/*
@implemented
*/
KSDDKAPI
NTSTATUS
NTAPI
KsValidateClockCreateRequest(
IN PIRP Irp,
OUT PKSCLOCK_CREATE* OutClockCreate)
{
PKSCLOCK_CREATE ClockCreate;
NTSTATUS Status;
ULONG Size;
/* minimum request size */
Size = sizeof(KSCLOCK_CREATE);
/* copy create request */
Status = KspCopyCreateRequest(Irp,
KSSTRING_Clock,
&Size,
(PVOID*)&ClockCreate);
if (!NT_SUCCESS(Status))
return Status;
if (ClockCreate->CreateFlags != 0)
{
/* flags must be zero */
FreeItem(ClockCreate);
return STATUS_INVALID_PARAMETER;
}
*OutClockCreate = ClockCreate;
return STATUS_SUCCESS;
}
/*
@implemented
*/
KSDDKAPI
NTSTATUS
NTAPI
KsValidateAllocatorCreateRequest(
IN PIRP Irp,
OUT PKSALLOCATOR_FRAMING* OutAllocatorFraming)
{
PKSALLOCATOR_FRAMING AllocatorFraming;
ULONG Size;
NTSTATUS Status;
ULONG SupportedFlags;
/* set minimum request size */
Size = sizeof(KSALLOCATOR_FRAMING);
Status = KspCopyCreateRequest(Irp,
KSSTRING_Allocator,
&Size,
(PVOID*)&AllocatorFraming);
if (!NT_SUCCESS(Status))
return Status;
/* allowed supported flags */
SupportedFlags = (KSALLOCATOR_OPTIONF_COMPATIBLE | KSALLOCATOR_OPTIONF_SYSTEM_MEMORY |
KSALLOCATOR_REQUIREMENTF_INPLACE_MODIFIER | KSALLOCATOR_REQUIREMENTF_SYSTEM_MEMORY | KSALLOCATOR_REQUIREMENTF_FRAME_INTEGRITY |
KSALLOCATOR_REQUIREMENTF_MUST_ALLOCATE);
if (!AllocatorFraming->FrameSize || (AllocatorFraming->OptionsFlags & (~SupportedFlags)))
{
FreeItem(AllocatorFraming);
return STATUS_INVALID_PARAMETER;
}
/* store result */
*OutAllocatorFraming = AllocatorFraming;
return Status;
}
/*
@implemented
*/
KSDDKAPI
NTSTATUS
NTAPI
KsValidateTopologyNodeCreateRequest(
IN PIRP Irp,
IN PKSTOPOLOGY Topology,
OUT PKSNODE_CREATE* OutNodeCreate)
{
PKSNODE_CREATE NodeCreate;
ULONG Size;
NTSTATUS Status;
/* did the caller miss the topology */
if (!Topology)
return STATUS_INVALID_PARAMETER;
/* set create param size */
Size = sizeof(KSNODE_CREATE);
/* fetch create parameters */
Status = KspCopyCreateRequest(Irp,
KSSTRING_TopologyNode,
&Size,
(PVOID*)&NodeCreate);
if (!NT_SUCCESS(Status))
return Status;
if (NodeCreate->CreateFlags != 0 || (NodeCreate->Node >= Topology->TopologyNodesCount && NodeCreate->Node != MAXULONG))
{
/* invalid node create */
FreeItem(NodeCreate);
return STATUS_UNSUCCESSFUL;
}
/* store result */
*OutNodeCreate = NodeCreate;
return Status;
}
NTSTATUS
KspValidateConnectRequest(
IN PIRP Irp,
IN ULONG DescriptorsCount,
IN PVOID Descriptors,
IN ULONG DescriptorSize,
OUT PKSPIN_CONNECT* Connect)
{
PKSPIN_CONNECT ConnectDetails;
PKSPIN_INTERFACE Interface;
PKSPIN_MEDIUM Medium;
ULONG Size;
NTSTATUS Status;
ULONG Index;
ULONG Count;
BOOLEAN Found;
PKSPIN_DESCRIPTOR Descriptor;
UNICODE_STRING GuidString2;
/* did the caller miss the connect parameter */
if (!Connect)
return STATUS_INVALID_PARAMETER;
/* set create param size */
Size = sizeof(KSPIN_CONNECT);
/* fetch create parameters */
Status = KspCopyCreateRequest(Irp,
KSSTRING_Pin,
&Size,
