## 070719.pptp_vpn_config


username=$1
passwort=$2
profile=fhl
kernelconfig=/usr/src/linux/.config
filepasswd=/etc/ppp/chap-secrets
fileprofile=/etc/ppp/peers/$profile
filepppoptions=/etc/ppp/options
modulconfig=/etc/modules.conf
if [ -f /etc/modules.d/ppp ] && modulconfig=/etc/modules.d/ppp 
if [ -f /etc/modutils/ppp ] && modulconfig=/etc/modutils/ppp


echo "pruefe kernelkonfig"
grep MPP $kernelconfig

echo "pruefe zu installierende Software"
pkt=pptp-linux
[ `dpkg --get-selections | grep "$pkt" | wc -l` -eq 0 ] &&  \
  apt-get install pptp-linux

echo "Modulkonfiguration anpassen"
f=$modulconfig
if [ ! -f "$f.org" ] && cp -p $f $f.org
cp -p $f $f.old
## evtl. Modul ppp_mpe hinzufuegen

echo "Profile fuer VPN-Verbindung anlegen"
f=$fileprofile
if [ ! -f "$f.org" ] && cp -p $f $f.org
cp -p $f $f.old
cat > $f <<EOF
name 192.168.39.1
lock
+mppe-128
+mschap-v2
user $username
#debug
nobsdcomp
noauth
#nodetach
#asyncmap 0
#proxyarp
#crtscts
pty "/usr/sbin/pptp 192.168.39.1 --nolaunchpppd"
persist
# if link is broken, try to reestablish it rather
# than exit immediately
usepeerdns
# eventually, cause a modification of /etc/resolv.conf to use 2
# DNS server whose addresses are provided by the peer.
# This may or may not be what you want to do, so be careful.
defaultroute
replacedefaultroute
## Use this PPP connection as the default route,
## i.e. by default, outgoing packets will be routed through it;
## also, restore the previous default route when the PPP
## connection comes down
#ipparam fhl
EOF

f=$filepppoptions
if [ ! -f "$f.org" ] && cp -p $f $f.org
cp -p $f $f.old
echo > $f

echo "Passwort hinterlegen"
f=$filepasswd
if [ ! -f "$f.org" ] && cp -p $f $f.org
cp -p $f $f.old
echo "$username  *  $passwort  *" >> $f
chmod 600 $f

echo "fertig."
echo "Starte den VPN-Tunnel mit  \"pon $profile\" und beende ihn mit \"poff\"."