Software /
code /
prosody
File
net/http.lua @ 4589:8553d822f417
mod_s2s: streamopened(): Tighter validation around stream 'to' and 'from' attributes, and only set to_host and from_host if they aren't set already and if the session hasn't already been authenticated
author | Matthew Wild <mwild1@gmail.com> |
---|---|
date | Mon, 05 Mar 2012 11:07:10 +0000 |
parent | 4557:2abe4e541d52 |
child | 4865:9171dc2357e0 |
line wrap: on
line source
-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local socket = require "socket" local mime = require "mime" local url = require "socket.url" local httpstream_new = require "util.httpstream".new; local server = require "net.server" local t_insert, t_concat = table.insert, table.concat; local pairs, ipairs = pairs, ipairs; local tonumber, tostring, xpcall, select, debug_traceback, char, format = tonumber, tostring, xpcall, select, debug.traceback, string.char, string.format; local log = require "util.logger".init("http"); module "http" local requests = {}; -- Open requests local listener = { default_port = 80, default_mode = "*a" }; function listener.onconnect(conn) local req = requests[conn]; -- Send the request local request_line = { req.method or "GET", " ", req.path, " HTTP/1.1\r\n" }; if req.query then t_insert(request_line, 4, "?"..req.query); end conn:write(t_concat(request_line)); local t = { [2] = ": ", [4] = "\r\n" }; for k, v in pairs(req.headers) do t[1], t[3] = k, v; conn:write(t_concat(t)); end conn:write("\r\n"); if req.body then conn:write(req.body); end end function listener.onincoming(conn, data) local request = requests[conn]; if not request then log("warn", "Received response from connection %s with no request attached!", tostring(conn)); return; end if data and request.reader then request:reader(data); end end function listener.ondisconnect(conn, err) local request = requests[conn]; if request and request.conn then request:reader(nil); end requests[conn] = nil; end function urlencode(s) return s and (s:gsub("%W", function (c) return format("%%%02x", c:byte()); end)); end function urldecode(s) return s and (s:gsub("%%(%x%x)", function (c) return char(tonumber(c,16)); end)); end local function _formencodepart(s) return s and (s:gsub("%W", function (c) if c ~= " " then return format("%%%02x", c:byte()); else return "+"; end end)); end function formencode(form) local result = {}; if form[1] then -- Array of ordered { name, value } for _, field in ipairs(form) do t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value)); end else -- Unordered map of name -> value for name, value in pairs(form) do t_insert(result, _formencodepart(name).."=".._formencodepart(value)); end end return t_concat(result, "&"); end function formdecode(s) if not s:match("=") then return urldecode(s); end local r = {}; for k, v in s:gmatch("([^=&]*)=([^&]*)") do k, v = k:gsub("%+", "%%20"), v:gsub("%+", "%%20"); k, v = urldecode(k), urldecode(v); t_insert(r, { name = k, value = v }); r[k] = v; end return r; end local function request_reader(request, data, startpos) if not request.parser then if not data then return; end local function success_cb(r) if request.callback then for k,v in pairs(r) do request[k] = v; end request.callback(r.body, r.code, request, r); request.callback = nil; end destroy_request(request); end local function error_cb(r) if request.callback then request.callback(r or "connection-closed", 0, request); request.callback = nil; end destroy_request(request); end local function options_cb() return request; end request.parser = httpstream_new(success_cb, error_cb, "client", options_cb); end request.parser:feed(data); end local function handleerr(err) log("error", "Traceback[http]: %s: %s", tostring(err), debug_traceback()); end function request(u, ex, callback) local req = url.parse(u); if not (req and req.host) then callback(nil, 0, req); return nil, "invalid-url"; end if not req.path then req.path = "/"; end local method, headers, body; headers = { ["Host"] = req.host; ["User-Agent"] = "Prosody XMPP Server"; }; if req.userinfo then headers["Authorization"] = "Basic "..mime.b64(req.userinfo); end if ex then req.onlystatus = ex.onlystatus; body = ex.body; if body then method = "POST"; headers["Content-Length"] = tostring(#body); headers["Content-Type"] = "application/x-www-form-urlencoded"; end if ex.method then method = ex.method; end if ex.headers then for k, v in pairs(ex.headers) do headers[k] = v; end end end -- Attach to request object req.method, req.headers, req.body = method, headers, body; local using_https = req.scheme == "https"; local port = tonumber(req.port) or (using_https and 443 or 80); -- Connect the socket, and wrap it with net.server local conn = socket.tcp(); conn:settimeout(10); local ok, err = conn:connect(req.host, port); if not ok and err ~= "timeout" then callback(nil, 0, req); return nil, err; end req.handler, req.conn = server.wrapclient(conn, req.host, port, listener, "*a", using_https and { mode = "client", protocol = "sslv23" }); req.write = function (...) return req.handler:write(...); end req.callback = function (content, code, request, response) log("debug", "Calling callback, status %s", code or "---"); return select(2, xpcall(function () return callback(content, code, request, response) end, handleerr)); end req.reader = request_reader; req.state = "status"; requests[req.handler] = req; return req; end function destroy_request(request) if request.conn then request.conn = nil; request.handler:close() listener.ondisconnect(request.handler, "closed"); end end _M.urlencode = urlencode; return _M;