Add IPv6 AAAA record support to PiHole provider

provider/pihole/client.go

@@ -145,13 +145,24 @@ func (p *piholeClient) listRecords(ctx context.Context, rtype string) ([]*endpoi
 	if !ok {
 		return out, nil
 	}
+loop:
 	for _, rec := range data {
 		name := rec[0]
 		target := rec[1]
 		if !p.cfg.DomainFilter.Match(name) {
 			log.Debugf("Skipping %s that does not match domain filter", name)
 			continue
 		}
+		switch rtype {
+		case endpoint.RecordTypeA:
+			if strings.Contains(target, ":") {
+				continue loop
+			}
+		case endpoint.RecordTypeAAAA:
+			if strings.Contains(target, ".") {
+				continue loop
+			}
+		}
 		out = append(out, &endpoint.Endpoint{
 			DNSName:    name,
 			Targets:    []string{target},
@@ -180,7 +191,7 @@ func (p *piholeClient) cnameRecordsScript() string {
 
 func (p *piholeClient) urlForRecordType(rtype string) (string, error) {
 	switch rtype {
-	case endpoint.RecordTypeA:
+	case endpoint.RecordTypeA, endpoint.RecordTypeAAAA:
 		return p.aRecordsScript(), nil
 	case endpoint.RecordTypeCNAME:
 		return p.cnameRecordsScript(), nil
@@ -287,7 +298,7 @@ func (p *piholeClient) newDNSActionForm(action string, ep *endpoint.Endpoint) *u
 	form.Add("action", action)
 	form.Add("domain", ep.DNSName)
 	switch ep.RecordType {
-	case endpoint.RecordTypeA:
+	case endpoint.RecordTypeA, endpoint.RecordTypeAAAA:
 		form.Add("ip", ep.Targets[0])
 	case endpoint.RecordTypeCNAME:
 		form.Add("target", ep.Targets[0])

provider/pihole/pihole.go

@@ -71,10 +71,15 @@ func (p *PiholeProvider) Records(ctx context.Context) ([]*endpoint.Endpoint, err
 	if err != nil {
 		return nil, err
 	}
+	aaaaRecords, err := p.api.listRecords(ctx, endpoint.RecordTypeAAAA)
+	if err != nil {
+		return nil, err
+	}
 	cnameRecords, err := p.api.listRecords(ctx, endpoint.RecordTypeCNAME)
 	if err != nil {
 		return nil, err
 	}
+	aRecords = append(aRecords, aaaaRecords...)
 	return append(aRecords, cnameRecords...), nil
 }