uptime-kuma/server/server.js

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console.log("Welcome to Uptime Kuma");
console.log("Node Env: " + process.env.NODE_ENV);
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const { sleep, debug, TimeLogger, getRandomInt } = require("../src/util");
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console.log("Importing Node libraries")
const fs = require("fs");
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const http = require("http");
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const https = require("https");
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console.log("Importing 3rd-party libraries")
debug("Importing express");
const express = require("express");
debug("Importing socket.io");
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const { Server } = require("socket.io");
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debug("Importing redbean-node");
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const { R } = require("redbean-node");
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debug("Importing jsonwebtoken");
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const jwt = require("jsonwebtoken");
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debug("Importing http-graceful-shutdown");
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const gracefulShutdown = require("http-graceful-shutdown");
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debug("Importing prometheus-api-metrics");
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const prometheusAPIMetrics = require("prometheus-api-metrics");
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debug("Importing 2FA Modules");
const notp = require("notp");
const base32 = require("thirty-two");
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console.log("Importing this project modules");
debug("Importing Monitor");
const Monitor = require("./model/monitor");
debug("Importing Settings");
const { getSettings, setSettings, setting, initJWTSecret, genSecret, allowDevAllOrigin } = require("./util-server");
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debug("Importing Notification");
const { Notification } = require("./notification");
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Notification.init();
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debug("Importing Database");
const Database = require("./database");
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const { basicAuth } = require("./auth");
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const { login } = require("./auth");
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const passwordHash = require("./password-hash");
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const args = require("args-parser")(process.argv);
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const checkVersion = require("./check-version");
console.info("Version: " + checkVersion.version);
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// If host is omitted, the server will accept connections on the unspecified IPv6 address (::) when IPv6 is available and the unspecified IPv4 address (0.0.0.0) otherwise.
// Dual-stack support for (::)
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const hostname = process.env.HOST || args.host;
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const port = parseInt(process.env.PORT || args.port || 3001);
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// SSL
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const sslKey = process.env.SSL_KEY || args["ssl-key"] || undefined;
const sslCert = process.env.SSL_CERT || args["ssl-cert"] || undefined;
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// Demo Mode?
const demoMode = args["demo"] || false;
if (demoMode) {
console.log("==== Demo Mode ====");
}
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// Data Directory (must be end with "/")
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Database.dataDir = process.env.DATA_DIR || args["data-dir"] || "./data/";
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Database.path = Database.dataDir + "kuma.db";
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if (! fs.existsSync(Database.dataDir)) {
fs.mkdirSync(Database.dataDir, { recursive: true });
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}
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console.log(`Data Dir: ${Database.dataDir}`);
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console.log("Creating express and socket.io instance")
const app = express();
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let server;
if (sslKey && sslCert) {
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console.log("Server Type: HTTPS");
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server = https.createServer({
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key: fs.readFileSync(sslKey),
cert: fs.readFileSync(sslCert)
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}, app);
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} else {
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console.log("Server Type: HTTP");
server = http.createServer(app);
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}
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const io = new Server(server);
module.exports.io = io;
// Must be after io instantiation
const { sendNotificationList, sendHeartbeatList, sendImportantHeartbeatList } = require("./client");
app.use(express.json());
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/**
* Total WebSocket client connected to server currently, no actual use
* @type {number}
*/
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let totalClient = 0;
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/**
* Use for decode the auth object
* @type {null}
*/
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let jwtSecret = null;
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/**
* Main monitor list
* @type {{}}
*/
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let monitorList = {};
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/**
* Show Setup Page
* @type {boolean}
*/
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let needSetup = false;
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/**
* Cache Index HTML
* @type {string}
*/
let indexHTML = fs.readFileSync("./dist/index.html").toString();
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(async () => {
await initDatabase();
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console.log("Adding route")
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// ***************************
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// Normal Router here
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// ***************************
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// Robots.txt
app.get("/robots.txt", async (_request, response) => {
let txt = "User-agent: *\nDisallow:";
if (! await setting("searchEngineIndex")) {
txt += " /";
}
response.setHeader("Content-Type", "text/plain");
response.send(txt);
});
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// Basic Auth Router here
// Prometheus API metrics /metrics
// With Basic Auth using the first user's username/password
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app.get("/metrics", basicAuth, prometheusAPIMetrics());
app.use("/", express.static("dist"));
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// ***************************
// Public API
// ***************************
// Status Page Config
app.get("/api/status-page/config", async (_request, response) => {
allowDevAllOrigin(response);
let config = getSettings("statusPage");
if (! config.statusPageTheme) {
config.statusPageTheme = "light";
}
response.json(config);
});
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// Status Page - Monitor List
app.get("/api/status-page/monitor-list", async (_request, response) => {
allowDevAllOrigin(response);
const monitorList = {};
let list = await R.find("monitor", " public = 1 ORDER BY weight DESC, name ", [
]);
for (let monitor of list) {
monitorList[monitor.id] = await monitor.toJSON();
}
response.json(monitorList);
});
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// Status Page Polling Data
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app.get("/api/status-page/heartbeat", async (_request, response) => {
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allowDevAllOrigin(response);
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const monitorList = {};
let list = await R.find("", " ", [
])
for (let monitor of list) {
monitorList[monitor.id] = await monitor.toJSON();
}
response.json({
monitorList: monitorList,
});
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});
// Universal Route Handler, must be at the end of all express route.
