/*

 * 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);

        }

    }

}