Replaced Crunchyroll's Flash player with an HTML5 equivalent
// ==UserScript==
// @name Crunchyroll HTML5
// @namespace DoomTay
// @description Replaced Crunchyroll's Flash player with an HTML5 equivalent
// @include http://www.crunchyroll.com/*
// @include https://www.crunchyroll.com/*
// @require https://cdn.rawgit.com/peterolson/BigInteger.js/979795b450bcbc9d1d06accb6ab57417501edb08/BigInteger.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.9-1/crypto-js.js
// @require https://cdnjs.cloudflare.com/ajax/libs/pako/1.0.6/pako_inflate.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/aes-js/3.1.0/index.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/video.js/5.20.1/video.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/videojs-contrib-hls/5.12.2/videojs-contrib-hls.min.js
// @require https://cdn.rawgit.com/Arnavion/libjass/b13173112df83073e03fdd209b87de61f7eb7726/demo/libjass.js
// @require https://cdnjs.cloudflare.com/ajax/libs/videojs-vast-vpaid/2.0.2/videojs_5.vast.vpaid.js
// @resource vjsCSS https://cdnjs.cloudflare.com/ajax/libs/video.js/5.20.1/video-js.min.css
// @resource vpaidCSS https://cdnjs.cloudflare.com/ajax/libs/videojs-vast-vpaid/2.0.2/videojs.vast.vpaid.min.css
// @resource libjassCSS https://cdn.rawgit.com/Arnavion/libjass/b13173112df83073e03fdd209b87de61f7eb7726/demo/libjass.css
// @resource vjsASSCSS https://cdn.rawgit.com/SunnyLi/videojs-ass/a884c6b8fcc8bab9e760214bb551601f54cd769f/src/videojs.ass.css
// @resource vjsASSJS https://cdn.rawgit.com/SunnyLi/videojs-ass/a884c6b8fcc8bab9e760214bb551601f54cd769f/src/videojs.ass.js
// @resource VPAIDSWF https://cdnjs.cloudflare.com/ajax/libs/videojs-vast-vpaid/2.0.2/VPAIDFlash.swf
// @version 0.9.7
// @grant none
// @run-at document-start
// @no-frames
// ==/UserScript==
//As we're loading from document-start, it will be much harder to get access to the page's "built in" libjass variable, so we'll set up our own.
if(!window.libjass) window.libjass = libjass;
var subXSL = new DOMParser().parseFromString(`<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:fo="http://www.w3.org/1999/XSL/Format" >
<xsl:output method="text" omit-xml-declaration="yes" indent="no"/>
<xsl:strip-space elements="*"/>
<xsl:template match="subtitle_script">[Script Info]
<xsl:value-of select="concat('Title: ', @title,'
',
'ScriptType: v4.00+','
',
'WrapStyle: ', @wrap_style,'
',
'PlayResX: ', @play_res_x,'
',
'PlayResY: ', @play_res_y,'
',
'Subtitle ID: ', @id,'
',
'Language: ', @lang_string,'
',
'Created: ', @created)"/>
<xsl:variable name="langCode" select="@lang_code"/>
[V4+ Styles]
Format: Name,Fontname,Fontsize,PrimaryColour,SecondaryColour,OutlineColour,BackColour,Bold,Italic,Underline,StrikeOut,ScaleX,ScaleY,Spacing,Angle,BorderStyle,Outline,Shadow,Alignment,MarginL,MarginR,MarginV,Encoding
<xsl:for-each select="styles/style">
<xsl:variable name="formattedName" select="concat(translate(@name,' ','_'),'_',$langCode)"/>
<xsl:value-of select="concat('Style: ',
$formattedName,',',
@font_name,',',
@font_size,',',
@primary_colour,',',
@secondary_colour,',',
@outline_colour,',',
@back_colour,',',
@bold,',',
@italic,',',
@underline,',',
@strikeout,',',
@scale_x,',',
@scale_y,',',
@spacing,',',
@angle,',',
@border_style,',',
@outline,',',
@shadow,',',
@alignment,',',
@margin_l,',',
@margin_r,',',
@margin_v,',',
@encoding,'
')"/>
</xsl:for-each>
[Events]
Format: Layer,Start,End,Style,Name,MarginL,MarginR,MarginV,Effect,Text
<xsl:for-each select="events/event">
<xsl:variable name="formattedName" select="concat(translate(@style,' ','_'),'_',$langCode)"/>
<xsl:value-of select="concat('Dialogue: 0,',
@start,',',
@end,',',
$formattedName,',',
@name,',',
@margin_l,',',
@margin_r,',',
@margin_v,',',
@effect,',',
@text,'
')"/>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>`,"text/xml");
//Since the videojs ASS plugin relies on libjass, loading it with @require won't really work, so instead we'll load it in the page.
