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Editing: fw_config.py
# -*- 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__ = [ "FirewallConfig" ] import copy import os import os.path import shutil from firewall import config from firewall.core.logger import log from firewall.core.io.icmptype import IcmpType, icmptype_reader, icmptype_writer from firewall.core.io.service import Service, service_reader, service_writer from firewall.core.io.zone import Zone, zone_reader, zone_writer from firewall.core.io.ipset import IPSet, ipset_reader, ipset_writer from firewall.core.io.helper import Helper, helper_reader, helper_writer from firewall.core.io.policy import Policy, policy_reader, policy_writer from firewall import errors from firewall.errors import FirewallError class FirewallConfig(object): def __init__(self, fw): self._fw = fw self.__init_vars() def __repr__(self): return '%s(%r, %r, %r, %r, %r, %r, %r, %r, %r, %r, %r, %r, %r, %r, %r)' % \ (self.__class__, self._ipsets, self._icmptypes, self._services, self._zones, self._helpers, self.policy_objects, self._builtin_ipsets, self._builtin_icmptypes, self._builtin_services, self._builtin_zones, self._builtin_helpers, self._builtin_policy_objects, self._firewalld_conf, self._policies, self._direct) def __init_vars(self): self._ipsets = { } self._icmptypes = { } self._services = { } self._zones = { } self._helpers = { } self._policy_objects = { } self._builtin_ipsets = { } self._builtin_icmptypes = { } self._builtin_services = { } self._builtin_zones = { } self._builtin_helpers = { } self._builtin_policy_objects = { } self._firewalld_conf = None self._policies = None self._direct = None def cleanup(self): for x in list(self._builtin_ipsets.keys()): self._builtin_ipsets[x].cleanup() del self._builtin_ipsets[x] for x in list(self._ipsets.keys()): self._ipsets[x].cleanup() del self._ipsets[x] for x in list(self._builtin_icmptypes.keys()): self._builtin_icmptypes[x].cleanup() del self._builtin_icmptypes[x] for x in list(self._icmptypes.keys()): self._icmptypes[x].cleanup() del self._icmptypes[x] for x in list(self._builtin_services.keys()): self._builtin_services[x].cleanup() del self._builtin_services[x] for x in list(self._services.keys()): self._services[x].cleanup() del self._services[x] for x in list(self._builtin_zones.keys()): self._builtin_zones[x].cleanup() del self._builtin_zones[x] for x in list(self._zones.keys()): self._zones[x].cleanup() del self._zones[x] for x in list(self._builtin_helpers.keys()): self._builtin_helpers[x].cleanup() del self._builtin_helpers[x] for x in list(self._helpers.keys()): self._helpers[x].cleanup() del self._helpers[x] if self._firewalld_conf: self._firewalld_conf.cleanup() del self._firewalld_conf self._firewalld_conf = None if self._policies: self._policies.cleanup() del self._policies self._policies = None if self._direct: self._direct.cleanup() del self._direct self._direct = None self.__init_vars() # access check def lockdown_enabled(self): return self._fw.policies.query_lockdown() def access_check(self, key, value): return self._fw.policies.access_check(key, value) # firewalld_conf def set_firewalld_conf(self, conf): self._firewalld_conf = conf def get_firewalld_conf(self): return self._firewalld_conf def update_firewalld_conf(self): if not os.path.exists(config.FIREWALLD_CONF): self._firewalld_conf.clear() else: self._firewalld_conf.read() # policies def set_policies(self, policies): self._policies = policies def get_policies(self): return self._policies def update_lockdown_whitelist(self): if not os.path.exists(config.LOCKDOWN_WHITELIST): self._policies.lockdown_whitelist.cleanup() else: self._policies.lockdown_whitelist.read() # direct def set_direct(self, direct): self._direct = direct def get_direct(self): return self._direct def update_direct(self): if not os.path.exists(config.FIREWALLD_DIRECT): self._direct.cleanup() else: self._direct.read() # ipset def get_ipsets(self): return sorted(set(list(self._ipsets.keys()) + \ list(self._builtin_ipsets.keys()))) def add_ipset(self, obj): if obj.builtin: self._builtin_ipsets[obj.name] = obj else: self._ipsets[obj.name] = obj def get_ipset(self, name): if name in self._ipsets: return self._ipsets[name] elif name in self._builtin_ipsets: return self._builtin_ipsets[name] raise