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aa-remove-unknown	File	2.86 KB	0755	2023-06-29 11:30:39
aa-status	File	7.11 KB	0755	2023-06-29 11:30:39
add-shell	File	695 B	0755	2016-01-26 18:17:55
addgroup	File	36.4 KB	0755	2015-07-02 20:11:22
adduser	File	36.4 KB	0755	2015-07-02 20:11:22
apparmor_status	File	7.11 KB	0755	2023-06-29 11:30:39
arp	File	54.09 KB	0755	2014-06-30 13:19:24
arpd	File	46.74 KB	0755	2019-04-16 12:37:11
chat	File	26.01 KB	0755	2020-07-23 15:09:52
chgpasswd	File	53.33 KB	0755	2024-02-07 10:59:49
chpasswd	File	49.43 KB	0755	2024-02-07 10:59:49
chroot	File	38.8 KB	0755	2017-03-02 18:07:22
cpgr	File	51.48 KB	0755	2024-02-07 10:59:49
cppw	File	51.48 KB	0755	2024-02-07 10:59:49
cron	File	43.43 KB	0755	2022-05-10 22:15:25
delgroup	File	16.13 KB	0755	2015-07-02 20:11:22
deluser	File	16.13 KB	0755	2015-07-02 20:11:22
dnsmasq	File	452.91 KB	0755	2024-04-23 19:46:09
dpkg-divert	File	0 B	0	1970-01-01 00:00:00
dpkg-preconfigure	File	3.52 KB	0755	2019-05-08 18:33:33
dpkg-reconfigure	File	4.23 KB	0755	2019-05-08 18:33:33
dpkg-statoverride	File	0 B	0	1970-01-01 00:00:00
e2freefrag	File	10.24 KB	0755	2022-06-03 20:47:31
e4defrag	File	26.53 KB	0755	2022-06-03 20:47:31
faillock	File	14.4 KB	0755	2024-03-19 16:18:59
fanatic	File	35.21 KB	0755	2017-12-12 16:13:01
fanctl	File	41.97 KB	0755	2019-04-23 10:35:14
fdformat	File	22.57 KB	0755	2022-06-14 21:28:54
filefrag	File	14.31 KB	0755	2022-06-03 20:47:31
genl	File	46.69 KB	0755	2019-04-16 12:37:11
groupadd	File	57.42 KB	0755	2024-02-07 10:59:49
groupdel	File	65.83 KB	0755	2024-02-07 10:59:49
groupmod	File	67.7 KB	0755	2024-02-07 10:59:49
grpck	File	53.31 KB	0755	2024-02-07 10:59:49
grpconv	File	49.19 KB	0755	2024-02-07 10:59:49
grpunconv	File	49.2 KB	0755	2024-02-07 10:59:49
iconvconfig	File	26.66 KB	0755	2025-02-07 13:34:28
invoke-rc.d	File	19.41 KB	0755	2016-11-29 17:28:22
ip6tables-apply	File	6.85 KB	0755	2016-02-19 15:20:21
iptables-apply	File	6.85 KB	0755	2016-02-19 15:20:21
ldattach	File	26.63 KB	0755	2022-06-14 21:28:54
logrotate	File	63.11 KB	0755	2017-08-10 15:16:07
mkinitramfs	File	10.24 KB	0755	2019-10-07 10:53:35
mklost+found	File	10.25 KB	0755	2022-06-03 20:47:31
netplan	File	17.94 KB	0755	2019-09-27 16:27:57
newusers	File	73.84 KB	0755	2024-02-07 10:59:49
nfnl_osf	File	14.37 KB	0755	2016-02-19 15:21:11
nologin	File	5.95 KB	0755	2024-02-07 10:59:50
pam-auth-update	File	19.09 KB	0755	2024-03-19 16:16:59
pam_getenv	File	2.82 KB	0755	2024-03-19 16:16:59
pam_timestamp_check	File	10.38 KB	0755	2024-03-19 16:18:59
pppd	File	385.73 KB	4754	2020-07-23 15:09:52
pppdump	File	18.1 KB	0755	2020-07-23 15:09:52
pppoe-discovery	File	18 KB	0755	2020-07-23 15:09:52
pppstats	File	13.99 KB	0755	2020-07-23 15:09:51
pwck	File	45.36 KB	0755	2024-02-07 10:59:49
pwconv	File	41.27 KB	0755	2024-02-07 10:59:49
pwunconv	File	36.43 KB	0755	2024-02-07 10:59:49
readprofile	File	14.52 KB	0755	2022-06-14 21:28:54
remove-shell	File	749 B	0755	2016-01-26 18:17:55
rfkill	File	10.29 KB	0755	2018-06-20 11:54:19
rmt	File	54.95 KB	0755	2023-12-06 12:12:24
rmt-tar	File	54.95 KB	0755	2023-12-06 12:12:24
rsyslogd	File	585.28 KB	0755	2022-05-23 17:31:02
rtcwake	File	38.8 KB	0755	2022-06-14 21:28:54
service	File	9.82 KB	0755	2016-09-12 08:57:57
setvesablank	File	10.27 KB	0755	2016-09-22 17:33:23
sshd	File	772.48 KB	0755	2025-02-18 15:23:47
tarcat	File	936 B	0755	2023-12-06 12:12:23
tunelp	File	22.53 KB	0755	2022-06-14 21:28:54
tzconfig	File	106 B	0755	2025-04-03 16:57:11
update-alternatives	File	46.61 KB	0755	2022-05-27 10:37:03
update-ca-certificates	File	5.25 KB	0755	2024-09-25 19:45:49
update-initramfs	File	8.38 KB	0755	2019-10-07 10:53:35
update-mime	File	8.84 KB	0755	2015-10-30 15:39:30
update-passwd	File	30.41 KB	0755	2016-01-02 23:13:25
update-rc.d	File	14.1 KB	0755	2016-02-29 12:24:38
useradd	File	118.72 KB	0755	2024-02-07 10:59:49
userdel	File	81.92 KB	0755	2024-02-07 10:59:49
usermod	File	118.5 KB	0755	2024-02-07 10:59:49
vcstime	File	6.26 KB	0755	2016-09-22 17:33:23
vigr	File	55.7 KB	0755	2024-02-07 10:59:49
vipw	File	55.7 KB	0755	2024-02-07 10:59:49
visudo	File	187.89 KB	0755	2025-06-26 17:58:07
zic	File	50.54 KB	0755	2025-02-07 13:34:28

