chore: 调整内置winTun.dll部分

This commit is contained in:
Meta 2022-06-01 12:01:08 +08:00
parent fa2e6be05d
commit c95735f083
24 changed files with 309 additions and 457 deletions

2
go.mod
View file

@ -59,6 +59,4 @@ require (
gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
)
replace golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 => github.com/MetaCubeX/wintun-go v0.0.0-20220319102620-bbc5e6b2015e
replace github.com/vishvananda/netlink v1.2.0-beta.0.20220404152918-5e915e014938 => github.com/MetaCubeX/netlink v1.2.0-beta.0.20220529072258-d6853f887820

4
go.sum
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@ -12,8 +12,6 @@ github.com/Dreamacro/go-shadowsocks2 v0.1.8 h1:Ixejp5JscEc866gAvm/l6TFd7BOBvDviK
github.com/Dreamacro/go-shadowsocks2 v0.1.8/go.mod h1:51y4Q6tJoCE7e8TmYXcQRqfoxPfE9Cvn79V6pB6Df7Y=
github.com/MetaCubeX/netlink v1.2.0-beta.0.20220529072258-d6853f887820 h1:fGKWZ25VApYnuPZoNeqdH/nZtHa2XMajwH6Yj/OgoVc=
github.com/MetaCubeX/netlink v1.2.0-beta.0.20220529072258-d6853f887820/go.mod h1:twkDnbuQxJYemMlGd4JFIcuhgX83tXhKS2B/PRMpOho=
github.com/MetaCubeX/wintun-go v0.0.0-20220319102620-bbc5e6b2015e h1:GRfT5Lf8HP7RNczKIwTYLoCh1PPuIs/sY9hj+W+3deg=
github.com/MetaCubeX/wintun-go v0.0.0-20220319102620-bbc5e6b2015e/go.mod h1:ARUuShAtcziEJ/vnZ2hgoP+zc0J7Ukcca2S/NPDoQCc=
github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBTaaSFSlLx/70C2HPIMNZpVV8+vt/A+FMnYP11g=
@ -345,6 +343,8 @@ golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8T
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20220411194840-2f41105eb62f h1:GGU+dLjvlC3qDwqYgL6UgRmHXhOOgns0bZu2Ty5mm6U=
golang.org/x/xerrors v0.0.0-20220411194840-2f41105eb62f/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 h1:Ug9qvr1myri/zFN6xL17LSCBGFDnphBBhzmILHsM5TY=
golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
golang.zx2c4.com/wireguard v0.0.0-20220407013110-ef5c587f782d h1:q4JksJ2n0fmbXC0Aj0eOs6E0AcPqnKglxWXWFqGD6x0=
golang.zx2c4.com/wireguard v0.0.0-20220407013110-ef5c587f782d/go.mod h1:bVQfyl2sCM/QIIGHpWbFGfHPuDvqnCNkT6MQLTCjO/U=
golang.zx2c4.com/wireguard/windows v0.5.4-0.20220317000008-6432784c2469 h1:SEYkJAIuYAsSAPkCffOiYLtq5brBDSI+L0mRjSsvSTY=

