AuthenticationHandler.java

/*
* JBoss, a division of Red Hat
* Copyright 2006, Red Hat Middleware, LLC, and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.josso.gatein.authenticator;

import org.apache.commons.codec.binary.Base64;
import org.apache.log4j.Logger;

import javax.security.auth.login.LoginException;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

import org.exoplatform.container.ExoContainer;
import org.exoplatform.container.ExoContainerContext;
import org.exoplatform.container.RootContainer;

import org.exoplatform.services.security.Authenticator;
import org.exoplatform.services.security.Credential;
import org.exoplatform.services.security.PasswordCredential;
import org.exoplatform.services.security.UsernameCredential;

import org.exoplatform.services.rest.resource.ResourceContainer;

/**
 * This is a RESTful component that is invoked by central SSO servers like CAS server, JOSSO server etc, to invoke
 * Gatein authentication related queries during their own "Authentication process"
 *
 * @author <a href="mailto:sshah@redhat.com">Sohil Shah</a>
 */
@Path("/sso/authcallback")
public class AuthenticationHandler implements ResourceContainer {
    private static Logger log = Logger.getLogger(AuthenticationHandler.class);

    private Authenticator authenticator;

    @GET
    @Path("/auth/{1}/{2}")
    @Produces({MediaType.TEXT_PLAIN})
    public String authenticate(@PathParam("1") String encodedUsername, @PathParam("2") String encodedPassword) {
        try {
            String username = new String(Base64.decodeBase64(encodedUsername.getBytes()));
            String password = new String(Base64.decodeBase64(encodedPassword.getBytes()));

            if (log.isDebugEnabled())
                log.debug("Authenticating : " + username);

            if (log.isTraceEnabled())
                log.trace("Password: "+ password);

            //ExoContainer container = this.getContainer();
            if (authenticator  == null) {
                authenticator = (Authenticator) getContainer().getComponentInstanceOfType(Authenticator.class);

                if (log.isTraceEnabled())
                    log.trace("Fetched authenticator instance " + authenticator);
            }

            Credential[] credentials = new Credential[]{new UsernameCredential(username),
                    new PasswordCredential(password)};

            try {
                authenticator.validateUser(credentials);

                if (log.isTraceEnabled())
                    log.trace("User authentication successful for " + username);

                return "" + Boolean.TRUE;

            } catch (LoginException le) {

                if (log.isTraceEnabled())
                    log.trace("User authentication failure for " + username);

                return "" + Boolean.FALSE;
            }
        } catch (Exception e) {
            log.error(this, e);
            throw new RuntimeException(e);
        }
    }

    private ExoContainer getContainer() throws Exception {
        ExoContainer container = ExoContainerContext.getCurrentContainer();
        if (container instanceof RootContainer) {
            container = RootContainer.getInstance().getPortalContainer("portal");
        }
        return container;
    }
}