mirror of
https://github.com/dutchcoders/transfer.sh.git
synced 2024-11-23 12:40:19 +01:00
cb6e5cb0c7
* use dep for vendoring * lets encrypt * moved web to transfer.sh-web repo * single command install * added first tests
37 lines
890 B
Go
37 lines
890 B
Go
// Copyright 2014 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// +build darwin linux solaris
|
|
|
|
package ipv4
|
|
|
|
import (
|
|
"syscall"
|
|
"unsafe"
|
|
|
|
"golang.org/x/net/internal/iana"
|
|
)
|
|
|
|
func marshalPacketInfo(b []byte, cm *ControlMessage) []byte {
|
|
m := (*syscall.Cmsghdr)(unsafe.Pointer(&b[0]))
|
|
m.Level = iana.ProtocolIP
|
|
m.Type = sysIP_PKTINFO
|
|
m.SetLen(syscall.CmsgLen(sizeofInetPktinfo))
|
|
if cm != nil {
|
|
pi := (*inetPktinfo)(unsafe.Pointer(&b[syscall.CmsgLen(0)]))
|
|
if ip := cm.Src.To4(); ip != nil {
|
|
copy(pi.Spec_dst[:], ip)
|
|
}
|
|
if cm.IfIndex > 0 {
|
|
pi.setIfindex(cm.IfIndex)
|
|
}
|
|
}
|
|
return b[syscall.CmsgSpace(sizeofInetPktinfo):]
|
|
}
|
|
|
|
func parsePacketInfo(cm *ControlMessage, b []byte) {
|
|
pi := (*inetPktinfo)(unsafe.Pointer(&b[0]))
|
|
cm.IfIndex = int(pi.Ifindex)
|
|
cm.Dst = pi.Addr[:]
|
|
}
|