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wintun: migrate to wintun.dll API

Browse Source 
Rather than having every application using Wintun driver reinvent the
wheel, the Wintun device/adapter/interface management has been moved
from wireguard-go to wintun.dll deployed with Wintun itself.

Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2020-07-22 09:15:49 +02:00
parent 5ca1218a5c
commit 3e08b8aee0
25 changed files with 183 additions and 3725 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
tun/tun_windows.go
View File

@ -33,7 +33,7 @@ type rateJuggler struct {
}
type NativeTun struct {
wt *wintun.Interface
wt *wintun.Adapter
handle windows.Handle
close bool
events chan Event
@ -44,7 +44,15 @@ type NativeTun struct {
writeLock sync.Mutex
}
const WintunPool = wintun.Pool("WireGuard")
var WintunPool *wintun.Pool
func init() {
var err error
WintunPool, err = wintun.MakePool("WireGuard")
if err != nil {
panic(fmt.Errorf("Failed to make pool: %v", err))
}
}
//go:linkname procyield runtime.procyield
func procyield(cycles uint32)
@ -66,18 +74,18 @@ func CreateTUN(ifname string, mtu int) (Device, error) {
//
func CreateTUNWithRequestedGUID(ifname string, requestedGUID *windows.GUID, mtu int) (Device, error) {
var err error
var wt *wintun.Interface
var wt *wintun.Adapter
// Does an interface with this name already exist?
wt, err = WintunPool.GetInterface(ifname)
wt, err = WintunPool.OpenAdapter(ifname)
if err == nil {
// If so, we delete it, in case it has weird residual configuration.
_, err = wt.DeleteInterface()
_, err = wt.Delete(true)
if err != nil {
return nil, fmt.Errorf("Error deleting already existing interface: %v", err)
}
}
wt, _, err = WintunPool.CreateInterface(ifname, requestedGUID)
wt, _, err = WintunPool.CreateAdapter(ifname, requestedGUID)
if err != nil {
return nil, fmt.Errorf("Error creating interface: %v", err)
}
@ -132,7 +140,7 @@ func (tun *NativeTun) Close() error {
tun.rings.Close()
var err error
if tun.wt != nil {
_, err = tun.wt.DeleteInterface()
_, err = tun.wt.Delete(false)
}
close(tun.events)
return err
@ -254,9 +262,9 @@ func (tun *NativeTun) LUID() uint64 {
return tun.wt.LUID()
}
// Version returns the version of the Wintun driver and NDIS system currently loaded.
func (tun *NativeTun) Version() (driverVersion string, ndisVersion string, err error) {
return tun.wt.Version()
// RunningVersion returns the running version of the Wintun driver.
func (tun *NativeTun) RunningVersion() (version uint32, err error) {
return wintun.RunningVersion()
}
func (rate *rateJuggler) update(packetLen uint64) {

25
tun/wintun/iphlpapi/conversion_windows.go
View File

@ -1,25 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package iphlpapi
import "golang.org/x/sys/windows"
//sys convertInterfaceLUIDToGUID(interfaceLUID *uint64, interfaceGUID *windows.GUID) (ret error) = iphlpapi.ConvertInterfaceLuidToGuid
//sys convertInterfaceAliasToLUID(interfaceAlias *uint16, interfaceLUID *uint64) (ret error) = iphlpapi.ConvertInterfaceAliasToLuid
func InterfaceGUIDFromAlias(alias string) (*windows.GUID, error) {
var luid uint64
var guid windows.GUID
err := convertInterfaceAliasToLUID(windows.StringToUTF16Ptr(alias), &luid)
if err != nil {
return nil, err
}
err = convertInterfaceLUIDToGUID(&luid, &guid)
if err != nil {
return nil, err
}
return &guid, nil
}

8
tun/wintun/iphlpapi/mksyscall.go
View File

@ -1,8 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package iphlpapi
//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zsyscall_windows.go conversion_windows.go

60
tun/wintun/iphlpapi/zsyscall_windows.go
View File

@ -1,60 +0,0 @@
// Code generated by 'go generate'; DO NOT EDIT.
package iphlpapi
import (
"syscall"
"unsafe"
"golang.org/x/sys/windows"
)
var _ unsafe.Pointer
// Do the interface allocations only once for common
// Errno values.
const (
errnoERROR_IO_PENDING = 997
)
var (
errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
)
// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e syscall.Errno) error {
switch e {
case 0:
return nil
case errnoERROR_IO_PENDING:
return errERROR_IO_PENDING
}
// TODO: add more here, after collecting data on the common
// error values see on Windows. (perhaps when running
// all.bat?)
return e
}
var (
modiphlpapi = windows.NewLazySystemDLL("iphlpapi.dll")
procConvertInterfaceLuidToGuid = modiphlpapi.NewProc("ConvertInterfaceLuidToGuid")
procConvertInterfaceAliasToLuid = modiphlpapi.NewProc("ConvertInterfaceAliasToLuid")
)
func convertInterfaceLUIDToGUID(interfaceLUID *uint64, interfaceGUID *windows.GUID) (ret error) {
r0, _, _ := syscall.Syscall(procConvertInterfaceLuidToGuid.Addr(), 2, uintptr(unsafe.Pointer(interfaceLUID)), uintptr(unsafe.Pointer(interfaceGUID)), 0)
if r0 != 0 {
ret = syscall.Errno(r0)
}
return
}
func convertInterfaceAliasToLUID(interfaceAlias *uint16, interfaceLUID *uint64) (ret error) {
r0, _, _ := syscall.Syscall(procConvertInterfaceAliasToLuid.Addr(), 2, uintptr(unsafe.Pointer(interfaceAlias)), uintptr(unsafe.Pointer(interfaceLUID)), 0)
if r0 != 0 {
ret = syscall.Errno(r0)
}
return
}

101
tun/wintun/namespace_windows.go
View File

@ -1,101 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package wintun
import (
"encoding/hex"
"errors"
"fmt"
"sync"
"unsafe"
"golang.org/x/crypto/blake2s"
"golang.org/x/sys/windows"
"golang.org/x/text/unicode/norm"
"golang.zx2c4.com/wireguard/tun/wintun/namespaceapi"
)
var (
wintunObjectSecurityAttributes *windows.SecurityAttributes
hasInitializedNamespace bool
initializingNamespace sync.Mutex
)
func initializeNamespace() error {
initializingNamespace.Lock()
defer initializingNamespace.Unlock()
if hasInitializedNamespace {
return nil
}
sd, err := windows.SecurityDescriptorFromString("O:SYD:P(A;;GA;;;SY)")
if err != nil {
return fmt.Errorf("SddlToSecurityDescriptor failed: %v", err)
}
wintunObjectSecurityAttributes = &windows.SecurityAttributes{
Length: uint32(unsafe.Sizeof(windows.SecurityAttributes{})),
SecurityDescriptor: sd,
}
sid, err := windows.CreateWellKnownSid(windows.WinLocalSystemSid)
if err != nil {
return fmt.Errorf("CreateWellKnownSid(LOCAL_SYSTEM) failed: %v", err)
}
boundary, err := namespaceapi.CreateBoundaryDescriptor("Wintun")
if err != nil {
return fmt.Errorf("CreateBoundaryDescriptor failed: %v", err)
}
err = boundary.AddSid(sid)
if err != nil {
return fmt.Errorf("AddSIDToBoundaryDescriptor failed: %v", err)
}
for {
_, err = namespaceapi.CreatePrivateNamespace(wintunObjectSecurityAttributes, boundary, "Wintun")
if err == windows.ERROR_ALREADY_EXISTS {
_, err = namespaceapi.OpenPrivateNamespace(boundary, "Wintun")
if err == windows.ERROR_PATH_NOT_FOUND {
continue
}
if err != nil {
return fmt.Errorf("OpenPrivateNamespace failed: %v", err)
}
}
if err != nil {
return fmt.Errorf("CreatePrivateNamespace failed: %v", err)
}
break
}
hasInitializedNamespace = true
return nil
}
func (pool Pool) takeNameMutex() (windows.Handle, error) {
err := initializeNamespace()
if err != nil {
return 0, err
}
const mutexLabel = "WireGuard Adapter Name Mutex Stable Suffix v1 jason@zx2c4.com"
b2, _ := blake2s.New256(nil)
b2.Write([]byte(mutexLabel))
b2.Write(norm.NFC.Bytes([]byte(string(pool))))
mutexName := `Wintun\Wintun-Name-Mutex-` + hex.EncodeToString(b2.Sum(nil))
mutex, err := windows.CreateMutex(wintunObjectSecurityAttributes, false, windows.StringToUTF16Ptr(mutexName))
if err != nil {
err = fmt.Errorf("Error creating name mutex: %v", err)
return 0, err
}
event, err := windows.WaitForSingleObject(mutex, windows.INFINITE)
if err != nil {
windows.CloseHandle(mutex)
return 0, fmt.Errorf("Error waiting on name mutex: %v", err)
}
if event != windows.WAIT_OBJECT_0 && event != windows.WAIT_ABANDONED {
windows.CloseHandle(mutex)
return 0, errors.New("Error with event trigger of name mutex")
}
return mutex, nil
}

8
tun/wintun/namespaceapi/mksyscall.go
View File

@ -1,8 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package namespaceapi
//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zsyscall_windows.go namespaceapi_windows.go

83
tun/wintun/namespaceapi/namespaceapi_windows.go
View File

@ -1,83 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package namespaceapi
import "golang.org/x/sys/windows"
//sys createBoundaryDescriptor(name *uint16, flags uint32) (handle windows.Handle, err error) = kernel32.CreateBoundaryDescriptorW
//sys deleteBoundaryDescriptor(boundaryDescriptor windows.Handle) = kernel32.DeleteBoundaryDescriptor
//sys addSIDToBoundaryDescriptor(boundaryDescriptor *windows.Handle, requiredSid *windows.SID) (err error) = kernel32.AddSIDToBoundaryDescriptor
//sys createPrivateNamespace(privateNamespaceAttributes *windows.SecurityAttributes, boundaryDescriptor windows.Handle, aliasPrefix *uint16) (handle windows.Handle, err error) = kernel32.CreatePrivateNamespaceW
//sys openPrivateNamespace(boundaryDescriptor windows.Handle, aliasPrefix *uint16) (handle windows.Handle, err error) = kernel32.OpenPrivateNamespaceW
//sys closePrivateNamespace(handle windows.Handle, flags uint32) (err error) = kernel32.ClosePrivateNamespace
// BoundaryDescriptor represents a boundary that defines how the objects in the namespace are to be isolated.
type BoundaryDescriptor windows.Handle
// CreateBoundaryDescriptor creates a boundary descriptor.
func CreateBoundaryDescriptor(name string) (BoundaryDescriptor, error) {
name16, err := windows.UTF16PtrFromString(name)
if err != nil {
return 0, err
}
handle, err := createBoundaryDescriptor(name16, 0)
if err != nil {
return 0, err
}
return BoundaryDescriptor(handle), nil
}
// Delete deletes the specified boundary descriptor.
func (bd BoundaryDescriptor) Delete() {
deleteBoundaryDescriptor(windows.Handle(bd))
}
// AddSid adds a security identifier (SID) to the specified boundary descriptor.
func (bd *BoundaryDescriptor) AddSid(requiredSid *windows.SID) error {
return addSIDToBoundaryDescriptor((*windows.Handle)(bd), requiredSid)
}
// PrivateNamespace represents a private namespace.
type PrivateNamespace windows.Handle
// CreatePrivateNamespace creates a private namespace.
func CreatePrivateNamespace(privateNamespaceAttributes *windows.SecurityAttributes, boundaryDescriptor BoundaryDescriptor, aliasPrefix string) (PrivateNamespace, error) {
aliasPrefix16, err := windows.UTF16PtrFromString(aliasPrefix)
if err != nil {
return 0, err
}
handle, err := createPrivateNamespace(privateNamespaceAttributes, windows.Handle(boundaryDescriptor), aliasPrefix16)
if err != nil {
return 0, err
}
return PrivateNamespace(handle), nil
}
// OpenPrivateNamespace opens a private namespace.
func OpenPrivateNamespace(boundaryDescriptor BoundaryDescriptor, aliasPrefix string) (PrivateNamespace, error) {
aliasPrefix16, err := windows.UTF16PtrFromString(aliasPrefix)
if err != nil {
return 0, err
}
handle, err := openPrivateNamespace(windows.Handle(boundaryDescriptor), aliasPrefix16)
if err != nil {
return 0, err
}
return PrivateNamespace(handle), nil
}
// ClosePrivateNamespaceFlags describes flags that are used by PrivateNamespace's Close() method.
type ClosePrivateNamespaceFlags uint32
const (
// PrivateNamespaceFlagDestroy makes the close to destroy the namespace.
PrivateNamespaceFlagDestroy = ClosePrivateNamespaceFlags(0x1)
)
// Close closes an open namespace handle.
func (pns PrivateNamespace) Close(flags ClosePrivateNamespaceFlags) error {
return closePrivateNamespace(windows.Handle(pns), uint32(flags))
}

116
tun/wintun/namespaceapi/zsyscall_windows.go
View File

@ -1,116 +0,0 @@
// Code generated by 'go generate'; DO NOT EDIT.
package namespaceapi
import (
"syscall"
"unsafe"
"golang.org/x/sys/windows"
)
var _ unsafe.Pointer
// Do the interface allocations only once for common
// Errno values.
const (
errnoERROR_IO_PENDING = 997
)
var (
errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
)
// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e syscall.Errno) error {
switch e {
case 0:
return nil
case errnoERROR_IO_PENDING:
return errERROR_IO_PENDING
}
// TODO: add more here, after collecting data on the common
// error values see on Windows. (perhaps when running
// all.bat?)
return e
}
var (
modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
procCreateBoundaryDescriptorW = modkernel32.NewProc("CreateBoundaryDescriptorW")
procDeleteBoundaryDescriptor = modkernel32.NewProc("DeleteBoundaryDescriptor")
procAddSIDToBoundaryDescriptor = modkernel32.NewProc("AddSIDToBoundaryDescriptor")
procCreatePrivateNamespaceW = modkernel32.NewProc("CreatePrivateNamespaceW")
procOpenPrivateNamespaceW = modkernel32.NewProc("OpenPrivateNamespaceW")
procClosePrivateNamespace = modkernel32.NewProc("ClosePrivateNamespace")
)
func createBoundaryDescriptor(name *uint16, flags uint32) (handle windows.Handle, err error) {
r0, _, e1 := syscall.Syscall(procCreateBoundaryDescriptorW.Addr(), 2, uintptr(unsafe.Pointer(name)), uintptr(flags), 0)
handle = windows.Handle(r0)
if handle == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func deleteBoundaryDescriptor(boundaryDescriptor windows.Handle) {
syscall.Syscall(procDeleteBoundaryDescriptor.Addr(), 1, uintptr(boundaryDescriptor), 0, 0)
return
}
func addSIDToBoundaryDescriptor(boundaryDescriptor *windows.Handle, requiredSid *windows.SID) (err error) {
r1, _, e1 := syscall.Syscall(procAddSIDToBoundaryDescriptor.Addr(), 2, uintptr(unsafe.Pointer(boundaryDescriptor)), uintptr(unsafe.Pointer(requiredSid)), 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func createPrivateNamespace(privateNamespaceAttributes *windows.SecurityAttributes, boundaryDescriptor windows.Handle, aliasPrefix *uint16) (handle windows.Handle, err error) {
r0, _, e1 := syscall.Syscall(procCreatePrivateNamespaceW.Addr(), 3, uintptr(unsafe.Pointer(privateNamespaceAttributes)), uintptr(boundaryDescriptor), uintptr(unsafe.Pointer(aliasPrefix)))
handle = windows.Handle(r0)
if handle == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func openPrivateNamespace(boundaryDescriptor windows.Handle, aliasPrefix *uint16) (handle windows.Handle, err error) {
r0, _, e1 := syscall.Syscall(procOpenPrivateNamespaceW.Addr(), 2, uintptr(boundaryDescriptor), uintptr(unsafe.Pointer(aliasPrefix)), 0)
handle = windows.Handle(r0)
if handle == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func closePrivateNamespace(handle windows.Handle, flags uint32) (err error) {
r1, _, e1 := syscall.Syscall(procClosePrivateNamespace.Addr(), 2, uintptr(handle), uintptr(flags), 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}

8
tun/wintun/nci/mksyscall.go
View File

@ -1,8 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package nci
//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zsyscall_windows.go nci_windows.go

28
tun/wintun/nci/nci_windows.go
View File

@ -1,28 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package nci
import "golang.org/x/sys/windows"
//sys nciSetConnectionName(guid *windows.GUID, newName *uint16) (ret error) = nci.NciSetConnectionName
//sys nciGetConnectionName(guid *windows.GUID, destName *uint16, inDestNameBytes uint32, outDestNameBytes *uint32) (ret error) = nci.NciGetConnectionName
func SetConnectionName(guid *windows.GUID, newName string) error {
newName16, err := windows.UTF16PtrFromString(newName)
if err != nil {
return err
}
return nciSetConnectionName(guid, newName16)
}
func ConnectionName(guid *windows.GUID) (string, error) {
var name [0x400]uint16
err := nciGetConnectionName(guid, &name[0], uint32(len(name)*2), nil)
if err != nil {
return "", err
}
return windows.UTF16ToString(name[:]), nil
}

60
tun/wintun/nci/zsyscall_windows.go
View File

@ -1,60 +0,0 @@
// Code generated by 'go generate'; DO NOT EDIT.
package nci
import (
"syscall"
"unsafe"
"golang.org/x/sys/windows"
)
var _ unsafe.Pointer
// Do the interface allocations only once for common
// Errno values.
const (
errnoERROR_IO_PENDING = 997
)
var (
errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
)
// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e syscall.Errno) error {
switch e {
case 0:
return nil
case errnoERROR_IO_PENDING:
return errERROR_IO_PENDING
}
// TODO: add more here, after collecting data on the common
// error values see on Windows. (perhaps when running
// all.bat?)
return e
}
var (
modnci = windows.NewLazySystemDLL("nci.dll")
procNciSetConnectionName = modnci.NewProc("NciSetConnectionName")
procNciGetConnectionName = modnci.NewProc("NciGetConnectionName")
)
func nciSetConnectionName(guid *windows.GUID, newName *uint16) (ret error) {
r0, _, _ := syscall.Syscall(procNciSetConnectionName.Addr(), 2, uintptr(unsafe.Pointer(guid)), uintptr(unsafe.Pointer(newName)), 0)
if r0 != 0 {
ret = syscall.Errno(r0)
}
return
}
func nciGetConnectionName(guid *windows.GUID, destName *uint16, inDestNameBytes uint32, outDestNameBytes *uint32) (ret error) {
r0, _, _ := syscall.Syscall6(procNciGetConnectionName.Addr(), 4, uintptr(unsafe.Pointer(guid)), uintptr(unsafe.Pointer(destName)), uintptr(inDestNameBytes), uintptr(unsafe.Pointer(outDestNameBytes)), 0, 0)
if r0 != 0 {
ret = syscall.Errno(r0)
}
return
}

8
tun/wintun/registry/mksyscall.go
View File

@ -1,8 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package registry
//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zregistry_windows.go registry_windows.go

