| # Copyright 2016, 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/>. |
| # |
| from collections import namedtuple |
| |
| from .descriptors import DiffResultDescriptor |
| from .difference import Difference |
| |
| |
| modified_properties_record = namedtuple("modified_property", ["property", "added", "removed"]) |
| |
| |
| class PropertiesDifference(Difference): |
| |
| """ |
| Determine the difference in policy properties |
| (unknown permissions, MLS, etc.) between two policies. |
| """ |
| |
| modified_properties = DiffResultDescriptor("diff_properties") |
| |
| def diff_properties(self): |
| self.modified_properties = [] |
| |
| if self.left_policy.handle_unknown != self.right_policy.handle_unknown: |
| self.modified_properties.append( |
| modified_properties_record("handle_unknown", |
| self.right_policy.handle_unknown, |
| self.left_policy.handle_unknown)) |
| |
| if self.left_policy.mls != self.right_policy.mls: |
| self.modified_properties.append( |
| modified_properties_record("MLS", |
| self.right_policy.mls, |
| self.left_policy.mls)) |
| |
| if self.left_policy.version != self.right_policy.version: |
| self.modified_properties.append( |
| modified_properties_record("version", |
| self.right_policy.version, |
| self.left_policy.version)) |
| |
| # |
| # Internal functions |
| # |
| def _reset_diff(self): |
| """Reset diff results on policy changes.""" |
| self.log.debug("Resetting property differences") |
| self.modified_properties = None |
