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python3.6
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fail2ban
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client
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csocket.py
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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)