diff options
Diffstat (limited to 'signaling-server/node_modules/socket.io/lib')
24 files changed, 6092 insertions, 0 deletions
diff --git a/signaling-server/node_modules/socket.io/lib/logger.js b/signaling-server/node_modules/socket.io/lib/logger.js new file mode 100644 index 0000000..49d02c9 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/logger.js @@ -0,0 +1,97 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module dependencies. + */ + +var util = require('./util') + , toArray = util.toArray; + +/** + * Log levels. + */ + +var levels = [ + 'error' + , 'warn' + , 'info' + , 'debug' +]; + +/** + * Colors for log levels. + */ + +var colors = [ + 31 + , 33 + , 36 + , 90 +]; + +/** + * Pads the nice output to the longest log level. + */ + +function pad (str) { + var max = 0; + + for (var i = 0, l = levels.length; i < l; i++) + max = Math.max(max, levels[i].length); + + if (str.length < max) + return str + new Array(max - str.length + 1).join(' '); + + return str; +}; + +/** + * Logger (console). + * + * @api public + */ + +var Logger = module.exports = function (opts) { + opts = opts || {} + this.colors = false !== opts.colors; + this.level = 3; + this.enabled = true; +}; + +/** + * Log method. + * + * @api public + */ + +Logger.prototype.log = function (type) { + var index = levels.indexOf(type); + + if (index > this.level || !this.enabled) + return this; + + console.log.apply( + console + , [this.colors + ? ' \033[' + colors[index] + 'm' + pad(type) + ' -\033[39m' + : type + ':' + ].concat(toArray(arguments).slice(1)) + ); + + return this; +}; + +/** + * Generate methods. + */ + +levels.forEach(function (name) { + Logger.prototype[name] = function () { + this.log.apply(this, [name].concat(toArray(arguments))); + }; +}); diff --git a/signaling-server/node_modules/socket.io/lib/manager.js b/signaling-server/node_modules/socket.io/lib/manager.js new file mode 100644 index 0000000..17ed9e4 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/manager.js @@ -0,0 +1,1042 @@ +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module dependencies. + */ + +var fs = require('fs') + , url = require('url') + , tty = require('tty') + , crypto = require('crypto') + , util = require('./util') + , store = require('./store') + , client = require('socket.io-client') + , transports = require('./transports') + , Logger = require('./logger') + , Socket = require('./socket') + , MemoryStore = require('./stores/memory') + , SocketNamespace = require('./namespace') + , Static = require('./static') + , EventEmitter = process.EventEmitter; + +/** + * Export the constructor. + */ + +exports = module.exports = Manager; + +/** + * Default transports. + */ + +var defaultTransports = exports.defaultTransports = [ + 'websocket' + , 'htmlfile' + , 'xhr-polling' + , 'jsonp-polling' +]; + +/** + * Inherited defaults. + */ + +var parent = module.parent.exports + , protocol = parent.protocol + , jsonpolling_re = /^\d+$/; + +/** + * Manager constructor. + * + * @param {HTTPServer} server + * @param {Object} options, optional + * @api public + */ + +function Manager (server, options) { + this.server = server; + this.namespaces = {}; + this.sockets = this.of(''); + this.settings = { + origins: '*:*' + , log: true + , store: new MemoryStore + , logger: new Logger + , static: new Static(this) + , heartbeats: true + , resource: '/socket.io' + , transports: defaultTransports + , authorization: false + , blacklist: ['disconnect'] + , 'log level': 3 + , 'log colors': tty.isatty(process.stdout.fd) + , 'close timeout': 60 + , 'heartbeat interval': 25 + , 'heartbeat timeout': 60 + , 'polling duration': 20 + , 'flash policy server': true + , 'flash policy port': 10843 + , 'destroy upgrade': true + , 'destroy buffer size': 10E7 + , 'browser client': true + , 'browser client cache': true + , 'browser client minification': false + , 'browser client etag': false + , 'browser client expires': 315360000 + , 'browser client gzip': false + , 'browser client handler': false + , 'client store expiration': 15 + , 'match origin protocol': false + }; + + for (var i in options) { + if (options.hasOwnProperty(i)) { + this.settings[i] = options[i]; + } + } + + var self = this; + + // default error handler + server.on('error', function(err) { + self.log.warn('error raised: ' + err); + }); + + this.initStore(); + + this.on('set:store', function() { + self.initStore(); + }); + + // reset listeners + this.oldListeners = server.listeners('request').splice(0); + server.removeAllListeners('request'); + + server.on('request', function (req, res) { + self.handleRequest(req, res); + }); + + server.on('upgrade', function (req, socket, head) { + self.handleUpgrade(req, socket, head); + }); + + server.on('close', function () { + clearInterval(self.gc); + }); + + server.once('listening', function () { + self.gc = setInterval(self.garbageCollection.bind(self), 10000); + }); + + for (var i in transports) { + if (transports.hasOwnProperty(i)) { + if (transports[i].init) { + transports[i].init(this); + } + } + } + + // forward-compatibility with 1.0 + var self = this; + this.sockets.on('connection', function (conn) { + self.emit('connection', conn); + }); + + this.sequenceNumber = Date.now() | 0; + + this.log.info('socket.io started'); +}; + +Manager.prototype.__proto__ = EventEmitter.prototype + +/** + * Store accessor shortcut. + * + * @api public + */ + +Manager.prototype.__defineGetter__('store', function () { + var store = this.get('store'); + store.manager = this; + return store; +}); + +/** + * Logger accessor. + * + * @api public + */ + +Manager.prototype.__defineGetter__('log', function () { + var logger = this.get('logger'); + + logger.level = this.get('log level') || -1; + logger.colors = this.get('log colors'); + logger.enabled = this.enabled('log'); + + return logger; +}); + +/** + * Static accessor. + * + * @api public + */ + +Manager.prototype.__defineGetter__('static', function () { + return this.get('static'); +}); + +/** + * Get settings. + * + * @api public + */ + +Manager.prototype.get = function (key) { + return this.settings[key]; +}; + +/** + * Set settings + * + * @api public + */ + +Manager.prototype.set = function (key, value) { + if (arguments.length == 1) return this.get(key); + this.settings[key] = value; + this.emit('set:' + key, this.settings[key], key); + return this; +}; + +/** + * Enable a setting + * + * @api public + */ + +Manager.prototype.enable = function (key) { + this.settings[key] = true; + this.emit('set:' + key, this.settings[key], key); + return this; +}; + +/** + * Disable a setting + * + * @api public + */ + +Manager.prototype.disable = function (key) { + this.settings[key] = false; + this.emit('set:' + key, this.settings[key], key); + return this; +}; + +/** + * Checks if a setting is enabled + * + * @api public + */ + +Manager.prototype.enabled = function (key) { + return !!this.settings[key]; +}; + +/** + * Checks if a setting is disabled + * + * @api public + */ + +Manager.prototype.disabled = function (key) { + return !this.settings[key]; +}; + +/** + * Configure callbacks. + * + * @api public + */ + +Manager.prototype.configure = function (env, fn) { + if ('function' == typeof env) { + env.call(this); + } else if (env == (process.env.NODE_ENV || 'development')) { + fn.call(this); + } + + return this; +}; + +/** + * Initializes everything related to the message dispatcher. + * + * @api private + */ + +Manager.prototype.initStore = function () { + this.handshaken = {}; + this.connected = {}; + this.open = {}; + this.closed = {}; + this.rooms = {}; + this.roomClients = {}; + + var self = this; + + this.store.subscribe('handshake', function (id, data) { + self.onHandshake(id, data); + }); + + this.store.subscribe('connect', function (id) { + self.onConnect(id); + }); + + this.store.subscribe('open', function (id) { + self.onOpen(id); + }); + + this.store.subscribe('join', function (id, room) { + self.onJoin(id, room); + }); + + this.store.subscribe('leave', function (id, room) { + self.onLeave(id, room); + }); + + this.store.subscribe('close', function (id) { + self.onClose(id); + }); + + this.store.subscribe('dispatch', function (room, packet, volatile, exceptions) { + self.onDispatch(room, packet, volatile, exceptions); + }); + + this.store.subscribe('disconnect', function (id) { + self.onDisconnect(id); + }); + + // we need to do this in a pub/sub way since the client can POST the message + // over a different socket (ie: different Transport instance) + + //use persistent channel for these, don't add and remove 5 channels for every connection + //eg. for 10,000 concurrent users this creates 50,000 channels in redis, which kind of slows things down + //we only need 5 (extra) total channels at all times + this.store.subscribe('message-remote',function (id, packet) { + self.onClientMessage(id, packet); + }); + + this.store.subscribe('disconnect-remote', function (id, reason) { + self.onClientDisconnect(id, reason); + }); + + this.store.subscribe('dispatch-remote', function (id, packet, volatile) { + var transport = self.transports[id]; + if (transport) { + transport.onDispatch(packet, volatile); + } + + if (!volatile) { + self.onClientDispatch(id, packet); + } + }); + + this.store.subscribe('heartbeat-clear', function (id) { + var transport = self.transports[id]; + if (transport) { + transport.onHeartbeatClear(); + } + }); + + this.store.subscribe('disconnect-force', function (id) { + var transport = self.transports[id]; + if (transport) { + transport.onForcedDisconnect(); + } + }); +}; +/** + * Called when a client handshakes. + * + * @param text + */ + +Manager.prototype.onHandshake = function (id, data) { + this.handshaken[id] = data; +}; + +/** + * Called when a client connects (ie: transport first opens) + * + * @api private + */ + +Manager.prototype.onConnect = function (id) { + this.connected[id] = true; +}; + +/** + * Called when a client opens a request in a different node. + * + * @api private + */ + +Manager.prototype.onOpen = function (id) { + this.open[id] = true; + + if (this.closed[id]) { + var self = this; + + var transport = self.transports[id]; + if (self.closed[id] && self.closed[id].length && transport) { + + // if we have buffered messages that accumulate between calling + // onOpen an this async callback, send them if the transport is + // still open, otherwise leave them buffered + if (transport.open) { + transport.payload(self.closed[id]); + self.closed[id] = []; + } + } + } + + // clear the current transport + if (this.transports[id]) { + this.transports[id].discard(); + this.transports[id] = null; + } +}; + +/** + * Called when a message is sent to a namespace and/or room. + * + * @api private + */ + +Manager.prototype.onDispatch = function (room, packet, volatile, exceptions) { + if (this.rooms[room]) { + for (var i = 0, l = this.rooms[room].length; i < l; i++) { + var id = this.rooms[room][i]; + + if (!~exceptions.indexOf(id)) { + if (this.transports[id] && this.transports[id].open) { + this.transports[id].onDispatch(packet, volatile); + } else if (!volatile) { + this.onClientDispatch(id, packet); + } + } + } + } +}; + +/** + * Called when a client joins a nsp / room. + * + * @api private + */ + +Manager.prototype.onJoin = function (id, name) { + if (!this.roomClients[id]) { + this.roomClients[id] = {}; + } + + if (!this.rooms[name]) { + this.rooms[name] = []; + } + + if (!~this.rooms[name].indexOf(id)) { + this.rooms[name].push(id); + this.roomClients[id][name] = true; + } +}; + +/** + * Called when a client leaves a nsp / room. + * + * @param private + */ + +Manager.prototype.onLeave = function (id, room) { + if (this.rooms[room]) { + var index = this.rooms[room].indexOf(id); + + if (index >= 0) { + this.rooms[room].splice(index, 1); + } + + if (!this.rooms[room].length) { + delete this.rooms[room]; + } + + if (this.roomClients[id]) { + delete this.roomClients[id][room]; + } + } +}; + +/** + * Called when a client closes a request in different node. + * + * @api private + */ + +Manager.prototype.onClose = function (id) { + if (this.open[id]) { + delete this.open[id]; + } + + this.closed[id] = []; + + var self = this; +}; + +/** + * Dispatches a message for a closed client. + * + * @api private + */ + +Manager.prototype.onClientDispatch = function (id, packet) { + if (this.closed[id]) { + this.closed[id].push(packet); + } +}; + +/** + * Receives a message for a client. + * + * @api private + */ + +Manager.prototype.onClientMessage = function (id, packet) { + if (this.namespaces[packet.endpoint]) { + this.namespaces[packet.endpoint].handlePacket(id, packet); + } +}; + +/** + * Fired when a client disconnects (not triggered). + * + * @api private + */ + +Manager.prototype.onClientDisconnect = function (id, reason) { + for (var name in this.namespaces) { + if (this.namespaces.hasOwnProperty(name)) { + this.namespaces[name].handleDisconnect(id, reason, typeof this.roomClients[id] !== 'undefined' && + typeof this.roomClients[id][name] !== 'undefined'); + } + } + + this.onDisconnect(id); +}; + +/** + * Called when a client disconnects. + * + * @param text + */ + +Manager.prototype.onDisconnect = function (id) { + delete this.handshaken[id]; + + if (this.open[id]) { + delete this.open[id]; + } + + if (this.connected[id]) { + delete this.connected[id]; + } + + if (this.transports[id]) { + this.transports[id].discard(); + delete this.transports[id]; + } + + if (this.closed[id]) { + delete this.closed[id]; + } + + if (this.roomClients[id]) { + for (var room in this.roomClients[id]) { + if (this.roomClients[id].hasOwnProperty(room)) { + this.onLeave(id, room); + } + } + delete this.roomClients[id] + } + + this.store.destroyClient(id, this.get('client store expiration')); +}; + +/** + * Handles an HTTP request. + * + * @api private + */ + +Manager.prototype.handleRequest = function (req, res) { + var data = this.checkRequest(req); + + if (!data) { + for (var i = 0, l = this.oldListeners.length; i < l; i++) { + this.oldListeners[i].call(this.server, req, res); + } + + return; + } + + if (data.static || !data.transport && !data.protocol) { + if (data.static && this.enabled('browser client')) { + this.static.write(data.path, req, res); + } else { + res.writeHead(200); + res.end('Welcome to socket.io.'); + + this.log.info('unhandled socket.io url'); + } + + return; + } + + if (data.protocol != protocol) { + res.writeHead(500); + res.end('Protocol version not supported.'); + + this.log.info('client protocol version unsupported'); + } else { + if (data.id) { + this.handleHTTPRequest(data, req, res); + } else { + this.handleHandshake(data, req, res); + } + } +}; + +/** + * Handles an HTTP Upgrade. + * + * @api private + */ + +Manager.prototype.handleUpgrade = function (req, socket, head) { + var data = this.checkRequest(req) + , self = this; + + if (!data) { + if (this.enabled('destroy upgrade')) { + socket.end(); + this.log.debug('destroying non-socket.io upgrade'); + } + + return; + } + + req.head = head; + this.handleClient(data, req); + req.head = null; +}; + +/** + * Handles a normal handshaken HTTP request (eg: long-polling) + * + * @api private + */ + +Manager.prototype.handleHTTPRequest = function (data, req, res) { + req.res = res; + this.handleClient(data, req); +}; + +/** + * Intantiantes a new client. + * + * @api private + */ + +Manager.prototype.handleClient = function (data, req) { + var socket = req.socket + , store = this.store + , self = this; + + // handle sync disconnect xhrs + if (undefined != data.query.disconnect) { + if (this.transports[data.id] && this.transports[data.id].open) { + this.transports[data.id].onForcedDisconnect(); + } else { + this.store.publish('disconnect-force', data.id); + } + req.res.writeHead(200); + req.res.end(); + return; + } + + if (!