sing-box/inbound/mixed.go

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package inbound
import (
std_bufio "bufio"
"context"
"net"
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"os"
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"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/common/uot"
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C "github.com/sagernet/sing-box/constant"
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
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"github.com/sagernet/sing/common/auth"
"github.com/sagernet/sing/common/buf"
"github.com/sagernet/sing/common/bufio"
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N "github.com/sagernet/sing/common/network"
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"github.com/sagernet/sing/common/rw"
"github.com/sagernet/sing/protocol/http"
"github.com/sagernet/sing/protocol/socks"
"github.com/sagernet/sing/protocol/socks/socks4"
"github.com/sagernet/sing/protocol/socks/socks5"
)
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var (
_ adapter.Inbound = (*Mixed)(nil)
_ adapter.InjectableInbound = (*Mixed)(nil)
)
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type Mixed struct {
myInboundAdapter
authenticator auth.Authenticator
}
func NewMixed(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.HTTPMixedInboundOptions) *Mixed {
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inbound := &Mixed{
myInboundAdapter{
protocol: C.TypeMixed,
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network: []string{N.NetworkTCP},
ctx: ctx,
router: uot.NewRouter(router, logger),
logger: logger,
tag: tag,
listenOptions: options.ListenOptions,
setSystemProxy: options.SetSystemProxy,
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},
auth.NewAuthenticator(options.Users),
}
inbound.connHandler = inbound
return inbound
}
func (h *Mixed) NewConnection(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) error {
headerType, err := rw.ReadByte(conn)
if err != nil {
return err
}
switch headerType {
case socks4.Version, socks5.Version:
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return socks.HandleConnection0(ctx, conn, headerType, h.authenticator, h.upstreamUserHandler(metadata), adapter.UpstreamMetadata(metadata))
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}
reader := std_bufio.NewReader(bufio.NewCachedReader(conn, buf.As([]byte{headerType})))
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return http.HandleConnection(ctx, conn, reader, h.authenticator, h.upstreamUserHandler(metadata), adapter.UpstreamMetadata(metadata))
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}
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func (h *Mixed) NewPacketConnection(ctx context.Context, conn N.PacketConn, metadata adapter.InboundContext) error {
return os.ErrInvalid
}