (or other parts of the application).
*
* This function MUST only be called from within the
* #MHD_AccessHandlerCallback (otherwise, access maybe improperly
* synchronized). Furthermore, the client must guarantee that the key
* and value arguments are 0-terminated strings that are NOT freed
* until the connection is closed. (The easiest way to do this is by
* passing only arguments to permanently allocated strings.).
*
* @param connection the connection for which a
* value should be set
* @param kind kind of the value
* @param key key for the value
* @param value the value itself
* @return #MHD_NO if the operation could not be
* performed due to insufficient memory;
* #MHD_YES on success
* @ingroup request
*/
_MHD_EXTERN enum MHD_Result
MHD_set_connection_value (struct MHD_Connection *connection,
enum MHD_ValueKind kind,
const char *key,
const char *value);
/**
* This function can be used to add an arbitrary entry to connection.
* This function could add entry with binary zero, which is allowed
* for #MHD_GET_ARGUMENT_KIND. For other kind on entries it is
* recommended to use #MHD_set_connection_value.
*
* This function MUST only be called from within the
* #MHD_AccessHandlerCallback (otherwise, access maybe improperly
* synchronized). Furthermore, the client must guarantee that the key
* and value arguments are 0-terminated strings that are NOT freed
* until the connection is closed. (The easiest way to do this is by
* passing only arguments to permanently allocated strings.).
*
* @param connection the connection for which a
* value should be set
* @param kind kind of the value
* @param key key for the value, must be zero-terminated
* @param key_size number of bytes in @a key (excluding 0-terminator)
* @param value the value itself, must be zero-terminated
* @param value_size number of bytes in @a value (excluding 0-terminator)
* @return #MHD_NO if the operation could not be
* performed due to insufficient memory;
* #MHD_YES on success
* @note Available since #MHD_VERSION 0x00096400
* @ingroup request
*/
_MHD_EXTERN enum MHD_Result
MHD_set_connection_value_n (struct MHD_Connection *connection,
enum MHD_ValueKind kind,
const char *key,
size_t key_size,
const char *value,
size_t value_size);
/**
* Sets the global error handler to a different implementation.
*
* @a cb will only be called in the case of typically fatal, serious internal
* consistency issues or serious system failures like failed lock of mutex.
*
* These issues should only arise in the case of serious memory corruption or
* similar problems with the architecture, there is no safe way to continue
* even for closing of the application.
*
* The default implementation that is used if no panic function is set simply
* prints an error message and calls `abort()`.
* Alternative implementations might call `exit()` or other similar functions.
*
* @param cb new error handler or NULL to use default handler
* @param cls passed to @a cb
* @ingroup logging
*/
_MHD_EXTERN void
MHD_set_panic_func (MHD_PanicCallback cb, void *cls);
/**
* Process escape sequences ('%HH') Updates val in place; the
* result cannot be larger than the input.
* The result is still be 0-terminated.
*
* @param val value to unescape (modified in the process)
* @return length of the resulting val (`strlen(val)` may be
* shorter afterwards due to elimination of escape sequences)
*/
_MHD_EXTERN size_t
MHD_http_unescape (char *val);
/**
* Get a particular header value. If multiple
* values match the kind, return any one of them.
*
* @param connection connection to get values from
* @param kind what kind of value are we looking for
* @param key the header to look for, NULL to lookup 'trailing' value without a key
* @return NULL if no such item was found
* @ingroup request
*/
_MHD_EXTERN const char *
MHD_lookup_connection_value (struct MHD_Connection *connection,
enum MHD_ValueKind kind,
const char *key);
/**
* Get a particular header value. If multiple
* values match the kind, return any one of them.
* @note Since MHD_VERSION 0x00096304
*
* @param connection connection to get values from
* @param kind what kind of value are we looking for
* @param key the header to look for, NULL to lookup 'trailing' value without a key
* @param key_size the length of @a key in bytes
* @param[out] value_ptr the pointer to variable, which will be set to found value,
* will not be updated if key not found,
* could be NULL to just check for presence of @a key
* @param[out] value_size_ptr the pointer variable, which will set to found value,
* will not be updated if key not found,
* could be NULL
* @return #MHD_YES if key is found,
* #MHD_NO otherwise.
* @ingroup request
*/
_MHD_EXTERN enum MHD_Result
MHD_lookup_connection_value_n (struct MHD_Connection *connection,
enum MHD_ValueKind kind,
const char *key,
size_t key_size,
const char **value_ptr,
size_t *value_size_ptr);
/**
* Queue a response to be transmitted to the client (as soon as
* possible but after #MHD_AccessHandlerCallback returns).
*
* For any active connection this function must be called
* only by #MHD_AccessHandlerCallback callback.
*
* For suspended connection this function can be called at any moment (this
* behaviour is deprecated and will be removed!). Response will be sent
* as soon as connection is resumed.
*
* For single thread environment, when MHD is used in "external polling" mode
* (without MHD_USE_SELECT_INTERNALLY) this function can be called any
* time (this behaviour is deprecated and will be removed!).
*
* If HTTP specifications require use no body in reply, like @a status_code with
* value 1xx, the response body is automatically not sent even if it is present
* in the response. No "Content-Length" or "Transfer-Encoding" headers are
* generated and added.
*
* When the response is used to respond HEAD request or used with @a status_code
* #MHD_HTTP_NOT_MODIFIED, then response body is not sent, but "Content-Length"
* header is added automatically based the size of the body in the response.
* If body size it set to #MHD_SIZE_UNKNOWN or chunked encoding is enforced
* then "Transfer-Encoding: chunked" header (for HTTP/1.1 only) is added instead
* of "Content-Length" header. For example, if response with zero-size body is
* used for HEAD request, then "Content-Length: 0" is added automatically to
* reply headers.
* @sa #MHD_RF_HEAD_ONLY_RESPONSE
*
* In situations, where reply body is required, like answer for the GET request
* with @a status_code #MHD_HTTP_OK, headers "Content-Length" (for known body
* size) or "Transfer-Encoding: chunked" (for #MHD_SIZE_UNKNOWN with HTTP/1.1)
* are added automatically.
* In practice, the same response object can be used to respond to both HEAD and
* GET requests.
*
* @param connection the connection identifying the client
* @param status_code HTTP status code (i.e. #MHD_HTTP_OK)
* @param response response to transmit, the NULL is tolerated
* @return #MHD_NO on error (reply already sent, response is NULL),
* #MHD_YES on success or if message has been queued
* @ingroup response
* @sa #MHD_AccessHandlerCallback
*/
_MHD_EXTERN enum MHD_Result
MHD_queue_response (struct MHD_Connection *connection,
unsigned int status_code,
struct MHD_Response *response);
/**
* Suspend handling of network data for a given connection.
* This can be used to dequeue a connection from MHD's event loop
* (not applicable to thread-per-connection!) for a while.
*
* If you use this API in conjunction with an "internal" socket polling,
* you must set the option #MHD_USE_ITC to ensure that a resumed
* connection is immediately processed by MHD.
*
* Suspended connections continue to count against the total number of
* connections allowed (per daemon, as well as per IP, if such limits
* are set). Suspended connections will NOT time out; timeouts will
* restart when the connection handling is resumed. While a
* connection is suspended, MHD will not detect disconnects by the
* client.
*
* The only safe way to call this function is to call it from the
* #MHD_AccessHandlerCallback or #MHD_ContentReaderCallback.
*
* Finally, it is an API violation to call #MHD_stop_daemon while
* having suspended connections (this will at least create memory and
* socket leaks or lead to undefined behavior). You must explicitly
* resume all connections before stopping the daemon.
*
* @param connection the connection to suspend
*
* @sa #MHD_AccessHandlerCallback
*/
_MHD_EXTERN void
MHD_suspend_connection (struct MHD_Connection *connection);
/**
* Resume handling of network data for suspended connection. It is
* safe to resume a suspended connection at any time. Calling this
* function on a connection that was not previously suspended will
* result in undefined behavior.
*
* If you are using this function in "external" sockets polling mode, you must
* make sure to run #MHD_run() and #MHD_get_timeout() afterwards (before
* again calling #MHD_get_fdset()), as otherwise the change may not be
* reflected in the set returned by #MHD_get_fdset() and you may end up
* with a connection that is stuck until the next network activity.
*
* @param connection the connection to resume
*/
_MHD_EXTERN void
MHD_resume_connection (struct MHD_Connection *connection);
/* **************** Response manipulation functions ***************** */
/**
* Flags for special handling of responses.
*/
enum MHD_ResponseFlags
{
/**
* Default: no special flags.
* @note Available since #MHD_VERSION 0x00093701
*/
MHD_RF_NONE = 0,
/**
* Only respond in conservative (dumb) HTTP/1.0-compatible mode.
* Response still use HTTP/1.1 version in header, but always close
* the connection after sending the response and do not use chunked
* encoding for the response.
* You can also set the #MHD_RF_HTTP_1_0_SERVER flag to force
* HTTP/1.0 version in the response.
* Responses are still compatible with HTTP/1.1.
* This option can be used to communicate with some broken client, which
* does not implement HTTP/1.1 features, but advertises HTTP/1.1 support.
* @note Available since #MHD_VERSION 0x00097308
*/
MHD_RF_HTTP_1_0_COMPATIBLE_STRICT = 1 << 0,
/**
* The same as #MHD_RF_HTTP_1_0_COMPATIBLE_STRICT
* @note Available since #MHD_VERSION 0x00093701
*/
MHD_RF_HTTP_VERSION_1_0_ONLY = 1 << 0,
/**
* Only respond in HTTP 1.0-mode.
* Contrary to the #MHD_RF_HTTP_1_0_COMPATIBLE_STRICT flag, the response's
* HTTP version will always be set to 1.0 and keep-alive connections
* will be used if explicitly requested by the client.
* The "Connection:" header will be added for both "close" and "keep-alive"
* connections.
* Chunked encoding will not be used for the response.
* Due to backward compatibility, responses still can be used with
* HTTP/1.1 clients.
* This option can be used to emulate HTTP/1.0 server (for response part
* only as chunked encoding in requests (if any) is processed by MHD).
* @note Available since #MHD_VERSION 0x00097308
*/
MHD_RF_HTTP_1_0_SERVER = 1 << 1,
/**
* The same as #MHD_RF_HTTP_1_0_SERVER
* @note Available since #MHD_VERSION 0x00096000
*/
MHD_RF_HTTP_VERSION_1_0_RESPONSE = 1 << 1,
/**
* Disable sanity check preventing clients from manually
* setting the HTTP content length option.
* Allow to set several "Content-Length" headers. These headers will
* be used even with replies without body.
* @note Available since #MHD_VERSION 0x00096702
*/
MHD_RF_INSANITY_HEADER_CONTENT_LENGTH = 1 << 2,
/**
* Enable sending of "Connection: keep-alive" header even for
* HTTP/1.1 clients when "Keep-Alive" connection is used.
* Disabled by default for HTTP/1.1 clients as per RFC.
* @note Available since #MHD_VERSION 0x00097310
*/
MHD_RF_SEND_KEEP_ALIVE_HEADER = 1 << 3,
/**
* Enable special processing of the response as body-less (with undefined
* body size). No automatic "Content-Length" or "Transfer-Encoding: chunked"
* headers are added when the response is used with #MHD_HTTP_NOT_MODIFIED
* code or to respond to HEAD request.
* The flag also allow to set arbitrary "Content-Length" by
* MHD_add_response_header() function.
* This flag value can be used only with responses created without body
* (zero-size body).
* Responses with this flag enabled cannot be used in situations where
* reply body must be sent to the client.
* This flag is primarily intended to be used when automatic "Content-Length"
* header is undesirable in response to HEAD requests.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_RF_HEAD_ONLY_RESPONSE = 1 << 4
} _MHD_FIXED_FLAGS_ENUM;
/**
* MHD options (for future extensions).
*/
enum MHD_ResponseOptions
{
/**
* End of the list of options.
*/
MHD_RO_END = 0
} _MHD_FIXED_ENUM;
/**
* Set special flags and options for a response.
*
* @param response the response to modify
* @param flags to set for the response
* @param ... #MHD_RO_END terminated list of options
* @return #MHD_YES on success, #MHD_NO on error
*/
_MHD_EXTERN enum MHD_Result
MHD_set_response_options (struct MHD_Response *response,
enum MHD_ResponseFlags flags,
...);
/**
* Create a response object.
