#!/bin/bash

case $1 in
   config)
        cat <<'EOM'
graph_order downspeed upspeed
graph_title DSL Connection Speed
graph_args --base 1000 -l 1000 --upper-limit 42000
graph_category network
graph_scale no
graph_vlabel DSL up / down speed
downspeed.label Down speed
downspeed.type GAUGE
upspeed.label Up speed
upspeed.type GAUGE
graph_info Graph of DSL Connection Speed
EOM
        exit 0;;
esac

# verify we have the IP for the modem
if [[ "$DSLMODEMIP" == "" ]]
then
	echo "DSLMODEMIP variable must be set!"
	exit 1
fi

# create temp file for storing wget output
TMPFILE=$(mktemp)

# if we have auth variables then add them to
# wget cmdline
if [[ "$DSLUSER" != ""  && "$DSLPASS" != "" ]]
then
	AUTH_OPT="--user=$DSLUSER --password='$DSLPASS' "
fi

# get wan stats page and store it to temp file
wget $AUTH_OPT --tries=1 --timeout=10 -q -O $TMPFILE http://$DSLMODEMIP/modemstatus_wanstatus.html
# parse tempfile to get connection speeds
DOWNRATE=$(cat $TMPFILE | grep downrate= | sed -e "s/var.*downrate='\(.*\)';.*/\1/g" | sed -e 's/\s//g' | tail -n 1)
UPRATE=$(cat $TMPFILE | grep uprate= | sed -e "s/var.*uprate='\(.*\)';.*/\1/g" | sed -e 's/\s//g' | tail -n 1)
# done with the temp file, remove
rm $TMPFILE

# done, output speeds
echo "upspeed.value $UPRATE"
echo "downspeed.value $DOWNRATE"