314 lines
15 KiB
C
314 lines
15 KiB
C
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#ifndef http_parser_h
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#define http_parser_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define HTTP_PARSER_VERSION_MAJOR 2
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#define HTTP_PARSER_VERSION_MINOR 9
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#define HTTP_PARSER_VERSION_PATCH 4
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#include <stddef.h>
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#if defined(_WIN32) && !defined(__MINGW32__) && \
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(!defined(_MSC_VER) || _MSC_VER < 1600) && !defined(__WINE__)
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#include <BaseTsd.h>
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typedef __int8 int8_t;
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typedef unsigned __int8 uint8_t;
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typedef __int16 int16_t;
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typedef unsigned __int16 uint16_t;
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typedef __int32 int32_t;
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typedef unsigned __int32 uint32_t;
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typedef __int64 int64_t;
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typedef unsigned __int64 uint64_t;
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#else
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#include <stdint.h>
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#endif
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#ifndef HTTP_PARSER_STRICT
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#define HTTP_PARSER_STRICT 1
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#endif
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#ifndef HTTP_MAX_HEADER_SIZE
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#define HTTP_MAX_HEADER_SIZE (80 * 1024)
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#endif
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using http_parser = struct http_parser;
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using http_parser_settings = struct http_parser_settings;
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using http_data_cb = int (*)(http_parser *, const char *, size_t);
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using http_cb = int (*)(http_parser *);
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#define HTTP_STATUS_MAP(XX) \
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XX(100, CONTINUE, Continue) \
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XX(101, SWITCHING_PROTOCOLS, Switching Protocols) \
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XX(102, PROCESSING, Processing) \
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XX(200, OK, OK) \
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XX(201, CREATED, Created) \
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XX(202, ACCEPTED, Accepted) \
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XX(203, NON_AUTHORITATIVE_INFORMATION, Non - Authoritative Information) \
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XX(204, NO_CONTENT, No Content) \
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XX(205, RESET_CONTENT, Reset Content) \
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XX(206, PARTIAL_CONTENT, Partial Content) \
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XX(207, MULTI_STATUS, Multi - Status) \
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XX(208, ALREADY_REPORTED, Already Reported) \
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XX(226, IM_USED, IM Used) \
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XX(300, MULTIPLE_CHOICES, Multiple Choices) \
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XX(301, MOVED_PERMANENTLY, Moved Permanently) \
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XX(302, FOUND, Found) \
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XX(303, SEE_OTHER, See Other) \
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XX(304, NOT_MODIFIED, Not Modified) \
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XX(305, USE_PROXY, Use Proxy) \
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XX(307, TEMPORARY_REDIRECT, Temporary Redirect) \
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XX(308, PERMANENT_REDIRECT, Permanent Redirect) \
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XX(400, BAD_REQUEST, Bad Request) \
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XX(401, UNAUTHORIZED, Unauthorized) \
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XX(402, PAYMENT_REQUIRED, Payment Required) \
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XX(403, FORBIDDEN, Forbidden) \
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XX(404, NOT_FOUND, Not Found) \
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XX(405, METHOD_NOT_ALLOWED, Method Not Allowed) \
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XX(406, NOT_ACCEPTABLE, Not Acceptable) \
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XX(407, PROXY_AUTHENTICATION_REQUIRED, Proxy Authentication Required) \
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XX(408, REQUEST_TIMEOUT, Request Timeout) \
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XX(409, CONFLICT, Conflict) \
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XX(410, GONE, Gone) \
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XX(411, LENGTH_REQUIRED, Length Required) \
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XX(412, PRECONDITION_FAILED, Precondition Failed) \
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XX(413, PAYLOAD_TOO_LARGE, Payload Too Large) \
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XX(414, URI_TOO_LONG, URI Too Long) \
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XX(415, UNSUPPORTED_MEDIA_TYPE, Unsupported Media Type) \
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XX(416, RANGE_NOT_SATISFIABLE, Range Not Satisfiable) \
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XX(417, EXPECTATION_FAILED, Expectation Failed) \
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XX(421, MISDIRECTED_REQUEST, Misdirected Request) \
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XX(422, UNPROCESSABLE_ENTITY, Unprocessable Entity) \
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XX(423, LOCKED, Locked) \
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XX(424, FAILED_DEPENDENCY, Failed Dependency) \
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XX(426, UPGRADE_REQUIRED, Upgrade Required) \
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XX(428, PRECONDITION_REQUIRED, Precondition Required) \
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XX(429, TOO_MANY_REQUESTS, Too Many Requests) \
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XX(431, REQUEST_HEADER_FIELDS_TOO_LARGE, Request Header Fields Too Large) \
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XX(451, UNAVAILABLE_FOR_LEGAL_REASONS, Unavailable For Legal Reasons) \
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XX(500, INTERNAL_SERVER_ERROR, Internal Server Error) \
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XX(501, NOT_IMPLEMENTED, Not Implemented) \
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XX(502, BAD_GATEWAY, Bad Gateway) \
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XX(503, SERVICE_UNAVAILABLE, Service Unavailable) \
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XX(504, GATEWAY_TIMEOUT, Gateway Timeout) \
