#!/usr/bin/env python2.7

# Copyright (c) 2014-2016 Marcello Salvati
#
# This program 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 3 of the
# License, or (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
#

import threading

from netfilterqueue import NetfilterQueue

class Nfqueue():

	def __init__(self, queue_number):
		self.queue_number = queue_number
		self.nfqueue = NetfilterQueue()

	def start(self):
		t = threading.Thread(name='nfqueue', target=self.bind, args=())
		t.setDaemon(True)
		t.start()

	def bind(self):
		self.nfqueue.bind(self.queue_number, self.callback)
		self.nfqueue.run()

	def stop(self):
		try:
			self.nfqueue.unbind()
		except:
			pass

	def callback(self, payload):
		payload.accept()