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@ -0,0 +1,233 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
*/
package driver
import (
"fmt"
"runtime"
"sync"
"sync/atomic"
"syscall"
"unsafe"
"github.com/Dreamacro/clash/log"
"golang.org/x/sys/windows"
"golang.zx2c4.com/wireguard/windows/driver/memmod"
)
//go:linkname modwintun golang.zx2c4.com/wintun.modwintun
//go:linkname procWintunCreateAdapter golang.zx2c4.com/wintun.procWintunCreateAdapter
//go:linkname procWintunOpenAdapter golang.zx2c4.com/wintun.procWintunOpenAdapter
//go:linkname procWintunCloseAdapter golang.zx2c4.com/wintun.procWintunCloseAdapter
//go:linkname procWintunDeleteDriver golang.zx2c4.com/wintun.procWintunDeleteDriver
//go:linkname procWintunGetAdapterLUID golang.zx2c4.com/wintun.procWintunGetAdapterLUID
//go:linkname procWintunGetRunningDriverVersion golang.zx2c4.com/wintun.procWintunGetRunningDriverVersion
//go:linkname procWintunAllocateSendPacket golang.zx2c4.com/wintun.procWintunAllocateSendPacket
//go:linkname procWintunEndSession golang.zx2c4.com/wintun.procWintunEndSession
//go:linkname procWintunGetReadWaitEvent golang.zx2c4.com/wintun.procWintunGetReadWaitEvent
//go:linkname procWintunReceivePacket golang.zx2c4.com/wintun.procWintunReceivePacket
//go:linkname procWintunReleaseReceivePacket golang.zx2c4.com/wintun.procWintunReleaseReceivePacket
//go:linkname procWintunSendPacket golang.zx2c4.com/wintun.procWintunSendPacket
//go:linkname procWintunStartSession golang.zx2c4.com/wintun.procWintunStartSession
var (
modwintun *lazyDLL
procWintunCreateAdapter *lazyProc
procWintunOpenAdapter *lazyProc
procWintunCloseAdapter *lazyProc
procWintunDeleteDriver *lazyProc
procWintunGetAdapterLUID *lazyProc
procWintunGetRunningDriverVersion *lazyProc
procWintunAllocateSendPacket *lazyProc
procWintunEndSession *lazyProc
procWintunGetReadWaitEvent *lazyProc
procWintunReceivePacket *lazyProc
procWintunReleaseReceivePacket *lazyProc
procWintunSendPacket *lazyProc
procWintunStartSession *lazyProc
)
type loggerLevel int
const (
logInfo loggerLevel = iota
logWarn
logErr
)
func init() {
modwintun = newLazyDLL("wintun.dll", setupLogger)
procWintunCreateAdapter = modwintun.NewProc("WintunCreateAdapter")
procWintunOpenAdapter = modwintun.NewProc("WintunOpenAdapter")
procWintunCloseAdapter = modwintun.NewProc("WintunCloseAdapter")
procWintunDeleteDriver = modwintun.NewProc("WintunDeleteDriver")
procWintunGetAdapterLUID = modwintun.NewProc("WintunGetAdapterLUID")
procWintunGetRunningDriverVersion = modwintun.NewProc("WintunGetRunningDriverVersion")
procWintunAllocateSendPacket = modwintun.NewProc("WintunAllocateSendPacket")
procWintunEndSession = modwintun.NewProc("WintunEndSession")
procWintunGetReadWaitEvent = modwintun.NewProc("WintunGetReadWaitEvent")
procWintunReceivePacket = modwintun.NewProc("WintunReceivePacket")
procWintunReleaseReceivePacket = modwintun.NewProc("WintunReleaseReceivePacket")
procWintunSendPacket = modwintun.NewProc("WintunSendPacket")
procWintunStartSession = modwintun.NewProc("WintunStartSession")
}
func InitWintun() (err error) {
defer func() {
if r := recover(); r != nil {
err = fmt.Errorf("init wintun.dll error: %v", r)
}
}()
if err = modwintun.Load(); err != nil {
return
}
procWintunCreateAdapter.Addr()
procWintunOpenAdapter.Addr()
procWintunCloseAdapter.Addr()
procWintunDeleteDriver.Addr()
procWintunGetAdapterLUID.Addr()
procWintunGetRunningDriverVersion.Addr()
procWintunAllocateSendPacket.Addr()
procWintunEndSession.Addr()
procWintunGetReadWaitEvent.Addr()
procWintunReceivePacket.Addr()
procWintunReleaseReceivePacket.Addr()
procWintunSendPacket.Addr()
procWintunStartSession.Addr()
return
}
func newLazyDLL(name string, onLoad func(d *lazyDLL)) *lazyDLL {
return &lazyDLL{Name: name, onLoad: onLoad}
}
func logMessage(level loggerLevel, _ uint64, msg *uint16) int {
switch level {
case logInfo:
log.Infoln("[TUN] %s", windows.UTF16PtrToString(msg))
case logWarn:
log.Warnln("[TUN] %s", windows.UTF16PtrToString(msg))
case logErr:
log.Errorln("[TUN] %s", windows.UTF16PtrToString(msg))
default:
log.Debugln("[TUN] %s", windows.UTF16PtrToString(msg))
}
return 0
}
func setupLogger(dll *lazyDLL) {
var callback uintptr
if runtime.GOARCH == "386" {
callback = windows.NewCallback(func(level loggerLevel, _, _ uint32, msg *uint16) int {
return logMessage(level, 0, msg)
})
} else if runtime.GOARCH == "arm" {
callback = windows.NewCallback(func(level loggerLevel, _, _, _ uint32, msg *uint16) int {
return logMessage(level, 0, msg)
})
} else if runtime.GOARCH == "amd64" || runtime.GOARCH == "arm64" {
callback = windows.NewCallback(logMessage)
}
_, _, _ = syscall.SyscallN(dll.NewProc("WintunSetLogger").Addr(), callback)
}
func (d *lazyDLL) NewProc(name string) *lazyProc {
return &lazyProc{dll: d, Name: name}
}
type lazyProc struct {
Name string
mu sync.Mutex
dll *lazyDLL
addr uintptr
}
func (p *lazyProc) Find() error {
if atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(&p.addr))) != nil {
return nil
}
p.mu.Lock()
defer p.mu.Unlock()
if p.addr != 0 {
return nil
}
err := p.dll.Load()
if err != nil {
return fmt.Errorf("error loading DLL: %s, MODULE: %s, error: %w", p.dll.Name, p.Name, err)
}
addr, err := p.nameToAddr()
if err != nil {
return fmt.Errorf("error getting %s address: %w", p.Name, err)
}
atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(&p.addr)), unsafe.Pointer(addr))
return nil
}
func (p *lazyProc) Addr() uintptr {
err := p.Find()
if err != nil {
panic(err)
}
return p.addr
}
func (p *lazyProc) Load() error {
return p.dll.Load()
}
type lazyDLL struct {
Name string
Base windows.Handle
mu sync.Mutex
module *memmod.Module
onLoad func(d *lazyDLL)
}
func (d *lazyDLL) Load() error {
if atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(&d.module))) != nil {
return nil
}
d.mu.Lock()
defer d.mu.Unlock()
if d.module != nil {
return nil
}
module, err := memmod.LoadLibrary(dllContent)
if err != nil {
return fmt.Errorf("unable to load library: %w", err)
}
d.Base = windows.Handle(module.BaseAddr())
atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(&d.module)), unsafe.Pointer(module))
if d.onLoad != nil {
d.onLoad(d)
}
return nil
}
func (p *lazyProc) nameToAddr() (uintptr, error) {
return p.dll.module.ProcAddressByName(p.Name)
}

