Munin contributed plugins

#! /bin/bash

#

# Munin Plugin

# to count logins to your dovecot mailserver

# 

# Created by Dominik Schulz <lkml@ds.gauner.org>

# http://developer.gauner.org/munin/

# Contributions by:

# - Stephane Enten <tuf@delyth.net>

# 

# Parameters understood:

#

#	config		(required)

#	autoconf 	(optional - used by munin-config)

# 

# Config variables:

#

#       logfile      - Where to find the syslog file

#

# Add the following line to a file in /etc/munin/plugin-conf.d:

# 	env.logfile /var/log/your/logfile.log

#

# Magic markers (optional - used by munin-config and installation scripts):

#

#%# family=auto

#%# capabilities=autoconf

######################

# Configuration

######################

STAT_FILE=${STAT_FILE:-/var/lib/munin/plugin-state/plugin-dovecot.state}

EXPR_BIN=/usr/bin/expr

LOGFILE=${logfile:-/var/log/mail.log}

######################

if [ "$1" = "autoconf" ]; then

	echo yes

	exit 0

fi

if [ "$1" = "config" ]; then

	echo 'graph_title Dovecot Logins'

	echo 'graph_category Mail'

	echo 'graph_args --base 1000 -l 0'

	echo 'graph_vlabel Login Counters'

	echo 'login_total.label Total Logins'

	echo 'login_tls.label TLS Logins'

	echo 'login_ssl.label SSL Logins'

	echo 'login_imap.label IMAP Logins'

	echo 'login_pop3.label POP3 Logins'

	echo 'connected.label Connected Users'

	exit 0

fi

#############################

# Initialization

#############################

if [ ! -r $STAT_FILE ]; then

	echo "TOTAL=0" > $STAT_FILE

	echo "TLS=0" >> $STAT_FILE

	echo "SSL=0" >> $STAT_FILE

	echo "IMAP=0" >> $STAT_FILE

	echo "POP3=0" >> $STAT_FILE

fi

#############################

######################

# Total Logins

######################

echo -en "login_total.value "

NEW_TOTAL=$(egrep '[dovecot]?.*Login' $LOGFILE | grep "`date '+%b %e'`" | sort | wc -l)

OLD_TOTAL=$(grep TOTAL $STAT_FILE | cut -f2 -d '=')

TOTAL=$($EXPR_BIN $NEW_TOTAL - $OLD_TOTAL)

if [ $TOTAL -gt 0 ]; then

	echo "$TOTAL"

else

	echo "0"

fi

echo -n

######################

# Connected Users

######################

DISCONNECTS=$(egrep '[dovecot]?.*Disconnected' $LOGFILE | sort | wc -l)

CONNECTS=$(egrep '[dovecot]?.*Login' $LOGFILE | sort | wc -l)

DISCON=$($EXPR_BIN $CONNECTS - $DISCONNECTS)

if [ $DISCON -lt 0 ]; then

	DISCON=0

fi

echo -en "connected.value "

echo $DISCON

echo -n

######################

# TLS Logins

######################

echo -en "login_tls.value "

NEW_TLS=$(egrep '[dovecot]?.*Login.*TLS' $LOGFILE | grep "`date '+%b %e'`" | sort | wc -l)

OLD_TLS=$(grep TLS $STAT_FILE | cut -f2 -d '=')

TLS=$($EXPR_BIN $NEW_TLS - $OLD_TLS)

if [ $TLS -gt 0 ]; then

	echo "$TLS"

else

	echo "0"

fi

echo -n

######################

# SSL Logins

######################

echo -en "login_ssl.value "

NEW_SSL=$(egrep '[dovecot]?.*Login.*SSL' $LOGFILE | grep "`date '+%b %e'`" | sort | wc -l)

OLD_SSL=$(grep SSL $STAT_FILE | cut -f2 -d '=')

SSL=$($EXPR_BIN $NEW_SSL - $OLD_SSL)

if [ $SSL -gt 0 ]; then

	echo "$SSL"

else

	echo "0"

fi

echo -n

######################

# IMAP Logins

######################

echo -en "login_imap.value "

NEW_IMAP=$(egrep '[dovecot]?.*imap.*Login' $LOGFILE | grep "`date '+%b %e'`" | sort | wc -l)

OLD_IMAP=$(grep IMAP $STAT_FILE | cut -f2 -d '=')

IMAP=$($EXPR_BIN $NEW_IMAP - $OLD_IMAP)

if [ $IMAP -gt 0 ]; then

	echo "$IMAP"

else

	echo "0"

fi

echo -n

######################

# POP3 Logins

######################

echo -en "login_pop3.value "

NEW_POP3=$(egrep '[dovecot]?.*pop3.*Login' $LOGFILE | grep "`date '+%b %e'`" | sort | wc -l)

OLD_POP3=$(grep POP3 $STAT_FILE | cut -f2 -d '=')

POP3=$($EXPR_BIN $NEW_POP3 - $OLD_POP3)

if [ $POP3 -gt 0 ]; then

	echo "$POP3"

else

	echo "0"

fi

echo -n

######################

# Save the new values

######################

echo "TOTAL=$NEW_TOTAL" > $STAT_FILE

echo "TLS=$NEW_TLS" >> $STAT_FILE

echo "SSL=$NEW_SSL" >> $STAT_FILE 

echo "IMAP=$NEW_IMAP" >> $STAT_FILE

echo "POP3=$NEW_POP3" >> $STAT_FILE