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/usr/share/rkhunter/scripts/   drwxr-xr-x
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Viewing file:     check_update.sh (4.51 KB)      -rwxr-xr-x

#!/bin/sh

if [ "$1" = "" -o "$2" = "" -o "$3" = "" -o "$4" = "" ]; then
	echo "Usage $0 <path/to/rkhunter.conf> <path/to/mirrors.dat> </path/to/dbdir> </path/to/logfile>" 
	exit 1
fi 

WGETFOUND=0
CONFFILE=$1
# Mirrors
MIRRORFILE=$2
DBDIR=$3
LOGFILE=$4

debug() {
	echo $1 >> ${LOGFILE}
}

debug "--------------------------------------------------"
debug "Updater output:"

BINPATHS="/bin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin /sw/bin"

for I in ${BINPATHS}; do
	J=${I}"/wget"
	if [ -f ${J} ]; then
		WGETFOUND=1
		WGETBINARY=${J}
	fi
done

if [ ${WGETFOUND} -eq 0 ]; then
	echo "Fatal error: can't find WGet"
	exit 1
fi

# Retrieve file info
FILEINFO=`cat ${CONFFILE} | grep 'UPDATEFILEINFO=' | tr -d 'UPDATEFILEINFO='`

if [ "${FILEINFO}" = "" ]; then
	echo "Fatal error. Missing line 'UPDATEFILEINFO=' or wrong/non-existing file"
	echo "Please check your configuration file (${CONFFILE})"
	exit 1
fi

checkupdate() {
	echo -n "${FILEDESC}: "  
	UPDATEDBURL="${FIRSTMIRROR}/${VERSIONUPDATEURL}"
	LATESTVERSION="`${WGETBINARY} -q -O - ${UPDATEDBURL}`"
	if [ "${LATESTVERSION}" = "" ]; then
		echo "ERROR"
		echo "Fatal error: Problem while fetching file"
		exit 1
	fi

	CURRENTVERSION=`cat ${DBDIR}/${FILENAME} | grep '000:version' | cut -d ':' -f3`
	if [ "${CURRENTVERSION}" = "" ]; then
		CURRENTVERSION=`cat ${DBDIR}/${FILENAME} | grep 'version=' | cut -d '=' -f2`
		if [ "${CURRENTVERSION}" = "" ]; then
			echo "ERROR"
			echo "Fatal error: no valid version tag in filename"
			exit 1
		fi
	fi

	if [ "${LATESTVERSION}" = "" ]; then
		echo "Skipped"
		echo "Error: can't obtain valid version tag from downloaded file (or 404 error). Possible outdated mirror."
		debug "Tried to fetch ${UPDATEDBURL}"
	else
		if [ ${CURRENTVERSION} -lt ${LATESTVERSION} ]; then
			echo "${WHITE}Update available${NORMAL}"

			# Fetch file
			GETFILE="${FIRSTMIRROR}/${FILENAME}.gz"
			TMPFILE="`mktemp ${DBDIR}/rkhunter.upd.gz.XXXXXX`" || exit 1

			if [ ! "`${WGETBINARY} -q -O - ${GETFILE} | gunzip -c > ${TMPFILE}`" ]; then	      
				cat ${TMPFILE} >${DBDIR}/${FILENAME}
				echo "  Action: Database updated (current version: ${CURRENTVERSION}, new version ${LATESTVERSION})"
			else
				echo "Fatal error: Can't retrieve file: ${GETFILE}"
			fi
			rm -f ${TMPFILE}
		else
			if [ ${CURRENTVERSION} -gt ${LATESTVERSION} ]; then
				echo "Mirror outdated. Skipped"
				echo "  Info (current version: ${CURRENTVERSION}, version of mirror: ${LATESTVERSION})"
			else
				echo "Up to date"
			fi
		fi
	fi
}


if [ -f ${MIRRORFILE} ]; then
	MIRRORSVERSION=`cat ${MIRRORFILE} | grep 'version=' | head -n 1`

	# Retrieve first mirror
	FIRSTMIRROR=`cat ${MIRRORFILE} | grep 'mirror=' | head -n 1`
	OTHERMIRRORS=`cat ${MIRRORFILE} | grep -v 'version=' | grep -v ${FIRSTMIRROR}`

	# Clean up files    
	if [ -f ${MIRRORFILE}.new ]; then
		rm -f ${MIRRORFILE}.new
	fi

	echo "${MIRRORSVERSION}" > ${MIRRORFILE}.new
	for I in ${OTHERMIRRORS}; do
		echo ${I} >> ${MIRRORFILE}.new
	done;

	echo ${FIRSTMIRROR} >> ${MIRRORFILE}.new
	# Use rotated file
	cat ${MIRRORFILE}.new >${MIRRORFILE}
	echo "Mirrorfile ${MIRRORFILE} rotated"
	rm -f ${MIRRORFILE}.new

	FIRSTMIRROR=`echo ${FIRSTMIRROR} | cut -d '=' -f2`
	echo "Using mirror ${FIRSTMIRROR}"

	##############################################################################################

	LATESTVERSION="unknown"
	FILEDESC="[DB] Mirror file                      "
	FILENAME="mirrors.dat"
	VERSIONUPDATEURL="mirrors.dat.ver"

	checkupdate

	###########################

	LATESTVERSION="unknown"
	FILEDESC="[DB] MD5 hashes system binaries       "
	FILENAME="defaulthashes.dat"
	VERSIONUPDATEURL="defaulthashes.dat.ver"

	checkupdate

	###########################

	LATESTVERSION="unknown"
	FILEDESC="[DB] Operating System information     "
	FILENAME="os.dat"
	VERSIONUPDATEURL="os.dat.ver"

	checkupdate

	###########################

	LATESTVERSION="unknown"
	FILEDESC="[DB] MD5 blacklisted tools/binaries   "
	FILENAME="md5blacklist.dat"
	VERSIONUPDATEURL="md5blacklist.dat.ver"

	checkupdate

	###########################

	LATESTVERSION="unknown"
	FILEDESC="[DB] Known good program versions      "
	FILENAME="programs_good.dat"
	VERSIONUPDATEURL="programs_good.dat.ver"

	checkupdate

	###########################

	LATESTVERSION="unknown"
	FILEDESC="[DB] Known bad program versions       "
	FILENAME="programs_bad.dat"
	VERSIONUPDATEURL="programs_bad.dat.ver"

	checkupdate

	##############################################################################################

	echo "" ; echo ""; echo ""

else

	echo "Fatal error: ${MIRRORFILE} does not exist"
	exit 1

fi