init
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index.html
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187
index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<!--
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noVNC example: lightweight example using minimal UI and features
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This is a self-contained file which doesn't import WebUtil or external CSS.
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Copyright (C) 2019 The noVNC Authors
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noVNC is licensed under the MPL 2.0 (see LICENSE.txt)
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This file is licensed under the 2-Clause BSD license (see LICENSE.txt).
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Connect parameters are provided in query string:
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http://example.com/?host=HOST&port=PORT&scale=true
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-->
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<title>noVNC</title>
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<style>
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body {
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margin: 0;
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background-color: dimgrey;
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background-image: url("dance-funny.gif");
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height: 100%;
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display: flex;
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flex-direction: column;
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background-repeat: no-repeat;
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background-position: 49%;
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background-size: contain;
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}
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html {
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height: 100%;
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}
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#top_bar {
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background-color: #6e84a3;
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color: white;
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font: bold 24px Helvetica;
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padding: 6px 5px 4px 5px;
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border-bottom: 1px outset;
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}
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#status {
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text-align: center;
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}
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#sendCtrlAltDelButton {
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position: fixed;
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top: 0px;
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right: 0px;
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border: 1px outset;
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padding: 5px 5px 4px 5px;
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cursor: pointer;
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}
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#screen {
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flex: 1; /* fill remaining space */
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overflow: hidden;
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}
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</style>
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<script type="module" crossorigin="anonymous">
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// RFB holds the API to connect and communicate with a VNC server
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import RFB from './core/rfb.js';
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let rfb;
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let desktopName;
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// When this function is called we have
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// successfully connected to a server
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function connectedToServer(e) {
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status("Connected to " + desktopName);
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document.getElementById("top_bar").setAttribute("hidden","");
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}
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// This function is called when we are disconnected
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function disconnectedFromServer(e) {
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if (e.detail.clean) {
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status("Disconnected");
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} else {
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status("Stream is closed");
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// status("Something went wrong, connection is closed");
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}
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document.getElementById("top_bar").removeAttribute("hidden");
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setTimeout(()=>{location.reload();},10000);
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}
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// When this function is called, the server requires
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// credentials to authenticate
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function credentialsAreRequired(e) {
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const password = prompt("Password Required:");
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rfb.sendCredentials({ password: password });
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}
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// When this function is called we have received
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// a desktop name from the server
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function updateDesktopName(e) {
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desktopName = e.detail.name;
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}
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// Since most operating systems will catch Ctrl+Alt+Del
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// before they get a chance to be intercepted by the browser,
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// we provide a way to emulate this key sequence.
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function sendCtrlAltDel() {
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rfb.sendCtrlAltDel();
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return false;
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}
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// Show a status text in the top bar
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function status(text) {
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document.getElementById('status').textContent = text;
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}
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// This function extracts the value of one variable from the
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// query string. If the variable isn't defined in the URL
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// it returns the default value instead.
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function readQueryVariable(name, defaultValue) {
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// A URL with a query parameter can look like this:
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// https://www.example.com?myqueryparam=myvalue
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//
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// Note that we use location.href instead of location.search
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// because Firefox < 53 has a bug w.r.t location.search
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const re = new RegExp('.*[?&]' + name + '=([^&#]*)'),
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match = document.location.href.match(re);
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if (match) {
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// We have to decode the URL since want the cleartext value
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return decodeURIComponent(match[1]);
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}
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return defaultValue;
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}
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// document.getElementById('sendCtrlAltDelButton')
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// .onclick = sendCtrlAltDel;
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// Read parameters specified in the URL query string
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// By default, use the host and port of server that served this file
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const host = readQueryVariable('host', window.location.hostname);
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let port = readQueryVariable('port', window.location.port);
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const password = readQueryVariable('password');
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const path = readQueryVariable('path', 'websockify');
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// | | | | | |
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// | | | Connect | | |
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// v v v v v v
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status("Connecting");
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// Build the websocket URL used to connect
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let url;
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if (window.location.protocol === "https:") {
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url = 'wss';
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} else {
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url = 'ws';
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}
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url += '://' + host;
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if(port) {
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url += ':' + port;
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}
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url += '/' + path;
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// Creating a new RFB object will start a new connection
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rfb = new RFB(document.getElementById('screen'), url,
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{ credentials: { password: password } });
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// Add listeners to important events from the RFB module
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rfb.addEventListener("connect", connectedToServer);
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rfb.addEventListener("disconnect", disconnectedFromServer);
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rfb.addEventListener("credentialsrequired", credentialsAreRequired);
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rfb.addEventListener("desktopname", updateDesktopName);
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// Set parameters that can be changed on an active connection
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rfb.viewOnly = readQueryVariable('view_only', true);
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rfb.remoteCursor = readQueryVariable('remote_ursor', true);
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rfb.scaleViewport = readQueryVariable('scale', true);
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</script>
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</head>
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<body>
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<div id="top_bar">
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<div id="status">Loading</div>
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</div>
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<div id="screen">
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<!-- This is where the remote screen will appear -->
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</div>
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</body>
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</html>
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