firewall: introduce incomplete untested prototype

This doesn't support NDP yet, and some major things are still left to be
decided, but this is the beginning of something that can be debugged
into shape.

Signed-off-by: Odd Stranne <odd@mullvad.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Aleksandar Pesic <peske.nis@gmail.com>

1 files changed, 417 insertions, 0 deletions

diff --git a/service/firewall/types_windows.go b/service/firewall/types_windows.go
new file mode 100644
index 00000000..1d28772d
--- /dev/null
+++ b/service/firewall/types_windows.go
@@ -0,0 +1,417 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
+ */
+
+package firewall
+
+import "golang.org/x/sys/windows"
+
+const (
+	anysizeArray = 1 // ANYSIZE_ARRAY defined in winnt.h
+
+	wtFwpBitmapArray64_Size = 8
+
+	wtFwpByteArray16_Size = 16
+
+	wtFwpByteArray6_Size = 6
+
+	wtFwpmAction0_Size = 20
+
+	wtFwpmAction0_filterType_Offset = 4
+
+	wtFwpV4AddrAndMask_Size = 8
+
+	wtFwpV4AddrAndMask_mask_Offset = 4
+
+	wtFwpV6AddrAndMask_Size = 17
+
+	wtFwpV6AddrAndMask_prefixLength_Offset = 16
+)
+
+type wtFwpActionFlag uint32
+
+const (
+	cFWP_ACTION_FLAG_TERMINATING     wtFwpActionFlag = 0x00001000
+	cFWP_ACTION_FLAG_NON_TERMINATING wtFwpActionFlag = 0x00002000
+	cFWP_ACTION_FLAG_CALLOUT         wtFwpActionFlag = 0x00004000
+)
+
+// FWP_ACTION_TYPE defined in fwptypes.h
+type wtFwpActionType uint32
+
+const (
+	cFWP_ACTION_BLOCK               wtFwpActionType = wtFwpActionType(0x00000001 | cFWP_ACTION_FLAG_TERMINATING)
+	cFWP_ACTION_PERMIT              wtFwpActionType = wtFwpActionType(0x00000002 | cFWP_ACTION_FLAG_TERMINATING)
+	cFWP_ACTION_CALLOUT_TERMINATING wtFwpActionType = wtFwpActionType(0x00000003 | cFWP_ACTION_FLAG_CALLOUT | cFWP_ACTION_FLAG_TERMINATING)
+	cFWP_ACTION_CALLOUT_INSPECTION  wtFwpActionType = wtFwpActionType(0x00000004 | cFWP_ACTION_FLAG_CALLOUT | cFWP_ACTION_FLAG_NON_TERMINATING)
+	cFWP_ACTION_CALLOUT_UNKNOWN     wtFwpActionType = wtFwpActionType(0x00000005 | cFWP_ACTION_FLAG_CALLOUT)
+	cFWP_ACTION_CONTINUE            wtFwpActionType = wtFwpActionType(0x00000006 | cFWP_ACTION_FLAG_NON_TERMINATING)
+	//wtFWP_ACTION_NONE                wtFwpActionType = 0x00000007
+	//wtFWP_ACTION_NONE_NO_MATCH       wtFwpActionType = 0x00000008
+	//wtFWP_ACTION_BITMAP_INDEX_SET    wtFwpActionType = 0x00000009
+)
+
+// FWP_BYTE_BLOB defined in fwptypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwptypes/ns-fwptypes-fwp_byte_blob_)
+type wtFwpByteBlob struct {
+	size uint32
+	data *uint8
+}
+
+// FWP_MATCH_TYPE defined in fwptypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwptypes/ne-fwptypes-fwp_match_type_)
