652 lines
21 KiB
JavaScript
652 lines
21 KiB
JavaScript
/* jslint node: true */
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'use strict';
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/*
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Portions of this code for key handling heavily inspired from the following:
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https://github.com/chjj/blessed/blob/master/lib/keys.js
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chji's blessed is MIT licensed:
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----/snip/----------------------
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The MIT License (MIT)
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Copyright (c) <year> <copyright holders>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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----/snip/----------------------
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*/
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// ENiGMA½
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const term = require('./client_term.js');
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const ansi = require('./ansi_term.js');
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const User = require('./user.js');
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const Config = require('./config.js').get;
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const MenuStack = require('./menu_stack.js');
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const ACS = require('./acs.js');
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const Events = require('./events.js');
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const UserInterruptQueue = require('./user_interrupt_queue.js');
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const UserProps = require('./user_property.js');
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// deps
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const stream = require('stream');
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const assert = require('assert');
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const _ = require('lodash');
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exports.Client = Client;
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// :TODO: Move all of the key stuff to it's own module
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//
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// Resources & Standards:
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// * http://www.ansi-bbs.org/ansi-bbs-core-server.html
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//
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/* eslint-disable no-control-regex */
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const RE_DSR_RESPONSE_ANYWHERE = /(?:\u001b\[)([0-9;]+)(R)/;
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const RE_DEV_ATTR_RESPONSE_ANYWHERE = /(?:\u001b\[)[=?]([0-9a-zA-Z;]+)(c)/;
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const RE_META_KEYCODE_ANYWHERE = /(?:\u001b)([a-zA-Z0-9])/;
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const RE_META_KEYCODE = new RegExp('^' + RE_META_KEYCODE_ANYWHERE.source + '$');
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const RE_FUNCTION_KEYCODE_ANYWHERE = new RegExp(
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'(?:\u001b+)(O|N|\\[|\\[\\[)(?:' +
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[
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'(\\d+)(?:;(\\d+))?([~^$])',
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'(?:M([@ #!a`])(.)(.))', // mouse stuff
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'(?:1;)?(\\d+)?([a-zA-Z@])',
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].join('|') +
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')'
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);
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/* eslint-enable no-control-regex */
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const RE_FUNCTION_KEYCODE = new RegExp('^' + RE_FUNCTION_KEYCODE_ANYWHERE.source);
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const RE_ESC_CODE_ANYWHERE = new RegExp(
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[
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RE_FUNCTION_KEYCODE_ANYWHERE.source,
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RE_META_KEYCODE_ANYWHERE.source,
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RE_DSR_RESPONSE_ANYWHERE.source,
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RE_DEV_ATTR_RESPONSE_ANYWHERE.source,
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/\u001b./.source, // eslint-disable-line no-control-regex
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].join('|')
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);
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function Client(/*input, output*/) {
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stream.call(this);
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const self = this;
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this.user = new User();
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this.currentThemeConfig = { info: { name: 'N/A', description: 'None' } };
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this.lastActivityTime = Date.now();
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this.menuStack = new MenuStack(this);
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this.acs = new ACS({ client: this, user: this.user });
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this.interruptQueue = new UserInterruptQueue(this);
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Object.defineProperty(this, 'currentTheme', {
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get: () => {
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if (this.currentThemeConfig) {
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// :TODO: clean this up: We have a ugly transition state in which we have a pure raw config vs a ConfigLoader in which get() must be called
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try {
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return this.currentThemeConfig.get();
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} catch (e) {
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return this.currentThemeConfig;
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}
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} else {
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return {
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info: {
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name: 'N/A',
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author: 'N/A',
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description: 'N/A',
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group: 'N/A',
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},
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};
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}
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},
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set: theme => {
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this.currentThemeConfig = theme;
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},
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});
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Object.defineProperty(this, 'node', {
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get: function () {
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return self.session.id;
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},
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});
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Object.defineProperty(this, 'currentMenuModule', {
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get: function () {
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return self.menuStack.currentModule;
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},
