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/*++
Copyright (c) Microsoft Corporation. All rights reserved
Abstract:
This file declares the utility/helper functions for use by the classify
functions and worker thread of the Transport Inspect sample.
Environment:
Kernel mode
--*/
#include <limits.h>
#ifndef _TL_INSPECT_UTILS_H_
#define _TL_INSPECT_UTILS_H_
__inline
ADDRESS_FAMILY GetAddressFamilyForLayer(
_In_ UINT16 layerId
)
{
ADDRESS_FAMILY addressFamily;
switch (layerId)
{
case FWPS_LAYER_ALE_AUTH_CONNECT_V4:
case FWPS_LAYER_ALE_AUTH_RECV_ACCEPT_V4:
case FWPS_LAYER_OUTBOUND_TRANSPORT_V4:
case FWPS_LAYER_INBOUND_TRANSPORT_V4:
addressFamily = AF_INET;
break;
case FWPS_LAYER_ALE_AUTH_CONNECT_V6:
case FWPS_LAYER_ALE_AUTH_RECV_ACCEPT_V6:
case FWPS_LAYER_OUTBOUND_TRANSPORT_V6:
case FWPS_LAYER_INBOUND_TRANSPORT_V6:
addressFamily = AF_INET6;
break;
default:
addressFamily = AF_UNSPEC;
NT_ASSERT(0);
}
return addressFamily;
}
__inline
FWP_DIRECTION GetPacketDirectionForLayer(
_In_ UINT16 layerId
)
{
FWP_DIRECTION direction;
switch (layerId)
{
case FWPS_LAYER_OUTBOUND_TRANSPORT_V4:
case FWPS_LAYER_OUTBOUND_TRANSPORT_V6:
direction = FWP_DIRECTION_OUTBOUND;
break;
case FWPS_LAYER_INBOUND_TRANSPORT_V4:
case FWPS_LAYER_INBOUND_TRANSPORT_V6:
direction = FWP_DIRECTION_INBOUND;
break;
default:
direction = FWP_DIRECTION_MAX;
NT_ASSERT(0);
}
return direction;
}
__inline
void
GetFlagsIndexesForLayer(
_In_ UINT16 layerId,
_Out_ UINT* flagsIndex
)
{
switch (layerId)
{
case FWPS_LAYER_ALE_AUTH_CONNECT_V4:
*flagsIndex = FWPS_FIELD_ALE_AUTH_CONNECT_V4_FLAGS;
break;
case FWPS_LAYER_ALE_AUTH_CONNECT_V6:
*flagsIndex = FWPS_FIELD_ALE_AUTH_CONNECT_V6_FLAGS;
break;
case FWPS_LAYER_ALE_AUTH_RECV_ACCEPT_V4:
*flagsIndex = FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V4_FLAGS;
break;
case FWPS_LAYER_ALE_AUTH_RECV_ACCEPT_V6:
*flagsIndex = FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V6_FLAGS;
break;
case FWPS_LAYER_OUTBOUND_TRANSPORT_V4:
*flagsIndex = FWPS_FIELD_OUTBOUND_TRANSPORT_V4_FLAGS;
break;
case FWPS_LAYER_OUTBOUND_TRANSPORT_V6:
*flagsIndex = FWPS_FIELD_OUTBOUND_TRANSPORT_V6_FLAGS;
break;
case FWPS_LAYER_INBOUND_TRANSPORT_V4:
*flagsIndex = FWPS_FIELD_INBOUND_TRANSPORT_V4_FLAGS;
break;
case FWPS_LAYER_INBOUND_TRANSPORT_V6:
*flagsIndex = FWPS_FIELD_INBOUND_TRANSPORT_V6_FLAGS;
break;
default:
*flagsIndex = UINT_MAX;
NT_ASSERT(0);
break;
}
}
__inline
void
GetDeliveryInterfaceIndexesForLayer(
_In_ UINT16 layerId,
_Out_ UINT* interfaceIndexIndex,
_Out_ UINT* subInterfaceIndexIndex
)
{
*interfaceIndexIndex = 0;
*subInterfaceIndexIndex = 0;
switch (layerId)
{
case FWPS_LAYER_ALE_AUTH_CONNECT_V4:
*interfaceIndexIndex =
FWPS_FIELD_ALE_AUTH_CONNECT_V4_INTERFACE_INDEX;
*subInterfaceIndexIndex =
FWPS_FIELD_ALE_AUTH_CONNECT_V4_SUB_INTERFACE_INDEX;
break;
case FWPS_LAYER_ALE_AUTH_CONNECT_V6:
*interfaceIndexIndex =
FWPS_FIELD_ALE_AUTH_CONNECT_V6_INTERFACE_INDEX;
*subInterfaceIndexIndex =
