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package dhcpv6
import (
"fmt"
"github.com/u-root/uio/uio"
)
// OptIATA implements the identity association for non-temporary addresses
// option.
//
// This module defines the OptIATA structure.
// https://www.ietf.org/rfc/rfc8415.txt
type OptIATA struct {
IaId [4]byte
Options IdentityOptions
}
// Code returns the option code for an IA_TA
func (op *OptIATA) Code() OptionCode {
return OptionIATA
}
// ToBytes serializes IATA to DHCPv6 bytes.
func (op *OptIATA) ToBytes() []byte {
buf := uio.NewBigEndianBuffer(nil)
buf.WriteBytes(op.IaId[:])
buf.WriteBytes(op.Options.ToBytes())
return buf.Data()
}
func (op *OptIATA) String() string {
return fmt.Sprintf("IATA: {IAID=%v, options=%v}",
op.IaId, op.Options)
}
// ParseOptIATA builds an OptIATA structure from a sequence of bytes. The
// input data does not include option code and length bytes.
func ParseOptIATA(data []byte) (*OptIATA, error) {
var opt OptIATA
buf := uio.NewBigEndianBuffer(data)
buf.ReadBytes(opt.IaId[:])
if err := opt.Options.FromBytes(buf.ReadAll()); err != nil {
return nil, err
}
return &opt, buf.FinError()
}
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