mirror of https://github.com/fail2ban/fail2ban
74 lines
1.9 KiB
Python
74 lines
1.9 KiB
Python
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# This file is part of Fail2Ban.
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#
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# Fail2Ban is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# Fail2Ban is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Fail2Ban; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# Author: Cyril Jaquier
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#
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# $Revision$
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__author__ = "Cyril Jaquier"
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__version__ = "$Revision$"
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__date__ = "$Date$"
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__copyright__ = "Copyright (c) 2004 Cyril Jaquier"
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__license__ = "GPL"
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import os, re, socket
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def dnsToIp(dns):
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""" Convert a DNS into an IP address using the Python socket module.
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Thanks to Kevin Drapel.
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"""
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try:
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return socket.gethostbyname_ex(dns)[2]
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except socket.gaierror:
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return list()
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def textToDns(text):
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""" Search for possible DNS in an arbitrary text.
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Thanks to Tom Pike.
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"""
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match = re.findall("(?:(?:\w|-)+\.){2,}\w+", text)
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if match:
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return match
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else:
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return []
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def searchIP(text):
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""" Search if an IP address if directly available and return
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it.
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"""
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match = re.findall("(?:\d{1,3}\.){3}\d{1,3}", text)
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if match:
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return match
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else:
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return []
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def textToIp(text):
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""" Return the IP of DNS found in a given text.
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"""
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ipList = list()
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# Search for plain IP
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plainIP = searchIP(text)
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for element in plainIP:
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ipList.append(element)
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if not ipList:
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# Try to get IP from possible DNS
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dnsList = textToDns(text)
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for element in dnsList:
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dns = dnsToIp(element)
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for e in dns:
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ipList.append(e)
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return ipList
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