# vi: ts=4 expandtab # # Copyright (C) 2012 Canonical Ltd. # Copyright (C) 2012, 2013 Hewlett-Packard Development Company, L.P. # Copyright (C) 2012 Yahoo! Inc. # # Author: Scott Moser # Author: Juerg Haefliger # Author: Joshua Harlow # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License version 3, 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 . # This is a util function to translate debian based distro interface blobs as # given in /etc/network/interfaces to an *somewhat* agnostic format for # distributions that use other formats. # # TODO(harlowja) remove when we have python-netcf active... # # The format is the following: # { # : { # # All optional (if not existent in original format) # "netmask": , # "broadcast": , # "gateway": , # "address": , # "bootproto": "static"|"dhcp", # "dns-search": , # "hwaddress": , # "auto": True (or non-existent), # "dns-nameservers": [, ...], # } # } # # Things to note, comments are removed, if a ubuntu/debian interface is # marked as auto then only then first segment (?) is retained, ie # 'auto eth0 eth0:1' just marks eth0 as auto (not eth0:1). # # Example input: # # auto lo # iface lo inet loopback # # auto eth0 # iface eth0 inet static # address 10.0.0.1 # netmask 255.255.252.0 # broadcast 10.0.0.255 # gateway 10.0.0.2 # dns-nameservers 98.0.0.1 98.0.0.2 # # Example output: # { # "lo": { # "auto": true # }, # "eth0": { # "auto": true, # "dns-nameservers": [ # "98.0.0.1", # "98.0.0.2" # ], # "broadcast": "10.0.0.255", # "netmask": "255.255.252.0", # "bootproto": "static", # "address": "10.0.0.1", # "gateway": "10.0.0.2" # } # } def translate_network(settings): # Get the standard cmd, args from the ubuntu format entries = [] for line in settings.splitlines(): line = line.strip() if not line or line.startswith("#"): continue split_up = line.split(None, 1) if len(split_up) <= 1: continue entries.append(split_up) # Figure out where each iface section is ifaces = [] consume = {} for (cmd, args) in entries: if cmd == 'iface': if consume: ifaces.append(consume) consume = {} consume[cmd] = args else: consume[cmd] = args # Check if anything left over to consume absorb = False for (cmd, args) in consume.iteritems(): if cmd == 'iface': absorb = True if absorb: ifaces.append(consume) # Now translate real_ifaces = {} for info in ifaces: if 'iface' not in info: continue iface_details = info['iface'].split(None) dev_name = None if len(iface_details) >= 1: dev = iface_details[0].strip().lower() if dev: dev_name = dev if not dev_name: continue iface_info = {} if len(iface_details) >= 3: proto_type = iface_details[2].strip().lower() # Seems like this can be 'loopback' which we don't # really care about if proto_type in ['dhcp', 'static']: iface_info['bootproto'] = proto_type # These can just be copied over for k in ['netmask', 'address', 'gateway', 'broadcast']: if k in info: val = info[k].strip().lower() if val: iface_info[k] = val # Name server info provided?? if 'dns-nameservers' in info: iface_info['dns-nameservers'] = info['dns-nameservers'].split() # Name server search info provided?? if 'dns-search' in info: iface_info['dns-search'] = info['dns-search'].split() # Is any mac address spoofing going on?? if 'hwaddress' in info: hw_info = info['hwaddress'].lower().strip() hw_split = hw_info.split(None, 1) if len(hw_split) == 2 and hw_split[0].startswith('ether'): hw_addr = hw_split[1] if hw_addr: iface_info['hwaddress'] = hw_addr real_ifaces[dev_name] = iface_info # Check for those that should be started on boot via 'auto' for (cmd, args) in entries: if cmd == 'auto': # Seems like auto can be like 'auto eth0 eth0:1' so just get the # first part out as the device name args = args.split(None) if not args: continue dev_name = args[0].strip().lower() if dev_name in real_ifaces: real_ifaces[dev_name]['auto'] = True return real_ifaces