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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: 690 $
__author__ = "Cyril Jaquier"
__version__ = "$Revision: 690 $"
__date__ = "$Date: 2008-05-12 10:34:42 +0200 (Mon, 12 May 2008) $"
__copyright__ = "Copyright (c) 2004 Cyril Jaquier"
__license__ = "GPL"
import logging, re, glob
from configreader import ConfigReader
from filterreader import FilterReader
from actionreader import ActionReader
# Gets the instance of the logger.
logSys = logging.getLogger("fail2ban.client.config")
class JailReader(ConfigReader):
actionCRE = re.compile("^((?:\w|-|_|\.)+)(?:\[(.*)\])?$")
def __init__(self, name):
ConfigReader.__init__(self)
self.__name = name
self.__filter = None
self.__actions = list()
def setName(self, value):
self.__name = value
def getName(self):
return self.__name
def read(self):
ConfigReader.read(self, "jail")
def isEnabled(self):
return self.__opts["enabled"]
def getOptions(self):
opts = [["bool", "enabled", "false"],
["string", "logpath", "/var/log/messages"],
["string", "backend", "auto"],
["int", "maxretry", 3],
["int", "findtime", 600],
["int", "bantime", 600],
["string", "failregex", None],
["string", "ignoreregex", None],
["string", "ignoreip", None],
["string", "filter", ""],
["string", "action", ""]]
self.__opts = ConfigReader.getOptions(self, self.__name, opts)
if self.isEnabled():
# Read filter
self.__filter = FilterReader(self.__opts["filter"], self.__name)
ret = self.__filter.read()
if ret:
self.__filter.getOptions(self.__opts)
else:
logSys.error("Unable to read the filter")
return False
# Read action
for act in self.__opts["action"].split('\n'):
try:
splitAct = JailReader.splitAction(act)
action = ActionReader(splitAct, self.__name)
ret = action.read()
if ret:
action.getOptions(self.__opts)
self.__actions.append(action)
else:
raise AttributeError("Unable to read action")
except Exception, e:
logSys.error("Error in action definition " + act)
logSys.debug(e)
return False
return True
def convert(self):
stream = []
for opt in self.__opts:
if opt == "logpath":
for path in self.__opts[opt].split("\n"):
pathList = glob.glob(path)
if len(pathList) == 0:
logSys.error("No file found for " + path)
for p in pathList:
stream.append(["set", self.__name, "addlogpath", p])
elif opt == "backend":
backend = self.__opts[opt]
elif opt == "maxretry":
stream.append(["set", self.__name, "maxretry", self.__opts[opt]])
elif opt == "ignoreip":
for ip in self.__opts[opt].split():
# Do not send a command if the rule is empty.
if ip != '':
stream.append(["set", self.__name, "addignoreip", ip])
elif opt == "findtime":
stream.append(["set", self.__name, "findtime", self.__opts[opt]])
elif opt == "bantime":
stream.append(["set", self.__name, "bantime", self.__opts[opt]])
elif opt == "failregex":
stream.append(["set", self.__name, "failregex", self.__opts[opt]])
elif opt == "ignoreregex":
for regex in self.__opts[opt].split('\n'):
# Do not send a command if the rule is empty.
if regex != '':
stream.append(["set", self.__name, "addignoreregex", regex])
stream.extend(self.__filter.convert())
for action in self.__actions:
stream.extend(action.convert())
stream.insert(0, ["add", self.__name, backend])
return stream
#@staticmethod
def splitAction(action):
m = JailReader.actionCRE.match(action)
d = dict()
if not m.group(2) == None:
# Huge bad hack :( This method really sucks. TODO Reimplement it.
actions = ""
escapeChar = None
allowComma = False
for c in m.group(2):
if c in ('"', "'") and not allowComma:
# Start
escapeChar = c
allowComma = True
elif c == escapeChar:
# End
escapeChar = None
allowComma = False
else:
if c == ',' and allowComma:
actions += "<COMMA>"
else:
actions += c
# Split using ,
actionsSplit = actions.split(',')
# Replace the tag <COMMA> with ,
actionsSplit = [n.replace("<COMMA>", ',') for n in actionsSplit]
for param in actionsSplit:
p = param.split('=')
try:
d[p[0].strip()] = p[1].strip()
except IndexError:
logSys.error("Invalid argument %s in '%s'" % (p, m.group(2)))
return [m.group(1), d]
splitAction = staticmethod(splitAction)
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