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@ -0,0 +1,13 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
*/
package driver
import (
_ "embed"
)
//go:embed x86/wintun.dll
var dllContent []byte

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@ -0,0 +1,13 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
*/
package driver
import (
_ "embed"
)
//go:embed amd64/wintun.dll
var dllContent []byte

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@ -0,0 +1,13 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
*/
package driver
import (
_ "embed"
)
//go:embed arm/wintun.dll
var dllContent []byte

View file

@ -0,0 +1,13 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
*/
package driver
import (
_ "embed"
)
//go:embed arm64/wintun.dll
var dllContent []byte

View file

@ -1,11 +1,10 @@
//go:build windows
// +build windows
// Modified from: https://git.zx2c4.com/wireguard-go/tree/tun/wintun
// https://git.zx2c4.com/wireguard-go/tree/tun/wintun
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
*/
package wintun
package driver

View file

@ -3,7 +3,6 @@
package tun
import (
"errors"
"fmt"
"os"
"runtime"
@ -43,11 +42,11 @@ func Open(name string, mtu uint32) (_ device.Device, err error) {
forcedMTU = int(t.mtu)
}
nt, err := tun.CreateTUN(t.name, forcedMTU) // forcedMTU do not work on wintun, need to be setting by other way
nt, err := newDevice(t.name, forcedMTU) // forcedMTU do not work on wintun, need to be setting by other way
// retry if abnormal exit on Windows at last time
if err != nil && runtime.GOOS == "windows" && errors.Is(err, os.ErrExist) {
nt, err = tun.CreateTUN(t.name, forcedMTU)
// retry if abnormal exit at last time on Windows
if err != nil && runtime.GOOS == "windows" && os.IsExist(err) {
nt, err = newDevice(t.name, forcedMTU)
}
if err != nil {

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@ -2,7 +2,13 @@
package tun
import "golang.zx2c4.com/wireguard/tun"
const (
offset = 4 /* 4 bytes TUN_PI */
defaultMTU = 1500
)
func newDevice(name string, mtu int) (tun.Device, error) {
return tun.CreateTUN(name, mtu)
}