272
tun/wintun/registry/registry_windows.go
View File

@ -1,272 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package registry
import (
"errors"
"fmt"
"runtime"
"strings"
"time"
"unsafe"
"golang.org/x/sys/windows"
"golang.org/x/sys/windows/registry"
)
const (
// REG_NOTIFY_CHANGE_NAME notifies the caller if a subkey is added or deleted.
REG_NOTIFY_CHANGE_NAME uint32 = 0x00000001
// REG_NOTIFY_CHANGE_ATTRIBUTES notifies the caller of changes to the attributes of the key, such as the security descriptor information.
REG_NOTIFY_CHANGE_ATTRIBUTES uint32 = 0x00000002
// REG_NOTIFY_CHANGE_LAST_SET notifies the caller of changes to a value of the key. This can include adding or deleting a value, or changing an existing value.
REG_NOTIFY_CHANGE_LAST_SET uint32 = 0x00000004
// REG_NOTIFY_CHANGE_SECURITY notifies the caller of changes to the security descriptor of the key.
REG_NOTIFY_CHANGE_SECURITY uint32 = 0x00000008
// REG_NOTIFY_THREAD_AGNOSTIC indicates that the lifetime of the registration must not be tied to the lifetime of the thread issuing the RegNotifyChangeKeyValue call. Note: This flag value is only supported in Windows 8 and later.
REG_NOTIFY_THREAD_AGNOSTIC uint32 = 0x10000000
)
//sys regNotifyChangeKeyValue(key windows.Handle, watchSubtree bool, notifyFilter uint32, event windows.Handle, asynchronous bool) (regerrno error) = advapi32.RegNotifyChangeKeyValue
func OpenKeyWait(k registry.Key, path string, access uint32, timeout time.Duration) (registry.Key, error) {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
deadline := time.Now().Add(timeout)
pathSpl := strings.Split(path, "\\")
for i := 0; ; i++ {
keyName := pathSpl[i]
isLast := i+1 == len(pathSpl)
event, err := windows.CreateEvent(nil, 0, 0, nil)
if err != nil {
return 0, fmt.Errorf("Error creating event: %v", err)
}
defer windows.CloseHandle(event)
var key registry.Key
for {
err = regNotifyChangeKeyValue(windows.Handle(k), false, REG_NOTIFY_CHANGE_NAME, windows.Handle(event), true)
if err != nil {
return 0, fmt.Errorf("Setting up change notification on registry key failed: %v", err)
}
var accessFlags uint32
if isLast {
accessFlags = access
} else {
accessFlags = registry.NOTIFY
}
key, err = registry.OpenKey(k, keyName, accessFlags)
if err == windows.ERROR_FILE_NOT_FOUND || err == windows.ERROR_PATH_NOT_FOUND {
timeout := time.Until(deadline) / time.Millisecond
if timeout < 0 {
timeout = 0
}
s, err := windows.WaitForSingleObject(event, uint32(timeout))
if err != nil {
return 0, fmt.Errorf("Unable to wait on registry key: %v", err)
}
if s == uint32(windows.WAIT_TIMEOUT) { // windows.WAIT_TIMEOUT status const is misclassified as error in golang.org/x/sys/windows
return 0, errors.New("Timeout waiting for registry key")
}
} else if err != nil {
return 0, fmt.Errorf("Error opening registry key %v: %v", path, err)
} else {
if isLast {
return key, nil
}
defer key.Close()
break
}
}
k = key
}
}
func WaitForKey(k registry.Key, path string, timeout time.Duration) error {
key, err := OpenKeyWait(k, path, registry.NOTIFY, timeout)
if err != nil {
return err
}
key.Close()
return nil
}
//
// getValue is more or less the same as windows/registry's getValue.
//
func getValue(k registry.Key, name string, buf []byte) (value []byte, valueType uint32, err error) {
var name16 *uint16
name16, err = windows.UTF16PtrFromString(name)
if err != nil {
return
}
n := uint32(len(buf))
for {
err = windows.RegQueryValueEx(windows.Handle(k), name16, nil, &valueType, (*byte)(unsafe.Pointer(&buf[0])), &n)
if err == nil {
value = buf[:n]
return
}
if err != windows.ERROR_MORE_DATA {
return
}
if n <= uint32(len(buf)) {
return
}
buf = make([]byte, n)
}
}
//
// getValueRetry function reads any value from registry. It waits for
// the registry value to become available or returns error on timeout.
//
// Key must be opened with at least QUERY_VALUE|NOTIFY access.
//
func getValueRetry(key registry.Key, name string, buf []byte, timeout time.Duration) ([]byte, uint32, error) {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
event, err := windows.CreateEvent(nil, 0, 0, nil)
if err != nil {
return nil, 0, fmt.Errorf("Error creating event: %v", err)
}
defer windows.CloseHandle(event)
deadline := time.Now().Add(timeout)
for {
err := regNotifyChangeKeyValue(windows.Handle(key), false, REG_NOTIFY_CHANGE_LAST_SET, windows.Handle(event), true)
if err != nil {
return nil, 0, fmt.Errorf("Setting up change notification on registry value failed: %v", err)
}
buf, valueType, err := getValue(key, name, buf)
if err == windows.ERROR_FILE_NOT_FOUND || err == windows.ERROR_PATH_NOT_FOUND {
timeout := time.Until(deadline) / time.Millisecond
if timeout < 0 {
timeout = 0
}
s, err := windows.WaitForSingleObject(event, uint32(timeout))
if err != nil {
return nil, 0, fmt.Errorf("Unable to wait on registry value: %v", err)
}
if s == uint32(windows.WAIT_TIMEOUT) { // windows.WAIT_TIMEOUT status const is misclassified as error in golang.org/x/sys/windows
return nil, 0, errors.New("Timeout waiting for registry value")
}
} else if err != nil {
return nil, 0, fmt.Errorf("Error reading registry value %v: %v", name, err)
} else {
return buf, valueType, nil
}
}
}
func toString(buf []byte, valueType uint32, err error) (string, error) {
if err != nil {
return "", err
}
var value string
switch valueType {
case registry.SZ, registry.EXPAND_SZ, registry.MULTI_SZ:
if len(buf) == 0 {
return "", nil
}
value = windows.UTF16PtrToString((*uint16)(unsafe.Pointer(&buf[0])))
default:
return "", registry.ErrUnexpectedType
}
if valueType != registry.EXPAND_SZ {
// Value does not require expansion.
return value, nil
}
valueExp, err := registry.ExpandString(value)
if err != nil {
// Expanding failed: return original sting value.
return value, nil
}
// Return expanded value.
return valueExp, nil
}
func toInteger(buf []byte, valueType uint32, err error) (uint64, error) {
if err != nil {
return 0, err
}
switch valueType {
case registry.DWORD:
if len(buf) != 4 {
return 0, errors.New("DWORD value is not 4 bytes long")
}
var val uint32
copy((*[4]byte)(unsafe.Pointer(&val))[:], buf)
return uint64(val), nil
case registry.QWORD:
if len(buf) != 8 {
return 0, errors.New("QWORD value is not 8 bytes long")
}
var val uint64
copy((*[8]byte)(unsafe.Pointer(&val))[:], buf)
return val, nil
default:
return 0, registry.ErrUnexpectedType
}
}
//
// GetStringValueWait function reads a string value from registry. It waits
// for the registry value to become available or returns error on timeout.
//
// Key must be opened with at least QUERY_VALUE|NOTIFY access.
//
// If the value type is REG_EXPAND_SZ the environment variables are expanded.
// Should expanding fail, original string value and nil error are returned.
//
// If the value type is REG_MULTI_SZ only the first string is returned.
//
func GetStringValueWait(key registry.Key, name string, timeout time.Duration) (string, error) {
return toString(getValueRetry(key, name, make([]byte, 256), timeout))
}
//
// GetStringValue function reads a string value from registry.
//
// Key must be opened with at least QUERY_VALUE access.
//
// If the value type is REG_EXPAND_SZ the environment variables are expanded.
// Should expanding fail, original string value and nil error are returned.
//
// If the value type is REG_MULTI_SZ only the first string is returned.
//
func GetStringValue(key registry.Key, name string) (string, error) {
return toString(getValue(key, name, make([]byte, 256)))
}
//
// GetIntegerValueWait function reads a DWORD32 or QWORD value from registry.
// It waits for the registry value to become available or returns error on
// timeout.
//
// Key must be opened with at least QUERY_VALUE|NOTIFY access.
//
func GetIntegerValueWait(key registry.Key, name string, timeout time.Duration) (uint64, error) {
return toInteger(getValueRetry(key, name, make([]byte, 8), timeout))
}

103
tun/wintun/registry/registry_windows_test.go
View File

@ -1,103 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package registry
import (
"testing"
"time"
"golang.org/x/sys/windows/registry"
)
const keyRoot = registry.CURRENT_USER
const pathRoot = "Software\\WireGuardRegistryTest"
const path = pathRoot + "\\foobar"
const pathFake = pathRoot + "\\raboof"
func Test_WaitForKey(t *testing.T) {
registry.DeleteKey(keyRoot, path)
registry.DeleteKey(keyRoot, pathRoot)
go func() {
time.Sleep(time.Second * 1)
key, _, err := registry.CreateKey(keyRoot, pathFake, registry.QUERY_VALUE)
if err != nil {
t.Errorf("Error creating registry key: %v", err)
}
key.Close()
registry.DeleteKey(keyRoot, pathFake)
key, _, err = registry.CreateKey(keyRoot, path, registry.QUERY_VALUE)
if err != nil {
t.Errorf("Error creating registry key: %v", err)
}
key.Close()
}()
err := WaitForKey(keyRoot, path, time.Second*2)
if err != nil {
t.Errorf("Error waiting for registry key: %v", err)
}
registry.DeleteKey(keyRoot, path)
registry.DeleteKey(keyRoot, pathRoot)
err = WaitForKey(keyRoot, path, time.Second*1)
if err == nil {
t.Error("Registry key notification expected to timeout but it succeeded.")
}
}
func Test_GetValueWait(t *testing.T) {
registry.DeleteKey(keyRoot, path)
registry.DeleteKey(keyRoot, pathRoot)
go func() {
time.Sleep(time.Second * 1)
key, _, err := registry.CreateKey(keyRoot, path, registry.SET_VALUE)
if err != nil {
t.Errorf("Error creating registry key: %v", err)
}
time.Sleep(time.Second * 1)
key.SetStringValue("name1", "eulav")
key.SetExpandStringValue("name2", "value")
time.Sleep(time.Second * 1)
key.SetDWordValue("name3", ^uint32(123))
key.SetDWordValue("name4", 123)
key.Close()
}()
key, err := OpenKeyWait(keyRoot, path, registry.QUERY_VALUE|registry.NOTIFY, time.Second*2)
if err != nil {
t.Errorf("Error waiting for registry key: %v", err)
}
valueStr, err := GetStringValueWait(key, "name2", time.Second*2)
if err != nil {
t.Errorf("Error waiting for registry value: %v", err)
}
if valueStr != "value" {
t.Errorf("Wrong value read: %v", valueStr)
}
_, err = GetStringValueWait(key, "nonexisting", time.Second*1)
if err == nil {
t.Error("Registry value notification expected to timeout but it succeeded.")
}
valueInt, err := GetIntegerValueWait(key, "name4", time.Second*2)
if err != nil {
t.Errorf("Error waiting for registry value: %v", err)
}
if valueInt != 123 {
t.Errorf("Wrong value read: %v", valueInt)
}
_, err = GetIntegerValueWait(key, "nonexisting", time.Second*1)
if err == nil {
t.Error("Registry value notification expected to timeout but it succeeded.")
}
key.Close()
registry.DeleteKey(keyRoot, path)
registry.DeleteKey(keyRoot, pathRoot)
}

63
tun/wintun/registry/zregistry_windows.go
View File

@ -1,63 +0,0 @@
// Code generated by 'go generate'; DO NOT EDIT.
package registry
import (
"syscall"
"unsafe"
"golang.org/x/sys/windows"
)
var _ unsafe.Pointer
// Do the interface allocations only once for common
// Errno values.
const (
errnoERROR_IO_PENDING = 997
)
var (
errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
)
// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e syscall.Errno) error {
switch e {
case 0:
return nil
case errnoERROR_IO_PENDING:
return errERROR_IO_PENDING
}
// TODO: add more here, after collecting data on the common
// error values see on Windows. (perhaps when running
// all.bat?)
return e
}
var (
modadvapi32 = windows.NewLazySystemDLL("advapi32.dll")
procRegNotifyChangeKeyValue = modadvapi32.NewProc("RegNotifyChangeKeyValue")
)
func regNotifyChangeKeyValue(key windows.Handle, watchSubtree bool, notifyFilter uint32, event windows.Handle, asynchronous bool) (regerrno error) {
var _p0 uint32
if watchSubtree {
_p0 = 1
} else {
_p0 = 0
}
var _p1 uint32
if asynchronous {
_p1 = 1
} else {
_p1 = 0
}
r0, _, _ := syscall.Syscall6(procRegNotifyChangeKeyValue.Addr(), 5, uintptr(key), uintptr(_p0), uintptr(notifyFilter), uintptr(event), uintptr(_p1), 0)
if r0 != 0 {
regerrno = syscall.Errno(r0)
}
return
}

4
tun/wintun/ring_windows.go
View File

@ -103,8 +103,8 @@ func (descriptor *RingDescriptor) Close() {
}
}
func (wintun *Interface) Register(descriptor *RingDescriptor) (windows.Handle, error) {
handle, err := wintun.handle()
func (wintun *Adapter) Register(descriptor *RingDescriptor) (windows.Handle, error) {
handle, err := wintun.OpenAdapterDeviceObject()
if err != nil {
return 0, err
}

8
tun/wintun/setupapi/mksyscall.go
View File

@ -1,8 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package setupapi
//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zsetupapi_windows.go setupapi_windows.go