* The response object can be extended with header information and then be used
* any number of times.
*
* If response object is used to answer HEAD request then the body of the
* response is not used, while all headers (including automatic headers) are
* used.
*
* @param size size of the data portion of the response, #MHD_SIZE_UNKNOWN for unknown
* @param block_size preferred block size for querying crc (advisory only,
* MHD may still call @a crc using smaller chunks); this
* is essentially the buffer size used for IO, clients
* should pick a value that is appropriate for IO and
* memory performance requirements
* @param crc callback to use to obtain response data
* @param crc_cls extra argument to @a crc
* @param crfc callback to call to free @a crc_cls resources
* @return NULL on error (i.e. invalid arguments, out of memory)
* @ingroup response
*/
_MHD_EXTERN struct MHD_Response *
MHD_create_response_from_callback (uint64_t size,
size_t block_size,
MHD_ContentReaderCallback crc, void *crc_cls,
MHD_ContentReaderFreeCallback crfc);
/**
* Create a response object.
* The response object can be extended with header information and then be used
* any number of times.
*
* If response object is used to answer HEAD request then the body of the
* response is not used, while all headers (including automatic headers) are
* used.
*
* @param size size of the @a data portion of the response
* @param data the data itself
* @param must_free libmicrohttpd should free data when done
* @param must_copy libmicrohttpd must make a copy of @a data
* right away, the data may be released anytime after
* this call returns
* @return NULL on error (i.e. invalid arguments, out of memory)
* @deprecated use #MHD_create_response_from_buffer instead
* @ingroup response
*/
_MHD_DEPR_FUNC ("MHD_create_response_from_data() is deprecated, " \
"use MHD_create_response_from_buffer()") \
_MHD_EXTERN struct MHD_Response *
MHD_create_response_from_data (size_t size,
void *data,
int must_free,
int must_copy);
/**
* Specification for how MHD should treat the memory buffer
* given for the response.
* @ingroup response
*/
enum MHD_ResponseMemoryMode
{
/**
* Buffer is a persistent (static/global) buffer that won't change
* for at least the lifetime of the response, MHD should just use
* it, not free it, not copy it, just keep an alias to it.
* @ingroup response
*/
MHD_RESPMEM_PERSISTENT,
/**
* Buffer is heap-allocated with `malloc()` (or equivalent) and
* should be freed by MHD after processing the response has
* concluded (response reference counter reaches zero).
* The more portable way to automatically free the buffer is function
* MHD_create_response_from_buffer_with_free_callback() with '&free' as
* crfc parameter as it does not require to use the same runtime library.
* @warning It is critical to make sure that the same C-runtime library
* is used by both application and MHD (especially
* important for W32).
* @ingroup response
*/
MHD_RESPMEM_MUST_FREE,
/**
* Buffer is in transient memory, but not on the heap (for example,
* on the stack or non-`malloc()` allocated) and only valid during the
* call to #MHD_create_response_from_buffer. MHD must make its
* own private copy of the data for processing.
* @ingroup response
*/
MHD_RESPMEM_MUST_COPY
} _MHD_FIXED_ENUM;
/**
* Create a response object with the content of provided buffer used as
* the response body.
*
* The response object can be extended with header information and then
* be used any number of times.
*
* If response object is used to answer HEAD request then the body
* of the response is not used, while all headers (including automatic
* headers) are used.
*
* @param size size of the data portion of the response
* @param buffer size bytes containing the response's data portion
* @param mode flags for buffer management
* @return NULL on error (i.e. invalid arguments, out of memory)
* @ingroup response
*/
_MHD_EXTERN struct MHD_Response *
MHD_create_response_from_buffer (size_t size,
void *buffer,
enum MHD_ResponseMemoryMode mode);
/**
* Create a response object with the content of provided statically allocated
* buffer used as the response body.
*
* The buffer must be valid for the lifetime of the response. The easiest way
* to achieve this is to use a statically allocated buffer.
*
* The response object can be extended with header information and then
* be used any number of times.
*
* If response object is used to answer HEAD request then the body
* of the response is not used, while all headers (including automatic
* headers) are used.
*
* @param size the size of the data in @a buffer, can be zero
* @param buffer the buffer with the data for the response body, can be NULL
* if @a size is zero
* @return NULL on error (i.e. invalid arguments, out of memory)
* @note Available since #MHD_VERSION 0x00097701
* @ingroup response
*/
_MHD_EXTERN struct MHD_Response *
MHD_create_response_from_buffer_static (size_t size,
const void *buffer);
/**
* Create a response object with the content of provided temporal buffer
* used as the response body.
*
* An internal copy of the buffer will be made automatically, so buffer have
* to be valid only during the call of this function (as a typical example:
* buffer is a local (non-static) array).
*
* The response object can be extended with header information and then
* be used any number of times.
*
* If response object is used to answer HEAD request then the body
* of the response is not used, while all headers (including automatic
* headers) are used.
*
* @param size the size of the data in @a buffer, can be zero
* @param buffer the buffer with the data for the response body, can be NULL
* if @a size is zero
* @return NULL on error (i.e. invalid arguments, out of memory)
* @note Available since #MHD_VERSION 0x00097701
* @ingroup response
*/
_MHD_EXTERN struct MHD_Response *
MHD_create_response_from_buffer_copy (size_t size,
const void *buffer);
/**
* Create a response object with the content of provided buffer used as
* the response body.
*
* The response object can be extended with header information and then
* be used any number of times.
*
* If response object is used to answer HEAD request then the body
* of the response is not used, while all headers (including automatic
* headers) are used.
*
* @param size size of the data portion of the response
* @param buffer size bytes containing the response's data portion
* @param crfc function to call to free the @a buffer
* @return NULL on error (i.e. invalid arguments, out of memory)
* @note Available since #MHD_VERSION 0x00096000
* @ingroup response
*/
_MHD_EXTERN struct MHD_Response *
MHD_create_response_from_buffer_with_free_callback (size_t size,
void *buffer,
MHD_ContentReaderFreeCallback
crfc);
/**
* Create a response object with the content of provided buffer used as
* the response body.
*
* The response object can be extended with header information and then
* be used any number of times.
*
* If response object is used to answer HEAD request then the body
* of the response is not used, while all headers (including automatic
* headers) are used.
*
* @param size size of the data portion of the response
* @param buffer size bytes containing the response's data portion
* @param crfc function to call to cleanup, if set to NULL then callback
* is not called
* @param crfc_cls an argument for @a crfc
* @return NULL on error (i.e. invalid arguments, out of memory)
* @note Available since #MHD_VERSION 0x00097302
* @note 'const' qualifier is used for @a buffer since #MHD_VERSION 0x00097701
* @ingroup response
*/
_MHD_EXTERN struct MHD_Response *
MHD_create_response_from_buffer_with_free_callback_cls (size_t size,
const void *buffer,
MHD_ContentReaderFreeCallback
crfc,
void *crfc_cls);
/**
* Create a response object with the content of provided file used as
* the response body.
*
* The response object can be extended with header information and then
* be used any number of times.
*
* If response object is used to answer HEAD request then the body
* of the response is not used, while all headers (including automatic
* headers) are used.
*
* @param size size of the data portion of the response
* @param fd file descriptor referring to a file on disk with the
* data; will be closed when response is destroyed;
* fd should be in 'blocking' mode
* @return NULL on error (i.e. invalid arguments, out of memory)
* @ingroup response
*/
_MHD_EXTERN struct MHD_Response *
MHD_create_response_from_fd (size_t size,
int fd);
/**
* Create a response object with the response body created by reading
* the provided pipe.
*
* The response object can be extended with header information and
* then be used ONLY ONCE.
*
* If response object is used to answer HEAD request then the body
* of the response is not used, while all headers (including automatic
* headers) are used.
*
* @param fd file descriptor referring to a read-end of a pipe with the
* data; will be closed when response is destroyed;
* fd should be in 'blocking' mode
* @return NULL on error (i.e. invalid arguments, out of memory)
* @note Available since #MHD_VERSION 0x00097102
* @ingroup response
*/
_MHD_EXTERN struct MHD_Response *
MHD_create_response_from_pipe (int fd);
/**
* Create a response object with the content of provided file used as
* the response body.
*
* The response object can be extended with header information and then
* be used any number of times.
*
* If response object is used to answer HEAD request then the body
* of the response is not used, while all headers (including automatic
* headers) are used.
*
* @param size size of the data portion of the response;
* sizes larger than 2 GiB may be not supported by OS or
* MHD build; see ::MHD_FEATURE_LARGE_FILE
* @param fd file descriptor referring to a file on disk with the
* data; will be closed when response is destroyed;
* fd should be in 'blocking' mode
* @return NULL on error (i.e. invalid arguments, out of memory)
* @ingroup response
*/
_MHD_EXTERN struct MHD_Response *
MHD_create_response_from_fd64 (uint64_t size,
int fd);
/**
* Create a response object with the content of provided file with
* specified offset used as the response body.
*
* The response object can be extended with header information and then
* be used any number of times.
*
* If response object is used to answer HEAD request then the body
* of the response is not used, while all headers (including automatic
* headers) are used.
*
* @param size size of the data portion of the response
* @param fd file descriptor referring to a file on disk with the
* data; will be closed when response is destroyed;
* fd should be in 'blocking' mode
* @param offset offset to start reading from in the file;
* Be careful! `off_t` may have been compiled to be a
* 64-bit variable for MHD, in which case your application
* also has to be compiled using the same options! Read
* the MHD manual for more details.
* @return NULL on error (i.e. invalid arguments, out of memory)
* @ingroup response
*/
_MHD_DEPR_FUNC ("Function MHD_create_response_from_fd_at_offset() is " \
"deprecated, use MHD_create_response_from_fd_at_offset64()") \
_MHD_EXTERN struct MHD_Response *
MHD_create_response_from_fd_at_offset (size_t size,
int fd,
off_t offset);
#if ! defined(_MHD_NO_DEPR_IN_MACRO) || defined(_MHD_NO_DEPR_FUNC)
/* Substitute MHD_create_response_from_fd_at_offset64() instead of MHD_create_response_from_fd_at_offset()
to minimize potential problems with different off_t sizes */
#define MHD_create_response_from_fd_at_offset(size,fd,offset) \
_MHD_DEPR_IN_MACRO ( \
"Usage of MHD_create_response_from_fd_at_offset() is deprecated, use MHD_create_response_from_fd_at_offset64()") \
MHD_create_response_from_fd_at_offset64 ((size),(fd),(offset))
#endif /* !_MHD_NO_DEPR_IN_MACRO || _MHD_NO_DEPR_FUNC */
/**
* Create a response object with the content of provided file with
* specified offset used as the response body.
*
* The response object can be extended with header information and then
* be used any number of times.
*
* If response object is used to answer HEAD request then the body
* of the response is not used, while all headers (including automatic
* headers) are used.
*
* @param size size of the data portion of the response;
* sizes larger than 2 GiB may be not supported by OS or
* MHD build; see ::MHD_FEATURE_LARGE_FILE
* @param fd file descriptor referring to a file on disk with the
* data; will be closed when response is destroyed;
* fd should be in 'blocking' mode
* @param offset offset to start reading from in the file;
* reading file beyond 2 GiB may be not supported by OS or
* MHD build; see ::MHD_FEATURE_LARGE_FILE
* @return NULL on error (i.e. invalid arguments, out of memory)
* @ingroup response
*/
_MHD_EXTERN struct MHD_Response *
MHD_create_response_from_fd_at_offset64 (uint64_t size,
int fd,
uint64_t offset);
/**
* Create a response object with an array of memory buffers
* used as the response body.
*
* The response object can be extended with header information and then
* be used any number of times.
*
* If response object is used to answer HEAD request then the body
* of the response is not used, while all headers (including automatic
* headers) are used.
*
* @param iov the array for response data buffers, an internal copy of this
* will be made
* @param iovcnt the number of elements in @a iov
* @param free_cb the callback to clean up any data associated with @a iov when
* the response is destroyed.
* @param cls the argument passed to @a free_cb
* @return NULL on error (i.e. invalid arguments, out of memory)
* @note Available since #MHD_VERSION 0x00097204
* @ingroup response
*/
_MHD_EXTERN struct MHD_Response *
MHD_create_response_from_iovec (const struct MHD_IoVec *iov,
unsigned int iovcnt,
MHD_ContentReaderFreeCallback free_cb,
void *cls);
/**
* Create a response object with empty (zero size) body.
