.NNET CF OBEX Service control

gistfile1.cs

	public static class NativeMethods
	{
		[DllImport("coredll")]
		public extern static bool CloseHandle(IntPtr handle);

		[DllImport("coredll", CharSet = CharSet.Auto, SetLastError = true)]
		public static extern bool DeviceIoControl(
			IntPtr hDevice, 
			int dwIoControlCode, 
			[In] int[] inBuffer, 
			int nInBufferSize, 
			[Out] int[] outBuffer, 
			int nOutBufferSize, 
			ref int pBytesReturned, 
			IntPtr lpOverlapped);

		[DllImport("coredll")]
		public extern static IntPtr CreateFile(string filename, int desiredAccess, int shareMode, IntPtr securityAttributes, ECreationDisposition creationDisposition, int flags, IntPtr template);
	}

	public class BtObexControl
	{
		private enum ObexServiceState: uint
		{
			SERVICE_STATE_OFF           = 0,
			SERVICE_STATE_ON            = 1,
			SERVICE_STATE_STARTING_UP   = 2,
			SERVICE_STATE_SHUTTING_DOWN = 3,
			SERVICE_STATE_UNLOADING     = 4,
			SERVICE_STATE_UNINITIALIZED = 5,
			SERVICE_STATE_UNKNOWN       = 0xffffffff
		}

		private const int IOCTL_SERVICE_START = 0x41000004;
		private const int IOCTL_SERVICE_STOP = 0x41000008;
		private const int IOCTL_SERVICE_REFRESH = 0x4100000C;
		private const int IOCTL_SERVICE_STATUS = 0x41000020;

		private ObexServiceState QueryObexStatus()
		{
			var file = NativeMethods.CreateFile("OBX0:",
			                                    0,
			                                    0,
			                                    IntPtr.Zero,
			                                    ECreationDisposition.OpenExisting,
			                                    0,
			                                    IntPtr.Zero);
			if (file == (IntPtr)(-1))
				//throw new InvalidOperationException("Unable to Create File");
				return ObexServiceState.SERVICE_STATE_UNKNOWN;

			try
			{
				var bytesReturned = 0;
				var outBuf = new int[1];
				var res = NativeMethods.DeviceIoControl(file,
				                                        IOCTL_SERVICE_STATUS,
				                                        null,
				                                        0,
				                                        outBuf,
				                                        sizeof(int) * outBuf.Length,
				                                        ref bytesReturned,
				                                        IntPtr.Zero);
				if (!res)
				{
					return ObexServiceState.SERVICE_STATE_UNKNOWN;
				}
				return (ObexServiceState) outBuf[0];
			}
			finally
			{
				NativeMethods.CloseHandle(file);
			}
		}

		private bool StartObexService()
		{
			return ObexIoCtl(IOCTL_SERVICE_START);
		}

		private bool StopObexService()
		{
			return ObexIoCtl(IOCTL_SERVICE_STOP);
		}

		private bool ObexIoCtl(int ioCtl)
		{
			var file = NativeMethods.CreateFile("OBX0:", 0, 0, IntPtr.Zero, ECreationDisposition.OpenExisting, 0, IntPtr.Zero);
			if (file == (IntPtr)(-1)) return false;
			try
			{
				var bytesReturned = 0;
				var res = NativeMethods.DeviceIoControl(file,
				                                                    ioCtl,
				                                                    null,
				                                                    0,
				                                                    null,
				                                                    0,
				                                                    ref bytesReturned,
				                                                    IntPtr.Zero);
				return res;
			}
			finally
			{
				NativeMethods.CloseHandle(file);
			}
		}
	}