506
tun/wintun/setupapi/setupapi_windows.go
View File

@ -1,506 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package setupapi
import (
"encoding/binary"
"fmt"
"runtime"
"unsafe"
"golang.org/x/sys/windows"
"golang.org/x/sys/windows/registry"
)
//sys setupDiCreateDeviceInfoListEx(classGUID *windows.GUID, hwndParent uintptr, machineName *uint16, reserved uintptr) (handle DevInfo, err error) [failretval==DevInfo(windows.InvalidHandle)] = setupapi.SetupDiCreateDeviceInfoListExW
// SetupDiCreateDeviceInfoListEx function creates an empty device information set on a remote or a local computer and optionally associates the set with a device setup class.
func SetupDiCreateDeviceInfoListEx(classGUID *windows.GUID, hwndParent uintptr, machineName string) (deviceInfoSet DevInfo, err error) {
var machineNameUTF16 *uint16
if machineName != "" {
machineNameUTF16, err = windows.UTF16PtrFromString(machineName)
if err != nil {
return
}
}
return setupDiCreateDeviceInfoListEx(classGUID, hwndParent, machineNameUTF16, 0)
}
//sys setupDiGetDeviceInfoListDetail(deviceInfoSet DevInfo, deviceInfoSetDetailData *DevInfoListDetailData) (err error) = setupapi.SetupDiGetDeviceInfoListDetailW
// SetupDiGetDeviceInfoListDetail function retrieves information associated with a device information set including the class GUID, remote computer handle, and remote computer name.
func SetupDiGetDeviceInfoListDetail(deviceInfoSet DevInfo) (deviceInfoSetDetailData *DevInfoListDetailData, err error) {
data := &DevInfoListDetailData{}
data.size = sizeofDevInfoListDetailData
return data, setupDiGetDeviceInfoListDetail(deviceInfoSet, data)
}
// DeviceInfoListDetail method retrieves information associated with a device information set including the class GUID, remote computer handle, and remote computer name.
func (deviceInfoSet DevInfo) DeviceInfoListDetail() (*DevInfoListDetailData, error) {
return SetupDiGetDeviceInfoListDetail(deviceInfoSet)
}
//sys setupDiCreateDeviceInfo(deviceInfoSet DevInfo, DeviceName *uint16, classGUID *windows.GUID, DeviceDescription *uint16, hwndParent uintptr, CreationFlags DICD, deviceInfoData *DevInfoData) (err error) = setupapi.SetupDiCreateDeviceInfoW
// SetupDiCreateDeviceInfo function creates a new device information element and adds it as a new member to the specified device information set.
func SetupDiCreateDeviceInfo(deviceInfoSet DevInfo, deviceName string, classGUID *windows.GUID, deviceDescription string, hwndParent uintptr, creationFlags DICD) (deviceInfoData *DevInfoData, err error) {
deviceNameUTF16, err := windows.UTF16PtrFromString(deviceName)
if err != nil {
return
}
var deviceDescriptionUTF16 *uint16
if deviceDescription != "" {
deviceDescriptionUTF16, err = windows.UTF16PtrFromString(deviceDescription)
if err != nil {
return
}
}
data := &DevInfoData{}
data.size = uint32(unsafe.Sizeof(*data))
return data, setupDiCreateDeviceInfo(deviceInfoSet, deviceNameUTF16, classGUID, deviceDescriptionUTF16, hwndParent, creationFlags, data)
}
// CreateDeviceInfo method creates a new device information element and adds it as a new member to the specified device information set.
func (deviceInfoSet DevInfo) CreateDeviceInfo(deviceName string, classGUID *windows.GUID, deviceDescription string, hwndParent uintptr, creationFlags DICD) (*DevInfoData, error) {
return SetupDiCreateDeviceInfo(deviceInfoSet, deviceName, classGUID, deviceDescription, hwndParent, creationFlags)
}
//sys setupDiEnumDeviceInfo(deviceInfoSet DevInfo, memberIndex uint32, deviceInfoData *DevInfoData) (err error) = setupapi.SetupDiEnumDeviceInfo
// SetupDiEnumDeviceInfo function returns a DevInfoData structure that specifies a device information element in a device information set.
func SetupDiEnumDeviceInfo(deviceInfoSet DevInfo, memberIndex int) (*DevInfoData, error) {
data := &DevInfoData{}
data.size = uint32(unsafe.Sizeof(*data))
return data, setupDiEnumDeviceInfo(deviceInfoSet, uint32(memberIndex), data)
}
// EnumDeviceInfo method returns a DevInfoData structure that specifies a device information element in a device information set.
func (deviceInfoSet DevInfo) EnumDeviceInfo(memberIndex int) (*DevInfoData, error) {
return SetupDiEnumDeviceInfo(deviceInfoSet, memberIndex)
}
// SetupDiDestroyDeviceInfoList function deletes a device information set and frees all associated memory.
//sys SetupDiDestroyDeviceInfoList(deviceInfoSet DevInfo) (err error) = setupapi.SetupDiDestroyDeviceInfoList
// Close method deletes a device information set and frees all associated memory.
func (deviceInfoSet DevInfo) Close() error {
return SetupDiDestroyDeviceInfoList(deviceInfoSet)
}
//sys SetupDiBuildDriverInfoList(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverType SPDIT) (err error) = setupapi.SetupDiBuildDriverInfoList
// BuildDriverInfoList method builds a list of drivers that is associated with a specific device or with the global class driver list for a device information set.
func (deviceInfoSet DevInfo) BuildDriverInfoList(deviceInfoData *DevInfoData, driverType SPDIT) error {
return SetupDiBuildDriverInfoList(deviceInfoSet, deviceInfoData, driverType)
}
//sys SetupDiCancelDriverInfoSearch(deviceInfoSet DevInfo) (err error) = setupapi.SetupDiCancelDriverInfoSearch
// CancelDriverInfoSearch method cancels a driver list search that is currently in progress in a different thread.
func (deviceInfoSet DevInfo) CancelDriverInfoSearch() error {
return SetupDiCancelDriverInfoSearch(deviceInfoSet)
}
//sys setupDiEnumDriverInfo(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverType SPDIT, memberIndex uint32, driverInfoData *DrvInfoData) (err error) = setupapi.SetupDiEnumDriverInfoW
// SetupDiEnumDriverInfo function enumerates the members of a driver list.
func SetupDiEnumDriverInfo(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverType SPDIT, memberIndex int) (*DrvInfoData, error) {
data := &DrvInfoData{}
data.size = uint32(unsafe.Sizeof(*data))
return data, setupDiEnumDriverInfo(deviceInfoSet, deviceInfoData, driverType, uint32(memberIndex), data)
}
// EnumDriverInfo method enumerates the members of a driver list.
func (deviceInfoSet DevInfo) EnumDriverInfo(deviceInfoData *DevInfoData, driverType SPDIT, memberIndex int) (*DrvInfoData, error) {
return SetupDiEnumDriverInfo(deviceInfoSet, deviceInfoData, driverType, memberIndex)
}
//sys setupDiGetSelectedDriver(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverInfoData *DrvInfoData) (err error) = setupapi.SetupDiGetSelectedDriverW
// SetupDiGetSelectedDriver function retrieves the selected driver for a device information set or a particular device information element.
func SetupDiGetSelectedDriver(deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (*DrvInfoData, error) {
data := &DrvInfoData{}
data.size = uint32(unsafe.Sizeof(*data))
return data, setupDiGetSelectedDriver(deviceInfoSet, deviceInfoData, data)
}
// SelectedDriver method retrieves the selected driver for a device information set or a particular device information element.
func (deviceInfoSet DevInfo) SelectedDriver(deviceInfoData *DevInfoData) (*DrvInfoData, error) {
return SetupDiGetSelectedDriver(deviceInfoSet, deviceInfoData)
}
//sys SetupDiSetSelectedDriver(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverInfoData *DrvInfoData) (err error) = setupapi.SetupDiSetSelectedDriverW
// SetSelectedDriver method sets, or resets, the selected driver for a device information element or the selected class driver for a device information set.
func (deviceInfoSet DevInfo) SetSelectedDriver(deviceInfoData *DevInfoData, driverInfoData *DrvInfoData) error {
return SetupDiSetSelectedDriver(deviceInfoSet, deviceInfoData, driverInfoData)
}
//sys setupDiGetDriverInfoDetail(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverInfoData *DrvInfoData, driverInfoDetailData *DrvInfoDetailData, driverInfoDetailDataSize uint32, requiredSize *uint32) (err error) = setupapi.SetupDiGetDriverInfoDetailW
// SetupDiGetDriverInfoDetail function retrieves driver information detail for a device information set or a particular device information element in the device information set.
func SetupDiGetDriverInfoDetail(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverInfoData *DrvInfoData) (*DrvInfoDetailData, error) {
reqSize := uint32(2048)
for {
buf := make([]byte, reqSize)
data := (*DrvInfoDetailData)(unsafe.Pointer(&buf[0]))
data.size = sizeofDrvInfoDetailData
err := setupDiGetDriverInfoDetail(deviceInfoSet, deviceInfoData, driverInfoData, data, uint32(len(buf)), &reqSize)
if err == windows.ERROR_INSUFFICIENT_BUFFER {
continue
}
if err != nil {
return nil, err
}
data.size = reqSize
return data, nil
}
}
// DriverInfoDetail method retrieves driver information detail for a device information set or a particular device information element in the device information set.
func (deviceInfoSet DevInfo) DriverInfoDetail(deviceInfoData *DevInfoData, driverInfoData *DrvInfoData) (*DrvInfoDetailData, error) {
return SetupDiGetDriverInfoDetail(deviceInfoSet, deviceInfoData, driverInfoData)
}
//sys SetupDiDestroyDriverInfoList(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverType SPDIT) (err error) = setupapi.SetupDiDestroyDriverInfoList
// DestroyDriverInfoList method deletes a driver list.
func (deviceInfoSet DevInfo) DestroyDriverInfoList(deviceInfoData *DevInfoData, driverType SPDIT) error {
return SetupDiDestroyDriverInfoList(deviceInfoSet, deviceInfoData, driverType)
}
//sys setupDiGetClassDevsEx(classGUID *windows.GUID, Enumerator *uint16, hwndParent uintptr, Flags DIGCF, deviceInfoSet DevInfo, machineName *uint16, reserved uintptr) (handle DevInfo, err error) [failretval==DevInfo(windows.InvalidHandle)] = setupapi.SetupDiGetClassDevsExW
// SetupDiGetClassDevsEx function returns a handle to a device information set that contains requested device information elements for a local or a remote computer.
func SetupDiGetClassDevsEx(classGUID *windows.GUID, enumerator string, hwndParent uintptr, flags DIGCF, deviceInfoSet DevInfo, machineName string) (handle DevInfo, err error) {
var enumeratorUTF16 *uint16
if enumerator != "" {
enumeratorUTF16, err = windows.UTF16PtrFromString(enumerator)
if err != nil {
return
}
}
var machineNameUTF16 *uint16
if machineName != "" {
machineNameUTF16, err = windows.UTF16PtrFromString(machineName)
if err != nil {
return
}
}
return setupDiGetClassDevsEx(classGUID, enumeratorUTF16, hwndParent, flags, deviceInfoSet, machineNameUTF16, 0)
}
// SetupDiCallClassInstaller function calls the appropriate class installer, and any registered co-installers, with the specified installation request (DIF code).
//sys SetupDiCallClassInstaller(installFunction DI_FUNCTION, deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (err error) = setupapi.SetupDiCallClassInstaller
// CallClassInstaller member calls the appropriate class installer, and any registered co-installers, with the specified installation request (DIF code).
func (deviceInfoSet DevInfo) CallClassInstaller(installFunction DI_FUNCTION, deviceInfoData *DevInfoData) error {
return SetupDiCallClassInstaller(installFunction, deviceInfoSet, deviceInfoData)
}
//sys setupDiOpenDevRegKey(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, Scope DICS_FLAG, HwProfile uint32, KeyType DIREG, samDesired uint32) (key windows.Handle, err error) [failretval==windows.InvalidHandle] = setupapi.SetupDiOpenDevRegKey
// SetupDiOpenDevRegKey function opens a registry key for device-specific configuration information.
func SetupDiOpenDevRegKey(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, scope DICS_FLAG, hwProfile uint32, keyType DIREG, samDesired uint32) (registry.Key, error) {
handle, err := setupDiOpenDevRegKey(deviceInfoSet, deviceInfoData, scope, hwProfile, keyType, samDesired)
return registry.Key(handle), err
}
// OpenDevRegKey method opens a registry key for device-specific configuration information.
func (deviceInfoSet DevInfo) OpenDevRegKey(DeviceInfoData *DevInfoData, Scope DICS_FLAG, HwProfile uint32, KeyType DIREG, samDesired uint32) (registry.Key, error) {
return SetupDiOpenDevRegKey(deviceInfoSet, DeviceInfoData, Scope, HwProfile, KeyType, samDesired)
}
//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.
func SetupDiGetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, property SPDRP) (value interface{}, err error) {
reqSize := uint32(256)
for {
var dataType uint32
buf := make([]byte, reqSize)
err = setupDiGetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property, &dataType, &buf[0], uint32(len(buf)), &reqSize)
if err == windows.ERROR_INSUFFICIENT_BUFFER {
continue
}
if err != nil {
return
}
return getRegistryValue(buf[:reqSize], dataType)
}
}
func getRegistryValue(buf []byte, dataType uint32) (interface{}, error) {
switch dataType {
case windows.REG_SZ:
ret := windows.UTF16ToString(bufToUTF16(buf))
runtime.KeepAlive(buf)
return ret, nil
case windows.REG_EXPAND_SZ:
ret, err := registry.ExpandString(windows.UTF16ToString(bufToUTF16(buf)))
runtime.KeepAlive(buf)
return ret, err
case windows.REG_BINARY:
return buf, nil
case windows.REG_DWORD_LITTLE_ENDIAN:
return binary.LittleEndian.Uint32(buf), nil
case windows.REG_DWORD_BIG_ENDIAN:
return binary.BigEndian.Uint32(buf), nil
case windows.REG_MULTI_SZ:
bufW := bufToUTF16(buf)
a := []string{}
for i := 0; i < len(bufW); {
j := i + wcslen(bufW[i:])
if i < j {
a = append(a, windows.UTF16ToString(bufW[i:j]))
}
i = j + 1
}
runtime.KeepAlive(buf)
return a, nil
case windows.REG_QWORD_LITTLE_ENDIAN:
return binary.LittleEndian.Uint64(buf), nil
default:
return nil, fmt.Errorf("Unsupported registry value type: %v", dataType)
}
}
// bufToUTF16 function reinterprets []byte buffer as []uint16
func bufToUTF16(buf []byte) []uint16 {
sl := struct {
addr *uint16
len int
cap int
}{(*uint16)(unsafe.Pointer(&buf[0])), len(buf) / 2, cap(buf) / 2}
return *(*[]uint16)(unsafe.Pointer(&sl))
}
// utf16ToBuf function reinterprets []uint16 as []byte
func utf16ToBuf(buf []uint16) []byte {
sl := struct {
addr *byte
len int
cap int
}{(*byte)(unsafe.Pointer(&buf[0])), len(buf) * 2, cap(buf) * 2}
return *(*[]byte)(unsafe.Pointer(&sl))
}
func wcslen(str []uint16) int {
for i := 0; i < len(str); i++ {
if str[i] == 0 {
return i
}
}
return len(str)
}
// DeviceRegistryProperty method retrieves a specified Plug and Play device property.
func (deviceInfoSet DevInfo) DeviceRegistryProperty(deviceInfoData *DevInfoData, property SPDRP) (interface{}, error) {
return SetupDiGetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property)
}
//sys setupDiSetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, property SPDRP, propertyBuffer *byte, propertyBufferSize uint32) (err error) = setupapi.SetupDiSetDeviceRegistryPropertyW
// SetupDiSetDeviceRegistryProperty function sets a Plug and Play device property for a device.
func SetupDiSetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, property SPDRP, propertyBuffers []byte) error {
return setupDiSetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property, &propertyBuffers[0], uint32(len(propertyBuffers)))
}
// SetDeviceRegistryProperty function sets a Plug and Play device property for a device.
func (deviceInfoSet DevInfo) SetDeviceRegistryProperty(deviceInfoData *DevInfoData, property SPDRP, propertyBuffers []byte) error {
return SetupDiSetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property, propertyBuffers)
}
// SetDeviceRegistryPropertyString method sets a Plug and Play device property string for a device.
func (deviceInfoSet DevInfo) SetDeviceRegistryPropertyString(deviceInfoData *DevInfoData, property SPDRP, str string) error {
str16, err := windows.UTF16FromString(str)
if err != nil {
return err
}
err = SetupDiSetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property, utf16ToBuf(append(str16, 0)))
runtime.KeepAlive(str16)
return err
}
//sys setupDiGetDeviceInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, deviceInstallParams *DevInstallParams) (err error) = setupapi.SetupDiGetDeviceInstallParamsW
// SetupDiGetDeviceInstallParams function retrieves device installation parameters for a device information set or a particular device information element.
func SetupDiGetDeviceInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (*DevInstallParams, error) {
params := &DevInstallParams{}
params.size = uint32(unsafe.Sizeof(*params))
return params, setupDiGetDeviceInstallParams(deviceInfoSet, deviceInfoData, params)
}
// DeviceInstallParams method retrieves device installation parameters for a device information set or a particular device information element.
func (deviceInfoSet DevInfo) DeviceInstallParams(deviceInfoData *DevInfoData) (*DevInstallParams, error) {
return SetupDiGetDeviceInstallParams(deviceInfoSet, deviceInfoData)
}
//sys setupDiGetDeviceInstanceId(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, instanceId *uint16, instanceIdSize uint32, instanceIdRequiredSize *uint32) (err error) = setupapi.SetupDiGetDeviceInstanceIdW
// SetupDiGetDeviceInstanceId function retrieves the instance ID of the device.
func SetupDiGetDeviceInstanceId(deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (string, error) {
reqSize := uint32(1024)
for {
buf := make([]uint16, reqSize)
err := setupDiGetDeviceInstanceId(deviceInfoSet, deviceInfoData, &buf[0], uint32(len(buf)), &reqSize)
if err == windows.ERROR_INSUFFICIENT_BUFFER {
continue
}
if err != nil {
return "", err
}
return windows.UTF16ToString(buf), nil
}
}
// DeviceInstanceID method retrieves the instance ID of the device.
func (deviceInfoSet DevInfo) DeviceInstanceID(deviceInfoData *DevInfoData) (string, error) {
return SetupDiGetDeviceInstanceId(deviceInfoSet, deviceInfoData)
}
// SetupDiGetClassInstallParams function retrieves class installation parameters for a device information set or a particular device information element.
//sys SetupDiGetClassInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, classInstallParams *ClassInstallHeader, classInstallParamsSize uint32, requiredSize *uint32) (err error) = setupapi.SetupDiGetClassInstallParamsW
// ClassInstallParams method retrieves class installation parameters for a device information set or a particular device information element.
func (deviceInfoSet DevInfo) ClassInstallParams(deviceInfoData *DevInfoData, classInstallParams *ClassInstallHeader, classInstallParamsSize uint32, requiredSize *uint32) error {
return SetupDiGetClassInstallParams(deviceInfoSet, deviceInfoData, classInstallParams, classInstallParamsSize, requiredSize)
}
//sys SetupDiSetDeviceInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, deviceInstallParams *DevInstallParams) (err error) = setupapi.SetupDiSetDeviceInstallParamsW
// SetDeviceInstallParams member sets device installation parameters for a device information set or a particular device information element.
func (deviceInfoSet DevInfo) SetDeviceInstallParams(deviceInfoData *DevInfoData, deviceInstallParams *DevInstallParams) error {
return SetupDiSetDeviceInstallParams(deviceInfoSet, deviceInfoData, deviceInstallParams)
}
// SetupDiSetClassInstallParams function sets or clears class install parameters for a device information set or a particular device information element.
//sys SetupDiSetClassInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, classInstallParams *ClassInstallHeader, classInstallParamsSize uint32) (err error) = setupapi.SetupDiSetClassInstallParamsW
// SetClassInstallParams method sets or clears class install parameters for a device information set or a particular device information element.
func (deviceInfoSet DevInfo) SetClassInstallParams(deviceInfoData *DevInfoData, classInstallParams *ClassInstallHeader, classInstallParamsSize uint32) error {
return SetupDiSetClassInstallParams(deviceInfoSet, deviceInfoData, classInstallParams, classInstallParamsSize)
}
//sys setupDiClassNameFromGuidEx(classGUID *windows.GUID, className *uint16, classNameSize uint32, requiredSize *uint32, machineName *uint16, reserved uintptr) (err error) = setupapi.SetupDiClassNameFromGuidExW
// SetupDiClassNameFromGuidEx function retrieves the class name associated with a class GUID. The class can be installed on a local or remote computer.
func SetupDiClassNameFromGuidEx(classGUID *windows.GUID, machineName string) (className string, err error) {
var classNameUTF16 [MAX_CLASS_NAME_LEN]uint16
var machineNameUTF16 *uint16
if machineName != "" {
machineNameUTF16, err = windows.UTF16PtrFromString(machineName)
if err != nil {
return
}
}
err = setupDiClassNameFromGuidEx(classGUID, &classNameUTF16[0], MAX_CLASS_NAME_LEN, nil, machineNameUTF16, 0)
if err != nil {
return
}
className = windows.UTF16ToString(classNameUTF16[:])
return
}
//sys setupDiClassGuidsFromNameEx(className *uint16, classGuidList *windows.GUID, classGuidListSize uint32, requiredSize *uint32, machineName *uint16, reserved uintptr) (err error) = setupapi.SetupDiClassGuidsFromNameExW
// SetupDiClassGuidsFromNameEx function retrieves the GUIDs associated with the specified class name. This resulting list contains the classes currently installed on a local or remote computer.
func SetupDiClassGuidsFromNameEx(className string, machineName string) ([]windows.GUID, error) {
classNameUTF16, err := windows.UTF16PtrFromString(className)
if err != nil {
return nil, err
}
var machineNameUTF16 *uint16
if machineName != "" {
machineNameUTF16, err = windows.UTF16PtrFromString(machineName)
if err != nil {
return nil, err
}
}
reqSize := uint32(4)
for {
buf := make([]windows.GUID, reqSize)
err = setupDiClassGuidsFromNameEx(classNameUTF16, &buf[0], uint32(len(buf)), &reqSize, machineNameUTF16, 0)
if err == windows.ERROR_INSUFFICIENT_BUFFER {
continue
}
if err != nil {
return nil, err
}
return buf[:reqSize], nil
}
}
//sys setupDiGetSelectedDevice(deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (err error) = setupapi.SetupDiGetSelectedDevice
// SetupDiGetSelectedDevice function retrieves the selected device information element in a device information set.
func SetupDiGetSelectedDevice(deviceInfoSet DevInfo) (*DevInfoData, error) {
data := &DevInfoData{}
data.size = uint32(unsafe.Sizeof(*data))
return data, setupDiGetSelectedDevice(deviceInfoSet, data)
}
// SelectedDevice method retrieves the selected device information element in a device information set.
func (deviceInfoSet DevInfo) SelectedDevice() (*DevInfoData, error) {
return SetupDiGetSelectedDevice(deviceInfoSet)
}
// SetupDiSetSelectedDevice function sets a device information element as the selected member of a device information set. This function is typically used by an installation wizard.
//sys SetupDiSetSelectedDevice(deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (err error) = setupapi.SetupDiSetSelectedDevice
// SetSelectedDevice method sets a device information element as the selected member of a device information set. This function is typically used by an installation wizard.
func (deviceInfoSet DevInfo) SetSelectedDevice(deviceInfoData *DevInfoData) error {
return SetupDiSetSelectedDevice(deviceInfoSet, deviceInfoData)
}
//sys cm_Get_Device_Interface_List_Size(len *uint32, interfaceClass *windows.GUID, deviceID *uint16, flags uint32) (ret uint32) = CfgMgr32.CM_Get_Device_Interface_List_SizeW
//sys cm_Get_Device_Interface_List(interfaceClass *windows.GUID, deviceID *uint16, buffer *uint16, bufferLen uint32, flags uint32) (ret uint32) = CfgMgr32.CM_Get_Device_Interface_ListW
func CM_Get_Device_Interface_List(deviceID string, interfaceClass *windows.GUID, flags uint32) ([]string, error) {
deviceID16, err := windows.UTF16PtrFromString(deviceID)
if err != nil {
return nil, err
}
var buf []uint16
var buflen uint32
for {
if ret := cm_Get_Device_Interface_List_Size(&buflen, interfaceClass, deviceID16, flags); ret != CR_SUCCESS {
return nil, fmt.Errorf("CfgMgr error: 0x%x", ret)
}
buf = make([]uint16, buflen)
if ret := cm_Get_Device_Interface_List(interfaceClass, deviceID16, &buf[0], buflen, flags); ret == CR_SUCCESS {
break
} else if ret != CR_BUFFER_SMALL {
return nil, fmt.Errorf("CfgMgr error: 0x%x", ret)
}
}
var interfaces []string
for i := 0; i < len(buf); {
j := i + wcslen(buf[i:])
if i < j {
interfaces = append(interfaces, windows.UTF16ToString(buf[i:j]))
}
i = j + 1
}
if interfaces == nil {
return nil, fmt.Errorf("no interfaces found")
}
return interfaces, nil
}

