redirect-https.js/index.js

54 lines
1.5 KiB
JavaScript

'use strict';
module.exports = function (opts) {
var escapeHtml = require('escape-html');
if (!opts) {
opts = {};
}
if (isNaN(opts.port)) {
opts.port = 443;
}
if (!('body' in opts)) {
opts.body = "<!-- Hello Mr Developer! We don't serve insecure resources around here."
+ "\n Please use HTTPS instead. -->";
}
opts.body = opts.body.replace(/{{\s+PORT\s+}}/i, opts.port);
return function (req, res, next) {
if (req.connection.encrypted
|| 'https' === req.protocol
|| (opts.trustProxy && 'https' === req.headers['x-forwarded-proto'])
) {
next();
return;
}
var url = req.url;
var host = req.headers.host || '';
var newLocation = 'https://'
+ host.replace(/:\d+/, ':' + opts.port) + url
;
//var encodedLocation = encodeURI(newLocation);
var escapedLocation = escapeHtml(newLocation);
var body = opts.body
.replace(/{{\s*HTML_URL\s*}}/ig, escapeHtml(decodeURIComponent(newLocation)))
.replace(/{{\s*URL\s*}}/ig, escapedLocation)
.replace(/{{\s*UNSAFE_URL\s*}}/ig, newLocation)
;
var metaRedirect = ''
+ '<html>\n'
+ '<head>\n'
//+ ' <style>* { background-color: white; color: white; text-decoration: none; }</style>\n'
+ ' <META http-equiv="refresh" content="0;URL=\'' + escapedLocation + '\'">\n'
+ '</head>\n'
+ '<body">\n' + body + '\n</body>\n'
+ '</html>\n'
;
res.setHeader('Content-Type', 'text/html; charset=utf-8');
res.end(metaRedirect);
};
};