func main() {
serial := flag.Int("serial", 0, "Perform an IXFR with the given serial")
nameserver := flag.String("ns", "127.0.0.1:53", "Query this nameserver")
tsig := flag.String("tsig", "", "request tsig with key: name:key (only hmac-md5)")
flag.Parse()
zone := flag.Arg(flag.NArg() - 1)
client := new(dns.Client)
client.Net = "tcp"
m := new(dns.Msg)
if *serial > 0 {
m.SetIxfr(zone, uint32(*serial))
} else {
m.SetAxfr(zone)
}
if *tsig != "" {
a := strings.SplitN(*tsig, ":", 2)
name, secret := a[0], a[1]
client.TsigSecret = map[string]string{name: secret}
m.SetTsig(name, dns.HmacMD5, 300, time.Now().Unix())
}
if t, e := client.XfrReceive(m, *nameserver); e == nil {
for r := range t {
if r.Error == nil {
fmt.Printf("%v\n", r.Reply)
}
}
} else {
fmt.Printf("Error %v\n", e)
}
}