USBD_STATUS
HidFx2ValidateConfigurationDescriptor(
IN PUSB_CONFIGURATION_DESCRIPTOR ConfigDesc,
IN ULONG BufferLength,
_Inout_ PUCHAR *Offset
)
/*++
Routine Description:
Validates a USB Configuration Descriptor
Parameters:
ConfigDesc: Pointer to the entire USB Configuration descriptor returned by the device
BufferLength: Known size of buffer pointed to by ConfigDesc (Not wTotalLength)
Offset: if the USBD_STATUS returned is not USBD_STATUS_SUCCESS, offet will
be set to the address within the ConfigDesc buffer where the failure occured.
Return Value:
USBD_STATUS
Success implies the configuration descriptor is valid.
--*/
{
USBD_STATUS status = USBD_STATUS_SUCCESS;
USHORT ValidationLevel = 3;
PAGED_CODE();
//
// Call USBD_ValidateConfigurationDescriptor to validate the descriptors which are present in this supplied configuration descriptor.
// USBD_ValidateConfigurationDescriptor validates that all descriptors are completely contained within the configuration descriptor buffer.
// It also checks for interface numbers, number of endpoints in an interface etc.
// Please refer to msdn documentation for this function for more information.
//
status = USBD_ValidateConfigurationDescriptor( ConfigDesc, BufferLength , ValidationLevel , Offset , POOL_TAG );
if (!(NT_SUCCESS (status)) ){
return status;
}
//
// TODO: You should validate the correctness of other descriptors which are not taken care by USBD_ValidateConfigurationDescriptor
// Check that all such descriptors have size >= sizeof(the descriptor they point to)
// Check for any association between them if required
//
return status;
}
{
USBD_STATUS status = USBD_STATUS_SUCCESS;
USHORT ValidationLevel = 3;
PAGED_CODE();
//
// Call USBD_ValidateConfigurationDescriptor to validate the descriptors which are present in this supplied configuration descriptor.
// USBD_ValidateConfigurationDescriptor validates that all descriptors are completely contained within the configuration descriptor buffer.
// It also checks for interface numbers, number of endpoints in an interface etc.
// Please refer to msdn documentation for this function for more information.
//
status = USBD_ValidateConfigurationDescriptor( ConfigDesc, BufferLength , ValidationLevel , Offset , POOL_TAG );
if (!(NT_SUCCESS (status)) ){
return status;
}
//
// TODO: You should validate the correctness of other descriptors which are not taken care by USBD_ValidateConfigurationDescriptor
// Check that all such descriptors have size >= sizeof(the descriptor they point to)
// Check for any association between them if required
//
return status;
}
_IRQL_requires_(PASSIVE_LEVEL)