mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-11-30 04:21:29 +00:00
115 lines
4.5 KiB
Go
115 lines
4.5 KiB
Go
package inbound
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import (
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"context"
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"net"
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"time"
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"github.com/sagernet/sing-box/adapter"
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"github.com/sagernet/sing-box/common/mux"
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"github.com/sagernet/sing-box/common/uot"
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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-shadowsocks"
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"github.com/sagernet/sing-shadowsocks/shadowaead"
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"github.com/sagernet/sing-shadowsocks/shadowaead_2022"
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"github.com/sagernet/sing/common"
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"github.com/sagernet/sing/common/buf"
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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/ntp"
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)
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func NewShadowsocks(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.ShadowsocksInboundOptions) (adapter.Inbound, error) {
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if len(options.Users) > 0 && len(options.Destinations) > 0 {
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return nil, E.New("users and destinations options must not be combined")
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}
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if len(options.Users) > 0 {
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return newShadowsocksMulti(ctx, router, logger, tag, options)
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} else if len(options.Destinations) > 0 {
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return newShadowsocksRelay(ctx, router, logger, tag, options)
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} else {
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return newShadowsocks(ctx, router, logger, tag, options)
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}
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}
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var (
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_ adapter.Inbound = (*Shadowsocks)(nil)
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_ adapter.TCPInjectableInbound = (*Shadowsocks)(nil)
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)
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type Shadowsocks struct {
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myInboundAdapter
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service shadowsocks.Service
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}
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func newShadowsocks(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.ShadowsocksInboundOptions) (*Shadowsocks, error) {
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inbound := &Shadowsocks{
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myInboundAdapter: myInboundAdapter{
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protocol: C.TypeShadowsocks,
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network: options.Network.Build(),
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ctx: ctx,
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router: uot.NewRouter(router, logger),
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logger: logger,
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tag: tag,
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listenOptions: options.ListenOptions,
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},
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}
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inbound.connHandler = inbound
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inbound.packetHandler = inbound
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var err error
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inbound.router, err = mux.NewRouterWithOptions(inbound.router, logger, common.PtrValueOrDefault(options.Multiplex))
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if err != nil {
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return nil, err
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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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switch {
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case options.Method == shadowsocks.MethodNone:
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inbound.service = shadowsocks.NewNoneService(int64(udpTimeout.Seconds()), adapter.NewUpstreamHandler(adapter.InboundContext{}, inbound.newConnection, inbound.newPacketConnection, inbound))
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case common.Contains(shadowaead.List, options.Method):
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inbound.service, err = shadowaead.NewService(options.Method, nil, options.Password, int64(udpTimeout.Seconds()), adapter.NewUpstreamHandler(adapter.InboundContext{}, inbound.newConnection, inbound.newPacketConnection, inbound))
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case common.Contains(shadowaead_2022.List, options.Method):
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inbound.service, err = shadowaead_2022.NewServiceWithPassword(options.Method, options.Password, int64(udpTimeout.Seconds()), adapter.NewUpstreamHandler(adapter.InboundContext{}, inbound.newConnection, inbound.newPacketConnection, inbound), ntp.TimeFuncFromContext(ctx))
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default:
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err = E.New("unsupported method: ", options.Method)
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}
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inbound.packetUpstream = inbound.service
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return inbound, err
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}
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func (h *Shadowsocks) NewConnectionEx(ctx context.Context, conn net.Conn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
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err := h.service.NewConnection(ctx, conn, adapter.UpstreamMetadata(metadata))
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N.CloseOnHandshakeFailure(conn, onClose, err)
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if err != nil {
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h.logger.ErrorContext(ctx, E.Cause(err, "process connection from ", metadata.Source))
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}
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}
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func (h *Shadowsocks) NewPacketEx(buffer *buf.Buffer, source M.Socksaddr) {
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err := h.service.NewPacket(h.ctx, h.packetConn(), buffer, M.Metadata{Source: source})
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if err != nil {
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h.logger.Error(E.Cause(err, "process packet from ", source))
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}
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}
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func (h *Shadowsocks) newConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
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h.logger.InfoContext(ctx, "inbound connection to ", metadata.Destination)
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return h.router.RouteConnection(ctx, conn, h.createMetadata(conn, metadata))
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}
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func (h *Shadowsocks) newPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
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ctx = log.ContextWithNewID(ctx)
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h.logger.InfoContext(ctx, "inbound packet connection from ", metadata.Source)
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h.logger.InfoContext(ctx, "inbound packet connection to ", metadata.Destination)
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return h.router.RoutePacketConnection(ctx, conn, h.createPacketMetadata(conn, metadata))
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}
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