207 lines
10 KiB
JavaScript
207 lines
10 KiB
JavaScript
/*
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Copyright 2020-2021 Intel Corporation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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@description MeshCentral Server IDER handler
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@author Ylian Saint-Hilaire
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@version v0.3.0
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*/
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/*jslint node: true */
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/*jshint node: true */
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/*jshint strict:false */
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/*jshint -W097 */
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/*jshint esversion: 6 */
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"use strict";
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// Construct a MeshAgent object, called upon connection
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module.exports.CreateAmtIderSession = function (parent, db, ws, req, args, domain, user) {
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const fs = require('fs');
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const path = require('path');
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const common = parent.common;
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const amtMeshRedirModule = require('./amt-redir-mesh.js');
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const amtMeshIderModule = require('./amt-ider-module.js');
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//console.log('New Server IDER session from ' + user.name);
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var obj = {};
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obj.user = user;
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obj.domain = domain;
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obj.ider = null;
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// Disconnect this user
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obj.close = function (arg) {
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if ((arg == 1) || (arg == null)) { try { ws.close(); parent.parent.debug(1, 'Soft disconnect'); } catch (e) { console.log(e); } } // Soft close, close the websocket
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if (arg == 2) { try { ws._socket._parent.end(); parent.parent.debug(1, 'Hard disconnect'); } catch (e) { console.log(e); } } // Hard close, close the TCP socket
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};
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try {
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// Check if the user is logged in
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if (user == null) { try { ws.close(); } catch (e) { } return; }
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// When data is received from the web socket
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ws.on('message', processWebSocketData);
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// If error, do nothing
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ws.on('error', function (err) { console.log(err); obj.close(0); });
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// If the web socket is closed
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ws.on('close', function (req) {
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// Close the IDER session
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if (obj.ider) { obj.ider.Stop(); delete obj.ider; }
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});
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// We are all set, start receiving data
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ws._socket.resume();
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} catch (e) { console.log(e); }
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// Process incoming web socket data from the browser
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function processWebSocketData(msg) {
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var command, i = 0, mesh = null, meshid = null, nodeid = null, meshlinks = null, change = 0;
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try { command = JSON.parse(msg.toString('utf8')); } catch (e) { return; }
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if (common.validateString(command.action, 3, 32) == false) return; // Action must be a string between 3 and 32 chars
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switch (command.action) {
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case 'ping': { try { ws.send(JSON.stringify({ action: 'pong' })); } catch (ex) { } break; }
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case 'start': {
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// Get the list of disk images
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var domainx = 'domain' + ((domain.id == '') ? '' : ('-' + domain.id));
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var useridx = user._id.split('/')[2];
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var userPath = parent.parent.path.join(parent.parent.filespath, domainx, 'user-' + useridx);
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// Look for a list of disk images for the user to select.
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if (fs.existsSync(userPath)) {
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// Do something
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readFsRec(userPath, function (err, results) {
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var floppyImages = [], cdromImages = [];
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for (var i in results) {
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if (results[i].toLowerCase().endsWith('.img')) { floppyImages.push(results[i].substring(userPath.length + 1)); }
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else if (results[i].toLowerCase().endsWith('.iso')) { cdromImages.push(results[i].substring(userPath.length + 1)); }
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}
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var xx, sel = true, html = "<div style='margin:10px 5px 10px 5px'>Select disk images & start type.</div>";
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// Floppy image selection
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xx = "<select style=width:240px id=xxFloppyImagesSelect><option value=''>None</option>";
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for (var i in floppyImages) { xx += "<option value='" + encodeURIComponent(floppyImages[i]) + "'" + (sel?" selected":"") + ">" + floppyImages[i] + "</option>"; sel = false; }
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xx += "</select>";
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html += "<div style=margin:5px>" + addHtmlValue("Floppy Image", xx) + "</div>";
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// CDROM image selection
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sel = true;
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xx = "<select style=width:240px id=xxCdromImagesSelect><option value=''>None</option>";
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for (var i in cdromImages) { xx += "<option value='" + encodeURIComponent(cdromImages[i]) + "'" + (sel ? " selected" : "") + ">" + cdromImages[i] + "</option>"; sel = false; }
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xx += "</select>";
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html += "<div style=margin:5px>" + addHtmlValue("CDROM Image", xx) + "</div>";
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// Start type
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xx = "<select style=width:240px id=xxIderStartType><option value=0>On next boot<option value=1>Graceful<option value=2>Immediate</select>";
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html += "<div style=margin:5px>" + addHtmlValue("Session Start", xx) + "</div>";
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var js = "function iderServerCall() { return { ider: 1, floppyPath: Q('xxFloppyImagesSelect').value, cdromPath: Q('xxCdromImagesSelect').value, iderStart: Q('xxIderStartType').value }; }";
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try { ws.send(JSON.stringify({ action: 'dialog', args: { html: html, js: js }, buttons: 3 })); } catch (ex) { }
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});
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} else {
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// No user folder
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try { ws.send(JSON.stringify({ action: 'dialog', args: { html: 'No disk images found on remote server. Upload .img and .iso files to server "My Files" folder to enable this feature.' }, buttons: 2 })); } catch (ex) { }
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}
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break;
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}
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case 'dialogResponse': {
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if (command.args.ider == 1) { // Start IDER Session
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// Decode and validate file paths
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if ((command.args.floppyPath != null) && (typeof command.args.floppyPath != 'string')) { command.args.floppyPath = null; } else { command.args.floppyPath = decodeURIComponent(command.args.floppyPath); }
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if ((command.args.cdromPath != null) && (typeof command.args.cdromPath != 'string')) { command.args.cdromPath = null; } else { command.args.cdromPath = decodeURIComponent(command.args.cdromPath); }
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// TODO: Double check that "." or ".." are not used.
