com.afousan.controller.CookieInterceptor.java Source code

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Here is the source code for com.afousan.controller.CookieInterceptor.java

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/*
 * Copyright 2011 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.afousan.controller;

import com.afousan.model.RetwisSecurity;
import com.afousan.service.RetwisRepository;
import javax.inject.Inject;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.util.ObjectUtils;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

/**
 * Basic interceptor that checks that each request has been authenticated against Redis.
 * 
 * @author Costin Leau
 */
public class CookieInterceptor extends HandlerInterceptorAdapter {

    public static final String RETWIS_COOKIE = "retwisauth";

    @Inject
    private RetwisRepository twitter;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws Exception {
        // all non-root requests get analyzed
        Cookie[] cookies = request.getCookies();

        if (!ObjectUtils.isEmpty(cookies)) {
            for (Cookie cookie : cookies) {
                if (RETWIS_COOKIE.equals(cookie.getName())) {
                    String auth = cookie.getValue();
                    String name = twitter.findNameForAuth(auth);
                    if (name != null) {
                        String uid = twitter.findUid(name);
                        RetwisSecurity.setUser(name, uid);
                    }
                }
            }
        }
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler,
            Exception ex) throws Exception {
        RetwisSecurity.clean();
    }
}