1 /* 2 * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 /* 27 * 28 * (C) Copyright IBM Corp. 1999 All Rights Reserved. 29 * Copyright 1997 The Open Group Research Institute. All rights reserved. 30 */ 31 32 package sun.security.krb5.internal.rcache; 33 34 import java.util.Map; 35 import java.util.concurrent.ConcurrentHashMap; 36 37 import sun.security.krb5.internal.KerberosTime; 38 import sun.security.krb5.internal.KrbApErrException; 39 import sun.security.krb5.internal.ReplayCache; 40 41 /** 42 * This class stores replay caches. AuthTimeWithHash objects are categorized 43 * into AuthLists keyed by the names of client and server. 44 * 45 * @author Yanni Zhang 46 */ 47 public class MemoryCache extends ReplayCache { 48 49 // TODO: One day we'll need to read dynamic krb5.conf. 50 private static final int lifespan = KerberosTime.getDefaultSkew(); 51 private static final boolean DEBUG = sun.security.krb5.internal.Krb5.DEBUG; 52 53 private final Map<String,AuthList> content = new ConcurrentHashMap<>(); 54 55 @Override checkAndStore(KerberosTime currTime, AuthTimeWithHash time)56 public synchronized void checkAndStore(KerberosTime currTime, AuthTimeWithHash time) 57 throws KrbApErrException { 58 String key = time.client + "|" + time.server; 59 content.computeIfAbsent(key, k -> new AuthList(lifespan)) 60 .put(time, currTime); 61 if (DEBUG) { 62 System.out.println("MemoryCache: add " + time + " to " + key); 63 } 64 // TODO: clean up AuthList entries with only expired AuthTimeWithHash objects. 65 } 66 toString()67 public String toString() { 68 StringBuilder sb = new StringBuilder(); 69 for (AuthList rc: content.values()) { 70 sb.append(rc.toString()); 71 } 72 return sb.toString(); 73 } 74 } 75