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XX(505, HTTP_VERSION_NOT_SUPPORTED, HTTP Version Not Supported) \
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XX(506, VARIANT_ALSO_NEGOTIATES, Variant Also Negotiates) \
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XX(507, INSUFFICIENT_STORAGE, Insufficient Storage) \
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XX(508, LOOP_DETECTED, Loop Detected) \
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XX(510, NOT_EXTENDED, Not Extended) \
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XX(511, NETWORK_AUTHENTICATION_REQUIRED, Network Authentication Required)
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enum http_status {
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#define XX(num, name, string) HTTP_STATUS_##name = num,
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HTTP_STATUS_MAP(XX)
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#undef XX
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};
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#define HTTP_METHOD_MAP(XX) \
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XX(0, DELETE, DELETE) \
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XX(1, GET, GET) \
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XX(2, HEAD, HEAD) \
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XX(3, POST, POST) \
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XX(4, PUT, PUT) \
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\
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XX(5, CONNECT, CONNECT) \
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XX(6, OPTIONS, OPTIONS) \
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XX(7, TRACE, TRACE) \
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\
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XX(8, COPY, COPY) \
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XX(9, LOCK, LOCK) \
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XX(10, MKCOL, MKCOL) \
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XX(11, MOVE, MOVE) \
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XX(12, PROPFIND, PROPFIND) \
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XX(13, PROPPATCH, PROPPATCH) \
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XX(14, SEARCH, SEARCH) \
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XX(15, UNLOCK, UNLOCK) \
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XX(16, BIND, BIND) \
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XX(17, REBIND, REBIND) \
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XX(18, UNBIND, UNBIND) \
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XX(19, ACL, ACL) \
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\
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XX(20, REPORT, REPORT) \
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XX(21, MKACTIVITY, MKACTIVITY) \
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XX(22, CHECKOUT, CHECKOUT) \
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XX(23, MERGE, MERGE) \
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\
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XX(24, MSEARCH, M - SEARCH) \
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XX(25, NOTIFY, NOTIFY) \
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XX(26, SUBSCRIBE, SUBSCRIBE) \
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XX(27, UNSUBSCRIBE, UNSUBSCRIBE) \
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\
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XX(28, PATCH, PATCH) \
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XX(29, PURGE, PURGE) \
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\
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XX(30, MKCALENDAR, MKCALENDAR) \
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\
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XX(31, LINK, LINK) \
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XX(32, UNLINK, UNLINK) \
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\
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XX(33, SOURCE, SOURCE)
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enum http_method {
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#define XX(num, name, string) HTTP_##name = num,
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HTTP_METHOD_MAP(XX)
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#undef XX
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};
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enum http_parser_type { HTTP_REQUEST, HTTP_RESPONSE, HTTP_BOTH };
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enum flags {
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F_CHUNKED = 1 << 0,
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F_CONNECTION_KEEP_ALIVE = 1 << 1,
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F_CONNECTION_CLOSE = 1 << 2,
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F_CONNECTION_UPGRADE = 1 << 3,
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F_TRAILING = 1 << 4,
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F_UPGRADE = 1 << 5,
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F_SKIPBODY = 1 << 6,
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F_CONTENTLENGTH = 1 << 7,
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F_TRANSFER_ENCODING = 1 << 8
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};
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#define HTTP_ERRNO_MAP(XX) \
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\
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XX(OK, "success") \
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\
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XX(CB_message_begin, "the on_message_begin callback failed") \
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XX(CB_url, "the on_url callback failed") \
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XX(CB_header_field, "the on_header_field callback failed") \
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XX(CB_header_value, "the on_header_value callback failed") \
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XX(CB_headers_complete, "the on_headers_complete callback failed") \
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XX(CB_body, "the on_body callback failed") \
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XX(CB_message_complete, "the on_message_complete callback failed") \
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XX(CB_status, "the on_status callback failed") \
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XX(CB_chunk_header, "the on_chunk_header callback failed") \
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XX(CB_chunk_complete, "the on_chunk_complete callback failed") \
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\
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XX(INVALID_EOF_STATE, "stream ended at an unexpected time") \
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XX(HEADER_OVERFLOW, "too many header bytes seen; overflow detected") \
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XX(CLOSED_CONNECTION, \
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"data received after completed connection: close message") \
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XX(INVALID_VERSION, "invalid HTTP version") \
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XX(INVALID_STATUS, "invalid HTTP status code") \
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XX(INVALID_METHOD, "invalid HTTP method") \
