#! /bin/sh

# by Thierry Nkaoua
# all comments welcome to tnka@linux-sottises.net

# sript to update dns name at www.dyndns.org
# It keeps trying to update IP at www.dyndns.org till il gets a zero return code (update OK)
# ipcheck.py from http://ipcheck.sourceforge.net/ is used and deals with
# abuse (no update id done if ip is the same) and update after 28 days with same ip

# Please modify the following file according to your configuration.
# Added by <wsapplegate@postmaster.co.uk>.
. /etc/adsl.conf

# getip gets and ppp0 IP by scanning "ifconfig ppp0" return
# IP is stored

# Check IPs from ifconfig and savefile.

getip() {
		IP=`$IFCONFIG/ifconfig ppp0 | fgrep "inet ad" | cut -f2 -d":" | cut -f1 -d" "`
                 OLDIP=`cat $CHECKIP/pptp.ip`
        }
#
sleep $DDNSDELAY
RETVAL=1
while [ $RETVAL -ne 0 ];do
	echo  Starting ddns >> $LOG
	getip

	if [ "$IP" ]; then
		if [ "$OLDIP" != "$IP" ]; then
			echo -n "old IP: " >> $LOG
                	echo $OLDIP >> $LOG
               		echo -n "new IP: " >> $LOG
              		echo $IP >> $LOG
         	else
               		echo same IP >> $LOG
         	fi

		python $DDNS/ipcheck.py -a $IP -d $DDNS login password serveur1 serveur2 serveur3 >>$LOG
#		python $DDNS/ipcheck.py -a $IP test test test.dyndns.org >> $LOG
		RETVAL=$?
		[ $RETVAL -eq 0 ] && echo -n "$IP" > $CHECKIP/pptp.ip
		[ $RETVAL -ne 0 ] && rm $DDNS/ipcheck.err > /dev/null
         else
                echo panic ddns: no IP available >> $LOG
		sleep $DDNSDELAY
         fi
done