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#!/usr/bin/env python3
#
# Copyright (C) 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/>.
from ipaddress import IPv6Address
from ipaddress import IPv6Network
from sys import exit
from vyos.config import Config
from vyos.configdict import get_frrender_dict
from vyos.configverify import has_frr_protocol_in_dict
from vyos.configverify import verify_interface_exists
from vyos.frrender import FRRender
from vyos import ConfigError
from vyos import airbag
airbag.enable()
frrender = FRRender()
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, 'pim6'):
return None
pim6 = config_dict['pim6']
if 'deleted' in pim6:
return None
for interface, interface_config in pim6.get('interface', {}).items():
verify_interface_exists(pim6, interface)
if 'mld' in interface_config:
mld = interface_config['mld']
for group in mld.get('join', {}).keys():
# Validate multicast group address
if not IPv6Address(group).is_multicast:
raise ConfigError(f"{group} is not a multicast group")
if 'rp' in pim6:
if 'address' not in pim6['rp']:
raise ConfigError('PIM6 rendezvous point needs to be defined!')
# Check unique multicast groups
unique = []
pim_base_error = 'PIM6 rendezvous point group'
if {'address', 'prefix-list6'} <= set(pim6['rp']):
raise ConfigError(f'{pim_base_error} supports either address or a prefix-list!')
for address, address_config in pim6['rp']['address'].items():
if 'group' not in address_config:
raise ConfigError(f'{pim_base_error} should be defined for "{address}"!')
# Check if it is a multicast group
for gr_addr in address_config['group']:
if not IPv6Network(gr_addr).is_multicast:
raise ConfigError(f'{pim_base_error} "{gr_addr}" is not a multicast group!')
if gr_addr in unique:
raise ConfigError(f'{pim_base_error} must be unique!')
unique.append(gr_addr)
def generate(config_dict):
frrender.generate(config_dict)
def apply(config_dict):
frrender.apply()
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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