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 "util.httpstream".new;
14 local server = require "net.server"
16 local t_insert, t_concat = table.insert, table.concat;
17 local pairs, ipairs = pairs, ipairs;
18 local tonumber, tostring, xpcall, select, debug_traceback, char, format =
19 tonumber, tostring, xpcall, select, debug.traceback, string.char, string.format;
21 local log = require "util.logger".init("http");
25 local requests = {}; -- Open requests
27 local listener = { default_port = 80, default_mode = "*a" };
29 function listener.onconnect(conn)
30 local req = requests[conn];
32 local request_line = { req.method or "GET", " ", req.path, " HTTP/1.1\r\n" };
34 t_insert(request_line, 4, "?"..req.query);
37 conn:write(t_concat(request_line));
38 local t = { [2] = ": ", [4] = "\r\n" };
39 for k, v in pairs(req.headers) do
41 conn:write(t_concat(t));
50 function listener.onincoming(conn, data)
51 local request = requests[conn];
54 log("warn", "Received response from connection %s with no request attached!", tostring(conn));
58 if data and request.reader then
63 function listener.ondisconnect(conn, err)
64 local request = requests[conn];
65 if request and request.conn then
71 function urlencode(s) return s and (s:gsub("[^a-zA-Z0-9.~_-]", function (c) return format("%%%02x", c:byte()); end)); end
72 function urldecode(s) return s and (s:gsub("%%(%x%x)", function (c) return char(tonumber(c,16)); end)); end
74 local function _formencodepart(s)
75 return s and (s:gsub("%W", function (c)
77 return format("%%%02x", c:byte());
84 function formencode(form)
86 if form[1] then -- Array of ordered { name, value }
87 for _, field in ipairs(form) do
88 t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value));
90 else -- Unordered map of name -> value
91 for name, value in pairs(form) do
92 t_insert(result, _formencodepart(name).."=".._formencodepart(value));
95 return t_concat(result, "&");
98 function formdecode(s)
99 if not s:match("=") then return urldecode(s); end
101 for k, v in s:gmatch("([^=&]*)=([^&]*)") do
102 k, v = k:gsub("%+", "%%20"), v:gsub("%+", "%%20");
103 k, v = urldecode(k), urldecode(v);
104 t_insert(r, { name = k, value = v });
110 local function request_reader(request, data, startpos)
111 if not request.parser then
112 if not data then return; end
113 local function success_cb(r)
114 if request.callback then
115 for k,v in pairs(r) do request[k] = v; end
116 request.callback(r.body, r.code, request, r);
117 request.callback = nil;
119 destroy_request(request);
121 local function error_cb(r)
122 if request.callback then
123 request.callback(r or "connection-closed", 0, request);
124 request.callback = nil;
126 destroy_request(request);
128 local function options_cb()
131 request.parser = httpstream_new(success_cb, error_cb, "client", options_cb);
133 request.parser:feed(data);
136 local function handleerr(err) log("error", "Traceback[http]: %s: %s", tostring(err), debug_traceback()); end
137 function request(u, ex, callback)
138 local req = url.parse(u);
140 if not (req and req.host) then
141 callback(nil, 0, req);
142 return nil, "invalid-url";
149 local method, headers, body;
153 ["User-Agent"] = "Prosody XMPP Server";
157 headers["Authorization"] = "Basic "..b64(req.userinfo);
161 req.onlystatus = ex.onlystatus;
165 headers["Content-Length"] = tostring(#body);
166 headers["Content-Type"] = "application/x-www-form-urlencoded";
168 if ex.method then method = ex.method; end
170 for k, v in pairs(ex.headers) do
176 -- Attach to request object
177 req.method, req.headers, req.body = method, headers, body;
179 local using_https = req.scheme == "https";
180 local port = tonumber(req.port) or (using_https and 443 or 80);
182 -- Connect the socket, and wrap it with net.server
183 local conn = socket.tcp();
185 local ok, err = conn:connect(req.host, port);
186 if not ok and err ~= "timeout" then
187 callback(nil, 0, req);
191 req.handler, req.conn = server.wrapclient(conn, req.host, port, listener, "*a", using_https and { mode = "client", protocol = "sslv23" });
192 req.write = function (...) return req.handler:write(...); end
194 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
195 req.reader = request_reader;
196 req.state = "status";
198 requests[req.handler] = req;
202 function destroy_request(request)
205 request.handler:close()
209 _M.urlencode = urlencode;