85 lines
1.8 KiB
JavaScript
85 lines
1.8 KiB
JavaScript
'use strict';
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// opts = { renewWithin, renew, register, httpsOptions }
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module.exports.create = function (opts) {
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var tls = require('tls');
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var snicb = {
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// in-process cache
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_ipc: {}
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// just to account for clock skew
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, _fiveMin: 5 * 60 * 1000
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// cache and format incoming certs
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, cacheCerts: function (certs) {
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certs.altnames.forEach(function (domain) {
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snicb._ipc[domain] = { subject: certs.subject };
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});
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snicb._ipc[certs.subject] = certs;
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certs.tlsContext = tls.createSecureContext({
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key: certs.privkey
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, cert: certs.cert + certs.chain
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, rejectUnauthorized: opts.httpsOptions.rejectUnauthorized
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, requestCert: opts.httpsOptions.requestCert // request peer verification
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, ca: opts.httpsOptions.ca // this chain is for incoming peer connctions
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, crl: opts.httpsOptions.crl // this crl is for incoming peer connections
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});
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return certs;
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}
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// automate certificate registration on request
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, sniCallback: function (domain, cb) {
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var certs = snicb._ipc[domain];
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var promise;
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var now = Date.now();
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if (certs && certs.subject !== domain) {
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certs = snicb._ipc[domain];
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}
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// err just barely on the side of safety
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if (!certs) {
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promise = opts.register(domain);
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}
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else if (now >= (certs.expiresAt - snicb._fiveMin)) {
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promise = opts.renew(domain, certs);
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}
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else {
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if (now >= (certs.expiresAt - opts.renewWithin)) {
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// in background
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opts.renew(domain, certs).then(snicb.cacheCerts);
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}
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cb(null, certs);
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return;
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}
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promise.then(snicb.cacheCerts).then(function (certs) {
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cb(null, certs.tlsContext);
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}, cb);
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}
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};
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return snicb;
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};
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