/// <summary>
/// Builds the device.
/// </summary>
/// <param name="parent">The parent.</param>
/// <param name="portCount">The port count.</param>
/// <param name="devicePath">The device path.</param>
/// <returns>The device.</returns>
public static Device BuildDevice(Device parent, uint portCount, string devicePath)
{
Device device = null;
// Open a handle to the Hub device
IntPtr deviceHandle = KernelApi.CreateFile(devicePath, UsbApi.GenericWrite, UsbApi.FileShareWrite,
IntPtr.Zero,
UsbApi.OpenExisting, 0, IntPtr.Zero);
try
{
if (deviceHandle.ToInt64() != UsbApi.InvalidHandleValue)
{
if (GetNodeConnectionInformationEx(portCount, deviceHandle, out var nodeConnection))
{
if (nodeConnection.ConnectionStatus == UsbIoControl.UsbConnectionStatus.DeviceConnected)
{
GetUsbPortConnectorProperties(portCount, deviceHandle,
out var portConnectorProperties);
GetNodeConnectionInformationExV2(portCount, deviceHandle, out var nodeConnectionV2);
if (nodeConnection.DeviceDescriptor.bDeviceClass == UsbDesc.DeviceClassType.UsbHubDevice)
{
if (GetUsbNodeConnectionName(portCount, deviceHandle, out var connectionName))
{
string name = @"\\?\" + connectionName.NodeName;
device = new UsbHub(nodeConnection.DeviceDescriptor, name)
{
NodeConnectionInfo = nodeConnection,
NodeConnectionInfoV2 = nodeConnectionV2,
UsbPortConnectorProperties = portConnectorProperties
};
}
}
else
{
device = new UsbDevice(nodeConnection.DeviceDescriptor, portCount, devicePath)
{
NodeConnectionInfo = nodeConnection,
NodeConnectionInfoV2 = nodeConnectionV2,
UsbPortConnectorProperties = portConnectorProperties
};
}
}
else
{
device = new UsbDevice(null, portCount)
{
NodeConnectionInfo = nodeConnection
};
}
}
}
}
finally
{
if (deviceHandle.ToInt64() != UsbApi.InvalidHandleValue)
{
KernelApi.CloseHandle(deviceHandle);
}
}
return(device);
}
/// <summary>
/// Initializes a new instance of the <see cref="UsbHub"/> class.
/// </summary>
/// <param name="deviceDescriptor">The device descriptor.</param>
/// <param name="devicePath">The device path.</param>
public UsbHub(UsbSpec.UsbDeviceDescriptor deviceDescriptor, string devicePath)
: base(deviceDescriptor, 0, devicePath)
{
DeviceDescription = "Standard-USB-Hub";
DevicePath = devicePath;
IntPtr hostControllerHandle = IntPtr.Zero;
try
{
hostControllerHandle = KernelApi.CreateFile(devicePath, UsbApi.GenericWrite, UsbApi.FileShareWrite, IntPtr.Zero, UsbApi.OpenExisting, 0, IntPtr.Zero);
if (hostControllerHandle.ToInt64() != UsbApi.InvalidHandleValue)
{
GetRootHubName(hostControllerHandle);
// TODO: Get the driver key name for the root hub.
IntPtr hubHandle = IntPtr.Zero;
try
{
// Now let's open the hub (based upon the hub name we got above).
hubHandle = KernelApi.CreateFile(DevicePath, UsbApi.GenericWrite, UsbApi.FileShareWrite, IntPtr.Zero, UsbApi.OpenExisting, 0, IntPtr.Zero);
if (hubHandle.ToInt64() != UsbApi.InvalidHandleValue)
{
GetUsbNodeInformation(hubHandle);
GetUsbHubInformation(hubHandle);
GetHubCapabilities(hubHandle);
}
}
finally
{
if (hubHandle != IntPtr.Zero)
{
KernelApi.CloseHandle(hubHandle);
}
}
}
else
{
throw new UsbHubException("No port found!");
}
}
finally
{
if (hostControllerHandle != IntPtr.Zero)
{
KernelApi.CloseHandle(hostControllerHandle);
}
}
for (uint index = 1; index <= PortCount; index++)
{
// Initialize a new port and save the port.
