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config_ipset.py
# -*- coding: utf-8 -*- # # Copyright (C) 2015-2016 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/>. import dbus import dbus.service from firewall import config from firewall.dbus_utils import dbus_to_python, \ dbus_introspection_prepare_properties, \ dbus_introspection_add_properties from firewall.core.io.ipset import IPSet from firewall.core.ipset import IPSET_TYPES, normalize_ipset_entry, \ check_entry_overlaps_existing, \ check_for_overlapping_entries from firewall.core.logger import log from firewall.server.dbus import DbusServiceObject from firewall.server.decorators import handle_exceptions, \ dbus_handle_exceptions, dbus_service_method, \ dbus_polkit_require_auth from firewall import errors from firewall.errors import FirewallError ############################################################################ # # class FirewallDConfigIPSet # ############################################################################ class FirewallDConfigIPSet(DbusServiceObject): """FirewallD main class""" persistent = True """ Make FirewallD persistent. """ default_polkit_auth_required = config.dbus.PK_ACTION_CONFIG """ Use PK_ACTION_INFO as a default """ @handle_exceptions def __init__(self, parent, conf, ipset, item_id, *args, **kwargs): super(FirewallDConfigIPSet, self).__init__(*args, **kwargs) self.parent = parent self.config = conf self.obj = ipset self.item_id = item_id self.busname = args[0] self.path = args[1] self._log_prefix = "config.ipset.%d" % self.item_id dbus_introspection_prepare_properties( self, config.dbus.DBUS_INTERFACE_CONFIG_IPSET) @dbus_handle_exceptions def __del__(self): pass @dbus_handle_exceptions def unregister(self): self.remove_from_connection() # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # P R O P E R T I E S @dbus_handle_exceptions def _get_property(self, property_name): if property_name == "name": return dbus.String(self.obj.name) elif property_name == "filename": return dbus.String(self.obj.filename) elif property_name == "path": return dbus.String(self.obj.path) elif property_name == "default": return dbus.Boolean(self.obj.default) elif property_name == "builtin": return dbus.Boolean(self.obj.builtin) else: raise dbus.exceptions.DBusException( "org.freedesktop.DBus.Error.InvalidArgs: " "Property '%s' does not exist" % property_name) @dbus_service_method(dbus.PROPERTIES_IFACE, in_signature='ss', out_signature='v') @dbus_handle_exceptions def Get(self, interface_name, property_name, sender=None): # pylint: disable=W0613 # get a property interface_name = dbus_to_python(interface_name, str) property_name = dbus_to_python(property_name, str) log.debug1("%s.Get('%s', '%s')", self._log_prefix, interface_name, property_name) if interface_name != config.dbus.DBUS_INTERFACE_CONFIG_IPSET: raise dbus.exceptions.DBusException( "org.freedesktop.DBus.Error.UnknownInterface: " "Interface '%s' does not exist" % interface_name) return self._get_property(property_name) @dbus_service_method(dbus.PROPERTIES_IFACE, in_signature='s', out_signature='a{sv}') @dbus_handle_exceptions def GetAll(self, interface_name, sender=None): # pylint: disable=W0613 interface_name = dbus_to_python(interface_name, str) log.debug1("%s.GetAll('%s')", self._log_prefix, interface_name) if interface_name != config.dbus.DBUS_INTERFACE_CONFIG_IPSET: raise dbus.exceptions.DBusException( "org.freedesktop.DBus.Error.UnknownInterface: " "Interface '%s' does not exist" % interface_name) ret = { } for x in [ "name", "filename", "path", "default", "builtin" ]: ret[x] = self._get_property(x) return dbus.Dictionary(ret, signature="sv") @dbus_polkit_require_auth(config.dbus.PK_ACTION_CONFIG) @dbus_service_method(dbus.PROPERTIES_IFACE, in_signature='ssv') @dbus_handle_exceptions def Set(self, interface_name, property_name, new_value, sender=None): interface_name = dbus_to_python(interface_name, str) property_name = dbus_to_python(property_name, str) new_value = dbus_to_python(new_value) log.debug1("%s.Set('%s', '%s', '%s')", self._log_prefix, interface_name, property_name, new_value) self.parent.accessCheck(sender) if interface_name != config.dbus.DBUS_INTERFACE_CONFIG_IPSET: raise dbus.exceptions.DBusException( "org.freedesktop.DBus.Error.UnknownInterface: " "Interface '%s' does not exist" % interface_name) raise dbus.exceptions.DBusException( "org.freedesktop.DBus.Error.PropertyReadOnly: " "Property '%s' is read-only" % property_name) @dbus.service.signal(dbus.PROPERTIES_IFACE, signature='sa{sv}as') def PropertiesChanged(self, interface_name, changed_properties, invalidated_properties): interface_name = dbus_to_python(interface_name, str) changed_properties = dbus_to_python(changed_properties) invalidated_properties = dbus_to_python(invalidated_properties) log.debug1("%s.PropertiesChanged('%s', '%s', '%s')", self._log_prefix, interface_name, changed_properties, invalidated_properties) @dbus_polkit_require_auth(config.dbus.PK_ACTION_INFO) @dbus_service_method(dbus.INTROSPECTABLE_IFACE, out_signature='s') @dbus_handle_exceptions def Introspect(self, sender=None): # pylint: disable=W0613 log.debug2("%s.Introspect()", self._log_prefix) data = super(FirewallDConfigIPSet, self).Introspect( self.path, self.busname.get_bus()) return dbus_introspection_add_properties( self, data, config.dbus.DBUS_INTERFACE_CONFIG_IPSET) # S E T T I N G S @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, out_signature=IPSet.DBUS_SIGNATURE) @dbus_handle_exceptions def getSettings(self, sender=None): # pylint: disable=W0613 """get settings for ipset """ log.debug1("%s.getSettings()", self._log_prefix) return self.config.get_ipset_config(self.obj) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature=IPSet.DBUS_SIGNATURE) @dbus_handle_exceptions def update(self, settings, sender=None): """update settings for ipset """ settings = dbus_to_python(settings) log.debug1("%s.update('...')", self._log_prefix) self.parent.accessCheck(sender) self.obj = self.config.set_ipset_config(self.obj, settings) self.Updated(self.obj.name) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET) @dbus_handle_exceptions def loadDefaults(self, sender=None): """load default settings for builtin ipset """ log.debug1("%s.loadDefaults()", self._log_prefix) self.parent.accessCheck(sender) self.obj = self.config.load_ipset_defaults(self.obj) self.Updated(self.obj.name) #self.PropertiesChanged(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, # { "default": True }, [ ]) @dbus.service.signal(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, signature='s') @dbus_handle_exceptions def Updated(self, name): log.debug1("%s.Updated('%s')" % (self._log_prefix, name)) # R E M O V E @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET) @dbus_handle_exceptions def remove(self, sender=None): """remove ipset """ log.debug1("%s.remove()", self._log_prefix) self.parent.accessCheck(sender) self.config.remove_ipset(self.obj) self.parent.removeIPSet(self.obj) @dbus.service.signal(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, signature='s') @dbus_handle_exceptions def Removed(self, name): log.debug1("%s.Removed('%s')" % (self._log_prefix, name)) # R E N A M E @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature='s') @dbus_handle_exceptions def rename(self, name, sender=None): """rename ipset """ name = dbus_to_python(name, str) log.debug1("%s.rename('%s')", self._log_prefix, name) self.parent.accessCheck(sender) self.obj = self.config.rename_ipset(self.obj, name) self.Renamed(name) #self.PropertiesChanged(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, # { "name": name }, [ ]) @dbus.service.signal(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, signature='s') @dbus_handle_exceptions def Renamed(self, name): log.debug1("%s.Renamed('%s')" % (self._log_prefix, name)) # version @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, out_signature='s') @dbus_handle_exceptions def getVersion(self, sender=None): # pylint: disable=W0613 log.debug1("%s.getVersion()", self._log_prefix) return self.getSettings()[0] @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature='s') @dbus_handle_exceptions def setVersion(self, version, sender=None): version = dbus_to_python(version, str) log.debug1("%s.setVersion('%s')", self._log_prefix, version) self.parent.accessCheck(sender) settings = list(self.getSettings()) settings[0] = version self.update(settings) # short @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, out_signature='s') @dbus_handle_exceptions def getShort(self, sender=None): # pylint: disable=W0613 log.debug1("%s.getShort()", self._log_prefix) return self.getSettings()[1] @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature='s') @dbus_handle_exceptions def setShort(self, short, sender=None): short = dbus_to_python(short, str) log.debug1("%s.setShort('%s')", self._log_prefix, short) self.parent.accessCheck(sender) settings = list(self.getSettings()) settings[1] = short self.update(settings) # description @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, out_signature='s') @dbus_handle_exceptions def getDescription(self, sender=None): # pylint: disable=W0613 log.debug1("%s.getDescription()", self._log_prefix) return self.getSettings()[2] @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature='s') @dbus_handle_exceptions def setDescription(self, description, sender=None): description = dbus_to_python(description, str) log.debug1("%s.setDescription('%s')", self._log_prefix, description) self.parent.accessCheck(sender) settings = list(self.getSettings()) settings[2] = description self.update(settings) # type @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, out_signature='s') @dbus_handle_exceptions def getType(self, sender=None): # pylint: