CODEWITHSUNDEEP
phpvalidationsymfonylatexmime-types
Milos Cuculovic
Milos Cuculovic

Reputation: 20223

Symfony2 - How to validate if the uploaded file is a tex file (LaTex)

I have a file upload function in my Symfony2 project and I would like to validate that the uploaded file is a .tex file format => LaTex file. For text/html, I am using:

$metadata->addPropertyConstraint('file', new Assert\File(array(
            'maxSize' => '100000k',
            'mimeTypes' => array("text/html"),
            'mimeTypesMessage' => 'Please upload a valid HTM/HTML File',
    )));

I am trying:

 $metadata->addPropertyConstraint('file', new Assert\File(array(
            'maxSize' => '100000k',
            'mimeTypes' => array(
                   'text/html',
                    'application/x-tex',
                    'application/x-latex'
             ),
            'mimeTypesMessage' => 'Please upload a valid HTM/HTML/TEX File',
    )));

But as soon as I am uploading a .tex file, I am getting the message:

Please upload a valid HTM/HTML/TEX File.

How can I add Tex file also here? Thank you.

Upvotes: 7

Views: 2084

Answers (3)

Jovan Perovic
Jovan Perovic

Reputation: 20201

I think that the same principles of image validation can be applied here. It's unreliable to trust mime-type since user could plant php executable within image/jpeg.

For the images this can be verified by using getimagesize() function. As for the LaTeX you would need some 3rd-party lib what will try to open uploaded file and throw the exception on error (invalid file format, invalid expression, etc...).

Maybe this one: PHPLatex?

Also, which mime-type did you get when you tried uploading file? (@Ahmed's idea)

Upvotes: 4

Spangen
Spangen

Reputation: 4730

Unless the submitting client 'knows' that tex files are registered as application/x-tex I believe that the client won't sent then as such.

Can you search for the \documentclass directive within the stream? Alternatively if you are in control of the client machines, e.g. at work or university, can you get the mime types registered on them?

Upvotes: 2

Ahmed Siouani
Ahmed Siouani

Reputation: 13891

I think you've to use the application/x-latex mime-type.

Upvotes: 0

Related Questions