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@zerodytrash
zerodytrash committed Jan 5, 2022
1 parent 250a5d2 commit d97af9c
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124 changes: 44 additions & 80 deletions dist/Simple-YouTube-Age-Restriction-Bypass.user.js
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Expand Up @@ -5,7 +5,7 @@
// @description:de Schaue YouTube Videos mit Altersbeschränkungen ohne Anmeldung und ohne dein Alter zu bestätigen :)
// @description:fr Regardez des vidéos YouTube avec des restrictions d'âge sans vous inscrire et sans confirmer votre âge :)
// @description:it Guarda i video con restrizioni di età su YouTube senza login e senza verifica dell'età :)
// @version 2.3.1
// @version 2.3.2
// @author Zerody (https://github.com/zerodytrash)
// @namespace https://github.com/zerodytrash/Simple-YouTube-Age-Restriction-Bypass/
// @supportURL https://github.com/zerodytrash/Simple-YouTube-Age-Restriction-Bypass/issues
Expand Down Expand Up @@ -37,7 +37,6 @@

// Script configuration variables
const UNLOCKABLE_PLAYER_STATES = ['AGE_VERIFICATION_REQUIRED', 'AGE_CHECK_REQUIRED', 'LOGIN_REQUIRED'];
const PLAYER_RESPONSE_ALIASES = ['ytInitialPlayerResponse', 'playerResponse'];

// The following proxies are currently used as fallback if the innertube age-gate bypass doesn't work...
// You can host your own account proxy instance. See https://github.com/zerodytrash/Simple-YouTube-Age-Restriction-Bypass/tree/main/account-proxy
Expand All @@ -57,6 +56,10 @@
'-oaymwESCOADEOgC8quKqQMG7QGZmRlC' // Mobile 480x360
];

const nativeJSONParse = window.JSON.parse;

const nativeXMLHttpRequestOpen = XMLHttpRequest.prototype.open;

const isDesktop = window.location.host !== 'm.youtube.com';
const isEmbed = window.location.pathname.includes('/embed/');

Expand Down Expand Up @@ -244,29 +247,9 @@
return new Deferred();
})();

const nativeJSONParse = window.JSON.parse;

const nativeXMLHttpRequestOpen = XMLHttpRequest.prototype.open;

// Some extensions like AdBlock override the Object.defineProperty function to prevent a redefinition of the 'ytInitialPlayerResponse' variable by YouTube.
// But we need to define a custom descriptor to that variable to intercept its value. This behavior causes a race condition depending on the execution order with this script :(
// To solve this problem the native defineProperty function will be retrieved from another window (iframe)
const nativeObjectDefineProperty = (() => {
// Check if function is native
if (Object.defineProperty.toString().includes('[native code]')) {
return Object.defineProperty;
}

// If function is overidden, restore the native function from another window...
const tempFrame = createElement('iframe', { style: `display: none;` });
document.documentElement.append(tempFrame);

const native = tempFrame.contentWindow.Object.defineProperty;

tempFrame.remove();

return native;
})();
function createDeepCopy(obj) {
return nativeJSONParse(JSON.stringify(obj));
}

function getYtcfgValue(value) {var _window$ytcfg;
return (_window$ytcfg = window.ytcfg) === null || _window$ytcfg === void 0 ? void 0 : _window$ytcfg.get(value);
Expand Down Expand Up @@ -358,67 +341,43 @@
}
}

let wrappedPlayerResponse;
let wrappedNextResponse;

function attachInitialDataInterceptor(onInititalDataSet) {
// Just for compatibility: Backup original getter/setter for 'ytInitialPlayerResponse', defined by other extensions like AdBlock
let { get: chainedPlayerGetter, set: chainedPlayerSetter } = Object.getOwnPropertyDescriptor(window, 'ytInitialPlayerResponse') || {};
if (!isDesktop) {
window.addEventListener('initialdata', () => {
info('Mobile initialData fired');
onInititalDataSet(window.getInitialData());
});
return;
}

