65 lines
1.4 KiB
Go
65 lines
1.4 KiB
Go
package main
|
|
|
|
// Xfrprx is a proxy that intercepts notify messages
|
|
// and then performs a ixfr/axfr to get the new
|
|
// zone contents.
|
|
// This zone is then checked cryptographically is
|
|
// everything is correct.
|
|
// If a new DNSKEY record is seen for the apex and
|
|
// it validates it writes this record to disk and
|
|
// this new key will be used in future validations.
|
|
|
|
import (
|
|
"os"
|
|
"os/signal"
|
|
// "net"
|
|
"fmt"
|
|
"dns"
|
|
)
|
|
|
|
func reply(d *dns.Conn, i *dns.Msg) []byte {
|
|
return nil
|
|
}
|
|
|
|
func handle(d *dns.Conn, i *dns.Msg) {
|
|
if i.MsgHdr.Response == true {
|
|
return
|
|
}
|
|
answer := reply(d, i)
|
|
d.Write(answer)
|
|
}
|
|
|
|
func listen(addr string, e chan os.Error, tcp string) {
|
|
switch tcp {
|
|
case "tcp":
|
|
err := dns.ListenAndServeTCP(addr, handle)
|
|
e <- err
|
|
case "udp":
|
|
err := dns.ListenAndServeUDP(addr, handle)
|
|
e <- err
|
|
}
|
|
return
|
|
}
|
|
|
|
func main() {
|
|
err := make(chan os.Error)
|
|
go listen("127.0.0.1:8053", err, "tcp")
|
|
go listen("[::1]:8053", err, "udp")
|
|
go listen("127.0.0.1:8053", err, "tcp")
|
|
go listen("[::1]:8053", err, "udp")
|
|
|
|
forever:
|
|
for {
|
|
select {
|
|
case e := <-err:
|
|
fmt.Printf("Error received, stopping: %s\n", e.String())
|
|
break forever
|
|
case <-signal.Incoming:
|
|
fmt.Printf("Signal received, stopping")
|
|
break forever
|
|
}
|
|
}
|
|
close(err)
|
|
|
|
}
|