Integrate ldap query to freeradius

[Boudjoudad Abdelkader]

Hello,
How can i integrate this ldap query in freeradius authentication to get the
group name of user ?

ldapsearch -h server.example.com -p 389  -x -W -D "cn=Directory Manager"
"uid=username" | grep memberOf | awk '{print $2}' | cut -d ',' -f -1

Thanks,