#!/bin/bash

# Copyright (C) 2009 Andreas Thienemann <andreas@bawue.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Library General Public License as published by
# the Free Software Foundation; version 2 only
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#

#
# Plugin to monitor an smstools installation
#
# Usage: Link or copy into the munin-node plugin directory, name it according
# to your SMS Modem as known to smsd. e.g. smstools_GSM1
#
#
# Installation:
#
# SMSD:
# Configure smsd to output his statistics by adding the following to /etc/smsd.conf:
#
# stats = /var/log/smsd_stats
# stats_interval = 300
#
#
# Munin:
# If your statistics directory is non-standard, configure it as
# statsdir in the munin-plugin configuration
# In case you do not want your statistics-dump from smsd deleted after reading,
# set env.cleanup to false. If you want cleanup to work, run the plugin as root.
#
# [smstools*]
# user root
# env.statsdir /var/log/smsd_stats
# env.cleanup true
#
#
# Magic markers (optional - only used by munin-config and some
# installation scripts):
#
#%# family=contrib
#%# capabilities=autoconf suggest
#

STATSDIR=${statsdir:-/var/log/smsd_stats}
CLEANUP=${cleanup:-false}
MODEM=`basename $0 | sed 's/^smstools_//g'`

if [ "$1" = "autoconf" ]; then
        if [ -d $STATSDIR ]; then
                echo yes
        else
                echo "no ($STATSDIR not found)"
        fi
        exit 0
fi

if [ "$1" = "suggest" ]; then
        if [ -d $STATSDIR ]; then
		# Find the newest statistics file
		FILE=$(ls -rt ${STATSDIR}/[0-9]*.[0-9]* | tail -n 1)

		awk '
			FS="," {
				if (NR > 4) {
					print $1
				}
			}
		' < $FILE
                exit 0
        else
                exit 1
        fi
fi


# If run with the "config"-parameter, give out information on how the
# graphs should look.

if [ "$1" = "config" ]; then
	echo 'graph_title SMSTools Report for '${MODEM}
	echo 'graph_args --base 1000 -l 0'
	echo 'graph_vlabel '
	echo 'graph_scale no'
	echo 'graph_category chat'
	echo 'graph_info SMSTools Statistics'
	echo 'graph_oder succeeded received failed multiple_failed rejected'
	echo 'rejected.label Rejected'
	echo 'rejected.info Number of rejected SMS'
	echo 'succeeded.label Succeeded'
	echo 'succeeded.info Number of successfully sent SMS'
	echo 'failed.label Failed'
	echo 'failed.info Number of failed SMS'
	echo 'received.label Received'
	echo 'received.info Number of received SMS'
	echo 'multiple_failed.label Consecutive failures'
	echo 'multiple_failed.info Number of consecutive failures'
#	echo 'usage_s.label Time sent'
#	echo 'usage_s.info Modem time sending'
#	echo 'usage_r.label Time sent'
#	echo 'usage_r.info Modem time receiving'

	# Last, if run with the "config"-parameter, quit here (don't
	# display any data)
	exit 0
fi

# Find the newest statistics file
FILE=$(ls -rt ${STATSDIR}/[0-9]*.[0-9]* | tail -n 1)

awk '
FS="," {
	if (NR == 2)
		a[0] = "rejected.value " $2

	if (NR > 4 && $1 == "'$MODEM'") {
		a[1] = "succeeded.value " $2
		a[2] = "failed.value " $3
		a[3] = "received.value " $4
		a[4] = "multiple_failed.value " $5
		a[5] = "usage_s.value " $6
		a[6] = "usage_r.value " $7
	}

	# Did we actually get more then just the rejected.value line?
	# Then we must have parsed the right modem, output everything
	if (1 in a) {
		for (i = 0; i < 7; i++) {
			print a[i]
		}
	}
}
' < $FILE

if [ ${CLEANUP} == "true" ]; then
	rm -f $FILE
fi