#!/bin/sh
# -*- sh -*-

mktempfile () {
    #cmd=`echo $MUNIN_MKTEMP | sed s/\\$1/$1/`
    #$cmd
    touch /tmp/$1
    echo /tmp/$1
}

FREERADIUS_LOG=${freeradiuslog:-/var/log/wifi_auth.log}
LOGTAIL=${logtail:-/usr/sbin/logtail}
MUNIN_PLUGSTATE=${MUNIN_PLUGSTATE:-/var/lib/munin/plugin-state/}
STATEFILE=$MUNIN_PLUGSTATE/wifi_auth.offset

if [ "$1" = "autoconf" ]; then
        if [ -f "${FREERADIUS_LOG}" -a -n "${LOGTAIL}" -a -x "${LOGTAIL}" ] ; then
		echo yes
		exit 0
	else
		echo no
		exit 0
	fi
fi

# Try tailing a random file to check how arguments are passed
ARGS=0
`$LOGTAIL /etc/hosts 2>/dev/null >/dev/null`
if [ $? = 66 ]; then
    if [ ! -n "$logtail" ]; then
	ARGS=1
    fi
fi

if [ "$1" = "config" ]; then
	echo 'graph_title Authentifications WiFi'
	echo 'graph_vlabel Auth'
	echo 'graph_category wifi'
    echo 'failures.label Échecs'
    echo 'failures.draw AREASTACK'
    echo 'failures.colour FF0000'
    echo 'success.label Succès'
    echo 'success.draw AREASTACK'
    echo 'success.colour 00FF00'
	exit 0
fi

success=U
failures=U

TEMP_FILE=$(mktempfile munin-radius-wifi.XXXXXX)

if [ -n "$TEMP_FILE" -a -f "$TEMP_FILE" ]
then
	if [ $ARGS != 0 ]; then
	    $LOGTAIL -f ${FREERADIUS_LOG} -o ${STATEFILE} | grep 'freeradius\[.*\]:' > ${TEMP_FILE}
	else
	    $LOGTAIL ${FREERADIUS_LOG} ${STATEFILE} | grep 'freeradius\[.*\]:' > ${TEMP_FILE}
	fi
    success=$(grep -c 'Login OK' ${TEMP_FILE})
    failures=$(grep -c 'Login incorrect' ${TEMP_FILE})

	/bin/rm -f $TEMP_FILE
fi

echo "success.value ${success}"
echo "failures.value ${failures}"