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This commit is contained in:
MetaCubeX
2022-03-17 23:24:07 +08:00
parent 30f1b29257
commit 435bee0ca2
37 changed files with 329 additions and 727 deletions
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1
listener/listener.go
View File

@ -5,7 +5,6 @@ import (
"github.com/Dreamacro/clash/listener/inner"
"net"
"os"
"runtime"
"strconv"
"sync"

398
listener/tun/dev/dev_windows_extra.go
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@ -1,398 +0,0 @@
//go:build windows
// +build windows
package dev
import (
"bytes"
"errors"
"fmt"
"net"
"sort"
"sync"
"sync/atomic"
"time"
"github.com/Dreamacro/clash/listener/tun/dev/wintun"
"github.com/Dreamacro/clash/log"
"golang.org/x/sys/windows"
"golang.zx2c4.com/wireguard/windows/tunnel/winipcfg"
)
const messageTransportHeaderSize = 0 // size of data preceding content in transport message
type tunWindows struct {
wt *wintun.Adapter
handle windows.Handle
close int32
running sync.WaitGroup
forcedMTU int
rate rateJuggler
session wintun.Session
readWait windows.Handle
closeOnce sync.Once
url string
name string
tunAddress string
autoRoute bool
}
// OpenTunDevice return a TunDevice according a URL
func OpenTunDevice(tunAddress string, autoRoute bool) (TunDevice, error) {
requestedGUID, err := windows.GUIDFromString("{330EAEF8-7578-5DF2-D97B-8DADC0EA85CB}")
if err == nil {
WintunStaticRequestedGUID = &requestedGUID
log.Debugln("Generate GUID: %s", WintunStaticRequestedGUID.String())
} else {
log.Warnln("Error parese GUID from string: %v", err)
}
interfaceName := "Meta Tunnel"
mtu := 9000
tun, err := CreateTUN(interfaceName, mtu, tunAddress, autoRoute)
if err != nil {
return nil, err
}
return tun, nil
}
//
// CreateTUN creates a Wintun interface with the given name. Should a Wintun
// interface with the same name exist, it is reused.
//
func CreateTUN(ifname string, mtu int, tunAddress string, autoRoute bool) (TunDevice, error) {
return CreateTUNWithRequestedGUID(ifname, WintunStaticRequestedGUID, mtu, tunAddress, autoRoute)
}
//
// CreateTUNWithRequestedGUID creates a Wintun interface with the given name and
// a requested GUID. Should a Wintun interface with the same name exist, it is reused.
//
func CreateTUNWithRequestedGUID(ifname string, requestedGUID *windows.GUID, mtu int, tunAddress string, autoRoute bool) (TunDevice, error) {
wt, err := wintun.CreateAdapter(ifname, WintunTunnelType, requestedGUID)
if err != nil {
return nil, fmt.Errorf("Error creating interface: %w", err)
}
forcedMTU := 1420
if mtu > 0 {
forcedMTU = mtu
}
tun := &tunWindows{
name: ifname,
wt: wt,
handle: windows.InvalidHandle,
forcedMTU: forcedMTU,
tunAddress: tunAddress,
autoRoute: autoRoute,
}
// config tun ip
err = tun.configureInterface()
if err != nil {
tun.wt.Close()
return nil, fmt.Errorf("error configure interface: %w", err)
}
tun.session, err = wt.StartSession(0x800000) // Ring capacity, 8 MiB
if err != nil {
tun.wt.Close()
return nil, fmt.Errorf("error starting session: %w", err)
}
tun.readWait = tun.session.ReadWaitEvent()
return tun, nil
}
func (tun *tunWindows) Name() string {
return tun.name
}
func (tun *tunWindows) IsClose() bool {
return atomic.LoadInt32(&tun.close) == 1
}
func (tun *tunWindows) Read(buff []byte) (int, error) {
return tun.Read0(buff, messageTransportHeaderSize)
}
func (tun *tunWindows) Write(buff []byte) (int, error) {
return tun.Write0(buff, messageTransportHeaderSize)
}
func (tun *tunWindows) URL() string {
return fmt.Sprintf("dev://%s", tun.Name())
}
func (tun *tunWindows) configureInterface() error {
retryOnFailure := wintun.StartedAtBoot()
tryTimes := 0