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app.get("*", async (_request, response) => {
response.send(indexHTML);
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});
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console.log("Adding socket handler")
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io.on("connection", async (socket) => {
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socket.emit("info", {
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version: checkVersion.version,
latestVersion: checkVersion.latestVersion,
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})
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totalClient++;
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if (needSetup) {
console.log("Redirect to setup page")
socket.emit("setup")
}
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socket.on("disconnect", () => {
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totalClient--;
});
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// ***************************
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// Public Socket API
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// ***************************
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socket.on("loginByToken", async (token, callback) => {
try {
let decoded = jwt.verify(token, jwtSecret);
console.log("Username from JWT: " + decoded.username)
let user = await R.findOne("user", " username = ? AND active = 1 ", [
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decoded.username,
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])
if (user) {
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debug("afterLogin")
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afterLogin(socket, user)
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debug("afterLogin ok")
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callback({
ok: true,
})
} else {
callback({
ok: false,
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msg: "The user is inactive or deleted.",
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})
}
} catch (error) {
callback({
ok: false,
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msg: "Invalid token.",
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})
}
});
socket.on("login", async (data, callback) => {
console.log("Login")
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let user = await login(data.username, data.password)
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if (user) {
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afterLogin(socket, user)
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if (user.twofaStatus == 0) {
callback({
ok: true,
token: jwt.sign({
username: data.username,
}, jwtSecret),
})
}
if (user.twofaStatus == 1 && !data.token) {
callback({
tokenRequired: true,
})
}
if (data.token) {
let verify = notp.totp.verify(data.token, user.twofa_secret);
if (verify && verify.delta == 0) {
callback({
ok: true,
token: jwt.sign({
username: data.username,
}, jwtSecret),
})
} else {
callback({
ok: false,
msg: "Invalid Token!",
})
}
}
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} else {
callback({
ok: false,
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msg: "Incorrect username or password.",
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})
}
});
socket.on("logout", async (callback) => {
socket.leave(socket.userID)
socket.userID = null;
callback();
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});
socket.on("prepare2FA", async (callback) => {
try {
checkLogin(socket)
let user = await R.findOne("user", " id = ? AND active = 1 ", [
socket.userID,
])
if (user.twofa_status == 0) {
let newSecret = await genSecret()
let encodedSecret = base32.encode(newSecret);
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let uri = `otpauth://totp/Uptime%20Kuma:${user.username}?secret=${encodedSecret}`;
await R.exec("UPDATE `user` SET twofa_secret = ? WHERE id = ? ", [
newSecret,
socket.userID,
]);
callback({
ok: true,
uri: uri,
})
} else {
callback({
ok: false,
msg: "2FA is already enabled.",
})
}
} catch (error) {
callback({
ok: false,
msg: "Error while trying to prepare 2FA.",
})
}
});
socket.on("save2FA", async (callback) => {
try {
checkLogin(socket)
await R.exec("UPDATE `user` SET twofa_status = 1 WHERE id = ? ", [
socket.userID,
]);
callback({
ok: true,
msg: "2FA Enabled.",
})
} catch (error) {
callback({
ok: false,
msg: "Error while trying to change 2FA.",
})
}
});
socket.on("disable2FA", async (callback) => {
try {
checkLogin(socket)
await R.exec("UPDATE `user` SET twofa_status = 0 WHERE id = ? ", [
socket.userID,
]);
callback({
ok: true,
msg: "2FA Disabled.",
})
} catch (error) {
callback({
ok: false,
msg: "Error while trying to change 2FA.",
})
}
});
socket.on("verifyToken", async (token, callback) => {
let user = await R.findOne("user", " id = ? AND active = 1 ", [
socket.userID,
])
let verify = notp.totp.verify(token, user.twofa_secret);
if (verify && verify.delta == 0) {
callback({
ok: true,
valid: true,
})
} else {
callback({
ok: false,
msg: "Invalid Token.",
valid: false,
})
}
});
socket.on("twoFAStatus", async (callback) => {
checkLogin(socket)
try {
let user = await R.findOne("user", " id = ? AND active = 1 ", [
socket.userID,
])
if (user.twofa_status == 1) {
callback({
ok: true,
status: true,
})
} else {
callback({
ok: true,
status: false,
})
}
} catch (error) {
callback({
ok: false,
msg: "Error while trying to get 2FA status.",
})
}
});
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socket.on("needSetup", async (callback) => {
callback(needSetup);
});
socket.on("setup", async (username, password, callback) => {
