/* * 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.ccache; import sun.security.krb5.*;import sun.security.krb5.internal.*;import java.util.StringTokenizer;import java.util.Vector;import java.io.IOException;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.BufferedReader;import java.io.InputStreamReader; /** * CredentialsCache stores credentials(tickets, session keys, etc) in a semi-permanent store * for later use by different program. * * @author Yanni Zhang */public abstract class CredentialsCache {    static CredentialsCache singleton = null;    static String cacheName;    private static boolean DEBUG = Krb5.DEBUG;     public static CredentialsCache getInstance(PrincipalName principal) {        return FileCredentialsCache.acquireInstance(principal, null);    }     public static CredentialsCache getInstance(String cache) {        if ((cache.length() >= 5) && cache.substring(0, 5).equalsIgnoreCase("FILE:")) {            return FileCredentialsCache.acquireInstance(null, cache.substring(5));        }        // XXX else, memory credential cache        // default is file credential cache.        return FileCredentialsCache.acquireInstance(null, cache);    }     public static CredentialsCache getInstance(PrincipalName principal,                                               String cache) {         // XXX Modify this to use URL framework of the JDK        if (cache != null &&            (cache.length() >= 5) &&            cache.regionMatches(true, 0, "FILE:", 0, 5)) {            return FileCredentialsCache.acquireInstance(principal,                                                        cache.substring(5));        }         // When cache is null, read the default cache.        // XXX else ..we haven't provided support for memory credential cache        // yet. (supported in native code)        // default is file credentials cache.        return FileCredentialsCache.acquireInstance(principal, cache);     }     /**     * Gets the default credentials cache.     */    public static CredentialsCache getInstance() {        // Default credentials cache is file-based.        return FileCredentialsCache.acquireInstance();    }     public static CredentialsCache create(PrincipalName principal, String name) {        if (name == null) {            throw new RuntimeException("cache name error");        }        if ((name.length() >= 5)            && name.regionMatches(true, 0, "FILE:", 0, 5)) {            name = name.substring(5);            return (FileCredentialsCache.New(principal, name));        }        // else return file credentials cache        // default is file credentials cache.        return (FileCredentialsCache.New(principal, name));    }     public static CredentialsCache create(PrincipalName principal) {        // create a default credentials cache for a specified principal        return (FileCredentialsCache.New(principal));    }     public static String cacheName() {        return cacheName;    }     public abstract PrincipalName getPrimaryPrincipal();    public abstract void update(Credentials c);    public abstract void save() throws IOException, KrbException;    public abstract Credentials[] getCredsList();    public abstract Credentials getDefaultCreds();    public abstract Credentials getCreds(PrincipalName sname, Realm srealm) ;    public abstract Credentials getCreds(LoginOptions options, PrincipalName sname, Realm srealm) ;}