488
tun/wintun/setupapi/setupapi_windows_test.go
View File

@ -1,488 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package setupapi
import (
"runtime"
"strings"
"testing"
"golang.org/x/sys/windows"
)
var deviceClassNetGUID = windows.GUID{Data1: 0x4d36e972, Data2: 0xe325, Data3: 0x11ce, Data4: [8]byte{0xbf, 0xc1, 0x08, 0x00, 0x2b, 0xe1, 0x03, 0x18}}
var computerName string
func init() {
computerName, _ = windows.ComputerName()
}
func TestSetupDiCreateDeviceInfoListEx(t *testing.T) {
devInfoList, err := SetupDiCreateDeviceInfoListEx(&deviceClassNetGUID, 0, "")
if err != nil {
t.Errorf("Error calling SetupDiCreateDeviceInfoListEx: %s", err.Error())
} else {
devInfoList.Close()
}
devInfoList, err = SetupDiCreateDeviceInfoListEx(&deviceClassNetGUID, 0, computerName)
if err != nil {
t.Errorf("Error calling SetupDiCreateDeviceInfoListEx: %s", err.Error())
} else {
devInfoList.Close()
}
devInfoList, err = SetupDiCreateDeviceInfoListEx(nil, 0, "")
if err != nil {
t.Errorf("Error calling SetupDiCreateDeviceInfoListEx(nil): %s", err.Error())
} else {
devInfoList.Close()
}
}
func TestSetupDiGetDeviceInfoListDetail(t *testing.T) {
devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, DIGCF_PRESENT, DevInfo(0), "")
if err != nil {
t.Errorf("Error calling SetupDiGetClassDevsEx: %s", err.Error())
}
defer devInfoList.Close()
data, err := devInfoList.DeviceInfoListDetail()
if err != nil {
t.Errorf("Error calling SetupDiGetDeviceInfoListDetail: %s", err.Error())
} else {
if data.ClassGUID != deviceClassNetGUID {
t.Error("SetupDiGetDeviceInfoListDetail returned different class GUID")
}
if data.RemoteMachineHandle != windows.Handle(0) {
t.Error("SetupDiGetDeviceInfoListDetail returned non-NULL remote machine handle")
}
if data.RemoteMachineName() != "" {
t.Error("SetupDiGetDeviceInfoListDetail returned non-NULL remote machine name")
}
}
devInfoList, err = SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, DIGCF_PRESENT, DevInfo(0), computerName)
if err != nil {
t.Errorf("Error calling SetupDiGetClassDevsEx: %s", err.Error())
}
defer devInfoList.Close()
data, err = devInfoList.DeviceInfoListDetail()
if err != nil {
t.Errorf("Error calling SetupDiGetDeviceInfoListDetail: %s", err.Error())
} else {
if data.ClassGUID != deviceClassNetGUID {
t.Error("SetupDiGetDeviceInfoListDetail returned different class GUID")
}
if data.RemoteMachineHandle == windows.Handle(0) {
t.Error("SetupDiGetDeviceInfoListDetail returned NULL remote machine handle")
}
if data.RemoteMachineName() != computerName {
t.Error("SetupDiGetDeviceInfoListDetail returned different remote machine name")
}
}
data = &DevInfoListDetailData{}
data.SetRemoteMachineName("foobar")
if data.RemoteMachineName() != "foobar" {
t.Error("DevInfoListDetailData.(Get|Set)RemoteMachineName() differ")
}
}
func TestSetupDiCreateDeviceInfo(t *testing.T) {
devInfoList, err := SetupDiCreateDeviceInfoListEx(&deviceClassNetGUID, 0, computerName)
if err != nil {
t.Errorf("Error calling SetupDiCreateDeviceInfoListEx: %s", err.Error())
}
defer devInfoList.Close()
deviceClassNetName, err := SetupDiClassNameFromGuidEx(&deviceClassNetGUID, computerName)
if err != nil {
t.Errorf("Error calling SetupDiClassNameFromGuidEx: %s", err.Error())
}
devInfoData, err := devInfoList.CreateDeviceInfo(deviceClassNetName, &deviceClassNetGUID, "This is a test device", 0, DICD_GENERATE_ID)
if err != nil {
// Access denied is expected, as the SetupDiCreateDeviceInfo() require elevation to succeed.
if errWin, ok := err.(windows.Errno); !ok || errWin != windows.ERROR_ACCESS_DENIED {
t.Errorf("Error calling SetupDiCreateDeviceInfo: %s", err.Error())
}
} else if devInfoData.ClassGUID != deviceClassNetGUID {
t.Error("SetupDiCreateDeviceInfo returned different class GUID")
}
}
func TestSetupDiEnumDeviceInfo(t *testing.T) {
devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, DIGCF_PRESENT, DevInfo(0), "")
if err != nil {
t.Errorf("Error calling SetupDiGetClassDevsEx: %s", err.Error())
}
defer devInfoList.Close()
for i := 0; true; i++ {
data, err := devInfoList.EnumDeviceInfo(i)
if err != nil {
if errWin, ok := err.(windows.Errno); ok && errWin == windows.ERROR_NO_MORE_ITEMS {
break
}
continue
}
if data.ClassGUID != deviceClassNetGUID {
t.Error("SetupDiEnumDeviceInfo returned different class GUID")
}
_, err = devInfoList.DeviceInstanceID(data)
if err != nil {
t.Errorf("Error calling SetupDiGetDeviceInstanceId: %s", err.Error())
}
}
}
func TestDevInfo_BuildDriverInfoList(t *testing.T) {
devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, DIGCF_PRESENT, DevInfo(0), "")
if err != nil {
t.Errorf("Error calling SetupDiGetClassDevsEx: %s", err.Error())
}
defer devInfoList.Close()
for i := 0; true; i++ {
deviceData, err := devInfoList.EnumDeviceInfo(i)
if err != nil {
if errWin, ok := err.(windows.Errno); ok && errWin == windows.ERROR_NO_MORE_ITEMS {
break
}
continue
}
const driverType SPDIT = SPDIT_COMPATDRIVER
err = devInfoList.BuildDriverInfoList(deviceData, driverType)
if err != nil {
t.Errorf("Error calling SetupDiBuildDriverInfoList: %s", err.Error())
}
defer devInfoList.DestroyDriverInfoList(deviceData, driverType)
var selectedDriverData *DrvInfoData
for j := 0; true; j++ {
driverData, err := devInfoList.EnumDriverInfo(deviceData, driverType, j)
if err != nil {
if errWin, ok := err.(windows.Errno); ok && errWin == windows.ERROR_NO_MORE_ITEMS {
break
}
continue
}
if driverData.DriverType == 0 {
continue
}
if !driverData.IsNewer(windows.Filetime{}, 0) {
t.Error("Driver should have non-zero date and version")
}
if !driverData.IsNewer(windows.Filetime{HighDateTime: driverData.DriverDate.HighDateTime}, 0) {
t.Error("Driver should have non-zero date and version")
}
if driverData.IsNewer(windows.Filetime{HighDateTime: driverData.DriverDate.HighDateTime + 1}, 0) {
t.Error("Driver should report newer version on high-date-time")
}
if !driverData.IsNewer(windows.Filetime{HighDateTime: driverData.DriverDate.HighDateTime, LowDateTime: driverData.DriverDate.LowDateTime}, 0) {
t.Error("Driver should have non-zero version")
}
if driverData.IsNewer(windows.Filetime{HighDateTime: driverData.DriverDate.HighDateTime, LowDateTime: driverData.DriverDate.LowDateTime + 1}, 0) {
t.Error("Driver should report newer version on low-date-time")
}
if driverData.IsNewer(windows.Filetime{HighDateTime: driverData.DriverDate.HighDateTime, LowDateTime: driverData.DriverDate.LowDateTime}, driverData.DriverVersion) {
t.Error("Driver should not be newer than itself")
}
if driverData.IsNewer(windows.Filetime{HighDateTime: driverData.DriverDate.HighDateTime, LowDateTime: driverData.DriverDate.LowDateTime}, driverData.DriverVersion+1) {
t.Error("Driver should report newer version on version")
}
err = devInfoList.SetSelectedDriver(deviceData, driverData)
if err != nil {
t.Errorf("Error calling SetupDiSetSelectedDriver: %s", err.Error())
} else {
selectedDriverData = driverData
}
driverDetailData, err := devInfoList.DriverInfoDetail(deviceData, driverData)
if err != nil {
t.Errorf("Error calling SetupDiGetDriverInfoDetail: %s", err.Error())
}
if driverDetailData.IsCompatible("foobar-aab6e3a4-144e-4786-88d3-6cec361e1edd") {
t.Error("Invalid HWID compatibitlity reported")
}
if !driverDetailData.IsCompatible(strings.ToUpper(driverDetailData.HardwareID())) {
t.Error("HWID compatibitlity missed")
}
a := driverDetailData.CompatIDs()
for k := range a {
if !driverDetailData.IsCompatible(strings.ToUpper(a[k])) {
t.Error("HWID compatibitlity missed")
}
}
}
selectedDriverData2, err := devInfoList.SelectedDriver(deviceData)
if err != nil {
t.Errorf("Error calling SetupDiGetSelectedDriver: %s", err.Error())
} else if *selectedDriverData != *selectedDriverData2 {
t.Error("SetupDiGetSelectedDriver should return driver selected with SetupDiSetSelectedDriver")
}
}
data := &DrvInfoData{}
data.SetDescription("foobar")
if data.Description() != "foobar" {
t.Error("DrvInfoData.(Get|Set)Description() differ")
}
data.SetMfgName("foobar")
if data.MfgName() != "foobar" {
t.Error("DrvInfoData.(Get|Set)MfgName() differ")
}
data.SetProviderName("foobar")
if data.ProviderName() != "foobar" {
t.Error("DrvInfoData.(Get|Set)ProviderName() differ")
}
}
func TestSetupDiGetClassDevsEx(t *testing.T) {
devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "PCI", 0, DIGCF_PRESENT, DevInfo(0), computerName)
if err != nil {
t.Errorf("Error calling SetupDiGetClassDevsEx: %s", err.Error())
} else {
devInfoList.Close()
}
devInfoList, err = SetupDiGetClassDevsEx(nil, "", 0, DIGCF_PRESENT, DevInfo(0), "")
if err != nil {
if errWin, ok := err.(windows.Errno); !ok || errWin != windows.ERROR_INVALID_PARAMETER {
t.Errorf("SetupDiGetClassDevsEx(nil, ...) should fail with ERROR_INVALID_PARAMETER")
}
} else {
devInfoList.Close()
t.Errorf("SetupDiGetClassDevsEx(nil, ...) should fail")
}
}
func TestSetupDiOpenDevRegKey(t *testing.T) {
devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, DIGCF_PRESENT, DevInfo(0), "")
if err != nil {
t.Errorf("Error calling SetupDiGetClassDevsEx: %s", err.Error())
}
defer devInfoList.Close()
for i := 0; true; i++ {
data, err := devInfoList.EnumDeviceInfo(i)
if err != nil {
if errWin, ok := err.(windows.Errno); ok && errWin == windows.ERROR_NO_MORE_ITEMS {
break
}
continue
}
key, err := devInfoList.OpenDevRegKey(data, DICS_FLAG_GLOBAL, 0, DIREG_DRV, windows.KEY_READ)
if err != nil {
t.Errorf("Error calling SetupDiOpenDevRegKey: %s", err.Error())
}
defer key.Close()
}
}
func TestSetupDiGetDeviceRegistryProperty(t *testing.T) {
devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, DIGCF_PRESENT, DevInfo(0), "")
if err != nil {
t.Errorf("Error calling SetupDiGetClassDevsEx: %s", err.Error())
}
defer devInfoList.Close()
for i := 0; true; i++ {
data, err := devInfoList.EnumDeviceInfo(i)
if err != nil {
if errWin, ok := err.(windows.Errno); ok && errWin == windows.ERROR_NO_MORE_ITEMS {
break
}
continue
}
val, err := devInfoList.DeviceRegistryProperty(data, SPDRP_CLASS)
if err != nil {
t.Errorf("Error calling SetupDiGetDeviceRegistryProperty(SPDRP_CLASS): %s", err.Error())
} else if class, ok := val.(string); !ok || strings.ToLower(class) != "net" {
t.Errorf("SetupDiGetDeviceRegistryProperty(SPDRP_CLASS) should return \"Net\"")
}
val, err = devInfoList.DeviceRegistryProperty(data, SPDRP_CLASSGUID)
if err != nil {
t.Errorf("Error calling SetupDiGetDeviceRegistryProperty(SPDRP_CLASSGUID): %s", err.Error())
} else if valStr, ok := val.(string); !ok {
t.Errorf("SetupDiGetDeviceRegistryProperty(SPDRP_CLASSGUID) should return string")
} else {
classGUID, err := windows.GUIDFromString(valStr)
if err != nil {
t.Errorf("Error parsing GUID returned by SetupDiGetDeviceRegistryProperty(SPDRP_CLASSGUID): %s", err.Error())
} else if classGUID != deviceClassNetGUID {
t.Errorf("SetupDiGetDeviceRegistryProperty(SPDRP_CLASSGUID) should return %x", deviceClassNetGUID)
}
}
val, err = devInfoList.DeviceRegistryProperty(data, SPDRP_COMPATIBLEIDS)
if err != nil {
// Some devices have no SPDRP_COMPATIBLEIDS.
if errWin, ok := err.(windows.Errno); !ok || errWin != windows.ERROR_INVALID_DATA {
t.Errorf("Error calling SetupDiGetDeviceRegistryProperty(SPDRP_COMPATIBLEIDS): %s", err.Error())
}
}
val, err = devInfoList.DeviceRegistryProperty(data, SPDRP_CONFIGFLAGS)
if err != nil {
t.Errorf("Error calling SetupDiGetDeviceRegistryProperty(SPDRP_CONFIGFLAGS): %s", err.Error())
}
val, err = devInfoList.DeviceRegistryProperty(data, SPDRP_DEVICE_POWER_DATA)
if err != nil {
t.Errorf("Error calling SetupDiGetDeviceRegistryProperty(SPDRP_DEVICE_POWER_DATA): %s", err.Error())
}
}
}
func TestSetupDiGetDeviceInstallParams(t *testing.T) {
devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, DIGCF_PRESENT, DevInfo(0), "")
if err != nil {
t.Errorf("Error calling SetupDiGetClassDevsEx: %s", err.Error())
}
defer devInfoList.Close()
for i := 0; true; i++ {
data, err := devInfoList.EnumDeviceInfo(i)
if err != nil {
if errWin, ok := err.(windows.Errno); ok && errWin == windows.ERROR_NO_MORE_ITEMS {
break
}
continue
}
_, err = devInfoList.DeviceInstallParams(data)
if err != nil {
t.Errorf("Error calling SetupDiGetDeviceInstallParams: %s", err.Error())
}
}
params := &DevInstallParams{}
params.SetDriverPath("foobar")
if params.DriverPath() != "foobar" {
t.Error("DevInstallParams.(Get|Set)DriverPath() differ")
}
}
func TestSetupDiClassNameFromGuidEx(t *testing.T) {
deviceClassNetName, err := SetupDiClassNameFromGuidEx(&deviceClassNetGUID, "")
if err != nil {
t.Errorf("Error calling SetupDiClassNameFromGuidEx: %s", err.Error())
} else if strings.ToLower(deviceClassNetName) != "net" {
t.Errorf("SetupDiClassNameFromGuidEx(%x) should return \"Net\"", deviceClassNetGUID)
}
deviceClassNetName, err = SetupDiClassNameFromGuidEx(&deviceClassNetGUID, computerName)
if err != nil {
t.Errorf("Error calling SetupDiClassNameFromGuidEx: %s", err.Error())
} else if strings.ToLower(deviceClassNetName) != "net" {
t.Errorf("SetupDiClassNameFromGuidEx(%x) should return \"Net\"", deviceClassNetGUID)
}
_, err = SetupDiClassNameFromGuidEx(nil, "")
if err != nil {
if errWin, ok := err.(windows.Errno); !ok || errWin != windows.ERROR_INVALID_USER_BUFFER {
t.Errorf("SetupDiClassNameFromGuidEx(nil) should fail with ERROR_INVALID_USER_BUFFER")
}
} else {
t.Errorf("SetupDiClassNameFromGuidEx(nil) should fail")
}
}
func TestSetupDiClassGuidsFromNameEx(t *testing.T) {
ClassGUIDs, err := SetupDiClassGuidsFromNameEx("Net", "")
if err != nil {
t.Errorf("Error calling SetupDiClassGuidsFromNameEx: %s", err.Error())
} else {
found := false
for i := range ClassGUIDs {
if ClassGUIDs[i] == deviceClassNetGUID {
found = true
break
}
}
if !found {
t.Errorf("SetupDiClassGuidsFromNameEx(\"Net\") should return %x", deviceClassNetGUID)
}
}
ClassGUIDs, err = SetupDiClassGuidsFromNameEx("foobar-34274a51-a6e6-45f0-80d6-c62be96dd5fe", computerName)
if err != nil {
t.Errorf("Error calling SetupDiClassGuidsFromNameEx: %s", err.Error())
} else if len(ClassGUIDs) != 0 {
t.Errorf("SetupDiClassGuidsFromNameEx(\"foobar-34274a51-a6e6-45f0-80d6-c62be96dd5fe\") should return an empty GUID set")
}
}
func TestSetupDiGetSelectedDevice(t *testing.T) {
devInfoList, err := SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, DIGCF_PRESENT, DevInfo(0), "")
if err != nil {
t.Errorf("Error calling SetupDiGetClassDevsEx: %s", err.Error())
}
defer devInfoList.Close()
for i := 0; true; i++ {
data, err := devInfoList.EnumDeviceInfo(i)
if err != nil {
if errWin, ok := err.(windows.Errno); ok && errWin == windows.ERROR_NO_MORE_ITEMS {
break
}
continue
}
err = devInfoList.SetSelectedDevice(data)
if err != nil {
t.Errorf("Error calling SetupDiSetSelectedDevice: %s", err.Error())
}
data2, err := devInfoList.SelectedDevice()
if err != nil {
t.Errorf("Error calling SetupDiGetSelectedDevice: %s", err.Error())
} else if *data != *data2 {
t.Error("SetupDiGetSelectedDevice returned different data than was set by SetupDiSetSelectedDevice")
}
}
err = devInfoList.SetSelectedDevice(nil)
if err != nil {
if errWin, ok := err.(windows.Errno); !ok || errWin != windows.ERROR_INVALID_PARAMETER {
t.Errorf("SetupDiSetSelectedDevice(nil) should fail with ERROR_INVALID_USER_BUFFER")
}
} else {
t.Errorf("SetupDiSetSelectedDevice(nil) should fail")
}
}
func TestUTF16ToBuf(t *testing.T) {
buf := []uint16{0x0123, 0x4567, 0x89ab, 0xcdef}
buf2 := utf16ToBuf(buf)
if len(buf)*2 != len(buf2) ||
cap(buf)*2 != cap(buf2) ||
buf2[0] != 0x23 || buf2[1] != 0x01 ||
buf2[2] != 0x67 || buf2[3] != 0x45 ||
buf2[4] != 0xab || buf2[5] != 0x89 ||
buf2[6] != 0xef || buf2[7] != 0xcd {
t.Errorf("SetupDiSetSelectedDevice(nil) should fail with ERROR_INVALID_USER_BUFFER")
}
runtime.KeepAlive(buf)
}

13
tun/wintun/setupapi/types32_windows.go
View File

@ -1,13 +0,0 @@
// +build 386 arm
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package setupapi
const (
sizeofDevInfoListDetailData uint32 = 550
sizeofDrvInfoDetailData uint32 = 1570
)

13
tun/wintun/setupapi/types64_windows.go
View File

@ -1,13 +0,0 @@
// +build amd64 arm64
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package setupapi
const (
sizeofDevInfoListDetailData uint32 = 560
sizeofDrvInfoDetailData uint32 = 1584
)