*
* The response object can be extended with header information and then be used
* any number of times.
*
* This function is a faster equivalent of #MHD_create_response_from_buffer call
* with zero size combined with call of #MHD_set_response_options.
*
* @param flags the flags for the new response object
* @return NULL on error (i.e. invalid arguments, out of memory),
* the pointer to the created response object otherwise
* @note Available since #MHD_VERSION 0x00097701
* @ingroup response
*/
_MHD_EXTERN struct MHD_Response *
MHD_create_response_empty (enum MHD_ResponseFlags flags);
/**
* Enumeration for actions MHD should perform on the underlying socket
* of the upgrade. This API is not finalized, and in particular
* the final set of actions is yet to be decided. This is just an
* idea for what we might want.
*/
enum MHD_UpgradeAction
{
/**
* Close the socket, the application is done with it.
*
* Takes no extra arguments.
*/
MHD_UPGRADE_ACTION_CLOSE = 0,
/**
* Enable CORKing on the underlying socket.
*/
MHD_UPGRADE_ACTION_CORK_ON = 1,
/**
* Disable CORKing on the underlying socket.
*/
MHD_UPGRADE_ACTION_CORK_OFF = 2
} _MHD_FIXED_ENUM;
/**
* Handle given to the application to manage special
* actions relating to MHD responses that "upgrade"
* the HTTP protocol (i.e. to WebSockets).
*/
struct MHD_UpgradeResponseHandle;
/**
* This connection-specific callback is provided by MHD to
* applications (unusual) during the #MHD_UpgradeHandler.
* It allows applications to perform 'special' actions on
* the underlying socket from the upgrade.
*
* @param urh the handle identifying the connection to perform
* the upgrade @a action on.
* @param action which action should be performed
* @param ... arguments to the action (depends on the action)
* @return #MHD_NO on error, #MHD_YES on success
*/
_MHD_EXTERN enum MHD_Result
MHD_upgrade_action (struct MHD_UpgradeResponseHandle *urh,
enum MHD_UpgradeAction action,
...);
/**
* Function called after a protocol "upgrade" response was sent
* successfully and the socket should now be controlled by some
* protocol other than HTTP.
*
* Any data already received on the socket will be made available in
* @e extra_in. This can happen if the application sent extra data
* before MHD send the upgrade response. The application should
* treat data from @a extra_in as if it had read it from the socket.
*
* Note that the application must not close() @a sock directly,
* but instead use #MHD_upgrade_action() for special operations
* on @a sock.
*
* Data forwarding to "upgraded" @a sock will be started as soon
* as this function return.
*
* Except when in 'thread-per-connection' mode, implementations
* of this function should never block (as it will still be called
* from within the main event loop).
*
* @param cls closure, whatever was given to #MHD_create_response_for_upgrade().
* @param connection original HTTP connection handle,
* giving the function a last chance
* to inspect the original HTTP request
* @param req_cls last value left in `req_cls` of the `MHD_AccessHandlerCallback`
* @param extra_in if we happened to have read bytes after the
* HTTP header already (because the client sent
* more than the HTTP header of the request before
* we sent the upgrade response),
* these are the extra bytes already read from @a sock
* by MHD. The application should treat these as if
* it had read them from @a sock.
* @param extra_in_size number of bytes in @a extra_in
* @param sock socket to use for bi-directional communication
* with the client. For HTTPS, this may not be a socket
* that is directly connected to the client and thus certain
* operations (TCP-specific setsockopt(), getsockopt(), etc.)
* may not work as expected (as the socket could be from a
* socketpair() or a TCP-loopback). The application is expected
* to perform read()/recv() and write()/send() calls on the socket.
* The application may also call shutdown(), but must not call
* close() directly.
* @param urh argument for #MHD_upgrade_action()s on this @a connection.
* Applications must eventually use this callback to (indirectly)
* perform the close() action on the @a sock.
*/
typedef void
(*MHD_UpgradeHandler)(void *cls,
struct MHD_Connection *connection,
void *req_cls,
const char *extra_in,
size_t extra_in_size,
MHD_socket sock,
struct MHD_UpgradeResponseHandle *urh);
/**
* Create a response object that can be used for 101 UPGRADE
* responses, for example to implement WebSockets. After sending the
* response, control over the data stream is given to the callback (which
* can then, for example, start some bi-directional communication).
* If the response is queued for multiple connections, the callback
* will be called for each connection. The callback
* will ONLY be called after the response header was successfully passed
* to the OS; if there are communication errors before, the usual MHD
* connection error handling code will be performed.
*
* Setting the correct HTTP code (i.e. MHD_HTTP_SWITCHING_PROTOCOLS)
* and setting correct HTTP headers for the upgrade must be done
* manually (this way, it is possible to implement most existing
* WebSocket versions using this API; in fact, this API might be useful
* for any protocol switch, not just WebSockets). Note that
* draft-ietf-hybi-thewebsocketprotocol-00 cannot be implemented this
* way as the header "HTTP/1.1 101 WebSocket Protocol Handshake"
* cannot be generated; instead, MHD will always produce "HTTP/1.1 101
* Switching Protocols" (if the response code 101 is used).
*
* As usual, the response object can be extended with header
* information and then be used any number of times (as long as the
* header information is not connection-specific).
*
* @param upgrade_handler function to call with the "upgraded" socket
* @param upgrade_handler_cls closure for @a upgrade_handler
* @return NULL on error (i.e. invalid arguments, out of memory)
*/
_MHD_EXTERN struct MHD_Response *
MHD_create_response_for_upgrade (MHD_UpgradeHandler upgrade_handler,
void *upgrade_handler_cls);
/**
* Destroy a response object and associated resources. Note that
* libmicrohttpd may keep some of the resources around if the response
* is still in the queue for some clients, so the memory may not
* necessarily be freed immediately.
*
* @param response response to destroy
* @ingroup response
*/
_MHD_EXTERN void
MHD_destroy_response (struct MHD_Response *response);
/**
* Add a header line to the response.
*
* When reply is generated with queued response, some headers are generated
* automatically. Automatically generated headers are only sent to the client,
* but not added back to the response object.
*
* The list of automatic headers:
* + "Date" header is added automatically unless already set by
* this function
* @see #MHD_USE_SUPPRESS_DATE_NO_CLOCK
* + "Content-Length" is added automatically when required, attempt to set
* it manually by this function is ignored.
* @see #MHD_RF_INSANITY_HEADER_CONTENT_LENGTH
* + "Transfer-Encoding" with value "chunked" is added automatically,
* when chunked transfer encoding is used automatically. Same header with
* the same value can be set manually by this function to enforce chunked
* encoding, however for HTTP/1.0 clients chunked encoding will not be used
* and manually set "Transfer-Encoding" header is automatically removed
* for HTTP/1.0 clients
* + "Connection" may be added automatically with value "Keep-Alive" (only
* for HTTP/1.0 clients) or "Close". The header "Connection" with value
* "Close" could be set by this function to enforce closure of
* the connection after sending this response. "Keep-Alive" cannot be
* enforced and will be removed automatically.
* @see #MHD_RF_SEND_KEEP_ALIVE_HEADER
*
* Some headers are pre-processed by this function:
* * "Connection" headers are combined into single header entry, value is
* normilised, "Keep-Alive" tokens are removed.
* * "Transfer-Encoding" header: the only one header is allowed, the only
* allowed value is "chunked".
* * "Date" header: the only one header is allowed, the second added header
* replaces the first one.
* * "Content-Length" application-defined header is not allowed.
* @see #MHD_RF_INSANITY_HEADER_CONTENT_LENGTH
*
* Headers are used in order as they were added.
*
* @param response the response to add a header to
* @param header the header name to add, no need to be static, an internal copy
* will be created automatically
* @param content the header value to add, no need to be static, an internal
* copy will be created automatically
* @return #MHD_YES on success,
* #MHD_NO on error (i.e. invalid header or content format),
* or out of memory
* @ingroup response
*/
_MHD_EXTERN enum MHD_Result
MHD_add_response_header (struct MHD_Response *response,
const char *header,
const char *content);
/**
* Add a footer line to the response.
*
* @param response response to remove a header from
* @param footer the footer to delete
* @param content value to delete
* @return #MHD_NO on error (i.e. invalid footer or content format).
* @ingroup response
*/
_MHD_EXTERN enum MHD_Result
MHD_add_response_footer (struct MHD_Response *response,
const char *footer,
const char *content);
/**
* Delete a header (or footer) line from the response.
*
* For "Connection" headers this function remove all tokens from existing
* value. Successful result means that at least one token has been removed.
* If all tokens are removed from "Connection" header, the empty "Connection"
* header removed.
*
* @param response response to remove a header from
* @param header the header to delete
* @param content value to delete
* @return #MHD_NO on error (no such header known)
* @ingroup response
*/
_MHD_EXTERN enum MHD_Result
MHD_del_response_header (struct MHD_Response *response,
const char *header,
const char *content);
/**
* Get all of the headers (and footers) added to a response.
*
* @param response response to query
* @param iterator callback to call on each header;
* may be NULL (then just count headers)
* @param iterator_cls extra argument to @a iterator
* @return number of entries iterated over
* @ingroup response
*/
_MHD_EXTERN int
MHD_get_response_headers (struct MHD_Response *response,
MHD_KeyValueIterator iterator,
void *iterator_cls);
/**
* Get a particular header (or footer) from the response.
*
* @param response response to query
* @param key which header to get
* @return NULL if header does not exist
* @ingroup response
*/
_MHD_EXTERN const char *
MHD_get_response_header (struct MHD_Response *response,
const char *key);
/* ********************** PostProcessor functions ********************** */
/**
* Create a `struct MHD_PostProcessor`.
*
* A `struct MHD_PostProcessor` can be used to (incrementally) parse
* the data portion of a POST request. Note that some buggy browsers
* fail to set the encoding type. If you want to support those, you
* may have to call #MHD_set_connection_value with the proper encoding
* type before creating a post processor (if no supported encoding
* type is set, this function will fail).
*
* @param connection the connection on which the POST is
* happening (used to determine the POST format)
* @param buffer_size maximum number of bytes to use for
* internal buffering (used only for the parsing,
* specifically the parsing of the keys). A
* tiny value (256-1024) should be sufficient.
* Do NOT use a value smaller than 256. For good
* performance, use 32 or 64k (i.e. 65536).
* @param iter iterator to be called with the parsed data,
* Must NOT be NULL.
* @param iter_cls first argument to @a iter
* @return NULL on error (out of memory, unsupported encoding),
* otherwise a PP handle
* @ingroup request
*/
_MHD_EXTERN struct MHD_PostProcessor *
MHD_create_post_processor (struct MHD_Connection *connection,
size_t buffer_size,
MHD_PostDataIterator iter, void *iter_cls);
/**
* Parse and process POST data. Call this function when POST data is
* available (usually during an #MHD_AccessHandlerCallback) with the
* "upload_data" and "upload_data_size". Whenever possible, this will
* then cause calls to the #MHD_PostDataIterator.
*
* @param pp the post processor
* @param post_data @a post_data_len bytes of POST data
* @param post_data_len length of @a post_data
* @return #MHD_YES on success, #MHD_NO on error
* (out-of-memory, iterator aborted, parse error)
* @ingroup request
*/
_MHD_EXTERN enum MHD_Result
MHD_post_process (struct MHD_PostProcessor *pp,
const char *post_data,
size_t post_data_len);
/**
* Release PostProcessor resources.
*
* @param pp the PostProcessor to destroy
* @return #MHD_YES if processing completed nicely,
* #MHD_NO if there were spurious characters / formatting
* problems; it is common to ignore the return
* value of this function
* @ingroup request
*/
_MHD_EXTERN enum MHD_Result
MHD_destroy_post_processor (struct MHD_PostProcessor *pp);
/* ********************* Digest Authentication functions *************** */
/**
* Length of the binary output of the MD5 hash function.
* @sa #MHD_digest_get_hash_size()
* @ingroup authentication
*/
#define MHD_MD5_DIGEST_SIZE 16
/**
* Length of the binary output of the SHA-256 hash function.
