user_id = $user_id;
}
/**
* Retrieves a session manager instance for a user.
*
* This method contains a {@see 'session_token_manager'} filter, allowing a plugin to swap out
* the session manager for a subclass of `WP_Session_Tokens`.
*
* @since 4.0.0
*
* @param int $user_id User whose session to manage.
* @return WP_Session_Tokens The session object, which is by default an instance of
* the `WP_User_Meta_Session_Tokens` class.
*/
final public static function get_instance( $user_id ) {
/**
* Filters the class name for the session token manager.
*
* @since 4.0.0
*
* @param string $session Name of class to use as the manager.
* Default 'WP_User_Meta_Session_Tokens'.
*/
$manager = apply_filters( 'session_token_manager', 'WP_User_Meta_Session_Tokens' );
return new $manager( $user_id );
}
/**
* Hashes the given session token for storage.
*
* @since 4.0.0
*
* @param string $token Session token to hash.
* @return string A hash of the session token (a verifier).
*/
private function hash_token( $token ) {
// If ext/hash is not present, use sha1() instead.
if ( function_exists( 'hash' ) ) {
return hash( 'sha256', $token );
} else {
return sha1( $token );
}
}
/**
* Retrieves a user's session for the given token.
*
* @since 4.0.0
*
* @param string $token Session token.
* @return array|null The session, or null if it does not exist.
*/
final public function get( $token ) {
$verifier = $this->hash_token( $token );
return $this->get_session( $verifier );
}
/**
* Validates the given session token for authenticity and validity.
*
* Checks that the given token is present and hasn't expired.
*
* @since 4.0.0
*
* @param string $token Token to verify.
* @return bool Whether the token is valid for the user.
*/
final public function verify( $token ) {
$verifier = $this->hash_token( $token );
return (bool) $this->get_session( $verifier );
}
/**
* Generates a session token and attaches session information to it.
*
* A session token is a long, random string. It is used in a cookie
* to link that cookie to an expiration time and to ensure the cookie
* becomes invalidated when the user logs out.
*
* This function generates a token and stores it with the associated
* expiration time (and potentially other session information via the
* {@see 'attach_session_information'} filter).
*
* @since 4.0.0
*
* @param int $expiration Session expiration timestamp.
* @return string Session token.
*/
final public function create( $expiration ) {
/**
* Filters the information attached to the newly created session.
*
* Can be used to attach