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firewall
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core
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# -*- coding: utf-8 -*- # # Copyright (C) 2011-2016 Red Hat, Inc. # # Authors: # Thomas Woerner <twoerner@redhat.com> # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program 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 General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. # __all__ = [ "FirewallPolicies" ] from firewall import config from firewall.core.logger import log from firewall.core.io.lockdown_whitelist import LockdownWhitelist from firewall import errors from firewall.errors import FirewallError class FirewallPolicies(object): def __init__(self): self._lockdown = False self.lockdown_whitelist = LockdownWhitelist(config.LOCKDOWN_WHITELIST) def __repr__(self): return '%s(%r, %r)' % (self.__class__, self._lockdown, self.lockdown_whitelist) def cleanup(self): self._lockdown = False self.lockdown_whitelist.cleanup() # lockdown def access_check(self, key, value): if key == "context": log.debug2('Doing access check for context "%s"' % value) if self.lockdown_whitelist.match_context(value): log.debug3('context matches.') return True elif key == "uid": log.debug2('Doing access check for uid %d' % value) if self.lockdown_whitelist.match_uid(value): log.debug3('uid matches.') return True elif key == "user": log.debug2('Doing access check for user "%s"' % value) if self.lockdown_whitelist.match_user(value): log.debug3('user matches.') return True elif key == "command": log.debug2('Doing access check for command "%s"' % value) if self.lockdown_whitelist.match_command(value): log.debug3('command matches.') return True return False def enable_lockdown(self): if self._lockdown: raise FirewallError(errors.ALREADY_ENABLED, "enable_lockdown()") self._lockdown = True def disable_lockdown(self): if not self._lockdown: raise FirewallError(errors.NOT_ENABLED, "disable_lockdown()") self._lockdown = False def query_lockdown(self): return self._lockdown
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