mirror of https://github.com/fail2ban/fail2ban
132 lines
3.1 KiB
Python
132 lines
3.1 KiB
Python
# 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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from faildata import FailData
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from failticket import FailTicket
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from threading import Lock
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import time, logging
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# Gets the instance of the logger.
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logSys = logging.getLogger("fail2ban.filter")
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class FailManager:
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def __init__(self):
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self.__lock = Lock()
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self.__failList = dict()
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self.__maxRetry = 3
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self.__maxTime = 600
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self.__failTotal = 0
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def setFailTotal(self, value):
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self.__lock.acquire()
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self.__failTotal = value
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self.__lock.release()
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def getFailTotal(self):
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try:
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self.__lock.acquire()
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return self.__failTotal
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finally:
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self.__lock.release()
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def setMaxRetry(self, value):
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self.__lock.acquire()
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self.__maxRetry = value
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self.__lock.release()
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def getMaxRetry(self):
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try:
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self.__lock.acquire()
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return self.__maxRetry
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finally:
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self.__lock.release()
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def setMaxTime(self, value):
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self.__lock.acquire()
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self.__maxTime = value
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self.__lock.release()
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def getMaxTime(self):
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try:
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self.__lock.acquire()
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return self.__maxTime
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finally:
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self.__lock.release()
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def addFailure(self, ticket):
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self.__lock.acquire()
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ip = ticket.getIP()
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unixTime = ticket.getTime()
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if self.__failList.has_key(ip):
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fData = self.__failList[ip]
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fData.inc()
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fData.setLastTime(unixTime)
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else:
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fData = FailData()
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fData.inc()
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fData.setLastTime(unixTime)
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self.__failList[ip] = fData
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self.__failTotal += 1
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self.__lock.release()
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def size(self):
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try:
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self.__lock.acquire()
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return len(self.__failList)
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finally:
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self.__lock.release()
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def cleanup(self, time):
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self.__lock.acquire()
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tmp = self.__failList.copy()
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for item in tmp:
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if tmp[item].getLastTime() < time - self.__maxTime:
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self.__delFailure(item)
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self.__lock.release()
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def __delFailure(self, ip):
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if self.__failList.has_key(ip):
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del self.__failList[ip]
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def toBan(self):
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try:
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self.__lock.acquire()
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for ip in self.__failList:
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data = self.__failList[ip]
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if data.getRetry() >= self.__maxRetry:
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self.__delFailure(ip)
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# Create a FailTicket from BanData
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failTicket = FailTicket(ip, data.getLastTime())
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failTicket.setAttempt(data.getRetry())
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return failTicket
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raise FailManagerEmpty
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finally:
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self.__lock.release()
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class FailManagerEmpty(Exception):
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pass
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