console.log("Welcome to Uptime Kuma ") console.log("Importing libraries") const express = require('express'); const http = require('http'); const { Server } = require("socket.io"); const dayjs = require("dayjs"); const {R} = require("redbean-node"); const passwordHash = require('./password-hash'); const jwt = require('jsonwebtoken'); const Monitor = require("./model/monitor"); const fs = require("fs"); const {getSettings} = require("./util-server"); const {Notification} = require("./notification") const gracefulShutdown = require('http-graceful-shutdown'); const Database = require("./database"); const {sleep} = require("./util"); const args = require('args-parser')(process.argv); const prom_client = require('prom-client') const version = require('../package.json').version; const hostname = args.host || "0.0.0.0" const port = args.port || 3001 console.info("Version: " + version) console.log("Creating express and socket.io instance") const app = express(); const server = http.createServer(app); const io = new Server(server); app.use(express.json()) /** * Total WebSocket client connected to server currently, no actual use * @type {number} */ console.log("Setting up the Prometheus Client") const collectDefaultMetrics = prom_client.collectDefaultMetrics; collectDefaultMetrics({ prefix: 'uptimekuma' }); let totalClient = 0; /** * Use for decode the auth object * @type {null} */ let jwtSecret = null; /** * Main monitor list * @type {{}} */ let monitorList = {}; /** * Show Setup Page * @type {boolean} */ let needSetup = false; (async () => { await initDatabase(); console.log("Adding route") app.use('/', express.static("dist")); console.log("Adding /metrics") app.get('/metrics', function (req, res) { res.set('Content-Type', prom_client.register.contentType); res.end(prom_client.register.metrics()); }); app.get('*', function(request, response, next) { response.sendFile(process.cwd() + '/dist/index.html'); }); console.log("Adding socket handler") io.on('connection', async (socket) => { socket.emit("info", { version, }) totalClient++; if (needSetup) { console.log("Redirect to setup page") socket.emit("setup") } socket.on('disconnect', () => { totalClient--; }); // Public API 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 ", [ decoded.username ]) if (user) { await afterLogin(socket, user) callback({ ok: true, }) } else { callback({ ok: false, msg: "The user is inactive or deleted." }) } } catch (error) { callback({ ok: false, msg: "Invalid token." }) } }); socket.on("login", async (data, callback) => { console.log("Login") let user = await R.findOne("user", " username = ? AND active = 1 ", [ data.username ]) if (user && passwordHash.verify(data.password, user.password)) { // Upgrade the hash to bcrypt if (passwordHash.needRehash(user.password)) { await R.exec("UPDATE `user` SET password = ? WHERE id = ? ", [ passwordHash.generate(data.password), user.id ]); } await afterLogin(socket, user) callback({ ok: true, token: jwt.sign({ username: data.username }, jwtSecret) }) } else { callback({ ok: false, msg: "Incorrect username or password." }) } }); socket.on("logout", async (callback) => { socket.leave(socket.userID) socket.userID = null; callback(); }); 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, msg: "Added Successfully." }); } catch (e) { callback({ ok: false, msg: e.message }); } }); // Auth Only API socket.on("add", async (monitor, callback) => { try { checkLogin(socket) let bean = R.dispense("monitor") let notificationIDList = monitor.notificationIDList; delete monitor.notificationIDList; bean.import(monitor) bean.user_id = socket.userID await R.store(bean) await updateMonitorNotification(bean.id, notificationIDList) await startMonitor(socket.userID, bean.id); await sendMonitorList(socket); callback({ ok: true, msg: "Added Successfully.", monitorID: bean.id }); } catch (e) { callback({ ok: false, msg: e.message }); } }); 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 bean.hostname = monitor.hostname; bean.port = monitor.port; bean.keyword = monitor.keyword; await R.store(bean) await updateMonitorNotification(bean.id, monitor.notificationIDList) if (bean.active) { await restartMonitor(socket.userID, bean.id) } await sendMonitorList(socket); callback({ ok: true, msg: "Saved.", monitorID: bean.id }); } catch (e) { console.error(e) callback({ ok: false, msg: e.message }); } }); 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(), }); } catch (e) { callback({ ok: false, msg: e.message }); } }); // 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, msg: "Resumed Successfully." }); } catch (e) { callback({ ok: false, msg: e.message }); } }); socket.on("pauseMonitor", async (monitorID, callback) => { try { checkLogin(socket) await pauseMonitor(socket.userID, monitorID) await sendMonitorList(socket); callback({ ok: true, msg: "Paused Successfully." }); } catch (e) { callback({ ok: false, msg: e.message }); } }); 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, socket.userID ]); callback({ ok: true, msg: "Deleted Successfully." }); await sendMonitorList(socket); } catch (e) { callback({ ok: false, msg: e.message }); } }); 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 ", [ socket.userID ]) if (user && passwordHash.verify(password.currentPassword, user.password)) { await R.exec("UPDATE `user` SET password = ? WHERE id = ? ", [ passwordHash.generate(password.newPassword), socket.userID ]); callback({ ok: true, msg: "Password has been updated successfully." }) } else { throw new Error("Incorrect current password") } } catch (e) { callback({ ok: false, msg: e.message }); } }); socket.on("getSettings", async (type, callback) => { try { checkLogin(socket) callback({ ok: true, data: await getSettings(type), }); } catch (e) { callback({ ok: false, msg: e.message }); } }); // Add or Edit socket.on("addNotification", async (notification, notificationID, callback) => { try { checkLogin(socket) await Notification.save(notification, notificationID, socket.userID) await sendNotificationList(socket) callback({ ok: true, msg: "Saved", }); } catch (e) { callback({ ok: false, msg: e.message }); } }); 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, msg: e.message }); } }); socket.on("testNotification", async (notification, callback) => { try { checkLogin(socket) let msg = await Notification.send(notification, notification.name + " Testing") callback({ ok: true, msg }); } catch (e) { console.error(e) callback({ ok: false, msg: e.message }); } }); socket.on("checkApprise", async (callback) => { try { checkLogin(socket) callback(Notification.checkApprise()); } catch (e) { callback(false); } }); }); console.log("Init") server.listen(port, hostname, () => { console.log(`Listening on ${hostname}:${port}`); startMonitors(); }); })(); async function updateMonitorNotification(monitorID, notificationIDList) { R.exec("DELETE FROM monitor_notification WHERE monitor_id = ? ", [ 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) } } } 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) { let list = await getMonitorJSONList(socket.userID); io.to(socket.userID).emit("monitorList", list) return list; } async function sendNotificationList(socket) { let result = []; let list = await R.find("notification", " user_id = ? ", [ socket.userID ]); for (let bean of list) { result.push(bean.export()) } io.to(socket.userID).emit("notificationList", result) return list; } async function afterLogin(socket, user) { socket.userID = user.id; socket.join(user.id) let monitorList = await sendMonitorList(socket) for (let monitorID in monitorList) { await sendHeartbeatList(socket, monitorID); await sendImportantHeartbeatList(socket, monitorID); await Monitor.sendStats(io, monitorID, user.id) } await sendNotificationList(socket) } async function getMonitorJSONList(userID) { let result = {}; let monitorList = await R.find("monitor", " user_id = ? ", [ userID ]) for (let monitor of monitorList) { result[monitor.id] = await monitor.toJSON(); } return result; } function checkLogin(socket) { if (! socket.userID) { throw new Error("You are not logged in."); } } async function initDatabase() { if (! fs.existsSync(Database.path)) { console.log("Copying Database") fs.copyFileSync(Database.templatePath, Database.path); } console.log("Connecting to Database") R.setup('sqlite', { filename: Database.path }); console.log("Connected") // Patch the database await Database.patch() // Auto map the model to a bean object R.freeze(true) await R.autoloadModels("./server/model"); let jwtSecretBean = await R.findOne("setting", " `key` = ? ", [ "jwtSecret" ]); if (! jwtSecretBean) { console.log("JWT secret is not found, generate one.") jwtSecretBean = R.dispense("setting") jwtSecretBean.key = "jwtSecret" jwtSecretBean.value = passwordHash.generate(dayjs() + "") await R.store(jwtSecretBean) console.log("Stored JWT secret into database") } else { console.log("Load JWT secret from database.") } // If there is no record in user table, it is a new Uptime Kuma instance, need to setup if ((await R.count("user")) === 0) { console.log("No user, need setup") needSetup = true; } 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, userID ]); let monitor = await R.findOne("monitor", " id = ? ", [ monitorID ]) if (monitor.id in monitorList) { monitorList[monitor.id].stop(); } monitorList[monitor.id] = monitor; monitor.start(io) } async function restartMonitor(userID, monitorID) { return await startMonitor(userID, monitorID) } 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, userID ]); 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) { monitor.start(io) monitorList[monitor.id] = monitor; } } /** * Send Heartbeat History list to socket */ async function sendHeartbeatList(socket, monitorID) { let list = await R.find("heartbeat", ` monitor_id = ? ORDER BY time DESC LIMIT 100 `, [ monitorID ]) let result = []; for (let bean of list) { result.unshift(bean.toJSON()) } socket.emit("heartbeatList", monitorID, result) } async function sendImportantHeartbeatList(socket, monitorID) { let list = await R.find("heartbeat", ` monitor_id = ? AND important = 1 ORDER BY time DESC LIMIT 500 `, [ monitorID ]) socket.emit("importantHeartbeatList", monitorID, list) } const startGracefulShutdown = async () => { console.log('Shutdown requested'); await (new Promise((resolve) => { server.close(async function () { console.log('Stopped Express.'); process.exit(0) setTimeout(async () =>{ await R.close(); console.log("Stopped DB") resolve(); }, 5000) }); })); } async function shutdownFunction(signal) { console.log('Called signal: ' + signal); console.log("Stopping all monitors") for (let id in monitorList) { let monitor = monitorList[id] monitor.stop() } await sleep(2000); await Database.close(); } function finalFunction() { console.log('Graceful Shutdown') } gracefulShutdown(server, { signals: 'SIGINT SIGTERM', 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, ... finally: finalFunction // finally function (sync) - e.g. for logging });