#!/usr/bin/python3
#
# Copyright (C) 2016 Canonical, Ltd.
# Author: Martin Pitt <martin.pitt@ubuntu.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 3.
#
# 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/>.

'''netplan command line'''

import argparse
import logging
import os
import sys
import re
import shutil
import subprocess
from glob import glob

import yaml

path_generate = os.environ.get('NETPLAN_GENERATE_PATH', '/lib/netplan/generate')

NM_SERVICE_NAME = 'NetworkManager.service'
NM_SNAP_SERVICE_NAME = 'snap.network-manager.networkmanager.service'

#
# helper functions
#

def parse_args():
    parser = argparse.ArgumentParser(description='netplan commands')
    parser.add_argument('--debug', action='store_true',
                        help='Enable debug messages')
    subparsers = parser.add_subparsers(title='Available commands (see "netplan <command> --help")',
                                       metavar='', dest='command')

# command: generate
    p_generate = subparsers.add_parser('generate',
                                       help='Generate backend specific configuration files from /etc/netplan/*.yaml.')
    p_generate.add_argument('--root-dir',
                            help='Search for and generate configuration files in this root directory instead of /')

# command: apply
    p_generate = subparsers.add_parser('apply',
                                       help='Apply current netplan config to running system (use with care!)')

# command: ifupdown-migrate
    p_ifupdown = subparsers.add_parser('ifupdown-migrate',
                                       help='Try to convert /etc/network/interfaces to netplan. '
                                       'If successful, disable /etc/network/interfaces.')
    p_ifupdown.add_argument('--root-dir',
                            help='Search for and generate configuration files in this root directory instead of /')
    p_ifupdown.add_argument('--dry-run', action='store_true',
                            help='Print converted netplan configuration to stdout instead of writing/changing files')

args = parser.parse_args()

if not args.command:
        parser.error('You need to specify a command')
    return args

def is_nm_snap_enabled():  # pragma: nocover (covered in autopkgtest)
    return subprocess.call(['systemctl', '--quiet', 'is-enabled', NM_SNAP_SERVICE_NAME], stderr=subprocess.DEVNULL) == 0

def nmcli(args):  # pragma: nocover (covered in autopkgtest)
    binary_name = 'nmcli'

if is_nm_snap_enabled():
        binary_name = 'network-manager.nmcli'

subprocess.check_call([binary_name] + args, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)

def nm_running():  # pragma: nocover (covered in autopkgtest)
    '''Check if NetworkManager is running'''

try:
        nmcli(['general'])
        return True
    except (OSError, subprocess.SubprocessError):
        return False

def systemctl_network_manager(action):  # pragma: nocover (covered in autopkgtest)
    service_name = NM_SERVICE_NAME

