#!/bin/sh

die() {
	echo "$@" >&2
	exit 1
}

HOST="$1"
IF="$2"

[ "$HOST" ] || die "Specify hostname"

URL="http://$HOST/SysStatistics_ADSL.html"

STATS=`wget -q -O- --user=admin --password=thepassword "$URL" | grep '</table>'`
T1=`echo "$STATS" | head -1`
T2=`echo "$STATS" | head -2|tail -1`

P1=`echo "$T1"|sed 's/<div[^>]*>//g;s/<\/div>/|/g;s/<[^>]*>//g;s/  *//g'`
P2=`echo "$T2"|sed 's/<div[^>]*>//g;s/<\/div>/|/g;s/<[^>]*>//g;s/  *//g'`

# Now have:
#P1=1-PPPoE:Up:3006190:2424875:0:286:392:21:20:30:
#P2=:Up:2563185:3738469:0:
# fields:
#P1=Node-Link:Status:TxPkts:RxPkts:Errors:Tx B/s:Rx B/s:Up Time
#P2=Status:TxPkts:RxPkts:Collisions
TITLE="Node-Link|Status|TxPkts|RxPkts|Errors|Tx B/s|Rx B/s|Up Time||Status|TxPkts|RxPkts|Collisions"
DATA="$P1$P2"

POS=1
T1=`echo "$TITLE"|cut -d"|" -f$POS|sed 's/ //g'`
D1=`echo "$DATA" |cut -d"|" -f$POS`
PREFIX="WAN-"
while [ $POS -lt 20 ]; do
	if [ "$T1" = "UpTime" ]; then
		D1=`
			IFS=":"
			set - ""$D1
			H="$1"
			M="$2"
			S="$3"
			expr \( $H \* 60 + $M \) \* 60 + $S
		`
	fi
	if [ "$T1" -a "$D1" ]; then
		if [ "$IF" = "" ]; then
			printf "$PREFIX$T1:$D1 "
		elif [ "$IF"- = "$PREFIX" ]; then
			case "$T1" in
				TxPkts|RxPkts|Errors|Collisions) printf "$T1:$D1 ";;
			esac
		fi
	else
		PREFIX="LAN-"
	fi
	POS=`expr $POS + 1`
	T1=`echo "$TITLE"|cut -d"|" -f$POS|sed 's/ //g'`
	D1=`echo "$DATA" |cut -d"|" -f$POS`
done
echo