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#!/usr/bin/env python3
#
# Copyright (C) 2021-2023 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/>.
# - Update SSL to use PKI configuration
import os
from sys import argv
from sys import exit
from vyos.configtree import ConfigTree
from vyos.pki import load_certificate
from vyos.pki import load_crl
from vyos.pki import load_private_key
from vyos.pki import encode_certificate
from vyos.pki import encode_private_key
from vyos.utils.process import run
if len(argv) < 2:
print("Must specify file name!")
exit(1)
file_name = argv[1]
with open(file_name, 'r') as f:
config_file = f.read()
config = ConfigTree(config_file)
base = ['vpn', 'openconnect']
pki_base = ['pki']
if not config.exists(base):
exit(0)
AUTH_DIR = '/config/auth'
def wrapped_pem_to_config_value(pem):
return "".join(pem.strip().split("\n")[1:-1])
if not config.exists(base + ['ssl']):
exit(0)
x509_base = base + ['ssl']
pki_name = 'openconnect'
if not config.exists(pki_base + ['ca']):
config.set(pki_base + ['ca'])
config.set_tag(pki_base + ['ca'])
if not config.exists(pki_base + ['certificate']):
config.set(pki_base + ['certificate'])
config.set_tag(pki_base + ['certificate'])
if config.exists(x509_base + ['ca-cert-file']):
cert_file = config.return_value(x509_base + ['ca-cert-file'])
cert_path = os.path.join(AUTH_DIR, cert_file)
cert = None
if os.path.isfile(cert_path):
if not os.access(cert_path, os.R_OK):
run(f'sudo chmod 644 {cert_path}')
with open(cert_path, 'r') as f:
cert_data = f.read()
cert = load_certificate(cert_data, wrap_tags=False)
if cert:
cert_pem = encode_certificate(cert)
config.set(pki_base + ['ca', pki_name, 'certificate'], value=wrapped_pem_to_config_value(cert_pem))
config.set(x509_base + ['ca-certificate'], value=pki_name)
else:
print(f'Failed to migrate CA certificate on openconnect config')
config.delete(x509_base + ['ca-cert-file'])
if config.exists(x509_base + ['cert-file']):
cert_file = config.return_value(x509_base + ['cert-file'])
cert_path = os.path.join(AUTH_DIR, cert_file)
cert = None
if os.path.isfile(cert_path):
if not os.access(cert_path, os.R_OK):
run(f'sudo chmod 644 {cert_path}')
with open(cert_path, 'r') as f:
cert_data = f.read()
cert = load_certificate(cert_data, wrap_tags=False)
if cert:
cert_pem = encode_certificate(cert)
config.set(pki_base + ['certificate', pki_name, 'certificate'], value=wrapped_pem_to_config_value(cert_pem))
config.set(x509_base + ['certificate'], value=pki_name)
else:
print(f'Failed to migrate certificate on openconnect config')
config.delete(x509_base + ['cert-file'])
if config.exists(x509_base + ['key-file']):
key_file = config.return_value(x509_base + ['key-file'])
key_path = os.path.join(AUTH_DIR, key_file)
key = None
if os.path.isfile(key_path):
if not os.access(key_path, os.R_OK):
run(f'sudo chmod 644 {key_path}')
with open(key_path, 'r') as f:
key_data = f.read()
key = load_private_key(key_data, passphrase=None, wrap_tags=False)
if key:
key_pem = encode_private_key(key, passphrase=None)
config.set(pki_base + ['certificate', pki_name, 'private', 'key'], value=wrapped_pem_to_config_value(key_pem))
else:
print(f'Failed to migrate private key on openconnect config')
config.delete(x509_base + ['key-file'])
try:
with open(file_name, 'w') as f:
f.write(config.to_string())
except OSError as e:
print("Failed to save the modified config: {}".format(e))
exit(1)

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