1 files changed, 355 insertions, 0 deletions
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);
+  };
+};