public async Task <IEnumerable <DeviceDefinition> > GetConnectedDeviceDefinitions(uint?vendorId, uint?productId)
{
return(await Task.Run <IEnumerable <DeviceDefinition> >(() =>
{
var deviceDefinitions = new Collection <DeviceDefinition>();
var spDeviceInterfaceData = new SpDeviceInterfaceData();
var spDeviceInfoData = new SpDeviceInfoData();
var spDeviceInterfaceDetailData = new SpDeviceInterfaceDetailData();
spDeviceInterfaceData.CbSize = (uint)Marshal.SizeOf(spDeviceInterfaceData);
spDeviceInfoData.CbSize = (uint)Marshal.SizeOf(spDeviceInfoData);
var guidString = ClassGuid.ToString();
var copyOfClassGuid = new Guid(guidString);
var i = APICalls.SetupDiGetClassDevs(ref copyOfClassGuid, IntPtr.Zero, IntPtr.Zero, APICalls.DigcfDeviceinterface | APICalls.DigcfPresent);
if (IntPtr.Size == 8)
{
spDeviceInterfaceDetailData.CbSize = 8;
}
else
{
spDeviceInterfaceDetailData.CbSize = 4 + Marshal.SystemDefaultCharSize;
}
var x = -1;
var productIdHex = GetHex(productId);
var vendorHex = GetHex(vendorId);
while (true)
{
x++;
var isSuccess = APICalls.SetupDiEnumDeviceInterfaces(i, IntPtr.Zero, ref copyOfClassGuid, (uint)x, ref spDeviceInterfaceData);
if (!isSuccess)
{
var errorCode = Marshal.GetLastWin32Error();
if (errorCode == APICalls.ERROR_NO_MORE_ITEMS)
{
break;
}
throw new Exception($"Could not enumerate devices. Error code: {errorCode}");
}
isSuccess = APICalls.SetupDiGetDeviceInterfaceDetail(i, ref spDeviceInterfaceData, ref spDeviceInterfaceDetailData, 256, out _, ref spDeviceInfoData);
WindowsDeviceBase.HandleError(isSuccess, "Could not get device interface detail");
//Note this is a bit nasty but we can filter Vid and Pid this way I think...
if (vendorId.HasValue && !spDeviceInterfaceDetailData.DevicePath.ToLower().Contains(vendorHex))
{
continue;
}
if (productId.HasValue && !spDeviceInterfaceDetailData.DevicePath.ToLower().Contains(productIdHex))
{
continue;
}
var deviceDefinition = GetDeviceDefinition(spDeviceInterfaceDetailData.DevicePath);
if (deviceDefinition == null)
{
continue;
}
deviceDefinitions.Add(deviceDefinition);
}
APICalls.SetupDiDestroyDeviceInfoList(i);
return deviceDefinitions;
}));
}
public async Task <IEnumerable <ConnectedDeviceDefinition> > GetConnectedDeviceDefinitionsAsync(FilterDeviceDefinition filterDeviceDefinition)
{
return(await Task.Run <IEnumerable <ConnectedDeviceDefinition> >(() =>
{
var deviceDefinitions = new Collection <ConnectedDeviceDefinition>();
var spDeviceInterfaceData = new SpDeviceInterfaceData();
var spDeviceInfoData = new SpDeviceInfoData();
var spDeviceInterfaceDetailData = new SpDeviceInterfaceDetailData();
spDeviceInterfaceData.CbSize = (uint)Marshal.SizeOf(spDeviceInterfaceData);
spDeviceInfoData.CbSize = (uint)Marshal.SizeOf(spDeviceInfoData);
string productIdHex = null;
string vendorHex = null;
var guidString = GetClassGuid().ToString();
var copyOfClassGuid = new Guid(guidString);
const int flags = APICalls.DigcfDeviceinterface | APICalls.DigcfPresent;
Log($"About to call {nameof(APICalls.SetupDiGetClassDevs)} for class Guid {guidString}. Flags: {flags}", null, LogLevel.Information);
var devicesHandle = APICalls.SetupDiGetClassDevs(ref copyOfClassGuid, IntPtr.Zero, IntPtr.Zero, flags);
