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/*	$OpenBSD: http.h,v 1.3 2014/07/12 14:34:13 reyk Exp $	*/

/*
 * Copyright (c) 2012 - 2014 Reyk Floeter <reyk@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _RELAYD_HTTP_H
#define _RELAYD_HTTP_H

enum httpmethod {
	HTTP_METHOD_NONE	= 0,

	/* HTTP/1.1, RFC 2616 */
	HTTP_METHOD_GET,
	HTTP_METHOD_HEAD,
	HTTP_METHOD_POST,
	HTTP_METHOD_PUT,
	HTTP_METHOD_DELETE,
	HTTP_METHOD_OPTIONS,
	HTTP_METHOD_TRACE,
	HTTP_METHOD_CONNECT,

	/* WebDAV, RFC 4918 */
	HTTP_METHOD_PROPFIND,
	HTTP_METHOD_PROPPATCH,
	HTTP_METHOD_MKCOL,
	HTTP_METHOD_COPY,
	HTTP_METHOD_MOVE,
	HTTP_METHOD_LOCK,
	HTTP_METHOD_UNLOCK,

	/* PATCH, RFC 5789 */
	HTTP_METHOD_PATCH,

	/* Server response (internal value) */
	HTTP_METHOD_RESPONSE
};

struct http_method {
	enum httpmethod		 method_id;
	const char		*method_name;
};
#define HTTP_METHODS		{			\
	{ HTTP_METHOD_GET,		"GET" },	\
	{ HTTP_METHOD_HEAD,		"HEAD" },	\
	{ HTTP_METHOD_POST,		"POST" },	\
	{ HTTP_METHOD_PUT,		"PUT" },	\
	{ HTTP_METHOD_DELETE,		"DELETE" },	\
	{ HTTP_METHOD_OPTIONS,		"OPTIONS" },	\
	{ HTTP_METHOD_TRACE,		"TRACE" },	\
	{ HTTP_METHOD_CONNECT,		"CONNECT" },	\
	{ HTTP_METHOD_PROPFIND,		"PROPFIND" },	\
	{ HTTP_METHOD_PROPPATCH,	"PROPPATCH" },	\
	{ HTTP_METHOD_MKCOL,		"MKCOL" },	\
	{ HTTP_METHOD_COPY,		"COPY" },	\
	{ HTTP_METHOD_MOVE,		"MOVE" },	\
	{ HTTP_METHOD_LOCK,		"LOCK" },	\
	{ HTTP_METHOD_UNLOCK,		"UNLOCK" },	\
	{ HTTP_METHOD_PATCH,		"PATCH" },	\
	{ HTTP_METHOD_NONE,		NULL }		\
}

struct http_error {
	int			 error_code;
	const char		*error_name;
};
#define HTTP_ERRORS		{			\
	{ 100,	"Continue" },				\
	{ 101,	"Switching Protocols" },		\
	{ 200,	"OK" },					\
	{ 201,	"Created" },				\
	{ 202,	"Accepted" },				\
	{ 203,	"Non-Authorative Information" },	\
	{ 204,	"No Content" },				\
	{ 205,	"Reset Content" },			\
	{ 206,	"Partial Content" },			\
	{ 300,	"Multiple Choices" },			\
	{ 301,	"Moved Permanently" },			\
	{ 302,	"Moved Temporarily" },			\
	{ 303,	"See Other" },				\
	{ 304,	"Not Modified" },			\
	{ 307,	"Temporary Redirect" },			\
	{ 400,	"Bad Request" },			\
	{ 401,	"Unauthorized" },			\
	{ 402,	"Payment Required" },			\
	{ 403,	"Forbidden" },				\
	{ 404,	"Not Found" },				\
	{ 405,	"Method Not Allowed" },			\
	{ 406,	"Not Acceptable" },			\
	{ 407,	"Proxy Authentication Required" },	\
	{ 408,	"Request Timeout" },			\
	{ 409,	"Conflict" },				\
	{ 410,	"Gone" },				\
	{ 411,	"Length Required" },			\
	{ 412,	"Precondition Failed" },		\
	{ 413,	"Request Entity Too Large" },		\
	{ 414,	"Request-URL Too Long" },		\
	{ 415,	"Unsupported Media Type" },		\
	{ 416,	"Requested Range Not Satisfiable" },	\
	{ 417,	"Expectation Failed" },			\
	{ 500,	"Internal Server Error" },		\
	{ 501,	"Not Implemented" },			\
	{ 502,	"Bad Gateway" },			\
	{ 503,	"Service Unavailable" },		\
	{ 504,	"Gateway Timeout" },			\
	{ 505,	"HTTP Version Not Supported" },		\
	{ 0,	NULL }					\
}

/* Used during runtime */
struct http_descriptor {
	struct kv		 http_pathquery;
	struct kv		 http_matchquery;
#define http_path		 http_pathquery.kv_key
#define http_query		 http_pathquery.kv_value
#define http_rescode		 http_pathquery.kv_key
#define http_resmesg		 http_pathquery.kv_value
#define query_key		 http_matchquery.kv_key
#define query_val		 http_matchquery.kv_value

	char			*http_version;
	enum httpmethod		 http_method;
	int			 http_chunked;

	/* A tree of headers and attached lists for repeated headers. */
	struct kvtree		 http_headers;
	struct kv		*http_lastheader;
};

#endif /* _RELAYD_HTTP_H */