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.
10 local socket = require "socket"
11 local server = require "net.server"
12 local url_parse = require "socket.url".parse;
13 local httpstream_new = require "util.httpstream".new;
15 local connlisteners_start = require "net.connlisteners".start;
16 local connlisteners_get = require "net.connlisteners".get;
19 local t_insert, t_concat = table.insert, table.concat;
20 local s_match, s_gmatch = string.match, string.gmatch;
21 local tonumber, tostring, pairs, ipairs, type = tonumber, tostring, pairs, ipairs, type;
23 local urlencode = function (s) return s and (s:gsub("%W", function (c) return ("%%%02x"):format(c:byte()); end)); end
25 local log = require "util.logger".init("httpserver");
27 local http_servers = {};
31 local default_handler;
33 local function expectbody(reqt)
34 return reqt.method == "POST";
37 local function send_response(request, response)
40 if response.body or response.headers then
41 local body = response.body and tostring(response.body);
42 log("debug", "Sending response to %s", request.id);
43 resp = { "HTTP/1.0 "..(response.status or "200 OK").."\r\n" };
44 local h = response.headers;
46 for k, v in pairs(h) do
47 t_insert(resp, k..": "..v.."\r\n");
50 if body and not (h and h["Content-Length"]) then
51 t_insert(resp, "Content-Length: "..#body.."\r\n");
53 t_insert(resp, "\r\n");
55 if body and request.method ~= "HEAD" then
58 request.write(t_concat(resp));
60 -- Response we have is just a string (the body)
61 log("debug", "Sending 200 response to %s", request.id or "<none>");
63 local resp = "HTTP/1.0 200 OK\r\n"
64 .. "Connection: close\r\n"
65 .. "Content-Type: text/html\r\n"
66 .. "Content-Length: "..#response.."\r\n"
72 if not request.stayopen then
77 local function call_callback(request, err)
78 if request.handled then return; end
79 request.handled = true;
80 local callback = request.callback;
81 if not callback and request.path then
82 local path = request.url.path;
83 local base = path:match("^/([^/?]+)");
85 base = path:match("^http://[^/?]+/([^/?]+)");
88 callback = (request.server and request.server.handlers[base]) or default_handler;
92 log("debug", "Request error: "..err);
93 if not callback(nil, err, request) then
94 destroy_request(request);
99 local response = callback(request.method, request.body and t_concat(request.body), request);
101 if response == true and not request.destroyed then
102 -- Keep connection open, we will reply later
103 log("debug", "Request %s left open, on_destroy is %s", request.id, tostring(request.on_destroy));
104 elseif response ~= true then
106 send_response(request, response);
107 destroy_request(request);
110 log("debug", "Request handler provided no response, destroying request...");
111 -- No response, close connection
112 destroy_request(request);
117 local function request_reader(request, data, startpos)
118 if not request.parser then
119 local function success_cb(r)
120 for k,v in pairs(r) do request[k] = v; end
121 request.url = url_parse(request.path);
122 request.url.path = request.url.path and request.url.path:gsub("%%(%x%x)", function(x) return x.char(tonumber(x, 16)) end);
123 request.body = { request.body };
124 call_callback(request);
126 local function error_cb(r)
127 call_callback(request, r or "connection-closed");
128 destroy_request(request);
130 request.parser = httpstream_new(success_cb, error_cb);
132 request.parser:feed(data);
135 -- The default handler for requests
136 default_handler = function (method, body, request)
137 log("debug", method.." request for "..tostring(request.path) .. " on port "..request.handler:serverport());
138 return { status = "404 Not Found",
139 headers = { ["Content-Type"] = "text/html" },
140 body = "<html><head><title>Page Not Found</title></head><body>Not here :(</body></html>" };
144 function new_request(handler)
145 return { handler = handler, conn = handler,
146 write = function (...) return handler:write(...); end, state = "request",
147 server = http_servers[handler:serverport()],
148 send = send_response,
149 destroy = destroy_request,
150 id = tostring{}:match("%x+$")
154 function destroy_request(request)
155 log("debug", "Destroying request %s", request.id);
156 listener = listener or connlisteners_get("httpserver");
157 if not request.destroyed then
158 request.destroyed = true;
159 if request.on_destroy then
160 log("debug", "Request has destroy callback");
161 request.on_destroy(request);
163 log("debug", "Request has no destroy callback");
165 request.handler:close()
167 listener.ondisconnect(request.conn, "closed");
173 local http_server = http_servers[params.port];
174 if not http_server then
175 http_server = { handlers = {} };
176 http_servers[params.port] = http_server;
177 -- We weren't already listening on this port, so start now
178 connlisteners_start("httpserver", params);
181 http_server.handlers[params.base] = params.handler;
185 function set_default_handler(handler)
186 default_handler = handler;
189 function new_from_config(ports, handle_request, default_options)
190 if type(handle_request) == "string" then -- COMPAT with old plugins
191 log("warn", "Old syntax of httpserver.new_from_config being used to register %s", handle_request);
192 handle_request, default_options = default_options, { base = handle_request };
194 ports = ports or {5280};
195 for _, options in ipairs(ports) do
196 local port = default_options.port or 5280;
197 local base = default_options.base;
198 local ssl = default_options.ssl or false;
199 local interface = default_options.interface;
200 if type(options) == "number" then
202 elseif type(options) == "table" then
203 port = options.port or port;
204 base = options.path or base;
205 ssl = options.ssl or ssl;
206 interface = options.interface or interface;
207 elseif type(options) == "string" then
213 ssl.protocol = "sslv23";
214 ssl.options = "no_sslv2";
217 new{ port = port, interface = interface,
218 base = base, handler = handle_request,
219 ssl = ssl, type = (ssl and "ssl") or "tcp" };
223 _M.request_reader = request_reader;
224 _M.send_response = send_response;
225 _M.urlencode = urlencode;