mirror of https://github.com/EasyDarwin/EasyDarwin
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
1.8 KiB
62 lines
1.8 KiB
// 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 unix
|
|
|
|
import "unsafe"
|
|
|
|
func (any *anyMessage) toRoutingMessage(b []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))
|
|
return &RouteMessage{Header: p.Header, Data: b[SizeofRtMsghdr:any.Msglen]}
|
|
case RTM_IFINFO:
|
|
p := (*InterfaceMessage)(unsafe.Pointer(any))
|
|
return &InterfaceMessage{Header: p.Header, Data: b[SizeofIfMsghdr:any.Msglen]}
|
|
case RTM_NEWADDR, RTM_DELADDR:
|
|
p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
|
|
return &InterfaceAddrMessage{Header: p.Header, Data: b[SizeofIfaMsghdr:any.Msglen]}
|
|
case RTM_NEWMADDR2, RTM_DELMADDR:
|
|
p := (*InterfaceMulticastAddrMessage)(unsafe.Pointer(any))
|
|
return &InterfaceMulticastAddrMessage{Header: p.Header, Data: b[SizeofIfmaMsghdr2:any.Msglen]}
|
|
}
|
|
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
|
|
}
|
|
b := m.Data[:]
|
|
for i := uint(0); i < RTAX_MAX; i++ {
|
|
if m.Header.Addrs&rtaIfmaMask&(1<<i) == 0 {
|
|
continue
|
|
}
|
|
rsa := (*RawSockaddr)(unsafe.Pointer(&b[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
|
|
}
|
|
b = b[rsaAlignOf(int(rsa.Len)):]
|
|
}
|
|
return sas
|
|
}
|