545 lines
28 KiB
JavaScript
545 lines
28 KiB
JavaScript
/**
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* @description MeshCentral plugin module
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* @author Ryan Blenis
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* @copyright
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* @license Apache-2.0
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* @version v0.0.1
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*/
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/*xjslint node: true */
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/*xjslint plusplus: true */
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/*xjslint maxlen: 256 */
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/*jshint node: true */
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/*jshint strict: false */
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/*jshint esversion: 6 */
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"use strict";
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/*
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Existing plugins:
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https://raw.githubusercontent.com/ryanblenis/MeshCentral-Sample/master/config.json
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https://raw.githubusercontent.com/ryanblenis/MeshCentral-DevTools/master/config.json
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*/
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module.exports.pluginHandler = function (parent) {
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var obj = {};
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obj.fs = require('fs');
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obj.path = require('path');
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obj.common = require('./common.js');
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obj.parent = parent;
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obj.pluginPath = obj.parent.path.join(obj.parent.datapath, 'plugins');
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obj.plugins = {};
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obj.exports = {};
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obj.loadList = obj.parent.config.settings.plugins.list; // For local development / manual install, not from DB
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if (typeof obj.loadList != 'object') {
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obj.loadList = {};
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parent.db.getPlugins(function (err, plugins) {
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plugins.forEach(function (plugin) {
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if (plugin.status != 1) return;
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if (obj.fs.existsSync(obj.pluginPath + '/' + plugin.shortName)) {
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try {
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obj.plugins[plugin.shortName] = require(obj.pluginPath + '/' + plugin.shortName + '/' + plugin.shortName + '.js')[plugin.shortName](obj);
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obj.exports[plugin.shortName] = obj.plugins[plugin.shortName].exports;
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} catch (e) {
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console.log("Error loading plugin: " + plugin.shortName + " (" + e + "). It has been disabled.", e.stack);
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}
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try { // try loading local info about plugin to database (if it changed locally)
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var plugin_config = obj.fs.readFileSync(obj.pluginPath + '/' + plugin.shortName + '/config.json');
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plugin_config = JSON.parse(plugin_config);
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parent.db.updatePlugin(plugin._id, plugin_config);
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} catch (e) { console.log("Plugin config file for " + plugin.name + " could not be parsed."); }
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}
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});
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obj.parent.updateMeshCore(); // db calls are async, lets inject here once we're ready
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});
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} else {
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obj.loadList.forEach(function (plugin, index) {
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if (obj.fs.existsSync(obj.pluginPath + '/' + plugin)) {
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try {
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obj.plugins[plugin] = require(obj.pluginPath + '/' + plugin + '/' + plugin + '.js')[plugin](obj);
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obj.exports[plugin] = obj.plugins[plugin].exports;
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} catch (e) {
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console.log("Error loading plugin: " + plugin + " (" + e + "). It has been disabled.", e.stack);
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}
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}
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});
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}
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obj.prepExports = function () {
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var str = 'function() {\r\n';
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str += ' var obj = {};\r\n';
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for (var p of Object.keys(obj.plugins)) {
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str += ' obj.' + p + ' = {};\r\n';
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if (Array.isArray(obj.exports[p])) {
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for (var l of Object.values(obj.exports[p])) {
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str += ' obj.' + p + '.' + l + ' = ' + obj.plugins[p][l].toString() + '\r\n';
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}
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}
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}
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str += `
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obj.callHook = function(hookName, ...args) {
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for (const p of Object.keys(obj)) {
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if (typeof obj[p][hookName] == 'function') {
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obj[p][hookName].apply(this, args);
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}
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}
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};
