org.exoplatform.acceptance.security.CrowdAuthenticationProviderWrapper.java Source code

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Here is the source code for org.exoplatform.acceptance.security.CrowdAuthenticationProviderWrapper.java

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/*
 * Copyright (C) 2011-2014 eXo Platform SAS.
 *
 * This file is part of eXo Acceptance Webapp.
 *
 * eXo Acceptance Webapp 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 3 of
 * the License, or (at your option) any later version.
 *
 * eXo Acceptance Webapp 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 eXo Acceptance Webapp; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see <http://www.gnu.org/licenses/>.
 */
package org.exoplatform.acceptance.security;

import com.atlassian.crowd.integration.springsecurity.RemoteCrowdAuthenticationProvider;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;

/**
 * This authentication provider is wrapping the one used by Crowd to replace Crowd groups by Application Roles from {@link org.exoplatform.acceptance.security.AppAuthority}
 *
 * @author Arnaud Hritier ( aheritier@exoplatform.com )
 * @see CrowdGrantedAuthoritiesMapper
 * @since 2.0.0
 */
public class CrowdAuthenticationProviderWrapper implements AuthenticationProvider {
    private final RemoteCrowdAuthenticationProvider crowdAuthenticationProvider;

    private final CrowdGrantedAuthoritiesMapper grantedAuthoritiesMapper;

    /**
     * <p>Constructor for CrowdAuthenticationProviderWrapper.</p>
     *
     * @param crowdAuthenticationProvider a {@link com.atlassian.crowd.integration.springsecurity.RemoteCrowdAuthenticationProvider} object.
     * @param grantedAuthoritiesMapper    a {@link org.exoplatform.acceptance.security.CrowdGrantedAuthoritiesMapper} object.
     */
    public CrowdAuthenticationProviderWrapper(RemoteCrowdAuthenticationProvider crowdAuthenticationProvider,
            CrowdGrantedAuthoritiesMapper grantedAuthoritiesMapper) {
        this.crowdAuthenticationProvider = crowdAuthenticationProvider;
        this.grantedAuthoritiesMapper = grantedAuthoritiesMapper;
    }

    /**
     * {@inheritDoc}
     * Performs authentication with the same contract as {@link
     * org.springframework.security.authentication.AuthenticationManager#authenticate(Authentication)}.
     */
    @Override
    public Authentication authenticate(Authentication authentication) throws AuthenticationException {
        Authentication crowdAuthentication = crowdAuthenticationProvider.authenticate(authentication);
        return new UsernamePasswordAuthenticationToken(crowdAuthentication.getPrincipal(),
                crowdAuthentication.getCredentials(),
                grantedAuthoritiesMapper.mapAuthorities(crowdAuthentication.getAuthorities()));
    }

    /**
     * {@inheritDoc}
     * Returns <code>true</code> if this <Code>AuthenticationProvider</code> supports the indicated
     * <Code>Authentication</code> object.
     * <p>
     * Returning <code>true</code> does not guarantee an <code>AuthenticationProvider</code> will be able to
     * authenticate the presented instance of the <code>Authentication</code> class. It simply indicates it can support
     * closer evaluation of it. An <code>AuthenticationProvider</code> can still return <code>null</code> from the
     * {@link #authenticate(Authentication)} method to indicate another <code>AuthenticationProvider</code> should be
     * tried.
     * </p>
     * <p>Selection of an <code>AuthenticationProvider</code> capable of performing authentication is
     * conducted at runtime the <code>ProviderManager</code>.</p>
     */
    @Override
    public boolean supports(Class<?> authentication) {
        return crowdAuthenticationProvider.supports(authentication);
    }
}