/* * Copyright (c) 2005, 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 sun.security.jgss.wrapper; import org.ietf.jgss.*;import javax.security.auth.kerberos.ServicePermission; /** * This class is an utility class for Kerberos related stuff. * @author Valerie Peng * @since 1.6 */class Krb5Util {     // Return the Kerberos TGS principal name using the domain    // of the specified <code>name</code>    static String getTGSName(GSSNameElement name)        throws GSSException {        String krbPrinc = name.getKrbName();        int atIndex = krbPrinc.indexOf("@");        String realm = krbPrinc.substring(atIndex + 1);        StringBuffer buf = new StringBuffer("krbtgt/");        buf.append(realm).append('@').append(realm);        return buf.toString();    }     // Perform the Service Permission check using the specified    // <code>target</code> and <code>action</code>    static void checkServicePermission(String target, String action) {        SecurityManager sm = System.getSecurityManager();        if (sm != null) {            SunNativeProvider.debug("Checking ServicePermission(" +                                    target + ", " + action + ")");            ServicePermission perm =                new ServicePermission(target, action);            sm.checkPermission(perm);        }    }}