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超星学习通资源嗅探

嗅探超星学习通学习页面的视频、课件等资源

  1. // ==UserScript==
  2. // @name         超星学习通资源嗅探
  3. // @namespace    http://tampermonkey.net/
  4. // @version      0.1.10
  5. // @description  嗅探超星学习通学习页面的视频、课件等资源
  6. // @author       Jamaskii
  7. // @match        https://mooc1.chaoxing.com/mycourse/studentstudy?chapterId=*&courseId=*
  8. // @icon         http://file.market.xiaomi.com/thumbnail/PNG/l62/AppStore/0df974411e86ac90526a328899c555f5ada40cb17
  9. // ==/UserScript==
  10.  
  11. (function() {
  12.     'use strict';
  13.  
  14.     //官方暴露的资源下载接口，需要传入资源id
  15.     var api='https://cs-ans.chaoxing.com/download/';
  16.  
  17.     //用于显示资源的列表元素
  18.     var list=document.createElement('table');
  19.  
  20.     var doScan=function(){
  21.         //清空列表
  22.         list.innerHTML='';
  23.  
  24.         //定位每一个资源所在iframe
  25.         var ifs=document.getElementById('iframe').contentWindow.document.getElementsByTagName('iframe');
  26.  
  27.         //获取资源信息，并渲染列表
  28.         for(var i=0;i<ifs.length;i++){
  29.             //unicode转中文，并去转义
  30.             var reg = /\\/g;
  31.             var text=unUnicode(ifs[i].getAttribute('data')).replace(reg,'');
  32.  
  33.             //解析json
  34.             var obj=JSON.parse(text);
  35.  
  36.             //通过资源id生成当前资源的下载链接
  37.             var url=api+obj.objectid;
  38.  
  39.             //渲染列表
  40.             var line=document.createElement('tr');
  41.             var type=document.createElement('td');
  42.             var name=document.createElement('td');
  43.             var namea=document.createElement('a');
  44.             var size=document.createElement('td');
  45.  
  46.             type.innerText=obj.type.replace('.','');
  47.             namea.innerText=obj.name;
  48.             namea.href=url;
  49.             size.innerText=obj.hsize;
  50.  
  51.             type.style='padding:2px; border: 1px solid black;';
  52.             name.style='padding:2px; border: 1px solid black; color:blue; cursor:pointer ';
  53.             namea.style='color:blue; cursor:pointer ';
  54.             size.style='padding:2px; border: 1px solid black;';
  55.  
  56.             line.appendChild(type);
  57.             name.appendChild(namea);
  58.             line.appendChild(name);
  59.             line.appendChild(size);
  60.  
  61.             list.appendChild(line);
  62.         }
  63.     };
  64.  
  65.     //unicode转中文
  66.     function unUnicode(str){
  67.         str = str.replace(/(\\u)(\w{1,4})/gi,function($0){
  68.             return (String.fromCharCode(parseInt((escape($0).replace(/(%5Cu)(\w{1,4})/g,"$2")),16)));
  69.         });
  70.         str = str.replace(/(&#x)(\w{1,4});/gi,function($0){
  71.             return String.fromCharCode(parseInt(escape($0).replace(/(%26%23x)(\w{1,4})(%3B)/g,"$2"),16));
  72.         });
  73.         str = str.replace(/(&#)(\d{1,6});/gi,function($0){
  74.             return String.fromCharCode(parseInt(escape($0).replace(/(%26%23)(\d{1,6})(%3B)/g,"$2")));
  75.         });
  76.  
  77.         return str;
  78.     }
  79.  
  80.     //首次加载渲染
  81.     window.onload=function render(){
  82.         var container=document.createElement('div');
  83.         var btnScan=document.createElement('button');
  84.         var boxCtrl=document.createElement('div');
  85.         var btnHide=document.createElement('button');
  86.         var mainBlock=document.getElementById('mainid');
  87.  
  88.         btnScan.style='width: 60px;';
  89.         btnScan.innerText='嗅探';
  90.         btnScan.onclick=doScan;
  91.  
  92.         btnHide.style='width: 60px;';
  93.         btnHide.innerText='收起';
  94.         btnHide.onclick=function(){list.innerHTML='';};
  95.  
  96.         container.style='font-size:14px; display:flex; flex-direction:column; align-items:center;';
  97.  
  98.         boxCtrl.appendChild(btnScan);
  99.         boxCtrl.appendChild(btnHide);
  100.         container.appendChild(boxCtrl);
  101.         container.appendChild(list);
  102.         mainBlock.parentElement.insertBefore(container,mainBlock);
  103.  
  104.         doScan();
  105.     }
  106. })();