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https://github.com/adulau/DomainClassifier.git
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Merge pull request #6 from Terrtia/master
chg: [domclassifier] add dns records redis cache + regex timeout
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GitHub
commit
84d2a3cf1f
4 changed files with 103 additions and 38 deletions
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@ -1 +1 @@
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__version__ = "1.0"
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__version__ = "1.1"
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@ -7,10 +7,15 @@ attributes.
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import re
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import dns.resolver
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import IPy
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import redis
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import socket
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import time
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from datetime import date, timedelta
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import os
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import sys
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from uuid import uuid4
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from multiprocessing import Process as Proc
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try:
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# python 3
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@ -24,9 +29,9 @@ try:
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except:
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print("pybgpranking is not installed - ranking of ASN values won't be possible")
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__author__ = "Alexandre Dulaunoy"
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__copyright__ = "Copyright 2012-2021, Alexandre Dulaunoy"
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__copyright__ = "Copyright 2012-2024, Alexandre Dulaunoy"
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__license__ = "AGPL version 3"
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__version__ = "0.9"
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__version__ = "1.1"
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class Extract:
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@ -35,7 +40,7 @@ class Extract:
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from a rawtext stream. When call, the rawtext parameter is a string
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containing the raw data to be process."""
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def __init__(self, rawtext=None, nameservers=['8.8.8.8'], port=53):
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def __init__(self, rawtext=None, nameservers=['8.8.8.8'], port=53, redis_host='', redis_port=6379, redis_db=0, expire_time=3600, re_timeout=-1):
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self.rawtext = rawtext
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self.presolver = dns.resolver.Resolver()
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self.presolver.nameservers = nameservers
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@ -44,6 +49,17 @@ class Extract:
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self.bgprankingserver = 'pdns.circl.lu'
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self.vdomain = []
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self.listtld = []
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self.re_domain = re.compile(r'\b([a-zA-Z\d-]{,63}(\.[a-zA-Z\d-]{,63})+)\b')
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if redis_host and redis_port:
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self.redis = redis.StrictRedis(host=redis_host, port=redis_port, db=redis_db, decode_responses=True)
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self.uuid = str(uuid4())
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self.re_timeout = re_timeout
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else:
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self.redis = None
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self.expire_time = expire_time
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self.domain = self.potentialdomain()
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"""__origin is a private function to the ASN lookup for an IP address via
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@ -123,7 +139,32 @@ class Extract:
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return self.cleandomain
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def text(self, rawtext=False):
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def __re_findall(self, rawtext):
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for x in re.findall(self.re_domain, rawtext):
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if x[0]:
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self.redis.sadd('cache:regex:{}'.format(self.uuid), x[0])
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self.redis.expire('cache:regex:{}'.format(self.uuid), 360)
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def __regex_findall(self, rawtext, timeout):
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proc = Proc(target=self.__re_findall, args=(rawtext,))
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try:
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proc.start()
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proc.join(timeout)
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if proc.is_alive():
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proc.terminate()
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print('regex: processing timeout')
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return []
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else:
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domains = self.redis.smembers('cache:regex:{}'.format(self.uuid))
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self.redis.delete('cache:regex:{}'.format(self.uuid))
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proc.terminate()
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return domains
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except KeyboardInterrupt:
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print("Caught KeyboardInterrupt, terminating workers")
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proc.terminate()
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sys.exit(0)
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def text(self, rawtext=''):
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if rawtext:
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self.rawtext = rawtext
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self.domain = self.potentialdomain()
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@ -132,16 +173,19 @@ class Extract:
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return False
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"""potentialdomain method extracts potential domains matching any
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string that is a serie of string with maximun 63 character separated by a
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string that is a serie of string with maximum 63 character separated by a
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dot. The method used the rawtext defined at the instantiation of the class.
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This return a list of a potential domain."""
