// Copyright 2016 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 route
func (*wireFormat) parseInterfaceMessage(_ RIBType, b []byte) (Message, error) {
if len(b) < 32 {
return nil, errMessageTooShort
}
l := int(nativeEndian.Uint16(b[:2]))
if len(b) < l {
return nil, errInvalidMessage
}
attrs := uint(nativeEndian.Uint32(b[12:16]))
if attrs&sysRTA_IFP == 0 {
return nil, nil
}
m := &InterfaceMessage{
Version: int(b[2]),
Type: int(b[3]),
Flags: int(nativeEndian.Uint32(b[16:20])),
Index: int(nativeEndian.Uint16(b[6:8])),
Addrs: make([]Addr, sysRTAX_MAX),
raw: b[:l],
}
ll := int(nativeEndian.Uint16(b[4:6]))
if len(b) < ll {
return nil, errInvalidMessage
}
a, err := parseLinkAddr(b[ll:])
if err != nil {
return nil, err
}
m.Addrs[sysRTAX_IFP] = a
m.Name = a.(*LinkAddr).Name
return m, nil
}
func (*wireFormat) parseInterfaceAddrMessage(_ RIBType, b []byte) (Message, error) {
if len(b) < 24 {
return nil, errMessageTooShort
}
l := int(nativeEndian.Uint16(b[:2]))
if len(b) < l {
return nil, errInvalidMessage
}
bodyOff := int(nativeEndian.Uint16(b[4:6]))
if len(b) < bodyOff {
return nil, errInvalidMessage
}
m := &InterfaceAddrMessage{
Version: int(b[2]),
Type: int(b[3]),
Flags: int(nativeEndian.Uint32(b[12:16])),
Index: int(nativeEndian.Uint16(b[6:8])),
raw: b[:l],
}
var err error
m.Addrs, err = parseAddrs(uint(nativeEndian.Uint32(b[12:16])), parseKernelInetAddr, b[bodyOff:])
if err != nil {
return nil, err
}
return m, nil
}
func (*wireFormat) parseInterfaceAnnounceMessage(_ RIBType, b []byte) (Message, error) {
if len(b) < 26 {
return nil, errMessageTooShort
}
l := int(nativeEndian.Uint16(b[:2]))
if len(b) < l {
return nil, errInvalidMessage
}
m := &InterfaceAnnounceMessage{
Version: int(b[2]),
Type: int(b[3]),
Index: int(nativeEndian.Uint16(b[6:8])),
What: int(nativeEndian.Uint16(b[8:10])),
raw: b[:l],
}
for i := 0; i < 16; i++ {
if b[10+i] != 0 {
continue
}
m.Name = string(b[10 : 10+i])
break
}
return m, nil
}