* @sa #MHD_digest_get_hash_size()
* @ingroup authentication
*/
#define MHD_SHA256_DIGEST_SIZE 32
/**
* Length of the binary output of the SHA-512/256 hash function.
* @warning While this value is the same as the #MHD_SHA256_DIGEST_SIZE,
* the calculated digests for SHA-256 and SHA-512/256 are different.
* @sa #MHD_digest_get_hash_size()
* @note Available since #MHD_VERSION 0x00097701
* @ingroup authentication
*/
#define MHD_SHA512_256_DIGEST_SIZE 32
/**
* Base type of hash calculation.
* Used as part of #MHD_DigestAuthAlgo3 values.
*
* @warning Not used directly by MHD API.
* @note Available since #MHD_VERSION 0x00097701
*/
enum MHD_DigestBaseAlgo
{
/**
* Invalid hash algorithm value
*/
MHD_DIGEST_BASE_ALGO_INVALID = 0,
/**
* MD5 hash algorithm.
* As specified by RFC1321
*/
MHD_DIGEST_BASE_ALGO_MD5 = (1 << 0),
/**
* SHA-256 hash algorithm.
* As specified by FIPS PUB 180-4
*/
MHD_DIGEST_BASE_ALGO_SHA256 = (1 << 1),
/**
* SHA-512/256 hash algorithm.
* As specified by FIPS PUB 180-4
*/
MHD_DIGEST_BASE_ALGO_SHA512_256 = (1 << 2)
} _MHD_FIXED_FLAGS_ENUM;
/**
* The flag indicating non-session algorithm types,
* like 'MD5', 'SHA-256' or 'SHA-512-256'.
* @note Available since #MHD_VERSION 0x00097701
*/
#define MHD_DIGEST_AUTH_ALGO3_NON_SESSION (1 << 6)
/**
* The flag indicating session algorithm types,
* like 'MD5-sess', 'SHA-256-sess' or 'SHA-512-256-sess'.
* @note Available since #MHD_VERSION 0x00097701
*/
#define MHD_DIGEST_AUTH_ALGO3_SESSION (1 << 7)
/**
* Digest algorithm identification
* @warning Do not be confused with #MHD_DigestAuthAlgorithm,
* which uses other values!
* @note Available since #MHD_VERSION 0x00097701
*/
enum MHD_DigestAuthAlgo3
{
/**
* Unknown or wrong algorithm type.
* Used in struct MHD_DigestAuthInfo to indicate client value that
* cannot by identified.
*/
MHD_DIGEST_AUTH_ALGO3_INVALID = 0,
/**
* The 'MD5' algorithm, non-session version.
*/
MHD_DIGEST_AUTH_ALGO3_MD5 =
MHD_DIGEST_BASE_ALGO_MD5 | MHD_DIGEST_AUTH_ALGO3_NON_SESSION,
/**
* The 'MD5-sess' algorithm.
* Not supported by MHD for authentication.
*/
MHD_DIGEST_AUTH_ALGO3_MD5_SESSION =
MHD_DIGEST_BASE_ALGO_MD5 | MHD_DIGEST_AUTH_ALGO3_SESSION,
/**
* The 'SHA-256' algorithm, non-session version.
*/
MHD_DIGEST_AUTH_ALGO3_SHA256 =
MHD_DIGEST_BASE_ALGO_SHA256 | MHD_DIGEST_AUTH_ALGO3_NON_SESSION,
/**
* The 'SHA-256-sess' algorithm.
* Not supported by MHD for authentication.
*/
MHD_DIGEST_AUTH_ALGO3_SHA256_SESSION =
MHD_DIGEST_BASE_ALGO_SHA256 | MHD_DIGEST_AUTH_ALGO3_SESSION,
/**
* The 'SHA-512-256' (SHA-512/256) algorithm.
*/
MHD_DIGEST_AUTH_ALGO3_SHA512_256 =
MHD_DIGEST_BASE_ALGO_SHA512_256 | MHD_DIGEST_AUTH_ALGO3_NON_SESSION,
/**
* The 'SHA-512-256-sess' (SHA-512/256 session) algorithm.
* Not supported by MHD for authentication.
*/
MHD_DIGEST_AUTH_ALGO3_SHA512_256_SESSION =
MHD_DIGEST_BASE_ALGO_SHA512_256 | MHD_DIGEST_AUTH_ALGO3_SESSION
};
/**
* Get digest size for specified algorithm.
*
* The size of the digest specifies the size of the userhash, userdigest
* and other parameters which size depends on used hash algorithm.
* @param algo3 the algorithm to check
* @return the size of the digest (either #MHD_MD5_DIGEST_SIZE or
* #MHD_SHA256_DIGEST_SIZE/MHD_SHA512_256_DIGEST_SIZE)
* or zero if the input value is not supported or not valid
* @sa #MHD_digest_auth_calc_userdigest()
* @sa #MHD_digest_auth_calc_userhash(), #MHD_digest_auth_calc_userhash_hex()
* @note Available since #MHD_VERSION 0x00097701
* @ingroup authentication
*/
_MHD_EXTERN size_t
MHD_digest_get_hash_size (enum MHD_DigestAuthAlgo3 algo3);
/**
* Digest algorithm identification, allow multiple selection.
*
* #MHD_DigestAuthAlgo3 always can be casted to #MHD_DigestAuthMultiAlgo3, but
* not vice versa.
*
* @note Available since #MHD_VERSION 0x00097701
*/
enum MHD_DigestAuthMultiAlgo3
{
/**
* Unknown or wrong algorithm type.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_INVALID = MHD_DIGEST_AUTH_ALGO3_INVALID,
/**
* The 'MD5' algorithm, non-session version.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_MD5 = MHD_DIGEST_AUTH_ALGO3_MD5,
/**
* The 'MD5-sess' algorithm.
* Not supported by MHD for authentication.
* Reserved value.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_MD5_SESSION = MHD_DIGEST_AUTH_ALGO3_MD5_SESSION,
/**
* The 'SHA-256' algorithm, non-session version.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_SHA256 = MHD_DIGEST_AUTH_ALGO3_SHA256,
/**
* The 'SHA-256-sess' algorithm.
* Not supported by MHD for authentication.
* Reserved value.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_SHA256_SESSION =
MHD_DIGEST_AUTH_ALGO3_SHA256_SESSION,
/**
* The 'SHA-512-256' (SHA-512/256) algorithm, non-session version.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_SHA512_256 = MHD_DIGEST_AUTH_ALGO3_SHA512_256,
/**
* The 'SHA-512-256-sess' (SHA-512/256 session) algorithm.
* Not supported by MHD for authentication.
* Reserved value.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_SHA512_256_SESSION =
MHD_DIGEST_AUTH_ALGO3_SHA512_256_SESSION,
/**
* SHA-256 or SHA-512/256 non-session algorithm, MHD will choose
* the preferred or the matching one.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_SHA_ANY_NON_SESSION =
MHD_DIGEST_AUTH_ALGO3_SHA256 | MHD_DIGEST_AUTH_ALGO3_SHA512_256,
/**
* Any non-session algorithm, MHD will choose the preferred or
* the matching one.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_ANY_NON_SESSION =
(0x3F) | MHD_DIGEST_AUTH_ALGO3_NON_SESSION,
/**
* The SHA-256 or SHA-512/256 session algorithm.
* Not supported by MHD.
* Reserved value.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_SHA_ANY_SESSION =
MHD_DIGEST_AUTH_ALGO3_SHA256_SESSION
| MHD_DIGEST_AUTH_ALGO3_SHA512_256_SESSION,
/**
* Any session algorithm.
* Not supported by MHD.
* Reserved value.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_ANY_SESSION =
(0x3F) | MHD_DIGEST_AUTH_ALGO3_SESSION,
/**
* The MD5 algorithm, session or non-session.
* Currently supported as non-session only.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_MD5_ANY =
MHD_DIGEST_AUTH_MULT_ALGO3_MD5 | MHD_DIGEST_AUTH_MULT_ALGO3_MD5_SESSION,
/**
* The SHA-256 algorithm, session or non-session.
* Currently supported as non-session only.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_SHA256_ANY =
MHD_DIGEST_AUTH_MULT_ALGO3_SHA256
| MHD_DIGEST_AUTH_MULT_ALGO3_SHA256_SESSION,
/**
* The SHA-512/256 algorithm, session or non-session.
* Currently supported as non-session only.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_SHA512_256_ANY =
MHD_DIGEST_AUTH_MULT_ALGO3_SHA512_256
| MHD_DIGEST_AUTH_MULT_ALGO3_SHA512_256_SESSION,
/**
* The SHA-256 or SHA-512/256 algorithm, session or non-session.
* Currently supported as non-session only.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_SHA_ANY_ANY =
MHD_DIGEST_AUTH_MULT_ALGO3_SHA_ANY_NON_SESSION
| MHD_DIGEST_AUTH_MULT_ALGO3_SHA_ANY_SESSION,
/**
* Any algorithm, MHD will choose the preferred or the matching one.
*/
MHD_DIGEST_AUTH_MULT_ALGO3_ANY =
(0x3F) | MHD_DIGEST_AUTH_ALGO3_NON_SESSION | MHD_DIGEST_AUTH_ALGO3_SESSION
};
/**
* Calculate "userhash", return it as binary data.
*
* The "userhash" is the hash of the string "username:realm".
*
* The "userhash" could be used to avoid sending username in cleartext in Digest
* Authorization client's header.
*
* Userhash is not designed to hide the username in local database or files,
* as username in cleartext is required for #MHD_digest_auth_check3() function
* to check the response, but it can be used to hide username in HTTP headers.
*
* This function could be used when the new username is added to the username
* database to save the "userhash" alongside with the username (preferably) or
* when loading list of the usernames to generate the userhash for every loaded
* username (this will cause delays at the start with the long lists).
*
* Once "userhash" is generated it could be used to identify users by clients
* with "userhash" support.
* Avoid repetitive usage of this function for the same username/realm
* combination as it will cause excessive CPU load; save and re-use the result
* instead.
*
* @param algo3 the algorithm for userhash calculations
* @param username the username
* @param realm the realm
* @param[out] userhash_bin the output buffer for userhash as binary data;
* if this function succeeds, then this buffer has
* #MHD_digest_get_hash_size(algo3) bytes of userhash
* upon return
* @param bin_buf_size the size of the @a userhash_bin buffer, must be
* at least #MHD_digest_get_hash_size(algo3) bytes long
* @return MHD_YES on success,
* MHD_NO if @a bin_buf_size is too small or if @a algo3 algorithm is
* not supported (or external error has occurred,
* see #MHD_FEATURE_EXTERN_HASH)
* @sa #MHD_digest_auth_calc_userhash_hex()
* @note Available since #MHD_VERSION 0x00097701
* @ingroup authentication
*/
_MHD_EXTERN enum MHD_Result
MHD_digest_auth_calc_userhash (enum MHD_DigestAuthAlgo3 algo3,
const char *username,
const char *realm,
void *userhash_bin,
size_t bin_buf_size);
/**
* Calculate "userhash", return it as hexadecimal string.
*
* The "userhash" is the hash of the string "username:realm".
*
* The "userhash" could be used to avoid sending username in cleartext in Digest
* Authorization client's header.
*
* Userhash is not designed to hide the username in local database or files,
* as username in cleartext is required for #MHD_digest_auth_check3() function
* to check the response, but it can be used to hide username in HTTP headers.
*
* This function could be used when the new username is added to the username
* database to save the "userhash" alongside with the username (preferably) or
* when loading list of the usernames to generate the userhash for every loaded
* username (this will cause delays at the start with the long lists).
*
* Once "userhash" is generated it could be used to identify users by clients
* with "userhash" support.
* Avoid repetitive usage of this function for the same username/realm
* combination as it will cause excessive CPU load; save and re-use the result
* instead.
*
* @param algo3 the algorithm for userhash calculations
* @param username the username
* @param realm the realm
* @param[out] userhash_hex the output buffer for userhash as hex string;
* if this function succeeds, then this buffer has
* #MHD_digest_get_hash_size(algo3)*2 chars long
* userhash zero-terminated string
* @param bin_buf_size the size of the @a userhash_bin buffer, must be
* at least #MHD_digest_get_hash_size(algo3)*2+1 chars long
* @return MHD_YES on success,
* MHD_NO if @a bin_buf_size is too small or if @a algo3 algorithm is
* not supported (or external error has occurred,
* see #MHD_FEATURE_EXTERN_HASH).
