Update Safe Exam Browser Patch to 3.10.0.826

SafeExamBrowser.Runtime/Responsibilities/ServiceResponsibility.cs

@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2025 ETH Zürich, IT Services
+ * 
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+using System;
+using SafeExamBrowser.Communication.Contracts.Proxies;
+using SafeExamBrowser.I18n.Contracts;
+using SafeExamBrowser.Logging.Contracts;
+using SafeExamBrowser.Settings.Service;
+using SafeExamBrowser.UserInterface.Contracts.MessageBox;
+using SafeExamBrowser.UserInterface.Contracts.Windows;
+
+namespace SafeExamBrowser.Runtime.Responsibilities
+{
+	internal class ServiceResponsibility : RuntimeResponsibility
+	{
+		private readonly IMessageBox messageBox;
+		private readonly IRuntimeWindow runtimeWindow;
+		private readonly IServiceProxy serviceProxy;
+		private readonly Action shutdown;
+
+		internal ServiceResponsibility(
+			ILogger logger,
+			IMessageBox messageBox,
+			RuntimeContext runtimeContext,
+			IRuntimeWindow runtimeWindow,
+			IServiceProxy serviceProxy,
+			Action shutdown) : base(logger, runtimeContext)
+		{
+			this.messageBox = messageBox;
+			this.runtimeWindow = runtimeWindow;
+			this.serviceProxy = serviceProxy;
+			this.shutdown = shutdown;
+		}
+
+		public override void Assume(RuntimeTask task)
+		{
+			switch (task)
+			{
+				case RuntimeTask.DeregisterSessionEvents:
+					DeregisterEvents();
+					break;
+				case RuntimeTask.RegisterSessionEvents:
+					RegisterEvents();
+					break;
+			}
+		}
+
+		private void DeregisterEvents()
+		{
+			serviceProxy.ConnectionLost -= ServiceProxy_ConnectionLost;
+		}
+
+		private void RegisterEvents()
+		{
+			serviceProxy.ConnectionLost += ServiceProxy_ConnectionLost;
+		}
+
+		private void ServiceProxy_ConnectionLost()
+		{
+			if (SessionIsRunning && Session.Settings.Service.Policy == ServicePolicy.Mandatory)
+			{
+				Logger.Error("Lost connection to the service component!");
+
+				Context.Responsibilities.Delegate(RuntimeTask.StopSession);
+
+				messageBox.Show(TextKey.MessageBox_ApplicationError, TextKey.MessageBox_ApplicationErrorTitle, icon: MessageBoxIcon.Error, parent: runtimeWindow);
+				shutdown.Invoke();
+			}
+			else
+			{
+				Logger.Warn("Lost connection to the service component!");
+			}
+		}
+	}
+}