opensnitch/ui/bin/opensnitch-ui
Gustavo Iñiguez Goia 4332469fc2 improved nodes connectivity handling
problem:
 - after losing network connectivity node<->server, the node didn't restore
   the connection. In reality, the connection with the server was not
   closed, but the notifications channel was closed due to inactivity
   after 20s.

set inactivity timeouts to 20s on both node and server. Previous
timeouts were 2h for the main connection and 20s for the streaming
channels (notifications).

- get rid of the logic to determine if the server is alive or not based
  on sending pings.
  Instead, use the connection events when a node connects/disconnects
  (Subscribe).
  The Ping call is still used to send the statistics.

other:
- fixed exception when updating the status of a node.
2021-04-11 20:55:14 +02:00

92 lines
3.3 KiB
Python
Executable file

#!/usr/bin/env python3
from PyQt5 import QtWidgets, QtGui, QtCore
import sys
import os
import time
import signal
import argparse
import logging
logging.getLogger().disabled = True
from concurrent import futures
import grpc
dist_path = '/usr/lib/python3/dist-packages/'
if dist_path not in sys.path:
sys.path.append(dist_path)
from opensnitch.service import UIService
from opensnitch.config import Config
import opensnitch.version
import opensnitch.ui_pb2
from opensnitch.ui_pb2_grpc import add_UIServicer_to_server
def on_exit():
app.quit()
server.stop(0)
sys.exit(0)
def supported_qt_version(major, medium, minor):
q = QtCore.QT_VERSION_STR.split(".")
return int(q[0]) >= major and int(q[1]) >= medium and int(q[2]) >= minor
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='OpenSnitch UI service.')
parser.add_argument("--socket", dest="socket", default="unix:///tmp/osui.sock", help="Path of the unix socket for the gRPC service (https://github.com/grpc/grpc/blob/master/doc/naming.md).", metavar="FILE")
parser.add_argument("--max-clients", dest="serverWorkers", default=10, help="Max number of allowed clients (incoming connections).")
args = parser.parse_args()
os.environ["QT_AUTO_SCREEN_SCALE_FACTOR"] = "1"
if supported_qt_version(5,6,0):
try:
# NOTE: maybe we also need Qt::AA_UseHighDpiPixmaps
QtCore.QApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling, True)
except Exception:
pass
locale = QtCore.QLocale.system()
i18n_path = os.path.dirname(os.path.realpath(opensnitch.__file__)) + "/i18n"
print("Loading translations:", i18n_path, "locale:", locale.name())
translator = QtCore.QTranslator()
translator.load(i18n_path + "/" + locale.name() + "/opensnitch-" + locale.name() + ".qm")
app = QtWidgets.QApplication(sys.argv)
app.installTranslator(translator)
service = UIService(app, on_exit)
# @doc: https://grpc.github.io/grpc/python/grpc.html#server-object
server = grpc.server(futures.ThreadPoolExecutor(),
options=(
# https://github.com/grpc/grpc/blob/master/doc/keepalive.md
# https://grpc.github.io/grpc/core/group__grpc__arg__keys.html
# send keepalive ping every 5 second, default is 2 hours)
('grpc.keepalive_time_ms', 5000),
# after 5s of inactivity, wait 20s and close the connection if
# there's no response.
('grpc.keepalive_timeout_ms', 20000),
('grpc.keepalive_permit_without_calls', True),
))
add_UIServicer_to_server(service, server)
if args.socket.startswith("unix://"):
socket = args.socket[7:]
socket = os.path.abspath(socket)
server.add_insecure_port("unix:%s" % socket)
else:
server.add_insecure_port(args.socket)
# https://stackoverflow.com/questions/5160577/ctrl-c-doesnt-work-with-pyqt
signal.signal(signal.SIGINT, signal.SIG_DFL)
try:
# print "OpenSnitch UI service running on %s ..." % socket
server.start()
app.exec_()
except KeyboardInterrupt:
on_exit()