# Copyright 2017 VyOS maintainers and contributors <maintainers@vyos.io> # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 of the License, or (at your option) any later version. # # This library 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 # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library. If not, see <http://www.gnu.org/licenses/>. """ The version data looks like: /* Warning: Do not remove the following line. */ /* === vyatta-config-version: "cluster@1:config-management@1:conntrack-sync@1:conntrack@1:dhcp-relay@1:dhcp-server@4:firewall@5:ipsec@4:nat@4:qos@1:quagga@2:system@8:vrrp@1:wanloadbalance@3:webgui@1:webproxy@1:zone-policy@1" === */ /* Release version: 1.2.0-rolling+201806131737 */ """ import re def get_component_version(string_line): """ Get component version dictionary from string return empty dictionary if string contains no config information or raise error if component version string malformed """ return_value = {} if re.match(r'/\* === vyatta-config-version:.+=== \*/$', string_line): if not re.match(r'/\* === vyatta-config-version:\s+"([\w,-]+@\d+:)+([\w,-]+@\d+)"\s+=== \*/$', string_line): raise ValueError("malformed configuration string: " + str(string_line)) for pair in re.findall(r'([\w,-]+)@(\d+)', string_line): if pair[0] in return_value.keys(): raise ValueError("duplicate unit name: \"" + str(pair[0]) + "\" in string: \"" + string_line + "\"") return_value[pair[0]] = int(pair[1]) return return_value def get_component_versions_from_file(config_file_name='/opt/vyatta/etc/config/config.boot'): """ Get component version dictionary parsing config file line by line """ f = open(config_file_name, 'r') for line_in_config in f: component_version = get_component_version(line_in_config) if component_version: return component_version raise ValueError("no config string in file:", config_file_name)