startOver:
var err error
if tryTimes > 0 {
log.Infoln("Retrying interface configuration after failure because system just booted (T+%v): %v", windows.DurationSinceBoot(), err)
time.Sleep(time.Second)
retryOnFailure = retryOnFailure && tryTimes < 15
}
tryTimes++
luid := winipcfg.LUID(tun.LUID())
log.Infoln("[wintun]: tun adapter LUID: %d", luid)
mtu, err := tun.MTU()
if err != nil {
return errors.New("unable to get device mtu")
}
family := winipcfg.AddressFamily(windows.AF_INET)
familyV6 := winipcfg.AddressFamily(windows.AF_INET6)
tunAddress := wintun.ParseIPCidr(tun.tunAddress + "/16")
addresses := []net.IPNet{tunAddress.IPNet()}
err = luid.FlushIPAddresses(familyV6)
if err == windows.ERROR_NOT_FOUND && retryOnFailure {
goto startOver
} else if err != nil {
return err
}
err = luid.FlushDNS(family)
if err == windows.ERROR_NOT_FOUND && retryOnFailure {
goto startOver
} else if err != nil {
return err
}
err = luid.FlushDNS(familyV6)
if err == windows.ERROR_NOT_FOUND && retryOnFailure {
goto startOver
} else if err != nil {
return err
}
err = luid.FlushRoutes(familyV6)
if err == windows.ERROR_NOT_FOUND && retryOnFailure {
goto startOver
} else if err != nil {
return err
}
foundDefault4 := false
foundDefault6 := false
if tun.autoRoute {
allowedIPs := []*wintun.IPCidr{
//wintun.ParseIPCidr("0.0.0.0/0"),
wintun.ParseIPCidr("1.0.0.0/8"),
wintun.ParseIPCidr("2.0.0.0/7"),
wintun.ParseIPCidr("4.0.0.0/6"),
wintun.ParseIPCidr("8.0.0.0/5"),
wintun.ParseIPCidr("16.0.0.0/4"),
wintun.ParseIPCidr("32.0.0.0/3"),
wintun.ParseIPCidr("64.0.0.0/2"),
wintun.ParseIPCidr("128.0.0.0/1"),
wintun.ParseIPCidr("224.0.0.0/4"),
wintun.ParseIPCidr("255.255.255.255/32"),
}
estimatedRouteCount := len(allowedIPs)
routes := make([]winipcfg.RouteData, 0, estimatedRouteCount)
var haveV4Address, haveV6Address bool = true, false
for _, allowedip := range allowedIPs {
allowedip.MaskSelf()
if (allowedip.Bits() == 32 && !haveV4Address) || (allowedip.Bits() == 128 && !haveV6Address) {
continue
}
route := winipcfg.RouteData{
Destination: allowedip.IPNet(),
Metric: 0,
}
if allowedip.Bits() == 32 {
if allowedip.Cidr == 0 {
foundDefault4 = true
}
route.NextHop = net.IPv4zero
} else if allowedip.Bits() == 128 {
if allowedip.Cidr == 0 {
foundDefault6 = true
}
route.NextHop = net.IPv6zero
}
routes = append(routes, route)
}
deduplicatedRoutes := make([]*winipcfg.RouteData, 0, len(routes))
sort.Slice(routes, func(i, j int) bool {
if routes[i].Metric != routes[j].Metric {
return routes[i].Metric < routes[j].Metric
}
if c := bytes.Compare(routes[i].NextHop, routes[j].NextHop); c != 0 {
return c < 0
}
if c := bytes.Compare(routes[i].Destination.IP, routes[j].Destination.IP); c != 0 {
return c < 0
}
if c := bytes.Compare(routes[i].Destination.Mask, routes[j].Destination.Mask); c != 0 {
return c < 0
}
return false
})
for i := 0; i < len(routes); i++ {
if i > 0 && routes[i].Metric == routes[i-1].Metric &&
bytes.Equal(routes[i].NextHop, routes[i-1].NextHop) &&
bytes.Equal(routes[i].Destination.IP, routes[i-1].Destination.IP) &&
bytes.Equal(routes[i].Destination.Mask, routes[i-1].Destination.Mask) {
continue
}
deduplicatedRoutes = append(deduplicatedRoutes, &routes[i])
}
err = luid.SetRoutesForFamily(family, deduplicatedRoutes)
if err == windows.ERROR_NOT_FOUND && retryOnFailure {
goto startOver
} else if err != nil {
return fmt.Errorf("unable to set routes: %w", err)
}
}
err = luid.SetIPAddressesForFamily(family, addresses)
if err == windows.ERROR_OBJECT_ALREADY_EXISTS {
cleanupAddressesOnDisconnectedInterfaces(family, addresses)
err = luid.SetIPAddressesForFamily(family, addresses)
}
if err == windows.ERROR_NOT_FOUND && retryOnFailure {
