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Editing: ioportconquery.py

# Derived from portconquery.py
#
# SPDX-License-Identifier: LGPL-2.1-only
#
import logging
from typing import Iterable, Optional, Tuple

from .mixins import MatchContext
from .policyrep import Ioportcon, IoportconRange
from .query import PolicyQuery
from .util import match_range

class IoportconQuery(MatchContext, PolicyQuery):

"""
    Ioportcon context query.

Parameter:
    policy          The policy to query.

Keyword Parameters/Class attributes:
    ports           A 2-tuple of the port range to match. (Set both to
                    the same value for a single port)
    ports_subset    If true, the criteria will match if it is a subset
                    of the ioportcon's range.
    ports_overlap   If true, the criteria will match if it overlaps
                    any of the ioportcon's range.
    ports_superset  If true, the criteria will match if it is a superset
                    of the ioportcon's range.
    ports_proper    If true, use proper superset/subset operations.
                    No effect if not using set operations.

user            The criteria to match the context's user.
    user_regex      If true, regular expression matching
                    will be used on the user.

role            The criteria to match the context's role.
    role_regex      If true, regular expression matching
                    will be used on the role.

type_           The criteria to match the context's type.
    type_regex      If true, regular expression matching
                    will be used on the type.

range_          The criteria to match the context's range.
    range_subset    If true, the criteria will match if it is a subset
                    of the context's range.
    range_overlap   If true, the criteria will match if it overlaps
                    any of the context's range.
    range_superset  If true, the criteria will match if it is a superset
                    of the context's range.
    range_proper    If true, use proper superset/subset operations.
                    No effect if not using set operations.
    """

_ports: Optional[IoportconRange] = None
    ports_subset: bool = False
    ports_overlap: bool = False
    ports_superset: bool = False
    ports_proper: bool = False

@property
    def ports(self) -> Optional[IoportconRange]:
        return self._ports

@ports.setter
    def ports(self, value: Optional[Tuple[int, int]]) -> None:
        if value:
            pending_ports = IoportconRange(*value)
            if pending_ports.low < 1 or pending_ports.high < 1:
                raise ValueError("Port numbers must be positive: {0.low}-{0.high}".
                                 format(pending_ports))

if pending_ports.low > pending_ports.high:
                raise ValueError(
                    "The low port must be smaller than the high port: {0.low}-{0.high}".
                    format(pending_ports))

self._ports = pending_ports
        else:
            self._ports = None

def __init__(self, policy, **kwargs) -> None:
        super(IoportconQuery, self).__init__(policy, **kwargs)
        self.log = logging.getLogger(__name__)

def results(self) -> Iterable[Ioportcon]:
        """Generator which yields all matching ioportcons."""
        self.log.info("Generating results from {0.policy}".format(self))
        self.log.debug("Ports: {0.ports!r}, overlap: {0.ports_overlap}, "
                       "subset: {0.ports_subset}, superset: {0.ports_superset}, "
                       "proper: {0.ports_proper}".format(self))
        self._match_context_debug(self.log)

for ioportcon in self.policy.ioportcons():

if self.ports and not match_range(
                    ioportcon.ports,
                    self.ports,
                    self.ports_subset,
                    self.ports_overlap,
                    self.ports_superset,
                    self.ports_proper):
                continue

if not self._match_context(ioportcon.context):
                continue

yield ioportcon

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