~this.get('transports').indexOf(data.transport)) { + this.log.warn('unknown transport: "' + data.transport + '"'); + req.connection.end(); + return; + } + + var transport = new transports[data.transport](this, data, req) + , handshaken = this.handshaken[data.id]; + + if (transport.disconnected) { + // failed during transport setup + req.connection.end(); + return; + } + if (handshaken) { + if (transport.open) { + if (this.closed[data.id] && this.closed[data.id].length) { + transport.payload(this.closed[data.id]); + this.closed[data.id] = []; + } + + this.onOpen(data.id); + this.store.publish('open', data.id); + this.transports[data.id] = transport; + } + + if (!this.connected[data.id]) { + this.onConnect(data.id); + this.store.publish('connect', data.id); + + // flag as used + delete handshaken.issued; + this.onHandshake(data.id, handshaken); + this.store.publish('handshake', data.id, handshaken); + + // initialize the socket for all namespaces + for (var i in this.namespaces) { + if (this.namespaces.hasOwnProperty(i)) { + var socket = this.namespaces[i].socket(data.id, true); + + // echo back connect packet and fire connection event + if (i === '') { + this.namespaces[i].handlePacket(data.id, { type: 'connect' }); + } + } + } + } + } else { + if (transport.open) { + transport.error('client not handshaken', 'reconnect'); + } + + transport.discard(); + } +}; + +/** + * Generates a session id. + * + * @api private + */ + +Manager.prototype.generateId = function () { + var rand = new Buffer(15); // multiple of 3 for base64 + if (!rand.writeInt32BE) { + return Math.abs(Math.random() * Math.random() * Date.now() | 0).toString() + + Math.abs(Math.random() * Math.random() * Date.now() | 0).toString(); + } + this.sequenceNumber = (this.sequenceNumber + 1) | 0; + rand.writeInt32BE(this.sequenceNumber, 11); + if (crypto.randomBytes) { + crypto.randomBytes(12).copy(rand); + } else { + // not secure for node 0.4 + [0, 4, 8].forEach(function(i) { + rand.writeInt32BE(Math.random() * Math.pow(2, 32) | 0, i); + }); + } + return rand.toString('base64').replace(/\//g, '_').replace(/\+/g, '-'); +}; + +/** + * Handles a handshake request. + * + * @api private + */ + +Manager.prototype.handleHandshake = function (data, req, res) { + var self = this + , origin = req.headers.origin + , headers = { + 'Content-Type': 'text/plain' + }; + + function writeErr (status, message) { + if (data.query.jsonp && jsonpolling_re.test(data.query.jsonp)) { + res.writeHead(200, { 'Content-Type': 'application/javascript' }); + res.end('io.j[' + data.query.jsonp + '](new Error("' + message + '"));'); + } else { + res.writeHead(status, headers); + res.end(message); + } + }; + + function error (err) { + writeErr(500, 'handshake error'); + self.log.warn('handshake error ' + err); + }; + + if (!this.verifyOrigin(req)) { + writeErr(403, 'handshake bad origin'); + return; + } + + var handshakeData = this.handshakeData(data); + + if (origin) { + // https://developer.mozilla.org/En/HTTP_Access_Control + headers['Access-Control-Allow-Origin'] = origin; + headers['Access-Control-Allow-Credentials'] = 'true'; + } + + this.authorize(handshakeData, function (err, authorized, newData) { + if (err) return error(err); + + if (authorized) { + var id = self.generateId() + , hs = [ + id + , self.enabled('heartbeats') ? self.get('heartbeat timeout') || '' : '' + , self.get('close timeout') || '' + , self.transports(data).join(',') + ].join(':'); + + if (data.query.jsonp && jsonpolling_re.test(data.query.jsonp)) { + hs = 'io.j[' + data.query.jsonp + '](' + JSON.stringify(hs) + ');'; + res.writeHead(200, { 'Content-Type': 'application/javascript' }); + } else { + res.writeHead(200, headers); + } + + self.onHandshake(id, newData || handshakeData); + self.store.publish('handshake', id, newData || handshakeData); + + res.end(hs); + + self.log.info('handshake authorized', id); + } else { + writeErr(403, 'handshake unauthorized'); + self.log.info('handshake unauthorized'); + } + }) +}; + +/** + * Gets normalized handshake data + * + * @api private + */ + +Manager.prototype.handshakeData = function (data) { + var connection = data.request.connection + , connectionAddress + , date = new Date; + + if (connection.remoteAddress) { + connectionAddress = { + address: connection.remoteAddress + , port: connection.remotePort + }; + } else if (connection.socket && connection.socket.remoteAddress) { + connectionAddress = { + address: connection.socket.remoteAddress + , port: connection.socket.remotePort + }; + } + + return { + headers: data.headers + , address: connectionAddress + , time: date.toString() + , query: data.query + , url: data.request.url + , xdomain: !!data.request.headers.origin + , secure: data.request.connection.secure + , issued: +date + }; +}; + +/** + * Verifies the origin of a request. + * + * @api private + */ + +Manager.prototype.verifyOrigin = function (request) { + var origin = request.headers.origin || request.headers.referer + , origins = this.get('origins'); + + if (origin === 'null') origin = '*'; + + if (origins.indexOf('*:*') !== -1) { + return true; + } + + if (origin) { + try { + var parts = url.parse(origin); + parts.port = parts.port || 80; + var ok = + ~origins.indexOf(parts.hostname + ':' + parts.port) || + ~origins.indexOf(parts.hostname + ':*') || + ~origins.indexOf('*:' + parts.port); + if (!ok) this.log.warn('illegal origin: ' + origin); + return ok; + } catch (ex) { + this.log.warn('error parsing origin'); + } + } + else { + this.log.warn('origin missing from handshake, yet required by config'); + } + return false; +}; + +/** + * Handles an incoming packet. + * + * @api private + */ + +Manager.prototype.handlePacket = function (sessid, packet) { + this.of(packet.endpoint || '').handlePacket(sessid, packet); +}; + +/** + * Performs authentication. + * + * @param Object client request data + * @api private + */ + +Manager.prototype.authorize = function (data, fn) { + if (this.get('authorization')) { + var self = this; + + this.get('authorization').call(this, data, function (err, authorized) { + self.log.debug('client ' + authorized ? 'authorized' : 'unauthorized'); + fn(err, authorized); + }); + } else { + this.log.debug('client authorized'); + fn(null, true); + } + + return this; +}; + +/** + * Retrieves the transports adviced to the user. + * + * @api private + */ + +Manager.prototype.transports = function (data) { + var transp = this.get('transports') + , ret = []; + + for (var i = 0, l = transp.length; i < l; i++) { + var transport = transp[i]; + + if (transport) { + if (!transport.checkClient || transport.checkClient(data)) { + ret.push(transport); + } + } + } + + return ret; +}; + +/** + * Checks whether a request is a socket.io one. + * + * @return {Object} a client request data object or `false` + * @api private + */ + +var regexp = /^\/([^\/]+)\/?([^\/]+)?\/?([^\/]+)?\/?$/ + +Manager.prototype.checkRequest = function (req) { + var resource = this.get('resource'); + + var match; + if (typeof resource === 'string') { + match = req.url.substr(0, resource.length); + if (match !== resource) match = null; + } else { + match = resource.exec(req.url); + if (match) match = match[0]; + } + + if (match) { + var uri = url.parse(req.url.substr(match.length), true) + , path = uri.pathname || '' + , pieces = path.match(regexp); + + // client request data + var data = { + query: uri.query || {} + , headers: req.headers + , request: req + , path: path + }; + + if (pieces) { + data.protocol = Number(pieces[1]); + data.transport = pieces[2]; + data.id = pieces[3]; + data.static = !!this.static.has(path); + }; + + return data; + } + + return false; +}; + +/** + * Declares a socket namespace + * + * @api public + */ + +Manager.prototype.of = function (nsp) { + if (this.namespaces[nsp]) { + return this.namespaces[nsp]; + } + + return this.namespaces[nsp] = new SocketNamespace(this, nsp); +}; + +/** + * Perform garbage collection on long living objects and properties that cannot + * be removed automatically. + * + * @api private + */ + +Manager.prototype.garbageCollection = function () { + // clean up unused handshakes + var ids = Object.keys(this.handshaken) + , i = ids.length + , now = Date.now() + , handshake; + + while (i--) { + handshake = this.handshaken[ids[i]]; + + if ('issued' in handshake && (now - handshake.issued) >= 3E4) { + this.onDisconnect(ids[i]); + } + } +}; diff --git a/signaling-server/node_modules/socket.io/lib/namespace.js b/signaling-server/node_modules/socket.io/lib/namespace.js new file mode 100644 index 0000000..6e1e1c9 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/namespace.js @@ -0,0 +1,355 @@ +/** + * Module dependencies. + */ + +var Socket = require('./socket') + , EventEmitter = process.EventEmitter + , parser = require('./parser') + , util = require('./util'); + +/** + * Exports the constructor. + */ + +exports = module.exports = SocketNamespace; + +/** + * Constructor. + * + * @api public. + */ + +function SocketNamespace (mgr, name) { + this.manager = mgr; + this.name = name || ''; + this.sockets = {}; + this.auth = false; + this.setFlags(); +}; + +/** + * Inherits from EventEmitter. + */ + +SocketNamespace.prototype.__proto__ = EventEmitter.prototype; + +/** + * Copies emit since we override it. + * + * @api private + */ + +SocketNamespace.prototype.$emit = EventEmitter.prototype.emit; + +/** + * Retrieves all clients as Socket instances as an array. + * + * @api public + */ + +SocketNamespace.prototype.clients = function (room) { + var room = this.name + (room !== undefined ? + '/' + room : ''); + + if (!this.manager.rooms[room]) { + return []; + } + + return this.manager.rooms[room].map(function (id) { + return this.socket(id); + }, this); +}; + +/** + * Access logger interface. + * + * @api public + */ + +SocketNamespace.prototype.__defineGetter__('log', function () { + return this.manager.log; +}); + +/** + * Access store. + * + * @api public + */ + +SocketNamespace.prototype.__defineGetter__('store', function () { + return this.manager.store; +}); + +/** + * JSON message flag. + * + * @api public + */ + +SocketNamespace.prototype.__defineGetter__('json', function () { + this.flags.json = true; + return this; +}); + +/** + * Volatile message flag. + * + * @api public + */ + +SocketNamespace.prototype.__defineGetter__('volatile', function () { + this.flags.volatile = true; + return this; +}); + +/** + * Overrides the room to relay messages to (flag). + * + * @api public + */ + +SocketNamespace.prototype.in = SocketNamespace.prototype.to = function (room) { + this.flags.endpoint = this.name + (room ? '/' + room : ''); + return this; +}; + +/** + * Adds a session id we should prevent relaying messages to (flag). + * + * @api public + */ + +SocketNamespace.prototype.except = function (id) { + this.flags.exceptions.push(id); + return this; +}; + +/** + * Sets the default flags. + * + * @api private + */ + +SocketNamespace.prototype.setFlags = function () { + this.flags = { + endpoint: this.name + , exceptions: [] + }; + return this; +}; + +/** + * Sends out a packet. + * + * @api private + */ + +SocketNamespace.prototype.packet = function (packet) { + packet.endpoint = this.name; + + var store = this.store + , log = this.log + , volatile = this.flags.volatile + , exceptions = this.flags.exceptions + , packet = parser.encodePacket(packet); + + this.manager.onDispatch(this.flags.endpoint, packet, volatile, exceptions); + this.store.publish('dispatch', this.flags.endpoint, packet, volatile, exceptions); + + this.setFlags(); + + return this; +}; + +/** + * Sends to everyone. + * + * @api public + */ + +SocketNamespace.prototype.send = function (data) { + return this.packet({ + type: this.flags.json ? 'json' : 'message' + , data: data + }); +}; + +/** + * Emits to everyone (override). + * + * @api public + */ + +SocketNamespace.prototype.emit = function (name) { + if (name == 'newListener') { + return this.$emit.apply(this, arguments); + } + + return this.packet({ + type: 'event' + , name: name + , args: util.toArray(arguments).slice(1) + }); +}; + +/** + * Retrieves or creates a write-only socket for a client, unless specified. + * + * @param {Boolean} whether the socket will be readable when initialized + * @api public + */ + +SocketNamespace.prototype.socket = function (sid, readable) { + if (!this.sockets[sid]) { + this.sockets[sid] = new Socket(this.manager, sid, this, readable); + } + + return this.sockets[sid]; +}; + +/** + * Sets authorization for this namespace. + * + * @api public + */ + +SocketNamespace.prototype.authorization = function (fn) { + this.auth = fn; + return this; +}; + +/** + * Called when a socket disconnects entirely. + * + * @api private + */ + +SocketNamespace.prototype.handleDisconnect = function (sid, reason, raiseOnDisconnect) { + if (this.sockets[sid] && this.sockets[sid].readable) { + if (raiseOnDisconnect) this.sockets[sid].onDisconnect(reason); + delete this.sockets[sid]; + } +}; + +/** + * Performs authentication. + * + * @param Object client request data + * @api private + */ + +SocketNamespace.prototype.authorize = function (data, fn) { + if (this.auth) { + var self = this; + + this.auth.call(this, data, function (err, authorized) { + self.log.debug('client ' + + (authorized ? '' : 'un') + 'authorized for ' + self.name); + fn(err, authorized); + }); + } else { + this.log.debug('client authorized for ' + this.name); + fn(null, true); + } + + return this; +}; + +/** + * Handles a packet. + * + * @api private + */ + +SocketNamespace.prototype.handlePacket = function (sessid, packet) { + var socket = this.socket(sessid) + , dataAck = packet.ack == 'data' + , manager = this.manager + , self = this; + + function ack () { + self.log.debug('sending data ack packet'); + socket.packet({ + type: 'ack' + , args: util.toArray(arguments) + , ackId: packet.id + }); + }; + + function error (err) { + self.log.warn('handshake error ' + err + ' for ' + self.name); + socket.packet({ type: 'error', reason: err }); + }; + + function connect () { + self.manager.onJoin(sessid, self.name); + self.store.publish('join', sessid, self.name); + + // packet echo + socket.packet({ type: 'connect' }); + + // emit connection event + self.$emit('connection', socket); + }; + + switch (packet.type) { + case 'connect': + if (packet.endpoint == '') { + connect(); + } else { + var handshakeData = manager.handshaken[sessid]; + + this.authorize(handshakeData, function (err, authorized, newData) { + if (err) return error(err); + + if (authorized) { + manager.onHandshake(sessid, newData || handshakeData); + self.store.publish('handshake', sessid, newData || handshakeData); + connect(); + } else { + error('unauthorized'); + } + }); + } + break; + + case 'ack': + if (socket.acks[packet.ackId]) { + socket.acks[packet.ackId].apply(socket, packet.args); + } else { + this.log.info('unknown ack packet'); + } + break; + + case 'event': + // check if the emitted event is not blacklisted + if (-~manager.get('blacklist').indexOf(packet.name)) { + this.log.debug('ignoring blacklisted event `' + packet.name + '`'); + } else { + var params = [packet.name].concat(packet.args); + + if (dataAck) { + params.push(ack); + } + + socket.$emit.apply(socket, params); + } + break; + + case 'disconnect': + this.manager.onLeave(sessid, this.name); + this.store.publish('leave', sessid, this.name); + + socket.$emit('disconnect', packet.reason || 'packet'); + break; + + case 'json': + case 'message': + var params = ['message', packet.data]; + + if (dataAck) + params.push(ack); + + socket.$emit.apply(socket, params); + }; +}; diff --git a/signaling-server/node_modules/socket.io/lib/parser.js b/signaling-server/node_modules/socket.io/lib/parser.js new file mode 100644 index 0000000..d56b550 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/parser.js @@ -0,0 +1,249 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module dependencies. + */ + +/** + * Packet types. + */ + +var packets = exports.packets = { + 'disconnect': 0 + , 'connect': 1 + , 'heartbeat': 2 + , 'message': 3 + , 'json': 4 + , 'event': 5 + , 'ack': 6 + , 'error': 7 + , 'noop': 8 + } + , packetslist = Object.keys(packets); + +/** + * Errors reasons. + */ + +var reasons = exports.reasons = { + 'transport not supported': 0 + , 'client not handshaken': 1 + , 'unauthorized': 2 + } + , reasonslist = Object.keys(reasons); + +/** + * Errors advice. + */ + +var advice = exports.advice = { + 'reconnect': 0 + } + , advicelist = Object.keys(advice); + +/** + * Encodes a packet. + * + * @api private + */ + +exports.encodePacket = function (packet) { + var type = packets[packet.type] + , id = packet.id || '' + , endpoint = packet.endpoint || '' + , ack = packet.ack + , data = null; + + switch (packet.type) { + case 'message': + if (packet.data !