| Current Path : /usr/share/fail2ban/server/ |
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| Current File : //usr/share/fail2ban/server/datedetector.py |
# emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: t -*-
# vi: set ft=python sts=4 ts=4 sw=4 noet :
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
__author__ = "Cyril Jaquier and Fail2Ban Contributors"
__copyright__ = "Copyright (c) 2004 Cyril Jaquier"
__license__ = "GPL"
import sys, time, logging
from datetemplate import DateStrptime, DateTai64n, DateEpoch, DateISO8601
from threading import Lock
# Gets the instance of the logger.
logSys = logging.getLogger("fail2ban.filter.datedetector")
class DateDetector:
def __init__(self):
self.__lock = Lock()
self.__templates = list()
self.__known_names = set()
def _appendTemplate(self, template):
name = template.getName()
if name in self.__known_names:
raise ValueError("There is already a template with name %s" % name)
self.__known_names.add(name)
self.__templates.append(template)
def addDefaultTemplate(self):
self.__lock.acquire()
try:
if sys.version_info >= (2, 5): # because of '%.f'
# asctime with subsecond
template = DateStrptime()
template.setName("WEEKDAY MONTH Day Hour:Minute:Second[.subsecond] Year")
template.setRegex("\S{3} \S{3}\s{1,2}\d{1,2} \d{2}:\d{2}:\d{2}\.\d+ \d{4}")
template.setPattern("%a %b %d %H:%M:%S.%f %Y")
self._appendTemplate(template)
# asctime without no subsecond
template = DateStrptime()
template.setName("WEEKDAY MONTH Day Hour:Minute:Second Year")
template.setRegex("\S{3} \S{3}\s{1,2}\d{1,2} \d{2}:\d{2}:\d{2} \d{4}")
template.setPattern("%a %b %d %H:%M:%S %Y")
self._appendTemplate(template)
# asctime without year
template = DateStrptime()
template.setName("WEEKDAY MONTH Day Hour:Minute:Second")
template.setRegex("\S{3} \S{3}\s{1,2}\d{1,2} \d{2}:\d{2}:\d{2}")
template.setPattern("%a %b %d %H:%M:%S")
self._appendTemplate(template)
# standard - most loose from above 3 so by default follows after
template = DateStrptime()
template.setName("MONTH Day Hour:Minute:Second")
template.setRegex("\S{3}\s{1,2}\d{1,2} \d{2}:\d{2}:\d{2}")
template.setPattern("%b %d %H:%M:%S")
self._appendTemplate(template)
# simple date
template = DateStrptime()
template.setName("Year/Month/Day Hour:Minute:Second")
template.setRegex("\d{4}/\d{2}/\d{2} \d{2}:\d{2}:\d{2}")
template.setPattern("%Y/%m/%d %H:%M:%S")
self._appendTemplate(template)
# simple date too (from x11vnc)
template = DateStrptime()
template.setName("Day/Month/Year Hour:Minute:Second")
template.setRegex("\d{2}/\d{2}/\d{4} \d{2}:\d{2}:\d{2}")
template.setPattern("%d/%m/%Y %H:%M:%S")
self._appendTemplate(template)
# previous one but with year given by 2 digits
# (See http://bugs.debian.org/537610)
template = DateStrptime()
template.setName("Day/Month/Year2 Hour:Minute:Second")
template.setRegex("\d{2}/\d{2}/\d{2} \d{2}:\d{2}:\d{2}")
template.setPattern("%d/%m/%y %H:%M:%S")
self._appendTemplate(template)
# Apache format [31/Oct/2006:09:22:55 -0000]
template = DateStrptime()
template.setName("Day/MONTH/Year:Hour:Minute:Second")
template.setRegex("\d{2}/\S{3}/\d{4}:\d{2}:\d{2}:\d{2}")
template.setPattern("%d/%b/%Y:%H:%M:%S")
self._appendTemplate(template)
# CPanel 05/20/2008:01:57:39
template = DateStrptime()
template.setName("Month/Day/Year:Hour:Minute:Second")
template.setRegex("\d{2}/\d{2}/\d{4}:\d{2}:\d{2}:\d{2}")
template.setPattern("%m/%d/%Y:%H:%M:%S")
self._appendTemplate(template)
if sys.version_info >= (2, 5): # because of '%.f'
# proftpd 2013-11-16 21:43:03,296
# So like Exim below but with ,subsecond
template = DateStrptime()
template.setName("Year-Month-Day Hour:Minute:Second[,subsecond]")
template.setRegex("\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2},\d+")