try {
if ((await R.count("user")) !== 0) {
throw new Error("Uptime Kuma has been setup. If you want to setup again, please delete the database.")
}
let user = R.dispense("user")
user.username = username;
user.password = passwordHash.generate(password)
await R.store(user)
needSetup = false;
callback({
ok: true,
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msg: "Added Successfully.",
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});
} catch (e) {
callback({
ok: false,
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msg: e.message,
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});
}
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});
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// ***************************
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// Auth Only API
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// ***************************
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// Add a new monitor
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socket.on("add", async (monitor, callback) => {
try {
checkLogin(socket)
let bean = R.dispense("monitor")
let notificationIDList = monitor.notificationIDList;
delete monitor.notificationIDList;
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monitor.accepted_statuscodes_json = JSON.stringify(monitor.accepted_statuscodes);
delete monitor.accepted_statuscodes;
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bean.import(monitor)
bean.user_id = socket.userID
await R.store(bean)
await updateMonitorNotification(bean.id, notificationIDList)
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await startMonitor(socket.userID, bean.id);
await sendMonitorList(socket);
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callback({
ok: true,
msg: "Added Successfully.",
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monitorID: bean.id,
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});
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} catch (e) {
callback({
ok: false,
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msg: e.message,
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});
}
});
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// Edit a monitor
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socket.on("editMonitor", async (monitor, callback) => {
try {
checkLogin(socket)
let bean = await R.findOne("monitor", " id = ? ", [ monitor.id ])
if (bean.user_id !== socket.userID) {
throw new Error("Permission denied.")
}
bean.name = monitor.name
bean.type = monitor.type
bean.url = monitor.url
bean.interval = monitor.interval
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bean.hostname = monitor.hostname;
bean.maxretries = monitor.maxretries;
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bean.port = monitor.port;
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bean.keyword = monitor.keyword;
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bean.ignoreTls = monitor.ignoreTls;
bean.upsideDown = monitor.upsideDown;
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bean.maxredirects = monitor.maxredirects;
bean.accepted_statuscodes_json = JSON.stringify(monitor.accepted_statuscodes);
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bean.dns_resolve_type = monitor.dns_resolve_type;
bean.dns_resolve_server = monitor.dns_resolve_server;
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await R.store(bean)
await updateMonitorNotification(bean.id, monitor.notificationIDList)
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if (bean.active) {
await restartMonitor(socket.userID, bean.id)
}
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await sendMonitorList(socket);
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callback({
ok: true,
msg: "Saved.",
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monitorID: bean.id,
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});
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} catch (e) {
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console.error(e)
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callback({
ok: false,
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msg: e.message,
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});
}
});
socket.on("getMonitor", async (monitorID, callback) => {
try {
checkLogin(socket)
console.log(`Get Monitor: ${monitorID} User ID: ${socket.userID}`)
let bean = await R.findOne("monitor", " id = ? AND user_id = ? ", [
monitorID,
socket.userID,
])
callback({
ok: true,
monitor: await bean.toJSON(),
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});
} catch (e) {
callback({
ok: false,
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msg: e.message,
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});
}
});
// Start or Resume the monitor
socket.on("resumeMonitor", async (monitorID, callback) => {
try {
checkLogin(socket)
await startMonitor(socket.userID, monitorID);
await sendMonitorList(socket);
callback({
ok: true,
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msg: "Resumed Successfully.",
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});
} catch (e) {
callback({
ok: false,
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msg: e.message,
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});
}
});
socket.on("pauseMonitor", async (monitorID, callback) => {
try {
checkLogin(socket)
await pauseMonitor(socket.userID, monitorID)
await sendMonitorList(socket);
callback({
ok: true,
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msg: "Paused Successfully.",
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});
