#!/bin/sh

for i in /run/ppp/??*.pid ; do
	if [ -r $i ] ; then
		PID=`head -n 1 $i`
		IF=`sed -n '2p' $i`
		if [ -z "$PID" ] || [ -z "$IF" ] || ! kill -0 $PID 2>/dev/null; then
			echo "pppoe-status: Process $PID for interface $IF does not exist"
			continue
		fi
		if ! ip route | grep -qw "dev $IF"; then
			echo "pppoe-status: Link is attached to $IF, but $IF is down"
			exit 1
		fi
		echo "pppoe-status: Link is up and running on interface $IF"
		ip addr show $IF
		exit 0
	fi
done

echo "ppppoe-status: Link is down"
exit 1