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#!/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.
#
# $FreeBSD$
#
# This is a library file, so we only try to do something when sourced.
case "$0" in
*/security.functions) exit 0 ;;
esac
security_daily_compat_var security_status_logdir
security_daily_compat_var security_status_diff_flags
#
# Show differences in the output of an audit command
#
LOG="${security_status_logdir}"
rc=0
# Usage: COMMAND | check_diff [new_only] LABEL - MSG
# COMMAND > TMPFILE; check_diff [new_only] LABEL TMPFILE MSG
# if $1 is new_only, show only the 'new' part of the diff.
# LABEL is the base name of the ${LOG}/${label}.{today,yesterday} files.
check_diff() {
unset IFS
rc=0
if [ "$1" = "new_only" ]; then
shift
filter="grep '^[>+][^+]'"
else
filter="cat"
fi
label="$1"; shift
tmpf="$1"; shift
msg="$1"; shift
if [ "${tmpf}" = "-" ]; then
tmpf=`mktemp -t security`
cat > ${tmpf}
fi
if [ ! -f ${LOG}/${label}.today ]; then
rc=1
echo ""
echo "No ${LOG}/${label}.today"
cp ${tmpf} ${LOG}/${label}.today || rc=3
fi
if ! cmp -s ${LOG}/${label}.today ${tmpf} >/dev/null; then
[ $rc -lt 1 ] && rc=1
echo ""
echo "${msg}"
diff ${security_status_diff_flags} ${LOG}/${label}.today \
${tmpf} | eval "${filter}"
mv ${LOG}/${label}.today ${LOG}/${label}.yesterday || rc=3
mv ${tmpf} ${LOG}/${label}.today || rc=3
fi
rm -f ${tmpf}
exit ${rc}
}
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