Hello,

I'm having trouble with an assignment, the teacher required me to create a login session program in one single CGI program, basically one big if else program. Firstly I have this bit of code at the top of the page:

# Check cookie and initialise a guest session if need be
$sid = $q->cookie("CGISESSID") || undef;
$session = new CGI::Session("driver:File",$sid,{'Directory'=>"./tmp/se
+ssions"});
print $session->header();

[download]

Which basically creates a guest session, even though I'd prefer no session be created unless the user logs in, but regardless it works.

Later on I have another bit of code within the same document to display a picture:

print "Content-disposition: attachment; filename=$qstring\n";
print "Content-type: image/jpg\n\n";
open IMG, "<restricted/$qstring";
flock IMG, 1;
while (sysread(IMG, $buf, 512) > 0) {
        print $buf;
}
flock IMG, 8;
close IMG;

[download]

However all this does when it's ("Executed") is display the binary file simply because the header is already set from the session, thus it will never open the image.

Is there anyway I can deal with this situation? perhaps change the header (if it's possible) or perhaps a way to check if a session exists without creating a header?

Thank you!

In reply to Perl session and headers by Trigr

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