+type wtFwpMatchType uint32
+
+const (
+	cFWP_MATCH_EQUAL                  wtFwpMatchType = 0
+	cFWP_MATCH_GREATER                wtFwpMatchType = cFWP_MATCH_EQUAL + 1
+	cFWP_MATCH_LESS                   wtFwpMatchType = cFWP_MATCH_GREATER + 1
+	cFWP_MATCH_GREATER_OR_EQUAL       wtFwpMatchType = cFWP_MATCH_LESS + 1
+	cFWP_MATCH_LESS_OR_EQUAL          wtFwpMatchType = cFWP_MATCH_GREATER_OR_EQUAL + 1
+	cFWP_MATCH_RANGE                  wtFwpMatchType = cFWP_MATCH_LESS_OR_EQUAL + 1
+	cFWP_MATCH_FLAGS_ALL_SET          wtFwpMatchType = cFWP_MATCH_RANGE + 1
+	cFWP_MATCH_FLAGS_ANY_SET          wtFwpMatchType = cFWP_MATCH_FLAGS_ALL_SET + 1
+	cFWP_MATCH_FLAGS_NONE_SET         wtFwpMatchType = cFWP_MATCH_FLAGS_ANY_SET + 1
+	cFWP_MATCH_EQUAL_CASE_INSENSITIVE wtFwpMatchType = cFWP_MATCH_FLAGS_NONE_SET + 1
+	cFWP_MATCH_NOT_EQUAL              wtFwpMatchType = cFWP_MATCH_EQUAL_CASE_INSENSITIVE + 1
+	cFWP_MATCH_PREFIX                 wtFwpMatchType = cFWP_MATCH_NOT_EQUAL + 1
+	cFWP_MATCH_NOT_PREFIX             wtFwpMatchType = cFWP_MATCH_PREFIX + 1
+	cFWP_MATCH_TYPE_MAX               wtFwpMatchType = cFWP_MATCH_NOT_PREFIX + 1
+)
+
+// FWPM_ACTION0 defined in fwpmtypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwpmtypes/ns-fwpmtypes-fwpm_action0_)
+type wtFwpmAction0 struct {
+	_type      wtFwpActionType
+	filterType windows.GUID // Windows type: GUID
+}
+
+// Defined in fwpmu.h. 4cd62a49-59c3-4969-b7f3-bda5d32890a4
+var cFWPM_CONDITION_IP_LOCAL_INTERFACE = windows.GUID{
+	Data1: 0x4cd62a49,
+	Data2: 0x59c3,
+	Data3: 0x4969,
+	Data4: [8]byte{0xb7, 0xf3, 0xbd, 0xa5, 0xd3, 0x28, 0x90, 0xa4},
+}
+
+// Defined in fwpmu.h. b235ae9a-1d64-49b8-a44c-5ff3d9095045
+var cFWPM_CONDITION_IP_REMOTE_ADDRESS = windows.GUID{
+	Data1: 0xb235ae9a,
+	Data2: 0x1d64,
+	Data3: 0x49b8,
+	Data4: [8]byte{0xa4, 0x4c, 0x5f, 0xf3, 0xd9, 0x09, 0x50, 0x45},
+}
+
+// Defined in fwpmu.h. daf8cd14-e09e-4c93-a5ae-c5c13b73ffca
+var cFWPM_CONDITION_INTERFACE_TYPE = windows.GUID{
+	Data1: 0xdaf8cd14,
+	Data2: 0xe09e,
+	Data3: 0x4c93,
+	Data4: [8]byte{0xa5, 0xae, 0xc5, 0xc1, 0x3b, 0x73, 0xff, 0xca},
+}
+
+// Defined in fwpmu.h. 3971ef2b-623e-4f9a-8cb1-6e79b806b9a7
+var cFWPM_CONDITION_IP_PROTOCOL = windows.GUID{
+	Data1: 0x3971ef2b,
+	Data2: 0x623e,
+	Data3: 0x4f9a,
+	Data4: [8]byte{0x8c, 0xb1, 0x6e, 0x79, 0xb8, 0x06, 0xb9, 0xa7},
+}
+
+// Defined in fwpmu.h. 0c1ba1af-5765-453f-af22-a8f791ac775b
+var cFWPM_CONDITION_IP_LOCAL_PORT = windows.GUID{
+	Data1: 0x0c1ba1af,
+	Data2: 0x5765,
+	Data3: 0x453f,
+	Data4: [8]byte{0xaf, 0x22, 0xa8, 0xf7, 0x91, 0xac, 0x77, 0x5b},
+}
+
