uptime-kuma/server/notification-providers/smtp.js

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const nodemailer = require("nodemailer");
const NotificationProvider = require("./notification-provider");
const { DOWN } = require("../../src/util");
const { Liquid } = require("liquidjs");
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class SMTP extends NotificationProvider {
name = "smtp";
/**
* @inheritdoc
*/
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async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
const config = {
host: notification.smtpHost,
port: notification.smtpPort,
secure: notification.smtpSecure,
tls: {
rejectUnauthorized: !notification.smtpIgnoreTLSError || false,
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}
};
// Fix #1129
if (notification.smtpDkimDomain) {
config.dkim = {
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domainName: notification.smtpDkimDomain,
keySelector: notification.smtpDkimKeySelector,
privateKey: notification.smtpDkimPrivateKey,
hashAlgo: notification.smtpDkimHashAlgo,
headerFieldNames: notification.smtpDkimheaderFieldNames,
skipFields: notification.smtpDkimskipFields,
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};
}
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// Should fix the issue in https://github.com/louislam/uptime-kuma/issues/26#issuecomment-896373904
if (notification.smtpUsername || notification.smtpPassword) {
config.auth = {
user: notification.smtpUsername,
pass: notification.smtpPassword,
};
}
// default values in case the user does not want to template
let subject = msg;
let body = msg;
if (heartbeatJSON) {
body = `${msg}\nTime (${heartbeatJSON["timezone"]}): ${heartbeatJSON["localDateTime"]}`;
}
// subject and body are templated
if ((monitorJSON && heartbeatJSON) || msg.endsWith("Testing")) {
// cannot end with whitespace as this often raises spam scores
const customSubject = notification.customSubject?.trim() || "";
const customBody = notification.customBody?.trim() || "";
const context = this.generateContext(msg, monitorJSON, heartbeatJSON);
const engine = new Liquid();
if (customSubject !== "") {
const tpl = engine.parse(customSubject);
subject = await engine.render(tpl, context);
}
if (customBody !== "") {
const tpl = engine.parse(customBody);
body = await engine.render(tpl, context);
}
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}
// send mail with defined transport object
let transporter = nodemailer.createTransport(config);
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await transporter.sendMail({
from: notification.smtpFrom,
cc: notification.smtpCC,
bcc: notification.smtpBCC,
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to: notification.smtpTo,
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subject: subject,
text: body,
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});
return "Sent Successfully.";
}
/**
* Generate context for LiquidJS
* @param {string} msg the message that will be included in the context
* @param {?object} monitorJSON Monitor details (For Up/Down/Cert-Expiry only)
* @param {?object} heartbeatJSON Heartbeat details (For Up/Down only)
* @returns {{STATUS: string, status: string, HOSTNAME_OR_URL: string, hostnameOrUrl: string, NAME: string, name: string, monitorJSON: ?object, heartbeatJSON: ?object, msg: string}} the context
*/
generateContext(msg, monitorJSON, heartbeatJSON) {
// Let's start with dummy values to simplify code
let monitorName = "Monitor Name not available";
let monitorHostnameOrURL = "testing.hostname";
if (monitorJSON !== null) {
monitorName = monitorJSON["name"];
if (monitorJSON["type"] === "http" || monitorJSON["type"] === "keyword" || monitorJSON["type"] === "json-query") {
monitorHostnameOrURL = monitorJSON["url"];
} else {
monitorHostnameOrURL = monitorJSON["hostname"];
}
}
let serviceStatus = "⚠️ Test";
if (heartbeatJSON !== null) {
serviceStatus = (heartbeatJSON["status"] === DOWN) ? "🔴 Down" : "✅ Up";
}
return {
// for v1 compatibility, to be removed in v3
"STATUS": serviceStatus,
"NAME": monitorName,
"HOSTNAME_OR_URL": monitorHostnameOrURL,
// variables which are officially supported
"status": serviceStatus,
"name": monitorName,
"hostnameOrURL": monitorHostnameOrURL,
monitorJSON,
heartbeatJSON,
msg,
};
}
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}
module.exports = SMTP;