ꦫꦣꦺꦤ꧀ꦄꦤ꧀ꦠꦱꦺꦤ

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

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

from ..policyrep import Context, Netifcon

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

class ModifiedNetifcon(NamedTuple):

"""Difference details for a modified netifcon."""

rule: Netifcon
    added_context: Optional[Context]
    removed_context: Optional[Context]
    added_packet: Optional[Context]
    removed_packet: Optional[Context]

class NetifconsDifference(Difference):

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

added_netifcons = DiffResultDescriptor("diff_netifcons")
    removed_netifcons = DiffResultDescriptor("diff_netifcons")
    modified_netifcons = DiffResultDescriptor("diff_netifcons")

def diff_netifcons(self) -> None:
        """Generate the difference in netifcons between the policies."""

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

self.added_netifcons, self.removed_netifcons, matched_netifcons = self._set_diff(
            (NetifconWrapper(n) for n in self.left_policy.netifcons()),
            (NetifconWrapper(n) for n in self.right_policy.netifcons()))

self.modified_netifcons = []

for left_netifcon, right_netifcon in matched_netifcons:
            # Criteria for modified netifcons
            # 1. change to context
            # 2. change to packet context
            if ContextWrapper(left_netifcon.context) != ContextWrapper(right_netifcon.context):
                removed_context = left_netifcon.context
                added_context = right_netifcon.context
            else:
                removed_context = None
                added_context = None

if ContextWrapper(left_netifcon.packet) != ContextWrapper(right_netifcon.packet):
                removed_packet = left_netifcon.packet
                added_packet = right_netifcon.packet
            else:
                removed_packet = None
                added_packet = None

if removed_context or removed_packet:
                self.modified_netifcons.append(ModifiedNetifcon(
                    left_netifcon, added_context, removed_context, added_packet, removed_packet))

#
    # Internal functions
    #
    def _reset_diff(self) -> None:
        """Reset diff results on policy changes."""
        self.log.debug("Resetting netifcon differences")
        self.added_netifcons = None
        self.removed_netifcons = None
        self.modified_netifcons = None

class NetifconWrapper(Wrapper[Netifcon]):

"""Wrap netifcon statements for diff purposes."""

__slots__ = ("netif")

def __init__(self, ocon: Netifcon) -> None:
        self.origin = ocon
        self.netif = ocon.netif
        self.key = hash(ocon)

def __hash__(self):
        return self.key

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

def __eq__(self, other):
        return self.netif == other.netif

[-] 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]