(PVOID*)&ConnectDetails);
/* check for success */
if (!NT_SUCCESS(Status))
return Status;
/* is pin id out of bounds */
if (ConnectDetails->PinId >= DescriptorsCount)
{
FreeItem(ConnectDetails);
return STATUS_INVALID_PARAMETER;
}
if (DescriptorSize == sizeof(KSPIN_DESCRIPTOR))
{
/* standard pin descriptor */
Descriptor = (PKSPIN_DESCRIPTOR)((ULONG_PTR)Descriptors + sizeof(KSPIN_DESCRIPTOR) * ConnectDetails->PinId);
}
else
{
/* extended / variable pin descriptor */
Descriptor = &((PKSPIN_DESCRIPTOR_EX)((ULONG_PTR)Descriptors + DescriptorSize * ConnectDetails->PinId))->PinDescriptor;
}
/* does the pin have interface details filled in */
if (Descriptor->InterfacesCount && Descriptor->Interfaces)
{
/* use provided pin interface count */
Count = Descriptor->InterfacesCount;
Interface = (PKSPIN_INTERFACE)Descriptor->Interfaces;
}
else
{
/* use standard pin interface */
Count = 1;
Interface = &StandardPinInterface;
}
/* now check the interface */
Found = FALSE;
Index = 0;
RtlStringFromGUID(&ConnectDetails->Interface.Set, &GuidString2);
do
{
UNICODE_STRING GuidString;
RtlStringFromGUID(&Interface[Index].Set, &GuidString);
DPRINT("Driver Interface %S Id %u\n", GuidString.Buffer, Interface[Index].Id);
DPRINT("Connect Interface %S Id %u\n", GuidString2.Buffer, ConnectDetails->Interface.Id);
RtlFreeUnicodeString(&GuidString);
if (IsEqualGUIDAligned(&Interface[Index].Set, &ConnectDetails->Interface.Set) &&
Interface[Index].Id == ConnectDetails->Interface.Id)
{
/* found a matching interface */
Found = TRUE;
break;
}
/* iterate to next interface */
Index++;
}while(Index < Count);
RtlFreeUnicodeString(&GuidString2);
if (!Found)
{
/* pin doesnt support this interface */
FreeItem(ConnectDetails);
return STATUS_NO_MATCH;
}
/* does the pin have medium details filled in */
if (Descriptor->MediumsCount && Descriptor->Mediums)
{
/* use provided pin interface count */
Count = Descriptor->MediumsCount;
Medium = (PKSPIN_MEDIUM)Descriptor->Mediums;
}
else
{
/* use standard pin interface */
Count = 1;
Medium = &StandardPinMedium;
}
/* now check the interface */
Found = FALSE;
Index = 0;
RtlStringFromGUID(&ConnectDetails->Medium.Set, &GuidString2);
do
{
UNICODE_STRING GuidString;
RtlStringFromGUID(&Medium[Index].Set, &GuidString);
DPRINT("Driver Medium %S Id %u\n", GuidString.Buffer, Medium[Index].Id);
DPRINT("Connect Medium %S Id %u\n", GuidString2.Buffer, ConnectDetails->Medium.Id);
RtlFreeUnicodeString(&GuidString);
if (IsEqualGUIDAligned(&Medium[Index].Set, &ConnectDetails->Medium.Set) &&
Medium[Index].Id == ConnectDetails->Medium.Id)
{
/* found a matching interface */
Found = TRUE;
break;
}
/* iterate to next medium */
Index++;
}while(Index < Count);
RtlFreeUnicodeString(&GuidString2);
if (!Found)
{
/* pin doesnt support this medium */
FreeItem(ConnectDetails);
return STATUS_NO_MATCH;
}
/// FIXME
/// implement format checking
*Connect = ConnectDetails;
return STATUS_SUCCESS;
}