goto startOver
} else if err != nil {
return fmt.Errorf("unable to set ips: %w", err)
}
var ipif *winipcfg.MibIPInterfaceRow
ipif, err = luid.IPInterface(family)
if err != nil {
return err
}
ipif.RouterDiscoveryBehavior = winipcfg.RouterDiscoveryDisabled
ipif.DadTransmits = 0
ipif.ManagedAddressConfigurationSupported = false
ipif.OtherStatefulConfigurationSupported = false
if mtu > 0 {
ipif.NLMTU = uint32(mtu)
}
if (family == windows.AF_INET && foundDefault4) || (family == windows.AF_INET6 && foundDefault6) {
ipif.UseAutomaticMetric = false
ipif.Metric = 0
}
err = ipif.Set()
if err == windows.ERROR_NOT_FOUND && retryOnFailure {
goto startOver
} else if err != nil {
return fmt.Errorf("unable to set metric and MTU: %w", err)
}
var ipif6 *winipcfg.MibIPInterfaceRow
ipif6, err = luid.IPInterface(familyV6)
if err != nil {
return err
}
ipif6.RouterDiscoveryBehavior = winipcfg.RouterDiscoveryDisabled
ipif6.DadTransmits = 0
ipif6.ManagedAddressConfigurationSupported = false
ipif6.OtherStatefulConfigurationSupported = false
err = ipif6.Set()
if err == windows.ERROR_NOT_FOUND && retryOnFailure {
goto startOver
} else if err != nil {
return fmt.Errorf("unable to set v6 metric and MTU: %w", err)
}
err = luid.SetDNS(family, []net.IP{net.ParseIP("198.18.0.2")}, nil)
if err == windows.ERROR_NOT_FOUND && retryOnFailure {
goto startOver
} else if err != nil {
return fmt.Errorf("unable to set DNS %s %s: %w", "198.18.0.2", "nil", err)
}
return nil
}
func cleanupAddressesOnDisconnectedInterfaces(family winipcfg.AddressFamily, addresses []net.IPNet) {
if len(addresses) == 0 {
return
}
addrToStr := func(ip *net.IP) string {
if ip4 := ip.To4(); ip4 != nil {
return string(ip4)
}
return string(*ip)
}
addrHash := make(map[string]bool, len(addresses))
for i := range addresses {
addrHash[addrToStr(&addresses[i].IP)] = true
}
interfaces, err := winipcfg.GetAdaptersAddresses(family, winipcfg.GAAFlagDefault)
if err != nil {
return
}
for _, iface := range interfaces {
if iface.OperStatus == winipcfg.IfOperStatusUp {
continue
}
for address := iface.FirstUnicastAddress; address != nil; address = address.Next {
ip := address.Address.IP()
if addrHash[addrToStr(&ip)] {
ipnet := net.IPNet{IP: ip, Mask: net.CIDRMask(int(address.OnLinkPrefixLength), 8*len(ip))}
log.Infoln("Cleaning up stale address %s from interface ‘%s’", ipnet.String(), iface.FriendlyName())
iface.LUID.DeleteIPAddress(ipnet)
}
}
}
}
// GetAutoDetectInterface get ethernet interface
func GetAutoDetectInterface() (string, error) {
ifname, err := getAutoDetectInterfaceByFamily(winipcfg.AddressFamily(windows.AF_INET))
if err == nil {
return ifname, err
}
return getAutoDetectInterfaceByFamily(winipcfg.AddressFamily(windows.AF_INET6))
}
func getAutoDetectInterfaceByFamily(family winipcfg.AddressFamily) (string, error) {
interfaces, err := winipcfg.GetAdaptersAddresses(family, winipcfg.GAAFlagIncludeGateways)
if err != nil {
return "", fmt.Errorf("get ethernet interface failure. %w", err)
}
for _, iface := range interfaces {
if iface.OperStatus != winipcfg.IfOperStatusUp {
continue
}
ifname := iface.FriendlyName()
if ifname == "Clash" {
continue
}
for gatewayAddress := iface.FirstGatewayAddress; gatewayAddress != nil; gatewayAddress = gatewayAddress.Next {
nextHop := gatewayAddress.Address.IP()
var ipnet net.IPNet
if family == windows.AF_INET {
ipnet = net.IPNet{IP: net.IPv4zero, Mask: net.CIDRMask(0, 32)}
} else {
ipnet = net.IPNet{IP: net.IPv6zero, Mask: net.CIDRMask(0, 128)}
}
if _, err = iface.LUID.Route(ipnet, nextHop); err == nil {
return ifname, nil
}
}
}
return "", errors.New("ethernet interface not found")
}

