#!/bin/bash 

#Version: 1.0
#Author: Gourav Shah <labs@initcron.org>
#http://www.initcron.org
###########################################################################
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
#############################################################################




echo "I: Installing PPTP VPN Server"
apt-get  install -yq  pptpd

echo "I: Backing up /etc/sysctl.conf to /etc/sysctl.conf.initcron before updating the file"
cp /etc/sysctl.conf /etc/sysctl.conf.initcron
sleep 1

echo "I: Enabling IP Forwarding in sysctl.conf..."
sed -i   "s/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1/g"  /etc/sysctl.conf
sleep 1

echo "I: Configuring PPTP Server.."
cp /etc/pptpd.conf /etc/pptpd.conf.initcron
echo "localip 10.0.0.1"      >> /etc/pptpd.conf
echo "remoteip 10.0.0.21-80" >> /etc/pptpd.conf
cp /etc/ppp/pptpd-options /etc/ppp/pptpd-options.initcron
echo "ms-dns  8.8.8.8"  >> /etc/ppp/pptpd-options
echo "ms-dns  8.8.4.4"  >> /etc/ppp/pptpd-options
sleep 1

echo -n "First VPN User to add: "
read  VPNUSER

echo -n "Password for $VPNUSER:  "
read  VPNUSERPASS

echo "$VPNUSER    pptpd    $VPNUSERPASS   *" >> /etc/ppp/chap-secrets
sleep 2
echo "I: Added First User... " 
echo "I: To add more users, edit /etc/ppp/chap-secrets. Make sure this file is only readable by root after you edit it."

echo "Starting PPTP VPN Server.."
/etc/init.d/pptpd restart
sleep 2 

echo "I: DONE "
echo "I: Make sure you have port 1723 open on the server to be accessible for the clients. "
echo "I: Enjoy the awesomeness. "
echo "I: For Issues, Features, enhancements contact labs@initcron.org "

sleep 2 

exit 0