== '') + data = packet.data; + break; + + case 'event': + var ev = { name: packet.name }; + + if (packet.args && packet.args.length) { + ev.args = packet.args; + } + + data = JSON.stringify(ev); + break; + + case 'json': + data = JSON.stringify(packet.data); + break; + + case 'ack': + data = packet.ackId + + (packet.args && packet.args.length + ? '+' + JSON.stringify(packet.args) : ''); + break; + + case 'connect': + if (packet.qs) + data = packet.qs; + break; + + case 'error': + var reason = packet.reason ? reasons[packet.reason] : '' + , adv = packet.advice ? advice[packet.advice] : '' + + if (reason !== '' || adv !== '') + data = reason + (adv !== '' ? ('+' + adv) : '') + + break; + } + + // construct packet with required fragments + var encoded = type + ':' + id + (ack == 'data' ? '+' : '') + ':' + endpoint; + + // data fragment is optional + if (data !== null && data !== undefined) + encoded += ':' + data; + + return encoded; +}; + +/** + * Encodes multiple messages (payload). + * + * @param {Array} messages + * @api private + */ + +exports.encodePayload = function (packets) { + var decoded = ''; + + if (packets.length == 1) + return packets[0]; + + for (var i = 0, l = packets.length; i < l; i++) { + var packet = packets[i]; + decoded += '\ufffd' + packet.length + '\ufffd' + packets[i] + } + + return decoded; +}; + +/** + * Decodes a packet + * + * @api private + */ + +var regexp = /([^:]+):([0-9]+)?(\+)?:([^:]+)?:?([\s\S]*)?/; + +/** + * Wrap the JSON.parse in a seperate function the crankshaft optimizer will + * only punish this function for the usage for try catch + * + * @api private + */ + +function parse (data) { + try { return JSON.parse(data) } + catch (e) { return false } +} + +exports.decodePacket = function (data) { + var pieces = data.match(regexp); + + if (!pieces) return {}; + + var id = pieces[2] || '' + , data = pieces[5] || '' + , packet = { + type: packetslist[pieces[1]] + , endpoint: pieces[4] || '' + }; + + // whether we need to acknowledge the packet + if (id) { + packet.id = id; + if (pieces[3]) + packet.ack = 'data'; + else + packet.ack = true; + } + + // handle different packet types + switch (packet.type) { + case 'message': + packet.data = data || ''; + break; + + case 'event': + pieces = parse(data); + if (pieces) { + packet.name = pieces.name; + packet.args = pieces.args; + } + + packet.args = packet.args || []; + break; + + case 'json': + packet.data = parse(data); + break; + + case 'connect': + packet.qs = data || ''; + break; + + case 'ack': + pieces = data.match(/^([0-9]+)(\+)?(.*)/); + if (pieces) { + packet.ackId = pieces[1]; + packet.args = []; + + if (pieces[3]) { + packet.args = parse(pieces[3]) || []; + } + } + break; + + case 'error': + pieces = data.split('+'); + packet.reason = reasonslist[pieces[0]] || ''; + packet.advice = advicelist[pieces[1]] || ''; + } + + return packet; +}; + +/** + * Decodes data payload. Detects multiple messages + * + * @return {Array} messages + * @api public + */ + +exports.decodePayload = function (data) { + if (undefined == data || null == data) { + return []; + } + + if (data[0] == '\ufffd') { + var ret = []; + + for (var i = 1, length = ''; i < data.length; i++) { + if (data[i] == '\ufffd') { + ret.push(exports.decodePacket(data.substr(i + 1, length))); + i += Number(length) + 1; + length = ''; + } else { + length += data[i]; + } + } + + return ret; + } else { + return [exports.decodePacket(data)]; + } +}; diff --git a/signaling-server/node_modules/socket.io/lib/socket.io.js b/signaling-server/node_modules/socket.io/lib/socket.io.js new file mode 100644 index 0000000..d9d1c1f --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/socket.io.js @@ -0,0 +1,143 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module dependencies. + */ + +var client = require('socket.io-client'); + +/** + * Version. + */ + +exports.version = '0.9.16'; + +/** + * Supported protocol version. + */ + +exports.protocol = 1; + +/** + * Client that we serve. + */ + +exports.clientVersion = client.version; + +/** + * Attaches a manager + * + * @param {HTTPServer/Number} a HTTP/S server or a port number to listen on. + * @param {Object} opts to be passed to Manager and/or http server + * @param {Function} callback if a port is supplied + * @api public + */ + +exports.listen = function (server, options, fn) { + if ('function' == typeof server) { + console.warn('Socket.IO\'s `listen()` method expects an `http.Server` instance\n' + + 'as its first parameter. Are you migrating from Express 2.x to 3.x?\n' + + 'If so, check out the "Socket.IO compatibility" section at:\n' + + 'https://github.com/visionmedia/express/wiki/Migrating-from-2.x-to-3.x'); + } + + if ('function' == typeof options) { + fn = options; + options = {}; + } + + if ('undefined' == typeof server) { + // create a server that listens on port 80 + server = 80; + } + + if ('number' == typeof server) { + // if a port number is passed + var port = server; + + if (options && options.key) + server = require('https').createServer(options); + else + server = require('http').createServer(); + + // default response + server.on('request', function (req, res) { + res.writeHead(200); + res.end('Welcome to socket.io.'); + }); + + server.listen(port, fn); + } + + // otherwise assume a http/s server + return new exports.Manager(server, options); +}; + +/** + * Manager constructor. + * + * @api public + */ + +exports.Manager = require('./manager'); + +/** + * Transport constructor. + * + * @api public + */ + +exports.Transport = require('./transport'); + +/** + * Socket constructor. + * + * @api public + */ + +exports.Socket = require('./socket'); + +/** + * Static constructor. + * + * @api public + */ + +exports.Static = require('./static'); + +/** + * Store constructor. + * + * @api public + */ + +exports.Store = require('./store'); + +/** + * Memory Store constructor. + * + * @api public + */ + +exports.MemoryStore = require('./stores/memory'); + +/** + * Redis Store constructor. + * + * @api public + */ + +exports.RedisStore = require('./stores/redis'); + +/** + * Parser. + * + * @api public + */ + +exports.parser = require('./parser'); diff --git a/signaling-server/node_modules/socket.io/lib/socket.js b/signaling-server/node_modules/socket.io/lib/socket.js new file mode 100644 index 0000000..cd39635 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/socket.js @@ -0,0 +1,369 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module dependencies. + */ + +var parser = require('./parser') + , util = require('./util') + , EventEmitter = process.EventEmitter + +/** + * Export the constructor. + */ + +exports = module.exports = Socket; + +/** + * Default error event listener to prevent uncaught exceptions. + */ + +var defaultError = function () {}; + +/** + * Socket constructor. + * + * @param {Manager} manager instance + * @param {String} session id + * @param {Namespace} namespace the socket belongs to + * @param {Boolean} whether the + * @api public + */ + +function Socket (manager, id, nsp, readable) { + this.id = id; + this.namespace = nsp; + this.manager = manager; + this.disconnected = false; + this.ackPackets = 0; + this.acks = {}; + this.setFlags(); + this.readable = readable; + this.store = this.manager.store.client(this.id); + this.on('error', defaultError); +}; + +/** + * Inherits from EventEmitter. + */ + +Socket.prototype.__proto__ = EventEmitter.prototype; + +/** + * Accessor shortcut for the handshake data + * + * @api private + */ + +Socket.prototype.__defineGetter__('handshake', function () { + return this.manager.handshaken[this.id]; +}); + +/** + * Accessor shortcut for the transport type + * + * @api private + */ + +Socket.prototype.__defineGetter__('transport', function () { + return this.manager.transports[this.id].name; +}); + +/** + * Accessor shortcut for the logger. + * + * @api private + */ + +Socket.prototype.__defineGetter__('log', function () { + return this.manager.log; +}); + +/** + * JSON message flag. + * + * @api public + */ + +Socket.prototype.__defineGetter__('json', function () { + this.flags.json = true; + return this; +}); + +/** + * Volatile message flag. + * + * @api public + */ + +Socket.prototype.__defineGetter__('volatile', function () { + this.flags.volatile = true; + return this; +}); + +/** + * Broadcast message flag. + * + * @api public + */ + +Socket.prototype.__defineGetter__('broadcast', function () { + this.flags.broadcast = true; + return this; +}); + +/** + * Overrides the room to broadcast messages to (flag) + * + * @api public + */ + +Socket.prototype.to = Socket.prototype.in = function (room) { + this.flags.room = room; + return this; +}; + +/** + * Resets flags + * + * @api private + */ + +Socket.prototype.setFlags = function () { + this.flags = { + endpoint: this.namespace.name + , room: '' + }; + return this; +}; + +/** + * Triggered on disconnect + * + * @api private + */ + +Socket.prototype.onDisconnect = function (reason) { + if (!this.disconnected) { + this.$emit('disconnect', reason); + this.disconnected = true; + } +}; + +/** + * Joins a user to a room. + * + * @api public + */ + +Socket.prototype.join = function (name, fn) { + var nsp = this.namespace.name + , name = (nsp + '/') + name; + + this.manager.onJoin(this.id, name); + this.manager.store.publish('join', this.id, name); + + if (fn) { + this.log.warn('Client#join callback is deprecated'); + fn(); + } + + return this; +}; + +/** + * Un-joins a user from a room. + * + * @api public + */ + +Socket.prototype.leave = function (name, fn) { + var nsp = this.namespace.name + , name = (nsp + '/') + name; + + this.manager.onLeave(this.id, name); + this.manager.store.publish('leave', this.id, name); + + if (fn) { + this.log.warn('Client#leave callback is deprecated'); + fn(); + } + + return this; +}; + +/** + * Transmits a packet. + * + * @api private + */ + +Socket.prototype.packet = function (packet) { + if (this.flags.broadcast) { + this.log.debug('broadcasting packet'); + this.namespace.in(this.flags.room).except(this.id).packet(packet); + } else { + packet.endpoint = this.flags.endpoint; + packet = parser.encodePacket(packet); + + this.dispatch(packet, this.flags.volatile); + } + + this.setFlags(); + + return this; +}; + +/** + * Dispatches a packet + * + * @api private + */ + +Socket.prototype.dispatch = function (packet, volatile) { + if (this.manager.transports[this.id] && this.manager.transports[this.id].open) { + this.manager.transports[this.id].onDispatch(packet, volatile); + } else { + if (!volatile) { + this.manager.onClientDispatch(this.id, packet, volatile); + } + + this.manager.store.publish('dispatch-remote', this.id, packet, volatile); + } +}; + +/** + * Stores data for the client. + * + * @api public + */ + +Socket.prototype.set = function (key, value, fn) { + this.store.set(key, value, fn); + return this; +}; + +/** + * Retrieves data for the client + * + * @api public + */ + +Socket.prototype.get = function (key, fn) { + this.store.get(key, fn); + return this; +}; + +/** + * Checks data for the client + * + * @api public + */ + +Socket.prototype.has = function (key, fn) { + this.store.has(key, fn); + return this; +}; + +/** + * Deletes data for the client + * + * @api public + */ + +Socket.prototype.del = function (key, fn) { + this.store.del(key, fn); + return this; +}; + +/** + * Kicks client + * + * @api public + */ + +Socket.prototype.disconnect = function () { + if (!this.disconnected) { + this.log.info('booting client'); + + if ('' === this.namespace.name) { + if (this.manager.transports[this.id] && this.manager.transports[this.id].open) { + this.manager.transports[this.id].onForcedDisconnect(); + } else { + this.manager.onClientDisconnect(this.id); + this.manager.store.publish('disconnect-remote', this.id); + } + } else { + this.packet({type: 'disconnect'}); + this.manager.onLeave(this.id, this.namespace.name); + this.$emit('disconnect', 'booted'); + } + + } + + return this; +}; + +/** + * Send a message. + * + * @api public + */ + +Socket.prototype.send = function (data, fn) { + var packet = { + type: this.flags.json ? 'json' : 'message' + , data: data + }; + + if (fn) { + packet.id = ++this.ackPackets; + packet.ack = true; + this.acks[packet.id] = fn; + } + + return this.packet(packet); +}; + +/** + * Original emit function. + * + * @api private + */ + +Socket.prototype.$emit = EventEmitter.prototype.emit; + +/** + * Emit override for custom events. + * + * @api public + */ + +Socket.prototype.emit = function (ev) { + if (ev == 'newListener') { + return this.$emit.apply(this, arguments); + } + + var args = util.toArray(arguments).slice(1) + , lastArg = args[args.length - 1] + , packet = { + type: 'event' + , name: ev + }; + + if ('function' == typeof lastArg) { + packet.id = ++this.ackPackets; + packet.ack = lastArg.length ? 'data' : true; + this.acks[packet.id] = lastArg; + args = args.slice(0, args.length - 1); + } + + packet.args = args; + + return this.packet(packet); +}; diff --git a/signaling-server/node_modules/socket.io/lib/static.js b/signaling-server/node_modules/socket.io/lib/static.js new file mode 100644 index 0000000..fe50593 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/static.js @@ -0,0 +1,395 @@ + +/*! +* socket.io-node +* Copyright(c) 2011 LearnBoost <dev@learnboost.com> +* MIT Licensed +*/ + +/** + * Module dependencies. + */ + +var client = require('socket.io-client') + , cp = require('child_process') + , fs = require('fs') + , util = require('./util'); + +/** + * File type details. + * + * @api private + */ + +var mime = { + js: { + type: 'application/javascript' + , encoding: 'utf8' + , gzip: true + } + , swf: { + type: 'application/x-shockwave-flash' + , encoding: 'binary' + , gzip: false + } +}; + +/** + * Regexp for matching custom transport patterns. Users can configure their own + * socket.io bundle based on the url structure. Different transport names are + * concatinated using the `+` char. /socket.io/socket.io+websocket.js should + * create a bundle that only contains support for the websocket. + * + * @api private + */ + +var bundle = /\+((?:\+)?[\w\-]+)*(?:\.v\d+\.\d+\.\d+)?(?:\.js)$/ + , versioning = /\.v\d+\.\d+\.\d+(?:\.js)$/; + +/** + * Export the constructor + */ + +exports = module.exports = Static; + +/** + * Static constructor + * + * @api public + */ + +function Static (manager) { + this.manager = manager; + this.cache = {}; + this.paths = {}; + + this.init(); +} + +/** + * Initialize the Static by adding default file paths. + * + * @api public + */ + +Static.prototype.init = function () { + /** + * Generates a unique id based the supplied transports array + * + * @param {Array} transports The array with transport types + * @api private + */ + function id (transports) { + var id = transports.join('').split('').map(function (char) { + return ('' + char.charCodeAt(0)).split('').pop(); + }).reduce(function (char, id) { + return char +id; + }); + + return client.version + ':' + id; + } + + /** + * Generates a socket.io-client file based on the supplied transports. + * + * @param {Array} transports The array with transport types + * @param {Function} callback Callback for the static.write + * @api private + */ + + function build (transports, callback) { + client.builder(transports, { + minify: self.manager.enabled('browser client minification') + }, function (err, content) { + callback(err, content ? new Buffer(content) : null, id(transports)); + } + ); + } + + var self = this; + + // add our default static files + this.add('/static/flashsocket/WebSocketMain.swf', { + file: client.dist + '/WebSocketMain.swf' + }); + + this.add('/static/flashsocket/WebSocketMainInsecure.swf', { + file: client.dist + '/WebSocketMainInsecure.swf' + }); + + // generates dedicated build based on the available transports + this.add('/socket.io.js', function (path, callback) { + build(self.manager.get('transports'), callback); + }); + + this.add('/socket.io.v', { mime: mime.js }, function (path, callback) { + build(self.manager.get('transports'), callback); + }); + + // allow custom builds based on url paths + this.add('/socket.io+', { mime: mime.js }, function (path, callback) { + var available = self.manager.get('transports') + , matches = path.match(bundle) + , transports = []; + + if (!matches) return callback('No valid transports'); + + // make sure they valid transports + matches[0].split('.')