webssh/webssh/static/js/main.js

886 lines
22 KiB
JavaScript

/*jslint browser:true */
var jQuery;
var wssh = {};
(function() {
// For FormData without getter and setter
var proto = FormData.prototype,
data = {};
if (!proto.get) {
proto.get = function (name) {
if (data[name] === undefined) {
var input = document.querySelector('input[name="' + name + '"]'),
value;
if (input) {
if (input.type === 'file') {
value = input.files[0];
} else {
value = input.value;
}
data[name] = value;
}
}
return data[name];
};
}
if (!proto.set) {
proto.set = function (name, value) {
data[name] = value;
};
}
document.querySelector('#sshlinkBtn').addEventListener("click", updateSSHlink);
}());
function updateSSHlink() {
var thisPageProtocol = window.location.protocol;
var thisPageUrl = window.location.host;
var hostnamestr = document.getElementById("hostname").value;
var portstr = document.getElementById("port").value;
if (portstr == "") {
portstr = "22"
}
var usrnamestr = document.getElementById("username").value;
if (usrnamestr == "") {
portstr = "root"
}
var passwdstr = document.getElementById("password").value;
var passwdstrAfterBase64 = window.btoa(passwdstr);
var initcmdstr = document.getElementById("initcmd").value;
var initcmdstrAfterURI = encodeURIComponent(initcmdstr);
var sshlinkstr;
sshlinkstr = thisPageProtocol+"//"+thisPageUrl+"/?hostname="+hostnamestr+"&port="+portstr+"&username="+usrnamestr+"&password="+passwdstrAfterBase64+"&command="+initcmdstrAfterURI;
document.getElementById("sshlink").innerHTML = sshlinkstr;
}
jQuery(function($){
var status = $('#status'),
button = $('.btn-primary'),
form_container = $('.form-container'),
waiter = $('#waiter'),
term_type = $('#term'),
style = {},
default_title = 'WebSSH',
title_element = document.querySelector('title'),
form_id = '#connect',
debug = document.querySelector(form_id).noValidate,
custom_font = document.fonts ? document.fonts.values().next().value : undefined,
default_fonts,
DISCONNECTED = 0,
CONNECTING = 1,
CONNECTED = 2,
state = DISCONNECTED,
messages = {1: 'This client is connecting ...', 2: 'This client is already connnected.'},
key_max_size = 16384,
fields = ['hostname', 'port', 'username'],
form_keys = fields.concat(['password', 'totp']),
opts_keys = ['bgcolor', 'title', 'encoding', 'command', 'term', 'fontsize', 'fontcolor', 'cursor'],
url_form_data = {},
url_opts_data = {},
validated_form_data,
event_origin,
hostname_tester = /((^\s*((([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]))\s*$)|(^\s*((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:))|(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}))|:)))(%.+)?\s*$))|(^\s*((?=.{1,255}$)(?=.*[A-Za-z].*)[0-9A-Za-z](?:(?:[0-9A-Za-z]|\b-){0,61}[0-9A-Za-z])?(?:\.[0-9A-Za-z](?:(?:[0-9A-Za-z]|\b-){0,61}[0-9A-Za-z])?)*)\s*$)/;
function store_items(names, data) {
var i, name, value;
for (i = 0; i < names.length; i++) {
name = names[i];
value = data.get(name);
if (value){
window.localStorage.setItem(name, value);
}
}
}
function restore_items(names) {
var i, name, value;
for (i=0; i < names.length; i++) {
name = names[i];
value = window.localStorage.getItem(name);
if (value) {
$('#'+name).val(value);
}
}
}
function populate_form(data) {
var names = form_keys.concat(['passphrase']),
i, name;
for (i=0; i < names.length; i++) {
name = names[i];
$('#'+name).val(data.get(name));
}
}
function get_object_length(object) {
return Object.keys(object).length;
}
function decode_uri_component(uri) {
try {
return decodeURIComponent(uri);
} catch(e) {
console.error(e);
}
return '';
}
function decode_password(encoded) {
try {
return window.atob(encoded);
} catch (e) {
console.error(e);
}
return null;
}
function parse_url_data(string, form_keys, opts_keys, form_map, opts_map) {
var i, pair, key, val,
arr = string.split('&');
for (i = 0; i < arr.length; i++) {
pair = arr[i].split('=');
key = pair[0].trim().toLowerCase();
val = pair.slice(1).join('=').trim();
if (form_keys.indexOf(key) >= 0) {
form_map[key] = val;
} else if (opts_keys.indexOf(key) >=0) {
opts_map[key] = val;
}
}
if (form_map.password) {
form_map.password = decode_password(form_map.password);
}
}
function parse_xterm_style() {
var text = $('.xterm-helpers style').text();
var arr = text.split('xterm-normal-char{width:');
style.width = parseFloat(arr[1]);
arr = text.split('div{height:');
style.height = parseFloat(arr[1]);
}
