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# 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.
# Fail2Ban developers
__author__ = "Serg Brester"
__copyright__ = "Copyright (c) 2015 Serg G. Brester (sebres), 2008- Fail2Ban Contributors"
__license__ = "GPL"
from __builtin__ import open as fopen
import unittest
import getpass
import os
import sys
import time
import tempfile
import uuid
try:
from systemd import journal
except ImportError:
journal = None
from ..client import fail2banregex
from ..client.fail2banregex import Fail2banRegex, get_opt_parser, output
from .utils import setUpMyTime, tearDownMyTime, LogCaptureTestCase, logSys
from .utils import CONFIG_DIR
fail2banregex.logSys = logSys
def _test_output(*args):
logSys.info(args[0])
fail2banregex.output = _test_output
TEST_FILES_DIR = os.path.join(os.path.dirname(__file__), "files")
def _Fail2banRegex(*args):
parser = get_opt_parser()
(opts, args) = parser.parse_args(list(args))
return (opts, args, Fail2banRegex(opts))
class Fail2banRegexTest(LogCaptureTestCase):
RE_00 = r"(?:(?:Authentication failure|Failed [-/\w+]+) for(?: [iI](?:llegal|nvalid) user)?|[Ii](?:llegal|nvalid) user|ROOT LOGIN REFUSED) .*(?: from|FROM) "
FILENAME_01 = os.path.join(TEST_FILES_DIR, "testcase01.log")
FILENAME_02 = os.path.join(TEST_FILES_DIR, "testcase02.log")
FILENAME_WRONGCHAR = os.path.join(TEST_FILES_DIR, "testcase-wrong-char.log")
FILTER_SSHD = os.path.join(CONFIG_DIR, 'filter.d', 'sshd.conf')
def setUp(self):
"""Call before every test case."""
LogCaptureTestCase.setUp(self)
setUpMyTime()
def tearDown(self):
"""Call after every test case."""
LogCaptureTestCase.tearDown(self)
tearDownMyTime()
def testWrongRE(self):
(opts, args, fail2banRegex) = _Fail2banRegex(
"test", r".** from $"
)
self.assertRaises(Exception, lambda: fail2banRegex.start(opts, args))
self.assertLogged("Unable to compile regular expression")
def testWrongIngnoreRE(self):
(opts, args, fail2banRegex) = _Fail2banRegex(
"test", r".*? from $", r".**"
)
self.assertRaises(Exception, lambda: fail2banRegex.start(opts, args))
self.assertLogged("Unable to compile regular expression")
def testDirectFound(self):
(opts, args, fail2banRegex) = _Fail2banRegex(
"--print-all-matched", "--print-no-missed",
"Dec 31 11:59:59 [sshd] error: PAM: Authentication failure for kevin from 192.0.2.0",
r"Authentication failure for .*? from $"
)
self.assertTrue(fail2banRegex.start(opts, args))
self.assertLogged('Lines: 1 lines, 0 ignored, 1 matched, 0 missed')
def testDirectNotFound(self):
(opts, args, fail2banRegex) = _Fail2banRegex(
"--print-all-missed",
"Dec 31 11:59:59 [sshd] error: PAM: Authentication failure for kevin from 192.0.2.0",
r"XYZ from $"
)
self.assertTrue(fail2banRegex.start(opts, args))
self.assertLogged('Lines: 1 lines, 0 ignored, 0 matched, 1 missed')
def testDirectIgnored(self):
(opts, args, fail2banRegex) = _Fail2banRegex(
"--print-all-ignored",
"Dec 31 11:59:59 [sshd] error: PAM: Authentication failure for kevin from 192.0.2.0",
r"Authentication failure for .*? from $",
r"kevin from 192.0.2.0$"
)
self.assertTrue(fail2banRegex.start(opts, args))
self.assertLogged('Lines: 1 lines, 1 ignored, 0 matched, 0 missed')
def testDirectRE_1(self):
(opts, args, fail2banRegex) = _Fail2banRegex(
"--print-all-matched",
Fail2banRegexTest.FILENAME_01,
Fail2banRegexTest.RE_00
)
self.assertTrue(fail2banRegex.start(opts, args))
self.assertLogged('Lines: 19 lines, 0 ignored, 13 matched, 6 missed')
self.assertLogged('Error decoding line');
self.assertLogged('Continuing to process line ignoring invalid characters')
self.assertLogged('Dez 31 11:59:59 [sshd] error: PAM: Authentication failure for kevin from 193.168.0.128')
self.assertLogged('Dec 31 11:59:59 [sshd] error: PAM: Authentication failure for kevin from 87.142.124.10')
def testDirectRE_1raw(self):
(opts, args, fail2banRegex) = _Fail2banRegex(
"--print-all-matched", "--raw",
Fail2banRegexTest.FILENAME_01,
Fail2banRegexTest.RE_00
)
self.assertTrue(fail2banRegex.start(opts, args))
self.assertLogged('Lines: 19 lines, 0 ignored, 16 matched, 3 missed')
def testDirectRE_2(self):
(opts, args, fail2banRegex) = _Fail2banRegex(
"--print-all-matched",
Fail2banRegexTest.FILENAME_02,
Fail2banRegexTest.RE_00
)
self.assertTrue(fail2banRegex.start(opts, args))
self.assertLogged('Lines: 13 lines, 0 ignored, 5 matched, 8 missed')
def testVerbose(self):
(opts, args, fail2banRegex) = _Fail2banRegex(
"--verbose", "--print-no-missed",
Fail2banRegexTest.FILENAME_02,
Fail2banRegexTest.RE_00
)
self.assertTrue(fail2banRegex.start(opts, args))
self.assertLogged('Lines: 13 lines, 0 ignored, 5 matched, 8 missed')
self.assertLogged('141.3.81.106 Sun Aug 14 11:53:59 2005')
self.assertLogged('141.3.81.106 Sun Aug 14 11:54:59 2005')
def testWronChar(self):
(opts, args, fail2banRegex) = _Fail2banRegex(
Fail2banRegexTest.FILENAME_WRONGCHAR, Fail2banRegexTest.FILTER_SSHD
)
self.assertTrue(fail2banRegex.start(opts, args))
self.assertLogged('Lines: 4 lines, 0 ignored, 2 matched, 2 missed')
self.assertLogged('Error decoding line')
self.assertLogged('Continuing to process line ignoring invalid characters:')
self.assertLogged('Nov 8 00:16:12 main sshd[32548]: input_userauth_request: invalid user llinco')
self.assertLogged('Nov 8 00:16:12 main sshd[32547]: pam_succeed_if(sshd:auth): error retrieving information about user llinco')
def testWronCharDebuggex(self):
(opts, args, fail2banRegex) = _Fail2banRegex(
"--debuggex", "--print-all-matched",
Fail2banRegexTest.FILENAME_WRONGCHAR, Fail2banRegexTest.FILTER_SSHD
)
self.assertTrue(fail2banRegex.start(opts, args))
self.assertLogged('Lines: 4 lines, 0 ignored, 2 matched, 2 missed')
self.assertLogged('https://')