is_connected_via_openvpn.sh

#!/bin/bash
set -eu -o pipefail

# Check if your external IP address is in an Openvpn client
# config file.
#
#
# Usage: ./is_connected_via_openvpn.sh [openvpn-vpn-config-path]
# Defaults to checking /etc/openvpn/*.conf
#
#
# Gets external IP address with curl from api.ipify.org
# Uses dig to query any DNS names in openvpn config files
#
#
openvpn_configs_path="${1:-/etc/openvpn/*.conf}"
is_connected_via_openvpn() {
    proton_ips=$(awk '/remote / {print $2}' $openvpn_configs_path | sort -u | xargs dig +short)
    my_ip=$(curl -s https://api.ipify.org)
    if grep $my_ip <<< $(echo $proton_ips) >/dev/null;
    then
        echo "Is using openvpn"
        return 0
    else
        echo "Not using openvpn"
        return 1
    fi
}

is_connected_via_openvpn