From 94d245949d103f8fb3384ee14bb2a0e2f69c14db Mon Sep 17 00:00:00 2001 From: Indrajit Raychaudhuri Date: Wed, 20 Dec 2023 19:31:54 -0600 Subject: dhcp: T3316: Apply migration for valid hostname, and identifier (DUID) --- src/migration-scripts/dhcpv6-server/2-to-3 | 78 ++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100755 src/migration-scripts/dhcpv6-server/2-to-3 (limited to 'src/migration-scripts/dhcpv6-server/2-to-3') diff --git a/src/migration-scripts/dhcpv6-server/2-to-3 b/src/migration-scripts/dhcpv6-server/2-to-3 new file mode 100755 index 000000000..f4bdc1d1e --- /dev/null +++ b/src/migration-scripts/dhcpv6-server/2-to-3 @@ -0,0 +1,78 @@ +#!/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 . + +# 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 identifier ..." +# to "service dhcpv6-server shared-network-name ... static-mapping duid ..." +# - Rename "service dhcpv6-server shared-network-name ... static-mapping mac-address ..." +# to "service dhcpv6-server shared-network-name ... static-mapping 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) -- cgit v1.2.3