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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))
// We don't support sockaddr_mpls for now.
p.Header.Addrs &= RTA_DST | RTA_GATEWAY | RTA_NETMASK | RTA_GENMASK | RTA_IFA | RTA_IFP | RTA_BRD | RTA_AUTHOR
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_IFANNOUNCE:
p := (*InterfaceAnnounceMessage)(unsafe.Pointer(any))
return &InterfaceAnnounceMessage{Header: p.Header}
case RTM_NEWADDR, RTM_DELADDR:
p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
return &InterfaceAddrMessage{Header: p.Header, Data: b[SizeofIfaMsghdr:any.Msglen]}
case RTM_NEWMADDR, RTM_DELMADDR:
p := (*InterfaceMulticastAddrMessage)(unsafe.Pointer(any))
return &InterfaceMulticastAddrMessage{Header: p.Header, Data: b[SizeofIfmaMsghdr:any.Msglen]}
}
return nil
}
// InterfaceAnnounceMessage represents a routing message containing
// network interface arrival and departure information.
//
// Deprecated: Use golang.org/x/net/route instead.
type InterfaceAnnounceMessage struct {
Header IfAnnounceMsghdr
}
func (m *InterfaceAnnounceMessage) sockaddr() ([]Sockaddr, error) { return nil, nil }
// InterfaceMulticastAddrMessage represents a routing message
// containing network interface address entries.
//
// Deprecated: Use golang.org/x/net/route instead.
type InterfaceMulticastAddrMessage struct {
Header IfmaMsghdr
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
}