<?php

/**
 * @file
 * MimeDetect file upload validation sub-module.
 * Validates all file upload for consistency between its real file content and
 * the filename extension.
 */

/**
 * Implements hook_file_validate().
 */
function mimedetect_fileupload_file_validate($file) {
  $errors = array();
  $detected_mime = mimedetect_mime($file);

  if ($file->filemime != $detected_mime) {
    $extension = pathinfo($file->filename, PATHINFO_EXTENSION);
    $errors[] = t('Detected file MIME type (@type) does not match the filename extension (@extension).', array('@type' => $detected_mime, '@extension' => $extension));
  }

  return $errors;
}