568
tun/wintun/setupapi/types_windows.go
View File

@ -1,568 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package setupapi
import (
"strings"
"unsafe"
"golang.org/x/sys/windows"
)
const (
MAX_DEVICE_ID_LEN = 200
MAX_DEVNODE_ID_LEN = MAX_DEVICE_ID_LEN
MAX_GUID_STRING_LEN = 39 // 38 chars + terminator null
MAX_CLASS_NAME_LEN = 32
MAX_PROFILE_LEN = 80
MAX_CONFIG_VALUE = 9999
MAX_INSTANCE_VALUE = 9999
CONFIGMG_VERSION = 0x0400
)
//
// Define maximum string length constants
//
const (
ANYSIZE_ARRAY = 1
LINE_LEN = 256 // Windows 9x-compatible maximum for displayable strings coming from a device INF.
MAX_INF_STRING_LENGTH = 4096 // Actual maximum size of an INF string (including string substitutions).
MAX_INF_SECTION_NAME_LENGTH = 255 // For Windows 9x compatibility, INF section names should be constrained to 32 characters.
MAX_TITLE_LEN = 60
MAX_INSTRUCTION_LEN = 256
MAX_LABEL_LEN = 30
MAX_SERVICE_NAME_LEN = 256
MAX_SUBTITLE_LEN = 256
)
const (
// SP_MAX_MACHINENAME_LENGTH defines maximum length of a machine name in the format expected by ConfigMgr32 CM_Connect_Machine (i.e., "\\\\MachineName\0").
SP_MAX_MACHINENAME_LENGTH = windows.MAX_PATH + 3
)
// HSPFILEQ is type for setup file queue
type HSPFILEQ uintptr
// DevInfo holds reference to device information set
type DevInfo windows.Handle
// DevInfoData is a device information structure (references a device instance that is a member of a device information set)
type DevInfoData struct {
size uint32
ClassGUID windows.GUID
DevInst uint32 // DEVINST handle
_ uintptr
}
// DevInfoListDetailData is a structure for detailed information on a device information set (used for SetupDiGetDeviceInfoListDetail which supersedes the functionality of SetupDiGetDeviceInfoListClass).
type DevInfoListDetailData struct {
size uint32 // Warning: unsafe.Sizeof(DevInfoListDetailData) > sizeof(SP_DEVINFO_LIST_DETAIL_DATA) when GOARCH == 386 => use sizeofDevInfoListDetailData const.
ClassGUID windows.GUID
RemoteMachineHandle windows.Handle
remoteMachineName [SP_MAX_MACHINENAME_LENGTH]uint16
}
func (data *DevInfoListDetailData) RemoteMachineName() string {
return windows.UTF16ToString(data.remoteMachineName[:])
}
func (data *DevInfoListDetailData) SetRemoteMachineName(remoteMachineName string) error {
str, err := windows.UTF16FromString(remoteMachineName)
if err != nil {
return err
}
copy(data.remoteMachineName[:], str)
return nil
}
// DI_FUNCTION is function type for device installer
type DI_FUNCTION uint32
const (
DIF_SELECTDEVICE DI_FUNCTION = 0x00000001
DIF_INSTALLDEVICE DI_FUNCTION = 0x00000002
DIF_ASSIGNRESOURCES DI_FUNCTION = 0x00000003
DIF_PROPERTIES DI_FUNCTION = 0x00000004
DIF_REMOVE DI_FUNCTION = 0x00000005
DIF_FIRSTTIMESETUP DI_FUNCTION = 0x00000006
DIF_FOUNDDEVICE DI_FUNCTION = 0x00000007
DIF_SELECTCLASSDRIVERS DI_FUNCTION = 0x00000008
DIF_VALIDATECLASSDRIVERS DI_FUNCTION = 0x00000009
DIF_INSTALLCLASSDRIVERS DI_FUNCTION = 0x0000000A
DIF_CALCDISKSPACE DI_FUNCTION = 0x0000000B
DIF_DESTROYPRIVATEDATA DI_FUNCTION = 0x0000000C
DIF_VALIDATEDRIVER DI_FUNCTION = 0x0000000D
DIF_DETECT DI_FUNCTION = 0x0000000F
DIF_INSTALLWIZARD DI_FUNCTION = 0x00000010
DIF_DESTROYWIZARDDATA DI_FUNCTION = 0x00000011
DIF_PROPERTYCHANGE DI_FUNCTION = 0x00000012
DIF_ENABLECLASS DI_FUNCTION = 0x00000013
DIF_DETECTVERIFY DI_FUNCTION = 0x00000014
DIF_INSTALLDEVICEFILES DI_FUNCTION = 0x00000015
DIF_UNREMOVE DI_FUNCTION = 0x00000016
DIF_SELECTBESTCOMPATDRV DI_FUNCTION = 0x00000017
DIF_ALLOW_INSTALL DI_FUNCTION = 0x00000018
DIF_REGISTERDEVICE DI_FUNCTION = 0x00000019
DIF_NEWDEVICEWIZARD_PRESELECT DI_FUNCTION = 0x0000001A
DIF_NEWDEVICEWIZARD_SELECT DI_FUNCTION = 0x0000001B
DIF_NEWDEVICEWIZARD_PREANALYZE DI_FUNCTION = 0x0000001C
DIF_NEWDEVICEWIZARD_POSTANALYZE DI_FUNCTION = 0x0000001D
DIF_NEWDEVICEWIZARD_FINISHINSTALL DI_FUNCTION = 0x0000001E
DIF_INSTALLINTERFACES DI_FUNCTION = 0x00000020
DIF_DETECTCANCEL DI_FUNCTION = 0x00000021
DIF_REGISTER_COINSTALLERS DI_FUNCTION = 0x00000022
DIF_ADDPROPERTYPAGE_ADVANCED DI_FUNCTION = 0x00000023
DIF_ADDPROPERTYPAGE_BASIC DI_FUNCTION = 0x00000024
DIF_TROUBLESHOOTER DI_FUNCTION = 0x00000026
DIF_POWERMESSAGEWAKE DI_FUNCTION = 0x00000027
DIF_ADDREMOTEPROPERTYPAGE_ADVANCED DI_FUNCTION = 0x00000028
DIF_UPDATEDRIVER_UI DI_FUNCTION = 0x00000029
DIF_FINISHINSTALL_ACTION DI_FUNCTION = 0x0000002A
)
// DevInstallParams is device installation parameters structure (associated with a particular device information element, or globally with a device information set)
type DevInstallParams struct {
size uint32
Flags DI_FLAGS
FlagsEx DI_FLAGSEX
hwndParent uintptr
InstallMsgHandler uintptr
InstallMsgHandlerContext uintptr
FileQueue HSPFILEQ
_ uintptr
_ uint32
driverPath [windows.MAX_PATH]uint16
}
func (params *DevInstallParams) DriverPath() string {
return windows.UTF16ToString(params.driverPath[:])
}
func (params *DevInstallParams) SetDriverPath(driverPath string) error {
str, err := windows.UTF16FromString(driverPath)
if err != nil {
return err
}
copy(params.driverPath[:], str)
return nil
}
// DI_FLAGS is SP_DEVINSTALL_PARAMS.Flags values
type DI_FLAGS uint32
const (
// Flags for choosing a device
DI_SHOWOEM DI_FLAGS = 0x00000001 // support Other... button
DI_SHOWCOMPAT DI_FLAGS = 0x00000002 // show compatibility list
DI_SHOWCLASS DI_FLAGS = 0x00000004 // show class list
DI_SHOWALL DI_FLAGS = 0x00000007 // both class & compat list shown
DI_NOVCP DI_FLAGS = 0x00000008 // don't create a new copy queue--use caller-supplied FileQueue
DI_DIDCOMPAT DI_FLAGS = 0x00000010 // Searched for compatible devices
DI_DIDCLASS DI_FLAGS = 0x00000020 // Searched for class devices
DI_AUTOASSIGNRES DI_FLAGS = 0x00000040 // No UI for resources if possible
// Flags returned by DiInstallDevice to indicate need to reboot/restart
DI_NEEDRESTART DI_FLAGS = 0x00000080 // Reboot required to take effect
DI_NEEDREBOOT DI_FLAGS = 0x00000100 // ""
// Flags for device installation
DI_NOBROWSE DI_FLAGS = 0x00000200 // no Browse... in InsertDisk
// Flags set by DiBuildDriverInfoList
DI_MULTMFGS DI_FLAGS = 0x00000400 // Set if multiple manufacturers in class driver list
// Flag indicates that device is disabled
DI_DISABLED DI_FLAGS = 0x00000800 // Set if device disabled
// Flags for Device/Class Properties
DI_GENERALPAGE_ADDED DI_FLAGS = 0x00001000
DI_RESOURCEPAGE_ADDED DI_FLAGS = 0x00002000
// Flag to indicate the setting properties for this Device (or class) caused a change so the Dev Mgr UI probably needs to be updated.
DI_PROPERTIES_CHANGE DI_FLAGS = 0x00004000
// Flag to indicate that the sorting from the INF file should be used.
DI_INF_IS_SORTED DI_FLAGS = 0x00008000
// Flag to indicate that only the the INF specified by SP_DEVINSTALL_PARAMS.DriverPath should be searched.
DI_ENUMSINGLEINF DI_FLAGS = 0x00010000
// Flag that prevents ConfigMgr from removing/re-enumerating devices during device
// registration, installation, and deletion.
DI_DONOTCALLCONFIGMG DI_FLAGS = 0x00020000
// The following flag can be used to install a device disabled
DI_INSTALLDISABLED DI_FLAGS = 0x00040000
// Flag that causes SetupDiBuildDriverInfoList to build a device's compatible driver
// list from its existing class driver list, instead of the normal INF search.
DI_COMPAT_FROM_CLASS DI_FLAGS = 0x00080000
// This flag is set if the Class Install params should be used.
DI_CLASSINSTALLPARAMS DI_FLAGS = 0x00100000
// This flag is set if the caller of DiCallClassInstaller does NOT want the internal default action performed if the Class installer returns ERROR_DI_DO_DEFAULT.
DI_NODI_DEFAULTACTION DI_FLAGS = 0x00200000
// Flags for device installation
DI_QUIETINSTALL DI_FLAGS = 0x00800000 // don't confuse the user with questions or excess info
DI_NOFILECOPY DI_FLAGS = 0x01000000 // No file Copy necessary
DI_FORCECOPY DI_FLAGS = 0x02000000 // Force files to be copied from install path
DI_DRIVERPAGE_ADDED DI_FLAGS = 0x04000000 // Prop provider added Driver page.
DI_USECI_SELECTSTRINGS DI_FLAGS = 0x08000000 // Use Class Installer Provided strings in the Select Device Dlg
DI_OVERRIDE_INFFLAGS DI_FLAGS = 0x10000000 // Override INF flags
DI_PROPS_NOCHANGEUSAGE DI_FLAGS = 0x20000000 // No Enable/Disable in General Props
DI_NOSELECTICONS DI_FLAGS = 0x40000000 // No small icons in select device dialogs
DI_NOWRITE_IDS DI_FLAGS = 0x80000000 // Don't write HW & Compat IDs on install
)
// DI_FLAGSEX is SP_DEVINSTALL_PARAMS.FlagsEx values
type DI_FLAGSEX uint32
const (
DI_FLAGSEX_CI_FAILED DI_FLAGSEX = 0x00000004 // Failed to Load/Call class installer
DI_FLAGSEX_FINISHINSTALL_ACTION DI_FLAGSEX = 0x00000008 // Class/co-installer wants to get a DIF_FINISH_INSTALL action in client context.
DI_FLAGSEX_DIDINFOLIST DI_FLAGSEX = 0x00000010 // Did the Class Info List
DI_FLAGSEX_DIDCOMPATINFO DI_FLAGSEX = 0x00000020 // Did the Compat Info List
DI_FLAGSEX_FILTERCLASSES DI_FLAGSEX = 0x00000040
DI_FLAGSEX_SETFAILEDINSTALL DI_FLAGSEX = 0x00000080
DI_FLAGSEX_DEVICECHANGE DI_FLAGSEX = 0x00000100
DI_FLAGSEX_ALWAYSWRITEIDS DI_FLAGSEX = 0x00000200
DI_FLAGSEX_PROPCHANGE_PENDING DI_FLAGSEX = 0x00000400 // One or more device property sheets have had changes made to them, and need to have a DIF_PROPERTYCHANGE occur.
DI_FLAGSEX_ALLOWEXCLUDEDDRVS DI_FLAGSEX = 0x00000800
DI_FLAGSEX_NOUIONQUERYREMOVE DI_FLAGSEX = 0x00001000
DI_FLAGSEX_USECLASSFORCOMPAT DI_FLAGSEX = 0x00002000 // Use the device's class when building compat drv list. (Ignored if DI_COMPAT_FROM_CLASS flag is specified.)
DI_FLAGSEX_NO_DRVREG_MODIFY DI_FLAGSEX = 0x00008000 // Don't run AddReg and DelReg for device's software (driver) key.
DI_FLAGSEX_IN_SYSTEM_SETUP DI_FLAGSEX = 0x00010000 // Installation is occurring during initial system setup.
DI_FLAGSEX_INET_DRIVER DI_FLAGSEX = 0x00020000 // Driver came from Windows Update
DI_FLAGSEX_APPENDDRIVERLIST DI_FLAGSEX = 0x00040000 // Cause SetupDiBuildDriverInfoList to append a new driver list to an existing list.
DI_FLAGSEX_PREINSTALLBACKUP DI_FLAGSEX = 0x00080000 // not used
DI_FLAGSEX_BACKUPONREPLACE DI_FLAGSEX = 0x00100000 // not used
DI_FLAGSEX_DRIVERLIST_FROM_URL DI_FLAGSEX = 0x00200000 // build driver list from INF(s) retrieved from URL specified in SP_DEVINSTALL_PARAMS.DriverPath (empty string means Windows Update website)
DI_FLAGSEX_EXCLUDE_OLD_INET_DRIVERS DI_FLAGSEX = 0x00800000 // Don't include old Internet drivers when building a driver list. Ignored on Windows Vista and later.
DI_FLAGSEX_POWERPAGE_ADDED DI_FLAGSEX = 0x01000000 // class installer added their own power page
DI_FLAGSEX_FILTERSIMILARDRIVERS DI_FLAGSEX = 0x02000000 // only include similar drivers in class list
DI_FLAGSEX_INSTALLEDDRIVER DI_FLAGSEX = 0x04000000 // only add the installed driver to the class or compat driver list. Used in calls to SetupDiBuildDriverInfoList
DI_FLAGSEX_NO_CLASSLIST_NODE_MERGE DI_FLAGSEX = 0x08000000 // Don't remove identical driver nodes from the class list
DI_FLAGSEX_ALTPLATFORM_DRVSEARCH DI_FLAGSEX = 0x10000000 // Build driver list based on alternate platform information specified in associated file queue
DI_FLAGSEX_RESTART_DEVICE_ONLY DI_FLAGSEX = 0x20000000 // only restart the device drivers are being installed on as opposed to restarting all devices using those drivers.
DI_FLAGSEX_RECURSIVESEARCH DI_FLAGSEX = 0x40000000 // Tell SetupDiBuildDriverInfoList to do a recursive search
DI_FLAGSEX_SEARCH_PUBLISHED_INFS DI_FLAGSEX = 0x80000000 // Tell SetupDiBuildDriverInfoList to do a "published INF" search
)
// ClassInstallHeader is the first member of any class install parameters structure. It contains the device installation request code that defines the format of the rest of the install parameters structure.
type ClassInstallHeader struct {
size uint32
InstallFunction DI_FUNCTION
}
func MakeClassInstallHeader(installFunction DI_FUNCTION) *ClassInstallHeader {
hdr := &ClassInstallHeader{InstallFunction: installFunction}
hdr.size = uint32(unsafe.Sizeof(*hdr))
return hdr
}
// DICS_STATE specifies values indicating a change in a device's state
type DICS_STATE uint32
const (
DICS_ENABLE DICS_STATE = 0x00000001 // The device is being enabled.
DICS_DISABLE DICS_STATE = 0x00000002 // The device is being disabled.
DICS_PROPCHANGE DICS_STATE = 0x00000003 // The properties of the device have changed.
DICS_START DICS_STATE = 0x00000004 // The device is being started (if the request is for the currently active hardware profile).
DICS_STOP DICS_STATE = 0x00000005 // The device is being stopped. The driver stack will be unloaded and the CSCONFIGFLAG_DO_NOT_START flag will be set for the device.
)
// DICS_FLAG specifies the scope of a device property change
type DICS_FLAG uint32
const (
DICS_FLAG_GLOBAL DICS_FLAG = 0x00000001 // make change in all hardware profiles
DICS_FLAG_CONFIGSPECIFIC DICS_FLAG = 0x00000002 // make change in specified profile only
DICS_FLAG_CONFIGGENERAL DICS_FLAG = 0x00000004 // 1 or more hardware profile-specific changes to follow (obsolete)
)
// PropChangeParams is a structure corresponding to a DIF_PROPERTYCHANGE install function.
type PropChangeParams struct {
ClassInstallHeader ClassInstallHeader
StateChange DICS_STATE
Scope DICS_FLAG
HwProfile uint32
}
// DI_REMOVEDEVICE specifies the scope of the device removal
type DI_REMOVEDEVICE uint32
const (
DI_REMOVEDEVICE_GLOBAL DI_REMOVEDEVICE = 0x00000001 // Make this change in all hardware profiles. Remove information about the device from the registry.
DI_REMOVEDEVICE_CONFIGSPECIFIC DI_REMOVEDEVICE = 0x00000002 // Make this change to only the hardware profile specified by HwProfile. this flag only applies to root-enumerated devices. When Windows removes the device from the last hardware profile in which it was configured, Windows performs a global removal.
)
// RemoveDeviceParams is a structure corresponding to a DIF_REMOVE install function.
type RemoveDeviceParams struct {
ClassInstallHeader ClassInstallHeader
Scope DI_REMOVEDEVICE
HwProfile uint32
}
// DrvInfoData is driver information structure (member of a driver info list that may be associated with a particular device instance, or (globally) with a device information set)
type DrvInfoData struct {
size uint32
DriverType uint32
_ uintptr
description [LINE_LEN]uint16
mfgName [LINE_LEN]uint16
providerName [LINE_LEN]uint16
DriverDate windows.Filetime
DriverVersion uint64
}
func (data *DrvInfoData) Description() string {
return windows.UTF16ToString(data.description[:])
}
func (data *DrvInfoData) SetDescription(description string) error {
str, err := windows.UTF16FromString(description)
if err != nil {
return err
}
copy(data.description[:], str)
return nil
}
func (data *DrvInfoData) MfgName() string {
return windows.UTF16ToString(data.mfgName[:])
}
func (data *DrvInfoData) SetMfgName(mfgName string) error {
str, err := windows.UTF16FromString(mfgName)
if err != nil {
return err
}
copy(data.mfgName[:], str)
return nil
}
func (data *DrvInfoData) ProviderName() string {
return windows.UTF16ToString(data.providerName[:])
}
func (data *DrvInfoData) SetProviderName(providerName string) error {
str, err := windows.UTF16FromString(providerName)
if err != nil {
return err
}
copy(data.providerName[:], str)
return nil
}
// IsNewer method returns true if DrvInfoData date and version is newer than supplied parameters.
func (data *DrvInfoData) IsNewer(driverDate windows.Filetime, driverVersion uint64) bool {
if data.DriverDate.HighDateTime > driverDate.HighDateTime {
return true
}
if data.DriverDate.HighDateTime < driverDate.HighDateTime {
return false
}
if data.DriverDate.LowDateTime > driverDate.LowDateTime {
return true
}
if data.DriverDate.LowDateTime < driverDate.LowDateTime {
return false
}
if data.DriverVersion > driverVersion {
return true
}
if data.DriverVersion < driverVersion {
return false
}
return false
}
// DrvInfoDetailData is driver information details structure (provides detailed information about a particular driver information structure)
type DrvInfoDetailData struct {
size uint32 // Warning: unsafe.Sizeof(DrvInfoDetailData) > sizeof(SP_DRVINFO_DETAIL_DATA) when GOARCH == 386 => use sizeofDrvInfoDetailData const.
InfDate windows.Filetime
compatIDsOffset uint32
compatIDsLength uint32
_ uintptr
sectionName [LINE_LEN]uint16
infFileName [windows.MAX_PATH]uint16
drvDescription [LINE_LEN]uint16
hardwareID [ANYSIZE_ARRAY]uint16
}
func (data *DrvInfoDetailData) SectionName() string {
return windows.UTF16ToString(data.sectionName[:])
}
func (data *DrvInfoDetailData) InfFileName() string {
return windows.UTF16ToString(data.infFileName[:])
}
func (data *DrvInfoDetailData) DrvDescription() string {
return windows.UTF16ToString(data.drvDescription[:])
}
func (data *DrvInfoDetailData) HardwareID() string {
if data.compatIDsOffset > 1 {
bufW := data.getBuf()
return windows.UTF16ToString(bufW[:wcslen(bufW)])
}
return ""
}
func (data *DrvInfoDetailData) CompatIDs() []string {
a := make([]string, 0)
if data.compatIDsLength > 0 {
bufW := data.getBuf()
bufW = bufW[data.compatIDsOffset : data.compatIDsOffset+data.compatIDsLength]
for i := 0; i < len(bufW); {
j := i + wcslen(bufW[i:])
if i < j {
a = append(a, windows.UTF16ToString(bufW[i:j]))
}
i = j + 1
}
}
return a
}
func (data *DrvInfoDetailData) getBuf() []uint16 {
len := (data.size - uint32(unsafe.Offsetof(data.hardwareID))) / 2
sl := struct {
addr *uint16
len int
cap int
}{&data.hardwareID[0], int(len), int(len)}
return *(*[]uint16)(unsafe.Pointer(&sl))
}
// IsCompatible method tests if given hardware ID matches the driver or is listed on the compatible ID list.
func (data *DrvInfoDetailData) IsCompatible(hwid string) bool {
hwidLC := strings.ToLower(hwid)
if strings.ToLower(data.HardwareID()) == hwidLC {
return true
}
a := data.CompatIDs()
for i := range a {
if strings.ToLower(a[i]) == hwidLC {
return true
}
}
return false
}
// DICD flags control SetupDiCreateDeviceInfo
type DICD uint32
const (
DICD_GENERATE_ID DICD = 0x00000001
DICD_INHERIT_CLASSDRVS DICD = 0x00000002
)
//
// SPDIT flags to distinguish between class drivers and
// device drivers.
// (Passed in 'DriverType' parameter of driver information list APIs)
//
type SPDIT uint32
const (
SPDIT_NODRIVER SPDIT = 0x00000000
SPDIT_CLASSDRIVER SPDIT = 0x00000001
SPDIT_COMPATDRIVER SPDIT = 0x00000002
)
// DIGCF flags control what is included in the device information set built by SetupDiGetClassDevs
type DIGCF uint32
const (
DIGCF_DEFAULT DIGCF = 0x00000001 // only valid with DIGCF_DEVICEINTERFACE
DIGCF_PRESENT DIGCF = 0x00000002
DIGCF_ALLCLASSES DIGCF = 0x00000004
DIGCF_PROFILE DIGCF = 0x00000008
DIGCF_DEVICEINTERFACE DIGCF = 0x00000010
)
// DIREG specifies values for SetupDiCreateDevRegKey, SetupDiOpenDevRegKey, and SetupDiDeleteDevRegKey.
type DIREG uint32
const (
DIREG_DEV DIREG = 0x00000001 // Open/Create/Delete device key
DIREG_DRV DIREG = 0x00000002 // Open/Create/Delete driver key
DIREG_BOTH DIREG = 0x00000004 // Delete both driver and Device key
)
//
// SPDRP specifies device registry property codes
// (Codes marked as read-only (R) may only be used for
// SetupDiGetDeviceRegistryProperty)
//
// These values should cover the same set of registry properties
// as defined by the CM_DRP codes in cfgmgr32.h.
//
// Note that SPDRP codes are zero based while CM_DRP codes are one based!
//
type SPDRP uint32
const (
SPDRP_DEVICEDESC SPDRP = 0x00000000 // DeviceDesc (R/W)
SPDRP_HARDWAREID SPDRP = 0x00000001 // HardwareID (R/W)
SPDRP_COMPATIBLEIDS SPDRP = 0x00000002 // CompatibleIDs (R/W)
SPDRP_SERVICE SPDRP = 0x00000004 // Service (R/W)
SPDRP_CLASS SPDRP = 0x00000007 // Class (R--tied to ClassGUID)
SPDRP_CLASSGUID SPDRP = 0x00000008 // ClassGUID (R/W)
SPDRP_DRIVER SPDRP = 0x00000009 // Driver (R/W)
SPDRP_CONFIGFLAGS SPDRP = 0x0000000A // ConfigFlags (R/W)
SPDRP_MFG SPDRP = 0x0000000B // Mfg (R/W)
SPDRP_FRIENDLYNAME SPDRP = 0x0000000C // FriendlyName (R/W)
SPDRP_LOCATION_INFORMATION SPDRP = 0x0000000D // LocationInformation (R/W)
SPDRP_PHYSICAL_DEVICE_OBJECT_NAME SPDRP = 0x0000000E // PhysicalDeviceObjectName (R)
SPDRP_CAPABILITIES SPDRP = 0x0000000F // Capabilities (R)
SPDRP_UI_NUMBER SPDRP = 0x00000010 // UiNumber (R)
SPDRP_UPPERFILTERS SPDRP = 0x00000011 // UpperFilters (R/W)
SPDRP_LOWERFILTERS SPDRP = 0x00000012 // LowerFilters (R/W)
SPDRP_BUSTYPEGUID SPDRP = 0x00000013 // BusTypeGUID (R)
SPDRP_LEGACYBUSTYPE SPDRP = 0x00000014 // LegacyBusType (R)
SPDRP_BUSNUMBER SPDRP = 0x00000015 // BusNumber (R)
SPDRP_ENUMERATOR_NAME SPDRP = 0x00000016 // Enumerator Name (R)
SPDRP_SECURITY SPDRP = 0x00000017 // Security (R/W, binary form)
SPDRP_SECURITY_SDS SPDRP = 0x00000018 // Security (W, SDS form)
SPDRP_DEVTYPE SPDRP = 0x00000019 // Device Type (R/W)
SPDRP_EXCLUSIVE SPDRP = 0x0000001A // Device is exclusive-access (R/W)
SPDRP_CHARACTERISTICS SPDRP = 0x0000001B // Device Characteristics (R/W)
SPDRP_ADDRESS SPDRP = 0x0000001C // Device Address (R)
SPDRP_UI_NUMBER_DESC_FORMAT SPDRP = 0x0000001D // UiNumberDescFormat (R/W)
SPDRP_DEVICE_POWER_DATA SPDRP = 0x0000001E // Device Power Data (R)
SPDRP_REMOVAL_POLICY SPDRP = 0x0000001F // Removal Policy (R)
SPDRP_REMOVAL_POLICY_HW_DEFAULT SPDRP = 0x00000020 // Hardware Removal Policy (R)
SPDRP_REMOVAL_POLICY_OVERRIDE SPDRP = 0x00000021 // Removal Policy Override (RW)
SPDRP_INSTALL_STATE SPDRP = 0x00000022 // Device Install State (R)
SPDRP_LOCATION_PATHS SPDRP = 0x00000023 // Device Location Paths (R)
SPDRP_BASE_CONTAINERID SPDRP = 0x00000024 // Base ContainerID (R)
SPDRP_MAXIMUM_PROPERTY SPDRP = 0x00000025 // Upper bound on ordinals
)
const (
CR_SUCCESS = 0x0
CR_BUFFER_SMALL = 0x1a
)
const (
CM_GET_DEVICE_INTERFACE_LIST_PRESENT = 0 // only currently 'live' device interfaces
CM_GET_DEVICE_INTERFACE_LIST_ALL_DEVICES = 1 // all registered device interfaces, live or not
)

