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# 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 import re from .descriptors import CriteriaSetDescriptor from .mixins import MatchName from .query import PolicyQuery from .util import match_regex_or_set class RoleQuery(MatchName, PolicyQuery): """ Query SELinux policy roles. Parameter: policy The policy to query. Keyword Parameters/Class attributes: name The role name to match. name_regex If true, regular expression matching will be used on the role names. types The type to match. types_equal If true, only roles with type sets that are equal to the criteria will match. Otherwise, any intersection will match. types_regex If true, regular expression matching will be used on the type names instead of set logic. """ types = CriteriaSetDescriptor("types_regex", "lookup_type") types_equal = False types_regex = False def __init__(self, policy, **kwargs): super(RoleQuery, self).__init__(policy, **kwargs) self.log = logging.getLogger(__name__) def results(self): """Generator which yields all matching roles.""" self.log.info("Generating role results from {0.policy}".format(self)) self._match_name_debug(self.log) self.log.debug("Types: {0.types!r}, regex: {0.types_regex}, " "eq: {0.types_equal}".format(self)) for r in self.policy.roles(): if not self._match_name(r): continue if self.types and not match_regex_or_set( set(r.types()), self.types, self.types_equal, self.types_regex): continue yield r