Base for multi-host support

Must do further testing; it's too late for me to continue now.

public/css/default.css

@@ -24,6 +24,12 @@ body, html {
 	color: #00DD00;
 }
 
+.good 		{ color: #99FF99; }
+.bad 		{ color: #ff7777; }
+.info 		{ color:#99FFFF; }
+.neutral	{ color: #eeeeee; }
+
+
 /*------------------------------------*\
 	CHAT
 \*------------------------------------*/
@@ -58,7 +64,7 @@ body, html {
 #chat i.fatal	{ color: #ff7777; }
 
 /*------------------------------------*\
-	INPUT
+	INPUT & LOADER
 \*------------------------------------*/
 #input_wrapper {
 	right:0;
@@ -69,7 +75,8 @@ body, html {
 	height:30px;
 }
 
-#input {
+#input,
+#loader {
 	top: 0;
 	bottom: 0;
 	width: 100%;
@@ -78,9 +85,28 @@ body, html {
 	border: 0;
 	outline: 0;
 
+	
+
 	padding: 5px 5px 5px 15px;
 
 	color: #FFFFFF;
 	background-color:#141414;
 	height:30px;
+}
+
+#input { z-index: 1; }
+#loader { z-index: 0; line-height: 20px; font-size: 14px; font-weight: 100; font-family: tahoma;}
+
+/*------------------------------------*\
+	SPINNER
+\*------------------------------------*/
+.loading #loader { z-index: 2; }
+.loading #loader span {
+	margin-left:-2px;
+	-webkit-animation: rotation 1s infinite linear;
+}
+
+@-webkit-keyframes rotation {
+    from {-webkit-transform: rotate(0deg);}
+    to   {-webkit-transform: rotate(359deg);}
 }

public/index.html

@@ -15,10 +15,11 @@
 	</ul>
 
 	<!-- Message input -->
-	<div id="input_wrapper">
+	<div id="input_wrapper" class="loading">
+		<div id="loader"><span>|</span></div>
 		<input type="text" id="input" />
 	</div>
-	
+
 	<!-- Only include the script needed for loading the app -->
 	<script src="js/vendor/fandango.v20140921.min.js"></script>
 	<script src="js/bootstrap.js"></script>

public/js/bootstrap.js

@@ -5,6 +5,9 @@ fandango.defaults({
 	baseUrl: 'js/cryptalk_modules/',
 	paths: {
 		websocket: 'https://cdnjs.cloudflare.com/ajax/libs/socket.io/0.9.16/socket.io.min.js',
+		// Newer version:
+		// We'll have to fix the Access Control issue first though (https://github.com/Automattic/socket.io-client/issues/641).
+		// websocket: 'https://cdn.socket.io/socket.io-1.1.0.js',
 		aes: 'https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.2/rollups/aes.js',
 		domReady: 'https://cdnjs.cloudflare.com/ajax/libs/require-domReady/2.0.1/domReady.min.js'
 	},

public/js/cryptalk_modules/$.js

@@ -9,7 +9,16 @@ define(['fandango', 'websocket', 'aes'], function (fandango, websocket, aes) {
 		utils = exports.utilities,
 		proto = exports.prototype,
 
-		each = fandango.each;
+		each = fandango.each,
+
+		/**
+		 * Regex for matching NaN.
+		 *
+		 * @property reNaN
+		 * @type {Regex}
+		 * @private
+		 */
+		reDigits = /^\d+$/;
 	
 	// The DOM selector engine
 	exports.selector = function (selector) {
@@ -61,6 +70,20 @@ define(['fandango', 'websocket', 'aes'], function (fandango, websocket, aes) {
 		try { return document.activeElement; } catch (e) {}
 	}
 
+	/**
+	 * Removes all characters but 0 - 9 from given string.
+	 *
+	 * @method digits
+	 * @param {String} str The string to sanitize
+	 * @return {String} The sanitized string
+	 * @example
+	 * 	$.digits('foo8bar'); // `8`
+	 * 	$.digits('->#5*duckM4N!!!111'); // `54111`
+	 */
+	utils.isDigits = function(value) {
+		return reDigits.test(value);
+	};
+
 	/**
 	 * A very simple templating function.
 	 * @param  {} str [description]
@@ -73,6 +96,28 @@ define(['fandango', 'websocket', 'aes'], function (fandango, websocket, aes) {
 		});
 	};
 
