Merge remote-tracking branch 'origin/master' into feat/monitor-list-improved-filtering

2025-08-10 03:05:45 +08:00 · 2023-07-16 21:04:46 +08:00
parent f8c9a20afd 21d556528f
commit 80927332cb
80 changed files with 4291 additions and 4034 deletions
--- a/server/auth.js
+++ b/server/auth.js
@@ -2,6 +2,7 @@ const basicAuth = require("express-basic-auth");
 const passwordHash = require("./password-hash");
 const { R } = require("redbean-node");
 const { setting } = require("./util-server");
+const { log } = require("../src/util");
 const { loginRateLimiter, apiRateLimiter } = require("./rate-limiter");
 const { Settings } = require("./settings");
 const dayjs = require("dayjs");
@@ -81,12 +82,16 @@ function apiAuthorizer(username, password, callback) {
    apiRateLimiter.pass(null, 0).then((pass) => {
        if (pass) {
            verifyAPIKey(password).then((valid) => {
+                if (!valid) {
+                    log.warn("api-auth", "Failed API auth attempt: invalid API Key");
+                }
                callback(null, valid);
                // Only allow a set number of api requests per minute
                // (currently set to 60)
                apiRateLimiter.removeTokens(1);
            });
        } else {
+            log.warn("api-auth", "Failed API auth attempt: rate limit exceeded");
            callback(null, false);
        }
    });
@@ -106,10 +111,12 @@ function userAuthorizer(username, password, callback) {
                callback(null, user != null);

                if (user == null) {
+                    log.warn("basic-auth", "Failed basic auth attempt: invalid username/password");
                    loginRateLimiter.removeTokens(1);
                }
            });
        } else {
+            log.warn("basic-auth", "Failed basic auth attempt: rate limit exceeded");
            callback(null, false);
        }
    });
--- a/server/check-version.js
+++ b/server/check-version.js
@@ -1,27 +1,33 @@
 const { setSetting, setting } = require("./util-server");
 const axios = require("axios");
 const compareVersions = require("compare-versions");
+const { log } = require("../src/util");

 exports.version = require("../package.json").version;
 exports.latestVersion = null;

+// How much time in ms to wait between update checks
+const UPDATE_CHECKER_INTERVAL_MS = 1000 * 60 * 60 * 48;
+const UPDATE_CHECKER_LATEST_VERSION_URL = "https://uptime.kuma.pet/version";
+
 let interval;

-/** Start 48 hour check interval */
 exports.startInterval = () => {
    let check = async () => {
+        if (await setting("checkUpdate") === false) {
+            return;
+        }
+
+        log.debug("update-checker", "Retrieving latest versions");
+
        try {
-            const res = await axios.get("https://uptime.kuma.pet/version");
+            const res = await axios.get(UPDATE_CHECKER_LATEST_VERSION_URL);

            // For debug
            if (process.env.TEST_CHECK_VERSION === "1") {
                res.data.slow = "1000.0.0";
            }

-            if (await setting("checkUpdate") === false) {
-                return;
-            }
-
            let checkBeta = await setting("checkBeta");

            if (checkBeta && res.data.beta) {
@@ -35,12 +41,14 @@ exports.startInterval = () => {
                exports.latestVersion = res.data.slow;
            }

-        } catch (_) { }
+        } catch (_) {
+            log.info("update-checker", "Failed to check for new versions");
+        }

    };

    check();
-    interval = setInterval(check, 3600 * 1000 * 48);
+    interval = setInterval(check, UPDATE_CHECKER_INTERVAL_MS);
 };

 /**
--- a/server/client.js
+++ b/server/client.js
@@ -141,12 +141,21 @@ async function sendAPIKeyList(socket) {
 /**
 * Emits the version information to the client.
 * @param {Socket} socket Socket.io socket instance
+ * @param {boolean} hideVersion
 * @returns {Promise<void>}
 */
-async function sendInfo(socket) {
+async function sendInfo(socket, hideVersion = false) {
+    let version;
+    let latestVersion;
+
+    if (!hideVersion) {
+        version = checkVersion.version;
+        latestVersion = checkVersion.latestVersion;
+    }
+
    socket.emit("info", {
-        version: checkVersion.version,
-        latestVersion: checkVersion.latestVersion,
+        version,
+        latestVersion,
        primaryBaseURL: await setting("primaryBaseURL"),
        serverTimezone: await server.getTimezone(),
        serverTimezoneOffset: server.getTimezoneOffset(),
--- a/server/config.js
+++ b/server/config.js
@@ -1,4 +1,5 @@
-const args = require("args-parser")(process.argv);
+// Interop with browser
+const args = (typeof process !== "undefined") ? require("args-parser")(process.argv) : {};
 const demoMode = args["demo"] || false;

 const badgeConstants = {
--- a/server/database.js
+++ b/server/database.js
@@ -3,7 +3,6 @@ const { R } = require("redbean-node");
 const { setSetting, setting } = require("./util-server");
 const { log, sleep } = require("../src/util");
 const knex = require("knex");
-const { PluginsManager } = require("./plugins-manager");

 /**
 * Database & App Data Folder
@@ -22,6 +21,8 @@ class Database {
     */
    static uploadDir;

+    static screenshotDir;
+
    static path;

    /**
@@ -70,6 +71,8 @@ class Database {
        "patch-monitor-tls.sql": true,
        "patch-maintenance-cron.sql": true,
        "patch-add-parent-monitor.sql": true,
+        "patch-add-invert-keyword.sql": true,
+        "patch-added-json-query.sql": true,
    };

    /**
@@ -88,12 +91,6 @@ class Database {
        // Data Directory (must be end with "/")
        Database.dataDir = process.env.DATA_DIR || args["data-dir"] || "./data/";

-        // Plugin feature is working only if the dataDir = "./data";
-        if (Database.dataDir !== "./data/") {
-            log.warn("PLUGIN", "Warning: In order to enable plugin feature, you need to use the default data directory: ./data/");
-            PluginsManager.disable = true;
-        }
-
        Database.path = Database.dataDir + "kuma.db";
        if (! fs.existsSync(Database.dataDir)) {
            fs.mkdirSync(Database.dataDir, { recursive: true });
@@ -105,6 +102,12 @@ class Database {
            fs.mkdirSync(Database.uploadDir, { recursive: true });
        }

+        // Create screenshot dir
+        Database.screenshotDir = Database.dataDir + "screenshots/";
+        if (! fs.existsSync(Database.screenshotDir)) {
+            fs.mkdirSync(Database.screenshotDir, { recursive: true });
+        }
+
        log.info("db", `Data Dir: ${Database.dataDir}`);
    }

@@ -161,12 +164,12 @@ class Database {
            await R.exec("PRAGMA journal_mode = WAL");
        }
        await R.exec("PRAGMA cache_size = -12000");
-        await R.exec("PRAGMA auto_vacuum = FULL");
+        await R.exec("PRAGMA auto_vacuum = INCREMENTAL");