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});
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this.setTemporaryDirectDataHandler = function (handler) {
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this.dataPassthrough = true; // let implementations do with what they will here
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this.input.removeAllListeners('data');
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this.input.on('data', handler);
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};
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this.restoreDataHandler = function () {
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this.dataPassthrough = false;
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this.input.removeAllListeners('data');
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this.input.on('data', this.dataHandler);
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};
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this.themeChangedListener = function ({ themeId }) {
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if (_.get(self.currentTheme, 'info.themeId') === themeId) {
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self.currentThemeConfig = require('./theme.js')
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.getAvailableThemes()
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.get(themeId);
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}
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};
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Events.on(Events.getSystemEvents().ThemeChanged, this.themeChangedListener);
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//
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// Peek at incoming |data| and emit events for any special
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// handling that may include:
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// * Keyboard input
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// * ANSI CSR's and the like
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//
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// References:
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// * http://www.ansi-bbs.org/ansi-bbs-core-server.html
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// * Christopher Jeffrey's Blessed library @ https://github.com/chjj/blessed/
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//
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this.getTermClient = function (deviceAttr) {
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let termClient = {
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'63;1;2': 'arctel', // http://www.fbl.cz/arctel/download/techman.pdf - Irssi ConnectBot (Android)
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'50;86;84;88': 'vtx', // https://github.com/codewar65/VTX_ClientServer/blob/master/vtx.txt
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}[deviceAttr];
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if (!termClient) {
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if (_.startsWith(deviceAttr, '67;84;101;114;109')) {
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//
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// See https://github.com/protomouse/synchronet/blob/master/src/conio/cterm.txt
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//
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// Known clients:
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// * SyncTERM
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//
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termClient = 'cterm';
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}
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}
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return termClient;
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};
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/* eslint-disable no-control-regex */
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this.isMouseInput = function (data) {
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return (
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/\x1b\[M/.test(data) ||
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/\u001b\[M([\x00\u0020-\uffff]{3})/.test(data) ||
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/\u001b\[(\d+;\d+;\d+)M/.test(data) ||
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/\u001b\[<(\d+;\d+;\d+)([mM])/.test(data) ||
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/\u001b\[<(\d+;\d+;\d+;\d+)&w/.test(data) ||
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/\u001b\[24([0135])~\[(\d+),(\d+)\]\r/.test(data) ||
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/\u001b\[(O|I)/.test(data)
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);
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};
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/* eslint-enable no-control-regex */
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this.getKeyComponentsFromCode = function (code) {
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return {
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// xterm/gnome
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OP: { name: 'f1' },
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OQ: { name: 'f2' },
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OR: { name: 'f3' },
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OS: { name: 'f4' },
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OA: { name: 'up arrow' },
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OB: { name: 'down arrow' },
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OC: { name: 'right arrow' },
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OD: { name: 'left arrow' },
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OE: { name: 'clear' },
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OF: { name: 'end' },
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OH: { name: 'home' },
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// xterm/rxvt
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'[11~': { name: 'f1' },
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'[12~': { name: 'f2' },
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'[13~': { name: 'f3' },
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'[14~': { name: 'f4' },
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'[1~': { name: 'home' },
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'[2~': { name: 'insert' },
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'[3~': { name: 'delete' },
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'[4~': { name: 'end' },
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'[5~': { name: 'page up' },
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'[6~': { name: 'page down' },
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// Cygwin & libuv
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'[[A': { name: 'f1' },
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'[[B': { name: 'f2' },
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'[[C': { name: 'f3' },
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'[[D': { name: 'f4' },
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'[[E': { name: 'f5' },
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// Common impls
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'[15~': { name: 'f5' },
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'[17~': { name: 'f6' },
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'[18~': { name: 'f7' },
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'[19~': { name: 'f8' },
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'[20~': { name: 'f9' },
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'[21~': { name: 'f10' },
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'[23~': { name: 'f11' },
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'[24~': { name: 'f12' },
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// xterm
