├── .gitignore ├── README.md ├── app.js ├── config.js ├── public └── static │ ├── css │ └── style.css │ ├── images │ └── bg.jpg │ └── js │ ├── create.js │ ├── jquery.js │ └── talk.js └── views ├── index.ejs └── room.ejs /.gitignore: -------------------------------------------------------------------------------- 1 | *.swp 2 | *.swo 3 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | UberChat 2 | ======== 3 | 4 | This is just an early experiment with Node.JS + Socket.IO. 5 | You can play with a live example at chat.joshmarshall.org. 6 | 7 | There isn't a datastore / persistence layer yet. That may 8 | be coming... but it's a goofy little project, so don't hold 9 | your breath. :) 10 | 11 | Requirements 12 | ------------ 13 | * Node.JS (http://node.js) 14 | * NPM (if you install packages using it :)) 15 | * Socket.IO (npm install socket.io) 16 | * Express (npm install express) 17 | * EJS (npm install ejs) 18 | 19 | Running 20 | ------- 21 | Just a node app, so: 22 | 23 | node app.js 24 | NODE_ENV=production node app.js 25 | 26 | etc., work like normal. 27 | 28 | Configuration 29 | ------------- 30 | The default configuration options are in config.js, but 31 | I recommend creating "development.js" or "production.js" 32 | files in the main root instead of jacking with config.js, 33 | unless you want to make changes to every installation. 34 | 35 | These will be automatically used based on the contents 36 | of "NODE_ENV" 37 | -------------------------------------------------------------------------------- /app.js: -------------------------------------------------------------------------------- 1 | /* UBERCHAT 2 | This is just a simple chat program that lets you create rooms 3 | and send out links to your friends. 4 | */ 5 | 6 | var sys = require("sys"); 7 | var express = require("express"); 8 | var app = express.createServer(); 9 | 10 | // Configuration 11 | var config = require("./config.js").configure(); 12 | app.use(express.static(__dirname + '/public')); 13 | app.use(express.cookieParser({"secret": config.cookieSecret})); 14 | app.use(express.bodyParser()); 15 | app.set("view engine", "ejs"); 16 | app.set("view options", { layout: false }); 17 | 18 | // Routes 19 | app.get("/", function(req, res) { 20 | var xsrf = generateId(); 21 | res.cookie("_xsrf", xsrf); 22 | res.render("index.ejs", { xsrf: xsrf, config: config }); 23 | }); 24 | 25 | app.post("/room", function(req, res) { 26 | var xsrf = req.cookies["_xsrf"]; 27 | if (!req.header("content-type") == "application/json") 28 | return res.send({ error: "Content not JSON." }, 400); 29 | var matchXsrf = req.body._xsrf; 30 | if (!xsrf || !matchXsrf || !(xsrf == matchXsrf)) 31 | return res.send({ error: "Unauthorized"}, 403); 32 | var name = req.body.name; 33 | res.header('content-type', 'application/json'); 34 | name = name.replace(/^\s+|\s+$/, ""); 35 | if (!name || name.length < 4 || name.replace(/^[\w\s]+$/, "") != "") 36 | return res.send({ error: "Invalid name."}, 400); 37 | var id = generateId(); 38 | room = Rooms.createRoom(id, name); 39 | res.send({ url: room.url }, 200); 40 | }); 41 | 42 | app.get("/room/:id", function(req, res) { 43 | var room = Rooms.getRoom(req.params.id); 44 | if (!room) 45 | // don't know, going home 46 | return res.redirect("/"); 47 | res.render("room.ejs", { room: room, config: config }); 48 | }); 49 | 50 | // Starting HTTP server 51 | app.listen(config.port); 52 | sys.log("Starting app on port "+config.port); 53 | 54 | // Setting up Socket.IO 55 | var io = require("socket.io"); 56 | var socket = io.listen(app, { transports: config.transports }); 57 | 58 | // Random id generator 59 | var generateId = function() { 60 | var