// Just for compatibility: Intercept (re-)definitions on YouTube's initial player response property to chain setter/getter from other extensions by hijacking the Object.defineProperty function
Object.defineProperty = (obj, prop, descriptor) => {
if (obj === window && PLAYER_RESPONSE_ALIASES.includes(prop)) {
info("Another extension tries to redefine '" + prop + "' (probably an AdBlock extension). Chain it...");
const addInitialDataProxy = () => {var _window;
(_window = window).getInitialData && (_window.getInitialData = new Proxy(window.getInitialData, {
apply(target) {
info('Desktop initialData fired');
return onInititalDataSet(createDeepCopy(target()));
} }));

if (descriptor !== null && descriptor !== void 0 && descriptor.set) chainedPlayerSetter = descriptor.set;
if (descriptor !== null && descriptor !== void 0 && descriptor.get) chainedPlayerGetter = descriptor.get;
} else {
nativeObjectDefineProperty(obj, prop, descriptor);
}
};

// Redefine 'ytInitialPlayerResponse' to inspect and modify the initial player response as soon as the variable is set on page load
nativeObjectDefineProperty(window, 'ytInitialPlayerResponse', {
set: (playerResponse) => {
// prevent recursive setter calls by ignoring unchanged data (this fixes a problem caused by Brave browser shield)
if (playerResponse === wrappedPlayerResponse) return;

wrappedPlayerResponse = isObject(playerResponse) ? onInititalDataSet(playerResponse) : playerResponse;
if (typeof chainedPlayerSetter === 'function') chainedPlayerSetter(wrappedPlayerResponse);
},
get: () => {
if (typeof chainedPlayerGetter === 'function')
try {
return chainedPlayerGetter();
} catch (err) {
// ignore the error
}
return wrappedPlayerResponse || {};
},
configurable: true });


// Also redefine 'ytInitialData' for the initial next/sidebar response
nativeObjectDefineProperty(window, 'ytInitialData', {
set: (nextResponse) => {
wrappedNextResponse = isObject(nextResponse) ? onInititalDataSet(nextResponse) : nextResponse;
},
get: () => wrappedNextResponse,
configurable: true });
// `getInitialData` is only available a little earlier and a little later than `DOMContentLoaded`
// As long as YouTube has not fully initialized, `getInitialData` is defined
window.addEventListener('DOMContentLoaded', addInitialDataProxy);

// Support for `@run-at document-end`, since in that case it's already too late for `DOMContentLoaded`
if (document.readyState !== 'loading') addInitialDataProxy();
}

// Intercept, inspect and modify JSON-based communication to unlock player responses by hijacking the JSON.parse function
function attachJsonInterceptor(onJsonDataReceived) {
window.JSON.parse = (text, reviver) => {
const data = nativeJSONParse(text, reviver);
return !isObject(data) ? data : onJsonDataReceived(data);
window.JSON.parse = function () {
const data = nativeJSONParse.apply(this, arguments);
return isObject(data) ? onJsonDataReceived(data) : data;
};
}

function attachXhrOpenInterceptor(onXhrOpenCalled) {
XMLHttpRequest.prototype.open = function (method, url) {
if (arguments.length > 1 && typeof url === 'string' && url.indexOf('https://') === 0) {
if (typeof url === 'string' && url.indexOf('https://') === 0) {
const modifiedUrl = onXhrOpenCalled(this, method, new URL(url));

if (typeof modifiedUrl === 'string') {
Expand Down Expand Up @@ -553,7 +512,7 @@


let lastProxiedGoogleVideoUrlParams;
let responseCache = {};
let cachedPlayerResponse = {};

