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# This file is part of Fail2Ban.
#
# Fail2Ban 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 2 of the License, or
# (at your option) any later version.
#
# Fail2Ban 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 Fail2Ban; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# Author: Cyril Jaquier
#
# $Revision: 638 $
__author__ = "Cyril Jaquier"
__version__ = "$Revision: 638 $"
__date__ = "$Date: 2007-12-17 21:00:36 +0100 (Mon, 17 Dec 2007) $"
__copyright__ = "Copyright (c) 2004 Cyril Jaquier"
__license__ = "GPL"
from faildata import FailData
from ticket import FailTicket
from threading import Lock
import logging
# Gets the instance of the logger.
logSys = logging.getLogger("fail2ban.filter")
class FailManager:
def __init__(self):
self.__lock = Lock()
self.__failList = dict()
self.__maxRetry = 3
self.__maxTime = 600
self.__failTotal = 0
def setFailTotal(self, value):
try:
self.__lock.acquire()
self.__failTotal = value
finally:
self.__lock.release()
def getFailTotal(self):
try:
self.__lock.acquire()
return self.__failTotal
finally:
self.__lock.release()
def setMaxRetry(self, value):
try:
self.__lock.acquire()
self.__maxRetry = value
finally:
self.__lock.release()
def getMaxRetry(self):
try:
self.__lock.acquire()
return self.__maxRetry
finally:
self.__lock.release()
def setMaxTime(self, value):
try:
self.__lock.acquire()
self.__maxTime = value
finally:
self.__lock.release()
def getMaxTime(self):
try:
self.__lock.acquire()
return self.__maxTime
finally:
self.__lock.release()
def addFailure(self, ticket):
try:
self.__lock.acquire()
ip = ticket.getIP()
unixTime = ticket.getTime()
if self.__failList.has_key(ip):
fData = self.__failList[ip]
fData.inc()
fData.setLastTime(unixTime)
else:
fData = FailData()
fData.inc()
fData.setLastTime(unixTime)
self.__failList[ip] = fData
self.__failTotal += 1
finally:
self.__lock.release()
def size(self):
try:
self.__lock.acquire()
return len(self.__failList)
finally:
self.__lock.release()
def cleanup(self, time):
try:
self.__lock.acquire()
tmp = self.__failList.copy()
for item in tmp:
if tmp[item].getLastTime() < time - self.__maxTime:
self.__delFailure(item)
finally:
self.__lock.release()
def __delFailure(self, ip):
if self.__failList.has_key(ip):
del self.__failList[ip]
def toBan(self):
try:
self.__lock.acquire()
for ip in self.__failList:
data = self.__failList[ip]
if data.getRetry() >= self.__maxRetry:
self.__delFailure(ip)
# Create a FailTicket from BanData
failTicket = FailTicket(ip, data.getLastTime())
failTicket.setAttempt(data.getRetry())
return failTicket
raise FailManagerEmpty
finally:
self.__lock.release()
class FailManagerEmpty(Exception):
pass
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