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-rw-r--r--tun/tun_windows.go2
-rw-r--r--tun/wintun/setupapi/setupapi_windows.go29
-rw-r--r--tun/wintun/setupapi/setupapi_windows_test.go5
-rw-r--r--tun/wintun/wintun_windows.go79
4 files changed, 63 insertions, 52 deletions
diff --git a/tun/tun_windows.go b/tun/tun_windows.go
index d4be66b..4223190 100644
--- a/tun/tun_windows.go
+++ b/tun/tun_windows.go
@@ -348,5 +348,5 @@ func (tun *NativeTun) Write(buff []byte, offset int) (int, error) {
// GUID returns Windows adapter instance ID.
//
func (tun *NativeTun) GUID() windows.GUID {
- return *(*windows.GUID)(tun.wt)
+ return tun.wt.CfgInstanceID
}
diff --git a/tun/wintun/setupapi/setupapi_windows.go b/tun/wintun/setupapi/setupapi_windows.go
index 486a1ff..71732a4 100644
--- a/tun/wintun/setupapi/setupapi_windows.go
+++ b/tun/wintun/setupapi/setupapi_windows.go
@@ -7,14 +7,12 @@ package setupapi
import (
"encoding/binary"
- "errors"
"fmt"
"syscall"
"unsafe"
"golang.org/x/sys/windows"
"golang.org/x/sys/windows/registry"
- "golang.zx2c4.com/wireguard/tun/wintun/guid"
)
//sys setupDiCreateDeviceInfoListEx(classGUID *windows.GUID, hwndParent uintptr, machineName *uint16, reserved uintptr) (handle DevInfo, err error) [failretval==DevInfo(windows.InvalidHandle)] = setupapi.SetupDiCreateDeviceInfoListExW
@@ -236,33 +234,6 @@ func (deviceInfoSet DevInfo) OpenDevRegKey(DeviceInfoData *DevInfoData, Scope DI
return SetupDiOpenDevRegKey(deviceInfoSet, DeviceInfoData, Scope, HwProfile, KeyType, samDesired)
}
-// GetInterfaceID method returns network interface ID.
-func (deviceInfoSet DevInfo) GetInterfaceID(deviceInfoData *DevInfoData) (*windows.GUID, error) {
- // Open HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\<class>\<id> registry key.
- key, err := deviceInfoSet.OpenDevRegKey(deviceInfoData, DICS_FLAG_GLOBAL, 0, DIREG_DRV, registry.READ)
- if err != nil {
- return nil, errors.New("Device-specific registry key open failed: " + err.Error())
- }
- defer key.Close()
-
- // Read the NetCfgInstanceId value.
- value, valueType, err := key.GetStringValue("NetCfgInstanceId")
- if err != nil {
- return nil, errors.New("RegQueryStringValue(\"NetCfgInstanceId\") failed: " + err.Error())
- }
- if valueType != registry.SZ {
- return nil, fmt.Errorf("NetCfgInstanceId registry value is not REG_SZ (expected: %v, provided: %v)", registry.SZ, valueType)
- }
-
- // Convert to windows.GUID.
- ifid, err := guid.FromString(value)
- if err != nil {
- return nil, fmt.Errorf("NetCfgInstanceId registry value is not a GUID (expected: \"{...}\", provided: %q)", value)
- }
-
- return ifid, nil
-}
-
//sys setupDiGetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, property SPDRP, propertyRegDataType *uint32, propertyBuffer *byte, propertyBufferSize uint32, requiredSize *uint32) (err error) = setupapi.SetupDiGetDeviceRegistryPropertyW
// SetupDiGetDeviceRegistryProperty function retrieves a specified Plug and Play device property.
