const BlacklistAPI = require("../BlacklistAPI"); function checkBlacklist(req, res, next) { BlacklistAPI.includesPackage(req.packageName).then( blacklisted => { // Disallow packages that have been blacklisted. if (blacklisted) { res .status(403) .type("text") .send(`Package "${req.packageName}" is blacklisted`); } else { next(); } }, error => { console.error(error); res.status(500).send({ error: "Unable to fetch the blacklist" }); } ); } module.exports = checkBlacklist;