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protocols_rpki.py
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protocols_rpki.py
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#!/usr/bin/env python3
#
# Copyright (C) 2021-2024 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 glob import glob
from sys import exit
from vyos.config import Config
from vyos.configverify import has_frr_protocol_in_dict
from vyos.frrender import FRRender
from vyos.frrender import get_frrender_dict
from vyos.pki import wrap_openssh_public_key
from vyos.pki import wrap_openssh_private_key
from vyos.utils.dict import dict_search_args
from vyos.utils.file import write_file
from vyos.utils.process import is_systemd_service_running
from vyos import ConfigError
from vyos import airbag
airbag.enable()
rpki_ssh_key_base = '/run/frr/id_rpki'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
return get_frrender_dict(conf)
def verify(config_dict):
if not has_frr_protocol_in_dict(config_dict, 'rpki'):
return None
rpki = config_dict['rpki']
if 'cache' in rpki:
preferences = []
for peer, peer_config in rpki['cache'].items():
for mandatory in ['port', 'preference']:
if mandatory not in peer_config:
raise ConfigError(f'RPKI cache "{peer}" {mandatory} must be defined!')
if 'preference' in peer_config:
preference = peer_config['preference']
if preference in preferences:
raise ConfigError(f'RPKI cache with preference {preference} already configured!')
preferences.append(preference)
if 'ssh' in peer_config:
if 'username' not in peer_config['ssh']:
raise ConfigError('RPKI+SSH requires username to be defined!')
if 'key' not in peer_config['ssh'] or 'openssh' not in rpki['pki']:
raise ConfigError('RPKI+SSH requires key to be defined!')
if peer_config['ssh']['key'] not in rpki['pki']['openssh']:
raise ConfigError('RPKI+SSH key not found on PKI subsystem!')
return None
def generate(config_dict):
for key in glob(f'{rpki_ssh_key_base}*'):
os.unlink(key)
if not has_frr_protocol_in_dict(config_dict, 'rpki'):
return None
rpki = config_dict['rpki']
if 'cache' in rpki:
for cache, cache_config in rpki['cache'].items():
if 'ssh' in cache_config:
key_name = cache_config['ssh']['key']
public_key_data = dict_search_args(rpki['pki'], 'openssh', key_name, 'public', 'key')
public_key_type = dict_search_args(rpki['pki'], 'openssh', key_name, 'public', 'type')
private_key_data = dict_search_args(rpki['pki'], 'openssh', key_name, 'private', 'key')
cache_config['ssh']['public_key_file'] = f'{rpki_ssh_key_base}_{cache}.pub'
cache_config['ssh']['private_key_file'] = f'{rpki_ssh_key_base}_{cache}'
write_file(cache_config['ssh']['public_key_file'], wrap_openssh_public_key(public_key_data, public_key_type))
write_file(cache_config['ssh']['private_key_file'], wrap_openssh_private_key(private_key_data))
if config_dict and not is_systemd_service_running('vyos-configd.service'):
FRRender().generate(config_dict)
return None
def apply(config_dict):
if config_dict and not is_systemd_service_running('vyos-configd.service'):
FRRender().apply()
return None
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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