template.setPattern("%Y-%m-%d %H:%M:%S,%f")
self._appendTemplate(template)
# Exim 2006-12-21 06:43:20
template = DateStrptime()
template.setName("Year-Month-Day Hour:Minute:Second")
template.setRegex("\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}")
template.setPattern("%Y-%m-%d %H:%M:%S")
self._appendTemplate(template)
# custom for syslog-ng 2006.12.21 06:43:20
template = DateStrptime()
template.setName("Year.Month.Day Hour:Minute:Second")
template.setRegex("\d{4}.\d{2}.\d{2} \d{2}:\d{2}:\d{2}")
template.setPattern("%Y.%m.%d %H:%M:%S")
self._appendTemplate(template)
# named 26-Jul-2007 15:20:52.252
template = DateStrptime()
template.setName("Day-MONTH-Year Hour:Minute:Second[.Millisecond]")
template.setRegex("\d{2}-\S{3}-\d{4} \d{2}:\d{2}:\d{2}")
template.setPattern("%d-%b-%Y %H:%M:%S")
self._appendTemplate(template)
# 17-07-2008 17:23:25
template = DateStrptime()
template.setName("Day-Month-Year Hour:Minute:Second")
template.setRegex("\d{2}-\d{2}-\d{4} \d{2}:\d{2}:\d{2}")
template.setPattern("%d-%m-%Y %H:%M:%S")
self._appendTemplate(template)
# 01-27-2012 16:22:44.252
template = DateStrptime()
template.setName("Month-Day-Year Hour:Minute:Second[.Millisecond]")
template.setRegex("\d{2}-\d{2}-\d{4} \d{2}:\d{2}:\d{2}")
template.setPattern("%m-%d-%Y %H:%M:%S")
self._appendTemplate(template)
# TAI64N
template = DateTai64n()
template.setName("TAI64N")
self._appendTemplate(template)
# Epoch
template = DateEpoch()
template.setName("Epoch")
self._appendTemplate(template)
# ISO 8601
template = DateISO8601()
template.setName("ISO 8601")
self._appendTemplate(template)
# Only time information in the log
template = DateStrptime()
template.setName("Hour:Minute:Second")
template.setRegex("^\d{2}:\d{2}:\d{2}")
template.setPattern("%H:%M:%S")
self._appendTemplate(template)
# <09/16/08@05:03:30>
template = DateStrptime()
template.setName("<Month/Day/Year@Hour:Minute:Second>")
template.setRegex("^<\d{2}/\d{2}/\d{2}@\d{2}:\d{2}:\d{2}>")
template.setPattern("<%m/%d/%y@%H:%M:%S>")
self._appendTemplate(template)
# MySQL: 130322 11:46:11
template = DateStrptime()
template.setName("YearMonthDay Hour:Minute:Second")
template.setRegex("^\d{2}\d{2}\d{2} +\d{1,2}:\d{2}:\d{2}")
template.setPattern("%y%m%d %H:%M:%S")
self._appendTemplate(template)
# ASSP: Apr-27-13 02:33:06
template = DateStrptime()
template.setName("Month-Day-Year Hour:Minute:Second")
template.setRegex("^[a-zA-Z]{3}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}")
template.setPattern("%b-%d-%y %H:%M:%S")
self._appendTemplate(template)
finally:
self.__lock.release()
def getTemplates(self):
return self.__templates
def matchTime(self, line):
self.__lock.acquire()
try:
for template in self.__templates:
match = template.matchDate(line)
if not match is None:
logSys.debug("Matched time template %s" % template.getName())
template.incHits()
return match
return None
finally:
self.__lock.release()
def getTime(self, line):
self.__lock.acquire()
try:
for template in self.__templates:
try:
date = template.getDate(line)
if date is None:
continue
logSys.debug("Got time using template %s" % template.getName())
return date
except ValueError:
pass
return None
finally:
self.__lock.release()
def getUnixTime(self, line):
date = self.getTime(line)
return date and time.mktime(date)
##
# Sort the template lists using the hits score. This method is not called
# in this object and thus should be called from time to time.
def sortTemplate(self):
self.__lock.acquire()
try:
logSys.debug("Sorting the template list")
self.__templates.sort(lambda x, y: cmp(x.getHits(), y.getHits()), reverse=True)
t = self.__templates[0]
logSys.debug("Winning template: %s with %d hits" % (t.getName(), t.getHits()))
finally:
self.__lock.release()