自用，拦截和过滤 m3u8（解析/采集资源） 的广告切片，同时打印被过滤的行信息。
目前為
// ==UserScript==
// @name M3U8 Filter Ad Script
// @namespace http://tampermonkey.net/
// @version 1.0.1
// @description 自用，拦截和过滤 m3u8（解析/采集资源） 的广告切片，同时打印被过滤的行信息。
// @author ltxlong
// @match *://*/*
// @grant unsafeWindow
// @run-at document-start
// @license MIT
// ==/UserScript==
(function() {
'use strict';
initHook();
function initHook() {
hookXHR();
}
let ts_name_len = 0; // ts前缀长度
let ts_name_len_extend = 1; // 容错
let prev_ts_name_index = -1; // ts序列号
let ts_type = 0; // 0-xxxx000数字递增.ts模式 ；1-xxxxxxxxxx.ts模式
function isM3U8File(url) {
return /\.m3u8($|\?)/.test(url);
}
async function safelyProcessM3U8(url, content) {
try {
const lines = content.split('\n');
const newLines = filterLines(lines);
return newLines.join('\n');
} catch (e) {
console.error(`处理 m3u8 文件时出错: ${url}`, e);
return content;
}
}
function extractNumberBeforeTS(str) {
// 匹配 .ts 前面的数字
const match = str.match(/(\d+)\.ts/);
if (match) {
// 使用 parseInt 去掉前导 0
return parseInt(match[1], 10);
}
return null; // 如果不匹配，返回 null
}
function filterLines(lines) {
let result = [];
// 先根据第一个ts名称来初始化参数
for (let i = 0; i < lines.length; i++) {
const line = lines[i];
let the_ts_name_len = line.indexOf('.ts'); // ts前缀长度
if (the_ts_name_len > 0) {
ts_name_len = the_ts_name_len;
let ts_name_index = extractNumberBeforeTS(line);
if (ts_name_index === null) {
ts_type = 1; // ts命名模式
console.log('----------------------------识别ts模式1---------------------------');
} else {
prev_ts_name_index = ts_name_index; // ts序列号
prev_ts_name_index--;
}
break;
}
if (i === lines.length - 1) {
console.log('----------------------------识别ts模式0---------------------------');
}
}
// 开始遍历过滤
for (let i = 0; i < lines.length; i++) {
let ts_index_check = false;
const line = lines[i];
if (ts_type === 0) {
if (line.startsWith('#EXT-X-DISCONTINUITY') && lines[i + 1] && lines[i + 2]) {
// 检查当前行是否跟 #EXT-X-PLAYLIST-TYPE相关
if (i > 0 && lines[i - 1].startsWith('#EXT-X-PLAYLIST-TYPE')) {
result.push(line);
continue;
} else {
let the_ts_name_len = lines[i + 2].indexOf('.ts'); // ts前缀长度
if (the_ts_name_len > 0) {
// 根据ts名字长度过滤
if (the_ts_name_len - ts_name_len > ts_name_len_extend) {
// 广告过滤
if (lines[i + 3] && lines[i + 3].startsWith('#EXT-X-DISCONTINUITY')) {
// 打印即将过滤的行
console.log('------------------------------------------------------------------');
console.log('过滤规则: #EXT-X-DISCONTINUITY-ts文件名长度-');
console.log('过滤的行:', "\n", line, "\n", lines[i + 1], "\n", lines[i + 2], "\n", lines[i + 3]);
console.log('------------------------------------------------------------------');
i += 3;
} else {
// 打印即将过滤的行
console.log('------------------------------------------------------------------');
console.log('过滤规则: #EXT-X-DISCONTINUITY-ts文件名长度');
console.log('过滤的行:', "\n", line, "\n", lines[i + 1], "\n", lines[i + 2]);
console.log('------------------------------------------------------------------');
i += 2;
}
continue;
} else {
ts_name_len = the_ts_name_len;
}
// 根据ts序列号过滤
let the_ts_name_index = extractNumberBeforeTS(lines[i + 2]);
if (the_ts_name_index !== prev_ts_name_index + 1) {
// 广告过滤
if (lines[i + 3] && lines[i + 3].startsWith('#EXT-X-DISCONTINUITY')) {
// 打印即将过滤的行
console.log('------------------------------------------------------------------');
console.log('过滤规则: #EXT-X-DISCONTINUITY-ts序列号-');
console.log('过滤的行:', "\n", line, "\n", lines[i + 1], "\n", lines[i + 2], "\n", lines[i + 3]);
console.log('------------------------------------------------------------------');
i += 3;
} else {
// 打印即将过滤的行
console.log('------------------------------------------------------------------');
console.log('过滤规则: #EXT-X-DISCONTINUITY-ts序列号');
