92 lines
2.5 KiB
JavaScript
92 lines
2.5 KiB
JavaScript
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'use strict'
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const { PuppeteerExtraPlugin } = require('puppeteer-extra-plugin')
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const withUtils = require('../_utils/withUtils')
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/**
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* Fix Chromium not reporting "probably" to codecs like `videoEl.canPlayType('video/mp4; codecs="avc1.42E01E"')`.
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* (Chromium doesn't support proprietary codecs, only Chrome does)
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*/
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class Plugin extends PuppeteerExtraPlugin {
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constructor(opts = {}) {
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super(opts)
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}
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get name() {
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return 'stealth/evasions/media.codecs'
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}
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async onPageCreated(page) {
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await withUtils(page).evaluateOnNewDocument(utils => {
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/**
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* Input might look funky, we need to normalize it so e.g. whitespace isn't an issue for our spoofing.
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*
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* @example
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* video/webm; codecs="vp8, vorbis"
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* video/mp4; codecs="avc1.42E01E"
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* audio/x-m4a;
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* audio/ogg; codecs="vorbis"
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* @param {String} arg
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*/
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const parseInput = arg => {
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const [mime, codecStr] = arg.trim().split(';')
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let codecs = []
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if (codecStr && codecStr.includes('codecs="')) {
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codecs = codecStr
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.trim()
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.replace(`codecs="`, '')
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.replace(`"`, '')
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.trim()
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.split(',')
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.filter(x => !!x)
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.map(x => x.trim())
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}
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return {
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mime,
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codecStr,
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codecs
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}
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}
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const canPlayType = {
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// Intercept certain requests
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apply: function(target, ctx, args) {
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if (!args || !args.length) {
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return target.apply(ctx, args)
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}
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const { mime, codecs } = parseInput(args[0])
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// This specific mp4 codec is missing in Chromium
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if (mime === 'video/mp4') {
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if (codecs.includes('avc1.42E01E')) {
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return 'probably'
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}
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}
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// This mimetype is only supported if no codecs are specified
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if (mime === 'audio/x-m4a' && !codecs.length) {
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return 'maybe'
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}
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// This mimetype is only supported if no codecs are specified
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if (mime === 'audio/aac' && !codecs.length) {
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return 'probably'
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}
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// Everything else as usual
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return target.apply(ctx, args)
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}
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}
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/* global HTMLMediaElement */
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utils.replaceWithProxy(
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HTMLMediaElement.prototype,
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'canPlayType',
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canPlayType
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)
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})
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}
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}
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module.exports = function(pluginConfig) {
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return new Plugin(pluginConfig)
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}
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