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// accepts a function returning an object or an object with { tabId: "yourTabIdValue", tabTitle: "Your Tab Title" }
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obj.registerPluginTab = function(pluginRegInfo) {
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var d = null;
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if (typeof pluginRegInfo == 'function') d = pluginRegInfo();
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else d = pluginRegInfo;
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if (d.tabId == null || d.tabTitle == null) { return false; }
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if (!Q(d.tabId)) {
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var defaultOn = 'class="on"';
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if (Q('p19headers').querySelectorAll("span.on").length) defaultOn = '';
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QA('p19headers', '<span ' + defaultOn + ' id="p19ph-' + d.tabId + '" onclick="return pluginHandler.callPluginPage(\\''+d.tabId+'\\', this);">'+d.tabTitle+'</span>');
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QA('p19pages', '<div id="' + d.tabId + '"></div>');
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}
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QV('MainDevPlugins', true);
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};
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obj.callPluginPage = function(id, el) {
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var pages = Q('p19pages').querySelectorAll("#p19pages>div");
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for (const i of pages) { i.style.display = 'none'; }
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QV(id, true);
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var tabs = Q('p19headers').querySelectorAll("span");
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for (const i of tabs) { i.classList.remove('on'); }
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el.classList.add('on');
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putstore('_curPluginPage', id);
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};
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obj.addPluginEx = function() {
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meshserver.send({ action: 'addplugin', url: Q('pluginurlinput').value});
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};
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obj.addPluginDlg = function() {
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setDialogMode(2, "Plugin Download URL", 3, obj.addPluginEx, '<p><b>WARNING:</b> Downloading plugins may compromise server security. Only download from trusted sources.</p><input type=text id=pluginurlinput style=width:100% placeholder="https://" />');
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focusTextBox('pluginurlinput');
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};
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obj.refreshPluginHandler = function() {
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let st = document.createElement('script');
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st.src = '/pluginHandler.js';
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document.body.appendChild(st);
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};
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return obj; }`;
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return str;
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}
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obj.refreshJS = function (req, res) {
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// to minimize server reboots when installing new plugins, we call the new data and overwrite the old pluginHandler on the front end
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res.set('Content-Type', 'text/javascript');
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res.send('pluginHandlerBuilder = ' + obj.prepExports() + '\r\n' + ' pluginHandler = new pluginHandlerBuilder(); pluginHandler.callHook("onWebUIStartupEnd");');
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}
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obj.callHook = function (hookName, ...args) {
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for (var p in obj.plugins) {
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if (typeof obj.plugins[p][hookName] == 'function') {
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try {
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obj.plugins[p][hookName](...args);
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} catch (e) {
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console.log("Error ocurred while running plugin hook" + p + ':' + hookName + ' (' + e + ')');
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}
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}
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}
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};
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obj.addMeshCoreModules = function (modulesAdd) {
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for (var plugin in obj.plugins) {
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var moduleDirPath = null;
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var modulesDir = null;
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//if (obj.args.minifycore !== false) { try { moduleDirPath = obj.path.join(obj.pluginPath, 'modules_meshcore_min'); modulesDir = obj.fs.readdirSync(moduleDirPath); } catch (e) { } } // Favor minified modules if present.
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if (modulesDir == null) { try { moduleDirPath = obj.path.join(obj.pluginPath, plugin + '/modules_meshcore'); modulesDir = obj.fs.readdirSync(moduleDirPath); } catch (e) { } } // Use non-minified mofules.
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if (modulesDir != null) {
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for (var i in modulesDir) {
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if (modulesDir[i].toLowerCase().endsWith('.js')) {
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var moduleName = modulesDir[i].substring(0, modulesDir[i].length - 3);
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if (moduleName.endsWith('.min')) { moduleName = moduleName.substring(0, moduleName.length - 4); } // Remove the ".min" for ".min.js" files.
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var moduleData = ['try { addModule("', moduleName, '", "', obj.parent.escapeCodeString(obj.fs.readFileSync(obj.path.join(moduleDirPath, modulesDir[i])).toString('binary')), '"); addedModules.push("', moduleName, '"); } catch (e) { }\r\n'];
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// Merge this module
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// NOTE: "smbios" module makes some non-AI Linux segfault, only include for IA platforms.
