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# -*- coding: utf-8 -*-
#
# Copyright (C) 2015-2016 Red Hat, Inc.
#
# Authors:
# Thomas Woerner <twoerner@redhat.com>
#
# 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 2 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, see <http://www.gnu.org/licenses/>.
#
"""helper backend"""
__all__ = [ "FirewallHelper" ]
from firewall import errors
from firewall.errors import FirewallError
class FirewallHelper(object):
def __init__(self, fw):
self._fw = fw
self._helpers = { }
def __repr__(self):
return '%s(%r)' % (self.__class__, self._helpers)
# helpers
def cleanup(self):
self._helpers.clear()
def check_helper(self, name):
if name not in self.get_helpers():
raise FirewallError(errors.INVALID_HELPER, name)
def query_helper(self, name):
return name in self.get_helpers()
def get_helpers(self):
return sorted(self._helpers.keys())
def has_helpers(self):
return len(self._helpers) > 0
def get_helper(self, name):
self.check_helper(name)
return self._helpers[name]
def add_helper(self, obj):
self._helpers[obj.name] = obj
def remove_helper(self, name):
if name not in self._helpers:
raise FirewallError(errors.INVALID_HELPER, name)
del self._helpers[name]