From: Junio C Hamano <junkio@cox.net>
Date: Sun, 17 Sep 2006 21:21:16 GMT
Subject: Re: [PATCH] gitweb fix validating pg (page) parameter
Message-ID: <7vlkoi2nqr.fsf@assigned-by-dhcp.cox.net>
In-Reply-To: <20060917115245.GA15658@moooo.ath.cx>

Matthias Lederhofer <matled@gmx.net> writes:

> Currently it is possible to give any string ending with a number as
> page.  -1 for example is quite bad (error log shows probably 100
> warnings).
>
> @@ -259,7 +259,7 @@ if (defined $hash_parent_base) {
>  
>  our $page = $cgi->param('pg');
>  if (defined $page) {
> -	if ($page =~ m/[^0-9]$/) {
> +	if ($page =~ m/[^0-9]/) {
>  		die_error(undef, "Invalid page parameter");
>  	}
>  }

Are we complaining if $page is not a validly formatted number
here?  If so why not

	unless ($page =~ /^\d+$/ && 1 <= $page) {
        	barf(...);
	}

???