/** * @description MeshCentral e-mail server communication modules * @author Ylian Saint-Hilaire * @copyright Intel Corporation 2018-2019 * @license Apache-2.0 * @version v0.0.1 */ /*xjslint node: true */ /*xjslint plusplus: true */ /*xjslint maxlen: 256 */ /*jshint node: true */ /*jshint strict: false */ /*jshint esversion: 6 */ "use strict"; // Construct a MeshAgent object, called upon connection module.exports.CreateMeshMail = function (parent) { var obj = {}; obj.pendingMails = []; obj.parent = parent; obj.retry = 0; obj.sendingMail = false; obj.mailCookieEncryptionKey = null; obj.mailTemplates = {}; const nodemailer = require('nodemailer'); function EscapeHtml(x) { if (typeof x == "string") return x.replace(/&/g, '&').replace(/>/g, '>').replace(/</g, '<').replace(/"/g, '"').replace(/'/g, '''); if (typeof x == "boolean") return x; if (typeof x == "number") return x; } //function EscapeHtmlBreaks(x) { if (typeof x == "string") return x.replace(/&/g, '&').replace(/>/g, '>').replace(/</g, '<').replace(/"/g, '"').replace(/'/g, ''').replace(/\r/g, '<br />').replace(/\n/g, '').replace(/\t/g, ' '); if (typeof x == "boolean") return x; if (typeof x == "number") return x; } // Setup mail server var options = { host: parent.config.smtp.host, secure: (parent.config.smtp.tls == true), tls: { rejectUnauthorized: false } }; if (parent.config.smtp.port != null) { options.port = parent.config.smtp.port; } if ((parent.config.smtp.user != null) && (parent.config.smtp.pass != null)) { options.auth = { user: parent.config.smtp.user, pass: parent.config.smtp.pass }; } obj.smtpServer = nodemailer.createTransport(options); // Set default mail templates // You can override these by placing a file with the same name in "meshcentral-data/mail" // If the server hash many domains, just add the domainid to the file like this: 'account-check-customer1.html', 'mesh-invite-customer1.txt'. obj.mailTemplates['account-check.html'] = '<title>[[[SERVERNAME]]] - Email Verification</title>\r\n<div style="font-family:Arial,Helvetica,sans-serif"><table style="background-color:#003366;color:lightgray;width:100%" cellpadding=8><tr><td><b style="font-size:20px;font-family:Arial,Helvetica,sans-serif">[[[SERVERNAME]]] - Verification</b></td></tr></table><p>Hi [[[USERNAME]]], <a href="[[[SERVERURL]]]">[[[SERVERNAME]]]</a> is requesting email verification, click on the following link to complete the process.</p><p style="margin-left:30px"><a href="[[[SERVERURL]]]/checkmail?c=[[[COOKIE]]]">Click here to verify your e-mail address.</a></p>If you did not initiate this request, please ignore this mail.</div>'; obj.mailTemplates['account-reset.html'] = '<title>[[[SERVERNAME]]] - Account Reset</title>\r\n<div style="font-family:Arial,Helvetica,sans-serif"><table style="background-color:#003366;color:lightgray;width:100%" cellpadding=8><tr><td><b style="font-size:20px;font-family:Arial,Helvetica,sans-serif">[[[SERVERNAME]]] - Verification</b></td></tr></table><p>Hi [[[USERNAME]]], <a href="[[[SERVERURL]]]">[[[SERVERNAME]]]</a> is requesting an account password reset, click on the following link to complete the process.</p><p style="margin-left:30px"><a href="[[[SERVERURL]]]/checkmail?c=[[[COOKIE]]]">Click here to reset your account password.</a></p>If you did not initiate this request, please ignore this mail.</div>'; obj.mailTemplates['mesh-invite.html'] = '<title>[[[SERVERNAME]]] - Invitation</title>\r\n<div style="font-family:Arial,Helvetica,sans-serif"><table style="background-color:#003366;color:lightgray;width:100%" cellpadding=8><tr><td><b style="font-size:20px;font-family:Arial,Helvetica,sans-serif">[[[SERVERNAME]]] - Agent Installation</b></td></tr></table>[[[AREA-NAME]]]<p>Hello [[[NAME]]],</p>[[[/AREA-NAME]]]<p>User [[[USERNAME]]] on server <a href="[[[SERVERURL]]]">[[[SERVERNAME]]]</a> is requesting you to download the following software to start the remote control session.