function feeds_file_download in Feeds 8.2

Same name and namespace in other branches

1. 8.3 feeds.module \feeds_file_download()
2. 7.2 feeds.module \feeds_file_download()

Implements hook_file_download().

File

./feeds.module, line 1157

Feeds - basic API functions and hook implementations.

Code

function feeds_file_download($uri) {
  $id = db_query("SELECT id FROM {feeds_source} WHERE source = :uri", array(
    ':uri' => $uri,
  ))
    ->fetchField();
  if (!$id) {

    // File is not associated with a feed.
    return;
  }

  // Get the file record based on the URI. If not in the database just return.
  $files = file_load_multiple(array(), array(
    'uri' => $uri,
  ));
  foreach ($files as $item) {

    // Since some database servers sometimes use a case-insensitive comparison
    // by default, double check that the filename is an exact match.
    if ($item->uri === $uri) {
      $file = $item;
      break;
    }
  }
  if (!isset($file)) {
    return;
  }

  // Check if this file belongs to Feeds.
  $usage_list = file_usage()
    ->listUsage($file);
  if (!isset($usage_list['feeds'])) {
    return;
  }
  if (!feeds_access('import', $id)) {

    // User does not have permission to import this feed.
    return -1;
  }

  // Return file headers.
  return file_get_content_headers($file);
}