cisco_secure_client_gui_autolaunch_mitigation.sh

#!/bin/bash
#
# MIT License
#
# Copyright (c) 2024 Simon Andersen
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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# The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# using /usr/bin/log requires admin privileges so the recommended way to run this is via Outset ( https://github.com/macadmins/outset ) in /usr/local/outset/login-privileged-every/
# This method is terribly race condition prone I know
# The Cisco Secure Client still pops up but goes away at least

# Using /usr/bin/log to examine the last 30 seconds of activity
LASTLOGIN=$(log show --last 30s --predicate 'process = "loginwindow" && message contains "is logged in"' --style compact | tail -n1 | awk '{print $1 " " $2}'|sed -E 's/\.[0-9]{3}$//')

# If the app is running...
if pgrep -x "Cisco Secure Client" ; then
   # Check whether it was launched by the LoginItemHelper process...
   if log show --start "$LASTLOGIN" --predicate 'process = "LoginItemHelper" && subsystem = "com.cisco.secureclient.vpn" && message = "Opening Cisco Secure Client app."' --style compact | tail +2 | tail -n1 | grep -q "Opening Cisco Secure Client app." ; then
      # ...and make sure it wasn't launched by TAL
      if ! log show --start "$LASTLOGIN" --predicate 'process = "loginwindow" && message contains "Launching:/Applications/Cisco/Cisco Secure Client.app"' | tail +2 | tail -n1 | grep -q "Cisco Secure Client.app" ; then
         pkill -x "Cisco Secure Client"
      fi
   fi
fi