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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, as defined by RFC 8415 Section
// 21.5.
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("%s: {IAID=%#x, Options=%v}", op.Code(), op.IaId, op.Options)
}
// LongString returns a multi-line string representation of IATA data.
func (op *OptIATA) LongString(indentSpace int) string {
return fmt.Sprintf("%s: IAID=%#x Options=%v", op.Code(), op.IaId, op.Options.LongString(indentSpace))
}
// FromBytes builds an OptIATA structure from a sequence of bytes. The input
// data does not include option code and length bytes.
func (op *OptIATA) FromBytes(data []byte) error {
buf := uio.NewBigEndianBuffer(data)
buf.ReadBytes(op.IaId[:])
if err := op.Options.FromBytes(buf.ReadAll()); err != nil {
return err
}
return buf.FinError()
}
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