FirewallError(errors.INVALID_IPSET, name) def load_ipset_defaults(self, obj): if obj.name not in self._ipsets: raise FirewallError(errors.NO_DEFAULTS, obj.name) elif self._ipsets[obj.name] != obj: raise FirewallError(errors.NO_DEFAULTS, "self._ipsets[%s] != obj" % obj.name) elif obj.name not in self._builtin_ipsets: raise FirewallError(errors.NO_DEFAULTS, "'%s' not a built-in ipset" % obj.name) self._remove_ipset(obj) return self._builtin_ipsets[obj.name] def get_ipset_config(self, obj): return obj.export_config() def set_ipset_config(self, obj, conf): if obj.builtin: x = copy.copy(obj) x.import_config(conf) x.path = config.ETC_FIREWALLD_IPSETS x.builtin = False if obj.path != x.path: x.default = False self.add_ipset(x) ipset_writer(x) return x else: obj.import_config(conf) ipset_writer(obj) return obj def new_ipset(self, name, conf): if name in self._ipsets or name in self._builtin_ipsets: raise FirewallError(errors.NAME_CONFLICT, "new_ipset(): '%s'" % name) x = IPSet() x.check_name(name) x.import_config(conf) x.name = name x.filename = "%s.xml" % name x.path = config.ETC_FIREWALLD_IPSETS # It is not possible to add a new one with a name of a buitin x.builtin = False x.default = True ipset_writer(x) self.add_ipset(x) return x def update_ipset_from_path(self, name): filename = os.path.basename(name) path = os.path.dirname(name) if not os.path.exists(name): # removed file if path == config.ETC_FIREWALLD_IPSETS: # removed custom ipset for x in self._ipsets.keys(): obj = self._ipsets[x] if obj.filename == filename: del self._ipsets[x] if obj.name in self._builtin_ipsets: return ("update", self._builtin_ipsets[obj.name]) return ("remove", obj) else: # removed builtin ipset for x in self._builtin_ipsets.keys(): obj = self._builtin_ipsets[x] if obj.filename == filename: del self._builtin_ipsets[x] if obj.name not in self._ipsets: # update dbus ipset return ("remove", obj) else: # builtin hidden, no update needed return (None, None) # ipset not known to firewalld, yet (timeout, ..) return (None, None) # new or updated file log.debug1("Loading ipset file '%s'", name) try: obj = ipset_reader(filename, path) except Exception as msg: log.error("Failed to load ipset file '%s': %s", filename, msg) return (None, None) # new ipset if obj.name not in self._builtin_ipsets and obj.name not in self._ipsets: self.add_ipset(obj) return ("new", obj) # updated ipset if path == config.ETC_FIREWALLD_IPSETS: # custom ipset update if obj.name in self._ipsets: obj.default = self._ipsets[obj.name].default self._ipsets[obj.name] = obj return ("update", obj) else: if obj.name in self._builtin_ipsets: # builtin ipset update del self._builtin_ipsets[obj.name] self._builtin_ipsets[obj.name] = obj if obj.name not in self._ipsets: # update dbus ipset return ("update", obj) else: # builtin hidden, no update needed return (None, None) # ipset not known to firewalld, yet (timeout, ..) return (None, None) def _remove_ipset(self, obj): if obj.name not in self._ipsets: raise FirewallError(errors.INVALID_IPSET, obj.name) if obj.path != config.ETC_FIREWALLD_IPSETS: raise FirewallError(errors.INVALID_DIRECTORY, "'%s' != '%s'" % (obj.path, config.ETC_FIREWALLD_IPSETS)) name = "%s/%s.xml" % (obj.path, obj.name) try: shutil.move(name, "%s.old" % name) except Exception as msg: log.error("Backup of file '%s' failed: %s", name, msg) os.remove(name) del self._ipsets[obj.name] def check_builtin_ipset(self, obj): if obj.builtin or not obj.default: raise FirewallError(errors.BUILTIN_IPSET, "'%s' is built-in ipset" % obj.name) def remove_ipset(self, obj): self.check_builtin_ipset(obj) self._remove_ipset(obj) def rename_ipset(self, obj, name): self.check_builtin_ipset(obj) new_ipset = self._copy_ipset(obj, name) self._remove_ipset(obj) return new_ipset def _copy_ipset(self, obj, name): return self.new_ipset(name, obj.export_config()) # icmptypes def get_icmptypes(self): return sorted(set(list(self._icmptypes.keys()) + \ list(self._builtin_icmptypes.keys()))) def add_icmptype(self, obj): if obj.builtin: self._builtin_icmptypes[obj.name] = obj else: self._icmptypes[obj.name] = obj def get_icmptype(self, name): if name in self._icmptypes: return self._icmptypes[name] elif name in self._builtin_icmptypes: return self._builtin_icmptypes[name] raise FirewallError(errors.INVALID_ICMPTYPE, name) def