private Object MarshalDeviceRegistryProperty(IntPtr source, Int32 length, UInt32 type)
{
switch (type)
{
case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_NONE:
return(null);
case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_SZ:
case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_EXPAND_SZ:
return(Marshal.PtrToStringAuto(source));
case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_BINARY:
return(MarshalEx.ReadByteArray(source, length));
case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_DWORD:
//case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_DWORD_LITTLE_ENDIAN:
return((UInt32)Marshal.ReadInt32(source));
case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_DWORD_BIG_ENDIAN:
return(Endianness.Swap((UInt32)Marshal.ReadInt32(source)));
case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_LINK:
return(Marshal.PtrToStringUni(source));
case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_MULTI_SZ:
return(MarshalEx.ReadMultiSzStringList(source, length));
case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_RESOURCE_LIST:
return(null); // TODO
case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_FULL_RESOURCE_DESCRIPTOR:
return(null); // TODO
case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_RESOURCE_REQUIREMENTS_LIST:
return(null); // TODO
case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_QWORD:
//case UsbDeviceWinApi.DeviceRegistryPropertyTypes.REG_QWORD_LITTLE_ENDIAN:
return((UInt64)Marshal.ReadInt64(source));
default:
return(null);
}
}
public static String[] ReadMultiSzStringList(IntPtr source, Int32 length)
{
Byte[] byteArray = MarshalEx.ReadByteArray(source, 0, length);
String multiSz = Encoding.Unicode.GetString(byteArray, 0, length);
List <String> strings = new List <String>();
Int32 start = 0;
Int32 end = multiSz.IndexOf('\0', start);
while (end > start)
{
strings.Add(multiSz.Substring(start, end - start));
start = end + 1;
end = multiSz.IndexOf('\0', start);
}
return(strings.ToArray());
}
private Object MarshalDeviceProperty(IntPtr source, Int32 length, UInt32 type)
{
// TODO: add other types; now covers only all types that are mentioned in devpkey.h
switch (type)
{
case UsbDeviceWinApi.DevicePropertyTypes.DEVPROP_TYPE_UINT32:
return((UInt32)Marshal.ReadInt32(source));
case UsbDeviceWinApi.DevicePropertyTypes.DEVPROP_TYPE_GUID:
return(MarshalEx.ReadGuid(source, length));
case UsbDeviceWinApi.DevicePropertyTypes.DEVPROP_TYPE_FILETIME:
return(MarshalEx.ReadFileTime(source));
case UsbDeviceWinApi.DevicePropertyTypes.DEVPROP_TYPE_BOOLEAN:
return(Marshal.ReadByte(source) != 0);
case UsbDeviceWinApi.DevicePropertyTypes.DEVPROP_TYPE_STRING:
return(Marshal.PtrToStringUni(source));
case UsbDeviceWinApi.DevicePropertyTypes.DEVPROP_TYPE_SECURITY_DESCRIPTOR:
return(MarshalEx.ReadSecurityDescriptor(source, length));
case UsbDeviceWinApi.DevicePropertyTypes.DEVPROP_TYPE_SECURITY_DESCRIPTOR_STRING:
return(Marshal.PtrToStringUni(source));
case UsbDeviceWinApi.DevicePropertyTypes.DEVPROP_TYPE_BINARY:
return(MarshalEx.ReadByteArray(source, length));
case UsbDeviceWinApi.DevicePropertyTypes.DEVPROP_TYPE_STRING_LIST:
return(MarshalEx.ReadMultiSzStringList(source, length));
default:
return(null);
}
}
// TODO: not tested
public static RawSecurityDescriptor ReadSecurityDescriptor(IntPtr source, Int32 length)
{
Byte[] byteArray = MarshalEx.ReadByteArray(source, 0, length);
return(new RawSecurityDescriptor(byteArray, 0));
}
public static Guid ReadGuid(IntPtr source, Int32 length)
{
Byte[] byteArray = MarshalEx.ReadByteArray(source, 0, length);
return(new Guid(byteArray));
}
public static Byte[] ReadByteArray(IntPtr source, Int32 length)
{
return(MarshalEx.ReadByteArray(source, 0, length));
}
