de.thm.arsnova.CASLogoutSuccessHandler.java Source code

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Here is the source code for de.thm.arsnova.CASLogoutSuccessHandler.java

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/*
 * This file is part of ARSnova Backend.
 * Copyright (C) 2012-2015 The ARSnova Team
 *
 * ARSnova Backend is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * ARSnova Backend 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package de.thm.arsnova;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.core.Authentication;
import org.springframework.security.web.DefaultRedirectStrategy;
import org.springframework.security.web.RedirectStrategy;
import org.springframework.security.web.authentication.logout.LogoutSuccessHandler;

public class CASLogoutSuccessHandler implements LogoutSuccessHandler {

    public static final Logger LOGGER = LoggerFactory.getLogger(CASLogoutSuccessHandler.class);

    private String casUrl;
    private String defaultTarget;

    private final RedirectStrategy redirectStrategy = new DefaultRedirectStrategy();

    @Override
    public void onLogoutSuccess(final HttpServletRequest request, final HttpServletResponse response,
            final Authentication authentication) throws IOException, ServletException {
        String referer = request.getHeader("referer");
        if (response.isCommitted()) {
            LOGGER.info("Response has already been committed. Unable to redirect to target");
            return;
        }
        redirectStrategy.sendRedirect(request, response,
                (casUrl + "/logout?url=") + (referer != null ? referer : defaultTarget));
    }

    public void setCasUrl(final String newCasUrl) {
        casUrl = newCasUrl;
    }

    public void setDefaultTarget(final String newDefaultTarget) {
        defaultTarget = newDefaultTarget;
    }
}