Hey!
So you want to decrypt code, and then run it? Now, thats a bit different! ^^
I would suggest using the v8::Script interface for one, but you may want to
pass "this" to the native function anyway. The context the C++ code is ran is
essentially the same as if it were running as a real nodejs function. The
difference is jsut the "language" and typing. v8::Script therefore acts as if
it was eval(), but requires a script parameter. I just looked into the stuff
again, and here is what I belive you can do.
char* script = "...";
v8::Script sc = v8::Script::Compile(script, "internal.js");
sc->Run();
This way, you keep the stuff inside your binary. The Compile function
will...compile the code. I am not certain how to pass the real context - but it
should be automaticaly set. Look at the link I sent, so you can get a better
udnerstanding. There is also a small file called shell.cc, which does similar
things.
Wish you luk with that, thats not an easy task! :)
Am Fr. Apr. 11 2014 09:28:01 schrieb samonzeweb:
> Thanks for your reply, and code.
>
> > Well, what are you expecting in an empty this object? XD You have nothing
> > assigned to it! Therefore, it will stay empty.
>
> I does a mistake about scope (with"dummy"), but I expected to see Node
> "require". Running code with Node allow you to call "require" from
> everywhere. But with my C++ code I can't call JS code with "require". I want
> to understand why I have such a difference between JS code run "directly" and
> JS code called from C++. Of course I didn't understand something but I didn't
> see what.
>
> I'll have to admit my first post was not clear enough. Perhaps could have I
> asked "Why I didn't see Node stuff, can't call Node sufff from my JS code
> called from C++ like I does" Sorry. I'll check you sample code, and take more
> time in V8 documentation.
>
> > [...] run arbitary JS code. But to be honest, I would not do this. Consider
> > the binary functions as access into the low level, and try to write as much
> > as you can via JavaScript.
>
> YES, I agree with that. C++ for low level, and don't doing a awful spaghetti
> code between C++ and JS. But in a particular case I search a way to run
> hidden JS code. Just a small part of code nobody has to see or touch after
> deployment on customer infrastructure. The idea is to load encrypted JS code,
> decrypt it from C++, and run it when needed. But I need Node functionality
> (like "require"), not just V8.
>
> I know there are others problems than just running JS code from C++, i.e.
> because with JS it's easy to display function code. But one problem at a
> time, and first I check what is really possible or not.
>
> Sam.
>
> Le jeudi 10 avril 2014 19:22:44 UTC+2, Kevin Ingwersen a écrit :
> Well, what are you expecting in an empty this object? XD You have nothing
> assigned to it! Therefore, it will stay empty. Again, check the v8 docs and
> look for v8::Script, which esentialy is what oyu want; it lets you run
> arbitary JS code. But to be honest, I would not do this. Consider the binary
> functions as access into the low level, and try to write as much as you can
> via JavaScript. If you wish to use data from an existing object, you could
> end up writing something like this?
>
>
> [....]
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