2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
9 local socket = require "socket"
10 local b64 = require "util.encodings".base64.encode;
11 local url = require "socket.url"
12 local httpstream_new = require "net.http.parser".new;
13 local util_http = require "util.http";
15 local ssl_available = pcall(require, "ssl");
17 local server = require "net.server"
19 local t_insert, t_concat = table.insert, table.concat;
21 local tonumber, tostring, xpcall, select, traceback =
22 tonumber, tostring, xpcall, select, debug.traceback;
23 local assert, error = assert, error
25 local log = require "util.logger".init("http");
29 local requests = {}; -- Open requests
31 local listener = { default_port = 80, default_mode = "*a" };
33 function listener.onconnect(conn)
34 local req = requests[conn];
36 local request_line = { req.method or "GET", " ", req.path, " HTTP/1.1\r\n" };
38 t_insert(request_line, 4, "?"..req.query);
41 conn:write(t_concat(request_line));
42 local t = { [2] = ": ", [4] = "\r\n" };
43 for k, v in pairs(req.headers) do
45 conn:write(t_concat(t));
54 function listener.onincoming(conn, data)
55 local request = requests[conn];
58 log("warn", "Received response from connection %s with no request attached!", tostring(conn));
62 if data and request.reader then
67 function listener.ondisconnect(conn, err)
68 local request = requests[conn];
69 if request and request.conn then
70 request:reader(nil, err);
75 local function request_reader(request, data, err)
76 if not request.parser then
77 local function error_cb(reason)
78 if request.callback then
79 request.callback(reason or "connection-closed", 0, request);
80 request.callback = nil;
82 destroy_request(request);
90 local function success_cb(r)
91 if request.callback then
92 request.callback(r.body, r.code, r, request);
93 request.callback = nil;
95 destroy_request(request);
97 local function options_cb()
100 request.parser = httpstream_new(success_cb, error_cb, "client", options_cb);
102 request.parser:feed(data);
105 local function handleerr(err) log("error", "Traceback[http]: %s", traceback(tostring(err), 2)); end
106 function request(u, ex, callback)
107 local req = url.parse(u);
109 if not (req and req.host) then
110 callback(nil, 0, req);
111 return nil, "invalid-url";
118 local method, headers, body;
120 local host, port = req.host, req.port;
121 local host_header = host;
122 if (port == "80" and req.scheme == "http")
123 or (port == "443" and req.scheme == "https") then
126 host_header = host_header..":"..port;
130 ["Host"] = host_header;
131 ["User-Agent"] = "Prosody XMPP Server";
135 headers["Authorization"] = "Basic "..b64(req.userinfo);
139 req.onlystatus = ex.onlystatus;
143 headers["Content-Length"] = tostring(#body);
144 headers["Content-Type"] = "application/x-www-form-urlencoded";
146 if ex.method then method = ex.method; end
148 for k, v in pairs(ex.headers) do
154 -- Attach to request object
155 req.method, req.headers, req.body = method, headers, body;
157 local using_https = req.scheme == "https";
158 if using_https and not ssl_available then
159 error("SSL not available, unable to contact https URL");
161 local port_number = port and tonumber(port) or (using_https and 443 or 80);
163 -- Connect the socket, and wrap it with net.server
164 local conn = socket.tcp();
166 local ok, err = conn:connect(host, port_number);
167 if not ok and err ~= "timeout" then
168 callback(nil, 0, req);
172 local sslctx = false;
174 sslctx = ex and ex.sslctx or { mode = "client", protocol = "sslv23", options = { "no_sslv2" } };
177 req.handler, req.conn = assert(server.wrapclient(conn, host, port_number, listener, "*a", sslctx));
178 req.write = function (...) return req.handler:write(...); end
180 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
181 req.reader = request_reader;
182 req.state = "status";
184 requests[req.handler] = req;
188 function destroy_request(request)
191 request.handler:close()
195 local urlencode, urldecode = util_http.urlencode, util_http.urldecode;
196 local formencode, formdecode = util_http.formencode, util_http.formdecode;
198 _M.urlencode, _M.urldecode = urlencode, urldecode;
199 _M.formencode, _M.formdecode = formencode, formdecode;