load_icmptype_defaults(self, obj): if obj.name not in self._icmptypes: raise FirewallError(errors.NO_DEFAULTS, obj.name) elif self._icmptypes[obj.name] != obj: raise FirewallError(errors.NO_DEFAULTS, "self._icmptypes[%s] != obj" % obj.name) elif obj.name not in self._builtin_icmptypes: raise FirewallError(errors.NO_DEFAULTS, "'%s' not a built-in icmptype" % obj.name) self._remove_icmptype(obj) return self._builtin_icmptypes[obj.name] def get_icmptype_config(self, obj): return obj.export_config() def set_icmptype_config(self, obj, conf): if obj.builtin: x = copy.copy(obj) x.import_config(conf) x.path = config.ETC_FIREWALLD_ICMPTYPES x.builtin = False if obj.path != x.path: x.default = False self.add_icmptype(x) icmptype_writer(x) return x else: obj.import_config(conf) icmptype_writer(obj) return obj def new_icmptype(self, name, conf): if name in self._icmptypes or name in self._builtin_icmptypes: raise FirewallError(errors.NAME_CONFLICT, "new_icmptype(): '%s'" % name) x = IcmpType() x.check_name(name) x.import_config(conf) x.name = name x.filename = "%s.xml" % name x.path = config.ETC_FIREWALLD_ICMPTYPES # It is not possible to add a new one with a name of a buitin x.builtin = False x.default = True icmptype_writer(x) self.add_icmptype(x) return x def update_icmptype_from_path(self, name): filename = os.path.basename(name) path = os.path.dirname(name) if not os.path.exists(name): # removed file if path == config.ETC_FIREWALLD_ICMPTYPES: # removed custom icmptype for x in self._icmptypes.keys(): obj = self._icmptypes[x] if obj.filename == filename: del self._icmptypes[x] if obj.name in self._builtin_icmptypes: return ("update", self._builtin_icmptypes[obj.name]) return ("remove", obj) else: # removed builtin icmptype for x in self._builtin_icmptypes.keys(): obj = self._builtin_icmptypes[x] if obj.filename == filename: del self._builtin_icmptypes[x] if obj.name not in self._icmptypes: # update dbus icmptype return ("remove", obj) else: # builtin hidden, no update needed return (None, None) # icmptype not known to firewalld, yet (timeout, ..) return (None, None) # new or updated file log.debug1("Loading icmptype file '%s'", name) try: obj = icmptype_reader(filename, path) except Exception as msg: log.error("Failed to load icmptype file '%s': %s", filename, msg) return (None, None) # new icmptype if obj.name not in self._builtin_icmptypes and obj.name not in self._icmptypes: self.add_icmptype(obj) return ("new", obj) # updated icmptype if path == config.ETC_FIREWALLD_ICMPTYPES: # custom icmptype update if obj.name in self._icmptypes: obj.default = self._icmptypes[obj.name].default self._icmptypes[obj.name] = obj return ("update", obj) else: if obj.name in self._builtin_icmptypes: # builtin icmptype update del self._builtin_icmptypes[obj.name] self._builtin_icmptypes[obj.name] = obj if obj.name not in self._icmptypes: # update dbus icmptype return ("update", obj) else: # builtin hidden, no update needed return (None, None) # icmptype not known to firewalld, yet (timeout, ..) return (None, None) def _remove_icmptype(self, obj): if obj.name not in self._icmptypes: raise FirewallError(errors.INVALID_ICMPTYPE, obj.name) if obj.path != config.ETC_FIREWALLD_ICMPTYPES: raise FirewallError(errors.INVALID_DIRECTORY, "'%s' != '%s'" % \ (obj.path, config.ETC_FIREWALLD_ICMPTYPES)) name = "%s/%s.xml" % (obj.path, obj.name) try: shutil.move(name, "%s.old" % name) except Exception as msg: log.error("Backup of file '%s' failed: %s", name, msg) os.remove(name) del self._icmptypes[obj.name] def check_builtin_icmptype(self, obj): if obj.builtin or not obj.default: raise FirewallError(errors.BUILTIN_ICMPTYPE, "'%s' is built-in icmp type" % obj.name) def remove_icmptype(self, obj): self.check_builtin_icmptype(obj) self._remove_icmptype(obj) def rename_icmptype(self, obj, name): self.check_builtin_icmptype(obj) new_icmptype = self._copy_icmptype(obj, name) self._remove_icmptype(obj) return new_icmptype def _copy_icmptype(self, obj, name): return self.new_icmptype(name, obj.export_config()) # services def get_services(self): return sorted(set(list(self._services.keys()) + \ list(self._builtin_services.keys()))) def add_service(self, obj): if obj.builtin: self._builtin_services[obj.name] = obj else: self._services[obj.name] = obj def