+	utils.getJSON = function (path, onSuccess, onError) {
+		var data, request = new XMLHttpRequest();
+		request.open('GET', path, true);
+
+		request.onreadystatechange = function() {
+			if (this.readyState === 4) {
+				if (this.status >= 200 && this.status < 400) {
+					try {
+						onSuccess && onSuccess(JSON.parse(this.responseText));
+					} catch (e) {
+						onError && onError();
+					}
+				} else {
+					onError && onError();
+				}
+			}
+		};
+
+		request.send();
+		request = null;
+	};
+
 	// Part of this is originating from mustasche.js
 	// Code: 		https://github.com/janl/mustache.js/blob/master/mustache.js#L43
 	// License: 	https://github.com/janl/mustache.js/blob/master/LICENSE

public/js/cryptalk_modules/cryptalk.js

@@ -1,7 +1,7 @@
 // Main cryptalk module
 define({
 	compiles: ['$'],
-	requires: ['settings', 'templates', 'sound', 'fandango']
+	requires: ['hosts', 'templates', 'sound', 'fandango']
 }, function ($, requires, data) {
 	var socket,
 		key,
@@ -9,8 +9,9 @@ define({
 		room,
 		hash,
 		nick,
+		mute,
 
-		mute = false,
+		settings = {},
 
 		history = [],
 		history_pos = -1,
@@ -20,15 +21,27 @@ define({
 		// Collection of DOM components
 		components = {
 			chat: 	$('#chat'),
-			input: 	$('#input')
+			input: 	$('#input'),
+			inputWrapper: $('#input_wrapper')
 		},
 
 		// Shortcut
-		settings = requires.settings;
+		hosts = requires.hosts.hosts;
 		fandango = requires.fandango;
 		templates = requires.templates;
 		sound = requires.sound;
 
+		lockInput = function () {
+			components.input[0].setAttribute('disabled', 'disabled');
+			components.inputWrapper[0].className = 'loading';
+		},
+
+		unlockInput = function () {
+			components.input[0].removeAttribute('disabled');
+			components.inputWrapper[0].className = '';
+			components.input.focus();
+		},
+
 		// Adds a new message to the DOM
 		post = function (type, text, clearChat, clearBuffer, nick) {
 			var tpl = templates.post[type],
@@ -53,8 +66,205 @@ define({
 
