Date: Mon, 16 Aug 2010 10:00:31 +0200 From: Frederic Culot <frederic@culot.org> To: perryh@pluto.rain.com Cc: freebsd-ports@freebsd.org Subject: Re: Feedback on wanted port: obskurator Message-ID: <20100816080031.GB15226@culot.org> In-Reply-To: <4c6896d4.3pdxwnrQ856zJXYK%perryh@pluto.rain.com> References: <20100815075812.GA15226@culot.org> <4c6896d4.3pdxwnrQ856zJXYK%perryh@pluto.rain.com>
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Thanks for your feedback but unfortunately the result is the same even if I
provide the prototype for printf in the source file.
Frederic
> Frederic Culot <frederic@culot.org> wrote:
>
> > Following the links on the ports tasks wiki page I found
> > 'obskurator' to be a wanted port ... so I gave it a try
> > and report about it here.
> >
> > obskurator is supposed to obfuscate source code by changing
> > variable names ...
> > I believe the software itself is unusable and should not be
> > added to the ports tree in its current state. Indeed, I wrote a
> > simple code to test the resulting obfuscated program generated
> > by obskurator and it would not compile.
> >
> > Here is my test code:
> >
> > -----
> > #include <stdio.h>
> >
> > int my_int1;
> >
> > int
> > main (void)
> > {
> > char *my_txt1 = "Hello world";
> >
> > printf ("first var: %d\n", my_int1);
> > printf ("second var: %s\n", my_txt1);
> >
> > return 0;
> > }
> > -----
> >
> > and obskurator transformed it into the following:
> >
> > -----
> > #include <stdio.h>
> >
> > int my_int1;
> >
> > int
> > main (void)
> > {
> > char *x1 = "Hello world";
> >
> > x2 ("first var: %d\n", my_int1);
> > x2 ("second var: %s\n", x1);
> >
> > return 0;
> > }
> > -----
> >
> > That is obskurator believed printf(3) was a user-defined variable
> > and replaced it with 'x2', which makes the resulting program
> > impossible to compile.
>
> Does it by any chance work properly if you provide the prototype
> for printf in the source file, instead of depending on the one
> that should be provided by the #included header file? If it does,
> a possible w/a might be to run the program through CPP first, and
> then through obskurator.
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