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<?php /** * Session API: WP_User_Meta_Session_Tokens class * * @package WordPress * @subpackage Session * @since 4.7.0 / /* * Meta-based user sessions token manager. * * @since 4.0.0 * * @see WP_Session_Tokens / class WP_User_Meta_Session_Tokens extends WP_Session_Tokens { /* * Retrieves all sessions of the user. * * @since 4.0.0 * * @return array Sessions of the user. / protected function get_sessions() { $sessions = get_user_meta( $this->user_id, 'session_tokens', true ); if ( ! is_array( $sessions ) ) { return array(); } $sessions = array_map( array( $this, 'prepare_session' ), $sessions ); return array_filter( $sessions, array( $this, 'is_still_valid' ) ); } /* * Converts an expiration to an array of session information. * * @param mixed $session Session or expiration. * @return array Session. / protected function prepare_session( $session ) { if ( is_int( $session ) ) { return array( 'expiration' => $session ); } return $session; } /* * Retrieves a session based on its verifier (token hash). * * @since 4.0.0 * * @param string $verifier Verifier for the session to retrieve. * @return array\|null The session, or null if it does not exist / protected function get_session( $verifier ) { $sessions = $this->get_sessions(); if ( isset( $sessions[ $verifier ] ) ) { return $sessions[ $verifier ]; } return null; } /* * Updates a session based on its verifier (token hash). * * @since 4.0.0 * * @param string $verifier Verifier for the session to update. * @param array $session Optional. Session. Omitting this argument destroys the session. / protected function update_session( $verifier, $session = null ) { $sessions = $this->get_sessions(); if ( $session ) { $sessions[ $verifier ] = $session; } else { unset( $sessions[ $verifier ] ); } $this->update_sessions( $sessions ); } /* * Updates the user's sessions in the usermeta table. * * @since 4.0.0 * * @param array $sessions Sessions. / protected function update_sessions( $sessions ) { if ( $sessions ) { update_user_meta( $this->user_id, 'session_tokens', $sessions ); } else { delete_user_meta( $this->user_id, 'session_tokens' ); } } /* * Destroys all sessions for this user, except the single session with the given verifier. * * @since 4.0.0 * * @param string $verifier Verifier of the session to keep. / protected function destroy_other_sessions( $verifier ) { $session = $this->get_session( $verifier ); $this->update_sessions( array( $verifier => $session ) ); } /* * Destroys all session tokens for the user. * * @since 4.0.0 / protected function destroy_all_sessions() { $this->update_sessions( array() ); } /* * Destroys all sessions for all users. * * @since 4.0.0 */ public static function drop_sessions() { delete_metadata( 'user', 0, 'session_tokens', false, true ); } }