1 /* 2 * Copyright (c) 2013, 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.*; 35 import sun.security.krb5.internal.KerberosTime; 36 import sun.security.krb5.internal.KrbApErrException; 37 import sun.security.krb5.internal.ReplayCache; 38 39 /** 40 * This class stores replay caches. AuthTimeWithHash objects are categorized 41 * into AuthLists keyed by the names of client and server. 42 * 43 * @author Yanni Zhang 44 */ 45 public class MemoryCache extends ReplayCache { 46 47 // TODO: One day we'll need to read dynamic krb5.conf. 48 private static final int lifespan = KerberosTime.getDefaultSkew(); 49 private static final boolean DEBUG = sun.security.krb5.internal.Krb5.DEBUG; 50 51 private final Map<String,AuthList> content = new HashMap<>(); 52 53 @Override 54 public synchronized void checkAndStore(KerberosTime currTime, AuthTimeWithHash time) 55 throws KrbApErrException { 56 String key = time.client + "|" + time.server; 57 AuthList rc = content.get(key); 58 if (DEBUG) { 59 System.out.println("MemoryCache: add " + time + " to " + key); 60 } 61 if (rc == null) { 62 rc = new AuthList(lifespan); 63 rc.put(time, currTime); 64 if (!rc.isEmpty()) { 65 content.put(key, rc); 66 } 67 } else { 68 if (DEBUG) { 69 System.out.println("MemoryCache: Existing AuthList:\n" + rc); 70 } 71 rc.put(time, currTime); 72 if (rc.isEmpty()) { 73 content.remove(key); 74 } 75 } 76 } 77 78 public String toString() { 79 StringBuilder sb = new StringBuilder(); 80 for (AuthList rc: content.values()) { 81 sb.append(rc.toString()); 82 } 83 return sb.toString(); 84 } 85 }