#!/bin/sh
#
#NADDS Agent - http://nadds.drmadcow.net/
#Routing stability check
#Agent Author: Dustin Downs
#Date: 2003-May-26 (V1.4)
	
. /usr/local/bcnu/etc/bcnuenv
. $BCNUHOME/agent/agent_head

MSGFILE=$BCNUTMP/${BCNUAGENT}.msg
TMP=$BCNUTMP/${BCNUAGENT}.tmp
ERR_MSG_FILE=$BCNUTMP/${BCNUAGENT}.err
OUTFILE=$BCNUTMP/${BCNUAGENT}.out


rm -f $TMP $MSGFILE $ERR_MSG_FILE $OUTFILE 2>/dev/null

if [ ! -d $BCNUHOME/data/${BCNUAGENT}-archive ]; then
	mkdir -p $BCNUHOME/data/${BCNUAGENT}-archive
fi

ERR=""
MSG=""
ERRMSG=""
WARN=""
WARNMSG=""

for param in $BCNUPARAM
do
bcnu_param

DEST=$p1


if [ ! -f $BCNUHOME/data/${BCNUAGENT}-archive/$DEST ]; then
	/usr/sbin/traceroute $DEST|awk '{print $2}'|sed s/*//g|sed 's/^[ ^t]*//' >$BCNUHOME/data/${BCNUAGENT}-archive/$DEST
	if [ ! -f $BCNUHOME/data/${BCNUAGENT}-archive/$DEST ]; then
		WARNMSG="warning - $DEST is not being monitored."
		echo $WARNMSG >> $ERR_MSG_FILE 
		WARN=1
	else
		MSG="$DEST - route is now being monitored."
		echo $MSG >>$MSGFILE
	fi	
fi

/usr/sbin/traceroute $DEST|awk '{print $2}'|sed s/*//g|sed 's/^[ ^t]*//' >$TMP

diff "$TMP" $BCNUHOME/data/${BCNUAGENT}-archive/$DEST 2> /dev/null

result=$?

if [ $result -eq 1 ]; then
	ERRMSG="error - Routing has changed for $DEST - original route backed up" 
	timestamp=`date +%Y%m%d%H%M%S`
	namedtime="${DEST}_${timestamp}"
	echo -e "$DEST routing backed up in BCNUHOME/data/${BCNUAGENT}-archive/${namedtime}.tgz\n" >>$OUTFILE
	cd $BCNUHOME/data/${BCNUAGENT}-archive/
	tar cfpz "$namedtime".tgz $DEST
	rm -f $BCNUHOME/data/${BCNUAGENT}-archive/$DEST
	cp -p $TMP $BCNUHOME/data/${BCNUAGENT}-archive/$DEST
	echo $ERRMSG >>$ERR_MSG_FILE
	ERR=1

elif [ $result -eq 0 ]; then
		MSG="ok - $DEST Routing unchanged"
		echo $MSG >>$MSGFILE
fi


done

if [ -f $MSGFILE ]; then 
	printf "Routing status:\n\n" >>$OUTFILE
if [ -f $ERR_MSG_FILE ]; then
	cat $ERR_MSG_FILE >>$OUTFILE
fi
	cat $MSGFILE >> $OUTFILE
fi

if [ $ERR ]; then
	BCNUMSG="$BCNU -m '$ERRMSG' -f $OUTFILE -e $BCNU_ERR -t $BCNUHOSTTYPE $BCNUHOST"
	bcnu_err_send

elif [ $WARN ]; then
	BCNUMSG="$BCNU -m '$WARNMSG' -f $OUTFILE -e $BCNU_WARN -t $BCNUHOSTTYPE $BCNUHOST" 
	bcnu_warn_send
else
	BCNUMSG="$BCNU -m 'ok - no routing has changed' -f $OUTFILE -e $BCNU_OK -t $BCNUHOSTTYPE $BCNUHOST"
	bcnu_send
fi