forked from novnc/noVNC
-
Notifications
You must be signed in to change notification settings - Fork 0
/
vnc_lite.html
187 lines (158 loc) · 6.15 KB
/
vnc_lite.html
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
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
<!DOCTYPE html>
<html lang="en">
<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) 2019 The noVNC Authors
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>
<style>
body {
margin: 0;
background-color: dimgrey;
height: 100%;
display: flex;
flex-direction: column;
}
html {
height: 100%;
}
#top_bar {
background-color: #6e84a3;
color: white;
font: bold 12px Helvetica;
padding: 6px 5px 4px 5px;
border-bottom: 1px outset;
}
#status {
text-align: center;
}
#sendCtrlAltDelButton {
position: fixed;
top: 0px;
right: 0px;
border: 1px outset;
padding: 5px 5px 4px 5px;
cursor: pointer;
}
#screen {
flex: 1; /* fill remaining space */
overflow: hidden;
}
</style>
<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
// successfully connected to a server
function connectedToServer(e) {
status("Connected to " + desktopName);
}
// This function is called when we are disconnected
function disconnectedFromServer(e) {
if (e.detail.clean) {
status("Disconnected");
} else {
status("Something went wrong, connection is closed");
}
}
// When this function is called, the server requires
// credentials to authenticate
function credentialsAreRequired(e) {
const password = prompt("Password Required:");
rfb.sendCredentials({ password: password });
}
// When this function is called we have received
// a desktop name from the server
function updateDesktopName(e) {
desktopName = e.detail.name;
}
// 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('status').textContent = text;
}
// 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 (But will most probably get logged on the http server):
// https://www.example.com?myqueryparam=myvalue
//
// For privacy (Using a hastag #, the parameters will not be sent to the server)
// the url can be requested in the following way:
// https://www.example.com#myqueryparam=myvalue&password=secreatvalue
//
// Even Mixing public and non public parameters will work:
// https://www.example.com?nonsecretparam=example.com#password=secreatvalue
//
// 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 = ''.concat(document.location.href, window.location.hash).match(re);
if (match) {
// We have to decode the URL since want the cleartext value
return decodeURIComponent(match[1]);
}
return defaultValue;
}
document.getElementById('sendCtrlAltDelButton')
.>
// 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.getElementById('screen'), url,
{ credentials: { password: password } });
// Add listeners to important events from the RFB module
rfb.addEventListener("connect", connectedToServer);
rfb.addEventListener("disconnect", disconnectedFromServer);
rfb.addEventListener("credentialsrequired", credentialsAreRequired);
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="top_bar">
<div id="status">Loading</div>
<div id="sendCtrlAltDelButton">Send CtrlAltDel</div>
</div>
<div id="screen">
<!-- This is where the remote screen will appear -->
</div>
</body>
</html>