64 lines
1.8 KiB
JavaScript
64 lines
1.8 KiB
JavaScript
'use strict';
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module.exports = function (opts) {
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var escapeHtml = require('escape-html');
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if (!opts) {
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opts = {};
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}
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if (isNaN(opts.port)) {
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opts.port = 443;
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}
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if (!('body' in opts)) {
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opts.body = "<!-- Hello Mr Developer! We don't serve insecure resources around here."
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+ "\n Please use HTTPS instead. -->";
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}
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opts.body = opts.body.replace(/{{\s+PORT\s+}}/i, opts.port);
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return function (req, res, next) {
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if (req.connection.encrypted
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|| 'https' === req.protocol
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|| (opts.trustProxy && 'https' === req.headers['x-forwarded-proto'])
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) {
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next();
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return;
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}
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var url = req.url;
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var host = req.headers.host || '';
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if (!/:\d+/.test(host) && 443 !== opts.port) {
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// we are using standard port 80, but we aren't using standard port 443
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host += ':80';
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}
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var newLocation = 'https://'
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+ host.replace(/:\d+/, ':' + opts.port) + url
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;
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//var encodedLocation = encodeURI(newLocation);
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var escapedLocation = escapeHtml(newLocation);
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var encodedLocation;
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try {
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encodedLocation = decodeURIComponent(newLocation);
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} catch(e) {
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encodedLocation = "#/error/?error_message=" + e.toString();
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}
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var body = opts.body
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.replace(/{{\s*HTML_URL\s*}}/ig, escapeHtml(encodedLocation))
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.replace(/{{\s*URL\s*}}/ig, escapedLocation)
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.replace(/{{\s*UNSAFE_URL\s*}}/ig, newLocation)
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;
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var metaRedirect = ''
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+ '<html>\n'
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+ '<head>\n'
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//+ ' <style>* { background-color: white; color: white; text-decoration: none; }</style>\n'
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+ ' <META http-equiv="refresh" content="0;URL=\'' + escapedLocation + '\'">\n'
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+ '</head>\n'
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+ '<body>\n' + body + '\n</body>\n'
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+ '</html>\n'
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;
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res.setHeader('Content-Type', 'text/html; charset=utf-8');
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res.end(metaRedirect);
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};
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};
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