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--
-- This file is part of LEM, a Lua Event Machine.
-- Copyright 2011-2013 Emil Renner Berthing
-- Copyright 2013 Halfdan Mouritzen
--
-- LEM 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 3 of
-- the License, or (at your option) any later version.
--
-- LEM 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 LEM. If not, see <http://www.gnu.org/licenses/>.
--
local setmetatable = setmetatable
local tostring = tostring
local tonumber = tonumber
local pairs = pairs
local type = type
local date = os.date
local format = string.format
local concat = table.concat
local remove = table.remove
local M = {}
local status_string = {
-- 1xx Informational
[100] = '100 Continue',
[101] = '101 Switching Protocols',
[102] = '102 Processing', -- WebDAV
-- 2xx Success
[200] = '200 OK',
[201] = '201 Created',
[202] = '202 Accepted',
[203] = '203 Non-Authoritative Information',
[204] = '204 No Content',
[205] = '205 Reset Content',
[206] = '206 Partial Content',
[207] = '207 Multi-Status', -- WebDAV
[208] = '208 Already Reported', -- WebDAV
[226] = '226 IM Used',
[230] = '230 Authentication Successfull',
-- 3xx Redirection
[300] = '300 Multiple Choices',
[301] = '301 Moved Permanently',
[302] = '302 Found',
[303] = '303 See Other',
[304] = '304 Not Modified',
[305] = '305 Use Proxy',
[306] = '306 Switch Proxy',
[307] = '307 Temporary Redirect',
[308] = '308 Permanent Redirect',
-- 4xx Client Error
[400] = '400 Bad Request',
[401] = '401 Unauthorized',
[402] = '402 Payment Required',
[403] = '403 Forbidden',
[404] = '404 Not Found',
[405] = '405 Method Not Allowed',
[406] = '406 Not Acceptable',
[407] = '407 Proxy Authentication Required',
[408] = '408 Request Timeout',
[409] = '409 Conflict',
[410] = '410 Gone',
[411] = '411 Length Required',
[412] = '412 Precondition Failed',
[413] = '413 Request Entity Too Large',
[414] = '414 Request-URI Too Long',
[415] = '415 Unsupported Media Type',
[416] = '416 Requested Range Not Satisfiable',
[417] = '417 Expectation Failed',
-- ...
[422] = '422 Unprocessable Entity', -- WebDAV
[423] = '423 Locked', -- WebDAV
[424] = '424 Failed Dependency', -- WebDAV
-- ...
[426] = '426 Upgrade Required',
[428] = '428 Precondition Required',
[429] = '429 Too Many Requests',
[431] = '431 Request Header Fields Too Large',
-- 5xx Server Error
[500] = '500 Internal Server Error',
[501] = '501 Not Implemented',
[502] = '502 Bad Gateway',
[503] = '503 Service Unavailable',
[504] = '504 Gateway Timeout',
[505] = '505 HTTP Version Not Supported',
[506] = '506 Variant Also Negotiates',
[507] = '507 Insufficient Storage', -- WebDAV
[508] = '508 Loop Detected', -- WebDAV
-- ...
[510] = '510 Not Extended',
[511] = '511 Network Authentication Required',
[531] = '531 Access Denied',
}
M.status_string = status_string
function M.not_found(req, res)
if req.headers['expect'] ~= '100-continue' then
req:body()
end
res.status = 404
res.headers['Content-Type'] = 'text/html; charset=UTF-8'
res:add([[
<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>Not Found</title>
</head>
<body>
<h1>Not found</h1>
</body>
</html>
]])
end
function M.htmlerror(num, text)
local str = format([[
<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>%s</title>
</head>
<body>
<h1>%s</h1>
</body>
</html>
]], text, text)
return function(req, res)
res.status = num
res.headers['Content-Type'] = 'text/html; charset=UTF-8'
res.headers['Connection'] = 'close'
res:add(str)
end
end
M.method_not_allowed = M.htmlerror(405, 'Method Not Allowed')
M.expectation_failed = M.htmlerror(417, 'Expectation Failed')
M.version_not_supported = M.htmlerror(505, 'HTTP Version Not Supported')
M.bad_request = M.htmlerror(400, 'Bad Request')
local Response = {}
Response.__index = Response
M.Response = Response
function Response:contentlength()
local len = 0
for i = 1, #self do
len = len + #self[i]
end
return len
end
function Response:appendheader(rope, i, size)
if not size then size = 0 end
local line
for k, v in pairs(self.headers) do
line = format('%s: %s\r\n', k, tostring(v))
i = i + 1
rope[i] = line
size = size + #line
end
i = i + 1
rope[i] = '\r\n'
size = size + 2
return i, size
end
function Response:appendbody(rope, i, size)
if not size then size = 0 end
local chunk
for j = 1, #self do
chunk = self[j]
i = i + 1
rope[i] = chunk
size = size + #chunk
end
return i, size
end
function M.new(req)
local n = 0
return setmetatable({
headers = {},
version = req and req.version or nil,
add = function(self, fmt, first, ...)
n = n + 1
if first then
self[n] = format(fmt, first, ...)
else
self[n] = fmt
end
end
}, Response)
end
return M
-- vim: ts=2 sw=2 noet:
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