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package dhcpv6
// This module defines the OptNetworkInterfaceId structure.
// https://www.ietf.org/rfc/rfc5970.txt
import (
"encoding/binary"
"fmt"
)
// see rfc4578
const (
NII_LANDESK_NOPXE = iota
NII_PXE_GEN_I
NII_PXE_GEN_II
NII_UNDI_NOEFI
NII_UNDI_EFI_GEN_I
NII_UNDI_EFI_GEN_II
)
var NIIToStringMap = map[uint8]string{
NII_LANDESK_NOPXE: "LANDesk service agent boot ROMs. No PXE",
NII_PXE_GEN_I: "First gen. PXE boot ROMs",
NII_PXE_GEN_II: "Second gen. PXE boot ROMs",
NII_UNDI_NOEFI: "UNDI 32/64 bit. UEFI drivers, no UEFI runtime",
NII_UNDI_EFI_GEN_I: "UNDI 32/64 bit. UEFI runtime 1st gen",
NII_UNDI_EFI_GEN_II: "UNDI 32/64 bit. UEFI runtime 2nd gen",
}
type OptNetworkInterfaceId struct {
type_ uint8
major, minor uint8 // revision number
}
func (op *OptNetworkInterfaceId) Code() OptionCode {
return OPTION_NII
}
func (op *OptNetworkInterfaceId) ToBytes() []byte {
buf := make([]byte, 7)
binary.BigEndian.PutUint16(buf[0:2], uint16(OPTION_NII))
binary.BigEndian.PutUint16(buf[2:5], uint16(op.Length()))
buf[5] = op.type_
buf[6] = op.major
buf[7] = op.minor
return buf
}
func (op *OptNetworkInterfaceId) Type() uint8 {
return op.type_
}
func (op *OptNetworkInterfaceId) SetType(type_ uint8) {
op.type_ = type_
}
func (op *OptNetworkInterfaceId) Major() uint8 {
return op.major
}
func (op *OptNetworkInterfaceId) SetMajor(major uint8) {
op.major = major
}
func (op *OptNetworkInterfaceId) Minor() uint8 {
return op.minor
}
func (op *OptNetworkInterfaceId) SetMinor(minor uint8) {
op.minor = minor
}
func (op *OptNetworkInterfaceId) Length() int {
return 3
}
func (op *OptNetworkInterfaceId) String() string {
typeName, ok := NIIToStringMap[op.type_]
if !ok {
typeName = "Unknown"
}
return fmt.Sprintf("OptNetworkInterfaceId{type=%v, revision=%v.%v}",
typeName, op.major, op.minor,
)
}
// build an OptNetworkInterfaceId structure from a sequence of bytes.
// The input data does not include option code and length bytes.
func ParseOptNetworkInterfaceId(data []byte) (*OptNetworkInterfaceId, error) {
opt := OptNetworkInterfaceId{}
if len(data) != 3 {
return nil, fmt.Errorf("Invalid arch type data length. Expected 3 bytes, got %v", len(data))
}
opt.type_ = data[0]
opt.major = data[1]
opt.minor = data[2]
return &opt, nil
}
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