        // This ensures that an operating system crash or power failure will not corrupt the database.
        // FULL synchronous is very safe, but it is also slower.
        // Read more: https://sqlite.org/pragma.html#pragma_synchronous
-        await R.exec("PRAGMA synchronous = FULL");
+        await R.exec("PRAGMA synchronous = NORMAL");

        if (!noLog) {
            log.info("db", "SQLite config:");
--- a/server/git.js
+++ b/server/git.js
@@ -1,24 +0,0 @@
-const childProcess = require("child_process");
-
-class Git {
-
-    static clone(repoURL, cwd, targetDir = ".") {
-        let result = childProcess.spawnSync("git", [
-            "clone",
-            repoURL,
-            targetDir,
-        ], {
-            cwd: cwd,
-        });
-
-        if (result.status !== 0) {
-            throw new Error(result.stderr.toString("utf-8"));
-        } else {
-            return result.stdout.toString("utf-8") + result.stderr.toString("utf-8");
-        }
-    }
-}
-
-module.exports = {
-    Git,
-};
--- a/server/jobs.js
+++ b/server/jobs.js
@@ -1,5 +1,6 @@
 const { UptimeKumaServer } = require("./uptime-kuma-server");
 const { clearOldData } = require("./jobs/clear-old-data");
+const { incrementalVacuum } = require("./jobs/incremental-vacuum");
 const Cron = require("croner");

 const jobs = [
@@ -9,6 +10,12 @@ const jobs = [
        jobFunc: clearOldData,
        croner: null,
    },
+    {
+        name: "incremental-vacuum",
+        interval: "*/5 * * * *",
+        jobFunc: incrementalVacuum,
+        croner: null,
+    }
 ];

 /**
--- a/server/jobs/clear-old-data.js
+++ b/server/jobs/clear-old-data.js
@@ -39,6 +39,8 @@ const clearOldData = async () => {
                "DELETE FROM heartbeat WHERE time < DATETIME('now', '-' || ? || ' days') ",
                [ parsedPeriod ]
            );
+
+            await R.exec("PRAGMA optimize;");
        } catch (e) {
            log.error("clearOldData", `Failed to clear old data: ${e.message}`);
        }
--- a/server/jobs/incremental-vacuum.js
+++ b/server/jobs/incremental-vacuum.js
@@ -0,0 +1,21 @@
+const { R } = require("redbean-node");
+const { log } = require("../../src/util");
+
+/**
+ * Run incremental_vacuum and checkpoint the WAL.
+ * @return {Promise<void>} A promise that resolves when the process is finished.
+ */
+
+const incrementalVacuum = async () => {
+    try {
+        log.debug("incrementalVacuum", "Running incremental_vacuum and wal_checkpoint(PASSIVE)...");
+        await R.exec("PRAGMA incremental_vacuum(200)");
+        await R.exec("PRAGMA wal_checkpoint(PASSIVE)");
+    } catch (e) {
+        log.error("incrementalVacuum", `Failed: ${e.message}`);
+    }
+};
+
+module.exports = {
+    incrementalVacuum,
+};
--- a/server/model/monitor.js
+++ b/server/model/monitor.js
@@ -20,6 +20,8 @@ const { CacheableDnsHttpAgent } = require("../cacheable-dns-http-agent");
 const { DockerHost } = require("../docker");
 const { UptimeCacheList } = require("../uptime-cache-list");
 const Gamedig = require("gamedig");
+const jsonata = require("jsonata");
+const jwt = require("jsonwebtoken");

 /**
 * status:
@@ -70,6 +72,12 @@ class Monitor extends BeanModel {

        const tags = await this.getTags();

+        let screenshot = null;
+
+        if (this.type === "real-browser") {
+            screenshot = "/screenshots/" + jwt.sign(this.id, UptimeKumaServer.getInstance().jwtSecret) + ".png";
+        }
+
        let data = {
            id: this.id,
            name: this.name,
@@ -90,6 +98,7 @@ class Monitor extends BeanModel {
            retryInterval: this.retryInterval,
            resendInterval: this.resendInterval,
            keyword: this.keyword,
+            invertKeyword: this.isInvertKeyword(),
            expiryNotification: this.isEnabledExpiryNotification(),
            ignoreTls: this.getIgnoreTls(),
            upsideDown: this.isUpsideDown(),
@@ -117,7 +126,10 @@ class Monitor extends BeanModel {
            radiusCalledStationId: this.radiusCalledStationId,
            radiusCallingStationId: this.radiusCallingStationId,
            game: this.game,
-            httpBodyEncoding: this.httpBodyEncoding
+            httpBodyEncoding: this.httpBodyEncoding,
+            jsonPath: this.jsonPath,
+            expectedValue: this.expectedValue,
+            screenshot,
        };

        if (includeSensitiveData) {
@@ -199,6 +211,14 @@ class Monitor extends BeanModel {
        return Boolean(this.upsideDown);
    }

+    /**
+     * Parse to boolean
+     * @returns {boolean}
+     */
+    isInvertKeyword() {
+        return Boolean(this.invertKeyword);
+    }
+
    /**
     * Parse to boolean
     * @returns {boolean}
@@ -303,7 +323,7 @@ class Monitor extends BeanModel {
                        bean.msg = "Group empty";
                    }

-                } else if (this.type === "http" || this.type === "keyword") {
+                } else if (this.type === "http" || this.type === "keyword" || this.type === "json-query") {
                    // Do not do any queries/high loading things before the "bean.ping"
                    let startTime = dayjs().valueOf();

@@ -431,7 +451,7 @@ class Monitor extends BeanModel {

                    if (this.type === "http") {
                        bean.status = UP;
-                    } else {
+                    } else if (this.type === "keyword") {

                        let data = res.data;

@@ -440,17 +460,37 @@ class Monitor extends BeanModel {
                            data = JSON.stringify(data);
                        }

-                        if (data.includes(this.keyword)) {
-                            bean.msg += ", keyword is found";
+                        let keywordFound = data.includes(this.keyword);
+                        if (keywordFound === !this.isInvertKeyword()) {
+                            bean.msg += ", keyword " + (keywordFound ? "is" : "not") + " found";
                            bean.status = UP;
                        } else {
                            data = data.replace(/<[^>]*>?|[\n\r]|\s+/gm, " ").trim();
                            if (data.length > 50) {
                                data = data.substring(0, 47) + "...";
                            }
-                            throw new Error(bean.msg + ", but keyword is not in [" + data + "]");
+                            throw new Error(bean.msg + ", but keyword is " +
+                                (keywordFound ? "present" : "not") + " in [" + data + "]");
                        }

+                    } else if (this.type === "json-query") {
+                        let data = res.data;
+
+                        // convert data to object
+                        if (typeof data === "string") {
+                            data = JSON.parse(data);
+                        }
+
+                        let expression = jsonata(this.jsonPath);
+
+                        let result = await expression.evaluate(data);
+
+                        if (result.toString() === this.expectedValue) {
+                            bean.msg += ", expected value is found";
+                            bean.status = UP;
+                        } else {
+                            throw new Error(bean.msg + ", but value is not equal to expected value, value was: [" + result + "]");
+                        }
                    }

                } else if (this.type === "port") {
@@ -525,7 +565,7 @@ class Monitor extends BeanModel {
                            // No need to insert successful heartbeat for push type, so end here
                            retries = 0;
                            log.debug("monitor", `[${this.name}] timeout = ${timeout}`);
-                            this.heartbeatInterval = setTimeout(beat, timeout);
+                            this.heartbeatInterval = setTimeout(safeBeat, timeout);
                            return;
                        }
                    } else {
@@ -618,9 +658,15 @@ class Monitor extends BeanModel {