[0].split('+').slice(1).forEach(function (transport) { + if (!!~available.indexOf(transport)) { + transports.push(transport); + } + }); + + if (!transports.length) return callback('No valid transports'); + build(transports, callback); + }); + + // clear cache when transports change + this.manager.on('set:transports', function (key, value) { + delete self.cache['/socket.io.js']; + Object.keys(self.cache).forEach(function (key) { + if (bundle.test(key)) { + delete self.cache[key]; + } + }); + }); +}; + +/** + * Gzip compress buffers. + * + * @param {Buffer} data The buffer that needs gzip compression + * @param {Function} callback + * @api public + */ + +Static.prototype.gzip = function (data, callback) { + var gzip = cp.spawn('gzip', ['-9', '-c', '-f', '-n']) + , encoding = Buffer.isBuffer(data) ? 'binary' : 'utf8' + , buffer = [] + , err; + + gzip.stdout.on('data', function (data) { + buffer.push(data); + }); + + gzip.stderr.on('data', function (data) { + err = data +''; + buffer.length = 0; + }); + + gzip.on('close', function () { + if (err) return callback(err); + + var size = 0 + , index = 0 + , i = buffer.length + , content; + + while (i--) { + size += buffer[i].length; + } + + content = new Buffer(size); + i = buffer.length; + + buffer.forEach(function (buffer) { + var length = buffer.length; + + buffer.copy(content, index, 0, length); + index += length; + }); + + buffer.length = 0; + callback(null, content); + }); + + gzip.stdin.end(data, encoding); +}; + +/** + * Is the path a static file? + * + * @param {String} path The path that needs to be checked + * @api public + */ + +Static.prototype.has = function (path) { + // fast case + if (this.paths[path]) return this.paths[path]; + + var keys = Object.keys(this.paths) + , i = keys.length; + + while (i--) { + if (-~path.indexOf(keys[i])) return this.paths[keys[i]]; + } + + return false; +}; + +/** + * Add new paths new paths that can be served using the static provider. + * + * @param {String} path The path to respond to + * @param {Options} options Options for writing out the response + * @param {Function} [callback] Optional callback if no options.file is + * supplied this would be called instead. + * @api public + */ + +Static.prototype.add = function (path, options, callback) { + var extension = /(?:\.(\w{1,4}))$/.exec(path); + + if (!callback && typeof options == 'function') { + callback = options; + options = {}; + } + + options.mime = options.mime || (extension ? mime[extension[1]] : false); + + if (callback) options.callback = callback; + if (!(options.file || options.callback) || !options.mime) return false; + + this.paths[path] = options; + + return true; +}; + +/** + * Writes a static response. + * + * @param {String} path The path for the static content + * @param {HTTPRequest} req The request object + * @param {HTTPResponse} res The response object + * @api public + */ + +Static.prototype.write = function (path, req, res) { + /** + * Write a response without throwing errors because can throw error if the + * response is no longer writable etc. + * + * @api private + */ + + function write (status, headers, content, encoding) { + try { + res.writeHead(status, headers || undefined); + + // only write content if it's not a HEAD request and we actually have + // some content to write (304's doesn't have content). + res.end( + req.method !== 'HEAD' && content ? content : '' + , encoding || undefined + ); + } catch (e) {} + } + + /** + * Answers requests depending on the request properties and the reply object. + * + * @param {Object} reply The details and content to reply the response with + * @api private + */ + + function answer (reply) { + var cached = req.headers['if-none-match'] === reply.etag; + if (cached && self.manager.enabled('browser client etag')) { + return write(304); + } + + var accept = req.headers['accept-encoding'] || '' + , gzip = !!~accept.toLowerCase().indexOf('gzip') + , mime = reply.mime + , versioned = reply.versioned + , headers = { + 'Content-Type': mime.type + }; + + // check if we can add a etag + if (self.manager.enabled('browser client etag') && reply.etag && !versioned) { + headers['Etag'] = reply.etag; + } + + // see if we need to set Expire headers because the path is versioned + if (versioned) { + var expires = self.manager.get('browser client expires'); + headers['Cache-Control'] = 'private, x-gzip-ok="", max-age=' + expires; + headers['Date'] = new Date().toUTCString(); + headers['Expires'] = new Date(Date.now() + (expires * 1000)).toUTCString(); + } + + if (gzip && reply.gzip) { + headers['Content-Length'] = reply.gzip.length; + headers['Content-Encoding'] = 'gzip'; + headers['Vary'] = 'Accept-Encoding'; + write(200, headers, reply.gzip.content, mime.encoding); + } else { + headers['Content-Length'] = reply.length; + write(200, headers, reply.content, mime.encoding); + } + + self.manager.log.debug('served static content ' + path); + } + + var self = this + , details; + + // most common case first + if (this.manager.enabled('browser client cache') && this.cache[path]) { + return answer(this.cache[path]); + } else if (this.manager.get('browser client handler')) { + return this.manager.get('browser client handler').call(this, req, res); + } else if ((details = this.has(path))) { + /** + * A small helper function that will let us deal with fs and dynamic files + * + * @param {Object} err Optional error + * @param {Buffer} content The data + * @api private + */ + + function ready (err, content, etag) { + if (err) { + self.manager.log.warn('Unable to serve file. ' + (err.message || err)); + return write(500, null, 'Error serving static ' + path); + } + + // store the result in the cache + var reply = self.cache[path] = { + content: content + , length: content.length + , mime: details.mime + , etag: etag || client.version + , versioned: versioning.test(path) + }; + + // check if gzip is enabled + if (details.mime.gzip && self.manager.enabled('browser client gzip')) { + self.gzip(content, function (err, content) { + if (!err) { + reply.gzip = { + content: content + , length: content.length + } + } + + answer(reply); + }); + } else { + answer(reply); + } + } + + if (details.file) { + fs.readFile(details.file, ready); + } else if(details.callback) { + details.callback.call(this, path, ready); + } else { + write(404, null, 'File handle not found'); + } + } else { + write(404, null, 'File not found'); + } +}; diff --git a/signaling-server/node_modules/socket.io/lib/store.js b/signaling-server/node_modules/socket.io/lib/store.js new file mode 100644 index 0000000..06c0389 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/store.js @@ -0,0 +1,98 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Expose the constructor. + */ + +exports = module.exports = Store; + +/** + * Module dependencies. + */ + +var EventEmitter = process.EventEmitter; + +/** + * Store interface + * + * @api public + */ + +function Store (options) { + this.options = options; + this.clients = {}; +}; + +/** + * Inherit from EventEmitter. + */ + +Store.prototype.__proto__ = EventEmitter.prototype; + +/** + * Initializes a client store + * + * @param {String} id + * @api public + */ + +Store.prototype.client = function (id) { + if (!this.clients[id]) { + this.clients[id] = new (this.constructor.Client)(this, id); + } + + return this.clients[id]; +}; + +/** + * Destroys a client + * + * @api {String} sid + * @param {Number} number of seconds to expire client data + * @api private + */ + +Store.prototype.destroyClient = function (id, expiration) { + if (this.clients[id]) { + this.clients[id].destroy(expiration); + delete this.clients[id]; + } + + return this; +}; + +/** + * Destroys the store + * + * @param {Number} number of seconds to expire client data + * @api private + */ + +Store.prototype.destroy = function (clientExpiration) { + var keys = Object.keys(this.clients) + , count = keys.length; + + for (var i = 0, l = count; i < l; i++) { + this.destroyClient(keys[i], clientExpiration); + } + + this.clients = {}; + + return this; +}; + +/** + * Client. + * + * @api public + */ + +Store.Client = function (store, id) { + this.store = store; + this.id = id; +}; diff --git a/signaling-server/node_modules/socket.io/lib/stores/memory.js b/signaling-server/node_modules/socket.io/lib/stores/memory.js new file mode 100644 index 0000000..8b731a7 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/stores/memory.js @@ -0,0 +1,143 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module dependencies. + */ + +var crypto = require('crypto') + , Store = require('../store'); + +/** + * Exports the constructor. + */ + +exports = module.exports = Memory; +Memory.Client = Client; + +/** + * Memory store + * + * @api public + */ + +function Memory (opts) { + Store.call(this, opts); +}; + +/** + * Inherits from Store. + */ + +Memory.prototype.__proto__ = Store.prototype; + +/** + * Publishes a message. + * + * @api private + */ + +Memory.prototype.publish = function () { }; + +/** + * Subscribes to a channel + * + * @api private + */ + +Memory.prototype.subscribe = function () { }; + +/** + * Unsubscribes + * + * @api private + */ + +Memory.prototype.unsubscribe = function () { }; + +/** + * Client constructor + * + * @api private + */ + +function Client () { + Store.Client.apply(this, arguments); + this.data = {}; +}; + +/** + * Inherits from Store.Client + */ + +Client.prototype.__proto__ = Store.Client; + +/** + * Gets a key + * + * @api public + */ + +Client.prototype.get = function (key, fn) { + fn(null, this.data[key] === undefined ? null : this.data[key]); + return this; +}; + +/** + * Sets a key + * + * @api public + */ + +Client.prototype.set = function (key, value, fn) { + this.data[key] = value; + fn && fn(null); + return this; +}; + +/** + * Has a key + * + * @api public + */ + +Client.prototype.has = function (key, fn) { + fn(null, key in this.data); +}; + +/** + * Deletes a key + * + * @api public + */ + +Client.prototype.del = function (key, fn) { + delete this.data[key]; + fn && fn(null); + return this; +}; + +/** + * Destroys the client. + * + * @param {Number} number of seconds to expire data + * @api private + */ + +Client.prototype.destroy = function (expiration) { + if ('number' != typeof expiration) { + this.data = {}; + } else { + var self = this; + + setTimeout(function () { + self.data = {}; + }, expiration * 1000); + } + + return this; +}; diff --git a/signaling-server/node_modules/socket.io/lib/stores/redis.js b/signaling-server/node_modules/socket.io/lib/stores/redis.js new file mode 100644 index 0000000..8fea235 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/stores/redis.js @@ -0,0 +1,269 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module dependencies. + */ + +var crypto = require('crypto') + , Store = require('../store') + , assert = require('assert'); + +/** + * Exports the constructor. + */ + +exports = module.exports = Redis; +Redis.Client = Client; + +/** + * Redis store. + * Options: + * - nodeId (fn) gets an id that uniquely identifies this node + * - redis (fn) redis constructor, defaults to redis + * - redisPub (object) options to pass to the pub redis client + * - redisSub (object) options to pass to the sub redis client + * - redisClient (object) options to pass to the general redis client + * - pack (fn) custom packing, defaults to JSON or msgpack if installed + * - unpack (fn) custom packing, defaults to JSON or msgpack if installed + * + * @api public + */ + +function Redis (opts) { + opts = opts || {}; + + // node id to uniquely identify this node + var nodeId = opts.nodeId || function () { + // by default, we generate a random id + return Math.abs(Math.random() * Math.random() * Date.now() | 0); + }; + + this.nodeId = nodeId(); + + // packing / unpacking mechanism + if (opts.pack) { + this.pack = opts.pack; + this.unpack = opts.unpack; + } else { + try { + var msgpack = require('msgpack'); + this.pack = msgpack.pack; + this.unpack = msgpack.unpack; + } catch (e) { + this.pack = JSON.stringify; + this.unpack = JSON.parse; + } + } + + var redis = opts.redis || require('redis') + , RedisClient = redis.RedisClient; + + // initialize a pubsub client and a regular client + if (opts.redisPub instanceof RedisClient) { + this.pub = opts.redisPub; + } else { + opts.redisPub || (opts.redisPub = {}); + this.pub = redis.createClient(opts.redisPub.port, opts.redisPub.host, opts.redisPub); + } + if (opts.redisSub instanceof RedisClient) { + this.sub = opts.redisSub; + } else { + opts.redisSub || (opts.redisSub = {}); + this.sub = redis.createClient(opts.redisSub.port, opts.redisSub.host, opts.redisSub); + } + if (opts.redisClient instanceof RedisClient) { + this.cmd = opts.redisClient; + } else { + opts.redisClient || (opts.redisClient = {}); + this.cmd = redis.createClient(opts.redisClient.port, opts.redisClient.host, opts.redisClient); + } + + Store.call(this, opts); + + this.sub.setMaxListeners(0); + this.setMaxListeners(0); +}; + +/** + * Inherits from Store. + */ + +Redis.prototype.__proto__ = Store.prototype; + +/** + * Publishes a message. + * + * @api private + */ + +Redis.prototype.publish = function (name) { + var args = Array.prototype.slice.call(arguments, 1); + this.pub.publish(name, this.pack({ nodeId: this.nodeId, args: args })); + this.emit.apply(this, ['publish', name].concat(args)); +}; + +/** + * Subscribes to a channel + * + * @api private + */ + +Redis.prototype.subscribe = function (name, consumer, fn) { + this.sub.subscribe(name); + + if (consumer || fn) { + var self = this; + + self.sub.on('subscribe', function subscribe (ch) { + if (name == ch) { + function message (ch, msg) { + if (name == ch) { + msg = self.unpack(msg); + + // we check that the message consumed wasnt emitted by this node + if (self.nodeId != msg.nodeId) { + consumer.apply(null, msg.args); + } + } + }; + + self.sub.on('message', message); + + self.on('unsubscribe', function unsubscribe (ch) { + if (name == ch) { + self.sub.removeListener('message', message); + self.removeListener('unsubscribe', unsubscribe); + } + }); + + self.sub.removeListener('subscribe', subscribe); + + fn && fn(); + } + }); + } + + this.emit('subscribe', name, consumer, fn); +}; + +/** + * Unsubscribes + * + * @api private + */ + +Redis.prototype.unsubscribe = function (name, fn) { + this.sub.unsubscribe(name); + + if (fn) { + var client = this.sub; + + client.on('unsubscribe', function unsubscribe (ch) { + if (name == ch) { + fn(); + client.removeListener('unsubscribe', unsubscribe); + } + }); + } + + this.emit('unsubscribe', name, fn); +}; + +/** + * Destroys the store + * + * @api public + */ + +Redis.prototype.destroy = function () { + Store.prototype.destroy.call(this); + + this.pub.end(); + this.sub.end(); + this.cmd.end(); +}; + +/** + * Client constructor + * + * @api private + */ + +function Client (store, id) { + Store.Client.call(this, store, id); +}; + +/** + * Inherits from Store.Client + */ + +Client.prototype.