package wireguard import ( "context" "net" "net/netip" "os" "github.com/sagernet/sing-box/adapter" "github.com/sagernet/sing-box/common/dialer" "github.com/sagernet/sing-box/option" "github.com/sagernet/sing-tun" M "github.com/sagernet/sing/common/metadata" N "github.com/sagernet/sing/common/network" wgTun "golang.zx2c4.com/wireguard/tun" ) var _ Device = (*SystemDevice)(nil) type SystemDevice struct { dialer N.Dialer device tun.Tun name string mtu int events chan wgTun.Event } /*func (w *SystemDevice) NewEndpoint() (stack.LinkEndpoint, error) { gTun, isGTun := w.device.(tun.GVisorTun) if !isGTun { return nil, tun.ErrGVisorUnsupported } return gTun.NewEndpoint() }*/ func NewSystemDevice(router adapter.Router, interfaceName string, localPrefixes []netip.Prefix, mtu uint32) (*SystemDevice, error) { var inet4Addresses []netip.Prefix var inet6Addresses []netip.Prefix for _, prefixes := range localPrefixes { if prefixes.Addr().Is4() { inet4Addresses = append(inet4Addresses, prefixes) } else { inet6Addresses = append(inet6Addresses, prefixes) } } if interfaceName == "" { interfaceName = tun.CalculateInterfaceName("wg") } tunInterface, err := tun.Open(tun.Options{ Name: interfaceName, Inet4Address: inet4Addresses, Inet6Address: inet6Addresses, MTU: mtu, }) if err != nil { return nil, err } return &SystemDevice{ dialer.NewDefault(router, option.DialerOptions{ BindInterface: interfaceName, }), tunInterface, interfaceName, int(mtu), make(chan wgTun.Event), }, nil } func (w *SystemDevice) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) { return w.dialer.DialContext(ctx, network, destination) } func (w *SystemDevice) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) { return w.dialer.ListenPacket(ctx, destination) } func (w *SystemDevice) Start() error { w.events <- wgTun.EventUp return nil } func (w *SystemDevice) File() *os.File { return nil } func (w *SystemDevice) Read(bytes []byte, index int) (int, error) { return w.device.Read(bytes[index-tunPacketOffset:]) } func (w *SystemDevice) Write(bytes []byte, index int) (int, error) { return w.device.Write(bytes[index:]) } func (w *SystemDevice) Flush() error { return nil } func (w *SystemDevice) MTU() (int, error) { return w.mtu, nil } func (w *SystemDevice) Name() (string, error) { return w.name, nil } func (w *SystemDevice) Events() chan wgTun.Event { return w.events } func (w *SystemDevice) Close() error { select { case <-w.events: return os.ErrClosed default: close(w.events) } return w.device.Close() }