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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2009, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors. 
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.security.auth.spi;

/**
 * 
 * Interface that must be implemented by login module input validators.
 * 
 * 
 * @author Stefan Guilhen
 */
public interface InputValidator
{

   /**
    * 
    * Validates the specified username and password.
    * 
    * 
    * @param username the username to be validated.
    * @param password the password to be validated.
    * @throws InputValidationException if the validation process considers the username and/or the password invalid.
    */
   public void validateUsernameAndPassword(String username, String password) throws InputValidationException;
}