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Re: [help-gengetopt] Input validation


From: Lorenzo Bettini
Subject: Re: [help-gengetopt] Input validation
Date: Thu, 22 Dec 2005 19:20:37 +0100
User-agent: Debian Thunderbird 1.0.7 (X11/20051017)

Michael Hagemann wrote:
Hi all,

Ben Asselstine wrote:

The *end parameter to strto[u]l needs to be checked like this:

[...]


I would definitely opt for further checking (for all types actually). The stricter, the better. The earlier an error is caught, the better.

Maybe I can look into this next week, if nobody else is faster... ;-)

have I been faster? ;-)

I've put up a fix using Ben's template:

http://rap.dsi.unifi.it/~bettini/gengetopt-2.15rc1.tar.gz

now the generated code for a numeric option is as follows:

args_info->int_arg = strtol (optarg, &stop_char, 0);
if (!(stop_char && *stop_char == '\0')) {
  fprintf(stderr, "%s: invalid numeric value: %s\n", argv[0], optarg);
  goto failure;
}

and this should do, shouldn't it?

I look forward to hearing comments.
I'd like to make 2.15 release these days!

thanks everyone
and Happy XMas
        Lorenzo

--
+-----------------------------------------------------+
|  Lorenzo Bettini          ICQ# lbetto, 16080134     |
|  PhD in Computer Science                            |
|  Dip. Sistemi e Informatica, Univ. di Firenze       |
|  Florence - Italy        (GNU/Linux User # 158233)  |
|  Home Page        : http://www.lorenzobettini.it    |
|  http://music.dsi.unifi.it         XKlaim language  |
|  http://www.purplesucker.com Deep Purple Cover Band |
|  http://www.gnu.org/software/src-highlite           |
|  http://www.gnu.org/software/gengetopt              |
|  http://www.lorenzobettini.it/software/gengen       |
|  http://www.lorenzobettini.it/software/doublecpp    |
+-----------------------------------------------------+




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