398
tun/wintun/setupapi/zsetupapi_windows.go
View File

@ -1,398 +0,0 @@
// Code generated by 'go generate'; DO NOT EDIT.
package setupapi
import (
"syscall"
"unsafe"
"golang.org/x/sys/windows"
)
var _ unsafe.Pointer
// Do the interface allocations only once for common
// Errno values.
const (
errnoERROR_IO_PENDING = 997
)
var (
errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
)
// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e syscall.Errno) error {
switch e {
case 0:
return nil
case errnoERROR_IO_PENDING:
return errERROR_IO_PENDING
}
// TODO: add more here, after collecting data on the common
// error values see on Windows. (perhaps when running
// all.bat?)
return e
}
var (
modsetupapi = windows.NewLazySystemDLL("setupapi.dll")
modCfgMgr32 = windows.NewLazySystemDLL("CfgMgr32.dll")
procSetupDiCreateDeviceInfoListExW = modsetupapi.NewProc("SetupDiCreateDeviceInfoListExW")
procSetupDiGetDeviceInfoListDetailW = modsetupapi.NewProc("SetupDiGetDeviceInfoListDetailW")
procSetupDiCreateDeviceInfoW = modsetupapi.NewProc("SetupDiCreateDeviceInfoW")
procSetupDiEnumDeviceInfo = modsetupapi.NewProc("SetupDiEnumDeviceInfo")
procSetupDiDestroyDeviceInfoList = modsetupapi.NewProc("SetupDiDestroyDeviceInfoList")
procSetupDiBuildDriverInfoList = modsetupapi.NewProc("SetupDiBuildDriverInfoList")
procSetupDiCancelDriverInfoSearch = modsetupapi.NewProc("SetupDiCancelDriverInfoSearch")
procSetupDiEnumDriverInfoW = modsetupapi.NewProc("SetupDiEnumDriverInfoW")
procSetupDiGetSelectedDriverW = modsetupapi.NewProc("SetupDiGetSelectedDriverW")
procSetupDiSetSelectedDriverW = modsetupapi.NewProc("SetupDiSetSelectedDriverW")
procSetupDiGetDriverInfoDetailW = modsetupapi.NewProc("SetupDiGetDriverInfoDetailW")
procSetupDiDestroyDriverInfoList = modsetupapi.NewProc("SetupDiDestroyDriverInfoList")
procSetupDiGetClassDevsExW = modsetupapi.NewProc("SetupDiGetClassDevsExW")
procSetupDiCallClassInstaller = modsetupapi.NewProc("SetupDiCallClassInstaller")
procSetupDiOpenDevRegKey = modsetupapi.NewProc("SetupDiOpenDevRegKey")
procSetupDiGetDeviceRegistryPropertyW = modsetupapi.NewProc("SetupDiGetDeviceRegistryPropertyW")
procSetupDiSetDeviceRegistryPropertyW = modsetupapi.NewProc("SetupDiSetDeviceRegistryPropertyW")
procSetupDiGetDeviceInstallParamsW = modsetupapi.NewProc("SetupDiGetDeviceInstallParamsW")
procSetupDiGetDeviceInstanceIdW = modsetupapi.NewProc("SetupDiGetDeviceInstanceIdW")
procSetupDiGetClassInstallParamsW = modsetupapi.NewProc("SetupDiGetClassInstallParamsW")
procSetupDiSetDeviceInstallParamsW = modsetupapi.NewProc("SetupDiSetDeviceInstallParamsW")
procSetupDiSetClassInstallParamsW = modsetupapi.NewProc("SetupDiSetClassInstallParamsW")
procSetupDiClassNameFromGuidExW = modsetupapi.NewProc("SetupDiClassNameFromGuidExW")
procSetupDiClassGuidsFromNameExW = modsetupapi.NewProc("SetupDiClassGuidsFromNameExW")
procSetupDiGetSelectedDevice = modsetupapi.NewProc("SetupDiGetSelectedDevice")
procSetupDiSetSelectedDevice = modsetupapi.NewProc("SetupDiSetSelectedDevice")
procCM_Get_Device_Interface_List_SizeW = modCfgMgr32.NewProc("CM_Get_Device_Interface_List_SizeW")
procCM_Get_Device_Interface_ListW = modCfgMgr32.NewProc("CM_Get_Device_Interface_ListW")
)
func setupDiCreateDeviceInfoListEx(classGUID *windows.GUID, hwndParent uintptr, machineName *uint16, reserved uintptr) (handle DevInfo, err error) {
r0, _, e1 := syscall.Syscall6(procSetupDiCreateDeviceInfoListExW.Addr(), 4, uintptr(unsafe.Pointer(classGUID)), uintptr(hwndParent), uintptr(unsafe.Pointer(machineName)), uintptr(reserved), 0, 0)
handle = DevInfo(r0)
if handle == DevInfo(windows.InvalidHandle) {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiGetDeviceInfoListDetail(deviceInfoSet DevInfo, deviceInfoSetDetailData *DevInfoListDetailData) (err error) {
r1, _, e1 := syscall.Syscall(procSetupDiGetDeviceInfoListDetailW.Addr(), 2, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoSetDetailData)), 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiCreateDeviceInfo(deviceInfoSet DevInfo, DeviceName *uint16, classGUID *windows.GUID, DeviceDescription *uint16, hwndParent uintptr, CreationFlags DICD, deviceInfoData *DevInfoData) (err error) {
r1, _, e1 := syscall.Syscall9(procSetupDiCreateDeviceInfoW.Addr(), 7, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(DeviceName)), uintptr(unsafe.Pointer(classGUID)), uintptr(unsafe.Pointer(DeviceDescription)), uintptr(hwndParent), uintptr(CreationFlags), uintptr(unsafe.Pointer(deviceInfoData)), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiEnumDeviceInfo(deviceInfoSet DevInfo, memberIndex uint32, deviceInfoData *DevInfoData) (err error) {
r1, _, e1 := syscall.Syscall(procSetupDiEnumDeviceInfo.Addr(), 3, uintptr(deviceInfoSet), uintptr(memberIndex), uintptr(unsafe.Pointer(deviceInfoData)))
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func SetupDiDestroyDeviceInfoList(deviceInfoSet DevInfo) (err error) {
r1, _, e1 := syscall.Syscall(procSetupDiDestroyDeviceInfoList.Addr(), 1, uintptr(deviceInfoSet), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func SetupDiBuildDriverInfoList(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverType SPDIT) (err error) {
r1, _, e1 := syscall.Syscall(procSetupDiBuildDriverInfoList.Addr(), 3, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(driverType))
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func SetupDiCancelDriverInfoSearch(deviceInfoSet DevInfo) (err error) {
r1, _, e1 := syscall.Syscall(procSetupDiCancelDriverInfoSearch.Addr(), 1, uintptr(deviceInfoSet), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiEnumDriverInfo(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverType SPDIT, memberIndex uint32, driverInfoData *DrvInfoData) (err error) {
r1, _, e1 := syscall.Syscall6(procSetupDiEnumDriverInfoW.Addr(), 5, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(driverType), uintptr(memberIndex), uintptr(unsafe.Pointer(driverInfoData)), 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiGetSelectedDriver(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverInfoData *DrvInfoData) (err error) {
r1, _, e1 := syscall.Syscall(procSetupDiGetSelectedDriverW.Addr(), 3, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(unsafe.Pointer(driverInfoData)))
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func SetupDiSetSelectedDriver(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverInfoData *DrvInfoData) (err error) {
r1, _, e1 := syscall.Syscall(procSetupDiSetSelectedDriverW.Addr(), 3, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(unsafe.Pointer(driverInfoData)))
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiGetDriverInfoDetail(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverInfoData *DrvInfoData, driverInfoDetailData *DrvInfoDetailData, driverInfoDetailDataSize uint32, requiredSize *uint32) (err error) {
r1, _, e1 := syscall.Syscall6(procSetupDiGetDriverInfoDetailW.Addr(), 6, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(unsafe.Pointer(driverInfoData)), uintptr(unsafe.Pointer(driverInfoDetailData)), uintptr(driverInfoDetailDataSize), uintptr(unsafe.Pointer(requiredSize)))
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func SetupDiDestroyDriverInfoList(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, driverType SPDIT) (err error) {
r1, _, e1 := syscall.Syscall(procSetupDiDestroyDriverInfoList.Addr(), 3, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(driverType))
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiGetClassDevsEx(classGUID *windows.GUID, Enumerator *uint16, hwndParent uintptr, Flags DIGCF, deviceInfoSet DevInfo, machineName *uint16, reserved uintptr) (handle DevInfo, err error) {
r0, _, e1 := syscall.Syscall9(procSetupDiGetClassDevsExW.Addr(), 7, uintptr(unsafe.Pointer(classGUID)), uintptr(unsafe.Pointer(Enumerator)), uintptr(hwndParent), uintptr(Flags), uintptr(deviceInfoSet), uintptr(unsafe.Pointer(machineName)), uintptr(reserved), 0, 0)
handle = DevInfo(r0)
if handle == DevInfo(windows.InvalidHandle) {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func SetupDiCallClassInstaller(installFunction DI_FUNCTION, deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (err error) {
r1, _, e1 := syscall.Syscall(procSetupDiCallClassInstaller.Addr(), 3, uintptr(installFunction), uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)))
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiOpenDevRegKey(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, Scope DICS_FLAG, HwProfile uint32, KeyType DIREG, samDesired uint32) (key windows.Handle, err error) {
r0, _, e1 := syscall.Syscall6(procSetupDiOpenDevRegKey.Addr(), 6, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(Scope), uintptr(HwProfile), uintptr(KeyType), uintptr(samDesired))
key = windows.Handle(r0)
if key == windows.InvalidHandle {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiGetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, property SPDRP, propertyRegDataType *uint32, propertyBuffer *byte, propertyBufferSize uint32, requiredSize *uint32) (err error) {
r1, _, e1 := syscall.Syscall9(procSetupDiGetDeviceRegistryPropertyW.Addr(), 7, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(property), uintptr(unsafe.Pointer(propertyRegDataType)), uintptr(unsafe.Pointer(propertyBuffer)), uintptr(propertyBufferSize), uintptr(unsafe.Pointer(requiredSize)), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiSetDeviceRegistryProperty(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, property SPDRP, propertyBuffer *byte, propertyBufferSize uint32) (err error) {
r1, _, e1 := syscall.Syscall6(procSetupDiSetDeviceRegistryPropertyW.Addr(), 5, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(property), uintptr(unsafe.Pointer(propertyBuffer)), uintptr(propertyBufferSize), 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiGetDeviceInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, deviceInstallParams *DevInstallParams) (err error) {
r1, _, e1 := syscall.Syscall(procSetupDiGetDeviceInstallParamsW.Addr(), 3, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(unsafe.Pointer(deviceInstallParams)))
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiGetDeviceInstanceId(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, instanceId *uint16, instanceIdSize uint32, instanceIdRequiredSize *uint32) (err error) {
r1, _, e1 := syscall.Syscall6(procSetupDiGetDeviceInstanceIdW.Addr(), 5, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(unsafe.Pointer(instanceId)), uintptr(instanceIdSize), uintptr(unsafe.Pointer(instanceIdRequiredSize)), 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func SetupDiGetClassInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, classInstallParams *ClassInstallHeader, classInstallParamsSize uint32, requiredSize *uint32) (err error) {
r1, _, e1 := syscall.Syscall6(procSetupDiGetClassInstallParamsW.Addr(), 5, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(unsafe.Pointer(classInstallParams)), uintptr(classInstallParamsSize), uintptr(unsafe.Pointer(requiredSize)), 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func SetupDiSetDeviceInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, deviceInstallParams *DevInstallParams) (err error) {
r1, _, e1 := syscall.Syscall(procSetupDiSetDeviceInstallParamsW.Addr(), 3, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(unsafe.Pointer(deviceInstallParams)))
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func SetupDiSetClassInstallParams(deviceInfoSet DevInfo, deviceInfoData *DevInfoData, classInstallParams *ClassInstallHeader, classInstallParamsSize uint32) (err error) {
r1, _, e1 := syscall.Syscall6(procSetupDiSetClassInstallParamsW.Addr(), 4, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), uintptr(unsafe.Pointer(classInstallParams)), uintptr(classInstallParamsSize), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiClassNameFromGuidEx(classGUID *windows.GUID, className *uint16, classNameSize uint32, requiredSize *uint32, machineName *uint16, reserved uintptr) (err error) {
r1, _, e1 := syscall.Syscall6(procSetupDiClassNameFromGuidExW.Addr(), 6, uintptr(unsafe.Pointer(classGUID)), uintptr(unsafe.Pointer(className)), uintptr(classNameSize), uintptr(unsafe.Pointer(requiredSize)), uintptr(unsafe.Pointer(machineName)), uintptr(reserved))
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiClassGuidsFromNameEx(className *uint16, classGuidList *windows.GUID, classGuidListSize uint32, requiredSize *uint32, machineName *uint16, reserved uintptr) (err error) {
r1, _, e1 := syscall.Syscall6(procSetupDiClassGuidsFromNameExW.Addr(), 6, uintptr(unsafe.Pointer(className)), uintptr(unsafe.Pointer(classGuidList)), uintptr(classGuidListSize), uintptr(unsafe.Pointer(requiredSize)), uintptr(unsafe.Pointer(machineName)), uintptr(reserved))
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func setupDiGetSelectedDevice(deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (err error) {
r1, _, e1 := syscall.Syscall(procSetupDiGetSelectedDevice.Addr(), 2, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func SetupDiSetSelectedDevice(deviceInfoSet DevInfo, deviceInfoData *DevInfoData) (err error) {
r1, _, e1 := syscall.Syscall(procSetupDiSetSelectedDevice.Addr(), 2, uintptr(deviceInfoSet), uintptr(unsafe.Pointer(deviceInfoData)), 0)
if r1 == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func cm_Get_Device_Interface_List_Size(len *uint32, interfaceClass *windows.GUID, deviceID *uint16, flags uint32) (ret uint32) {
r0, _, _ := syscall.Syscall6(procCM_Get_Device_Interface_List_SizeW.Addr(), 4, uintptr(unsafe.Pointer(len)), uintptr(unsafe.Pointer(interfaceClass)), uintptr(unsafe.Pointer(deviceID)), uintptr(flags), 0, 0)
ret = uint32(r0)
return
}
func cm_Get_Device_Interface_List(interfaceClass *windows.GUID, deviceID *uint16, buffer *uint16, bufferLen uint32, flags uint32) (ret uint32) {
r0, _, _ := syscall.Syscall6(procCM_Get_Device_Interface_ListW.Addr(), 5, uintptr(unsafe.Pointer(interfaceClass)), uintptr(unsafe.Pointer(deviceID)), uintptr(unsafe.Pointer(buffer)), uintptr(bufferLen), uintptr(flags), 0)
ret = uint32(r0)
return
}

