mirror of
https://github.com/miekg/dns.git
synced 2025-10-12 10:21:00 +02:00
70 lines
1.3 KiB
Go
70 lines
1.3 KiB
Go
/*
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* Send back REFUSED
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*
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* Stephane Bortzmeyer <stephane+grong@bortzmeyer.org>
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*
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* Adapted to Go DNS (i.e. completely rewritten)
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* Miek Gieben <miek@miek.nl>
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*/
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package main
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import (
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"net"
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"dns"
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"dns/responder"
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"os/signal"
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)
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type server responder.Server
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func (s *server) ResponderUDP(c *net.UDPConn, a net.Addr, in []byte) {
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inmsg := new(dns.Msg)
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if !inmsg.Unpack(in) {
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// FormError
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// NXdomain 'n stuff
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println("Unpacking failed")
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}
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if inmsg.MsgHdr.Response == true {
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return // don't answer responses
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}
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m := new(dns.Msg)
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m.MsgHdr.Id = inmsg.MsgHdr.Id
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m.MsgHdr.Response = true
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m.MsgHdr.Opcode = dns.OpcodeQuery
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m.MsgHdr.Rcode = dns.RcodeRefused
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m.Question = make([]dns.Question, 1)
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m.Question[0] = inmsg.Question[0]
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out, b := m.Pack()
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if !b {
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println("Failed to pack")
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}
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responder.SendUDP(out, c, a)
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}
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func (s *server) ResponderTCP(c *net.TCPConn, in []byte) {
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return
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}
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func main() {
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s := new(responder.Server)
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s.Address = "127.0.0.1"
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s.Port = "8053"
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var srv *server
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ch := make(chan bool)
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go s.NewResponder(srv, ch)
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forever:
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for {
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// Wait for a signal to stop
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select {
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case <-signal.Incoming:
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println("Signal received, stopping")
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ch <- true
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<-ch
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break forever
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}
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}
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}
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