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Twisted DNS server!
# twistd -y
import socket
from twisted.internet.protocol import Factory, Protocol
from twisted.internet import reactor
from twisted.names import dns
from twisted.names import client, server
TO = ''
TTL = 60
class DNSServerFactory(server.DNSServerFactory):
def gotResolverResponse(self, (ans, auth, add), protocol, message, address):
qname = message.queries[0]
if CHANGE in qname:
for answer in ans:
if answer.type != dns.A:
if CHANGE not in
answer.payload.address = socket.inet_aton(TO)
answer.payload.ttl = TTL
args = (self, (ans, auth, add), protocol, message, address)
return server.DNSServerFactory.gotResolverResponse(*args)
verbosity = 0
resolver = client.Resolver(servers=[('', 53)])
factory = DNSServerFactory(clients=[resolver], verbose=verbosity)
protocol = dns.DNSDatagramProtocol(factory)
factory.noisy = protocol.noisy = verbosity
reactor.listenUDP(53, protocol)
reactor.listenTCP(53, factory)
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