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if (moduleName.startsWith('amt-') || (moduleName == 'smbios')) {
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// Add to IA / Intel AMT cores only
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modulesAdd['windows-amt'].push(...moduleData);
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modulesAdd['linux-amt'].push(...moduleData);
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} else if (moduleName.startsWith('win-')) {
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// Add to Windows cores only
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modulesAdd['windows-amt'].push(...moduleData);
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} else if (moduleName.startsWith('linux-')) {
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// Add to Linux cores only
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modulesAdd['linux-amt'].push(...moduleData);
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modulesAdd['linux-noamt'].push(...moduleData);
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} else {
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// Add to all cores
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modulesAdd['windows-amt'].push(...moduleData);
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modulesAdd['linux-amt'].push(...moduleData);
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modulesAdd['linux-noamt'].push(...moduleData);
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}
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// Merge this module to recovery modules if needed
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if (modulesAdd['windows-recovery'] != null) {
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if ((moduleName == 'win-console') || (moduleName == 'win-message-pump') || (moduleName == 'win-terminal')) {
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modulesAdd['windows-recovery'].push(...moduleData);
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}
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}
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// Merge this module to agent recovery modules if needed
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if (modulesAdd['windows-agentrecovery'] != null) {
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if ((moduleName == 'win-console') || (moduleName == 'win-message-pump') || (moduleName == 'win-terminal')) {
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modulesAdd['windows-agentrecovery'].push(...moduleData);
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}
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}
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}
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}
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}
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}
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};
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obj.deviceViewPanel = function () {
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var panel = {};
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for (var p in obj.plugins) {
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if (typeof obj.plugins[p][hookName] == 'function') {
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try {
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panel[p].header = obj.plugins[p].on_device_header();
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panel[p].content = obj.plugins[p].on_device_page();
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} catch (e) {
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console.log("Error ocurred while getting plugin views " + p + ':' + ' (' + e + ')');
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}
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}
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}
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return panel;
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};
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obj.isValidConfig = function (conf, url) { // check for the required attributes
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var isValid = true;
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if (!(
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typeof conf.name == 'string'
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&& typeof conf.shortName == 'string'
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&& typeof conf.version == 'string'
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// && typeof conf.author == 'string'
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&& typeof conf.description == 'string'
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&& typeof conf.hasAdminPanel == 'boolean'
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&& typeof conf.homepage == 'string'
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&& typeof conf.changelogUrl == 'string'
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&& typeof conf.configUrl == 'string'
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&& typeof conf.repository == 'object'
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&& typeof conf.repository.type == 'string'
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&& typeof conf.repository.url == 'string'
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&& typeof conf.meshCentralCompat == 'string'
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// && conf.configUrl == url // make sure we're loading a plugin from its desired config
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)) isValid = false;
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// more checks here?
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if (conf.repository.type == 'git') {
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if (typeof conf.downloadUrl != 'string') isValid = false;
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}
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return isValid;
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};
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// https://raw.githubusercontent.com/ryanblenis/MeshCentral-Sample/master/config.json
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obj.getPluginConfig = function (configUrl) {
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return new Promise(function (resolve, reject) {
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var http = (configUrl.indexOf('https://') >= 0) ? require('https') : require('http');
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if (configUrl.indexOf('://') === -1) reject("Unable to fetch the config: Bad URL (" + configUrl + ")");
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var options = require('url').parse(configUrl);
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if (typeof parent.config.settings.plugins.proxy == 'string') { // Proxy support
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const HttpsProxyAgent = require('https-proxy-agent');
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options.agent = new HttpsProxyAgent(require('url').parse(parent.config.settings.plugins.proxy));
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}
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http.get(options, function (res) {
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var configStr = '';
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res.on('data', function (chunk) {
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configStr += chunk;
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});
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res.on('end', function () {
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if (configStr[0] == '{') { // Let's be sure we're JSON
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try {
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var pluginConfig = JSON.parse(configStr);
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if (Array.isArray(pluginConfig) && pluginConfig.length == 1) pluginConfig = pluginConfig[0];
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if (obj.isValidConfig(pluginConfig, configUrl)) {
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resolve(pluginConfig);
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} else {
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reject("This does not appear to be a valid plugin configuration.");
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}
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} catch (e) { reject("Error getting plugin config. Check that you have valid JSON."); }
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} else {
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reject("Error getting plugin config. Check that you have valid JSON.");
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}
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});
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}).on('error', function (e) {
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reject("Error getting plugin config: " + e.message);
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});
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})
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};
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// MeshCentral now adheres to semver, drop the -<alpha> off the version number for later versions for comparing plugins prior to this change
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obj.versionToNumber = function(ver) { var x = ver.split('-'); if (x.length != 2) return ver; return x[0]; }
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// Check if the current version of MeshCentral is at least the minimal required.
