国家开放大学学习网允许不能下载的资源在预览资源时下载
// ==UserScript==
// @name 国开学习网资源下载
// @namespace https://greasyfork.org/zh-CN/users/707063-genexy
// @version 202406241743
// @description 国家开放大学学习网允许不能下载的资源在预览资源时下载
// @author 流浪的蛊惑
// @match *://lms.ouchn.cn/*
// @license MIT
// ==/UserScript==
let ginfo = document.getElementsByClassName("course-activity-tabs row"), token = "", pkjs = 0;
function addXMLRequestCallback(callback) {//监听请求
let oldSend, i;
if (XMLHttpRequest.callbacks) {
XMLHttpRequest.callbacks.push(callback);
} else {
XMLHttpRequest.callbacks = [callback];
oldSend = XMLHttpRequest.prototype.send;
XMLHttpRequest.prototype.send = function () {//监听发送
for (i = 0; i < XMLHttpRequest.callbacks.length; i++) {
XMLHttpRequest.callbacks[i](this);
}
this.gargs = arguments[0];
oldSend.apply(this, arguments);
}
XMLHttpRequest.prototype.wrappedSetRequestHeader = XMLHttpRequest.prototype.setRequestHeader;
XMLHttpRequest.prototype.setRequestHeader = function (header, value) {//监听自定义主机头
this.wrappedSetRequestHeader(header, value);
if (!this.headers) {
this.headers = {};
}
if (!this.headers[header]) {
this.headers[header] = [];
}
this.headers[header].push(value);
}
}
}
(function () {
'use strict';
let gurl="",grd=false;
let gt = document.getElementsByClassName("toolbar-buttons pdf-view");
setInterval(function () {
if(gt.length>0){
grd=false;
gt[0].innerHTML="<a href='"+gurl+"' target='_blank'><span style='color:white;'>下载</span></a>";
}
}, 1000);
addXMLRequestCallback(function (xhr) {
xhr.addEventListener("load", function () {
if (xhr.readyState == 4 && xhr.status == 200) {
if (xhr.responseURL.includes("/url?preview=true")) {
let p = JSON.parse(xhr.responseText);
gurl=p.url;
grd=true;
}
}
});
});
})();