#!/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: # - Adjust hostname to have valid FQDN characters only (underscores aren't allowed anymore) # - Adjust duid (old identifier) to comply with duid format # - Rename "service dhcpv6-server shared-network-name ... static-mapping <hostname> identifier ..." # to "service dhcpv6-server shared-network-name ... static-mapping <hostname> duid ..." # - Rename "service dhcpv6-server shared-network-name ... static-mapping <hostname> mac-address ..." # to "service dhcpv6-server shared-network-name ... static-mapping <hostname> mac ..." import sys import re 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', 'dhcpv6-server', 'shared-network-name'] config = ConfigTree(config_file) if not config.exists(base): # Nothing to do sys.exit(0) for network in config.list_nodes(base): # Run this for every specified 'subnet' if config.exists(base + [network, 'subnet']): for subnet in config.list_nodes(base + [network, 'subnet']): base_subnet = base + [network, 'subnet', subnet] if config.exists(base_subnet + ['static-mapping']): for hostname in config.list_nodes(base_subnet + ['static-mapping']): base_mapping = base_subnet + ['static-mapping', hostname] if config.exists(base_mapping + ['identifier']): # Adjust duid to comply with duid format (a:3:b:04:... => 0a:03:0b:04:...) duid = config.return_value(base_mapping + ['identifier']) new_duid = ':'.join(x.rjust(2,'0') for x in duid.split(':')) if new_duid != duid: config.set(base_mapping + ['identifier'], new_duid) # Rename the 'identifier' node to 'duid' config.rename(base_mapping + ['identifier'], 'duid') # Rename the 'mac-address' node to 'mac' if config.exists(base_mapping + ['mac-address']): config.rename(base_mapping + ['mac-address'], 'mac') # Adjust hostname to have valid FQDN characters only new_hostname = re.sub(r'[^a-zA-Z0-9-.]', '-', hostname) if new_hostname != hostname: config.rename(base_mapping, new_hostname) 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)