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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2024-02-12 23:51
__init__.py	3.15 KB	-rw-r--r--	2020-04-01 14:57
bool.py	2.83 KB	-rw-r--r--	2020-04-01 14:57
bounds.py	4.1 KB	-rw-r--r--	2020-04-01 14:57
commons.py	2.82 KB	-rw-r--r--	2020-04-01 14:57
conditional.py	1.68 KB	-rw-r--r--	2020-04-01 14:57
constraints.py	8.64 KB	-rw-r--r--	2020-04-01 14:57
context.py	1.89 KB	-rw-r--r--	2020-04-01 14:57
default.py	4.14 KB	-rw-r--r--	2020-04-01 14:57
descriptors.py	1.6 KB	-rw-r--r--	2020-04-01 14:57
difference.py	5.66 KB	-rw-r--r--	2020-04-01 14:57
fsuse.py	3.11 KB	-rw-r--r--	2020-04-01 14:57
genfscon.py	3.25 KB	-rw-r--r--	2020-04-01 14:57
ibendportcon.py	3.28 KB	-rw-r--r--	2020-04-01 14:57
ibpkeycon.py	3.29 KB	-rw-r--r--	2020-04-01 14:57
initsid.py	2.48 KB	-rw-r--r--	2020-04-01 14:57
mls.py	10.31 KB	-rw-r--r--	2020-04-01 14:57
mlsrules.py	4.8 KB	-rw-r--r--	2020-04-01 14:57
netifcon.py	3.71 KB	-rw-r--r--	2020-04-01 14:57
nodecon.py	3.21 KB	-rw-r--r--	2020-04-01 14:57
objclass.py	3.6 KB	-rw-r--r--	2020-04-01 14:57
polcap.py	1.7 KB	-rw-r--r--	2020-04-01 14:57
portcon.py	3.19 KB	-rw-r--r--	2020-04-01 14:57
properties.py	2.33 KB	-rw-r--r--	2020-04-01 14:57
rbacrules.py	6.42 KB	-rw-r--r--	2020-04-01 14:57
roles.py	3.2 KB	-rw-r--r--	2020-04-01 14:57
terules.py	23.71 KB	-rw-r--r--	2020-04-01 14:57
typeattr.py	3.28 KB	-rw-r--r--	2020-04-01 14:57
types.py	4.86 KB	-rw-r--r--	2020-04-01 14:57
users.py	5.4 KB	-rw-r--r--	2020-04-01 14:57

Rename

# 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 .descriptors import DiffResultDescriptor
from .difference import Difference, SymbolWrapper
from .typeattr import typeattr_wrapper_factory

from ..policyrep import Type

modified_types_record = namedtuple("modified_type", ["added_attributes",
                                                     "removed_attributes",
                                                     "matched_attributes",
                                                     "modified_permissive",
                                                     "permissive",
                                                     "added_aliases",
                                                     "removed_aliases",
                                                     "matched_aliases"])

_types_cache = defaultdict(dict)

def type_wrapper_factory(type_):
    """
    Wrap types from the specified policy.

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

def type_or_attr_wrapper_factory(type_):
    """
    Wrap types or attributes from the specified policy.

This caches results to prevent duplicate wrapper
    objects in memory.
    """
    if isinstance(type_, Type):
        return type_wrapper_factory(type_)
    else:
        return typeattr_wrapper_factory(type_)

class TypesDifference(Difference):

"""Determine the difference in types between two policies."""

added_types = DiffResultDescriptor("diff_types")
    removed_types = DiffResultDescriptor("diff_types")
    modified_types = DiffResultDescriptor("diff_types")

def diff_types(self):
        """Generate the difference in types between the policies."""

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

self.added_types, self.removed_types, matched_types = self._set_diff(
            (SymbolWrapper(t) for t in self.left_policy.types()),
            (SymbolWrapper(t) for t in self.right_policy.types()))

self.modified_types = dict()

for left_type, right_type in matched_types:
            # Criteria for modified types
            # 1. change to attribute set, or
            # 2. change to alias set, or
            # 3. different permissive setting
            added_attr, removed_attr, matched_attr = self._set_diff(
                (SymbolWrapper(a) for a in left_type.attributes()),
                (SymbolWrapper(a) for a in right_type.attributes()))

added_aliases, removed_aliases, matched_aliases = self._set_diff(left_type.aliases(),
                                                                             right_type.aliases(),
                                                                             unwrap=False)

left_permissive = left_type.ispermissive
            right_permissive = right_type.ispermissive
            mod_permissive = left_permissive != right_permissive

if added_attr or removed_attr or added_aliases or removed_aliases or mod_permissive:
                self.modified_types[left_type] = modified_types_record(added_attr,
                                                                       removed_attr,
                                                                       matched_attr,
                                                                       mod_permissive,
                                                                       left_permissive,
                                                                       added_aliases,
                                                                       removed_aliases,
                                                                       matched_aliases)

#
    # Internal functions
    #
    def _reset_diff(self):
        """Reset diff results on policy changes."""
        self.log.debug("Resetting type differences")
        self.added_types = None
        self.removed_types = None
        self.modified_types = None