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#!/usr/bin/env python3
#
# Copyright (C) 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/>.
from sys import exit
from vyos.base import Warning
from vyos.config import Config
from vyos.configdict import node_changed
from vyos.configverify import verify_interface_exists
from vyos.template import render_to_string
from vyos import ConfigError
from vyos import frr
from vyos import airbag
airbag.enable()
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base_path = ['protocols', 'openfabric']
openfabric = conf.get_config_dict(base_path, key_mangling=('-', '_'),
get_first_key=True,
no_tag_node_value_mangle=True)
# Remove per domain MPLS configuration - get a list of all changed Openfabric domains
# (removed and added) so that they will be properly rendered for the FRR config.
openfabric['domains_all'] = list(conf.list_nodes(' '.join(base_path) + f' domain') +
node_changed(conf, base_path + ['domain']))
# Get a list of all interfaces
openfabric['interfaces_all'] = []
for domain in openfabric['domains_all']:
interfaces_modified = list(node_changed(conf, base_path + ['domain', domain, 'interface']) +
conf.list_nodes(' '.join(base_path) + f' domain {domain} interface'))
openfabric['interfaces_all'].extend(interfaces_modified)
if not conf.exists(base_path):
openfabric.update({'deleted': ''})
return openfabric
def verify(openfabric):
# bail out early - looks like removal from running config
if not openfabric or 'deleted' in openfabric:
return None
if 'net' not in openfabric:
raise ConfigError('Network entity is mandatory!')
# last byte in OpenFabric area address must be 0
tmp = openfabric['net'].split('.')
if int(tmp[-1]) != 0:
raise ConfigError('Last byte of OpenFabric network entity title must always be 0!')
if 'domain' not in openfabric:
raise ConfigError('OpenFabric domain name is mandatory!')
interfaces_used = []
for domain, domain_config in openfabric['domain'].items():
# If interface not set
if 'interface' not in domain_config:
raise ConfigError(f'Interface used for routing updates in OpenFabric "{domain}" is mandatory!')
for iface, iface_config in domain_config['interface'].items():
verify_interface_exists(openfabric, iface)
# interface can be activated only on one OpenFabric instance
if iface in interfaces_used:
raise ConfigError(f'Interface {iface} is already used in different OpenFabric instance!')
if 'address_family' not in iface_config or len(iface_config['address_family']) < 1:
raise ConfigError(f'Need to specify address family for the interface "{iface}"!')
# If md5 and plaintext-password set at the same time
if 'password' in iface_config:
if {'md5', 'plaintext_password'} <= set(iface_config['password']):
raise ConfigError(f'Can use either md5 or plaintext-password for password for the interface!')
if iface == 'lo' and 'passive' not in iface_config:
Warning('For loopback interface passive mode is implied!')
interfaces_used.append(iface)
# If md5 and plaintext-password set at the same time
password = 'domain_password'
if password in domain_config:
if {'md5', 'plaintext_password'} <= set(domain_config[password]):
raise ConfigError(f'Can use either md5 or plaintext-password for domain-password!')
return None
def generate(openfabric):
if not openfabric or 'deleted' in openfabric:
return None
openfabric['frr_fabricd_config'] = render_to_string('frr/fabricd.frr.j2', openfabric)
return None
def apply(openfabric):
openfabric_daemon = 'fabricd'
# Save original configuration prior to starting any commit actions
frr_cfg = frr.FRRConfig()
frr_cfg.load_configuration(openfabric_daemon)
for domain in openfabric['domains_all']:
frr_cfg.modify_section(f'^router openfabric {domain}', stop_pattern='^exit', remove_stop_mark=True)
for interface in openfabric['interfaces_all']:
frr_cfg.modify_section(f'^interface {interface}', stop_pattern='^exit', remove_stop_mark=True)
if 'frr_fabricd_config' in openfabric:
frr_cfg.add_before(frr.default_add_before, openfabric['frr_fabricd_config'])
frr_cfg.commit_configuration(openfabric_daemon)
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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