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-- Copyright 2008 Steven Barth <steven@midlink.org>
-- Licensed to the public under the Apache License 2.0.
local ltn12 = require "luci.ltn12"
local protocol = require "luci.http.protocol"
local util = require "luci.util"
local string = require "string"
local coroutine = require "coroutine"
local table = require "table"
local ipairs, pairs, next, type, tostring, error =
ipairs, pairs, next, type, tostring, error
module "luci.http"
context = util.threadlocal()
Request = util.class()
function Request.__init__(self, env, sourcein, sinkerr)
self.input = sourcein
self.error = sinkerr
-- File handler nil by default to let .content() work
self.filehandler = nil
-- HTTP-Message table
self.message = {
env = env,
headers = {},
params = protocol.urldecode_params(env.QUERY_STRING or ""),
}
self.parsed_input = false
end
function Request.formvalue(self, name, noparse)
if not noparse and not self.parsed_input then
self:_parse_input()
end
if name then
return self.message.params[name]
else
return self.message.params
end
end
function Request.formvaluetable(self, prefix)
local vals = {}
prefix = prefix and prefix .. "." or "."
if not self.parsed_input then
self:_parse_input()
end
local void = self.message.params[nil]
for k, v in pairs(self.message.params) do
if k:find(prefix, 1, true) == 1 then
vals[k:sub(#prefix + 1)] = tostring(v)
end
end
return vals
end
function Request.content(self)
if not self.parsed_input then
self:_parse_input()
end
return self.message.content, self.message.content_length
end
function Request.getcookie(self, name)
local c = string.gsub(";" .. (self:getenv("HTTP_COOKIE") or "") .. ";", "%s*;%s*", ";")
local p = ";" .. name .. "=(.-);"
local i, j, value = c:find(p)
return value and urldecode(value)
end
function Request.getenv(self, name)
if name then
return self.message.env[name]
else
return self.message.env
end
end
function Request.setfilehandler(self, callback)
self.filehandler = callback
end
function Request._parse_input(self)
protocol.parse_message_body(
self.input,
self.message,
self.filehandler
)
self.parsed_input = true
end
function close()
if not context.eoh then
context.eoh = true
coroutine.yield(3)
end
if not context.closed then
context.closed = true
coroutine.yield(5)
end
end
function content()
return context.request:content()
end
function formvalue(name, noparse)
return context.request:formvalue(name, noparse)
end
function formvaluetable(prefix)
return context.request:formvaluetable(prefix)
end
function getcookie(name)
return context.request:getcookie(name)
end
-- or the environment table itself.
function getenv(name)
return context.request:getenv(name)
end
function setfilehandler(callback)
return context.request:setfilehandler(callback)
end
function header(key, value)
if not context.headers then
context.headers = {}
end
context.headers[key:lower()] = value
coroutine.yield(2, key, value)
end
function prepare_content(mime)
if not context.headers or not context.headers["content-type"] then
if mime == "application/xhtml+xml" then
if not getenv("HTTP_ACCEPT") or
not getenv("HTTP_ACCEPT"):find("application/xhtml+xml", nil, true) then
mime = "text/html; charset=UTF-8"
end
header("Vary", "Accept")
end
header("Content-Type", mime)
end
end
function source()
return context.request.input
end
function status(code, message)
code = code or 200
message = message or "OK"
context.status = code
coroutine.yield(1, code, message)
end
-- This function is as a valid LTN12 sink.
-- If the content chunk is nil this function will automatically invoke close.
function write(content, src_err)
if not content then
if src_err then
error(src_err)
else
close()
end
return true
elseif #content == 0 then
return true
else
if not context.eoh then
if not context.status then
status()
end
if not context.headers or not context.headers["content-type"] then
header("Content-Type", "text/html; charset=utf-8")
end
if not context.headers["cache-control"] then
header("Cache-Control", "no-cache")
header("Expires", "0")
end
context.eoh = true
coroutine.yield(3)
end
coroutine.yield(4, content)
return true
end
end
function splice(fd, size)
coroutine.yield(6, fd, size)
end
function redirect(url)
if url == "" then url = "/" end
status(302, "Found")
header("Location", url)
close()
end
function build_querystring(q)
local s = { "?" }
for k, v in pairs(q) do
if #s > 1 then s[#s+1] = "&" end
s[#s+1] = urldecode(k)
s[#s+1] = "="
s[#s+1] = urldecode(v)
end
return table.concat(s, "")
end
urldecode = protocol.urldecode
urlencode = protocol.urlencode
function write_json(x)
util.serialize_json(x, write)
end
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