Reply to: Pimps getting creative

[Jonesgt]

Not sure what the rules of the challenge were ...

But I modified the code to:

1) include i in the printf statement in function try
2) changed the <= FTBL_LEN to < FTBL_LEN in the error/boundary check section

Call program with 5 as argument i.e. index=5 to invoke goal function which outputs the same address as the pointer stored in tbl[5].

I'll get my coat ...

[Sysman]

I'm also getting a warning at

index = strtol(argv[1], NULL, 10);

"Implicit conversion loses integer precision: 'long' to 'int'"

Maybe they're assuming a 32-bit system?

That wouldn't surprise me.

I did a course on analysing malware last year and every single research paper presented addressed 32 bit only.

Which I thought somewhat odd.

[suityou01]

Progressed onto D now?

Seesh harp.

[darmstadt]

My C coding days are long behind me, so don't judge too harshly.

Progressed onto D now?

[suityou01]

Eh? tbl is an array of function pointers that take one argument. So that's fine. I guess try is okay in C because it's a keyword in C++.

Is there more to it than 5?

I may have mentioned that tbl is an array of function pointers in the post before yours. Why not pop over and take a look?

My C coding days are long behind me, so don't judge too harshly.

[NickFitz]

gcc -m32 is targetting it for a 32 bit system isnt it?

Dunno ¯\_(ツ)_/¯

I went from various assembly languages and Forth directly to JavaScript; I never did anything with C, so I only really know as much of it as I need to work in Objective C. Things like gcc command-line options are not within my ambit

As I'm looking at it in Xcode, the warnings will be from clang, so maybe gcc wouldn't mind that bit.

[sbakoola]

It outputs the Steam Key for Samantha Fox Strip Poker, can I have my GCHQ code breaker job now please ?

[DaveB]

I'm also getting a warning at

index = strtol(argv[1], NULL, 10);

"Implicit conversion loses integer precision: 'long' to 'int'"

Maybe they're assuming a 32-bit system?

gcc -m32 is targetting it for a 32 bit system isnt it?

[NickFitz]

Did you say that you are still on bench ?!!!

I haven't sought to leave it yet

[NickFitz]

I'm also getting a warning at

index = strtol(argv[1], NULL, 10);

"Implicit conversion loses integer precision: 'long' to 'int'"

Maybe they're assuming a 32-bit system?

[DaveB]

BTW, Suity is correct about the printf in the try function: GCC gives a warning that there are more placeholders than variables. Obviously, i should also be mentioned in that call

In the very dim and distant past when I actually coded stuff, I seem to remember that printf will grab the last matching variable off the stack if not told otherwise. So printf(%d) would grab the last integer value from the stack, since that seems to be i as passed to try() then it uses that. Slopping coding but it works.

Of course I could be entirely wonrg / out of date.

[VectraMan]

BTW, Suity is correct about the printf in the try function: GCC gives a warning that there are more placeholders than variables. Obviously, i should also be mentioned in that call

Won't print 0 though, probably not anyway. It'll print whatever is lurking around the stack as an integer.

[FatLazyContractor]

When it's first requested from within the page, the Referer (TBL's everlasting spelling mistake) header check on the Disney server results in a 403 Forbidden response. Once you've looked at it in another tab, your browser has cached it. Thus it never makes the request after that, it just shows the cached copy.

This also explains why Suity reckons it's working for him, as obviously he had to have looked at it to get the URL to post it, so he's seeing the copy his own browser has cached.

The rest of us are left quoting T S Eliot:

What are the roots that clutch, what branches grow
Out of this stony rubbish? Son of man,
You cannot say, or guess, for you know only
A heap of broken images…

Did you say that you are still on bench ?!!!

[NickFitz]

BTW, Suity is correct about the printf in the try function: GCC gives a warning that there are more placeholders than variables. Obviously, i should also be mentioned in that call

[NickFitz]

WTBS.

Although if I grab the image url from the page properties and load it in a seperate tab, it then appears correctly in the thread.

When it's first requested from within the page, the Referer (TBL's everlasting spelling mistake) header check on the Disney server results in a 403 Forbidden response. Once you've looked at it in another tab, your browser has cached it. Thus it never makes the request after that, it just shows the cached copy.

This also explains why Suity reckons it's working for him, as obviously he had to have looked at it to get the URL to post it, so he's seeing the copy his own browser has cached.

The rest of us are left quoting T S Eliot:

What are the roots that clutch, what branches grow
Out of this stony rubbish? Son of man,
You cannot say, or guess, for you know only
A heap of broken images…