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'[A': { name: 'up arrow' },
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'[B': { name: 'down arrow' },
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'[C': { name: 'right arrow' },
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'[D': { name: 'left arrow' },
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'[E': { name: 'clear' },
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'[F': { name: 'end' },
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'[H': { name: 'home' },
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// PuTTY
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'[[5~': { name: 'page up' },
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'[[6~': { name: 'page down' },
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// rvxt
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'[7~': { name: 'home' },
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'[8~': { name: 'end' },
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// rxvt with modifiers
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'[a': { name: 'up arrow', shift: true },
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'[b': { name: 'down arrow', shift: true },
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'[c': { name: 'right arrow', shift: true },
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'[d': { name: 'left arrow', shift: true },
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'[e': { name: 'clear', shift: true },
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'[2$': { name: 'insert', shift: true },
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'[3$': { name: 'delete', shift: true },
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'[5$': { name: 'page up', shift: true },
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'[6$': { name: 'page down', shift: true },
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'[7$': { name: 'home', shift: true },
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'[8$': { name: 'end', shift: true },
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Oa: { name: 'up arrow', ctrl: true },
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Ob: { name: 'down arrow', ctrl: true },
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Oc: { name: 'right arrow', ctrl: true },
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Od: { name: 'left arrow', ctrl: true },
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Oe: { name: 'clear', ctrl: true },
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'[2^': { name: 'insert', ctrl: true },
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'[3^': { name: 'delete', ctrl: true },
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'[5^': { name: 'page up', ctrl: true },
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'[6^': { name: 'page down', ctrl: true },
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'[7^': { name: 'home', ctrl: true },
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'[8^': { name: 'end', ctrl: true },
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// SyncTERM / EtherTerm
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'[K': { name: 'end' },
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'[@': { name: 'insert' },
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'[V': { name: 'page up' },
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'[U': { name: 'page down' },
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// other
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'[Z': { name: 'tab', shift: true },
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}[code];
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};
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this.on('data', function clientData(data) {
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// create a uniform format that can be parsed below
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if (data[0] > 127 && undefined === data[1]) {
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data[0] -= 128;
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data = '\u001b' + data.toString('utf-8');
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} else {
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data = data.toString('utf-8');
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}
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if (self.isMouseInput(data)) {
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return;
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}
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var buf = [];
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var m;
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while ((m = RE_ESC_CODE_ANYWHERE.exec(data))) {
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buf = buf.concat(data.slice(0, m.index).split(''));
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buf.push(m[0]);
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data = data.slice(m.index + m[0].length);
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}
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buf = buf.concat(data.split('')); // remainder
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buf.forEach(function bufPart(s) {
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var key = {
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seq: s,
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name: undefined,
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ctrl: false,
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meta: false,
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shift: false,
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};
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var parts;
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if ((parts = RE_DSR_RESPONSE_ANYWHERE.exec(s))) {
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if ('R' === parts[2]) {
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const cprArgs = parts[1].split(';').map(v => parseInt(v, 10) || 0);
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if (2 === cprArgs.length) {
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if (self.cprOffset) {
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cprArgs[0] = cprArgs[0] + self.cprOffset;
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cprArgs[1] = cprArgs[1] + self.cprOffset;
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}
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self.emit('cursor position report', cprArgs);
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}
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}
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} else if ((parts = RE_DEV_ATTR_RESPONSE_ANYWHERE.exec(s))) {
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assert('c' === parts[2]);
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var termClient = self.getTermClient(parts[1]);
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if (termClient) {
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self.term.termClient = termClient;
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}
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} else if ('\r' === s) {
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key.name = 'return';
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} else if ('\n' === s) {
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key.name = 'line feed';
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} else if ('\t' === s) {
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key.name = 'tab';
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} else if ('\x7f' === s) {
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//
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// Backspace vs delete is a crazy thing, especially in *nix.
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// - ANSI-BBS uses 0x7f for DEL
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// - xterm et. al clients send 0x7f for backspace... ugg.
