Geforce File Manager

NAME	SIZE	ACTIONS
📁 __pycache__		[ DEL ]
📄 __init__.py	3,222 B	[ EDIT ] \| [ DEL ]
📄 bool.py	2,898 B	[ EDIT ] \| [ DEL ]
📄 bounds.py	4,200 B	[ EDIT ] \| [ DEL ]
📄 commons.py	2,883 B	[ EDIT ] \| [ DEL ]
📄 conditional.py	1,717 B	[ EDIT ] \| [ DEL ]
📄 constraints.py	8,843 B	[ EDIT ] \| [ DEL ]
📄 context.py	1,934 B	[ EDIT ] \| [ DEL ]
📄 default.py	4,240 B	[ EDIT ] \| [ DEL ]
📄 descriptors.py	1,637 B	[ EDIT ] \| [ DEL ]
📄 difference.py	5,796 B	[ EDIT ] \| [ DEL ]
📄 fsuse.py	3,184 B	[ EDIT ] \| [ DEL ]
📄 genfscon.py	3,328 B	[ EDIT ] \| [ DEL ]
📄 ibendportcon.py	3,361 B	[ EDIT ] \| [ DEL ]
📄 ibpkeycon.py	3,367 B	[ EDIT ] \| [ DEL ]
📄 initsid.py	2,543 B	[ EDIT ] \| [ DEL ]
📄 mls.py	10,562 B	[ EDIT ] \| [ DEL ]
📄 mlsrules.py	4,916 B	[ EDIT ] \| [ DEL ]
📄 netifcon.py	3,798 B	[ EDIT ] \| [ DEL ]
📄 nodecon.py	3,289 B	[ EDIT ] \| [ DEL ]
📄 objclass.py	3,690 B	[ EDIT ] \| [ DEL ]
📄 polcap.py	1,742 B	[ EDIT ] \| [ DEL ]
📄 portcon.py	3,269 B	[ EDIT ] \| [ DEL ]
📄 properties.py	2,389 B	[ EDIT ] \| [ DEL ]
📄 rbacrules.py	6,579 B	[ EDIT ] \| [ DEL ]
📄 roles.py	3,275 B	[ EDIT ] \| [ DEL ]
📄 terules.py	24,282 B	[ EDIT ] \| [ DEL ]
📄 typeattr.py	3,354 B	[ EDIT ] \| [ DEL ]
📄 types.py	4,975 B	[ EDIT ] \| [ DEL ]
📄 users.py	5,532 B	[ EDIT ] \| [ DEL ]

[ CLOSE ]

EDIT: objclass.py

# Copyright 2015, Tresys Technology, LLC
# Copyright 2018, Chris PeBenito <pebenito@ieee.org>
#
# 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/>.
#
from collections import defaultdict, namedtuple
from contextlib import suppress

from ..exception import NoCommon

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

modified_classes_record = namedtuple("modified_class", ["added_perms",
                                                        "removed_perms",
                                                        "matched_perms"])

_class_cache = defaultdict(dict)

def class_wrapper_factory(class_):
    """
    Wrap class from the specified policy.

This caches results to prevent duplicate wrapper
    objects in memory.
    """

try:
        return _class_cache[class_.policy][class_]
    except KeyError:
        c = SymbolWrapper(class_)
        _class_cache[class_.policy][class_] = c
        return c

class ObjClassDifference(Difference):

"""
    Determine the difference in object classes
    between two policies.
    """

added_classes = DiffResultDescriptor("diff_classes")
    removed_classes = DiffResultDescriptor("diff_classes")
    modified_classes = DiffResultDescriptor("diff_classes")

def diff_classes(self):
        """Generate the difference in object classes between the policies."""

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

self.added_classes, self.removed_classes, matched_classes = self._set_diff(
            (SymbolWrapper(c) for c in self.left_policy.classes()),
            (SymbolWrapper(c) for c in self.right_policy.classes()))

self.modified_classes = dict()

for left_class, right_class in matched_classes:
            # Criteria for modified classes
            # 1. change to permissions (inherited common is expanded)

left_perms = left_class.perms
            with suppress(NoCommon):
                left_perms |= left_class.common.perms

right_perms = right_class.perms
            with suppress(NoCommon):
                right_perms |= right_class.common.perms

added_perms, removed_perms, matched_perms = self._set_diff(left_perms,
                                                                       right_perms,
                                                                       unwrap=False)

if added_perms or removed_perms:
                self.modified_classes[left_class] = modified_classes_record(added_perms,
                                                                            removed_perms,
                                                                            matched_perms)

#
    # Internal functions
    #
    def _reset_diff(self):
        """Reset diff results on policy changes."""
        self.log.debug("Resetting object class differences")
        self.added_classes = None
        self.removed_classes = None
        self.modified_classes = None