check_vpn.sh

check_vpn.sh

#!/bin/bash
#
# Name: check_vpn
# Version: 1.0
# By MarcelFox

# COLORS & STYLES:
BOLD='\e[1m'
ITALIC='\e[3m'
NO_STL='\e[0m'
RED='\033[0;31m'
GREEN='\033[0;32m'
NO_COL='\033[0m'

# Configuration file and dir location:
vpn_file="FILE-NAME-EXAMPLE-HERE"
vpn_dir="/home/$USER/.openvpn"

if [ ! -f ${vpn_dir}/${vpn_file} ];
  then
    printf "\n${BOLD}vpn_file ${RED}not found${NO_COL}${BOLD} on ${vpn_dir}${NO_STL}\n\n";
    exit;
fi;

vpn_pid=$(ps aux | awk '/openvpn --daemon/ && !/awk/ {print $2}');
if [ ! -z "$vpn_pid" ];
  then
    printf "\n${BOLD}VPN running under pid ${GREEN}${BOLD}${vpn_pid}${NO_COL}, ${RED}${BOLD}kill${NO_COL} ${BOLD}proccess? [y/n]: ${NO_STL}";
    read var_decision;
    if [ -z $var_decision ];
      then
        printf "\n${BOLD}Please inform only 'y' or 'n'. Closing...${NO_STL}\n\n";
        exit;
    fi;
    if [ $var_decision == "y" ] || [ $var_decision == "Y" ];
      then
        sudo kill ${vpn_pid};
      else
        printf "${BOLD}Nothing done. VPN still running.${NO_STL}\n\n";
    fi;
  else
    printf "\n${BOLD}VPN not running, start it? [y/n]: ${NO_STL}";
    read var_decision;
    if [ -z $var_decision ];
      then
        printf "\n${BOLD}Please inform only 'y' or 'n'. Closing...${NO_STL}\n\n";
        exit;
    fi;
    if [ $var_decision == "y" ] || [ $var_decision == "Y" ];
      then
        sudo openvpn --daemon --config ${vpn_dir}/${vpn_file};
        vpn_pid=$(ps aux | awk '/openvpn --daemon/ && !/awk/ {print $2}');
        printf "${BOLD}VPN running under pid ${GREEN}${BOLD}${vpn_pid}${NO_STL}${NO_COL}\n\n";
      else
        printf "${BOLD}Ok, VPN not started.${NO_STL}\n\n";
    fi;
fi;

Usage:

You must inform the location of the p12 & key file under your .ovpn file, including your username (since $USER will not be interpreted by openvpn):

pkcs12 /home/MYUSER/.openvpn/MY-FILE.p12
tls-crypt /home/MYUSER/.openvpn/MY-KEY.key

---

Add the following line on ~/.bashrc

alias check_vpn='bash /home/$USER/check_vpn.sh'