</p>[[[AREA-MSG]]]<p>Message: <b>[[[MSG]]]</b></p>[[[/AREA-MSG]]][[[AREA-WINDOWS]]]<p style="margin-left:30px"><a href="[[[SERVERURL]]]/meshagents?id=3&meshid=[[[MESHIDHEX]]]&tag=mailto:[[[EMAIL]]]&installflags=[[[INSTALLFLAGS]]]">Click here to download the MeshAgent for Windows.</a></p>[[[/AREA-WINDOWS]]][[[AREA-OSX]]]<p style="margin-left:30px"><a href="[[[SERVERURL]]]/meshagents?id=16&meshid=[[[MESHIDHEX]]]&tag=mailto:[[[EMAIL]]]&installflags=[[[INSTALLFLAGS]]]">Click here to download the MeshAgent for Apple OSX.</a></p>[[[/AREA-OSX]]][[[AREA-LINUX]]]<p>For Linux, cut & paste the following in a terminal to install the agent:<br /><pre style="margin-left:30px">wget -q [[[SERVERURL]]]/meshagents?script=1 --no-check-certificate -O ./meshinstall.sh && chmod 755 ./meshinstall.sh && sudo ./meshinstall.sh [[[SERVERURL]]] [[[MESHIDHEX]]]</pre></p>[[[/AREA-LINUX]]]<p>If you did not initiate this request, please ignore this mail.</p>Best regards,<br>[[[USERNAME]]]<br></div>'; obj.mailTemplates['account-check.txt'] = '[[[SERVERNAME]]] - Email Verification\r\nHi [[[USERNAME]]], [[[SERVERNAME]]] ([[[SERVERURL]]]) is performing an e-mail verification. Nagivate to the following link to complete the process:\r\n\r\n[[[SERVERURL]]]/checkmail?c=[[[COOKIE]]]\r\n\r\nIf you did not initiate this request, please ignore this mail.\r\n'; obj.mailTemplates['account-reset.txt'] = '[[[SERVERNAME]]] - Account Reset\r\nHi [[[USERNAME]]], [[[SERVERNAME]]] ([[[SERVERURL]]]) is requesting an account password reset. Nagivate to the following link to complete the process:\r\n\r\n[[[SERVERURL]]]/checkmail?c=[[[COOKIE]]]\r\n\r\nIf you did not initiate this request, please ignore this mail.'; obj.mailTemplates['mesh-invite.txt'] = '[[[SERVERNAME]]] - Invitation\r\n[[[AREA-NAME]]]Hello [[[NAME]]],\r\n\r\n[[[/AREA-NAME]]]User [[[USERNAME]]] on server [[[SERVERNAME]]] ([[[SERVERURL]]]/) is requesting you to download the following software to start the remote control session.[[[AREA-MSG]]]\r\n\r\nMessage: [[[MSG]]]\r\n\r\n[[[/AREA-MSG]]][[[AREA-WINDOWS]]]For Windows, nagivate to the following link to complete the process:\r\n\r\n[[[SERVERURL]]]/meshagents?id=3&meshid=[[[MESHIDHEX]]]&tag=mailto:[[[EMAIL]]]&installflags=[[[INSTALLFLAGS]]]\r\n\r\n[[[/AREA-WINDOWS]]][[[AREA-OSX]]]For Apple OSX, nagivate to the following link to complete the process:\r\n\r\n[[[SERVERURL]]]/meshagents?id=16&meshid=[[[MESHIDHEX]]]&tag=mailto:[[[EMAIL]]]&installflags=[[[INSTALLFLAGS]]]\r\n\r\n[[[/AREA-OSX]]][[[AREA-LINUX]]]For Linux, cut & paste the following in a terminal to install the agent:\r\n\r\nwget -q [[[SERVERURL]]]/meshagents?script=1 --no-check-certificate -O ./meshinstall.sh && chmod 755 ./meshinstall.sh && sudo ./meshinstall.sh [[[SERVERURL]]] [[[MESHIDHEX]]]\r\n\r\n[[[/AREA-LINUX]]]If you did not initiate this request, please ignore this mail.\r\n\r\nBest regards,\r\n[[[USERNAME]]]'; // Load all of the mail templates if present if (obj.parent.fs.existsSync(obj.parent.path.join(obj.parent.datapath, 'mail-templates'))) { var mailDir = null; try { mailDir = obj.parent.fs.readdirSync(obj.parent.path.join(obj.parent.datapath, 'mail-templates')); } catch (e) { } if (mailDir != null) { // Load all mail templates for (var i in mailDir) { var templateName = mailDir[i].toLowerCase(); if (templateName.endsWith('.html') || templateName.endsWith('.txt')) { obj.mailTemplates[templateName] = obj.parent.fs.readFileSync(obj.parent.path.join(obj.parent.datapath, 'mail-templates', mailDir[i])).toString(); } } } } else { // Save the default templates try { obj.parent.fs.mkdirSync(obj.parent.path.join(obj.parent.datapath, 