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obj.versionCompare = function(current, minimal) {
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if (minimal.startsWith('>=')) { minimal = minimal.substring(2); }
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var c = obj.versionToNumber(current).split('.'), m = obj.versionToNumber(minimal).split('.');
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if (c.length != m.length) return false;
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for (var i = 0; i < c.length; i++) { var cx = parseInt(c[i]), cm = parseInt(m[i]); if (cx > cm) { return true; } if (cx < cm) { return false; } }
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return true;
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}
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obj.getPluginLatest = function () {
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return new Promise(function (resolve, reject) {
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parent.db.getPlugins(function (err, plugins) {
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var proms = [];
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plugins.forEach(function (curconf) {
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proms.push(obj.getPluginConfig(curconf.configUrl).catch(e => { return null; }));
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});
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var latestRet = [];
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Promise.all(proms).then(function (newconfs) {
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var nconfs = [];
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// Filter out config download issues
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newconfs.forEach(function (nc) { if (nc !== null) nconfs.push(nc); });
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if (nconfs.length == 0) { resolve([]); } else {
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nconfs.forEach(function (newconf) {
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var curconf = null;
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plugins.forEach(function (conf) {
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if (conf.configUrl == newconf.configUrl) curconf = conf;
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});
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if (curconf == null) reject("Some plugin configs could not be parsed");
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var s = require('semver');
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latestRet.push({
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'id': curconf._id,
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'installedVersion': curconf.version,
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'version': newconf.version,
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'hasUpdate': s.gt(newconf.version, curconf.version),
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'meshCentralCompat': obj.versionCompare(parent.currentVer, newconf.meshCentralCompat),
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'changelogUrl': curconf.changelogUrl,
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'status': curconf.status
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});
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resolve(latestRet);
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});
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}
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}).catch((e) => { console.log("Error reaching plugins, update call aborted.", e) });
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});
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});
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};
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obj.addPlugin = function (pluginConfig) {
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return new Promise(function (resolve, reject) {
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parent.db.addPlugin({
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'name': pluginConfig.name,
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'shortName': pluginConfig.shortName,
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'version': pluginConfig.version,
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'description': pluginConfig.description,
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'hasAdminPanel': pluginConfig.hasAdminPanel,
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'homepage': pluginConfig.homepage,
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'changelogUrl': pluginConfig.changelogUrl,
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'configUrl': pluginConfig.configUrl,
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'downloadUrl': pluginConfig.downloadUrl,
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'repository': {
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'type': pluginConfig.repository.type,
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'url': pluginConfig.repository.url
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},
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'meshCentralCompat': pluginConfig.meshCentralCompat,
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'versionHistoryUrl': pluginConfig.versionHistoryUrl,
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'status': 0 // 0: disabled, 1: enabled
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}, function () {
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parent.db.getPlugins(function (err, docs) {
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if (err) reject(err);
