check_clamd/check_clamd

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#!/bin/bash
#
# Nagios plugin to check clamav daemon status
#
# Author : Benjamin Renard <brenard@easter-eggs.com>
# Date : Wed, 12 Jun 2019 13:15:33 +0200
# Source : http://gogs.zionetrix.net/check_clamd
#
CLAMDSCAN=clamdscan
FILE_TO_CHECK="/etc/mtab"
DEBUG=0
function debug() {
if [ $DEBUG -eq 1 ]
then
>&2 echo -e "[DEBUG] $1"
fi
}
function usage() {
cat << EOF
Usage : $0 [-d] [-h] [options]
-c Path to clamdscan (Default : auto-detected)
-f Path of the file to check with clamdscan (Default : $FILE_TO_CHECK)
-d Debug mode
-h Show this message
EOF
}
while getopts "hf:c:n:d" OPTION
do
case $OPTION in
f)
FILE_TO_CHECK=$OPTARG
;;
c)
CLAMDSCAN=$OPTARG
;;
d)
DEBUG=1
;;
h)
usage
exit 0
;;
*)
echo "Unkown option '$OPTION'"
usage
exit 1
esac
done
CMD="$CLAMDSCAN --stream --stdout --infected --no-summary $FILE_TO_CHECK"
debug "clamdscan command = '$CMD'"
ERRORS=$( $CMD 2>&1 )
EXITCODE=$?
debug "clamdscan exit code = $EXITCODE"
debug "clamdscan output =\n$ERRORS"
if [ $EXITCODE -ne 0 ]
then
echo "CRITICAL - clamdscan exit with $EXITCODE"
[ -n "$ERRORS" ] && echo -e "clamdscan return:\n$ERRORS"
exit 2
elif [ -z "$ERRORS" ]
then
echo "OK - Clamav daemon is running and answer to scan request"
exit 0
else
echo "WARNING - clamdscan return some errors checking $FILE_TO_CHECK file"
echo -e "$ERRORS"
exit 1
fi