/*
* Copyright (c) 2007-2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package com.sun.org.apache.xml.internal.security.keys.storage;
import java.security.KeyStore;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.NoSuchElementException;
import com.sun.org.apache.xml.internal.security.keys.storage.implementations.KeyStoreResolver;
import com.sun.org.apache.xml.internal.security.keys.storage.implementations.SingleCertificateResolver;
/**
* This class collects customized resolvers for Certificates.
*/
public class StorageResolver {
/** {@link org.apache.commons.logging} logging facility */
private static java.util.logging.Logger log =
java.util.logging.Logger.getLogger(StorageResolver.class.getName());
/** Field storageResolvers */
private List<StorageResolverSpi> storageResolvers = null;
/**
* Constructor StorageResolver
*
*/
public StorageResolver() {}
/**
* Constructor StorageResolver
*
* @param resolver
*/
public StorageResolver(StorageResolverSpi resolver) {
this.add(resolver);
}
/**
* Method addResolver
*
* @param resolver
*/
public void add(StorageResolverSpi resolver) {
if (storageResolvers == null) {
storageResolvers = new ArrayList<StorageResolverSpi>();
}
this.storageResolvers.add(resolver);
}
/**
* Constructor StorageResolver
*
* @param keyStore
*/
public StorageResolver(KeyStore keyStore) {
this.add(keyStore);
}
/**
* Method addKeyStore
*
* @param keyStore
*/
public void add(KeyStore keyStore) {
try {
this.add(new KeyStoreResolver(keyStore));
} catch (StorageResolverException ex) {
log.log(java.util.logging.Level.SEVERE, "Could not add KeyStore because of: ", ex);
}
}
/**
* Constructor StorageResolver
*
* @param x509certificate
*/
public StorageResolver(X509Certificate x509certificate) {
this.add(x509certificate);
}
/**
* Method addCertificate
*
* @param x509certificate
*/
public void add(X509Certificate x509certificate) {
this.add(new SingleCertificateResolver(x509certificate));
}
/**
* Method getIterator
* @return the iterator for the resolvers.
*/
public Iterator<Certificate> getIterator() {
return new StorageResolverIterator(this.storageResolvers.iterator());
}
/**
* Class StorageResolverIterator
* This iterates over all the Certificates found in all the resolvers.
*/
static class StorageResolverIterator implements Iterator<Certificate> {
/** Field resolvers */
Iterator<StorageResolverSpi> resolvers = null;
/** Field currentResolver */
Iterator<Certificate> currentResolver = null;
/**
* Constructor StorageResolverIterator
*
* @param resolvers
*/
public StorageResolverIterator(Iterator<StorageResolverSpi> resolvers) {
this.resolvers = resolvers;
currentResolver = findNextResolver();
}
/** @inheritDoc */
public boolean hasNext() {
if (currentResolver == null) {
return false;
}
if (currentResolver.hasNext()) {
return true;
}
currentResolver = findNextResolver();
return (currentResolver != null);
}
/** @inheritDoc */
public Certificate next() {
if (hasNext()) {
return currentResolver.next();
}
throw new NoSuchElementException();
}
/**
* Method remove
*/
public void remove() {
throw new UnsupportedOperationException("Can't remove keys from KeyStore");
}
// Find the next storage with at least one element and return its Iterator
private Iterator<Certificate> findNextResolver() {
while (resolvers.hasNext()) {
StorageResolverSpi resolverSpi = resolvers.next();
Iterator<Certificate> iter = resolverSpi.getIterator();
if (iter.hasNext()) {
return iter;
}
}
return null;
}
}
}