net.duckling.ddl.web.interceptor.access.PanFetchCodeInterceptor.java Source code

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Here is the source code for net.duckling.ddl.web.interceptor.access.PanFetchCodeInterceptor.java

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/*
 * Copyright (c) 2008-2016 Computer Network Information Center (CNIC), Chinese Academy of Sciences.
 * 
 * This file is part of Duckling project.
 *
 * 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 net.duckling.ddl.web.interceptor.access;

import java.io.IOException;
import java.util.Set;

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

import net.duckling.ddl.service.share.PanShareResource;
import net.duckling.ddl.service.share.PanShareResourceService;
import net.duckling.ddl.util.ShareRidCodeUtil;
import net.duckling.meepo.api.IPanService;

import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

import com.meepotech.sdk.PanShareInfo;

public class PanFetchCodeInterceptor extends HandlerInterceptorAdapter {
    @Autowired
    private PanShareResourceService panShareResourceService;
    @Autowired
    private IPanService panService;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws Exception {
        if (isNotFilter(request)) {
            return true;
        }
        int id = getShareId(request);
        PanShareResource pan = panShareResourceService.get(id);
        if (pan == null || pan.isDelete()) {
            sendToDoEerror(request, response, "shareNull");
            return false;
        }
        try {
            PanShareInfo meta = panService.getShareMeta(pan.getPanShareId());
            if (meta == null) {
                sendToDoEerror(request, response, "resourceDelete");
                return false;
            }
        } catch (Exception e) {
            sendToDoEerror(request, response, "resourceDelete");
            return false;
        }
        if (StringUtils.isEmpty(pan.getPassword())) {
            return true;
        }

        Set<Integer> codes = (Set<Integer>) request.getSession().getAttribute("pan_share_id");
        if (codes != null && codes.contains(id)) {
            return true;
        }
        sendToDoEerror(request, response, "noAuth");
        return false;
    }

    private int getShareId(HttpServletRequest request) {
        String requestURI = request.getRequestURI();
        int index = requestURI.lastIndexOf("/");
        String ridS = requestURI.substring(index + 1);
        return ShareRidCodeUtil.decode(ridS);
    }

    private boolean isNotFilter(HttpServletRequest request) {
        String func = request.getParameter("func");
        if (StringUtils.isNotEmpty(func)) {
            return "checkcode".equals(func) || "doError".equals(func);

        }
        return false;
    }

    private void sendToDoEerror(HttpServletRequest request, HttpServletResponse response, String errorCode)
            throws ServletException, IOException {
        String requestURI = request.getRequestURI();
        String content = request.getContextPath();
        if (StringUtils.isNotEmpty(content)) {
            requestURI = requestURI.substring(content.length());
        }
        request.getRequestDispatcher(requestURI + "?func=doError&error=" + errorCode).forward(request, response);
    }
}