get_service(self, name): if name in self._services: return self._services[name] elif name in self._builtin_services: return self._builtin_services[name] raise FirewallError(errors.INVALID_SERVICE, "get_service(): '%s'" % name) def load_service_defaults(self, obj): if obj.name not in self._services: raise FirewallError(errors.NO_DEFAULTS, obj.name) elif self._services[obj.name] != obj: raise FirewallError(errors.NO_DEFAULTS, "self._services[%s] != obj" % obj.name) elif obj.name not in self._builtin_services: raise FirewallError(errors.NO_DEFAULTS, "'%s' not a built-in service" % obj.name) self._remove_service(obj) return self._builtin_services[obj.name] def get_service_config(self, obj): conf_dict = obj.export_config_dict() conf_list = [] for i in range(8): # tuple based dbus API has 8 elements if obj.IMPORT_EXPORT_STRUCTURE[i][0] not in conf_dict: # old API needs the empty elements as well. Grab it from the # object otherwise we don't know the type. conf_list.append(copy.deepcopy(getattr(obj, obj.IMPORT_EXPORT_STRUCTURE[i][0]))) else: conf_list.append(conf_dict[obj.IMPORT_EXPORT_STRUCTURE[i][0]]) return tuple(conf_list) def get_service_config_dict(self, obj): return obj.export_config_dict() def set_service_config(self, obj, conf): conf_dict = {} for i,value in enumerate(conf): conf_dict[obj.IMPORT_EXPORT_STRUCTURE[i][0]] = value if obj.builtin: x = copy.copy(obj) x.import_config_dict(conf_dict) x.path = config.ETC_FIREWALLD_SERVICES x.builtin = False if obj.path != x.path: x.default = False self.add_service(x) service_writer(x) return x else: obj.import_config_dict(conf_dict) service_writer(obj) return obj def set_service_config_dict(self, obj, conf): if obj.builtin: x = copy.copy(obj) x.import_config_dict(conf) x.path = config.ETC_FIREWALLD_SERVICES x.builtin = False if obj.path != x.path: x.default = False self.add_service(x) service_writer(x) return x else: obj.import_config_dict(conf) service_writer(obj) return obj def new_service(self, name, conf): if name in self._services or name in self._builtin_services: raise FirewallError(errors.NAME_CONFLICT, "new_service(): '%s'" % name) conf_dict = {} for i,value in enumerate(conf): conf_dict[Service.IMPORT_EXPORT_STRUCTURE[i][0]] = value x = Service() x.check_name(name) x.import_config_dict(conf_dict) x.name = name x.filename = "%s.xml" % name x.path = config.ETC_FIREWALLD_SERVICES # It is not possible to add a new one with a name of a buitin x.builtin = False x.default = True service_writer(x) self.add_service(x) return x def new_service_dict(self, name, conf): if name in self._services or name in self._builtin_services: raise FirewallError(errors.NAME_CONFLICT, "new_service(): '%s'" % name) x = Service() x.check_name(name) x.import_config_dict(conf) x.name = name x.filename = "%s.xml" % name x.path = config.ETC_FIREWALLD_SERVICES # It is not possible to add a new one with a name of a buitin x.builtin = False x.default = True service_writer(x) self.add_service(x) return x def update_service_from_path(self, name): filename = os.path.basename(name) path = os.path.dirname(name) if not os.path.exists(name): # removed file if path == config.ETC_FIREWALLD_SERVICES: # removed custom service for x in self._services.keys(): obj = self._services[x] if obj.filename == filename: del self._services[x] if obj.name in self._builtin_services: return ("update", self._builtin_services[obj.name]) return ("remove", obj) else: # removed builtin service for x in self._builtin_services.keys(): obj = self._builtin_services[x] if obj.filename == filename: del self._builtin_services[x] if obj.name not in self._services: # update dbus service return ("remove", obj) else: # builtin hidden, no update needed return (None, None) # service not known to firewalld, yet (timeout, ..) return (None, None) # new or updated file log.debug1("Loading service file '%s'", name) try: obj = service_reader(filename, path) except Exception as msg: log.error("Failed to load service file '%s': %s", filename, msg) return (None, None) # new service if obj.name not in self._builtin_services and obj.name not in self._services: self.add_service(obj) return ("new", obj) # updated service if path == config.ETC_FIREWALLD_SERVICES: # custom service update if obj.name in self._services: obj.default = self._services[obj.name].default