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config_helper.py
# -*- coding: utf-8 -*- # # Copyright (C) 2010-2016 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.helper import Helper 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 FirewallDConfig # ############################################################################ class FirewallDConfigHelper(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, helper, item_id, *args, **kwargs): super(FirewallDConfigHelper, self).__init__(*args, **kwargs) self.parent = parent self.config = conf self.obj = helper self.item_id = item_id self.busname = args[0] self.path = args[1] self._log_prefix = "config.helper.%d" % self.item_id dbus_introspection_prepare_properties( self, config.dbus.DBUS_INTERFACE_CONFIG_HELPER) @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_HELPER: 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_HELPER: 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_HELPER: 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(FirewallDConfigHelper, self).Introspect( self.path, self.busname.get_bus()) return dbus_introspection_add_properties( self, data, config.dbus.DBUS_INTERFACE_CONFIG_HELPER) # S E T T I N G S @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, out_signature=Helper.DBUS_SIGNATURE) @dbus_handle_exceptions def getSettings(self, sender=None): # pylint: disable=W0613 """get settings for helper """ log.debug1("%s.getSettings()", self._log_prefix) return self.config.get_helper_config(self.obj) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, in_signature=Helper.DBUS_SIGNATURE) @dbus_handle_exceptions def update(self, settings, sender=None): """update settings for helper """ settings = dbus_to_python(settings) log.debug1("%s.update('...')", self._log_prefix) self.parent.accessCheck(sender) self.obj = self.config.set_helper_config(self.obj, settings) self.Updated(self.obj.name) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER) @dbus_handle_exceptions def loadDefaults(self, sender=None): """load default settings for builtin helper """ log.debug1("%s.loadDefaults()", self._log_prefix) self.parent.accessCheck(sender) self.obj = self.config.load_helper_defaults(self.obj) self.Updated(self.obj.name) @dbus.service.signal(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, 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_HELPER) @dbus_handle_exceptions def remove(self, sender=None): """remove helper """ log.debug1("%s.removeHelper()", self._log_prefix) self.parent.accessCheck(sender) self.config.remove_helper(self.obj) self.parent.removeHelper(self.obj) @dbus.service.signal(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, 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_HELPER, in_signature='s') @dbus_handle_exceptions def rename(self, name, sender=None): """rename helper """ name = dbus_to_python(name, str) log.debug1("%s.rename('%s')", self._log_prefix, name) self.parent.accessCheck(sender) self.obj = self.config.rename_helper(self.obj, name) self.Renamed(name) @dbus.service.signal(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, 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_HELPER, 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_HELPER, 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_HELPER, 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_HELPER, 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_HELPER, 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_HELPER, 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) # family @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, out_signature='s') @dbus_handle_exceptions def getFamily(self, sender=None): log.debug1("%s.getFamily()", self._log_prefix) self.parent.accessCheck(sender) settings = list(self.getSettings()) return settings[3] @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, in_signature='s') @dbus_handle_exceptions def setFamily(self, ipv, sender=None): ipv = dbus_to_python(ipv, str) log.debug1("%s.setFamily('%s')", self._log_prefix, ipv) self.parent.accessCheck(sender) settings = list(self.getSettings()) if settings[3] == ipv: raise FirewallError(errors.ALREADY_ENABLED, "'%s'" % ipv) settings[3] = ipv self.update(settings) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, in_signature='s', out_signature='b') @dbus_handle_exceptions def queryFamily(self, ipv, sender=None): # pylint: disable=W0613 ipv = dbus_to_python(ipv, str) log.debug1("%s.queryFamily('%s')", self._log_prefix, ipv) settings = self.getSettings() return (settings[3] == ipv) # module @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, out_signature='s') @dbus_handle_exceptions def getModule(self, sender=None): log.debug1("%s.getModule()", self._log_prefix) self.parent.accessCheck(sender) settings = list(self.getSettings()) return settings[4] @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, in_signature='s') @dbus_handle_exceptions def setModule(self, module, sender=None): module = dbus_to_python(module, str) log.debug1("%s.setModule('%s')", self._log_prefix, module) self.parent.accessCheck(sender) settings = list(self.getSettings()) if settings[4] == module: raise FirewallError(errors.ALREADY_ENABLED, "'%s'" % module) settings[4] = module self.update(settings) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, in_signature='s', out_signature='b') @dbus_handle_exceptions def queryModule(self, module, sender=None): # pylint: disable=W0613 module = dbus_to_python(module, str) log.debug1("%s.queryModule('%s')", self._log_prefix, module) settings = self.getSettings() return (settings[4] == module) # port @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, out_signature='a(ss)') @dbus_handle_exceptions def getPorts(self, sender=None): # pylint: disable=W0613 log.debug1("%s.getPorts()", self._log_prefix) return self.getSettings()[5] @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, in_signature='a(ss)') @dbus_handle_exceptions def setPorts(self, ports, sender=None): _ports = [ ] # convert embedded lists to tuples for port in dbus_to_python(ports, list): if isinstance(port, list): _ports.append(tuple(port)) else: _ports.append(port) ports = _ports log.debug1("%s.setPorts('[%s]')", self._log_prefix, ",".join("('%s, '%s')" % (port[0], port[1]) for port in ports)) self.parent.accessCheck(sender) settings = list(self.getSettings()) settings[5] = ports self.update(settings) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, in_signature='ss') @dbus_handle_exceptions def addPort(self, port, protocol, sender=None): port = dbus_to_python(port, str) protocol = dbus_to_python(protocol, str) log.debug1("%s.addPort('%s', '%s')", self._log_prefix, port, protocol) self.parent.accessCheck(sender) settings = list(self.getSettings()) if (port,protocol) in settings[5]: raise FirewallError(errors.ALREADY_ENABLED, "%s:%s" % (port, protocol)) settings[5].append((port,protocol)) self.update(settings) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, in_signature='ss') @dbus_handle_exceptions def removePort(self, port, protocol, sender=None): port = dbus_to_python(port, str) protocol = dbus_to_python(protocol, str) log.debug1("%s.removePort('%s', '%s')", self._log_prefix, port, protocol) self.parent.accessCheck(sender) settings = list(self.getSettings()) if (port,protocol) not in settings[5]: raise FirewallError(errors.NOT_ENABLED, "%s:%s" % (port, protocol)) settings[5].remove((port,protocol)) self.update(settings) @dbus_service_method(config.dbus.DBUS_INTERFACE_CONFIG_HELPER, in_signature='ss', out_signature='b') @dbus_handle_exceptions def queryPort(self, port, protocol, sender=None): # pylint: disable=W0613 port = dbus_to_python(port, str) protocol = dbus_to_python(protocol, str) log.debug1("%s.queryPort('%s', '%s')", self._log_prefix, port, protocol) return (port,protocol) in self.getSettings()[5]
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