Automattic / jetpack

				return $suppress_errors ? false : new WP_Error( 'no_token_for_user', sprintf( __( 'No token for user %d', 'jetpack' ), $user_id ) );

			}

			$user_token_chunks = explode( '.', $user_tokens[ $user_id ] );

			if ( empty( $user_token_chunks[1] ) || empty( $user_token_chunks[2] ) ) {

				// translators: %s is the user ID.

				return $suppress_errors ? false : new WP_Error( 'token_malformed', sprintf( __( 'Token for user %d is malformed', 'jetpack' ), $user_id ) );

			}

			if ( $user_token_chunks[2] !== (string) $user_id ) {

				// translators: %1$d is the ID of the requested user. %2$d is the user ID found in the token.

				return $suppress_errors ? false : new WP_Error( 'user_id_mismatch', sprintf( __( 'Requesting user_id %1$d does not match token user_id %2$d', 'jetpack' ), $user_id, $user_token_chunks[2] ) );

			// Try to log in with the username and password.

		}

		$retval = $user;

		if ( empty( $_POST['_vptrue'] ) || !in_array( $_POST['_vptrue'], $this->get_login_tokens(), true ) )

			$retval = new WP_Error( 'invalid_token', __( 'Invalid token. Please try to log in again.' ) );

		return $retval;

	}