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package dhcpv6
import (
"net"
"time"
"github.com/insomniacslk/dhcp/iana"
"github.com/insomniacslk/dhcp/rfc1035label"
)
// WithOption adds the specific option to the DHCPv6 message.
func WithOption(o Option) Modifier {
return func(d DHCPv6) {
d.UpdateOption(o)
}
}
// WithClientID adds a client ID option to a DHCPv6 packet
func WithClientID(duid DUID) Modifier {
return WithOption(OptClientID(duid))
}
// WithServerID adds a client ID option to a DHCPv6 packet
func WithServerID(duid DUID) Modifier {
return WithOption(OptServerID(duid))
}
// WithNetboot adds bootfile URL and bootfile param options to a DHCPv6 packet.
func WithNetboot(d DHCPv6) {
WithRequestedOptions(OptionBootfileURL, OptionBootfileParam)(d)
}
// WithFQDN adds a fully qualified domain name option to the packet
func WithFQDN(flags uint8, domainname string) Modifier {
return func(d DHCPv6) {
d.UpdateOption(&OptFQDN{
Flags: flags,
DomainName: &rfc1035label.Labels{
Labels: []string{domainname},
},
})
}
}
// WithUserClass adds a user class option to the packet
func WithUserClass(uc []byte) Modifier {
// TODO let the user specify multiple user classes
return func(d DHCPv6) {
ouc := OptUserClass{UserClasses: [][]byte{uc}}
d.AddOption(&ouc)
}
}
// WithArchType adds an arch type option to the packet
func WithArchType(at iana.Arch) Modifier {
return func(d DHCPv6) {
d.AddOption(OptClientArchType(at))
}
}
// WithIANA adds or updates an OptIANA option with the provided IAAddress
// options
func WithIANA(addrs ...OptIAAddress) Modifier {
return func(d DHCPv6) {
if msg, ok := d.(*Message); ok {
iana := msg.Options.OneIANA()
if iana == nil {
iana = &OptIANA{}
}
for _, addr := range addrs {
iana.Options.Add(&addr)
}
msg.UpdateOption(iana)
}
}
}
// WithIAID updates an OptIANA option with the provided IAID
func WithIAID(iaid [4]byte) Modifier {
return func(d DHCPv6) {
if msg, ok := d.(*Message); ok {
iana := msg.Options.OneIANA()
if iana == nil {
iana = &OptIANA{
Options: IdentityOptions{Options: []Option{}},
}
}
copy(iana.IaId[:], iaid[:])
d.UpdateOption(iana)
}
}
}
// WithIATA adds or updates an OptIATA option with the provided IAID,
// and IAAddress options
func WithIATA(iaid [4]byte, addrs ...OptIAAddress) Modifier {
return func(d DHCPv6) {
if msg, ok := d.(*Message); ok {
iata := msg.Options.OneIATA()
if iata == nil {
iata = &OptIATA{}
}
copy(iata.IaId[:], iaid[:])
for _, addr := range addrs {
iata.Options.Add(&addr)
}
msg.UpdateOption(iata)
}
}
}
// WithDNS adds or updates an OptDNSRecursiveNameServer
func WithDNS(dnses ...net.IP) Modifier {
return WithOption(OptDNS(dnses...))
}
// WithDomainSearchList adds or updates an OptDomainSearchList
func WithDomainSearchList(searchlist ...string) Modifier {
return func(d DHCPv6) {
d.UpdateOption(OptDomainSearchList(
&rfc1035label.Labels{
Labels: searchlist,
},
))
}
}
// WithRapidCommit adds the rapid commit option to a message.
func WithRapidCommit(d DHCPv6) {
d.UpdateOption(&OptionGeneric{OptionCode: OptionRapidCommit})
}
// WithRequestedOptions adds requested options to the packet
func WithRequestedOptions(codes ...OptionCode) Modifier {
return func(d DHCPv6) {
if msg, ok := d.(*Message); ok {
oro := msg.Options.RequestedOptions()
for _, c := range codes {
oro.Add(c)
}
d.UpdateOption(OptRequestedOption(oro...))
}
}
}
// WithDHCP4oDHCP6Server adds or updates an OptDHCP4oDHCP6Server
func WithDHCP4oDHCP6Server(addrs ...net.IP) Modifier {
return func(d DHCPv6) {
opt := OptDHCP4oDHCP6Server{
DHCP4oDHCP6Servers: addrs,
}
d.UpdateOption(&opt)
}
}
// WithIAPD adds or updates an IAPD option with the provided IAID and
// prefix options to a DHCPv6 packet.
func WithIAPD(iaid [4]byte, prefixes ...*OptIAPrefix) Modifier {
return func(d DHCPv6) {
if msg, ok := d.(*Message); ok {
opt := msg.Options.OneIAPD()
if opt == nil {
opt = &OptIAPD{}
}
copy(opt.IaId[:], iaid[:])
for _, prefix := range prefixes {
opt.Options.Add(prefix)
}
d.UpdateOption(opt)
}
}
}
// WithClientLinkLayerAddress adds or updates the ClientLinkLayerAddress
// option with provided HWType and HWAddress on a DHCPv6 packet
func WithClientLinkLayerAddress(ht iana.HWType, lla net.HardwareAddr) Modifier {
return WithOption(OptClientLinkLayerAddress(ht, lla))
}
// WithInformationRefreshTime adds an optInformationRefreshTime to the DHCPv6 packet
// using the provided duration
func WithInformationRefreshTime(irt time.Duration) Modifier {
return WithOption(OptInformationRefreshTime(irt))
}
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