Greetings, Well, I spent last weekend creating an all encompassing DNS query perl script. Creation & testing was done from the CLI. Everything worked as intended. So today I set out to convert it to a web based form. But apparently my train of thought decoupled a few cars somewhere along the line. Because no matter how hard I tried, I couldn't generate a form that either 1) posted the input variable, or 2) didn't make perl squeal bloody murder. WHat I had hoped to accomplish today, was to incorporate a form field inline (within the script itself), using the POST method (to help thwart users embedding a query string from within their own pages, against mine). The script is quite large, but here's a snippet, that should reveal my intent: 
#!/usr/bin/perl -w

use strict;
use Net::DNS;
my $dns = new Net::DNS::Resolver;

for my $domain( @ARGV ) {
    my $mx = $dns->query( $domain, 'MX' );

print "content-type:text/html; charset=utf-8\n\n";
    print "$domain:\n\n";
    foreach my $rr ($mx->answer) {
        print "<br />", $rr->exchange, ' [<b>', $rr->preference, "</b>
+]\n";
    }
}

[download]
using the above in a web page as:
http://mydomain.tld/dnsdig.cgi?google.com
produces the intended output. But, any incarnation of: 
# replace for my $domain( @ARGV ) {
# with
if($domain ne "") {
print "<form action=\"dnsdig.cgi\" method=\"post\">
<input name=\"domain\" type=\"text\" value=\"\" />
<input type=\"submit\" value=\"Get MX\" />
</form>";
} else {
    my $mx = $dns->query( $domain, 'MX' );

print "content-type:text/html; charset=utf-8\n\n";
    print "$domain:\n\n";
    foreach my $rr ($mx->answer) {
        print "<br />", $rr->exchange, ' [<b>', $rr->preference, "</b>
+]\n";
    }
}

[download]
fails! :(
YES. I know $domain is replaced with (@ARGV), and this is truly trivial, but for the life of me, I'm stuck. Please help.
Thank you for all of your time and consideration.
--Chris 
#!/usr/bin/perl -Tw
use perl::always;
my $perl_version = "5.12.4";
print $perl_version;

In reply to How to convert an @ARGV to form based input? by taint

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