id = ''; 61 | var chars = 'abcdefghijklmnopqrstuvwxyz'+ 62 | 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'+ 63 | '0123456789-_'; 64 | for (i=0; i<10; i++) { 65 | var index = Math.floor(Math.random() * chars.length) 66 | id += chars[index]; 67 | } 68 | return id; 69 | }; 70 | 71 | // A single chat room 72 | var Room = function(id, name) { 73 | this.name = name; 74 | this.id = id; 75 | this.url = "/room/"+this.id; 76 | this.password = null; 77 | this.users = new Users(this.name); 78 | this.created = new Date().getTime(); 79 | 80 | // Wrapper for Users.addUser 81 | this.addUser = function(user) { 82 | this.users.addUser(user); 83 | }; 84 | 85 | // Wrapper for Users.getUser 86 | this.getUser = function(name) { 87 | return this.users.getUser(name); 88 | }; 89 | 90 | // Wrapper for Users.allUsers 91 | this.allUsers = function() { 92 | return this.users.allUsers(); 93 | }; 94 | 95 | // Wrapper for Users.sendToAll 96 | this.sendToAll = function(data) { 97 | this.users.sendToAll(data); 98 | }; 99 | 100 | // Wrapper for Users.sendToOne 101 | this.sendToOne = function(user, data) { 102 | this.users.sendToOne(user, data); 103 | }; 104 | 105 | // Wrapper for Users.checkAway 106 | this.checkActivity = function() { 107 | result = this.users.checkAway(); 108 | if (!result) 109 | result = this.created; 110 | return result; 111 | }; 112 | 113 | // Wrapper for Users.removeUser 114 | this.removeUser = function(user) { 115 | return this.users.removeUser(user); 116 | }; 117 | } 118 | 119 | // All of the chat rooms associated with this server 120 | var Rooms = { 121 | rooms: {}, 122 | 123 | // adding a new room to the room list 124 | createRoom: function(id, name) { 125 | var room = Rooms.rooms[id]; 126 | if (room && room.id) 127 | return null; // already taken 128 | Rooms.rooms[id] = new Room(id, name); 129 | return Rooms.rooms[id]; 130 | }, 131 | 132 | // retrieving a room object from the room list 133 | getRoom: function(id) { 134 | var room = Rooms.rooms[id]; 135 | if (!room || !room.id) 136 | return null; 137 | return room; 138 | }, 139 | 140 | // set users to 'away' / 'active', and delete rooms 141 | // if necessary 142 | checkActivity: function () { 143 | for (roomName in Rooms.rooms) { 144 | var room = Rooms.rooms[roomName]; 145 | if (!room || !room.id) 146 | continue 147 | var lastActivity = room.checkActivity(); 148 | var expires = lastActivity + config.roomTimeout; 149 | var userCount = room.allUsers().length; 150 | if (expires < new Date().getTime() && userCount == 0) { 151 | // deleting room 152 | Rooms.rooms[roomName] = null; 153 | } 154 | } 155 | }, 156 | 157 | // delete a room, alerting any remaining users 158 | closeRoom: function(name, data) { 159 | if (!data.message) { 160 | data.message = "Closing room."; 161 | } 162 | Commands.close(Rooms.rooms[name].users, data); 163 | } 164 | 165 | }; 166 | 167 | // A simple user object 168 | var User = function(client) { 169 | this.name = null; 170 | this.client = client; 171 | this.session = client.sessionId; 172 | this.activity = new Date().getTime(); 173 | this.status = "active"; 174 | this.room = null; 175 | this.send = function(data) { 176 | this.client.send(data); 177 | }; 178 | this.getRoom = function() { 179 | return Rooms.getRoom(this.room); 180 | }; 181 | }; 182 | 183 | // A list of users, with appropriate methods 184 | var Users = function(room) { 185 | this.room = room; 186 | 187 | // Add a new user to the room 188 | this.addUser = function(user) { 189 | this[user.name] = user; 190 | }; 191 | 192 | // Checks to see if a user exists 193 | this.getUser = function(name) { 194 | var user = this[name]; 195 | if (user && user.name) { 196 | return user; 197 | }; 198 | }; 199 | 200 | // Pull a user from the object 201 | this.removeUser = function(user) { 202 | user.status = "quit"; 203 | testUser = this[user.name]; 204 | if (testUser && testUser.session == user.session) { 205 | this[user.name] = null; 206 | return true; 207 | } else { 208 | sys.log("sessions don't match -- not deleting."); 209 | return false; 210 | } 211 | }; 212 | 213 | // Return all valid users 214 | this.allUsers = function() { 215 | var users = []; 216 | for (attr in this) { 217 | if (!this.hasOwnProperty(attr)) 218 | continue; 219 | var user = this.getUser(attr); 220 | if (user && user.name) { 221 | users.push(user); 222 | } 223 | } 224 | return users; 225 | }; 226 | 227 | // Send a message to all users in this list 228 | this.sendToAll = function(data) { 229 | var msg = JSON.stringify(data); 230 | var users = this.allUsers(); 231 | for (var i=0; i mostRecent) 253 | mostRecent = user.activity; 254 | var diff = now - user.activity; 255 | if (diff > config.awayTimout) { 256 | if (user.status != "away") { 257 | 258 | user.status = "away"; 259 | Commands.away(user, {}); 260 | } 261 | } else { 262 | user.status = "active"; 263 | } 264 | } 265 | return mostRecent; 266 | }; 267 | 268 | }; 269 | 270 | // The list of interface commands the server can send / receive 271 | var Commands = { 272 | 273 | // Alert all users that a room is closing 274 | close: function(room, data) { 275 | data = { command: "close", 276 | message: data.message }; 277 | room.sendToAll(data); 278 | }, 279 | 280 | // Alert a room that a user is inactive (away) 281 | away: function(user, data) { 282 | data = { command: "away", 283 | name: user.name }; 284 | user.getRoom().sendToAll(data); 285 | }, 286 | 287 | // Broadcast a chat message (may be a 'private' broadcast) 288 | broadcast: function(user, data) { 289 | user.activity = new Date().getTime(); 290 | if (user.status == "away") 291 | user.status = "active"; 292 | privateUser = data.private; 293 | data = { command: "broadcast", 294 | message: data.message, 295 | name: user.name }; 296 | if (privateUser) { 297 | data.private = privateUser; 298 | toUser = user.getRoom().users[privateUser]; 299 | if (!toUser) 300 | return Commands.error(user, "User doesn't exist or left."); 301 | user.getRoom().sendToOne(toUser, data); 302 | user.getRoom().sendToOne(user, data); 303 | } else { 304 | user.getRoom().sendToAll(data); 305 | } 306 | }, 307 | 308 | // Send an error to a single user 309 | error: function(user, message) { 310 | var data = { name: user.name, 311 | message: message, 312 | command: "error" }; 313 | user.getRoom().sendToOne(user, data); 314 | }, 315 | 316 | // A user requested an invalid name 317 | invalidName: function(user, message) { 318 | data = { command: "invalidName", 319 | name: user.name, 320 | message: message }; 321 | user.getRoom().sendToOne(user, data); 322 | }, 323 | 324 | // A user has 'joined' a room (valid name) 325 | join: function(user, data) { 326 | user.getRoom().addUser(user); 327 | user.activity = new Date().getTime(); 328 | data = { command: "join", 329 | name: user.name } 330 | user.getRoom().sendToAll(data); 331 | }, 332 | 333 | // A user has left a room (DCed, etc.) 334 | 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-------------------------------------------------------------------------------- /public/static/js/talk.js: -------------------------------------------------------------------------------- 1 | /* This is the client side chat interface */ 2 | var Talk = { 3 | 4 | // Constants 5 | MAXMESSAGES: 250, // before it starts "cleaning out" 6 | 7 | // User variables 8 | username: null, 9 | private: null, 10 | socket: null, 11 | room: null, 12 | 13 | // Send a new chat message to the server 14 | chat: function(message) { 15 | if (message.replace(/^\s+|\s+$/, "") == "") 16 | return; 17 | var data = { command: "chat", 18 | message: message }; 19 | if (Talk.private) 20 | data.private = Talk.private; 21 | 22 | Talk.send(data); 23 | }, 24 | 25 | // Send a final data structure to the socket 26 | send: function(data) { 27 | if (!data.room) 28 | data.room = Talk.room; 29 | Talk.socket.send(data); 30 | }, 31 | 32 | // Upon initial connection, request a name 33 | connect: function() { 34 | Talk.name(); 35 | }, 36 | 37 | // Let the user know when he / she has disconnected 38 | // and empty the user list 39 | disconnect: function() { 40 | Talk.commands.error({ message: "You have disconnected."}); 41 | var users = $("#users"); 42 | users.empty(); 43 | }, 44 | 45 | // Prompt for name and send it. 46 | name: function(msg) { 47 | if (!msg) 48 | msg = "What's your name?" 49 | Talk.username = prompt(msg); 50 | Talk.send({ command: "name", name: Talk.username }); 51 | $("#message").focus(); 52 | }, 53 | 54 | // Get list of users for current room 55 | users: function() { 56 | Talk.send({ command: "users" }); 57 | }, 58 | 59 | // Receive a message from the server and parse it 60 | receive: function(dataString) { 61 | var data = JSON.parse(dataString); 62 | if (Talk.commands.hasOwnProperty(data.command)) { 63 | Talk.commands[data.command](data); 64 | } else { 65 | Talk.commands.error({ message: "Unknown command "+data.command }); 66 | } 67 | }, 68 | 69 | // Tell the server (nicely) that we're leaving 70 | quit: function() { 71 | Talk.send({ command: "quit" }); 72 | }, 73 | 74 | // The server response commands 75 | commands: { 76 | 77 | // A user is inactive 78 | away: function(data) { 79 | var awaySpan = $(""); 80 | awaySpan.text(data.name+" is away."); 81 | Talk.addEntry(awaySpan); 82 | Talk.users(); 83 | }, 84 | 85 | // A user broadcasted (or private messaged) the room / you 86 | broadcast: function(data) { 87 | var prefix = data.name; 88 | var msgSpan = $(""); 89 | if (data.private) { 90 | if (data.name == Talk.username) { 91 | // you sent this 92 | prefix = "(To "+data.private+")"; 93 | msgSpan.addClass("to-private"); 94 | } else { 95 | prefix = "(From "+data.name+")"; 96 | msgSpan.addClass("private"); 97 | } 98 | } 99 | var message = prefix+": "+data.message; 100 | msgSpan.text(message); 101 | var li = Talk.addEntry(msgSpan); 102 | if (data.message.search(new RegExp(Talk.username, 'i'), "") >= 0) 103 | li.addClass("you"); 104 | var uel = $("#user-"+data.name); 105 | uel.removeClass("away"); 106 | uel.addClass("active"); 107 | }, 108 | 109 | // A new user joined the room 110 | join: function(data) { 111 | var message = data.name+" joined the channel."; 112 | var joinSpan = $(""); 113 | joinSpan.text(message); 114 | Talk.addEntry(joinSpan); 115 | if (data.name == Talk.username) { 116 | // it's YOU! 117 | var button = $("#send"); 118 | var sendMessage = function(e) { 119 | var msg = $("#message"); 120 | Talk.chat(msg.val()); 121 | msg.val(""); 122 | } 123 | button.unbind("click"); 124 | button.click(sendMessage); 125 | var messageEl = $("#message"); 126 | messageEl.unbind("keyup"); 127 | messageEl.bind("keyup", function (e) { 128 | if (e.keyCode == "13") { 129 | sendMessage(e); 130 | } 131 | }); 132 | } 133 | Talk.users(); 134 | $("#message").focus(); 135 | }, 136 | 137 | // A user left the room 138 | leave: function(data) { 139 | var message = data.name+" left the channel."; 140 | var leftSpan = $(""+message+""); 141 | Talk.addEntry(leftSpan); 142 | Talk.users(); 143 | }, 144 | 145 | // Your submitted name was invalid 146 | invalidName: function(data) { 147 | Talk.name(data.message+"\nTry again:"); 148 | }, 149 | 150 | // There was an error processing the response 151 | error: function(data) { 152 | var message = "ERROR: "+data.message; 153 | var errorSpan = $(""+message+""); 154 | Talk.addEntry(errorSpan); 155 | }, 156 | 157 | // Returning a list of users 158 | users: function(data) { 159 | var users = $("#users"); 160 | users.empty(); 161 | var privatePresent = false; 162 | for (var i=0; i"); 165 | li.attr("id", "user-"+user.name); 166 | if (user.name == Talk.username) 167 | li.addClass("you"); 168 | li.unbind("click"); 169 | if (Talk.private && Talk.private == user.name) { 170 | li.addClass("private"); 171 | privatePresent = true; 172 | li.bind("click", Talk.clearPrivate); 173 | } else { 174 | li.bind("click", function (event) { 175 | var el = event.target; 176 | var name = el.id.replace(/^user\-/, ""); 177 | Talk.addPrivate(name); 178 | }); 179 | } 180 | li.text(user.name); 181 | users.append(li); 182 | } 183 | if (!privatePresent && Talk.private) { 184 | Talk.clearPrivate(); 185 | } 186 | } 187 | 188 | }, 189 | 190 | // Setting up a private message 191 | addPrivate: function(name) { 192 | if (Talk.private) 193 | Talk.clearPrivate(); 194 | if (name == Talk.username) 195 | return; 196 | var recipient = $("#recipient"); 197 | recipient.text("To "+name+":"); 198 | recipient.addClass("private"); 199 | var el = $("#user-"+name); 200 | el.addClass("private"); 201 | Talk.private = name; 202 | el.unbind("click"); 203 | el.bind("click", Talk.clearPrivate); 204 | $("#message").focus(); 205 | }, 206 | 207 | // Clearing a private message setup 208 | clearPrivate: function() { 209 | var recipient = $("#recipient"); 210 | recipient.text(""); 211 | recipient.removeClass("private"); 212 | var el = $("#user-"+Talk.private); 213 | el.removeClass("private"); 214 | el.unbind("click"); 215 | el.bind("click", function(e) { 216 | var elthis = $(e.target); 217 | var name = elthis.attr("id").replace(/^user\-/, ""); 218 | Talk.addPrivate(name); 219 | }); 220 | Talk.private = null; 221 | $("#message").focus(); 222 | }, 223 | 224 | // Add a chat entry, whether message, notification, etc. 225 | addEntry: function(childNode) { 226 | var li = $("
  • "); 227 | li.append(childNode); 228 | var chat = $("#chat"); 229 | while(chat.children().length > Talk.MAXMESSAGES) { 230 | $(chat.children()[0]).remove(); 231 | } 232 | chat.append(li); 233 | var chatRaw = document.getElementById("chat"); 234 | chatRaw.scrollTop = chatRaw.scrollHeight; 235 | return li; 236 | }, 237 | 238 | // Set up the Talk object. 239 | init: function(options) { 240 | Talk.room = options.room; 241 | Talk.socket = new io.Socket(null, options); 242 | Talk.socket.connect(); 243 | Talk.socket.on("connect", Talk.connect); 244 | Talk.socket.on("message", Talk.receive); 245 | Talk.socket.on("disconnect", Talk.disconnect); 246 | window.onbeforeunload = Talk.quit; 247 | } 248 | 249 | }; 250 | 251 | -------------------------------------------------------------------------------- /views/index.ejs: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | Create Room 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |

    Create Room

    14 |
    15 | 18 | 19 | 20 | 21 |
    22 | 23 | 24 | -------------------------------------------------------------------------------- /views/room.ejs: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | Chat: <%= room.name %> 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |

    <%= room.name %>

    15 |
      16 |
        17 |
        18 |
        19 | 20 | 21 | 22 |
        23 | 24 | 37 | 38 | 39 | --------------------------------------------------------------------------------