--- a/jdk/src/share/classes/sun/security/krb5/internal/rcache/ReplayCache.java Tue Jul 02 17:38:10 2013 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,143 +0,0 @@
-/*
- * Copyright (c) 2000, 2012, 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.
- */
-
-/*
- *
- * (C) Copyright IBM Corp. 1999 All Rights Reserved.
- * Copyright 1997 The Open Group Research Institute. All rights reserved.
- */
-
-package sun.security.krb5.internal.rcache;
-
-import sun.security.krb5.internal.Krb5;
-import java.util.LinkedList;
-import java.util.ListIterator;
-import sun.security.krb5.internal.KerberosTime;
-
-/**
- * This class provides an efficient caching mechanism to store the timestamp of client authenticators.
- * The cache minimizes the memory usage by doing self-cleanup of expired items in the cache.
- *
- * @author Yanni Zhang
- */
-public class ReplayCache extends LinkedList<AuthTime> {
-
- private static final long serialVersionUID = 2997933194993803994L;
-
- // These 3 fields are now useless, keep for serialization compatibility
- private String principal;
- private CacheTable table;
- private int nap = 10 * 60 * 1000; //10 minutes break
-
- private boolean DEBUG = Krb5.DEBUG;
-
- /**
- * Constructs a ReplayCache for a client principal in specified <code>CacheTable</code>.
- * @param p client principal name.
- * @param ct CacheTable.
- */
- public ReplayCache (String p, CacheTable ct) {
- principal = p;
- table = ct;
- }
-
- /**
- * Puts the authenticator timestamp into the cache in descending order.
- * @param t <code>AuthTime</code>
- */
- public synchronized void put(AuthTime t, long currentTime) {
-
- if (this.size() == 0) {
- addFirst(t);
- }
- else {
- AuthTime temp = getFirst();
- if (temp.kerberosTime < t.kerberosTime) {
- // in most cases, newly received authenticator has
- // larger timestamp.
- addFirst(t);
- }
- else if (temp.kerberosTime == t.kerberosTime) {
- if (temp.cusec < t.cusec) {
- addFirst(t);
- }
- }
- else {
- //unless client clock being re-adjusted.
- ListIterator<AuthTime> it = listIterator(1);
- while (it.hasNext()) {
- temp = it.next();
- if (temp.kerberosTime < t.kerberosTime) {
- add(indexOf(temp), t);
- break;
- //we always put the bigger timestamp at the front.
- }
- else if (temp.kerberosTime == t.kerberosTime) {
- if (temp.cusec < t.cusec) {
- add(indexOf(temp), t);
- break;
- }
- }
- }
- }
- }
-
- // let us cleanup while we are here
- long timeLimit = currentTime - KerberosTime.getDefaultSkew() * 1000L;
- ListIterator<AuthTime> it = listIterator(0);
- AuthTime temp = null;
- int index = -1;
- while (it.hasNext()) {
- //search expired timestamps.
- temp = it.next();
- if (temp.kerberosTime < timeLimit) {
- index = indexOf(temp);
- break;
- }
- }
- if (index > -1) {
- do {
- //remove expired timestamps from the list.
- removeLast();
- } while(size() > index);
- }
- if (DEBUG) {
- printList();
- }
- }
-
-
- /**
- * Prints out the debug message.
- */
- private void printList() {
- Object[] total = toArray();
- for (int i = 0; i < total.length; i++) {
- System.out.println("object " + i + ": " + ((AuthTime)total[i]).kerberosTime + "/"
- + ((AuthTime)total[i]).cusec);
- }
- }
-
-}