Add an ipc to reset the Tooloop Control Centre watchdog.

main.js

@@ -1,4 +1,4 @@
-const { app, BrowserWindow, nativeTheme, Menu, MenuItem } = require('electron/main');
+const { app, BrowserWindow, nativeTheme, Menu, MenuItem, ipcMain } = require('electron/main');
 const path = require('node:path');
 const { fileURLToPath } = require('node:url');
 const fs = require('fs');
@@ -7,6 +7,7 @@ const { default: isReachable } = require('is-reachable');
 const { setTimeout: delay } = require('node:timers/promises');
 const config = require('./js/config.js');
 const { Config } = require('./js/config.js');
+const { isAuthorizedWatchdogEvent: isWatchdogEventAuthorized, registerWatchdogHandler } = require('./js/watchdog.js');
 
 
 //------------------------------------------------------------------------------
@@ -163,30 +164,53 @@ function createMenu() {
  * @returns `true` if the url is allowed, `false` otherwise
  */
 function validateDomain(event) {
+    if (isUrlAllowed(event.url)) return true;
+    event.preventDefault();
+    log.info("Navigation to " + event.url + " prevented");
+    return false;
+}
+
+function isUrlAllowed(urlString) {
     if (config == undefined || config.data == undefined) return true;
 
-    let url = new URL(event.url);
+    let url;
+    try {
+        url = new URL(urlString);
+    } catch {
+        return false;
+    }
 
-    // allow local urls
     if (['file:', 'file'].includes(url.protocol)) return true;
 
     if ('whitelist' in config.data &&
         Array.isArray(config.data.whitelist) &&
         config.data.whitelist.length > 0 &&
         !config.data.whitelist.includes(url.hostname)) {
-        event.preventDefault();
-        log.info("Navigation to " + event.url + " prevented");
         return false;
     }
 
     return true;
 }
 
+function isAuthorizedWatchdogEvent(event) {
+    return isWatchdogEventAuthorized(event, win, isUrlAllowed);
+}
+
+function logWatchdogError(error) {
+    log.warn('Watchdog reset failed: ' + (error?.message || error));
+}
+
+function registerWatchdogBridge() {
+    registerWatchdogHandler(ipcMain, {
+        isAuthorized: isAuthorizedWatchdogEvent,
+        onError: logWatchdogError
+    });
+}
 
 /**
  * Tests if the host of the url is reachable.
  * Access is tried in a 1 second interval and the url is loaded if successfull.
- * @param {string} testurl 
+ * @param {string} testurl
  */
 async function loadUrlAsync(testurl) {
     const request = ++navigationRequest;
@@ -299,6 +323,7 @@ app.whenReady().then(() => {
     log.info('Starting Tooloop Kiosk Browser...');
     log.info('Logging to ' + log.transports.file.resolvePathFn());
 
+    registerWatchdogBridge();
     createMenu();
     createMainWindow();
 });