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if ((command.args.floppyPath != null) && (command.args.floppyPath.indexOf('..') >= 0)) { delete command.args.floppyPath; }
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if ((command.args.cdromPath != null) && (command.args.cdromPath.indexOf('..') >= 0)) { delete command.args.cdromPath; }
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// Get the disk image paths
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var domainx = 'domain' + ((domain.id == '') ? '' : ('-' + domain.id));
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var useridx = user._id.split('/')[2];
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var floppyPath = null, cdromPath = null;
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if (command.args.floppyPath) { floppyPath = parent.parent.path.join(parent.parent.filespath, domainx, 'user-' + useridx, command.args.floppyPath); }
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if (command.args.cdromPath) { cdromPath = parent.parent.path.join(parent.parent.filespath, domainx, 'user-' + useridx, command.args.cdromPath); }
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// Setup the IDER session
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obj.ider = amtMeshRedirModule.CreateAmtRedirect(amtMeshIderModule.CreateAmtRemoteIder(parent, parent.parent), domain, user, parent, parent.parent);
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obj.ider.onStateChanged = onIderStateChange;
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obj.ider.m.iderStart = command.args.iderStart;
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obj.ider.m.sectorStats = iderSectorStats;
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obj.ider.tlsv1only = req.query.tlsv1only;
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// Setup disk images
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var iderError = obj.ider.m.diskSetup(floppyPath, cdromPath);
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// Error with the disk images, unable to start IDER
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if (iderError != 0) { try { ws.send(JSON.stringify({ action: 'error', code: iderError })); } catch (ex) { } break; }
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// Start the IDER session
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obj.ider.Start(req.query.host, req.query.port, req.query.tls);
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}
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break;
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}
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default: {
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// Unknown user action
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console.log('Unknown IDER action from user ' + user.name + ': ' + command.action + '.');
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break;
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}
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}
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}
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function onIderStateChange(sender, state) {
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try { ws.send(JSON.stringify({ action: 'state', state: state })); } catch (ex) { }
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switch (state) {
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case 0:
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// Close the websocket connection and clean up.
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obj.ider.onStateChanged = null;
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obj.ider.m.sectorStats = null;
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obj.ider = null;
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obj.close();
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break;
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}
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}
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function iderSectorStats(mode, dev, total, start, len) {
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try { ws.send(JSON.stringify({ action: 'stats', mode: mode, dev: dev, total: total, start: start, len: len, toAmt: obj.ider.m.bytesToAmt, fromAmt: obj.ider.m.bytesFromAmt })); } catch (ex) { }
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}
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// Recursivly read all of the files in a fonder
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function readFsRec(dir, func) {
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var results = [];
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fs.readdir(dir, function (err, list) {
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if (err) return func(err);
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var pending = list.length;
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if (!pending) return func(null, results);
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list.forEach(function (file) {
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file = path.resolve(dir, file);
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fs.stat(file, function (err, stat) {
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if (stat && stat.isDirectory()) {
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readFsRec(file, function (err, res) { results = results.concat(res); if (!--pending) func(null, results); });
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} else {
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results.push(file); if (!--pending) func(null, results);
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}
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});
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});
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});
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};
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function addHtmlValue(t, v) { return '<div style=height:20px><div style=float:right;width:240px;overflow:hidden><b title="' + v + '">' + v + '</b></div><div>' + t + '</div></div>'; }
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return obj;
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}; |