My Free MP3+

解锁MyFreeMP3的QQ音乐、酷狗音乐、酷我音乐，过广告拦截器检测
目前为 2022-12-02 提交的版本。查看最新版本。
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// ==UserScript==
// @name         My Free MP3+
// @namespace    http://tampermonkey.net/My Free MP3 Plus
// @version      0.2.4
// @description  解锁MyFreeMP3的QQ音乐、酷狗音乐、酷我音乐，过广告拦截器检测
// @author       PY-DNG
// @match        http*://tool.liumingye.cn/music_old/*
// @match        http*://tools.liumingye.cn/music_old/*
// @connect      59.110.45.28
// @connect      kugou.com
// @connect      *
// @grant        GM_xmlhttpRequest
// @run-at       document-start
// ==/UserScript==
 
(function() {
    'use strict';
 
    window.addEventListener('load', main_onload);
	main();
 
	function main() {
		// 过网页自带的广告拦截器检测
		bypassAdkillerDetector();
	}
 
	function main_onload() {
		// 解锁QQ音乐、酷狗音乐、酷我音乐
		unlockTencent();
 
		// 下载全部采用页面内下载
		downloadInPage();
	}
 
    // 解锁QQ音乐、酷狗音乐、酷我音乐函数
    function unlockTencent() {
        // 模拟双击
        const search_title = $('#search .home-title');
        const eDblclick = new Event('dblclick');
        search_title.dispatchEvent(eDblclick);
        // 去除双击事件
        const p = search_title.parentElement;
        const new_search_title = $CrE('div');
        new_search_title.className = search_title.className;
        new_search_title.innerHTML = search_title.innerHTML;
        p.removeChild(search_title);
        p.insertBefore(new_search_title, p.children[0]);
    }
 
	// Hook掉下载按钮实现全部下载均采用页面内下载方式（重写下载逻辑）
	function downloadInPage() {
		document.body.addEventListener('click', onclick, {capture: true});
 
		function onclick(e) {
			const elm = e.target;
			const parent = elm ? elm.parentElement : null;
			match(elm);
			match(parent);
 
			function match(elm) {
				const tag = elm.tagName.toUpperCase();
				const clList = [...elm.classList];
				if (tag === 'A' && clList.includes('download') || clList.includes('pic_download')) {
					e.stopPropagation();
					e.preventDefault();;
					download(elm);
				}
			}
		}
 
		function download(a) {
			const elm_data = a.parentElement.previousElementSibling;
			const url = elm_data.value;
			const name = $("#name").value;
			const pop_id = pop.download(name, 'download');
			GM_xmlhttpRequest({
				method: 'GET',
				url: url,
				responseType: 'blob',
				onprogress: function(e) {
					e.lengthComputable /*&& c*/ && (pop.size(pop_id, bytesToSize(e.loaded) + " / " + bytesToSize(e.total)),
												pop.percent(pop_id, 100 * (e.loaded / e.total) >> 0))
				},
				onerror: function(e) {
					console.log(e);
					window.open(url);
				},
				onload: function(response) {
					const blob = response.response;
					const dataUrl = URL.createObjectURL(blob);
					const ext = getExtname(elm_data.id, blob.type.split(';')[0]);
					saveFile(dataUrl, `${name}.${ext}`);
					setTimeout(URL.revokeObjectURL.bind(URL, dataUrl), 1000);
					pop.finished(pop_id);
					setTimeout(pop.close.bind(pop, pop_id), 2000);
				}
			});
 
			function getExtname(...args) {
				const map = {
					url_dsd: "flac",
					url_flac: "flac",
					url_ape: "ape",
					url_320: "mp3",
					url_128: "mp3",
					url_m4a: "m4a",
					url_lrc: "lrc",
					'image/png': 'png',
					'image/jpg': 'jpg',
					'image/gif': 'gif',
					'image/bmp': 'bmp',
					'image/jpeg': 'jpeg',
					'image/webp': 'webp',
					'image/tiff': 'tiff',
					'image/vnd.microsoft.icon': 'ico',
				};
				return map[args.find(a => map[a])];
			}
 
			function bytesToSize(a) {
				if (0 === a)
					return "0 B";
				var b = 1024
				, c = ["B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"]
				, d = Math.floor(Math.log(a) / Math.log(b));
				return (a / Math.pow(b, d)).toFixed(2) + " " + c[d]
			}
		}
	}
 
	// 过广告拦截器检测
	function bypassAdkillerDetector() {
		/*
		// 拦截广告拦截检测器的setTimeout延迟启动器
		// 优点：不用考虑#music_tool是否存在，不用反复执行；缺点：需要在setTimeout启动器注册(不可用)前执行，如果脚本加载缓慢，就来不及了
		const setTimeout = unsafeWindow.setTimeout;
		unsafeWindow.setTimeout = function(func, time) {
			if (func && func.toString().includes('$("#music_tool").html()')) {
				func = function() {};
			}
			setTimeout.call(this, func, time);
		}
		*/
		/*
		// 拦截广告拦截检测器的innerHTML检测
		// 优点：对浏览器API没有影响，对DOM影响极小，在检测前执行即可；缺点：需要#music_tool存在，需要反复检测执行，影响性能，稳定性差
		const bypasser = () => {
			const elm = $('#music_tool');
			elm && Object.defineProperty($('#music_tool'), 'innerHTML', {get: () => '<iframe></iframe>'});
		};
		setTimeout(bypasser, 2000);
		bypasser();
		*/
		// 在页面添加干扰元素
		// 优点：对浏览器API没有影响，对DOM几乎没有影响，在检测前执行即可，不用考虑#music_tool是否存在，不用反复执行；缺点：可能影响广告功能（乐
		document.body.firstChild.insertAdjacentHTML('beforebegin', '<ins id="music_tool" style="display: none !important;">sometext</ins>');
	}
 
	// Basic functions
	// querySelector
	function $() {
		switch(arguments.length) {
			case 2:
				return arguments[0].querySelector(arguments[1]);
				break;
			default:
				return document.querySelector(arguments[0]);
		}
	}
	// querySelectorAll
	function $All() {
		switch(arguments.length) {
			case 2:
				return arguments[0].querySelectorAll(arguments[1]);
				break;
			default:
				return document.querySelectorAll(arguments[0]);
		}
	}
	// createElement
	function $CrE() {
		switch(arguments.length) {
			case 2:
				return arguments[0].createElement(arguments[1]);
				break;
			default:
				return document.createElement(arguments[0]);
		}
	}
	// addEventListener
	function $AEL(...args) {
		const target = args.shift();
		target.addEventListener.apply(args);
	}
 
	// Save dataURL to file
	function saveFile(dataURL, filename) {
		const a = $CrE('a');
		a.href = dataURL;
		a.download = filename;
		a.click();
	}
})();
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