def resolve(self, request, handler):
reply = request.reply()
qname = request.q.qname
suffix = DNSLabel(self.origin)
if str(qname.label[-len(suffix.label):]).lower() == str(suffix.label).lower():
rem = DNSLabel(qname.label[:-len(suffix.label)])
print(rem)
found_rrs = []
found_glob = []
rrs = []
for extra in ZoneExtra.objects.all():
rrs += RR.fromZone(extra.entry)
for dyn in DynamicEntry.objects.all():
rrs += RR.fromZone(dyn.combined)
for rr in rrs:
if rem.matchSuffix(rr.rname):
rr.rname.label += self.origin.label
found_rrs.append(rr)
elif rem.matchGlob(rr.rname):
rr.rname.label += self.origin.label
found_glob.append(rr)
if len(found_rrs):
reply.add_auth(*RR.fromZone(f"{self.origin} 60 IN NS {settings.DNS_BASE_DOMAIN}"))
reply.add_answer(*found_rrs)
elif len(found_glob):
reply.add_auth(*RR.fromZone(f"{self.origin} 60 IN NS {settings.DNS_BASE_DOMAIN}"))
for g in found_glob:
g.set_rname(qname)
reply.add_answer(*found_glob)
cts = Container.objects.filter(name=str(str(rem)[:-1]).lower())
if cts.exists():
ct = cts.first()
reply.add_auth(*RR.fromZone(f"{self.origin} 60 IN NS {settings.DNS_BASE_DOMAIN}"))
if request.q.qtype == QTYPE.A:
for ip in ct.ip_set.all():
if ip.is_ipv4:
reply.add_answer(RR(qname, QTYPE.A, ttl=self.ttl,
rdata=A(ip.ip)))
elif ip.siit_ip.exists():
reply.add_answer(RR(qname, QTYPE.A, ttl=self.ttl,
rdata=A(ip.siit_ip.first().ip)))
if request.q.qtype == QTYPE.AAAA:
for ip in ct.ip_set.all():
if not ip.is_ipv4:
reply.add_answer(RR(qname, QTYPE.AAAA, ttl=self.ttl,
rdata=AAAA(ip.ip)))
# try other server
if len(reply.rr) == 0 and (settings.DNS_MIRROR_SERVER is not None):
print("checking other server because no rr and env: .%s. "%settings.DNS_MIRROR_SERVER)
connections.close_all() # might fail
apk = request.send(settings.DNS_MIRROR_SERVER, 53, timeout=30)
reply = DNSRecord.parse(apk)
if len(reply.rr) == 0:
reply.header.rcode = RCODE.NOERROR
else:
reply.header.rcode = RCODE.NXDOMAIN
connections.close_all()
return reply
