VOID
MouFilter_ServiceCallback(
IN PDEVICE_OBJECT DeviceObject,
IN PMOUSE_INPUT_DATA InputDataStart,
IN PMOUSE_INPUT_DATA InputDataEnd,
IN OUT PULONG InputDataConsumed
)
/*++
Routine Description:
Called when there are mouse packets to report to the RIT. You can do
anything you like to the packets. For instance:
o Drop a packet altogether
o Mutate the contents of a packet
o Insert packets into the stream
Arguments:
DeviceObject - Context passed during the connect IOCTL
InputDataStart - First packet to be reported
InputDataEnd - One past the last packet to be reported. Total number of
packets is equal to InputDataEnd - InputDataStart
InputDataConsumed - Set to the total number of packets consumed by the RIT
(via the function pointer we replaced in the connect
IOCTL)
Return Value:
Status is returned.
--*/
{
PDEVICE_EXTENSION devExt;
WDFDEVICE hDevice;
hDevice = WdfWdmDeviceGetWdfDeviceHandle(DeviceObject);
devExt = FilterGetData(hDevice);
//
// UpperConnectData must be called at DISPATCH
//
(*(PSERVICE_CALLBACK_ROUTINE) devExt->UpperConnectData.ClassService)(
devExt->UpperConnectData.ClassDeviceObject,
InputDataStart,
InputDataEnd,
InputDataConsumed
);
}
void MouseTrapServiceCallback(DEVICE_OBJECT* deviceObject, MOUSE_INPUT_DATA* inputDataStart, MOUSE_INPUT_DATA* inputDataEnd, ULONG* inputDataConsumed) {
// Get context data
WDFDEVICE hDevice = WdfWdmDeviceGetWdfDeviceHandle(deviceObject);
PDEVICE_CONTEXT context = DeviceGetContext(hDevice);
// Invert all scroll actions
for(PMOUSE_INPUT_DATA current = inputDataStart; current != inputDataEnd; current++) {
if(current->ButtonFlags & MOUSE_WHEEL) {
short value = (short)current->ButtonData;
current->ButtonData = (USHORT)(-value);
}
}
// Call parent
#pragma warning(push)
#pragma warning(disable:4055)
(*(PSERVICE_CALLBACK_ROUTINE)context->UpperConnectData.ClassService)(context->UpperConnectData.ClassDeviceObject, inputDataStart, inputDataEnd, inputDataConsumed);
#pragma warning(pop)
}
VOID
CBUpdateCardState(
PSMARTCARD_EXTENSION SmartcardExtension,
UCHAR IccState,
BOOLEAN SystemWakeUp
)
{
ULONG oldState;
NTSTATUS status;
KIRQL irql;
WDFREQUEST request;
PDEVICE_EXTENSION DeviceExtension;
KeAcquireSpinLock(
&SmartcardExtension->OsData->SpinLock,
&irql
);
SmartcardDebug(
DEBUG_TRACE,
( "PSCR!CBUpdateCardState: Enter \n" )
);
oldState =
(SmartcardExtension->ReaderCapabilities.CurrentState > SCARD_ABSENT ?
SCARD_PRESENT : SCARD_ABSENT);
SmartcardExtension->ReaderCapabilities.CurrentState =
(IccState == PSCR_ICC_PRESENT ? SCARD_PRESENT : SCARD_ABSENT);
SmartcardDebug(
DEBUG_DRIVER,
( "PSCR!CBUpdateCardState: Smart card %s\n",
IccState == PSCR_ICC_PRESENT ? "inserted" : "removed")
);
if ( SmartcardExtension->OsData->NotificationIrp != NULL &&
(SystemWakeUp &&
(oldState == SCARD_PRESENT ||
SmartcardExtension->ReaderCapabilities.CurrentState == SCARD_PRESENT) ||
SmartcardExtension->ReaderCapabilities.CurrentState != oldState)) {
PIRP notificationIrp ;
notificationIrp = InterlockedExchangePointer(
&(SmartcardExtension->OsData->NotificationIrp),
NULL
);
DeviceExtension = GetDeviceExtension(WdfWdmDeviceGetWdfDeviceHandle(SmartcardExtension->OsData->DeviceObject));
KeReleaseSpinLock(
&SmartcardExtension->OsData->SpinLock,
irql
);
status = WdfIoQueueRetrieveNextRequest(
DeviceExtension->NotificationQueue,
&request);
if (NT_SUCCESS(status)) {
SmartcardDebug(
DEBUG_DRIVER,
( "PSCR!CBUpdateCardState: Completing Irp %p\n",
notificationIrp)
);
WdfRequestCompleteWithInformation(request, status, 0);
}
else {
NT_ASSERTMSG("WdfIoQueueRetrieveNextRequest failed",
status == STATUS_NO_MORE_ENTRIES);
}
} else {
KeReleaseSpinLock(
&SmartcardExtension->OsData->SpinLock,
irql
);
}
SmartcardDebug(
DEBUG_TRACE,
( "PSCR!CBUpdateCardState: Exit \n" )
);
}
