- /**
- * Do a sanity check to make sure the session is not used from many different IP addresses
- * and store some data for later sanity checks.
- * FIXME remove this once SessionManager is considered stable
- * @private For use in Setup.php only
- * @param Session $session Defaults to the global session.
- */
- public function checkIpLimits( Session $session = null ) {
- $session = $session ?: self::getGlobalSession();
-
- try {
- $ip = $session->getRequest()->getIP();
- } catch ( \MWException $e ) {
- return;
- }
- if ( $ip === '127.0.0.1' || \IP::isConfiguredProxy( $ip ) ) {
- return;
- }
- $now = time();
-
- // Record (and possibly log) that the IP is using the current session.
- // Don't touch the stored data unless we are adding a new IP or re-adding an expired one.
- // This is slightly inaccurate (when an existing IP is seen again, the expiry is not
- // extended) but that shouldn't make much difference and limits the session write frequency
- // to # of IPs / $wgSuspiciousIpExpiry.
- $data = $session->get( 'SessionManager-ip', [] );
- if (
- !isset( $data[$ip] )
- || $data[$ip] < $now
- ) {
- $data[$ip] = time() + $this->config->get( 'SuspiciousIpExpiry' );
- foreach ( $data as $key => $expires ) {
- if ( $expires < $now ) {
- unset( $data[$key] );
- }
- }
- $session->set( 'SessionManager-ip', $data );
-
- $logger = \MediaWiki\Logger\LoggerFactory::getInstance( 'session-ip' );
- $logLevel = count( $data ) >= $this->config->get( 'SuspiciousIpPerSessionLimit' )
- ? LogLevel::WARNING : ( count( $data ) === 1 ? LogLevel::DEBUG : LogLevel::INFO );
- $logger->log(
- $logLevel,
- 'Same session used from {count} IPs',
- [
- 'count' => count( $data ),
- 'ips' => $data,
- 'session' => $session->getId(),
- 'user' => $session->getUser()->getName(),
- 'persistent' => $session->isPersistent(),
- ]
- );
- }
-
- // Now do the same thing globally for the current user.
- // We are using the object cache and assume it is shared between all wikis of a farm,
- // and further assume that the same name belongs to the same user on all wikis. (It's either
- // that or a central ID lookup which would mean an extra SQL query on every request.)
- if ( $session->getUser()->isLoggedIn() ) {
- $userKey = 'SessionManager-ip:' . md5( $session->getUser()->getName() );
- $data = $this->store->get( $userKey ) ?: [];
- if (
- !isset( $data[$ip] )
- || $data[$ip] < $now
- ) {
- $data[$ip] = time() + $this->config->get( 'SuspiciousIpExpiry' );
- foreach ( $data as $key => $expires ) {
- if ( $expires < $now ) {
- unset( $data[$key] );
- }
- }
- $this->store->set( $userKey, $data, $this->config->get( 'SuspiciousIpExpiry' ) );
- $logger = \MediaWiki\Logger\LoggerFactory::getInstance( 'session-ip' );
- $logLevel = count( $data ) >= $this->config->get( 'SuspiciousIpPerUserLimit' )
- ? LogLevel::WARNING : ( count( $data ) === 1 ? LogLevel::DEBUG : LogLevel::INFO );
- $logger->log(
- $logLevel,
- 'Same user had sessions from {count} IPs',
- [
- 'count' => count( $data ),
- 'ips' => $data,
- 'session' => $session->getId(),
- 'user' => $session->getUser()->getName(),
- 'persistent' => $session->isPersistent(),
- ]
- );
- }
- }
- }
-