CODEWITHSUNDEEP
mime-typesphp-5.3fileinfo
Jorre
Jorre

Reputation: 17581

finfo returns wrong MIME type on some JS files (text/x-c++)?

I have php 5.3 and use finfo to determine the MIME type of uploaded files. For some javascript files however, I get mime type text/x-c++, which is of course incorrect.

Does anyone have an idea why this happens sometimes. Because of this, I cannot allow uploads of JS-files in a way based on checking the mime type.

The contents of a file that returns this mime type is:

(function($) {

$(document).ready(function() {


        $(function() {
        // OPACITY OF BUTTON SET TO 50%
        $(".fade").css("opacity","1.0");

        // ON MOUSE OVER
        $(".fade").hover(function () {

        // SET OPACITY TO 100%
        $(this).stop().animate({
        opacity: 0.7
        }, "quick");
        },

        // ON MOUSE OUT
        function () {

        // SET OPACITY BACK TO 50%
        $(this).stop().animate({
        opacity: 1.0
        }, "quick");
        });
    });


// End of closure & jquery wraping
});
})(jQuery);

Upvotes: 0

Views: 1778

Answers (1)

Matthew
Matthew

Reputation: 25763

I ran into the same issue the other day (with PDF files being uploaded as application/data), as far as I know this is a browser issue and not a server side one, as I had two browsers upload the exact same PDF, one said application/PDF and the other application/data, my only suggestion to you use since checking the content type is somewhat flaky, you should do your own type checking.

For your case, I would just ensure that the mime type starts with "text/", and check the file extension of the uploaded file. If you're particularlly brave you may write some code that does a syntax check of the uploaded file, but that's probably going to be a lot more work than you want to do.

Upvotes: 1

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