var http = require('http'); var express = require('express'); var fs = require('fs'); var io = require('socket.io'); var crypto = require('crypto'); var app = express(); var staticDir = express.static; var server = http.createServer(app); io = io(server); var opts = { port: process.env.PORT || 1948, baseDir : __dirname + '/../../' }; io.on( 'connection', function( socket ) { socket.on('multiplex-statechanged', function(data) { if (typeof data.secret == 'undefined' || data.secret == null || data.secret === '') return; if (createHash(data.secret) === data.socketId) { data.secret = null; socket.broadcast.emit(data.socketId, data); }; }); }); [ 'css', 'js', 'plugin', 'lib' ].forEach(function(dir) { app.use('/' + dir, staticDir(opts.baseDir + dir)); }); app.get("/", function(req, res) { res.writeHead(200, {'Content-Type': 'text/html'}); var stream = fs.createReadStream(opts.baseDir + '/index.html'); stream.on('error', function( error ) { res.write('

reveal.js multiplex server.

Generate token'); res.end(); }); stream.on('readable', function() { stream.pipe(res); }); }); app.get("/token", function(req,res) { var ts = new Date().getTime(); var rand = new Uint32Array(1); window.crypto.getRandomValues(rand) var secret = ts.toString() + rand.toString(); res.send({secret: secret, socketId: createHash(secret)}); }); var createHash = function(secret) { var cipher = crypto.createCipher('blowfish', secret); return(cipher.final('hex')); }; // Actually listen server.listen( opts.port || null ); var brown = '\033[33m', green = '\033[32m', reset = '\033[0m'; console.log( brown + "reveal.js:" + reset + " Multiplex running on port " + green + opts.port + reset );