 		// Chat related commands
 		commands = {
-			help: function () {
+			help: function (payload, done) {
 				post('motd', templates.help);
+				done();
+			},
+
+			hosts: function (force, done) {
+				var i = 0,
+					left = hosts.length,
+					host,
+					strhosts = '\n',
+					callback = function (host, index, isUp) {
+						return function (hostSettings) {
+							host.settings = (isUp ? hostSettings : 0);
+
+							strhosts += $.template(templates.messages[(isUp ? 'host_available' : 'host_unavailable')], {
+								name: host.name,
+								path: host.path,
+								index: index
+							});
+
+							if (!--left) {
+								post('info', strhosts);
+								done();
+							}
+						}
+					};
+
+				// 
+				force = (force && force.toLowerCase() === 'force');
+
+				// Loop through all the hosts
+				while (host = hosts[i]) {
+					if (!force && host.settings !== undefined) {
+						if (host.settings) {
+							callback(host, i, 1)();
+						} else {
+							callback(host, i, 0)();
+						}
+					} else {
+						require([host.path], callback(host, i, 1), callback(host, i, 0));
+					}
+
+					i++;
+				}
+			},
+
+			connect: function (toHost, done) {
+				var request;
+
+				if (host && host.connected) {
+					done();
+					return post('error', $.template(templates.messages.already_connected, {
+						host: host.name || 'localhost'
+					}));
+				}
+
+				if ($.isDigits(toHost)) {
+					if (host = hosts[+toHost]) {
+						if (host.settings) {
+							settings = host.settings;
+						} else {
+							request = host.path;
+						}
+					} else {
+						return post('error', 'Undefined host index: ' + toHost);
+					}
+				} else if (fandango.is(toHost, 'untyped')) {
+					settings = toHost.settings;
+				} else { // Assume string
+					request = toHost;
+				}
+
+				if (request) {
+					return require([request], function (settings) {
+						host.settings = settings;
+						commands.connect(toHost, done);
+					}, function () {
+						return post('error', 'Could not fetch host settings: ' + request);
+					});
+				}
+
+				// Push 'Connecting...' message
+				post('info', $.template(templates.messages.connecting, {
+					host: host.name || 'localhost'
+				}));
+
+				// The one  and only socket
+				socket = $.Websocket.connect(host.host, {
+					forceNew: true,
+					'force new connection': true
+				});
+
+				// Bind socket events
+				socket
+					.on('room:generated', function (data) {
+						var sanitized = $.escapeHtml(data);
+						post('server', $.template(templates.server.room_generated, { payload: sanitized }));
+						socket.emit('room:join', sanitized);
+					})
+
+					.on('room:joined', function (data) {
+						room = data;
+						post('info', $.template(templates.messages.joined_room, { roomName: room }));
+
+						// Automatically count persons on join
+						socket.emit('room:count');
+					})
+
+					.on('room:left', function () {
+						post('info', $.template(templates.messages.left_room, { roomName: room }));
+
+						// Clear history on leaving room
+						clearHistory();
+
+						room = false;
+					})
+
+					.on('message:send', function (data) {
+						var decrypted = $.AES.decrypt(data.msg, room + key),
+							sanitized = $.escapeHtml(decrypted),
+							nick = 		(data.nick == undefined || !data.nick ) ? templates.default_nick : $.escapeHtml($.AES.decrypt(data.nick, room + key));
+
+						if (!decrypted) {
+							post('error', templates.messages.unable_to_decrypt);
+						} else {
+							post('message', sanitized, false, false, nick);
+							if( !mute ) sound.playTones(sound.messages.message);
+						}
+					})
+
+					.on('message:server', function (data) {
+						if( data.msg ) {
+							var sanitized = $.escapeHtml(data.msg);
+							if( templates.server[sanitized] ) {
+								if( data.payload !== undefined ) {
+									var sanitized_payload = $.escapeHtml(data.payload);
+									post('server', $.template(templates.server[sanitized], { payload: sanitized_payload }));
+								} else {
+									post('server', templates.server[sanitized]);
+								}
+
+								// Play sound
+								if (sound.messages[sanitized] !== undefined && !mute ) sound.playTones(sound.messages[sanitized]);
+
+							} else {
+								post('error', templates.server.bogus);
+							}
+						} else {
+							post('error', templates.server.bogus);
+						}
+					})
+
+					.on('connect', function () {
+						// Tell the user that the chat is ready to interact with
+						post('info', $.template(templates.messages.connected, {
+							host: host.name || 'localhost'
+						}));
+
+						host.connected = 1;
+
+						done();
+					})
+
+					.on('disconnect', function () {
+						room = 0;
+						key = 0;
+						host.connected = 0;
+
+						// Tell the user that the chat is ready to interact with
+						post('info', $.template(templates.messages.disconnected, {
+							host: host.name || 'localhost'
+						}));
+					})
+
+					.on('error', function () {
+						room = 0;
+						key = 0;
+						host.connected = 0;
+						post('error', templates.messages.socket_error);
+						done();
+					});
+			},
+
+			reconnect: function (foo, done) {
+				if (host) {
+					if (host.connected) {
+						commands.disconnect()
+						commands.connect(host, done);
+					} else {
+						commands.connect(host, done);
+					}
+				} else {
+					done();
+					return post('error', templates.messages.reconnect_no_host);
+				}
+			},
+
+			disconnect: function () {
+				socket.disconnect();
 			},
 
 			clear: function () {
@@ -81,6 +291,10 @@ define({
 			},
 
 			key: function (payload) {
+				if (!host) {
+					return post('error', templates.messages.key_no_host);
+				}
+
 				// Make sure the key meets the length requirements
 				if (payload.length > settings.key_maxLen) {
 					return post('error', templates.messages.key_to_long);
@@ -119,6 +333,10 @@ define({
 			},
 
 			join: function (payload) {
+				if (!host) {
+					return post('error', templates.messages.join_no_host);
+				}
+
 				return (
 					room
 						? post('error', templates.messages.already_in_room)
@@ -169,7 +387,7 @@ define({
 			// The Document object is bound to this element.
 			// If the active element is not the input, focus on it and exit the function.
 			// Ignore this when ctrl and/or alt is pressed!
-			if (components.input[0] !== $.activeElement() && !e.ctrlKey && !e.altKey) {
+			if (!e.ctrlKey && !e.altKey && components.input[0] !== $.activeElement()) {
 				return components.input.focus();
 			}
 
