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# Derived from portconquery.py # # 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 from .mixins import MatchContext from .policyrep import 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 = None ports_subset = False ports_overlap = False ports_superset = False ports_proper = False @property def ports(self): return self._ports @ports.setter def ports(self, value): pending_ports = IoportconRange(*value) if all(pending_ports): 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): super(IoportconQuery, self).__init__(policy, **kwargs) self.log = logging.getLogger(__name__) def results(self): """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