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#!/usr/bin/env python3
#
# Copyright (C) 2019-2024 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 sys import exit
from time import sleep
from vyos.config import Config
from vyos.configverify import verify_source_interface
from vyos.configverify import verify_interface_exists
from vyos.system import grub_util
from vyos.template import render
from vyos.utils.dict import dict_search
from vyos.utils.file import write_file
from vyos.utils.kernel import check_kmod
from vyos.utils.process import cmd
from vyos.utils.process import is_systemd_service_running
from vyos.utils.network import is_addr_assigned
from vyos.utils.network import is_intf_addr_assigned
from vyos.configdep import set_dependents
from vyos.configdep import call_dependents
from vyos import ConfigError
from vyos import airbag
airbag.enable()
curlrc_config = r'/etc/curlrc'
ssh_config = r'/etc/ssh/ssh_config.d/91-vyos-ssh-client-options.conf'
systemd_action_file = '/lib/systemd/system/ctrl-alt-del.target'
usb_autosuspend = r'/etc/udev/rules.d/40-usb-autosuspend.rules'
kernel_dynamic_debug = r'/sys/kernel/debug/dynamic_debug/control'
time_format_to_locale = {
'12-hour': 'en_US.UTF-8',
'24-hour': 'en_GB.UTF-8'
}
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,
with_recursive_defaults=True)
if 'performance' in options:
# Update IPv4/IPv6 and sysctl options after tuned applied it's settings
set_dependents('ip_ipv6', conf)
set_dependents('sysctl', conf)
return options
def verify(options):
if 'http_client' in options:
config = options['http_client']
if 'source_interface' in config:
verify_interface_exists(config['source_interface'])
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:
address = config['source_address']
if not is_addr_assigned(config['source_address']):
raise ConfigError('No interface with address "{address}" configured!')
if 'source_interface' in config:
verify_source_interface(config)
if 'source_address' in config:
address = config['source_address']
interface = config['source_interface']
if not is_intf_addr_assigned(interface, address):
raise ConfigError(f'Address "{address}" not assigned on interface "{interface}"!')
return None
def generate(options):
render(curlrc_config, 'system/curlrc.j2', options)
render(ssh_config, 'system/ssh_config.j2', options)
render(usb_autosuspend, 'system/40_usb_autosuspend.j2', options)
cmdline_options = []
if 'kernel' in options:
if 'disable_mitigations' in options['kernel']:
cmdline_options.append('mitigations=off')
if 'disable_power_saving' in options['kernel']:
cmdline_options.append('intel_idle.max_cstate=0 processor.max_cstate=1')
grub_util.update_kernel_cmdline_options(' '.join(cmdline_options))
return None
def apply(options):
# System bootup beep
beep_service = 'vyos-beep.service'
if 'startup_beep' in options:
cmd(f'systemctl enable {beep_service}')
else:
cmd(f'systemctl disable {beep_service}')
# Ctrl-Alt-Delete action
if os.path.exists(systemd_action_file):
os.unlink(systemd_action_file)
if 'ctrl_alt_delete' in options:
if options['ctrl_alt_delete'] == 'reboot':
os.symlink('/lib/systemd/system/reboot.target', systemd_action_file)
elif options['ctrl_alt_delete'] == '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
timeout = '0'
if 'reboot_on_panic' in options:
timeout = '60'
with open('/proc/sys/kernel/panic', 'w') as f:
f.write(timeout)
# tuned - performance tuning
if 'performance' in options:
cmd('systemctl restart tuned.service')
# wait until daemon has started before sending configuration
while (not is_systemd_service_running('tuned.service')):
sleep(0.250)
cmd('tuned-adm profile network-{performance}'.format(**options))
else:
cmd('systemctl stop tuned.service')
call_dependents()
# 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 {keyboard_layout}'.format(**options))
# Enable/diable root-partition-auto-resize SystemD service
if 'root_partition_auto_resize' in options:
cmd('systemctl enable root-partition-auto-resize.service')
else:
cmd('systemctl disable root-partition-auto-resize.service')
# Time format 12|24-hour
if 'time_format' in options:
time_format = time_format_to_locale.get(options['time_format'])
cmd(f'localectl set-locale LC_TIME={time_format}')
# Reload UDEV, required for USB auto suspend
cmd('udevadm control --reload-rules')
# Enable/disable dynamic debugging for kernel modules
modules = ['wireguard']
modules_enabled = dict_search('kernel.debug', options) or []
for module in modules:
if module in modules_enabled:
check_kmod(module)
write_file(kernel_dynamic_debug, f'module {module} +p')
else:
write_file(kernel_dynamic_debug, f'module {module} -p')
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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