Restore SEBPatch

SafeExamBrowser.Lockdown/SystemConfigurationUpdate.cs

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+/*
+ * 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 System.Diagnostics;
+using System.Linq;
+using System.Threading.Tasks;
+using SafeExamBrowser.Lockdown.Contracts;
+using SafeExamBrowser.Logging.Contracts;
+
+namespace SafeExamBrowser.Lockdown
+{
+	public class SystemConfigurationUpdate : ISystemConfigurationUpdate
+	{
+		private ILogger logger;
+
+		public SystemConfigurationUpdate(ILogger logger)
+		{
+			this.logger = logger;
+		}
+
+		public void Execute()
+		{
+			try
+			{
+				logger.Info("Starting system configuration update...");
+
+				var process = Process.Start(new ProcessStartInfo("cmd.exe", "/c \"gpupdate /force\"")
+				{
+					CreateNoWindow = true,
+					RedirectStandardOutput = true,
+					UseShellExecute = false
+				});
+
+				logger.Info("Waiting for update to complete...");
+				process.WaitForExit();
+
+				var output = process.StandardOutput.ReadToEnd();
+				var lines = output.Split(new [] { Environment.NewLine, "\r", "\n" }, StringSplitOptions.RemoveEmptyEntries);
+
+				logger.Info($"Update has completed: {String.Join(" ", lines.Skip(1))}");
+			}
+			catch (Exception e)
+			{
+				logger.Error("Failed to update system configuration!", e);
+			}
+		}
+
+		public void ExecuteAsync()
+		{
+			Task.Run(new Action(Execute));
+		}
+	}
+}