mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-09-20 02:27:50 +00:00
113 lines
3.3 KiB
Go
113 lines
3.3 KiB
Go
package outbound
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import (
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"context"
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"net"
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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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C "github.com/sagernet/sing-box/constant"
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"github.com/sagernet/sing-box/log"
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"github.com/sagernet/sing-box/option"
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E "github.com/sagernet/sing/common/exceptions"
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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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"github.com/sagernet/sing/common/uot"
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"github.com/sagernet/sing/protocol/socks"
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)
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var _ adapter.Outbound = (*Socks)(nil)
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type Socks struct {
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myOutboundAdapter
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client *socks.Client
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resolve bool
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uot bool
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}
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func NewSocks(router adapter.Router, logger log.ContextLogger, tag string, options option.SocksOutboundOptions) (*Socks, error) {
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detour := dialer.New(router, options.DialerOptions)
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var version socks.Version
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var err error
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if options.Version != "" {
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version, err = socks.ParseVersion(options.Version)
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} else {
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version = socks.Version5
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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 &Socks{
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myOutboundAdapter{
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protocol: C.TypeSocks,
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network: options.Network.Build(),
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router: router,
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logger: logger,
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tag: tag,
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},
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socks.NewClient(detour, options.ServerOptions.Build(), version, options.Username, options.Password),
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version == socks.Version4,
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options.UoT,
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}, nil
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}
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func (h *Socks) DialContext(ctx context.Context, network string, destination M.Socksaddr) (net.Conn, error) {
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ctx, metadata := adapter.AppendContext(ctx)
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metadata.Outbound = h.tag
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metadata.Destination = destination
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switch N.NetworkName(network) {
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case N.NetworkTCP:
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h.logger.InfoContext(ctx, "outbound connection to ", destination)
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case N.NetworkUDP:
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if h.uot {
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h.logger.InfoContext(ctx, "outbound UoT packet connection to ", destination)
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tcpConn, err := h.client.DialContext(ctx, N.NetworkTCP, M.Socksaddr{
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Fqdn: uot.UOTMagicAddress,
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Port: destination.Port,
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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 uot.NewClientConn(tcpConn), nil
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}
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h.logger.InfoContext(ctx, "outbound packet connection to ", destination)
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default:
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return nil, E.Extend(N.ErrUnknownNetwork, network)
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}
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if h.resolve && destination.IsFqdn() {
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addrs, err := h.router.LookupDefault(ctx, destination.Fqdn)
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if err != nil {
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return nil, err
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}
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return N.DialSerial(ctx, h.client, network, destination, addrs)
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}
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return h.client.DialContext(ctx, network, destination)
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}
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func (h *Socks) ListenPacket(ctx context.Context, destination M.Socksaddr) (net.PacketConn, error) {
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ctx, metadata := adapter.AppendContext(ctx)
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metadata.Outbound = h.tag
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metadata.Destination = destination
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if h.uot {
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h.logger.InfoContext(ctx, "outbound UoT packet connection to ", destination)
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tcpConn, err := h.client.DialContext(ctx, N.NetworkTCP, M.Socksaddr{
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Fqdn: uot.UOTMagicAddress,
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Port: destination.Port,
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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 uot.NewClientConn(tcpConn), nil
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}
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h.logger.InfoContext(ctx, "outbound packet connection to ", destination)
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return h.client.ListenPacket(ctx, destination)
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}
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func (h *Socks) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
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return NewConnection(ctx, h, conn, metadata)
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}
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func (h *Socks) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
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return NewPacketConnection(ctx, h, conn, metadata)
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}
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