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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2024-09-10 15:36
__init__.py	3.15 KB	-rw-r--r--	2020-04-01 20:27
bool.py	2.83 KB	-rw-r--r--	2020-04-01 20:27
bounds.py	4.1 KB	-rw-r--r--	2020-04-01 20:27
commons.py	2.82 KB	-rw-r--r--	2020-04-01 20:27
conditional.py	1.68 KB	-rw-r--r--	2020-04-01 20:27
constraints.py	8.64 KB	-rw-r--r--	2020-04-01 20:27
context.py	1.89 KB	-rw-r--r--	2020-04-01 20:27
default.py	4.14 KB	-rw-r--r--	2020-04-01 20:27
descriptors.py	1.6 KB	-rw-r--r--	2020-04-01 20:27
difference.py	5.66 KB	-rw-r--r--	2020-04-01 20:27
fsuse.py	3.11 KB	-rw-r--r--	2020-04-01 20:27
genfscon.py	3.25 KB	-rw-r--r--	2020-04-01 20:27
ibendportcon.py	3.28 KB	-rw-r--r--	2020-04-01 20:27
ibpkeycon.py	3.29 KB	-rw-r--r--	2020-04-01 20:27
initsid.py	2.48 KB	-rw-r--r--	2020-04-01 20:27
mls.py	10.31 KB	-rw-r--r--	2020-04-01 20:27
mlsrules.py	4.8 KB	-rw-r--r--	2020-04-01 20:27
netifcon.py	3.71 KB	-rw-r--r--	2020-04-01 20:27
nodecon.py	3.21 KB	-rw-r--r--	2020-04-01 20:27
objclass.py	3.6 KB	-rw-r--r--	2020-04-01 20:27
polcap.py	1.7 KB	-rw-r--r--	2020-04-01 20:27
portcon.py	3.19 KB	-rw-r--r--	2020-04-01 20:27
properties.py	2.33 KB	-rw-r--r--	2020-04-01 20:27
rbacrules.py	6.42 KB	-rw-r--r--	2020-04-01 20:27
roles.py	3.2 KB	-rw-r--r--	2020-04-01 20:27
terules.py	23.71 KB	-rw-r--r--	2020-04-01 20:27
typeattr.py	3.28 KB	-rw-r--r--	2020-04-01 20:27
types.py	4.86 KB	-rw-r--r--	2020-04-01 20:27
users.py	5.4 KB	-rw-r--r--	2020-04-01 20:27

Rename

# Copyright 2016, 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 .descriptors import DiffResultDescriptor
from .difference import Difference, SymbolWrapper

modified_typeattr_record = namedtuple("modified_typeattr", ["added_types",
                                                            "removed_types",
                                                            "matched_types"])

_typeattr_cache = defaultdict(dict)

def typeattr_wrapper_factory(attr):
    """
    Wrap type attributes from the specified policy.

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

class TypeAttributesDifference(Difference):

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

added_type_attributes = DiffResultDescriptor("diff_type_attributes")
    removed_type_attributes = DiffResultDescriptor("diff_type_attributes")
    modified_type_attributes = DiffResultDescriptor("diff_type_attributes")

def diff_type_attributes(self):
        """Generate the difference in type attributes between the policies."""

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

self.added_type_attributes, self.removed_type_attributes, matched_attributes = \
            self._set_diff(
                (SymbolWrapper(r) for r in self.left_policy.typeattributes()),
                (SymbolWrapper(r) for r in self.right_policy.typeattributes()))

self.modified_type_attributes = dict()

for left_attribute, right_attribute in matched_attributes:
            # Criteria for modified attributes
            # 1. change to type set
            added_types, removed_types, matched_types = self._set_diff(
                (SymbolWrapper(t) for t in left_attribute.expand()),
                (SymbolWrapper(t) for t in right_attribute.expand()))

if added_types or removed_types:
                self.modified_type_attributes[left_attribute] = modified_typeattr_record(
                    added_types, removed_types, matched_types)

#
    # Internal functions
    #
    def _reset_diff(self):
        """Reset diff results on policy changes."""
        self.log.debug("Resetting type attribute differences")
        self.added_type_attributes = None
        self.removed_type_attributes = None
        self.modified_type_attributes = None