The problem is not with your code, it is that Apache::Session::File does not work in Taint mode.

The problem is that the session ID is stored along with the session itself. When you go to delete the session, it first loads the session from disk and unserializes it. This overwrites the session ID you passed it with the one it found in the file (they are both identical so it shouldn't matter). The problem is, the session ID is now tainted.

A quick fix for this is for you to untaint the session ID yourself after the session has been unserialized. Put the following two lines after you tie the session:

$session{_session_id} =~ /^([a-zA-Z0-9]+)$/;
$session{_session_id} = $1;

[download]

This probably should be fixed in Apache::Session itself as I am sure other people will run into it.

By the way, you really shouldn't be using Apache::Session::File anyway for performance reasons. At least use Apache::Session::DB_File which most likely doesn't suffer from this taint problem and will be much quicker.

In reply to Re: Cleaning up sessions created by Apache::Session::File when logging out of a CGI application by cees
in thread Cleaning up sessions created by Apache::Session::File when logging out of a CGI application by Joey The Saint

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.