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#!/usr/bin/env python3
#
# Copyright (C) 2018-2020 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.configverify import verify_accel_ppp_base_service
from vyos.template import render
from vyos.util import call
from vyos.util import dict_search
from vyos.util import get_interface_config
from vyos.range_regex import range_to_regex
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 convert_pado_delay(pado_delay):
new_pado_delay = {'delays_without_sessions': [],
'delays_with_sessions': []}
for delay, sessions in pado_delay.items():
if not sessions:
new_pado_delay['delays_without_sessions'].append(delay)
else:
new_pado_delay['delays_with_sessions'].append((delay, int(sessions['sessions'])))
return new_pado_delay
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)
if dict_search('pado_delay', pppoe):
pado_delay = dict_search('pado_delay', pppoe)
pppoe['pado_delay'] = convert_pado_delay(pado_delay)
return pppoe
def verify_pado_delay(pppoe):
if 'pado_delay' in pppoe:
pado_delay = pppoe['pado_delay']
delays_without_sessions = pado_delay['delays_without_sessions']
if len(delays_without_sessions) > 1:
raise ConfigError(
f'Cannot add more then ONE pado-delay without sessions, '
f'but {len(delays_without_sessions)} were set'
)
def verify(pppoe):
if not pppoe:
return None
verify_accel_ppp_base_service(pppoe)
verify_pado_delay(pppoe)
if 'wins_server' in pppoe and len(pppoe['wins_server']) > 2:
raise ConfigError('Not more then two IPv4 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 iface in pppoe['interface']:
if not get_interface_config(iface):
raise ConfigError(f'Interface {iface} does not exist!')
# local ippool and gateway settings config checks
if not (dict_search('client_ip_pool.subnet', 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
# Generate special regex for dynamic interfaces
for iface, iface_options in pppoe['interface'].items():
if 'vlan_range' in iface_options:
pppoe['interface'][iface]['regex'] = []
for vlan_range in iface_options['vlan_range']:
pppoe['interface'][iface]['regex'].append(range_to_regex(vlan_range))
render(pppoe_conf, 'accel-ppp/pppoe.config.tmpl', pppoe)
if dict_search('authentication.mode', pppoe) == 'local':
render(pppoe_chap_secrets, 'accel-ppp/chap-secrets.config_dict.tmpl',
pppoe, permission=0o640)
else:
if os.path.exists(pppoe_chap_secrets):
os.unlink(pppoe_chap_secrets)
return None
def apply(pppoe):
if not pppoe:
call('systemctl stop accel-ppp@pppoe.service')
for file in [pppoe_conf, pppoe_chap_secrets]:
if os.path.exists(file):
os.unlink(file)
return None
call('systemctl restart accel-ppp@pppoe.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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