#!/bin/bash
cd /scripts
# Time in minutes between polls
TIMER=60
LASTIPFILE=lastipfile.dat
COUNTFILE=lastipindex.dat
if [ -f $LASTIPFILE -a -r $LASTIPFILE ]; then
LASTIP=`cat $LASTIPFILE`
fi

COUNT=`cat $COUNTFILE`
if [ -z "$COUNT" ]; then COUNT=0; fi
while :; do
COUNT=`expr $COUNT + 1`
TOTAL=`cat iplist | grep -v ^# | grep -v "^ *$" | wc -l`
if [ $COUNT -gt $TOTAL ]; then COUNT=1; fi

echo $COUNT > $COUNTFILE

CURRENTURL=`cat iplist | grep -v ^# | grep -v "^ *$" | sed --silent -e ${COUNT}p`

echo $CURRENTURL >&2
MYIP=`wget $CURRENTURL -O - 2>/dev/null \
	| grep [0-9] \
	| sed \
	  -e 's/[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*/\n&\n/g' \
	| grep '^[0-9]\.\|^[0-9][0-9]\.\|^[0-9][0-9][0-9]\.' \
	| grep '^[0-9][0-9]*\.[0-9]\.\|^[0-9][0-9]*\.[0-9][0-9]\.\|^[0-9][0-9]*\.[0-9][0-9][0-9]\.' \
	| grep '^[0-9][0-9]*\.[0-9][0-9]*\.[0-9]\.\|^[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]\.\|^[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9][0-9]\.' \
	| grep '^[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9]$\|^[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]$\|^[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9][0-9]$' \
	| sed \
	  -e 's/\./ /g' \
	| while read ONE TWO THREE FOUR FIVE; do 
	if [ -n "$FIVE" -o -z "$FOUR" ]; then continue; fi
	if [ $ONE -gt 255 ]; then continue; fi
	if [ $TWO -gt 255 ]; then continue; fi
	if [ $THREE -gt 255 ]; then continue; fi
	if [ $FOUR -gt 255 ]; then continue; fi
	echo $ONE.$TWO.$THREE.$FOUR
	break
	done`

if [ -z "$MYIP" ]; then echo FAIL | mail -s "FAILURE TO GET MY IP" root; echo Failed to get current IP; fi

if [ "$LASTIP" != "$MYIP" ]; then
	echo IP Address change from [$LASTIP] to [$MYIP]
	LASTIP=$MYIP
	echo $LASTIP > $LASTIPFILE
	cp $LASTIPFILE homebox.txt
	tar -cf - homebox.txt | ssh user@mydomain.com "(cd public_html && tar -xvf -)"
else
	echo No change, IP is [$MYIP]
fi
	echo Sleeping $TIMER minutes
	sleep `expr 60 \* $TIMER`

done