#!/bin/bash
#
# Plugin to monitor incoming Postgrey
#
# Parameters understood:
#
# 	config   (required)
# 	autoconf (optional)
#

MAIL_LOG=${logfile:-/var/log/mail.log}
LOGTAIL=${logtail:-`which logtail`}
STATEFILE=/var/lib/munin/plugin-state/postgrey.offset

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

if [ "$1" = "config" ]; then
	echo 'graph_title Postgrey daily filtering'
	echo 'graph_order delayed passed whitelisted'
	echo 'graph_category mail'
	echo 'graph_vlabel Count'
##	echo 'graph_args --base 1000 -l 0'
	echo 'delayed.label delayed'
	echo 'passed.label passed'
	echo 'whitelisted.label whitelisted'
        exit 0
fi


delayed=U
passed=U
whitelisted=U

TEMP_FILE=`mktemp -t munin-postgrey.XXXXXX`

if [ -n "$TEMP_FILE" -a -f "$TEMP_FILE" ]
then
	# get the newest entries with logtail and reduce the dataset with a first filter
	# FR: je pogne juste les entrees qui ont rapport, pour reduire la taille du tempfile
	# FR: logtail va chercher les dernieres entrees du mail_log en se basant sur le STATEFILE
	$LOGTAIL ${MAIL_LOG} $STATEFILE | egrep 'postgrey|Greylisted' > ${TEMP_FILE}

	delayed=`grep 'Recipient address rejected.*Greylisted' ${TEMP_FILE} | wc -l`
	passed=`grep 'postgrey\[[0-9]*\]: delayed [0-9]* seconds:' ${TEMP_FILE} | wc -l` 
	whitelisted=`grep 'postgrey\[[0-9]*\]: whitelisted:' ${TEMP_FILE} | wc -l`

	/bin/rm -f $TEMP_FILE
fi

echo "delayed.value ${delayed}"
echo "passed.value ${passed}"
echo "whitelisted.value ${whitelisted}"