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le_cert.py
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le_cert.py
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#!/usr/bin/env python3
#
# Copyright (C) 2019-2020 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 sys
import os
import vyos.defaults
from vyos.config import Config
from vyos import ConfigError
from vyos.util import cmd
from vyos.util import call
from vyos import airbag
airbag.enable()
vyos_conf_scripts_dir = vyos.defaults.directories['conf_mode']
vyos_certbot_dir = vyos.defaults.directories['certbot']
dependencies = [
'https.py',
]
def request_certbot(cert):
email = cert.get('email')
if email is not None:
email_flag = '-m {0}'.format(email)
else:
email_flag = ''
domains = cert.get('domains')
if domains is not None:
domain_flag = '-d ' + ' -d '.join(domains)
else:
domain_flag = ''
certbot_cmd = f'certbot certonly --config-dir {vyos_certbot_dir} -n --nginx --agree-tos --no-eff-email --expand {email_flag} {domain_flag}'
cmd(certbot_cmd,
raising=ConfigError,
message="The certbot request failed for the specified domains.")
def get_config():
conf = Config()
if not conf.exists('service https certificates certbot'):
return None
else:
conf.set_level('service https certificates certbot')
cert = {}
if conf.exists('domain-name'):
cert['domains'] = conf.return_values('domain-name')
if conf.exists('email'):
cert['email'] = conf.return_value('email')
return cert
def verify(cert):
if cert is None:
return None
if 'domains' not in cert:
raise ConfigError("At least one domain name is required to"
" request a letsencrypt certificate.")
if 'email' not in cert:
raise ConfigError("An email address is required to request"
" a letsencrypt certificate.")
def generate(cert):
if cert is None:
return None
# certbot will attempt to reload nginx, even with 'certonly';
# start nginx if not active
ret = call('systemctl is-active --quiet nginx.service')
if ret:
call('systemctl start nginx.service')
request_certbot(cert)
def apply(cert):
if cert is not None:
call('systemctl restart certbot.timer')
else:
call('systemctl stop certbot.timer')
return None
for dep in dependencies:
cmd(f'{vyos_conf_scripts_dir}/{dep}', raising=ConfigError)
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
sys.exit(1)

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