function download_count_file_download in Download Count 6.2

Same name and namespace in other branches

1. 5 download_count.module \download_count_file_download()
2. 6 download_count.module \download_count_file_download()
3. 7.2 download_count.module \download_count_file_download()

Implementation of hook_file_download().

File

./download_count.module, line 156

Tracks file downloads for files stored in the drupal files table using the private files setting or custom private filefield.

Code

function download_count_file_download($filename, $checkonly = FALSE) {

  // Special use of hook_file_download() - 2nd argument added to indicate that it is not a download, but only an access check.
  if ($checkonly) {
    return;
  }
  global $user;
  $extensions = explode(' ', drupal_strtolower(trim(variable_get('download_count_excluded_file_extensions', 'jpg jpeg gif png'))));
  if (count($extensions)) {
    $pathinfo = pathinfo($filename);
    if (in_array(drupal_strtolower($pathinfo['extension']), $extensions)) {
      return;
    }
  }
  $filepath = file_create_path($filename);

  // NULL: not known
  // FALSE: not accessible
  // TRUE: accessible
  $accessible_file = NULL;

  // check if the file is known by Upload
  $accessible_file = _download_count_is_accessible_by_upload($filepath);
  if ($accessible_file === NULL) {

    // check if the file is known by CCK FileField
    $accessible_file = _download_count_is_accessible_by_filefield($filepath);
  }
  if ($accessible_file === NULL) {

    // not known by any hooks, so we don't care about this file
    return;
  }

  // inaccessible file
  if ($accessible_file === FALSE) {
    watchdog('download_count', 'Failed to download %file', array(
      '%file' => $filename,
    ), WATCHDOG_ERROR);
    return;
  }

  // accessible file
  if ($fileinfo = _download_count_get_file_by_upload($filepath)) {

    // core upload file
    $fid = $fileinfo->fid;
    $nid = $fileinfo->nid;
    $vid = $fileinfo->vid;
  }
  elseif ($fileinfo = _download_count_get_nodes_by_filefield($filepath)) {

    //cck filefield
    $fid = db_result(db_query("SELECT fid FROM {files} WHERE filepath = '%s'", $filepath));
    $node = array_pop($fileinfo);
    $nid = $node->nid;
    $vid = $node->vid;
  }
  $ip = ip_address();
  $referrer = isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : NULL;
  $time = time();
  db_query("INSERT INTO {download_count} (fid, nid, uid, vid, ip_address, referrer, timestamp) VALUES (%d, %d, %d, %d, '%s', '%s', %d)", $fid, $nid, $user->uid, $vid, $ip, $referrer, $time);
  watchdog('download_count', '%file was downloaded', array(
    '%file' => $filename,
  ), WATCHDOG_NOTICE);
  if (module_exists('rules')) {
    rules_invoke_event('download_count_file_download', $pathinfo['basename'], $user, $nid, $ip, $referrer, $time);
  }
}