'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 = "";
}
opts.body = opts.body.replace(/{{\s+PORT\s+}}/ig, 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.originalUrl || req.url);
var host = req.headers.host || '';
if (!/:\d+/.test(host) && 443 !== opts.port) {
// we are using standard port 80, but we aren't using standard port 443
host += ':80';
}
var newLocation = 'https://'
+ host.replace(/:\d+/, ':' + opts.port) + url
;
//var encodedLocation = encodeURI(newLocation);
var escapedLocation = escapeHtml(newLocation);
var decodedLocation;
try {
decodedLocation = decodeURIComponent(newLocation);
} catch(e) {
decodedLocation = newLocation; // "#/error/?error_message=" + e.toString();
}
var body = opts.body
.replace(/{{\s*HTML_URL\s*}}/ig, escapeHtml(decodedLocation))
.replace(/{{\s*URL\s*}}/ig, escapedLocation)
.replace(/{{\s*UNSAFE_URL\s*}}/ig, newLocation)
;
var metaRedirect = ''
+ '\n'
+ '\n'
//+ ' \n'
+ ' \n'
+ '\n'
+ '\n' + body + '\n\n'
+ '\n'
;
if (opts.headerRedirect) {
res.statusCode = opts.headerRedirect.responseCode || 302;
res.setHeader('Location', newLocation);
}
res.setHeader('Content-Type', 'text/html; charset=utf-8');
res.end(metaRedirect);
};
};