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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/>.
# T3316: Migrate to Kea
# - global-parameters will not function
# - shared-network-parameters will not function
# - subnet-parameters will not function
# - static-mapping-parameters will not function
# - host-decl-name is on by default, option removed
# - ping-check no longer supported
# - failover is default enabled on all subnets that exist on failover servers
import sys
from vyos.configtree import ConfigTree
if (len(sys.argv) < 2):
print("Must specify file name!")
sys.exit(1)
file_name = sys.argv[1]
with open(file_name, 'r') as f:
config_file = f.read()
base = ['service', 'dhcp-server']
config = ConfigTree(config_file)
if not config.exists(base):
# Nothing to do
sys.exit(0)
if config.exists(base + ['host-decl-name']):
config.delete(base + ['host-decl-name'])
if config.exists(base + ['global-parameters']):
config.delete(base + ['global-parameters'])
if config.exists(base + ['shared-network-name']):
for network in config.list_nodes(base + ['shared-network-name']):
base_network = base + ['shared-network-name', network]
if config.exists(base_network + ['ping-check']):
config.delete(base_network + ['ping-check'])
if config.exists(base_network + ['shared-network-parameters']):
config.delete(base_network +['shared-network-parameters'])
if not config.exists(base_network + ['subnet']):
continue
# Run this for every specified 'subnet'
for subnet in config.list_nodes(base_network + ['subnet']):
base_subnet = base_network + ['subnet', subnet]
if config.exists(base_subnet + ['enable-failover']):
config.delete(base_subnet + ['enable-failover'])
if config.exists(base_subnet + ['ping-check']):
config.delete(base_subnet + ['ping-check'])
if config.exists(base_subnet + ['subnet-parameters']):
config.delete(base_subnet + ['subnet-parameters'])
if config.exists(base_subnet + ['static-mapping']):
for mapping in config.list_nodes(base_subnet + ['static-mapping']):
if config.exists(base_subnet + ['static-mapping', mapping, 'static-mapping-parameters']):
config.delete(base_subnet + ['static-mapping', mapping, 'static-mapping-parameters'])
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))
exit(1)
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