Ovid's advice:
Turn on taint mode (-T switch. See perlsec)
is generally sound advice. However, if your cgi environment involves running under mod_perl, you will find this causes a warning message. Basically, you cannot enable taint mode under mod_perl with the -T switch on the shebank line.

From the mod_perl doco:

Since the -T switch doesn't have an equivalent perl variable, mod_perl provides the PerlTaintCheck directive to turn on taint checks. In httpd.conf, enable this mode with:

PerlTaintCheck On

Now any code compiled inside httpd will be taint checked.

If you use the -T switch, Perl will warn you that you should use the PerlTaintCheck configuration directive and will otherwise ignore it.

Now, since you are running under an enviroment that is outside your control, you may wish to check whether mod_perl is in use, and if so, whether the PerlTaintCheck directive is in place.

In reply to Re: (Ovid) Re: Beginning Perl and Forms - -w Swtich by Maclir
in thread Beginning Perl and Forms by Stinger

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.