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#!/usr/bin/env python3
#
# Copyright (C) 2018-2023 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# 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 sys import exit
from vyos.config import Config
from vyos.configdict import get_accel_dict
from vyos.configdict import is_node_changed
from vyos.configverify import verify_accel_ppp_base_service
from vyos.configverify import verify_interface_exists
from vyos.template import render
from vyos.utils.process import call
from vyos.utils.dict import dict_search
from vyos import ConfigError
from vyos import airbag
airbag.enable()
pppoe_conf = r'/run/accel-pppd/pppoe.conf'
pppoe_chap_secrets = r'/run/accel-pppd/pppoe.chap-secrets'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['service', 'pppoe-server']
if not conf.exists(base):
return None
# retrieve common dictionary keys
pppoe = get_accel_dict(conf, base, pppoe_chap_secrets)
# reload-or-restart does not implemented in accel-ppp
# use this workaround until it will be implemented
# https://phabricator.accel-ppp.org/T3
conditions = [is_node_changed(conf, base + ['client-ip-pool']),
is_node_changed(conf, base + ['client-ipv6-pool']),
is_node_changed(conf, base + ['interface'])]
if any(conditions):
pppoe.update({'restart_required': {}})
return pppoe
def verify(pppoe):
if not pppoe:
return None
verify_accel_ppp_base_service(pppoe)
if 'wins_server' in pppoe and len(pppoe['wins_server']) > 2:
raise ConfigError('Not more then two WINS name-servers can be configured')
if 'interface' not in pppoe:
raise ConfigError('At least one listen interface must be defined!')
# Check is interface exists in the system
for interface in pppoe['interface']:
verify_interface_exists(interface)
# local ippool and gateway settings config checks
if not (dict_search('client_ip_pool.subnet', pppoe) or
(dict_search('client_ip_pool.name', pppoe) or
(dict_search('client_ip_pool.start', pppoe) and
dict_search('client_ip_pool.stop', pppoe)))):
print('Warning: No PPPoE client pool defined')
if dict_search('authentication.radius.dynamic_author.server', pppoe):
if not dict_search('authentication.radius.dynamic_author.key', pppoe):
raise ConfigError('DA/CoE server key required!')
return None
def generate(pppoe):
if not pppoe:
return None
render(pppoe_conf, 'accel-ppp/pppoe.config.j2', pppoe)
if dict_search('authentication.mode', pppoe) == 'local':
render(pppoe_chap_secrets, 'accel-ppp/chap-secrets.config_dict.j2',
pppoe, permission=0o640)
return None
def apply(pppoe):
systemd_service = 'accel-ppp@pppoe.service'
if not pppoe:
call(f'systemctl stop {systemd_service}')
for file in [pppoe_conf, pppoe_chap_secrets]:
if os.path.exists(file):
os.unlink(file)
return None
if 'restart_required' in pppoe:
call(f'systemctl restart {systemd_service}')
else:
call(f'systemctl reload-or-restart {systemd_service}')
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)
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