org.jboss.sasl.gssapi.GssapiServerFactory Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of wildfly-client-all

This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

There is a newer version: 35.0.0.Beta1

Show newest version

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014, Red Hat, Inc., 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.sasl.gssapi;

import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.security.Provider;
import java.security.Security;
import java.util.Map;

import javax.security.auth.Subject;
import javax.security.auth.callback.CallbackHandler;
import javax.security.sasl.SaslException;
import javax.security.sasl.SaslServer;
import javax.security.sasl.SaslServerFactory;

import org.jboss.sasl.JBossSaslProvider;

/**
 * A {@link SaslServerFactory} to locate the default GSSAPI mechanism and wrap it in our own version to ensure our identity is
 * set on the access control context.
 *
 * @author Darran Lofthouse
 */
public class GssapiServerFactory implements SaslServerFactory {

    public static final String GSSAPI = "GSSAPI";
    static final String SUBJECT_FACTORY = "org.jboss.sasl.gssapi.subject_factory";

    private static final String GSSAPI_KEY = SaslServerFactory.class.getSimpleName() + "." + GSSAPI;

    @Override
    public String[] getMechanismNames(Map props) {
        if (props.containsKey(SUBJECT_FACTORY) && findFactoryForGssapi(props) != null) {
            return new String[] { GSSAPI };
        } else {
            return new String[] {};
        }
    }

    @Override
    public SaslServer createSaslServer(final String mechanism, final String protocol, final String serverName, final Map props,
            final CallbackHandler cbh) throws SaslException {
        SubjectFactory factory = (SubjectFactory) props.get(SUBJECT_FACTORY);
        if (factory != null) {
            final SaslServerFactory saslFactory = findFactoryForGssapi(props);
            if (saslFactory != null) {
                final SubjectIdentity identity = factory.getSubjectIdentity(protocol, serverName);
                if (identity != null)
                    try {
                        return Subject.doAs(identity.getSubject(), new PrivilegedExceptionAction() {

                            @Override
                            public SaslServer run() throws SaslException {
                                SaslServer realServer = saslFactory.createSaslServer(mechanism, protocol, serverName, props, cbh);
                                return new GssapiServer(identity, realServer);
                            }
                        });
                    } catch (PrivilegedActionException e) {
                        identity.dispose();
                        throw (SaslException)e.getException();
                    }

            }
        }

        return null;
    }

    private SaslServerFactory findFactoryForGssapi(Map props) {
        Provider[] providers = Security.getProviders();

        for (Provider current : providers) {
            // Looking for the first provider that is not our provider.
            if (current instanceof JBossSaslProvider == false) {
                String gssapiFactory = current.getProperty(GSSAPI_KEY);

                if (gssapiFactory != null) {
                    try {
                        SaslServerFactory theFactory = Class.forName(gssapiFactory, true, current.getClass().getClassLoader())
                                .asSubclass(SaslServerFactory.class).newInstance();
                        for (String mech : theFactory.getMechanismNames(props)) {
                            if (GSSAPI.equals(mech)) {
                                return theFactory;
                            }
                        }
                    } catch (InstantiationException e) {
                    } catch (IllegalAccessException e) {
                    } catch (ClassNotFoundException e) {
                    }
                }
            }
        }

        return null;
    }

}