m3u8視頻偵測下載器【自動嗅探】

自動檢測頁面m3u8視頻並進行完整下載。檢測到m3u8鏈接後會自動出現在頁面右上角位置，點擊下載即可跳轉到m3u8下載器。
目前為 2022-08-18 提交的版本，檢視最新版本。
安裝腳本 ?
Wrap lines
// ==UserScript==
// @name         m3u8视频侦测下载器【自动嗅探】
// @name:zh-CN   m3u8视频侦测下载器【自动嗅探】
// @name:zh-TW   m3u8視頻偵測下載器【自動嗅探】
// @name:en      m3u8 video detector and downloader
// @version      1.1.0
// @description  自动检测页面m3u8视频并进行完整下载。检测到m3u8链接后会自动出现在页面右上角位置，点击下载即可跳转到m3u8下载器。
// @description:zh-CN  自动检测页面m3u8视频并进行完整下载。检测到m3u8链接后会自动出现在页面右上角位置，点击下载即可跳转到m3u8下载器。
// @description:zh-TW  自動檢測頁面m3u8視頻並進行完整下載。檢測到m3u8鏈接後會自動出現在頁面右上角位置，點擊下載即可跳轉到m3u8下載器。
// @description:en  Automatically detect the m3u8 video of the page and download it completely. After detecting the m3u8 link, it will automatically appear in the upper right corner of the page. Click download to jump to the m3u8 downloader.
// @icon         https://tools.thatwind.com/favicon.png
// @author       allFull
// @namespace    https://tools.thatwind.com/
// @homepage     https://tools.thatwind.com/tool/m3u8downloader
// @match        *://*/*
// @require      https://cdn.jsdelivr.net/npm/m3u8-parser@4.7.1/dist/m3u8-parser.min.js
// @connect      *
// @grant        unsafeWindow
// @grant        GM_openInTab
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM_addStyle
// @grant        GM_xmlhttpRequest
// @run-at       document-start
// ==/UserScript==
 
(function () {
    'use strict';
 
    if (location.host === "tools.thatwind.com" || location.host === "localhost:3000") {
        GM_addStyle("#userscript-tip{display:none !important;}");
 
        // 对请求做代理
        const _fetch = unsafeWindow.fetch;
        unsafeWindow.fetch = async function (...args) {
            try {
                let response = await _fetch(...args);
                if (response.status !== 200) throw new Error(response.status);
                return response;
            } catch (e) {
                // 失败请求使用代理
                if (args.length == 1) {
                    console.log(`请求代理：${args[0]}`);
                    return await new Promise((resolve, reject) => {
                        let referer = new URLSearchParams(location.hash.slice(1)).get("referer");
                        let headers = {};
                        if (referer) {
                            referer = new URL(referer);
                            headers = {
                                "origin": referer.origin,
                                "referer": referer.href
                            };
                        }
                        GM_xmlhttpRequest({
                            method: "GET",
                            url: args[0],
                            responseType: 'arraybuffer',
                            headers,
                            onload(r) {
                                resolve({
                                    status: r.status,
                                    headers: new Headers(r.responseHeaders.split("\n").filter(n => n).map(s => s.split(/:\s*/)).reduce((all, [a, b]) => { all[a] = b; return all; }, {})),
                                    async text() {
                                        return r.responseText;
                                    },
                                    async arrayBuffer() {
                                        return r.response;
                                    }
                                });
                            },
                            onerror() {
                                reject(new Error());
                            }
                        });
                    });
                } else {
                    throw e;
                }
            }
        }
 
        return;
    }
 
    {
        // 请求检测
        // const _fetch = unsafeWindow.fetch;
        // unsafeWindow.fetch = function (...args) {
        //     if (checkUrl(args[0])) showM3U({ url: args[0] });
        //     return _fetch(...args);
        // }
 