} catch (e) {
callback({
ok: false,
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msg: e.message,
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});
}
});
socket.on("deleteMonitor", async (monitorID, callback) => {
try {
checkLogin(socket)
console.log(`Delete Monitor: ${monitorID} User ID: ${socket.userID}`)
if (monitorID in monitorList) {
monitorList[monitorID].stop();
delete monitorList[monitorID]
}
await R.exec("DELETE FROM monitor WHERE id = ? AND user_id = ? ", [
monitorID,
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socket.userID,
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]);
callback({
ok: true,
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msg: "Deleted Successfully.",
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});
await sendMonitorList(socket);
} catch (e) {
callback({
ok: false,
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msg: e.message,
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});
}
});
socket.on("changePassword", async (password, callback) => {
try {
checkLogin(socket)
if (! password.currentPassword) {
throw new Error("Invalid new password")
}
let user = await R.findOne("user", " id = ? AND active = 1 ", [
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socket.userID,
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])
if (user && passwordHash.verify(password.currentPassword, user.password)) {
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user.resetPassword(password.newPassword);
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callback({
ok: true,
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msg: "Password has been updated successfully.",
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})
} else {
throw new Error("Incorrect current password")
}
} catch (e) {
callback({
ok: false,
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msg: e.message,
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});
}
});
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socket.on("getSettings", async (callback) => {
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try {
checkLogin(socket)
callback({
ok: true,
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data: await getSettings("general"),
});
} catch (e) {
callback({
ok: false,
msg: e.message,
});
}
});
socket.on("setSettings", async (data, callback) => {
try {
checkLogin(socket)
await setSettings("general", data)
callback({
ok: true,
msg: "Saved"
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});
} catch (e) {
callback({
ok: false,
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msg: e.message,
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});
}
});
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// Add or Edit
socket.on("addNotification", async (notification, notificationID, callback) => {
try {
checkLogin(socket)
let notificationBean = await Notification.save(notification, notificationID, socket.userID)
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await sendNotificationList(socket)
callback({
ok: true,
msg: "Saved",
id: notificationBean.id,
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});
} catch (e) {
callback({
ok: false,
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msg: e.message,
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});
}
});
socket.on("deleteNotification", async (notificationID, callback) => {
try {
checkLogin(socket)
await Notification.delete(notificationID, socket.userID)
await sendNotificationList(socket)
callback({
ok: true,
msg: "Deleted",
});
} catch (e) {
callback({
ok: false,
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msg: e.message,
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});
}
});
socket.on("testNotification", async (notification, callback) => {
try {
checkLogin(socket)
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let msg = await Notification.send(notification, notification.name + " Testing")
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callback({
ok: true,
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msg,
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});
} catch (e) {
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console.error(e)
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callback({
ok: false,
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msg: e.message,
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});
}
});
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socket.on("checkApprise", async (callback) => {
try {
checkLogin(socket)
callback(Notification.checkApprise());
} catch (e) {
callback(false);
}
});
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socket.on("uploadBackup", async (uploadedJSON, callback) => {
try {
checkLogin(socket)
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let backupData = JSON.parse(uploadedJSON);
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console.log(`Importing Backup, User ID: ${socket.userID}, Version: ${backupData.version}`)
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let notificationList = backupData.notificationList;
let monitorList = backupData.monitorList;
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if (notificationList.length >= 1) {
for (let i = 0; i < notificationList.length; i++) {
let notification = JSON.parse(notificationList[i].config);
await Notification.save(notification, null, socket.userID)
}
}
if (monitorList.length >= 1) {
for (let i = 0; i < monitorList.length; i++) {
let monitor = {
name: monitorList[i].name,
type: monitorList[i].type,
url: monitorList[i].url,
interval: monitorList[i].interval,
hostname: monitorList[i].hostname,
