Restore SEBPatch

SafeExamBrowser.WindowsApi/Kernel32.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.Runtime.InteropServices;
+using SafeExamBrowser.WindowsApi.Constants;
+using SafeExamBrowser.WindowsApi.Types;
+
+namespace SafeExamBrowser.WindowsApi
+{
+	/// <summary>
+	/// Provides access to the native Windows API exposed by <c>kernel32.dll</c>.
+	/// </summary>
+	internal class Kernel32
+	{
+		[DllImport("kernel32.dll", SetLastError = true)]
+		internal static extern bool CloseHandle(IntPtr hObject);
+
+		[DllImport("kernel32.dll", SetLastError = true)]
+		internal static extern bool CreateProcess(
+			string lpApplicationName,
+			string lpCommandLine,
+			IntPtr lpProcessAttributes,
+			IntPtr lpThreadAttributes,
+			bool bInheritHandles,
+			int dwCreationFlags,
+			IntPtr lpEnvironment,
+			string lpCurrentDirectory,
+			ref STARTUPINFO lpStartupInfo,
+			ref PROCESS_INFORMATION lpProcessInformation);
+
+		[DllImport("kernel32.dll", SetLastError = true)]
+		internal static extern int GetCurrentThreadId();
+
+		[DllImport("kernel32.dll", SetLastError = true)]
+		internal static extern IntPtr GetModuleHandle(string lpModuleName);
+
+		[DllImport("kernel32.dll", SetLastError = true)]
+		internal static extern IntPtr OpenThread(ThreadAccess dwDesiredAccess, bool bInheritHandle, uint dwThreadId);
+
+		[DllImport("kernel32.dll", SetLastError = true)]
+		internal static extern int ResumeThread(IntPtr hThread);
+
+		[DllImport("kernel32.dll", SetLastError = true)]
+		internal static extern EXECUTION_STATE SetThreadExecutionState(EXECUTION_STATE esFlags);
+
+		[DllImport("kernel32.dll", SetLastError = true)]
+		internal static extern int SuspendThread(IntPtr hThread);
+	}
+}