gtsocial-umbx

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transport_generic.go (907B)

      1 package dbus
      2 
      3 import (
      4 	"encoding/binary"
      5 	"errors"
      6 	"io"
      7 	"unsafe"
      8 )
      9 
     10 var nativeEndian binary.ByteOrder
     11 
     12 func detectEndianness() binary.ByteOrder {
     13 	var x uint32 = 0x01020304
     14 	if *(*byte)(unsafe.Pointer(&x)) == 0x01 {
     15 		return binary.BigEndian
     16 	}
     17 	return binary.LittleEndian
     18 }
     19 
     20 func init() {
     21 	nativeEndian = detectEndianness()
     22 }
     23 
     24 type genericTransport struct {
     25 	io.ReadWriteCloser
     26 }
     27 
     28 func (t genericTransport) SendNullByte() error {
     29 	_, err := t.Write([]byte{0})
     30 	return err
     31 }
     32 
     33 func (t genericTransport) SupportsUnixFDs() bool {
     34 	return false
     35 }
     36 
     37 func (t genericTransport) EnableUnixFDs() {}
     38 
     39 func (t genericTransport) ReadMessage() (*Message, error) {
     40 	return DecodeMessage(t)
     41 }
     42 
     43 func (t genericTransport) SendMessage(msg *Message) error {
     44 	for _, v := range msg.Body {
     45 		if _, ok := v.(UnixFD); ok {
     46 			return errors.New("dbus: unix fd passing not enabled")
     47 		}
     48 	}
     49 	return msg.EncodeTo(t, nativeEndian)
     50 }