        const _r_text = unsafeWindow.Response.prototype.text;
        unsafeWindow.Response.prototype.text = function () {
            return new Promise((resolve, reject) => {
                _r_text.call(this).then((text) => {
                    resolve(text);
                    if (checkContent(text)) showM3U({ url: this.url, content: text });
                }).catch(reject);
            });
        }
 
        const _open = unsafeWindow.XMLHttpRequest.prototype.open;
        unsafeWindow.XMLHttpRequest.prototype.open = function (...args) {
            this.addEventListener("load", () => {
                try {
                    let content = this.responseText;
                    if (checkContent(content)) showM3U({ url: args[1], content });
                } catch { }
            });
            // checkUrl(args[1]);
            return _open.apply(this, args);
        }
 
 
        function checkUrl(url) {
            url = new URL(url, location.href);
            if (url.pathname.endsWith(".m3u8") || url.pathname.endsWith(".m3u")) {
                // 发现
                return true;
            }
        }
 
        function checkContent(content) {
            if (content.trim().startsWith("#EXTM3U")) {
                return true;
            }
        }
 
 
    }
 
    const rootDiv = document.createElement("div");
    rootDiv.style = `
        position: fixed;
        z-index: 9999999999999999;
        opacity: 0.9;
    `;
    rootDiv.style.display = "none";
    document.documentElement.appendChild(rootDiv);
 
    const shadowDOM = rootDiv.attachShadow({ mode: 'open' });
    const wrapper = document.createElement("div");
    shadowDOM.appendChild(wrapper);
 
 
    // 指示器
    const bar = document.createElement("div");
    bar.style = `
        text-align: right;
    `;
    bar.innerHTML = `
        <span
            class="number-indicator"
            data-number="0"
            style="
                display: inline-flex;
                width: 25px;
                height: 25px;
                background: black;
                padding: 10px;
                border-radius: 100px;
                margin-bottom: 5px;
                cursor: pointer;
            "
        >
            <svg
            style="
                filter: invert(1);
            "
            version="1.1" id="Capa_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 585.913 585.913" style="enable-background:new 0 0 585.913 585.913;" xml:space="preserve">
                <g>
                    <path d="M11.173,46.2v492.311l346.22,47.402V535.33c0.776,0.058,1.542,0.109,2.329,0.109h177.39
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                    L11.173,46.2z M110.382,345.888l-1.37-38.273c-0.416-11.998-0.822-26.514-0.822-41.023l-0.415,0.01
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                    c2.724,11.224,5.467,23.364,7.428,34.819h0.389c2.503-11.291,5.535-24.221,8.454-35.168l9.643-33.042l27.436-1.071l5.237,101.377
                    L110.382,345.888z M172.479,349.999c-12.569-0.504-23.013-4.272-28.539-8.142l4.504-17.249c3.939,2.226,13.1,6.445,22.373,6.687
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                    M359.723,70.476h177.39c8.893,0,16.125,7.236,16.125,16.126v411.22c0,8.888-7.232,16.127-16.125,16.127h-177.39
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                    l-93.397,59.628c-0.509,0.4-1.114,0.61-1.743,0.61l-1.233-0.289C391.488,366.588,390.873,365.585,390.873,364.519z" />
                </g>
            </svg>
        </span>
    `;
 
    wrapper.appendChild(bar);
 
    // 样式
    const style = document.createElement("style");
 
    style.innerHTML = `
        .number-indicator{
            position:relative;
        }
 
        .number-indicator::after{
            content: attr(data-number);
            position: absolute;
            bottom: 0;
            right: 0;
            color: #40a9ff;
            font-size: 14px;
            font-weight: bold;
            background: #000;
            border-radius: 10px;
            padding: 3px 5px;
        }
 
        .download-btn:hover{
            text-decoration: underline;
        }
        .download-btn:active{
            opacity: 0.9;
        }
 
        .m3u8-item{
            color: white;
            margin-bottom: 5px;
            display: flex;
            flex-direction: row;
            background: black;
            padding: 3px 10px;
            border-radius: 3px;
            font-size: 14px;
            user-select: none;
        }
 
