public static UsbFilter Create(UsbFilterType type)
{
var result = new UsbFilter()
{
u32Magic = USBFILTER_MAGIC,
enmType = type,
aFields = new UsbFilterField[(int)UsbFilterIdx.END],
achStrTab = new byte[256],
};
for (var i = 0; i < (int)UsbFilterIdx.END; ++i)
{
result.aFields[i].enmMatch = UsbFilterMatch.IGNORE;
}
return(result);
}
public async Task AddFilter(ExportedDevice device)
{
var filter = UsbFilter.Create(UsbFilterType.CAPTURE);
filter.SetMatch(UsbFilterIdx.VENDOR_ID, UsbFilterMatch.NUM_EXACT, device.VendorId);
filter.SetMatch(UsbFilterIdx.PRODUCT_ID, UsbFilterMatch.NUM_EXACT, device.ProductId);
filter.SetMatch(UsbFilterIdx.DEVICE_REV, UsbFilterMatch.NUM_EXACT, device.BcdDevice);
filter.SetMatch(UsbFilterIdx.DEVICE_CLASS, UsbFilterMatch.NUM_EXACT, device.DeviceClass);
filter.SetMatch(UsbFilterIdx.DEVICE_SUB_CLASS, UsbFilterMatch.NUM_EXACT, device.DeviceSubClass);
filter.SetMatch(UsbFilterIdx.DEVICE_PROTOCOL, UsbFilterMatch.NUM_EXACT, device.DeviceProtocol);
filter.SetMatch(UsbFilterIdx.PORT, UsbFilterMatch.NUM_EXACT, (ushort)device.DevNum);
var output = new byte[Marshal.SizeOf <UsbSupFltAddOut>()];
await UsbMonitor.IoControlAsync(VBoxUsb.IoControl.SUPUSBFLT_IOCTL_ADD_FILTER, StructToBytes(filter), output);
var fltAddOut = BytesToStruct <UsbSupFltAddOut>(output, 0);
if (fltAddOut.rc != 0 /* VINF_SUCCESS */)
{
throw new UnexpectedResultException($"SUPUSBFLT_IOCTL_ADD_FILTER failed with returnCode {fltAddOut.rc}");
}
}