Current File : //lib/python2.7/site-packages/firewall/core/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 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)' % \
(self.__class__,
self._ipsets, self._icmptypes, self._services, self._zones,
self._helpers,
self._builtin_ipsets, self._builtin_icmptypes,
self._builtin_services, self._builtin_zones, self._builtin_helpers,
self._firewalld_conf, self._policies, self._direct)
def __init_vars(self):
self._ipsets = { }
self._icmptypes = { }
self._services = { }
self._zones = { }
self._helpers = { }
self._builtin_ipsets = { }
self._builtin_icmptypes = { }
self._builtin_services = { }
self._builtin_zones = { }
self._builtin_helpers = { }
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):
return obj.export_config()
def set_service_config(self, obj, conf):
if obj.builtin:
x = copy.copy(obj)
x.import_config(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(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)
x = Service()
x.check_name(name)
x.import_config(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(name, obj.export_config())
# 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):
return obj.export_config()
def set_zone_config(self, obj, conf):
if obj.builtin:
x = copy.copy(obj)
x.fw_config = self
x.import_config(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(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)
x = Zone()
x.check_name(name)
x.fw_config = self
x.import_config(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)
new_zone = self._copy_zone(obj, name)
self._remove_zone(obj)
return new_zone
def _copy_zone(self, obj, name):
return self.new_zone(name, obj.export_config())
# 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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