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package dhcpv6
import (
"fmt"
"github.com/u-root/u-root/pkg/uio"
)
// OptServerId represents a Server ID option
//
// This module defines the OptServerId and DUID structures.
// https://www.ietf.org/rfc/rfc3315.txt
type OptServerId struct {
Sid Duid
}
func (op *OptServerId) Code() OptionCode {
return OptionServerID
}
// ToBytes serializes this option.
func (op *OptServerId) ToBytes() []byte {
buf := uio.NewBigEndianBuffer(nil)
buf.Write16(uint16(OptionServerID))
buf.Write16(uint16(op.Length()))
buf.WriteBytes(op.Sid.ToBytes())
return buf.Data()
}
func (op *OptServerId) Length() int {
return op.Sid.Length()
}
func (op *OptServerId) String() string {
return fmt.Sprintf("OptServerId{sid=%v}", op.Sid.String())
}
// ParseOptServerId builds an OptServerId structure from a sequence of bytes.
// The input data does not include option code and length bytes.
func ParseOptServerId(data []byte) (*OptServerId, error) {
var opt OptServerId
sid, err := DuidFromBytes(data)
if err != nil {
return nil, err
}
opt.Sid = *sid
return &opt, nil
}
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