41
listener/tun/dev/wintun/boot.go
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@ -1,41 +0,0 @@
//go:build windows
// +build windows
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
*/
package wintun
import (
"errors"
"log"
"sync"
"time"
"golang.org/x/sys/windows"
"golang.org/x/sys/windows/svc"
)
var (
startedAtBoot bool
startedAtBootOnce sync.Once
)
func StartedAtBoot() bool {
startedAtBootOnce.Do(func() {
if isService, err := svc.IsWindowsService(); err == nil && !isService {
return
}
if reason, err := svc.DynamicStartReason(); err == nil {
startedAtBoot = (reason&svc.StartReasonAuto) != 0 || (reason&svc.StartReasonDelayedAuto) != 0
} else if errors.Is(err, windows.ERROR_PROC_NOT_FOUND) {
// TODO: Below this line is Windows 7 compatibility code, which hopefully we can delete at some point.
startedAtBoot = windows.DurationSinceBoot() < time.Minute*10
} else {
log.Printf("Unable to determine service start reason: %v", err)
}
})
return startedAtBoot
}

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listener/tun/dev/wintun/embed_dll/amd64/wintun.dll
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listener/tun/dev/wintun/embed_dll/arm/wintun.dll
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listener/tun/dev/wintun/embed_dll/arm64/wintun.dll
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21
listener/tun/dev/wintun/embed_dll/windows_386.go
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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

21
listener/tun/dev/wintun/embed_dll/windows_amd64.go
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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 amd64/wintun.dll
var DDlContent []byte

21
listener/tun/dev/wintun/embed_dll/windows_arm.go
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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 arm/wintun.dll
var DDlContent []byte

21
listener/tun/dev/wintun/embed_dll/windows_arm64.go
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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 arm64/wintun.dll
var DDlContent []byte

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listener/tun/dev/wintun/embed_dll/x86/wintun.dll
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2
listener/tun/tun_adapter.go
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@ -53,7 +53,7 @@ func New(tunConf *config.Tun, tunAddressPrefix string, tcpIn chan<- C.ConnContex
if err != nil {
for i := 1; i < 3; i++ {
time.Sleep(time.Second * 1)
device, err = dev.OpenTunDevice(tunAddress, autoRoute)
tunDevice, err = parseDevice(devName, uint32(mtu))
if err == nil {
break
}