etc/periodic/security/security.functions

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2001  The FreeBSD Project
   4 # All rights reserved.
   5 #
   6 # Redistribution and use in source and binary forms, with or without
   7 # modification, are permitted provided that the following conditions
   8 # are met:
   9 # 1. Redistributions of source code must retain the above copyright
  10 #    notice, this list of conditions and the following disclaimer.
  11 # 2. Redistributions in binary form must reproduce the above copyright
  12 #    notice, this list of conditions and the following disclaimer in the
  13 #    documentation and/or other materials provided with the distribution.
  14 #
  15 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18 # ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25 # SUCH DAMAGE.
  26 #
  27 # $FreeBSD: src/etc/periodic/security/security.functions,v 1.5 2005/08/22 09:33:36 cperciva Exp $
  28 # $DragonFly: src/etc/periodic/security/security.functions,v 1.3 2007/12/29 21:44:44 matthias Exp $
  29 #
  30
  31 #
  32 # Show differences in the output of an audit command
  33 #
  34
  35 LOG="${daily_status_security_logdir}"
  36 rc=0
  37
  38 # Usage: COMMAND | check_diff [new_only] LABEL - MSG
  39 #        COMMAND > TMPFILE; check_diff [new_only] LABEL TMPFILE MSG
  40 #   if $1 is new_only, show only the 'new' part of the diff.
  41 #   LABEL is the base name of the ${LOG}/${label}.{today,yesterday} files.
  42
  43 check_diff() {
  44   rc=0
  45   if [ "$1" = "new_only" ]; then
  46     shift
  47     filter="grep '^[>+]'"
  48   else
  49     filter="cat"
  50   fi
  51   label="$1"; shift
  52   tmpf="$1"; shift
  53   msg="$1"; shift
  54
  55   if [ "${tmpf}" = "-" ]; then
  56     tmpf=`mktemp -t security`
  57     cat > ${tmpf}
  58   fi
  59
  60   if [ ! -f ${LOG}/${label}.today ]; then
  61     rc=1
  62     echo ""
  63     echo "No ${LOG}/${label}.today"
  64     cp ${tmpf} ${LOG}/${label}.today || rc=3
  65   fi
  66
  67   if ! cmp -s ${LOG}/${label}.today ${tmpf} >/dev/null; then
  68     [ $rc -lt 1 ] && rc=1
  69     echo ""
  70     echo "${msg}"
  71     diff ${daily_status_security_diff_flags} ${LOG}/${label}.today \
  72         ${tmpf} | eval "${filter}"
  73     mv ${LOG}/${label}.today ${LOG}/${label}.yesterday || rc=3
  74     mv ${tmpf} ${LOG}/${label}.today || rc=3
  75   fi
  76
  77   rm -f ${tmpf}
  78   exit ${rc}
  79 }