spDeviceInterfaceDetailData.CbSize = IntPtr.Size == 8 ? 8 : 4 + Marshal.SystemDefaultCharSize;
var i = -1;
if (filterDeviceDefinition != null)
{
if (filterDeviceDefinition.ProductId.HasValue)
{
productIdHex = Helpers.GetHex(filterDeviceDefinition.ProductId);
}
if (filterDeviceDefinition.VendorId.HasValue)
{
vendorHex = Helpers.GetHex(filterDeviceDefinition.VendorId);
}
}
while (true)
{
try
{
i++;
var isSuccess = APICalls.SetupDiEnumDeviceInterfaces(devicesHandle, IntPtr.Zero, ref copyOfClassGuid, (uint)i, ref spDeviceInterfaceData);
if (!isSuccess)
{
var errorCode = Marshal.GetLastWin32Error();
if (errorCode == APICalls.ERROR_NO_MORE_ITEMS)
{
Log($"The call to {nameof(APICalls.SetupDiEnumDeviceInterfaces)} returned ERROR_NO_MORE_ITEMS", null, LogLevel.Information);
break;
}
if (errorCode > 0)
{
Log($"{nameof(APICalls.SetupDiEnumDeviceInterfaces)} called successfully but a device was skipped while enumerating because something went wrong. The device was at index {i}. The error code was {errorCode}.", null, LogLevel.Warning);
}
}
isSuccess = APICalls.SetupDiGetDeviceInterfaceDetail(devicesHandle, ref spDeviceInterfaceData, ref spDeviceInterfaceDetailData, 256, out _, ref spDeviceInfoData);
if (!isSuccess)
{
var errorCode = Marshal.GetLastWin32Error();
if (errorCode == APICalls.ERROR_NO_MORE_ITEMS)
{
Log($"The call to {nameof(APICalls.SetupDiEnumDeviceInterfaces)} returned ERROR_NO_MORE_ITEMS", null, LogLevel.Information);
//TODO: This probably can't happen but leaving this here because there was some strange behaviour
break;
}
if (errorCode > 0)
{
Log($"{nameof(APICalls.SetupDiGetDeviceInterfaceDetail)} called successfully but a device was skipped while enumerating because something went wrong. The device was at index {i}. The error code was {errorCode}.", null, LogLevel.Warning);
}
}
//Note this is a bit nasty but we can filter Vid and Pid this way I think...
if (filterDeviceDefinition != null)
{
if (filterDeviceDefinition.VendorId.HasValue && !spDeviceInterfaceDetailData.DevicePath.ContainsIgnoreCase(vendorHex))
{
continue;
}
if (filterDeviceDefinition.ProductId.HasValue && !spDeviceInterfaceDetailData.DevicePath.ContainsIgnoreCase(productIdHex))
{
continue;
}
}
var connectedDeviceDefinition = GetDeviceDefinition(spDeviceInterfaceDetailData.DevicePath);
if (connectedDeviceDefinition == null)
{
Logger.Log($"Device with path {spDeviceInterfaceDetailData.DevicePath} was skipped. See previous logs.", GetType().Name, null, LogLevel.Warning);
continue;
}
if (!DeviceManager.IsDefinitionMatch(filterDeviceDefinition, connectedDeviceDefinition))
{
continue;
}
deviceDefinitions.Add(connectedDeviceDefinition);
}
catch (Exception ex)
{
Log(ex);
}
}
APICalls.SetupDiDestroyDeviceInfoList(devicesHandle);
return deviceDefinitions;
}));
}
private SafeFileHandle CreateConnection(string deviceId, FileAccessRights desiredAccess, uint shareMode, uint creationDisposition)
{
Logger?.Log($"Calling {nameof(APICalls.CreateFile)} for DeviceId: {deviceId}. Desired Access: {desiredAccess}. Share mode: {shareMode}. Creation Disposition: {creationDisposition}", nameof(ApiService), null, LogLevel.Information);
return(APICalls.CreateFile(deviceId, desiredAccess, shareMode, IntPtr.Zero, creationDisposition, 0, IntPtr.Zero));
}