20
tun/wintun/setupapi/zsetupapi_windows_test.go
View File

@ -1,20 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2020 WireGuard LLC. All Rights Reserved.
*/
package setupapi
import (
"syscall"
"testing"
"golang.org/x/sys/windows"
)
func TestSetupDiDestroyDeviceInfoList(t *testing.T) {
err := SetupDiDestroyDeviceInfoList(DevInfo(windows.InvalidHandle))
if errWin, ok := err.(syscall.Errno); !ok || errWin != windows.ERROR_INVALID_HANDLE {
t.Errorf("SetupDiDestroyDeviceInfoList(nil, ...) should fail with ERROR_INVALID_HANDLE")
}
}

919
tun/wintun/wintun_windows.go
View File

@ -7,814 +7,221 @@ package wintun
import (
"errors"
"fmt"
"strings"
"time"
"log"
"runtime"
"syscall"
"unsafe"
"golang.org/x/sys/windows"
"golang.org/x/sys/windows/registry"
"golang.zx2c4.com/wireguard/tun/wintun/iphlpapi"
"golang.zx2c4.com/wireguard/tun/wintun/nci"
registryEx "golang.zx2c4.com/wireguard/tun/wintun/registry"
"golang.zx2c4.com/wireguard/tun/wintun/setupapi"
)
type Pool string
type Interface struct {
cfgInstanceID windows.GUID
devInstanceID string
luidIndex uint32
ifType uint32
pool Pool
}
var deviceClassNetGUID = windows.GUID{Data1: 0x4d36e972, Data2: 0xe325, Data3: 0x11ce, Data4: [8]byte{0xbf, 0xc1, 0x08, 0x00, 0x2b, 0xe1, 0x03, 0x18}}
var deviceInterfaceNetGUID = windows.GUID{Data1: 0xcac88484, Data2: 0x7515, Data3: 0x4c03, Data4: [8]byte{0x82, 0xe6, 0x71, 0xa8, 0x7a, 0xba, 0xc3, 0x61}}
type loggerLevel int
const (
hardwareID = "Wintun"
waitForRegistryTimeout = time.Second * 10
logInfo loggerLevel = iota
logWarn
logErr
)
// makeWintun creates a Wintun interface handle and populates it from the device's registry key.
func makeWintun(devInfo setupapi.DevInfo, devInfoData *setupapi.DevInfoData, pool Pool) (*Interface, error) {
// Open HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\<class>\<id> registry key.
key, err := devInfo.OpenDevRegKey(devInfoData, setupapi.DICS_FLAG_GLOBAL, 0, setupapi.DIREG_DRV, registry.QUERY_VALUE)
if err != nil {
return nil, fmt.Errorf("Device-specific registry key open failed: %v", err)
}
defer key.Close()
const (
PoolNameMax = 256
AdapterNameMax = 128
)
// Read the NetCfgInstanceId value.
valueStr, err := registryEx.GetStringValue(key, "NetCfgInstanceId")
if err != nil {
return nil, fmt.Errorf("RegQueryStringValue(\"NetCfgInstanceId\") failed: %v", err)
}
// Convert to GUID.
ifid, err := windows.GUIDFromString(valueStr)
if err != nil {
return nil, fmt.Errorf("NetCfgInstanceId registry value is not a GUID (expected: \"{...}\", provided: %q)", valueStr)
}
// Read the NetLuidIndex value.
luidIdx, _, err := key.GetIntegerValue("NetLuidIndex")
if err != nil {
return nil, fmt.Errorf("RegQueryValue(\"NetLuidIndex\") failed: %v", err)
}
// Read the NetLuidIndex value.
ifType, _, err := key.GetIntegerValue("*IfType")
if err != nil {
return nil, fmt.Errorf("RegQueryValue(\"*IfType\") failed: %v", err)
}
instanceID, err := devInfo.DeviceInstanceID(devInfoData)
if err != nil {
return nil, fmt.Errorf("DeviceInstanceID failed: %v", err)
}
return &Interface{
cfgInstanceID: ifid,
devInstanceID: instanceID,
luidIndex: uint32(luidIdx),
ifType: uint32(ifType),
pool: pool,
}, nil
type Pool [PoolNameMax]uint16
type Adapter struct {
handle uintptr
}
func removeNumberedSuffix(ifname string) string {
removed := strings.TrimRight(ifname, "0123456789")
if removed != ifname && len(removed) > 1 && removed[len(removed)-1] == ' ' {
return removed[:len(removed)-1]
}
return ifname
var (
modwintun = windows.NewLazyDLL("wintun.dll")
procWintunCreateAdapter = modwintun.NewProc("WintunCreateAdapter")
procWintunDeleteAdapter = modwintun.NewProc("WintunDeleteAdapter")
procWintunDeletePoolDriver = modwintun.NewProc("WintunDeletePoolDriver")
procWintunEnumAdapters = modwintun.NewProc("WintunEnumAdapters")
procWintunFreeAdapter = modwintun.NewProc("WintunFreeAdapter")
procWintunOpenAdapter = modwintun.NewProc("WintunOpenAdapter")
procWintunGetAdapterLUID = modwintun.NewProc("WintunGetAdapterLUID")
procWintunGetAdapterName = modwintun.NewProc("WintunGetAdapterName")
procWintunGetRunningDriverVersion = modwintun.NewProc("WintunGetRunningDriverVersion")
procWintunOpenAdapterDeviceObject = modwintun.NewProc("WintunOpenAdapterDeviceObject")
procWintunSetAdapterName = modwintun.NewProc("WintunSetAdapterName")
procWintunSetLogger = modwintun.NewProc("WintunSetLogger")
)
func init() {
syscall.Syscall(procWintunSetLogger.Addr(), 1, windows.NewCallback(func(level loggerLevel, msg *uint16) int {
log.Println("[Wintun]", windows.UTF16PtrToString(msg))
return 0
}), 0, 0)
}
// GetInterface finds a Wintun interface by its name. This function returns
// the interface if found, or windows.ERROR_OBJECT_NOT_FOUND otherwise. If
// the interface is found but not a Wintun-class or a member of the pool,
// this function returns windows.ERROR_ALREADY_EXISTS.
func (pool Pool) GetInterface(ifname string) (*Interface, error) {
mutex, err := pool.takeNameMutex()
func MakePool(poolName string) (pool *Pool, err error) {
poolName16, err := windows.UTF16FromString(poolName)
if err != nil {
return
}
if len(poolName16) > PoolNameMax {
err = errors.New("Pool name too long")
return
}
pool = &Pool{}
copy(pool[:], poolName16)
return
}
func (pool *Pool) String() string {
return windows.UTF16ToString(pool[:])
}
func freeAdapter(wintun *Adapter) {
syscall.Syscall(procWintunFreeAdapter.Addr(), 1, uintptr(wintun.handle), 0, 0)
}
// OpenAdapter finds a Wintun adapter by its name. This function returns the adapter if found, or
// windows.ERROR_FILE_NOT_FOUND otherwise. If the adapter is found but not a Wintun-class or a
// member of the pool, this function returns windows.ERROR_ALREADY_EXISTS. The adapter must be
// released after use.
func (pool *Pool) OpenAdapter(ifname string) (wintun *Adapter, err error) {
ifname16, err := windows.UTF16PtrFromString(ifname)
if err != nil {
return nil, err
}
defer func() {
windows.ReleaseMutex(mutex)
windows.CloseHandle(mutex)
}()
// Create a list of network devices.
devInfo, err := setupapi.SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, setupapi.DIGCF_PRESENT, setupapi.DevInfo(0), "")
if err != nil {
return nil, fmt.Errorf("SetupDiGetClassDevsEx(%v) failed: %v", deviceClassNetGUID, err)
}
defer devInfo.Close()
// Windows requires each interface to have a different name. When
// enforcing this, Windows treats interface names case-insensitive. If an
// interface "FooBar" exists and this function reports there is no
// interface "foobar", an attempt to create a new interface and name it
// "foobar" would cause conflict with "FooBar".
ifname = strings.ToLower(ifname)
for index := 0; ; index++ {
devInfoData, err := devInfo.EnumDeviceInfo(index)
if err != nil {
if err == windows.ERROR_NO_MORE_ITEMS {
break
}
continue
}
// Check the Hardware ID to make sure it's a real Wintun device first. This avoids doing slow operations on non-Wintun devices.
property, err := devInfo.DeviceRegistryProperty(devInfoData, setupapi.SPDRP_HARDWAREID)
if err != nil {
continue
}
if !isOurHardwareID(property) {
continue
}
wintun, err := makeWintun(devInfo, devInfoData, pool)
if err != nil {
continue
}
// TODO: is there a better way than comparing ifnames?
ifname2, err := wintun.Name()
if err != nil {
continue
}
ifname2 = strings.ToLower(ifname2)
ifname3 := removeNumberedSuffix(ifname2)
if ifname == ifname2 || ifname == ifname3 {
err = devInfo.BuildDriverInfoList(devInfoData, setupapi.SPDIT_COMPATDRIVER)
if err != nil {
return nil, fmt.Errorf("SetupDiBuildDriverInfoList failed: %v", err)
}
defer devInfo.DestroyDriverInfoList(devInfoData, setupapi.SPDIT_COMPATDRIVER)
for index := 0; ; index++ {
driverData, err := devInfo.EnumDriverInfo(devInfoData, setupapi.SPDIT_COMPATDRIVER, index)
if err != nil {
if err == windows.ERROR_NO_MORE_ITEMS {
break
}
continue
}
// Get driver info details.
driverDetailData, err := devInfo.DriverInfoDetail(devInfoData, driverData)
if err != nil {
continue
}
if driverDetailData.IsCompatible(hardwareID) {
isMember, err := pool.isMember(devInfo, devInfoData)
if err != nil {
return nil, err
}
if !isMember {
return nil, windows.ERROR_ALREADY_EXISTS
}
return wintun, nil
}
}
// This interface is not using Wintun driver.
return nil, windows.ERROR_ALREADY_EXISTS
}
}
return nil, windows.ERROR_OBJECT_NOT_FOUND
}
// CreateInterface creates a Wintun interface. ifname is the requested name of
// the interface, while requestedGUID is the GUID of the created network
// interface, which then influences NLA generation deterministically. If it is
// set to nil, the GUID is chosen by the system at random, and hence a new NLA
// entry is created for each new interface. It is called "requested" GUID
// because the API it uses is completely undocumented, and so there could be minor
// interesting complications with its usage. This function returns the network
// interface ID and a flag if reboot is required.
func (pool Pool) CreateInterface(ifname string, requestedGUID *windows.GUID) (wintun *Interface, rebootRequired bool, err error) {
mutex, err := pool.takeNameMutex()
if err != nil {
r0, _, e1 := syscall.Syscall(procWintunOpenAdapter.Addr(), 2, uintptr(unsafe.Pointer(pool)), uintptr(unsafe.Pointer(ifname16)), 0)
if r0 == 0 {
err = e1
return
}
defer func() {
windows.ReleaseMutex(mutex)
windows.CloseHandle(mutex)
}()
// Create an empty device info set for network adapter device class.
devInfo, err := setupapi.SetupDiCreateDeviceInfoListEx(&deviceClassNetGUID, 0, "")
if err != nil {
err = fmt.Errorf("SetupDiCreateDeviceInfoListEx(%v) failed: %v", deviceClassNetGUID, err)
return
}
defer devInfo.Close()
// Get the device class name from GUID.
className, err := setupapi.SetupDiClassNameFromGuidEx(&deviceClassNetGUID, "")
if err != nil {
err = fmt.Errorf("SetupDiClassNameFromGuidEx(%v) failed: %v", deviceClassNetGUID, err)
return
}
// Create a new device info element and add it to the device info set.
deviceTypeName := pool.deviceTypeName()
devInfoData, err := devInfo.CreateDeviceInfo(className, &deviceClassNetGUID, deviceTypeName, 0, setupapi.DICD_GENERATE_ID)
if err != nil {
err = fmt.Errorf("SetupDiCreateDeviceInfo failed: %v", err)
return
}
err = setQuietInstall(devInfo, devInfoData)
if err != nil {
err = fmt.Errorf("Setting quiet installation failed: %v", err)
return
}
// Set a device information element as the selected member of a device information set.
err = devInfo.SetSelectedDevice(devInfoData)
if err != nil {
err = fmt.Errorf("SetupDiSetSelectedDevice failed: %v", err)
return
}
// Set Plug&Play device hardware ID property.
err = devInfo.SetDeviceRegistryPropertyString(devInfoData, setupapi.SPDRP_HARDWAREID, hardwareID)
if err != nil {
err = fmt.Errorf("SetupDiSetDeviceRegistryProperty(SPDRP_HARDWAREID) failed: %v", err)
return
}
err = devInfo.BuildDriverInfoList(devInfoData, setupapi.SPDIT_COMPATDRIVER) // TODO: This takes ~510ms
if err != nil {
err = fmt.Errorf("SetupDiBuildDriverInfoList failed: %v", err)
return
}
defer devInfo.DestroyDriverInfoList(devInfoData, setupapi.SPDIT_COMPATDRIVER)
driverDate := windows.Filetime{}
driverVersion := uint64(0)
for index := 0; ; index++ { // TODO: This loop takes ~600ms
driverData, err := devInfo.EnumDriverInfo(devInfoData, setupapi.SPDIT_COMPATDRIVER, index)
if err != nil {
if err == windows.ERROR_NO_MORE_ITEMS {
break
}
continue
}
// Check the driver version first, since the check is trivial and will save us iterating over hardware IDs for any driver versioned prior our best match.
if driverData.IsNewer(driverDate, driverVersion) {
driverDetailData, err := devInfo.DriverInfoDetail(devInfoData, driverData)
if err != nil {
continue
}
if driverDetailData.IsCompatible(hardwareID) {
err := devInfo.SetSelectedDriver(devInfoData, driverData)
if err != nil {
continue
}
driverDate = driverData.DriverDate
driverVersion = driverData.DriverVersion
}
}
}
if driverVersion == 0 {
err = fmt.Errorf("No driver for device %q installed", hardwareID)
return
}
defer func() {
if err != nil {
// The interface failed to install, or the interface ID was unobtainable. Clean-up.
removeDeviceParams := setupapi.RemoveDeviceParams{
ClassInstallHeader: *setupapi.MakeClassInstallHeader(setupapi.DIF_REMOVE),
Scope: setupapi.DI_REMOVEDEVICE_GLOBAL,
}
// Set class installer parameters for DIF_REMOVE.
if devInfo.SetClassInstallParams(devInfoData, &removeDeviceParams.ClassInstallHeader, uint32(unsafe.Sizeof(removeDeviceParams))) == nil {
// Call appropriate class installer.
if devInfo.CallClassInstaller(setupapi.DIF_REMOVE, devInfoData) == nil {
rebootRequired = rebootRequired || checkReboot(devInfo, devInfoData)
}
}
wintun = nil
}
}()
// Call appropriate class installer.
err = devInfo.CallClassInstaller(setupapi.DIF_REGISTERDEVICE, devInfoData)
if err != nil {
err = fmt.Errorf("SetupDiCallClassInstaller(DIF_REGISTERDEVICE) failed: %v", err)
return
}
// Register device co-installers if any. (Ignore errors)
devInfo.CallClassInstaller(setupapi.DIF_REGISTER_COINSTALLERS, devInfoData)
var netDevRegKey registry.Key
const pollTimeout = time.Millisecond * 50
for i := 0; i < int(waitForRegistryTimeout/pollTimeout); i++ {
if i != 0 {
time.Sleep(pollTimeout)
}
netDevRegKey, err = devInfo.OpenDevRegKey(devInfoData, setupapi.DICS_FLAG_GLOBAL, 0, setupapi.DIREG_DRV, registry.SET_VALUE|registry.QUERY_VALUE|registry.NOTIFY)
if err == nil {
break
}
}
if err != nil {
err = fmt.Errorf("SetupDiOpenDevRegKey failed: %v", err)
return
}
defer netDevRegKey.Close()
if requestedGUID != nil {
err = netDevRegKey.SetStringValue("NetSetupAnticipatedInstanceId", requestedGUID.String())
if err != nil {
err = fmt.Errorf("SetStringValue(NetSetupAnticipatedInstanceId) failed: %v", err)
return
}
}
// Install interfaces if any. (Ignore errors)
devInfo.CallClassInstaller(setupapi.DIF_INSTALLINTERFACES, devInfoData)
// Install the device.
err = devInfo.CallClassInstaller(setupapi.DIF_INSTALLDEVICE, devInfoData)
if err != nil {
err = fmt.Errorf("SetupDiCallClassInstaller(DIF_INSTALLDEVICE) failed: %v", err)
return
}
rebootRequired = checkReboot(devInfo, devInfoData)
err = devInfo.SetDeviceRegistryPropertyString(devInfoData, setupapi.SPDRP_DEVICEDESC, deviceTypeName)
if err != nil {
err = fmt.Errorf("SetDeviceRegistryPropertyString(SPDRP_DEVICEDESC) failed: %v", err)
return
}
// DIF_INSTALLDEVICE returns almost immediately, while the device installation
// continues in the background. It might take a while, before all registry
// keys and values are populated.
_, err = registryEx.GetStringValueWait(netDevRegKey, "NetCfgInstanceId", waitForRegistryTimeout)
if err != nil {
err = fmt.Errorf("GetStringValueWait(NetCfgInstanceId) failed: %v", err)
return
}
_, err = registryEx.GetIntegerValueWait(netDevRegKey, "NetLuidIndex", waitForRegistryTimeout)
if err != nil {
err = fmt.Errorf("GetIntegerValueWait(NetLuidIndex) failed: %v", err)
return
}
_, err = registryEx.GetIntegerValueWait(netDevRegKey, "*IfType", waitForRegistryTimeout)
if err != nil {
err = fmt.Errorf("GetIntegerValueWait(*IfType) failed: %v", err)
return
}
// Get network interface.
wintun, err = makeWintun(devInfo, devInfoData, pool)
if err != nil {
err = fmt.Errorf("makeWintun failed: %v", err)
return
}
// Wait for TCP/IP adapter registry key to emerge and populate.
tcpipAdapterRegKey, err := registryEx.OpenKeyWait(
registry.LOCAL_MACHINE,
wintun.tcpipAdapterRegKeyName(), registry.QUERY_VALUE|registry.NOTIFY,
waitForRegistryTimeout)
if err != nil {
err = fmt.Errorf("OpenKeyWait(HKLM\\%s) failed: %v", wintun.tcpipAdapterRegKeyName(), err)
return
}
defer tcpipAdapterRegKey.Close()
_, err = registryEx.GetStringValueWait(tcpipAdapterRegKey, "IpConfig", waitForRegistryTimeout)
if err != nil {
err = fmt.Errorf("GetStringValueWait(IpConfig) failed: %v", err)
return
}
tcpipInterfaceRegKeyName, err := wintun.tcpipInterfaceRegKeyName()
if err != nil {
err = fmt.Errorf("tcpipInterfaceRegKeyName failed: %v", err)
return
}
// Wait for TCP/IP interface registry key to emerge.
tcpipInterfaceRegKey, err := registryEx.OpenKeyWait(
registry.LOCAL_MACHINE,
tcpipInterfaceRegKeyName, registry.QUERY_VALUE|registry.SET_VALUE,
waitForRegistryTimeout)
if err != nil {
err = fmt.Errorf("OpenKeyWait(HKLM\\%s) failed: %v", tcpipInterfaceRegKeyName, err)
return
}
defer tcpipInterfaceRegKey.Close()
// Disable dead gateway detection on our interface.
tcpipInterfaceRegKey.SetDWordValue("EnableDeadGWDetect", 0)
err = wintun.SetName(ifname)