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else resolve(docs);
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});
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});
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});
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};
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obj.installPlugin = function (id, version_only, force_url, func) {
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parent.db.getPlugin(id, function (err, docs) {
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// the "id" would probably suffice, but is probably an sanitary issue, generate a random instead
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var randId = Math.random().toString(32).replace('0.', '');
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var fileName = obj.parent.path.join(require('os').tmpdir(), 'Plugin_' + randId + '.zip');
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var plugin = docs[0];
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if (plugin.repository.type == 'git') {
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const file = obj.fs.createWriteStream(fileName);
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var dl_url = plugin.downloadUrl;
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if (version_only != null && version_only != false) dl_url = version_only.url;
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if (force_url != null) dl_url = force_url;
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var url = require('url');
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var q = url.parse(dl_url, true);
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var http = (q.protocol == "http") ? require('http') : require('https');
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var opts = {
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path: q.pathname,
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host: q.hostname,
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port: q.port,
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headers: {
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'User-Agent': 'MeshCentral'
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},
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followRedirects: true,
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method: 'GET'
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};
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if (typeof parent.config.settings.plugins.proxy == 'string') { // Proxy support
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const HttpsProxyAgent = require('https-proxy-agent');
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opts.agent = new HttpsProxyAgent(require('url').parse(parent.config.settings.plugins.proxy));
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}
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var request = http.get(opts, function (response) {
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// handle redirections with grace
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if (response.headers.location) return obj.installPlugin(id, version_only, response.headers.location, func);
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response.pipe(file);
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file.on('finish', function () {
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file.close(function () {
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var yauzl = require('yauzl');
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if (!obj.fs.existsSync(obj.pluginPath)) {
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obj.fs.mkdirSync(obj.pluginPath);
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}
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if (!obj.fs.existsSync(obj.parent.path.join(obj.pluginPath, plugin.shortName))) {
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obj.fs.mkdirSync(obj.parent.path.join(obj.pluginPath, plugin.shortName));
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}
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yauzl.open(fileName, { lazyEntries: true }, function (err, zipfile) {
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if (err) throw err;
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zipfile.readEntry();
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zipfile.on('entry', function (entry) {
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let pluginPath = obj.parent.path.join(obj.pluginPath, plugin.shortName);
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let pathReg = new RegExp(/(.*?\/)/);
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//if (process.platform == 'win32') { pathReg = new RegExp(/(.*?\\/); }
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let filePath = obj.parent.path.join(pluginPath, entry.fileName.replace(pathReg, '')); // remove top level dir
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if (/\/$/.test(entry.fileName)) { // dir
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if (!obj.fs.existsSync(filePath))
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obj.fs.mkdirSync(filePath);
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zipfile.readEntry();
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} else { // file
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zipfile.openReadStream(entry, function (err, readStream) {
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if (err) throw err;
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readStream.on('end', function () { zipfile.readEntry(); });
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if (process.platform == 'win32') {
