Wfp.cs

using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;

namespace Wfp
{
  /// PInvoke wrappers for Windows Filtering Platform
	public class WfpNativeInterop
	{
		public enum FWP_DIRECTION_
		{
			/// FWP_DIRECTION_OUTBOUND -> 0
			FWP_DIRECTION_OUTBOUND = 0,

			/// FWP_DIRECTION_INBOUND -> 1
			FWP_DIRECTION_INBOUND = 1,

			/// FWP_DIRECTION_MAX -> 2
			FWP_DIRECTION_MAX = 2,
		}

		public enum FWP_IP_VERSION_
		{
			/// FWP_IP_VERSION_V4 -> 0
			FWP_IP_VERSION_V4 = 0,

			/// FWP_IP_VERSION_V6 -> 1
			FWP_IP_VERSION_V6 = 1,

			/// FWP_IP_VERSION_NONE -> 2
			FWP_IP_VERSION_NONE = 2,

			/// FWP_IP_VERSION_MAX -> 3
			FWP_IP_VERSION_MAX = 3,
		}

		public enum FWP_NE_FAMILY_
		{
			/// FWP_AF_INET -> FWP_IP_VERSION_V4
			FWP_AF_INET = FWP_IP_VERSION_.FWP_IP_VERSION_V4,

			/// FWP_AF_INET6 -> FWP_IP_VERSION_V6
			FWP_AF_INET6 = FWP_IP_VERSION_.FWP_IP_VERSION_V6,

			/// FWP_AF_ETHER -> FWP_IP_VERSION_NONE
			FWP_AF_ETHER = FWP_IP_VERSION_.FWP_IP_VERSION_NONE,

			/// FWP_AF_NONE -> 3
			FWP_AF_NONE = 3,
		}

		public enum FWP_ETHER_ENCAP_METHOD_
		{
			/// FWP_ETHER_ENCAP_METHOD_ETHER_V2 -> 0
			FWP_ETHER_ENCAP_METHOD_ETHER_V2 = 0,

			/// FWP_ETHER_ENCAP_METHOD_SNAP -> 1
			FWP_ETHER_ENCAP_METHOD_SNAP = 1,

			/// FWP_ETHER_ENCAP_METHOD_SNAP_W_OUI_ZERO -> 3
			FWP_ETHER_ENCAP_METHOD_SNAP_W_OUI_ZERO = 3,
		}

		public enum FWP_DATA_TYPE_
		{
			/// FWP_EMPTY -> 0
			FWP_EMPTY = 0,

			/// FWP_UINT8 -> 1
			FWP_UINT8 = 1,

			/// FWP_UINT16 -> 2
			FWP_UINT16 = 2,

			/// FWP_UINT32 -> 3
			FWP_UINT32 = 3,

			/// FWP_UINT64 -> 4
			FWP_UINT64 = 4,

			/// FWP_INT8 -> 5
			FWP_INT8 = 5,

			/// FWP_INT16 -> 6
			FWP_INT16 = 6,

			/// FWP_INT32 -> 7
			FWP_INT32 = 7,

			/// FWP_INT64 -> 8
			FWP_INT64 = 8,

			/// FWP_FLOAT -> 9
			FWP_FLOAT = 9,

			/// FWP_DOUBLE -> 10
			FWP_DOUBLE = 10,

			/// FWP_BYTE_ARRAY16_TYPE -> 11
			FWP_BYTE_ARRAY16_TYPE = 11,

			/// FWP_BYTE_BLOB_TYPE -> 12
			FWP_BYTE_BLOB_TYPE = 12,

			/// FWP_SID -> 13
			FWP_SID = 13,

			/// FWP_SECURITY_DESCRIPTOR_TYPE -> 14
			FWP_SECURITY_DESCRIPTOR_TYPE = 14,

			/// FWP_TOKEN_INFORMATION_TYPE -> 15
			FWP_TOKEN_INFORMATION_TYPE = 15,

			/// FWP_TOKEN_ACCESS_INFORMATION_TYPE -> 16
			FWP_TOKEN_ACCESS_INFORMATION_TYPE = 16,

			/// FWP_UNICODE_STRING_TYPE -> 17
			FWP_UNICODE_STRING_TYPE = 17,

			/// FWP_BYTE_ARRAY6_TYPE -> 18
			FWP_BYTE_ARRAY6_TYPE = 18,

			/// FWP_SINGLE_DATA_TYPE_MAX -> 0xff
			FWP_SINGLE_DATA_TYPE_MAX = 255,

			/// FWP_V4_ADDR_MASK -> 0x100
			FWP_V4_ADDR_MASK = 256,

			/// FWP_V6_ADDR_MASK -> 0x101
			FWP_V6_ADDR_MASK = 257,

			/// FWP_RANGE_TYPE -> 0x102
			FWP_RANGE_TYPE = 258,

			/// FWP_DATA_TYPE_MAX -> 0x103
			FWP_DATA_TYPE_MAX = 259,
		}

		public enum FWP_MATCH_TYPE_
		{
			/// FWP_MATCH_EQUAL -> 0
			FWP_MATCH_EQUAL = 0,

