freebsd-skq/etc/periodic/security/900.tcpwrap

#!/bin/sh -
#
# Copyright (c) 2001  The FreeBSD Project
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#

# Show tcp_wrapper warning messages
#

# If there is a global system configuration file, suck it in.
#
if [ -r /etc/defaults/periodic.conf ]
then
    . /etc/defaults/periodic.conf
    source_periodic_confs
fi

security_daily_compat_var security_status_logdir
security_daily_compat_var security_status_tcpwrap_enable

LOG="${security_status_logdir}"

yesterday=`date -v-1d "+%b %e "`

catmsgs() {
	find ${LOG} -name 'messages.*' -mtime -2 |
	    sort -t. -r -n -k 2,2 |
	    while read f
	    do
		case $f in
		    *.gz)	zcat -f $f;;
		    *.bz2)	bzcat -f $f;;
		esac
	    done
	[ -f ${LOG}/messages ] && cat $LOG/messages
}

rc=0

if check_yesno_period security_status_tcpwrap_enable
then
	echo ""
	echo "${host} refused connections:"
	n=$(catmsgs | grep -i "^$yesterday.*refused connect" |
	    tee /dev/stderr | wc -l)
	[ $n -gt 0 ] && rc=1 || rc=0
fi

exit $rc