/*

 * Copyright (c) 2012, 2013, 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 com.sun.security.jgss;

import org.ietf.jgss.*;

/**

 * The extended GSSCredential interface for supporting additional

 * functionalities not defined by {@code org.ietf.jgss.GSSCredential}.

 * @since 1.8

 */

public interface ExtendedGSSCredential extends GSSCredential {

    /**

     * Impersonates a principal. In Kerberos, this can be implemented

     * using the Microsoft S4U2self extension.

     * <p>

     * A {@link GSSException#NO_CRED GSSException.NO_CRED} will be thrown if the

     * impersonation fails. A {@link GSSException#FAILURE GSSException.FAILURE}

     * will be  thrown if the impersonation method is not available to this

     * credential object.

     * @param name the name of the principal to impersonate

     * @return a credential for that principal

     * @throws GSSException  containing the following

     * major error codes:

     *   {@link GSSException#NO_CRED GSSException.NO_CRED}

     *   {@link GSSException#FAILURE GSSException.FAILURE}

     */

    public GSSCredential impersonate(GSSName name) throws GSSException;

}