Glassfish example source code file (HttpAuthenticator.java)

This example Glassfish source code file (HttpAuthenticator.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Glassfish tags/keywords

appclientsecurityinfo, httpauthenticator, initiating, iterator, iterator, log, logging, net, network, passwordauthentication, passwordcredential, passwordcredential, principal, principal, security, set, string, string, subject, util

The Glassfish HttpAuthenticator.java source code

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 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
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 * 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
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/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 packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
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 * and therefore, elected the GPL Version 2 license, then the option applies
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 */

package org.glassfish.appclient.client.acc;

import com.sun.enterprise.security.appclient.integration.AppClientSecurityInfo;
import com.sun.enterprise.security.auth.login.common.PasswordCredential;
import com.sun.enterprise.security.common.ClientSecurityContext;


import java.net.Authenticator;
import java.net.PasswordAuthentication;
import java.security.Principal;
import java.util.Iterator;
import java.util.Set;
import java.util.logging.Logger;
import java.util.logging.Level;
import javax.security.auth.Subject;
/**
 * This is the callback object that gets called when a protected resource
 * needs to be accessed and authentication information is needed. Pops up
 * a UI to input username and password.
 */
public class HttpAuthenticator extends Authenticator 
{
    public static final boolean debug = false;

    private static Logger _logger = Logger.getLogger(HttpAuthenticator.class.getName());

    private final AppClientSecurityInfo.CredentialType loginType;
    private final AppClientSecurityInfo securityInfo;

    /**
     * Create the authenticator.
     */
    public HttpAuthenticator(final AppClientSecurityInfo secInfo,
            final AppClientSecurityInfo.CredentialType loginType) {
        this.securityInfo = secInfo;
        this.loginType = loginType;
    }

    /**
     * This is called when authentication is needed for a protected
     * web resource. It looks for the authentication data in the subject.
     * If the data is not found then login is invoked on the login context.
     */
    @Override
    protected PasswordAuthentication getPasswordAuthentication() 
    {
	String user = null;
	char[] password = null;
	Subject subject = null;

	String scheme = getRequestingScheme();
        if (_logger.isLoggable(Level.FINE)) {
            _logger.fine("scheme=" + scheme);
            _logger.fine("requesting prompt=" + getRequestingPrompt());
            _logger.fine("requesting protocol=" + getRequestingProtocol());
        }

	ClientSecurityContext cont = ClientSecurityContext.getCurrent();
	subject = (cont != null) ? cont.getSubject() : null;
	user = getUserName(subject);
	password = getPassword(subject);
	if(user == null || password == null) {
	    try {
                if (_logger.isLoggable(Level.FINE)) {
                    _logger.fine("Initiating login again...");
                }
                
		securityInfo.doClientLogin(
                loginType);
		cont = ClientSecurityContext.getCurrent();
		subject = cont.getSubject();
		user = getUserName(subject);
		password = getPassword(subject);
	    } catch(Exception e) {
                _logger.log(Level.FINE, "Exception " + e.toString(), e);
	        return null;
	    }
	}
        if (_logger.isLoggable(Level.FINE)) {
            _logger.fine("Username:" + user);
        }
	return new PasswordAuthentication(user, password);
    }

    /**
     * Return the username from the subject.
     */
    private String getUserName(Subject s) {
	String user = null; 
	if(s == null)
	    return null;
	Set principalSet = s.getPrincipals();
	Iterator itr = principalSet.iterator();
	if(itr.hasNext()) {
	    Principal p = (Principal) itr.next();
	    user = p.getName();
	}
	return user;
    }

    /**
     * Return the password for the subject.
     */
    private char[] getPassword(Subject s) {
	char[] password = null;
	if(s == null)
	    return null;
	Set credentials = s.getPrivateCredentials();
	Iterator credIter = credentials.iterator();
	if(credIter.hasNext()) {
	    Object o = credIter.next();
	    if(o instanceof PasswordCredential) {
		PasswordCredential pc = (PasswordCredential) o;
		// CHECK REALM.
	        password = pc.getPassword();
	    }
	}
	return password;
    }
}