+// Defined in fwpmu.h. c35a604d-d22b-4e1a-91b4-68f674ee674b
+var cFWPM_CONDITION_IP_REMOTE_PORT = windows.GUID{
+	Data1: 0xc35a604d,
+	Data2: 0xd22b,
+	Data3: 0x4e1a,
+	Data4: [8]byte{0x91, 0xb4, 0x68, 0xf6, 0x74, 0xee, 0x67, 0x4b},
+}
+
+// Defined in fwpmu.h. d78e1e87-8644-4ea5-9437-d809ecefc971
+var cFWPM_CONDITION_ALE_APP_ID = windows.GUID{
+	Data1: 0xd78e1e87,
+	Data2: 0x8644,
+	Data3: 0x4ea5,
+	Data4: [8]byte{0x94, 0x37, 0xd8, 0x09, 0xec, 0xef, 0xc9, 0x71},
+}
+
+// af043a0a-b34d-4f86-979c-c90371af6e66
+var cFWPM_CONDITION_ALE_USER_ID = windows.GUID{
+	Data1: 0xaf043a0a,
+	Data2: 0xb34d,
+	Data3: 0x4f86,
+	Data4: [8]byte{0x97, 0x9c, 0xc9, 0x03, 0x71, 0xaf, 0x6e, 0x66},
+}
+
+// d9ee00de-c1ef-4617-bfe3-ffd8f5a08957
+var cFWPM_CONDITION_IP_LOCAL_ADDRESS = windows.GUID{
+	Data1: 0xd9ee00de,
+	Data2: 0xc1ef,
+	Data3: 0x4617,
+	Data4: [8]byte{0xbf, 0xe3, 0xff, 0xd8, 0xf5, 0xa0, 0x89, 0x57},
+}
+
+var cFWPM_CONDITION_ICMP_TYPE = cFWPM_CONDITION_IP_LOCAL_PORT
+
+// Defined in fwpmtypes.h
+type wtFwpmFilterFlags uint32
+
+const (
+	cFWPM_FILTER_FLAG_NONE                                wtFwpmFilterFlags = 0x00000000
+	cFWPM_FILTER_FLAG_PERSISTENT                          wtFwpmFilterFlags = 0x00000001
+	cFWPM_FILTER_FLAG_BOOTTIME                            wtFwpmFilterFlags = 0x00000002
+	cFWPM_FILTER_FLAG_HAS_PROVIDER_CONTEXT                wtFwpmFilterFlags = 0x00000004
+	cFWPM_FILTER_FLAG_CLEAR_ACTION_RIGHT                  wtFwpmFilterFlags = 0x00000008
+	cFWPM_FILTER_FLAG_PERMIT_IF_CALLOUT_UNREGISTERED      wtFwpmFilterFlags = 0x00000010
+	cFWPM_FILTER_FLAG_DISABLED                            wtFwpmFilterFlags = 0x00000020
+	cFWPM_FILTER_FLAG_INDEXED                             wtFwpmFilterFlags = 0x00000040
+	cFWPM_FILTER_FLAG_HAS_SECURITY_REALM_PROVIDER_CONTEXT wtFwpmFilterFlags = 0x00000080
+	cFWPM_FILTER_FLAG_SYSTEMOS_ONLY                       wtFwpmFilterFlags = 0x00000100
+	cFWPM_FILTER_FLAG_GAMEOS_ONLY                         wtFwpmFilterFlags = 0x00000200
+	cFWPM_FILTER_FLAG_SILENT_MODE                         wtFwpmFilterFlags = 0x00000400
+	cFWPM_FILTER_FLAG_IPSEC_NO_ACQUIRE_INITIATE           wtFwpmFilterFlags = 0x00000800
+)
+
+// FWPM_LAYER_ALE_AUTH_CONNECT_V4 (c38d57d1-05a7-4c33-904f-7fbceee60e82) defined in fwpmu.h
+var cFWPM_LAYER_ALE_AUTH_CONNECT_V4 = windows.GUID{
+	Data1: 0xc38d57d1,
+	Data2: 0x05a7,
+	Data3: 0x4c33,
+	Data4: [8]byte{0x90, 0x4f, 0x7f, 0xbc, 0xee, 0xe6, 0x0e, 0x82},
+}
+
+// e1cd9fe7-f4b5-4273-96c0-592e487b8650
+var cFWPM_LAYER_ALE_AUTH_RECV_ACCEPT_V4 = windows.GUID{
+	Data1: 0xe1cd9fe7,
+	Data2: 0xf4b5,
+	Data3: 0x4273,
