ras_nordvpn

#! /bin/bash
# $PROG: shell script for connecting NordVPN service with GUI
# openvpn,zenity must be installed
# nordvpn ovpn file must be store in /etc/openvpn
# follow instruction download nordvpn ovpn file @ https://pimylifeup.com/raspberry-pi-nordvpn/
# must using auto login,input these commands as below
#
# cd /etc/openvpn
# sudo echo "nordvpn_userid" > pass.txt  ##change to your nord_id
# sudo echo "nordvpn_password" >> pass.txt   ##change to your nord_password
# sudo chmod 600 pass.txt
# sudo for i in *.ovpn ; do sed -i 's/^auth-user-pass$/auth-user-pass pass.txt/' "$i" ; done

f_main(){
    zenity --list --title="NordVPN" \
    --column="Action" \
    "Connect VPN service" \
    "Disconnect VPN service" \
    "Get My IP"
}

n_vpn(){
    #pick sg,jp,hk server only
    server=($(ls jp*.ovpn sg*.ovpn hk*.ovpn kr*.ovpn))
    howmany=${#server[@]}
    r_pick=${server[$RANDOM % ${howmany}]}
    echo "$r_pick"
}

cd /etc/openvpn || { echo "Cannot change to /etc/openvpn path" >&2 ; exit 1 ; }

choice=$(f_main)
r_server=$(n_vpn)

RET=0
case "$choice" in
       Connect*) process=$(pgrep openvpn)
             if [ -z "$process" ]  ; then
                 sudo openvpn "$r_server" 2> /dev/null >> /dev/null &
             else
                 zenity --warning  --title="NordVPN" \
                --width=200 --height=100 \
                --text="Already Connected"
                 RET=2
             fi
             ;;
    Disconnect*) sudo killall -9 openvpn &> /dev/null
             ;;
           Get*) zenity --info --text=$(wget -qO- ifconfig.co) \
                --title="MY IP" \
                --width=200 --height=100
             ;;

esac

exit $RET