/// <summary>return a list of the down stream ports</summary>
/// <returns>List of downstream ports</returns>
internal IEnumerable <UsbPort> GetPorts()
{
List <UsbPort> portList = new List <UsbPort>();
// Open a handle to the Hub device
IntPtr h = CreateFile(HubDevicePath, GENERIC_WRITE, FILE_SHARE_WRITE, IntPtr.Zero, OPEN_EXISTING, 0,
IntPtr.Zero);
if (h == INVALID_HANDLE_VALUE)
{
return(new ReadOnlyCollection <UsbPort>(portList));
}
int nBytes = Marshal.SizeOf(typeof(UsbNodeConnectionInformationEx));
IntPtr ptrNodeConnection = Marshal.AllocHGlobal(nBytes);
// loop thru all of the ports on the hub
// BTW: Ports are numbered starting at 1
for (int i = 1; i <= HubPortCount; i++)
{
var nodeConnection = new UsbNodeConnectionInformationEx
{
ConnectionIndex = i
};
Marshal.StructureToPtr(nodeConnection, ptrNodeConnection, true);
if (!DeviceIoControl(h, IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX, ptrNodeConnection, nBytes,
ptrNodeConnection, nBytes, out _, IntPtr.Zero))
{
continue;
}
nodeConnection =
(UsbNodeConnectionInformationEx)Marshal.PtrToStructure(ptrNodeConnection,
typeof(UsbNodeConnectionInformationEx));
// load up the USBPort class
var port = new UsbPort
{
PortPortNumber = i,
PortHubDevicePath = HubDevicePath,
PortStatus = ((UsbConnectionStatus)nodeConnection.ConnectionStatus).ToString(),
PortSpeed = ((UsbDeviceSpeed)nodeConnection.Speed).ToString(),
PortIsDeviceConnected =
nodeConnection.ConnectionStatus == (int)UsbConnectionStatus.DeviceConnected,
PortIsHub = Convert.ToBoolean(nodeConnection.DeviceIsHub),
PortDeviceDescriptor = nodeConnection.DeviceDescriptor
};
// add it to the list
portList.Add(port);
}
Marshal.FreeHGlobal(ptrNodeConnection);
CloseHandle(h);
// convert it into a Collection
return(new ReadOnlyCollection <UsbPort>(portList));
}
public IEnumerable <UsbPort> GetPorts()
{
var h = Kernel32.CreateFile(this.HubDevicePath, UsbConstants.GENERIC_WRITE, UsbConstants.FILE_SHARE_WRITE, IntPtr.Zero, UsbConstants.OPEN_EXISTING, default(int), IntPtr.Zero);
if (h.ToInt32() != UsbConstants.INVALID_HANDLE_VALUE)
{
var nBytes = Marshal.SizeOf(typeof(UsbNodeConnectionInformationEx));
var ptrNodeConnection = Marshal.AllocHGlobal(nBytes);
for (var i = 1; i <= this.HubPortCount; i++)
{
var nodeConnection = new UsbNodeConnectionInformationEx
{
ConnectionIndex = i,
};
Marshal.StructureToPtr(nodeConnection, ptrNodeConnection, true);
if (Kernel32.DeviceIoControl(h, UsbConstants.IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX, ptrNodeConnection, nBytes, ptrNodeConnection, nBytes, out int nBytesReturned, IntPtr.Zero))
{
nodeConnection = (UsbNodeConnectionInformationEx)Marshal.PtrToStructure(ptrNodeConnection, typeof(UsbNodeConnectionInformationEx));
var status = (UsbConnectionStatus)nodeConnection.ConnectionStatus;
var speed = (UsbDeviceSpeed)nodeConnection.Speed;
var port = new UsbPort(this)
{
PortNumber = i,
Status = status.ToString(),
HubDevicePath = this.HubDevicePath,
Speed = speed.ToString(),
IsHub = Convert.ToBoolean(nodeConnection.DeviceIsHub),
IsDeviceConnected = nodeConnection.ConnectionStatus == (int)UsbConnectionStatus.DeviceConnected,
DeviceDescriptor = nodeConnection.DeviceDescriptor,
};
yield return(port);
}
}
Marshal.FreeHGlobal(ptrNodeConnection);
Kernel32.CloseHandle(h);
}
}
public static async Task <ExportedDevice[]> GetAll(CancellationToken cancellationToken)
{
var exportedDevices = new SortedDictionary <string, ExportedDevice>();
using var deviceInfoSet = NativeMethods.SetupDiGetClassDevs(IntPtr.Zero, "USB", IntPtr.Zero, DiGetClassFlags.DIGCF_ALLCLASSES | DiGetClassFlags.DIGCF_PRESENT);
