#! /bin/sh
# Try to recover 2nd field of active file.

# =()<. ${NEWSCONFIG-@<NEWSCONFIG>@}>()=
. ${NEWSCONFIG-/usr/local/lib/news/bin/config}

PATH=$NEWSCTL/bin:$NEWSBIN/expire:$NEWSBIN:$NEWSPATH ; export PATH
umask $NEWSUMASK

cd $NEWSCTL || { echo "$0: can't cd to $NEWSCTL" >&2; exit 1; }

# check active file format
set ""`sed 1q active`
case $# in
4)	;;
*)	echo "$0: active file has other than 4 fields" >&2
	exit 1 ;;
esac

# lock news system
lock="$NEWSCTL/LOCK"
ltemp="$NEWSCTL/L.$$"
echo $$ >$ltemp
trap "rm -f $ltemp ; exit 0" 0 1 2 15
while true
do
	if newslock $ltemp $lock
	then
		trap "rm -f $ltemp $lock ; exit 0" 0 1 2 15
		break
	fi
	sleep 30
done

while read group max min fourth
do
	dir=`echo $group | tr . / `	# map ng name to directory name
	new=
	if test -d $NEWSARTS/$dir
	then
		new=`ls $NEWSARTS/$dir | egrep '^[0-9]+$' | sort -n | tail -1`
	fi
	case "$new" in
	"")	new=$max	;;	# no files -- preserve old value
	*)	if test "$new" -lt "$max"	# old value more recent (!)
		then
			new="$max"
		fi
		;;
	esac
	dots="`echo $max | tr 0123456789 ..........`"
	max="`expr 0000000000$new : '.*\('$dots'\)$'`"	# preserve length

	echo $group $max $min $fourth
done <active >active.new

# replace active, carefully
rm -f active.old
ln active active.old
mv active.new active

exit 0