#!/bin/sh
#
# $Id$
#
cd @PREFIX@/libexec/uvscan/

# Force a low default and then get the current version's value
cur_AVVER="1"
if [ -f file_id.diz ]; then
	cur_AVVER=`tail -1 file_id.diz | sed -e 's/^(\(4[0-9]*\)).*$/\1/'`
fi

# Find what the website has for the current version
ftp http://download.nai.com/products/datfiles/4.x/nai/update.ini >/dev/null
AVVER=`grep DATVersion update.ini | head -1 | cut -f2 -d= | sed -e 's/^\(4[0-9]*\).$/\1/'`

# Check to make sure the requested version is "newer" then the current
if [ "$cur_AVVER" -lt "$AVVER" ]; then
	for i in *.tar ; do
		mv $i $i.old
	done
	if ftp http://download.nai.com/products/datfiles/4.x/nai/dat-$AVVER.tar >/dev/null ; then
		for i in *.dat ; do
			cp -p $i $i.bak
		done
		if tar xf dat-$AVVER.tar ; then
			rm -f *.old
			echo `date` Successfully updated AntiVirus DAT files to $AVVER
		fi
	else
		rm -f dat-$AVVER.tar
	fi
fi