function autologout_cron in Automated Logout 6.4

Implements hook_cron().

File

./autologout.module, line 469

Used to automagically log out a user after a preset time.

Code

function autologout_cron() {
  $timeout = variable_get('autologout_timeout', 1800);
  $timeout_padding = variable_get('autologout_padding', 10);

  // Get sessions, oldest first and exclude any anonymous or newer
  // than the timeout.
  $sess_query = "SELECT sid, uid, timestamp\n    FROM {sessions}\n    WHERE uid > 0 AND (%d - timestamp) >= %d\n    ORDER BY sid";
  $sessions = db_query_range($sess_query, time(), $timeout + $timeout_padding, 0, AUTOLOGOUT_CRON_NUM);
  while ($session = db_fetch_object($sessions)) {

    // Create a fake account class.
    $account = new stdClass();
    $account->roles = array();
    $roles_query = "SELECT rid FROM {users_roles} ur WHERE ur.uid = %d";
    $roles = db_query($roles_query, $session->uid);
    while ($role = db_fetch_object($roles)) {

      // _autologout_logout_role() doesn't care about the name of the role so
      // save a join by using the rid twice here.
      $account->roles[$role->rid] = $role->rid;
    }

    // Does the session user have a role that should be
    // auto-logged out?
    //
    // Note: we can't use the session text field because it would mean
    // switching sessions (tweaky) and even then it may not work due to
    // Suhosin encrypting the data.
    if (!_autologout_logout_role($account)) {
      continue;
    }

    // If the session should be auto-logged out, destroy the session.
    $session_time = time() - $session->timestamp;
    if ($session_time >= $timeout + $timeout_padding) {
      db_query("DELETE FROM {sessions} WHERE sid = '%s'", $session->sid);
      $account->name = db_result(db_query("SELECT name FROM {users} WHERE uid = %d", $session->uid));
      if (variable_get('autologout_use_watchdog', FALSE)) {
        watchdog('user', 'Session automatically closed for %name by autologout (cron).', array(
          '%name' => $account->name,
        ));
      }
    }
  }
}