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def potentialdomain(self, validTLD=True):
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self.domain = []
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domain = re.compile(r'\b([a-zA-Z\d-]{,63}(\.[a-zA-Z\d-]{,63})+)\b')
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for x in domain.findall(self.rawtext):
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if x[0]:
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self.domain.append(x[0])
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if self.re_timeout > 0 and self.redis:
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self.domain = list(self.__regex_findall(self.rawtext, self.re_timeout))
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else:
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domains = self.re_domain.findall(self.rawtext)
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for x in domains:
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if x[0]:
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self.domain.append(x[0])
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if validTLD:
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self.domain = self.__listtld()
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return self.domain
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@ -164,34 +208,54 @@ class Extract:
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self.vdomain = []
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for domain in self.domain:
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for dnstype in rtype:
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try:
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answers = self.presolver.query(domain, dnstype)
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except:
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pass
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else:
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# Pasive DNS output
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# timestamp||dns-client ||dns-server||RR class||Query||Query Type||Answer||TTL||Count
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if passive_dns:
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rrset = answers.rrset.to_text().splitlines()
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for dns_resp in rrset:
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dns_resp = dns_resp.split()
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passive_dns_out = (
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'{}||127.0.0.1||{}||{}||{}||{}||{}||{}||1\n'.format(
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time.time(),
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self.presolver.nameservers[0],
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dns_resp[2],
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domain,
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dnstype,
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dns_resp[4],
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answers.ttl,
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)
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)
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self.vdomain.add((passive_dns_out))
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elif extended:
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self.vdomain.append((domain, dnstype, answers[0]))
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if self.redis:
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if self.redis.exists('dom_class:cache:{}'.format(domain)):
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passive_dns_out = self.redis.smembers('dom_class:cache:{}'.format(domain))
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for out in passive_dns_out:
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if extended:
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out = tuple(out.split('[^]', 2))
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self.vdomain.append(out)
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else:
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self.vdomain.add(out)
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else:
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for dnstype in rtype:
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try:
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answers = self.presolver.query(domain, dnstype)
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except:
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pass
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else:
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self.vdomain.add((domain))
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# Passive DNS output
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# timestamp||dns-client ||dns-server||RR class||Query||Query Type||Answer||TTL||Count
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if passive_dns:
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rrset = answers.rrset.to_text().splitlines()
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for dns_resp in rrset:
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dns_resp = dns_resp.split()
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passive_dns_out = (
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'{}||127.0.0.1||{}||{}||{}||{}||{}||{}||1\n'.format(
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time.time(),
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self.presolver.nameservers[0],
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dns_resp[2],
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domain,
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dnstype,
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dns_resp[4],
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answers.ttl,
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)
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)
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self.vdomain.add((passive_dns_out))
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if self.redis:
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self.redis.sadd('dom_class:cache:{}'.format(domain), passive_dns_out)
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self.redis.expire('dom_class:cache:{}'.format(domain), self.expire_time)
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elif extended:
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self.vdomain.append((domain, dnstype, answers[0]))
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if self.redis:
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self.redis.sadd('dom_class:cache:{}'.format(domain), '{}[^]{}[^]{}'.format(domain, dnstype, answers[0]))
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self.redis.expire('dom_class:cache:{}'.format(domain), self.expire_time)
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else:
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self.vdomain.add((domain))
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if self.redis:
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self.redis.sadd('dom_class:cache:{}'.format(domain), domain)
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self.redis.expire('dom_class:cache:{}'.format(domain), self.expire_time)
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return self.vdomain
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"""ipaddress method extracts from the domain list the valid IPv4 addresses"""
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@ -1,3 +1,4 @@
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IPy
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dnspython
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git+https://github.com/D4-project/BGP-Ranking.git/#egg=pybgpranking&subdirectory=client
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redis
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2
setup.py
2
setup.py
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@ -1,7 +1,7 @@
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from setuptools import setup, find_packages
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setup(
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name="DomainClassifier",
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version="1.0",
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version="1.1",
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packages=find_packages(),
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install_requires=['dnspython', 'IPy', 'pybgpranking'],
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dependency_links=[
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