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https://github.com/SELinuxProject/setools
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450f94875a
Add backwards compatibility for tuple usage. Signed-off-by: Chris PeBenito <chpebeni@linux.microsoft.com>
88 lines
2.7 KiB
Python
88 lines
2.7 KiB
Python
# 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 dataclasses import dataclass
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from ..policyrep import Context, Ibendportcon
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from .context import ContextWrapper
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from .descriptors import DiffResultDescriptor
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from .difference import Difference, DifferenceResult, Wrapper
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@dataclass(frozen=True)
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class ModifiedIbendportcon(DifferenceResult):
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"""Difference details for a modified ibendportcon."""
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rule: Ibendportcon
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added_context: Context
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removed_context: Context
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def __lt__(self, other) -> bool:
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return self.rule < other.rule
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class IbendportconsDifference(Difference):
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"""Determine the difference in ibendportcons between two policies."""
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added_ibendportcons = DiffResultDescriptor("diff_ibendportcons")
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removed_ibendportcons = DiffResultDescriptor("diff_ibendportcons")
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modified_ibendportcons = DiffResultDescriptor("diff_ibendportcons")
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def diff_ibendportcons(self) -> None:
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"""Generate the difference in ibendportcons between the policies."""
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self.log.info(
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"Generating ibendportcon differences from {0.left_policy} to {0.right_policy}".
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format(self))
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self.added_ibendportcons, self.removed_ibendportcons, matched_ibendportcons = \
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self._set_diff(
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(IbendportconWrapper(n) for n in self.left_policy.ibendportcons()),
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(IbendportconWrapper(n) for n in self.right_policy.ibendportcons()))
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self.modified_ibendportcons = []
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for left_ibep, right_ibep in matched_ibendportcons:
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# Criteria for modified ibendportcons
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# 1. change to context
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if ContextWrapper(left_ibep.context) != ContextWrapper(right_ibep.context):
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self.modified_ibendportcons.append(
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ModifiedIbendportcon(left_ibep, right_ibep.context, left_ibep.context))
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#
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# Internal functions
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#
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def _reset_diff(self) -> None:
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"""Reset diff results on policy changes."""
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self.log.debug("Resetting ibendportcon differences")
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self.added_ibendportcons = None
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self.removed_ibendportcons = None
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self.modified_ibendportcons = None
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class IbendportconWrapper(Wrapper[Ibendportcon]):
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"""Wrap ibendportcon statements for diff purposes."""
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__slots__ = ("name", "port")
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def __init__(self, ocon: Ibendportcon) -> None:
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self.origin = ocon
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self.name = ocon.name
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self.port = ocon.port
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self.key = hash(ocon)
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def __hash__(self):
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return self.key
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def __lt__(self, other):
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return self.origin < other.origin
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def __eq__(self, other):
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return self.name == other.name and \
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self.port == other.port
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