com.chessoft.filter.AuthenticationFilter.java Source code

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Here is the source code for com.chessoft.filter.AuthenticationFilter.java

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/*
 * Copyright (C) 2016 Sergey Chechenev <cssru@mail.ru>
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package com.chessoft.filter;

import java.io.IOException;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.lang3.StringUtils;

@WebFilter(filterName = "authenticationFilter", urlPatterns = { "*.xhtml" })
public class AuthenticationFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletRequest httpRequest = (HttpServletRequest) request;
        HttpServletResponse httpResponse = (HttpServletResponse) response;
        HttpSession session = httpRequest.getSession(false);
        String uri = httpRequest.getRequestURI();

        if (StringUtils.contains(uri, "/login.xhtml") || (session != null && session.getAttribute("login") != null)
                || StringUtils.contains(uri, "javax.faces.resource")
                || StringUtils.contains(uri, "org/apache/myfaces/tobago/renderkit")) {
            chain.doFilter(request, response);
        } else {
            httpResponse.sendRedirect(httpRequest.getContextPath() + "/login.xhtml");
        }
    }

    @Override
    public void destroy() {

    }
}