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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.
# Author: Steven Hiscocks
#
__author__ = "Steven Hiscocks"
__copyright__ = "Copyright (c) 2013 Steven Hiscocks"
__license__ = "GPL"
import os
import sys
import tempfile
import threading
import time
import unittest
from .utils import LogCaptureTestCase
from .. import protocol
from ..server.asyncserver import asyncore, RequestHandler, loop, AsyncServer, AsyncServerException
from ..server.utils import Utils
from ..client.csocket import CSocket
from .utils import LogCaptureTestCase
def TestMsgError(*args):
raise Exception('test unpickle error')
class TestMsg(object):
def __init__(self, unpickle=(TestMsgError, ())):
self.unpickle = unpickle
def __reduce__(self):
return self.unpickle
class Socket(LogCaptureTestCase):
def setUp(self):
"""Call before every test case."""
LogCaptureTestCase.setUp(self)
super(Socket, self).setUp()
self.server = AsyncServer(self)
sock_fd, sock_name = tempfile.mkstemp('fail2ban.sock', 'f2b-socket')
os.close(sock_fd)
os.remove(sock_name)
self.sock_name = sock_name
self.serverThread = None
def tearDown(self):
"""Call after every test case."""
if self.serverThread:
self.server.stop(); # stop if not already stopped
self._stopServerThread()
LogCaptureTestCase.tearDown(self)
@staticmethod
def proceed(message):
"""Test transmitter proceed method which just returns first arg"""
return message
def _createServerThread(self, force=False):
# start in separate thread :
self.serverThread = serverThread = threading.Thread(
target=self.server.start, args=(self.sock_name, force))
serverThread.daemon = True
serverThread.start()
self.assertTrue(Utils.wait_for(self.server.isActive, unittest.F2B.maxWaitTime(10)))
return serverThread
def _stopServerThread(self):
serverThread = self.serverThread
# wait for end of thread :
Utils.wait_for(lambda: not serverThread.is_alive()
or serverThread.join(Utils.DEFAULT_SLEEP_TIME), unittest.F2B.maxWaitTime(10))
self.serverThread = None
def testStopPerCloseUnexpected(self):
# start in separate thread :
serverThread = self._createServerThread()
# unexpected stop directly after start:
self.server.close()
# wait for end of thread :
self._stopServerThread()
self.assertFalse(serverThread.is_alive())
# clean :
self.server.stop()
self.assertFalse(self.server.isActive())
self.assertFalse(os.path.exists(self.sock_name))
def _serverSocket(self):
try:
return CSocket(self.sock_name)
except Exception as e:
return None
def testSocket(self):
# start in separate thread :
serverThread = self._createServerThread()
client = Utils.wait_for(self._serverSocket, 2)
testMessage = ["A", "test", "message"]
self.assertEqual(client.send(testMessage), testMessage)
# test wrong message:
self.assertEqual(client.send([[TestMsg()]]), 'ERROR: test unpickle error')
self.assertLogged("PROTO-error: load message failed:", "test unpickle error", all=True)
# test good message again:
self.assertEqual(client.send(testMessage), testMessage)
# test close message
client.close()
# 2nd close does nothing
client.close()
# force shutdown:
self.server.stop_communication()
# test send again (should get in shutdown message):
client = Utils.wait_for(self._serverSocket, 2)
self.assertEqual(client.send(testMessage), ['SHUTDOWN'])
self.server.stop()
# wait for end of thread :
self._stopServerThread()
self.assertFalse(serverThread.is_alive())
self.assertFalse(self.server.isActive())
self.assertFalse(os.path.exists(self.sock_name))
def testSocketConnectBroken(self):
# start in separate thread :
serverThread = self._createServerThread()
client = Utils.wait_for(self._serverSocket, 2)
# unexpected stop during message body:
testMessage = ["A", "test", "message", [protocol.CSPROTO.END]]
org_handler = RequestHandler.found_terminator
try:
RequestHandler.found_terminator = lambda self: self.close()
self.assertRaisesRegex(Exception, r"reset by peer|Broken pipe",
lambda: client.send(testMessage, timeout=unittest.F2B.maxWaitTime(10)))
finally:
RequestHandler.found_terminator = org_handler
def testStopByCommunicate(self):
# start in separate thread :
serverThread = self._createServerThread()
client = Utils.wait_for(self._serverSocket, 2)
testMessage = ["A", "test", "message"]
self.assertEqual(client.send(testMessage), testMessage)
org_handler = RequestHandler.found_terminator
try:
RequestHandler.found_terminator = lambda self: TestMsgError()
#self.assertRaisesRegexp(Exception, r"reset by peer|Broken pipe", client.send, testMessage)
self.assertEqual(client.send(testMessage), 'ERROR: test unpickle error')
finally:
RequestHandler.found_terminator = org_handler
# check errors were logged:
self.assertLogged("Unexpected communication error", "test unpickle error", all=True)
self.server.stop()
# wait for end of thread :
self._stopServerThread()
self.assertFalse(serverThread.is_alive())
def testLoopErrors(self):
# replace poll handler to produce error in loop-cycle:
org_poll = asyncore.poll
err = {'cntr': 0}
def _produce_error(*args):
err['cntr'] += 1
if err['cntr'] < 50:
raise RuntimeError('test errors in poll')
return org_poll(*args)
try:
asyncore.poll = _produce_error
serverThread = self._createServerThread()
# wait all-cases processed:
self.assertTrue(Utils.wait_for(lambda: err['cntr'] > 50, unittest.F2B.maxWaitTime(10)))
finally:
# restore:
asyncore.poll = org_poll
# check errors were logged:
self.assertLogged("Server connection was closed: test errors in poll",
"Too many errors - stop logging connection errors", all=True)
def testSocketForce(self):
open(self.sock_name, 'w').close() # Create sock file
# Try to start without force
self.assertRaises(
AsyncServerException, self.server.start, self.sock_name, False)
# Try again with force set
serverThread = self._createServerThread(True)
self.server.stop()
# wait for end of thread :
self._stopServerThread()
self.assertFalse(serverThread.is_alive())
self.assertFalse(self.server.isActive())
self.assertFalse(os.path.exists(self.sock_name))
class ClientMisc(LogCaptureTestCase):
def testErrorsInLoop(self):
phase = {'cntr': 0}
def _active():
return phase['cntr'] < 40
def _poll(*args):
phase['cntr'] += 1
raise Exception('test *%d*' % phase['cntr'])
# test errors "catched" and logged:
loop(_active, use_poll=_poll)
self.assertLogged("test *1*", "test *10*", "test *20*", all=True)
self.assertLogged("Too many errors - stop logging connection errors")
self.assertNotLogged("test *21*", "test *22*", "test *23*", all=True)
def testPrintFormattedAndWiki(self):
# redirect stdout to devnull
saved_stdout = sys.stdout
sys.stdout = open(os.devnull, 'w')
try:
protocol.printFormatted()
protocol.printWiki()
finally:
# restore stdout
sys.stdout = saved_stdout
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