[REBOL] Re: explanation, gurus? :-) (image memory representation)
From: dockimbel:free at: 21-Aug-2001 16:56
Howdy Jeff !
Thanks for your enlightening reply !
Jeff Kreis wrote:
> Howdy, DocKimbel:
>
> > > What about this one?
> > >
> > > img: make image! [10x10 #{FFFFFF}] == make image! [10x10
> > > #{
> > > FFFFFFCC96CFD8A9CD0000000A00004C96CFE8B0CD0000000A00001C90CF
> > > E8B0CD0000000A0000C4E3D9E8B0CD0000000A000084E...
> >
> > That's clearly a bug. The byte sequence that appear is a
> > Rebol memory space dump !! It's more than a simple bug,
> > it's a potential security hole !
>
>[...] It'd be hard for someone to programmatically exploit
> this current behavior by looking a random window of heap
> memory [...]
Sure, i tried without any success ;-)
That's why i said "potential".
> The next Library revision will allow all string-series! types
> to be passed where a library routine expects string!-- that
> includes such types as image, binary, issue, email, etc.
That's a VERY good news !
> RETURING these types is a whole different issue, though. :-)
Opening the internal Rebol API to make external components might be a
more interesting solution. I remember some discussions about that on
/link, RT's answer was : ok, but wait for the API to be freezed. (or something
like that). Are we closed to that state ?
Best regards,
DocKimbel.
