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package dhcpv6
import (
"log"
"net"
"github.com/insomniacslk/dhcp/iana"
"github.com/insomniacslk/dhcp/rfc1035label"
)
// WithClientID adds a client ID option to a DHCPv6 packet
func WithClientID(duid Duid) Modifier {
return func(d DHCPv6) {
cid := OptClientId{Cid: duid}
d.UpdateOption(&cid)
}
}
// WithServerID adds a client ID option to a DHCPv6 packet
func WithServerID(duid Duid) Modifier {
return func(d DHCPv6) {
sid := OptServerId{Sid: duid}
d.UpdateOption(&sid)
}
}
// WithNetboot adds bootfile URL and bootfile param options to a DHCPv6 packet.
func WithNetboot(d DHCPv6) {
msg, ok := d.(*Message)
if !ok {
log.Printf("WithNetboot: not a Message")
return
}
// add OptionBootfileURL and OptionBootfileParam
opt := msg.GetOneOption(OptionORO)
if opt == nil {
opt = &OptRequestedOption{}
}
// TODO only add options if they are not there already
oro := opt.(*OptRequestedOption)
oro.AddRequestedOption(OptionBootfileURL)
oro.AddRequestedOption(OptionBootfileParam)
msg.UpdateOption(oro)
}
// WithFQDN adds a fully qualified domain name option to the packet
func WithFQDN(flags uint8, domainname string) Modifier {
return func(d DHCPv6) {
ofqdn := OptFQDN{Flags: flags, DomainName: domainname}
d.AddOption(&ofqdn)
}
}
// 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) {
ao := OptClientArchType{ArchTypes: []iana.Arch{at}}
d.AddOption(&ao)
}
}
// WithIANA adds or updates an OptIANA option with the provided IAAddress
// options
func WithIANA(addrs ...OptIAAddress) Modifier {
return func(d DHCPv6) {
opt := d.GetOneOption(OptionIANA)
if opt == nil {
opt = &OptIANA{}
}
iaNa := opt.(*OptIANA)
for _, addr := range addrs {
iaNa.AddOption(&addr)
}
d.UpdateOption(iaNa)
}
}
// WithIAID updates an OptIANA option with the provided IAID
func WithIAID(iaid [4]byte) Modifier {
return func(d DHCPv6) {
opt := d.GetOneOption(OptionIANA)
if opt == nil {
opt = &OptIANA{
Options: Options{},
}
}
iaNa := opt.(*OptIANA)
copy(iaNa.IaId[:], iaid[:])
d.UpdateOption(iaNa)
}
}
// WithDNS adds or updates an OptDNSRecursiveNameServer
func WithDNS(dnses ...net.IP) Modifier {
return func(d DHCPv6) {
odns := OptDNSRecursiveNameServer{
NameServers: append([]net.IP{}, dnses[:]...),
}
d.UpdateOption(&odns)
}
}
// WithDomainSearchList adds or updates an OptDomainSearchList
func WithDomainSearchList(searchlist ...string) Modifier {
return func(d DHCPv6) {
osl := OptDomainSearchList{
DomainSearchList: &rfc1035label.Labels{
Labels: searchlist,
},
}
d.UpdateOption(&osl)
}
}
// 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(optionCodes ...OptionCode) Modifier {
return func(d DHCPv6) {
opt := d.GetOneOption(OptionORO)
if opt == nil {
opt = &OptRequestedOption{}
}
oro := opt.(*OptRequestedOption)
for _, optionCode := range optionCodes {
oro.AddRequestedOption(optionCode)
}
d.UpdateOption(oro)
}
}
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