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package dhcpv6
import (
"fmt"
"github.com/u-root/u-root/pkg/uio"
)
// OptVendorOpts represents a DHCPv6 Status Code option
//
// This module defines the OptVendorOpts structure.
// https://tools.ietf.org/html/rfc3315#section-22.17
type OptVendorOpts struct {
EnterpriseNumber uint32
VendorOpts Options
}
// Code returns the option code
func (op *OptVendorOpts) Code() OptionCode {
return OptionVendorOpts
}
// ToBytes serializes the option and returns it as a sequence of bytes
func (op *OptVendorOpts) ToBytes() []byte {
buf := uio.NewBigEndianBuffer(nil)
buf.Write32(op.EnterpriseNumber)
buf.WriteData(op.VendorOpts.ToBytes())
return buf.Data()
}
// String returns a string representation of the VendorOpts data
func (op *OptVendorOpts) String() string {
return fmt.Sprintf("OptVendorOpts{enterprisenum=%v, vendorOpts=%v}",
op.EnterpriseNumber, op.VendorOpts,
)
}
// ParseOptVendorOpts builds an OptVendorOpts structure from a sequence of bytes.
// The input data does not include option code and length bytes.
func ParseOptVendorOpts(data []byte) (*OptVendorOpts, error) {
var opt OptVendorOpts
buf := uio.NewBigEndianBuffer(data)
opt.EnterpriseNumber = buf.Read32()
if err := opt.VendorOpts.FromBytesWithParser(buf.ReadAll(), vendParseOption); err != nil {
return nil, err
}
return &opt, buf.FinError()
}
// vendParseOption builds a GenericOption from a slice of bytes
// We cannot use the existing ParseOption function in options.go because the
// sub-options include codes specific to each vendor. There are overlaps in these
// codes with RFC standard codes.
func vendParseOption(code OptionCode, data []byte) (Option, error) {
return &OptionGeneric{OptionCode: code, OptionData: data}, nil
}
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