+	Data4: [8]byte{0x96, 0xc0, 0x59, 0x2e, 0x48, 0x7b, 0x86, 0x50},
+}
+
+// FWPM_LAYER_ALE_AUTH_CONNECT_V6 (4a72393b-319f-44bc-84c3-ba54dcb3b6b4) defined in fwpmu.h
+var cFWPM_LAYER_ALE_AUTH_CONNECT_V6 = windows.GUID{
+	Data1: 0x4a72393b,
+	Data2: 0x319f,
+	Data3: 0x44bc,
+	Data4: [8]byte{0x84, 0xc3, 0xba, 0x54, 0xdc, 0xb3, 0xb6, 0xb4},
+}
+
+// a3b42c97-9f04-4672-b87e-cee9c483257f
+var cFWPM_LAYER_ALE_AUTH_RECV_ACCEPT_V6 = windows.GUID{
+	Data1: 0xa3b42c97,
+	Data2: 0x9f04,
+	Data3: 0x4672,
+	Data4: [8]byte{0xb8, 0x7e, 0xce, 0xe9, 0xc4, 0x83, 0x25, 0x7f},
+}
+
+// FWP_BITMAP_ARRAY64 defined in fwtypes.h
+type wtFwpBitmapArray64 struct {
+	bitmapArray64 [8]uint8 // Windows type: [8]UINT8
+}
+
+// FWP_BYTE_ARRAY6 defined in fwtypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwptypes/ns-fwptypes-fwp_byte_array6_)
+type wtFwpByteArray6 struct {
+	byteArray6 [6]uint8 // Windows type: [6]UINT8
+}
+
+// FWP_BYTE_ARRAY16 defined in fwptypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwptypes/ns-fwptypes-fwp_byte_array16_)
+type wtFwpByteArray16 struct {
+	byteArray16 [16]uint8 // Windows type [16]UINT8
+}
+
+// FWP_CONDITION_VALUE0 defined in fwptypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwptypes/ns-fwptypes-fwp_condition_value0_).
+type wtFwpConditionValue0 wtFwpValue0
+
+// FWP_DATA_TYPE defined in fwptypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwptypes/ne-fwptypes-fwp_data_type_)
+type wtFwpDataType uint
+
+const (
+	cFWP_EMPTY                         wtFwpDataType = 0
+	cFWP_UINT8                         wtFwpDataType = cFWP_EMPTY + 1
+	cFWP_UINT16                        wtFwpDataType = cFWP_UINT8 + 1
+	cFWP_UINT32                        wtFwpDataType = cFWP_UINT16 + 1
+	cFWP_UINT64                        wtFwpDataType = cFWP_UINT32 + 1
+	cFWP_INT8                          wtFwpDataType = cFWP_UINT64 + 1
+	cFWP_INT16                         wtFwpDataType = cFWP_INT8 + 1
+	cFWP_INT32                         wtFwpDataType = cFWP_INT16 + 1
+	cFWP_INT64                         wtFwpDataType = cFWP_INT32 + 1
+	cFWP_FLOAT                         wtFwpDataType = cFWP_INT64 + 1
+	cFWP_DOUBLE                        wtFwpDataType = cFWP_FLOAT + 1
+	cFWP_BYTE_ARRAY16_TYPE             wtFwpDataType = cFWP_DOUBLE + 1
+	cFWP_BYTE_BLOB_TYPE                wtFwpDataType = cFWP_BYTE_ARRAY16_TYPE + 1
+	cFWP_SID                           wtFwpDataType = cFWP_BYTE_BLOB_TYPE + 1
+	cFWP_SECURITY_DESCRIPTOR_TYPE      wtFwpDataType = cFWP_SID + 1
+	cFWP_TOKEN_INFORMATION_TYPE        wtFwpDataType = cFWP_SECURITY_DESCRIPTOR_TYPE + 1