diff --git a/tun/wintun/setupapi/setupapi_windows_test.go b/tun/wintun/setupapi/setupapi_windows_test.go
index c6f4a15..30f3692 100644
--- a/tun/wintun/setupapi/setupapi_windows_test.go
+++ b/tun/wintun/setupapi/setupapi_windows_test.go
@@ -291,11 +291,6 @@ func TestSetupDiOpenDevRegKey(t *testing.T) {
t.Errorf("Error calling SetupDiOpenDevRegKey: %s", err.Error())
}
defer key.Close()
-
- _, err = devInfoList.GetInterfaceID(data)
- if err != nil {
- t.Errorf("Error calling GetInterfaceID: %s", err.Error())
- }
}
}
diff --git a/tun/wintun/wintun_windows.go b/tun/wintun/wintun_windows.go
index 881b656..7170686 100644
--- a/tun/wintun/wintun_windows.go
+++ b/tun/wintun/wintun_windows.go
@@ -22,7 +22,11 @@ import (
//
// Wintun is a handle of a Wintun adapter
//
-type Wintun windows.GUID
+type Wintun struct {
+ CfgInstanceID windows.GUID
+ LUIDIndex uint32
+ IfType uint32
+}
var deviceClassNetGUID = windows.GUID{Data1: 0x4d36e972, Data2: 0xe325, Data3: 0x11ce, Data4: [8]byte{0xbf, 0xc1, 0x08, 0x00, 0x2b, 0xe1, 0x03, 0x18}}
@@ -31,7 +35,52 @@ const enumerator = ""
const machineName = ""
//
-// GetInterface finds interface ID by name.
+// MakeWintun creates interface handle and populates it from device registry key
+//
+func MakeWintun(deviceInfoSet setupapi.DevInfo, deviceInfoData *setupapi.DevInfoData) (*Wintun, error) {
+ // Open HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\<class>\<id> registry key.
+ key, err := deviceInfoSet.OpenDevRegKey(deviceInfoData, setupapi.DICS_FLAG_GLOBAL, 0, setupapi.DIREG_DRV, registry.READ)
+ if err != nil {
+ return nil, errors.New("Device-specific registry key open failed: " + err.Error())
+ }
+ defer key.Close()
+
+ // Read the NetCfgInstanceId value.
+ valueStr, valueType, err := key.GetStringValue("NetCfgInstanceId")
+ if err != nil {
+ return nil, errors.New("RegQueryStringValue(\"NetCfgInstanceId\") failed: " + err.Error())
+ }
+ if valueType != registry.SZ {
+ return nil, fmt.Errorf("NetCfgInstanceId registry value is not REG_SZ (expected: %v, provided: %v)", registry.SZ, valueType)
+ }
+
+ // Convert to windows.GUID.
+ ifid, err := guid.FromString(valueStr)
+ if err != nil {
+ return nil, fmt.Errorf("NetCfgInstanceId registry value is not a GUID (expected: \"{...}\", provided: %q)", valueStr)
+ }
+
+ // Read the NetLuidIndex value.
+ luidIdx, valueType, err := key.GetIntegerValue("NetLuidIndex")
+ if err != nil {
+ return nil, errors.New("RegQueryValue(\"NetLuidIndex\") failed: " + err.Error())
+ }
+
+ // Read the NetLuidIndex value.
+ ifType, valueType, err := key.GetIntegerValue("*IfType")
+ if err != nil {
+ return nil, errors.New("RegQueryValue(\"*IfType\") failed: " + err.Error())
+ }
+
+ return &Wintun{
+ CfgInstanceID: *ifid,
+ LUIDIndex: uint32(luidIdx),
+ IfType: uint32(ifType),
+ }, nil
+}
+
+//
+// GetInterface finds interface by name.
//
// hwndParent is a handle to the top-level window to use for any user
// interface that is related to non-device-specific actions (such as a select-
@@ -39,9 +88,8 @@ const machineName = ""
// optional and can be 0. If a specific top-level window is not required, set
// hwndParent to 0.
//
-// Function returns interface ID when the interface was found, or nil
-// otherwise. If the interface is found but not Wintun-class, the function
-// returns interface ID with an error.
+// Function returns interface if found, or nil otherwise. If the interface is
+// found but not Wintun-class, the function returns interface and an error.
//
func GetInterface(ifname string, hwndParent uintptr) (*Wintun, error) {
// Create a list of network devices.
