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package dhcpv6
import (
"fmt"
"strings"
"github.com/insomniacslk/dhcp/iana"
"github.com/u-root/u-root/pkg/uio"
)
// OptClientArchType represents an option CLIENT_ARCH_TYPE
//
// This module defines the OptClientArchType structure.
// https://www.ietf.org/rfc/rfc5970.txt
type OptClientArchType struct {
ArchTypes []iana.Arch
}
func (op *OptClientArchType) Code() OptionCode {
return OptionClientArchType
}
// ToBytes marshals the client arch type as defined by RFC 5970.
func (op *OptClientArchType) ToBytes() []byte {
buf := uio.NewBigEndianBuffer(nil)
for _, at := range op.ArchTypes {
buf.Write16(uint16(at))
}
return buf.Data()
}
func (op *OptClientArchType) String() string {
atStrings := make([]string, 0)
for _, at := range op.ArchTypes {
atStrings = append(atStrings, at.String())
}
return fmt.Sprintf("OptClientArchType{archtype=%v}", strings.Join(atStrings, ", "))
}
// ParseOptClientArchType builds an OptClientArchType structure from
// a sequence of bytes The input data does not include option code and
// length bytes.
func ParseOptClientArchType(data []byte) (*OptClientArchType, error) {
var opt OptClientArchType
buf := uio.NewBigEndianBuffer(data)
for buf.Has(2) {
opt.ArchTypes = append(opt.ArchTypes, iana.Arch(buf.Read16()))
}
return &opt, buf.FinError()
}
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