PDF corruption

  • neocreo

    (@neocreo)


    9 years, 4 months ago

    I have an interesting problem. I upload a perfectly fine PDF, but when I try to download it again, it comes out corrupted. I can’t even open it in Illustrator or any other PDF-program.

    This is in WordPress 4.5.4… have been hesitant to update since this plugin doesn’t seem to be supported any more.

    Anyone else encountered this problem?

Viewing 3 replies - 1 through 3 (of 3 total)
  • Thread Starter neocreo

    (@neocreo)

    9 years, 4 months ago

    I have mucked about a little bit, and it seem like some work has been done on Github on this fork Github for Washington State

    However, I had to reset the mime-type edit they had done for S3, otherwise I just saw the raw code of the files in the webbrowser.

    Furthermore, I have looked on my server, and the uploaded files are uploaded correctly. When downloaded via FTP, they are uncorrupted. Something must be going on when it translates the file-name to the file in the upload directory.

    I have also tested in uploading a variation of PDF-documents.

    • Adobe illustrator PDF: Works
    • Libreoffice PDF: Works
    • NAP PDF (scanner software): Works

    What doesn’t seem to work is PDFs created by my clients scanner/printer. Those are the only ones being corrupted when I upload them.

    Will keep on posting if I find anything else.

    • This reply was modified 9 years, 4 months ago by neocreo. Reason: forgot link text
    Thread Starter neocreo

    (@neocreo)

    9 years, 4 months ago

    Hmmmm. Apparantly not only PDFs.
    I have managed to recreate this problem with other filetypes.
    ODT – corrupt – from LibreOffice
    PDF – works – from LibreOffice
    DOC – works – from LibreOffice
    DOCX – corrupt – from LibreOffice

    It must be that the plugin has trouble handling certain filetypes. Guess I need to do some scouring here in the support forum again.

    Thread Starter neocreo

    (@neocreo)

    9 years, 4 months ago

    OK, so WOW! I think I solved it.
    I was dabbling with the MIME-types and that didn’t work. So now I looked at WHEN the file is served.

    Row 70 in wp-document-revisions.php
    add_filter( 'template_include', array(&$this, 'serve_file'), 10, 1 );

    It seems like the standard priority of 10 is not good enough in WP +4.5.3.

    add_filter( 'template_include', array(&$this, 'serve_file'), 15, 1 );
    As soon as I changed the priority to HIGHER than 10 it worked. Lower than 10 it caused corruption.

    I hope this information might come in handy for all you other hackers of this dead plugin.

Viewing 3 replies - 1 through 3 (of 3 total)

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