mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-12-02 11:26:36 +00:00
87 lines
3.1 KiB
Go
87 lines
3.1 KiB
Go
package uot
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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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"github.com/sagernet/sing-box/adapter"
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E "github.com/sagernet/sing/common/exceptions"
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"github.com/sagernet/sing/common/logger"
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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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)
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var _ adapter.ConnectionRouterEx = (*Router)(nil)
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type Router struct {
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router adapter.ConnectionRouterEx
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logger logger.ContextLogger
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}
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func NewRouter(router adapter.ConnectionRouterEx, logger logger.ContextLogger) *Router {
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return &Router{router, logger}
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}
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func (r *Router) RouteConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
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switch metadata.Destination.Fqdn {
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case uot.MagicAddress:
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request, err := uot.ReadRequest(conn)
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if err != nil {
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return E.Cause(err, "read UoT request")
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}
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if request.IsConnect {
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r.logger.InfoContext(ctx, "inbound UoT connect connection to ", request.Destination)
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} else {
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r.logger.InfoContext(ctx, "inbound UoT connection to ", request.Destination)
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}
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metadata.Domain = metadata.Destination.Fqdn
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metadata.Destination = request.Destination
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return r.router.RoutePacketConnection(ctx, uot.NewConn(conn, *request), metadata)
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case uot.LegacyMagicAddress:
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r.logger.InfoContext(ctx, "inbound legacy UoT connection")
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metadata.Domain = metadata.Destination.Fqdn
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metadata.Destination = M.Socksaddr{Addr: netip.IPv4Unspecified()}
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return r.RoutePacketConnection(ctx, uot.NewConn(conn, uot.Request{}), metadata)
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}
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return r.router.RouteConnection(ctx, conn, metadata)
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}
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func (r *Router) RoutePacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
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return r.router.RoutePacketConnection(ctx, conn, metadata)
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}
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func (r *Router) RouteConnectionEx(ctx context.Context, conn net.Conn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
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switch metadata.Destination.Fqdn {
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case uot.MagicAddress:
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request, err := uot.ReadRequest(conn)
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if err != nil {
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err = E.Cause(err, "UoT read request")
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r.logger.ErrorContext(ctx, "process connection from ", metadata.Source, ": ", err)
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N.CloseOnHandshakeFailure(conn, onClose, err)
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return
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}
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if request.IsConnect {
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r.logger.InfoContext(ctx, "inbound UoT connect connection to ", request.Destination)
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} else {
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r.logger.InfoContext(ctx, "inbound UoT connection to ", request.Destination)
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}
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metadata.Domain = metadata.Destination.Fqdn
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metadata.Destination = request.Destination
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r.router.RoutePacketConnectionEx(ctx, uot.NewConn(conn, *request), metadata, onClose)
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return
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case uot.LegacyMagicAddress:
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r.logger.InfoContext(ctx, "inbound legacy UoT connection")
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metadata.Domain = metadata.Destination.Fqdn
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metadata.Destination = M.Socksaddr{Addr: netip.IPv4Unspecified()}
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r.RoutePacketConnectionEx(ctx, uot.NewConn(conn, uot.Request{}), metadata, onClose)
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return
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}
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r.router.RouteConnectionEx(ctx, conn, metadata, onClose)
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}
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func (r *Router) RoutePacketConnectionEx(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
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r.router.RoutePacketConnectionEx(ctx, conn, metadata, onClose)
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}
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