function get_cell_size(term) {
style.width = term._core._renderService._renderer.dimensions.actualCellWidth;
style.height = term._core._renderService._renderer.dimensions.actualCellHeight;
}
function toggle_fullscreen(term) {
$('#terminal .terminal').toggleClass('fullscreen');
term.fitAddon.fit();
}
function current_geometry(term) {
if (!style.width || !style.height) {
try {
get_cell_size(term);
} catch (TypeError) {
parse_xterm_style();
}
}
var cols = parseInt(window.innerWidth / style.width, 10) - 1;
var rows = parseInt(window.innerHeight / style.height, 10);
return {'cols': cols, 'rows': rows};
}
function resize_terminal(term) {
var geometry = current_geometry(term);
term.on_resize(geometry.cols, geometry.rows);
}
function set_backgound_color(term, color) {
term.setOption('theme', {
background: color
});
}
function set_font_color(term, color) {
term.setOption('theme', {
foreground: color
});
}
function custom_font_is_loaded() {
if (!custom_font) {
console.log('No custom font specified.');
} else {
console.log('Status of custom font ' + custom_font.family + ': ' + custom_font.status);
if (custom_font.status === 'loaded') {
return true;
}
if (custom_font.status === 'unloaded') {
return false;
}
}
}
function update_font_family(term) {
if (term.font_family_updated) {
console.log('Already using custom font family');
return;
}
if (!default_fonts) {
default_fonts = term.getOption('fontFamily');
}
if (custom_font_is_loaded()) {
var new_fonts = custom_font.family + ', ' + default_fonts;
term.setOption('fontFamily', new_fonts);
term.font_family_updated = true;
console.log('Using custom font family ' + new_fonts);
}
}
function reset_font_family(term) {
if (!term.font_family_updated) {
console.log('Already using default font family');
return;
}
if (default_fonts) {
term.setOption('fontFamily', default_fonts);
term.font_family_updated = false;
console.log('Using default font family ' + default_fonts);
}
}
function format_geometry(cols, rows) {
return JSON.stringify({'cols': cols, 'rows': rows});
}
function read_as_text_with_decoder(file, callback, decoder) {
var reader = new window.FileReader();
if (decoder === undefined) {
decoder = new window.TextDecoder('utf-8', {'fatal': true});
}
reader.onload = function() {
var text;
try {
text = decoder.decode(reader.result);
} catch (TypeError) {
console.log('Decoding error happened.');
} finally {
if (callback) {
callback(text);
}
}
};
reader.onerror = function (e) {
console.error(e);
};
reader.readAsArrayBuffer(file);
}
function read_as_text_with_encoding(file, callback, encoding) {
var reader = new window.FileReader();
if (encoding === undefined) {
encoding = 'utf-8';
}
reader.onload = function() {
if (callback) {
callback(reader.result);
}
};
reader.onerror = function (e) {
console.error(e);
};
reader.readAsText(file, encoding);
}
function read_file_as_text(file, callback, decoder) {
if (!window.TextDecoder) {
read_as_text_with_encoding(file, callback, decoder);
} else {
read_as_text_with_decoder(file, callback, decoder);
}
}
function reset_wssh() {
var name;
for (name in wssh) {
if (wssh.hasOwnProperty(name) && name !== 'connect') {
delete wssh[name];
}
}
}
function log_status(text, to_populate) {
console.log(text);
status.html(text.split('\n').join('<br/>'));
if (to_populate && validated_form_data) {
populate_form(validated_form_data);
validated_form_data = undefined;
}
if (waiter.css('display') !== 'none') {
waiter.hide();
}
if (form_container.css('display') === 'none') {
form_container.show();
}
}
function ajax_complete_callback(resp) {
button.prop('disabled', false);
if (resp.status !== 200) {
log_status(resp.status + ': ' + resp.statusText, true);
state = DISCONNECTED;
return;
}
var msg = resp.responseJSON;
if (!msg.id) {
log_status(msg.status, true);
state = DISCONNECTED;
return;
}
var ws_url = window.location.href.split(/\?|#/, 1)[0].replace('http', 'ws'),
join = (ws_url[ws_url.length-1] === '/' ? '' : '/'),
url = ws_url + join + 'ws?id=' + msg.id,
sock = new window.WebSocket(url),
encoding = 'utf-8',
decoder = window.TextDecoder ? new window.TextDecoder(encoding) : encoding,
terminal = document.getElementById('terminal'),
termOptions = {
cursorBlink: true,
theme: {
background: url_opts_data.bgcolor || 'black',
foreground: url_opts_data.fontcolor || 'white',
cursor: url_opts_data.cursor || url_opts_data.fontcolor || 'white'
}
};