console.log('过滤的行:', "\n", line, "\n", lines[i + 1], "\n", lines[i + 2]);
console.log('------------------------------------------------------------------');
i += 2;
}
continue;
}
}
}
}
if (line.startsWith('#EXTINF') && lines[i + 1]) {
let the_ts_name_len = lines[i + 1].indexOf('.ts'); // ts前缀长度
if (the_ts_name_len > 0) {
// 根据ts名字长度过滤
if (the_ts_name_len - ts_name_len > ts_name_len_extend) {
// 广告过滤
if (lines[i + 2] && lines[i + 2].startsWith('#EXT-X-DISCONTINUITY')) {
// 打印即将过滤的行
console.log('------------------------------------------------------------------');
console.log('过滤规则: #EXTINF-ts文件名长度-');
console.log('过滤的行:', "\n", line, "\n", lines[i + 1], "\n", lines[i + 2]);
console.log('------------------------------------------------------------------');
i += 2;
} else {
// 打印即将过滤的行
console.log('------------------------------------------------------------------');
console.log('过滤规则: #EXTINF-ts文件名长度');
console.log('过滤的行:', "\n", line, "\n", lines[i + 1]);
console.log('------------------------------------------------------------------');
i += 1;
}
continue;
} else {
ts_name_len = the_ts_name_len;
}
// 根据ts序列号过滤
let the_ts_name_index = extractNumberBeforeTS(lines[i + 1]);
if (the_ts_name_index === prev_ts_name_index + 1) {
prev_ts_name_index++;
} else {
// 广告过滤
if (lines[i + 2].startsWith('#EXT-X-DISCONTINUITY')) {
// 打印即将过滤的行
console.log('------------------------------------------------------------------');
console.log('过滤规则: #EXTINF-ts序列号-');
console.log('过滤的行:', "\n", line, "\n", lines[i + 1], "\n", lines[i + 2]);
console.log('------------------------------------------------------------------');
i += 2;
} else {
// 打印即将过滤的行
console.log('------------------------------------------------------------------');
console.log('过滤规则: #EXTINF-ts序列号');
console.log('过滤的行:', "\n", line, "\n", lines[i + 1]);
console.log('------------------------------------------------------------------');
i += 1;
}
continue;
}
}
}
} else {
if (line.startsWith('#EXT-X-DISCONTINUITY')) {
// 检查当前行是否跟 #EXT-X-PLAYLIST-TYPE相关
if (i > 0 && lines[i - 1].startsWith('#EXT-X-PLAYLIST-TYPE')) {
result.push(line);
continue;
} else {
// 如果第 i+2 行是 .ts 文件，跳过当前行和接下来的两行
if (lines[i + 2] && lines[i + 2].indexOf('.ts') > 0) {
// 进一步检测第 i+3 行是否也是 #EXT-X-DISCONTINUITY
if (lines[i + 3] && lines[i + 3].startsWith('#EXT-X-DISCONTINUITY')) {
// 打印即将过滤的行
console.log('------------------------------------------------------------------');
console.log('过滤规则: #EXT-X-DISCONTINUITY-广告-#EXT-X-DISCONTINUITY过滤');
console.log('过滤的行:', "\n", line, "\n", lines[i + 1], "\n", lines[i + 2], "\n", lines[i + 3]);
console.log('------------------------------------------------------------------');
i += 3; // 跳过当前行和接下来的三行
} else {
// 打印即将过滤的行
console.log('------------------------------------------------------------------');
console.log('过滤规则: #EXT-X-DISCONTINUITY-单个标识过滤');
console.log('过滤的行:', "\n", line);
console.log('------------------------------------------------------------------');
}
continue;
}
}
}
}
// 保留不需要过滤的行
result.push(line);
}
return result;
}
function hookXHR() {
const OriginalXHR = unsafeWindow.XMLHttpRequest;
unsafeWindow.XMLHttpRequest = class extends OriginalXHR {
constructor() {
super();
this.addEventListener('readystatechange', async function () {
if (this.readyState === 4 && this.status === 200 && isM3U8File(this.responseURL)) {
const modifiedResponse = await safelyProcessM3U8(this.responseURL, this.responseText);
Object.defineProperty(this, 'responseText', { value: modifiedResponse });
Object.defineProperty(this, 'response', { value: modifiedResponse });
}
}, false);
}
};
}
})();
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