#!/bin/sh
#
# Plugin to monitor network connections by IP (most active)
#
# Parameters:
#
# 	config   (required)
# 	autoconf (optional - only used by munin-config)
#
#
#
#
# Magic markers (optional - used by munin-config and some installation
# scripts):
#%# family=auto
#%# capabilities=autoconf



if [ "$1" = "autoconf" ]; then
	if ( netstat -s 2>/dev/null >/dev/null ); then
		echo yes
		exit 0
	else
		if [ $? -eq 127 ]
		then
			echo "no (netstat program not found)"
			exit 1
		else
			echo no
			exit 1
		fi
	fi
fi

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

	echo 'graph_title Netstat by top IP'
	echo 'graph_vlabel active connections'
	echo 'graph_category network'
	# echo 'graph_period second'
	echo 'graph_info This graph shows the TCP activity of all the network interfaces combined (by most active IP).'

	netstat -n | grep tcp | awk '{print $5}' | grep -v ffff | cut -f 1 -d ":" | awk '{foo[$1]++} END {for (f in foo) { print foo[f], f }}'  | sort -n  | grep -v "^[123456789] " | sed "s/\./_/g" |  awk '{print $2".label "$2}'

	exit 0
fi

netstat -n | grep tcp | awk '{print $5}' | grep -v ffff | cut -f 1 -d ":" | awk '{foo[$1]++} END {for (f in foo) { print foo[f], f }}'  | sort -n  | grep -v "^[123456789] " | sed "s/\./_/g" | awk '{print $2".value "$1}'