/* eslint-disable no-console */ // ssh.js const validator = require('validator'); const path = require('path'); const nodeRoot = path.dirname(require.main.filename); const publicPath = path.join(nodeRoot, 'client', 'public'); const { parseBool } = require('./util'); const config = require('./config'); exports.reauth = function reauth(req, res) { let { referer } = req.headers; if (!validator.isURL(referer, { host_whitelist: ['localhost'] })) { console.error( `WebSSH2 (${req.sessionID}) ERROR: Referrer '${referer}' for '/reauth' invalid. Setting to '/' which will probably fail.` ); referer = '/'; } res .status(401) .send( `` ); }; exports.connect = function connect(req, res) { res.sendFile(path.join(path.join(publicPath, 'client.htm'))); // capture, assign, and validate variables req.session.ssh = { host: config.ssh.host || (validator.isIP(`${req.params.host}`) && req.params.host) || (validator.isFQDN(req.params.host) && req.params.host) || (/^(([a-z]|[A-Z]|\d|[!^(){}\-_~])+)?\w$/.test(req.params.host) && req.params.host), port: (validator.isInt(`${req.query.port}`, { min: 1, max: 65535 }) && req.query.port) || config.ssh.port, localAddress: config.ssh.localAddress, localPort: config.ssh.localPort, header: { name: req.query.header || config.header.text, background: req.query.headerBackground || config.header.background, }, algorithms: config.algorithms, keepaliveInterval: config.ssh.keepaliveInterval, keepaliveCountMax: config.ssh.keepaliveCountMax, allowedSubnets: config.ssh.allowedSubnets, term: (/^(([a-z]|[A-Z]|\d|[!^(){}\-_~])+)?\w$/.test(req.query.sshterm) && req.query.sshterm) || config.ssh.term, terminal: { cursorBlink: validator.isBoolean(`${req.query.cursorBlink}`) ? parseBool(req.query.cursorBlink) : config.terminal.cursorBlink, scrollback: validator.isInt(`${req.query.scrollback}`, { min: 1, max: 200000 }) && req.query.scrollback ? req.query.scrollback : config.terminal.scrollback, tabStopWidth: validator.isInt(`${req.query.tabStopWidth}`, { min: 1, max: 100 }) && req.query.tabStopWidth ? req.query.tabStopWidth : config.terminal.tabStopWidth, bellStyle: req.query.bellStyle && ['sound', 'none'].indexOf(req.query.bellStyle) > -1 ? req.query.bellStyle : config.terminal.bellStyle, }, allowreplay: config.options.challengeButton || (validator.isBoolean(`${req.headers.allowreplay}`) ? parseBool(req.headers.allowreplay) : false), allowreauth: config.options.allowreauth || false, mrhsession: validator.isAlphanumeric(`${req.headers.mrhsession}`) && req.headers.mrhsession ? req.headers.mrhsession : 'none', serverlog: { client: config.serverlog.client || false, server: config.serverlog.server || false, }, readyTimeout: (validator.isInt(`${req.query.readyTimeout}`, { min: 1, max: 300000 }) && req.query.readyTimeout) || config.ssh.readyTimeout, }; if (req.session.ssh.header.name) validator.escape(req.session.ssh.header.name); if (req.session.ssh.header.background) validator.escape(req.session.ssh.header.background); }; exports.notfound = function notfound(_req, res) { res.status(404).send("Sorry, can't find that!"); }; exports.handleErrors = function handleErrors(err, _req, res) { console.error(err.stack); res.status(500).send('Something broke!'); };