                    log.debug("monitor", `[${this.name}] Axios Request`);
                    let res = await axios.request(options);
+
                    if (res.data.State.Running) {
-                        bean.status = UP;
-                        bean.msg = res.data.State.Status;
+                        if (res.data.State.Health && res.data.State.Health.Status !== "healthy") {
+                            bean.status = PENDING;
+                            bean.msg = res.data.State.Health.Status;
+                        } else {
+                            bean.status = UP;
+                            bean.msg = res.data.State.Health ? res.data.State.Health.Status : res.data.State.Status;
+                        }
                    } else {
                        throw Error("Container State is " + res.data.State.Status);
                    }
@@ -649,7 +695,6 @@ class Monitor extends BeanModel {
                        grpcEnableTls: this.grpcEnableTls,
                        grpcMethod: this.grpcMethod,
                        grpcBody: this.grpcBody,
-                        keyword: this.keyword
                    };
                    const response = await grpcQuery(options);
                    bean.ping = dayjs().valueOf() - startTime;
@@ -662,13 +707,14 @@ class Monitor extends BeanModel {
                        bean.status = DOWN;
                        bean.msg = `Error in send gRPC ${response.code} ${response.errorMessage}`;
                    } else {
-                        if (response.data.toString().includes(this.keyword)) {
+                        let keywordFound = response.data.toString().includes(this.keyword);
+                        if (keywordFound === !this.isInvertKeyword()) {
                            bean.status = UP;
-                            bean.msg = `${responseData}, keyword [${this.keyword}] is found`;
+                            bean.msg = `${responseData}, keyword [${this.keyword}] ${keywordFound ? "is" : "not"} found`;
                        } else {
-                            log.debug("monitor:", `GRPC response [${response.data}] + ", but keyword [${this.keyword}] is not in [" + ${response.data} + "]"`);
+                            log.debug("monitor:", `GRPC response [${response.data}] + ", but keyword [${this.keyword}] is ${keywordFound ? "present" : "not"} in [" + ${response.data} + "]"`);
                            bean.status = DOWN;
-                            bean.msg = `, but keyword [${this.keyword}] is not in [" + ${responseData} + "]`;
+                            bean.msg = `, but keyword [${this.keyword}] is ${keywordFound ? "present" : "not"} in [" + ${responseData} + "]`;
                        }
                    }
                } else if (this.type === "postgres") {
@@ -715,7 +761,8 @@ class Monitor extends BeanModel {
                            this.radiusCalledStationId,
                            this.radiusCallingStationId,
                            this.radiusSecret,
-                            port
+                            port,
+                            this.interval * 1000 * 0.8,
                        );
                        if (resp.code) {
                            bean.msg = resp.code;
@@ -740,7 +787,7 @@ class Monitor extends BeanModel {
                } else if (this.type in UptimeKumaServer.monitorTypeList) {
                    let startTime = dayjs().valueOf();
                    const monitorType = UptimeKumaServer.monitorTypeList[this.type];
-                    await monitorType.check(this, bean);
+                    await monitorType.check(this, bean, UptimeKumaServer.getInstance());
                    if (!bean.ping) {
                        bean.ping = dayjs().valueOf() - startTime;
                    }
@@ -1463,6 +1510,17 @@ class Monitor extends BeanModel {
        return childrenIDs;
    }

+    /**
+     * Unlinks all children of the the group monitor
+     * @param {number} groupID ID of group to remove children of
+     * @returns {Promise<void>}
+     */
+    static async unlinkAllChildren(groupID) {
+        return await R.exec("UPDATE `monitor` SET parent = ? WHERE parent = ? ", [
+            null, groupID
+        ]);
+    }
+
    /**
 	 * Checks recursive if parent (ancestors) are active
 	 * @param {number} monitorID ID of the monitor to get
--- a/server/monitor-types/monitor-type.js
+++ b/server/monitor-types/monitor-type.js
@@ -6,9 +6,10 @@ class MonitorType {
     *
     * @param {Monitor} monitor
     * @param {Heartbeat} heartbeat
+     * @param {UptimeKumaServer} server
     * @returns {Promise<void>}
     */
-    async check(monitor, heartbeat) {
+    async check(monitor, heartbeat, server) {
        throw new Error("You need to override check()");
    }

--- a/server/monitor-types/real-browser-monitor-type.js
+++ b/server/monitor-types/real-browser-monitor-type.js
@@ -0,0 +1,212 @@
+const { MonitorType } = require("./monitor-type");
+const { chromium } = require("playwright-core");
+const { UP, log } = require("../../src/util");
+const { Settings } = require("../settings");
+const commandExistsSync = require("command-exists").sync;
+const childProcess = require("child_process");
+const path = require("path");
+const Database = require("../database");
+const jwt = require("jsonwebtoken");
+const config = require("../config");
+
+let browser = null;
+
+let allowedList = [];
+let lastAutoDetectChromeExecutable = null;
+
+if (process.platform === "win32") {
+    allowedList.push(process.env.LOCALAPPDATA + "\\Google\\Chrome\\Application\\chrome.exe");
+    allowedList.push(process.env.PROGRAMFILES + "\\Google\\Chrome\\Application\\chrome.exe");
+    allowedList.push(process.env["ProgramFiles(x86)"] + "\\Google\\Chrome\\Application\\chrome.exe");
+
+    // Allow Chromium too
+    allowedList.push(process.env.LOCALAPPDATA + "\\Chromium\\Application\\chrome.exe");
+    allowedList.push(process.env.PROGRAMFILES + "\\Chromium\\Application\\chrome.exe");
+    allowedList.push(process.env["ProgramFiles(x86)"] + "\\Chromium\\Application\\chrome.exe");
+
+    // For Loop A to Z
+    for (let i = 65; i <= 90; i++) {
+        let drive = String.fromCharCode(i);
+        allowedList.push(drive + ":\\Program Files\\Google\\Chrome\\Application\\chrome.exe");
+        allowedList.push(drive + ":\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe");
+    }
+
+} else if (process.platform === "linux") {
+    allowedList = [
+        "chromium",
+        "chromium-browser",
+        "google-chrome",
+
+        "/usr/bin/chromium",
+        "/usr/bin/chromium-browser",
+        "/usr/bin/google-chrome",
+    ];
+} else if (process.platform === "darwin") {
+    // TODO: Generated by GitHub Copilot, but not sure if it's correct
+    allowedList = [
+        "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome",
+        "/Applications/Chromium.app/Contents/MacOS/Chromium",
+    ];
+}
+
+log.debug("chrome", allowedList);
+
+async function isAllowedChromeExecutable(executablePath) {
+    console.log(config.args);
+    if (config.args["allow-all-chrome-exec"] || process.env.UPTIME_KUMA_ALLOW_ALL_CHROME_EXEC === "1") {
+        return true;
+    }
+
+    // Check if the executablePath is in the list of allowed executables
+    return allowedList.includes(executablePath);
+}
+
+async function getBrowser() {
+    if (!browser) {
+        let executablePath = await Settings.get("chromeExecutable");
+
+        executablePath = await prepareChromeExecutable(executablePath);
+
+        browser = await chromium.launch({
+            //headless: false,
+            executablePath,
+        });
+    }
+    return browser;
+}
+
+async function prepareChromeExecutable(executablePath) {
+    // Special code for using the playwright_chromium
+    if (typeof executablePath === "string" && executablePath.toLocaleLowerCase() === "#playwright_chromium") {
+        // Set to undefined = use playwright_chromium
+        executablePath = undefined;
+    } else if (!executablePath) {
+        if (process.env.UPTIME_KUMA_IS_CONTAINER) {
+            executablePath = "/usr/bin/chromium";
+
+            // Install chromium in container via apt install
+            if ( !commandExistsSync(executablePath)) {
+                await new Promise((resolve, reject) => {
+                    log.info("Chromium", "Installing Chromium...");
+                    let child = childProcess.exec("apt update && apt --yes --no-install-recommends install chromium fonts-indic fonts-noto fonts-noto-cjk");
+
+                    // On exit
+                    child.on("exit", (code) => {
+                        log.info("Chromium", "apt install chromium exited with code " + code);
+
+                        if (code === 0) {
+                            log.info("Chromium", "Installed Chromium");
+                            let version = childProcess.execSync(executablePath + " --version").toString("utf8");
+                            log.info("Chromium", "Chromium version: " + version);
+                            resolve();
+                        } else if (code === 100) {
+                            reject(new Error("Installing Chromium, please wait..."));
+                        } else {
+                            reject(new Error("apt install chromium failed with code " + code));
+                        }
+                    });
+                });
+            }
+
+        } else {
+            executablePath = findChrome(allowedList);
+        }
+    } else {
+        // User specified a path
+        // Check if the executablePath is in the list of allowed
+        if (!await isAllowedChromeExecutable(executablePath)) {
+            throw new Error("This Chromium executable path is not allowed by default. If you are sure this is safe, please add an environment variable UPTIME_KUMA_ALLOW_ALL_CHROME_EXEC=1 to allow it.");
+        }
+    }
+    return executablePath;
+}
+
+function findChrome(executables) {
+    // Use the last working executable, so we don't have to search for it again
+    if (lastAutoDetectChromeExecutable) {
+        if (commandExistsSync(lastAutoDetectChromeExecutable)) {
+            return lastAutoDetectChromeExecutable;
+        }
+    }
+
+    for (let executable of executables) {
+        if (commandExistsSync(executable)) {
+            lastAutoDetectChromeExecutable = executable;
+            return executable;
+        }
+    }
+    throw new Error("Chromium not found, please specify Chromium executable path in the settings page.");
+}
+
+async function resetChrome() {
+    if (browser) {
+        await browser.close();
+        browser = null;
+    }
+}
+
+/**
+ * Test if the chrome executable is valid and return the version
+ * @param executablePath
+ * @returns {Promise<string>}
+ */
+async function testChrome(executablePath) {
+    try {
+        executablePath = await prepareChromeExecutable(executablePath);
+
+        log.info("Chromium", "Testing Chromium executable: " + executablePath);
+
+        const browser = await chromium.launch({
+            executablePath,
+        });
+        const version = browser.version();
+        await browser.close();
+        return version;
+    } catch (e) {
+        throw new Error(e.message);
+    }
+}
+
+/**
+ * TODO: connect remote browser? https://playwright.dev/docs/api/class-browsertype#browser-type-connect
+ *
+ */
+class RealBrowserMonitorType extends MonitorType {
+
+    name = "real-browser";
+
+    async check(monitor, heartbeat, server) {
+        const browser = await getBrowser();
+        const context = await browser.newContext();
+        const page = await context.newPage();
+
+        const res = await page.goto(monitor.url, {
+            waitUntil: "networkidle",
+            timeout: monitor.interval * 1000 * 0.8,
+        });
+
+        let filename = jwt.sign(monitor.id, server.jwtSecret) + ".png";
+
+        await page.screenshot({
+            path: path.join(Database.screenshotDir, filename),
+        });
+
+        await context.close();
+
+        if (res.status() >= 200 && res.status() < 400) {
+            heartbeat.status = UP;
+            heartbeat.msg = res.status();
+
+            const timing = res.request().timing();
+            heartbeat.ping = timing.responseEnd;
+        } else {
+            throw new Error(res.status() + "");
+        }
+    }
+}
+
+module.exports = {
+    RealBrowserMonitorType,
+    testChrome,
+    resetChrome,
+};
--- a/server/notification-providers/home-assistant.js
+++ b/server/notification-providers/home-assistant.js
@@ -11,7 +11,7 @@ class HomeAssistant extends NotificationProvider {