View file

@ -1,6 +1,8 @@
package tun
import (
"github.com/Dreamacro/clash/listener/tun/device/tun/driver"
"golang.org/x/sys/windows"
"golang.zx2c4.com/wireguard/tun"
)
@ -20,3 +22,11 @@ func init() {
func (t *TUN) LUID() uint64 {
return t.nt.LUID()
}
func newDevice(name string, mtu int) (nt tun.Device, err error) {
if err = driver.InitWintun(); err != nil {
return
}
return tun.CreateTUN(name, mtu)
}

View file

@ -1,94 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
*/
package wintun
import (
"fmt"
"golang.zx2c4.com/wintun/embed_dll"
"golang.zx2c4.com/wireguard/windows/driver/memmod"
"sync"
"sync/atomic"
"unsafe"
)
func newLazyDLL(name string, onLoad func(d *lazyDLL)) *lazyDLL {
return &lazyDLL{Name: name, onLoad: onLoad}
}
func (d *lazyDLL) NewProc(name string) *lazyProc {
return &lazyProc{dll: d, Name: name}
}
type lazyProc struct {
Name string
mu sync.Mutex
dll *lazyDLL
addr uintptr
}
func (p *lazyProc) Find() error {
if atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(&p.addr))) != nil {
return nil
}
p.mu.Lock()
defer p.mu.Unlock()
if p.addr != 0 {
return nil
}
err := p.dll.Load()
if err != nil {
return fmt.Errorf("Error loading %v DLL: %w", p.dll.Name, err)
}
addr, err := p.nameToAddr()
if err != nil {
return fmt.Errorf("Error getting %v address: %w", p.Name, err)
}
atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(&p.addr)), unsafe.Pointer(addr))
return nil
}
func (p *lazyProc) Addr() uintptr {
err := p.Find()
if err != nil {
panic(err)
}
return p.addr
}
type lazyDLL struct {
Name string
mu sync.Mutex
module *memmod.Module
onLoad func(d *lazyDLL)
}
func (d *lazyDLL) Load() error {
if atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(&d.module))) != nil {
return nil
}
d.mu.Lock()
defer d.mu.Unlock()
if d.module != nil {
return nil
}
module, err := memmod.LoadLibrary(embed_dll.DDlContent)
if err != nil {
return fmt.Errorf("unable to load library: %w", err)
}
atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(&d.module)), unsafe.Pointer(module))
if d.onLoad != nil {
d.onLoad(d)
}
return nil
}
func (p *lazyProc) nameToAddr() (uintptr, error) {
return p.dll.module.ProcAddressByName(p.Name)
}

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@ -1,21 +0,0 @@
package embed_dll
// Copyright 2020 MeshStep Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
import (
_ "embed"
)
//go:embed x86/wintun.dll
var DDlContent []byte

View file

@ -1,21 +0,0 @@
package embed_dll
// Copyright 2020 MeshStep Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
import (
_ "embed"
)
//go:embed amd64/wintun.dll
var DDlContent []byte

View file

@ -1,21 +0,0 @@
package embed_dll
// Copyright 2020 MeshStep Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
import (
_ "embed"
)
//go:embed arm/wintun.dll
var DDlContent []byte

View file

@ -1,21 +0,0 @@
package embed_dll
// Copyright 2020 MeshStep Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
import (
_ "embed"
)
//go:embed arm64/wintun.dll
var DDlContent []byte

View file

@ -1,8 +0,0 @@
module golang.zx2c4.com/wintun
go 1.18
require (
golang.org/x/sys v0.0.0-20220318055525-2edf467146b5
golang.zx2c4.com/wireguard/windows v0.5.3
)

