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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.template import render
from vyos.utils.process import call
from vyos.utils.dict import dict_search
from vyos.accel_ppp_util import verify_accel_ppp_ip_pool
from vyos.accel_ppp_util import get_pools_in_order
from vyos import ConfigError
from vyos.configdict import get_accel_dict
from vyos import airbag
airbag.enable()
pptp_conf = '/run/accel-pppd/pptp.conf'
pptp_chap_secrets = '/run/accel-pppd/pptp.chap-secrets'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['vpn', 'pptp', 'remote-access']
if not conf.exists(base):
return None
# retrieve common dictionary keys
pptp = get_accel_dict(conf, base, pptp_chap_secrets)
if dict_search('client_ip_pool', pptp):
# Multiple named pools require ordered values T5099
pptp['ordered_named_pools'] = get_pools_in_order(
dict_search('client_ip_pool', pptp))
pptp['chap_secrets_file'] = pptp_chap_secrets
pptp['server_type'] = 'pptp'
return pptp
def verify(pptp):
if not pptp:
return None
auth_mode = dict_search('authentication.mode', pptp)
if auth_mode == 'local':
if not dict_search('authentication.local_users', pptp):
raise ConfigError(
'PPTP local auth mode requires local users to be configured!')
for user in dict_search('authentication.local_users.username', pptp):
user_config = pptp['authentication']['local_users']['username'][
user]
if 'password' not in user_config:
raise ConfigError(f'Password required for local user "{user}"')
elif auth_mode == 'radius':
if not dict_search('authentication.radius.server', pptp):
raise ConfigError(
'RADIUS authentication requires at least one server')
for server in dict_search('authentication.radius.server', pptp):
radius_config = pptp['authentication']['radius']['server'][server]
if 'key' not in radius_config:
raise ConfigError(
f'Missing RADIUS secret key for server "{server}"')
if auth_mode == 'local' or auth_mode == 'noauth':
if not dict_search('client_ip_pool', pptp):
raise ConfigError(
'PPTP local auth mode requires local client-ip-pool '
'to be configured!')
verify_accel_ppp_ip_pool(pptp)
if 'name_server' in pptp:
if len(pptp['name_server']) > 2:
raise ConfigError(
'Not more then two IPv4 DNS name-servers can be configured'
)
if 'wins_server' in pptp and len(pptp['wins_server']) > 2:
raise ConfigError(
'Not more then two WINS name-servers can be configured')
def generate(pptp):
if not pptp:
return None
render(pptp_conf, 'accel-ppp/pptp.config.j2', pptp)
if dict_search('authentication.mode', pptp) == 'local':
render(pptp_chap_secrets, 'accel-ppp/chap-secrets.config_dict.j2',
pptp, permission=0o640)
return None
def apply(pptp):
if not pptp:
call('systemctl stop accel-ppp@pptp.service')
for file in [pptp_conf, pptp_chap_secrets]:
if os.path.exists(file):
os.unlink(file)
return None
call('systemctl restart accel-ppp@pptp.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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