try
{
Devices.Add(DeviceFactory.BuildDevice(this, index, DevicePath));
}
catch (Exception e)
{
CoreTraceSource.Source.TraceEvent(TraceEventType.Error, CoreTraceSource.UsbHubSourceId,
"Unhandled exception occurred: {0}", e);
}
}
}
private void Initalise(uint index)
{
IntPtr ptr = IntPtr.Zero;
IntPtr deviceInfoHandle = IntPtr.Zero;
try
{
ptr = Marshal.AllocHGlobal(UsbApi.MaxBufferSize);
deviceInfoHandle = UsbApi.SetupDiGetClassDevs(ref _guid, 0, IntPtr.Zero,
UsbApi.DigcfPresent | UsbApi.DigcfDeviceinterface);
// Create a device interface data structure
UsbApi.SpDeviceInterfaceData deviceInterfaceData = new UsbApi.SpDeviceInterfaceData();
deviceInterfaceData.CbSize = Marshal.SizeOf(deviceInterfaceData);
// Start the enumeration.
Boolean success =
UsbApi.SetupDiEnumDeviceInterfaces(deviceInfoHandle, IntPtr.Zero, ref _guid, (int)index,
ref deviceInterfaceData);
if (success)
{
// Build a DevInfo data structure.
UsbApi.SpDevinfoData deviceInfoData = new UsbApi.SpDevinfoData();
deviceInfoData.CbSize = Marshal.SizeOf(deviceInfoData);
// Build a device interface detail data structure.
UsbApi.SpDeviceInterfaceDetailData deviceInterfaceDetailData =
new UsbApi.SpDeviceInterfaceDetailData
{
CbSize = UIntPtr.Size == 8 ? 8 : (int)(4 + (uint)Marshal.SystemDefaultCharSize)
};
// Now we can get some more detailed informations.
int nRequiredSize = 0;
int nBytes = UsbApi.MaxBufferSize;
if (UsbApi.SetupDiGetDeviceInterfaceDetail(deviceInfoHandle, ref deviceInterfaceData,
ref deviceInterfaceDetailData, nBytes, ref nRequiredSize, ref deviceInfoData))
{
DevicePath = deviceInterfaceDetailData.DevicePath;
ParseDevicePath(DevicePath);
// Get the device description and driver key name.
int requiredSize = 0;
int regType = UsbApi.RegSz;
if (UsbApi.SetupDiGetDeviceRegistryProperty(deviceInfoHandle, ref deviceInfoData,
(int)UsbApi.Spdrp.SpdrpDevicedesc,
ref regType,
ptr,
UsbApi.MaxBufferSize, ref requiredSize))
{
DeviceDescription = Marshal.PtrToStringAuto(ptr);
}
if (UsbApi.SetupDiGetDeviceRegistryProperty(
deviceInfoHandle,
ref deviceInfoData,
(int)UsbApi.Spdrp.SpdrpDriver,
ref regType,
ptr,
UsbApi.MaxBufferSize,
ref requiredSize))
{
DriverKey = Marshal.PtrToStringAuto(ptr);
}
}
IntPtr hostControllerHandle = IntPtr.Zero;
try
{
hostControllerHandle = KernelApi.CreateFile(deviceInterfaceDetailData.DevicePath,
UsbApi.GenericWrite,
UsbApi.FileShareWrite, IntPtr.Zero,
UsbApi.OpenExisting, 0, IntPtr.Zero);
if (deviceInfoHandle.ToInt64() != UsbApi.InvalidHandleValue)
{
GetHostControllerPowerMap(hostControllerHandle);
GetHostControllerInfo(hostControllerHandle);
}
}
finally
{
if (hostControllerHandle != IntPtr.Zero ||
deviceInfoHandle.ToInt64() != UsbApi.InvalidHandleValue)
{
KernelApi.CloseHandle(hostControllerHandle);
}
}
try
{
Devices.Add(new UsbHub(null, DevicePath));
}
catch (Exception ex)
{
CoreTraceSource.Source.TraceEvent(TraceEventType.Error, CoreTraceSource.UsbControllerSourceId,
"Unhandled exception occurred: {0}", ex);
throw new UsbControllerException("Unhandled exception occurred", ex);
}
}
else
{
throw new UsbControllerException("No usb controller found!");
}
}
finally
{
if (ptr != IntPtr.Zero)
{
Marshal.FreeHGlobal(ptr);
}
if (deviceInfoHandle != IntPtr.Zero)
{
UsbApi.SetupDiDestroyDeviceInfoList(deviceInfoHandle);
}
}
}