mirror of
https://github.com/SagerNet/sing-box.git
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refactor: Modular inbounds/outbounds
This commit is contained in:
世界
parent
9f7683818f
commit
e233fd4fe5
152 changed files with 3116 additions and 2926 deletions
65
protocol/redirect/redirect.go
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65
protocol/redirect/redirect.go
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@ -0,0 +1,65 @@
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package redirect
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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/adapter/inbound"
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"github.com/sagernet/sing-box/common/listener"
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"github.com/sagernet/sing-box/common/redir"
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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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M "github.com/sagernet/sing/common/metadata"
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N "github.com/sagernet/sing/common/network"
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)
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func RegisterRedirect(registry *inbound.Registry) {
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inbound.Register[option.RedirectInboundOptions](registry, C.TypeRedirect, NewRedirect)
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}
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type Redirect struct {
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inbound.Adapter
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router adapter.Router
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logger log.ContextLogger
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listener *listener.Listener
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}
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func NewRedirect(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.RedirectInboundOptions) (adapter.Inbound, error) {
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redirect := &Redirect{
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Adapter: inbound.NewAdapter(C.TypeRedirect, tag),
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router: router,
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logger: logger,
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}
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redirect.listener = listener.New(listener.Options{
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Context: ctx,
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Logger: logger,
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Network: []string{N.NetworkTCP},
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Listen: options.ListenOptions,
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ConnectionHandler: redirect,
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})
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return redirect, nil
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}
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func (h *Redirect) Start() error {
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return h.listener.Start()
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}
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func (h *Redirect) Close() error {
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return h.listener.Close()
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}
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func (h *Redirect) NewConnectionEx(ctx context.Context, conn net.Conn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
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destination, err := redir.GetOriginalDestination(conn)
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if err != nil {
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conn.Close()
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h.logger.ErrorContext(ctx, "process connection from ", conn.RemoteAddr(), ": get redirect destination: ", err)
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return
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}
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metadata.Inbound = h.Tag()
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metadata.InboundType = h.Type()
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metadata.Destination = M.SocksaddrFromNetIP(destination)
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h.logger.InfoContext(ctx, "inbound connection to ", metadata.Destination)
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h.router.RouteConnectionEx(ctx, conn, metadata, onClose)
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}
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158
protocol/redirect/tproxy.go
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158
protocol/redirect/tproxy.go
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@ -0,0 +1,158 @@
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package redirect
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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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"syscall"
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"time"
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"github.com/sagernet/sing-box/adapter"
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"github.com/sagernet/sing-box/adapter/inbound"
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"github.com/sagernet/sing-box/common/listener"
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"github.com/sagernet/sing-box/common/redir"
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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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"github.com/sagernet/sing/common"
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"github.com/sagernet/sing/common/buf"
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"github.com/sagernet/sing/common/control"
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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/udpnat2"
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)
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func RegisterTProxy(registry *inbound.Registry) {
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inbound.Register[option.TProxyInboundOptions](registry, C.TypeTProxy, NewTProxy)
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}
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type TProxy struct {
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inbound.Adapter
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ctx context.Context
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router adapter.Router
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logger log.ContextLogger
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listener *listener.Listener
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udpNat *udpnat.Service
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}
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func NewTProxy(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.TProxyInboundOptions) (adapter.Inbound, error) {
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tproxy := &TProxy{
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Adapter: inbound.NewAdapter(C.TypeTProxy, tag),
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ctx: ctx,
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router: router,
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logger: logger,
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}
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var udpTimeout time.Duration
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if options.UDPTimeout != 0 {
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udpTimeout = time.Duration(options.UDPTimeout)
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} else {
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udpTimeout = C.UDPTimeout
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}
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tproxy.udpNat = udpnat.New(tproxy, tproxy.preparePacketConnection, udpTimeout, false)
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tproxy.listener = listener.New(listener.Options{
