#!/bin/bash
#
# Plugin to monitor the number of hosts in /etc/hosts.deny
# that are deined access to sshd
# 
# Based on denyhosts plugin by tjansson (2009)
#
# Copyright (C) 2009 Kåre Hartvig Jensen (kaare.hartvig.jensen@gmail.com)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

if [ "$1" = "autoconf" ]; then
        if [ -r "$LOG" ]; then
                echo yes
                exit 0
        else
                echo no
                exit 1
        fi
fi

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

        echo 'graph_title Hosts denied sshd access in /etc/hosts.deny'
        echo 'graph_args --base 1000 -l 0'
        echo 'graph_vlabel Hosts denied '
        echo 'graph_category system'
        echo 'HostsDenied.label Hosts denied'
        exit 0
fi

echo HostsDenied.value  `cat /etc/hosts.deny | grep sshd | wc -l`