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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).

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/*
 * 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 javax.security.auth.Subject;
import javax.security.sasl.SaslException;
import javax.security.sasl.SaslServer;

/**
 * A simple {@link SaslServer} to wrap calls to a realm GSSAPI sasl server.
 *
 * @author Darran Lofthouse
 */
public class GssapiServer implements SaslServer {

    private SubjectIdentity identity;
    private final SaslServer wrapped;

    GssapiServer(final SubjectIdentity identity, final SaslServer toWrap) {
        this.identity = identity;
        this.wrapped = toWrap;
    }

    @Override
    public String getMechanismName() {
        return wrapped.getMechanismName();
    }

    @Override
    public byte[] evaluateResponse(final byte[] response) throws SaslException {
        Subject subject = identity.getSubject();
        try {
            return Subject.doAs(subject, new PrivilegedExceptionAction() {

                @Override
                public byte[] run() throws SaslException {
                    return wrapped.evaluateResponse(response);
                }
            });
        } catch (PrivilegedActionException e) {
            throw (SaslException) e.getException();
        }
    }

    @Override
    public boolean isComplete() {
        return wrapped.isComplete();
    }

    @Override
    public String getAuthorizationID() {
        return wrapped.getAuthorizationID();
    }

    @Override
    public byte[] unwrap(final byte[] incoming, final int offset, final int len) throws SaslException {
        Subject subject = identity.getSubject();
        try {
            return Subject.doAs(subject, new PrivilegedExceptionAction() {

                @Override
                public byte[] run() throws SaslException {
                    return wrapped.unwrap(incoming, offset, len);
                }
            });
        } catch (PrivilegedActionException e) {
            throw (SaslException) e.getException();
        }
    }

    @Override
    public byte[] wrap(final byte[] outgoing, final int offset, final int len) throws SaslException {
        Subject subject = identity.getSubject();
        try {
            return Subject.doAs(subject, new PrivilegedExceptionAction() {

                @Override
                public byte[] run() throws SaslException {
                    return wrapped.wrap(outgoing, offset, len);
                }
            });
        } catch (PrivilegedActionException e) {
            throw (SaslException) e.getException();
        }
    }

    @Override
    public Object getNegotiatedProperty(final String propName) {
        return wrapped.getNegotiatedProperty(propName);
    }

    @Override
    public void dispose() throws SaslException {
        Subject subject = getSubject();
        try {
            Subject.doAs(subject, new PrivilegedExceptionAction() {

                @Override
                public Void run() throws SaslException {
                    wrapped.dispose();
                    return null;
                }
            });
        } catch (PrivilegedActionException e) {
            throw (SaslException) e.getException();
        }
        identity.dispose();
        identity = null;
    }

    private Subject getSubject() throws SaslException {
        if (identity != null) {
            return identity.getSubject();
        }

        throw new SaslException("dispose() has already been called on this SaslServer.");
    }

}