freebsd-dev/etc/periodic/security/100.chksetuid

#!/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.
#
# $FreeBSD$
#

# 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

TMP=`mktemp ${TMPDIR:-/tmp}/security.XXXXXXXXXX`
LOG="${daily_status_security_logdir}"
rc=0

case "$daily_status_security_chksetuid_enable" in
    [Yy][Ee][Ss])
	echo ""
	echo 'Checking setuid files and devices:'
	# XXX Note that there is the possibility of overrunning the args to ls
	MP=`mount -t ufs | grep -v " nosuid" | awk '{ print $3 }' | sort`
	set ${MP}
	while [ $# -ge 1 ]; do
	    mount=$1
	    shift
	    find $mount -xdev -type f \
		    \( -perm -u+x -or -perm -g+x -or -perm -o+x \) \
		    \( -perm -u+s -or -perm -g+s \) -print0
	done | xargs -0 -n 20 ls -liTd | sed 's/^ *//' | sort +10 > ${TMP}

	if [ ! -f ${LOG}/setuid.today ]; then
	    rc=1
	    echo "No ${LOG}/setuid.today"
	    cp ${TMP} ${LOG}/setuid.today || rc=3
	fi

	if ! cmp ${LOG}/setuid.today ${TMP} >/dev/null
	then
	    [ $rc -lt 1 ] && rc=1
	    echo "${host} setuid diffs:"
	    diff -b ${LOG}/setuid.today ${TMP}
	    mv ${LOG}/setuid.today ${LOG}/setuid.yesterday || rc=3
	    mv ${TMP} ${LOG}/setuid.today || rc=3
	fi
	rm -f ${TMP};;
    *)	rc=0;;
esac

exit $rc