public function validateFileIntegrity($attribute, $file, $parameters)
{
if ($file instanceof \Symfony\Component\HttpFoundation\File\UploadedFile) {
switch ($file->getClientMimeType()) {
// For some reason, MP3 files routinely get scanned as octet-streams.
// Attempt to evaluate it as music or a video.
case "application/octet-stream":
case "audio/mpeg":
case "audio/mp3":
case "video/mp4":
case "video/flv":
case "video/webm":
return FileStorage::probe($file);
case "application/x-shockwave-flash":
// This is much slower than exif_imagetype but much more reliable with flash files.
return getimagesize($file->getPathname())['mime'] == "application/x-shockwave-flash";
case "image/x-ms-bmp":
return exif_imagetype($file->getPathname()) == IMAGETYPE_BMP;
case "image/gif":
return exif_imagetype($file->getPathname()) == IMAGETYPE_GIF;
case "image/jpeg":
case "image/jpg":
return exif_imagetype($file->getPathname()) == IMAGETYPE_JPEG;
case "image/png":
return exif_imagetype($file->getPathname()) == IMAGETYPE_PNG;
case "image/svg":
case "image/svg+xml":
try {
$dom = new \DOMDocument();
$dom->Load($file->getPathname());
if ($dom->getElementsByTagName('script')->length > 0) {
return false;
}
return $dom->saveXML() !== false;
} catch (\Exception $error) {
return false;
}
// Things we allow but can't validate.
// Things we allow but can't validate.
case "application/epub+zip":
case "application/pdf":
return true;
default:
return false;
}
}
return false;
dd($value);
}