https://bugzilla.wikimedia.org/show_bug.cgi?id=18858

           Summary: Can't open documents from Internet Explorer (IE) address
                    bar thru img_auth.php
           Product: MediaWiki
           Version: 1.13.1
          Platform: PC
        OS/Version: Windows Vista
            Status: NEW
          Severity: minor
          Priority: Normal
         Component: Images and files
        AssignedTo: [email protected]
        ReportedBy: [email protected]


If your wiki is configured to use img_auth.php for access control, and you have
documents like PDFs, Microsoft Word, PowerPoint, or Excel uploaded to your
wiki, there is some weird interaction that prevents these documents from being
opened directly from Internet Explorer's address bar. If you copy/paste the URL
to the uploaded document into the address bar and press Enter, it will pop up
an error saying it couldn't access the document. (The exact message varies
depending on what document type you try to load, and it isn't always
consistent. Word will often add an additional popup saying that it died and a
log of the error is being produced.)

Problem was reproduced on two different wiki servers running MediaWiki 1.13.1.
Problem happens with both IE 6.0 on Windows XP and with IE 7 on Vista.

Problem does not happen with Firefox.
Problem does not happen if you click on a link to get to the exact same URL,
such as going to the Image: page first then clicking on that link. Only when
the URL is entered in the address bar.
Problem does not happen if you put the same document on the server where you
can access it without going through img_auth.php.
Problem does not happen with normal .txt files and image files, only with
document types like PDF and Microsoft document types.

Problem is consistent -- happens every time.

STEPS TO REPRODUCE:

1. Configure wiki to use img_auth.php for accessing uploads
2. Upload a PDF or Word document
3. Paste the URL of the uploaded document (not the Image: page) into IE and try
to access it.


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