function loadPlugin()
{
return new Promise(function(resolve,reject) {
var newScript = document.createElement("script");
newScript.type = "text/javascript";
newScript.src = GM_getResourceURL("vjsASSJS");
newScript.onload = resolve;
document.head.appendChild(newScript);
});
}
//Find the script that powers the embedSWF function so we can overwrite. This is why the script is set to load at document-start. This way, we have access to the function parameters, and more importantly, the function can be overwritten before the Flash plugin has a chance to load.
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
mutation.addedNodes.forEach(findSWFScript);
});
});
var config = { childList: true, subtree: true };
observer.observe(document, config);
var callbackCount = 0;
var lastPing = 0;
var pingIntervals = [];
var previousTime = 0;
var elapsed = 0;
var seeking = false;
for(var i = 0; i < document.scripts.length; i++)
{
findSWFScript(document.scripts[i]);
}
function findSWFScript(start)
{
if(start.nodeName == "SCRIPT" && start.src.includes("http://static.ak.crunchyroll.com/versioned_assets/js/modules/www/application"))
{
observer.disconnect();
start.addEventListener("load",function()
{
swfobject.embedSWF = function(swf,id,width,height,version,downloadURL,params)
{
var placeholder = document.getElementById(id);
var newVideo = document.createElement("video");
newVideo.id = id;
newVideo.className = "video-js vjs-default-skin";
newVideo.controls = true;
newVideo.width = width;
newVideo.height = height;
placeholder.parentNode.replaceChild(newVideo,placeholder);
var configURL = decodeURIComponent(params.config_url);
getConfig(configURL).then(function(config)
{
newVideo.poster = config.getElementsByTagName("default:backgroundUrl")[0].textContent;
var streamInfo = config.querySelector("stream_info");
var mediaID = config.getElementsByTagName("default:mediaId")[0].textContent;
var autoplay = config.getElementsByTagName("default:isAutoPlay")[0].textContent == 1;
var streamFile = streamInfo.querySelector("file").textContent;
var subtitleTag = config.querySelector("subtitle:not([link])");
var scriptObject = subtitleTag ? parseSubtitles(subtitleTag) : null;
var initialVolume = config.getElementsByTagName("default:initialVolume")[0].textContent;
var initialMute = config.getElementsByTagName("default:initialMute")[0].textContent == "true";
var streamObject = {};
streamObject.media_id = mediaID;
streamObject.video_encode_id = streamInfo.getElementsByTagName("video_encode_id")[0].textContent;
streamObject.media_type = streamInfo.querySelector("media_type").textContent;
streamObject.ping_back_hash = streamInfo.querySelector("pingback").querySelector("hash").textContent;
streamObject.ping_back_hash_time = streamInfo.querySelector("pingback").querySelector("time").textContent;
pingIntervals = config.getElementsByTagName("default:pingBackIntervals")[0].textContent.split(" ");
var adSlots = config.getElementsByTagName("adSlots")[0];
loadPlugin().then(() =>
{
window.videojs(id, {
sources: [
{src: streamFile,type: 'application/x-mpegURL'}
],
controlBar: {
children: [
'playToggle',
'progressControl',
'currentTimeDisplay',
'timeDivider',
'durationDisplay',
'liveDisplay',
'customControlSpacer',
'playbackRateMenuButton',
'chaptersButton',
'subtitlesButton',
'captionsButton',
'fullscreenToggle',
'volumeMenuButton'
]
}}, function()
{
var player = this;
//Load needed CSS.