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Context: ctx,
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Logger: logger,
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Network: options.Network.Build(),
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Listen: options.ListenOptions,
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ConnectionHandler: tproxy,
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OOBPacketHandler: tproxy,
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})
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return tproxy, nil
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}
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func (t *TProxy) Start() error {
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err := t.listener.Start()
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if err != nil {
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return err
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}
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if listener := t.listener.TCPListener(); listener != nil {
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err = control.Conn(common.MustCast[syscall.Conn](listener), func(fd uintptr) error {
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return redir.TProxy(fd, M.SocksaddrFromNet(listener.Addr()).Addr.Is6())
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})
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if err != nil {
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return E.Cause(err, "configure tproxy TCP listener")
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}
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}
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if conn := t.listener.UDPConn(); conn != nil {
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err = control.Conn(conn, func(fd uintptr) error {
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return redir.TProxy(fd, M.SocksaddrFromNet(conn.LocalAddr()).Addr.Is6())
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})
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if err != nil {
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return E.Cause(err, "configure tproxy UDP listener")
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}
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}
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return nil
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}
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func (t *TProxy) Close() error {
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return t.listener.Close()
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}
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func (t *TProxy) NewConnectionEx(ctx context.Context, conn net.Conn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
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metadata.Destination = M.SocksaddrFromNet(conn.LocalAddr()).Unwrap()
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t.logger.InfoContext(ctx, "inbound connection to ", metadata.Destination)
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t.router.RouteConnectionEx(ctx, conn, metadata, onClose)
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}
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func (t *TProxy) NewPacketConnectionEx(ctx context.Context, conn N.PacketConn, source M.Socksaddr, destination M.Socksaddr, onClose N.CloseHandlerFunc) {
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t.logger.InfoContext(ctx, "inbound packet connection from ", source)
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t.logger.InfoContext(ctx, "inbound packet connection to ", destination)
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var metadata adapter.InboundContext
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metadata.Inbound = t.Tag()
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metadata.InboundType = t.Type()
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metadata.Source = source
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metadata.Destination = destination
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metadata.OriginDestination = t.listener.UDPAddr()
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t.router.RoutePacketConnectionEx(ctx, conn, metadata, onClose)
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}
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func (t *TProxy) NewPacketEx(buffer *buf.Buffer, oob []byte, source M.Socksaddr) {
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destination, err := redir.GetOriginalDestinationFromOOB(oob)
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if err != nil {
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t.logger.Warn("process packet from ", source, ": get tproxy destination: ", err)
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return
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}
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t.udpNat.NewPacket([][]byte{buffer.Bytes()}, source, M.SocksaddrFromNetIP(destination), nil)
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}
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type tproxyPacketWriter struct {
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ctx context.Context
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source netip.AddrPort
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destination M.Socksaddr
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conn *net.UDPConn
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}
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func (t *TProxy) preparePacketConnection(source M.Socksaddr, destination M.Socksaddr, userData any) (bool, context.Context, N.PacketWriter, N.CloseHandlerFunc) {
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ctx := log.ContextWithNewID(t.ctx)
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writer := &tproxyPacketWriter{ctx: ctx, source: source.AddrPort(), destination: destination}
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return true, ctx, writer, func(it error) {
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common.Close(common.PtrOrNil(writer.conn))
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}
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}
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func (w *tproxyPacketWriter) WritePacket(buffer *buf.Buffer, destination M.Socksaddr) error {
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defer buffer.Release()
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conn := w.conn
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if w.destination == destination && conn != nil {
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_, err := conn.WriteToUDPAddrPort(buffer.Bytes(), w.source)
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if err != nil {
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w.conn = nil
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}
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return err
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}
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var listener net.ListenConfig
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listener.Control = control.Append(listener.Control, control.ReuseAddr())
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listener.Control = control.Append(listener.Control, redir.TProxyWriteBack())
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packetConn, err := listener.ListenPacket(w.ctx, "udp", destination.String())
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if err != nil {
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return err
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}
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udpConn := packetConn.(*net.UDPConn)
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if w.destination == destination {
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w.conn = udpConn
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} else {
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defer udpConn.Close()
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}
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return common.Error(udpConn.WriteToUDPAddrPort(buffer.Bytes(), w.source))
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}
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