| /* |
| * Copyright (c) 2014, 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 com.oracle.security.ucrypto; |
| |
| import java.nio.ByteBuffer; |
| import java.util.Set; |
| import java.util.Arrays; |
| import java.util.concurrent.ConcurrentSkipListSet; |
| import java.lang.ref.*; |
| |
| import java.security.*; |
| import java.security.spec.*; |
| import javax.crypto.*; |
| |
| import javax.crypto.spec.SecretKeySpec; |
| import javax.crypto.spec.IvParameterSpec; |
| |
| /** |
| * Internal class for context resource clean up. |
| * |
| * @since 9 |
| */ |
| final class CipherContextRef extends PhantomReference<NativeCipher> |
| implements Comparable<CipherContextRef> { |
| |
| private static ReferenceQueue<NativeCipher> refQueue = |
| new ReferenceQueue<NativeCipher>(); |
| |
| // Needed to keep these references from being GC'ed until when their |
| // referents are GC'ed so we can do post-mortem processing |
| private static Set<CipherContextRef> refList = |
| new ConcurrentSkipListSet<CipherContextRef>(); |
| |
| final long id; |
| final boolean encrypt; |
| |
| private static void drainRefQueueBounded() { |
| while (true) { |
| CipherContextRef next = (CipherContextRef) refQueue.poll(); |
| if (next == null) break; |
| next.dispose(true); |
| } |
| } |
| |
| CipherContextRef(NativeCipher nc, long id, boolean encrypt) { |
| super(nc, refQueue); |
| this.id = id; |
| this.encrypt = encrypt; |
| refList.add(this); |
| UcryptoProvider.debug("Resource: trace CipherCtxt " + this.id); |
| drainRefQueueBounded(); |
| } |
| |
| public int compareTo(CipherContextRef other) { |
| if (this.id == other.id) { |
| return 0; |
| } else { |
| return (this.id < other.id) ? -1 : 1; |
| } |
| } |
| |
| void dispose(boolean doCancel) { |
| refList.remove(this); |
| try { |
| if (doCancel) { |
| UcryptoProvider.debug("Resource: cancel CipherCtxt " + id); |
| int k = NativeCipher.nativeFinal(id, encrypt, null, 0); |
| if (k < 0) { |
| UcryptoProvider.debug |
| ("Resource: error cancelling CipherCtxt " + id + |
| " " + new UcryptoException(-k).getMessage()); |
| } |
| } else { |
| UcryptoProvider.debug("Resource: untrace CipherCtxt " + id); |
| } |
| } finally { |
| this.clear(); |
| } |
| } |
| } |