TypeFile::normalizeMimeType

static function normalizeMimeType($mimeType, $filename)
{
	switch($mimeType)
	{
		case '':
		case 'application/zip':
		case 'application/octet-stream':
			if(self::isDocument($filename))
			{
				return self::getMimeTypeByFilename($filename);
			}
			break;
	}

	return $mimeType;
}