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# Copyright 2023-2024 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library. If not, see <http://www.gnu.org/licenses/>.
# - move all pool to named pools
# 'start-stop' migrate to namedpool 'default-range-pool'
# 'subnet' migrate to namedpool 'default-subnet-pool'
# 'default-subnet-pool' is the next pool for 'default-range-pool'
# - There is only one gateway-address, take the first which is configured
# - default-pool by migration.
# 1. If authentication mode = 'local' then it is first named pool.
# If there are not named pools, namedless pool will be default.
# 2. If authentication mode = 'radius' then namedless pool will be default
from vyos.configtree import ConfigTree
from vyos.base import Warning
base = ['service', 'pppoe-server']
pool_base = base + ['client-ip-pool']
def migrate(config: ConfigTree) -> None:
if not config.exists(base):
return
if not config.exists(pool_base):
return
default_pool = ''
range_pool_name = 'default-range-pool'
#Default nameless pools migrations
if config.exists(pool_base + ['start']) and config.exists(pool_base + ['stop']):
def is_legalrange(ip1: str, ip2: str, mask: str):
from ipaddress import IPv4Interface
interface1 = IPv4Interface(f'{ip1}/{mask}')
interface2 = IPv4Interface(f'{ip2}/{mask}')
return interface1.network.network_address == interface2.network.network_address and interface2.ip > interface1.ip
start_ip = config.return_value(pool_base + ['start'])
stop_ip = config.return_value(pool_base + ['stop'])
if is_legalrange(start_ip, stop_ip, '24'):
ip_range = f'{start_ip}-{stop_ip}'
config.set(pool_base + [range_pool_name, 'range'], value=ip_range, replace=False)
default_pool = range_pool_name
else:
Warning(
f'PPPoE client-ip-pool range start-ip:{start_ip} and stop-ip:{stop_ip} can not be migrated.')
config.delete(pool_base + ['start'])
config.delete(pool_base + ['stop'])
if config.exists(pool_base + ['subnet']):
default_pool = range_pool_name
for subnet in config.return_values(pool_base + ['subnet']):
config.set(pool_base + [range_pool_name, 'range'], value=subnet, replace=False)
config.delete(pool_base + ['subnet'])
gateway = ''
if config.exists(base + ['gateway-address']):
gateway = config.return_value(base + ['gateway-address'])
#named pool migration
namedpools_base = pool_base + ['name']
if config.exists(namedpools_base):
if config.exists(base + ['authentication', 'mode']):
if config.return_value(base + ['authentication', 'mode']) == 'local':
if config.list_nodes(namedpools_base):
default_pool = config.list_nodes(namedpools_base)[0]
for pool_name in config.list_nodes(namedpools_base):
pool_path = namedpools_base + [pool_name]
if config.exists(pool_path + ['subnet']):
subnet = config.return_value(pool_path + ['subnet'])
config.set(pool_base + [pool_name, 'range'], value=subnet, replace=False)
if config.exists(pool_path + ['next-pool']):
next_pool = config.return_value(pool_path + ['next-pool'])
config.set(pool_base + [pool_name, 'next-pool'], value=next_pool)
if not gateway:
if config.exists(pool_path + ['gateway-address']):
gateway = config.return_value(pool_path + ['gateway-address'])
config.delete(namedpools_base)
if gateway:
config.set(base + ['gateway-address'], value=gateway)
if default_pool:
config.set(base + ['default-pool'], value=default_pool)
# format as tag node
config.set_tag(pool_base)
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