			/// FWP_MATCH_GREATER -> 1
			FWP_MATCH_GREATER = 1,

			/// FWP_MATCH_LESS -> 2
			FWP_MATCH_LESS = 2,

			/// FWP_MATCH_GREATER_OR_EQUAL -> 3
			FWP_MATCH_GREATER_OR_EQUAL = 3,

			/// FWP_MATCH_LESS_OR_EQUAL -> 4
			FWP_MATCH_LESS_OR_EQUAL = 4,

			/// FWP_MATCH_RANGE -> 5
			FWP_MATCH_RANGE = 5,

			/// FWP_MATCH_FLAGS_ALL_SET -> 6
			FWP_MATCH_FLAGS_ALL_SET = 6,

			/// FWP_MATCH_FLAGS_ANY_SET -> 7
			FWP_MATCH_FLAGS_ANY_SET = 7,

			/// FWP_MATCH_FLAGS_NONE_SET -> 8
			FWP_MATCH_FLAGS_NONE_SET = 8,

			/// FWP_MATCH_EQUAL_CASE_INSENSITIVE -> 9
			FWP_MATCH_EQUAL_CASE_INSENSITIVE = 9,

			/// FWP_MATCH_NOT_EQUAL -> 10
			FWP_MATCH_NOT_EQUAL = 10,

			/// FWP_MATCH_TYPE_MAX -> 11
			FWP_MATCH_TYPE_MAX = 11,
		}

		public enum FWP_VSWITCH_NETWORK_TYPE_
		{
			/// FWP_VSWITCH_NETWORK_TYPE_UNKNOWN -> 0
			FWP_VSWITCH_NETWORK_TYPE_UNKNOWN = 0,

			/// FWP_VSWITCH_NETWORK_TYPE_PRIVATE -> 1
			FWP_VSWITCH_NETWORK_TYPE_PRIVATE = 1,

			/// FWP_VSWITCH_NETWORK_TYPE_INTERNAL -> 2
			FWP_VSWITCH_NETWORK_TYPE_INTERNAL = 2,

			/// FWP_VSWITCH_NETWORK_TYPE_EXTERNAL -> 3
			FWP_VSWITCH_NETWORK_TYPE_EXTERNAL = 3,
		}

		public enum FWP_CLASSIFY_OPTION_TYPE_
		{
			/// FWP_CLASSIFY_OPTION_MULTICAST_STATE -> 0
			FWP_CLASSIFY_OPTION_MULTICAST_STATE = 0,

			/// FWP_CLASSIFY_OPTION_LOOSE_SOURCE_MAPPING -> 1
			FWP_CLASSIFY_OPTION_LOOSE_SOURCE_MAPPING = 1,

			/// FWP_CLASSIFY_OPTION_UNICAST_LIFETIME -> 2
			FWP_CLASSIFY_OPTION_UNICAST_LIFETIME = 2,

			/// FWP_CLASSIFY_OPTION_MCAST_BCAST_LIFETIME -> 3
			FWP_CLASSIFY_OPTION_MCAST_BCAST_LIFETIME = 3,

			/// FWP_CLASSIFY_OPTION_SECURE_SOCKET_SECURITY_FLAGS -> 4
			FWP_CLASSIFY_OPTION_SECURE_SOCKET_SECURITY_FLAGS = 4,

			/// FWP_CLASSIFY_OPTION_SECURE_SOCKET_AUTHIP_MM_POLICY_KEY -> 5
			FWP_CLASSIFY_OPTION_SECURE_SOCKET_AUTHIP_MM_POLICY_KEY = 5,

			/// FWP_CLASSIFY_OPTION_SECURE_SOCKET_AUTHIP_QM_POLICY_KEY -> 6
			FWP_CLASSIFY_OPTION_SECURE_SOCKET_AUTHIP_QM_POLICY_KEY = 6,

