#!/system/bin/sh
#***********************************************************************
#
# pppoe-status
#
# Shell script to report on status of PPPoE connection
#
# Copyright (C) 2000-2001 Roaring Penguin Software Inc.
#
# $Id$
#
# This file may be distributed under the terms of the GNU General
# Public License.
#
# LIC: GPL
#
# Usage: pppoe-status [config_file]
# If config_file is omitted, defaults to /etc/ppp/pppoe.conf
#
#***********************************************************************

# Defaults
ECHO="/system/bin/log -t pppoe_status"
#ECHO=echo
SETPROP=/system/bin/setprop
PPP_DIR=/data/misc/ppp
CONFIG=$PPP_DIR/pppoe.conf
#LOG=$PPP_DIR/log
LOG=/dev/console
BUSYBOX=busybox

case "$#" in
    1)
	CONFIG="$1"
	;;
esac

if [ ! -f "$CONFIG" -o ! -r "$CONFIG" ] ; then
    $ECHO "$0: Cannot read configuration file '$CONFIG'"
    exit 1
fi

. $CONFIG

PPPOE_PIDFILE="$PIDFILE.pppoe"
PPPD_PIDFILE="$PIDFILE.pppd"

if [ "$DEMAND" != "no" ] ; then
    $ECHO "Note: You have enabled demand-connection; pppoe-status may be inaccurate."
fi

# If no PPPOE_PIDFILE, connection is down, unless we're using the Linux plugin
if [ "$LINUX_PLUGIN" = "" ] ; then
    if [ ! -r "$PPPOE_PIDFILE" ] ; then
	$ECHO "pppoe-status: Link is down (can't read pppoe PID file $PPPOE_PIDFILE)"
	exit 1
    fi
fi

# If no PPPD_PIDFILE, something fishy!
if [ ! -r "$PPPD_PIDFILE" ] ; then
    $ECHO "pppoe-status: Link is down (can't read pppd PID file $PPPD_PIDFILE)"
    exit 1
fi

PPPD_PID=`cat "$PPPD_PIDFILE"`

# Sigh.  Some versions of pppd put PID files in /var/run; others put them
# in /etc/ppp.  Since it's too messy to figure out what pppd does, we
# try both locations.
for i in $PPP_DIR/ppp*.pid /var/run/ppp*.pid ; do
    if [ -r $i ] ; then
	PID=`cat $i`
	$ECHO "$i:$PID  $PPPD_PIDFILE:$PPPD_PID"
	if [ "$PID" = "$PPPD_PID" ] ; then
	    IF=`$BUSYBOX basename $i .pid`
	    $BUSYBOX netstat -rn | $BUSYBOX grep " ${IF}\$" > /dev/null
	    #$BUSYBOX ifconfig $IF | $BUSYBOX grep "UP. *POINTOPOINT" > /dev/null
	    if [ "$?" != "0" ] ; 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"
	    $SETPROP "pppoe.interface" $IF
	    $BUSYBOX ifconfig $IF
	    exit 0
	fi
    fi
done

$ECHO "pppoe-status: Link is down -- could not find interface corresponding to"
$ECHO "pppd pid $PPPD_PID"
exit 1