@@ -178,7 +396,7 @@ define({
 			history_timer = setTimeout(clearHistory, 60000);
 
 			// Check for escape key, this does nothing but clear the input buffer and reset history position
-			if ( e.keyCode == 27 ) {
+			if (e.keyCode == 27) {
 				history_pos = -1;
 				clearInput();
 
@@ -186,7 +404,7 @@ define({
 			} 
 
 			// Check for up or down-keys, they handle the history position
-			if( e.keyCode == 38 || e.keyCode == 40) {
+			if (e.keyCode == 38 || e.keyCode == 40) {
 
 				if 	(e.keyCode == 38 ) { history_pos = (history_pos > history.length - 2) ? -1 : history_pos = history_pos + 1; } 
 				else { history_pos = (history_pos <= 0) ? -1 : history_pos = history_pos - 1; }
@@ -220,8 +438,18 @@ define({
 					return post('error', $.template(templates.messages.unrecognized_command, { commandName: command }));
 				}
 
-				// Execute command handler
+				// Some commands are asynchrounous;
-				commands[command](payload);
+				// If the command expects more than one argument, the second argument is a callback that is called when the command is done.
+				if (commands[command].length > 1) {
+					// Lock the input from further interaction
+					lockInput();
+
+					// Execute command handler with callback function.
+					commands[command](payload, unlockInput);
+				} else {
+					// Execute normally.
+					commands[command](payload);
+				}
 
 				// Clear input field
 				clearInput();
@@ -257,103 +485,24 @@ define({
 			}
 		};
 
-	host = settings.host;
+	// Bind the necessary DOM events
+	$(document).on('keydown', onKeyDown);
+
+	// Put focus on the message input
+	components.input.focus();
 
 	// Post the help/welcome message
 	post('motd', templates.motd, true);
 
-	// Push 'Connecting...' message
+	unlockInput();
-	post('info', $.template(templates.messages.connecting, {
-		host: host || 'localhost'
-	}));
 
-	// The one  and only socket
+	// It's possible to provide room and key using the hashtag.
-	socket = $.Websocket.connect(host);
+	// The room and key is then seperated by semicolon (room:key).
+	// If there is no semicolon present, the complete hash will be treated as the room name and the key has to be set manually.
+	if (host && (hash = window.location.hash)) {
+		parts = hash.slice(1).split(':');
 
-	// Bind socket events
+		parts[0] && commands.join(parts[0]);
-	socket
+		parts[1] && commands.key(parts[1]);
-		.on('room:generated', function (data) {
+	}
-			var sanitized = $.escapeHtml(data);
-			post('server', $.template(templates.server.room_generated, { payload: sanitized }));
-			socket.emit('room:join', sanitized);
-		})
-
-		.on('room:joined', function (data) {
-			room = data;
-			post('info', $.template(templates.messages.joined_room, { roomName: room }));
-
-			// Automatically count persons on join
-			socket.emit('room:count');
-		})
-
-		.on('room:left', function () {
-			post('info', $.template(templates.messages.left_room, { roomName: room }));
-
-			// Clear history on leaving room
-			clearHistory();
-
-			room = false;
-		})
-
-		.on('message:send', function (data) {
-			var decrypted = $.AES.decrypt(data.msg, room + key),
-				sanitized = $.escapeHtml(decrypted),
-				nick = 		(data.nick == undefined || !data.nick ) ? templates.default_nick : $.escapeHtml($.AES.decrypt(data.nick, room + key));
-
-			if (!decrypted) {
-				post('error', templates.messages.unable_to_decrypt);
-			} else {
-				post('message', sanitized, false, false, nick);
-				if( !mute ) sound.playTones(sound.messages.message);
-			}
-		})
-
-		.on('message:server', function (data) {
-			if( data.msg ) {
-				var sanitized = $.escapeHtml(data.msg);
-				if( templates.server[sanitized] ) {
-					if( data.payload !== undefined ) {
-						var sanitized_payload = $.escapeHtml(data.payload);
-						post('server', $.template(templates.server[sanitized], { payload: sanitized_payload }));
-					} else {
-						post('server', templates.server[sanitized]);
-					}
-
-					// Play sound
-					if (sound.messages[sanitized] !== undefined && !mute ) sound.playTones(sound.messages[sanitized]);
-
-				} else {
-					post('error', templates.server.bogus);
-				}
-			} else {
-				post('error', templates.server.bogus);
-			}
-		})
-
-		.on('connect', function () {
-			// Bind the necessary DOM events
-			$(document).on('keydown', onKeyDown);
-
-			// Put focus on the message input
-			components.input.focus();
-
-			// Tell the user that the chat is ready to interact with
-			post('info', $.template(templates.messages.connected, {
-				host: host || 'localhost'
-			}));
-
-			// It's possible to provide room and key using the hashtag.
-			// The room and key is then seperated by semicolon (room:key).
-			// If there is no semicolon present, the complete hash will be treated as the room name and the key has to be set manually.
-			if (hash = window.location.hash) {
-				parts = hash.slice(1).split(':');
-
-				parts[0] && commands.join(parts[0]);
-				parts[1] && commands.key(parts[1]);
-			}
-		})
-
-		.on('error', function () {
-			post('error', templates.messages.socket_error);
-		});
 });

