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# -*- coding: utf-8 -*-
#
# Copyright (C) 2018 Red Hat, Inc.
#
# Authors:
# Eric Garver <egarver@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 os

from firewall import config
from firewall.errors import FirewallError

from firewall.core.io.zone import zone_reader
from firewall.core.io.service import service_reader
from firewall.core.io.ipset import ipset_reader
from firewall.core.io.icmptype import icmptype_reader
from firewall.core.io.helper import helper_reader
from firewall.core.io.direct import Direct
from firewall.core.io.lockdown_whitelist import LockdownWhitelist
from firewall.core.io.firewalld_conf import firewalld_conf

def check_config(fw=None):
    readers = {
        "ipset" : (ipset_reader, [config.FIREWALLD_IPSETS, config.ETC_FIREWALLD_IPSETS]),
        "helper" : (helper_reader, [config.FIREWALLD_HELPERS, config.ETC_FIREWALLD_HELPERS]),
        "icmptype" : (icmptype_reader, [config.FIREWALLD_ICMPTYPES, config.ETC_FIREWALLD_ICMPTYPES]),
        "service" : (service_reader, [config.FIREWALLD_SERVICES, config.ETC_FIREWALLD_SERVICES]),
        "zone" : (zone_reader, [config.FIREWALLD_ZONES, config.ETC_FIREWALLD_ZONES]),
    }
    for reader in readers.keys():
        for dir in readers[reader][1]:
            if not os.path.isdir(dir):
                continue
            for file in sorted(os.listdir(dir)):
                if file.endswith(".xml"):
                    try:
                        obj = readers[reader][0](file, dir)
                        if fw and reader == "zone":
                            obj.fw_config = fw.config
                        obj.check_config(obj.export_config())
                    except FirewallError as error:
                        raise FirewallError(error.code, "'%s': %s" % (file, error.msg))
                    except Exception as msg:
                        raise Exception("'%s': %s" % (file, msg))
    if os.path.isfile(config.FIREWALLD_DIRECT):
        try:
            obj = Direct(config.FIREWALLD_DIRECT)
            obj.read()
            obj.check_config(obj.export_config())
        except FirewallError as error:
            raise FirewallError(error.code, "'%s': %s" % (config.FIREWALLD_DIRECT, error.msg))
        except Exception as msg:
            raise Exception("'%s': %s" % (config.FIREWALLD_DIRECT, msg))
    if os.path.isfile(config.LOCKDOWN_WHITELIST):
        try:
            obj = LockdownWhitelist(config.LOCKDOWN_WHITELIST)
            obj.read()
            obj.check_config(obj.export_config())
        except FirewallError as error:
            raise FirewallError(error.code, "'%s': %s" % (config.LOCKDOWN_WHITELIST, error.msg))
        except Exception as msg:
            raise Exception("'%s': %s" % (config.LOCKDOWN_WHITELIST, msg))
    if os.path.isfile(config.FIREWALLD_CONF):
        try:
            obj = firewalld_conf(config.FIREWALLD_CONF)
            obj.read()
        except FirewallError as error:
            raise FirewallError(error.code, "'%s': %s" % (config.FIREWALLD_CONF, error.msg))
        except Exception as msg:
            raise Exception("'%s': %s" % (config.FIREWALLD_CONF, msg))
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