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Export interface for WireGuard

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世界 2024-11-21 18:12:21 +08:00
parent 8a18f0c99e
commit 4ebeb2fa86
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GPG key ID: CD109927C34A63C4
11 changed files with 269 additions and 49 deletions
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29
tun_darwin.go
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@ -3,6 +3,7 @@ package tun
import (
"errors"
"fmt"
"github.com/sagernet/sing-tun/internal/gtcpip/header"
"net"
"net/netip"
"os"
@ -96,9 +97,10 @@ var (
func (t *NativeTun) WriteVectorised(buffers []*buf.Buffer) error {
var packetHeader []byte
if buffers[0].Byte(0)>>4 == 4 {
switch header.IPVersion(buffers[0].Bytes()) {
case header.IPv4Version:
packetHeader = packetHeader4[:]
} else {
case header.IPv6Version:
packetHeader = packetHeader6[:]
}
return t.tunWriter.WriteVectorised(append([]*buf.Buffer{buf.As(packetHeader)}, buffers...))
@ -250,6 +252,7 @@ func configure(tunFd int, ifIndex int, name string, options Options) error {
func (t *NativeTun) setRoutes() error {
if t.options.AutoRoute && t.options.FileDescriptor == 0 {
routeRanges, err := t.options.BuildAutoRouteRanges(false)
if err != nil {
return err
@ -262,14 +265,22 @@ func (t *NativeTun) setRoutes() error {
} else {
gateway = gateway6
}
err = execRoute(unix.RTM_ADD, destination, gateway)
var interfaceIndex int
if t.options.InterfaceScope {
iff, err := t.options.InterfaceFinder.ByName(t.options.Name)
if err != nil {
return err
}
interfaceIndex = iff.Index
}
err = execRoute(unix.RTM_ADD, t.options.InterfaceScope, interfaceIndex, destination, gateway)
if err != nil {
if errors.Is(err, unix.EEXIST) {
err = execRoute(unix.RTM_DELETE, destination, gateway)
err = execRoute(unix.RTM_DELETE, false, 0, destination, gateway)
if err != nil {
return E.Cause(err, "remove existing route: ", destination)
}
err = execRoute(unix.RTM_ADD, destination, gateway)
err = execRoute(unix.RTM_ADD, t.options.InterfaceScope, interfaceIndex, destination, gateway)
if err != nil {
return E.Cause(err, "re-add route: ", destination)
}
@ -300,7 +311,7 @@ func (t *NativeTun) unsetRoutes() error {
} else {
gateway = gateway6
}
err = execRoute(unix.RTM_DELETE, destination, gateway)
err = execRoute(unix.RTM_DELETE, false, 0, destination, gateway)
if err != nil {
err = E.Errors(err, E.Cause(err, "delete route: ", destination))
}
@ -317,7 +328,7 @@ func useSocket(domain, typ, proto int, block func(socketFd int) error) error {
return block(socketFd)
}
func execRoute(rtmType int, destination netip.Prefix, gateway netip.Addr) error {
func execRoute(rtmType int, interfaceScope bool, interfaceIndex int, destination netip.Prefix, gateway netip.Addr) error {
routeMessage := route.RouteMessage{
Type: rtmType,
Version: unix.RTM_VERSION,
@ -326,6 +337,10 @@ func execRoute(rtmType int, destination netip.Prefix, gateway netip.Addr) error
}
if rtmType == unix.RTM_ADD {
routeMessage.Flags |= unix.RTF_UP
if interfaceScope {
routeMessage.Flags |= unix.RTF_IFSCOPE
routeMessage.Index = interfaceIndex
}
}
if gateway.Is4() {
routeMessage.Addrs = []route.Addr{