using System; using System.Collections; using System.Runtime.InteropServices; using System.IO; using System.Text; using Microsoft.Win32.SafeHandles; namespace Ipa.Injector.Windows { // https://stackoverflow.com/a/48864902/3117125 static class WinConsole { static public void Initialize(bool alwaysCreateNewConsole = true) { bool consoleAttached = true; if (alwaysCreateNewConsole || (AttachConsole(ATTACH_PARRENT) == 0 && Marshal.GetLastWin32Error() != ERROR_ACCESS_DENIED)) { consoleAttached = AllocConsole() != 0; } if (consoleAttached) { InitializeOutStream(); InitializeInStream(); } } private static void InitializeOutStream() { var fs = CreateFileStream("CONOUT$", GENERIC_WRITE, FILE_SHARE_WRITE, FileAccess.Write); if (fs != null) { var writer = new StreamWriter(fs) { AutoFlush = true }; Console.SetOut(writer); Console.SetError(writer); } } private static void InitializeInStream() { var fs = CreateFileStream("CONIN$", GENERIC_READ, FILE_SHARE_READ, FileAccess.Read); if (fs != null) { Console.SetIn(new StreamReader(fs)); } } private static FileStream CreateFileStream(string name, uint win32DesiredAccess, uint win32ShareMode, FileAccess dotNetFileAccess) { var file = new SafeFileHandle(CreateFileW(name, win32DesiredAccess, win32ShareMode, IntPtr.Zero, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, IntPtr.Zero), true); if (!file.IsInvalid) { var fs = new FileStream(file, dotNetFileAccess); return fs; } return null; } #region Win API Functions and Constants [DllImport("kernel32.dll", EntryPoint = "AllocConsole", SetLastError = true, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)] private static extern int AllocConsole(); [DllImport("kernel32.dll", EntryPoint = "AttachConsole", SetLastError = true, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)] private static extern UInt32 AttachConsole(UInt32 dwProcessId); [DllImport("kernel32.dll", EntryPoint = "CreateFileW", SetLastError = true, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)] private static extern IntPtr CreateFileW( string lpFileName, UInt32 dwDesiredAccess, UInt32 dwShareMode, IntPtr lpSecurityAttributes, UInt32 dwCreationDisposition, UInt32 dwFlagsAndAttributes, IntPtr hTemplateFile ); private const UInt32 GENERIC_WRITE = 0x40000000; private const UInt32 GENERIC_READ = 0x80000000; private const UInt32 FILE_SHARE_READ = 0x00000001; private const UInt32 FILE_SHARE_WRITE = 0x00000002; private const UInt32 OPEN_EXISTING = 0x00000003; private const UInt32 FILE_ATTRIBUTE_NORMAL = 0x80; private const UInt32 ERROR_ACCESS_DENIED = 5; private const UInt32 ATTACH_PARRENT = 0xFFFFFFFF; #endregion } }