@@ -70,13 +118,13 @@ func GetInterface(ifname string, hwndParent uintptr) (*Wintun, error) {
}
// Get interface ID.
- ifid, err := devInfoList.GetInterfaceID(deviceData)
+ wintun, err := MakeWintun(devInfoList, deviceData)
if err != nil {
continue
}
// Get interface name.
- ifname2, err := ((*Wintun)(ifid)).GetInterfaceName()
+ ifname2, err := wintun.GetInterfaceName()
if err != nil {
continue
}
@@ -110,12 +158,12 @@ func GetInterface(ifname string, hwndParent uintptr) (*Wintun, error) {
if driverDetailData.IsCompatible(hardwareID) {
// Matching hardware ID found.
- return (*Wintun)(ifid), nil
+ return wintun, nil
}
}
// This interface is not using Wintun driver.
- return (*Wintun)(ifid), errors.New("Foreign network interface with the same name exists")
+ return wintun, errors.New("Foreign network interface with the same name exists")
}
}
@@ -273,7 +321,7 @@ func CreateInterface(description string, hwndParent uintptr) (*Wintun, bool, err
return nil, fmt.Errorf("NetCfgInstanceId registry value is not a GUID (expected: \"{...}\", provided: %q)", value)
}
- wintun := (*Wintun)(ifid)
+ wintun := &Wintun{CfgInstanceID: *ifid}
keyNetName := wintun.GetNetRegKeyName()
keyNet, err := registry.OpenKey(registry.LOCAL_MACHINE, keyNetName, registry.QUERY_VALUE)
if err != nil {
@@ -355,8 +403,6 @@ func CreateInterface(description string, hwndParent uintptr) (*Wintun, bool, err
// reboot is required.
//
func (wintun *Wintun) DeleteInterface(hwndParent uintptr) (bool, bool, error) {
- ifid := (*windows.GUID)(wintun)
-
// Create a list of network devices.
devInfoList, err := setupapi.SetupDiGetClassDevsEx(&deviceClassNetGUID, enumerator, hwndParent, setupapi.DIGCF_PRESENT, setupapi.DevInfo(0), machineName)
if err != nil {
@@ -376,12 +422,12 @@ func (wintun *Wintun) DeleteInterface(hwndParent uintptr) (bool, bool, error) {
}
// Get interface ID.
- ifid2, err := devInfoList.GetInterfaceID(deviceData)
+ wintun2, err := MakeWintun(devInfoList, deviceData)
if err != nil {
continue
}
- if *ifid == *ifid2 {
+ if wintun.CfgInstanceID == wintun2.CfgInstanceID {
// Remove the device.
removeDeviceParams := setupapi.RemoveDeviceParams{
ClassInstallHeader: *setupapi.MakeClassInstallHeader(setupapi.DIF_REMOVE),
@@ -469,8 +515,7 @@ func (wintun *Wintun) SetInterfaceName(ifname string) error {
// GetNetRegKeyName returns interface-specific network registry key name.
//
func (wintun *Wintun) GetNetRegKeyName() string {
- ifid := (*windows.GUID)(wintun)
- return fmt.Sprintf("SYSTEM\\CurrentControlSet\\Control\\Network\\%v\\%v\\Connection", guid.ToString(&deviceClassNetGUID), guid.ToString(ifid))
+ return fmt.Sprintf("SYSTEM\\CurrentControlSet\\Control\\Network\\%v\\%v\\Connection", guid.ToString(&deviceClassNetGUID), guid.ToString(&wintun.CfgInstanceID))
}
//
@@ -505,5 +550,5 @@ func getRegStringValue(key registry.Key, name string) (string, error) {
// DataFileName returns Wintun device data pipe name.
//
func (wintun *Wintun) DataFileName() string {
- return fmt.Sprintf("\\\\.\\Global\\WINTUN_DEVICE_%s", guid.ToString((*windows.GUID)(wintun)))
+ return fmt.Sprintf("\\\\.\\Global\\WINTUN%d", wintun.LUIDIndex)
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-30 17:16:29 +0000