University of Potsdam WLAN-over-VPN wrapper

zeik.sh

#!/bin/sh
# University of Potsdam WLAN-over-VPN wrapper
VPNUSER=$(read -p "Username:")
#VPNUSER=johndoe

WLANIFACE=wlan0
VPNIFACE=zeik.tun0

# kill all remaining Cisco AnyConnect VPNs
pkill openconnect
[ "x$1" = "xstop" ] && exit 1

# determine hostname
essid=`iwgetid --raw $WLANIFACE`
case $essid in
    "Uni-WLAN-Wohnheim") host=wh group=wohnheim-wlan ;;
    "Universitaet Potsdam ZEIK") host=wlan group=WLAN ;;
    *) host=ssl group=SSLVPN
    ping -c 1 sslvpn.uni-potsdam.de || exit 1 ;;
esac                                                                                                 
host=${host}vpn.uni-potsdam.de

# connect to the VPN
echo "Connecting to $host:$group..."
openconnect $host --user=$VPNUSER --authgroup=$group \
  --verbose --syslog --background --interface=$VPNIFACE \
&& echo "Connected!"

# route all connections thru the VPN interface
if [ "$host" != "ssl" ]; then
    route add default dev $VPNIFACE
else
    route add uni-potsdam.de dev $VPNIFACE
fi