1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | 1× 4× 4× 4× 2× 2× 2× 2× | module.exports = function MimeSniffingConstructor(opts) { opts = opts || {}; return function mimeSniffing(req, res, next) { // self-awareness if (req._esecurity_mimesniffing) return next(); req._esecurity_mimesniffing = true; res.set('X-Content-Type-Options', 'nosniff'); return next(); }; }; |