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Name	Size	Permission
__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 : portcon.py

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

from ..policyrep import Context, Portcon

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

class ModifiedPortcon(NamedTuple):

"""Difference details for a modified portcon."""

rule: Portcon
    added_context: Context
    removed_context: Context

class PortconsDifference(Difference):

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

added_portcons = DiffResultDescriptor("diff_portcons")
    removed_portcons = DiffResultDescriptor("diff_portcons")
    modified_portcons = DiffResultDescriptor("diff_portcons")

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

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

self.added_portcons, self.removed_portcons, matched_portcons = self._set_diff(
            (PortconWrapper(n) for n in self.left_policy.portcons()),
            (PortconWrapper(n) for n in self.right_policy.portcons()))

self.modified_portcons = []

for left_portcon, right_portcon in matched_portcons:
            # Criteria for modified portcons
            # 1. change to context
            if ContextWrapper(left_portcon.context) != ContextWrapper(right_portcon.context):
                self.modified_portcons.append(ModifiedPortcon(left_portcon,
                                                              right_portcon.context,
                                                              left_portcon.context))

#
    # Internal functions
    #
    def _reset_diff(self) -> None:
        """Reset diff results on policy changes."""
        self.log.debug("Resetting portcon differences")
        self.added_portcons = None
        self.removed_portcons = None
        self.modified_portcons = None

class PortconWrapper(Wrapper[Portcon]):

"""Wrap portcon statements for diff purposes."""

__slots__ = ("protocol", "low", "high")

def __init__(self, ocon: Portcon) -> None:
        self.origin = ocon
        self.protocol = ocon.protocol
        self.low, self.high = ocon.ports
        self.key = hash(ocon)

def __hash__(self):
        return self.key

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

def __eq__(self, other):
        return self.protocol == other.protocol and \
            self.low == other.low and \
            self.high == other.high

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Code Editor : portcon.py