        try {
            await axios.post(
-                `${notification.homeAssistantUrl}/api/services/notify/${notificationService}`,
+                `${notification.homeAssistantUrl.trim().replace(/\/*$/, "")}/api/services/notify/${notificationService}`,
                {
                    title: "Uptime Kuma",
                    message,
--- a/server/notification-providers/slack.js
+++ b/server/notification-providers/slack.js
@@ -27,6 +27,11 @@ class Slack extends NotificationProvider {

    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
        let okMsg = "Sent Successfully.";
+
+        if (notification.slackchannelnotify) {
+            msg += " <!channel>";
+        }
+
        try {
            if (heartbeatJSON == null) {
                let data = {
@@ -53,7 +58,7 @@ class Slack extends NotificationProvider {
                                "type": "header",
                                "text": {
                                    "type": "plain_text",
-                                    "text": "Uptime Kuma Alert",
+                                    "text": textMsg,
                                },
                            },
                            {
--- a/server/notification-providers/smsc.js
+++ b/server/notification-providers/smsc.js
@@ -0,0 +1,42 @@
+const NotificationProvider = require("./notification-provider");
+const axios = require("axios");
+
+class SMSC extends NotificationProvider {
+    name = "smsc";
+
+    async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
+        let okMsg = "Sent Successfully.";
+        try {
+            let config = {
+                headers: {
+                    "Content-Type": "application/json",
+                    "Accept": "text/json",
+                }
+            };
+
+            let getArray = [
+                "fmt=3",
+                "translit=" + notification.smscTranslit,
+                "login=" + notification.smscLogin,
+                "psw=" + notification.smscPassword,
+                "phones=" + notification.smscToNumber,
+                "mes=" + encodeURIComponent(msg.replace(/[^\x00-\x7F]/g, "")),
+            ];
+            if (notification.smscSenderName !== "") {
+                getArray.push("sender=" + notification.smscSenderName);
+            }
+
+            let resp = await axios.get("https://smsc.kz/sys/send.php?" + getArray.join("&"), config);
+            if (resp.data.id === undefined) {
+                let error = `Something gone wrong. Api returned code ${resp.data.error_code}: ${resp.data.error}`;
+                this.throwGeneralAxiosError(error);
+            }
+
+            return okMsg;
+        } catch (error) {
+            this.throwGeneralAxiosError(error);
+        }
+    }
+}
+
+module.exports = SMSC;
--- a/server/notification-providers/smtp.js
+++ b/server/notification-providers/smtp.js
@@ -67,7 +67,7 @@ class SMTP extends NotificationProvider {
                if (monitorJSON !== null) {
                    monitorName = monitorJSON["name"];

-                    if (monitorJSON["type"] === "http" || monitorJSON["type"] === "keyword") {
+                    if (monitorJSON["type"] === "http" || monitorJSON["type"] === "keyword" || monitorJSON["type"] === "json-query") {
                        monitorHostnameOrURL = monitorJSON["url"];
                    } else {
                        monitorHostnameOrURL = monitorJSON["hostname"];
--- a/server/notification-providers/twilio.js
+++ b/server/notification-providers/twilio.js
@@ -10,6 +10,7 @@ class Twilio extends NotificationProvider {
        let okMsg = "Sent Successfully.";

        let accountSID = notification.twilioAccountSID;
+        let apiKey = notification.twilioApiKey ? notification.twilioApiKey : accountSID;
        let authToken = notification.twilioAuthToken;

        try {
@@ -17,7 +18,7 @@ class Twilio extends NotificationProvider {
            let config = {
                headers: {
                    "Content-Type": "application/x-www-form-urlencoded;charset=utf-8",
-                    "Authorization": "Basic " + Buffer.from(accountSID + ":" + authToken).toString("base64"),
+                    "Authorization": "Basic " + Buffer.from(apiKey + ":" + authToken).toString("base64"),
                }
            };

--- a/server/notification-providers/webhook.js
+++ b/server/notification-providers/webhook.js
@@ -1,6 +1,7 @@
 const NotificationProvider = require("./notification-provider");
 const axios = require("axios");
 const FormData = require("form-data");
+const { Liquid } = require("liquidjs");

 class Webhook extends NotificationProvider {

@@ -15,17 +16,27 @@ class Webhook extends NotificationProvider {
                monitor: monitorJSON,
                msg,
            };
-            let finalData;
            let config = {
                headers: {}
            };

            if (notification.webhookContentType === "form-data") {
-                finalData = new FormData();
-                finalData.append("data", JSON.stringify(data));
-                config.headers = finalData.getHeaders();
-            } else {
-                finalData = data;
+                const formData = new FormData();
+                formData.append("data", JSON.stringify(data));
+                config.headers = formData.getHeaders();
+                data = formData;
+            } else if (notification.webhookContentType === "custom") {
+                // Initialize LiquidJS and parse the custom Body Template
+                const engine = new Liquid();
+                const tpl = engine.parse(notification.webhookCustomBody);
+
+                // Insert templated values into Body
+                data = await engine.render(tpl,
+                    {
+                        msg,
+                        heartbeatJSON,
+                        monitorJSON
+                    });
            }

            if (notification.webhookAdditionalHeaders) {
@@ -39,7 +50,7 @@ class Webhook extends NotificationProvider {
                }
            }