        [data-shown="false"] {
            opacity: 0.8;
            zoom: 0.8;
        }
 
        [data-shown="false"]:hover{
            opacity: 1;
        }
 
        [data-shown="false"] .m3u8-item{
            display: none;
        }
 
    `;
 
    wrapper.appendChild(style);
 
 
 
 
    const barBtn = bar.querySelector(".number-indicator");
 
    // 关于显隐和移动
 
    let shown = GM_getValue("shown", true);
    wrapper.setAttribute("data-shown", shown);
 
 
    let x = GM_getValue("x", 10);
    let y = GM_getValue("y", 10);
 
    x = Math.min(innerWidth - 50, x);
    y = Math.min(innerHeight - 50, y);
 
    if (x < 0) x = 0;
    if (y < 0) y = 0;
 
    rootDiv.style.top = `${y}px`;
    rootDiv.style.right = `${x}px`;
 
    barBtn.addEventListener("mousedown", e => {
        let startX = e.pageX;
        let startY = e.pageY;
 
        let moved = false;
 
        let mousemove = e => {
            let offsetX = e.pageX - startX;
            let offsetY = e.pageY - startY;
            if (moved || (Math.abs(offsetX) + Math.abs(offsetY)) > 5) {
                moved = true;
                rootDiv.style.top = `${y + offsetY}px`;
                rootDiv.style.right = `${x - offsetX}px`;
            }
        };
        let mouseup = e => {
 
            let offsetX = e.pageX - startX;
            let offsetY = e.pageY - startY;
 
            if (moved) {
                x -= offsetX;
                y += offsetY;
                GM_setValue("x", x);
                GM_setValue("y", y);
            } else {
                shown = !shown;
                GM_setValue("shown", shown);
                wrapper.setAttribute("data-shown", shown);
            }
 
            removeEventListener("mousemove", mousemove);
            removeEventListener("mouseup", mouseup);
        }
        addEventListener("mousemove", mousemove);
        addEventListener("mouseup", mouseup);
    });
 
 
 
 
 
    let count = 0;
    let shownUrls = [];
 
    async function showM3U({ url, content }) {
 
        url = new URL(url);
 
        if(shownUrls.includes(url.href)) return;
 
        // 解析 m3u
        content = content || await (await fetch(url)).text();
 
        const parser = new m3u8Parser.Parser();
        parser.push(content);
        parser.end();
        const manifest = parser.manifest;
 
        if (manifest.segments) {
            let duration = 0;
            manifest.segments.forEach((segment) => {
                duration += segment.duration;
            });
            manifest.duration = duration;
        }
 
        let div = document.createElement("div");
        div.className = "m3u8-item";
        div.innerHTML = `
            <span
                title="${url}"
                style="
                    max-width: 200px;
                    text-overflow: ellipsis;
                    white-space: nowrap;
                    overflow: hidden;
                "
            >${url.pathname}</span>
            <span 
                style="
                    margin-left: 10px;
                    flex-grow: 1;
                "
            >${manifest.duration ? `${Math.ceil(manifest.duration * 10 / 60) / 10}分钟` : manifest.playlists ? `多线(${manifest.playlists.length})` : "未知时长"}</span>
            <span
                class="download-btn"
                style="
                    margin-left: 10px;
                    cursor: pointer;
            ">下载</span>
        `;
 
        div.querySelector(".download-btn").addEventListener("click", () => {
            GM_openInTab(
                `https://tools.thatwind.com/tool/m3u8downloader#${new URLSearchParams({
                    m3u8: url.href,
                    referer: location.href
                })
                }`,
                {
                    active: true
                }
            );
        });
 
        rootDiv.style.display = "block";
 
        count++;
 
        shownUrls.push(url.href);
 
        bar.querySelector(".number-indicator").setAttribute("data-number", count);
 
        wrapper.appendChild(div);
    }
 
})();
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