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#!/usr/bin/env python3
#
# Copyright (C) 2022-2024 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/>.
# T2199: Migrate interface policy nodes to policy route <name> interface <ifname>
import re
from sys import argv
from sys import exit
from vyos.configtree import ConfigTree
from vyos.ifconfig import Section
if len(argv) < 2:
print("Must specify file name!")
exit(1)
file_name = argv[1]
with open(file_name, 'r') as f:
config_file = f.read()
base4 = ['policy', 'route']
base6 = ['policy', 'route6']
config = ConfigTree(config_file)
def delete_orphaned_interface_policy(config, iftype, ifname, vif=None, vifs=None, vifc=None):
"""Delete unexpected policy on interfaces in cases when
policy does not exist but inreface has a policy configuration
Example T5941:
set interfaces bonding bond0 vif 995 policy
"""
if_path = ['interfaces', iftype, ifname]
if vif:
if_path += ['vif', vif]
elif vifs:
if_path += ['vif-s', vifs]
if vifc:
if_path += ['vif-c', vifc]
if not config.exists(if_path + ['policy']):
return
config.delete(if_path + ['policy'])
if not config.exists(base4) and not config.exists(base6):
# Delete orphaned nodes on interfaces T5941
for iftype in config.list_nodes(['interfaces']):
for ifname in config.list_nodes(['interfaces', iftype]):
delete_orphaned_interface_policy(config, iftype, ifname)
if config.exists(['interfaces', iftype, ifname, 'vif']):
for vif in config.list_nodes(['interfaces', iftype, ifname, 'vif']):
delete_orphaned_interface_policy(config, iftype, ifname, vif=vif)
if config.exists(['interfaces', iftype, ifname, 'vif-s']):
for vifs in config.list_nodes(['interfaces', iftype, ifname, 'vif-s']):
delete_orphaned_interface_policy(config, iftype, ifname, vifs=vifs)
if config.exists(['interfaces', iftype, ifname, 'vif-s', vifs, 'vif-c']):
for vifc in config.list_nodes(['interfaces', iftype, ifname, 'vif-s', vifs, 'vif-c']):
delete_orphaned_interface_policy(config, iftype, ifname, vifs=vifs, vifc=vifc)
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)
# Nothing to do
exit(0)
def migrate_interface(config, iftype, ifname, vif=None, vifs=None, vifc=None):
if_path = ['interfaces', iftype, ifname]
ifname_full = ifname
if vif:
if_path += ['vif', vif]
ifname_full = f'{ifname}.{vif}'
elif vifs:
if_path += ['vif-s', vifs]
ifname_full = f'{ifname}.{vifs}'
if vifc:
if_path += ['vif-c', vifc]
ifname_full = f'{ifname}.{vifs}.{vifc}'
if not config.exists(if_path + ['policy']):
return
if config.exists(if_path + ['policy', 'route']):
route_name = config.return_value(if_path + ['policy', 'route'])
config.set(base4 + [route_name, 'interface'], value=ifname_full, replace=False)
if config.exists(if_path + ['policy', 'route6']):
route_name = config.return_value(if_path + ['policy', 'route6'])
config.set(base6 + [route_name, 'interface'], value=ifname_full, replace=False)
config.delete(if_path + ['policy'])
for iftype in config.list_nodes(['interfaces']):
for ifname in config.list_nodes(['interfaces', iftype]):
migrate_interface(config, iftype, ifname)
if config.exists(['interfaces', iftype, ifname, 'vif']):
for vif in config.list_nodes(['interfaces', iftype, ifname, 'vif']):
migrate_interface(config, iftype, ifname, vif=vif)
if config.exists(['interfaces', iftype, ifname, 'vif-s']):
for vifs in config.list_nodes(['interfaces', iftype, ifname, 'vif-s']):
migrate_interface(config, iftype, ifname, vifs=vifs)
if config.exists(['interfaces', iftype, ifname, 'vif-s', vifs, 'vif-c']):
for vifc in config.list_nodes(['interfaces', iftype, ifname, 'vif-s', vifs, 'vif-c']):
migrate_interface(config, iftype, ifname, vifs=vifs, vifc=vifc)
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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