Restore SEBPatch

SafeExamBrowser.Client/Operations/RuntimeConnectionOperation.cs

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2024 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.Core.Contracts.OperationModel;
+using SafeExamBrowser.Core.Contracts.OperationModel.Events;
+using SafeExamBrowser.I18n.Contracts;
+using SafeExamBrowser.Logging.Contracts;
+
+namespace SafeExamBrowser.Client.Operations
+{
+	internal class RuntimeConnectionOperation : ClientOperation
+	{
+		private ILogger logger;
+		private IRuntimeProxy runtime;
+		private Guid token;
+
+		public override event ActionRequiredEventHandler ActionRequired { add { } remove { } }
+		public override event StatusChangedEventHandler StatusChanged;
+
+		public RuntimeConnectionOperation(ClientContext context, ILogger logger, IRuntimeProxy runtime, Guid token) : base(context)
+		{
+			this.logger = logger;
+			this.runtime = runtime;
+			this.token = token;
+		}
+
+		public override OperationResult Perform()
+		{
+			logger.Info("Initializing runtime connection...");
+			StatusChanged?.Invoke(TextKey.OperationStatus_InitializeRuntimeConnection);
+
+			var connected = runtime.Connect(token);
+
+			if (connected)
+			{
+				logger.Info("Successfully connected to the runtime.");
+			}
+			else
+			{
+				logger.Error("Failed to connect to the runtime. Aborting startup...");
+			}
+
+			return connected ? OperationResult.Success : OperationResult.Failed;
+		}
+
+		public override OperationResult Revert()
+		{
+			logger.Info("Closing runtime connection...");
+			StatusChanged?.Invoke(TextKey.OperationStatus_CloseRuntimeConnection);
+
+			if (runtime.IsConnected)
+			{
+				var success = runtime.Disconnect();
+
+				if (success)
+				{
+					logger.Info("Successfully disconnected from the runtime.");
+				}
+				else
+				{
+					logger.Error("Failed to disconnect from the runtime!");
+				}
+
+				return success ? OperationResult.Success : OperationResult.Failed;
+			}
+
+			return OperationResult.Success;
+		}
+	}
+}