Remove broken windows cruft
This commit is contained in:
Jason A. Donenfeld
parent
ff3f2455e5
commit
2ae22ac65d
483
tun_windows.go
483
tun_windows.go
@ -1,483 +0,0 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0
|
||||
*
|
||||
* Copyright (C) 2017-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
|
||||
* Copyright (C) 2017-2018 Mathias N. Hall-Andersen <mathias@hall-andersen.dk>.
|
||||
*/
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"fmt"
|
||||
"golang.org/x/sys/windows"
|
||||
"golang.org/x/sys/windows/registry"
|
||||
"net"
|
||||
"sync"
|
||||
"syscall"
|
||||
"time"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
/* Relies on the OpenVPN TAP-Windows driver (NDIS 6 version)
|
||||
*
|
||||
* https://github.com/OpenVPN/tap-windows
|
||||
*/
|
||||
|
||||
type NativeTUN struct {
|
||||
fd windows.Handle
|
||||
rl sync.Mutex
|
||||
wl sync.Mutex
|
||||
ro *windows.Overlapped
|
||||
wo *windows.Overlapped
|
||||
events chan TUNEvent
|
||||
name string
|
||||
}
|
||||
|
||||
const (
|
||||
METHOD_BUFFERED = 0
|
||||
ComponentID = "tap0901" // tap0801
|
||||
)
|
||||
|
||||
func ctl_code(device_type, function, method, access uint32) uint32 {
|
||||
return (device_type << 16) | (access << 14) | (function << 2) | method
|
||||
}
|
||||
|
||||
func TAP_CONTROL_CODE(request, method uint32) uint32 {
|
||||
return ctl_code(file_device_unknown, request, method, 0)
|
||||
}
|
||||
|
||||
var (
|
||||
errIfceNameNotFound = errors.New("Failed to find the name of interface")
|
||||
|
||||
TAP_IOCTL_GET_MAC = TAP_CONTROL_CODE(1, METHOD_BUFFERED)
|
||||
TAP_IOCTL_GET_VERSION = TAP_CONTROL_CODE(2, METHOD_BUFFERED)
|
||||
TAP_IOCTL_GET_MTU = TAP_CONTROL_CODE(3, METHOD_BUFFERED)
|
||||
TAP_IOCTL_GET_INFO = TAP_CONTROL_CODE(4, METHOD_BUFFERED)
|
||||
TAP_IOCTL_CONFIG_POINT_TO_POINT = TAP_CONTROL_CODE(5, METHOD_BUFFERED)
|
||||
TAP_IOCTL_SET_MEDIA_STATUS = TAP_CONTROL_CODE(6, METHOD_BUFFERED)
|
||||
TAP_IOCTL_CONFIG_DHCP_MASQ = TAP_CONTROL_CODE(7, METHOD_BUFFERED)
|
||||
TAP_IOCTL_GET_LOG_LINE = TAP_CONTROL_CODE(8, METHOD_BUFFERED)
|
||||
TAP_IOCTL_CONFIG_DHCP_SET_OPT = TAP_CONTROL_CODE(9, METHOD_BUFFERED)
|
||||
TAP_IOCTL_CONFIG_TUN = TAP_CONTROL_CODE(10, METHOD_BUFFERED)
|
||||
|
||||
file_device_unknown = uint32(0x00000022)
|
||||
nCreateEvent,
|
||||
nResetEvent,
|
||||
nGetOverlappedResult uintptr
|
||||
)
|
||||
|
||||
func init() {
|
||||
k32, err := windows.LoadLibrary("kernel32.dll")
|
||||
if err != nil {
|
||||
panic("LoadLibrary " + err.Error())
|
||||
}
|
||||
defer windows.FreeLibrary(k32)
|
||||
nCreateEvent = getProcAddr(k32, "CreateEventW")
|
||||
nResetEvent = getProcAddr(k32, "ResetEvent")
|
||||
nGetOverlappedResult = getProcAddr(k32, "GetOverlappedResult")
|
||||
}
|
||||
|
||||
/* implementation of the read/write/closer interface */
|
||||
|
||||
func getProcAddr(lib windows.Handle, name string) uintptr {
|
||||
addr, err := windows.GetProcAddress(lib, name)
|
||||
if err != nil {
|
||||
panic(name + " " + err.Error())
|
||||
}
|
||||
return addr
|
||||
}
|
||||
|
||||
func resetEvent(h windows.Handle) error {
|
||||
r, _, err := syscall.Syscall(nResetEvent, 1, uintptr(h), 0, 0)
|
||||
if r == 0 {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func getOverlappedResult(h windows.Handle, overlapped *windows.Overlapped) (int, error) {
