better-lazy-connect.sh

#!/bin/bash
# assumes lazy-connect CLI is installed and initialised on your Mac, but does not work well all the times :/
# pre-requisite: grant Accessibility permission to the Apple Script under System Preferences ->

VPN_NAME="the-name-of-your-vpn-here"
VPN_IP="you-vpn-ip-here" # you can find this out from ifconfig when connected to the VPN, only first three decimal numbers from the IP are needed here.

function close_system_preferences()
{ # closes the System Preferences pane on Mac OS
  echo "Closing the System Preferences pane"
  osascript -e 'tell application "System Preferences" to close first window'
}

function is_vpn_connected()
{ # takes the IP of the VPN for which the connection status is to be checked
  sleep 3 # as reflecting the IP in ifconfig may take some time
  if ifconfig | grep -q "$1"; then
    return 0
  else
    return 1
  fi
}

function handle_preferences_error()
{
  osascript -e "
    try
    	tell application \"System Events\" to tell process ¬
    		\"System Preferences\" to click (buttons of sheet 1 of window 1 whose name is \"OK\")
    on error errMsg
    	do shell script \"logger -t 'AS DEBUG' \" & errMsg
    end try"
}

function connect_to_vpn()
{ # takes the name of the VPN to be connected to with lazy-connect CLI
  if lazy-connect "$1" && sleep 5 && is_vpn_connected "$2" ; then
    echo "Connected to the VPN $1 successfully using lazy-connect"
    return 0
  else
    echo "Could not connect to the VPN $1 using lazy-connect"
    handle_preferences_error
    close_system_preferences
    return 1
  fi
}

close_system_preferences
if ! is_vpn_connected $VPN_IP ; then
  echo "You are not connected to the VPN $VPN_NAME, trying to connect now"
  vpn_connect_success=1
  retry_attempt=0
  MAX_RETRIES=5
  while [[ $vpn_connect_success && $retry_attempt != "$MAX_RETRIES" ]] ; do
    if connect_to_vpn $VPN_NAME $VPN_IP ; then
      vpn_connect_success=0
      exit 0
    else
      echo "Retry attempt #${retry_attempt}"
      retry_attempt=$((retry_attempt+1))
    fi
  done
else
  echo "You are already connected to the VPN $VPN_NAME"
  exit 0
fi