* @sa #MHD_digest_auth_calc_userhash()
* @note Available since #MHD_VERSION 0x00097701
* @ingroup authentication
*/
_MHD_EXTERN enum MHD_Result
MHD_digest_auth_calc_userhash_hex (enum MHD_DigestAuthAlgo3 algo3,
const char *username,
const char *realm,
char *userhash_hex,
size_t hex_buf_size);
/**
* The type of username used by client in Digest Authorization header
*
* Values are sorted so simplified checks could be used.
* For example:
* * (value <= MHD_DIGEST_AUTH_UNAME_TYPE_INVALID) is true if no valid username
* is provided by the client
* * (value >= MHD_DIGEST_AUTH_UNAME_TYPE_USERHASH) is true if username is
* provided in any form
* * (value >= MHD_DIGEST_AUTH_UNAME_TYPE_STANDARD) is true if username is
* provided in clear text (no userhash matching is needed)
*
* @note Available since #MHD_VERSION 0x00097701
*/
enum MHD_DigestAuthUsernameType
{
/**
* No username parameter in in Digest Authorization header.
* This should be treated as an error.
*/
MHD_DIGEST_AUTH_UNAME_TYPE_MISSING = 0,
/**
* The 'username' parameter is used to specify the username.
*/
MHD_DIGEST_AUTH_UNAME_TYPE_STANDARD = (1 << 2),
/**
* The username is specified by 'username*' parameter with
* the extended notation (see RFC 5987 #section-3.2.1).
* The only difference between standard and extended types is
* the way how username value is encoded in the header.
*/
MHD_DIGEST_AUTH_UNAME_TYPE_EXTENDED = (1 << 3),
/**
* The username provided in form of 'userhash' as
* specified by RFC 7616 #section-3.4.4.
* @sa #MHD_digest_auth_calc_userhash_hex(), #MHD_digest_auth_calc_userhash()
*/
MHD_DIGEST_AUTH_UNAME_TYPE_USERHASH = (1 << 1),
/**
* The invalid combination of username parameters are used by client.
* Either:
* * both 'username' and 'username*' are used
* * 'username*' is used with 'userhash=true'
* * 'username*' used with invalid extended notation
* * 'username' is not hexadecimal string, while 'userhash' set to 'true'
*/
MHD_DIGEST_AUTH_UNAME_TYPE_INVALID = (1 << 0)
} _MHD_FIXED_ENUM;
/**
* The QOP ('quality of protection') types.
* @note Available since #MHD_VERSION 0x00097701
*/
enum MHD_DigestAuthQOP
{
/**
* Invalid/unknown QOP.
* Used in struct MHD_DigestAuthInfo to indicate client value that
* cannot by identified.
*/
MHD_DIGEST_AUTH_QOP_INVALID = 0,
/**
* No QOP parameter.
* As described in old RFC 2069 original specification.
* This mode is not allowed by latest RFCs and should be used only to
* communicate with clients that do not support more modern modes (with QOP
* parameter).
* This mode is less secure than other modes and inefficient.
*/
MHD_DIGEST_AUTH_QOP_NONE = 1 << 0,
/**
* The 'auth' QOP type.
*/
MHD_DIGEST_AUTH_QOP_AUTH = 1 << 1,
/**
* The 'auth-int' QOP type.
* Not supported by MHD for authentication.
*/
MHD_DIGEST_AUTH_QOP_AUTH_INT = 1 << 2
} _MHD_FIXED_FLAGS_ENUM;
/**
* The QOP ('quality of protection') types, multiple selection.
*
* #MHD_DigestAuthQOP always can be casted to #MHD_DigestAuthMultiQOP, but
* not vice versa.
*
* @note Available since #MHD_VERSION 0x00097701
*/
enum MHD_DigestAuthMultiQOP
{
/**
* Invalid/unknown QOP.
*/
MHD_DIGEST_AUTH_MULT_QOP_INVALID = MHD_DIGEST_AUTH_QOP_INVALID,
/**
* No QOP parameter.
* As described in old RFC 2069 original specification.
* This mode is not allowed by latest RFCs and should be used only to
* communicate with clients that do not support more modern modes (with QOP
* parameter).
* This mode is less secure than other modes and inefficient.
*/
MHD_DIGEST_AUTH_MULT_QOP_NONE = MHD_DIGEST_AUTH_QOP_NONE,
/**
* The 'auth' QOP type.
*/
MHD_DIGEST_AUTH_MULT_QOP_AUTH = MHD_DIGEST_AUTH_QOP_AUTH,
/**
* The 'auth-int' QOP type.
* Not supported by MHD.
* Reserved value.
*/
MHD_DIGEST_AUTH_MULT_QOP_AUTH_INT = MHD_DIGEST_AUTH_QOP_AUTH_INT,
/**
* The 'auth' QOP type OR the old RFC2069 (no QOP) type.
* In other words: any types except 'auth-int'.
* RFC2069-compatible mode is allowed, thus this value should be used only
* when it is really necessary.
*/
MHD_DIGEST_AUTH_MULT_QOP_ANY_NON_INT =
MHD_DIGEST_AUTH_QOP_NONE | MHD_DIGEST_AUTH_QOP_AUTH,
/**
* Any 'auth' QOP type ('auth' or 'auth-int').
* Currently supported as 'auth' QOP type only.
*/
MHD_DIGEST_AUTH_MULT_QOP_AUTH_ANY =
MHD_DIGEST_AUTH_QOP_AUTH | MHD_DIGEST_AUTH_QOP_AUTH_INT
} _MHD_FIXED_ENUM;
/**
* The invalid value of 'nc' parameter in client Digest Authorization header.
* @note Available since #MHD_VERSION 0x00097701
*/
#define MHD_DIGEST_AUTH_INVALID_NC_VALUE (0)
/**
* Information from Digest Authorization client's header.
*
* All buffers pointed by any struct members are freed when #MHD_free() is
* called for pointer to this structure.
*
* Application may modify buffers as needed until #MHD_free() is called for
* pointer to this structure
* @note Available since #MHD_VERSION 0x00097701
*/
struct MHD_DigestAuthInfo
{
/**
* The algorithm as defined by client.
* Set automatically to MD5 if not specified by client.
* @warning Do not be confused with #MHD_DigestAuthAlgorithm,
* which uses other values!
*/
enum MHD_DigestAuthAlgo3 algo3;
/**
* The type of username used by client.
*/
enum MHD_DigestAuthUsernameType uname_type;
/**
* The username string.
* Used only if username type is standard or extended, always NULL otherwise.
* If extended notation is used, this string is pct-decoded string
* with charset and language tag removed (i.e. it is original username
* extracted from the extended notation).
* When userhash is used by the client, this member is NULL and
* @a userhash_hex and @a userhash_bin are set.
* The buffer pointed by the @a username becomes invalid when the pointer
* to the structure is freed by #MHD_free().
*/
char *username;
/**
* The length of the @a username.
* When the @a username is NULL, this member is always zero.
*/
size_t username_len;
/**
* The userhash string.
* Valid only if username type is userhash.
* This is unqoted string without decoding of the hexadecimal
* digits (as provided by the client).
* The buffer pointed by the @a userhash_hex becomes invalid when the pointer
* to the structure is freed by #MHD_free().
* @sa #MHD_digest_auth_calc_userhash_hex()
*/
char *userhash_hex;
/**
* The length of the @a userhash_hex in characters.
* The valid size should be #MHD_digest_get_hash_size(algo3) * 2 characters.
* When the @a userhash_hex is NULL, this member is always zero.
*/
size_t userhash_hex_len;
/**
* The userhash decoded to binary form.
* Used only if username type is userhash, always NULL otherwise.
* When not NULL, this points to binary sequence @a userhash_hex_len /2 bytes
* long.
* The valid size should be #MHD_digest_get_hash_size(algo3) bytes.
* The buffer pointed by the @a userhash_bin becomes invalid when the pointer
* to the structure is freed by #MHD_free().
* @warning This is a binary data, no zero termination.
* @warning To avoid buffer overruns, always check the size of the data before
* use, because @a userhash_bin can point even to zero-sized
* data.
* @sa #MHD_digest_auth_calc_userhash()
*/
uint8_t *userhash_bin;
/**
* The 'opaque' parameter value, as specified by client.
* NULL if not specified by client.
* The buffer pointed by the @a opaque becomes invalid when the pointer
* to the structure is freed by #MHD_free().
*/
char *opaque;
/**
* The length of the @a opaque.
* When the @a opaque is NULL, this member is always zero.
*/
size_t opaque_len;
/**
* The 'realm' parameter value, as specified by client.
* NULL if not specified by client.
* The buffer pointed by the @a realm becomes invalid when the pointer
* to the structure is freed by #MHD_free().
*/
char *realm;
/**
* The length of the @a realm.
* When the @a realm is NULL, this member is always zero.
*/
size_t realm_len;
/**
* The 'qop' parameter value.
*/
enum MHD_DigestAuthQOP qop;
/**
* The length of the 'cnonce' parameter value, including possible
* backslash-escape characters.
* 'cnonce' is used in hash calculation, which is CPU-intensive procedure.
* An application may want to reject too large cnonces to limit the CPU load.
* A few kilobytes is a reasonable limit, typically cnonce is just 32-160
* characters long.
*/
size_t cnonce_len;
/**
* The nc parameter value.
* Can be used by application to limit the number of nonce re-uses. If @a nc
* is higher than application wants to allow, then "auth required" response
* with 'stale=true' could be used to force client to retry with the fresh
* 'nonce'.
* If not specified by client or does not have hexadecimal digits only, the
* value is #MHD_DIGEST_AUTH_INVALID_NC_VALUE.
*/
uint32_t nc;
};
/**
* Get information about Digest Authorization client's header.
*
* @param connection The MHD connection structure
* @return NULL if no valid Digest Authorization header is used in the request;
* a pointer to the structure with information if the valid request
* header found, free using #MHD_free().
* @sa #MHD_digest_auth_get_username3()
* @note Available since #MHD_VERSION 0x00097701
* @ingroup authentication
*/
_MHD_EXTERN struct MHD_DigestAuthInfo *
MHD_digest_auth_get_request_info3 (struct MHD_Connection *connection);
/**
* Information from Digest Authorization client's header.
*
* All buffers pointed by any struct members are freed when #MHD_free() is
* called for pointer to this structure.
*
* Application may modify buffers as needed until #MHD_free() is called for
* pointer to this structure
* @note Available since #MHD_VERSION 0x00097701
*/
struct MHD_DigestAuthUsernameInfo
{
/**
* The algorithm as defined by client.
* Set automatically to MD5 if not specified by client.
* @warning Do not be confused with #MHD_DigestAuthAlgorithm,
* which uses other values!
*/
enum MHD_DigestAuthAlgo3 algo3;
/**
* The type of username used by client.
* The 'invalid' and 'missing' types are not used in this structure,
* instead NULL is returned by #MHD_digest_auth_get_username3().
*/
enum MHD_DigestAuthUsernameType uname_type;
/**
* The username string.
* Used only if username type is standard or extended, always NULL otherwise.
* If extended notation is used, this string is pct-decoded string
* with charset and language tag removed (i.e. it is original username
* extracted from the extended notation).
* When userhash is used by the client, this member is NULL and
* @a userhash_hex and @a userhash_bin are set.
* The buffer pointed by the @a username becomes invalid when the pointer
* to the structure is freed by #MHD_free().
*/
char *username;
/**
* The length of the @a username.
* When the @a username is NULL, this member is always zero.
*/
size_t username_len;
/**
* The userhash string.
* Valid only if username type is userhash.
* This is unqoted string without decoding of the hexadecimal
* digits (as provided by the client).
* The buffer pointed by the @a userhash_hex becomes invalid when the pointer
* to the structure is freed by #MHD_free().
* @sa #MHD_digest_auth_calc_userhash_hex()
*/
char *userhash_hex;
/**
* The length of the @a userhash_hex in characters.
* The valid size should be #MHD_digest_get_hash_size(algo3) * 2 characters.
* When the @a userhash_hex is NULL, this member is always zero.
*/
size_t userhash_hex_len;
/**
* The userhash decoded to binary form.
* Used only if username type is userhash, always NULL otherwise.
* When not NULL, this points to binary sequence @a userhash_hex_len /2 bytes
* long.
