| # Copyright 2014, 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 . import exception |
| from . import qpol |
| from . import symbol |
| from . import context |
| |
| |
| def initialsid_factory(policy, name): |
| """Factory function for creating initial sid objects.""" |
| |
| if isinstance(name, InitialSID): |
| assert name.policy == policy |
| return name |
| elif isinstance(name, qpol.qpol_isid_t): |
| return InitialSID(policy, name) |
| |
| try: |
| return InitialSID(policy, qpol.qpol_isid_t(policy, name)) |
| except ValueError: |
| raise exception.InvalidInitialSid("{0} is not a valid initial sid".format(name)) |
| |
| |
| class InitialSID(symbol.PolicySymbol): |
| |
| """An initial SID statement.""" |
| |
| @property |
| def context(self): |
| """The context for this initial SID.""" |
| return context.context_factory(self.policy, self.qpol_symbol.context(self.policy)) |
| |
| def statement(self): |
| return "sid {0} {0.context}".format(self) |