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|
#!/usr/bin/env python3
#
# Copyright (C) 2018-2024 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 vyos.base import Warning
from vyos.config import Config
from vyos.configdict import is_node_changed
from vyos.configverify import verify_vrf
from vyos.utils.process import call
from vyos.template import render
from vyos import ConfigError
from vyos import airbag
airbag.enable()
rsyslog_conf = '/etc/rsyslog.d/00-vyos.conf'
logrotate_conf = '/etc/logrotate.d/vyos-rsyslog'
systemd_override = r'/run/systemd/system/rsyslog.service.d/override.conf'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['system', 'syslog']
if not conf.exists(base):
return None
syslog = conf.get_config_dict(base, key_mangling=('-', '_'),
get_first_key=True, no_tag_node_value_mangle=True)
syslog.update({ 'logrotate' : logrotate_conf })
tmp = is_node_changed(conf, base + ['vrf'])
if tmp: syslog.update({'restart_required': {}})
syslog = conf.merge_defaults(syslog, recursive=True)
if syslog.from_defaults(['global']):
del syslog['global']
if (
'global' in syslog
and 'preserve_fqdn' in syslog['global']
and conf.exists(['system', 'host-name'])
and conf.exists(['system', 'domain-name'])
):
hostname = conf.return_value(['system', 'host-name'])
domain = conf.return_value(['system', 'domain-name'])
fqdn = f'{hostname}.{domain}'
syslog['global']['local_host_name'] = fqdn
return syslog
def verify(syslog):
if not syslog:
return None
if 'host' in syslog:
for host, host_options in syslog['host'].items():
if 'protocol' in host_options and host_options['protocol'] == 'udp':
if 'format' in host_options and 'octet_counted' in host_options['format']:
Warning(f'Syslog UDP transport for "{host}" should not use octet-counted format!')
verify_vrf(syslog)
def generate(syslog):
if not syslog:
if os.path.exists(rsyslog_conf):
os.unlink(rsyslog_conf)
if os.path.exists(logrotate_conf):
os.unlink(logrotate_conf)
return None
render(rsyslog_conf, 'rsyslog/rsyslog.conf.j2', syslog)
render(systemd_override, 'rsyslog/override.conf.j2', syslog)
render(logrotate_conf, 'rsyslog/logrotate.j2', syslog)
# Reload systemd manager configuration
call('systemctl daemon-reload')
return None
def apply(syslog):
systemd_socket = 'syslog.socket'
systemd_service = 'syslog.service'
if not syslog:
call(f'systemctl stop {systemd_service} {systemd_socket}')
return None
# we need to restart the service if e.g. the VRF name changed
systemd_action = 'reload-or-restart'
if 'restart_required' in syslog:
systemd_action = 'restart'
call(f'systemctl {systemd_action} {systemd_service}')
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)
|
