func main() {
c, _ := dns.ClientConfigFromFile("/etc/resolv.conf")
if len(os.Args) != 2 {
fmt.Printf("%s DOMAIN\n", os.Args[0])
os.Exit(1)
}
m := new(dns.Msg)
m.Question = make([]dns.Question, 1)
d := new(dns.Conn)
d.RemoteAddr = c.Servers[0]
for _, a := range addresses(d, os.Args[0]) {
d.RemoteAddr = a
if err := d.Dial("udp"); err != nil {
fmt.Printf("%v\n", err)
os.Exit(1)
}
m.Question[0] = dns.Question{"version.bind.", dns.TypeTXT, dns.ClassCHAOS}
in, _ := dns.SimpleQuery("udp", d, m)
if in != nil && in.Answer != nil {
fmt.Printf("%v\n", in.Answer[0])
}
m.Question[0] = dns.Question{"hostname.bind.", dns.TypeTXT, dns.ClassCHAOS}
in, _ = dns.SimpleQuery("udp", d, m)
if in != nil && in.Answer != nil {
fmt.Printf("%v\n", in.Answer[0])
}
}
}
func handleXfrIn(i *dns.Msg) os.Error {
q := new(dns.Msg)
q.SetAxfr(i.Question[0].Name)
m := make(chan *dns.Xfr)
fmt.Printf("Preparing Xfr for %s\n", i.Question[0].Name)
d := new(dns.Conn)
d.RemoteAddr = "127.0.0.1:53"
err := d.Dial("tcp")
if err != nil {
return err
}
defer d.Close()
fmt.Printf("Calling 127.0.0.1 successful\n")
go d.XfrRead(q, m)
Zone.name = i.Question[0].Name
j := 0
for x := range m {
Zone.rrs[j] = x.RR
j++
}
fmt.Printf("Success retrieved %s\n", Zone.name)
Zone.size = j
return nil
}
func main() {
if len(os.Args) != 2 {
fmt.Printf("%s DOMAIN\n", os.Args[0])
os.Exit(1)
}
d := new(dns.Conn)
c, err := dns.ClientConfigFromFile("/etc/resolv.conf")
// Errorchecking
d.RemoteAddr = c.Servers[0]
m := new(dns.Msg)
m.Id = dns.Id()
m.MsgHdr.RecursionDesired = true
m.Question = make([]dns.Question, 1)
m.Question[0] = dns.Question{os.Args[1], dns.TypeMX, dns.ClassINET}
err = d.Dial("udp")
if err != nil {
fmt.Printf("*** error: %s\n", err.String())
os.Exit(1)
}
in, err := dns.SimpleQuery("udp", d, m)
if in != nil {
if in.Rcode != dns.RcodeSuccess {
fmt.Printf(" *** invalid answer name %s after MX query for %s\n", os.Args[1], os.Args[1])
os.Exit(1)
}
// Stuff must be in the answer section
for _, a := range in.Answer {
fmt.Printf("%v\n", a)
}
} else {
fmt.Printf("*** error: %s\n", err.String())
}
}