| # Copyright 2014-2015, Tresys Technology, LLC |
| # |
| # This file is part of SETools. |
| # |
| # SETools is free software: you can redistribute it and/or modify |
| # it under the terms of the GNU Lesser General Public License as |
| # published by the Free Software Foundation, either version 2.1 of |
| # the License, or (at your option) any later version. |
| # |
| # SETools 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 Lesser General Public License for more details. |
| # |
| # You should have received a copy of the GNU Lesser General Public |
| # License along with SETools. If not, see |
| # <http://www.gnu.org/licenses/>. |
| # |
| import logging |
| |
| |
| class PolicyQuery(object): |
| |
| """Base class for SELinux policy queries.""" |
| |
| def __init__(self, policy, **kwargs): |
| self.policy = policy |
| |
| # keys are sorted in reverse order so regex settings |
| # are set before the criteria, e.g. name_regex |
| # is set before name. This ensures correct behavior |
| # since the criteria descriptors are sensitve to |
| # regex settings. |
| for name in sorted(kwargs.keys(), reverse=True): |
| attr = getattr(self, name, None) # None is not callable |
| if callable(attr): |
| raise ValueError("Keyword parameter {0} conflicts with a callable.".format(name)) |
| |
| setattr(self, name, kwargs[name]) |
| |
| def results(self): |
| """ |
| Generator which returns the matches for the query. This method |
| should be overridden by subclasses. |
| """ |
| raise NotImplementedError |