* The valid size should be #MHD_digest_get_hash_size(algo3) bytes.
* The buffer pointed by the @a userhash_bin becomes invalid when the pointer
* to the structure is freed by #MHD_free().
* @warning This is a binary data, no zero termination.
* @warning To avoid buffer overruns, always check the size of the data before
* use, because @a userhash_bin can point even to zero-sized
* data.
* @sa #MHD_digest_auth_calc_userhash()
*/
uint8_t *userhash_bin;
};
/**
* Get the username from Digest Authorization client's header.
*
* @param connection The MHD connection structure
* @return NULL if no valid Digest Authorization header is used in the request,
* or no username parameter is present in the header, or username is
* provided incorrectly by client (see description for
* #MHD_DIGEST_AUTH_UNAME_TYPE_INVALID);
* a pointer structure with information if the valid request header
* found, free using #MHD_free().
* @sa #MHD_digest_auth_get_request_info3() provides more complete information
* @note Available since #MHD_VERSION 0x00097701
* @ingroup authentication
*/
_MHD_EXTERN struct MHD_DigestAuthUsernameInfo *
MHD_digest_auth_get_username3 (struct MHD_Connection *connection);
/**
* The result of digest authentication of the client.
*
* All error values are zero or negative.
*
* @note Available since #MHD_VERSION 0x00097701
*/
enum MHD_DigestAuthResult
{
/**
* Authentication OK.
*/
MHD_DAUTH_OK = 1,
/**
* General error, like "out of memory".
*/
MHD_DAUTH_ERROR = 0,
/**
* No "Authorization" header or wrong format of the header.
* Also may be returned if required parameters in client Authorisation header
* are missing or broken (in invalid format).
*/
MHD_DAUTH_WRONG_HEADER = -1,
/**
* Wrong 'username'.
*/
MHD_DAUTH_WRONG_USERNAME = -2,
/**
* Wrong 'realm'.
*/
MHD_DAUTH_WRONG_REALM = -3,
/**
* Wrong 'URI' (or URI parameters).
*/
MHD_DAUTH_WRONG_URI = -4,
/**
* Wrong 'qop'.
*/
MHD_DAUTH_WRONG_QOP = -5,
/**
* Wrong 'algorithm'.
*/
MHD_DAUTH_WRONG_ALGO = -6,
/**
* Too large (>64 KiB) Authorization parameter value.
*/
MHD_DAUTH_TOO_LARGE = -15,
/* The different form of naming is intentionally used for the results below,
* as they are more important */
/**
* The 'nonce' is too old. Suggest the client to retry with the same
* username and password to get the fresh 'nonce'.
* The validity of the 'nonce' may be not checked.
*/
MHD_DAUTH_NONCE_STALE = -17,
/**
* The 'nonce' was generated by MHD for other conditions.
* This value is only returned if #MHD_OPTION_DIGEST_AUTH_NONCE_BIND_TYPE
* is set to anything other than #MHD_DAUTH_BIND_NONCE_NONE.
* The interpretation of this code could be different. For example, if
* #MHD_DAUTH_BIND_NONCE_URI is set and client just used the same 'nonce' for
* another URI, the code could be handled as #MHD_DAUTH_NONCE_STALE as
* RFCs allow nonces re-using for other URIs in the same "protection
* space". However, if only #MHD_DAUTH_BIND_NONCE_CLIENT_IP bit is set and
* it is know that clients have fixed IP addresses, this return code could
* be handled like #MHD_DAUTH_NONCE_WRONG.
*/
MHD_DAUTH_NONCE_OTHER_COND = -18,
/**
* The 'nonce' is wrong. May indicate an attack attempt.
*/
MHD_DAUTH_NONCE_WRONG = -33,
/**
* The 'response' is wrong. Typically it means that wrong password used.
* May indicate an attack attempt.
*/
MHD_DAUTH_RESPONSE_WRONG = -34
};
/**
* Authenticates the authorization header sent by the client.
*
* If RFC2069 mode is allowed by setting bit #MHD_DIGEST_AUTH_QOP_NONE in
* @a mqop and the client uses this mode, then server generated nonces are
* used as one-time nonces because nonce-count is not supported in this old RFC.
* Communication in this mode is very inefficient, especially if the client
* requests several resources one-by-one as for every request a new nonce must
* be generated and client repeats all requests twice (first time to get a new
* nonce and second time to perform an authorised request).
*
* @param connection the MHD connection structure
* @param realm the realm for authorization of the client
* @param username the username to be authenticated, must be in clear text
* even if userhash is used by the client
* @param password the password matching the @a username (and the @a realm)
* @param nonce_timeout the period of seconds since nonce generation, when
* the nonce is recognised as valid and not stale;
* if zero is specified then daemon default value is used.
* @param max_nc the maximum allowed nc (Nonce Count) value, if client's nc
* exceeds the specified value then MHD_DAUTH_NONCE_STALE is
* returned;
* if zero is specified then daemon default value is used.
* @param mqop the QOP to use
* @param malgo3 digest algorithms allowed to use, fail if algorithm used
* by the client is not allowed by this parameter
* @return #MHD_DAUTH_OK if authenticated,
* the error code otherwise
* @note Available since #MHD_VERSION 0x00097708
* @ingroup authentication
*/
_MHD_EXTERN enum MHD_DigestAuthResult
MHD_digest_auth_check3 (struct MHD_Connection *connection,
const char *realm,
const char *username,
const char *password,
unsigned int nonce_timeout,
uint32_t max_nc,
enum MHD_DigestAuthMultiQOP mqop,
enum MHD_DigestAuthMultiAlgo3 malgo3);
/**
* Calculate userdigest, return it as a binary data.
*
* The "userdigest" is the hash of the "username:realm:password" string.
*
* The "userdigest" can be used to avoid storing the password in clear text
* in database/files
*
* This function is designed to improve security of stored credentials,
* the "userdigest" does not improve security of the authentication process.
*
* The results can be used to store username & userdigest pairs instead of
* username & password pairs. To further improve security, application may
* store username & userhash & userdigest triplets.
*
* @param algo3 the digest algorithm
* @param username the username
* @param realm the realm
* @param password the password
* @param[out] userdigest_bin the output buffer for userdigest;
* if this function succeeds, then this buffer has
* #MHD_digest_get_hash_size(algo3) bytes of
* userdigest upon return
* @param bin_buf_size the size of the @a userdigest_bin buffer, must be
* at least #MHD_digest_get_hash_size(algo3) bytes long
* @return MHD_YES on success,
* MHD_NO if @a userdigest_bin is too small or if @a algo3 algorithm is
* not supported (or external error has occurred,
* see #MHD_FEATURE_EXTERN_HASH).
* @sa #MHD_digest_auth_check_digest3()
* @note Available since #MHD_VERSION 0x00097701
* @ingroup authentication
*/
_MHD_EXTERN enum MHD_Result
MHD_digest_auth_calc_userdigest (enum MHD_DigestAuthAlgo3 algo3,
const char *username,
const char *realm,
const char *password,
void *userdigest_bin,
size_t bin_buf_size);
/**
* Authenticates the authorization header sent by the client by using
* hash of "username:realm:password".
*
* If RFC2069 mode is allowed by setting bit #MHD_DIGEST_AUTH_QOP_NONE in
* @a mqop and the client uses this mode, then server generated nonces are
* used as one-time nonces because nonce-count is not supported in this old RFC.
* Communication in this mode is very inefficient, especially if the client
* requests several resources one-by-one as for every request a new nonce must
* be generated and client repeats all requests twice (first time to get a new
* nonce and second time to perform an authorised request).
*
* @param connection the MHD connection structure
* @param realm the realm for authorization of the client
* @param username the username to be authenticated, must be in clear text
* even if userhash is used by the client
* @param userdigest the precalculated binary hash of the string
* "username:realm:password",
* see #MHD_digest_auth_calc_userdigest()
* @param userdigest_size the size of the @a userdigest in bytes, must match the
* hashing algorithm (see #MHD_MD5_DIGEST_SIZE,
* #MHD_SHA256_DIGEST_SIZE, #MHD_SHA512_256_DIGEST_SIZE,
* #MHD_digest_get_hash_size())
* @param nonce_timeout the period of seconds since nonce generation, when
* the nonce is recognised as valid and not stale;
* if zero is specified then daemon default value is used.
* @param max_nc the maximum allowed nc (Nonce Count) value, if client's nc
* exceeds the specified value then MHD_DAUTH_NONCE_STALE is
* returned;
* if zero is specified then daemon default value is used.
* @param mqop the QOP to use
* @param malgo3 digest algorithms allowed to use, fail if algorithm used
* by the client is not allowed by this parameter;
* more than one base algorithms (MD5, SHA-256, SHA-512/256)
* cannot be used at the same time for this function
* as @a userdigest must match specified algorithm
* @return #MHD_DAUTH_OK if authenticated,
* the error code otherwise
* @sa #MHD_digest_auth_calc_userdigest()
* @note Available since #MHD_VERSION 0x00097701
* @ingroup authentication
*/
_MHD_EXTERN enum MHD_DigestAuthResult
MHD_digest_auth_check_digest3 (struct MHD_Connection *connection,
const char *realm,
const char *username,
const void *userdigest,
size_t userdigest_size,
unsigned int nonce_timeout,
uint32_t max_nc,
enum MHD_DigestAuthMultiQOP mqop,
enum MHD_DigestAuthMultiAlgo3 malgo3);
/**
* Queues a response to request authentication from the client
*
* This function modifies provided @a response. The @a response must not be
* reused and should be destroyed (by #MHD_destroy_response()) after call of
* this function.
*
* If @a mqop allows both RFC 2069 (MHD_DIGEST_AUTH_QOP_NONE) and QOP with
* value, then response is formed like if MHD_DIGEST_AUTH_QOP_NONE bit was
* not set, because such response should be backward-compatible with RFC 2069.
*
* If @a mqop allows only MHD_DIGEST_AUTH_MULT_QOP_NONE, then the response is
* formed in strict accordance with RFC 2069 (no 'qop', no 'userhash', no
* 'charset'). For better compatibility with clients, it is recommended (but
* not required) to set @a domain to NULL in this mode.
*
* @param connection the MHD connection structure
* @param realm the realm presented to the client
* @param opaque the string for opaque value, can be NULL, but NULL is
* not recommended for better compatibility with clients;
* the recommended format is hex or Base64 encoded string
* @param domain the optional space-separated list of URIs for which the
* same authorisation could be used, URIs can be in form
* "path-absolute" (the path for the same host with initial slash)
* or in form "absolute-URI" (the full path with protocol), in
* any case client may assume that URI is in the same "protection
* space" if it starts with any of values specified here;
* could be NULL (clients typically assume that the same
* credentials could be used for any URI on the same host);
* this list provides information for the client only and does
* not actually restrict anything on the server side
* @param response the reply to send; should contain the "access denied"
* body;
* note: this function sets the "WWW Authenticate" header and
* the caller should not set this header;
* the NULL is tolerated
* @param signal_stale if set to #MHD_YES then indication of stale nonce used in
* the client's request is signalled by adding 'stale=true'
* to the authentication header, this instructs the client
* to retry immediately with the new nonce and the same
* credentials, without asking user for the new password
* @param mqop the QOP to use
* @param malgo3 digest algorithm to use; if several algorithms are allowed
* then MD5 is preferred (currently, may be changed in next
* versions)
* @param userhash_support if set to non-zero value (#MHD_YES) then support of
* userhash is indicated, allowing client to provide
* hash("username:realm") instead of the username in
* clear text;
* note that clients are allowed to provide the username
* in cleartext even if this parameter set to non-zero;
* when userhash is used, application must be ready to
* identify users by provided userhash value instead of
* username; see #MHD_digest_auth_calc_userhash() and
* #MHD_digest_auth_calc_userhash_hex()
* @param prefer_utf8 if not set to #MHD_NO, parameter 'charset=UTF-8' is
* added, indicating for the client that UTF-8 encoding for
* the username is preferred
* @return #MHD_YES on success, #MHD_NO otherwise
* @note Available since #MHD_VERSION 0x00097701
* @ingroup authentication
*/
_MHD_EXTERN enum MHD_Result
MHD_queue_auth_required_response3 (struct MHD_Connection *connection,
const char *realm,
const char *opaque,
const char *domain,
struct MHD_Response *response,
int signal_stale,
enum MHD_DigestAuthMultiQOP mqop,
enum MHD_DigestAuthMultiAlgo3 algo,
int userhash_support,
int prefer_utf8);
/**
* Constant to indicate that the nonce of the provided
* authentication code was wrong.
