#!/bin/sh
# create hash links on all files in the specified directory
#

if [ -z "$1" -o ! -d "$1" ] ; then
    echo "'$1' must be a directory." >&2
    exit 1
fi

if ! cd $1 ; then
    echo "Cannot change cwd to $1" >&2
    exit 2
fi

# remove old links
for i in ????????.* ; do
	if  [ -h $i ] ; then
		rm -f $i
	fi
done

# create new links
for i in * ; do
	if [ -r $i -a ! -d $i ] ; then
    		hash=$(openssl x509 -hash -noout -in $i 2>/dev/null)
    		if [ -z "$hash" ] ; then
    		    continue
    		fi
    		suffix=0
    		while [ -e $hash.$suffix ] ; do
    		    suffix=$((suffix + 1))
    		done
    		ln -sf $i $hash.$suffix
	fi
done