Munin contributed plugins

#!/bin/sh

#

# OpenBSD's pf(4) monitoring for OpenBSD

# 2007, Originally by Gergely Czuczy <phoemix@harmless.hu>

# for FreeBSD systems. Ported and splitted by the 

# immerda admin team admin(at)immerda.ch

# this version is adapted for openbsd and is only tested on

# openbsd systems.

#

# Needs to run as root.

# Add "user root" for the [pf] into plugins.conf.

#

#%# family=auto

#%# capabilities=autoconf

pfctl='/sbin/pfctl'

case $1 in

    config)

    cat <<EOF

graph_title OpenBSD pf label bytes statistics

graph_vlabel bytes per second

graph_scale no

graph_category network

graph_args -l 0

graph_info OpenBSD's pf label bytes usage statistics

EOF

pfctl -sl | awk '

BEGIN {

 total=0

}

{

 l=$1;

 f_bytes=l;

 gsub(/[^a-z0-9A-Z]/, "_", f_bytes);

 fields[f_bytes]=l;

 total=total+1

}

END {

 if ( total == 0 ) exit 0;

 for ( k in fields ) print k".label "fields[k]"\n"k".type DERIVE\n"k".min 0"

}'

    exit 0

    ;;

    autoconf)

	# FreeBSD

	ostype=`uname -s`

	# OpenBSD

	if [ ${ostype} = "OpenBSD" ]; then

            # enabled?

	    if [ `pfctl -si 2>/dev/null | awk '/^Status:/{print $2}'` != "Enabled" ]; then

		echo "no (pf(4) is not enabled, consult pfctl(8)"

		exit 1

	    fi

	# Other OSes

	else

	    echo "no (this plugin is not supported on your OS)"

	    exit 1

	fi

	echo "yes"

	exit 0

	;;

    suggest)

	exit 0;

	;;

esac

sudo pfctl -sl | awk '

BEGIN {

 total=0

}

{

 l=$1;

 f_bytes=l;

 gsub(/[^a-z0-9A-Z]/, "_", f_bytes);

 total=total+1;

 fields[f_bytes]=fields[f_bytes]+$4;

}

END {

 if ( total == 0 ) exit 0;

 for ( k in fields ) print k".value "fields[k]

}'