public/js/cryptalk_modules/hosts.js

@@ -0,0 +1,15 @@
+define({
+	// Used to autoconnect to specific host.
+	// Points to a specific index in the 'hosts' array.
+	// Use -1 to not autoconnect.
+	autoconnect: 0,
+
+	// A collection of hosts to choose from
+	hosts: [
+		{
+			name: 'localhost',
+			host: 'http://localhost:8080',
+			path: 'http://localhost:8080/js/cryptalk_modules/settings.js'
+		}
+	]
+});

public/js/cryptalk_modules/settings.js

@@ -1,7 +1,4 @@
 define({
-	// If no host is given it will default to localhost.
-	host: '',
-
 	nick_maxLen: 20,
 	nick_minLen: 3,
 

public/js/cryptalk_modules/templates.js

@@ -65,6 +65,9 @@ define({
 		key_to_long: 			'Man that\'s a long key. Make it a tad short, \'kay?',
 		key_ok_ready: 			'Key set, you can now start communicating.',
 		key_ok_but_no_room: 	'Key set, you can now join a room and start communicating.',
+		key_no_host: 			'You have to connect to a host before setting the key.',
+
+		join_no_host: 			'You have to connect to a host before joining a room.',
 
 		nick_to_short: 			'Nickname is too short, it has to be at least {nick_minLen} characters long. Try again.',
 		nick_to_long: 			'Nickname is too long, it can be at most {nick_maxLen} characters long. Try again.',
@@ -90,7 +93,13 @@ define({
 
 		socket_error: 			'A network error has occurred. A restart may be required to bring back full functionality.<br>Examine the logs for more details.',
 		connecting: 			'Connecting to host {host}...',
-		connected: 				'A connection to the server has been established. Happy chatting!'
+		connected: 				'A connection to the server has been established. Happy chatting!',
+		disconnected: 			'Disconnected from host {host}.',
+		already_connected:		'You have to disconnect from {host} before joining another.',
+		reconnect_no_host:		'There is no host to reconnect with.',
+
+		host_available: 		'<span class="info">{index}</span>	<span class="good">[AVAILABLE]</span>	<span class="neutral">{name}</span>\n',
+		host_unavailable: 		'<span class="info">{index}</span>	<span class="bad">[UNAVAILABLE]</span>	<span class="neutral">{name}</span>\n'
 	},
 
 	server: {

public/js/vendor/fandango.v20140921.min.js

@@ -1,20 +1,20 @@
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+(function(s){function A(f){this.name="TimeoutError";this.message=f||""}function B(f){this.name="RejectedError";this.message=f||""}function F(f,c,e,g){var d,a,b=[],n,m,k,h=function(a){f.length===b.push(l[a].exports)&&(g&&clearTimeout(n),c(b))};g=g||v.timeout;for(k=0;m=f[k++];)if((d=l[m])&&1!==d.state)if(2===d.state)if(a=new B('Could resolve all dependencies; dependency "'+m+'" has been rejected.'),e)e(a);else throw a;else 3===d.state&&h(m);else(u[m]=u[m]||[]).push(h);g&&(n=setTimeout(function(){for(var d,
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