FWPS_FIELD_ALE_AUTH_CONNECT_V6_SUB_INTERFACE_INDEX;
break;
case FWPS_LAYER_ALE_AUTH_RECV_ACCEPT_V4:
*interfaceIndexIndex =
FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V4_INTERFACE_INDEX;
*subInterfaceIndexIndex =
FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V4_SUB_INTERFACE_INDEX;
break;
case FWPS_LAYER_ALE_AUTH_RECV_ACCEPT_V6:
*interfaceIndexIndex =
FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V6_INTERFACE_INDEX;
*subInterfaceIndexIndex =
FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V6_SUB_INTERFACE_INDEX;
break;
case FWPS_LAYER_INBOUND_TRANSPORT_V4:
*interfaceIndexIndex =
FWPS_FIELD_INBOUND_TRANSPORT_V4_INTERFACE_INDEX;
*subInterfaceIndexIndex =
FWPS_FIELD_INBOUND_TRANSPORT_V4_SUB_INTERFACE_INDEX;
break;
case FWPS_LAYER_INBOUND_TRANSPORT_V6:
*interfaceIndexIndex =
FWPS_FIELD_INBOUND_TRANSPORT_V6_INTERFACE_INDEX;
*subInterfaceIndexIndex =
FWPS_FIELD_INBOUND_TRANSPORT_V6_SUB_INTERFACE_INDEX;
break;
default:
NT_ASSERT(0);
break;
}
}
__inline
void
GetNetwork5TupleIndexesForLayer(
_In_ UINT16 layerId,
_Out_ UINT* localAddressIndex,
_Out_ UINT* remoteAddressIndex,
_Out_ UINT* localPortIndex,
_Out_ UINT* remotePortIndex,
_Out_ UINT* protocolIndex
)
{
switch (layerId)
{
case FWPS_LAYER_ALE_AUTH_CONNECT_V4:
*localAddressIndex = FWPS_FIELD_ALE_AUTH_CONNECT_V4_IP_LOCAL_ADDRESS;
*remoteAddressIndex = FWPS_FIELD_ALE_AUTH_CONNECT_V4_IP_REMOTE_ADDRESS;
*localPortIndex = FWPS_FIELD_ALE_AUTH_CONNECT_V4_IP_LOCAL_PORT;
*remotePortIndex = FWPS_FIELD_ALE_AUTH_CONNECT_V4_IP_REMOTE_PORT;
*protocolIndex = FWPS_FIELD_ALE_AUTH_CONNECT_V4_IP_PROTOCOL;
break;
case FWPS_LAYER_ALE_AUTH_CONNECT_V6:
*localAddressIndex = FWPS_FIELD_ALE_AUTH_CONNECT_V6_IP_LOCAL_ADDRESS;
*remoteAddressIndex = FWPS_FIELD_ALE_AUTH_CONNECT_V6_IP_REMOTE_ADDRESS;
*localPortIndex = FWPS_FIELD_ALE_AUTH_CONNECT_V6_IP_LOCAL_PORT;
*remotePortIndex = FWPS_FIELD_ALE_AUTH_CONNECT_V6_IP_REMOTE_PORT;
*protocolIndex = FWPS_FIELD_ALE_AUTH_CONNECT_V6_IP_PROTOCOL;
break;
case FWPS_LAYER_ALE_AUTH_RECV_ACCEPT_V4:
*localAddressIndex = FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V4_IP_LOCAL_ADDRESS;
*remoteAddressIndex = FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V4_IP_REMOTE_ADDRESS;
*localPortIndex = FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V4_IP_LOCAL_PORT;
*remotePortIndex = FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V4_IP_REMOTE_PORT;
*protocolIndex = FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V4_IP_PROTOCOL;
break;
case FWPS_LAYER_ALE_AUTH_RECV_ACCEPT_V6:
*localAddressIndex = FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V6_IP_LOCAL_ADDRESS;
*remoteAddressIndex = FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V6_IP_REMOTE_ADDRESS;
*localPortIndex = FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V6_IP_LOCAL_PORT;
*remotePortIndex = FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V6_IP_REMOTE_PORT;
