C# DriverControl

class DriverControl{private IntPtr hSCManager;private IntPtr hService;private IntPtr hDevice;private uint dwErrorCode;public const int MAX_SERVICE_NAME = 256;public const int MAX_DISPLAY_NAME = 256;public const int MAX_PATH_LENGTH = 260;private void initialize(){hSCManager = Advapi32.OpenSCManager(null, null, Advapi32.SC_MANAGER_ALL_ACCESS);if (hSCManager == IntPtr.Zero){dwErrorCode = Kernel32.GetLastError();}hService = IntPtr.Zero;hDevice = (IntPtr)Kernel32.INVALID_HANDLE_VALUE;dwErrorCode = 0;}private bool queryCurrentStatus(out uint dwCurrentState){dwCurrentState = 0;if (hService != IntPtr.Zero){Advapi32.SERVICE_STATUS serviceStatus = new Advapi32.SERVICE_STATUS();if (Advapi32.QueryServiceStatus(hService, ref serviceStatus) != 0){dwCurrentState = serviceStatus.dwCurrentState;return true;}else{dwErrorCode = Kernel32.GetLastError();}}return false;}public uint getLastError(){return dwErrorCode;}public bool isOpened(){return !hService.Equals(IntPtr.Zero);}public bool open(string driverName){if (hSCManager != IntPtr.Zero){if (driverName == ""){return false;}if (hService != IntPtr.Zero){Advapi32.CloseServiceHandle(hService);}hService = Advapi32.OpenService(hSCManager, driverName, Advapi32.SERVICE_ALL_ACCESS);if (hService != IntPtr.Zero){return true;}else{dwErrorCode = Kernel32.GetLastError();}}return false;}public bool install(string driverName, string driverPath, string displayName){if (hSCManager != IntPtr.Zero){if (driverName == "" || driverPath == "" || displayName == ""){return false;}if (hService != IntPtr.Zero){Advapi32.CloseServiceHandle(hService);}//CreateService(scHandle, szDrvSvcName, szDrvDisplayName, //SERVICE_ALL_ACCESS, SERVICE_KERNEL_DRIVER, SERVICE_DEMAND_START, //SERVICE_ERROR_NORMAL, szDrvFilePath, 0, 0, 0, 0, 0)hService = Advapi32.CreateService(hSCManager, driverName, displayName, Advapi32.SERVICE_ALL_ACCESS,Advapi32.SERVICE_KERNEL_DRIVER, Advapi32.SERVICE_DEMAND_START, Advapi32.SERVICE_ERROR_NORMAL,driverPath, null, IntPtr.Zero, null, null, null);if (hService != IntPtr.Zero){return true;}else{dwErrorCode = Kernel32.GetLastError();}}return false;}public bool start(){if (hService != IntPtr.Zero){if (Advapi32.StartService(hService, 0, null) != 0){uint dwCurrentState = 0;long nCount = 0;bool bRet = queryCurrentStatus(out dwCurrentState);while (nCount < 31 || (bRet && dwCurrentState != Advapi32.SERVICE_RUNNING)){Interlocked.Increment(ref nCount);bRet = queryCurrentStatus(out dwCurrentState);Thread.Sleep(31);}return true;}else{dwErrorCode = Kernel32.GetLastError();}}return false;}public bool stop(){unlink();if (hService != IntPtr.Zero){Advapi32.SERVICE_STATUS serviceStatus = new Advapi32.SERVICE_STATUS();if (Advapi32.ControlService(hService, Advapi32.SERVICE_CONTROL_STOP, ref serviceStatus) != 0){long nCount = 0;uint dwCurrentState;bool bRet = queryCurrentStatus(out dwCurrentState);while (nCount < 31 || (bRet && dwCurrentState != Advapi32.SERVICE_STOPPED)){Interlocked.Increment(ref nCount);bRet = queryCurrentStatus(out dwCurrentState);Thread.Sleep(31);}return true;}else{dwErrorCode = Kernel32.GetLastError();}}return false;}public bool uninstall(){if (hService != IntPtr.Zero){stop();if (Advapi32.DeleteService(hService) != 0){Advapi32.CloseServiceHandle(hService);hService = IntPtr.Zero;return true;}else{dwErrorCode = Kernel32.GetLastError();}}return false;}public bool link(string deviceLink){if (hDevice == (IntPtr)Kernel32.INVALID_HANDLE_VALUE){if (deviceLink == ""){return false;}if (!deviceLink.StartsWith("\\\\.\\")){deviceLink = "\\\\.\\" + deviceLink;}hDevice = Kernel32.CreateFile(deviceLink, Kernel32.GENERIC_READ | Kernel32.GENERIC_WRITE, 0, IntPtr.Zero,Kernel32.OPEN_EXISTING, Kernel32.FILE_ATTRIBUTE_NORMAL, IntPtr.Zero);if (hDevice != (IntPtr)Kernel32.INVALID_HANDLE_VALUE){return true;}else{dwErrorCode = Kernel32.GetLastError();}}return false;}public bool ioControl(uint dwIoCtlCode, byte[] pBufferIn, uint dwBufferIn, byte[] pBufferOut, uint dwBufferOut){if (hDevice != (IntPtr)Kernel32.INVALID_HANDLE_VALUE){uint bytesReturn = 0;int ioret = Kernel32.DeviceIoControl(hDevice, dwIoCtlCode,pBufferIn, dwBufferIn, pBufferOut, dwBufferOut,ref bytesReturn, IntPtr.Zero);if (ioret == 0){dwErrorCode = Kernel32.GetLastError();}else{return true;}}return false;}public void unlink(){Kernel32.CloseHandle(hDevice);hDevice = (IntPtr)Kernel32.INVALID_HANDLE_VALUE;}public DriverControl(){initialize();}public DriverControl(string serviceName){initialize();open(serviceName);}~DriverControl(){if (hDevice != (IntPtr)Kernel32.INVALID_HANDLE_VALUE){Kernel32.CloseHandle(hDevice);}if (hService != IntPtr.Zero){Advapi32.CloseServiceHandle(hService);}if (hSCManager != IntPtr.Zero){Advapi32.CloseServiceHandle(hSCManager);}}}