85 lines
2.6 KiB
Go
85 lines
2.6 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.
|
||
|
|
|
||
|
|
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
|
||
|
|
}
|