# If the network-manager snap is installed use its service
    # name rather than the one of the deb packaged NetworkManager
    if is_nm_snap_enabled():
        service_name = NM_SNAP_SERVICE_NAME

subprocess.check_call(['systemctl', action, '--no-block', service_name])

def replug(device):  # pragma: nocover (covered in autopkgtest)
    '''Unbind and rebind device if it is down'''

devdir = os.path.join('/sys/class/net', device)

try:
        with open(os.path.join(devdir, 'operstate')) as f:
            state = f.read().strip()
            if state != 'down':
                logging.debug('device %s operstate is %s, not replugging', device, state)
                return False
    except IOError as e:
        logging.error('Cannot determine operstate of %s: %s', device, str(e))
        return False

# /sys/class/net/ens3/device -> ../../../virtio0
    # /sys/class/net/ens3/device/driver -> ../../../../bus/virtio/drivers/virtio_net
    try:
        devname = os.path.basename(os.readlink(os.path.join(devdir, 'device')))
    except IOError as e:
        logging.debug('Cannot replug %s: cannot read link %s/device: %s', device, devdir, str(e))
        return False

try:
        # we must resolve symlinks here as the device dir will be gone after unbind
        subsystem = os.path.realpath(os.path.join(devdir, 'device', 'subsystem'))
        subsystem_name = os.path.basename(subsystem)
        driver = os.path.realpath(os.path.join(devdir, 'device', 'driver'))
        driver_name = os.path.basename(driver)
        if driver_name == 'mac80211_hwsim':
            logging.debug('replug %s: mac80211_hwsim does not support rebinding, ignoring', device)
            return False
        # workaround for https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1630285
        if driver_name == 'mwifiex_pcie':
            logging.debug('replug %s: mwifiex_pcie crashes on rebinding, ignoring', device)
            return False
        # workaround for https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1729573
        if subsystem_name == 'xen' and driver_name == 'vif':
            logging.debug('replug %s: xen:vif fails on rebinding, ignoring', device)
            return False
        # workaround for problem with ath9k_htc module: this driver is async and does not support
        # sequential unbind / rebind, one soon after the other
        if driver_name == 'ath9k_htc':
            logging.debug('replug %s: ath9k_htc does not support rebinding, ignoring', device)
            return False
        # workaround for brcmfmac, interface will be gone after unbind
        if 'brcmfmac' in driver_name:
            logging.debug('replug %s: brcmfmac drivers do not support rebinding, ignoring', device)
            return False
        # workaround for ath6kl_sdio, interface does not work after unbinding
        if 'ath6kl_sdio' in driver_name:
            logging.debug('replug %s: ath6kl_sdio driver does not support rebinding, ignoring', device)
            return False
        # workaround for qeth: driver does not recognize unbind command
        # https://bugs.launchpad.net/ubuntu/+source/netplan.io/+bug/1756322
        if driver_name == 'qeth':
            logging.debug('replug %s: qeth driver do not support rebinding, ignoring (LP: #1756322)', device)
            return False
        logging.debug('replug %s: unbinding %s from %s', device, devname, driver)
        with open(os.path.join(driver, 'unbind'), 'w') as f:
            f.write(devname)
        logging.debug('replug %s: rebinding %s to %s', device, devname, driver)
        with open(os.path.join(driver, 'bind'), 'w') as f:
            f.write(devname)
    except IOError as e:
        logging.error('Cannot replug %s: %s', device, str(e))
        return False

return True

def _ifupdown_lines_from_file(rootdir, path):
    '''Return normalized lines from ifupdown config

This resolves "source" and "source-directory" includes.
    '''
    def expand_source_arg(rootdir, curdir, line):
        arg = line.split()[1]
        if arg.startswith('/'):
            return rootdir + arg
        else:
            return curdir + '/' + arg

lines = []
    rootdir_len = len(rootdir) + 1
    try:
        with open(rootdir + '/' + path) as f:
            logging.debug('reading %s', f.name)
            for line in f:
                # normalize, strip empty lines and comments
                line = line.strip()
                if not line or line.startswith('#'):
                    continue

if line.startswith('source-directory '):
                    valid_re = re.compile('^[a-zA-Z0-9_-]+$')
                    d = expand_source_arg(rootdir, os.path.dirname(f.name), line)
                    for f in os.listdir(d):
                        if valid_re.match(f):
                            lines += _ifupdown_lines_from_file(rootdir, os.path.join(d[rootdir_len:], f))
                elif line.startswith('source '):
                    for f in glob(expand_source_arg(rootdir, os.path.dirname(f.name), line)):
                        lines += _ifupdown_lines_from_file(rootdir, f[rootdir_len:])
                else:
                    lines.append(line)
    except FileNotFoundError:
        logging.debug('%s/%s does not exist, ignoring', rootdir, path)
    return lines

def parse_ifupdown(rootdir='/'):
    '''Parse ifupdown configuration.