* Used as return code by #MHD_digest_auth_check(), #MHD_digest_auth_check2(),
* #MHD_digest_auth_check_digest(), #MHD_digest_auth_check_digest2().
* @ingroup authentication
*/
#define MHD_INVALID_NONCE -1
/**
* Get the username from the authorization header sent by the client
*
* This function supports username in standard and extended notations.
* "userhash" is not supported by this function.
*
* @param connection The MHD connection structure
* @return NULL if no username could be found, username provided as
* "userhash", extended notation broken or memory allocation error
* occurs;
* a pointer to the username if found, free using #MHD_free().
* @warning Returned value must be freed by #MHD_free().
* @sa #MHD_digest_auth_get_username3()
* @ingroup authentication
*/
_MHD_EXTERN char *
MHD_digest_auth_get_username (struct MHD_Connection *connection);
/**
* Which digest algorithm should MHD use for HTTP digest authentication?
* Used as parameter for #MHD_digest_auth_check2(),
* #MHD_digest_auth_check_digest2(), #MHD_queue_auth_fail_response2().
*/
enum MHD_DigestAuthAlgorithm
{
/**
* MHD should pick (currently defaults to MD5).
*/
MHD_DIGEST_ALG_AUTO = 0,
/**
* Force use of MD5.
*/
MHD_DIGEST_ALG_MD5,
/**
* Force use of SHA-256.
*/
MHD_DIGEST_ALG_SHA256
} _MHD_FIXED_ENUM;
/**
* Authenticates the authorization header sent by the client.
*
* @param connection The MHD connection structure
* @param realm The realm presented to the client
* @param username The username needs to be authenticated
* @param password The password used in the authentication
* @param nonce_timeout The amount of time for a nonce to be
* invalid in seconds
* @param algo digest algorithms allowed for verification
* @return #MHD_YES if authenticated, #MHD_NO if not,
* #MHD_INVALID_NONCE if nonce is invalid or stale
* @note Available since #MHD_VERSION 0x00096200
* @deprecated use MHD_digest_auth_check3()
* @ingroup authentication
*/
_MHD_EXTERN int
MHD_digest_auth_check2 (struct MHD_Connection *connection,
const char *realm,
const char *username,
const char *password,
unsigned int nonce_timeout,
enum MHD_DigestAuthAlgorithm algo);
/**
* Authenticates the authorization header sent by the client.
* Uses #MHD_DIGEST_ALG_MD5 (for now, for backwards-compatibility).
* Note that this MAY change to #MHD_DIGEST_ALG_AUTO in the future.
* If you want to be sure you get MD5, use #MHD_digest_auth_check2()
* and specify MD5 explicitly.
*
* @param connection The MHD connection structure
* @param realm The realm presented to the client
* @param username The username needs to be authenticated
* @param password The password used in the authentication
* @param nonce_timeout The amount of time for a nonce to be
* invalid in seconds
* @return #MHD_YES if authenticated, #MHD_NO if not,
* #MHD_INVALID_NONCE if nonce is invalid or stale
* @deprecated use MHD_digest_auth_check3()
* @ingroup authentication
*/
_MHD_EXTERN int
MHD_digest_auth_check (struct MHD_Connection *connection,
const char *realm,
const char *username,
const char *password,
unsigned int nonce_timeout);
/**
* Authenticates the authorization header sent by the client.
*
* @param connection The MHD connection structure
* @param realm The realm presented to the client
* @param username The username needs to be authenticated
* @param digest An `unsigned char *' pointer to the binary MD5 sum
* for the precalculated hash value "username:realm:password"
* of @a digest_size bytes
* @param digest_size number of bytes in @a digest (size must match @a algo!)
* @param nonce_timeout The amount of time for a nonce to be
* invalid in seconds
* @param algo digest algorithms allowed for verification
* @return #MHD_YES if authenticated, #MHD_NO if not,
* #MHD_INVALID_NONCE if nonce is invalid or stale
* @note Available since #MHD_VERSION 0x00096200
* @deprecated use MHD_digest_auth_check_digest3()
* @ingroup authentication
*/
_MHD_EXTERN int
MHD_digest_auth_check_digest2 (struct MHD_Connection *connection,
const char *realm,
const char *username,
const uint8_t *digest,
size_t digest_size,
unsigned int nonce_timeout,
enum MHD_DigestAuthAlgorithm algo);
/**
* Authenticates the authorization header sent by the client
* Uses #MHD_DIGEST_ALG_MD5 (required, as @a digest is of fixed
* size).
*
* @param connection The MHD connection structure
* @param realm The realm presented to the client
* @param username The username needs to be authenticated
* @param digest An `unsigned char *' pointer to the binary hash
* for the precalculated hash value "username:realm:password";
* length must be #MHD_MD5_DIGEST_SIZE bytes
* @param nonce_timeout The amount of time for a nonce to be
* invalid in seconds
* @return #MHD_YES if authenticated, #MHD_NO if not,
* #MHD_INVALID_NONCE if nonce is invalid or stale
* @note Available since #MHD_VERSION 0x00096000
* @deprecated use #MHD_digest_auth_check_digest3()
* @ingroup authentication
*/
_MHD_EXTERN int
MHD_digest_auth_check_digest (struct MHD_Connection *connection,
const char *realm,
const char *username,
const uint8_t digest[MHD_MD5_DIGEST_SIZE],
unsigned int nonce_timeout);
/**
* Queues a response to request authentication from the client
*
* This function modifies provided @a response. The @a response must not be
* reused and should be destroyed after call of this function.
*
* @param connection The MHD connection structure
* @param realm the realm presented to the client
* @param opaque string to user for opaque value
* @param response reply to send; should contain the "access denied"
* body; note that this function will set the "WWW Authenticate"
* header and that the caller should not do this; the NULL is tolerated
* @param signal_stale #MHD_YES if the nonce is stale to add
* 'stale=true' to the authentication header
* @param algo digest algorithm to use
* @return #MHD_YES on success, #MHD_NO otherwise
* @note Available since #MHD_VERSION 0x00096200
* @deprecated use MHD_queue_auth_required_response3()
* @ingroup authentication
*/
_MHD_EXTERN enum MHD_Result
MHD_queue_auth_fail_response2 (struct MHD_Connection *connection,
const char *realm,
const char *opaque,
struct MHD_Response *response,
int signal_stale,
enum MHD_DigestAuthAlgorithm algo);
/**
* Queues a response to request authentication from the client.
* For now uses MD5 (for backwards-compatibility). Still, if you
* need to be sure, use #MHD_queue_auth_fail_response2().
*
* This function modifies provided @a response. The @a response must not be
* reused and should be destroyed after call of this function.
*
* @param connection The MHD connection structure
* @param realm the realm presented to the client
* @param opaque string to user for opaque value
* @param response reply to send; should contain the "access denied"
* body; note that this function will set the "WWW Authenticate"
* header and that the caller should not do this; the NULL is tolerated
* @param signal_stale #MHD_YES if the nonce is stale to add
* 'stale=true' to the authentication header
* @return #MHD_YES on success, #MHD_NO otherwise
* @deprecated use MHD_queue_auth_required_response3()
* @ingroup authentication
*/
_MHD_EXTERN enum MHD_Result
MHD_queue_auth_fail_response (struct MHD_Connection *connection,
const char *realm,
const char *opaque,
struct MHD_Response *response,
int signal_stale);
/* ********************* Basic Authentication functions *************** */
/**
* Information decoded from Basic Authentication client's header.
*
* The username and the password are technically allowed to have binary zeros,
* username_len and password_len could be used to detect such situations.
*
* The buffers pointed by username and password members are freed
* when #MHD_free() is called for pointer to this structure.
*
* Application may modify buffers as needed until #MHD_free() is called for
* pointer to this structure
*/
struct MHD_BasicAuthInfo
{
/**
* The username, cannot be NULL.
* The buffer pointed by the @a username becomes invalid when the pointer
* to the structure is freed by #MHD_free().
*/
char *username;
/**
* The length of the @a username, not including zero-termination
*/
size_t username_len;
/**
* The password, may be NULL if password is not encoded by the client.
* The buffer pointed by the @a password becomes invalid when the pointer
* to the structure is freed by #MHD_free().
*/
char *password;
/**
* The length of the @a password, not including zero-termination;
* when the @a password is NULL, the length is always zero.
*/
size_t password_len;
};
/**
* Get the username and password from the Basic Authorisation header
* sent by the client
*
* @param connection the MHD connection structure
* @return NULL if no valid Basic Authentication header is present in
* current request, or
* pointer to structure with username and password, which must be
* freed by #MHD_free().
* @note Available since #MHD_VERSION 0x00097701
* @ingroup authentication
*/
_MHD_EXTERN struct MHD_BasicAuthInfo *
MHD_basic_auth_get_username_password3 (struct MHD_Connection *connection);
/**
* Queues a response to request basic authentication from the client.
*
* The given response object is expected to include the payload for
* the response; the "WWW-Authenticate" header will be added and the
* response queued with the 'UNAUTHORIZED' status code.
*
* See RFC 7617#section-2 for details.
*
* The @a response is modified by this function. The modified response object
* can be used to respond subsequent requests by #MHD_queue_response()
* function with status code #MHD_HTTP_UNAUTHORIZED and must not be used again
* with MHD_queue_basic_auth_required_response3() function. The response could
* be destroyed right after call of this function.
*
* @param connection the MHD connection structure
* @param realm the realm presented to the client
* @param prefer_utf8 if not set to #MHD_NO, parameter'charset="UTF-8"' will
* be added, indicating for client that UTF-8 encoding
* is preferred
* @param response the response object to modify and queue; the NULL
* is tolerated
* @return #MHD_YES on success, #MHD_NO otherwise
* @note Available since #MHD_VERSION 0x00097704
* @ingroup authentication
*/
_MHD_EXTERN enum MHD_Result
MHD_queue_basic_auth_required_response3 (struct MHD_Connection *connection,
const char *realm,
int prefer_utf8,
struct MHD_Response *response);
/**
* Get the username and password from the basic authorization header sent by the client
*
* @param connection The MHD connection structure
* @param[out] password a pointer for the password, free using #MHD_free().
* @return NULL if no username could be found, a pointer
* to the username if found, free using #MHD_free().
* @deprecated use #MHD_basic_auth_get_username_password3()
* @ingroup authentication
*/
_MHD_EXTERN char *
MHD_basic_auth_get_username_password (struct MHD_Connection *connection,
char **password);
/**
* Queues a response to request basic authentication from the client
* The given response object is expected to include the payload for
* the response; the "WWW-Authenticate" header will be added and the
* response queued with the 'UNAUTHORIZED' status code.
*
* @param connection The MHD connection structure
* @param realm the realm presented to the client
* @param response response object to modify and queue; the NULL is tolerated
* @return #MHD_YES on success, #MHD_NO otherwise
* @deprecated use MHD_queue_basic_auth_required_response3()
* @ingroup authentication
*/
_MHD_EXTERN enum MHD_Result
MHD_queue_basic_auth_fail_response (struct MHD_Connection *connection,
const char *realm,
struct MHD_Response *response);
/* ********************** generic query functions ********************** */
/**
* Obtain information about the given connection.
* The returned pointer is invalidated with the next call of this function or
* when the connection is closed.
*
* @param connection what connection to get information about
* @param info_type what information is desired?
* @param ... depends on @a info_type
* @return NULL if this information is not available
* (or if the @a info_type is unknown)
* @ingroup specialized
*/
_MHD_EXTERN const union MHD_ConnectionInfo *
MHD_get_connection_info (struct MHD_Connection *connection,
enum MHD_ConnectionInfoType info_type,
...);
/**
* MHD connection options. Given to #MHD_set_connection_option to
* set custom options for a particular connection.
*/
enum MHD_CONNECTION_OPTION
{
/**
* Set a custom timeout for the given connection. Specified
* as the number of seconds, given as an `unsigned int`. Use
* zero for no timeout.
* If timeout was set to zero (or unset) before, setup of new value by
* MHD_set_connection_option() will reset timeout timer.
* Values larger than (UINT64_MAX / 2000 - 1) will
* be clipped to this number.