if (url_opts_data.fontsize) {
var fontsize = window.parseInt(url_opts_data.fontsize);
if (fontsize && fontsize > 0) {
termOptions.fontSize = fontsize;
}
}
var term = new window.Terminal(termOptions);
term.fitAddon = new window.FitAddon.FitAddon();
term.loadAddon(term.fitAddon);
console.log(url);
if (!msg.encoding) {
console.log('Unable to detect the default encoding of your server');
msg.encoding = encoding;
} else {
console.log('The deault encoding of your server is ' + msg.encoding);
}
function term_write(text) {
if (term) {
term.write(text);
if (!term.resized) {
resize_terminal(term);
term.resized = true;
}
}
}
function set_encoding(new_encoding) {
// for console use
if (!new_encoding) {
console.log('An encoding is required');
return;
}
if (!window.TextDecoder) {
decoder = new_encoding;
encoding = decoder;
console.log('Set encoding to ' + encoding);
} else {
try {
decoder = new window.TextDecoder(new_encoding);
encoding = decoder.encoding;
console.log('Set encoding to ' + encoding);
} catch (RangeError) {
console.log('Unknown encoding ' + new_encoding);
return false;
}
}
}
wssh.set_encoding = set_encoding;
if (url_opts_data.encoding) {
if (set_encoding(url_opts_data.encoding) === false) {
set_encoding(msg.encoding);
}
} else {
set_encoding(msg.encoding);
}
wssh.geometry = function() {
// for console use
var geometry = current_geometry(term);
console.log('Current window geometry: ' + JSON.stringify(geometry));
};
wssh.send = function(data) {
// for console use
if (!sock) {
console.log('Websocket was already closed');
return;
}
if (typeof data !== 'string') {
console.log('Only string is allowed');
return;
}
try {
JSON.parse(data);
sock.send(data);
} catch (SyntaxError) {
data = data.trim() + '\r';
sock.send(JSON.stringify({'data': data}));
}
};
wssh.reset_encoding = function() {
// for console use
if (encoding === msg.encoding) {
console.log('Already reset to ' + msg.encoding);
} else {
set_encoding(msg.encoding);
}
};
wssh.resize = function(cols, rows) {
// for console use
if (term === undefined) {
console.log('Terminal was already destroryed');
return;
}
var valid_args = false;
if (cols > 0 && rows > 0) {
var geometry = current_geometry(term);
if (cols <= geometry.cols && rows <= geometry.rows) {
valid_args = true;
}
}
if (!valid_args) {
console.log('Unable to resize terminal to geometry: ' + format_geometry(cols, rows));
} else {
term.on_resize(cols, rows);
}
};
wssh.set_bgcolor = function(color) {
set_backgound_color(term, color);
};
wssh.set_fontcolor = function(color) {
set_font_color(term, color);
};
wssh.custom_font = function() {
update_font_family(term);
};
wssh.default_font = function() {
reset_font_family(term);
};
term.on_resize = function(cols, rows) {
if (cols !== this.cols || rows !== this.rows) {
console.log('Resizing terminal to geometry: ' + format_geometry(cols, rows));
this.resize(cols, rows);
sock.send(JSON.stringify({'resize': [cols, rows]}));
}
};
term.onData(function(data) {
// console.log(data);
sock.send(JSON.stringify({'data': data}));
});
sock.onopen = function() {
term.open(terminal);
toggle_fullscreen(term);
update_font_family(term);
term.focus();
state = CONNECTED;
title_element.text = url_opts_data.title || default_title;
if (url_opts_data.command) {
setTimeout(function () {
sock.send(JSON.stringify({'data': url_opts_data.command+'\r'}));
}, 500);
}
};
sock.onmessage = function(msg) {
read_file_as_text(msg.data, term_write, decoder);
};
sock.onerror = function(e) {
console.error(e);
};
sock.onclose = function(e) {
term.dispose();
term = undefined;
sock = undefined;
reset_wssh();
log_status(e.reason, true);
state = DISCONNECTED;
default_title = 'WebSSH';
title_element.text = default_title;
};
$(window).resize(function(){
if (term) {
resize_terminal(term);
}
});
}
function wrap_object(opts) {
var obj = {};
obj.get = function(attr) {
return opts[attr] || '';
};
obj.set = function(attr, val) {
opts[attr] = val;
};
return obj;
}
function clean_data(data) {
var i, attr, val;
var attrs = form_keys.concat(['privatekey', 'passphrase']);
for (i = 0; i < attrs.length; i++) {
attr = attrs[i];
val = data.get(attr);
if (typeof val === 'string') {
data.set(attr, val.trim());
}
}
}
function validate_form_data(data) {
clean_data(data);
var hostname = data.get('hostname'),
port = data.get('port'),
username = data.get('username'),
pk = data.get('privatekey'),
