mirror of
https://github.com/shtorm-7/sing-box-extended.git
synced 2026-06-26 12:23:12 +03:00
131 lines
3.8 KiB
Go
131 lines
3.8 KiB
Go
package snell
|
|
|
|
import (
|
|
"context"
|
|
"net"
|
|
|
|
"github.com/sagernet/sing-box/adapter"
|
|
"github.com/sagernet/sing-box/adapter/inbound"
|
|
"github.com/sagernet/sing-box/common/listener"
|
|
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/snell"
|
|
"github.com/sagernet/sing/common"
|
|
"github.com/sagernet/sing/common/bufio"
|
|
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"
|
|
)
|
|
|
|
func RegisterInbound(registry *inbound.Registry) {
|
|
inbound.Register[option.SnellInboundOptions](registry, C.TypeSnell, NewInbound)
|
|
}
|
|
|
|
type Inbound struct {
|
|
inbound.Adapter
|
|
router adapter.ConnectionRouterEx
|
|
logger logger.ContextLogger
|
|
listener *listener.Listener
|
|
service *snell.Service
|
|
}
|
|
|
|
func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.SnellInboundOptions) (adapter.Inbound, error) {
|
|
if options.PSK == "" {
|
|
return nil, E.New("snell requires psk")
|
|
}
|
|
udpEnabled := common.Contains(options.Network.Build(), N.NetworkUDP)
|
|
obfsMode := ""
|
|
if options.Obfs != nil {
|
|
obfsMode = options.Obfs.Mode
|
|
}
|
|
in := &Inbound{
|
|
Adapter: inbound.NewAdapter(C.TypeSnell, tag),
|
|
router: router,
|
|
logger: logger,
|
|
}
|
|
service, err := snell.NewService(snell.ServiceOptions{
|
|
PSK: []byte(options.PSK),
|
|
Version: options.Version,
|
|
ObfsMode: obfsMode,
|
|
UDP: udpEnabled,
|
|
Logger: logger,
|
|
Handler: (*inboundHandler)(in),
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
in.service = service
|
|
in.listener = listener.New(listener.Options{
|
|
Context: ctx,
|
|
Logger: logger,
|
|
Network: []string{N.NetworkTCP},
|
|
Listen: options.ListenOptions,
|
|
ConnectionHandler: in,
|
|
})
|
|
return in, nil
|
|
}
|
|
|
|
func (h *Inbound) Start(stage adapter.StartStage) error {
|
|
if stage != adapter.StartStateStart {
|
|
return nil
|
|
}
|
|
return h.listener.Start()
|
|
}
|
|
|
|
func (h *Inbound) Close() error {
|
|
return h.listener.Close()
|
|
}
|
|
|
|
func (h *Inbound) NewConnectionEx(ctx context.Context, conn net.Conn, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
|
|
err := h.service.NewConnection(ctx, conn, metadata.Source)
|
|
N.CloseOnHandshakeFailure(conn, onClose, err)
|
|
if err != nil {
|
|
h.logger.ErrorContext(ctx, E.Cause(err, "process connection from ", metadata.Source))
|
|
}
|
|
}
|
|
|
|
var _ adapter.TCPInjectableInbound = (*Inbound)(nil)
|
|
|
|
type inboundHandler Inbound
|
|
|
|
func (h *inboundHandler) NewConnection(ctx context.Context, conn net.Conn, source M.Socksaddr, destination M.Socksaddr, clientID string) {
|
|
var metadata adapter.InboundContext
|
|
metadata.Inbound = h.Tag()
|
|
metadata.InboundType = h.Type()
|
|
metadata.InboundDetour = h.listener.ListenOptions().Detour
|
|
metadata.Source = source
|
|
metadata.Destination = destination
|
|
if clientID != "" {
|
|
metadata.User = clientID
|
|
h.logger.InfoContext(ctx, "[", clientID, "] inbound connection to ", destination)
|
|
} else {
|
|
h.logger.InfoContext(ctx, "inbound connection to ", destination)
|
|
}
|
|
done := make(chan struct{})
|
|
h.router.RouteConnectionEx(ctx, conn, metadata, N.OnceClose(func(error) {
|
|
close(done)
|
|
}))
|
|
<-done
|
|
}
|
|
|
|
func (h *inboundHandler) NewPacketConnection(ctx context.Context, conn net.PacketConn, source M.Socksaddr, clientID string) {
|
|
var metadata adapter.InboundContext
|
|
metadata.Inbound = h.Tag()
|
|
metadata.InboundType = h.Type()
|
|
metadata.InboundDetour = h.listener.ListenOptions().Detour
|
|
metadata.Source = source
|
|
if clientID != "" {
|
|
metadata.User = clientID
|
|
h.logger.InfoContext(ctx, "[", clientID, "] inbound packet connection")
|
|
} else {
|
|
h.logger.InfoContext(ctx, "inbound packet connection")
|
|
}
|
|
done := make(chan struct{})
|
|
h.router.RoutePacketConnectionEx(ctx, bufio.NewPacketConn(conn), metadata, N.OnceClose(func(error) {
|
|
close(done)
|
|
}))
|
|
<-done
|
|
}
|