#!/bin/bash
export LANG='en_US.UTF-8'
STATUS=/var/log/openvpn/openvpn-status.log

echo ""
echo "Active OVPN clients:"
mapfile -t common < <(sudo tail -n +4 ${STATUS} | ssed -R 's/\s+/_/g ; s/,/ /g' | grep ^CLIENT_LIST| sort | awk '{print $2}')
mapfile -t virtual < <(sudo tail -n +4 ${STATUS} | ssed -R 's/\s+/_/g ; s/,/ /g' | grep ^CLIENT_LIST| sort | awk '{print $4}')
mapfile -t sent < <(sudo tail -n +4 ${STATUS} | ssed -R 's/\s+/_/g ; s/,/ /g' | grep ^CLIENT_LIST| sort | awk '{print $6}')
mapfile -t received < <(sudo tail -n +4 ${STATUS} | ssed -R 's/\s+/_/g ; s/,/ /g' | grep ^CLIENT_LIST| sort | awk '{print $5}')
mapfile -t connected < <(sudo tail -n +4 ${STATUS} | ssed -R 's/\s+/_/g ; s/,/ /g; s/(Mon_|Tue_|Wed_|Sat_|Thu_|Sat_|Sun_)//g ; s/:[0-9][0-9]_/_/g' | grep ^CLIENT_LIST| sort | awk '{print $7}')
out2="Common Name,Virtual Address,Connected Since,▼,▲\n"
for k in "${!common[@]}"; do
    if [ "${common[k]}" != "UNDEF" ]; then
        rec=$((${received[k]}/1024/1024))Mb
        sen=$((${sent[k]}/1024/1024))Mb
        out2+=${common[k]},${virtual[k]},${connected[k]},${rec},${sen}"\n"
    fi
done
printf "$out2" | column -ts ',' | sed 's/_/ /g'