CredentialsFactory.java

/**
    Copyright 2012 Fahad Al-Khameesi, Madeleine Appert, Niklas Logren, Arild Matsson and Jonathan Orr�.
    
    This file is part of Bibbla.

    Bibbla 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.

    Bibbla 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 Bibbla.  If not, see <http://www.gnu.org/licenses/>.    
 **/

package dat255.grupp06.bibbla;

import dat255.grupp06.bibbla.model.Credentials;
import dat255.grupp06.bibbla.model.CredentialsMissingException;

/**
 * Creates session objects.
 * If class PrivateCredentials is present, uses its details for session creation.
 * If not, creates an anonymous session.
 * 
 * @author Niklas Logren
 */
public class CredentialsFactory {

	/**
	 * Returns a normal session if PrivateCredentials class is present,
	 * and returns an anonymous session if PrivateCredentials is missing.
	 * 
	 * Note: 
	 * All login-needed test code should automatically return success if 
	 * the session is anonymous!
	 */
	public static Credentials getCredentials() {

		// Try to use PrivateCredentials.
		Class<?> c;
		String name="", code="", pin="";
		try {
			// Look for PrivateCredentials.
			c = Class.forName("dat255.grupp06.bibbla.utils.PrivateCredentials");
			// Private credentials found! Extract values.
			name = (String) c.getField("name").get(null);
			code = (String) c.getField("code").get(null);
			pin = (String) c.getField("pin").get(null);
		} catch (Exception e) {
			// PrivateCredentials / its fields not found? Return an anonymous session.
			return null;
		}

		// Create a new normal Session, which keeps track of our session cookies.
		return new Credentials(name, code, pin);
	}

}