self._services[obj.name] = obj return ("update", obj) else: if obj.name in self._builtin_services: # builtin service update del self._builtin_services[obj.name] self._builtin_services[obj.name] = obj if obj.name not in self._services: # update dbus service return ("update", obj) else: # builtin hidden, no update needed return (None, None) # service not known to firewalld, yet (timeout, ..) return (None, None) def _remove_service(self, obj): if obj.name not in self._services: raise FirewallError(errors.INVALID_SERVICE, obj.name) if obj.path != config.ETC_FIREWALLD_SERVICES: raise FirewallError(errors.INVALID_DIRECTORY, "'%s' != '%s'" % \ (obj.path, config.ETC_FIREWALLD_SERVICES)) name = "%s/%s.xml" % (obj.path, obj.name) try: shutil.move(name, "%s.old" % name) except Exception as msg: log.error("Backup of file '%s' failed: %s", name, msg) os.remove(name) del self._services[obj.name] def check_builtin_service(self, obj): if obj.builtin or not obj.default: raise FirewallError(errors.BUILTIN_SERVICE, "'%s' is built-in service" % obj.name) def remove_service(self, obj): self.check_builtin_service(obj) self._remove_service(obj) def rename_service(self, obj, name): self.check_builtin_service(obj) new_service = self._copy_service(obj, name) self._remove_service(obj) return new_service def _copy_service(self, obj, name): return self.new_service_dict(name, obj.export_config_dict()) # zones def get_zones(self): return sorted(set(list(self._zones.keys()) + \ list(self._builtin_zones.keys()))) def add_zone(self, obj): if obj.builtin: self._builtin_zones[obj.name] = obj else: self._zones[obj.name] = obj def forget_zone(self, name): if name in self._builtin_zones: del self._builtin_zones[name] if name in self._zones: del self._zones[name] def get_zone(self, name): if name in self._zones: return self._zones[name] elif name in self._builtin_zones: return self._builtin_zones[name] raise FirewallError(errors.INVALID_ZONE, "get_zone(): %s" % name) def load_zone_defaults(self, obj): if obj.name not in self._zones: raise FirewallError(errors.NO_DEFAULTS, obj.name) elif self._zones[obj.name] != obj: raise FirewallError(errors.NO_DEFAULTS, "self._zones[%s] != obj" % obj.name) elif obj.name not in self._builtin_zones: raise FirewallError(errors.NO_DEFAULTS, "'%s' not a built-in zone" % obj.name) self._remove_zone(obj) return self._builtin_zones[obj.name] def get_zone_config(self, obj): conf_dict = obj.export_config_dict() conf_list = [] for i in range(16): # tuple based dbus API has 16 elements if obj.IMPORT_EXPORT_STRUCTURE[i][0] not in conf_dict: # old API needs the empty elements as well. Grab it from the # object otherwise we don't know the type. conf_list.append(copy.deepcopy(getattr(obj, obj.IMPORT_EXPORT_STRUCTURE[i][0]))) else: conf_list.append(conf_dict[obj.IMPORT_EXPORT_STRUCTURE[i][0]]) return tuple(conf_list) def get_zone_config_dict(self, obj): return obj.export_config_dict() def set_zone_config(self, obj, conf): conf_dict = {} for i,value in enumerate(conf): conf_dict[obj.IMPORT_EXPORT_STRUCTURE[i][0]] = value if obj.builtin: x = copy.copy(obj) x.fw_config = self x.import_config_dict(conf_dict) x.path = config.ETC_FIREWALLD_ZONES x.builtin = False if obj.path != x.path: x.default = False self.add_zone(x) zone_writer(x) return x else: obj.fw_config = self obj.import_config_dict(conf_dict) zone_writer(obj) return obj def set_zone_config_dict(self, obj, conf): if obj.builtin: x = copy.copy(obj) x.fw_config = self x.import_config_dict(conf) x.path = config.ETC_FIREWALLD_ZONES x.builtin = False if obj.path != x.path: x.default = False self.add_zone(x) zone_writer(x) return x else: obj.fw_config = self obj.import_config_dict(conf) zone_writer(obj) return obj def new_zone(self, name, conf): if name in self._zones or name in self._builtin_zones: raise FirewallError(errors.NAME_CONFLICT, "new_zone(): '%s'" % name) conf_dict = {} for i,value in enumerate(conf): conf_dict[Zone.IMPORT_EXPORT_STRUCTURE[i][0]] = value x = Zone() x.fw_config = self x.check_name(name) x.import_config_dict(conf_dict) x.name = name x.filename = "%s.xml" % name x.path = config.ETC_FIREWALLD_ZONES # It is not possible to add a new one with a name of a buitin x.builtin = False x.default = True zone_writer(x) self.add_zone(x) return x def new_zone_dict(self, name, conf): if name in