def checkQuery(self, query_data):
m = None
domain = bytetodomain(query_data[12:-4])
for p in self.patterns:
m = p.match(domain)
if m:
break
if not m:
return None
print "white list match:", domain, self
return self.query(query_data)
def query(self, query_data):
domain = bytetodomain(query_data[12:-4])
qtype = struct.unpack('!h', query_data[-4:-2])[0]
id = struct.unpack('!h', query_data[0:2])[0]
#print "id", id
#msg = [line for line in str(m.from_wire(query_data)).split('\n') if line.find("id", 0, -1) < 0]
msg = query_data[4:]
responce = self._query(tuple(msg),
query_data=query_data) # query_data must be written as a named argument, because of lru_cache()
if responce:
return responce[0:2] + query_data[0:2] + responce[4:]
else:
return responce
def query(self, query_data):
domain = bytetodomain(query_data[12:-4])
qtype = struct.unpack('!h', query_data[-4:-2])[0]
id = struct.unpack('!h', query_data[0:2])[0]
#print "id", id
#msg = [line for line in str(m.from_wire(query_data)).split('\n') if line.find("id", 0, -1) < 0]
msg = query_data[4:]
responce = self._query(
tuple(msg), query_data=query_data
) # query_data must be written as a named argument, because of lru_cache()
if responce:
return responce[0:2] + query_data[0:2] + responce[4:]
else:
return responce
def transfer(self, query_data, addr, server):
if not query_data: return
domain = bytetodomain(query_data[12:-4])
qtype = struct.unpack('!h', query_data[-4:-2])[0]
#print 'domain:%s, qtype:%x, thread:%d' % (domain, qtype, threading.activeCount())
sys.stdout.flush()
response = None
for i in range(9):
response = self.servers.query(query_data)
if response:
# udp dns packet no length
server.sendto(response[2:], addr)
break
if response is None:
print "[ERROR] Tried 9 times and failed to resolve %s" % domain
return