if err != nil {
err = fmt.Errorf("Unable to set name of Wintun interface: %v", err)
return
}
wintun = &Adapter{r0}
runtime.SetFinalizer(wintun, freeAdapter)
return
}
// DeleteInterface deletes a Wintun interface. This function succeeds
// if the interface was not found. It returns a bool indicating whether
// a reboot is required.
func (wintun *Interface) DeleteInterface() (rebootRequired bool, err error) {
devInfo, devInfoData, err := wintun.devInfoData()
if err == windows.ERROR_OBJECT_NOT_FOUND {
return false, nil
}
// CreateAdapter creates a Wintun adapter. ifname is the requested name of the adapter, while
// requestedGUID is the GUID of the created network adapter, which then influences NLA generation
// deterministically. If it is set to nil, the GUID is chosen by the system at random, and hence a
// new NLA entry is created for each new adapter. It is called "requested" GUID because the API it
// uses is completely undocumented, and so there could be minor interesting complications with its
// usage. This function returns the network adapter ID and a flag if reboot is required.
func (pool *Pool) CreateAdapter(ifname string, requestedGUID *windows.GUID) (wintun *Adapter, rebootRequired bool, err error) {
var ifname16 *uint16
ifname16, err = windows.UTF16PtrFromString(ifname)
if err != nil {
return false, err
return
}
defer devInfo.Close()
// Remove the device.
removeDeviceParams := setupapi.RemoveDeviceParams{
ClassInstallHeader: *setupapi.MakeClassInstallHeader(setupapi.DIF_REMOVE),
Scope: setupapi.DI_REMOVEDEVICE_GLOBAL,
var _p0 uint32
r0, _, e1 := syscall.Syscall6(procWintunCreateAdapter.Addr(), 4, uintptr(unsafe.Pointer(pool)), uintptr(unsafe.Pointer(ifname16)), uintptr(unsafe.Pointer(requestedGUID)), uintptr(unsafe.Pointer(&_p0)), 0, 0)
rebootRequired = _p0 != 0
if r0 == 0 {
err = e1
return
}
// Set class installer parameters for DIF_REMOVE.
err = devInfo.SetClassInstallParams(devInfoData, &removeDeviceParams.ClassInstallHeader, uint32(unsafe.Sizeof(removeDeviceParams)))
if err != nil {
return false, fmt.Errorf("SetupDiSetClassInstallParams failed: %v", err)
}
// Call appropriate class installer.
err = devInfo.CallClassInstaller(setupapi.DIF_REMOVE, devInfoData)
if err != nil {
return false, fmt.Errorf("SetupDiCallClassInstaller failed: %v", err)
}
return checkReboot(devInfo, devInfoData), nil
wintun = &Adapter{r0}
runtime.SetFinalizer(wintun, freeAdapter)
return
}
// DeleteMatchingInterfaces deletes all Wintun interfaces, which match
// Delete deletes a Wintun adapter. This function succeeds if the adapter was not found. It returns
// a bool indicating whether a reboot is required.
func (wintun *Adapter) Delete(forceCloseSessions bool) (rebootRequired bool, err error) {
var _p0 uint32
if forceCloseSessions {
_p0 = 1
}
var _p1 uint32
r1, _, e1 := syscall.Syscall(procWintunDeleteAdapter.Addr(), 3, uintptr(wintun.handle), uintptr(_p0), uintptr(unsafe.Pointer(&_p1)))
rebootRequired = _p1 != 0
if r1 == 0 {
err = e1
}
return
}
// DeleteMatchingAdapters deletes all Wintun adapters, which match
// given criteria, and returns which ones it deleted, whether a reboot
// is required after, and which errors occurred during the process.
func (pool Pool) DeleteMatchingInterfaces(matches func(wintun *Interface) bool) (deviceInstancesDeleted []uint32, rebootRequired bool, errors []error) {
mutex, err := pool.takeNameMutex()
if err != nil {
errors = append(errors, err)
return
func (pool *Pool) DeleteMatchingAdapters(matches func(adapter *Adapter) bool, forceCloseSessions bool) (rebootRequired bool, errors []error) {
cb := func(handle uintptr, _ uintptr) int {
adapter := &Adapter{handle}
if !matches(adapter) {
return 1
}
rebootRequired2, err := adapter.Delete(forceCloseSessions)
if err != nil {
errors = append(errors, err)
return 1
}
rebootRequired = rebootRequired || rebootRequired2
return 1
}
defer func() {
windows.ReleaseMutex(mutex)
windows.CloseHandle(mutex)
}()
devInfo, err := setupapi.SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, setupapi.DIGCF_PRESENT, setupapi.DevInfo(0), "")
if err != nil {
return nil, false, []error{fmt.Errorf("SetupDiGetClassDevsEx(%v) failed: %v", deviceClassNetGUID, err.Error())}
}
defer devInfo.Close()
for i := 0; ; i++ {
devInfoData, err := devInfo.EnumDeviceInfo(i)
if err != nil {
if err == windows.ERROR_NO_MORE_ITEMS {
break
}
continue
}
// Check the Hardware ID to make sure it's a real Wintun device first. This avoids doing slow operations on non-Wintun devices.
property, err := devInfo.DeviceRegistryProperty(devInfoData, setupapi.SPDRP_HARDWAREID)
if err != nil {
continue
}
if !isOurHardwareID(property) {
continue
}
err = devInfo.BuildDriverInfoList(devInfoData, setupapi.SPDIT_COMPATDRIVER)
if err != nil {
continue
}
defer devInfo.DestroyDriverInfoList(devInfoData, setupapi.SPDIT_COMPATDRIVER)
isWintun := false
for j := 0; ; j++ {
driverData, err := devInfo.EnumDriverInfo(devInfoData, setupapi.SPDIT_COMPATDRIVER, j)
if err != nil {
if err == windows.ERROR_NO_MORE_ITEMS {
break
}
continue
}
driverDetailData, err := devInfo.DriverInfoDetail(devInfoData, driverData)
if err != nil {
continue
}
if driverDetailData.IsCompatible(hardwareID) {
isWintun = true
break
}
}
if !isWintun {
continue
}
isMember, err := pool.isMember(devInfo, devInfoData)
if err != nil {
errors = append(errors, err)
continue
}
if !isMember {
continue
}
wintun, err := makeWintun(devInfo, devInfoData, pool)
if err != nil {
errors = append(errors, fmt.Errorf("Unable to make Wintun interface object: %v", err))
continue
}
if !matches(wintun) {
continue
}
err = setQuietInstall(devInfo, devInfoData)
if err != nil {
errors = append(errors, err)
continue
}
inst := devInfoData.DevInst
removeDeviceParams := setupapi.RemoveDeviceParams{
ClassInstallHeader: *setupapi.MakeClassInstallHeader(setupapi.DIF_REMOVE),
Scope: setupapi.DI_REMOVEDEVICE_GLOBAL,
}
err = devInfo.SetClassInstallParams(devInfoData, &removeDeviceParams.ClassInstallHeader, uint32(unsafe.Sizeof(removeDeviceParams)))
if err != nil {
errors = append(errors, err)
continue
}
err = devInfo.CallClassInstaller(setupapi.DIF_REMOVE, devInfoData)
if err != nil {
errors = append(errors, err)
continue
}
rebootRequired = rebootRequired || checkReboot(devInfo, devInfoData)
deviceInstancesDeleted = append(deviceInstancesDeleted, inst)
r1, _, e1 := syscall.Syscall(procWintunEnumAdapters.Addr(), 3, uintptr(unsafe.Pointer(pool)), uintptr(windows.NewCallback(cb)), 0)
if r1 == 0 {
errors = append(errors, e1)
}
return
}
// isMember checks if SPDRP_DEVICEDESC or SPDRP_FRIENDLYNAME match device type name.
func (pool Pool) isMember(devInfo setupapi.DevInfo, devInfoData *setupapi.DevInfoData) (bool, error) {
deviceDescVal, err := devInfo.DeviceRegistryProperty(devInfoData, setupapi.SPDRP_DEVICEDESC)
if err != nil {
return false, fmt.Errorf("DeviceRegistryPropertyString(SPDRP_DEVICEDESC) failed: %v", err)
// Name returns the name of the Wintun adapter.
func (wintun *Adapter) Name() (ifname string, err error) {
var ifname16 [AdapterNameMax]uint16
r1, _, e1 := syscall.Syscall(procWintunGetAdapterName.Addr(), 2, uintptr(wintun.handle), uintptr(unsafe.Pointer(&ifname16[0])), 0)
if r1 == 0 {
err = e1
return
}
deviceDesc, _ := deviceDescVal.(string)
friendlyNameVal, err := devInfo.DeviceRegistryProperty(devInfoData, setupapi.SPDRP_FRIENDLYNAME)
if err != nil {
return false, fmt.Errorf("DeviceRegistryPropertyString(SPDRP_FRIENDLYNAME) failed: %v", err)
}
friendlyName, _ := friendlyNameVal.(string)
deviceTypeName := pool.deviceTypeName()
return friendlyName == deviceTypeName || deviceDesc == deviceTypeName ||
removeNumberedSuffix(friendlyName) == deviceTypeName || removeNumberedSuffix(deviceDesc) == deviceTypeName, nil
ifname = windows.UTF16ToString(ifname16[:])
return
}
// checkReboot checks device install parameters if a system reboot is required.
func checkReboot(devInfo setupapi.DevInfo, devInfoData *setupapi.DevInfoData) bool {
devInstallParams, err := devInfo.DeviceInstallParams(devInfoData)
if err != nil {
return false
// DeleteDriver deletes all Wintun adapters in a pool and if there are no more adapters in any other
// pools, also removes Wintun from the driver store, usually called by uninstallers.
func (pool *Pool) DeleteDriver() (rebootRequired bool, err error) {
var _p0 uint32
r1, _, e1 := syscall.Syscall(procWintunDeletePoolDriver.Addr(), 2, uintptr(unsafe.Pointer(pool)), uintptr(unsafe.Pointer(&_p0)), 0)
rebootRequired = _p0 != 0
if r1 == 0 {
err = e1
}
return
return (devInstallParams.Flags & (setupapi.DI_NEEDREBOOT | setupapi.DI_NEEDRESTART)) != 0
}
// setQuietInstall sets device install parameters for a quiet installation
func setQuietInstall(devInfo setupapi.DevInfo, devInfoData *setupapi.DevInfoData) error {
devInstallParams, err := devInfo.DeviceInstallParams(devInfoData)
// SetName sets name of the Wintun adapter.
func (wintun *Adapter) SetName(ifname string) (err error) {
ifname16, err := windows.UTF16FromString(ifname)
if err != nil {
return err
}
devInstallParams.Flags |= setupapi.DI_QUIETINSTALL
return devInfo.SetDeviceInstallParams(devInfoData, devInstallParams)
}
// deviceTypeName returns pool-specific device type name.
func (pool Pool) deviceTypeName() string {
return fmt.Sprintf("%s Tunnel", pool)
}
// Name returns the name of the Wintun interface.
func (wintun *Interface) Name() (string, error) {
return nci.ConnectionName(&wintun.cfgInstanceID)
}
// SetName sets name of the Wintun interface.
func (wintun *Interface) SetName(ifname string) error {
const maxSuffix = 1000
availableIfname := ifname
for i := 0; ; i++ {
err := nci.SetConnectionName(&wintun.cfgInstanceID, availableIfname)
if err == windows.ERROR_DUP_NAME {
duplicateGuid, err2 := iphlpapi.InterfaceGUIDFromAlias(availableIfname)
if err2 == nil {
for j := 0; j < maxSuffix; j++ {
proposal := fmt.Sprintf("%s %d", ifname, j+1)
if proposal == availableIfname {
continue
}
err2 = nci.SetConnectionName(duplicateGuid, proposal)
if err2 == windows.ERROR_DUP_NAME {
continue
}
if err2 == nil {
err = nci.SetConnectionName(&wintun.cfgInstanceID, availableIfname)
if err == nil {
break
}
}
break
}
}
}
if err == nil {
break
}
if i > maxSuffix || err != windows.ERROR_DUP_NAME {
return fmt.Errorf("NciSetConnectionName failed: %v", err)
}
availableIfname = fmt.Sprintf("%s %d", ifname, i+1)
r1, _, e1 := syscall.Syscall(procWintunSetAdapterName.Addr(), 2, uintptr(wintun.handle), uintptr(unsafe.Pointer(&ifname16[0])), 0)
if r1 == 0 {
err = e1
}
// TODO: This should use NetSetup2 so that it doesn't get unset.
deviceRegKey, err := registry.OpenKey(registry.LOCAL_MACHINE, wintun.deviceRegKeyName(), registry.SET_VALUE)
if err != nil {
return fmt.Errorf("Device-level registry key open failed: %v", err)
}
defer deviceRegKey.Close()
err = deviceRegKey.SetStringValue("FriendlyName", wintun.pool.deviceTypeName())
if err != nil {
return fmt.Errorf("SetStringValue(FriendlyName) failed: %v", err)
}
return nil
}
// tcpipAdapterRegKeyName returns the adapter-specific TCP/IP network registry key name.
func (wintun *Interface) tcpipAdapterRegKeyName() string {
return fmt.Sprintf("SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Adapters\\%v", wintun.cfgInstanceID)
}
// deviceRegKeyName returns the device-level registry key name.
func (wintun *Interface) deviceRegKeyName() string {
return fmt.Sprintf("SYSTEM\\CurrentControlSet\\Enum\\%v", wintun.devInstanceID)
}
// Version returns the version of the Wintun driver and NDIS system currently loaded.
func (wintun *Interface) Version() (driverVersion string, ndisVersion string, err error) {
key, err := registry.OpenKey(registry.LOCAL_MACHINE, "SYSTEM\\CurrentControlSet\\Services\\Wintun", registry.QUERY_VALUE)
if err != nil {
return
}
defer key.Close()
driverMajor, _, err := key.GetIntegerValue("DriverMajorVersion")
if err != nil {
return
}
driverMinor, _, err := key.GetIntegerValue("DriverMinorVersion")
if err != nil {
return
}
ndisMajor, _, err := key.GetIntegerValue("NdisMajorVersion")
if err != nil {
return
}
ndisMinor, _, err := key.GetIntegerValue("NdisMinorVersion")
if err != nil {
return
}
driverVersion = fmt.Sprintf("%d.%d", driverMajor, driverMinor)
ndisVersion = fmt.Sprintf("%d.%d", ndisMajor, ndisMinor)
return
}
// tcpipInterfaceRegKeyName returns the interface-specific TCP/IP network registry key name.
func (wintun *Interface) tcpipInterfaceRegKeyName() (path string, err error) {
key, err := registry.OpenKey(registry.LOCAL_MACHINE, wintun.tcpipAdapterRegKeyName(), registry.QUERY_VALUE)
if err != nil {
return "", fmt.Errorf("Error opening adapter-specific TCP/IP network registry key: %v", err)
// RunningVersion returns the version of the running Wintun driver.
func RunningVersion() (version uint32, err error) {
r0, _, e1 := syscall.Syscall(procWintunGetRunningDriverVersion.Addr(), 0, 0, 0, 0)
version = uint32(r0)
if version == 0 {
err = e1
}
paths, _, err := key.GetStringsValue("IpConfig")
key.Close()
if err != nil {
return "", fmt.Errorf("Error reading IpConfig registry key: %v", err)
}
if len(paths) == 0 {
return "", errors.New("No TCP/IP interfaces found on adapter")
}
return fmt.Sprintf("SYSTEM\\CurrentControlSet\\Services\\%s", paths[0]), nil
return
}
// devInfoData returns TUN device info list handle and interface device info
// data. The device info list handle must be closed after use. In case the
// device is not found, windows.ERROR_OBJECT_NOT_FOUND is returned.
func (wintun *Interface) devInfoData() (setupapi.DevInfo, *setupapi.DevInfoData, error) {
// Create a list of network devices.
devInfo, err := setupapi.SetupDiGetClassDevsEx(&deviceClassNetGUID, "", 0, setupapi.DIGCF_PRESENT, setupapi.DevInfo(0), "")
if err != nil {
return 0, nil, fmt.Errorf("SetupDiGetClassDevsEx(%v) failed: %v", deviceClassNetGUID, err.Error())
// handle returns a handle to the adapter device object. Release handle with windows.CloseHandle
func (wintun *Adapter) OpenAdapterDeviceObject() (handle windows.Handle, err error) {
r0, _, e1 := syscall.Syscall(procWintunOpenAdapterDeviceObject.Addr(), 1, uintptr(wintun.handle), 0, 0)
handle = windows.Handle(r0)
if handle == windows.InvalidHandle {
err = e1
}
for index := 0; ; index++ {
devInfoData, err := devInfo.EnumDeviceInfo(index)
if err != nil {
if err == windows.ERROR_NO_MORE_ITEMS {
break
}
continue
}
// Get interface ID.
// TODO: Store some ID in the Wintun object such that this call isn't required.
wintun2, err := makeWintun(devInfo, devInfoData, wintun.pool)
if err != nil {
continue
}
if wintun.cfgInstanceID == wintun2.cfgInstanceID {
err = setQuietInstall(devInfo, devInfoData)
if err != nil {
devInfo.Close()
return 0, nil, fmt.Errorf("Setting quiet installation failed: %v", err)
}
return devInfo, devInfoData, nil
}
}
devInfo.Close()
return 0, nil, windows.ERROR_OBJECT_NOT_FOUND
return
}
// handle returns a handle to the interface device object.
func (wintun *Interface) handle() (windows.Handle, error) {
interfaces, err := setupapi.CM_Get_Device_Interface_List(wintun.devInstanceID, &deviceInterfaceNetGUID, setupapi.CM_GET_DEVICE_INTERFACE_LIST_PRESENT)
if err != nil {
return windows.InvalidHandle, fmt.Errorf("Error listing NDIS interfaces: %v", err)
}
handle, err := windows.CreateFile(windows.StringToUTF16Ptr(interfaces[0]), windows.GENERIC_READ|windows.GENERIC_WRITE, windows.FILE_SHARE_READ|windows.FILE_SHARE_WRITE|windows.FILE_SHARE_DELETE, nil, windows.OPEN_EXISTING, 0, 0)
if err != nil {
return windows.InvalidHandle, fmt.Errorf("Error opening NDIS device: %v", err)
}
return handle, nil
}
// GUID returns the GUID of the interface.
func (wintun *Interface) GUID() windows.GUID {
return wintun.cfgInstanceID
}
// LUID returns the LUID of the interface.
func (wintun *Interface) LUID() uint64 {
return ((uint64(wintun.luidIndex) & ((1 << 24) - 1)) << 24) | ((uint64(wintun.ifType) & ((1 << 16) - 1)) << 48)
}
func isOurHardwareID(property interface{}) bool {
hwidLC := strings.ToLower(hardwareID)
if hwids, ok := property.([]string); ok && len(hwids) > 0 {
for i := range hwids {
if strings.ToLower(hwids[i]) == hwidLC {
return true
}
}
}
if hwid, ok := property.(string); ok && strings.ToLower(hwid) == hwidLC {
return true
}
return false
// LUID returns the LUID of the adapter.
func (wintun *Adapter) LUID() (luid uint64) {
syscall.Syscall(procWintunGetAdapterLUID.Addr(), 2, uintptr(wintun.handle), uintptr(unsafe.Pointer(&luid)), 0)
return
}