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package dhcpv6
import (
"fmt"
"net"
"github.com/insomniacslk/dhcp/iana"
"github.com/u-root/u-root/pkg/uio"
)
// OptClientLinkLayerAddress implements OptionClientLinkLayerAddr option.
// https://tools.ietf.org/html/rfc6939
func OptClientLinkLayerAddress(ht iana.HWType, lla net.HardwareAddr) *optClientLinkLayerAddress {
return &optClientLinkLayerAddress{LinkLayerType: ht, LinkLayerAddress: lla}
}
type optClientLinkLayerAddress struct {
LinkLayerType iana.HWType
LinkLayerAddress net.HardwareAddr
}
// Code returns the option code.
func (op *optClientLinkLayerAddress) Code() OptionCode {
return OptionClientLinkLayerAddr
}
// ToBytes serializes the option and returns it as a sequence of bytes
func (op *optClientLinkLayerAddress) ToBytes() []byte {
buf := uio.NewBigEndianBuffer(nil)
buf.Write16(uint16(op.LinkLayerType))
buf.WriteBytes(op.LinkLayerAddress)
return buf.Data()
}
func (op *optClientLinkLayerAddress) String() string {
return fmt.Sprintf("ClientLinkLayerAddress: Type=%s LinkLayerAddress=%s", op.LinkLayerType, op.LinkLayerAddress)
}
// parseOptClientLinkLayerAddress deserializes from bytes
// to build an optClientLinkLayerAddress structure.
func parseOptClientLinkLayerAddress(data []byte) (*optClientLinkLayerAddress, error) {
var opt optClientLinkLayerAddress
buf := uio.NewBigEndianBuffer(data)
opt.LinkLayerType = iana.HWType(buf.Read16())
opt.LinkLayerAddress = buf.ReadAll()
return &opt, buf.FinError()
}
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