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/constraintquery.py (5634B)

# Copyright 2015, Tresys Technology, LLC
#
# 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/>.
#
import logging
import re

from .descriptors import CriteriaDescriptor, CriteriaSetDescriptor
from .exception import ConstraintUseError
from .mixins import MatchObjClass, MatchPermission
from .policyrep import ConstraintRuletype
from .query import PolicyQuery
from .util import match_in_set

class ConstraintQuery(MatchObjClass, MatchPermission, PolicyQuery):

"""
    Query constraint rules, (mls)constrain/(mls)validatetrans.

Parameter:
    policy            The policy to query.

Keyword Parameters/Class attributes:
    ruletype          The list of rule type(s) to match.
    tclass            The object class(es) to match.
    tclass_regex      If true, use a regular expression for
                      matching the rule's object class.
    perms             The permission(s) to match.
    perms_equal       If true, the permission set of the rule
                      must exactly match the permissions
                      criteria.  If false, any set intersection
                      will match.
    perms_regex       If true, regular expression matching will be used
                      on the permission names instead of set logic.
    role              The name of the role to match in the
                      constraint expression.
    role_indirect     If true, members of an attribute will be
                      matched rather than the attribute itself.
    role_regex        If true, regular expression matching will
                      be used on the role.
    type_             The name of the type/attribute to match in the
                      constraint expression.
    type_indirect     If true, members of an attribute will be
                      matched rather than the attribute itself.
    type_regex        If true, regular expression matching will
                      be used on the type/attribute.
    user              The name of the user to match in the
                      constraint expression.
    user_regex        If true, regular expression matching will
                      be used on the user.
    """

ruletype = CriteriaSetDescriptor(enum_class=ConstraintRuletype)
    user = CriteriaDescriptor("user_regex", "lookup_user")
    user_regex = False
    role = CriteriaDescriptor("role_regex", "lookup_role")
    role_regex = False
    role_indirect = True
    type_ = CriteriaDescriptor("type_regex", "lookup_type_or_attr")
    type_regex = False
    type_indirect = True

def __init__(self, policy, **kwargs):
        super(ConstraintQuery, self).__init__(policy, **kwargs)
        self.log = logging.getLogger(__name__)

def _match_expr(self, expr, criteria, indirect, regex):
        """
        Match roles/types/users in a constraint expression,
        optionally by expanding the contents of attributes.

Parameters:
        expr        The expression to match.
        criteria    The criteria to match.
        indirect    If attributes in the expression should be expanded.
        regex       If regular expression matching should be used.
        """

if indirect:
            obj = set()
            for item in expr:
                obj.update(item.expand())
        else:
            obj = expr

return match_in_set(obj, criteria, regex)

def results(self):
        """Generator which yields all matching constraints rules."""
        self.log.info("Generating constraint results from {0.policy}".format(self))
        self.log.debug("Ruletypes: {0.ruletype}".format(self))
        self._match_object_class_debug(self.log)
        self._match_perms_debug(self.log)
        self.log.debug("User: {0.user!r}, regex: {0.user_regex}".format(self))
        self.log.debug("Role: {0.role!r}, regex: {0.role_regex}".format(self))
        self.log.debug("Type: {0.type_!r}, regex: {0.type_regex}".format(self))

for c in self.policy.constraints():
            if self.ruletype:
                if c.ruletype not in self.ruletype:
                    continue

if not self._match_object_class(c):
                continue

try:
                if not self._match_perms(c):
                    continue
            except ConstraintUseError:
                continue

if self.role and not self._match_expr(
                    c.expression.roles,
                    self.role,
                    self.role_indirect,
                    self.role_regex):
                continue

if self.type_ and not self._match_expr(
                    c.expression.types,
                    self.type_,
                    self.type_indirect,
                    self.type_regex):
                continue

if self.user and not self._match_expr(
                    c.expression.users,
                    self.user,
                    False,
                    self.user_regex):
                continue

yield c

cmd: