/**
* @description Meshcentral MeshMail
* @author Ylian Saint-Hilaire
* @version v0.0.1
*/
// Construct a MeshAgent object, called upon connection
module.exports.CreateMeshMain = function (parent) {
var obj = {};
obj.pendingMails = [];
obj.parent = parent;
obj.retry = 0;
obj.sendingMail = false;
obj.mailCookieEncryptionKey = null;
const nodemailer = require('nodemailer');
// Default account email validation mail
var accountCheckSubject = '[[[SERVERNAME]]] - Email Verification';
var accountCheckMailHtml = '';
var accountCheckMailText = '[[[SERVERNAME]]] - Verification\r\n\r\nHi [[[USERNAME]]], [[[SERVERNAME]]] ([[[SERVERURL]]]) is performing an e-mail verification. Nagivate to the following link to complete the process: [[[CALLBACKURL]]]\r\nIf you did not initiate this request, please ignore this mail.\r\n';
// Default account reset mail
var accountResetSubject = '[[[SERVERNAME]]] - Account Reset';
var accountResetMailHtml = '';
var accountResetMailText = '[[[SERVERNAME]]] - Account Reset\r\n\r\nHi [[[USERNAME]]], [[[SERVERNAME]]] ([[[SERVERURL]]]) is requesting an account password reset. Nagivate to the following link to complete the process: [[[CALLBACKURL]]]\r\nIf you did not initiate this request, please ignore this mail.\r\n';
// 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);
// Perform all e-mail substitution
function mailReplacements(text, domain, username, email, cookie) {
var url = 'http' + ((obj.parent.args.notls == null) ? 's' : '') + '://' + parent.certificates.CommonName + ':' + obj.parent.args.port + domain.url;
if (cookie != null) { text = text.split('[[[CALLBACKURL]]]').join(url + 'checkmail?c=' + cookie) }
return text.split('[[[USERNAME]]]').join(username).split('[[[SERVERURL]]]').join(url).split('[[[SERVERNAME]]]').join(domain.title);
}
// 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) {
if ((parent.certificates == null) || (parent.certificates.CommonName == null)) return; // If the server name is not set, no reset possible.
var cookie = obj.parent.encodeCookie({ u: domain.id + '/' + username, e: email, a: 1 }, obj.mailCookieEncryptionKey);
obj.pendingMails.push({ to: email, from: parent.config.smtp.from, subject: mailReplacements(accountCheckSubject, domain, username, email), text: mailReplacements(accountCheckMailText, domain, username, email, cookie), html: mailReplacements(accountCheckMailHtml, domain, username, email, cookie) });
sendNextMail();
}
// Send account reset mail
obj.sendAccountResetMail = function (domain, username, email) {
if ((parent.certificates == null) || (parent.certificates.CommonName == null)) return; // If the server name is not set, don't validate the email address.
var cookie = obj.parent.encodeCookie({ u: domain.id + '/' + username, e: email, a: 2 }, obj.mailCookieEncryptionKey);
obj.pendingMails.push({ to: email, from: parent.config.smtp.from, subject: mailReplacements(accountResetSubject, domain, username, email), text: mailReplacements(accountResetMailText, domain, username, email, cookie), html: mailReplacements(accountResetMailHtml, domain, username, email, cookie) });
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)) {
// 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;
}