function getUnlockStrategies(playerResponse) {var _playerResponse$video, _playerResponse$playa, _playerResponse$previ;
const videoId = ((_playerResponse$video = playerResponse.videoDetails) === null || _playerResponse$video === void 0 ? void 0 : _playerResponse$video.videoId) || getYtcfgValue('PLAYER_VARS').video_id;
Expand Down Expand Up @@ -616,7 +575,7 @@
// See https://github.com/zerodytrash/Simple-YouTube-Age-Restriction-Bypass/tree/main/account-proxy
{
name: 'Account Proxy',
requireAuth: false,
requiresAuth: false,
payload: {
videoId,
reason,
Expand Down Expand Up @@ -672,7 +631,7 @@
const videoId = ((_playerResponse$video2 = playerResponse.videoDetails) === null || _playerResponse$video2 === void 0 ? void 0 : _playerResponse$video2.videoId) || getYtcfgValue('PLAYER_VARS').video_id;

// Check if response is cached
if (responseCache.videoId === videoId) return responseCache.unlockedPlayerResponse;
if (cachedPlayerResponse.videoId === videoId) return createDeepCopy(cachedPlayerResponse);

const unlockStrategies = getUnlockStrategies(playerResponse);

Expand All @@ -691,7 +650,7 @@
});

// Cache response to prevent a flood of requests in case youtube processes a blocked response mutiple times.
responseCache = { videoId, unlockedPlayerResponse };
cachedPlayerResponse = { videoId, ...createDeepCopy(unlockedPlayerResponse) };

return unlockedPlayerResponse;
}
Expand Down Expand Up @@ -771,37 +730,42 @@
}

try {
attachInitialDataInterceptor(checkAndUnlock);
attachJsonInterceptor(checkAndUnlock);
attachXhrOpenInterceptor(onXhrOpenCalled);
attachInitialDataInterceptor(checkAndUnlock);
} catch (err) {
error(err, 'Error while attaching data interceptors');
}

function checkAndUnlock(ytData) {
try {
// Unlock #1: Initial page data structure and response from the '/youtubei/v1/player' endpoint
// Unlock #1: Response from `/youtubei/v1/player` XHR request
if (isPlayerObject(ytData) && isAgeRestricted(ytData.playabilityStatus)) {
unlockPlayerResponse(ytData);
}
// Unlock #2: Legacy response data structure (only used by m.youtube.com with &pbj=1)
// Unlock #2: Initial page data structure from `window.getInitialData()`
else if (isPlayerObject(ytData.playerResponse) && isAgeRestricted(ytData.playerResponse.playabilityStatus)) {
unlockPlayerResponse(ytData.playerResponse);
}
// Unlock #3: Embedded Player inital data structure
else if (isEmbeddedPlayerObject(ytData) && isAgeRestricted(ytData.previewPlayabilityStatus)) {
unlockPlayerResponse(ytData);
}
} catch (err) {
error(err, 'Video unlock failed');
}

try {
// Equivelant of unlock #1 for sidebar/next response
else if (isWatchNextObject(ytData) && isWatchNextSidebarEmpty(ytData)) {
if (isWatchNextObject(ytData) && isWatchNextSidebarEmpty(ytData)) {
unlockNextResponse(ytData);
}
// Equivelant of unlock #2 for sidebar/next response
else if (isWatchNextObject(ytData.response) && isWatchNextSidebarEmpty(ytData.response)) {
unlockNextResponse(ytData.response);
}
} catch (err) {
error(err, 'Video or sidebar unlock failed');
error(err, 'Sidebar unlock failed');
}

try {
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2 changes: 1 addition & 1 deletion package.json
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Expand Up @@ -2,7 +2,7 @@
"type": "module",
"name": "simple-youtube-age-restriction-bypass",
"description": "A simple userscript to bypass YouTube's age verification and watch age restricted videos without having to sign in.",
"version": "2.3.1",
"version": "2.3.2",
"repository": {
"type": "git",
"url": "git+https://github.com/zerodytrash/Simple-YouTube-Age-Restriction-Bypass.git"
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