createCSS(GM_getResourceURL("vjsCSS"));
createCSS(GM_getResourceURL("vpaidCSS"));
createCSS(GM_getResourceURL("libjassCSS"));
createCSS(GM_getResourceURL("vjsASSCSS"));
//Adding custom stylesheet after video is initialized so that the "default" stylesheet doesn't override it
var newStyleSheet = document.createElement("style");
newStyleSheet.rel = "stylesheet";
newStyleSheet.innerHTML = ".vjs-volume-menu-button.vjs-menu-button-inline\n\
{\n\
width: 12em;\n\
}\n\
.vjs-volume-menu-button.vjs-menu-button-inline .vjs-menu\n\
{\n\
opacity: 1;\n\
}\n\
.video-js .vjs-control-bar\n\
{\n\
background-color:#333;\n\
}\n\
.video-js .vjs-play-progress, .video-js .vjs-volume-level, .video-js .vjs-progress-holder, .video-js .vjs-load-progress div\n\
{\n\
background-color:#f7931e;\n\
}\n\
.video-js .vjs-current-time\n\
{\n\
display:block;\n\
padding-right: 0;\n\
}\n\
.video-js .vjs-time-divider\n\
{\n\
display:block;\n\
}\n\
.video-js .vjs-duration\n\
{\n\
display:block;\n\
padding-left: 0;\n\
}";
document.head.appendChild(newStyleSheet);
if(adSlots && adSlots.children.length > 0)
{
var slots = adSlots.getElementsByTagName("adSlot");
var adTags = Array.from(slots[0].getElementsByTagName("vastAd"),ad => ad.getAttribute("url"));
//At the moment, the VAST plugin can only handle one ad.
var adUrl = adTags[0];
if(adUrl)
{
var vastAd = player.vastClient({
"adTagUrl": adUrl,
"playAdAlways": true,
"vpaidFlashLoaderPath": GM_getResourceURL("VPAIDSWF"),
"adsEnabled": true
});
player.on("vast.contentStart", function()
{
jumpAhead();
});
}
}
if(scriptObject)
{
var convertedSubs = convertSubFile(scriptObject);
var subtitleBlob = URL.createObjectURL(new Blob([convertedSubs], {type : "text/plain"}));
var vjs_ass = player.ass({
"src": [subtitleBlob],
"label": scriptObject.getAttribute("title"),
"srclang": scriptObject.getAttribute("lang_code").substring(0,2),
"enableSvg": false,
"delay": 0
});
//Switching immediately on load doesn't immediately work for whatever reason. This gets around that
player.on("vast.contentStart", function()
{
var currentTrack = Array.from(player.textTracks()).find(sub => sub.language == scriptObject.getAttribute("lang_code").substring(0,2));
currentTrack.mode = "showing";
});
var otherSubs = config.querySelectorAll("subtitle[link]");
if(otherSubs)
{
for(var s = 0; s < otherSubs.length; s++)
{
if(otherSubs[s].id == scriptObject.id) continue;
var subs = new XMLHttpRequest();
subs.onload = function () {
var response = this.response;
var parsedSubtitle = parseSubtitles(response.children[0]);
var convertedScript = convertSubFile(parsedSubtitle);
var subtitleBlob = URL.createObjectURL(new Blob([convertedScript], {type : "text/plain"}));
vjs_ass.loadNewSubtitle(subtitleBlob,parsedSubtitle.getAttribute("title"),parsedSubtitle.getAttribute("lang_code").substring(0,2),false);
};
subs.open("GET", otherSubs[s].getAttribute("link"), true);
subs.responseType = "document";
subs.send();
}
}
}
player.volume(initialVolume / 100);
if(initialMute) player.muted(true);
jumpAhead();
if(autoplay) player.play();
player.on("seeked", function()
{
seeking = false;
previousTime = this.currentTime();
});
player.on("seeking", function()
{
seeking = true;
});
player.on("timeupdate", function()
{
if(!seeking)
{
var delta = this.currentTime() - previousTime;
//Hack to get around delta being unusual when video is seeking
delta = Math.max(Math.min(delta,1),0);
elapsed += delta;
previousTime = this.currentTime();
testPing();
}
});
function jumpAhead()
{
var startTime = config.getElementsByTagName("default:startTime")[0];
if(startTime && startTime.textContent > 0) player.currentTime(startTime.textContent);
previousTime = player.currentTime();
}
function testPing()
{
var currentInterval = Math.min(pingIntervals.length, callbackCount);
if((elapsed * 1000) >= pingIntervals[currentInterval])
{
ping(streamObject,(elapsed * 1000),player.currentTime());
elapsed -= (pingIntervals[currentInterval] / 1000);
}
}
});
});
});
};
});
}
}
function setData(newCallCount,newPing)
{
callbackCount = newCallCount;
lastPing = newPing;
}
function createCSS(css)
{
var newStyleSheet = document.createElement("link");
newStyleSheet.rel = "stylesheet";
newStyleSheet.href = css;
document.head.appendChild(newStyleSheet);
}
function parseSubtitles(subtitles)
{
var iv = bytesToNumbers(atob(subtitles.getElementsByTagName("iv")[0].textContent));
var subData = bytesToNumbers(atob(subtitles.getElementsByTagName("data")[0].textContent));
var id = parseInt(subtitles.getAttribute("id"));
var key = createKey(id);
//CryptoJS's AES decrypting cuts off the resulting string sometimes, so we're using something else instead.
