private void Destroy()
{
User32.SetThreadDesktop(realDesktopHandle);
Switch(shouldDisplayDesktop);
User32.CloseDesktop(testDesktopHandle);
}
public void Delete()
{
RegistryKey userKey = Registry.CurrentUser.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders", RegistryKeyPermissionCheck.ReadWriteSubTree);
string value = (string)userKey?.GetValue("Desktop");
userKey?.SetValue("Desktop", @"%USERPROFILE%\Desktop", RegistryValueKind.ExpandString);
User32.SetThreadDesktop(normalDesktop);
User32.SwitchDesktop(normalDesktop);
User32.SetThreadDesktop(normalDesktop);
User32.CloseDesktop(HandleDesktop);
//Dispose();
}
/// <summary>
/// Create a processes with an access token of another user requires
/// us to modify the desktop ACL to allow everybody to have access to it.
///
/// This requires the SeSecurityPrivilege.
/// This code has been heavily inspired/taken from Invoke-TokenManipulation.
/// </summary>
private void InnerSetDesktopACL()
{
this.InnerElevateProcess(PrivilegeConstants.SeSecurityPrivilege);
var winAccess = (uint)ACCESS_MASK.ACCESS_SYSTEM_SECURITY;
winAccess |= (uint)ACCESS_MASK.WRITE_DAC;
winAccess |= (uint)ACCESS_MASK.READ_CONTROL;
IntPtr hWinSta = User32.OpenWindowStation("WinSta0", false, winAccess);
if (hWinSta == IntPtr.Zero)
{
Logger.GetInstance().Error($"Failed to open handle to window station. OpenWindowStation failed with error code: {Kernel32.GetLastError()}");
throw new Exception();
}
Logger.GetInstance().Debug("Configuring the current Window Station ACL to allow everyone all access.");
this.InnerSetACLAllowEveryone(hWinSta);
if (!User32.CloseWindowStation(hWinSta))
{
Logger.GetInstance().Error($"Failed to release handle to window station. CloseWindowStation failed with error code: {Kernel32.GetLastError()}");
throw new Exception();
}
var desktopAccess = Constants.DESKTOP_GENERIC_ALL | (uint)ACCESS_MASK.WRITE_DAC;
IntPtr hDesktop = User32.OpenDesktop("default", 0, false, desktopAccess);
if (hDesktop == IntPtr.Zero)
{
Logger.GetInstance().Error($"Failed to open handle to the default desktop. OpenDesktop failed with error code: {Kernel32.GetLastError()}");
throw new Exception();
}
Logger.GetInstance().Debug("Configuring the current desktop ACL to allow everyone all access.");
this.InnerSetACLAllowEveryone(hDesktop);
if (!User32.CloseDesktop(hDesktop))
{
Logger.GetInstance().Error($"Failed to close handle to the default desktop. CloseDesktop failed with error code: {Kernel32.GetLastError()}");
}
}
/// <summary>
/// Closes the handle to a desktop.
/// </summary>
/// <returns>True if an open handle was successfully closed.</returns>
public bool Close()
{
// make sure object isnt disposed.
CheckDisposed();
// check there is a desktop open.
if (DesktopHandle == IntPtr.Zero)
{
return(true);
}
// close the desktop.
var result = User32.CloseDesktop(DesktopHandle);
if (result)
{
DesktopHandle = IntPtr.Zero;
}
return(result);
}
/// <summary>
/// Closes the handle to a desktop
/// </summary>
/// <returns>True if an open handle was successfully closed.</returns>
public bool Close()
{
// make sure object isnt disposed
CheckDisposed();
// check there is a desktop open
if (_desktopHandle != IntPtr.Zero)
{
// close the desktop.
bool result = User32.CloseDesktop(_desktopHandle);
if (result)
{
_desktopHandle = IntPtr.Zero;
_desktopName = String.Empty;
}
return(result);
}
// no desktop was open, so desktop is closed
return(true);
}
public static bool Close(IntPtr desktop)
{
return(User32.CloseDesktop(desktop));
}