mirror of
https://github.com/MetaCubeX/mihomo.git
synced 2024-07-16 01:18:11 +00:00
269 lines
7.7 KiB
Go
269 lines
7.7 KiB
Go
package outbound
|
|
|
|
import (
|
|
"context"
|
|
"encoding/base64"
|
|
"encoding/hex"
|
|
"errors"
|
|
"fmt"
|
|
"net"
|
|
"net/netip"
|
|
"runtime"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
|
|
CN "github.com/Dreamacro/clash/common/net"
|
|
"github.com/Dreamacro/clash/component/dialer"
|
|
"github.com/Dreamacro/clash/component/resolver"
|
|
C "github.com/Dreamacro/clash/constant"
|
|
"github.com/Dreamacro/clash/log"
|
|
|
|
wireguard "github.com/metacubex/sing-wireguard"
|
|
|
|
"github.com/sagernet/sing/common"
|
|
"github.com/sagernet/sing/common/debug"
|
|
E "github.com/sagernet/sing/common/exceptions"
|
|
M "github.com/sagernet/sing/common/metadata"
|
|
N "github.com/sagernet/sing/common/network"
|
|
"github.com/sagernet/wireguard-go/device"
|
|
)
|
|
|
|
type WireGuard struct {
|
|
*Base
|
|
bind *wireguard.ClientBind
|
|
device *device.Device
|
|
tunDevice wireguard.Device
|
|
dialer *wgSingDialer
|
|
startOnce sync.Once
|
|
startErr error
|
|
}
|
|
|
|
type WireGuardOption struct {
|
|
BasicOption
|
|
Name string `proxy:"name"`
|
|
Server string `proxy:"server"`
|
|
Port int `proxy:"port"`
|
|
Ip string `proxy:"ip,omitempty"`
|
|
Ipv6 string `proxy:"ipv6,omitempty"`
|
|
PrivateKey string `proxy:"private-key"`
|
|
PublicKey string `proxy:"public-key"`
|
|
PreSharedKey string `proxy:"pre-shared-key,omitempty"`
|
|
Reserved []uint8 `proxy:"reserved,omitempty"`
|
|
Workers int `proxy:"workers,omitempty"`
|
|
MTU int `proxy:"mtu,omitempty"`
|
|
UDP bool `proxy:"udp,omitempty"`
|
|
PersistentKeepalive int `proxy:"persistent-keepalive,omitempty"`
|
|
}
|
|
|
|
type wgSingDialer struct {
|
|
dialer dialer.Dialer
|
|
}
|
|
|
|
var _ N.Dialer = &wgSingDialer{}
|
|
|
|
func (d *wgSingDialer) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
|
|
return d.dialer.DialContext(ctx, network, destination.String())
|
|
}
|
|
|
|
func (d *wgSingDialer) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
|
|
return d.dialer.ListenPacket(ctx, "udp", "", destination.AddrPort())
|
|
}
|
|
|
|
type wgNetDialer struct {
|
|
tunDevice wireguard.Device
|
|
}
|
|
|
|
var _ dialer.NetDialer = &wgNetDialer{}
|
|
|
|
func (d wgNetDialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
|
|
return d.tunDevice.DialContext(ctx, network, M.ParseSocksaddr(address))
|
|
}
|
|
|
|
func NewWireGuard(option WireGuardOption) (*WireGuard, error) {
|
|
outbound := &WireGuard{
|
|
Base: &Base{
|
|
name: option.Name,
|
|
addr: net.JoinHostPort(option.Server, strconv.Itoa(option.Port)),
|
|
tp: C.WireGuard,
|
|
udp: option.UDP,
|
|
iface: option.Interface,
|
|
rmark: option.RoutingMark,
|
|
prefer: C.NewDNSPrefer(option.IPVersion),
|
|
},
|
|
dialer: &wgSingDialer{dialer: dialer.NewDialer()},
|
|
}
|
|
runtime.SetFinalizer(outbound, closeWireGuard)
|
|
|
|
var reserved [3]uint8
|
|
if len(option.Reserved) > 0 {
|
|
if len(option.Reserved) != 3 {
|
|
return nil, E.New("invalid reserved value, required 3 bytes, got ", len(option.Reserved))
|
|
}
|
|
reserved[0] = uint8(option.Reserved[0])
|
|
reserved[1] = uint8(option.Reserved[1])
|
|
reserved[2] = uint8(option.Reserved[2])
|
|
}
|
|
peerAddr := M.ParseSocksaddrHostPort(option.Server, uint16(option.Port))
|
|
outbound.bind = wireguard.NewClientBind(context.Background(), outbound.dialer, peerAddr, reserved)
|
|
localPrefixes := make([]netip.Prefix, 0, 2)
|
|
if len(option.Ip) > 0 {
|
|
if !strings.Contains(option.Ip, "/") {
|
|
option.Ip = option.Ip + "/32"
|
|
}
|
|
if prefix, err := netip.ParsePrefix(option.Ip); err == nil {
|
|
localPrefixes = append(localPrefixes, prefix)
|
|
} else {
|
|
return nil, E.Cause(err, "ip address parse error")
|
|
}
|
|
}
|
|
if len(option.Ipv6) > 0 {
|
|
if !strings.Contains(option.Ipv6, "/") {
|
|
option.Ipv6 = option.Ipv6 + "/128"
|
|
}
|
|
if prefix, err := netip.ParsePrefix(option.Ipv6); err == nil {
|
|
localPrefixes = append(localPrefixes, prefix)
|
|
} else {
|
|
return nil, E.Cause(err, "ipv6 address parse error")
|
|
}
|
|
}
|
|
if len(localPrefixes) == 0 {
|
|
return nil, E.New("missing local address")
|
|
}
