mirror of https://github.com/huashengdun/webssh
886 lines
22 KiB
JavaScript
886 lines
22 KiB
JavaScript
/*jslint browser:true */
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var jQuery;
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var wssh = {};
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(function() {
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// For FormData without getter and setter
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var proto = FormData.prototype,
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data = {};
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if (!proto.get) {
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proto.get = function (name) {
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if (data[name] === undefined) {
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var input = document.querySelector('input[name="' + name + '"]'),
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value;
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if (input) {
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if (input.type === 'file') {
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value = input.files[0];
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} else {
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value = input.value;
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}
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data[name] = value;
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}
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}
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return data[name];
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};
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}
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if (!proto.set) {
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proto.set = function (name, value) {
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data[name] = value;
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};
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}
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document.querySelector('#sshlinkBtn').addEventListener("click", updateSSHlink);
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}());
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function updateSSHlink() {
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var thisPageProtocol = window.location.protocol;
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var thisPageUrl = window.location.host;
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var hostnamestr = document.getElementById("hostname").value;
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var portstr = document.getElementById("port").value;
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if (portstr == "") {
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portstr = "22"
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}
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var usrnamestr = document.getElementById("username").value;
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if (usrnamestr == "") {
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portstr = "root"
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}
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var passwdstr = document.getElementById("password").value;
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var passwdstrAfterBase64 = window.btoa(passwdstr);
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var initcmdstr = document.getElementById("initcmd").value;
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var initcmdstrAfterURI = encodeURIComponent(initcmdstr);
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var sshlinkstr;
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sshlinkstr = thisPageProtocol+"//"+thisPageUrl+"/?hostname="+hostnamestr+"&port="+portstr+"&username="+usrnamestr+"&password="+passwdstrAfterBase64+"&command="+initcmdstrAfterURI;
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document.getElementById("sshlink").innerHTML = sshlinkstr;
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}
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jQuery(function($){
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var status = $('#status'),
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button = $('.btn-primary'),
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form_container = $('.form-container'),
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waiter = $('#waiter'),
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term_type = $('#term'),
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style = {},
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default_title = 'WebSSH',
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title_element = document.querySelector('title'),
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form_id = '#connect',
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debug = document.querySelector(form_id).noValidate,
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custom_font = document.fonts ? document.fonts.values().next().value : undefined,
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default_fonts,
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DISCONNECTED = 0,
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CONNECTING = 1,
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CONNECTED = 2,
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state = DISCONNECTED,
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messages = {1: 'This client is connecting ...', 2: 'This client is already connnected.'},
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key_max_size = 16384,
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fields = ['hostname', 'port', 'username'],
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form_keys = fields.concat(['password', 'totp']),
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opts_keys = ['bgcolor', 'title', 'encoding', 'command', 'term', 'fontsize', 'fontcolor', 'cursor'],
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url_form_data = {},
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url_opts_data = {},
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validated_form_data,
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event_origin,
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hostname_tester = /((^\s*((([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]))\s*$)|(^\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*$)/;
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function store_items(names, data) {
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var i, name, value;
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for (i = 0; i < names.length; i++) {
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name = names[i];
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value = data.get(name);
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if (value){
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window.localStorage.setItem(name, value);
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}
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}
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}
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function restore_items(names) {
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var i, name, value;
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for (i=0; i < names.length; i++) {
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name = names[i];
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value = window.localStorage.getItem(name);
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if (value) {
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$('#'+name).val(value);
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}
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}
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}
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function populate_form(data) {
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var names = form_keys.concat(['passphrase']),
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i, name;
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for (i=0; i < names.length; i++) {
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name = names[i];
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$('#'+name).val(data.get(name));
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}
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}
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function get_object_length(object) {
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return Object.keys(object).length;
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}
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function decode_uri_component(uri) {
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try {
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return decodeURIComponent(uri);
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} catch(e) {
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console.error(e);
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}
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return '';
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}
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function decode_password(encoded) {
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try {
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return window.atob(encoded);
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} catch (e) {
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console.error(e);
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}
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return null;
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}
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function parse_url_data(string, form_keys, opts_keys, form_map, opts_map) {
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var i, pair, key, val,
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arr = string.split('&');
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for (i = 0; i < arr.length; i++) {
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pair = arr[i].split('=');
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key = pair[0].trim().toLowerCase();
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val = pair.slice(1).join('=').trim();
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if (form_keys.indexOf(key) >= 0) {
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form_map[key] = val;
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} else if (opts_keys.indexOf(key) >=0) {