View file

@ -1,17 +0,0 @@
github.com/MetaCubeX/Clash.Meta v1.9.1 h1:jHZhVRBxFuaCRBN9vxB/FL5R16wY4kIgNqjszdXPeLs=
github.com/MetaCubeX/Clash.Meta v1.9.1/go.mod h1:/I4cSh+PcgmtS5SEnFp8RANL6aVRd3i9YOult+mKLhU=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/sirupsen/logrus v1.8.1 h1:dJKuHgqk1NNQlqoA6BTlM1Wf9DOH3NBjQyu0h9+AZZE=
github.com/sirupsen/logrus v1.8.1/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
go.uber.org/atomic v1.9.0 h1:ECmE8Bn/WFTYwEW/bpKD3M8VtR/zQVbavAoalC1PYyE=
golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20220317061510-51cd9980dadf h1:Fm4IcnUL803i92qDlmB0obyHmosDrxZWxJL3gIeNqOw=
golang.org/x/sys v0.0.0-20220317061510-51cd9980dadf/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.zx2c4.com/wireguard/windows v0.5.3 h1:On6j2Rpn3OEMXqBq00QEDC7bWSZrPIHKIus8eIuExIE=
golang.zx2c4.com/wireguard/windows v0.5.3/go.mod h1:9TEe8TJmtwyQebdFwAkEWOPr3prrtqm+REGFifP60hI=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=

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@ -1,90 +0,0 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
*/
package wintun
import (
"syscall"
"unsafe"
"golang.org/x/sys/windows"
)
type Session struct {
handle uintptr
}
const (
PacketSizeMax = 0xffff // Maximum packet size
RingCapacityMin = 0x20000 // Minimum ring capacity (128 kiB)
RingCapacityMax = 0x4000000 // Maximum ring capacity (64 MiB)
)
// Packet with data
type Packet struct {
Next *Packet // Pointer to next packet in queue
Size uint32 // Size of packet (max WINTUN_MAX_IP_PACKET_SIZE)
Data *[PacketSizeMax]byte // Pointer to layer 3 IPv4 or IPv6 packet
}
var (
procWintunAllocateSendPacket = modwintun.NewProc("WintunAllocateSendPacket")
procWintunEndSession = modwintun.NewProc("WintunEndSession")
procWintunGetReadWaitEvent = modwintun.NewProc("WintunGetReadWaitEvent")
procWintunReceivePacket = modwintun.NewProc("WintunReceivePacket")
procWintunReleaseReceivePacket = modwintun.NewProc("WintunReleaseReceivePacket")
procWintunSendPacket = modwintun.NewProc("WintunSendPacket")
procWintunStartSession = modwintun.NewProc("WintunStartSession")
)
func (wintun *Adapter) StartSession(capacity uint32) (session Session, err error) {
r0, _, e1 := syscall.Syscall(procWintunStartSession.Addr(), 2, uintptr(wintun.handle), uintptr(capacity), 0)
if r0 == 0 {
err = e1
} else {
session = Session{r0}
}
return
}
func (session Session) End() {
syscall.Syscall(procWintunEndSession.Addr(), 1, session.handle, 0, 0)
session.handle = 0
}
func (session Session) ReadWaitEvent() (handle windows.Handle) {
r0, _, _ := syscall.Syscall(procWintunGetReadWaitEvent.Addr(), 1, session.handle, 0, 0)
handle = windows.Handle(r0)
return
}
func (session Session) ReceivePacket() (packet []byte, err error) {
var packetSize uint32
r0, _, e1 := syscall.Syscall(procWintunReceivePacket.Addr(), 2, session.handle, uintptr(unsafe.Pointer(&packetSize)), 0)
if r0 == 0 {
err = e1
return
}
packet = unsafe.Slice((*byte)(unsafe.Pointer(r0)), packetSize)
return
}
func (session Session) ReleaseReceivePacket(packet []byte) {
syscall.Syscall(procWintunReleaseReceivePacket.Addr(), 2, session.handle, uintptr(unsafe.Pointer(&packet[0])), 0)
}
func (session Session) AllocateSendPacket(packetSize int) (packet []byte, err error) {
r0, _, e1 := syscall.Syscall(procWintunAllocateSendPacket.Addr(), 2, session.handle, uintptr(packetSize), 0)
if r0 == 0 {
err = e1
return
}
packet = unsafe.Slice((*byte)(unsafe.Pointer(r0)), packetSize)
return
}
func (session Session) SendPacket(packet []byte) {
syscall.Syscall(procWintunSendPacket.Addr(), 2, session.handle, uintptr(unsafe.Pointer(&packet[0])), 0)
}