self._zones or name in self._builtin_zones: raise FirewallError(errors.NAME_CONFLICT, "new_zone(): '%s'" % name) x = Zone() x.fw_config = self x.check_name(name) x.import_config_dict(conf) x.name = name x.filename = "%s.xml" % name x.path = config.ETC_FIREWALLD_ZONES # It is not possible to add a new one with a name of a buitin x.builtin = False x.default = True zone_writer(x) self.add_zone(x) return x def update_zone_from_path(self, name): filename = os.path.basename(name) path = os.path.dirname(name) if not os.path.exists(name): # removed file if path.startswith(config.ETC_FIREWALLD_ZONES): # removed custom zone for x in self._zones.keys(): obj = self._zones[x] if obj.filename == filename: del self._zones[x] if obj.name in self._builtin_zones: return ("update", self._builtin_zones[obj.name]) return ("remove", obj) else: # removed builtin zone for x in self._builtin_zones.keys(): obj = self._builtin_zones[x] if obj.filename == filename: del self._builtin_zones[x] if obj.name not in self._zones: # update dbus zone return ("remove", obj) else: # builtin hidden, no update needed return (None, None) # zone not known to firewalld, yet (timeout, ..) return (None, None) # new or updated file log.debug1("Loading zone file '%s'", name) try: obj = zone_reader(filename, path) except Exception as msg: log.error("Failed to load zone file '%s': %s", filename, msg) return (None, None) obj.fw_config = self if path.startswith(config.ETC_FIREWALLD_ZONES) and \ len(path) > len(config.ETC_FIREWALLD_ZONES): # custom combined zone part obj.name = "%s/%s" % (os.path.basename(path), os.path.basename(filename)[0:-4]) # new zone if obj.name not in self._builtin_zones and obj.name not in self._zones: self.add_zone(obj) return ("new", obj) # updated zone if path.startswith(config.ETC_FIREWALLD_ZONES): # custom zone update if obj.name in self._zones: obj.default = self._zones[obj.name].default self._zones[obj.name] = obj return ("update", obj) else: if obj.name in self._builtin_zones: # builtin zone update del self._builtin_zones[obj.name] self._builtin_zones[obj.name] = obj if obj.name not in self._zones: # update dbus zone return ("update", obj) else: # builtin hidden, no update needed return (None, None) # zone not known to firewalld, yet (timeout, ..) return (None, None) def _remove_zone(self, obj): if obj.name not in self._zones: raise FirewallError(errors.INVALID_ZONE, obj.name) if not obj.path.startswith(config.ETC_FIREWALLD_ZONES): raise FirewallError(errors.INVALID_DIRECTORY, "'%s' doesn't start with '%s'" % \ (obj.path, config.ETC_FIREWALLD_ZONES)) name = "%s/%s.xml" % (obj.path, obj.name) try: shutil.move(name, "%s.old" % name) except Exception as msg: log.error("Backup of file '%s' failed: %s", name, msg) os.remove(name) del self._zones[obj.name] def check_builtin_zone(self, obj): if obj.builtin or not obj.default: raise FirewallError(errors.BUILTIN_ZONE, "'%s' is built-in zone" % obj.name) def remove_zone(self, obj): self.check_builtin_zone(obj) self._remove_zone(obj) def rename_zone(self, obj, name): self.check_builtin_zone(obj) obj_conf = obj.export_config_dict() self._remove_zone(obj) try: new_zone = self.new_zone_dict(name, obj_conf) except: # re-add original if rename failed self.new_zone_dict(obj.name, obj_conf) raise return new_zone # policy objects def get_policy_objects(self): return sorted(set(list(self._policy_objects.keys()) + \ list(self._builtin_policy_objects.keys()))) def add_policy_object(self, obj): if obj.builtin: self._builtin_policy_objects[obj.name] = obj else: self._policy_objects[obj.name] = obj def get_policy_object(self, name): if name in self._policy_objects: return self._policy_objects[name] elif name in self._builtin_policy_objects: return self._builtin_policy_objects[name] raise FirewallError(errors.INVALID_POLICY, "get_policy_object(): %s" % name) def load_policy_object_defaults(self, obj): if obj.name not in self._policy_objects: raise FirewallError(errors.NO_DEFAULTS, obj.name) elif self._policy_objects[obj.name] != obj: raise FirewallError(errors.NO_DEFAULTS, "self._policy_objects[%s] != obj" % obj.name) elif obj.name not in self._builtin_policy_objects: raise FirewallError(errors.NO_DEFAULTS, "'%s' not a built-in policy" % obj.name) self._remove_policy_object(obj) return self._builtin_policy_objects[obj.name] def