#!/bin/bash
#Bash script zum automatischen Neuaufbauen der VPN-Verbindung bei Abbruch.
LOGFILE="/var/log/unidsld"
echo -n `date` >> $LOGFILE
echo " UniDSLD startup" >> $LOGFILE
while(true) ; do 
	if (test -e /etc/userconfig/unidsld) ; then
		echo -n `date` >> $LOGFILE
		if ( ps -ef | grep -v grep | grep vpnc > /dev/null ) ; then	
			echo -n "  vpnc running at " >> $LOGFILE
			echo `pidof vpnc` >> $LOGFILE
		else
			echo "  vpnc not running. Starting it" >>  $LOGFILE
			echo -n "  connecting..." >> $LOGFILE
                        reunidslen 2>&1 >> $LOGFILE
                        echo -n `date` >> $LOGFILE
                        echo -n "  vpnc restarted, running at PID: " >> $LOGFILE
                       echo `pidof vpnc` >> $LOGFILE
		fi
		echo -n `date` >> $LOGFILE
		echo -n "  Now pinging hosts..." >> $LOGFILE
		if (ping -c 2 -n 134.130.3.1 > /dev/null 2>&1) ; then
			echo " relay.rwth-aachen.de reached, ok" >> $LOGFILE	
		else
			echo -n `date` >> $LOGFILE
        	        echo "  relay.rwth-aachen.de not found" >> $LOGFILE
			echo -n `date` >> $LOGFILE
			echo -n "  disconnecting..." >> $LOGFILE
			reunidslen 2>&1 >> $LOGFILE
			echo -n `date` >> $LOGFILE
	                echo -n "  vpnc restarted, running at PID: " >> $LOGFILE
        	        echo `pidof vpnc` >> $LOGFILE
	        fi	
		sleep 5
	else
		echo -n `date` >> $LOGFILE
		echo " UniDSLD started but deactivated." >> $LOGFILE
		exit 0
	fi
done