|
||||
var n int
|
||||
r, _, err := syscall.Syscall6(
|
||||
nGetOverlappedResult,
|
||||
4,
|
||||
uintptr(h),
|
||||
uintptr(unsafe.Pointer(overlapped)),
|
||||
uintptr(unsafe.Pointer(&n)), 1, 0, 0)
|
||||
|
||||
if r == 0 {
|
||||
return n, err
|
||||
}
|
||||
return n, nil
|
||||
}
|
||||
|
||||
func newOverlapped() (*windows.Overlapped, error) {
|
||||
var overlapped windows.Overlapped
|
||||
r, _, err := syscall.Syscall6(nCreateEvent, 4, 0, 1, 0, 0, 0, 0)
|
||||
if r == 0 {
|
||||
return nil, err
|
||||
}
|
||||
overlapped.HEvent = windows.Handle(r)
|
||||
return &overlapped, nil
|
||||
}
|
||||
|
||||
func (f *NativeTUN) Events() chan TUNEvent {
|
||||
return f.events
|
||||
}
|
||||
|
||||
func (f *NativeTUN) Close() error {
|
||||
close(f.events)
|
||||
err := windows.Close(f.fd)
|
||||
return err
|
||||
}
|
||||
|
||||
func (f *NativeTUN) Write(b []byte) (int, error) {
|
||||
f.wl.Lock()
|
||||
defer f.wl.Unlock()
|
||||
|
||||
if err := resetEvent(f.wo.HEvent); err != nil {
|
||||
return 0, err
|
||||
}
|
||||
var n uint32
|
||||
err := windows.WriteFile(f.fd, b, &n, f.wo)
|
||||
if err != nil && err != windows.ERROR_IO_PENDING {
|
||||
return int(n), err
|
||||
}
|
||||
return getOverlappedResult(f.fd, f.wo)
|
||||
}
|
||||
|
||||
func (f *NativeTUN) Read(b []byte) (int, error) {
|
||||
f.rl.Lock()
|
||||
defer f.rl.Unlock()
|
||||
|
||||
if err := resetEvent(f.ro.HEvent); err != nil {
|
||||
return 0, err
|
||||
}
|
||||
var done uint32
|
||||
err := windows.ReadFile(f.fd, b, &done, f.ro)
|
||||
if err != nil && err != windows.ERROR_IO_PENDING {
|
||||
return int(done), err
|
||||
}
|
||||
return getOverlappedResult(f.fd, f.ro)
|
||||
}
|
||||
|
||||
func getdeviceid(
|
||||
targetComponentId string,
|
||||
targetDeviceName string,
|
||||
) (deviceid string, err error) {
|
||||
|
||||
getName := func(instanceId string) (string, error) {
|
||||
path := fmt.Sprintf(
|
||||
`SYSTEM\CurrentControlSet\Control\Network\{4D36E972-E325-11CE-BFC1-08002BE10318}\%s\Connection`,
|
||||
instanceId,
|
||||
)
|
||||
|
||||
key, err := registry.OpenKey(
|
||||
registry.LOCAL_MACHINE,
|
||||
path,
|
||||
registry.READ,
|
||||
)
|
||||
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
defer key.Close()
|
||||
|
||||
val, _, err := key.GetStringValue("Name")
|
||||
key.Close()
|
||||
return val, err
|
||||
}
|
||||
|
||||
getInstanceId := func(keyName string) (string, string, error) {
|
||||
path := fmt.Sprintf(
|
||||
`SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002BE10318}\%s`,
|
||||
keyName,
|
||||
)
|
||||
|
||||
key, err := registry.OpenKey(
|
||||
registry.LOCAL_MACHINE,
|
||||
path,
|
||||
registry.READ,
|
||||
)
|
||||
|
||||
if err != nil {
|
||||
return "", "", err
|
||||
}
|
||||
defer key.Close()
|
||||
|
||||
componentId, _, err := key.GetStringValue("ComponentId")
|
||||
if err != nil {
|
||||
return "", "", err
|
||||
}
|
||||
|
||||
instanceId, _, err := key.GetStringValue("NetCfgInstanceId")
|
||||
|
||||
return componentId, instanceId, err
|
||||
}
|
||||
|
||||
// find list of all network devices
|
||||
|
||||
k, err := registry.OpenKey(
|
||||
registry.LOCAL_MACHINE,
|
||||
`SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002BE10318}`,
|
||||
registry.READ,
