greenlock.js/lib/middleware.js

69 lines
2.1 KiB
JavaScript

'use strict';
var utils = require('./utils');
function _log(debug) {
if (debug) {
var args = Array.prototype.slice.call(arguments);
args.shift();
args.unshift("[le/lib/middleware.js]");
console.log.apply(console, args);
}
}
module.exports.create = function (le) {
if (!le.challenges['http-01'] || !le.challenges['http-01'].get) {
throw new Error("middleware requires challenge plugin with get method");
}
var log = le.log || _log;
log(le.debug, "created middleware");
return function (_app) {
if (_app && 'function' !== typeof _app) {
throw new Error("use le.middleware() or le.middleware(function (req, res) {})");
}
var prefix = le.acmeChallengePrefix || '/.well-known/acme-challenge/';
return function (req, res, next) {
if (0 !== req.url.indexOf(prefix)) {
log(le.debug, "no match, skipping middleware");
if ('function' === typeof _app) {
_app(req, res, next);
}
else if ('function' === typeof next) {
next();
}
else {
res.statusCode = 500;
res.end("[500] Developer Error: app.use('/', le.middleware()) or le.middleware(app)");
}
return;
}
log(le.debug, "this must be tinder, 'cuz it's a match!");
var token = req.url.slice(prefix.length);
var hostname = req.hostname || (req.headers.host || '').toLowerCase().replace(/:.*/, '');
log(le.debug, "hostname", hostname, "token", token);
var copy = utils.merge({ domains: [ hostname ] }, le);
copy = utils.tplCopy(copy);
// TODO tpl copy?
// TODO need to restore challengeType
le.challenges['http-01'].get(copy, hostname, token, function (err, secret) {
if (err || !token) {
res.statusCode = 404;
res.setHeader('Content-Type', 'application/json; charset=utf-8');
res.end('{ "error": { "message": "Error: These aren\'t the tokens you\'re looking for. Move along." } }');
return;
}
res.setHeader('Content-Type', 'text/plain; charset=utf-8');
res.end(secret);
});
};
};
};