78 lines
2.0 KiB
Go
78 lines
2.0 KiB
Go
// Copyright 2011 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.
|
|
|
|
// Routing sockets and messages for Darwin
|
|
|
|
package syscall
|
|
|
|
import (
|
|
"unsafe"
|
|
)
|
|
|
|
func (any *anyMessage) toRoutingMessage(buf []byte) RoutingMessage {
|
|
switch any.Type {
|
|
case RTM_ADD, RTM_DELETE, RTM_CHANGE, RTM_GET, RTM_LOSING, RTM_REDIRECT, RTM_MISS, RTM_LOCK, RTM_RESOLVE:
|
|
p := (*RouteMessage)(unsafe.Pointer(any))
|
|
rtm := &RouteMessage{}
|
|
rtm.Header = p.Header
|
|
rtm.Data = buf[SizeofRtMsghdr:any.Msglen]
|
|
return rtm
|
|
case RTM_IFINFO:
|
|
p := (*InterfaceMessage)(unsafe.Pointer(any))
|
|
ifm := &InterfaceMessage{}
|
|
ifm.Header = p.Header
|
|
ifm.Data = buf[SizeofIfMsghdr:any.Msglen]
|
|
return ifm
|
|
case RTM_NEWADDR, RTM_DELADDR:
|
|
p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
|
|
ifam := &InterfaceAddrMessage{}
|
|
ifam.Header = p.Header
|
|
ifam.Data = buf[SizeofIfaMsghdr:any.Msglen]
|
|
return ifam
|
|
case RTM_NEWMADDR2, RTM_DELMADDR:
|
|
p := (*InterfaceMulticastAddrMessage)(unsafe.Pointer(any))
|
|
ifmam := &InterfaceMulticastAddrMessage{}
|
|
ifmam.Header = p.Header
|
|
ifmam.Data = buf[SizeofIfmaMsghdr2:any.Msglen]
|
|
return ifmam
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// InterfaceMulticastAddrMessage represents a routing message
|
|
// containing network interface address entries.
|
|
type InterfaceMulticastAddrMessage struct {
|
|
Header IfmaMsghdr2
|
|
Data []byte
|
|
}
|
|
|
|
const rtaIfmaMask = RTA_GATEWAY | RTA_IFP | RTA_IFA
|
|
|
|
func (m *InterfaceMulticastAddrMessage) sockaddr() (sas []Sockaddr) {
|
|
if m.Header.Addrs&rtaIfmaMask == 0 {
|
|
return nil
|
|
}
|
|
|
|
buf := m.Data[:]
|
|
for i := uint(0); i < RTAX_MAX; i++ {
|
|
if m.Header.Addrs&rtaIfmaMask&(1<<i) == 0 {
|
|
continue
|
|
}
|
|
rsa := (*RawSockaddr)(unsafe.Pointer(&buf[0]))
|
|
switch i {
|
|
case RTAX_IFA:
|
|
sa, e := anyToSockaddr((*RawSockaddrAny)(unsafe.Pointer(rsa)))
|
|
if e != nil {
|
|
return nil
|
|
}
|
|
sas = append(sas, sa)
|
|
case RTAX_GATEWAY, RTAX_IFP:
|
|
// nothing to do
|
|
}
|
|
buf = buf[rsaAlignOf(int(rsa.Len)):]
|
|
}
|
|
|
|
return sas
|
|
}
|