Add call protocol, Rmux. Update AmneziaWG. Fixes and improvements

protocol/call/inbound.go

@@ -0,0 +1,122 @@
+package call
+
+import (
+	"context"
+	"net"
+
+	"github.com/sagernet/sing-box/adapter"
+	"github.com/sagernet/sing-box/adapter/inbound"
+	"github.com/sagernet/sing-box/common/dialer"
+	C "github.com/sagernet/sing-box/constant"
+	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/option"
+	"github.com/sagernet/sing-box/transport/call"
+	"github.com/sagernet/sing/common/bufio"
+	"github.com/sagernet/sing/common/bufio/deadline"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/logger"
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+	"github.com/sagernet/sing/service"
+)
+
+func RegisterInbound(registry *inbound.Registry) {
+	inbound.Register[option.CallInboundOptions](registry, C.TypeCall, NewInbound)
+}
+
+type Inbound struct {
+	inbound.Adapter
+	ctx     context.Context
+	router  adapter.ConnectionRouterEx
+	logger  logger.ContextLogger
+	options option.CallInboundOptions
+	dialer  N.Dialer
+	bridge  *call.Bridge
+}
+
+func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.CallInboundOptions) (adapter.Inbound, error) {
+	if options.Platform == "" {
+		return nil, E.New("missing platform")
+	}
+	outboundDialer, err := dialer.New(ctx, options.DialerOptions, true)
+	if err != nil {
+		return nil, err
+	}
+	return &Inbound{
+		Adapter: inbound.NewAdapter(C.TypeCall, tag),
+		ctx:     ctx,
+		router:  router,
+		logger:  logger,
+		options: options,
+		dialer:  outboundDialer,
+	}, nil
+}
+
+func (h *Inbound) Start(stage adapter.StartStage) error {
+	if stage != adapter.StartStatePostStart {
+		return nil
+	}
+	go h.run()
+	return nil
+}
+
+func (h *Inbound) Close() error {
+	if h.bridge == nil {
+		return nil
+	}
+	return h.bridge.Close()
+}
+
+func (h *Inbound) run() {
+	dnsRouter := service.FromContext[adapter.DNSRouter](h.ctx)
+	bridge, err := call.Connect(h.ctx, call.Config{
+		Platform:     h.options.Platform,
+		Mode:         h.options.Mode,
+		JoinLink:     h.options.JoinLink,
+		CookieString: h.options.Cookies.Header(),
+		Email:        h.options.Email,
+		Password:     h.options.Password,
+		ReadBuffer:   h.options.ReadBuffer,
+		Role:         call.RoleCreator,
+		Dialer:       h.dialer,
+		DNSRouter:    dnsRouter,
+		Logger:       h.logger,
+	})
+	if err != nil {
+		h.logger.ErrorContext(h.ctx, err)
+		return
+	}
+	h.bridge = bridge
+	bridge.SetAcceptHandler(func(conn net.Conn, destination string) {
+		h.handleConnection(conn, M.ParseSocksaddr(destination))
+	})
+	bridge.SetUDPAcceptHandler(func(conn net.Conn, destination string) {
+		h.handlePacketConnection(bufio.NewUnbindPacketConnWithAddr(conn, M.ParseSocksaddr(destination)), M.ParseSocksaddr(destination))
+	})
+}
+
+func (h *Inbound) handleConnection(conn net.Conn, destination M.Socksaddr) {
+	ctx := log.ContextWithNewID(h.ctx)
+	var metadata adapter.InboundContext
+	metadata.Inbound = h.Tag()
+	metadata.InboundType = h.Type()
+	metadata.Source = M.Socksaddr{}
+	metadata.Destination = destination
+	h.logger.InfoContext(ctx, "inbound connection to ", destination)
+	h.router.RouteConnectionEx(ctx, deadline.NewConn(conn), metadata, N.OnceClose(func(it error) {
+		conn.Close()
+	}))
+}
+
+func (h *Inbound) handlePacketConnection(conn N.PacketConn, destination M.Socksaddr) {
+	ctx := log.ContextWithNewID(h.ctx)
+	var metadata adapter.InboundContext
+	metadata.Inbound = h.Tag()
+	metadata.InboundType = h.Type()
+	metadata.Source = M.Socksaddr{}
+	metadata.Destination = destination
+	h.logger.InfoContext(ctx, "inbound packet connection to ", destination)
+	h.router.RoutePacketConnectionEx(ctx, conn, metadata, N.OnceClose(func(it error) {
+		conn.Close()
+	}))
+}