+	cFWP_TOKEN_ACCESS_INFORMATION_TYPE wtFwpDataType = cFWP_TOKEN_INFORMATION_TYPE + 1
+	cFWP_UNICODE_STRING_TYPE           wtFwpDataType = cFWP_TOKEN_ACCESS_INFORMATION_TYPE + 1
+	cFWP_BYTE_ARRAY6_TYPE              wtFwpDataType = cFWP_UNICODE_STRING_TYPE + 1
+	cFWP_BITMAP_INDEX_TYPE             wtFwpDataType = cFWP_BYTE_ARRAY6_TYPE + 1
+	cFWP_BITMAP_ARRAY64_TYPE           wtFwpDataType = cFWP_BITMAP_INDEX_TYPE + 1
+	cFWP_SINGLE_DATA_TYPE_MAX          wtFwpDataType = 0xff
+	cFWP_V4_ADDR_MASK                  wtFwpDataType = cFWP_SINGLE_DATA_TYPE_MAX + 1
+	cFWP_V6_ADDR_MASK                  wtFwpDataType = cFWP_V4_ADDR_MASK + 1
+	cFWP_RANGE_TYPE                    wtFwpDataType = cFWP_V6_ADDR_MASK + 1
+	cFWP_DATA_TYPE_MAX                 wtFwpDataType = cFWP_RANGE_TYPE + 1
+)
+
+// FWP_V4_ADDR_AND_MASK defined in fwptypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwptypes/ns-fwptypes-fwp_v4_addr_and_mask_).
+type wtFwpV4AddrAndMask struct {
+	addr uint32
+	mask uint32
+}
+
+// FWP_V6_ADDR_AND_MASK defined in fwptypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwptypes/ns-fwptypes-fwp_v6_addr_and_mask_).
+type wtFwpV6AddrAndMask struct {
+	addr         [16]uint8
+	prefixLength uint8
+}
+
+// FWP_VALUE0 defined in fwptypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwptypes/ns-fwptypes-fwp_value0_)
+type wtFwpValue0 struct {
+	_type wtFwpDataType
+	value uintptr
+}
+
+// FWPM_DISPLAY_DATA0 defined in fwptypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwptypes/ns-fwptypes-fwpm_display_data0_).
+type wtFwpmDisplayData0 struct {
+	name        *uint16 // Windows type: *wchar_t
+	description *uint16 // Windows type: *wchar_t
+}
+
+// FWPM_FILTER_CONDITION0 defined in fwpmtypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwpmtypes/ns-fwpmtypes-fwpm_filter_condition0_).
+type wtFwpmFilterCondition0 struct {
+	fieldKey       windows.GUID // Windows type: GUID
+	matchType      wtFwpMatchType
+	conditionValue wtFwpConditionValue0
+}
+
+// FWPM_PROVIDER0 defined in fwpmtypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwpmtypes/ns-fwpmtypes-fwpm_provider0_)
+type wtFwpProvider0 struct {
+	providerKey  windows.GUID // Windows type: GUID
+	displayData  wtFwpmDisplayData0
+	flags        uint32
+	providerData wtFwpByteBlob
+	serviceName  *uint16 // Windows type: *wchar_t
+}
+
+type wtFwpmSessionFlagsValue uint32
+
+const (
+	cFWPM_SESSION_FLAG_DYNAMIC wtFwpmSessionFlagsValue = 0x00000001 // FWPM_SESSION_FLAG_DYNAMIC defined in fwpmtypes.h
+)
+
+// FWPM_SESSION0 defined in fwpmtypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwpmtypes/ns-fwpmtypes-fwpm_session0_).