-            await axios.post(notification.webhookURL, finalData, config);
+            await axios.post(notification.webhookURL, data, config);
            return okMsg;

        } catch (error) {
--- a/server/notification.js
+++ b/server/notification.js
@@ -6,6 +6,7 @@ const AliyunSms = require("./notification-providers/aliyun-sms");
 const Apprise = require("./notification-providers/apprise");
 const Bark = require("./notification-providers/bark");
 const ClickSendSMS = require("./notification-providers/clicksendsms");
+const SMSC = require("./notification-providers/smsc");
 const DingDing = require("./notification-providers/dingding");
 const Discord = require("./notification-providers/discord");
 const Feishu = require("./notification-providers/feishu");
@@ -68,6 +69,7 @@ class Notification {
            new Apprise(),
            new Bark(),
            new ClickSendSMS(),
+            new SMSC(),
            new DingDing(),
            new Discord(),
            new Feishu(),
--- a/server/plugin.js
+++ b/server/plugin.js
@@ -1,13 +0,0 @@
-class Plugin {
-    async load() {
-
-    }
-
-    async unload() {
-
-    }
-}
-
-module.exports = {
-    Plugin,
-};
--- a/server/plugins-manager.js
+++ b/server/plugins-manager.js
@@ -1,256 +0,0 @@
-const fs = require("fs");
-const { log } = require("../src/util");
-const path = require("path");
-const axios = require("axios");
-const { Git } = require("./git");
-const childProcess = require("child_process");
-
-class PluginsManager {
-
-    static disable = false;
-
-    /**
-     * Plugin List
-     * @type {PluginWrapper[]}
-     */
-    pluginList = [];
-
-    /**
-     * Plugins Dir
-     */
-    pluginsDir;
-
-    server;
-
-    /**
-     *
-     * @param {UptimeKumaServer} server
-     */
-    constructor(server) {
-        this.server = server;
-
-        if (!PluginsManager.disable) {
-            this.pluginsDir = "./data/plugins/";
-
-            if (! fs.existsSync(this.pluginsDir)) {
-                fs.mkdirSync(this.pluginsDir, { recursive: true });
-            }
-
-            log.debug("plugin", "Scanning plugin directory");
-            let list = fs.readdirSync(this.pluginsDir);
-
-            this.pluginList = [];
-            for (let item of list) {
-                this.loadPlugin(item);
-            }
-
-        } else {
-            log.warn("PLUGIN", "Skip scanning plugin directory");
-        }
-
-    }
-
-    /**
-     * Install a Plugin
-     */
-    async loadPlugin(name) {
-        log.info("plugin", "Load " + name);
-        let plugin = new PluginWrapper(this.server, this.pluginsDir + name);
-
-        try {
-            await plugin.load();
-            this.pluginList.push(plugin);
-        } catch (e) {
-            log.error("plugin", "Failed to load plugin: " + this.pluginsDir + name);
-            log.error("plugin", "Reason: " + e.message);
-        }
-    }
-
-    /**
-     * Download a Plugin
-     * @param {string} repoURL Git repo url
-     * @param {string} name Directory name, also known as plugin unique name
-     */
-    downloadPlugin(repoURL, name) {
-        if (fs.existsSync(this.pluginsDir + name)) {
-            log.info("plugin", "Plugin folder already exists? Removing...");
-            fs.rmSync(this.pluginsDir + name, {
-                recursive: true
-            });
-        }
-        log.info("plugin", "Installing plugin: " + name + " " + repoURL);
-        let result = Git.clone(repoURL, this.pluginsDir, name);
-        log.info("plugin", "Install result: " + result);
-    }
-
-    /**
-     * Remove a plugin
-     * @param {string} name
-     */
-    async removePlugin(name) {
-        log.info("plugin", "Removing plugin: " + name);
-        for (let plugin of this.pluginList) {
-            if (plugin.info.name === name) {
-                await plugin.unload();
-
-                // Delete the plugin directory
-                fs.rmSync(this.pluginsDir + name, {
-                    recursive: true
-                });
-
-                this.pluginList.splice(this.pluginList.indexOf(plugin), 1);
-                return;
-            }
-        }
-        log.warn("plugin", "Plugin not found: " + name);
-        throw new Error("Plugin not found: " + name);
-    }
-
-    /**
-     * TODO: Update a plugin
-     * Only available for plugins which were downloaded from the official list
-     * @param pluginID
-     */
-    updatePlugin(pluginID) {
-
-    }
-
-    /**
-     * Get the plugin list from server + local installed plugin list
-     * Item will be merged if the `name` is the same.
-     * @returns {Promise<[]>}
-     */
-    async fetchPluginList() {
-        let remotePluginList;
-        try {
-            const res = await axios.get("https://uptime.kuma.pet/c/plugins.json");
-            remotePluginList = res.data.pluginList;
-        } catch (e) {
-            log.error("plugin", "Failed to fetch plugin list: " + e.message);
-            remotePluginList = [];
-        }
-
-        for (let plugin of this.pluginList) {
-            let find = false;
-            // Try to merge
-            for (let remotePlugin of remotePluginList) {
-                if (remotePlugin.name === plugin.info.name) {
-                    find = true;
-                    remotePlugin.installed = true;
-                    remotePlugin.name = plugin.info.name;
-                    remotePlugin.fullName = plugin.info.fullName;
-                    remotePlugin.description = plugin.info.description;
-                    remotePlugin.version = plugin.info.version;
-                    break;
-                }
-            }
-
-            // Local plugin
-            if (!find) {
-                plugin.info.local = true;
-                remotePluginList.push(plugin.info);
-            }
-        }
-
-        // Sort Installed first, then sort by name
-        return remotePluginList.sort((a, b) => {
-            if (a.installed === b.installed) {
-                if (a.fullName < b.fullName) {
-                    return -1;
-                }
-                if (a.fullName > b.fullName) {
-                    return 1;
-                }
-                return 0;
-            } else if (a.installed) {
-                return -1;
-            } else {
-                return 1;
-            }
-        });
-    }
-}
-
-class PluginWrapper {
-
-    server = undefined;
-    pluginDir = undefined;
-
-    /**
-     * Must be an `new-able` class.
-     * @type {function}
-     */
-    pluginClass = undefined;
-
-    /**
-     *
-     * @type {Plugin}
-     */
-    object = undefined;
-    info = {};
-
-    /**
-     *
-     * @param {UptimeKumaServer} server
-     * @param {string} pluginDir
-     */
-    constructor(server, pluginDir) {
-        this.server = server;
-        this.pluginDir = pluginDir;
-    }
-
-    async load() {
-        let indexFile = this.pluginDir + "/index.js";
-        let packageJSON = this.pluginDir + "/package.json";
-
-        log.info("plugin", "Installing dependencies");
-
-        if (fs.existsSync(indexFile)) {
-            // Install dependencies
-            let result = childProcess.spawnSync("npm", [ "install" ], {
-                cwd: this.pluginDir,
-                env: {
-                    ...process.env,
-                    PLAYWRIGHT_BROWSERS_PATH: "../../browsers",    // Special handling for read-browser-monitor
-                }
-            });
-
-            if (result.stdout) {
-                log.info("plugin", "Install dependencies result: " + result.stdout.toString("utf-8"));
-            } else {
-                log.warn("plugin", "Install dependencies result: no output");
-            }
-
-            this.pluginClass = require(path.join(process.cwd(), indexFile));
-
-            let pluginClassType = typeof this.pluginClass;
-
-            if (pluginClassType === "function") {
-                this.object = new this.pluginClass(this.server);
-                await this.object.load();
-            } else {
-                throw new Error("Invalid plugin, it does not export a class");
-            }
-
-            if (fs.existsSync(packageJSON)) {
-                this.info = require(path.join(process.cwd(), packageJSON));
-            } else {
-                this.info.fullName = this.pluginDir;
-                this.info.name = "[unknown]";
-                this.info.version = "[unknown-version]";
-            }
-
-            this.info.installed = true;
-            log.info("plugin", `${this.info.fullName} v${this.info.version} loaded`);
-        }
-    }
-
-    async unload() {
-        await this.object.unload();
-    }
-}
-
-module.exports = {
-    PluginsManager,
-    PluginWrapper
-};
--- a/server/routers/api-router.js
+++ b/server/routers/api-router.js
@@ -442,7 +442,7 @@ router.get("/api/badge/:id/cert-exp", cache("5 minutes"), async (request, respon
                if (!tlsInfo.valid) {
                    // return a "Bad Cert" badge in naColor (grey), when cert is not valid
                    badgeValues.message = "Bad Cert";
-                    badgeValues.color = badgeConstants.downColor;
+                    badgeValues.color = downColor;
                } else {
                    const daysRemaining = parseInt(overrideValue ?? tlsInfo.certInfo.daysRemaining);

