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console.log("Media Hook", document.documentElement.innerHTML);
try {
(() => {
let unpatched = new Map();
function patch(obj, methodName, replacement) {
let methods = unpatched.get(obj) || {};
methods[methodName] = obj[methodName];
exportFunction(replacement, obj, {defineAs: methodName});
unpatched.set(obj, methods);
}
patch(window.console, "log", function(s, ...args) {
unpatched.get(window.console).log.call(`PATCHED ${s}`, ...args);
});
let urlMap = new WeakMap();
patch(window.URL, "createObjectURL", function(o, ...args) {
let url = unpatched.get(window.URL).createObjectURL.call(this, o, ...args);
if (o instanceof MediaSource) {
let urls = urlMap.get(o);
if (!urls) urlMap.set(o, urls = new Set());
urls.add(url);
}
return url;
});
patch(window.MediaSource.prototype, "addSourceBuffer", function(mime, ...args) {
let ms = this;
let urls = urlMap.get(ms);
let me = Array.from(document.querySelectorAll("video,audio"))
.find(e => e.srcObject === ms || urls && urls.has(e.src));
let exposedMime = `${mime} (MSE)`;
let request = {
id: "noscript-media",
type: "media",
url: document.URL,
documentUrl: document.URL,
embeddingDocument: true,
};
seen.record({policyType: "media", request, allowed: false});
notifyPage();
if (window.mediaBlocker) {
try {
let ph = PlaceHolder.create("media", request);
ph.replace(me);
PlaceHolder.listen();
} catch (e) {
error(e);
}
throw new Error(`${exposedMime} blocked by NoScript`);
}
return unpatched.get(window.MediaSource.prototype).addSourceBuffer.call(ms, mime, ...args);
});
})();
} catch (e) {
error(e, "Cannot patch MediaSource");
}
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