| /* |
| * Copyright (c) 2000, 2006, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.provider.certpath; |
| |
| import java.security.InvalidAlgorithmParameterException; |
| import java.security.cert.Certificate; |
| import java.security.cert.CRL; |
| import java.util.Collection; |
| import java.util.ConcurrentModificationException; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.security.cert.CertSelector; |
| import java.security.cert.CertStore; |
| import java.security.cert.CertStoreException; |
| import java.security.cert.CertStoreParameters; |
| import java.security.cert.CollectionCertStoreParameters; |
| import java.security.cert.CRLSelector; |
| import java.security.cert.CertStoreSpi; |
| |
| /** |
| * A <code>CertStore</code> that retrieves <code>Certificates</code> and |
| * <code>CRL</code>s from a <code>Collection</code>. |
| * <p> |
| * Before calling the {@link #engineGetCertificates engineGetCertificates} or |
| * {@link #engineGetCRLs engineGetCRLs} methods, the |
| * {@link #CollectionCertStore(CertStoreParameters) |
| * CollectionCertStore(CertStoreParameters)} constructor is called to |
| * create the <code>CertStore</code> and establish the |
| * <code>Collection</code> from which <code>Certificate</code>s and |
| * <code>CRL</code>s will be retrieved. If the specified |
| * <code>Collection</code> contains an object that is not a |
| * <code>Certificate</code> or <code>CRL</code>, that object will be |
| * ignored. |
| * <p> |
| * <b>Concurrent Access</b> |
| * <p> |
| * As described in the javadoc for <code>CertStoreSpi</code>, the |
| * <code>engineGetCertificates</code> and <code>engineGetCRLs</code> methods |
| * must be thread-safe. That is, multiple threads may concurrently |
| * invoke these methods on a single <code>CollectionCertStore</code> |
| * object (or more than one) with no ill effects. |
| * <p> |
| * This is achieved by requiring that the <code>Collection</code> passed to |
| * the {@link #CollectionCertStore(CertStoreParameters) |
| * CollectionCertStore(CertStoreParameters)} constructor (via the |
| * <code>CollectionCertStoreParameters</code> object) must have fail-fast |
| * iterators. Simultaneous modifications to the <code>Collection</code> can thus be |
| * detected and certificate or CRL retrieval can be retried. The fact that |
| * <code>Certificate</code>s and <code>CRL</code>s must be thread-safe is also |
| * essential. |
| * |
| * @see java.security.cert.CertStore |
| * |
| * @since 1.4 |
| * @author Steve Hanna |
| */ |
| public class CollectionCertStore extends CertStoreSpi { |
| |
| private Collection<?> coll; |
| |
| /** |
| * Creates a <code>CertStore</code> with the specified parameters. |
| * For this class, the parameters object must be an instance of |
| * <code>CollectionCertStoreParameters</code>. The <code>Collection</code> |
| * included in the <code>CollectionCertStoreParameters</code> object |
| * must be thread-safe. |
| * |
| * @param params the algorithm parameters |
| * @exception InvalidAlgorithmParameterException if params is not an |
| * instance of <code>CollectionCertStoreParameters</code> |
| */ |
| public CollectionCertStore(CertStoreParameters params) |
| throws InvalidAlgorithmParameterException |
| { |
| super(params); |
| if (!(params instanceof CollectionCertStoreParameters)) |
| throw new InvalidAlgorithmParameterException( |
| "parameters must be CollectionCertStoreParameters"); |
| coll = ((CollectionCertStoreParameters) params).getCollection(); |
| } |
| |
| /** |
| * Returns a <code>Collection</code> of <code>Certificate</code>s that |
| * match the specified selector. If no <code>Certificate</code>s |
| * match the selector, an empty <code>Collection</code> will be returned. |
| * |
| * @param selector a <code>CertSelector</code> used to select which |
| * <code>Certificate</code>s should be returned. Specify <code>null</code> |
| * to return all <code>Certificate</code>s. |
| * @return a <code>Collection</code> of <code>Certificate</code>s that |
| * match the specified selector |
| * @throws CertStoreException if an exception occurs |
| */ |
| public Collection<Certificate> engineGetCertificates |
| (CertSelector selector) throws CertStoreException { |
| if (coll == null) { |
| throw new CertStoreException("Collection is null"); |
| } |
| // Tolerate a few ConcurrentModificationExceptions |
| for (int c = 0; c < 10; c++) { |
| try { |
| HashSet<Certificate> result = new HashSet<Certificate>(); |
| Iterator<?> i = coll.iterator(); |
| if (selector != null) { |
| while (i.hasNext()) { |
| Object o = i.next(); |
| if ((o instanceof Certificate) && |
| selector.match((Certificate) o)) |
| result.add((Certificate)o); |
| } |
| } else { |
| while (i.hasNext()) { |
| Object o = i.next(); |
| if (o instanceof Certificate) |
| result.add((Certificate)o); |
| } |
| } |
| return(result); |
| } catch (ConcurrentModificationException e) { } |
| } |
| throw new ConcurrentModificationException("Too many " |
| + "ConcurrentModificationExceptions"); |
| } |
| |
| /** |
| * Returns a <code>Collection</code> of <code>CRL</code>s that |
| * match the specified selector. If no <code>CRL</code>s |
| * match the selector, an empty <code>Collection</code> will be returned. |
| * |
| * @param selector a <code>CRLSelector</code> used to select which |
| * <code>CRL</code>s should be returned. Specify <code>null</code> |
| * to return all <code>CRL</code>s. |
| * @return a <code>Collection</code> of <code>CRL</code>s that |
| * match the specified selector |
| * @throws CertStoreException if an exception occurs |
| */ |
| public Collection<CRL> engineGetCRLs(CRLSelector selector) |
| throws CertStoreException |
| { |
| if (coll == null) |
| throw new CertStoreException("Collection is null"); |
| |
| // Tolerate a few ConcurrentModificationExceptions |
| for (int c = 0; c < 10; c++) { |
| try { |
| HashSet<CRL> result = new HashSet<CRL>(); |
| Iterator<?> i = coll.iterator(); |
| if (selector != null) { |
| while (i.hasNext()) { |
| Object o = i.next(); |
| if ((o instanceof CRL) && selector.match((CRL) o)) |
| result.add((CRL)o); |
| } |
| } else { |
| while (i.hasNext()) { |
| Object o = i.next(); |
| if (o instanceof CRL) |
| result.add((CRL)o); |
| } |
| } |
| return(result); |
| } catch (ConcurrentModificationException e) { } |
| } |
| throw new ConcurrentModificationException("Too many " |
| + "ConcurrentModificationExceptions"); |
| } |
| } |