'mail-templates')); for (var i in obj.mailTemplates) { obj.parent.fs.writeFileSync(obj.parent.path.join(obj.parent.datapath, 'mail-templates', i), obj.mailTemplates[i], 'utf8'); } } catch (e) { console.error(e); } } // Get the correct mail template function getTemplate(name, domain, html) { if (domain != null) { var r = obj.mailTemplates[name + '-' + domain.id + (html ? '.html' : '.txt')]; if (r) return r; } return obj.mailTemplates[name + (html ? '.html' : '.txt')]; } // Get the correct mail template object function getTemplateEx(name, domain) { var r = {}, txt = getTemplate(name, domain, 0), html = getTemplate(name, domain, 1); r.txtSubject = txt.split('\r\n')[0]; r.htmlSubject = getStrBetween(html, '<title>', '</title>\r\n'); r.txt = txt.substring(txt.indexOf('\r\n') + 2); r.html = html.substring(html.indexOf('\r\n') + 2); return r; } // Get the string between two markers function getStrBetween(str, start, end) { var si = str.indexOf(start), ei = str.indexOf(end); if ((si == -1) || (ei == -1) || (si > ei)) return null; return str.substring(si + start.length, ei); } // Remove the string between two markers function removeStrBetween(str, start, end) { var si = str.indexOf(start), ei = str.indexOf(end); if ((si == -1) || (ei == -1) || (si > ei)) return str; return str.substring(0, si) + str.substring(ei + end.length); } // Remove the string between two markers function strZone(str, marker, keep) { marker = marker.toUpperCase(); if (keep) { return str.split('[[[AREA-' + marker + ']]]').join('').split('[[[/AREA-' + marker + ']]]').join(''); } return removeStrBetween(str, '[[[AREA-' + marker + ']]]', '[[[/AREA-' + marker + ']]]'); } // Perform all e-mail substitution function mailReplacements(text, domain, options) { var httpsport = (typeof obj.parent.args.aliasport == 'number') ? obj.parent.args.aliasport : obj.parent.args.port; if (domain.dns == null) { // Default domain or subdomain of the default. options.serverurl = 'http' + ((obj.parent.args.notls == null) ? 's' : '') + '://' + obj.parent.certificates.CommonName + ':' + httpsport + domain.url; } else { // Domain with a DNS name. options.serverurl = 'http' + ((obj.parent.args.notls == null) ? 's' : '') + '://' + domain.dns + ':' + httpsport + domain.url; } if (options.serverurl.endsWith('/')) { options.serverurl = options.serverurl.substring(0, options.serverurl.length - 1); } // Remove the ending / if present for (var i in options) { text = strZone(text, i.toUpperCase(), options[i]); // Adjust this text area text = text.split('[[[' + i.toUpperCase() + ']]]').join(options[i]); // Replace this value } return text; } // Send a mail obj.sendMail = function (to, subject, text, html) { obj.pendingMails.push({ to: to, from: parent.config.smtp.from, subject: subject, text: text, html: html }); sendNextMail(); }; // Send account check mail obj.sendAccountCheckMail = function (domain, username, email) { var template = getTemplateEx('account-check', domain); if ((template == null) || (template.htmlSubject == null) || (template.txtSubject == null) || (parent.certificates == null) || (parent.certificates.CommonName == null) || (parent.certificates.CommonName.indexOf('.') == -1)) return; // If the server name is not set, no reset possible. // Set all the options. var options = { username: username, email: email, servername: domain.title }; options.cookie = obj.parent.encodeCookie({ u: domain.id + '/' + username.toLowerCase(), e: email, a: 1 }, obj.mailCookieEncryptionKey); // Send the email obj.pendingMails.push({ to: email, from: parent.config.smtp.from, subject: mailReplacements(template.htmlSubject, domain, options), text: mailReplacements(template.txt, domain, options), html: mailReplacements(template.html, domain, options) }); sendNextMail(); }; // Send account reset mail obj.sendAccountResetMail = function (domain, username, email) { var template = getTemplateEx('account-reset', domain); if ((template == null) || (template.htmlSubject == null) || (template.txtSubject == null) || (parent.certificates == null) || (parent.certificates.CommonName == null) || (parent.certificates.CommonName.indexOf('.') == -1)) return; // If the server name is not set, don't validate the email address. // Set all the options. var options = { username: username, email: email, servername: domain.title }; options.cookie = obj.parent.encodeCookie({ u: domain.id + '/' + username, e: email, a: 2 }, obj.mailCookieEncryptionKey); // Send the email obj.pendingMails.push({ to: email, from: parent.config.smtp.from, subject: mailReplacements(template.htmlSubject, domain, options), text: mailReplacements(template.txt, domain, options), html: mailReplacements(template.html, domain, options) }); sendNextMail(); }; // Send agent invite mail obj.sendAgentInviteMail = function (domain, username, email, meshid, name, os, msg, flags) { var template = getTemplateEx('mesh-invite', domain); if ((template == null) || (template.htmlSubject == null) || (template.txtSubject == null) || (parent.certificates == null) || (parent.certificates.CommonName == null) || (parent.certificates.CommonName.indexOf('.') == -1)) return; // If the server name is not set, don't validate the email address. // Set all the template replacement options and generate the final email text (both in txt and html formats). var options = { username: username, name: name, email: email, installflags: flags, msg: msg, meshid: meshid, meshidhex: meshid.split('/')[2], servername: domain.title }; options.windows = ((os == 0) || (os == 1)) ? 1 : 0; options.linux = ((os == 0) || (os == 2)) ? 1 : 0; options.osx = ((os == 0) || (os == 3)) ? 1 : 0; // Send the email obj.pendingMails.push({ to: email, from: parent.config.smtp.from, subject: mailReplacements(template.htmlSubject, domain, options), text: mailReplacements(template.txt, domain, options), html: mailReplacements(template.html, domain, options) }); sendNextMail(); }; // Send out the next mail in the pending list function sendNextMail() { if ((obj.sendingMail == true) || (obj.pendingMails.length == 0)) { return; } var mailToSend = obj.pendingMails[0]; obj.sendingMail = true; //console.log('SMTP sending mail to ' + mailToSend.to + '.'); obj.smtpServer.sendMail(mailToSend, function (err, info) { //console.log(JSON.stringify(err), JSON.stringify(info)); obj.sendingMail = false; if (err == null) { obj.pendingMails.shift(); obj.retry = 0; sendNextMail(); // Send the next mail } else { obj.retry++; console.log('SMTP server failed: ' + JSON.stringify(err)); if (obj.retry < 6) { setTimeout(sendNextMail, 60000); } // Wait and try again } }); } // Send out the next mail in the pending list obj.verify = function () { obj.smtpServer.verify(function (err, info) { if (err == null) { console.log('SMTP mail server ' + parent.config.smtp.host + ' working as expected.'); } else { console.log('SMTP mail server ' + parent.config.smtp.host + ' failed: ' + JSON.stringify(err)); } }); }; // Load the cookie encryption key from the database obj.parent.db.Get('MailCookieEncryptionKey', function (err, docs) { if ((docs.length > 0) && (docs[0].key != null) && (obj.parent.mailtokengen == null)) { // Key is present, use it. obj.mailCookieEncryptionKey = Buffer.from(docs[0].key, 'hex'); } else { // Key is not present, generate one. obj.mailCookieEncryptionKey = obj.parent.generateCookieKey(); obj.parent.db.Set({ _id: 'MailCookieEncryptionKey', key: obj.mailCookieEncryptionKey.toString('hex'), time: Date.now() }); } }); return obj; };