Return (iface_name →  family → {method, options}, auto_ifaces: set) tuple
    on successful parsing, or a ValueError when encountering an invalid file or
    ifupdown features which are not supported (such as "mapping").

options is itself a dictionary option_name → value.
    '''
    # expected number of fields for every possible keyword, excluding the keyword itself
    fieldlen = {'auto': 1, 'allow-auto': 1, 'allow-hotplug': 1, 'mapping': 1, 'no-scripts': 1, 'iface': 3}

# read and normalize all lines from config, with resolving includes
    lines = _ifupdown_lines_from_file(rootdir, '/etc/network/interfaces')

ifaces = {}
    auto = set()
    in_options = None  # interface name if parsing options lines after iface stanza
    in_family = None

# we now have resolved all includes and normalized lines
    for line in lines:
        fields = line.split()

try:
            # does the line start with a known stanza field?
            exp_len = fieldlen[fields[0]]
            logging.debug('line fields %s (expected length: %i)', fields, exp_len)
            in_options = None  # stop option line parsing of iface stanza
            in_family = None
        except KeyError:
            # no known stanza field, are we in an iface stanza and parsing options?
            if in_options:
                logging.debug('in_options %s, parsing as option: %s', in_options, line)
                ifaces[in_options][in_family]['options'][fields[0]] = line.split(maxsplit=1)[1]
                continue
            else:
                raise ValueError('Unknown stanza type %s' % fields[0])

# do we have the expected #parameters?
        if len(fields) != exp_len + 1:
            raise ValueError('Expected %i fields for stanza type %s but got %i' %
                             (exp_len, fields[0], len(fields) - 1))

# we have a valid stanza line now, handle them
        if fields[0] in ('auto', 'allow-auto', 'allow-hotplug'):
            auto.add(fields[1])
        elif fields[0] == 'mapping':
            raise ValueError('mapping stanza is not supported')
        elif fields[0] == 'no-scripts':
            pass  # ignore these
        elif fields[0] == 'iface':
            if fields[2] not in ('inet', 'inet6'):
                raise ValueError('Unknown address family %s' % fields[2])
            if fields[3] not in ('loopback', 'static', 'dhcp'):
                raise ValueError('Unsupported method %s' % fields[3])
            in_options = fields[1]
            in_family = fields[2]
            ifaces.setdefault(fields[1], {})[in_family] = {'method': fields[3], 'options': {}}
        else:
            raise NotImplementedError('stanza type %s is not implemented' % fields[0])  # pragma nocover

logging.debug('final parsed interfaces: %s; auto ifaces: %s', ifaces, auto)
    return (ifaces, auto)

#
# implementation of the top-level commands
#

def command_generate():
    argv = [path_generate]
    if args.root_dir:
        argv += ['--root-dir', args.root_dir]
    logging.debug('command generate: running %s', argv)
    # FIXME: os.execv(argv[0], argv) would be better but fails coverage
    sys.exit(subprocess.call(argv))

def command_apply():  # pragma: nocover (covered in autopkgtest)
    # if we are inside a snap, then call dbus to run netplan apply instead
    if "SNAP" in os.environ:
        # TODO: maybe check if we are inside a classic snap and don't do
        # this if we are in a classic snap?
        busctl = shutil.which("busctl")
        if busctl is None:
            raise RuntimeError("missing busctl utility")
        res = subprocess.call([busctl, "call", "--quiet", "--system",
                               "io.netplan.Netplan",  # the service
                               "/io/netplan/Netplan",  # the object
                               "io.netplan.Netplan",  # the interface
                               "Apply",  # the method
                               ])
        if res != 0:
            if res == 130:
                raise PermissionError(
                    "failed to communicate with dbus service")
            elif res == 1:
                raise RuntimeError(
                    "failed to communicate with dbus service")
            sys.exit(res)
        else:
            return

if subprocess.call([path_generate]) != 0:
        sys.exit(1)

devices = os.listdir('/sys/class/net')

restart_networkd = bool(glob('/run/systemd/network/*netplan-*'))
    restart_nm = bool(glob('/run/NetworkManager/system-connections/netplan-*'))