|
||||
)
|
||||
|
||||
if err != nil {
|
||||
return "", fmt.Errorf("Failed to open the adapter registry, TAP driver may be not installed, %v", err)
|
||||
}
|
||||
|
||||
defer k.Close()
|
||||
|
||||
keys, err := k.ReadSubKeyNames(-1)
|
||||
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
// look for matching component id and name
|
||||
|
||||
var componentFound bool
|
||||
|
||||
for _, v := range keys {
|
||||
|
||||
componentId, instanceId, err := getInstanceId(v)
|
||||
if err != nil || componentId != targetComponentId {
|
||||
continue
|
||||
}
|
||||
|
||||
componentFound = true
|
||||
|
||||
deviceName, err := getName(instanceId)
|
||||
if err != nil || deviceName != targetDeviceName {
|
||||
continue
|
||||
}
|
||||
|
||||
return instanceId, nil
|
||||
}
|
||||
|
||||
// provide a descriptive error message
|
||||
|
||||
if componentFound {
|
||||
return "", fmt.Errorf("Unable to find tun/tap device with name = %s", targetDeviceName)
|
||||
}
|
||||
|
||||
return "", fmt.Errorf(
|
||||
"Unable to find device in registry with ComponentId = %s, is tap-windows installed?",
|
||||
targetComponentId,
|
||||
)
|
||||
}
|
||||
|
||||
// setStatus is used to bring up or bring down the interface
|
||||
func setStatus(fd windows.Handle, status bool) error {
|
||||
var code [4]byte
|
||||
if status {
|
||||
binary.LittleEndian.PutUint32(code[:], 1)
|
||||
}
|
||||
|
||||
var bytesReturned uint32
|
||||
rdbbuf := make([]byte, windows.MAXIMUM_REPARSE_DATA_BUFFER_SIZE)
|
||||
return windows.DeviceIoControl(
|
||||
fd,
|
||||
TAP_IOCTL_SET_MEDIA_STATUS,
|
||||
&code[0],
|
||||
uint32(4),
|
||||
&rdbbuf[0],
|
||||
uint32(len(rdbbuf)),
|
||||
&bytesReturned,
|
||||
nil,
|
||||
)
|
||||
}
|
||||
|
||||
/* When operating in TUN mode we must assign an ip address & subnet to the device.
|
||||
*
|
||||
*/
|
||||
func setTUN(fd windows.Handle, network string) error {
|
||||
var bytesReturned uint32
|
||||
rdbbuf := make([]byte, windows.MAXIMUM_REPARSE_DATA_BUFFER_SIZE)
|
||||
localIP, remoteNet, err := net.ParseCIDR(network)
|
||||
|
||||
if err != nil {
|
||||
return fmt.Errorf("Failed to parse network CIDR in config, %v", err)
|
||||
}
|
||||
|
||||
if localIP.To4() == nil {
|
||||
return fmt.Errorf("Provided network(%s) is not a valid IPv4 address", network)
|
||||
}
|
||||
|
||||
var param [12]byte
|
||||
|
||||
copy(param[0:4], localIP.To4())
|
||||
copy(param[4:8], remoteNet.IP.To4())
|
||||
copy(param[8:12], remoteNet.Mask)
|
||||
|
||||
return windows.DeviceIoControl(
|
||||
fd,
|
||||
TAP_IOCTL_CONFIG_TUN,
|
||||
¶m[0],
|
||||
uint32(12),
|
||||
&rdbbuf[0],
|
||||
uint32(len(rdbbuf)),
|
||||
&bytesReturned,
|
||||
nil,
|
||||
)
|
||||
}
|
||||
|
||||
func (tun *NativeTUN) MTU() (int, error) {
|
||||
var mtu [4]byte
|
||||
var bytesReturned uint32
|
||||
err := windows.DeviceIoControl(
|
||||
tun.fd,
|
||||
TAP_IOCTL_GET_MTU,
|
||||
&mtu[0],
|
||||
uint32(len(mtu)),
|
||||
&mtu[0],
|
||||
uint32(len(mtu)),
|
||||
&bytesReturned,
|
||||
nil,
|
||||
)
|
||||
val := binary.LittleEndian.Uint32(mtu[:])
|
||||
return int(val), err
|
||||
}
|
||||
|
||||
func (tun *NativeTUN) Name() string {
|
||||
return tun.name
|
||||
}
|
||||
|
||||
func CreateTUN(name string) (TUNDevice, error) {
|
||||
|
||||
// find the device in registry.
