FM / setools

/usr/lib64/python3.6/site-packages/setools/

/usr/lib64/python3.6/site-packages/setools

Name	Size	Mode	Actions
diff/	-	0755	rm
__pycache__/	-	0755	rm
boolquery.py	2239	0644	edit dl rm
boundsquery.py	2406	0644	edit dl rm
categoryquery.py	1922	0644	edit dl rm
commonquery.py	2164	0644	edit dl rm
constraintquery.py	5634	0644	edit dl rm
defaultquery.py	2865	0644	edit dl rm
descriptors.py	7650	0644	edit dl rm
devicetreeconquery.py	2788	0644	edit dl rm
dta.py	21918	0644	edit dl rm
exception.py	6109	0644	edit dl rm
fsusequery.py	3437	0644	edit dl rm
genfsconquery.py	3770	0644	edit dl rm
ibendportconquery.py	3608	0644	edit dl rm
ibpkeyconquery.py	5346	0644	edit dl rm
infoflow.py	14939	0644	edit dl rm
initsidquery.py	2860	0644	edit dl rm
iomemconquery.py	4544	0644	edit dl rm
ioportconquery.py	4567	0644	edit dl rm
mixins.py	7312	0644	edit dl rm
mlsrulequery.py	4703	0644	edit dl rm
netifconquery.py	3003	0644	edit dl rm
nodeconquery.py	4261	0644	edit dl rm
objclassquery.py	3871	0644	edit dl rm
pcideviceconquery.py	3116	0644	edit dl rm
permmap.py	16490	0644	edit dl rm
perm_map	89255	0644	edit dl rm
pirqconquery.py	3022	0644	edit dl rm
polcapquery.py	1675	0644	edit dl rm
policyrep.cpython-36m-x86_64-linux-gnu.so	1963568	0755	edit dl rm
portconquery.py	5166	0644	edit dl rm
query.py	1734	0644	edit dl rm
rbacrulequery.py	5748	0644	edit dl rm
rolequery.py	2540	0644	edit dl rm
sensitivityquery.py	2718	0644	edit dl rm
terulequery.py	9324	0644	edit dl rm
typeattrquery.py	2682	0644	edit dl rm
typequery.py	3512	0644	edit dl rm
userquery.py	4791	0644	edit dl rm
util.py	5444	0644	edit dl rm
__init__.py	2856	0644	edit dl rm

Edit: /usr/lib64/python3.6/site-packages/setools/descriptors.py (7650B)

# Copyright 2015, Tresys Technology, LLC
# Copyright 2016, 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/>.
#
"""
SETools descriptors.

These classes override how a class's attributes are get/set/deleted.
This is how the @property decorator works.

See https://docs.python.org/3/howto/descriptor.html
for more details.
"""

import re
from abc import ABC, abstractmethod
from collections import defaultdict
from weakref import WeakKeyDictionary

#
# Query criteria descriptors
#
# Implementation note: if the name_regex attribute value
# is changed the criteria must be reset.
#

class CriteriaDescriptor:

"""
    Single item criteria descriptor.

Keyword Parameters:
    name_regex      The name of instance's regex setting attribute;
                    used as name_regex below.  If unset,
                    regular expressions will never be used.
    lookup_function The name of the SELinuxPolicy lookup function,
                    e.g. lookup_type or lookup_boolean.
    default_value   The default value of the criteria.  The default
                    is None.
    enum_class      The class of enumeration which supports a
                    lookup class method.

Read-only instance attribute use (obj parameter):
    policy          The instance of SELinuxPolicy
    name_regex      This attribute is read to determine if
                    the criteria should be looked up or
                    compiled into a regex.  If the attribute
                    does not exist, False is assumed.
    """

def __init__(self, name_regex=None, lookup_function=None, default_value=None, enum_class=None):
        assert name_regex or lookup_function or enum_class, \
            "A simple attribute should be used if there is no regex, lookup function, or enum."
        assert not (lookup_function and enum_class), \
            "Lookup functions and enum classes are mutually exclusive."
        self.regex = name_regex
        self.default_value = default_value
        self.lookup_function = lookup_function
        self.enum_class = enum_class

