mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-11-22 08:31:30 +00:00
117 lines
2.6 KiB
Go
117 lines
2.6 KiB
Go
package wireguard
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import (
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"context"
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"net"
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"net/netip"
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"os"
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"github.com/sagernet/sing-box/adapter"
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"github.com/sagernet/sing-box/common/dialer"
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"github.com/sagernet/sing-box/option"
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"github.com/sagernet/sing-tun"
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M "github.com/sagernet/sing/common/metadata"
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N "github.com/sagernet/sing/common/network"
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wgTun "golang.zx2c4.com/wireguard/tun"
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)
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var _ Device = (*SystemDevice)(nil)
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type SystemDevice struct {
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dialer N.Dialer
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device tun.Tun
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name string
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mtu int
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events chan wgTun.Event
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}
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/*func (w *SystemDevice) NewEndpoint() (stack.LinkEndpoint, error) {
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gTun, isGTun := w.device.(tun.GVisorTun)
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if !isGTun {
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return nil, tun.ErrGVisorUnsupported
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}
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return gTun.NewEndpoint()
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}*/
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func NewSystemDevice(router adapter.Router, interfaceName string, localPrefixes []netip.Prefix, mtu uint32) (*SystemDevice, error) {
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var inet4Addresses []netip.Prefix
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var inet6Addresses []netip.Prefix
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for _, prefixes := range localPrefixes {
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if prefixes.Addr().Is4() {
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inet4Addresses = append(inet4Addresses, prefixes)
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} else {
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inet6Addresses = append(inet6Addresses, prefixes)
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}
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}
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if interfaceName == "" {
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interfaceName = tun.CalculateInterfaceName("wg")
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}
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tunInterface, err := tun.Open(tun.Options{
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Name: interfaceName,
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Inet4Address: inet4Addresses,
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Inet6Address: inet6Addresses,
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MTU: mtu,
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})
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if err != nil {
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return nil, err
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}
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return &SystemDevice{
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dialer.NewDefault(router, option.DialerOptions{
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BindInterface: interfaceName,
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}),
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tunInterface, interfaceName, int(mtu), make(chan wgTun.Event),
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}, nil
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}
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func (w *SystemDevice) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
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return w.dialer.DialContext(ctx, network, destination)
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}
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func (w *SystemDevice) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
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return w.dialer.ListenPacket(ctx, destination)
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}
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func (w *SystemDevice) Start() error {
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w.events <- wgTun.EventUp
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return nil
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}
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func (w *SystemDevice) File() *os.File {
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return nil
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}
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func (w *SystemDevice) Read(bytes []byte, index int) (int, error) {
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return w.device.Read(bytes[index-tunPacketOffset:])
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}
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func (w *SystemDevice) Write(bytes []byte, index int) (int, error) {
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return w.device.Write(bytes[index:])
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}
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func (w *SystemDevice) Flush() error {
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return nil
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}
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func (w *SystemDevice) MTU() (int, error) {
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return w.mtu, nil
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}
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func (w *SystemDevice) Name() (string, error) {
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return w.name, nil
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}
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func (w *SystemDevice) Events() chan wgTun.Event {
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return w.events
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}
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func (w *SystemDevice) Close() error {
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select {
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case <-w.events:
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return os.ErrClosed
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default:
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close(w.events)
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}
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return w.device.Close()
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}
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