diff options
| author | MDK <[email protected]> | 2023-09-09 16:07:39 +0800 |
|---|---|---|
| committer | MDK <[email protected]> | 2023-09-09 16:07:39 +0800 |
| commit | b1c97a13d3debc1c9c0736548c013cce740899d1 (patch) | |
| tree | cc1f244c5f1098dc313dad40eb1c23b16f1646d4 | |
| parent | 4502a24c387c056206f22f741c1816bc7294049b (diff) | |
new features added -- bailiwick test, ns chain, cname chain
| -rw-r--r-- | echodns.go | 50 |
1 files changed, 50 insertions, 0 deletions
@@ -41,6 +41,12 @@ func strategyMaker(name string, qtype uint16) int8 { return 6 // return response with wrong txid
} else if strings.Contains(subdomain, "wrong-rec") {
return 7 // return response with wrong records
+ } else if strings.Contains(subdomain, "bailiwick") {
+ return 8 // bailiwick verification
+ } else if strings.Contains(subdomain, "cname-chain") {
+ return 9 // unlimited ns chain
+ } else if strings.Contains(subdomain, "ns-chain") {
+ return 10 // unlimited cname chain
}
}
return -1
@@ -78,6 +84,7 @@ func handleReflect(w dns.ResponseWriter, r *dns.Msg) { }
id = m.MsgHdr.Id
name = m.Question[0].Name
+ subdomain := strings.ToLower(strings.Split(name, ".")[0])
qtype = m.Question[0].Qtype
log.Log().Str("sip", ip.String()).Int64("port", int64(port)).Int64("id", int64(id)).Str("name", name).Int64("qtype", int64(qtype)).Msg("")
//log.Printf("%v|%v|%v|%v|%v", ip, port, id, name, qtype)
@@ -140,6 +147,49 @@ func handleReflect(w dns.ResponseWriter, r *dns.Msg) { AAAA: net.ParseIP("fe80::7526:a2ae:a0b8:946d"),
}
m.Answer = append(m.Answer, wrong_answer)
+ case 8:
+ wrong_ns := &dns.NS{
+ Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypeNS, Class: dns.ClassINET, Ttl: 60},
+ Ns: dns.Fqdn("dns.baidu.com"),
+ }
+ wrong_ns_ip := &dns.A{
+ Hdr: dns.RR_Header{Name: "dns.baidu.com.", Rrtype: dns.TypeA, Class: dns.ClassINET, Ttl: 60},
+ A: net.ParseIP("159.75.200.247"),
+ }
+ m.Ns = append(m.Ns, wrong_ns)
+ m.Extra = append(m.Extra, wrong_ns_ip)
+ case 9:
+ cname_target := ""
+ labels := strings.Split(subdomain, "-")
+ if len(labels) == 2 {
+ cname_target = subdomain + "-0"
+ } else {
+ iter_cnt, _ := strconv.Atoi(labels[len(labels)-1])
+ iter_cnt += 1
+ cname_target = strings.Join([]string{labels[0], labels[1], strconv.Itoa(iter_cnt)}, "-")
+ }
+ cname_target = dns.Fqdn(cname_target + "." + CONFIG_SLD)
+ cname_redir := &dns.CNAME{
+ Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypeCNAME, Class: dns.ClassINET, Ttl: 60},
+ Target: cname_target,
+ }
+ m.Answer = append(m.Answer, cname_redir)
+ case 10:
+ ns_target := ""
+ labels := strings.Split(subdomain, "-")
+ if len(labels) == 2 {
+ ns_target = subdomain + "-0"
+ } else {
+ iter_cnt, _ := strconv.Atoi(labels[len(labels)-1])
+ iter_cnt += 1
+ ns_target = strings.Join([]string{labels[0], labels[1], strconv.Itoa(iter_cnt)}, "-")
+ }
+ ns_target = dns.Fqdn(ns_target + "." + CONFIG_SLD)
+ ns_delegation := &dns.NS{
+ Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypeNS, Class: dns.ClassINET, Ttl: 60},
+ Ns: ns_target,
+ }
+ m.Ns = append(m.Ns, ns_delegation)
case 0:
a := &dns.A{
Hdr: dns.RR_Header{Name: name, Rrtype: dns.TypeA, Class: dns.ClassINET, Ttl: 3600},
|