More dyn update stuff
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parent
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60
update.go
60
update.go
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@ -1,7 +1,5 @@
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package dns
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import ()
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// Implements wrapper functions for dealing with dynamic update packets.
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// Dynamic update packets are identical to normal DNS messages, but the
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// names are redefined. See RFC 2136 for the details.
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@ -27,6 +25,15 @@ func (u *Update) Additional() []RR {
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return u.Msg.Extra
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}
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// NewUpdate creats a new DNS update packet.
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func NewUpdate(zone string, class uint16) *Update {
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u := new(Update)
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u.MsgHdr.Opcode = OpcodeUpdate
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u.Question = make([]Question, 1)
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u.Question[0] = Question{zone, TypeSOA, class}
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return u
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}
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// 3.2.4 - Table Of Metavalues Used In Prerequisite Section
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//
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// CLASS TYPE RDATA Meaning
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@ -37,55 +44,52 @@ func (u *Update) Additional() []RR {
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// NONE rrset empty RRset does not exist
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// zone rrset rr RRset exists (value dependent)
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// PrereqNameUsed sets the RRs in the prereq section to
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// NameUsed sets the RRs in the prereq section to
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// "Name is in use" RRs. RFC 2136 section 2.4.4.
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func (u *Update) PrereqNameUsed(rr []RR) {
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u.Msg.Answer = make([]RR, len(rr))
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func (u *Update) NameUsed(rr []RR) {
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u.Answer = make([]RR, len(rr))
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for i, r := range rr {
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u.Msg.Answer[i] = &RR_ANY{Hdr: RR_Header{Name: r.Header().Name, Ttl: 0, Rrtype: TypeANY, Class: ClassANY}}
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u.Answer[i] = &RR_ANY{Hdr: RR_Header{Name: r.Header().Name, Ttl: 0, Rrtype: TypeANY, Class: ClassANY}}
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}
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}
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// PrereqNameNotUsed sets the RRs in the prereq section to
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// NameNotUsed sets the RRs in the prereq section to
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// "Name is in not use" RRs. RFC 2136 section 2.4.5.
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func (u *Update) PrereqNameNotUsed(rr []RR) {
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u.Msg.Answer = make([]RR, len(rr))
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func (u *Update) NameNotUsed(rr []RR) {
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u.Answer = make([]RR, len(rr))
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for i, r := range rr {
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u.Msg.Answer[i] = &RR_ANY{Hdr: RR_Header{Name: r.Header().Name, Ttl: 0, Rrtype: TypeANY, Class: ClassNONE}}
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u.Answer[i] = &RR_ANY{Hdr: RR_Header{Name: r.Header().Name, Ttl: 0, Rrtype: TypeANY, Class: ClassNONE}}
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}
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}
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// PrereqRRsetUsedFull sets the RRs in the prereq section to
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// RRsetUsedFull sets the RRs in the prereq section to
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// "RRset exists (value dependent -- with rdata)" RRs. RFC 2136 section 2.4.2.
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func (u *Update) PrereqRRsetUsedFull(rr []RR) {
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u.Msg.Answer = make([]RR, len(rr))
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func (u *Update) RRsetUsedFull(rr []RR) {
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u.Answer = make([]RR, len(rr))
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for i, r := range rr {
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u.Msg.Answer[i] = r
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u.Msg.Answer[i].Header().Class = u.Msg.Question[0].Qclass // TODO crashes if question is zero
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u.Answer[i] = r
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u.Answer[i].Header().Class = u.Msg.Question[0].Qclass // TODO crashes if question is zero
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}
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}
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// PrereqRRsetUsed sets the RRs in the prereq section to
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// RRsetUsed sets the RRs in the prereq section to
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// "RRset exists (value independent -- no rdata)" RRs. RFC 2136 section 2.4.1.
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func (u *Update) PrereqRRsetUsed(rr []RR) {
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u.Msg.Answer = make([]RR, len(rr))
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func (u *Update) RRsetUsed(rr []RR) {
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u.Answer = make([]RR, len(rr))
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for i, r := range rr {
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u.Msg.Answer[i] = r
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u.Msg.Answer[i].Header().Class = ClassANY
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u.Answer[i] = r
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u.Answer[i].Header().Class = ClassANY
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/* rdata should be cleared */
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}
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}
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// PrereqRRsetNotUsed sets the RRs in the prereq section to
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// RRsetNotUsed sets the RRs in the prereq section to
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// "RRset does not exist" RRs. RFC 2136 section 2.4.3.
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func (u *Update) PrereqRRsetNotUsed(rr []RR) {
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u.Msg.Answer = make([]RR, len(rr))
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func (u *Update) RRsetNotUsed(rr []RR) {
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u.Answer = make([]RR, len(rr))
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for i, r := range rr {
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u.Msg.Answer[i] = r
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u.Msg.Answer[i].Header().Class = ClassNONE
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u.Answer[i] = r
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u.Answer[i].Header().Class = ClassNONE
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/* rdata should be cleared */
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}
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}
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