Nmap Development: Re: Ctrl-C annoyance

[alex medvedev <alexm () pycckue org>]

hallo again,

here is a small fix to the patch i posted last week in case somebody would
want to really use it.
it checks if the list of ports is not empty before outputting:

+       if (currenths) /* it may be empty */
+               printportoutput(currenths, &currenths->ports);
+       else    /* daaang... a fast ctrl-c'er... */
+               fprintf(stderr, "nothing yet... be patient...\n");

so, if there exists a really fast ctrl-c'er, she wouldn't be able to make
nmap segfault in the very beginning of its execution when no data had been
collected yet.

the files attached are a cumulative patch.

-alexm
18:24 06/04/2004
PS: pls CC me if you want to contact me as i am not on the list.



On Mon, 29 Mar 2004, alex medvedev wrote:

> hi,
>
> i do not use nmap frequently, nor do i scan very often...
> but when i do i am always surprised why nmap does not report anything when
> Ctrl-C is pressed and simply runs a cleanup.
>
> when scanning slow networks or firewalls that filter everything nmap may
> just sit there for many minutes.
>
> here is a small patch that prints out the ports "collected so far" when
> the Ctrl-C combination is pressed.
>
> when Ctrl-C is pressed 3 times it simply quits nmap.
> i didn't bother to check what i broke, but i made currenths global
> in main.cc
>
> -alexm
> 17:50 29/03/2004

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