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#!/usr/bin/env python3
#
# Copyright (C) 2021 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/>.
# Migrate /config/auth certificates and keys into 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
if (len(argv) < 1):
print("Must specify file name!")
exit(1)
file_name = argv[1]
with open(file_name, 'r') as f:
config_file = f.read()
pki_base = ['pki']
ipsec_site_base = ['vpn', 'ipsec', 'site-to-site', 'peer']
config = ConfigTree(config_file)
changes_made = False
AUTH_DIR = '/config/auth'
def wrapped_pem_to_config_value(pem):
return "".join(pem.strip().split("\n")[1:-1])
if config.exists(ipsec_site_base):
config.set(pki_base + ['ca'])
config.set_tag(pki_base + ['ca'])
config.set(pki_base + ['certificate'])
config.set_tag(pki_base + ['certificate'])
for peer in config.list_nodes(ipsec_site_base):
if not config.exists(ipsec_site_base + [peer, 'authentication', 'x509']):
continue
changes_made = True
peer_x509_base = ipsec_site_base + [peer, 'authentication', 'x509']
pki_name = 'peer_' + peer.replace(".", "-")
if config.exists(peer_x509_base + ['cert-file']):
cert_file = config.return_value(peer_x509_base + ['cert-file'])
cert_path = os.path.join(AUTH_DIR, cert_file)
cert = None
with open(cert_path, 'r') as f:
cert_data = f.read()
cert = load_certificate(cert_data, wrap_tags=False)
cert_pem = encode_certificate(cert)
config.set(pki_base + ['certificate', pki_name, 'certificate'], value=wrapped_pem_to_config_value(cert_pem))
config.set(peer_x509_base + ['certificate'], value=pki_name)
config.delete(peer_x509_base + ['cert-file'])
if config.exists(peer_x509_base + ['ca-cert-file']):
ca_cert_file = config.return_value(peer_x509_base + ['ca-cert-file'])
ca_cert_path = os.path.join(AUTH_DIR, ca_cert_file)
ca_cert = None
with open(ca_cert_path, 'r') as f:
ca_cert_data = f.read()
ca_cert = load_certificate(ca_cert_data, wrap_tags=False)
ca_cert_pem = encode_certificate(ca_cert)
config.set(pki_base + ['ca', pki_name, 'certificate'], value=wrapped_pem_to_config_value(ca_cert_pem))
config.set(peer_x509_base + ['ca-certificate'], value=pki_name)
config.delete(peer_x509_base + ['ca-cert-file'])
if config.exists(peer_x509_base + ['crl-file']):
crl_file = config.return_value(peer_x509_base + ['crl-file'])
crl_path = os.path.join(AUTH_DIR, crl_file)
crl = None
with open(crl_path, 'r') as f:
crl_data = f.read()
crl = load_crl(crl_data, wrap_tags=False)
crl_pem = encode_certificate(crl)
config.set(pki_base + ['ca', pki_name, 'crl'], value=wrapped_pem_to_config_value(crl_pem))
config.delete(peer_x509_base + ['crl-file'])
if config.exists(peer_x509_base + ['key', 'file']):
key_file = config.return_value(peer_x509_base + ['key', 'file'])
key_passphrase = None
if config.exists(peer_x509_base + ['key', 'password']):
key_passphrase = config.return_value(peer_x509_base + ['key', 'password'])
key_path = os.path.join(AUTH_DIR, key_file)
key = None
with open(key_path, 'r') as f:
key_data = f.read()
key = load_private_key(key_data, passphrase=key_passphrase, wrap_tags=False)
key_pem = encode_private_key(key, passphrase=key_passphrase)
config.set(pki_base + ['certificate', pki_name, 'private', 'key'], value=wrapped_pem_to_config_value(key_pem))
if key_passphrase:
config.set(pki_base + ['certificate', pki_name, 'private', 'password-protected'])
config.set(peer_x509_base + ['private-key-passphrase'], value=key_passphrase)
config.delete(peer_x509_base + ['key'])
if changes_made:
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))
sys.exit(1)

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