*/
MHD_CONNECTION_OPTION_TIMEOUT
} _MHD_FIXED_ENUM;
/**
* Set a custom option for the given connection, overriding defaults.
*
* @param connection connection to modify
* @param option option to set
* @param ... arguments to the option, depending on the option type
* @return #MHD_YES on success, #MHD_NO if setting the option failed
* @ingroup specialized
*/
_MHD_EXTERN enum MHD_Result
MHD_set_connection_option (struct MHD_Connection *connection,
enum MHD_CONNECTION_OPTION option,
...);
/**
* Information about an MHD daemon.
*/
union MHD_DaemonInfo
{
/**
* Size of the key, no longer supported.
* @deprecated
*/
size_t key_size;
/**
* Size of the mac key, no longer supported.
* @deprecated
*/
size_t mac_key_size;
/**
* Socket, returned for #MHD_DAEMON_INFO_LISTEN_FD.
*/
MHD_socket listen_fd;
/**
* Bind port number, returned for #MHD_DAEMON_INFO_BIND_PORT.
*/
uint16_t port;
/**
* epoll FD, returned for #MHD_DAEMON_INFO_EPOLL_FD.
*/
int epoll_fd;
/**
* Number of active connections, for #MHD_DAEMON_INFO_CURRENT_CONNECTIONS.
*/
unsigned int num_connections;
/**
* Combination of #MHD_FLAG values, for #MHD_DAEMON_INFO_FLAGS.
* This value is actually a bitfield.
* Note: flags may differ from original 'flags' specified for
* daemon, especially if #MHD_USE_AUTO was set.
*/
enum MHD_FLAG flags;
};
/**
* Obtain information about the given daemon.
* The returned pointer is invalidated with the next call of this function or
* when the daemon is stopped.
*
* @param daemon what daemon to get information about
* @param info_type what information is desired?
* @param ... depends on @a info_type
* @return NULL if this information is not available
* (or if the @a info_type is unknown)
* @ingroup specialized
*/
_MHD_EXTERN const union MHD_DaemonInfo *
MHD_get_daemon_info (struct MHD_Daemon *daemon,
enum MHD_DaemonInfoType info_type,
...);
/**
* Obtain the version of this library
*
* @return static version string, e.g. "0.9.9"
* @ingroup specialized
*/
_MHD_EXTERN const char *
MHD_get_version (void);
/**
* Obtain the version of this library as a binary value.
*
* @return version binary value, e.g. "0x00090900" (#MHD_VERSION of
* compiled MHD binary)
* @note Available since #MHD_VERSION 0x00097601
* @ingroup specialized
*/
_MHD_EXTERN uint32_t
MHD_get_version_bin (void);
/**
* Types of information about MHD features,
* used by #MHD_is_feature_supported().
*/
enum MHD_FEATURE
{
/**
* Get whether messages are supported. If supported then in debug
* mode messages can be printed to stderr or to external logger.
*/
MHD_FEATURE_MESSAGES = 1,
/**
* Get whether HTTPS is supported. If supported then flag
* #MHD_USE_TLS and options #MHD_OPTION_HTTPS_MEM_KEY,
* #MHD_OPTION_HTTPS_MEM_CERT, #MHD_OPTION_HTTPS_MEM_TRUST,
* #MHD_OPTION_HTTPS_MEM_DHPARAMS, #MHD_OPTION_HTTPS_CRED_TYPE,
* #MHD_OPTION_HTTPS_PRIORITIES can be used.
*/
MHD_FEATURE_TLS = 2,
MHD_FEATURE_SSL = 2,
/**
* Get whether option #MHD_OPTION_HTTPS_CERT_CALLBACK is
* supported.
*/
MHD_FEATURE_HTTPS_CERT_CALLBACK = 3,
/**
* Get whether IPv6 is supported. If supported then flag
* #MHD_USE_IPv6 can be used.
*/
MHD_FEATURE_IPv6 = 4,
/**
* Get whether IPv6 without IPv4 is supported. If not supported
* then IPv4 is always enabled in IPv6 sockets and
* flag #MHD_USE_DUAL_STACK is always used when #MHD_USE_IPv6 is
* specified.
*/
MHD_FEATURE_IPv6_ONLY = 5,
/**
* Get whether `poll()` is supported. If supported then flag
* #MHD_USE_POLL can be used.
*/
MHD_FEATURE_POLL = 6,
/**
* Get whether `epoll()` is supported. If supported then Flags
* #MHD_USE_EPOLL and
* #MHD_USE_EPOLL_INTERNAL_THREAD can be used.
*/
MHD_FEATURE_EPOLL = 7,
/**
* Get whether shutdown on listen socket to signal other
* threads is supported. If not supported flag
* #MHD_USE_ITC is automatically forced.
*/
MHD_FEATURE_SHUTDOWN_LISTEN_SOCKET = 8,
/**
* Get whether socketpair is used internally instead of pipe to
* signal other threads.
*/
MHD_FEATURE_SOCKETPAIR = 9,
/**
* Get whether TCP Fast Open is supported. If supported then
* flag #MHD_USE_TCP_FASTOPEN and option
* #MHD_OPTION_TCP_FASTOPEN_QUEUE_SIZE can be used.
*/
MHD_FEATURE_TCP_FASTOPEN = 10,
/**
* Get whether HTTP Basic authorization is supported. If supported
* then functions #MHD_basic_auth_get_username_password and
* #MHD_queue_basic_auth_fail_response can be used.
*/
MHD_FEATURE_BASIC_AUTH = 11,
/**
* Get whether HTTP Digest authorization is supported. If
* supported then options #MHD_OPTION_DIGEST_AUTH_RANDOM,
* #MHD_OPTION_NONCE_NC_SIZE and
* #MHD_digest_auth_check() can be used.
*/
MHD_FEATURE_DIGEST_AUTH = 12,
/**
* Get whether postprocessor is supported. If supported then
* functions #MHD_create_post_processor(), #MHD_post_process() and
* #MHD_destroy_post_processor() can
* be used.
*/
MHD_FEATURE_POSTPROCESSOR = 13,
/**
* Get whether password encrypted private key for HTTPS daemon is
* supported. If supported then option
* ::MHD_OPTION_HTTPS_KEY_PASSWORD can be used.
*/
MHD_FEATURE_HTTPS_KEY_PASSWORD = 14,
/**
* Get whether reading files beyond 2 GiB boundary is supported.
* If supported then #MHD_create_response_from_fd(),
* #MHD_create_response_from_fd64 #MHD_create_response_from_fd_at_offset()
* and #MHD_create_response_from_fd_at_offset64() can be used with sizes and
* offsets larger than 2 GiB. If not supported value of size+offset is
* limited to 2 GiB.
*/
MHD_FEATURE_LARGE_FILE = 15,
/**
* Get whether MHD set names on generated threads.
*/
MHD_FEATURE_THREAD_NAMES = 16,
MHD_THREAD_NAMES = 16,
/**
* Get whether HTTP "Upgrade" is supported.
* If supported then #MHD_ALLOW_UPGRADE, #MHD_upgrade_action() and
* #MHD_create_response_for_upgrade() can be used.
*/
MHD_FEATURE_UPGRADE = 17,
/**
* Get whether it's safe to use same FD for multiple calls of
* #MHD_create_response_from_fd() and whether it's safe to use single
* response generated by #MHD_create_response_from_fd() with multiple
* connections at same time.
* If #MHD_is_feature_supported() return #MHD_NO for this feature then
* usage of responses with same file FD in multiple parallel threads may
* results in incorrect data sent to remote client.
* It's always safe to use same file FD in multiple responses if MHD
* is run in any single thread mode.
*/
MHD_FEATURE_RESPONSES_SHARED_FD = 18,
/**
* Get whether MHD support automatic detection of bind port number.
* @sa #MHD_DAEMON_INFO_BIND_PORT
*/
MHD_FEATURE_AUTODETECT_BIND_PORT = 19,
/**
* Get whether MHD supports automatic SIGPIPE suppression.
* If SIGPIPE suppression is not supported, application must handle
* SIGPIPE signal by itself.
*/
MHD_FEATURE_AUTOSUPPRESS_SIGPIPE = 20,
/**
* Get whether MHD use system's sendfile() function to send
* file-FD based responses over non-TLS connections.
* @note Since v0.9.56
*/
MHD_FEATURE_SENDFILE = 21,
/**
* Get whether MHD supports threads.
*/
MHD_FEATURE_THREADS = 22,
/**
* Get whether option #MHD_OPTION_HTTPS_CERT_CALLBACK2 is
* supported.
*/
MHD_FEATURE_HTTPS_CERT_CALLBACK2 = 23,
/**
* Get whether automatic parsing of HTTP Cookie header is supported.
* If disabled, no MHD_COOKIE_KIND will be generated by MHD.
* MHD versions before 0x00097701 always support cookie parsing.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_FEATURE_HTTPS_COOKIE_PARSING = 24,
/**
* Get whether the early version the Digest Authorization (RFC 2069) is
* supported (digest authorisation without QOP parameter).
* Since #MHD_VERSION 0x00097701 it is always supported if Digest Auth
* module is built.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_FEATURE_DIGEST_AUTH_RFC2069 = 25,
/**
* Get whether the MD5-based hashing algorithms are supported for Digest
* Authorization.
* Currently it is always supported if Digest Auth module is built
* unless manually disabled in a custom build.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_FEATURE_DIGEST_AUTH_MD5 = 26,
/**
* Get whether the SHA-256-based hashing algorithms are supported for Digest
* Authorization.
* It is always supported since #MHD_VERSION 0x00096200 if Digest Auth
* module is built unless manually disabled in a custom build.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_FEATURE_DIGEST_AUTH_SHA256 = 27,
/**
* Get whether the SHA-512/256-based hashing algorithms are supported
* for Digest Authorization.
* It it always supported since #MHD_VERSION 0x00097701 if Digest Auth
* module is built unless manually disabled in a custom build.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_FEATURE_DIGEST_AUTH_SHA512_256 = 28,
/**
* Get whether QOP with value 'auth-int' (authentication with integrity
* protection) is supported for Digest Authorization.
* Currently it is always not supported.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_FEATURE_DIGEST_AUTH_AUTH_INT = 29,
/**
* Get whether 'session' algorithms (like 'MD5-sess') are supported for Digest
* Authorization.
* Currently it is always not supported.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_FEATURE_DIGEST_AUTH_ALGO_SESSION = 30,
/**
* Get whether 'userhash' is supported for Digest Authorization.
* It is always supported since #MHD_VERSION 0x00097701 if Digest Auth
* module is built.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_FEATURE_DIGEST_AUTH_USERHASH = 31,
/**
* Get whether any of hashing algorithms is implemented by external
* function (like TLS library) and may fail due to external conditions,
* like "out-of-memory".
*
* If result is #MHD_YES then functions which use hash calculations
* like #MHD_digest_auth_calc_userhash(), #MHD_digest_auth_check3() and others
* potentially may fail even with valid input because of out-of-memory error
* or crypto accelerator device failure, however in practice such fails are
* unlikely.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_FEATURE_EXTERN_HASH = 32,
/**
* Get whether MHD was built with asserts enabled.
* For debug builds the error log is always enabled even if #MHD_USE_ERROR_LOG
* is not specified for daemon.
* @note Available since #MHD_VERSION 0x00097701
*/
MHD_FEATURE_DEBUG_BUILD = 33,
/**
* Get whether MHD was build with support for overridable FD_SETSIZE.
* This feature should be always available when the relevant platform ability
* is detected.
* @sa #MHD_OPTION_APP_FD_SETSIZE
* @note Available since #MHD_VERSION 0x00097705
*/
MHD_FEATURE_FLEXIBLE_FD_SETSIZE = 34
};
/**
* Get information about supported MHD features.
* Indicate that MHD was compiled with or without support for
* particular feature. Some features require additional support
* by kernel. Kernel support is not checked by this function.
*
* @param feature type of requested information
* @return #MHD_YES if feature is supported by MHD, #MHD_NO if
* feature is not supported or feature is unknown.
* @ingroup specialized
*/
_MHD_EXTERN enum MHD_Result
MHD_is_feature_supported (enum MHD_FEATURE feature);
#ifdef __cplusplus
#if 0 /* keep Emacsens' auto-indent happy */
{
#endif
}
#endif
#endif
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