+type wtFwpmSession0 struct {
+	sessionKey           windows.GUID // Windows type: GUID
+	displayData          wtFwpmDisplayData0
+	flags                wtFwpmSessionFlagsValue // Windows type UINT32
+	txnWaitTimeoutInMSec uint32
+	processId            uint32 // Windows type: DWORD
+	sid                  *windows.SID
+	username             *uint16 // Windows type: *wchar_t
+	kernelMode           uint8   // Windows type: BOOL
+}
+
+type wtFwpmSublayerFlags uint32
+
+const (
+	cFWPM_SUBLAYER_FLAG_PERSISTENT wtFwpmSublayerFlags = 0x00000001 // FWPM_SUBLAYER_FLAG_PERSISTENT defined in fwpmtypes.h
+)
+
+// FWPM_SUBLAYER0 defined in fwpmtypes.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/fwpmtypes/ns-fwpmtypes-fwpm_sublayer0_)
+type wtFwpmSublayer0 struct {
+	subLayerKey  windows.GUID // Windows type: GUID
+	displayData  wtFwpmDisplayData0
+	flags        wtFwpmSublayerFlags
+	providerKey  *windows.GUID // Windows type: *GUID
+	providerData wtFwpByteBlob
+	weight       uint16
+}
+
+// Defined in rpcdce.h
+type wtRpcCAuthN uint32
+
+const (
+	cRPC_C_AUTHN_NONE          wtRpcCAuthN = 0
+	cRPC_C_AUTHN_DCE_PRIVATE   wtRpcCAuthN = 1
+	cRPC_C_AUTHN_DCE_PUBLIC    wtRpcCAuthN = 2
+	cRPC_C_AUTHN_DEC_PUBLIC    wtRpcCAuthN = 4
+	cRPC_C_AUTHN_GSS_NEGOTIATE wtRpcCAuthN = 9
+	cRPC_C_AUTHN_WINNT         wtRpcCAuthN = 10
+	cRPC_C_AUTHN_GSS_SCHANNEL  wtRpcCAuthN = 14
+	cRPC_C_AUTHN_GSS_KERBEROS  wtRpcCAuthN = 16
+	cRPC_C_AUTHN_DPA           wtRpcCAuthN = 17
+	cRPC_C_AUTHN_MSN           wtRpcCAuthN = 18
+	cRPC_C_AUTHN_DIGEST        wtRpcCAuthN = 21
+	cRPC_C_AUTHN_KERNEL        wtRpcCAuthN = 20
+	cRPC_C_AUTHN_NEGO_EXTENDER wtRpcCAuthN = 30
+	cRPC_C_AUTHN_PKU2U         wtRpcCAuthN = 31
+	cRPC_C_AUTHN_LIVE_SSP      wtRpcCAuthN = 32
+	cRPC_C_AUTHN_LIVEXP_SSP    wtRpcCAuthN = 35
+	cRPC_C_AUTHN_CLOUD_AP      wtRpcCAuthN = 36
+	cRPC_C_AUTHN_MSONLINE      wtRpcCAuthN = 82
+	cRPC_C_AUTHN_MQ            wtRpcCAuthN = 100
+	cRPC_C_AUTHN_DEFAULT       wtRpcCAuthN = 0xFFFFFFFF
+)
+
+// SEC_WINNT_AUTH_IDENTITY_W defined in rpcdce.h
+// (https://docs.microsoft.com/en-us/windows/desktop/api/rpcdce/ns-rpcdce-_sec_winnt_auth_identity_w).
+type wtSecWinntAuthIdentityW struct {
+	User           *uint16 // Windows type: unsigned short
+	UserLength     int32   // Windows type: long
+	Domain         *uint16 // Windows type: unsigned short
+	DomainLength   int32   // Windows type: long
+	Password       *uint16 // Windows type: unsigned short
+	PasswordLength int32   // Windows type: long
+	Flags          int32   // Windows type: long
+}
+
+// FWPM_PROVIDER0 defined in fwpmtypes.h
+// (https://docs.microsoft.com/sv-se/windows/desktop/api/fwpmtypes/ns-fwpmtypes-fwpm_provider0_).
+type wtFwpmProvider0 struct {
+	providerKey  windows.GUID
+	displayData  wtFwpmDisplayData0
+	flags        uint32
+	providerData wtFwpByteBlob
+	serviceName  *uint16
+}
+
+type wtObjectType uint32
+
+const (
+	cSE_KERNEL_OBJECT wtObjectType = 6
+)
+
+type wtIfType uint32
+
+const (
+	cIF_TYPE_SOFTWARE_LOOPBACK wtIfType = 24
+)
+
+type wtIpProto uint32
+
+const (
+	cIPPROTO_ICMP wtIpProto = 1
+	cIPPROTO_TCP  wtIpProto = 6
+	cIPPROTO_UDP  wtIpProto = 17
+)