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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: Cyril Jaquier
#
__author__ = "Cyril Jaquier"
__copyright__ = "Copyright (c) 2004 Cyril Jaquier"
__license__ = "GPL"
#from cPickle import dumps, loads, HIGHEST_PROTOCOL
from pickle import dumps, loads, HIGHEST_PROTOCOL
from ..protocol import CSPROTO
import socket
import sys
class CSocket:
def __init__(self, sock="/var/run/fail2ban/fail2ban.sock", timeout=-1):
# Create an INET, STREAMing socket
#self.csock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.__csock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
self.__deftout = self.__csock.gettimeout()
if timeout != -1:
self.settimeout(timeout)
#self.csock.connect(("localhost", 2222))
self.__csock.connect(sock)
def __del__(self):
self.close()
def send(self, msg, nonblocking=False, timeout=None):
# Convert every list member to string
obj = dumps(list(map(CSocket.convert, msg)), HIGHEST_PROTOCOL)
self.__csock.send(obj)
self.__csock.send(CSPROTO.END)
return self.receive(self.__csock, nonblocking, timeout)
def settimeout(self, timeout):
self.__csock.settimeout(timeout if timeout != -1 else self.__deftout)
def close(self):
if not self.__csock:
return
try:
self.__csock.sendall(CSPROTO.CLOSE + CSPROTO.END)
self.__csock.shutdown(socket.SHUT_RDWR)
except socket.error: # pragma: no cover - normally unreachable
pass
try:
self.__csock.close()
except socket.error: # pragma: no cover - normally unreachable
pass
self.__csock = None
@staticmethod
def convert(m):
"""Convert every "unexpected" member of message to string"""
if isinstance(m, (str, bool, int, float, list, dict, set)):
return m
else: # pragma: no cover
return str(m)
@staticmethod
def receive(sock, nonblocking=False, timeout=None):
msg = CSPROTO.EMPTY
if nonblocking: sock.setblocking(0)
if timeout: sock.settimeout(timeout)
bufsize = 1024
while msg.rfind(CSPROTO.END, -32) == -1:
chunk = sock.recv(bufsize)
if not len(chunk):
raise socket.error(104, 'Connection reset by peer')
if chunk == CSPROTO.END: break
msg = msg + chunk
if bufsize < 32768: bufsize <<= 1
return loads(msg)
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