mirror of
https://github.com/SELinuxProject/setools
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89 lines
3.2 KiB
Python
89 lines
3.2 KiB
Python
# Copyright 2014-2015, Tresys Technology, LLC
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#
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# SPDX-License-Identifier: LGPL-2.1-only
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#
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import logging
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import re
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from typing import Iterable, Optional
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from .descriptors import CriteriaDescriptor
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from .mixins import MatchContext
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from .policyrep import Genfscon
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from .query import PolicyQuery
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from .util import match_regex
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class GenfsconQuery(MatchContext, PolicyQuery):
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"""
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Query genfscon statements.
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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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fs The criteria to match the file system type.
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fs_regex If true, regular expression matching
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will be used on the file system type.
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path The criteria to match the path.
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path_regex If true, regular expression matching
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will be used on the path.
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user The criteria to match the context's user.
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user_regex If true, regular expression matching
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will be used on the user.
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role The criteria to match the context's role.
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role_regex If true, regular expression matching
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will be used on the role.
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type_ The criteria to match the context's type.
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type_regex If true, regular expression matching
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will be used on the type.
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range_ The criteria to match the context's range.
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range_subset If true, the criteria will match if it is a subset
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of the context's range.
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range_overlap If true, the criteria will match if it overlaps
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any of the context's range.
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range_superset If true, the criteria will match if it is a superset
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of the context's range.
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range_proper If true, use proper superset/subset operations.
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No effect if not using set operations.
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"""
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filetype: Optional[int] = None
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fs = CriteriaDescriptor("fs_regex")
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fs_regex: bool = False
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path = CriteriaDescriptor("path_regex")
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path_regex: bool = False
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def __init__(self, policy, **kwargs) -> None:
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super(GenfsconQuery, self).__init__(policy, **kwargs)
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self.log = logging.getLogger(__name__)
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def results(self) -> Iterable[Genfscon]:
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"""Generator which yields all matching genfscons."""
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self.log.info("Generating genfscon results from {0.policy}".format(self))
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self.log.debug("FS: {0.fs!r}, regex: {0.fs_regex}".format(self))
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self.log.debug("Path: {0.path!r}, regex: {0.path_regex}".format(self))
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self.log.debug("Filetype: {0.filetype!r}".format(self))
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self._match_context_debug(self.log)
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for genfs in self.policy.genfscons():
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if self.fs and not match_regex(
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genfs.fs,
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self.fs,
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self.fs_regex):
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continue
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if self.path and not match_regex(
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genfs.path,
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self.path,
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self.path_regex):
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continue
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if self.filetype and not self.filetype == genfs.filetype:
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continue
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if not self._match_context(genfs.context):
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continue
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yield genfs
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