function session_limit_invoke_session_limit in Session Limit 6.2

Same name and namespace in other branches

1. 6 session_limit.module \session_limit_invoke_session_limit()
2. 7.2 session_limit.module \session_limit_invoke_session_limit()

Limit a users access to the sites based on the current session.

Parameters

string $session: The session id string which identifies the current session.

string $op: The action which caused the session limitation event. This is either 'collision' or 'disconnect'.

Return value

array The results of all hook_session_limit functions. Note that in a collision event, a Drupal goto is executed so this function does not return.

2 calls to session_limit_invoke_session_limit()

session_limit_init in ./session_limit.module

Implementation of hook_init().

session_limit_page_submit in ./session_limit.module

Handler for submissions from session_limit_page().

File

./session_limit.module, line 548

Limits multiple sessions per user.

Code

function session_limit_invoke_session_limit($session, $op) {
  $return = array();

  // Execute the hook_session_limit().
  foreach (module_implements('session_limit') as $name) {
    $function = $name . '_session_limit';
    $result = $function($session, $op);
    if (isset($result) && is_array($result)) {
      $return = array_merge($return, $result);
    }
    elseif (isset($result)) {
      $return[] = $result;
    }
  }

  // In the event of a collision, close oldest sessions.
  if ($op == 'collision') {
    if (variable_get('session_limit_behaviour', SESSION_LIMIT_DO_NOTHING) == SESSION_LIMIT_DROP) {
      global $user;

      // Get the number of sessions that should be removed.
      $count = db_result(db_query("SELECT COUNT(DISTINCT(sid)) FROM {sessions} WHERE uid = %d", $user->uid));
      $limit = $count - session_limit_user_max_sessions($user);
      if ($limit > 0) {
        $result = db_query_range("SELECT DISTINCT(sid) as sid FROM {sessions} WHERE uid = %d ORDER BY timestamp", $user->uid, 0, $limit);
        while ($sids = db_fetch_object($result)) {
          session_limit_invoke_session_limit($sids->sid, 'disconnect');
        }
      }
    }
    else {
      drupal_goto('session/limit');
    }
  }
  return $return;
}