connect to vpn of university wuerzburg, germany (add credentials to separate conf file)

vpn-uniwue.sh

#!/bin/bash
#set -e

# script to connect to uni wuerzburg vpn
# https://www.rz.uni-wuerzburg.de/dienste/it_sicherheit/vpn/
#
# cisco password found by Chunguang Liang
# http://drliang.blogspot.de/2013/02/how-to-connect-vpn-of-uni-wuerzburg-via.html

LOG_FILE="/var/local/log/vpn-uniwue.log"
PID_FILE="/var/run/vpnc.pid" # default

SCRIPT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
CONF_FILE="${SCRIPT_ROOT}/vpn-uniwue.conf"

# structure of the conf file should be
#
# IPSec gateway 132.187.1.5
# IPSec ID Login
# IPSec secret 9dae7aa6ccfde46148d93351c7ab6861
# Xauth username sXXXXXXX
# Xauth password YYYYYYYY
#

if (( $EUID != 0 )); then
  echo "Please run as root"
  exit 1
fi

# check requirec packages
if ! command -v vpnc > /dev/null; then
	echo "installing vpnc via apt-get"
	sudo apt-get install --assume-yes vpnc
fi

# create log file
if [ ! -e "${LOG_FILE%/*}" ]; then
	echo "creating ${LOG_FILE%/*}"
	mkdir -p "${LOG_FILE%/*}"
fi
touch "$LOG_FILE"

# check if vpnc is running and quit it.
if [ -e "$PID_FILE" ]; then
	PID="$(cat $PID_FILE)"
	echo "Disconnecting ${PID}..."
	if kill -0 $PID; then
		kill $PID
	fi
	rm  -f "$PID_FILE"
	exit 0
fi

# start vpnc
vpnc "$CONF_FILE" --pid-file "$PID_FILE" --non-inter &>"$LOG_FILE"

if [ ! -e "$PID_FILE" ]; then
    echo "vpnc PID not found at ${PID_FILE}." 1>&2
    cat "$LOG_FILE" 1>&2
    rm "$PID_FILE"
    exit 1
fi

echo "connected."
exit 0