70 lines
2.0 KiB
Go
70 lines
2.0 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package syscall
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import "unsafe"
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func (any *anyMessage) toRoutingMessage(b []byte) RoutingMessage {
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switch any.Type {
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case RTM_ADD, RTM_DELETE, RTM_CHANGE, RTM_GET, RTM_LOSING, RTM_REDIRECT, RTM_MISS, RTM_LOCK, RTM_RESOLVE:
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p := (*RouteMessage)(unsafe.Pointer(any))
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return &RouteMessage{Header: p.Header, Data: b[SizeofRtMsghdr:any.Msglen]}
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case RTM_IFINFO:
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p := (*InterfaceMessage)(unsafe.Pointer(any))
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return &InterfaceMessage{Header: p.Header, Data: b[SizeofIfMsghdr:any.Msglen]}
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case RTM_NEWADDR, RTM_DELADDR:
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p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
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return &InterfaceAddrMessage{Header: p.Header, Data: b[SizeofIfaMsghdr:any.Msglen]}
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case RTM_NEWMADDR2, RTM_DELMADDR:
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p := (*InterfaceMulticastAddrMessage)(unsafe.Pointer(any))
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return &InterfaceMulticastAddrMessage{Header: p.Header, Data: b[SizeofIfmaMsghdr2:any.Msglen]}
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}
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return nil
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}
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// InterfaceMulticastAddrMessage represents a routing message
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// containing network interface address entries.
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//
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// Deprecated: Use golang.org/x/net/route instead.
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type InterfaceMulticastAddrMessage struct {
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Header IfmaMsghdr2
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Data []byte
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}
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func (m *InterfaceMulticastAddrMessage) sockaddr() ([]Sockaddr, error) {
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var sas [RTAX_MAX]Sockaddr
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b := m.Data[:]
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for i := uint(0); i < RTAX_MAX && len(b) >= minRoutingSockaddrLen; i++ {
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if m.Header.Addrs&(1<<i) == 0 {
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continue
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}
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rsa := (*RawSockaddr)(unsafe.Pointer(&b[0]))
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switch rsa.Family {
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case AF_LINK:
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sa, err := parseSockaddrLink(b)
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if err != nil {
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return nil, err
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}
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sas[i] = sa
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b = b[rsaAlignOf(int(rsa.Len)):]
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case AF_INET, AF_INET6:
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sa, err := parseSockaddrInet(b, rsa.Family)
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if err != nil {
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return nil, err
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}
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sas[i] = sa
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b = b[rsaAlignOf(int(rsa.Len)):]
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default:
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sa, l, err := parseLinkLayerAddr(b)
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if err != nil {
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return nil, err
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}
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sas[i] = sa
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b = b[l:]
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}
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}
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return sas[:], nil
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}
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