77 lines
2.5 KiB
Python
Executable File
77 lines
2.5 KiB
Python
Executable File
# Copyright 2014-2015, Tresys Technology, LLC
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#
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# This file is part of SETools.
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#
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# SETools is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as
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# published by the Free Software Foundation, either version 2.1 of
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# the License, or (at your option) any later version.
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#
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# SETools is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with SETools. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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import logging
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import re
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from .descriptors import CriteriaSetDescriptor
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from .mixins import MatchName
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from .query import PolicyQuery
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from .util import match_regex_or_set
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class RoleQuery(MatchName, PolicyQuery):
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"""
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Query SELinux policy roles.
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Parameter:
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policy The policy to query.
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Keyword Parameters/Class attributes:
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name The role name to match.
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name_regex If true, regular expression matching
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will be used on the role names.
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types The type to match.
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types_equal If true, only roles with type sets
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that are equal to the criteria will
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match. Otherwise, any intersection
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will match.
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types_regex If true, regular expression matching
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will be used on the type names instead
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of set logic.
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"""
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types = CriteriaSetDescriptor("types_regex", "lookup_type")
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types_equal = False
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types_regex = False
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def __init__(self, policy, **kwargs):
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super(RoleQuery, self).__init__(policy, **kwargs)
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self.log = logging.getLogger(__name__)
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def results(self):
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"""Generator which yields all matching roles."""
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self.log.info("Generating role results from {0.policy}".format(self))
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self._match_name_debug(self.log)
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self.log.debug("Types: {0.types!r}, regex: {0.types_regex}, "
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"eq: {0.types_equal}".format(self))
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for r in self.policy.roles():
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if not self._match_name(r):
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continue
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if self.types and not match_regex_or_set(
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set(r.types()),
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self.types,
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self.types_equal,
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self.types_regex):
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continue
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yield r
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