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: head/etc/periodic/security/security.functions 322868 2017-08-25 00:28:56Z asomers $
  28 #
  29
  30 # This is a library file, so we only try to do something when sourced.
  31 case "$0" in
  32 */security.functions) exit 0 ;;
  33 esac
  34
  35 security_daily_compat_var security_status_logdir
  36 security_daily_compat_var security_status_diff_flags
  37
  38 #
  39 # Show differences in the output of an audit command
  40 #
  41
  42 LOG="${security_status_logdir}"
  43 rc=0
  44
  45 # Usage: COMMAND | check_diff [new_only] LABEL - MSG
  46 #        COMMAND > TMPFILE; check_diff [new_only] LABEL TMPFILE MSG
  47 #   if $1 is new_only, show only the 'new' part of the diff.
  48 #   LABEL is the base name of the ${LOG}/${label}.{today,yesterday} files.
  49
  50 check_diff() {
  51   unset IFS
  52   rc=0
  53   if [ "$1" = "new_only" ]; then
  54     shift
  55     filter="grep '^[>+][^+]'"
  56   else
  57     filter="cat"
  58   fi
  59   label="$1"; shift
  60   tmpf="$1"; shift
  61   msg="$1"; shift
  62
  63   if [ "${tmpf}" = "-" ]; then
  64     tmpf=`mktemp -t security`
  65     cat > ${tmpf}
  66   fi
  67
  68   if [ ! -f ${LOG}/${label}.today ]; then
  69     rc=1
  70     echo ""
  71     echo "No ${LOG}/${label}.today"
  72     cp ${tmpf} ${LOG}/${label}.today || rc=3
  73   fi
  74
  75   if ! cmp -s ${LOG}/${label}.today ${tmpf} >/dev/null; then
  76     [ $rc -lt 1 ] && rc=1
  77     echo ""
  78     echo "${msg}"
  79     diff ${security_status_diff_flags} ${LOG}/${label}.today \
  80         ${tmpf} | eval "${filter}"
  81     mv ${LOG}/${label}.today ${LOG}/${label}.yesterday || rc=3
  82     mv ${tmpf} ${LOG}/${label}.today || rc=3
  83   fi
  84
  85   rm -f ${tmpf}
  86   exit ${rc}
  87 }