Laravel 5.4 UploadedFile::getMimeType returns incorrect mimetype

Asked by: SheperdOfFire

I have a valid .eps file which I want to upload. My validator looks like this:

        // $file is an instance of UploadedFile
        $validator = \Validator::make( [
            'file' => $file
        ], [
            'file' => 'required|mimes:jpg,jpeg,png,tiff,psd,ai,eps,pdf'
        ] );
\dd($validator->fails());
        if ($validator->fails() ){
            ...
        }

$validator->fail() evaluates to true at the moment, causing my script to not upload the file. Because all other file extensions are working, I think this is because laravel doesn't understand the eps file type. Therefore I'd like to implement the eps mime types myself but I don't know how to do this.

The file I try to upload is named 2365 MD8300_PC_03.eps and has application/octet-stream as mimetype.

Any ideas?

Update:

When I dd $file, it's output is this:

UploadedFile {#410 ▼
  -test: false
  -originalName: "2365 MD8300_PC_03.eps"
  -mimeType: "application/postscript"
  -size: 310578
  -error: 0
  #hashName: null
  path: "/private/var/tmp"
  filename: "phpy3tsMr"
  basename: "phpy3tsMr"
  pathname: "/private/var/tmp/phpy3tsMr"
  extension: ""
  realPath: "/private/var/tmp/phpy3tsMr"
  aTime: 2017-07-11 12:08:52
  mTime: 2017-07-11 12:08:50
  cTime: 2017-07-11 12:08:50
  inode: 21487530
  size: 310578
  perms: 0100600
  owner: 504
  group: 0
  type: "file"
  writable: true
  readable: true
  executable: false
  file: true
  dir: false
  link: false
}

So the actual mime type is correct, it's just that $file->getMimeType() returns an incorrect value of application/octet-stream.

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