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853ea371ce
- Supports centralized `config.json` - Supports centralized `bucket` service records for client lookups - implement a new proxy forwarder
107 lines
3.1 KiB
Go
107 lines
3.1 KiB
Go
package dns
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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 *Msg) NameUsed(rr []RR) {
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if u.Answer == nil {
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u.Answer = make([]RR, 0, len(rr))
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}
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for _, r := range rr {
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u.Answer = append(u.Answer, &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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// 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 *Msg) NameNotUsed(rr []RR) {
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if u.Answer == nil {
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u.Answer = make([]RR, 0, len(rr))
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}
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for _, r := range rr {
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u.Answer = append(u.Answer, &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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// Used 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 *Msg) Used(rr []RR) {
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if len(u.Question) == 0 {
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panic("dns: empty question section")
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}
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if u.Answer == nil {
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u.Answer = make([]RR, 0, len(rr))
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}
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for _, r := range rr {
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r.Header().Class = u.Question[0].Qclass
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u.Answer = append(u.Answer, r)
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}
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}
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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 *Msg) RRsetUsed(rr []RR) {
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if u.Answer == nil {
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u.Answer = make([]RR, 0, len(rr))
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}
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for _, r := range rr {
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u.Answer = append(u.Answer, &ANY{Hdr: RR_Header{Name: r.Header().Name, Ttl: 0, Rrtype: r.Header().Rrtype, Class: ClassANY}})
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}
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}
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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 *Msg) RRsetNotUsed(rr []RR) {
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if u.Answer == nil {
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u.Answer = make([]RR, 0, len(rr))
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}
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for _, r := range rr {
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u.Answer = append(u.Answer, &ANY{Hdr: RR_Header{Name: r.Header().Name, Ttl: 0, Rrtype: r.Header().Rrtype, Class: ClassNONE}})
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}
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}
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// Insert creates a dynamic update packet that adds an complete RRset, see RFC 2136 section 2.5.1.
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func (u *Msg) Insert(rr []RR) {
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if len(u.Question) == 0 {
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panic("dns: empty question section")
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}
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if u.Ns == nil {
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u.Ns = make([]RR, 0, len(rr))
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}
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for _, r := range rr {
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r.Header().Class = u.Question[0].Qclass
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u.Ns = append(u.Ns, r)
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}
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}
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// RemoveRRset creates a dynamic update packet that deletes an RRset, see RFC 2136 section 2.5.2.
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func (u *Msg) RemoveRRset(rr []RR) {
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if u.Ns == nil {
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u.Ns = make([]RR, 0, len(rr))
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}
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for _, r := range rr {
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u.Ns = append(u.Ns, &ANY{Hdr: RR_Header{Name: r.Header().Name, Ttl: 0, Rrtype: r.Header().Rrtype, Class: ClassANY}})
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}
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}
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// RemoveName creates a dynamic update packet that deletes all RRsets of a name, see RFC 2136 section 2.5.3
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func (u *Msg) RemoveName(rr []RR) {
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if u.Ns == nil {
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u.Ns = make([]RR, 0, len(rr))
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}
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for _, r := range rr {
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u.Ns = append(u.Ns, &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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// Remove creates a dynamic update packet deletes RR from a RRSset, see RFC 2136 section 2.5.4
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func (u *Msg) Remove(rr []RR) {
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if u.Ns == nil {
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u.Ns = make([]RR, 0, len(rr))
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}
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for _, r := range rr {
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r.Header().Class = ClassNONE
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r.Header().Ttl = 0
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u.Ns = append(u.Ns, r)
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}
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}
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