// ==UserScript==// @name              ##大学 MOOC 下载助手（需配合Aria2使用）// @name:en           Icourse163 Downloader// @namespace         http://mofiter.com/// @version           0.3// @description       在##大学 MOOC 的课程学习页面添加批量下载按钮，方便将视频下载到本地学习// @description:en    add download button on icourse163.org to download videos// @author            mofiter// @require           https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js// @match             *://www.icourse163.org/learn/*// @grant             unsafeWindow// @grant             GM_getValue// @grant             GM_setValue// @grant             GM_xmlhttpRequest// @grant             GM_openInTab// ==/UserScript==(function() {'use strict';var $ = $ || window.$;var log_count = 1;var hasOpenAriac2Tab = false;var video_quality = 2; //视频清晰度var video_format = 'mp4'; //视频格式var aria2_url = "http://127.0.0.1:6800/jsonrpc"; //Aria2 地址var course_save_path = '/Users/mofiter/Downloads/icourse163'; //课程保存路径var video_save_path; //每个视频保存路径var video_download_url = ""; //视频下载地址var course_info = {'course_id': {},'course_name': {},'chapter_info': []}; //课程信息var cookies = document.cookie;var sessionId = cookies.match(/NTESSTUDYSI=(\w+)/)[1];//自定义 log 函数function mylog(param1,param2){param1 = param1 ? param1 : "";param2 = param2 ? param2 : "";console.log("#" + log_count++ + "-Icourse163Downloader-log:",param1,param2);}setTimeout(function(){getCourseIdAndName();getCourseContentInfo();loadSetting();addDownloadAssistant();mylog("##大学 MOOC 下载助手加载完成~");},2000); //页面加载完成后延时2秒执行//获取课程名称function getCourseIdAndName(){var courseCardDto = unsafeWindow.courseCardDto;course_info.course_name = courseCardDto.name.replace(/\/|:|\?|\*|"|<|>|\|/g," ");if(location.href.match(/tid=(\d+)/)[1]){course_info.course_id = location.href.match(/tid=(\d+)/)[1];}else{course_info.course_id = courseCardDto.currentTermId;}}//添加批量下载和下载设置按钮function addDownloadAssistant(){var batch_download_li = $("<li class='u-greentab'></li>");var batch_download = $("<a>批量下载</a>");batch_download_li.append(batch_download);var assistant_setting_li = $("<li class='u-greentab'></li>");var assistant_setting = $("<a>下载设置</a>");assistant_setting_li.append(assistant_setting);$('#j-courseTabList').append(batch_download_li).append(assistant_setting_li);batch_download_li.click(function(){loadSetting();if(course_save_path==""){alert("请点击下载设置去填写文件保存位置");}else if(aria2_url==""){alert("请点击下载设置去填写 Aria2 地址");}else{batchDownload();}});assistant_setting_li.click(function(){showSetting();});}//加载个人设置function loadSetting(){video_quality = GM_getValue('video_quality', 2);video_format = GM_getValue('video_format','mp4');aria2_url = GM_getValue('aria2_url','http://127.0.0.1:6800/jsonrpc');course_save_path = GM_getValue('course_save_path','');}//打开设置function showSetting(){if(document.querySelector('#dl-setting') == null){var container = document.createElement("div");container.id = "dl-setting";container.style = "position:fixed;z-index:999999;bottom:10%;right:40px;width:220px;height:auto;background-color:#f8f8f8;padding:5px 10px;font-size:14px;border:1px solid #ccc;";container.innerHTML ="<div style='line-height:25px;'>" +"<legend style='text-align:center;font-size:16px;'>下载设置</legend>" +"<ul>" +"<li>Aria2 地址：</li>" +"<li><input type='text' id='aria2_url' name='aria2_url' value='" + aria2_url + "' style='width:100%;background:#ffffff;'></input></li>" +"<li>文件保存位置：</li>\n" +"<li><input type='text' id='save_path' name='save_path' value='" + course_save_path + "' style='width:100%;background:#ffffff;'></input></li>" +"<li>清晰度：<label title='高清'><input id='video-quality-2' name='video-quality' value='2' type='radio' style='margin:0 5px;'" + (video_quality==2 ? "checked":"") + "></input>高清</label>\n" +"<label