iwla/plugins/post_analysis/reverse_dns.py

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# -*- coding: utf-8 -*-
#
# Copyright Grégory Soutadé 2015
# This file is part of iwla
# iwla is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# iwla is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with iwla. If not, see <http://www.gnu.org/licenses/>.
#
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import socket
from iwla import IWLA
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from iplugin import IPlugin
"""
Post analysis hook
Replace IP by reverse DNS names
Plugin requirements :
None
Conf values needed :
reverse_dns_timeout*
Output files :
None
Statistics creation :
None
Statistics update :
valid_visitors:
remote_addr
dns_name_replaced
dns_analyzed
Statistics deletion :
None
"""
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class IWLAPostAnalysisReverseDNS(IPlugin):
DEFAULT_DNS_TIMEOUT = 0.5
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def __init__(self, iwla):
super(IWLAPostAnalysisReverseDNS, self).__init__(iwla)
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self.API_VERSION = 1
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def load(self):
timeout = self.iwla.getConfValue('reverse_dns_timeout',
IWLAPostAnalysisReverseDNS.DEFAULT_DNS_TIMEOUT)
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socket.setdefaulttimeout(timeout)
return True
def hook(self):
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hits = self.iwla.getCurrentVisits()
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for (k, hit) in hits.items():
if hit.get('dns_analysed', False): continue
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if not hit['feed_parser'] and\
not self.iwla.isValidVisitor(hit):
continue
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try:
name, _, _ = socket.gethostbyaddr(k)
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hit['remote_addr'] = name.lower()
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hit['dns_name_replaced'] = True
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except:
pass
finally:
hit['dns_analysed'] = True