|
||||
|
||||
deviceid, err := getdeviceid(ComponentID, name)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
path := "\\\\.\\Global\\" + deviceid + ".tap"
|
||||
pathp, err := windows.UTF16PtrFromString(path)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// create TUN device
|
||||
|
||||
handle, err := windows.CreateFile(
|
||||
pathp,
|
||||
windows.GENERIC_READ|windows.GENERIC_WRITE,
|
||||
0,
|
||||
nil,
|
||||
windows.OPEN_EXISTING,
|
||||
windows.FILE_ATTRIBUTE_SYSTEM|windows.FILE_FLAG_OVERLAPPED,
|
||||
0,
|
||||
)
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
ro, err := newOverlapped()
|
||||
if err != nil {
|
||||
windows.Close(handle)
|
||||
return nil, err
|
||||
}
|
||||
|
||||
wo, err := newOverlapped()
|
||||
if err != nil {
|
||||
windows.Close(handle)
|
||||
return nil, err
|
||||
}
|
||||
|
||||
tun := &NativeTUN{
|
||||
fd: handle,
|
||||
name: name,
|
||||
ro: ro,
|
||||
wo: wo,
|
||||
events: make(chan TUNEvent, 5),
|
||||
}
|
||||
|
||||
// find addresses of interface
|
||||
// TODO: fix this hack, the question is how
|
||||
|
||||
inter, err := net.InterfaceByName(name)
|
||||
if err != nil {
|
||||
windows.Close(handle)
|
||||
return nil, err
|
||||
}
|
||||
|
||||
addrs, err := inter.Addrs()
|
||||
if err != nil {
|
||||
windows.Close(handle)
|
||||
return nil, err
|
||||
}
|
||||
|
||||
var ip net.IP
|
||||
for _, addr := range addrs {
|
||||
ip = func() net.IP {
|
||||
switch v := addr.(type) {
|
||||
case *net.IPNet:
|
||||
return v.IP.To4()
|
||||
case *net.IPAddr:
|
||||
return v.IP.To4()
|
||||
}
|
||||
return nil
|
||||
}()
|
||||
if ip != nil {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if ip == nil {
|
||||
windows.Close(handle)
|
||||
return nil, errors.New("No IPv4 address found for interface")
|
||||
}
|
||||
|
||||
// bring up device.
|
||||
|
||||
if err := setStatus(handle, true); err != nil {
|
||||
windows.Close(handle)
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// set tun mode
|
||||
|
||||
mask := ip.String() + "/0"
|
||||
if err := setTUN(handle, mask); err != nil {
|
||||
windows.Close(handle)
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// start listener
|
||||
|
||||
go func(native *NativeTUN, ifname string) {
|
||||
// TODO: Fix this very niave implementation
|
||||
var (
|
||||
statusUp bool
|
||||
statusMTU int
|
||||
)
|
||||
|
||||
for ; ; time.Sleep(time.Second) {
|
||||
intr, err := net.InterfaceByName(name)
|
||||
if err != nil {
|
||||
// TODO: handle
|
||||
return
|
||||
}
|
||||
|
||||
// Up / Down event
|
||||
up := (intr.Flags & net.FlagUp) != 0
|
||||
if up != statusUp && up {
|
||||
native.events <- TUNEventUp
|
||||
}
|
||||
if up != statusUp && !up {
|
||||
native.events <- TUNEventDown
|
||||
}
|
||||
statusUp = up
|
||||
|
||||
// MTU changes
|
||||
if intr.MTU != statusMTU {
|
||||
native.events <- TUNEventMTUUpdate
|
||||
}
|
||||
statusMTU = intr.MTU
|
||||
}
|
||||
}(tun, name)
|
||||
|
||||
return tun, nil
|
||||
}
|
||||
@ -1,50 +0,0 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0
|
||||
*
|
||||
* Copyright (C) 2017-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
|
||||
* Copyright (C) 2017-2018 Mathias N. Hall-Andersen <mathias@hall-andersen.dk>.
|
||||
*/
|
||||
|
||||
package main
|
||||
|
||||
/* UAPI on windows uses a bidirectional named pipe
|
||||
*/
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/Microsoft/go-winio"
|
||||
"golang.org/x/sys/windows"
|
||||
"net"
|
||||
)
|
||||
|
||||
const (
|
||||
ipcErrorIO = -int64(windows.ERROR_BROKEN_PIPE)
|
||||
ipcErrorProtocol = -int64(windows.ERROR_INVALID_NAME)
|
||||
ipcErrorInvalid = -int64(windows.ERROR_INVALID_PARAMETER)
|
||||
ipcErrorPortInUse = -int64(windows.ERROR_ALREADY_EXISTS)
|
||||
)
|
||||
|
||||
const PipeNameFmt = "\\\\.\\pipe\\wireguard-ipc-%s"
|
||||
|
||||
type UAPIListener struct {
|
||||
listener net.Listener
|
||||
}
|
||||
|
||||
func (uapi *UAPIListener) Accept() (net.Conn, error) {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
func (uapi *UAPIListener) Close() error {
|
||||
return uapi.listener.Close()
|
||||
}
|
||||
|
||||
func (uapi *UAPIListener) Addr() net.Addr {
|
||||
return nil
|
||||
}
|
||||
|
||||
func NewUAPIListener(name string) (net.Listener, error) {
|
||||
path := fmt.Sprintf(PipeNameFmt, name)
|
||||
return winio.ListenPipe(path, &winio.PipeConfig{
|
||||
InputBufferSize: 2048,
|
||||
OutputBufferSize: 2048,
|
||||
})
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user