Subject: Re: Censorship From: elawyer@interport.net (Enrique Gili) Date: Tue, 27 Aug 1996 09:53:47 -0400 (EDT)

Sender: owner-online-news@marketplace.com
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Status: RO
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 K Vohra wrote:
>If anyone knows how the internet can be censored from the server ( and I
>need a little detail ) . Please let me know . I'm doing a project on
>internet censorship , and I need to know how to cesnor from the server , and
>if possible how to get around ti . Thanx
>everyone .
>Kameel Ashok Vohra .




I think he means theft. Censorship (or lack thereof) is really a
community standards issue  determined by courts and legislatures. I
guess system administors also have the power to shut down web sites
considered to be too outrageous.

This short hack can be added to your perl scripts in order keep them from
being appropriated. It  will allow you to send back a warning and kill
the  process if the script is running from the wrong domain.




########### script follows ##################################

# declare the domains permitted to use this script
@referers = ('www.yourdomain.com','yourdomain.com','123.45.67.89');

# Check if the domain is valid
if ($ENV{'HTTP_REFERER'}) {
        foreach $referer (@referers) {
                if ($ENV{'HTTP_REFERER'} =~ /$referer/i) {
                        $check_referer = '1';
                        last;
                }
        }
}
else { # browser doesn't support referers, so allow it
        $check_referer = '1';
}

if ($check_referer != 1) {
        print "Content-type: text/html\n\n";
        print "";
        print "
ILLEGAL CGI APPROPRIATION



";
        print "Sorry, this script can only be run from www.yourdomain.com.";
        print "";
        exit;
}

############## end script ##################################


This script was created by Bob Reap other files are maintained at:
http://www.counsel.net/scripts/protect.html.

_______________________________________________________________________________

E Pluribus Internet

Enrique Gili
elawyer@interport.net



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