func (s *server) PTRRecords(q dns.Question) (records []dns.RR, err error) {
name := strings.ToLower(q.Name)
path, star := msg.PathWithWildcard(name)
if star {
return nil, fmt.Errorf("reverse can not contain wildcards")
}
r, err := get(s.client, path, false)
if err != nil {
// if server has a forward, forward the query
return nil, err
}
if r.Node.Dir {
return nil, fmt.Errorf("reverse should not be a directory")
}
serv := new(msg.Service)
if err := json.Unmarshal([]byte(r.Node.Value), serv); err != nil {
s.config.log.Infof("failed to parse json: %s", err.Error())
return nil, err
}
ttl := uint32(r.Node.TTL)
if ttl == 0 {
ttl = s.config.Ttl
}
serv.Key = r.Node.Key
// If serv.Host is parseble as a IP address we should not return anything.
// TODO(miek).
records = append(records, serv.NewPTR(q.Name, ttl))
return records, nil
}