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// 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.
package syscall
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.
//
// Deprecated: Use golang.org/x/net/route instead.
type InterfaceMulticastAddrMessage struct {
Header IfmaMsghdr2
Data []byte
}
func (m *InterfaceMulticastAddrMessage) sockaddr() ([]Sockaddr, error) {
var sas [RTAX_MAX]Sockaddr
b := m.Data[:]
for i := uint(0); i < RTAX_MAX && len(b) >= minRoutingSockaddrLen; i++ {
if m.Header.Addrs&(1<<i) == 0 {
continue
}
rsa := (*RawSockaddr)(unsafe.Pointer(&b[0]))
switch rsa.Family {
case AF_LINK:
sa, err := parseSockaddrLink(b)
if err != nil {
return nil, err
}
sas[i] = sa
b = b[rsaAlignOf(int(rsa.Len)):]
case AF_INET, AF_INET6:
sa, err := parseSockaddrInet(b, rsa.Family)
if err != nil {
return nil, err
}
sas[i] = sa
b = b[rsaAlignOf(int(rsa.Len)):]
default:
sa, l, err := parseLinkLayerAddr(b)
if err != nil {
return nil, err
}
sas[i] = sa
b = b[l:]
}
}
return sas[:], nil
}
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