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131 lines
3.5 KiB
131 lines
3.5 KiB
# 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: 321 $
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__author__ = "Cyril Jaquier"
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__version__ = "$Revision: 321 $"
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__date__ = "$Date: 2006-09-04 21:19:58 +0200 (Mon, 04 Sep 2006) $"
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__copyright__ = "Copyright (c) 2004 Cyril Jaquier"
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__license__ = "GPL"
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import time, logging
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from datetemplate import DateTemplate
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from datestrptime import DateStrptime
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from datetai64n import DateTai64n
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from dateepoch import DateEpoch
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from threading import Lock
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# Gets the instance of the logger.
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logSys = logging.getLogger("fail2ban.filter.datedetector")
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class DateDetector:
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def __init__(self):
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self.lock = Lock()
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self.templates = list()
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self.defTemplate = DateTemplate()
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def addDefaultTemplate(self):
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# standard
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template = DateStrptime()
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template.setName("Month Day Hour:Minute:Second")
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template.setRegex("^\S{3}\s{1,2}\d{1,2} \d{2}:\d{2}:\d{2}")
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template.setPattern("%b %d %H:%M:%S")
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self.templates.append(template)
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# asctime
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template = DateStrptime()
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template.setName("Weekday Month Day Hour:Minute:Second Year")
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template.setRegex("\S{3} \S{3} \d{2} \d{2}:\d{2}:\d{2} \d{4}")
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template.setPattern("%a %b %d %H:%M:%S %Y")
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self.templates.append(template)
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# TAI64N
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template = DateTai64n()
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template.setName("TAI64N")
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self.templates.append(template)
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# Epoch
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template = DateEpoch()
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template.setName("Epoch")
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self.templates.append(template)
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def setDefaultRegex(self, value):
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self.defTemplate.setRegex(value)
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def getDefaultRegex(self):
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return self.defTemplate.getRegex()
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def setDefaultPattern(self, value):
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self.defTemplate.setPattern(value)
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def getDefaultPattern(self):
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return self.defTemplate.getPattern()
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def matchTime(self, line):
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if self.defTemplate.isValid():
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return self.defTemplate.matchDate(line)
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else:
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self.lock.acquire()
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for template in self.templates:
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match = template.matchDate(line)
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if match <> None:
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self.lock.release()
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return match
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self.lock.release()
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return None
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def getTime(self, line):
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if self.defTemplate.isValid():
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try:
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date = self.defTemplate.getDate(line)
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return date
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except ValueError:
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return None
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else:
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self.lock.acquire()
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for template in self.templates:
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try:
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date = template.getDate(line)
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if date == None:
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continue
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template.incHits()
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self.lock.release()
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return date
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except ValueError:
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pass
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self.lock.release()
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return None
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def getUnixTime(self, line):
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date = self.getTime(line)
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if date == None:
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return None
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else:
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return time.mktime(date)
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##
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# Sort the template lists using the hits score. This method is not called
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# in this object and thus should be called from time to time.
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def sortTemplate(self):
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self.lock.acquire()
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logSys.debug("Sorting the template list")
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self.templates.sort(cmp = lambda x, y: cmp(x.getHits(), y.getHits()),
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reverse=True)
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self.lock.release()
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