84 lines
2.8 KiB
Python
84 lines
2.8 KiB
Python
|
#!/usr/bin/env python3
|
||
|
|
|
||
|
|
# common.py - PVC daemon function library, common fuctions
|
||
|
|
# Part of the Parallel Virtual Cluster (PVC) system
|
||
|
|
#
|
||
|
|
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
|
||
|
|
#
|
||
|
|
# 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, either version 3 of the License, or
|
||
|
|
# (at your option) any later version.
|
||
|
|
#
|
||
|
|
# 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 <https://www.gnu.org/licenses/>.
|
||
|
|
#
|
||
|
|
###############################################################################
|
||
|
|
|
||
|
|
import subprocess
|
||
|
|
import threading
|
||
|
|
import signal
|
||
|
|
import os
|
||
|
|
import time
|
||
|
|
|
||
|
|
import pvcd.log as log
|
||
|
|
|
||
|
|
class OSDaemon(object):
|
||
|
|
def __init__(self, command, environment):
|
||
|
|
self.proc = subprocess.Popen(
|
||
|
|
command,
|
||
|
|
env=environment,
|
||
|
|
stdout=subprocess.PIPE,
|
||
|
|
stderr=subprocess.PIPE,
|
||
|
|
)
|
||
|
|
|
||
|
|
def signal(self, sent_signal):
|
||
|
|
signal_map = {
|
||
|
|
'hup': signal.SIGHUP,
|
||
|
|
'int': signal.SIGINT,
|
||
|
|
'term': signal.SIGTERM
|
||
|
|
}
|
||
|
|
self.proc.send_signal(signal_map[sent_signal])
|
||
|
|
|
||
|
|
def run_os_daemon(command_string, environment=None):
|
||
|
|
command = command_string.split()
|
||
|
|
print(' '.join(command))
|
||
|
|
daemon = OSDaemon(command, environment)
|
||
|
|
return daemon
|
||
|
|
|
||
|
|
# Run a oneshot command, optionally without blocking
|
||
|
|
def run_os_command(command_string, background=False, environment=None):
|
||
|
|
command = command_string.split()
|
||
|
|
if background:
|
||
|
|
def runcmd():
|
||
|
|
subprocess.run(
|
||
|
|
command,
|
||
|
|
env=environment,
|
||
|
|
stdout=subprocess.PIPE,
|
||
|
|
stderr=subprocess.PIPE,
|
||
|
|
)
|
||
|
|
thread = threading.Thread(target=runcmd, args=())
|
||
|
|
thread.start()
|
||
|
|
return 0, None, None
|
||
|
|
else:
|
||
|
|
command_output = subprocess.run(
|
||
|
|
command,
|
||
|
|
env=environment,
|
||
|
|
stdout=subprocess.PIPE,
|
||
|
|
stderr=subprocess.PIPE,
|
||
|
|
)
|
||
|
|
return command_output.returncode, command_output.stdout.decode('ascii'), command_output.stderr.decode('ascii')
|
||
|
|
|
||
|
|
# Reload the firewall rules of the system
|
||
|
|
def reload_firewall_rules(rules_dir):
|
||
|
|
log.echo('Updating firewall rules', '', 'o')
|
||
|
|
rules_file = '{}/base.nft'.format(rules_dir)
|
||
|
|
retcode, stdout, stderr = run_os_command('/usr/sbin/nft -f {}'.format(rules_file))
|
||
|
|
if retcode != 0:
|
||
|
|
log.echo('Failed to reload rules: {}'.format(stderr), '', 'e')
|