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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 import ConfigError
from vyos import airbag
airbag.enable()
sstp_conf = '/run/accel-pppd/sstp.conf'
sstp_chap_secrets = '/run/accel-pppd/sstp.chap-secrets'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['vpn', 'sstp']
if not conf.exists(base):
return None
# retrieve common dictionary keys
sstp = get_accel_dict(conf, base, sstp_chap_secrets)
return sstp
def verify(sstp):
if not sstp:
return None
verify_accel_ppp_base_service(sstp)
if 'client_ip_pool' not in sstp and 'client_ipv6_pool' not in sstp:
raise ConfigError('Client IP subnet required')
#
# SSL certificate checks
#
tmp = dict_search('ssl.ca_cert_file', sstp)
if tmp:
if not os.path.isfile(tmp):
raise ConfigError(f'SSL CA certificate "{tmp}" does not exist!')
tmp = dict_search('ssl.cert_file', sstp)
if not tmp:
raise ConfigError(f'SSL public key file required!')
else:
if not os.path.isfile(tmp):
raise ConfigError(f'SSL public key "{tmp}" does not exist!')
tmp = dict_search('ssl.key_file', sstp)
if not tmp:
raise ConfigError(f'SSL private key file required!')
else:
if not os.path.isfile(tmp):
raise ConfigError(f'SSL private key "{tmp}" does not exist!')
def generate(sstp):
if not sstp:
return None
# accel-cmd reload doesn't work so any change results in a restart of the daemon
render(sstp_conf, 'accel-ppp/sstp.config.tmpl', sstp)
if dict_search('authentication.mode', sstp) == 'local':
render(sstp_chap_secrets, 'accel-ppp/chap-secrets.config_dict.tmpl',
sstp, permission=0o640)
else:
if os.path.exists(sstp_chap_secrets):
os.unlink(sstp_chap_secrets)
return sstp
def apply(sstp):
if not sstp:
call('systemctl stop accel-ppp@sstp.service')
for file in [sstp_chap_secrets, sstp_conf]:
if os.path.exists(file):
os.unlink(file)
return None
call('systemctl restart accel-ppp@sstp.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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