My point being that this is a specific case where data is output to the browser, hence CGI. Of course, there's also the issue of templating systems, so valid point about DBI storage as well.

Perhaps then, an extension to DBI that wouldn't let you store tainted data would be useful, along with some pre-defined methods to untaint data - eg, (1) strip all html markup, (2) strip all html markup except for specified tags (a la HTML::TagFilter), (3) escape all html markup. 

use DBI;
use DBI::Taint;

[download]

Hmm, still only a germ of an idea...

cLive ;-)

In reply to Re: Re: writing a "CGI::Taint" module by cLive ;-)
in thread writing a "CGI::Taint" module by cLive ;-)

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.