get_policy_object_config_dict(self, obj): return obj.export_config_dict() def set_policy_object_config_dict(self, obj, conf): if obj.builtin: x = copy.copy(obj) x.fw_config = self x.import_config_dict(conf) x.path = config.ETC_FIREWALLD_POLICIES x.builtin = False if obj.path != x.path: x.default = False self.add_policy_object(x) policy_writer(x) return x else: obj.fw_config = self obj.import_config_dict(conf) policy_writer(obj) return obj def new_policy_object_dict(self, name, conf): if name in self._policy_objects or name in self._builtin_policy_objects: raise FirewallError(errors.NAME_CONFLICT, "new_policy_object(): '%s'" % name) x = Policy() x.fw_config = self x.check_name(name) x.import_config_dict(conf) x.name = name x.filename = "%s.xml" % name x.path = config.ETC_FIREWALLD_POLICIES # It is not possible to add a new one with a name of a buitin x.builtin = False x.default = True policy_writer(x) self.add_policy_object(x) return x def update_policy_object_from_path(self, name): filename = os.path.basename(name) path = os.path.dirname(name) if not os.path.exists(name): # removed file if path.startswith(config.ETC_FIREWALLD_POLICIES): # removed custom policy_object for x in self._policy_objects.keys(): obj = self._policy_objects[x] if obj.filename == filename: del self._policy_objects[x] if obj.name in self._builtin_policy_objects: return ("update", self._builtin_policy_objects[obj.name]) return ("remove", obj) else: # removed builtin policy_object for x in self._builtin_policy_objects.keys(): obj = self._builtin_policy_objects[x] if obj.filename == filename: del self._builtin_policy_objects[x] if obj.name not in self._policy_objects: # update dbus policy_object return ("remove", obj) else: # builtin hidden, no update needed return (None, None) # policy_object not known to firewalld, yet (timeout, ..) return (None, None) # new or updated file log.debug1("Loading policy file '%s'", name) try: obj = policy_reader(filename, path) except Exception as msg: log.error("Failed to load policy file '%s': %s", filename, msg) return (None, None) obj.fw_config = self if path.startswith(config.ETC_FIREWALLD_POLICIES) and \ len(path) > len(config.ETC_FIREWALLD_POLICIES): # custom combined policy_object part obj.name = "%s/%s" % (os.path.basename(path), os.path.basename(filename)[0:-4]) # new policy_object if obj.name not in self._builtin_policy_objects and obj.name not in self._policy_objects: self.add_policy_object(obj) return ("new", obj) # updated policy_object if path.startswith(config.ETC_FIREWALLD_POLICIES): # custom policy_object update if obj.name in self._policy_objects: obj.default = self._policy_objects[obj.name].default self._policy_objects[obj.name] = obj return ("update", obj) else: if obj.name in self._builtin_policy_objects: # builtin policy_object update del self._builtin_policy_objects[obj.name] self._builtin_policy_objects[obj.name] = obj if obj.name not in self._policy_objects: # update dbus policy_object return ("update", obj) else: # builtin hidden, no update needed return (None, None) # policy_object not known to firewalld, yet (timeout, ..) return (None, None) def _remove_policy_object(self, obj): if obj.name not in self._policy_objects: raise FirewallError(errors.INVALID_POLICY, obj.name) if not obj.path.startswith(config.ETC_FIREWALLD_POLICIES): raise FirewallError(errors.INVALID_DIRECTORY, "'%s' doesn't start with '%s'" % \ (obj.path, config.ETC_FIREWALLD_POLICIES)) name = "%s/%s.xml" % (obj.path, obj.name) try: shutil.move(name, "%s.old" % name) except Exception as msg: log.error("Backup of file '%s' failed: %s", name, msg) os.remove(name) del self._policy_objects[obj.name] def check_builtin_policy_object(self, obj): if obj.builtin or not obj.default: raise FirewallError(errors.BUILTIN_POLICY, "'%s' is built-in policy" % obj.name) def remove_policy_object(self, obj): self.check_builtin_policy_object(obj) self._remove_policy_object(obj) def rename_policy_object(self, obj, name): self.check_builtin_policy_object(obj) new_policy_object = self._copy_policy_object(obj, name) self._remove_policy_object(obj) return new_policy_object def _copy_policy_object(self, obj, name): return self.new_policy_object_dict(name, obj.export_config_dict()) # helper def get_helpers(self): return sorted(set(list(self._helpers.keys()) + \ list(self._builtin_helpers.keys()))) def add_helper(self, obj): if obj.builtin: self._builtin_helpers[obj.name] = obj else: self._helpers[obj.name] = obj def get_helper(self, name): if name in self._helpers: return self._helpers[name] elif name in self._builtin_helpers: return self._builtin_helpers[name] raise FirewallError(errors.INVALID_HELPER, name) def load_helper_defaults(self, obj): if obj.name not in self._helpers: raise FirewallError(errors.NO_DEFAULTS, obj.name) elif self._helpers[obj.name] != obj: raise FirewallError(errors.NO_DEFAULTS, "self._helpers[%s] != obj" % obj.name) elif obj.name not in self._builtin_helpers: raise FirewallError(errors.NO_DEFAULTS, "'%s' not a built-in helper" % obj.name) self._remove_helper(obj) return self._builtin_helpers[obj.name] def get_helper_config(self, obj): return obj.export_config() def set_helper_config(self, obj, conf): if obj.builtin: x = copy.copy(obj) x.import_config(conf) x.path = config.ETC_FIREWALLD_HELPERS x.builtin = False if obj.path != x.path: x.default = False self.add_helper(x) helper_writer(x) return x else: obj.import_config(conf) helper_writer(obj) return obj def new_helper(self, name, conf): if name in self._helpers or name in self._builtin_helpers: raise FirewallError(errors.NAME_CONFLICT, "new_helper(): '%s'" % name) x = Helper() x.check_name(name) x.import_config(conf) x.name = name x.filename = "%s.xml" % name x.path = config.ETC_FIREWALLD_HELPERS # It is not possible to add a new one with a name of a buitin x.builtin = False x.default = True helper_writer(x) self.add_helper(x) return x def update_helper_from_path(self, name): filename = os.path.basename(name) path = os.path.dirname(name) if not os.path.exists(name): # removed file if path == config.ETC_FIREWALLD_HELPERS: # removed custom helper for x in self._helpers.keys(): obj = self._helpers[x] if obj.filename == filename: del self._helpers[x] if obj.name in self._builtin_helpers: return ("update", self._builtin_helpers[obj.name]) return ("remove", obj) else: # removed builtin helper for x in self._builtin_helpers.keys(): obj = self._builtin_helpers[x] if obj.filename == filename: del self._builtin_helpers[x] if obj.name not in self._helpers: # update dbus helper return ("remove", obj) else: # builtin hidden, no update needed return (None, None) # helper not known to firewalld, yet (timeout, ..) return (None, None) # new or updated file log.debug1("Loading helper file '%s'", name) try: obj = helper_reader(filename, path) except Exception as msg: log.error("Failed to load helper file '%s': %s", filename, msg) return (None, None) # new helper if obj.name not in self._builtin_helpers and obj.name not in self._helpers: self.add_helper(obj) return ("new", obj) # updated helper if path == config.ETC_FIREWALLD_HELPERS: # custom helper update if obj.name in self._helpers: obj.default = self._helpers[obj.name].default self._helpers[obj.name] = obj return ("update", obj) else: if obj.name in self._builtin_helpers: # builtin helper update del self._builtin_helpers[obj.name] self._builtin_helpers[obj.name] = obj if obj.name not in self._helpers: # update dbus helper return ("update", obj) else: # builtin hidden, no update needed return (None, None) # helper not known to firewalld, yet (timeout, ..) return (None, None) def _remove_helper(self, obj): if obj.name not in self._helpers: raise FirewallError(errors.INVALID_HELPER, obj.name) if obj.path != config.ETC_FIREWALLD_HELPERS: raise FirewallError(errors.INVALID_DIRECTORY, "'%s' != '%s'" % (obj.path, config.ETC_FIREWALLD_HELPERS)) name = "%s/%s.xml" % (obj.path, obj.name) try: shutil.move(name, "%s.old" % name) except Exception as msg: log.error("Backup of file '%s' failed: %s", name, msg) os.remove(name) del self._helpers[obj.name] def check_builtin_helper(self, obj): if obj.builtin or not obj.default: raise FirewallError(errors.BUILTIN_HELPER, "'%s' is built-in helper" % obj.name) def remove_helper(self, obj): self.check_builtin_helper(obj) self._remove_helper(obj) def rename_helper(self, obj, name): self.check_builtin_helper(obj) new_helper = self._copy_helper(obj, name) self._remove_helper(obj) return new_helper def _copy_helper(self, obj, name): return self.new_helper(name, obj.export_config())
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