*protocolIndex = FWPS_FIELD_ALE_AUTH_RECV_ACCEPT_V6_IP_PROTOCOL;
break;
case FWPS_LAYER_OUTBOUND_TRANSPORT_V4:
*localAddressIndex = FWPS_FIELD_OUTBOUND_TRANSPORT_V4_IP_LOCAL_ADDRESS;
*remoteAddressIndex = FWPS_FIELD_OUTBOUND_TRANSPORT_V4_IP_REMOTE_ADDRESS;
*localPortIndex = FWPS_FIELD_OUTBOUND_TRANSPORT_V4_IP_LOCAL_PORT;
*remotePortIndex = FWPS_FIELD_OUTBOUND_TRANSPORT_V4_IP_REMOTE_PORT;
*protocolIndex = FWPS_FIELD_OUTBOUND_TRANSPORT_V4_IP_PROTOCOL;
break;
case FWPS_LAYER_OUTBOUND_TRANSPORT_V6:
*localAddressIndex = FWPS_FIELD_OUTBOUND_TRANSPORT_V6_IP_LOCAL_ADDRESS;
*remoteAddressIndex = FWPS_FIELD_OUTBOUND_TRANSPORT_V6_IP_REMOTE_ADDRESS;
*localPortIndex = FWPS_FIELD_OUTBOUND_TRANSPORT_V6_IP_LOCAL_PORT;
*remotePortIndex = FWPS_FIELD_OUTBOUND_TRANSPORT_V6_IP_REMOTE_PORT;
*protocolIndex = FWPS_FIELD_OUTBOUND_TRANSPORT_V6_IP_PROTOCOL;
break;
case FWPS_LAYER_INBOUND_TRANSPORT_V4:
*localAddressIndex = FWPS_FIELD_INBOUND_TRANSPORT_V4_IP_LOCAL_ADDRESS;
*remoteAddressIndex = FWPS_FIELD_INBOUND_TRANSPORT_V4_IP_REMOTE_ADDRESS;
*localPortIndex = FWPS_FIELD_INBOUND_TRANSPORT_V4_IP_LOCAL_PORT;
*remotePortIndex = FWPS_FIELD_INBOUND_TRANSPORT_V4_IP_REMOTE_PORT;
*protocolIndex = FWPS_FIELD_INBOUND_TRANSPORT_V4_IP_PROTOCOL;
break;
case FWPS_LAYER_INBOUND_TRANSPORT_V6:
*localAddressIndex = FWPS_FIELD_INBOUND_TRANSPORT_V6_IP_LOCAL_ADDRESS;
*remoteAddressIndex = FWPS_FIELD_INBOUND_TRANSPORT_V6_IP_REMOTE_ADDRESS;
*localPortIndex = FWPS_FIELD_INBOUND_TRANSPORT_V6_IP_LOCAL_PORT;
*remotePortIndex = FWPS_FIELD_INBOUND_TRANSPORT_V6_IP_REMOTE_PORT;
*protocolIndex = FWPS_FIELD_INBOUND_TRANSPORT_V6_IP_PROTOCOL;
break;
default:
*localAddressIndex = UINT_MAX;
*remoteAddressIndex = UINT_MAX;
*localPortIndex = UINT_MAX;
*remotePortIndex = UINT_MAX;
*protocolIndex = UINT_MAX;
NT_ASSERT(0);
}
}
BOOLEAN IsAleReauthorize(
_In_ const FWPS_INCOMING_VALUES* inFixedValues
);
BOOLEAN IsSecureConnection(
_In_ const FWPS_INCOMING_VALUES* inFixedValues
);
BOOLEAN
IsAleClassifyRequired(
_In_ const FWPS_INCOMING_VALUES* inFixedValues,
_In_ const FWPS_INCOMING_METADATA_VALUES* inMetaValues
);
void
FillNetwork5Tuple(
_In_ const FWPS_INCOMING_VALUES* inFixedValues,
_In_ ADDRESS_FAMILY addressFamily,
_Inout_ TL_INSPECT_PENDED_PACKET* packet
);
BOOLEAN
IsMatchingConnectPacket(
_In_ const FWPS_INCOMING_VALUES* inFixedValues,
_In_ ADDRESS_FAMILY addressFamily,
_In_ FWP_DIRECTION direction,
_Inout_ TL_INSPECT_PENDED_PACKET* pendedPacket
);
__drv_allocatesMem(Mem)
TL_INSPECT_PENDED_PACKET*
AllocateAndInitializePendedPacket(
_In_ const FWPS_INCOMING_VALUES* inFixedValues,
_In_ const FWPS_INCOMING_METADATA_VALUES* inMetaValues,
_In_ ADDRESS_FAMILY addressFamily,
_Inout_opt_ void* layerData,
_In_ TL_INSPECT_PACKET_TYPE packetType,
_In_ FWP_DIRECTION packetDirection
);
void
FreePendedPacket(
_Inout_ __drv_freesMem(Mem) TL_INSPECT_PENDED_PACKET* packet
);
BOOLEAN
IsTrafficPermitted(void);
#endif // _TL_INSPECT_UTILS_H_
|