var aesCbc = new aesjs.ModeOfOperation.cbc(bytesToNumbers(key.toString(CryptoJS.enc.Latin1)), iv);
var decrypted = aesCbc.decrypt(subData);
var deflated = pako.inflate(decrypted, {to: "string"});
var script = new DOMParser().parseFromString(deflated,"text/xml").querySelector("subtitle_script");
return script;
function bytesToNumbers(bytes)
{
return Uint8Array.from(bytes,(letter,i) => bytes.charCodeAt(i));
}
function createKey(id)
{
function magic()
{
var hash = bigInt(88140282).xor(id).toJSNumber();
var multipliedHash = bigInt(hash).multiply(32).toJSNumber();
return bigInt(hash).xor(hash >> 3).xor(multipliedHash).toJSNumber();
}
var hash = "$&).6CXzPHw=2N_+isZK" + magic();
var shaHashed = CryptoJS.SHA1(hash);
var keyString = shaHashed.toString(CryptoJS.enc.Latin1);
var recodedKey = CryptoJS.enc.Latin1.parse(keyString.padEnd(32,"\u0000"));
return recodedKey;
}
}
function getConfig(configURL)
{
return new Promise(function(resolve,reject)
{
var config = new XMLHttpRequest();
config.onload = function()
{
resolve(this.response);
};
config.onerror = reject;
config.open("POST", configURL, true);
config.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
config.responseType = "document";
config.send("current_page=" + window.location.href);
});
}
function ping(streamData, newLastPing, playhead)
{
var newCallCount = callbackCount + 1;
var sinceLastPing = newLastPing - lastPing;
sendPing(streamData,newCallCount,sinceLastPing,playhead);
setData(newCallCount,newLastPing);
}
function sendPing(entry, callCount, timeSinceLastPing, playhead)
{
var params = new URLSearchParams();
params.set("current_page",window.location.href);
params.set("req","RpcApiVideo_VideoView");
params.set("media_id",entry.media_id);
params.set("video_encode_id",entry.video_encode_id);
params.set("media_type",entry.media_type);
params.set("h",entry.ping_back_hash);
params.set("ht",entry.ping_back_hash_time);
params.set("cbcallcount",callCount);
params.set("cbelapsed",Math.floor(timeSinceLastPing / 1000));
if(!isNaN(playhead)) params.set("playhead",playhead);
var ping = new XMLHttpRequest();
ping.open("POST", "/ajax/", true);
ping.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
ping.send(params);
}
function convertSubFile(subs)
{
var xsltProcessor = new XSLTProcessor();
xsltProcessor.importStylesheet(subXSL);
resultDocument = xsltProcessor.transformToFragment(subs, document);
return resultDocument.textContent;
}
function GM_getResourceURL(resourceName)
{
if(GM_info.script.resources[resourceName]) return GM_info.script.resources[resourceName].url;
else
{
//The "built in" mimetype tends to be inaccurate, so we're doing something simpler to determine the mimetype of the resource
var resourceObject = GM_info.script.resources.find(resource => resource.name == resourceName);
var mimetype;
if(resourceObject.url.endsWith(".swf")) mimetype = "application/x-shockwave-flash";
else mimetype = resourceObject.meta;
var dataURL = "data:" + mimetype + "," + encodeURIComponent(resourceObject.content);
return dataURL;
}
}