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opts_map[key] = val;
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}
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}
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if (form_map.password) {
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form_map.password = decode_password(form_map.password);
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}
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}
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function parse_xterm_style() {
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var text = $('.xterm-helpers style').text();
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var arr = text.split('xterm-normal-char{width:');
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style.width = parseFloat(arr[1]);
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arr = text.split('div{height:');
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style.height = parseFloat(arr[1]);
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}
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function get_cell_size(term) {
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style.width = term._core._renderService._renderer.dimensions.actualCellWidth;
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style.height = term._core._renderService._renderer.dimensions.actualCellHeight;
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}
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function toggle_fullscreen(term) {
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$('#terminal .terminal').toggleClass('fullscreen');
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term.fitAddon.fit();
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}
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function current_geometry(term) {
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if (!style.width || !style.height) {
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try {
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get_cell_size(term);
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} catch (TypeError) {
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parse_xterm_style();
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}
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}
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var cols = parseInt(window.innerWidth / style.width, 10) - 1;
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var rows = parseInt(window.innerHeight / style.height, 10);
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return {'cols': cols, 'rows': rows};
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}
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function resize_terminal(term) {
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var geometry = current_geometry(term);
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term.on_resize(geometry.cols, geometry.rows);
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}
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function set_backgound_color(term, color) {
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term.setOption('theme', {
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background: color
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});
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}
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function set_font_color(term, color) {
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term.setOption('theme', {
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foreground: color
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});
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}
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function custom_font_is_loaded() {
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if (!custom_font) {
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console.log('No custom font specified.');
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} else {
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console.log('Status of custom font ' + custom_font.family + ': ' + custom_font.status);
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if (custom_font.status === 'loaded') {
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return true;
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}
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if (custom_font.status === 'unloaded') {
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return false;
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}
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}
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}
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function update_font_family(term) {
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if (term.font_family_updated) {
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console.log('Already using custom font family');
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return;
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}
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if (!default_fonts) {
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default_fonts = term.getOption('fontFamily');
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}
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if (custom_font_is_loaded()) {
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var new_fonts = custom_font.family + ', ' + default_fonts;
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term.setOption('fontFamily', new_fonts);
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term.font_family_updated = true;
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console.log('Using custom font family ' + new_fonts);
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}
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}
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function reset_font_family(term) {
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if (!term.font_family_updated) {
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console.log('Already using default font family');
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return;
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}
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if (default_fonts) {
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term.setOption('fontFamily', default_fonts);
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term.font_family_updated = false;
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console.log('Using default font family ' + default_fonts);
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}
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}
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function format_geometry(cols, rows) {
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return JSON.stringify({'cols': cols, 'rows': rows});
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}
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function read_as_text_with_decoder(file, callback, decoder) {
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var reader = new window.FileReader();
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if (decoder === undefined) {
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decoder = new window.TextDecoder('utf-8', {'fatal': true});
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}
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reader.onload = function() {
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var text;
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try {
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text = decoder.decode(reader.result);
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} catch (TypeError) {
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console.log('Decoding error happened.');
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} finally {
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if (callback) {
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callback(text);
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}
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}
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};
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reader.onerror = function (e) {
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console.error(e);
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};
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reader.readAsArrayBuffer(file);
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}
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function read_as_text_with_encoding(file, callback, encoding) {
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var reader = new window.FileReader();
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if (encoding === undefined) {
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encoding = 'utf-8';
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}
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reader.onload = function() {
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if (callback) {
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callback(reader.result);
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}
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};
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reader.onerror = function (e) {
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console.error(e);
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};
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reader.readAsText(file, encoding);
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}
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function read_file_as_text(file, callback, decoder) {
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if (!window.TextDecoder) {
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read_as_text_with_encoding(file, callback, decoder);
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} else {
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read_as_text_with_decoder(file, callback, decoder);
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}
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}
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function reset_wssh() {
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var name;
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for (name in wssh) {
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if (wssh.hasOwnProperty(name) && name !== 'connect') {
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delete wssh[name];
