# Script to synchronize AD/LDAP users with OpenVPN config files and email user certificates and a setup guide to end users. This script is a very rudimentary hack to fill my purpose. It may or may not work for you. It could also be put to use with LDAP with minimal modification even though I wrote it for an Active Directory environment.
# Author:
# Josh North 2014-12-01
# josh.north@point808.com
# Free for use and modification. Credit is appreciated if you do anything with it but nothing is required.
# Theory:
# Basically, the script should be run on a cron schedule. At run, it searches all users in a specified AD group. It then checks to see if subdirectories exist for the user, if not, it decides to create them. It then loops through to look for directories that do not have a corresponding user in the AD list and deletes them. It technically (at this point) does not revoke access and restart the vpn, this is IMPORTANT, because in my setup we are authenticating against AD anyway as a second layer. This is not fully secure but like I said, it is a major work in progress.
echo -e "to: ${OAS_USRMAIL}\ncc: ${OAS_MAILADMIN}\nsubject: ${OAS_MAILSUBJ}\nHello ${OAS_USRFNAME},\n\nThis email is from ${OAS_ORGNAME} You are receiving it because your account has been granted remote access privileges via a secure VPN client.\n\nThere should be multiple attachments to this email. One is your OpenVPN configuration file (${s_user}.ovpn), and at least one User Guide document, though your administrator may have attached additional documents specific to your network. Please review the attached guides before contacting your support personell if you have any questions or problems.\n\nIMPORTANT! Please do NOT share the information contained in this email or the attached key file with anyone! This file identifies your computer to the network, and any other use opens the company network for hacking or other malicious behaviour.\n\nNOTE: You will be prompted for a user name and password when connecting to the VPN client. Your username will be your domain login name (${s_user}) and your password is the same as your domain password.\n"|(cat - && uuencode ${OAS_USERDIR}/${s_user}/${s_user}.ovpn ${s_user}.ovpn &&for s_file in ${OAS_ATTACHMENTS};do uuencode "${s_file}""$(basename "${s_file}")";done)| /usr/sbin/sendmail -t -F ${OAS_MAILFROM}
# Now we need to list all directories, and then run an ldap search to see if there is a matching user. If not, we'll figure out how to revoke their certs and then delete the config directory.
# source rsa vars to get ready to revoke
cd${OAS_RSADIR}
source ./vars
# go back to user directory
cd${OAS_USERDIR}
log "Beginning user deletion run"
# let's list the directories first, then on each dir, run a ldapsearch to see if user match. If not, delete and revoke.
for s_userd in ${OAS_USERDIR}
do
echo"${s_userd}"
# end of second looper. I think we are done for now