			/// FWP_CLASSIFY_OPTION_LOCAL_ONLY_MAPPING -> 7
			FWP_CLASSIFY_OPTION_LOCAL_ONLY_MAPPING = 7,

			/// FWP_CLASSIFY_OPTION_MAX -> 8
			FWP_CLASSIFY_OPTION_MAX = 8,
		}

		public enum FWP_FILTER_ENUM_TYPE_
		{
			/// FWP_FILTER_ENUM_FULLY_CONTAINED -> 0
			FWP_FILTER_ENUM_FULLY_CONTAINED = 0,

			/// FWP_FILTER_ENUM_OVERLAPPING -> 1
			FWP_FILTER_ENUM_OVERLAPPING = 1,

			/// FWP_FILTER_ENUM_TYPE_MAX -> 2
			FWP_FILTER_ENUM_TYPE_MAX = 2,
		}


		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
		public struct FWPM_DISPLAY_DATA0_
		{
			/// wchar_t*
			[System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.LPWStr)]
			public string name;

			/// wchar_t*
			[System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.LPWStr)]
			public string description;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
		public struct FWP_BYTE_BLOB_
		{
			/// UINT32->int
			public int size;

			/// UINT8*
			[System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.LPStr)]
			public string data;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential, CharSet = System.Runtime.InteropServices.CharSet.Ansi)]
		public struct FWP_BYTE_ARRAY6_
		{
			/// UINT8[6]
			[System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.ByValTStr, SizeConst = 6)]
			public string byteArray6;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential, CharSet = System.Runtime.InteropServices.CharSet.Ansi)]
		public struct FWP_BYTE_ARRAY16_
		{
			/// UINT8[16]
			[System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.ByValTStr, SizeConst = 16)]
			public string byteArray16;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
		public struct FWP_TOKEN_INFORMATION
		{
			/// ULONG->int
			public int sidCount;

			/// PSID_AND_ATTRIBUTES->_SID_AND_ATTRIBUTES*
			public System.IntPtr sids;

			/// ULONG->int
			public int restrictedSidCount;

			/// PSID_AND_ATTRIBUTES->_SID_AND_ATTRIBUTES*
			public System.IntPtr restrictedSids;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
		public struct FWP_V4_ADDR_AND_MASK_
		{
			/// UINT32->int
			public int addr;

			/// UINT32->int
			public int mask;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential, CharSet = System.Runtime.InteropServices.CharSet.Ansi)]
		public struct FWP_V6_ADDR_AND_MASK_
		{
			/// UINT8[0]
			[System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.ByValTStr, SizeConst = 0)]
			public string addr;

			/// UINT8->char
			public byte prefixLength;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Explicit)]
		public struct Anonymous_750df4da_d850_4fa1_a0b8_aefa57daeefd
		{
			/// UINT8->char
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public byte uint8;

			/// UINT16->short
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public short uint16;

			/// UINT32->int
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public int uint32;

			/// UINT64*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr uint64;

			/// INT8->char
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public byte int8;

			/// INT16->short
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public short int16;

			/// INT32->int
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public int int32;

			/// INT64*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr int64;

			/// float
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public float float32;

			/// double*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr double64;

			/// FWP_BYTE_ARRAY16*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr byteArray16;

			/// FWP_BYTE_BLOB*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr byteBlob;

			/// SID*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr sid;

			/// FWP_BYTE_BLOB*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr sd;

			/// FWP_TOKEN_INFORMATION*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr tokenInformation;

			/// FWP_BYTE_BLOB*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr tokenAccessInformation;

			/// LPWSTR->WCHAR*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr unicodeString;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
		public struct FWP_VALUE0_
		{
			/// FWP_DATA_TYPE->FWP_DATA_TYPE_
			public FWP_DATA_TYPE_ type;

			/// Anonymous_750df4da_d850_4fa1_a0b8_aefa57daeefd
			public Anonymous_750df4da_d850_4fa1_a0b8_aefa57daeefd Union1;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
		public struct FWP_RANGE0_
		{
			/// FWP_VALUE0->FWP_VALUE0_
			public FWP_VALUE0_ valueLow;

			/// FWP_VALUE0->FWP_VALUE0_
			public FWP_VALUE0_ valueHigh;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Explicit)]
		public struct Anonymous_bf22c1aa_535d_4df6_af7c_2f1c9e645897
		{
			/// GUID->_GUID
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public Guid filterType;

			/// GUID->_GUID
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public Guid calloutKey;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
		public struct FWPM_ACTION0_
		{
			/// FWP_ACTION_TYPE->UINT32->int
			public int type;

