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#!/usr/bin/env python3
#
# Copyright (C) 2022 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/>.
import os
from ipaddress import ip_interface
from ipaddress import ip_address
from sys import exit, argv
from vyos.configtree import ConfigTree
from vyos.template import is_ipv4
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()
base = ['protocols', 'static', 'arp']
tmp_base = ['protocols', 'static', 'arp-tmp']
config = ConfigTree(config_file)
def fixup_cli(config, path, interface):
if config.exists(path + ['address']):
for address in config.return_values(path + ['address']):
tmp = ip_interface(address)
# ARP is only available for IPv4 ;-)
if not is_ipv4(tmp):
continue
if ip_address(host) in tmp.network.hosts():
mac = config.return_value(tmp_base + [host, 'hwaddr'])
iface_path = ['protocols', 'static', 'arp', 'interface']
config.set(iface_path + [interface, 'address', host, 'mac'], value=mac)
config.set_tag(iface_path)
config.set_tag(iface_path + [interface, 'address'])
continue
if not config.exists(base):
# Nothing to do
exit(0)
# We need a temporary copy of the config tree as the original one needs to be
# deleted first due to a change iun thge tagNode structure.
config.copy(base, tmp_base)
config.delete(base)
for host in config.list_nodes(tmp_base):
for type in config.list_nodes(['interfaces']):
for interface in config.list_nodes(['interfaces', type]):
if_base = ['interfaces', type, interface]
fixup_cli(config, if_base, interface)
if config.exists(if_base + ['vif']):
for vif in config.list_nodes(if_base + ['vif']):
vif_base = ['interfaces', type, interface, 'vif', vif]
fixup_cli(config, vif_base, f'{interface}.{vif}')
if config.exists(if_base + ['vif-s']):
for vif_s in config.list_nodes(if_base + ['vif-s']):
vif_s_base = ['interfaces', type, interface, 'vif-s', vif_s]
fixup_cli(config, vif_s_base, f'{interface}.{vif_s}')
if config.exists(if_base + ['vif-s', vif_s, 'vif-c']):
for vif_c in config.list_nodes(if_base + ['vif-s', vif_s, 'vif-c']):
vif_c_base = ['interfaces', type, interface, 'vif-s', vif_s, 'vif-c', vif_c]
fixup_cli(config, vif_c_base, f'{interface}.{vif_s}.{vif_c}')
config.delete(tmp_base)
try:
with open(file_name, 'w') as f:
f.write(config.to_string())
except OSError as e:
print(f'Failed to save the modified config: {e}')
exit(1)
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