#!/usr/bin/env bash

LOGIN=_LOGIN_
PASSWORD=_PASSWORD_
REMOTEIP=_REMOTEIP_
REMOTEIPLOCAL=_LOCALPREFIX_.0.1
REMOTENAME=PPTP

CHAPSECRETS=/etc/ppp/chap-secrets
PEERFILE=/etc/ppp/peers/pptpserver
set -e

if [[ "$EUID" -ne 0 ]]; then
	echo "Sorry, you need to run this as root"
	exit 1
fi

if [[ ! -e $CHAPSECRETS ]] || [[ ! -r $CHAPSECRETS ]]; then
    echo "$CHAPSECRETS is not exist or not accessible."
    exit 1
fi

echo
echo "Installing necessary packets..."

apt-get install pptp-linux ppp
modprobe ppp_mppe

chmod u+s `which pptp`

echo
echo "Remote peer configuration..."

cat <<END >$PEERFILE
pty "pptp $REMOTEIP --nolaunchpppd"
name $LOGIN
noauth
nobsdcomp
nodeflate
usepeerdns
defaultroute
replacedefaultroute
refuse-pap
refuse-eap
refuse-chap
novj
remotename $REMOTENAME
require-mppe-128
END

echo
echo "Adding user to chap-secrets file..."
echo -e "$LOGIN\t    $REMOTENAME\t    $PASSWORD\t    *" >> $CHAPSECRETS