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uptime-kuma/server/server.js

465 lines
12 KiB

const express = require('express');
const app = express();
const http = require('http');
const server = http.createServer(app);
const { Server } = require("socket.io");
const io = new Server(server);
const dayjs = require("dayjs");
const {R} = require("redbean-node");
const passwordHash = require('password-hash');
const jwt = require('jsonwebtoken');
const Monitor = require("./model/monitor");
let stop = false;
let interval = 6000;
let totalClient = 0;
let jwtSecret = null;
let loadFromDatabase = true;
let monitorList = {};
(async () => {
R.setup('sqlite', {
filename: './data/kuma.db'
});
R.freeze(true)
await R.autoloadModels("./server/model");
await initDatabase();
app.use('/', express.static("public"));
io.on('connection', async (socket) => {
console.log('a user connected');
totalClient++;
socket.on('disconnect', () => {
console.log('user disconnected');
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)) {
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();
});
// Auth Only API
socket.on("add", async (monitor, callback) => {
try {
checkLogin(socket)
let bean = R.dispense("monitor")
bean.import(monitor)
bean.user_id = socket.userID
await R.store(bean)
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
await R.store(bean)
if (bean.active) {
await restartMonitor(socket.userID, bean.id)
}
await sendMonitorList(socket);
callback({
ok: true,
msg: "Saved.",
monitorID: bean.id
});
} catch (e) {
console.log(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: 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
});
}
});
});
server.listen(3001, () => {
console.log('Listening on 3001');
startMonitors();
});
})();
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 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)
}
}
async function getMonitorJSONList(userID) {
let result = {};
let monitorList = await R.find("monitor", " user_id = ? ORDER BY active DESC, name ASC ", [
userID
])
for (let monitor of monitorList) {
result[monitor.id] = monitor.toJSON();
}
return result;
}
function checkLogin(socket) {
if (! socket.userID) {
throw new Error("You are not logged in.");
}
}
async function initDatabase() {
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)
} else {
console.log("Load JWT secret from database.")
}
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)
}