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readStream.pipe(obj.fs.createWriteStream(filePath));
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} else {
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var fileMode = (entry.externalFileAttributes >> 16) & 0x0fff;
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if( fileMode <= 0 ) fileMode = 0o644;
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readStream.pipe(obj.fs.createWriteStream(filePath, { mode: fileMode }));
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}
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});
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}
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});
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zipfile.on('end', function () {
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setTimeout(function () {
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obj.fs.unlinkSync(fileName);
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if (version_only == null || version_only === false) {
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parent.db.setPluginStatus(id, 1, func);
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} else {
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parent.db.updatePlugin(id, { status: 1, version: version_only.name }, func);
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}
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try {
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obj.plugins[plugin.shortName] = require(obj.pluginPath + '/' + plugin.shortName + '/' + plugin.shortName + '.js')[plugin.shortName](obj);
|
|
obj.exports[plugin.shortName] = obj.plugins[plugin.shortName].exports;
|
|
if (typeof obj.plugins[plugin.shortName].server_startup == 'function') obj.plugins[plugin.shortName].server_startup();
|
|
} catch (e) { console.log('Error instantiating new plugin: ', e); }
|
|
try {
|
|
var plugin_config = obj.fs.readFileSync(obj.pluginPath + '/' + plugin.shortName + '/config.json');
|
|
plugin_config = JSON.parse(plugin_config);
|
|
parent.db.updatePlugin(plugin._id, plugin_config);
|
|
} catch (e) { console.log('Error reading plugin config upon install'); }
|
|
parent.updateMeshCore();
|
|
});
|
|
});
|
|
});
|
|
});
|
|
});
|
|
});
|
|
} else if (plugin.repository.type == 'npm') {
|
|
// @TODO npm support? (need a test plugin)
|
|
}
|
|
});
|
|
};
|
|
|
|
obj.getPluginVersions = function (id) {
|
|
return new Promise(function (resolve, reject) {
|
|
parent.db.getPlugin(id, function (err, docs) {
|
|
var plugin = docs[0];
|
|
if (plugin.versionHistoryUrl == null) reject("No version history available for this plugin.");
|
|
var url = require('url');
|
|
var q = url.parse(plugin.versionHistoryUrl, true);
|
|
var http = (q.protocol == 'http') ? require('http') : require('https');
|
|
var opts = {
|
|
path: q.pathname,
|
|
host: q.hostname,
|
|
port: q.port,
|
|
headers: {
|
|
'User-Agent': 'MeshCentral',
|
|
'Accept': 'application/vnd.github.v3+json'
|
|
}
|
|
};
|
|
if (typeof parent.config.settings.plugins.proxy == 'string') { // Proxy support
|
|
const HttpsProxyAgent = require('https-proxy-agent');
|
|
options.agent = new HttpsProxyAgent(require('url').parse(parent.config.settings.plugins.proxy));
|
|
}
|
|
http.get(opts, function (res) {
|
|
var versStr = '';
|
|
res.on('data', function (chunk) {
|
|
versStr += chunk;
|
|
});
|
|
res.on('end', function () {
|
|
if ((versStr[0] == '{') || (versStr[0] == '[')) { // let's be sure we're JSON
|
|
try {
|
|
var vers = JSON.parse(versStr);
|
|
var vList = [];
|
|
var s = require('semver');
|
|
vers.forEach((v) => {
|
|
if (s.lt(v.name, plugin.version)) vList.push(v);
|
|
});
|
|
if (vers.length == 0) reject("No previous versions available.");
|
|
resolve({ 'id': plugin._id, 'name': plugin.name, versionList: vList });
|
|
} catch (e) { reject("Version history problem."); }
|
|
} else {
|
|
reject("Version history appears to be malformed." + versStr);
|
|
}
|
|
});
|
|
}).on('error', function (e) {
|
|
reject("Error getting plugin versions: " + e.message);
|
|
});
|
|
});
|
|
});
|
|
};
|
|
|
|
obj.disablePlugin = function (id, func) {
|
|
parent.db.getPlugin(id, function (err, docs) {
|
|
var plugin = docs[0];
|
|
parent.db.setPluginStatus(id, 0, func);
|
|
delete obj.plugins[plugin.shortName];
|
|
delete obj.exports[plugin.shortName];
|
|
parent.updateMeshCore();
|
|
});
|
|
};
|
|
|
|
obj.removePlugin = function (id, func) {
|
|
parent.db.getPlugin(id, function (err, docs) {
|
|
var plugin = docs[0];
|
|
let pluginPath = obj.parent.path.join(obj.pluginPath, plugin.shortName);
|
|
obj.fs.rmdirSync(pluginPath, { recursive: true });
|
|
parent.db.deletePlugin(id, func);
|
|
delete obj.plugins[plugin.shortName];
|
|
});
|
|
};
|
|
|
|
obj.handleAdminReq = function (req, res, user, serv) {
|
|
if ((req.query.pin == null) || (obj.common.isAlphaNumeric(req.query.pin) !== true)) { res.sendStatus(401); return; }
|
|
var path = obj.path.join(obj.pluginPath, req.query.pin, 'views');
|
|
serv.app.set('views', path);
|
|
if ((obj.plugins[req.query.pin] != null) && (typeof obj.plugins[req.query.pin].handleAdminReq == 'function')) {
|
|
obj.plugins[req.query.pin].handleAdminReq(req, res, user);
|
|
} else {
|
|
res.sendStatus(401);
|
|
}
|
|
}
|
|
|
|
obj.handleAdminPostReq = function (req, res, user, serv) {
|
|
if ((req.query.pin == null) || (obj.common.isAlphaNumeric(req.query.pin) !== true)) { res.sendStatus(401); return; }
|
|
var path = obj.path.join(obj.pluginPath, req.query.pin, 'views');
|
|
serv.app.set('views', path);
|
|
if ((obj.plugins[req.query.pin] != null) && (typeof obj.plugins[req.query.pin].handleAdminPostReq == 'function')) {
|
|
obj.plugins[req.query.pin].handleAdminPostReq(req, res, user);
|
|
} else {
|
|
res.sendStatus(401);
|
|
}
|
|
}
|
|
return obj;
|
|
};
|