disable=W0613 log.debug1("%s.getType()", self._log_prefix) return self.getSettings()[3] @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature='s') @dbus_handle_exceptions def setType(self, ipset_type, sender=None): ipset_type = dbus_to_python(ipset_type, str) log.debug1("%s.setType('%s')", self._log_prefix, ipset_type) self.parent.accessCheck(sender) if ipset_type not in IPSET_TYPES: raise FirewallError(errors.INVALID_TYPE, ipset_type) settings = list(self.getSettings()) settings[3] = ipset_type self.update(settings) # options @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, out_signature='a{ss}') @dbus_handle_exceptions def getOptions(self, sender=None): # pylint: disable=W0613 log.debug1("%s.getOptions()", self._log_prefix) return self.getSettings()[4] @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature='a{ss}') @dbus_handle_exceptions def setOptions(self, options, sender=None): options = dbus_to_python(options, dict) log.debug1("%s.setOptions('[%s]')", self._log_prefix, repr(options)) self.parent.accessCheck(sender) settings = list(self.getSettings()) settings[4] = options self.update(settings) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature='ss') @dbus_handle_exceptions def addOption(self, key, value, sender=None): key = dbus_to_python(key, str) value = dbus_to_python(value, str) log.debug1("%s.addOption('%s', '%s')", self._log_prefix, key, value) self.parent.accessCheck(sender) settings = list(self.getSettings()) if key in settings[4] and settings[4][key] == value: raise FirewallError(errors.ALREADY_ENABLED, "'%s': '%s'" % (key, value)) settings[4][key] = value self.update(settings) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature='s') @dbus_handle_exceptions def removeOption(self, key, sender=None): key = dbus_to_python(key, str) log.debug1("%s.removeOption('%s')", self._log_prefix, key) self.parent.accessCheck(sender) settings = list(self.getSettings()) if key not in settings[4]: raise FirewallError(errors.NOT_ENABLED, key) del settings[4][key] self.update(settings) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature='ss', out_signature='b') @dbus_handle_exceptions def queryOption(self, key, value, sender=None): # pylint: disable=W0613 key = dbus_to_python(key, str) value = dbus_to_python(value, str) log.debug1("%s.queryOption('%s', '%s')", self._log_prefix, key, value) settings = list(self.getSettings()) return (key in settings[4] and settings[4][key] == value) # entries @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, out_signature='as') @dbus_handle_exceptions def getEntries(self, sender=None): # pylint: disable=W0613 log.debug1("%s.getEntries()", self._log_prefix) return self.getSettings()[5] @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature='as') @dbus_handle_exceptions def setEntries(self, entries, sender=None): entries = dbus_to_python(entries, list) check_for_overlapping_entries(entries) log.debug1("%s.setEntries('[%s]')", self._log_prefix, ",".join(entries)) self.parent.accessCheck(sender) settings = list(self.getSettings()) if "timeout" in settings[4] and settings[4]["timeout"] != "0": raise FirewallError(errors.IPSET_WITH_TIMEOUT) settings[5] = entries self.update(settings) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature='s') @dbus_handle_exceptions def addEntry(self, entry, sender=None): entry = dbus_to_python(entry, str) entry = normalize_ipset_entry(entry) log.debug1("%s.addEntry('%s')", self._log_prefix, entry) self.parent.accessCheck(sender) settings = list(self.getSettings()) if "timeout" in settings[4] and settings[4]["timeout"] != "0": raise FirewallError(errors.IPSET_WITH_TIMEOUT) if entry in settings[5]: raise FirewallError(errors.ALREADY_ENABLED, entry) check_entry_overlaps_existing(entry, settings[5]) settings[5].append(entry) self.update(settings) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature='s') @dbus_handle_exceptions def removeEntry(self, entry, sender=None): entry = dbus_to_python(entry, str) entry = normalize_ipset_entry(entry) log.debug1("%s.removeEntry('%s')", self._log_prefix, entry) self.parent.accessCheck(sender) settings = list(self.getSettings()) if "timeout" in settings[4] and settings[4]["timeout"] != "0": raise FirewallError(errors.IPSET_WITH_TIMEOUT) if entry not in settings[5]: raise FirewallError(errors.NOT_ENABLED, entry) settings[5].remove(entry) self.update(settings) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_IPSET, in_signature='s', out_signature='b') @dbus_handle_exceptions def queryEntry(self, entry, sender=None): # pylint: disable=W0613 entry = dbus_to_python(entry, str) entry = normalize_ipset_entry(entry) log.debug1("%s.queryEntry('%s')", self._log_prefix, entry) settings = list(self.getSettings()) if "timeout" in settings[4] and settings[4]["timeout"] != "0": raise FirewallError(errors.IPSET_WITH_TIMEOUT) return entry in settings[5]