maxretries: monitorList[i].maxretries,
port: monitorList[i].port,
keyword: monitorList[i].keyword,
ignoreTls: monitorList[i].ignoreTls,
upsideDown: monitorList[i].upsideDown,
maxredirects: monitorList[i].maxredirects,
accepted_statuscodes: monitorList[i].accepted_statuscodes,
dns_resolve_type: monitorList[i].dns_resolve_type,
dns_resolve_server: monitorList[i].dns_resolve_server,
notificationIDList: {},
}
let bean = R.dispense("monitor")
let notificationIDList = monitor.notificationIDList;
delete monitor.notificationIDList;
monitor.accepted_statuscodes_json = JSON.stringify(monitor.accepted_statuscodes);
delete monitor.accepted_statuscodes;
bean.import(monitor)
bean.user_id = socket.userID
await R.store(bean)
await updateMonitorNotification(bean.id, notificationIDList)
if (monitorList[i].active == 1) {
await startMonitor(socket.userID, bean.id);
} else {
await pauseMonitor(socket.userID, bean.id);
}
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}
await sendNotificationList(socket)
await sendMonitorList(socket);
}
callback({
ok: true,
msg: "Backup successfully restored.",
});
} catch (e) {
callback({
ok: false,
msg: e.message,
});
}
});
socket.on("clearEvents", async (monitorID, callback) => {
try {
checkLogin(socket)
console.log(`Clear Events Monitor: ${monitorID} User ID: ${socket.userID}`)
await R.exec("UPDATE heartbeat SET msg = ?, important = ? WHERE monitor_id = ? ", [
"",
"0",
monitorID,
]);
await sendImportantHeartbeatList(socket, monitorID, true, true);
callback({
ok: true,
});
} catch (e) {
callback({
ok: false,
msg: e.message,
});
}
});
socket.on("clearHeartbeats", async (monitorID, callback) => {
try {
checkLogin(socket)
console.log(`Clear Heartbeats Monitor: ${monitorID} User ID: ${socket.userID}`)
await R.exec("DELETE FROM heartbeat WHERE monitor_id = ?", [
monitorID
]);
await sendHeartbeatList(socket, monitorID, true, true);
callback({
ok: true,
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});
} catch (e) {
callback({
ok: false,
msg: e.message,
});
}
});
socket.on("clearStatistics", async (callback) => {
try {
checkLogin(socket)
console.log(`Clear Statistics User ID: ${socket.userID}`)
await R.exec("DELETE FROM heartbeat");
callback({
ok: true,
});
} catch (e) {
callback({
ok: false,
msg: e.message,
});
}
});
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debug("added all socket handlers")
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// ***************************
// Better do anything after added all socket handlers here
// ***************************
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debug("check auto login")
if (await setting("disableAuth")) {
console.log("Disabled Auth: auto login to admin")
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afterLogin(socket, await R.findOne("user"))
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socket.emit("autoLogin")
} else {
debug("need auth")
}
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});
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console.log("Init the server")
server.once("error", async (err) => {
console.error("Cannot listen: " + err.message);
await Database.close();
});
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server.listen(port, hostname, () => {
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if (hostname) {
console.log(`Listening on ${hostname}:${port}`);
} else {
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console.log(`Listening on ${port}`);
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}
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startMonitors();
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checkVersion.startInterval();
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});
})();
async function updateMonitorNotification(monitorID, notificationIDList) {
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await R.exec("DELETE FROM monitor_notification WHERE monitor_id = ? ", [
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monitorID,
])
for (let notificationID in notificationIDList) {
if (notificationIDList[notificationID]) {
let relation = R.dispense("monitor_notification");
relation.monitor_id = monitorID;
relation.notification_id = notificationID;
await R.store(relation)
}
}
}
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async function checkOwner(userID, monitorID) {
let row = await R.getRow("SELECT id FROM monitor WHERE id = ? AND user_id = ? ", [
monitorID,
userID,
])
if (! row) {
throw new Error("You do not own this monitor.");
}
}
async function sendMonitorList(socket) {
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let list = await getMonitorJSONList(socket.userID);
io.to(socket.userID).emit("monitorList", list)
return list;
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}
async function afterLogin(socket, user) {
socket.userID = user.id;
socket.join(user.id)
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let monitorList = await sendMonitorList(socket)
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sendNotificationList(socket)
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await sleep(500);
for (let monitorID in monitorList) {
await sendHeartbeatList(socket, monitorID);
}
for (let monitorID in monitorList) {
await sendImportantHeartbeatList(socket, monitorID);
}
for (let monitorID in monitorList) {
await Monitor.sendStats(io, monitorID, user.id)
}
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}
async function getMonitorJSONList(userID) {
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let result = {};
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let monitorList = await R.find("monitor", " user_id = ? ORDER BY weight DESC, name", [
