1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
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('<style>body{font-family: sans-serif;}</style><h2>reveal.js multiplex server.</h2><a href="/token">Generate token</a>');
res.end();
});
stream.on('readable', function() {
stream.pipe(res);
});
});
app.get("/token", function(req,res) {
var ts = new Date().getTime();
var rand = Math.floor(Math.random()*9999999);
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 );
|