--- a/server/routers/status-page-router.js
+++ b/server/routers/status-page-router.js
@@ -5,6 +5,8 @@ const StatusPage = require("../model/status_page");
 const { allowDevAllOrigin, sendHttpError } = require("../util-server");
 const { R } = require("redbean-node");
 const Monitor = require("../model/monitor");
+const { badgeConstants } = require("../config");
+const { makeBadge } = require("badge-maker");

 let router = express.Router();

@@ -139,4 +141,100 @@ router.get("/api/status-page/:slug/manifest.json", cache("1440 minutes"), async
    }
 });

+// overall status-page status badge
+router.get("/api/status-page/:slug/badge", cache("5 minutes"), async (request, response) => {
+    allowDevAllOrigin(response);
+    const slug = request.params.slug;
+    const statusPageID = await StatusPage.slugToID(slug);
+    const {
+        label,
+        upColor = badgeConstants.defaultUpColor,
+        downColor = badgeConstants.defaultDownColor,
+        partialColor = "#F6BE00",
+        maintenanceColor = "#808080",
+        style = badgeConstants.defaultStyle
+    } = request.query;
+
+    try {
+        let monitorIDList = await R.getCol(`
+            SELECT monitor_group.monitor_id FROM monitor_group, \`group\`
+            WHERE monitor_group.group_id = \`group\`.id
+            AND public = 1
+            AND \`group\`.status_page_id = ?
+        `, [
+            statusPageID
+        ]);
+
+        let hasUp = false;
+        let hasDown = false;
+        let hasMaintenance = false;
+
+        for (let monitorID of monitorIDList) {
+            // retrieve the latest heartbeat
+            let beat = await R.getAll(`
+                    SELECT * FROM heartbeat
+                    WHERE monitor_id = ?
+                    ORDER BY time DESC
+                    LIMIT 1
+            `, [
+                monitorID,
+            ]);
+
+            // to be sure, when corresponding monitor not found
+            if (beat.length === 0) {
+                continue;
+            }
+            // handle status of beat
+            if (beat[0].status === 3) {
+                hasMaintenance = true;
+            } else if (beat[0].status === 2) {
+                // ignored
+            } else if (beat[0].status === 1) {
+                hasUp = true;
+            } else {
+                hasDown = true;
+            }
+
+        }
+
+        const badgeValues = { style };
+
+        if (!hasUp && !hasDown && !hasMaintenance) {
+            // return a "N/A" badge in naColor (grey), if monitor is not public / not available / non exsitant
+
+            badgeValues.message = "N/A";
+            badgeValues.color = badgeConstants.naColor;
+
+        } else {
+            if (hasMaintenance) {
+                badgeValues.label = label ? label : "";
+                badgeValues.color = maintenanceColor;
+                badgeValues.message = "Maintenance";
+            } else if (hasUp && !hasDown) {
+                badgeValues.label = label ? label : "";
+                badgeValues.color = upColor;
+                badgeValues.message = "Up";
+            } else if (hasUp && hasDown) {
+                badgeValues.label = label ? label : "";
+                badgeValues.color = partialColor;
+                badgeValues.message = "Degraded";
+            } else {
+                badgeValues.label = label ? label : "";
+                badgeValues.color = downColor;
+                badgeValues.message = "Down";
+            }
+
+        }
+
+        // build the svg based on given values
+        const svg = makeBadge(badgeValues);
+
+        response.type("image/svg+xml");
+        response.send(svg);
+
+    } catch (error) {
+        sendHttpError(response, error.message);
+    }
+});
+
 module.exports = router;
--- a/server/server.js
+++ b/server/server.js
@@ -147,8 +147,8 @@ const { apiKeySocketHandler } = require("./socket-handlers/api-key-socket-handle
 const { generalSocketHandler } = require("./socket-handlers/general-socket-handler");
 const { Settings } = require("./settings");
 const { CacheableDnsHttpAgent } = require("./cacheable-dns-http-agent");
-const { pluginsHandler } = require("./socket-handlers/plugins-handler");
 const apicache = require("./modules/apicache");
+const { resetChrome } = require("./monitor-types/real-browser-monitor-type");

 app.use(express.json());

@@ -161,12 +161,6 @@ app.use(function (req, res, next) {
    next();
 });

-/**
- * Use for decode the auth object
- * @type {null}
- */
-let jwtSecret = null;
-
 /**
 * Show Setup Page
 * @type {boolean}
@@ -177,7 +171,6 @@ let needSetup = false;
    Database.init(args);
    await initDatabase(testMode);
    await server.initAfterDatabaseReady();
-    server.loadPlugins();
    server.entryPage = await Settings.get("entryPage");
    await StatusPage.loadDomainMappingList();

@@ -215,6 +208,7 @@ let needSetup = false;
    });

    if (isDev) {
+        app.use(express.urlencoded({ extended: true }));
        app.post("/test-webhook", async (request, response) => {
            log.debug("test", request.headers);
            log.debug("test", request.body);
@@ -269,7 +263,7 @@ let needSetup = false;
    log.info("server", "Adding socket handler");
    io.on("connection", async (socket) => {

-        sendInfo(socket);
+        sendInfo(socket, true);

        if (needSetup) {
            log.info("server", "Redirect to setup page");
@@ -286,7 +280,7 @@ let needSetup = false;
            log.info("auth", `Login by token. IP=${clientIP}`);

            try {
-                let decoded = jwt.verify(token, jwtSecret);
+                let decoded = jwt.verify(token, server.jwtSecret);

                log.info("auth", "Username from JWT: " + decoded.username);

@@ -357,7 +351,7 @@ let needSetup = false;
                        ok: true,
                        token: jwt.sign({
                            username: data.username,
-                        }, jwtSecret),
+                        }, server.jwtSecret),
                    });
                }

@@ -387,7 +381,7 @@ let needSetup = false;
                            ok: true,
                            token: jwt.sign({
                                username: data.username,
-                            }, jwtSecret),
+                            }, server.jwtSecret),
                        });
                    } else {