__proto__ = Store.Client; + +/** + * Redis hash get + * + * @api private + */ + +Client.prototype.get = function (key, fn) { + this.store.cmd.hget(this.id, key, fn); + return this; +}; + +/** + * Redis hash set + * + * @api private + */ + +Client.prototype.set = function (key, value, fn) { + this.store.cmd.hset(this.id, key, value, fn); + return this; +}; + +/** + * Redis hash del + * + * @api private + */ + +Client.prototype.del = function (key, fn) { + this.store.cmd.hdel(this.id, key, fn); + return this; +}; + +/** + * Redis hash has + * + * @api private + */ + +Client.prototype.has = function (key, fn) { + this.store.cmd.hexists(this.id, key, function (err, has) { + if (err) return fn(err); + fn(null, !!has); + }); + return this; +}; + +/** + * Destroys client + * + * @param {Number} number of seconds to expire data + * @api private + */ + +Client.prototype.destroy = function (expiration) { + if ('number' != typeof expiration) { + this.store.cmd.del(this.id); + } else { + this.store.cmd.expire(this.id, expiration); + } + + return this; +}; diff --git a/signaling-server/node_modules/socket.io/lib/transport.js b/signaling-server/node_modules/socket.io/lib/transport.js new file mode 100644 index 0000000..e04d2ae --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transport.js @@ -0,0 +1,516 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module dependencies. + */ + +var parser = require('./parser'); + +/** + * Expose the constructor. + */ + +exports = module.exports = Transport; + +/** + * Transport constructor. + * + * @api public + */ + +function Transport (mng, data, req) { + this.manager = mng; + this.id = data.id; + this.disconnected = false; + this.drained = true; + this.handleRequest(req); +}; + +/** + * Access the logger. + * + * @api public + */ + +Transport.prototype.__defineGetter__('log', function () { + return this.manager.log; +}); + +/** + * Access the store. + * + * @api public + */ + +Transport.prototype.__defineGetter__('store', function () { + return this.manager.store; +}); + +/** + * Handles a request when it's set. + * + * @api private + */ + +Transport.prototype.handleRequest = function (req) { + this.log.debug('setting request', req.method, req.url); + this.req = req; + + if (req.method == 'GET') { + this.socket = req.socket; + this.open = true; + this.drained = true; + this.setHeartbeatInterval(); + + this.setHandlers(); + this.onSocketConnect(); + } +}; + +/** + * Called when a connection is first set. + * + * @api private + */ + +Transport.prototype.onSocketConnect = function () { }; + +/** + * Sets transport handlers + * + * @api private + */ + +Transport.prototype.setHandlers = function () { + var self = this; + + this.bound = { + end: this.onSocketEnd.bind(this) + , close: this.onSocketClose.bind(this) + , error: this.onSocketError.bind(this) + , drain: this.onSocketDrain.bind(this) + }; + + this.socket.on('end', this.bound.end); + this.socket.on('close', this.bound.close); + this.socket.on('error', this.bound.error); + this.socket.on('drain', this.bound.drain); + + this.handlersSet = true; +}; + +/** + * Removes transport handlers + * + * @api private + */ + +Transport.prototype.clearHandlers = function () { + if (this.handlersSet) { + this.socket.removeListener('end', this.bound.end); + this.socket.removeListener('close', this.bound.close); + this.socket.removeListener('error', this.bound.error); + this.socket.removeListener('drain', this.bound.drain); + } +}; + +/** + * Called when the connection dies + * + * @api private + */ + +Transport.prototype.onSocketEnd = function () { + this.end('socket end'); +}; + +/** + * Called when the connection dies + * + * @api private + */ + +Transport.prototype.onSocketClose = function (error) { + this.end(error ? 'socket error' : 'socket close'); +}; + +/** + * Called when the connection has an error. + * + * @api private + */ + +Transport.prototype.onSocketError = function (err) { + if (this.open) { + this.socket.destroy(); + this.onClose(); + } + + this.log.info('socket error ' + err.stack); +}; + +/** + * Called when the connection is drained. + * + * @api private + */ + +Transport.prototype.onSocketDrain = function () { + this.drained = true; +}; + +/** + * Called upon receiving a heartbeat packet. + * + * @api private + */ + +Transport.prototype.onHeartbeatClear = function () { + this.clearHeartbeatTimeout(); + this.setHeartbeatInterval(); +}; + +/** + * Called upon a forced disconnection. + * + * @api private + */ + +Transport.prototype.onForcedDisconnect = function () { + if (!this.disconnected) { + this.log.info('transport end by forced client disconnection'); + if (this.open) { + this.packet({ type: 'disconnect' }); + } + this.end('booted'); + } +}; + +/** + * Dispatches a packet. + * + * @api private + */ + +Transport.prototype.onDispatch = function (packet, volatile) { + if (volatile) { + this.writeVolatile(packet); + } else { + this.write(packet); + } +}; + +/** + * Sets the close timeout. + */ + +Transport.prototype.setCloseTimeout = function () { + if (!this.closeTimeout) { + var self = this; + + this.closeTimeout = setTimeout(function () { + self.log.debug('fired close timeout for client', self.id); + self.closeTimeout = null; + self.end('close timeout'); + }, this.manager.get('close timeout') * 1000); + + this.log.debug('set close timeout for client', this.id); + } +}; + +/** + * Clears the close timeout. + */ + +Transport.prototype.clearCloseTimeout = function () { + if (this.closeTimeout) { + clearTimeout(this.closeTimeout); + this.closeTimeout = null; + + this.log.debug('cleared close timeout for client', this.id); + } +}; + +/** + * Sets the heartbeat timeout + */ + +Transport.prototype.setHeartbeatTimeout = function () { + if (!this.heartbeatTimeout && this.manager.enabled('heartbeats')) { + var self = this; + + this.heartbeatTimeout = setTimeout(function () { + self.log.debug('fired heartbeat timeout for client', self.id); + self.heartbeatTimeout = null; + self.end('heartbeat timeout'); + }, this.manager.get('heartbeat timeout') * 1000); + + this.log.debug('set heartbeat timeout for client', this.id); + } +}; + +/** + * Clears the heartbeat timeout + * + * @param text + */ + +Transport.prototype.clearHeartbeatTimeout = function () { + if (this.heartbeatTimeout && this.manager.enabled('heartbeats')) { + clearTimeout(this.heartbeatTimeout); + this.heartbeatTimeout = null; + this.log.debug('cleared heartbeat timeout for client', this.id); + } +}; + +/** + * Sets the heartbeat interval. To be called when a connection opens and when + * a heartbeat is received. + * + * @api private + */ + +Transport.prototype.setHeartbeatInterval = function () { + if (!this.heartbeatInterval && this.manager.enabled('heartbeats')) { + var self = this; + + this.heartbeatInterval = setTimeout(function () { + self.heartbeat(); + self.heartbeatInterval = null; + }, this.manager.get('heartbeat interval') * 1000); + + this.log.debug('set heartbeat interval for client', this.id); + } +}; + +/** + * Clears all timeouts. + * + * @api private + */ + +Transport.prototype.clearTimeouts = function () { + this.clearCloseTimeout(); + this.clearHeartbeatTimeout(); + this.clearHeartbeatInterval(); +}; + +/** + * Sends a heartbeat + * + * @api private + */ + +Transport.prototype.heartbeat = function () { + if (this.open) { + this.log.debug('emitting heartbeat for client', this.id); + this.packet({ type: 'heartbeat' }); + this.setHeartbeatTimeout(); + } + + return this; +}; + +/** + * Handles a message. + * + * @param {Object} packet object + * @api private + */ + +Transport.prototype.onMessage = function (packet) { + var current = this.manager.transports[this.id]; + + if ('heartbeat' == packet.type) { + this.log.debug('got heartbeat packet'); + + if (current && current.open) { + current.onHeartbeatClear(); + } else { + this.store.publish('heartbeat-clear', this.id); + } + } else { + if ('disconnect' == packet.type && packet.endpoint == '') { + this.log.debug('got disconnection packet'); + + if (current) { + current.onForcedDisconnect(); + } else { + this.store.publish('disconnect-force', this.id); + } + + return; + } + + if (packet.id && packet.ack != 'data') { + this.log.debug('acknowledging packet automatically'); + + var ack = parser.encodePacket({ + type: 'ack' + , ackId: packet.id + , endpoint: packet.endpoint || '' + }); + + if (current && current.open) { + current.onDispatch(ack); + } else { + this.manager.onClientDispatch(this.id, ack); + this.store.publish('dispatch-remote', this.id, ack); + } + } + + // handle packet locally or publish it + if (current) { + this.manager.onClientMessage(this.id, packet); + } else { + this.store.publish('message-remote', this.id, packet); + } + } +}; + +/** + * Clears the heartbeat interval + * + * @api private + */ + +Transport.prototype.clearHeartbeatInterval = function () { + if (this.heartbeatInterval && this.manager.enabled('heartbeats')) { + clearTimeout(this.heartbeatInterval); + this.heartbeatInterval = null; + this.log.debug('cleared heartbeat interval for client', this.id); + } +}; + +/** + * Finishes the connection and makes sure client doesn't reopen + * + * @api private + */ + +Transport.prototype.disconnect = function (reason) { + this.packet({ type: 'disconnect' }); + this.end(reason); + + return this; +}; + +/** + * Closes the connection. + * + * @api private + */ + +Transport.prototype.close = function () { + if (this.open) { + this.doClose(); + this.onClose(); + } +}; + +/** + * Called upon a connection close. + * + * @api private + */ + +Transport.prototype.onClose = function () { + if (this.open) { + this.setCloseTimeout(); + this.clearHandlers(); + this.open = false; + this.manager.onClose(this.id); + this.store.publish('close', this.id); + } +}; + +/** + * Cleans up the connection, considers the client disconnected. + * + * @api private + */ + +Transport.prototype.end = function (reason) { + if (!this.disconnected) { + this.log.info('transport end (' + reason + ')'); + + var local = this.manager.transports[this.id]; + + this.close(); + this.clearTimeouts(); + this.disconnected = true; + + if (local) { + this.manager.onClientDisconnect(this.id, reason); + } + + this.store.publish('disconnect-remote', this.id, reason); + } +}; + +/** + * Signals that the transport should pause and buffer data. + * + * @api public + */ + +Transport.prototype.discard = function () { + this.log.debug('discarding transport'); + this.discarded = true; + this.clearTimeouts(); + this.clearHandlers(); + + return this; +}; + +/** + * Writes an error packet with the specified reason and advice. + * + * @param {Number} advice + * @param {Number} reason + * @api public + */ + +Transport.prototype.error = function (reason, advice) { + this.packet({ + type: 'error' + , reason: reason + , advice: advice + }); + + this.log.warn(reason, advice ? ('client should ' + advice) : ''); + this.end('error'); +}; + +/** + * Write a packet. + * + * @api public + */ + +Transport.prototype.packet = function (obj) { + return this.write(parser.encodePacket(obj)); +}; + +/** + * Writes a volatile message. + * + * @api private + */ + +Transport.prototype.writeVolatile = function (msg) { + if (this.open) { + if (this.drained) { + this.write(msg); + } else { + this.log.debug('ignoring volatile packet, buffer not drained'); + } + } else { + this.log.debug('ignoring volatile packet, transport not open'); + } +}; diff --git a/signaling-server/node_modules/socket.io/lib/transports/flashsocket.js b/signaling-server/node_modules/socket.io/lib/transports/flashsocket.js new file mode 100644 index 0000000..dc2d78b --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transports/flashsocket.js @@ -0,0 +1,129 @@ +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module requirements. + */ +var WebSocket = require('./websocket'); + +/** + * Export the constructor. + */ + +exports = module.exports = FlashSocket; + +/** + * The FlashSocket transport is just a proxy + * for WebSocket connections. + * + * @api public + */ + +function FlashSocket (mng, data, req) { + return WebSocket.call(this, mng, data, req); +} + +/** + * Inherits from WebSocket. + */ + +FlashSocket.prototype.__proto__ = WebSocket.prototype; + +/** + * Transport name + * + * @api public + */ + +FlashSocket.prototype.name = 'flashsocket'; + +/** + * Listens for new configuration changes of the Manager + * this way we can enable and disable the flash server. + * + * @param {Manager} Manager instance. + * @api private + */ + + +FlashSocket.init = function (manager) { + var server; + function create () { + + // Drop out immediately if the user has + // disabled the flash policy server + if (!manager.get('flash policy server')) { + return; + } + + server = require('policyfile').createServer({ + log: function(msg){ + manager.log.info(msg); + } + }, manager.get('origins')); + + server.on('close', function (e) { + server = null; + }); + + server.listen(manager.get('flash policy port'), manager.server); + + manager.flashPolicyServer = server; + } + + // listen for origin changes, so we can update the server + manager.on('set:origins', function (value, key) { + if (!server) return; + + // update the origins and compile a new response buffer + server.origins = Array.isArray(value) ? value : [value]; + server.compile(); + }); + + // destory the server and create a new server + manager.on('set:flash policy port', function (value, key) { + var transports = manager.get('transports'); + if (~transports.indexOf('flashsocket')) { + if (server) { + if (server.port === value) return; + // destroy the server and rebuild it on a new port + try { + server.close(); + } + catch (e) { /* ignore exception. could e.g. be that the server isn't started yet */ } + } + create(); + } + }); + + // create or destroy the server + manager.on('set:flash policy server', function (value, key) { + var transports = manager.get('transports'); + if (~transports.indexOf('flashsocket')) { + if (server && !value) { + // destroy the server + try { + server.close(); + } + catch (e) { /* ignore exception. could e.g. be that the server isn't started yet */ } + } + } else if (!server && value) { + // create the server + create(); + } + }); + + // only start the server + manager.on('set:transports', function (value, key){ + if (!server && ~manager.get('transports').indexOf('flashsocket')) { + create(); + } + }); + // check if we need to initialize at start + if (~manager.get('transports').indexOf('flashsocket')){ + create(); + } +}; diff --git a/signaling-server/node_modules/socket.io/lib/transports/htmlfile.js b/signaling-server/node_modules/socket.io/lib/transports/htmlfile.js new file mode 100644 index 0000000..fce0c0e --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transports/htmlfile.js @@ -0,0 +1,83 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module requirements. + */ + +var HTTPTransport = require('./http'); + +/** + * Export the constructor. + */ + +exports = module.exports = HTMLFile; + +/** + * HTMLFile transport constructor. + * + * @api public + */ + +function HTMLFile (mng, data, req) { + HTTPTransport.call(this, mng, data, req); +}; + +/** + * Inherits from Transport. + */ + +HTMLFile.prototype.__proto__ = HTTPTransport.prototype; + +/** + * Transport name + * + * @api public + */ + +HTMLFile.prototype.name = 'htmlfile'; + +/** + * Handles the request. + * + * @api private + */ + +HTMLFile.prototype.handleRequest = function (req) { + HTTPTransport.prototype.handleRequest.call(this, req); + + if (req.method == 'GET') { + req.res.writeHead(200, { + 'Content-Type': 'text/html; charset=UTF-8' + , 'Connection': 'keep-alive' + , 'Transfer-Encoding': 'chunked' + }); + + req.res.write( + '<html><body>' + + '<script>var _ = function (msg) { parent.s._(msg, document); };</script>' + + new Array(174).join(' ') + ); + } +}; + +/** + * Performs the write. + * + * @api private + */ + +HTMLFile.prototype.write = function (data) { + // escape all forward slashes. see GH-1251 + data = '<script>_(' + JSON.stringify(data).replace(/\//g, '\\/') + ');</script>'; + + if (this.response.write(data)) { + this.drained = true; + } + + this.log.debug(this.name + ' writing', data); +}; diff --git a/signaling-server/node_modules/socket.io/lib/transports/http-polling.js b/signaling-server/node_modules/socket.io/lib/transports/http-polling.js new file mode 100644 index 0000000..89b7e04 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transports/http-polling.js @@ -0,0 +1,147 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module requirements. + */ + +var HTTPTransport = require('./http'); + +/** + * Exports the constructor. + */ + +exports = module.exports = HTTPPolling; + +/** + * HTTP polling constructor. + * + * @api public. + */ + +function HTTPPolling (mng, data, req) { + HTTPTransport.call(this, mng, data, req); +}; + +/** + * Inherits from HTTPTransport. + * + * @api public. + */ + +HTTPPolling.prototype.