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}
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}
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}
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function log_status(text, to_populate) {
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console.log(text);
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status.html(text.split('\n').join('<br/>'));
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if (to_populate && validated_form_data) {
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populate_form(validated_form_data);
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validated_form_data = undefined;
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}
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if (waiter.css('display') !== 'none') {
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waiter.hide();
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}
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if (form_container.css('display') === 'none') {
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form_container.show();
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}
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}
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function ajax_complete_callback(resp) {
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button.prop('disabled', false);
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if (resp.status !== 200) {
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log_status(resp.status + ': ' + resp.statusText, true);
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state = DISCONNECTED;
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return;
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}
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var msg = resp.responseJSON;
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if (!msg.id) {
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log_status(msg.status, true);
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state = DISCONNECTED;
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return;
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}
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var ws_url = window.location.href.split(/\?|#/, 1)[0].replace('http', 'ws'),
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join = (ws_url[ws_url.length-1] === '/' ? '' : '/'),
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url = ws_url + join + 'ws?id=' + msg.id,
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sock = new window.WebSocket(url),
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encoding = 'utf-8',
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decoder = window.TextDecoder ? new window.TextDecoder(encoding) : encoding,
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terminal = document.getElementById('terminal'),
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termOptions = {
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cursorBlink: true,
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theme: {
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background: url_opts_data.bgcolor || 'black',
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foreground: url_opts_data.fontcolor || 'white',
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cursor: url_opts_data.cursor || url_opts_data.fontcolor || 'white'
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}
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};
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if (url_opts_data.fontsize) {
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var fontsize = window.parseInt(url_opts_data.fontsize);
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if (fontsize && fontsize > 0) {
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termOptions.fontSize = fontsize;
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}
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}
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var term = new window.Terminal(termOptions);
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term.fitAddon = new window.FitAddon.FitAddon();
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term.loadAddon(term.fitAddon);
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console.log(url);
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if (!msg.encoding) {
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console.log('Unable to detect the default encoding of your server');
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msg.encoding = encoding;
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} else {
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console.log('The deault encoding of your server is ' + msg.encoding);
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}
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function term_write(text) {
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if (term) {
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term.write(text);
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if (!term.resized) {
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resize_terminal(term);
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term.resized = true;
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}
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}
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}
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function set_encoding(new_encoding) {
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// for console use
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if (!new_encoding) {
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console.log('An encoding is required');
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return;
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}
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if (!window.TextDecoder) {
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decoder = new_encoding;
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encoding = decoder;
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console.log('Set encoding to ' + encoding);
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} else {
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try {
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decoder = new window.TextDecoder(new_encoding);
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encoding = decoder.encoding;
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console.log('Set encoding to ' + encoding);
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} catch (RangeError) {
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console.log('Unknown encoding ' + new_encoding);
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return false;
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}
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}
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}
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wssh.set_encoding = set_encoding;
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if (url_opts_data.encoding) {
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if (set_encoding(url_opts_data.encoding) === false) {
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set_encoding(msg.encoding);
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}
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} else {
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set_encoding(msg.encoding);
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}
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wssh.geometry = function() {
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// for console use
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var geometry = current_geometry(term);
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console.log('Current window geometry: ' + JSON.stringify(geometry));
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};
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wssh.send = function(data) {
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// for console use
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if (!sock) {
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console.log('Websocket was already closed');
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return;
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}
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if (typeof data !== 'string') {
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console.log('Only string is allowed');
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return;
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}
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try {
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JSON.parse(data);
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sock.send(data);
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} catch (SyntaxError) {
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data = data.trim() + '\r';
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sock.send(JSON.stringify({'data': data}));
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}
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};
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wssh.reset_encoding = function() {
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// for console use
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if (encoding === msg.encoding) {
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console.log('Already reset to ' + msg.encoding);
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} else {
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set_encoding(msg.encoding);
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}
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};
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wssh.resize = function(cols, rows) {
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// for console use
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if (term === undefined) {
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console.log('Terminal was already destroryed');
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return;
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}
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var valid_args = false;
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if (cols > 0 && rows > 0) {
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var geometry = current_geometry(term);
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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();
|
|
}
|
|
}
|
|
|
|
});
|