#!/bin/sh
# Filename:      grml-vpnc-tugraz
# Purpose:       connect via vpnc in VC-Graz/TU Graz (www.vc-graz.ac.at / www.tugraz.at)
# Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>
# Bug-Reports:   see http://grml.org/bugs/
# License:       This file is licensed under the GPL v2.
# Latest change: Tue Mar 28 10:02:46 CEST 2006 [mika]
################################################################################

# Documentation:
# http://www.zid.tugraz.at/ki/netz/extern/vpn/

LANG=C
LC_ALL=C

if [ "$UID" != 0 ];  then
  sudo $0
  exit
fi

function typeofservice() {
NETWORK=$(dialog --stdout --clear --title "foobar" --menu \
"This script is a submenu of grml-network to set up an internet connection

Notice if you want to connect to WLAN at TU Graz:
Make sure you have a connection to the access point and an ip-address.
Run 'iwconfig \$DEVICE essid tug ; dhclient \$DEVICE'." 0 0 0 \
"WLAN"   "Connect via WLAN to TU Graz network" \
"VCGraz" "Connect to VC-Graz (not yet tested - use grml-pptp-vcgraz!)" \
"External" "External connection (not yet tested!)" \
"Exit"   "Exit this program")

retval=$?

case $retval in
  0)
        if [ $NETWORK == WLAN ]; then
         GATEWAY=129.27.200.1
         # GATEWAY=172.27.12.2
         ACCOUNT='Account information - your TUGOnline username'
        fi

        if [ $NETWORK == VCGraz ]; then
         GATEWAY=10.0.0.1
         ACCOUNT='Account information - your account number'
        fi

        if [ $NETWORK == External ]; then
         GATEWAY=129.27.200.1
         ACCOUNT='Account information - account number'
        fi
        ;;
  1)
        echo "Cancel pressed." ; exit
        ;;
  255)
        echo "ESC pressed." ; exit
        ;;
esac
}

runit(){
echo "# vpnc at $NETWORK" > /etc/vpnc/vpnctugraz.conf
echo "
Debug 0
IKE DH Group dh2
Perfect Forward Secrecy dh2
IPSec gateway $GATEWAY
IPSec ID default
IPSec secret default
Xauth username $ACCOUNTNAME
Xauth password $PASSWORD

" >> /etc/vpnc/vpnctugraz.conf

echo -e "#!/bin/sh\nLANG=C\n" > /etc/init.d/vpnctug
cat >> /etc/init.d/vpnctug << "EOF"
case "$1" in
  start)
    echo "Starting vpnc"
#    route del default
#    vpnc /etc/vpnc/vpnctugraz.conf
    vpnc-connect /etc/vpnc/vpnctugraz.conf
#    route add default dev tun0
    ;;

  stop)
    echo "Stopping vpnc"
    /usr/sbin/vpnc-disconnect
    killall -HUP vpnc
    ;;

  *)
    echo "Usage: /etc/init.d/vpnctug {start|stop}" >&2
    ;;

esac

exit 0
EOF

chmod 600 /etc/vpnc/vpnctugraz.conf
chmod +x /etc/init.d/vpnctug
/etc/init.d/vpnctug start
}

typeofservice
if [ -z "$ACCOUNTNAME" ] || [ -z "$PASSWORD" ] ; then
  ACCOUNTNAME=$(dialog --stdout --title "vpnc in $NETWORK" --inputbox "${ACCOUNT}:" 0 0) || exit 0
  PASSWORD=$(dialog --stdout --title "vpnc in $NETWORK" --passwordbox "Account password (hidden typing)" 0 40) || exit 0
  [ -z "$ACCOUNTNAME" ] && exit 1
  [ -z "$PASSWORD" ] && exit 1
  runit
else
  runit
fi

## END OF FILE #################################################################