			/// Anonymous_bf22c1aa_535d_4df6_af7c_2f1c9e645897
			public Anonymous_bf22c1aa_535d_4df6_af7c_2f1c9e645897 Union1;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Explicit)]
		public struct Anonymous_99707a60_90d9_473c_951b_97fea591b664
		{
			/// UINT8->char
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public byte uint8;

			/// UINT16->short
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public short uint16;

			/// UINT32->int
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public int uint32;

			/// UINT64*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr uint64;

			/// INT8->char
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public byte int8;

			/// INT16->short
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public short int16;

			/// INT32->int
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public int int32;

			/// INT64*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr int64;

			/// float
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public float float32;

			/// double*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr double64;

			/// FWP_BYTE_ARRAY16*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr byteArray16;

			/// FWP_BYTE_BLOB*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr byteBlob;

			/// SID*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr sid;

			/// FWP_BYTE_BLOB*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr sd;

			/// FWP_BYTE_BLOB*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr tokenInformation;

			/// FWP_BYTE_BLOB*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr tokenAccessInformation;

			/// LPWSTR->WCHAR*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr unicodeString;

			/// FWP_BYTE_ARRAY6*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr byteArray6;

			/// FWP_V4_ADDR_AND_MASK*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr v4AddrMask;

			/// FWP_V6_ADDR_AND_MASK*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr v6AddrMask;

			/// FWP_RANGE0*
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public System.IntPtr rangeValue;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
		public struct FWP_CONDITION_VALUE0_
		{
			/// FWP_DATA_TYPE->FWP_DATA_TYPE_
			public FWP_DATA_TYPE_ type;

			/// Anonymous_99707a60_90d9_473c_951b_97fea591b664
			public Anonymous_99707a60_90d9_473c_951b_97fea591b664 Union1;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
		public struct FWPM_FILTER_CONDITION0_
		{
			/// GUID->_GUID
			public Guid fieldKey;

			/// FWP_MATCH_TYPE->FWP_MATCH_TYPE_
			public FWP_MATCH_TYPE_ matchType;

			/// FWP_CONDITION_VALUE0->FWP_CONDITION_VALUE0_
			public FWP_CONDITION_VALUE0_ conditionValue;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Explicit)]
		public struct Anonymous_cb34be57_1743_4fbd_bd83_ab14b1cf7ace
		{
			/// UINT64->__int64
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public long rawContext;

			/// GUID->_GUID
			[System.Runtime.InteropServices.FieldOffsetAttribute(0)]
			public Guid providerContextKey;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
		public struct FWPM_FILTER0_
		{
			/// GUID->_GUID
			public Guid filterKey;

			/// FWPM_DISPLAY_DATA0->FWPM_DISPLAY_DATA0_
			public FWPM_DISPLAY_DATA0_ displayData;

			/// UINT32->int
			public int flags;

			/// GUID*
			public Guid* providerKey;

			/// FWP_BYTE_BLOB->FWP_BYTE_BLOB_
			public FWP_BYTE_BLOB_ providerData;

			/// GUID->_GUID
			public Guid layerKey;

			/// GUID->_GUID
			public Guid subLayerKey;

			/// FWP_VALUE0->FWP_VALUE0_
			public FWP_VALUE0_ weight;

			/// UINT32->int
			public int numFilterConditions;

			/// FWPM_FILTER_CONDITION0*
			public FWPM_FILTER_CONDITION0_* filterCondition;

			/// FWPM_ACTION0->FWPM_ACTION0_
			public FWPM_ACTION0_ action;

			/// Anonymous_cb34be57_1743_4fbd_bd83_ab14b1cf7ace
			public Anonymous_cb34be57_1743_4fbd_bd83_ab14b1cf7ace Union1;

			/// GUID*
			public Guid* reserved;

			/// UINT64->__int64
			public long filterId;

			/// FWP_VALUE0->FWP_VALUE0_
			public FWP_VALUE0_ effectiveWeight;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
		public struct FWPM_SUBLAYER0_
		{
			/// GUID->_GUID
			public Guid subLayerKey;

			/// FWPM_DISPLAY_DATA0->FWPM_DISPLAY_DATA0_
			public FWPM_DISPLAY_DATA0_ displayData;

			/// UINT32->int
			public int flags;

			/// GUID*
			public Guid* providerKey;

			/// FWP_BYTE_BLOB->FWP_BYTE_BLOB_
			public FWP_BYTE_BLOB_ providerData;

