:  » EJB-Server » GlassFish » mail » javax » mail » Java Open Source

Java Open Source » EJB Server » GlassFish 
GlassFish » mail » javax » mail »
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.

 * @(#)  1.9 07/05/04

package javax.mail;


 * The class Authenticator represents an object that knows how to obtain
 * authentication for a network connection.  Usually, it will do this
 * by prompting the user for information.
 * <p>
 * Applications use this class by creating a subclass, and registering
 * an instance of that subclass with the session when it is created.
 * When authentication is required, the system will invoke a method
 * on the subclass (like getPasswordAuthentication).  The subclass's
 * method can query about the authentication being requested with a
 * number of inherited methods (getRequestingXXX()), and form an
 * appropriate message for the user.
 * <p>
 * All methods that request authentication have a default implementation
 * that fails.
 * @see
 * @see javax.mail.Session#getInstance(java.util.Properties,
 *          javax.mail.Authenticator)
 * @see javax.mail.Session#getDefaultInstance(java.util.Properties,
 *          javax.mail.Authenticator)
 * @see javax.mail.Session#requestPasswordAuthentication
 * @see javax.mail.PasswordAuthentication
 * @author  Bill Foote
 * @author  Bill Shannon
 * @version 1.9, 05/04/07

// There are no abstract methods, but to be useful the user must
// subclass.
public abstract class Authenticator {

    private InetAddress requestingSite;
    private int requestingPort;
    private String requestingProtocol;
    private String requestingPrompt;
    private String requestingUserName;

    private void reset() {
  requestingSite = null;
  requestingPort = -1;
  requestingProtocol = null;
  requestingPrompt = null;
  requestingUserName = null;

     * Ask the authenticator for a password.
     * <p>
     * @param addr The InetAddress of the site requesting authorization,
     *             or null if not known.
     * @param port the port for the requested connection
     * @param protocol The protocol that's requesting the connection
     *          (@see
     * @param prompt A prompt string for the user
     * @return The username/password, or null if one can't be gotten.
    final PasswordAuthentication requestPasswordAuthentication(
        InetAddress addr, int port, String protocol,
        String prompt, String defaultUserName) {

  requestingSite = addr;
  requestingPort = port;
  requestingProtocol = protocol;
  requestingPrompt = prompt;
  requestingUserName = defaultUserName;
  return getPasswordAuthentication();

     * @return the InetAddress of the site requesting authorization, or null
     *    if it's not available.
    protected final InetAddress getRequestingSite() {
  return requestingSite;

     * @return the port for the requested connection
    protected final int getRequestingPort() {
  return requestingPort;

     * Give the protocol that's requesting the connection.  Often this
     * will be based on a URLName.
     * @return the protcol
     * @see javax.mail.URLName#getProtocol
    protected final String getRequestingProtocol() {
  return requestingProtocol;

     * @return the prompt string given by the requestor
    protected final String getRequestingPrompt() {
  return requestingPrompt;

     * @return the default user name given by the requestor
    protected final String getDefaultUserName() {
  return requestingUserName;

     * Called when password authentication is needed.  Subclasses should
     * override the default implementation, which returns null. <p>
     * Note that if this method uses a dialog to prompt the user for this
     * information, the dialog needs to block until the user supplies the
     * information.  This method can not simply return after showing the
     * dialog.
     * @return The PasswordAuthentication collected from the
     *    user, or null if none is provided.
    protected PasswordAuthentication getPasswordAuthentication() {
  return null;
}  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.