open-JSD-6952/src/main/java/com/fr/plugin/mqh/dingtalksyn/request/GlobalRequestFilterBridge.java

 /*
  * Copyright (C), 2018-2021
  * Project: starter
  * FileName: GlobalRequestFilterBridge
  * Author:   Louis
  * Date:     2021/3/30 22:09
  */
 package com.fr.plugin.mqh.dingtalksyn.request;

 import com.fanruan.api.decision.login.LoginKit;
import com.fanruan.api.log.LogKit;
import com.fanruan.api.net.NetworkKit;
import com.fanruan.api.net.http.HttpKit;
import com.fanruan.api.util.IOKit;
import com.fanruan.api.util.StringKit;
import com.fr.base.TemplateUtils;
import com.fr.decision.fun.impl.AbstractGlobalRequestFilterProvider;
import com.fr.decision.webservice.utils.DecisionServiceConstants;
import com.fr.json.JSONObject;
import com.fr.plugin.mqh.dingtalksyn.config.DingSynConfig;
import com.fr.web.utils.WebUtils;

import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.HashMap;
import java.util.Map;

import static com.fr.plugin.mqh.dingtalksyn.utils.DingAPI.GETTOKEN;
import static com.fr.plugin.mqh.dingtalksyn.utils.DingAPI.GET_USER_INFO;

 /**
  * <Function Description><br>
  * <GlobalRequestFilterBridge>
  *
  * @author Louis
  * @since 1.0.0
  */
 public class GlobalRequestFilterBridge extends AbstractGlobalRequestFilterProvider {
     public static final String TPL_PATH = "/com/fr/plugin/mqh/dingtalksyn/web/codePage.html";
     public static final String DINGTALK_OPEN_JS = "/com/fr/plugin/mqh/dingtalksyn/web/dingtalk.open.js";
     public static final String CODE = "code";
     public static final String DING_TALK_LOGIN = "dt";

     private DingSynConfig config;

     /**
      * 过滤器名称
      *
      * @return
      */
     @Override
     public String filterName() {
         return "DingTalkSynFilter";
     }

     /**
      * 过滤规则
      *
      * @return
      */
     @Override
     public String[] urlPatterns() {
         return new String[]{"/decision/*"};
     }

     /**
      * 过滤器初始化
      *
      * @param filterConfig
      */
     @Override
     public void init(FilterConfig filterConfig) {
         this.config = DingSynConfig.getInstance();
         super.init(filterConfig);
     }

     /**
      * 过滤器处理
      *
      * @param request
      * @param response
      * @param filterChain
      */
     @Override
     public void doFilter(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) {
         try {
             if (operation(request, response)) {
                 filterChain.doFilter(request, response);
             }
         } catch (Exception e) {
             LogKit.error(e.getMessage(), e);
         }
     }

     /**
      * 用户验证登陆操作
      *
      * @param req
      * @param res
      * @throws Exception
      */
     private boolean operation(HttpServletRequest req, HttpServletResponse res) throws Exception {
         String pathInfo = (req.getPathInfo() != null) ? req.getPathInfo() : StringKit.EMPTY;
         if (StringKit.equals(DINGTALK_OPEN_JS, pathInfo)) {
             WebUtils.printAsString(res, IOKit.readResourceAsString(DINGTALK_OPEN_JS));
             return false;
         }
         //DingTalk登陆参数
         String dt = NetworkKit.getHTTPRequestParameter(req, DING_TALK_LOGIN);
         if (StringKit.isBlank(dt)) {
             return true;
         }
         String code = NetworkKit.getHTTPRequestParameter(req, CODE);
         LogKit.info("dingtalksyn-GlobalRequestFilterBridge-operation-code:{}", code);
         if (StringKit.isEmpty(code)) {
             loginPage(req, res);
             return false;
         }
         String accessToken = getAccessToken(code);
         String username = getUsername(code, accessToken);
         LogKit.info("dingtalksyn-GlobalRequestFilterBridge-operation-username:{}", username);
         if (StringKit.isEmpty(username)) {
             return true;
         }
         String tokenFR = LoginKit.login(req, res, username);
         req.setAttribute(DecisionServiceConstants.FINE_AUTH_TOKEN_NAME, tokenFR);
         return true;
     }

     /**
      * 钉钉获取code页面
      *
      * @param req
      * @param res
      * @return
      * @throws Exception
      */
     private void loginPage(HttpServletRequest req, HttpServletResponse res) throws Exception {
         Map<String, String> parameterMap = new HashMap<>();
         parameterMap.put("corpId", this.config.getCorpId());
         parameterMap.put("openJs", WebUtils.createServletURL(req) + DINGTALK_OPEN_JS);
         parameterMap.put("remoteServletURL", getRemoteServletURL(WebUtils.getOriginalURL(req)));
         String codePage = TemplateUtils.renderTemplate(TPL_PATH, parameterMap);
         WebUtils.printAsString(res, codePage);
     }

     /**
      * 处理请求url加入code参数
      *
      * @param url
      * @return
      */
     private String getRemoteServletURL(String url) {
         if (url.contains("?")) {
             return url + "&" + CODE + "=";
         }
         return url + "?" + CODE + "=";
     }

     /**
      * 获取access_token
      *
      * @param code
      * @return
      * @throws Exception
      */
     private String getAccessToken(String code) throws Exception {
         Map<String, String> tokenParams = new HashMap<>();
         tokenParams.put("appkey", this.config.getAppKey());
         tokenParams.put("appsecret", this.config.getAppSecret());
         tokenParams.put("code", code);
         LogKit.info("dingtalksyn-GlobalRequestFilterBridge-getAccessToken-params:{}", tokenParams);
         String res = HttpKit.get(GETTOKEN, tokenParams);
         LogKit.info("dingtalksyn-GlobalRequestFilterBridge-getAccessToken-res:{}", res);
         if (StringKit.isEmpty(res)) {
             return StringKit.EMPTY;
         }
         return new JSONObject(res).getString("access_token");
     }

     /**
      * 通过凭证获得username
      *
      * @param code
      * @param accessToken
      * @return
      */
     private String getUsername(String code, String accessToken) throws Exception {
         Map<String, String> userInfoParams = new HashMap<>();
         userInfoParams.put("access_token", accessToken);
         userInfoParams.put("code", code);
         String userRes = HttpKit.get(GET_USER_INFO, userInfoParams);
         LogKit.info("dingtalksyn-GlobalRequestFilterBridge-getUsername-userRes:{}", userRes);
         return new JSONObject(userRes).getString("userid");
     }
 }