title='标清' style='padding:0 5px;'><input id='video-quality-1' name='video-quality' value='1' type='radio' style='margin:0 5px;'" + (video_quality==1 ? "checked":"") + "></input>标清</label></li>\n" +"<li>格式：<label title='mp4' style='padding:0 0 0 14px;'><input id='video-format-mp4' name='video-format' value='mp4' type='radio' style='margin:0 5px;'" + (video_format=='mp4' ? "checked":"") + "></input>mp4</label>" +"<label title='flv' style='padding:0 5px;'><input id='video-format-flv' name='video-format' value='flv' type='radio' style='margin:0 5px 0 10px;'" + (video_format=='flv' ? "checked":"") + "></input>flv</label></li>" +"</ul>\n" +"<input type='button' value='取消' id='cancel_button' style='position:relative;float:left;border:1px solid #ccc;padding:0 2px;background:#ffffff;'></input>\n" +"<input type='button' value='保存' id='save_button' style='position:relative;float:right;border:1px solid #ccc;padding:0 2px;background:#ffffff;'></input>\n" +"</div>";document.body.appendChild(container);}else{loadSetting();if(video_quality==2){$('#video-quality-2').prop('checked',true);}else{$('#video-quality-1').prop('checked',true);}if(video_format=='mp4'){$('#video-format-mp4').prop('checked',true);}else{$('#video-format-flv').prop('checked',true);}$('#aria2_url').value = aria2_url;$('#save_path').value = course_save_path;$('#dl-setting').show();}$('#save_button').click(function(){GM_setValue('video_quality',$('input[name="video-quality"]:checked').val());GM_setValue('video_format',$('input[name="video-format"]:checked').val());GM_setValue('aria2_url',$('input[name="aria2_url"]').val());GM_setValue('course_save_path',$('input[name="save_path"]').val());$('#dl-setting').hide();});$('#cancel_button').click(function(){$('#dl-setting').hide();});}//获取课程信息function getCourseContentInfo(){var timestamp = new Date().getTime();var params = {"callCount":"1","scriptSessionId":"${scriptSessionId}190","httpSessionId":sessionId,"c0-scriptName":"CourseBean","c0-methodName":"getLastLearnedMocTermDto","c0-id":"0","c0-param0":"number:" + course_info.course_id,"batchId":timestamp};$.ajax({url:'https://www.icourse163.org/dwr/call/plaincall/CourseBean.getLastLearnedMocTermDto.dwr',method:'POST',async: true,data: params,success: function (response){var chapter1 = response.match(/chapters=(.*?);/)[1]; //保存全部章节的变量var reg1 = new RegExp(chapter1 + '\\[\\d+]=(.*?);','g');var chapter2 = response.match(reg1); //保存各章节的变量chapter2.forEach(function(value){var chapter3 = value.match(/=(.*?);/)[1]; //保存各章节的变量名字var reg2 = new RegExp(chapter3 + '.id=(.*?);' + chapter3 + '.lessons=(.*?);' + chapter3 + '.name="(.*?)";');var chapter4 = response.match(reg2); //保存章节 id，lessons，name 的变量var reg3 = new RegExp(chapter4[2] + '\\[\\d+]=(.*?);','g');var lessons = response.match(reg3); //保存各小节的变量var chapter = {'chapter_id':chapter4[1],'chapter_name':unescape(chapter4[3].replace(/\\u/gi, '%u').replace(/\/|:|\?|\*|"|<|>|\|/g," ")),'lesson_info':[]};lessons.forEach(function(value){var lesson1 = value.match(/=(.*?);/)[1]; //保存各小节的变量名字var reg4 = new RegExp(lesson1 + '.chapterId=(.*?);.*?' + lesson1 + '.id=(.*?);.*?' + lesson1 + '.name="(.*?)";.*?' + lesson1 + '.units=(.*?);');var lesson2 = response.match(reg4);var reg5 = new RegExp(lesson2[4] + '\\[\\d+]=(.*?);','g');var sections = response.match(reg5);var lesson = {'chapter_id':lesson2[1],'lesson_id':lesson2[2],'lesson_name':unescape(lesson2[3].replace(/\\u/gi, '%u').replace(/\/|:|\?|\*|"|<|>|\|/g," ")),'section_info':[]};sections.forEach(function(value){var section1 = value.match(/=(.*?);/)[1];var reg6 = new RegExp(section1 + '.chapterId=(.*?);.*?' + section1 + '.contentId=(.*?);.*?' + section1 + '.contentType=(.*?);.