URLs and email addresses are never "unsafe" when handled safely. So if you're looking for Email::Valid, it's done.

And why you would be passing a date, time, or name near a shell. I'm still confused. That's still thinking from the wrong end.

As for your DROP TABLE example, if you are using placeholders correctly, that value wouldn't matter.

So, I'm still not convinced that there needs to be a standard "untainting" library. When the data is handled properly, we don't need to "match" "safe" data. Period.

-- Randal L. Schwartz, Perl hacker

In reply to •Re: Re^2: Untainting safely. (b0iler proofing?) by merlyn
in thread Untainting safely. (b0iler proofing?) by BrowserUk

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.