__proto__ = HTTPTransport.prototype; + +/** + * Transport name + * + * @api public + */ + +HTTPPolling.prototype.name = 'httppolling'; + +/** + * Override setHandlers + * + * @api private + */ + +HTTPPolling.prototype.setHandlers = function () { + HTTPTransport.prototype.setHandlers.call(this); + this.socket.removeListener('end', this.bound.end); + this.socket.removeListener('close', this.bound.close); +}; + +/** + * Removes heartbeat timeouts for polling. + */ + +HTTPPolling.prototype.setHeartbeatInterval = function () { + return this; +}; + +/** + * Handles a request + * + * @api private + */ + +HTTPPolling.prototype.handleRequest = function (req) { + HTTPTransport.prototype.handleRequest.call(this, req); + + if (req.method == 'GET') { + var self = this; + + this.pollTimeout = setTimeout(function () { + self.packet({ type: 'noop' }); + self.log.debug(self.name + ' closed due to exceeded duration'); + }, this.manager.get('polling duration') * 1000); + + this.log.debug('setting poll timeout'); + } +}; + +/** + * Clears polling timeout + * + * @api private + */ + +HTTPPolling.prototype.clearPollTimeout = function () { + if (this.pollTimeout) { + clearTimeout(this.pollTimeout); + this.pollTimeout = null; + this.log.debug('clearing poll timeout'); + } + + return this; +}; + +/** + * Override clear timeouts to clear the poll timeout + * + * @api private + */ + +HTTPPolling.prototype.clearTimeouts = function () { + HTTPTransport.prototype.clearTimeouts.call(this); + + this.clearPollTimeout(); +}; + +/** + * doWrite to clear poll timeout + * + * @api private + */ + +HTTPPolling.prototype.doWrite = function () { + this.clearPollTimeout(); +}; + +/** + * Performs a write. + * + * @api private. + */ + +HTTPPolling.prototype.write = function (data, close) { + this.doWrite(data); + this.response.end(); + this.onClose(); +}; + +/** + * Override end. + * + * @api private + */ + +HTTPPolling.prototype.end = function (reason) { + this.clearPollTimeout(); + return HTTPTransport.prototype.end.call(this, reason); +}; + diff --git a/signaling-server/node_modules/socket.io/lib/transports/http.js b/signaling-server/node_modules/socket.io/lib/transports/http.js new file mode 100644 index 0000000..fa94b59 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transports/http.js @@ -0,0 +1,122 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module requirements. + */ + +var Transport = require('../transport') + , parser = require('../parser') + , qs = require('querystring'); + +/** + * Export the constructor. + */ + +exports = module.exports = HTTPTransport; + +/** + * HTTP interface constructor. For all non-websocket transports. + * + * @api public + */ + +function HTTPTransport (mng, data, req) { + Transport.call(this, mng, data, req); +}; + +/** + * Inherits from Transport. + */ + +HTTPTransport.prototype.__proto__ = Transport.prototype; + +/** + * Handles a request. + * + * @api private + */ + +HTTPTransport.prototype.handleRequest = function (req) { + + // Always set the response in case an error is returned to the client + this.response = req.res; + + if (req.method == 'POST') { + var buffer = '' + , res = req.res + , origin = req.headers.origin + , headers = { 'Content-Length': 1, 'Content-Type': 'text/plain; charset=UTF-8' } + , self = this; + + req.on('data', function (data) { + buffer += data; + + if (Buffer.byteLength(buffer) >= self.manager.get('destroy buffer size')) { + buffer = ''; + req.connection.destroy(); + } + }); + + req.on('end', function () { + res.writeHead(200, headers); + res.end('1'); + + self.onData(self.postEncoded ? qs.parse(buffer).d : buffer); + }); + + // prevent memory leaks for uncompleted requests + req.on('close', function () { + buffer = ''; + self.onClose(); + }); + + if (origin) { + // https://developer.mozilla.org/En/HTTP_Access_Control + headers['Access-Control-Allow-Origin'] = origin; + headers['Access-Control-Allow-Credentials'] = 'true'; + headers['X-XSS-Protection'] = '0'; + } + } else { + Transport.prototype.handleRequest.call(this, req); + } +}; + +/** + * Handles data payload. + * + * @api private + */ + +HTTPTransport.prototype.onData = function (data) { + var messages = parser.decodePayload(data); + this.log.debug(this.name + ' received data packet', data); + + for (var i = 0, l = messages.length; i < l; i++) { + this.onMessage(messages[i]); + } +}; + +/** + * Closes the request-response cycle + * + * @api private + */ + +HTTPTransport.prototype.doClose = function () { + this.response.end(); +}; + +/** + * Writes a payload of messages + * + * @api private + */ + +HTTPTransport.prototype.payload = function (msgs) { + this.write(parser.encodePayload(msgs)); +}; diff --git a/signaling-server/node_modules/socket.io/lib/transports/index.js b/signaling-server/node_modules/socket.io/lib/transports/index.js new file mode 100644 index 0000000..b865559 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transports/index.js @@ -0,0 +1,12 @@ + +/** + * Export transports. + */ + +module.exports = { + websocket: require('./websocket') + , flashsocket: require('./flashsocket') + , htmlfile: require('./htmlfile') + , 'xhr-polling': require('./xhr-polling') + , 'jsonp-polling': require('./jsonp-polling') +}; diff --git a/signaling-server/node_modules/socket.io/lib/transports/jsonp-polling.js b/signaling-server/node_modules/socket.io/lib/transports/jsonp-polling.js new file mode 100644 index 0000000..ad7d5af --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transports/jsonp-polling.js @@ -0,0 +1,97 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module requirements. + */ + +var HTTPPolling = require('./http-polling'); +var jsonpolling_re = /^\d+$/ + +/** + * Export the constructor. + */ + +exports = module.exports = JSONPPolling; + +/** + * JSON-P polling transport. + * + * @api public + */ + +function JSONPPolling (mng, data, req) { + HTTPPolling.call(this, mng, data, req); + + this.head = 'io.j[0]('; + this.foot = ');'; + + if (data.query.i && jsonpolling_re.test(data.query.i)) { + this.head = 'io.j[' + data.query.i + ']('; + } +}; + +/** + * Inherits from Transport. + */ + +JSONPPolling.prototype.__proto__ = HTTPPolling.prototype; + +/** + * Transport name + * + * @api public + */ + +JSONPPolling.prototype.name = 'jsonppolling'; + +/** + * Make sure POST are decoded. + */ + +JSONPPolling.prototype.postEncoded = true; + +/** + * Handles incoming data. + * Due to a bug in \n handling by browsers, we expect a JSONified string. + * + * @api private + */ + +JSONPPolling.prototype.onData = function (data) { + try { + data = JSON.parse(data); + } catch (e) { + this.error('parse', 'reconnect'); + return; + } + + HTTPPolling.prototype.onData.call(this, data); +}; + +/** + * Performs the write. + * + * @api private + */ + +JSONPPolling.prototype.doWrite = function (data) { + HTTPPolling.prototype.doWrite.call(this); + + var data = data === undefined + ? '' : this.head + JSON.stringify(data) + this.foot; + + this.response.writeHead(200, { + 'Content-Type': 'text/javascript; charset=UTF-8' + , 'Content-Length': Buffer.byteLength(data) + , 'Connection': 'Keep-Alive' + , 'X-XSS-Protection': '0' + }); + + this.response.write(data); + this.log.debug(this.name + ' writing', data); +}; diff --git a/signaling-server/node_modules/socket.io/lib/transports/websocket.js b/signaling-server/node_modules/socket.io/lib/transports/websocket.js new file mode 100644 index 0000000..78a4304 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transports/websocket.js @@ -0,0 +1,36 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module requirements. + */ + +var protocolVersions = require('./websocket/'); + +/** + * Export the constructor. + */ + +exports = module.exports = WebSocket; + +/** + * HTTP interface constructor. Interface compatible with all transports that + * depend on request-response cycles. + * + * @api public + */ + +function WebSocket (mng, data, req) { + var transport + , version = req.headers['sec-websocket-version']; + if (typeof version !== 'undefined' && typeof protocolVersions[version] !== 'undefined') { + transport = new protocolVersions[version](mng, data, req); + } + else transport = new protocolVersions['default'](mng, data, req); + if (typeof this.name !== 'undefined') transport.name = this.name; + return transport; +}; diff --git a/signaling-server/node_modules/socket.io/lib/transports/websocket/default.js b/signaling-server/node_modules/socket.io/lib/transports/websocket/default.js new file mode 100644 index 0000000..cf3b8af --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transports/websocket/default.js @@ -0,0 +1,376 @@ +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module requirements. + */ + +var Transport = require('../../transport') + , EventEmitter = process.EventEmitter + , crypto = require('crypto') + , parser = require('../../parser'); + +/** + * Export the constructor. + */ + +exports = module.exports = WebSocket; + +/** + * HTTP interface constructor. Interface compatible with all transports that + * depend on request-response cycles. + * + * @api public + */ + +function WebSocket (mng, data, req) { + // parser + var self = this; + + this.parser = new Parser({maxBuffer: mng.get('destroy buffer size')}); + this.parser.on('data', function (packet) { + self.log.debug(self.name + ' received data packet', packet); + self.onMessage(parser.decodePacket(packet)); + }); + this.parser.on('close', function () { + self.end(); + }); + this.parser.on('error', function () { + self.end(); + }); + this.parser.on('kick', function (reason) { + self.log.warn(self.name + ' parser forced user kick: ' + reason); + self.onMessage({type: 'disconnect', endpoint: ''}); + self.end(); + }); + + Transport.call(this, mng, data, req); +}; + +/** + * Inherits from Transport. + */ + +WebSocket.prototype.__proto__ = Transport.prototype; + +/** + * Transport name + * + * @api public + */ + +WebSocket.prototype.name = 'websocket'; + +/** + * Websocket draft version + * + * @api public + */ + +WebSocket.prototype.protocolVersion = 'hixie-76'; + +/** + * Called when the socket connects. + * + * @api private + */ + +WebSocket.prototype.onSocketConnect = function () { + var self = this; + + this.socket.setNoDelay(true); + + this.buffer = true; + this.buffered = []; + + if (this.req.headers.upgrade !== 'WebSocket') { + this.log.warn(this.name + ' connection invalid'); + this.end(); + return; + } + + var origin = this.req.headers['origin'] + , waitingForNonce = false; + if(this.manager.settings['match origin protocol']){ + location = (origin.indexOf('https')>-1 ? 'wss' : 'ws') + '://' + this.req.headers.host + this.req.url; + }else if(this.socket.encrypted){ + location = 'wss://' + this.req.headers.host + this.req.url; + }else{ + location = 'ws://' + this.req.headers.host + this.req.url; + } + + if (this.req.headers['sec-websocket-key1']) { + // If we don't have the nonce yet, wait for it (HAProxy compatibility). + if (! (this.req.head && this.req.head.length >= 8)) { + waitingForNonce = true; + } + + var headers = [ + 'HTTP/1.1 101 WebSocket Protocol Handshake' + , 'Upgrade: WebSocket' + , 'Connection: Upgrade' + , 'Sec-WebSocket-Origin: ' + origin + , 'Sec-WebSocket-Location: ' + location + ]; + + if (this.req.headers['sec-websocket-protocol']){ + headers.push('Sec-WebSocket-Protocol: ' + + this.req.headers['sec-websocket-protocol']); + } + } else { + var headers = [ + 'HTTP/1.1 101 Web Socket Protocol Handshake' + , 'Upgrade: WebSocket' + , 'Connection: Upgrade' + , 'WebSocket-Origin: ' + origin + , 'WebSocket-Location: ' + location + ]; + } + + try { + this.socket.write(headers.concat('', '').join('\r\n')); + this.socket.setTimeout(0); + this.socket.setNoDelay(true); + this.socket.setEncoding('utf8'); + } catch (e) { + this.end(); + return; + } + + if (waitingForNonce) { + this.socket.setEncoding('binary'); + } else if (this.proveReception(headers)) { + self.flush(); + } + + var headBuffer = ''; + + this.socket.on('data', function (data) { + if (waitingForNonce) { + headBuffer += data; + + if (headBuffer.length < 8) { + return; + } + + // Restore the connection to utf8 encoding after receiving the nonce + self.socket.setEncoding('utf8'); + waitingForNonce = false; + + // Stuff the nonce into the location where it's expected to be + self.req.head = headBuffer.substr(0, 8); + headBuffer = ''; + + if (self.proveReception(headers)) { + self.flush(); + } + + return; + } + + self.parser.add(data); + }); +}; + +/** + * Writes to the socket. + * + * @api private + */ + +WebSocket.prototype.write = function (data) { + if (this.open) { + this.drained = false; + + if (this.buffer) { + this.buffered.push(data); + return this; + } + + var length = Buffer.byteLength(data) + , buffer = new Buffer(2 + length); + + buffer.write('\x00', 'binary'); + buffer.write(data, 1, 'utf8'); + buffer.write('\xff', 1 + length, 'binary'); + + try { + if (this.socket.write(buffer)) { + this.drained = true; + } + } catch (e) { + this.end(); + } + + this.log.debug(this.name + ' writing', data); + } +}; + +/** + * Flushes the internal buffer + * + * @api private + */ + +WebSocket.prototype.flush = function () { + this.buffer = false; + + for (var i = 0, l = this.buffered.length; i < l; i++) { + this.write(this.buffered.splice(0, 1)[0]); + } +}; + +/** + * Finishes the handshake. + * + * @api private + */ + +WebSocket.prototype.proveReception = function (headers) { + var self = this + , k1 = this.req.headers['sec-websocket-key1'] + , k2 = this.req.headers['sec-websocket-key2']; + + if (k1 && k2){ + var md5 = crypto.createHash('md5'); + + [k1, k2].forEach(function (k) { + var n = parseInt(k.replace(/[^\d]/g, '')) + , spaces = k.replace(/[^ ]/g, '').length; + + if (spaces === 0 || n % spaces !== 0){ + self.log.warn('Invalid ' + self.name + ' key: "' + k + '".'); + self.end(); + return false; + } + + n /= spaces; + + md5.update(String.fromCharCode( + n >> 24 & 0xFF, + n >> 16 & 0xFF, + n >> 8 & 0xFF, + n & 0xFF)); + }); + + md5.update(this.req.head.toString('binary')); + + try { + this.socket.write(md5.digest('binary'), 'binary'); + } catch (e) { + this.end(); + } + } + + return true; +}; + +/** + * Writes a payload. + * + * @api private + */ + +WebSocket.prototype.payload = function (msgs) { + for (var i = 0, l = msgs.length; i < l; i++) { + this.write(msgs[i]); + } + + return this; +}; + +/** + * Closes the connection. + * + * @api private + */ + +WebSocket.prototype.doClose = function () { + this.socket.end(); +}; + +/** + * WebSocket parser + * + * @api public + */ + +function Parser (opts) { + this._maxBuffer = (opts && opts.maxBuffer) || 10E7; + this._dataLength = 0; + this.buffer = ''; + this.i = 0; +}; + +/** + * Inherits from EventEmitter. + */ + +Parser.prototype.