result = {
valid: false,
data: data,
title: ''
},
errors = [], size;
if (!hostname) {
errors.push('Value of hostname is required.');
} else {
if (!hostname_tester.test(hostname)) {
errors.push('Invalid hostname: ' + hostname);
}
}
if (!port) {
port = 22;
} else {
if (!(port > 0 && port <= 65535)) {
errors.push('Invalid port: ' + port);
}
}
if (!username) {
errors.push('Value of username is required.');
}
if (pk) {
size = pk.size || pk.length;
if (size > key_max_size) {
errors.push('Invalid private key: ' + pk.name || '');
}
}
if (!errors.length || debug) {
result.valid = true;
result.title = username + '@' + hostname + ':' + port;
}
result.errors = errors;
return result;
}
// Fix empty input file ajax submission error for safari 11.x
function disable_file_inputs(inputs) {
var i, input;
for (i = 0; i < inputs.length; i++) {
input = inputs[i];
if (input.files.length === 0) {
input.setAttribute('disabled', '');
}
}
}
function enable_file_inputs(inputs) {
var i;
for (i = 0; i < inputs.length; i++) {
inputs[i].removeAttribute('disabled');
}
}
function connect_without_options() {
// use data from the form
var form = document.querySelector(form_id),
inputs = form.querySelectorAll('input[type="file"]'),
url = form.action,
data, pk;
disable_file_inputs(inputs);
data = new FormData(form);
pk = data.get('privatekey');
enable_file_inputs(inputs);
function ajax_post() {
status.text('');
button.prop('disabled', true);
$.ajax({
url: url,
type: 'post',
data: data,
complete: ajax_complete_callback,
cache: false,
contentType: false,
processData: false
});
}
var result = validate_form_data(data);
if (!result.valid) {
log_status(result.errors.join('\n'));
return;
}
if (pk && pk.size && !debug) {
read_file_as_text(pk, function(text) {
if (text === undefined) {
log_status('Invalid private key: ' + pk.name);
} else {
ajax_post();
}
});
} else {
ajax_post();
}
return result;
}
function connect_with_options(data) {
// use data from the arguments
var form = document.querySelector(form_id),
url = data.url || form.action,
_xsrf = form.querySelector('input[name="_xsrf"]');
var result = validate_form_data(wrap_object(data));
if (!result.valid) {
log_status(result.errors.join('\n'));
return;
}
data.term = term_type.val();
data._xsrf = _xsrf.value;
if (event_origin) {
data._origin = event_origin;
}
status.text('');
button.prop('disabled', true);
$.ajax({
url: url,
type: 'post',
data: data,
complete: ajax_complete_callback
});
return result;
}
function connect(hostname, port, username, password, privatekey, passphrase, totp) {
// for console use
var result, opts;
if (state !== DISCONNECTED) {
console.log(messages[state]);
return;
}
if (hostname === undefined) {
result = connect_without_options();
} else {
if (typeof hostname === 'string') {
opts = {
hostname: hostname,
port: port,
username: username,
password: password,
privatekey: privatekey,
passphrase: passphrase,
totp: totp
};
} else {
opts = hostname;
}
result = connect_with_options(opts);
}
if (result) {
state = CONNECTING;
default_title = result.title;
if (hostname) {
validated_form_data = result.data;
}
store_items(fields, result.data);
}
}
wssh.connect = connect;
$(form_id).submit(function(event){
event.preventDefault();
connect();
});
function cross_origin_connect(event)
{
console.log(event.origin);
var prop = 'connect',
args;
try {
args = JSON.parse(event.data);
} catch (SyntaxError) {
args = event.data.split('|');
}
if (!Array.isArray(args)) {
args = [args];
}
try {
event_origin = event.origin;
wssh[prop].apply(wssh, args);
} finally {
event_origin = undefined;
}
}
window.addEventListener('message', cross_origin_connect, false);
if (document.fonts) {
document.fonts.ready.then(
function () {
if (custom_font_is_loaded() === false) {
document.body.style.fontFamily = custom_font.family;
}
}
);
}
parse_url_data(
decode_uri_component(window.location.search.substring(1)) + '&' + decode_uri_component(window.location.hash.substring(1)),
form_keys, opts_keys, url_form_data, url_opts_data
);
// console.log(url_form_data);
// console.log(url_opts_data);
if (url_opts_data.term) {
term_type.val(url_opts_data.term);
}
if (url_form_data.password === null) {
log_status('Password via url must be encoded in base64.');
} else {
if (get_object_length(url_form_data)) {
waiter.show();
connect(url_form_data);
} else {
restore_items(fields);
form_container.show();
}
}
});