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105 lines
2.8 KiB
Go
105 lines
2.8 KiB
Go
package models
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// methods that make RecordConfig meet the dns.RR interface.
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import (
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"fmt"
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"strings"
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"github.com/miekg/dns"
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)
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//// Header Header returns the header of an resource record.
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//func (rc *RecordConfig) Header() *dns.RR_Header {
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// log.Fatal("Header not implemented")
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// return nil
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//}
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// String returns the text representation of the resource record.
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func (rc *RecordConfig) String() string {
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return rc.GetTargetCombined()
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}
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//// copy returns a copy of the RR
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//func (rc *RecordConfig) copy() dns.RR {
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// log.Fatal("Copy not implemented")
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// return dns.TypeToRR[dns.TypeA]()
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//}
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//
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//// len returns the length (in octets) of the uncompressed RR in wire format.
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//func (rc *RecordConfig) len() int {
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// log.Fatal("len not implemented")
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// return 0
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//}
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//
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//// pack packs an RR into wire format.
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//func (rc *RecordConfig) pack([]byte, int, map[string]int, bool) (int, error) {
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// log.Fatal("pack not implemented")
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// return 0, nil
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//}
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// Conversions
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// RRstoRCs converts []dns.RR to []RecordConfigs.
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func RRstoRCs(rrs []dns.RR, origin string) (Records, error) {
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rcs := make(Records, 0, len(rrs))
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for _, r := range rrs {
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rc, err := RRtoRC(r, origin)
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if err != nil {
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return nil, err
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}
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rcs = append(rcs, &rc)
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}
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return rcs, nil
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}
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// RRtoRC converts dns.RR to RecordConfig
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func RRtoRC(rr dns.RR, origin string) (RecordConfig, error) {
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// Convert's dns.RR into our native data type (RecordConfig).
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// Records are translated directly with no changes.
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header := rr.Header()
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rc := new(RecordConfig)
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rc.Type = dns.TypeToString[header.Rrtype]
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rc.TTL = header.Ttl
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rc.Original = rr
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rc.SetLabelFromFQDN(strings.TrimSuffix(header.Name, "."), origin)
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var err error
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switch v := rr.(type) { // #rtype_variations
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case *dns.A:
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err = rc.SetTarget(v.A.String())
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case *dns.AAAA:
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err = rc.SetTarget(v.AAAA.String())
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case *dns.CAA:
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err = rc.SetTargetCAA(v.Flag, v.Tag, v.Value)
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case *dns.CNAME:
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err = rc.SetTarget(v.Target)
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case *dns.DS:
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err = rc.SetTargetDS(v.KeyTag, v.Algorithm, v.DigestType, v.Digest)
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case *dns.MX:
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err = rc.SetTargetMX(v.Preference, v.Mx)
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case *dns.NS:
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err = rc.SetTarget(v.Ns)
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case *dns.PTR:
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err = rc.SetTarget(v.Ptr)
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case *dns.NAPTR:
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err = rc.SetTargetNAPTR(v.Order, v.Preference, v.Flags, v.Service, v.Regexp, v.Replacement)
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case *dns.SOA:
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err = rc.SetTargetSOA(v.Ns, v.Mbox, v.Serial, v.Refresh, v.Retry, v.Expire, v.Minttl)
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case *dns.SRV:
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err = rc.SetTargetSRV(v.Priority, v.Weight, v.Port, v.Target)
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case *dns.SSHFP:
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err = rc.SetTargetSSHFP(v.Algorithm, v.Type, v.FingerPrint)
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case *dns.TLSA:
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err = rc.SetTargetTLSA(v.Usage, v.Selector, v.MatchingType, v.Certificate)
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case *dns.TXT:
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err = rc.SetTargetTXTs(v.Txt)
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default:
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return *rc, fmt.Errorf("rrToRecord: Unimplemented zone record type=%s (%v)", rc.Type, rr)
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}
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if err != nil {
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return *rc, fmt.Errorf("unparsable record received: %w", err)
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}
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return *rc, nil
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}
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