package dns // NameUsed sets the RRs in the prereq section to // "Name is in use" RRs. RFC 2136 section 2.4.4. func (u *Msg) NameUsed(rr []RR) { if u.Answer == nil { u.Answer = make([]RR, 0, len(rr)) } for _, r := range rr { u.Answer = append(u.Answer, &ANY{Hdr: RR_Header{Name: r.Header().Name, Ttl: 0, Rrtype: TypeANY, Class: ClassANY}}) } } // NameNotUsed sets the RRs in the prereq section to // "Name is in not use" RRs. RFC 2136 section 2.4.5. func (u *Msg) NameNotUsed(rr []RR) { if u.Answer == nil { u.Answer = make([]RR, 0, len(rr)) } for _, r := range rr { u.Answer = append(u.Answer, &ANY{Hdr: RR_Header{Name: r.Header().Name, Ttl: 0, Rrtype: TypeANY, Class: ClassNONE}}) } } // Used sets the RRs in the prereq section to // "RRset exists (value dependent -- with rdata)" RRs. RFC 2136 section 2.4.2. func (u *Msg) Used(rr []RR) { if len(u.Question) == 0 { panic("dns: empty question section") } if u.Answer == nil { u.Answer = make([]RR, 0, len(rr)) } for _, r := range rr { hdr := r.Header() hdr.Class = u.Question[0].Qclass hdr.Ttl = 0 u.Answer = append(u.Answer, r) } } // RRsetUsed sets the RRs in the prereq section to // "RRset exists (value independent -- no rdata)" RRs. RFC 2136 section 2.4.1. func (u *Msg) RRsetUsed(rr []RR) { if u.Answer == nil { u.Answer = make([]RR, 0, len(rr)) } for _, r := range rr { h := r.Header() u.Answer = append(u.Answer, &ANY{Hdr: RR_Header{Name: h.Name, Ttl: 0, Rrtype: h.Rrtype, Class: ClassANY}}) } } // RRsetNotUsed sets the RRs in the prereq section to // "RRset does not exist" RRs. RFC 2136 section 2.4.3. func (u *Msg) RRsetNotUsed(rr []RR) { if u.Answer == nil { u.Answer = make([]RR, 0, len(rr)) } for _, r := range rr { h := r.Header() u.Answer = append(u.Answer, &ANY{Hdr: RR_Header{Name: h.Name, Ttl: 0, Rrtype: h.Rrtype, Class: ClassNONE}}) } } // Insert creates a dynamic update packet that adds an complete RRset, see RFC 2136 section 2.5.1. func (u *Msg) Insert(rr []RR) { if len(u.Question) == 0 { panic("dns: empty question section") } if u.Ns == nil { u.Ns = make([]RR, 0, len(rr)) } for _, r := range rr { r.Header().Class = u.Question[0].Qclass u.Ns = append(u.Ns, r) } } // RemoveRRset creates a dynamic update packet that deletes an RRset, see RFC 2136 section 2.5.2. func (u *Msg) RemoveRRset(rr []RR) { if u.Ns == nil { u.Ns = make([]RR, 0, len(rr)) } for _, r := range rr { h := r.Header() u.Ns = append(u.Ns, &ANY{Hdr: RR_Header{Name: h.Name, Ttl: 0, Rrtype: h.Rrtype, Class: ClassANY}}) } } // RemoveName creates a dynamic update packet that deletes all RRsets of a name, see RFC 2136 section 2.5.3 func (u *Msg) RemoveName(rr []RR) { if u.Ns == nil { u.Ns = make([]RR, 0, len(rr)) } for _, r := range rr { u.Ns = append(u.Ns, &ANY{Hdr: RR_Header{Name: r.Header().Name, Ttl: 0, Rrtype: TypeANY, Class: ClassANY}}) } } // Remove creates a dynamic update packet deletes RR from a RRSset, see RFC 2136 section 2.5.4 func (u *Msg) Remove(rr []RR) { if u.Ns == nil { u.Ns = make([]RR, 0, len(rr)) } for _, r := range rr { h := r.Header() h.Class = ClassNONE h.Ttl = 0 u.Ns = append(u.Ns, r) } }