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userID,
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])
for (let monitor of monitorList) {
result[monitor.id] = await monitor.toJSON();
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}
return result;
}
function checkLogin(socket) {
if (! socket.userID) {
throw new Error("You are not logged in.");
}
}
async function initDatabase() {
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if (! fs.existsSync(Database.path)) {
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console.log("Copying Database")
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fs.copyFileSync(Database.templatePath, Database.path);
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}
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console.log("Connecting to Database")
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await Database.connect();
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console.log("Connected")
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// Patch the database
await Database.patch()
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let jwtSecretBean = await R.findOne("setting", " `key` = ? ", [
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"jwtSecret",
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]);
if (! jwtSecretBean) {
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console.log("JWT secret is not found, generate one.");
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jwtSecretBean = await initJWTSecret();
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console.log("Stored JWT secret into database");
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} else {
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console.log("Load JWT secret from database.");
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}
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// If there is no record in user table, it is a new Uptime Kuma instance, need to setup
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if ((await R.count("user")) === 0) {
console.log("No user, need setup")
needSetup = true;
}
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jwtSecret = jwtSecretBean.value;
}
async function startMonitor(userID, monitorID) {
await checkOwner(userID, monitorID)
console.log(`Resume Monitor: ${monitorID} User ID: ${userID}`)
await R.exec("UPDATE monitor SET active = 1 WHERE id = ? AND user_id = ? ", [
monitorID,
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userID,
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]);
let monitor = await R.findOne("monitor", " id = ? ", [
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monitorID,
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])
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if (monitor.id in monitorList) {
monitorList[monitor.id].stop();
}
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monitorList[monitor.id] = monitor;
monitor.start(io)
}
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async function restartMonitor(userID, monitorID) {
return await startMonitor(userID, monitorID)
}
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async function pauseMonitor(userID, monitorID) {
await checkOwner(userID, monitorID)
console.log(`Pause Monitor: ${monitorID} User ID: ${userID}`)
await R.exec("UPDATE monitor SET active = 0 WHERE id = ? AND user_id = ? ", [
monitorID,
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userID,
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]);
if (monitorID in monitorList) {
monitorList[monitorID].stop();
}
}
/**
* Resume active monitors
*/
async function startMonitors() {
let list = await R.find("monitor", " active = 1 ")
for (let monitor of list) {
monitorList[monitor.id] = monitor;
}
for (let monitor of list) {
monitor.start(io);
// Give some delays, so all monitors won't make request at the same moment when just start the server.
await sleep(getRandomInt(300, 1000));
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}
}
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async function shutdownFunction(signal) {
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console.log("Shutdown requested");
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console.log("Called signal: " + signal);
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console.log("Stopping all monitors")
for (let id in monitorList) {
let monitor = monitorList[id]
monitor.stop()
}
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await sleep(2000);
await Database.close();
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}
function finalFunction() {
console.log("Graceful shutdown successfully!");
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}
gracefulShutdown(server, {
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signals: "SIGINT SIGTERM",
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timeout: 30000, // timeout: 30 secs
development: false, // not in dev mode
forceExit: true, // triggers process.exit() at the end of shutdown process
onShutdown: shutdownFunction, // shutdown function (async) - e.g. for cleanup DB, ...
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finally: finalFunction, // finally function (sync) - e.g. for logging
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});
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// Catch unexpected errors here
process.addListener("unhandledRejection", (error, promise) => {
console.trace(error);
console.error("If you keep encountering errors, please report to https://github.com/louislam/uptime-kuma/issues");
});