com.app.controller.interceptor.AuthenticationInterceptor.java Source code

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Here is the source code for com.app.controller.interceptor.AuthenticationInterceptor.java

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/**
 * Copyright (c) 2014-present Jonathan McCann
 *
 * 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 3 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.
 */

package com.app.controller.interceptor;

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

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.subject.Subject;

import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerMapping;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
import org.springframework.web.util.WebUtils;

/**
 * @author Jonathan McCann
 */
@Component
public class AuthenticationInterceptor extends HandlerInterceptorAdapter {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws Exception {

        Subject currentUser = SecurityUtils.getSubject();

        if (!currentUser.isAuthenticated()) {
            String originalUrl = (String) request
                    .getAttribute(HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);

            WebUtils.setSessionAttribute(request, "redirect", originalUrl);

            response.sendRedirect("log_in");

            return false;
        }

        return true;
    }

}