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<!DOCTYPE html>
<html>
<head>
<!--
noVNC example: lightweight example using minimal UI and features
This is a self-contained file which doesn't import WebUtil or external CSS.
Copyright (C) 2012 Joel Martin
Copyright (C) 2018 Samuel Mannehed for Cendio AB
noVNC is licensed under the MPL 2.0 (see LICENSE.txt)
This file is licensed under the 2-Clause BSD license (see LICENSE.txt).
Connect parameters are provided in query string:
http://example.com/?host=HOST&port=PORT&scale=true
-->
<title>noVNC</title>
<meta charset="utf-8">
<!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
Remove this if you use the .htaccess -->
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<style type="text/css">
body {
margin: 0;
background-color: dimgrey;
height: 100%;
display: flex;
flex-direction: column;
}
html {
height: 100%;
}
#noVNC_status_bar {
background-color: #6e84a3;
width: 100%;
display: flex;
justify-content: space-between;
border-bottom: 1px outset;
}
#noVNC_status {
color: #ffffff;
font: bold 12px Helvetica;
margin: auto;
}
#noVNC_left_dummy_elem {
flex: 1;
}
#noVNC_buttons {
padding: 1px;
flex: 1;
display: flex;
justify-content: flex-end;
}
</style>
<!-- Promise polyfill for IE11 -->
<script src="vendor/promise.js"></script>
<!-- ES2015/ES6 modules polyfill -->
<script type="module">
window._noVNC_has_module_support = true;
</script>
<script>
window.addEventListener("load", function() {
if (window._noVNC_has_module_support) return;
const loader = document.createElement("script");
loader.src = "vendor/browser-es-module-loader/dist/browser-es-module-loader.js";
document.head.appendChild(loader);
});
</script>
<!-- actual script modules -->
<script type="module" crossorigin="anonymous">
// RFB holds the API to connect and communicate with a VNC server
import RFB from './core/rfb.js';
let rfb;
let desktopName;
// When this function is called we have received
// a desktop name from the server
function updateDesktopName(e) {
desktopName = e.detail.name;
}
// When this function is called, the server requires
// credentials to authenticate
function credentials(e) {
// Let's create a password input
const form = document.createElement('form');
form.innerHTML = '<label></label>';
form.innerHTML += '<input type=password size=10 id="password_input">';
form.onsubmit = setPassword;
// Bypass status() because it sets text content
// which doesn't allow adding elements
document.getElementById('noVNC_status').innerHTML = '';
document.getElementById('noVNC_status').appendChild(form);
document.getElementById('noVNC_status').querySelector('label').textContent = 'Password Required: ';
}
// Send the credentials from the input element
function setPassword() {
rfb.sendCredentials({ password: document.getElementById('password_input').value });
return false;
}
// Since most operating systems will catch Ctrl+Alt+Del
// before they get a chance to be intercepted by the browser,
// we provide a way to emulate this key sequence.
function sendCtrlAltDel() {
rfb.sendCtrlAltDel();
return false;
}
// Show a status text in the top bar
function status(text) {
document.getElementById('noVNC_status').textContent = text;
}
// When this function is called we have
// successfully connected to a server
function connected(e) {
document.getElementById('sendCtrlAltDelButton').disabled = false;
status("Connected to " + desktopName);
}
// This function is called when we are disconnected
function disconnected(e) {
document.getElementById('sendCtrlAltDelButton').disabled = true;
if (e.detail.clean) {
status("Disconnected");
} else {
status("Something went wrong, connection is closed");
}
}
// This function extracts the value of one variable from the
// query string. If the variable isn't defined in the URL
// it returns the default value instead.
function readQueryVariable(name, defaultValue) {
// A URL with a query parameter can look like this:
// https://www.example.com?myqueryparam=myvalue
//
// Note that we use location.href instead of location.search
// because Firefox < 53 has a bug w.r.t location.search
const re = new RegExp('.*[?&]' + name + '=([^&#]*)'),
match = document.location.href.match(re);
if (typeof defaultValue === 'undefined') { defaultValue = null; }
if (match) {
// We have to decode the URL since want the cleartext value
return decodeURIComponent(match[1]);
}
return defaultValue;
}
document.getElementById('sendCtrlAltDelButton').onclick = sendCtrlAltDel;
// Read parameters specified in the URL query string
// By default, use the host and port of server that served this file
const host = readQueryVariable('host', window.location.hostname);
let port = readQueryVariable('port', window.location.port);
const password = readQueryVariable('password', '');
const path = readQueryVariable('path', 'websockify');
// | | | | | |
// | | | Connect | | |
// v v v v v v
status("Connecting");
// Build the websocket URL used to connect
let url;
if (window.location.protocol === "https:") {
url = 'wss';
} else {
url = 'ws';
}
url += '://' + host;
if(port) {
url += ':' + port;
}
url += '/' + path;
// Creating a new RFB object will start a new connection
rfb = new RFB(document.body, url,
{ credentials: { password: password } });
// Add listeners to important events from the RFB module
rfb.addEventListener("connect", connected);
rfb.addEventListener("disconnect", disconnected);
rfb.addEventListener("credentialsrequired", credentials);
rfb.addEventListener("desktopname", updateDesktopName);
// Set parameters that can be changed on an active connection
rfb.viewOnly = readQueryVariable('view_only', false);
rfb.scaleViewport = readQueryVariable('scale', false);
</script>
</head>
<body>
<div id="noVNC_status_bar">
<div id="noVNC_left_dummy_elem"></div>
<div id="noVNC_status">Loading</div>
<div id="noVNC_buttons">
<input type=button value="Send CtrlAltDel"
id="sendCtrlAltDelButton">
</div>
</div>
</body>
</html>
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