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//
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// See http://www.hypexr.org/linux_ruboff.php
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// And a great discussion @ https://lists.debian.org/debian-i18n/1998/04/msg00015.html
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//
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if (self.term.isNixTerm()) {
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key.name = 'backspace';
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} else {
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key.name = 'delete';
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}
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} else if ('\b' === s || '\x1b\x7f' === s || '\x1b\b' === s) {
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// backspace, CTRL-H
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key.name = 'backspace';
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key.meta = '\x1b' === s.charAt(0);
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} else if ('\x1b' === s || '\x1b\x1b' === s) {
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key.name = 'escape';
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key.meta = 2 === s.length;
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} else if (' ' === s || '\x1b ' === s) {
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// rather annoying that space can come in other than just " "
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key.name = 'space';
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key.meta = 2 === s.length;
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} else if (1 === s.length && s <= '\x1a') {
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// CTRL-<letter>
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key.name = String.fromCharCode(s.charCodeAt(0) + 'a'.charCodeAt(0) - 1);
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key.ctrl = true;
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} else if (1 === s.length && s >= 'a' && s <= 'z') {
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// normal, lowercased letter
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key.name = s;
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} else if (1 === s.length && s >= 'A' && s <= 'Z') {
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key.name = s.toLowerCase();
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key.shift = true;
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} else if ((parts = RE_META_KEYCODE.exec(s))) {
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// meta with character key
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key.name = parts[1].toLowerCase();
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key.meta = true;
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key.shift = /^[A-Z]$/.test(parts[1]);
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} else if ((parts = RE_FUNCTION_KEYCODE.exec(s))) {
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var code =
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(parts[1] || '') +
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(parts[2] || '') +
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(parts[4] || '') +
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(parts[9] || '');
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var modifier = (parts[3] || parts[8] || 1) - 1;
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key.ctrl = !!(modifier & 4);
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key.meta = !!(modifier & 10);
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key.shift = !!(modifier & 1);
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key.code = code;
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_.assign(key, self.getKeyComponentsFromCode(code));
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}
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var ch;
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if (1 === s.length) {
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ch = s;
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} else if ('space' === key.name) {
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// stupid hack to always get space as a regular char
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ch = ' ';
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}
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if (_.isUndefined(key.name)) {
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key = undefined;
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} else {
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//
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// Adjust name for CTRL/Shift/Meta modifiers
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//
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key.name =
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(key.ctrl ? 'ctrl + ' : '') +
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(key.meta ? 'meta + ' : '') +
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(key.shift ? 'shift + ' : '') +
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key.name;
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}
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if (key || ch) {
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if (Config().logging.traceUserKeyboardInput) {
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self.log.trace({ key: key, ch: escape(ch) }, 'User keyboard input'); // jshint ignore:line
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}
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self.lastActivityTime = Date.now();
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if (!self.ignoreInput) {
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self.emit('key press', ch, key);
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}
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}
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});
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});
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}
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require('util').inherits(Client, stream);
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Client.prototype.setInputOutput = function (input, output) {
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this.input = input;
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this.output = output;
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this.term = new term.ClientTerminal(this.output);
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};
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Client.prototype.setTermType = function (termType) {
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this.term.env.TERM = termType;
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this.term.termType = termType;
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this.log.debug({ termType: termType }, 'Set terminal type');
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};
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Client.prototype.startIdleMonitor = function () {
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// clear existing, if any
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if (this.idleCheck) {
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this.stopIdleMonitor();
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}
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this.lastActivityTime = Date.now();
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//
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// Every 1m, check for idle.
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// We also update minutes spent online the system here,
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// if we have a authenticated user.
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//
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this.idleCheck = setInterval(() => {
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const nowMs = Date.now();
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let idleLogoutSeconds;
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if (this.user.isAuthenticated()) {
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idleLogoutSeconds = Config().users.idleLogoutSeconds;
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//
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// We don't really want to be firing off an event every 1m for
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// every user, but want at least some updates for various things
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// such as achievements. Send off every 5m.