*?' + section1 + '.id=(.*?);.*?' + section1 + '.lessonId=(.*?);.*?' + section1 + '.name="(.*?)";.*?');var section2 = response.match(reg6);var section = {'chapter_id':section2[1],'lesson_id':section2[5],'content_id':section2[2],'section_id':section2[4],'section_name':unescape(section2[6].replace(/\\u/gi, '%u').replace(/\/|:|\?|\*|"|<|>|\|/g," ")),'content_type':section2[3]};lesson.section_info.push(section);});chapter.lesson_info.push(lesson);});course_info.chapter_info.push(chapter);});mylog(course_info);}});}//批量下载function batchDownload(){course_info.chapter_info.forEach(function(chapter,index_chapter){chapter.lesson_info.forEach(function(lesson,index_lesson){lesson.section_info.forEach(function(section,index_section){var file_name = '第' + (index_section + 1) + '部分_' + section.section_name;var save_path = course_save_path.replace(/\\/g,'\/') + '/' + course_info.course_name + '/第' + (index_chapter + 1) + '章_' + chapter.chapter_name + '/第' + (index_lesson + 1) + '节_' + lesson.lesson_name;if(section.content_type == '1'){getVideoToken(section.content_id,file_name,save_path);} else if(section.content_type == '3'){getCourseContentUrl(section.content_id,section.section_id,file_name,save_path);}});});});}//获取文档下载地址function getCourseContentUrl(content_id,section_id,file_name,save_path){var timestamp = new Date().getTime();var params = {"callCount":"1","scriptSessionId":"${scriptSessionId}190","httpSessionId":sessionId,"c0-scriptName":"CourseBean","c0-methodName":"getLessonUnitLearnVo","c0-id":"0","c0-param0":"number:" + content_id,"c0-param1":"number:3","c0-param2":"number:0","c0-param3":"number:" + section_id,"batchId":timestamp};$.ajax({url:'https://www.icourse163.org/dwr/call/plaincall/CourseBean.getLessonUnitLearnVo.dwr',method:'POST',async: true,data: params,success: function (response){var pdfUrl = response.match(/textOrigUrl:"(.*?)",/)[1];//mylog(pdfUrl);sendDownloadTaskToAria2(pdfUrl,file_name + ".pdf",save_path);}});}//获取视频信息function getVideoToken(content_id,file_name,save_path){var params = {'videoId':content_id,'targetId':course_info.course_id,'targetType':'0'};$.ajax({url:'https://www.icourse163.org/web/j/resourceRpcBean.getVideoToken.rpc?csrfKey=' + sessionId,method:'POST',async: true,data: params,success: function (response){var signature = response.r###lt.signature;getVideoUrl(content_id,signature,file_name,save_path);}});}//获取视频下载地址function getVideoUrl(content_id,signature,file_name,save_path){var params = {'videoId':content_id,'signature':signature,'clientType':'1'};$.ajax({url:'https://vod.study.163.com/eds/api/v1/vod/video',method:'POST',async: true,data: params,success: function (response){var videoUrls = response.r###lt.videos;var video_url_list = [];videoUrls.forEach(function(video){if(video.format == video_format) {video_url_list.push({'video_format': video.format,'video_quality': video.quality,'video_url': video.videoUrl});}});if(video_url_list.length != 0){if(video_quality=="2"){video_download_url = video_url_list[video_url_list.length-1].video_url;}else{video_download_url = video_url_list[0].video_url;}}if(video_download_url != ""){//mylog(video_download_url);sendDownloadTaskToAria2(video_download_url,file_name + '.' + video_format,save_path);}}});}// 将下载链接发送到 Aria2 下载function sendDownloadTaskToAria2(download_url,file_name,save_path){var json_rpc = {id:'',jsonrpc:'2.0',method:'aria2.addUri',params:[[download_url],{dir:save_path,out:file_name}]};GM_xmlhttpRequest({url:aria2_url,method:'POST',data:JSON.stringify(json_rpc),onerror:function(response){mylog(response);},onload:function(response){mylog(response);if (!hasOpenAriac2Tab){GM_openInTab('http://aria2c.com/',{active:true});hasOpenAriac2Tab = true;}}});}})();