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#!/usr/bin/env python3
#
# Copyright (C) 2019-2020 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/>.
import os
from netifaces import interfaces
from sys import exit
from time import sleep
from vyos.config import Config
from vyos.configdict import dict_merge
from vyos.template import render
from vyos.util import cmd
from vyos.validate import is_addr_assigned
from vyos.xml import defaults
from vyos import ConfigError
from vyos import airbag
airbag.enable()
curlrc_config = r'/etc/curlrc'
ssh_config = r'/etc/ssh/ssh_config'
systemd_action_file = '/lib/systemd/system/ctrl-alt-del.target'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['system', 'option']
options = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
# We have gathered the dict representation of the CLI, but there are default
# options which we need to update into the dictionary retrived.
default_values = defaults(base)
options = dict_merge(default_values, options)
return options
def verify(options):
if 'http_client' in options:
config = options['http_client']
if 'source_interface' in config:
if not config['source_interface'] in interfaces():
raise ConfigError(f'Source interface {source_interface} does not '
f'exist'.format(**config))
if {'source_address', 'source_interface'} <= set(config):
raise ConfigError('Can not define both HTTP source-interface and source-address')
if 'source_address' in config:
if not is_addr_assigned(config['source_address']):
raise ConfigError('No interface with give address specified!')
if 'ssh_client' in options:
config = options['ssh_client']
if 'source_address' in config:
if not is_addr_assigned(config['source_address']):
raise ConfigError('No interface with give address specified!')
return None
def generate(options):
render(curlrc_config, 'system/curlrc.tmpl', options)
render(ssh_config, 'system/ssh_config.tmpl', options)
return None
def apply(options):
# System bootup beep
if 'startup_beep' in options:
cmd('systemctl enable vyos-beep.service')
else:
cmd('systemctl disable vyos-beep.service')
# Ctrl-Alt-Delete action
if os.path.exists(systemd_action_file):
os.unlink(systemd_action_file)
if 'ctrl_alt_del' in options:
if options['ctrl_alt_del'] == 'reboot':
os.symlink('/lib/systemd/system/reboot.target', systemd_action_file)
elif options['ctrl_alt_del'] == 'poweroff':
os.symlink('/lib/systemd/system/poweroff.target', systemd_action_file)
# Configure HTTP client
if 'http_client' not in options:
if os.path.exists(curlrc_config):
os.unlink(curlrc_config)
# Configure SSH client
if 'ssh_client' not in options:
if os.path.exists(ssh_config):
os.unlink(ssh_config)
# Reboot system on kernel panic
with open('/proc/sys/kernel/panic', 'w') as f:
if 'reboot_on_panic' in options:
f.write('60')
else:
f.write('0')
# tuned - performance tuning
if 'performance' in options:
cmd('systemctl restart tuned.service')
# wait until daemon has started before sending configuration
while (int(os.system('systemctl is-active --quiet tuned.service')) != 0):
sleep(0.250)
cmd('tuned-adm profile network-{performance}'.format(**options))
else:
cmd('systemctl stop tuned.service')
# Keyboard layout - there will be always the default key inside the dict
# but we check for key existence anyway
if 'keyboard_layout' in options:
cmd('loadkeys -C /dev/console {keyboard_layout}'.format(**options))
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)
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