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package listeners // import "github.com/docker/docker/daemon/listeners"
import (
"crypto/tls"
"fmt"
"net"
"strings"
winio "github.com/Microsoft/go-winio"
"github.com/docker/go-connections/sockets"
)
// Init creates new listeners for the server.
func Init(proto, addr, socketGroup string, tlsConfig *tls.Config) ([]net.Listener, error) {
ls := []net.Listener{}
switch proto {
case "tcp":
l, err := sockets.NewTCPSocket(addr, tlsConfig)
if err != nil {
return nil, err
}
ls = append(ls, l)
case "npipe":
// allow Administrators and SYSTEM, plus whatever additional users or groups were specified
sddl := "D:P(A;;GA;;;BA)(A;;GA;;;SY)"
if socketGroup != "" {
for _, g := range strings.Split(socketGroup, ",") {
sid, err := winio.LookupSidByName(g)
if err != nil {
return nil, err
}
sddl += fmt.Sprintf("(A;;GRGW;;;%s)", sid)
}
}
c := winio.PipeConfig{
SecurityDescriptor: sddl,
MessageMode: true, // Use message mode so that CloseWrite() is supported
InputBufferSize: 65536, // Use 64KB buffers to improve performance
OutputBufferSize: 65536,
}
l, err := winio.ListenPipe(addr, &c)
if err != nil {
return nil, err
}
ls = append(ls, l)
default:
return nil, fmt.Errorf("invalid protocol format: windows only supports tcp and npipe")
}
return ls, nil
}
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