RoleManager.java

/**
 * RoleManager.java
 * Author: Francesco Rosso (rosso@eurix.it)
 * 
 * This file is part of PrestoPRIME Preservation Platform (P4).
 * 
 * Copyright (C) 2009-2012 EURIX Srl, Torino, Italy
 *  
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program 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 for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package eu.prestoprime.p4gui.services.auth;

import java.io.IOException;

import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;

public abstract class RoleManager {

	public static Logger logger = Logger.getLogger(RoleManager.class);

	public static enum USER_ROLE {
		guest(0), consumer(1), producer(2), admin(3), superadmin(4);

		private int level;

		private USER_ROLE(int level) {
			this.level = level;
		}

		public int getLevel() {
			return level;
		}
	};

	public static void checkRequestedRole(USER_ROLE requestedRole, USER_ROLE userRole, HttpServletResponse response) {

		if (requestedRole.getLevel() > userRole.getLevel()) {
			response.reset();
			try {
				response.sendError(HttpServletResponse.SC_UNAUTHORIZED);
			} catch (IOException e) {
				try {
					response.sendRedirect("index.jsp");
				} catch (IOException e1) {
					response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
				}
			}
		}
	}
}