View file

@ -1,152 +0,0 @@
//go:build windows
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
*/
package wintun
import (
"log"
"runtime"
"syscall"
"unsafe"
"golang.org/x/sys/windows"
)
type loggerLevel int
const (
logInfo loggerLevel = iota
logWarn
logErr
)
const AdapterNameMax = 128
type Adapter struct {
handle uintptr
}
var (
modwintun = newLazyDLL("wintun.dll", setupLogger)
procWintunCreateAdapter = modwintun.NewProc("WintunCreateAdapter")
procWintunOpenAdapter = modwintun.NewProc("WintunOpenAdapter")
procWintunCloseAdapter = modwintun.NewProc("WintunCloseAdapter")
procWintunDeleteDriver = modwintun.NewProc("WintunDeleteDriver")
procWintunGetAdapterLUID = modwintun.NewProc("WintunGetAdapterLUID")
procWintunGetRunningDriverVersion = modwintun.NewProc("WintunGetRunningDriverVersion")
)
type TimestampedWriter interface {
WriteWithTimestamp(p []byte, ts int64) (n int, err error)
}
func logMessage(level loggerLevel, timestamp uint64, msg *uint16) int {
if tw, ok := log.Default().Writer().(TimestampedWriter); ok {
tw.WriteWithTimestamp([]byte(log.Default().Prefix()+windows.UTF16PtrToString(msg)), (int64(timestamp)-116444736000000000)*100)
} else {
log.Println(windows.UTF16PtrToString(msg))
}
return 0
}
func setupLogger(dll *lazyDLL) {
var callback uintptr
if runtime.GOARCH == "386" {
callback = windows.NewCallback(func(level loggerLevel, timestampLow, timestampHigh uint32, msg *uint16) int {
return logMessage(level, uint64(timestampHigh)<<32|uint64(timestampLow), msg)
})
} else if runtime.GOARCH == "arm" {
callback = windows.NewCallback(func(level loggerLevel, _, timestampLow, timestampHigh uint32, msg *uint16) int {
return logMessage(level, uint64(timestampHigh)<<32|uint64(timestampLow), msg)
})
} else if runtime.GOARCH == "amd64" || runtime.GOARCH == "arm64" {
callback = windows.NewCallback(logMessage)
}
syscall.Syscall(dll.NewProc("WintunSetLogger").Addr(), 1, callback, 0, 0)
}
func closeAdapter(wintun *Adapter) {
syscall.Syscall(procWintunCloseAdapter.Addr(), 1, wintun.handle, 0, 0)
}
// CreateAdapter creates a Wintun adapter. name is the cosmetic name of the adapter.
// tunnelType represents the type of adapter and should be "Wintun". 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.
func CreateAdapter(name string, tunnelType string, requestedGUID *windows.GUID) (wintun *Adapter, err error) {
var name16 *uint16
name16, err = windows.UTF16PtrFromString(name)
if err != nil {
return
}
var tunnelType16 *uint16
tunnelType16, err = windows.UTF16PtrFromString(tunnelType)
if err != nil {
return
}
r0, _, e1 := syscall.Syscall(procWintunCreateAdapter.Addr(), 3, uintptr(unsafe.Pointer(name16)), uintptr(unsafe.Pointer(tunnelType16)), uintptr(unsafe.Pointer(requestedGUID)))
if r0 == 0 {
err = e1
return
}
wintun = &Adapter{handle: r0}
runtime.SetFinalizer(wintun, closeAdapter)
return
}
// OpenAdapter opens an existing Wintun adapter by name.
func OpenAdapter(name string) (wintun *Adapter, err error) {
var name16 *uint16
name16, err = windows.UTF16PtrFromString(name)
if err != nil {
return
}
r0, _, e1 := syscall.Syscall(procWintunOpenAdapter.Addr(), 1, uintptr(unsafe.Pointer(name16)), 0, 0)
if r0 == 0 {
err = e1
return
}
wintun = &Adapter{handle: r0}
runtime.SetFinalizer(wintun, closeAdapter)
return
}
// Close closes a Wintun adapter.
func (wintun *Adapter) Close() (err error) {
runtime.SetFinalizer(wintun, nil)
r1, _, e1 := syscall.Syscall(procWintunCloseAdapter.Addr(), 1, wintun.handle, 0, 0)
if r1 == 0 {
err = e1
}
return
}
// Uninstall removes the driver from the system if no drivers are currently in use.
func Uninstall() (err error) {
r1, _, e1 := syscall.Syscall(procWintunDeleteDriver.Addr(), 0, 0, 0, 0)
if r1 == 0 {
err = e1
}
return
}
// RunningVersion returns the version of the loaded 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
}
return
}
// 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
}