@@ -676,6 +670,7 @@ let needSetup = false;
        // Edit a monitor
        socket.on("editMonitor", async (monitor, callback) => {
            try {
+                let removeGroupChildren = false;
                checkLogin(socket);

                let bean = await R.findOne("monitor", " id = ? ", [ monitor.id ]);
@@ -684,7 +679,7 @@ let needSetup = false;
                    throw new Error("Permission denied.");
                }

-                // Check if Parent is Decendant (would cause endless loop)
+                // Check if Parent is Descendant (would cause endless loop)
                if (monitor.parent !== null) {
                    const childIDs = await Monitor.getAllChildrenIDs(monitor.id);
                    if (childIDs.includes(monitor.parent)) {
@@ -692,6 +687,11 @@ let needSetup = false;
                    }
                }

+                // Remove children if monitor type has changed (from group to non-group)
+                if (bean.type === "group" && monitor.type !== bean.type) {
+                    removeGroupChildren = true;
+                }
+
                bean.name = monitor.name;
                bean.description = monitor.description;
                bean.parent = monitor.parent;
@@ -713,6 +713,7 @@ let needSetup = false;
                bean.maxretries = monitor.maxretries;
                bean.port = parseInt(monitor.port);
                bean.keyword = monitor.keyword;
+                bean.invertKeyword = monitor.invertKeyword;
                bean.ignoreTls = monitor.ignoreTls;
                bean.expiryNotification = monitor.expiryNotification;
                bean.upsideDown = monitor.upsideDown;
@@ -747,11 +748,17 @@ let needSetup = false;
                bean.radiusCallingStationId = monitor.radiusCallingStationId;
                bean.radiusSecret = monitor.radiusSecret;
                bean.httpBodyEncoding = monitor.httpBodyEncoding;
+                bean.expectedValue = monitor.expectedValue;
+                bean.jsonPath = monitor.jsonPath;

                bean.validate();

                await R.store(bean);

+                if (removeGroupChildren) {
+                    await Monitor.unlinkAllChildren(monitor.id);
+                }
+
                await updateMonitorNotification(bean.id, monitor.notificationIDList);

                if (bean.isActive()) {
@@ -897,6 +904,8 @@ let needSetup = false;
                    delete server.monitorList[monitorID];
                }

+                const startTime = Date.now();
+
                await R.exec("DELETE FROM monitor WHERE id = ? AND user_id = ? ", [
                    monitorID,
                    socket.userID,
@@ -905,6 +914,10 @@ let needSetup = false;
                // Fix #2880
                apicache.clear();

+                const endTime = Date.now();
+
+                log.info("DB", `Delete Monitor completed in : ${endTime - startTime} ms`);
+
                callback({
                    ok: true,
                    msg: "Deleted Successfully.",
@@ -1148,6 +1161,8 @@ let needSetup = false;
                    await doubleCheckPassword(socket, currentPassword);
                }

+                const previousChromeExecutable = await Settings.get("chromeExecutable");
+
                await setSettings("general", data);
                server.entryPage = data.entryPage;

@@ -1158,6 +1173,12 @@ let needSetup = false;
                    await server.setTimezone(data.serverTimezone);
                }

+                // If Chrome Executable is changed, need to reset the browser
+                if (previousChromeExecutable !== data.chromeExecutable) {
+                    log.info("settings", "Chrome executable is changed. Resetting Chrome...");
+                    await resetChrome();
+                }
+
                callback({
                    ok: true,
                    msg: "Saved"
@@ -1359,13 +1380,14 @@ let needSetup = false;
                                maxretries: monitorListData[i].maxretries,
                                port: monitorListData[i].port,
                                keyword: monitorListData[i].keyword,
+                                invertKeyword: monitorListData[i].invertKeyword,
                                ignoreTls: monitorListData[i].ignoreTls,
                                upsideDown: monitorListData[i].upsideDown,
                                maxredirects: monitorListData[i].maxredirects,
                                accepted_statuscodes: monitorListData[i].accepted_statuscodes,
                                dns_resolve_type: monitorListData[i].dns_resolve_type,
                                dns_resolve_server: monitorListData[i].dns_resolve_server,
-                                notificationIDList: {},
+                                notificationIDList: monitorListData[i].notificationIDList,
                                proxy_id: monitorListData[i].proxy_id || null,
                            };

@@ -1527,7 +1549,6 @@ let needSetup = false;
        maintenanceSocketHandler(socket);
        apiKeySocketHandler(socket);
        generalSocketHandler(socket, server);
-        pluginsHandler(socket, server);

        log.debug("server", "added all socket handlers");

@@ -1630,6 +1651,7 @@ async function afterLogin(socket, user) {
    socket.join(user.id);

    let monitorList = await server.sendMonitorList(socket);
+    sendInfo(socket);
    server.sendMaintenanceList(socket);
    sendNotificationList(socket);
    sendProxyList(socket);
@@ -1697,7 +1719,7 @@ async function initDatabase(testMode = false) {
        needSetup = true;
    }

-    jwtSecret = jwtSecretBean.value;
+    server.jwtSecret = jwtSecretBean.value;
 }

 /**
--- a/server/socket-handlers/general-socket-handler.js
+++ b/server/socket-handlers/general-socket-handler.js
@@ -3,6 +3,7 @@ const { Settings } = require("../settings");
 const { sendInfo } = require("../client");
 const { checkLogin } = require("../util-server");
 const GameResolver = require("gamedig/lib/GameResolver");
+const { testChrome } = require("../monitor-types/real-browser-monitor-type");

 let gameResolver = new GameResolver();
 let gameList = null;
@@ -47,4 +48,18 @@ module.exports.generalSocketHandler = (socket, server) => {
        });
    });

+    socket.on("testChrome", (executable, callback) => {
+        // Just noticed that await call could block the whole socket.io server!!! Use pure promise instead.
+        testChrome(executable).then((version) => {
+            callback({
+                ok: true,
+                msg: "Found Chromium/Chrome. Version: " + version,
+            });
+        }).catch((e) => {
+            callback({
+                ok: false,
+                msg: e.message,
+            });
+        });
+    });
 };
--- a/server/socket-handlers/plugins-handler.js
+++ b/server/socket-handlers/plugins-handler.js
@@ -1,69 +0,0 @@
-const { checkLogin } = require("../util-server");
-const { PluginsManager } = require("../plugins-manager");
-const { log } = require("../../src/util.js");
-
-/**
- * Handlers for plugins
- * @param {Socket} socket Socket.io instance
- * @param {UptimeKumaServer} server
- */
-module.exports.pluginsHandler = (socket, server) => {
-
-    const pluginManager = server.getPluginManager();
-
-    // Get Plugin List
-    socket.on("getPluginList", async (callback) => {
-        try {
-            checkLogin(socket);
-
-            log.debug("plugin", "PluginManager.disable: " + PluginsManager.disable);
-
-            if (PluginsManager.disable) {
-                throw new Error("Plugin Disabled: In order to enable plugin feature, you need to use the default data directory: ./data/");
-            }
-
-            let pluginList = await pluginManager.fetchPluginList();
-            callback({
-                ok: true,
-                pluginList,
-            });
-        } catch (error) {
-            log.warn("plugin", "Error: " + error.message);
-            callback({
-                ok: false,
-                msg: error.message,
-            });
-        }
-    });
-
-    socket.on("installPlugin", async (repoURL, name, callback) => {
-        try {
-            checkLogin(socket);
-            pluginManager.downloadPlugin(repoURL, name);
-            await pluginManager.loadPlugin(name);
-            callback({
-                ok: true,
-            });
-        } catch (error) {
-            callback({
-                ok: false,
-                msg: error.message,
-            });
-        }
-    });
-
-    socket.on("uninstallPlugin", async (name, callback) => {
-        try {
-            checkLogin(socket);
-            await pluginManager.removePlugin(name);
-            callback({
-                ok: true,
-            });
-        } catch (error) {
-            callback({
-                ok: false,
-                msg: error.message,
-            });
-        }
-    });
-};
--- a/server/uptime-kuma-server.js
+++ b/server/uptime-kuma-server.js
@@ -10,8 +10,7 @@ const util = require("util");
 const { CacheableDnsHttpAgent } = require("./cacheable-dns-http-agent");
 const { Settings } = require("./settings");
 const dayjs = require("dayjs");
-const { PluginsManager } = require("./plugins-manager");
-// DO NOT IMPORT HERE IF THE MODULES USED `UptimeKumaServer.getInstance()`
+// DO NOT IMPORT HERE IF THE MODULES USED `UptimeKumaServer.getInstance()`, put at the bottom of this file instead.

