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__pycache__	[ DIR ]	drwxr-xr-x
__init__.py	2.52 KB	-rw-r--r--
bool.py	2.43 KB	-rw-r--r--
bounds.py	3.69 KB	-rw-r--r--
commons.py	2.15 KB	-rw-r--r--
conditional.py	1.23 KB	-rw-r--r--
constraints.py	8.2 KB	-rw-r--r--
context.py	1.36 KB	-rw-r--r--
default.py	3.54 KB	-rw-r--r--
descriptors.py	1.04 KB	-rw-r--r--
difference.py	5.36 KB	-rw-r--r--
fsuse.py	2.49 KB	-rw-r--r--
genfscon.py	2.66 KB	-rw-r--r--
ibendportcon.py	2.58 KB	-rw-r--r--
ibpkeycon.py	2.59 KB	-rw-r--r--
initsid.py	1.95 KB	-rw-r--r--
mls.py	9.91 KB	-rw-r--r--
mlsrules.py	4.55 KB	-rw-r--r--
netifcon.py	3.05 KB	-rw-r--r--
nodecon.py	2.59 KB	-rw-r--r--
objclass.py	3.08 KB	-rw-r--r--
polcap.py	1.09 KB	-rw-r--r--
portcon.py	2.57 KB	-rw-r--r--
properties.py	1.78 KB	-rw-r--r--
rbacrules.py	6.4 KB	-rw-r--r--
roles.py	2.66 KB	-rw-r--r--
terules.py	24.09 KB	-rw-r--r--
typeattr.py	2.8 KB	-rw-r--r--
types.py	4.17 KB	-rw-r--r--
typing.py	458 B	-rw-r--r--
users.py	5.35 KB	-rw-r--r--

Code Editor : fsuse.py

# Copyright 2016, Tresys Technology, LLC
#
# SPDX-License-Identifier: LGPL-2.1-only
#
from typing import NamedTuple

from ..policyrep import Context, FSUse

from .context import ContextWrapper
from .descriptors import DiffResultDescriptor
from .difference import Difference, Wrapper

class ModifiedFSUse(NamedTuple):

"""Difference details for a modified fs_use_*."""

rule: FSUse
    added_context: Context
    removed_context: Context

class FSUsesDifference(Difference):

"""Determine the difference in fs_use_* rules between two policies."""

added_fs_uses = DiffResultDescriptor("diff_fs_uses")
    removed_fs_uses = DiffResultDescriptor("diff_fs_uses")
    modified_fs_uses = DiffResultDescriptor("diff_fs_uses")

def diff_fs_uses(self) -> None:
        """Generate the difference in fs_use rules between the policies."""

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

self.added_fs_uses, self.removed_fs_uses, matched = self._set_diff(
            (FSUseWrapper(fs) for fs in self.left_policy.fs_uses()),
            (FSUseWrapper(fs) for fs in self.right_policy.fs_uses()))

self.modified_fs_uses = []

for left_rule, right_rule in matched:
            # Criteria for modified rules
            # 1. change to context
            if ContextWrapper(left_rule.context) != ContextWrapper(right_rule.context):
                self.modified_fs_uses.append(ModifiedFSUse(left_rule,
                                                           right_rule.context,
                                                           left_rule.context))

#
    # Internal functions
    #
    def _reset_diff(self) -> None:
        """Reset diff results on policy changes."""
        self.log.debug("Resetting fs_use_* rule differences")
        self.added_fs_uses = None
        self.removed_fs_uses = None
        self.modified_fs_uses = None

class FSUseWrapper(Wrapper[FSUse]):

"""Wrap fs_use_* rules to allow set operations."""

__slots__ = ("ruletype", "fs", "context")

def __init__(self, rule: FSUse) -> None:
        self.origin = rule
        self.ruletype = rule.ruletype
        self.fs = rule.fs
        self.context = ContextWrapper(rule.context)
        self.key = hash(rule)

def __hash__(self):
        return self.key

def __lt__(self, other):
        return self.key < other.key

def __eq__(self, other):
        return self.ruletype == other.ruletype and self.fs == other.fs

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Code Editor : fsuse.py