Acces to V8

[NeverLand2023]

Hello,
is there a way to implement V8Handler?

I need to intercept the javascript requests from webpages, modify them and then send them back as a "real" response. Such as the Battermanager, navigator.userAgent and much more.

I thought about injections with Object.defineProperty(BatteryManager.prototype and the whole thing via

var script = document.createElement("script");
script.textContent = "(" + inject + ")()";
document.documentElement.appendChild(script);
script.remove();

to inject. However, this was discarded because it should probably be possible to recognize or block this type of injection.

[magreenblatt]

What is the use case?

[NeverLand2023]

The usecase is a customer projec. He needs privacy. Thats why i have to disguise many things like Useragent, timezone, webgl, canvas etc. but I read there are ways for websites to detect and block injections of an extension via CSP or something similar. I think the best solution is to use JCEF with change response from V8. Then there is no way to find out whether it is real data or not

[NeverLand2023]

can noone help?

[NeverLand2023]

pump

[KatrinaS]

I think your problem (regarding HaLp!) is that your use case could be construed as dmca / wire fraud etc illegal

But. Do you really need CEF for this, it seems to me that something (say) Apache Tomcat and plain old Java based would give you something far more and easily configurable, your problem seems to be these apparent javascript http url connections etc so give it no opportunity to make them

And as for privacy then just use Tor as a proxy