foreach (var devInfoData in EnumDeviceInfo(deviceInfoSet))
{
cancellationToken.ThrowIfCancellationRequested();
var instanceId = GetDevicePropertyString(deviceInfoSet, devInfoData, DEVPKEY_Device_InstanceId);
if (IsUsbHub(instanceId))
{
// device is itself a USB hub, which is not supported
continue;
}
var parentId = GetDevicePropertyString(deviceInfoSet, devInfoData, DEVPKEY_Device_Parent);
if (!IsUsbHub(parentId))
{
// parent is not a USB hub (which it must be for this device to be supported)
continue;
}
// OK, so the device is directly connected to a hub, but is not a hub itself ... this looks promising
GetBusId(deviceInfoSet, devInfoData, out var hubNum, out var connectionIndex);
var address = GetDevicePropertyUInt32(deviceInfoSet, devInfoData, DEVPKEY_Device_Address);
if (connectionIndex != address)
{
throw new NotSupportedException($"DEVPKEY_Device_Address ({address}) does not match DEVPKEY_Device_LocationInfo ({connectionIndex})");
}
// now query the parent USB hub for device details
{
cancellationToken.ThrowIfCancellationRequested();
using var hubs = NativeMethods.SetupDiGetClassDevs(GUID_DEVINTERFACE_USB_HUB, parentId, IntPtr.Zero, DiGetClassFlags.DIGCF_DEVICEINTERFACE | DiGetClassFlags.DIGCF_PRESENT);
var(_, interfaceData) = EnumDeviceInterfaces(hubs, GUID_DEVINTERFACE_USB_HUB).Single();
var hubPath = GetDeviceInterfaceDetail(hubs, interfaceData);
cancellationToken.ThrowIfCancellationRequested();
using var hubFile = new DeviceFile(hubPath);
using var cancellationTokenRegistration = cancellationToken.Register(() => hubFile.Dispose());
var data = new UsbNodeConnectionInformationEx()
{
ConnectionIndex = connectionIndex
};
var buf = StructToBytes(data);
await hubFile.IoControlAsync(IoControl.IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX, buf, buf);
BytesToStruct(buf, 0, out data);
var speed = MapWindowsSpeedToLinuxSpeed(data.Speed);
var data2 = new UsbNodeConnectionInformationExV2()
{
ConnectionIndex = connectionIndex,
Length = (uint)Marshal.SizeOf <UsbNodeConnectionInformationExV2>(),
SupportedUsbProtocols = UsbProtocols.Usb110 | UsbProtocols.Usb200 | UsbProtocols.Usb300,
};
var buf2 = StructToBytes(data2);
await hubFile.IoControlAsync(IoControl.IOCTL_USB_GET_NODE_CONNECTION_INFORMATION_EX_V2, buf2, buf2);
BytesToStruct(buf2, 0, out data2);
if ((data2.SupportedUsbProtocols & UsbProtocols.Usb300) != 0)
{
if ((data2.Flags & UsbNodeConnectionInformationExV2Flags.DeviceIsOperatingAtSuperSpeedPlusOrHigher) != 0)
{
speed = Linux.UsbDeviceSpeed.USB_SPEED_SUPER_PLUS;
}
else if ((data2.Flags & UsbNodeConnectionInformationExV2Flags.DeviceIsOperatingAtSuperSpeedOrHigher) != 0)
{
speed = Linux.UsbDeviceSpeed.USB_SPEED_SUPER;
}
}
var exportedDevice = new ExportedDevice()
{
Path = instanceId,
BusNum = hubNum,
DevNum = connectionIndex,
Speed = speed,
VendorId = data.DeviceDescriptor.idVendor,
ProductId = data.DeviceDescriptor.idProduct,
BcdDevice = data.DeviceDescriptor.bcdDevice,
DeviceClass = data.DeviceDescriptor.bDeviceClass,
DeviceSubClass = data.DeviceDescriptor.bDeviceSubClass,
DeviceProtocol = data.DeviceDescriptor.bDeviceProtocol,
ConfigurationValue = data.CurrentConfigurationValue,
NumConfigurations = data.DeviceDescriptor.bNumConfigurations,
ConfigurationDescriptors = await GetConfigurationDescriptor(hubFile, connectionIndex, data.DeviceDescriptor.bNumConfigurations),
};
exportedDevices.Add(exportedDevice.BusId, exportedDevice);
}
}
return(exportedDevices.Values.ToArray());
}
