/
zone.go
48 lines (40 loc) · 1.1 KB
/
zone.go
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package realm
import (
"fmt"
"os"
"github.com/miekg/dns"
)
// A Zone a container for records parsed from a zone file.
type Zone struct {
records []dns.RR
}
// ParseZone will attempt to parse a zone file from the provided filename and return a Zone.
// ParseZone will return an error if the file provided does not exist or could not be properly parsed.
func ParseZone(filename string) (*Zone, error) {
var zone *Zone
var err error
zone = &Zone{
records: make([]dns.RR, 0),
}
// Open the file
var file *os.File
file, err = os.Open(filename)
if err != nil {
return nil, fmt.Errorf("could not parse zone file \"%s\": \"%s\"", filename, err)
}
defer file.Close()
// Parse the file into records
var tokens chan *dns.Token
tokens = dns.ParseZone(file, "", "")
for token := range tokens {
if token.Error != nil {
return nil, fmt.Errorf("could not parse zone file \"%s\": \"%s\"", filename, token.Error)
}
zone.records = append(zone.records, token.RR)
}
return zone, nil
}
// Records will retrieve the DNS records for this zone
func (zone *Zone) Records() []dns.RR {
return zone.records
}