mirror of
https://github.com/SELinuxProject/setools
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42 lines
1.2 KiB
Python
42 lines
1.2 KiB
Python
# Copyright 2014-2015, Tresys Technology, LLC
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# Copyright 2018, Chris PeBenito <pebenito@ieee.org>
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#
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# SPDX-License-Identifier: LGPL-2.1-only
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#
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from abc import ABC, abstractmethod
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from logging import Logger
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from typing import Iterable
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from .policyrep import SELinuxPolicy
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class PolicyQuery(ABC):
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"""Abstract base class for SELinux policy queries."""
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log: Logger
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policy: SELinuxPolicy
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def __init__(self, policy: SELinuxPolicy, **kwargs) -> None:
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self.policy = policy
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# keys are sorted in reverse order so regex settings
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# are set before the criteria, e.g. name_regex
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# is set before name. This ensures correct behavior
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# since the criteria descriptors are sensitve to
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# regex settings.
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for name in sorted(kwargs.keys(), reverse=True):
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attr = getattr(self, name, None) # None is not callable
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if callable(attr):
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raise ValueError("Keyword parameter {0} conflicts with a callable.".format(name))
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setattr(self, name, kwargs[name])
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@abstractmethod
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def results(self) -> Iterable:
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"""
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Generator which returns the matches for the query. This method
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should be overridden by subclasses.
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"""
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pass
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