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namespace LibTSforge.SPP
{
using Microsoft.Win32.SafeHandles;
using System;
using System.Runtime.InteropServices;
public class SPSys
{
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr CreateFile(string lpFileName, uint dwDesiredAccess, uint dwShareMode, IntPtr lpSecurityAttributes, uint dwCreationDisposition, uint dwFlagsAndAttributes, IntPtr hTemplateFile);
private static SafeFileHandle CreateFileSafe(string device)
{
return new SafeFileHandle(CreateFile(device, 0xC0000000, 0, IntPtr.Zero, 3, 0, IntPtr.Zero), true);
}
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern bool DeviceIoControl([In] SafeFileHandle hDevice, [In] uint dwIoControlCode, [In] IntPtr lpInBuffer, [In] int nInBufferSize, [Out] IntPtr lpOutBuffer, [In] int nOutBufferSize, out int lpBytesReturned, [In] IntPtr lpOverlapped);
public static bool IsSpSysRunning()
{
SafeFileHandle file = CreateFileSafe(@"\\.\SpDevice");
IntPtr buffer = Marshal.AllocHGlobal(1);
int bytesReturned;
DeviceIoControl(file, 0x80006008, IntPtr.Zero, 0, buffer, 1, out bytesReturned, IntPtr.Zero);
bool running = Marshal.ReadByte(buffer) != 0;
Marshal.FreeHGlobal(buffer);
file.Close();
return running;
}
public static int ControlSpSys(bool start)
{
SafeFileHandle file = CreateFileSafe(@"\\.\SpDevice");
IntPtr buffer = Marshal.AllocHGlobal(4);
int bytesReturned;
DeviceIoControl(file, start ? 0x8000a000 : 0x8000a004, IntPtr.Zero, 0, buffer, 4, out bytesReturned, IntPtr.Zero);
int result = Marshal.ReadInt32(buffer);
Marshal.FreeHGlobal(buffer);
file.Close();
return result;
}
}
}
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