#!/bin/sh
#
# Wildcard-plugin to monitor network interfaces. To monitor an
# interface, link if_<interface> to this file. E.g.
#
#    ln -s /usr/share/munin/node/plugins-auto/if_ /etc/munin/node.d/if_eth0
#
# ...will monitor eth0.
#
# Any device found in /usr/bin/netstat can be monitored.
#
# $Log$
# Revision 1.4.2.1  2005/01/28 14:51:22  lupe
# Add graph_info and some filed.info
#
# Revision 1.5  2005/01/28 14:47:31  lupe
# Add graph_info and some filed.info
#
# Revision 1.4  2004/12/10 10:47:49  jimmyo
# Change name from ${scale} to ${graph_period}, to be more consistent.
#
# Revision 1.3  2004/12/09 22:12:55  jimmyo
# Added "graph_period" option, to make "graph_sums" usable.
#
# Revision 1.2  2004/05/20 19:02:36  jimmyo
# Set categories on a bunch of plugins
#
# Revision 1.1  2004/01/02 18:50:00  jimmyo
# Renamed occurrances of lrrd -> munin
#
# Revision 1.1.1.1  2004/01/02 15:18:07  jimmyo
# Import of LRRD CVS tree after renaming to Munin
#
# Revision 1.2  2003/11/07 17:43:16  jimmyo
# Cleanups and log entries
#
#
#
# Magic markers (optional - used by munin-config and some installation
# scripts):
#
#%# family=auto
#%# capabilities=autoconf suggest


INTERFACE=`basename $0 | sed 's/^if_errcoll_//g'`

if [ "$1" = "autoconf" ]; then
	if [ -x /usr/bin/netstat ]; then
		echo yes
		exit 0
	else
		echo "no (/usr/bin/netstat not found)"
		exit 1
	fi
fi

if [ "$1" = "suggest" ]; then
	if [ -x /usr/bin/netstat ]; then
		netstat -i -b | sed -n -e '/^faith/d' -e '/^lo0/d' -e '/<Link#[0-9]*>/s/\** .*//p'
		exit 0
	else
		exit 1
	fi
fi

if [ "$1" = "config" ]; then
	echo "graph_order ierrors oerrors collisions"
	echo "graph_title $INTERFACE Errors & Collisions"
	echo 'graph_args --base 1000'
	echo 'graph_vlabel events / ${graph_period}'
	echo 'graph_category network'
	echo "graph_info This graph shows the amount of errors and collisions on the $INTERFACE network interface."
	echo 'ierrors.label Input Errors'
        echo 'ierrors.type COUNTER'
        echo 'oerrors.label Output Errors'
	echo 'oerrors.type COUNTER'
        echo 'collisions.label Collisions'
	echo 'collisions.type COUNTER'
	exit 0
fi;

/usr/bin/netstat -i -b -I $INTERFACE | awk '
/<Link#[0-9]*>/ {
	if (NF == 10) {
		print "ierrors.value", $5;
		print "oerrors.value", $8;
		print "collisions.value", $10;
	} else {
		print "ierrors.value", $6;
		print "oerrors.value", $9;
		print "collisions.value", $11;
	}
}'