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PATH: usr / lib64 / python3.9 / site-packages / setools / diff

# Copyright 2016, Tresys Technology, LLC
# Copyright 2018, Chris PeBenito <pebenito@ieee.org>
#
# SPDX-License-Identifier: LGPL-2.1-only
#
from collections import defaultdict
from typing import NamedTuple

from ..policyrep import SELinuxPolicy, Boolean

from .descriptors import DiffResultDescriptor
from .difference import Difference, SymbolWrapper
from .typing import SymbolCache

_bool_cache: SymbolCache[Boolean] = defaultdict(dict)

class ModifiedBoolean(NamedTuple):

"""Difference details for a modified Boolean."""

added_state: bool
    removed_state: bool

def boolean_wrapper(policy: SELinuxPolicy, boolean: Boolean) -> SymbolWrapper[Boolean]:
    """
    Wrap booleans from the specified policy.

This caches results to prevent duplicate wrapper
    objects in memory.
    """
    try:
        return _bool_cache[policy][boolean]
    except KeyError:
        b = SymbolWrapper(boolean)
        _bool_cache[policy][boolean] = b
        return b

class BooleansDifference(Difference):

"""Determine the difference in type attributes between two policies."""

added_booleans = DiffResultDescriptor("diff_booleans")
    removed_booleans = DiffResultDescriptor("diff_booleans")
    modified_booleans = DiffResultDescriptor("diff_booleans")

def diff_booleans(self) -> None:
        """Generate the difference in type attributes between the policies."""

self.log.info("Generating Boolean differences from {0.left_policy} to {0.right_policy}".
                      format(self))

self.added_booleans, self.removed_booleans, matched_booleans = \
            self._set_diff(
                (SymbolWrapper(b) for b in self.left_policy.bools()),
                (SymbolWrapper(b) for b in self.right_policy.bools()))

self.modified_booleans = dict()

for left_boolean, right_boolean in matched_booleans:
            # Criteria for modified booleans
            # 1. change to default state
            if left_boolean.state != right_boolean.state:
                self.modified_booleans[left_boolean] = ModifiedBoolean(right_boolean.state,
                                                                       left_boolean.state)

#
    # Internal functions
    #
    def _reset_diff(self) -> None:
        """Reset diff results on policy changes."""
        self.log.debug("Resetting Boolean differences")
        self.added_booleans = None
        self.removed_booleans = None
        self.modified_booleans = None

[-] genfscon.py [edit]
[-] mls.py [edit]
[-] polcap.py [edit]
[-] netifcon.py [edit]
[-] terules.py [edit]
[-] users.py [edit]
[-] types.py [edit]
[-] nodecon.py [edit]
[-] constraints.py [edit]
[-] bounds.py [edit]
[-] __init__.py [edit]
[-] bool.py [edit]
[-] mlsrules.py [edit]
[-] initsid.py [edit]
[-] roles.py [edit]
[-] typing.py [edit]
[-] context.py [edit]
[-] default.py [edit]
[-] fsuse.py [edit]
[-] conditional.py [edit]
[+] ..
[-] descriptors.py [edit]
[-] ibpkeycon.py [edit]
[-] ibendportcon.py [edit]
[-] commons.py [edit]
[-] typeattr.py [edit]
[-] portcon.py [edit]
[-] properties.py [edit]
[+] __pycache__
[-] rbacrules.py [edit]
[-] objclass.py [edit]
[-] difference.py [edit]