# use weak references so instances can be
        # garbage collected, rather than unnecessarily
        # kept around due to this descriptor.
        self.instances = WeakKeyDictionary()

def __get__(self, obj, objtype=None):
        if obj is None:
            return self

return self.instances.setdefault(obj, self.default_value)

def __set__(self, obj, value):
        if not value:
            self.instances[obj] = None
        elif self.regex and getattr(obj, self.regex, False):
            self.instances[obj] = re.compile(value)
        elif self.lookup_function:
            lookup = getattr(obj.policy, self.lookup_function)
            self.instances[obj] = lookup(value)
        elif self.enum_class:
            self.instances[obj] = self.enum_class.lookup(value)
        else:
            self.instances[obj] = value

class CriteriaSetDescriptor(CriteriaDescriptor):

"""Descriptor for a set of criteria."""

def __set__(self, obj, value):
        if not value:
            self.instances[obj] = None
        elif self.regex and getattr(obj, self.regex, False):
            self.instances[obj] = re.compile(value)
        elif self.lookup_function:
            lookup = getattr(obj.policy, self.lookup_function)
            self.instances[obj] = set(lookup(v) for v in value)
        elif self.enum_class:
            self.instances[obj] = set(self.enum_class.lookup(v) for v in value)
        else:
            self.instances[obj] = set(value)

#
# NetworkX Graph Descriptors
#
# These descriptors are used to simplify all
# of the dictionary use in the NetworkX graph.
#

class NetworkXGraphEdgeDescriptor(ABC):

"""
    Descriptor abstract base class for NetworkX graph edge attributes.

Parameter:
    name        The edge property name

Instance class attribute use (obj parameter):
    G           The NetworkX graph
    source      The edge's source node
    target      The edge's target node
    """

def __init__(self, propname):
        self.name = propname

def __get__(self, obj, objtype=None):
        if obj is None:
            return self

try:
            return obj.G[obj.source][obj.target][self.name]
        except KeyError:
            raise AttributeError(self.name)

@abstractmethod
    def __set__(self, obj, value):
        pass

@abstractmethod
    def __delete__(self, obj):
        pass

class EdgeAttrDict(NetworkXGraphEdgeDescriptor):

"""A descriptor for edge attributes that are dictionaries."""

def __set__(self, obj, value):
        # None is a special value to initialize the attribute
        if value is None:
            obj.G[obj.source][obj.target][self.name] = defaultdict(list)
        else:
            raise AttributeError("{0} dictionaries should not be assigned directly".
                                 format(self.name))

def __delete__(self, obj):
        obj.G[obj.source][obj.target][self.name].clear()

class EdgeAttrIntMax(NetworkXGraphEdgeDescriptor):

"""
    A descriptor for edge attributes that are non-negative integers that always
    keep the max assigned value until re-initialized.
    """

def __set__(self, obj, value):
        # None is a special value to initialize
        if value is None:
            obj.G[obj.source][obj.target][self.name] = 0
        else:
            current_value = obj.G[obj.source][obj.target][self.name]
            obj.G[obj.source][obj.target][self.name] = max(current_value, value)

def __delete__(self, obj):
        obj.G[obj.source][obj.target][self.name] = 0

class EdgeAttrList(NetworkXGraphEdgeDescriptor):

"""A descriptor for edge attributes that are lists."""

def __set__(self, obj, value):
        # None is a special value to initialize
        if value is None:
            obj.G[obj.source][obj.target][self.name] = []
        else:
            raise ValueError("{0} lists should not be assigned directly".format(self.name))

def __delete__(self, obj):
        obj.G[obj.source][obj.target][self.name].clear()

#
# Permission map descriptors
#
class PermissionMapDescriptor:

"""
    Descriptor for Permission Map mappings.

Parameter:
    name        The map setting name.
    validator   A callable for validating the setting.

Instance class attribute use (obj parameter):
    perm_map    The full permission map.
    class_      The mapping's object class
    perm        The mapping's permission
    """

def __init__(self, propname, validator):
        self.name = propname
        self.validator = validator

def __get__(self, obj, objtype=None):
        if obj is None:
            return self

return obj.perm_map[obj.class_][obj.perm][self.name]

def __set__(self, obj, value):
        obj.perm_map[obj.class_][obj.perm][self.name] = self.validator(value)

def __delete__(self, obj):
        raise AttributeError

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