#!/bin/bash

CONFIG_DIR=/etc/openvpn/ca
echo ""
echo "List of OVPN keys:"
           mapfile -t keys < <(sudo cat ${CONFIG_DIR}/pki/index.txt | sed -ne 's/^V.*CN=\(\W\)*/\1/p' | grep -v server)
out="Name, Expires\n"
for i in "${!keys[@]}"; do
    IFS=" " read name <<< ${keys[i]}
    out+="${name},"
    out+=$(sudo cat ${CONFIG_DIR}/pki/issued/${name}.crt | grep ^'            Not After :' | sed -e 's/            Not After :// ; s/ GMT//g ; s/:[0-9][0-9] / /')
    out+="\n"
done
printf "$out" | column -ts $','
echo ""