# stop backends
    if restart_networkd:
        logging.debug('netplan generated networkd configuration exists, restarting networkd')
        subprocess.check_call(['systemctl', 'stop', '--no-block', 'systemd-networkd.service', 'netplan-wpa@*.service'])
    else:
        logging.debug('no netplan generated networkd configuration exists')

if restart_nm:
        logging.debug('netplan generated NM configuration exists, restarting NM')
        if nm_running():
            # restarting NM does not cause new config to be applied, need to shut down devices first
            for device in devices:
                # ignore failures here -- some/many devices might not be managed by NM
                try:
                    nmcli(['device', 'disconnect', device])
                except subprocess.CalledProcessError:
                    pass

systemctl_network_manager('stop')
    else:
        logging.debug('no netplan generated NM configuration exists')

# force-hotplug all "down" network interfaces to apply renames
    any_replug = False
    for device in devices:
        if not os.path.islink('/sys/class/net/' + device):
            continue
        if replug(device):
            any_replug = True
        else:
            # if the interface is up, we can still apply .link file changes
            logging.debug('netplan triggering .link rules for %s', device)
            with open(os.devnull, 'w') as fd:
                subprocess.check_call(['udevadm', 'test-builtin',
                                       'net_setup_link',
                                       '/sys/class/net/' + device],
                                      stdout=fd, stderr=fd)
    if any_replug:
        subprocess.check_call(['udevadm', 'settle'])

# (re)start backends
    if restart_networkd:
        subprocess.check_call(['systemctl', 'start', '--no-block', 'systemd-networkd.service'] +
                              [os.path.basename(f) for f in glob('/run/systemd/system/*.wants/netplan-wpa@*.service')])
    if restart_nm:
        systemctl_network_manager('start')

def command_ifupdown_migrate():
    netplan_config = {}
    try:
        ifaces, auto_ifaces = parse_ifupdown(args.root_dir or '')
    except ValueError as e:
        logging.error(str(e))
        sys.exit(2)
    for iface, family_config in ifaces.items():
        for family, config in family_config.items():
            logging.debug('Converting %s family %s %s', iface, family, config)
            if iface not in auto_ifaces:
                logging.error('%s: non-automatic interfaces are not supported', iface)
                sys.exit(2)
            if config['method'] == 'loopback':
                # both systemd and modern ifupdown set up lo automatically
                logging.debug('Ignoring loopback interface %s', iface)
            elif config['method'] == 'dhcp':
                if config['options']:
                    logging.error('%s: options are not supported for dhcp method', iface)
                    sys.exit(2)
                c = netplan_config.setdefault('network', {}).setdefault('ethernets', {}).setdefault(iface, {})
                if family == 'inet':
                    c['dhcp4'] = True
                else:
                    assert family == 'inet6'
                    c['dhcp6'] = True
            else:
                logging.error('%s: method %s is not supported', iface, config['method'])
                sys.exit(2)

if_config = os.path.join(args.root_dir or '/', 'etc/network/interfaces')

if netplan_config:
        netplan_config['network']['version'] = 2
        netplan_yaml = yaml.dump(netplan_config)
        if args.dry_run:
            print(netplan_yaml)
        else:
            dest = os.path.join(args.root_dir or '/', 'etc/netplan/10-ifupdown.yaml')
            try:
                os.makedirs(os.path.dirname(dest))
            except FileExistsError:
                pass
            try:
                with open(dest, 'x') as f:
                    f.write(netplan_yaml)
            except FileExistsError:
                logging.error('%s already exists; remove it if you want to run the migration again', dest)
                sys.exit(3)
            logging.info('migration complete, wrote %s', dest)
    else:
        logging.info('ifupdown does not configure any interfaces, nothing to migrate')

if not args.dry_run:
        logging.info('renaming %s to %s.netplan-converted', if_config, if_config)
        os.rename(if_config, if_config + '.netplan-converted')

#
# main
#

args = parse_args()

if args.debug:
    logging.basicConfig(level=logging.DEBUG, format='%(levelname)s:%(message)s')
    os.environ['G_MESSAGES_DEBUG'] = 'all'
else:
    logging.basicConfig(level=logging.INFO, format='%(message)s')

eval('command_' + args.command.replace('-', '_'))()

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