__proto__ = EventEmitter.prototype; + +/** + * Adds data to the buffer. + * + * @api public + */ + +Parser.prototype.add = function (data) { + this._dataLength += data.length; + if(this._dataLength > this._maxBuffer) { + this.buffer = ''; //Clear buffer + this.emit('kick', 'max buffer size reached'); + return; + } + + this.buffer += data; + this.parse(); +}; + +/** + * Parses the buffer. + * + * @api private + */ + +Parser.prototype.parse = function () { + for (var i = this.i, chr, l = this.buffer.length; i < l; i++){ + chr = this.buffer[i]; + + if (this.buffer.length == 2 && this.buffer[1] == '\u0000') { + this.emit('close'); + this.buffer = ''; + this.i = 0; + return; + } + + if (i === 0){ + if (chr != '\u0000') + this.error('Bad framing. Expected null byte as first frame'); + else + continue; + } + + if (chr == '\ufffd'){ + this.emit('data', this.buffer.substr(1, i - 1)); + this.buffer = this.buffer.substr(i + 1); + this.i = 0; + return this.parse(); + } + } +}; + +/** + * Handles an error + * + * @api private + */ + +Parser.prototype.error = function (reason) { + this.buffer = ''; + this.i = 0; + this.emit('error', reason); + return this; +}; diff --git a/signaling-server/node_modules/socket.io/lib/transports/websocket/hybi-07-12.js b/signaling-server/node_modules/socket.io/lib/transports/websocket/hybi-07-12.js new file mode 100644 index 0000000..8f0759d --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transports/websocket/hybi-07-12.js @@ -0,0 +1,642 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module requirements. + */ + +var Transport = require('../../transport') + , EventEmitter = process.EventEmitter + , crypto = require('crypto') + , url = require('url') + , parser = require('../../parser') + , util = require('../../util'); + +/** + * Export the constructor. + */ + +exports = module.exports = WebSocket; +exports.Parser = Parser; + +/** + * HTTP interface constructor. Interface compatible with all transports that + * depend on request-response cycles. + * + * @api public + */ + +function WebSocket (mng, data, req) { + // parser + var self = this; + + this.manager = mng; + this.parser = new Parser({maxBuffer: mng.get('destroy buffer size')}); + this.parser.on('data', function (packet) { + self.onMessage(parser.decodePacket(packet)); + }); + this.parser.on('ping', function () { + // version 8 ping => pong + try { + self.socket.write('\u008a\u0000'); + } + catch (e) { + self.end(); + return; + } + }); + this.parser.on('close', function () { + self.end(); + }); + this.parser.on('error', function (reason) { + self.log.warn(self.name + ' parser error: ' + reason); + self.end(); + }); + this.parser.on('kick', function (reason) { + self.log.warn(self.name + ' parser forced user kick: ' + reason); + self.onMessage({type: 'disconnect', endpoint: ''}); + self.end(); + }); + + Transport.call(this, mng, data, req); +}; + +/** + * Inherits from Transport. + */ + +WebSocket.prototype.__proto__ = Transport.prototype; + +/** + * Transport name + * + * @api public + */ + +WebSocket.prototype.name = 'websocket'; + +/** + * Websocket draft version + * + * @api public + */ + +WebSocket.prototype.protocolVersion = '07-12'; + +/** + * Called when the socket connects. + * + * @api private + */ + +WebSocket.prototype.onSocketConnect = function () { + var self = this; + + if (typeof this.req.headers.upgrade === 'undefined' || + this.req.headers.upgrade.toLowerCase() !== 'websocket') { + this.log.warn(this.name + ' connection invalid'); + this.end(); + return; + } + + var origin = this.req.headers['sec-websocket-origin'] + , location = ((this.manager.settings['match origin protocol'] ? + origin.match(/^https/) : this.socket.encrypted) ? + 'wss' : 'ws') + + '://' + this.req.headers.host + this.req.url; + + if (!this.verifyOrigin(origin)) { + this.log.warn(this.name + ' connection invalid: origin mismatch'); + this.end(); + return; + } + + if (!this.req.headers['sec-websocket-key']) { + this.log.warn(this.name + ' connection invalid: received no key'); + this.end(); + return; + } + + // calc key + var key = this.req.headers['sec-websocket-key']; + var shasum = crypto.createHash('sha1'); + shasum.update(key + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"); + key = shasum.digest('base64'); + + var headers = [ + 'HTTP/1.1 101 Switching Protocols' + , 'Upgrade: websocket' + , 'Connection: Upgrade' + , 'Sec-WebSocket-Accept: ' + key + ]; + + try { + this.socket.write(headers.concat('', '').join('\r\n')); + this.socket.setTimeout(0); + this.socket.setNoDelay(true); + } catch (e) { + this.end(); + return; + } + + this.socket.on('data', function (data) { + self.parser.add(data); + }); +}; + +/** + * Verifies the origin of a request. + * + * @api private + */ + +WebSocket.prototype.verifyOrigin = function (origin) { + var origins = this.manager.get('origins'); + + if (origin === 'null') origin = '*'; + + if (origins.indexOf('*:*') !== -1) { + return true; + } + + if (origin) { + try { + var parts = url.parse(origin); + parts.port = parts.port || 80; + var ok = + ~origins.indexOf(parts.hostname + ':' + parts.port) || + ~origins.indexOf(parts.hostname + ':*') || + ~origins.indexOf('*:' + parts.port); + if (!ok) this.log.warn('illegal origin: ' + origin); + return ok; + } catch (ex) { + this.log.warn('error parsing origin'); + } + } + else { + this.log.warn('origin missing from websocket call, yet required by config'); + } + return false; +}; + +/** + * Writes to the socket. + * + * @api private + */ + +WebSocket.prototype.write = function (data) { + if (this.open) { + var buf = this.frame(0x81, data); + try { + this.socket.write(buf, 'binary'); + } + catch (e) { + this.end(); + return; + } + this.log.debug(this.name + ' writing', data); + } +}; + +/** + * Writes a payload. + * + * @api private + */ + +WebSocket.prototype.payload = function (msgs) { + for (var i = 0, l = msgs.length; i < l; i++) { + this.write(msgs[i]); + } + + return this; +}; + +/** + * Frame server-to-client output as a text packet. + * + * @api private + */ + +WebSocket.prototype.frame = function (opcode, str) { + var dataBuffer = new Buffer(str) + , dataLength = dataBuffer.length + , startOffset = 2 + , secondByte = dataLength; + if (dataLength > 65536) { + startOffset = 10; + secondByte = 127; + } + else if (dataLength > 125) { + startOffset = 4; + secondByte = 126; + } + var outputBuffer = new Buffer(dataLength + startOffset); + outputBuffer[0] = opcode; + outputBuffer[1] = secondByte; + dataBuffer.copy(outputBuffer, startOffset); + switch (secondByte) { + case 126: + outputBuffer[2] = dataLength >>> 8; + outputBuffer[3] = dataLength % 256; + break; + case 127: + var l = dataLength; + for (var i = 1; i <= 8; ++i) { + outputBuffer[startOffset - i] = l & 0xff; + l >>>= 8; + } + } + return outputBuffer; +}; + +/** + * Closes the connection. + * + * @api private + */ + +WebSocket.prototype.doClose = function () { + this.socket.end(); +}; + +/** + * WebSocket parser + * + * @api public + */ + +function Parser (opts) { + this.state = { + activeFragmentedOperation: null, + lastFragment: false, + masked: false, + opcode: 0 + }; + this.overflow = null; + this.expectOffset = 0; + this.expectBuffer = null; + this.expectHandler = null; + this.currentMessage = ''; + this._maxBuffer = (opts && opts.maxBuffer) || 10E7; + this._dataLength = 0; + + var self = this; + this.opcodeHandlers = { + // text + '1': function(data) { + var finish = function(mask, data) { + self.currentMessage += self.unmask(mask, data); + if (self.state.lastFragment) { + self.emit('data', self.currentMessage); + self.currentMessage = ''; + } + self.endPacket(); + } + + var expectData = function(length) { + if (self.state.masked) { + self.expect('Mask', 4, function(data) { + var mask = data; + self.expect('Data', length, function(data) { + finish(mask, data); + }); + }); + } + else { + self.expect('Data', length, function(data) { + finish(null, data); + }); + } + } + + // decode length + var firstLength = data[1] & 0x7f; + if (firstLength < 126) { + expectData(firstLength); + } + else if (firstLength == 126) { + self.expect('Length', 2, function(data) { + expectData(util.unpack(data)); + }); + } + else if (firstLength == 127) { + self.expect('Length', 8, function(data) { + if (util.unpack(data.slice(0, 4)) != 0) { + self.error('packets with length spanning more than 32 bit is currently not supported'); + return; + } + var lengthBytes = data.slice(4); // note: cap to 32 bit length + expectData(util.unpack(data)); + }); + } + }, + // binary + '2': function(data) { + var finish = function(mask, data) { + if (typeof self.currentMessage == 'string') self.currentMessage = []; // build a buffer list + self.currentMessage.push(self.unmask(mask, data, true)); + if (self.state.lastFragment) { + self.emit('binary', self.concatBuffers(self.currentMessage)); + self.currentMessage = ''; + } + self.endPacket(); + } + + var expectData = function(length) { + if (self.state.masked) { + self.expect('Mask', 4, function(data) { + var mask = data; + self.expect('Data', length, function(data) { + finish(mask, data); + }); + }); + } + else { + self.expect('Data', length, function(data) { + finish(null, data); + }); + } + } + + // decode length + var firstLength = data[1] & 0x7f; + if (firstLength < 126) { + expectData(firstLength); + } + else if (firstLength == 126) { + self.expect('Length', 2, function(data) { + expectData(util.unpack(data)); + }); + } + else if (firstLength == 127) { + self.expect('Length', 8, function(data) { + if (util.unpack(data.slice(0, 4)) != 0) { + self.error('packets with length spanning more than 32 bit is currently not supported'); + return; + } + var lengthBytes = data.slice(4); // note: cap to 32 bit length + expectData(util.unpack(data)); + }); + } + }, + // close + '8': function(data) { + self.emit('close'); + self.reset(); + }, + // ping + '9': function(data) { + if (self.state.lastFragment == false) { + self.error('fragmented ping is not supported'); + return; + } + + var finish = function(mask, data) { + self.emit('ping', self.unmask(mask, data)); + self.endPacket(); + } + + var expectData = function(length) { + if (self.state.masked) { + self.expect('Mask', 4, function(data) { + var mask = data; + self.expect('Data', length, function(data) { + finish(mask, data); + }); + }); + } + else { + self.expect('Data', length, function(data) { + finish(null, data); + }); + } + } + + // decode length + var firstLength = data[1] & 0x7f; + if (firstLength == 0) { + finish(null, null); + } + else if (firstLength < 126) { + expectData(firstLength); + } + else if (firstLength == 126) { + self.expect('Length', 2, function(data) { + expectData(util.unpack(data)); + }); + } + else if (firstLength == 127) { + self.expect('Length', 8, function(data) { + expectData(util.unpack(data)); + }); + } + } + } + + this.expect('Opcode', 2, this.processPacket); +}; + +/** + * Inherits from EventEmitter. + */ + +Parser.prototype.__proto__ = EventEmitter.prototype; + +/** + * Add new data to the parser. + * + * @api public + */ + +Parser.prototype.add = function(data) { + this._dataLength += data.length; + if (this._dataLength > this._maxBuffer) { + // Clear data + this.overflow = null; + this.expectBuffer = null; + // Kick client + this.emit('kick', 'max buffer size reached'); + return; + } + if (this.expectBuffer == null) { + this.addToOverflow(data); + return; + } + var toRead = Math.min(data.length, this.expectBuffer.length - this.expectOffset); + data.copy(this.expectBuffer, this.expectOffset, 0, toRead); + this.expectOffset += toRead; + if (toRead < data.length) { + // at this point the overflow buffer shouldn't at all exist + this.overflow = new Buffer(data.length - toRead); + data.copy(this.overflow, 0, toRead, toRead + this.overflow.length); + } + if (this.expectOffset == this.expectBuffer.length) { + var bufferForHandler = this.expectBuffer; + this.expectBuffer = null; + this.expectOffset = 0; + this.expectHandler.call(this, bufferForHandler); + } +} + +/** + * Adds a piece of data to the overflow. + * + * @api private + */ + +Parser.prototype.addToOverflow = function(data) { + if (this.overflow == null) this.overflow = data; + else { + var prevOverflow = this.overflow; + this.overflow = new Buffer(this.overflow.length + data.length); + prevOverflow.copy(this.overflow, 0); + data.copy(this.overflow, prevOverflow.length); + } +} + +/** + * Waits for a certain amount of bytes to be available, then fires a callback. + * + * @api private + */ + +Parser.prototype.expect = function(what, length, handler) { + if (length > this._maxBuffer) { + this.emit('kick', 'expected input larger than max buffer'); + return; + } + this.expectBuffer = new Buffer(length); + this.expectOffset = 0; + this.expectHandler = handler; + if (this.overflow != null) { + var toOverflow = this.overflow; + this.overflow = null; + this.add(toOverflow); + } +} + +/** + * Start processing a new packet. + * + * @api private + */ + +Parser.prototype.processPacket = function (data) { + if ((data[0] & 0x70) != 0) { + this.error('reserved fields must be empty'); + } + this.state.lastFragment = (data[0] & 0x80) == 0x80; + this.state.masked = (data[1] & 0x80) == 0x80; + var opcode = data[0] & 0xf; + if (opcode == 0) { + // continuation frame + this.state.opcode = this.state.activeFragmentedOperation; + if (!(this.state.opcode == 1 || this.state.opcode == 2)) { + this.error('continuation frame cannot follow current opcode') + return; + } + } + else { + this.state.opcode = opcode; + if (this.state.lastFragment === false) { + this.state.activeFragmentedOperation = opcode; + } + } + var handler = this.opcodeHandlers[this.state.opcode]; + if (typeof handler == 'undefined') this.error('no handler for opcode ' + this.state.opcode); + else handler(data); +} + +/** + * Endprocessing a packet. + * + * @api private + */ + +Parser.prototype.endPacket = function() { + this.expectOffset = 0; + this.expectBuffer = null; + this.expectHandler = null; + if (this.state.lastFragment && this.state.opcode == this.state.activeFragmentedOperation) { + // end current fragmented operation + this.state.activeFragmentedOperation = null; + } + this.state.lastFragment = false; + this.state.opcode = this.state.activeFragmentedOperation != null ? this.state.activeFragmentedOperation : 0; + this.state.masked = false; + this.expect('Opcode', 2, this.processPacket); +} + +/** + * Reset the parser state. + * + * @api private + */ + +Parser.prototype.reset = function() { + this.state = { + activeFragmentedOperation: null, + lastFragment: false, + masked: false, + opcode: 0 + }; + this.expectOffset = 0; + this.expectBuffer = null; + this.expectHandler = null; + this.overflow = null; + this.currentMessage = ''; +} + +/** + * Unmask received data. + * + * @api private + */ + +Parser.prototype.unmask = function (mask, buf, binary) { + if (mask != null) { + for (var i = 0, ll = buf.length; i < ll; i++) { + buf[i] ^= mask[i % 4]; + } + } + if (binary) return buf; + return buf != null ? buf.toString('utf8') : ''; +} + +/** + * Concatenates a list of buffers. + * + * @api private + */ + +Parser.prototype.concatBuffers = function(buffers) { + var length = 0; + for (var i = 0, l = buffers.length; i < l; ++i) { + length += buffers[i].length; + } + var mergedBuffer = new Buffer(length); + var offset = 0; + for (var i = 0, l = buffers.length; i < l; ++i) { + buffers[i].copy(mergedBuffer, offset); + offset += buffers[i].length; + } + return mergedBuffer; +} + +/** + * Handles an error + * + * @api private + */ + +Parser.prototype.error = function (reason) { + this.reset(); + this.emit('error', reason); + return this; +}; diff --git a/signaling-server/node_modules/socket.io/lib/transports/websocket/hybi-16.js b/signaling-server/node_modules/socket.io/lib/transports/websocket/hybi-16.js new file mode 100644 index 0000000..2074fa1 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transports/websocket/hybi-16.js @@ -0,0 +1,642 @@ +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module requirements. + */ + +var Transport = require('../../transport') + , EventEmitter = process.EventEmitter + , crypto = require('crypto') + , url = require('url') + , parser = require('../../parser') + , util = require('../../util'); + +/** + * Export the constructor. + */ + +exports = module.exports = WebSocket; +exports.Parser = Parser; + +/** + * HTTP interface constructor. Interface compatible with all transports that + * depend on request-response cycles. + * + * @api public + */ + +function WebSocket (mng, data, req) { + // parser + var self = this; + + this.manager = mng; + this.parser = new Parser({maxBuffer: mng.get('destroy buffer size')}); + this.parser.on('data', function (packet) { + self.onMessage(parser.decodePacket(packet)); + }); + this.parser.on('ping', function () { + // version 8 ping => pong + try { + self.socket.write('\u008a\u0000'); + } + catch (e) { + self.end(); + return; + } + }); + this.parser.on('close', function () { + self.end(); + }); + this.parser.on('error', function (reason) { + self.log.warn(self.name + ' parser error: ' + reason); + self.end(); + }); + this.parser.on('kick', function (reason) { + self.log.warn(self.name + ' parser forced user kick: ' + reason); + self.onMessage({type: 'disconnect', endpoint: ''}); + self.end(); + }); + + Transport.call(this, mng, data, req); +}; + +/** + * Inherits from Transport. + */ + +WebSocket.prototype.