This change can be used to easily get an access to any interface by name, e.g.
iface, err := net.InterfaceByName(name)
if err ! nil {
return err
}
luid, err := winipcfg.LUIDFromIndex(uint32(iface.Index))
if err != nil {
return err
}
---
tunnel/winipcfg/luid.go | 11 +++++++++++
tunnel/winipcfg/winipcfg.go | 1 +
tunnel/winipcfg/zwinipcfg_windows.go | 9 +++++++++
3 files changed, 21 insertions(+)
diff --git a/tunnel/winipcfg/luid.go b/tunnel/winipcfg/luid.go
index efdf1ba4..02ba65b4 100644
--- a/tunnel/winipcfg/luid.go
+++ b/tunnel/winipcfg/luid.go
@@ -63,6 +63,17 @@ func LUIDFromGUID(guid *windows.GUID) (LUID, error) {
return luid, nil
}
+// LUIDFromIndex function converts a local index for a network interface to
the locally unique identifier (LUID) for the interface.
+//
https://docs.microsoft.com/en-us/windows/desktop/api/netioapi/nf-netioapi-convertinterfaceindextoluid
+func LUIDFromIndex(index uint32) (LUID, error) {
+ var luid LUID
+ err := convertInterfaceIndexToLUID(index, &luid)
+ if err != nil {
+ return 0, err
+ }
+ return luid, nil
+}
+
// IPAddress method returns MibUnicastIPAddressRow struct that matches to
provided 'ip' argument. Corresponds to GetUnicastIpAddressEntry
//
(https://docs.microsoft.com/en-us/windows/desktop/api/netioapi/nf-netioapi-getunicastipaddressentry)
func (luid LUID) IPAddress(ip net.IP) (*MibUnicastIPAddressRow, error) {
diff --git a/tunnel/winipcfg/winipcfg.go b/tunnel/winipcfg/winipcfg.go
index 54040a1c..dd09d3a0 100644
--- a/tunnel/winipcfg/winipcfg.go
+++ b/tunnel/winipcfg/winipcfg.go
@@ -30,6 +30,7 @@ import (
//sys getIfTable2Ex(level MibIfEntryLevel, table **mibIfTable2) (ret error) =
iphlpapi.GetIfTable2Ex
//sys convertInterfaceLUIDToGUID(interfaceLUID *LUID, interfaceGUID
*windows.GUID) (ret error) = iphlpapi.ConvertInterfaceLuidToGuid
//sys convertInterfaceGUIDToLUID(interfaceGUID *windows.GUID, interfaceLUID
*LUID) (ret error) = iphlpapi.ConvertInterfaceGuidToLuid
+//sys convertInterfaceIndexToLUID(interfaceIndex uint32, interfaceLUID *LUID)
(ret error) = iphlpapi.ConvertInterfaceIndexToLuid
// GetAdaptersAddresses function retrieves the addresses associated with the
adapters on the local computer.
//
https://docs.microsoft.com/en-us/windows/desktop/api/iphlpapi/nf-iphlpapi-getadaptersaddresses
diff --git a/tunnel/winipcfg/zwinipcfg_windows.go
b/tunnel/winipcfg/zwinipcfg_windows.go
index c4bf3b00..ac89fec1 100644
--- a/tunnel/winipcfg/zwinipcfg_windows.go
+++ b/tunnel/winipcfg/zwinipcfg_windows.go
@@ -42,6 +42,7 @@ var (
procCancelMibChangeNotify2 =
modiphlpapi.NewProc("CancelMibChangeNotify2")
procConvertInterfaceGuidToLuid =
modiphlpapi.NewProc("ConvertInterfaceGuidToLuid")
+ procConvertInterfaceIndexToLuid =
modiphlpapi.NewProc("ConvertInterfaceIndexToLuid")
procConvertInterfaceLuidToGuid =
modiphlpapi.NewProc("ConvertInterfaceLuidToGuid")
procCreateAnycastIpAddressEntry =
modiphlpapi.NewProc("CreateAnycastIpAddressEntry")
procCreateIpForwardEntry2 =
modiphlpapi.NewProc("CreateIpForwardEntry2")
@@ -88,6 +89,14 @@ func convertInterfaceGUIDToLUID(interfaceGUID *windows.GUID,
interfaceLUID *LUID
return
}
+func convertInterfaceIndexToLUID(interfaceIndex uint32, interfaceLUID *LUID)
(ret error) {
+ r0, _, _ := syscall.Syscall(procConvertInterfaceIndexToLuid.Addr(), 2,
uintptr(interfaceIndex), uintptr(unsafe.Pointer(interfaceLUID)), 0)
+ if r0 != 0 {
+ ret = syscall.Errno(r0)
+ }
+ return
+}
+
func convertInterfaceLUIDToGUID(interfaceLUID *LUID, interfaceGUID
*windows.GUID) (ret error) {
r0, _, _ := syscall.Syscall(procConvertInterfaceLuidToGuid.Addr(), 2,
uintptr(unsafe.Pointer(interfaceLUID)), uintptr(unsafe.Pointer(interfaceGUID)),
0)
if r0 != 0 {
--
2.25.1