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//
|
|
const minOnline = this.user.incrementProperty(
|
|
UserProps.MinutesOnlineTotalCount,
|
|
1
|
|
);
|
|
if (0 === minOnline % 5) {
|
|
Events.emit(Events.getSystemEvents().UserStatIncrement, {
|
|
user: this.user,
|
|
statName: UserProps.MinutesOnlineTotalCount,
|
|
statIncrementBy: 1,
|
|
statValue: minOnline,
|
|
});
|
|
}
|
|
} else {
|
|
idleLogoutSeconds = Config().users.preAuthIdleLogoutSeconds;
|
|
}
|
|
|
|
// use override value if set
|
|
idleLogoutSeconds = this.idleLogoutSecondsOverride || idleLogoutSeconds;
|
|
|
|
if (
|
|
idleLogoutSeconds > 0 &&
|
|
nowMs - this.lastActivityTime >= idleLogoutSeconds * 1000
|
|
) {
|
|
this.emit('idle timeout', idleLogoutSeconds);
|
|
}
|
|
}, 1000 * 60);
|
|
};
|
|
|
|
Client.prototype.stopIdleMonitor = function () {
|
|
if (this.idleCheck) {
|
|
clearInterval(this.idleCheck);
|
|
delete this.idleCheck;
|
|
}
|
|
};
|
|
|
|
Client.prototype.explicitActivityTimeUpdate = function () {
|
|
this.lastActivityTime = Date.now();
|
|
};
|
|
|
|
Client.prototype.overrideIdleLogoutSeconds = function (seconds) {
|
|
this.idleLogoutSecondsOverride = seconds;
|
|
};
|
|
|
|
Client.prototype.restoreIdleLogoutSeconds = function () {
|
|
delete this.idleLogoutSecondsOverride;
|
|
};
|
|
|
|
Client.prototype.end = function () {
|
|
if (this.term) {
|
|
this.term.disconnect();
|
|
}
|
|
|
|
Events.removeListener(
|
|
Events.getSystemEvents().ThemeChanged,
|
|
this.themeChangedListener
|
|
);
|
|
|
|
const currentModule = this.menuStack.getCurrentModule;
|
|
|
|
if (currentModule) {
|
|
currentModule.leave();
|
|
}
|
|
|
|
// persist time online for authenticated users
|
|
if (this.user.isAuthenticated()) {
|
|
this.user.persistProperty(
|
|
UserProps.MinutesOnlineTotalCount,
|
|
this.user.getProperty(UserProps.MinutesOnlineTotalCount)
|
|
);
|
|
}
|
|
|
|
this.stopIdleMonitor();
|
|
|
|
try {
|
|
//
|
|
// We can end up calling 'end' before TTY/etc. is established, e.g. with SSH
|
|
//
|
|
if (_.isFunction(this.disconnect)) {
|
|
return this.disconnect();
|
|
} else {
|
|
// legacy fallback
|
|
return this.output.end.apply(this.output, arguments);
|
|
}
|
|
} catch (e) {
|
|
// ie TypeError
|
|
}
|
|
};
|
|
|
|
Client.prototype.destroy = function () {
|
|
return this.output.destroy.apply(this.output, arguments);
|
|
};
|
|
|
|
Client.prototype.destroySoon = function () {
|
|
return this.output.destroySoon.apply(this.output, arguments);
|
|
};
|
|
|
|
Client.prototype.waitForKeyPress = function (cb) {
|
|
this.once('key press', function kp(ch, key) {
|
|
cb(ch, key);
|
|
});
|
|
};
|
|
|
|
Client.prototype.isLocal = function () {
|
|
// :TODO: Handle ipv6 better
|
|
return ['127.0.0.1', '::ffff:127.0.0.1'].includes(this.remoteAddress);
|
|
};
|
|
|
|
Client.prototype.friendlyRemoteAddress = function () {
|
|
if (!this.remoteAddress) {
|
|
return 'N/A';
|
|
}
|
|
|
|
// convert any :ffff: IPv4's to 32bit version
|
|
return this.remoteAddress.replace(/^::ffff:/, '').replace(/^::1$/, 'localhost');
|
|
};
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// Default error handlers
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
// :TODO: getDefaultHandler(name) -- handlers in default_handlers.js or something
|
|
Client.prototype.defaultHandlerMissingMod = function () {
|
|
var self = this;
|
|
|
|
function handler(err) {
|
|
self.log.error(err);
|
|
|
|
self.term.write(ansi.resetScreen());
|
|
self.term.write('An unrecoverable error has been encountered!\n');
|
|
self.term.write('This has been logged for your SysOp to review.\n');
|
|
self.term.write('\nGoodbye!\n');
|
|
|
|
//self.term.write(err);
|
|
|
|
//if(miscUtil.isDevelopment() && err.stack) {
|
|
// self.term.write('\n' + err.stack + '\n');
|
|
//}
|
|
|
|
self.end();
|
|
}
|
|
|
|
return handler;
|
|
};
|
|
|
|
Client.prototype.terminalSupports = function (query) {
|
|
const termClient = this.term.termClient;
|
|
|
|
switch (query) {
|
|
case 'vtx_audio':
|
|
// https://github.com/codewar65/VTX_ClientServer/blob/master/vtx.txt
|
|
return 'vtx' === termClient;
|
|
|
|
case 'vtx_hyperlink':
|
|
return 'vtx' === termClient;
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
};
|