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XX(INVALID_URL, "invalid URL") \
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XX(INVALID_HOST, "invalid host") \
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XX(INVALID_PORT, "invalid port") \
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XX(INVALID_PATH, "invalid path") \
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XX(INVALID_QUERY_STRING, "invalid query string") \
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XX(INVALID_FRAGMENT, "invalid fragment") \
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XX(LF_EXPECTED, "LF character expected") \
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XX(INVALID_HEADER_TOKEN, "invalid character in header") \
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XX(INVALID_CONTENT_LENGTH, "invalid character in content-length header") \
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XX(UNEXPECTED_CONTENT_LENGTH, "unexpected content-length header") \
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XX(INVALID_CHUNK_SIZE, "invalid character in chunk size header") \
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XX(INVALID_CONSTANT, "invalid constant string") \
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XX(INVALID_INTERNAL_STATE, "encountered unexpected internal state") \
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XX(STRICT, "strict mode assertion failed") \
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XX(PAUSED, "parser is paused") \
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XX(UNKNOWN, "an unknown error occurred") \
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XX(INVALID_TRANSFER_ENCODING, "request has invalid transfer-encoding")
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#define HTTP_ERRNO_GEN(n, s) HPE_##n,
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enum http_errno { HTTP_ERRNO_MAP(HTTP_ERRNO_GEN) };
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#undef HTTP_ERRNO_GEN
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#define HTTP_PARSER_ERRNO(p) ((enum http_errno)(p)->http_errno)
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struct http_parser {
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unsigned int type : 2;
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unsigned int flags : 8;
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unsigned int state : 7;
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unsigned int header_state : 7;
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unsigned int index : 5;
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unsigned int extra_flags : 2;
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unsigned int lenient_http_headers : 1;
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uint32_t nread;
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uint64_t content_length;
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unsigned short http_major;
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unsigned short http_minor;
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unsigned int status_code : 16;
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unsigned int method : 8;
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unsigned int http_errno : 7;
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unsigned int upgrade : 1;
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void *data;
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};
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struct http_parser_settings {
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http_cb on_message_begin;
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http_data_cb on_url;
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http_data_cb on_status;
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http_data_cb on_header_field;
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http_data_cb on_header_value;
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http_cb on_headers_complete;
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http_data_cb on_body;
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http_cb on_message_complete;
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http_cb on_chunk_header;
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http_cb on_chunk_complete;
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};
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enum http_parser_url_fields {
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UF_SCHEMA = 0,
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UF_HOST = 1,
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UF_PORT = 2,
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UF_PATH = 3,
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UF_QUERY = 4,
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UF_FRAGMENT = 5,
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UF_USERINFO = 6,
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UF_MAX = 7
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};
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struct http_parser_url {
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uint16_t field_set;
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uint16_t port;
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struct {
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uint16_t off;
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uint16_t len;
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} field_data[UF_MAX];
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};
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unsigned long http_parser_version(void);
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void http_parser_init(http_parser *parser, enum http_parser_type type);
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void http_parser_settings_init(http_parser_settings *settings);
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size_t http_parser_execute(http_parser *parser,
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const http_parser_settings *settings,
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const char *data, size_t len);
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int http_should_keep_alive(const http_parser *parser);
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const char *http_method_str(enum http_method m);
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const char *http_status_str(enum http_status s);
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const char *http_errno_name(enum http_errno err);
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const char *http_errno_description(enum http_errno err);
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void http_parser_url_init(struct http_parser_url *u);
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int http_parser_parse_url(const char *buf, size_t buflen, int is_connect,
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struct http_parser_url *u);
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void http_parser_pause(http_parser *parser, int paused);
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int http_body_is_final(const http_parser *parser);
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void http_parser_set_max_header_size(uint32_t size);
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#ifdef __cplusplus
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}
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#endif
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#endif
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