From 0740711fdeadb4765a2e1f495ed85b4846ef926f Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Sun, 23 Jun 2019 12:42:22 +0200
Subject: Began presentation

---
 presentation/plugin/multiplex/client.js    | 15 +++++++
 presentation/plugin/multiplex/index.js     | 64 ++++++++++++++++++++++++++++++
 presentation/plugin/multiplex/master.js    | 36 +++++++++++++++++
 presentation/plugin/multiplex/package.json | 19 +++++++++
 4 files changed, 134 insertions(+)
 create mode 100644 presentation/plugin/multiplex/client.js
 create mode 100644 presentation/plugin/multiplex/index.js
 create mode 100644 presentation/plugin/multiplex/master.js
 create mode 100644 presentation/plugin/multiplex/package.json

(limited to 'presentation/plugin/multiplex')

diff --git a/presentation/plugin/multiplex/client.js b/presentation/plugin/multiplex/client.js
new file mode 100644
index 0000000..f2af3cc
--- /dev/null
+++ b/presentation/plugin/multiplex/client.js
@@ -0,0 +1,15 @@
+(function () {
+    var multiplex = Reveal.getConfig().multiplex;
+    var socketId = multiplex.id;
+    var socket = io.connect(multiplex.url);
+
+    socket.on(multiplex.id, function (data) {
+        // ignore data from sockets that aren't ours
+        if (data.socketId !== socketId) {
+            return;
+        }
+        if (window.location.host === 'localhost:1947') return;
+
+        Reveal.setState(data.state);
+    });
+}());
diff --git a/presentation/plugin/multiplex/index.js b/presentation/plugin/multiplex/index.js
new file mode 100644
index 0000000..b4f3c7f
--- /dev/null
+++ b/presentation/plugin/multiplex/index.js
@@ -0,0 +1,64 @@
+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);
\ No newline at end of file
diff --git a/presentation/plugin/multiplex/master.js b/presentation/plugin/multiplex/master.js
new file mode 100644
index 0000000..df7a68c
--- /dev/null
+++ b/presentation/plugin/multiplex/master.js
@@ -0,0 +1,36 @@
+(function () {
+
+    // Don't emit events from inside of notes windows
+    if (window.location.search.match(/receiver/gi)) {
+        return;
+    }
+
+    var multiplex = Reveal.getConfig().multiplex;
+
+    var socket = io.connect(multiplex.url);
+
+    function post() {
+
+        var messageData = {
+            state: Reveal.getState(),
+            secret: multiplex.secret,
+            socketId: multiplex.id
+        };
+
+        socket.emit('multiplex-statechanged', messageData);
+
+    }
+
+    // post once the page is loaded, so the client follows also on "open URL".
+    window.addEventListener('load', post);
+
+    // Monitor events that trigger a change in state
+    Reveal.addEventListener('slidechanged', post);
+    Reveal.addEventListener('fragmentshown', post);
+    Reveal.addEventListener('fragmenthidden', post);
+    Reveal.addEventListener('overviewhidden', post);
+    Reveal.addEventListener('overviewshown', post);
+    Reveal.addEventListener('paused', post);
+    Reveal.addEventListener('resumed', post);
+
+}());
diff --git a/presentation/plugin/multiplex/package.json b/presentation/plugin/multiplex/package.json
new file mode 100644
index 0000000..bbed77a
--- /dev/null
+++ b/presentation/plugin/multiplex/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "reveal-js-multiplex",
+  "version": "1.0.0",
+  "description": "reveal.js multiplex server",
+  "homepage": "http://revealjs.com",
+  "scripts": {
+    "start": "node index.js"
+  },
+  "engines": {
+    "node": "~4.1.1"
+  },
+  "dependencies": {
+    "express": "~4.13.3",
+    "grunt-cli": "~0.1.13",
+    "mustache": "~2.2.1",
+    "socket.io": "~1.3.7"
+  },
+  "license": "MIT"
+}
-- 
cgit v1.2.3