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package dhcpv6
import (
"fmt"
"github.com/insomniacslk/dhcp/iana"
"github.com/u-root/uio/uio"
)
// OptStatusCode represents a DHCPv6 Status Code option
//
// This module defines the OptStatusCode structure.
// https://www.ietf.org/rfc/rfc3315.txt
type OptStatusCode struct {
StatusCode iana.StatusCode
StatusMessage string
}
// Code returns the option code.
func (op *OptStatusCode) Code() OptionCode {
return OptionStatusCode
}
// ToBytes serializes the option and returns it as a sequence of bytes.
func (op *OptStatusCode) ToBytes() []byte {
buf := uio.NewBigEndianBuffer(nil)
buf.Write16(uint16(op.StatusCode))
buf.WriteBytes([]byte(op.StatusMessage))
return buf.Data()
}
// String returns a human-readable option.
func (op *OptStatusCode) String() string {
return fmt.Sprintf("StatusCode: Code: %s (%d); Message: %s",
op.StatusCode, op.StatusCode, op.StatusMessage)
}
// ParseOptStatusCode builds an OptStatusCode structure from a sequence of
// bytes. The input data does not include option code and length bytes.
func ParseOptStatusCode(data []byte) (*OptStatusCode, error) {
var opt OptStatusCode
buf := uio.NewBigEndianBuffer(data)
opt.StatusCode = iana.StatusCode(buf.Read16())
opt.StatusMessage = string(buf.ReadAll())
return &opt, buf.FinError()
}
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