__proto__ = Transport.prototype; + +/** + * Transport name + * + * @api public + */ + +WebSocket.prototype.name = 'websocket'; + +/** + * Websocket draft version + * + * @api public + */ + +WebSocket.prototype.protocolVersion = '16'; + +/** + * Called when the socket connects. + * + * @api private + */ + +WebSocket.prototype.onSocketConnect = function () { + var self = this; + + if (typeof this.req.headers.upgrade === 'undefined' || + this.req.headers.upgrade.toLowerCase() !== 'websocket') { + this.log.warn(this.name + ' connection invalid'); + this.end(); + return; + } + + var origin = this.req.headers['origin'] || '' + , location = ((this.manager.settings['match origin protocol'] ? + origin.match(/^https/) : this.socket.encrypted) ? + 'wss' : 'ws') + + '://' + this.req.headers.host + this.req.url; + + if (!this.verifyOrigin(origin)) { + this.log.warn(this.name + ' connection invalid: origin mismatch'); + this.end(); + return; + } + + if (!this.req.headers['sec-websocket-key']) { + this.log.warn(this.name + ' connection invalid: received no key'); + this.end(); + return; + } + + // calc key + var key = this.req.headers['sec-websocket-key']; + var shasum = crypto.createHash('sha1'); + shasum.update(key + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"); + key = shasum.digest('base64'); + + var headers = [ + 'HTTP/1.1 101 Switching Protocols' + , 'Upgrade: websocket' + , 'Connection: Upgrade' + , 'Sec-WebSocket-Accept: ' + key + ]; + + try { + this.socket.write(headers.concat('', '').join('\r\n')); + this.socket.setTimeout(0); + this.socket.setNoDelay(true); + } catch (e) { + this.end(); + return; + } + + this.socket.on('data', function (data) { + self.parser.add(data); + }); +}; + +/** + * Verifies the origin of a request. + * + * @api private + */ + +WebSocket.prototype.verifyOrigin = function (origin) { + var origins = this.manager.get('origins'); + + if (origin === 'null') origin = '*'; + + if (origins.indexOf('*:*') !== -1) { + return true; + } + + if (origin) { + try { + var parts = url.parse(origin); + parts.port = parts.port || 80; + var ok = + ~origins.indexOf(parts.hostname + ':' + parts.port) || + ~origins.indexOf(parts.hostname + ':*') || + ~origins.indexOf('*:' + parts.port); + if (!ok) this.log.warn('illegal origin: ' + origin); + return ok; + } catch (ex) { + this.log.warn('error parsing origin'); + } + } + else { + this.log.warn('origin missing from websocket call, yet required by config'); + } + return false; +}; + +/** + * Writes to the socket. + * + * @api private + */ + +WebSocket.prototype.write = function (data) { + if (this.open) { + var buf = this.frame(0x81, data); + try { + this.socket.write(buf, 'binary'); + } + catch (e) { + this.end(); + return; + } + this.log.debug(this.name + ' writing', data); + } +}; + +/** + * Writes a payload. + * + * @api private + */ + +WebSocket.prototype.payload = function (msgs) { + for (var i = 0, l = msgs.length; i < l; i++) { + this.write(msgs[i]); + } + + return this; +}; + +/** + * Frame server-to-client output as a text packet. + * + * @api private + */ + +WebSocket.prototype.frame = function (opcode, str) { + var dataBuffer = new Buffer(str) + , dataLength = dataBuffer.length + , startOffset = 2 + , secondByte = dataLength; + if (dataLength > 65536) { + startOffset = 10; + secondByte = 127; + } + else if (dataLength > 125) { + startOffset = 4; + secondByte = 126; + } + var outputBuffer = new Buffer(dataLength + startOffset); + outputBuffer[0] = opcode; + outputBuffer[1] = secondByte; + dataBuffer.copy(outputBuffer, startOffset); + switch (secondByte) { + case 126: + outputBuffer[2] = dataLength >>> 8; + outputBuffer[3] = dataLength % 256; + break; + case 127: + var l = dataLength; + for (var i = 1; i <= 8; ++i) { + outputBuffer[startOffset - i] = l & 0xff; + l >>>= 8; + } + } + return outputBuffer; +}; + +/** + * Closes the connection. + * + * @api private + */ + +WebSocket.prototype.doClose = function () { + this.socket.end(); +}; + +/** + * WebSocket parser + * + * @api public + */ + +function Parser (opts) { + this.state = { + activeFragmentedOperation: null, + lastFragment: false, + masked: false, + opcode: 0 + }; + this.overflow = null; + this.expectOffset = 0; + this.expectBuffer = null; + this.expectHandler = null; + this.currentMessage = ''; + this._maxBuffer = (opts && opts.maxBuffer) || 10E7; + this._dataLength = 0; + + var self = this; + this.opcodeHandlers = { + // text + '1': function(data) { + var finish = function(mask, data) { + self.currentMessage += self.unmask(mask, data); + if (self.state.lastFragment) { + self.emit('data', self.currentMessage); + self.currentMessage = ''; + } + self.endPacket(); + } + + var expectData = function(length) { + if (self.state.masked) { + self.expect('Mask', 4, function(data) { + var mask = data; + self.expect('Data', length, function(data) { + finish(mask, data); + }); + }); + } + else { + self.expect('Data', length, function(data) { + finish(null, data); + }); + } + } + + // decode length + var firstLength = data[1] & 0x7f; + if (firstLength < 126) { + expectData(firstLength); + } + else if (firstLength == 126) { + self.expect('Length', 2, function(data) { + expectData(util.unpack(data)); + }); + } + else if (firstLength == 127) { + self.expect('Length', 8, function(data) { + if (util.unpack(data.slice(0, 4)) != 0) { + self.error('packets with length spanning more than 32 bit is currently not supported'); + return; + } + var lengthBytes = data.slice(4); // note: cap to 32 bit length + expectData(util.unpack(data)); + }); + } + }, + // binary + '2': function(data) { + var finish = function(mask, data) { + if (typeof self.currentMessage == 'string') self.currentMessage = []; // build a buffer list + self.currentMessage.push(self.unmask(mask, data, true)); + if (self.state.lastFragment) { + self.emit('binary', self.concatBuffers(self.currentMessage)); + self.currentMessage = ''; + } + self.endPacket(); + } + + var expectData = function(length) { + if (self.state.masked) { + self.expect('Mask', 4, function(data) { + var mask = data; + self.expect('Data', length, function(data) { + finish(mask, data); + }); + }); + } + else { + self.expect('Data', length, function(data) { + finish(null, data); + }); + } + } + + // decode length + var firstLength = data[1] & 0x7f; + if (firstLength < 126) { + expectData(firstLength); + } + else if (firstLength == 126) { + self.expect('Length', 2, function(data) { + expectData(util.unpack(data)); + }); + } + else if (firstLength == 127) { + self.expect('Length', 8, function(data) { + if (util.unpack(data.slice(0, 4)) != 0) { + self.error('packets with length spanning more than 32 bit is currently not supported'); + return; + } + var lengthBytes = data.slice(4); // note: cap to 32 bit length + expectData(util.unpack(data)); + }); + } + }, + // close + '8': function(data) { + self.emit('close'); + self.reset(); + }, + // ping + '9': function(data) { + if (self.state.lastFragment == false) { + self.error('fragmented ping is not supported'); + return; + } + + var finish = function(mask, data) { + self.emit('ping', self.unmask(mask, data)); + self.endPacket(); + } + + var expectData = function(length) { + if (self.state.masked) { + self.expect('Mask', 4, function(data) { + var mask = data; + self.expect('Data', length, function(data) { + finish(mask, data); + }); + }); + } + else { + self.expect('Data', length, function(data) { + finish(null, data); + }); + } + } + + // decode length + var firstLength = data[1] & 0x7f; + if (firstLength == 0) { + finish(null, null); + } + else if (firstLength < 126) { + expectData(firstLength); + } + else if (firstLength == 126) { + self.expect('Length', 2, function(data) { + expectData(util.unpack(data)); + }); + } + else if (firstLength == 127) { + self.expect('Length', 8, function(data) { + expectData(util.unpack(data)); + }); + } + } + } + + this.expect('Opcode', 2, this.processPacket); +}; + +/** + * Inherits from EventEmitter. + */ + +Parser.prototype.__proto__ = EventEmitter.prototype; + +/** + * Add new data to the parser. + * + * @api public + */ + +Parser.prototype.add = function(data) { + this._dataLength += data.length; + if (this._dataLength > this._maxBuffer) { + // Clear data + this.overflow = null; + this.expectBuffer = null; + // Kick client + this.emit('kick', 'max buffer size reached'); + return; + } + if (this.expectBuffer == null) { + this.addToOverflow(data); + return; + } + var toRead = Math.min(data.length, this.expectBuffer.length - this.expectOffset); + data.copy(this.expectBuffer, this.expectOffset, 0, toRead); + this.expectOffset += toRead; + if (toRead < data.length) { + // at this point the overflow buffer shouldn't at all exist + this.overflow = new Buffer(data.length - toRead); + data.copy(this.overflow, 0, toRead, toRead + this.overflow.length); + } + if (this.expectOffset == this.expectBuffer.length) { + var bufferForHandler = this.expectBuffer; + this.expectBuffer = null; + this.expectOffset = 0; + this.expectHandler.call(this, bufferForHandler); + } +} + +/** + * Adds a piece of data to the overflow. + * + * @api private + */ + +Parser.prototype.addToOverflow = function(data) { + if (this.overflow == null) this.overflow = data; + else { + var prevOverflow = this.overflow; + this.overflow = new Buffer(this.overflow.length + data.length); + prevOverflow.copy(this.overflow, 0); + data.copy(this.overflow, prevOverflow.length); + } +} + +/** + * Waits for a certain amount of bytes to be available, then fires a callback. + * + * @api private + */ + +Parser.prototype.expect = function(what, length, handler) { + if (length > this._maxBuffer) { + this.emit('kick', 'expected input larger than max buffer'); + return; + } + this.expectBuffer = new Buffer(length); + this.expectOffset = 0; + this.expectHandler = handler; + if (this.overflow != null) { + var toOverflow = this.overflow; + this.overflow = null; + this.add(toOverflow); + } +} + +/** + * Start processing a new packet. + * + * @api private + */ + +Parser.prototype.processPacket = function (data) { + if ((data[0] & 0x70) != 0) { + this.error('reserved fields must be empty'); + return; + } + this.state.lastFragment = (data[0] & 0x80) == 0x80; + this.state.masked = (data[1] & 0x80) == 0x80; + var opcode = data[0] & 0xf; + if (opcode == 0) { + // continuation frame + this.state.opcode = this.state.activeFragmentedOperation; + if (!(this.state.opcode == 1 || this.state.opcode == 2)) { + this.error('continuation frame cannot follow current opcode') + return; + } + } + else { + this.state.opcode = opcode; + if (this.state.lastFragment === false) { + this.state.activeFragmentedOperation = opcode; + } + } + var handler = this.opcodeHandlers[this.state.opcode]; + if (typeof handler == 'undefined') this.error('no handler for opcode ' + this.state.opcode); + else handler(data); +} + +/** + * Endprocessing a packet. + * + * @api private + */ + +Parser.prototype.endPacket = function() { + this.expectOffset = 0; + this.expectBuffer = null; + this.expectHandler = null; + if (this.state.lastFragment && this.state.opcode == this.state.activeFragmentedOperation) { + // end current fragmented operation + this.state.activeFragmentedOperation = null; + } + this.state.lastFragment = false; + this.state.opcode = this.state.activeFragmentedOperation != null ? this.state.activeFragmentedOperation : 0; + this.state.masked = false; + this.expect('Opcode', 2, this.processPacket); +} + +/** + * Reset the parser state. + * + * @api private + */ + +Parser.prototype.reset = function() { + this.state = { + activeFragmentedOperation: null, + lastFragment: false, + masked: false, + opcode: 0 + }; + this.expectOffset = 0; + this.expectBuffer = null; + this.expectHandler = null; + this.overflow = null; + this.currentMessage = ''; +} + +/** + * Unmask received data. + * + * @api private + */ + +Parser.prototype.unmask = function (mask, buf, binary) { + if (mask != null) { + for (var i = 0, ll = buf.length; i < ll; i++) { + buf[i] ^= mask[i % 4]; + } + } + if (binary) return buf; + return buf != null ? buf.toString('utf8') : ''; +} + +/** + * Concatenates a list of buffers. + * + * @api private + */ + +Parser.prototype.concatBuffers = function(buffers) { + var length = 0; + for (var i = 0, l = buffers.length; i < l; ++i) { + length += buffers[i].length; + } + var mergedBuffer = new Buffer(length); + var offset = 0; + for (var i = 0, l = buffers.length; i < l; ++i) { + buffers[i].copy(mergedBuffer, offset); + offset += buffers[i].length; + } + return mergedBuffer; +} + +/** + * Handles an error + * + * @api private + */ + +Parser.prototype.error = function (reason) { + this.reset(); + this.emit('error', reason); + return this; +}; diff --git a/signaling-server/node_modules/socket.io/lib/transports/websocket/index.js b/signaling-server/node_modules/socket.io/lib/transports/websocket/index.js new file mode 100644 index 0000000..3a952b7 --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transports/websocket/index.js @@ -0,0 +1,11 @@ + +/** + * Export websocket versions. + */ + +module.exports = { + 7: require('./hybi-07-12'), + 8: require('./hybi-07-12'), + 13: require('./hybi-16'), + default: require('./default') +}; diff --git a/signaling-server/node_modules/socket.io/lib/transports/xhr-polling.js b/signaling-server/node_modules/socket.io/lib/transports/xhr-polling.js new file mode 100644 index 0000000..1db5aee --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/transports/xhr-polling.js @@ -0,0 +1,69 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module requirements. + */ + +var HTTPPolling = require('./http-polling'); + +/** + * Export the constructor. + */ + +exports = module.exports = XHRPolling; + +/** + * Ajax polling transport. + * + * @api public + */ + +function XHRPolling (mng, data, req) { + HTTPPolling.call(this, mng, data, req); +}; + +/** + * Inherits from Transport. + */ + +XHRPolling.prototype.__proto__ = HTTPPolling.prototype; + +/** + * Transport name + * + * @api public + */ + +XHRPolling.prototype.name = 'xhr-polling'; + +/** + * Frames data prior to write. + * + * @api private + */ + +XHRPolling.prototype.doWrite = function (data) { + HTTPPolling.prototype.doWrite.call(this); + + var origin = this.req.headers.origin + , headers = { + 'Content-Type': 'text/plain; charset=UTF-8' + , 'Content-Length': data === undefined ? 0 : Buffer.byteLength(data) + , 'Connection': 'Keep-Alive' + }; + + if (origin) { + // https://developer.mozilla.org/En/HTTP_Access_Control + headers['Access-Control-Allow-Origin'] = origin; + headers['Access-Control-Allow-Credentials'] = 'true'; + } + + this.response.writeHead(200, headers); + this.response.write(data); + this.log.debug(this.name + ' writing', data); +}; diff --git a/signaling-server/node_modules/socket.io/lib/util.js b/signaling-server/node_modules/socket.io/lib/util.js new file mode 100644 index 0000000..f7d9f2b --- /dev/null +++ b/signaling-server/node_modules/socket.io/lib/util.js @@ -0,0 +1,50 @@ + +/*! + * socket.io-node + * Copyright(c) 2011 LearnBoost <dev@learnboost.com> + * MIT Licensed + */ + +/** + * Module dependencies. + */ + +/** + * Converts an enumerable to an array. + * + * @api public + */ + +exports.toArray = function (enu) { + var arr = []; + + for (var i = 0, l = enu.length; i < l; i++) + arr.push(enu[i]); + + return arr; +}; + +/** + * Unpacks a buffer to a number. + * + * @api public + */ + +exports.unpack = function (buffer) { + var n = 0; + for (var i = 0; i < buffer.length; ++i) { + n = (i == 0) ? buffer[i] : (n * 256) + buffer[i]; + } + return n; +} + +/** + * Left pads a string. + * + * @api public + */ + +exports.padl = function (s,n,c) { + return new Array(1 + n - s.length).join(c) + s; +} + |