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/* Copyright 2004 Acegi Technology Pty Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.acegisecurity.providers.cas;

import org.acegisecurity.AuthenticationException;


/**
 * Validates a CAS service ticket.
 * 
 * 
 * Implementations must accept CAS proxy tickets, in addition to CAS service
 * tickets. If proxy tickets should be rejected, this is resolved by a {@link
 * CasProxyDecider} implementation (not by the TicketValidator).
 * 
 * 
 * 
 * Implementations may request a proxy granting ticket if wish,  although this
 * behaviour is not mandatory.
 * 
 *
 * @author Ben Alex
 * @version $Id: TicketValidator.java,v 1.2 2005/11/17 00:55:47 benalex Exp $
 */
public interface TicketValidator {
    //~ Methods ================================================================

    /**
     * Returns information about the ticket, if it is valid for this service.
     * 
     * 
     * Must throw an AuthenticationException if the ticket is not
     * valid for this service.
     * 
     *
     * @return details of the CAS service ticket
     */
    public TicketResponse confirmTicketValid(String serviceTicket)
        throws AuthenticationException;
}