A way to have a GlobalProtect icon in your system tray if it doesn't show up on Ubuntu

globalprotect-tay-icon.py

#!/usr/bin/python

import os
import gi

gi.require_version('Gtk', '3.0')
gi.require_version('AppIndicator3', '0.1')

from gi.repository import Gtk as gtk, AppIndicator3 as appindicator
import subprocess
import time
import threading

def check(indicator):
  while True:
    if indicator:
      result = subprocess.run(['/bin/grep', 'gpd', '/proc/net/route'], capture_output=True)

      if result.returncode == 0:
        indicator.set_icon_full('krb-expiring-ticket', '')
      else:
        indicator.set_icon_full('krb-valid-ticket', '')

    time.sleep(5)

def main():
  indicator = appindicator.Indicator.new('customtray', 'krb-valid-ticket', appindicator.IndicatorCategory.APPLICATION_STATUS)
  indicator.set_status(appindicator.IndicatorStatus.ACTIVE)
  indicator.set_menu(menu())

  watch = threading.Thread(target=check, args=[indicator], daemon=True)
  watch.start()

  gtk.main()


def menu():
  menu = gtk.Menu()
  
  open_gp = gtk.MenuItem(label='Open...')
  open_gp.connect('activate', show)
  menu.append(open_gp)
  
  menu.show_all()

  return menu
  
def show(_):
  os.system('globalprotect launch-ui')

if __name__ == '__main__':
  try:
    main()
  except KeyboardInterrupt:
    exit()