There are few, if any, pathetic questions (that's a reference to the original title, just in case someone changed it). Here's a short and terribly incomplete answer to your question:

#!/usr/bin/perl -wT
use strict;
use CGI qw/:standard/;

# grab the data
my $tainted_field1 = param( 'field1' ) || '';
my $tainted_field2 = param( 'field2' ) || '';

# untaint the data
my ( $field1 ) = ( $tainted_field1 =~ /^([\w\s]+)$/ );
my ( $field2 ) = ( $tainted_field2 =~ /^([\w\s]+)$/ );

# do as you will...

[download]

I realize that much of what I wrote probably looks like line noise. Here's a stripped down (but less secure) version to give you the basics:

#!/usr/bin/perl -w
use strict;
use CGI qw/:standard/;

my $field1 = param( 'field1' );
my $field2 = param( 'field2' );

[download]

I realize that the second version seems a bit easier to use, but it does have some problems. See perlsec for details. I also have an online CGI course that I am writing and it can fill you in on a lot of background. Unfortunately, the section that you will most want (Lesson Four, part two) has not yet been written due to excessive 12 hour work days on my part :)

Cheers,
Ovid

Vote for paco!

Join the Perlmonks Setiathome Group or just click on the the link and check out our stats.

In reply to (Ovid) Re: Pathetic Question by Ovid
in thread How to read parameters passed from a HTML page? by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.