 /**
 * `module.exports` (alias: `server`) should be inside this class, in order to avoid circular dependency issue.
@@ -47,12 +46,6 @@ class UptimeKumaServer {
     */
    indexHTML = "";

-    /**
-     * Plugins Manager
-     * @type {PluginsManager}
-     */
-    pluginsManager = null;
-
    /**
     *
     * @type {{}}
@@ -61,6 +54,12 @@ class UptimeKumaServer {

    };

+    /**
+     * Use for decode the auth object
+     * @type {null}
+     */
+    jwtSecret = null;
+
    static getInstance(args) {
        if (UptimeKumaServer.instance == null) {
            UptimeKumaServer.instance = new UptimeKumaServer(args);
@@ -98,11 +97,17 @@ class UptimeKumaServer {
            }
        }

+        // Set Monitor Types
+        UptimeKumaServer.monitorTypeList["real-browser"] = new RealBrowserMonitorType();
+
        this.io = new Server(this.httpServer);
    }

    /** Initialise app after the database has been set up */
    async initAfterDatabaseReady() {
+        // Static
+        this.app.use("/screenshots", express.static(Database.screenshotDir));
+
        await CacheableDnsHttpAgent.update();

        process.env.TZ = await this.getTimezone();
@@ -244,9 +249,9 @@ class UptimeKumaServer {

            return (typeof forwardedFor === "string" ? forwardedFor.split(",")[0].trim() : null)
                || socket.client.conn.request.headers["x-real-ip"]
-                || clientIP.replace(/^.*:/, "");
+                || clientIP.replace(/^::ffff:/, "");
        } else {
-            return clientIP.replace(/^.*:/, "");
+            return clientIP.replace(/^::ffff:/, "");
        }
    }

@@ -257,13 +262,43 @@ class UptimeKumaServer {
     * @returns {Promise<string>}
     */
    async getTimezone() {
+        // From process.env.TZ
+        try {
+            if (process.env.TZ) {
+                this.checkTimezone(process.env.TZ);
+                return process.env.TZ;
+            }
+        } catch (e) {
+            log.warn("timezone", e.message + " in process.env.TZ");
+        }
+
        let timezone = await Settings.get("serverTimezone");
-        if (timezone) {
-            return timezone;
-        } else if (process.env.TZ) {
-            return process.env.TZ;
-        } else {
-            return dayjs.tz.guess();
+
+        // From Settings
+        try {
+            log.debug("timezone", "Using timezone from settings: " + timezone);
+            if (timezone) {
+                this.checkTimezone(timezone);
+                return timezone;
+            }
+        } catch (e) {
+            log.warn("timezone", e.message + " in settings");
+        }
+
+        // Guess
+        try {
+            let guess = dayjs.tz.guess();
+            log.debug("timezone", "Guessing timezone: " + guess);
+            if (guess) {
+                this.checkTimezone(guess);
+                return guess;
+            } else {
+                return "UTC";
+            }
+        } catch (e) {
+            // Guess failed, fall back to UTC
+            log.debug("timezone", "Guessed an invalid timezone. Use UTC as fallback");
+            return "UTC";
        }
    }

@@ -275,11 +310,24 @@ class UptimeKumaServer {
        return dayjs().format("Z");
    }

+    /**
+     * Throw an error if the timezone is invalid
+     * @param timezone
+     */
+    checkTimezone(timezone) {
+        try {
+            dayjs.utc("2013-11-18 11:55").tz(timezone).format();
+        } catch (e) {
+            throw new Error("Invalid timezone:" + timezone);
+        }
+    }
+
    /**
     * Set the current server timezone and environment variables
     * @param {string} timezone
     */
    async setTimezone(timezone) {
+        this.checkTimezone(timezone);
        await Settings.set("serverTimezone", timezone, "general");
        process.env.TZ = timezone;
        dayjs.tz.setDefault(timezone);
@@ -289,51 +337,11 @@ class UptimeKumaServer {
    async stop() {

    }
-
-    loadPlugins() {
-        this.pluginsManager = new PluginsManager(this);
-    }
-
-    /**
-     *
-     * @returns {PluginsManager}
-     */
-    getPluginManager() {
-        return this.pluginsManager;
-    }
-
-    /**
-     *
-     * @param {MonitorType} monitorType
-     */
-    addMonitorType(monitorType) {
-        if (monitorType instanceof MonitorType && monitorType.name) {
-            if (monitorType.name in UptimeKumaServer.monitorTypeList) {
-                log.error("", "Conflict Monitor Type name");
-            }
-            UptimeKumaServer.monitorTypeList[monitorType.name] = monitorType;
-        } else {
-            log.error("", "Invalid Monitor Type: " + monitorType.name);
-        }
-    }
-
-    /**
-     *
-     * @param {MonitorType} monitorType
-     */
-    removeMonitorType(monitorType) {
-        if (UptimeKumaServer.monitorTypeList[monitorType.name] === monitorType) {
-            delete UptimeKumaServer.monitorTypeList[monitorType.name];
-        } else {
-            log.error("", "Remove MonitorType failed: " + monitorType.name);
-        }
-    }
-
 }

 module.exports = {
    UptimeKumaServer
 };

-// Must be at the end
-const { MonitorType } = require("./monitor-types/monitor-type");
+// Must be at the end to avoid circular dependencies
+const { RealBrowserMonitorType } = require("./monitor-types/real-browser-monitor-type");
--- a/server/util-server.js
+++ b/server/util-server.js
@@ -378,6 +378,7 @@ exports.mongodbPing = async function (connectionString) {
 * @param {string} callingStationId ID of calling station
 * @param {string} secret Secret to use
 * @param {number} [port=1812] Port to contact radius server on
+ * @param {number} [timeout=2500] Timeout for connection to use
 * @returns {Promise<any>}
 */
 exports.radius = function (
@@ -388,10 +389,12 @@ exports.radius = function (
    callingStationId,
    secret,
    port = 1812,
+    timeout = 2500,
 ) {
    const client = new radiusClient({
        host: hostname,
        hostPort: port,
+        timeout: timeout,
        dictionaries: [ file ],
    });

@@ -413,12 +416,18 @@ exports.radius = function (
 exports.redisPingAsync = function (dsn) {
    return new Promise((resolve, reject) => {
        const client = redis.createClient({
-            url: dsn,
+            url: dsn
        });
        client.on("error", (err) => {
+            if (client.isOpen) {
+                client.disconnect();
+            }
            reject(err);
        });
        client.connect().then(() => {
+            if (!client.isOpen) {
+                client.emit("error", new Error("connection isn't open"));
+            }
            client.ping().then((res, err) => {
                if (client.isOpen) {
                    client.disconnect();
@@ -428,7 +437,7 @@ exports.redisPingAsync = function (dsn) {
                } else {
                    resolve(res);
                }
-            });
+            }).catch(error => reject(error));
        });
    });
 };