Software /
code /
prosody
File
net/http.lua @ 4471:ea24d73e6c94
net.http: Pass response object to callbacks (feels hacky, should this be passed *instead of* the request?)
author | Matthew Wild <mwild1@gmail.com> |
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date | Tue, 17 Jan 2012 00:30:52 +0000 |
parent | 4369:3578ff5d3674 |
child | 4557:2abe4e541d52 |
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-- 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 connlisteners_get = require "net.connlisteners".get; local listener = connlisteners_get("httpclient") or error("No httpclient listener!"); 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" 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"; listener.register_request(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;