			/// UINT16->short
			public short weight;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
		public struct SECURITY_DESCRIPTOR_
		{
			/// BYTE->char
			public byte Revision;

			/// BYTE->char
			public byte Sbz1;

			/// SECURITY_DESCRIPTOR_CONTROL->WORD->short
			public short Control;

			/// PSID->PVOID->void*
			public System.IntPtr Owner;

			/// PSID->PVOID->void*
			public System.IntPtr Group;

			/// PACL->ACL*
			public System.IntPtr Sacl;

			/// PACL->ACL*
			public System.IntPtr Dacl;
		}

		[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
		public struct FWPM_CALLOUT0_
		{
			public Guid calloutKey;
			public FWPM_DISPLAY_DATA0_ displayData;
			public uint flags;
			public Guid* providerKey; // _GUID
			public FWP_BYTE_BLOB_ providerData;
			public Guid applicableLayer;
			public uint calloutId;
		}

		// authnservice = 10 or uint.MaxValue, pass null for the other inputs
		[System.Runtime.InteropServices.DllImportAttribute("FWPUClnt.dll", EntryPoint = "FwpmEngineOpen0")]
		public static extern uint FwpmEngineOpen0([System.Runtime.InteropServices.InAttribute()] [System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.LPWStr)] string serverName, uint authnService, [System.Runtime.InteropServices.InAttribute()] System.IntPtr authIdentity, [System.Runtime.InteropServices.InAttribute()] System.IntPtr session, ref System.IntPtr engineHandle);

		[System.Runtime.InteropServices.DllImportAttribute("FWPUClnt.dll", EntryPoint = "FwpmEngineClose0")]
		public static extern uint FwpmEngineClose0(IntPtr handle);

		// flags = 1 means read only transaction, flags of 0 is read/write transaction
		[System.Runtime.InteropServices.DllImportAttribute("FWPUClnt.dll", EntryPoint = "FwpmTransactionBegin0")]
		public static extern uint FwpmTransactionBegin0(IntPtr engineHandle, uint flags);

		[System.Runtime.InteropServices.DllImportAttribute("FWPUClnt.dll", EntryPoint = "FwpmTransactionCommit0")]
		public static extern uint FwpmTransactionCommit0(IntPtr engineHandle);

		[System.Runtime.InteropServices.DllImportAttribute("FWPUClnt.dll", EntryPoint = "FwpmFilterAdd0")]
		public static extern uint FwpmFilterAdd0(IntPtr engineHandle, ref FWPM_FILTER0_ filter, ref SECURITY_DESCRIPTOR_ sd, ref IntPtr id);

		[System.Runtime.InteropServices.DllImportAttribute("FWPUClnt.dll", EntryPoint = "FwpmFilterDeleteById0")]
		public static extern uint FwpmFilterDeleteById0(IntPtr engineHandle, IntPtr id);

		[System.Runtime.InteropServices.DllImportAttribute("FWPUClnt.dll", EntryPoint = "FwpmFilterDeleteByKey0")]
		public static extern uint FwpmFilterDeleteByKey0(IntPtr engineHandle, ref Guid key);

		[System.Runtime.InteropServices.DllImportAttribute("FWPUClnt.dll", EntryPoint = "FwpmSubLayerAdd0")]
		public static extern uint FwpmSubLayerAdd0([System.Runtime.InteropServices.InAttribute()] System.IntPtr engineHandle, [System.Runtime.InteropServices.InAttribute()] ref FWPM_SUBLAYER0_ subLayer, [System.Runtime.InteropServices.InAttribute()] System.IntPtr sd);

		[System.Runtime.InteropServices.DllImportAttribute("FWPUClnt.dll", EntryPoint = "FwpmSubLayerDeleteByKey0")]
		public static extern uint FwpmSubLayerDeleteByKey0(IntPtr engineHandle, ref Guid key);

		[System.Runtime.InteropServices.DllImportAttribute("FWPUClnt.dll", EntryPoint = "FwpmCalloutAdd0")]
		public static extern uint FwpmCalloutAdd0(IntPtr engineHandle, ref FWPM_CALLOUT0_ callout, ref SECURITY_DESCRIPTOR_ sd, ref IntPtr id);

		[System.Runtime.InteropServices.DllImportAttribute("FWPUClnt.dll", EntryPoint = "FwpmCalloutDeleteById0")]
		public static extern uint FwpmCalloutDeleteById0(IntPtr engineHandle, uint id);
	}
}