mirror of
https://github.com/SELinuxProject/setools
synced 2025-04-04 23:39:29 +00:00
80 lines
2.8 KiB
Python
80 lines
2.8 KiB
Python
# 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 .query import PolicyQuery
|
|
from .descriptors import CriteriaDescriptor, CriteriaSetDescriptor
|
|
from .mixins import MatchObjClass
|
|
from .policyrep import DefaultRuletype, DefaultValue, DefaultRangeValue
|
|
|
|
|
|
class DefaultQuery(MatchObjClass, PolicyQuery):
|
|
|
|
"""
|
|
Query default_* statements.
|
|
|
|
Parameter:
|
|
policy The policy to query.
|
|
|
|
Keyword Parameters/Class attributes:
|
|
ruletype The rule type(s) to match.
|
|
tclass The object class(es) to match.
|
|
tclass_regex If true, use a regular expression for
|
|
matching the rule's object class.
|
|
default The default to base new contexts (e.g. "source" or "target")
|
|
default_range The range to use on new context, default_range only
|
|
("low", "high", "low_high")
|
|
"""
|
|
|
|
ruletype = CriteriaSetDescriptor(enum_class=DefaultRuletype)
|
|
default = CriteriaDescriptor(enum_class=DefaultValue)
|
|
default_range = CriteriaDescriptor(enum_class=DefaultRangeValue)
|
|
|
|
def __init__(self, policy, **kwargs):
|
|
super(DefaultQuery, self).__init__(policy, **kwargs)
|
|
self.log = logging.getLogger(__name__)
|
|
|
|
def results(self):
|
|
"""Generator which yields all matching default_* statements."""
|
|
self.log.info("Generating default_* results from {0.policy}".format(self))
|
|
self.log.debug("Ruletypes: {0.ruletype!r}".format(self))
|
|
self._match_object_class_debug(self.log)
|
|
self.log.debug("Default: {0.default!r}".format(self))
|
|
self.log.debug("Range: {0.default_range!r}".format(self))
|
|
|
|
for d in self.policy.defaults():
|
|
if self.ruletype and d.ruletype not in self.ruletype:
|
|
continue
|
|
|
|
if not self._match_object_class(d):
|
|
continue
|
|
|
|
if self.default and d.default != self.default:
|
|
continue
|
|
|
|
if self.default_range:
|
|
try:
|
|
if d.default_range != self.default_range:
|
|
continue
|
|
except AttributeError:
|
|
continue
|
|
|
|
yield d
|