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POWhere does CGI.pm normally create temporary files?
 

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    <p>On all my Windows servers, except for one machine, when I execute the following code to allocate a temporary files folder:</p> <pre><code>use CGI; my $tmpfile = new CGITempFile(1); print "tmpfile='", $tmpfile-&gt;as_string(), "'\n"; </code></pre> <p>The variable <code>$tmpfile</code> is assigned the value <code>'.\CGItemp1'</code> and this is what I want. But on one of my servers it's incorrectly set to <code>C:\temp\CGItemp1</code>.</p> <p>All the servers are running Windows 2003 Standard Edition, IIS6 and ActivePerl 5.8.8.822 (upgrading to later version of Perl not an option). The result is always the same when running a script from the command line or in IIS as a CGI script (where scriptmap <code>.pl</code> = <code>c:\perl\bin\perl.exe "%s" %s</code>).</p> <p>How I can fix this Perl installation and force it to return '<code>.\CGItemp1</code>' by default?</p> <p>I've even copied the whole Perl folder from one of the working servers to this machine but no joy.</p> <p><a href="https://stackoverflow.com/questions/86175/where-is-cgi-pm-supposed-to-create-temporary-files/86200#86200">@Hometoast:</a></p> <p>I checked the '<code>TMP</code>' and '<code>TEMP</code>' environment variables and also <code>$ENV{TMP}</code> and <code>$ENV{TEMP}</code> and they're identical. </p> <p>From command line they point to the user profile directory, for example: </p> <blockquote> <p><code>C:\DOCUME~1\[USERNAME]\LOCALS~1\Temp\1</code></p> </blockquote> <p>When run under IIS as a CGI script they both point to:</p> <blockquote> <p><code>c:\windows\temp</code></p> </blockquote> <p>In registry key <code>HKEY_USERS/.DEFAULT/Environment</code>, both servers have:</p> <blockquote> <p><code>%USERPROFILE%\Local Settings\Temp</code></p> </blockquote> <p>The ActiveState implementation of <code>CGITempFile()</code> is clearly using an alternative mechanism to determine how it should generate the temporary folder.</p> <p><a href="https://stackoverflow.com/questions/86175/where-is-cgi-pm-supposed-to-create-temporary-files/86993#86993">@Ranguard:</a></p> <p>The real problem is with the <code>CGI.pm</code> module and attachment handling. Whenever a file is uploaded to the site <code>CGI.pm</code> needs to store it somewhere temporary. To do this <code>CGITempFile()</code> is called within <code>CGI.pm</code> to allocate a temporary folder. So unfortunately I can't use <code>File::Temp</code>. Thanks anyway.</p> <p><a href="https://stackoverflow.com/questions/86175/where-is-cgi-pm-supposed-to-create-temporary-files/86874#86874">@Chris:</a></p> <p>That helped a bunch. I did have a quick scan through the <code>CGI.pm</code> source earlier but your suggestion made me go back and look at it more studiously to understand the underlying algorithm. I got things working, but the oddest thing is that there was originally no <code>c:\temp</code> folder on the server. </p> <p>To obtain a temporary fix I created a <code>c:\temp</code> folder and set the relevant permissions for the website's anonymous user account. But because this is a shared box I couldn't leave things that way, even though the temp files were being deleted. To cut a long story short, I renamed the <code>c:\temp</code> folder to something different and magically the correct '<code>.\</code>' folder path was being returned. I also noticed that the customer had enabled FrontPage extensions on the site, which removes write access for the anonymous user account on the website folders, so this permission needed re-applying. I'm still at a loss as to why at the start of this issue <code>CGITempFile()</code> was returning <code>c:\temp</code>, even though that folder didn't exist, and why it magically started working again.</p>
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