|
|
var privateKey, peerPublicKey, preSharedKey string
|
|
{
|
|
bytes, err := base64.StdEncoding.DecodeString(option.PrivateKey)
|
|
if err != nil {
|
|
return nil, E.Cause(err, "decode private key")
|
|
}
|
|
privateKey = hex.EncodeToString(bytes)
|
|
}
|
|
{
|
|
bytes, err := base64.StdEncoding.DecodeString(option.PublicKey)
|
|
if err != nil {
|
|
return nil, E.Cause(err, "decode peer public key")
|
|
}
|
|
peerPublicKey = hex.EncodeToString(bytes)
|
|
}
|
|
if option.PreSharedKey != "" {
|
|
bytes, err := base64.StdEncoding.DecodeString(option.PreSharedKey)
|
|
if err != nil {
|
|
return nil, E.Cause(err, "decode pre shared key")
|
|
}
|
|
preSharedKey = hex.EncodeToString(bytes)
|
|
}
|
|
ipcConf := "private_key=" + privateKey
|
|
ipcConf += "\npublic_key=" + peerPublicKey
|
|
ipcConf += "\nendpoint=" + peerAddr.String()
|
|
if preSharedKey != "" {
|
|
ipcConf += "\npreshared_key=" + preSharedKey
|
|
}
|
|
var has4, has6 bool
|
|
for _, address := range localPrefixes {
|
|
if address.Addr().Is4() {
|
|
has4 = true
|
|
} else {
|
|
has6 = true
|
|
}
|
|
}
|
|
if has4 {
|
|
ipcConf += "\nallowed_ip=0.0.0.0/0"
|
|
}
|
|
if has6 {
|
|
ipcConf += "\nallowed_ip=::/0"
|
|
}
|
|
if option.PersistentKeepalive != 0 {
|
|
ipcConf += fmt.Sprintf("\npersistent_keepalive_interval=%d", option.PersistentKeepalive)
|
|
}
|
|
mtu := option.MTU
|
|
if mtu == 0 {
|
|
mtu = 1408
|
|
}
|
|
var err error
|
|
outbound.tunDevice, err = wireguard.NewStackDevice(localPrefixes, uint32(mtu))
|
|
if err != nil {
|
|
return nil, E.Cause(err, "create WireGuard device")
|
|
}
|
|
outbound.device = device.NewDevice(outbound.tunDevice, outbound.bind, &device.Logger{
|
|
Verbosef: func(format string, args ...interface{}) {
|
|
log.SingLogger.Debug(fmt.Sprintf(strings.ToLower(format), args...))
|
|
},
|
|
Errorf: func(format string, args ...interface{}) {
|
|
log.SingLogger.Error(fmt.Sprintf(strings.ToLower(format), args...))
|
|
},
|
|
}, option.Workers)
|
|
if debug.Enabled {
|
|
log.SingLogger.Trace("created wireguard ipc conf: \n", ipcConf)
|
|
}
|
|
err = outbound.device.IpcSet(ipcConf)
|
|
if err != nil {
|
|
return nil, E.Cause(err, "setup wireguard")
|
|
}
|
|
//err = outbound.tunDevice.Start()
|
|
return outbound, nil
|
|
}
|
|
|
|
func closeWireGuard(w *WireGuard) {
|
|
if w.device != nil {
|
|
w.device.Close()
|
|
}
|
|
_ = common.Close(w.tunDevice)
|
|
}
|
|
|
|
func (w *WireGuard) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.Conn, err error) {
|
|
options := w.Base.DialOptions(opts...)
|
|
w.dialer.dialer = dialer.NewDialer(options...)
|
|
var conn net.Conn
|
|
w.startOnce.Do(func() {
|
|
w.startErr = w.tunDevice.Start()
|
|
})
|
|
if w.startErr != nil {
|
|
return nil, w.startErr
|
|
}
|
|
if !metadata.Resolved() {
|
|
options = append(options, dialer.WithNetDialer(wgNetDialer{tunDevice: w.tunDevice}))
|
|
conn, err = dialer.NewDialer(options...).DialContext(ctx, "tcp", metadata.RemoteAddress())
|
|
} else {
|
|
port, _ := strconv.Atoi(metadata.DstPort)
|
|
conn, err = w.tunDevice.DialContext(ctx, "tcp", M.SocksaddrFrom(metadata.DstIP, uint16(port)))
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if conn == nil {
|
|
return nil, E.New("conn is nil")
|
|
}
|
|
return NewConn(CN.NewRefConn(conn, w), w), nil
|
|
}
|
|
|
|
func (w *WireGuard) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (_ C.PacketConn, err error) {
|
|
options := w.Base.DialOptions(opts...)
|
|
w.dialer.dialer = dialer.NewDialer(options...)
|
|
var pc net.PacketConn
|
|
w.startOnce.Do(func() {
|
|
w.startErr = w.tunDevice.Start()
|
|
})
|
|
if w.startErr != nil {
|
|
return nil, w.startErr
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if !metadata.Resolved() {
|
|
ip, err := resolver.ResolveIP(ctx, metadata.Host)
|
|
if err != nil {
|
|
return nil, errors.New("can't resolve ip")
|
|
}
|
|
metadata.DstIP = ip
|
|
}
|
|
port, _ := strconv.Atoi(metadata.DstPort)
|
|
pc, err = w.tunDevice.ListenPacket(ctx, M.SocksaddrFrom(metadata.DstIP, uint16(port)))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if pc == nil {
|
|
return nil, E.New("packetConn is nil")
|
|
}
|
|
return newPacketConn(CN.NewRefPacketConn(pc, w), w), nil
|
|
}
|