private static byte[] GetUsbDevicePropertyInWindows(
Windows.SafeDevInfoSetHandle deviceInfoSetHandle,
ref Windows.SetupDeviceInfoData deviceInfoData,
Windows.SetupDeviceRegistryProperty property,
ref Windows.RegType regType)
{
var requiredSize = 0U;
var success = Windows.SetupDiGetDeviceRegistryPropertyW(
deviceInfoSetHandle,
ref deviceInfoData,
property,
IntPtr.Zero,
IntPtr.Zero,
0,
ref requiredSize
);
if (!success)
{
var win32Error = Marshal.GetLastWin32Error();
if (win32Error == (int)Windows.Error.InvalidData)
{
Logger.GetInstance(typeof(UsbManager)).Debug("The requested property " + property + " does not exist");
regType = 0;
return(null);
}
if (win32Error != (int)Windows.Error.InsufficientBuffer)
{
Logger.GetInstance(typeof(UsbManager)).Error("Can not query USB device registry property, error code: " + win32Error);
regType = 0;
return(null);
}
}
var propertyBuffer = new byte[requiredSize];
success = Windows.SetupDiGetDeviceRegistryPropertyW(
deviceInfoSetHandle,
ref deviceInfoData,
property,
ref regType,
propertyBuffer,
(uint)propertyBuffer.Length,
ref requiredSize
);
if (!success)
{
var win32Error = Marshal.GetLastWin32Error();
Logger.GetInstance(typeof(UsbManager)).Error("Can not get USB device registry property, error code: " + win32Error);
return(null);
}
return(propertyBuffer);
}
private static string GetUsbDeviceStringPropertyInWindows(
Windows.SafeDevInfoSetHandle deviceInfoSetHandle,
ref Windows.SetupDeviceInfoData deviceInfoData,
Windows.SetupDeviceRegistryProperty property)
{
var regType = Windows.RegType.None;
var bytes = GetUsbDevicePropertyInWindows(
deviceInfoSetHandle,
ref deviceInfoData,
property,
ref regType
);
if (bytes == null || bytes.Length == 0 || regType != Windows.RegType.Sz)
{
return(string.Empty);
}
return(Encoding.Unicode.GetString(bytes, 0, bytes.Length - sizeof(char)).Trim());
}
private static string[] GetUsbDeviceMultiStringPropertyInWindows(
Windows.SafeDevInfoSetHandle deviceInfoSetHandle,
ref Windows.SetupDeviceInfoData deviceInfoData,
Windows.SetupDeviceRegistryProperty property)
{
var regType = Windows.RegType.None;
var bytes = GetUsbDevicePropertyInWindows(
deviceInfoSetHandle,
ref deviceInfoData,
property,
ref regType
);
if (bytes == null || bytes.Length == 0 || regType != Windows.RegType.MultiSz)
{
return(new string[] {});
}
return(Encoding.Unicode.GetString(bytes).Split(
new[] { '\0' },
StringSplitOptions.RemoveEmptyEntries
));
}
